CN103631463A - Digital capacitive touch panel - Google Patents

The invention relates to a touch screen, in particular to a digital capacitive touch panel. The digital capacitive touch panel comprises a touch substrate, a touch circuit and the like. The touch substrate is provided with sensing electrode units distributed in an array, the sensing electrode units are provided with independent electrode lead wires, and the touch circuit applies a touch control signal to the sensing electrode units at the same time, selects at least one sensing electrode unit where the touch control signal is applied as a detection electrode and determines a touch control position according to detection of the touch control signal on the detection electrode or changes of the touch control signal. The digital capacitive touch panel is simple in structure, low in cost and high in reliability.

A kind of digital capacitance contact panel

Technical field

The present invention relates to contact panel, relate in particular to capacitance type touch-control panel.

Background technology

Touch is the most important perceptive modes of the mankind, is that human and computer carries out the most natural interactive mode.Contact panel is developed so far various fields such as being widely used in personal computer, smart phone, public information, intelligent appliance, Industry Control.In current touch-control field, mainly contain electric resistance touch-control panel, photo-electric contact panel, ultrasonic type contact panel, surface-capacitive touch panel, projective capacitive touch panel development is in recent years rapidly.

Electric resistance touch-control panel is still leading products in the market, but the structure of the double layer substrate of electric resistance touch-control panel, while making the use stacked together of contact panel and display panel, the display qualities such as the reflective very brightness that impact shows of contact panel, contrast, color saturation, whole display quality is declined greatly, and strengthen display panel brightness backlight, also can make power consumption rise sharply; Also there is the problem of location drift in analog resistance contact panel, frequently will carry out position correction; In addition, the working method of electric resistance touch-control panel electrode contact, makes again the life-span of contact panel shorter.

Infrared-type touch panel and ultrasonic type contact panel can not affect display quality.But infrared-type touch panel and ultrasonic type contact panel cost are high, water droplet and dust all can affect the reliability of contact panel work, particularly infrared-type touch panel and ultrasonic type contact panel mechanism are complicated, power consumption is large, and infrared-type touch panel and ultrasonic type contact panel cannot be applied on portable product substantially.

The structure of the single layer substrate of surface-capacitive touch panel, while making the use stacked together of contact panel and display panel, contact panel is little on the impact of display quality.But also there is the problem of location drift in surface-capacitive touch panel, frequently will carry out position correction; Water droplet also can affect the reliability of contact panel work; Particularly surface-capacitive touch panel power consumption is large, cost is high, also allows surface-capacitive touch panel substantially cannot be applied on portable product.

Projective capacitive touch panel is single layer substrate structure still, and while also making the use stacked together of contact panel and display panel, contact panel is little on the impact of display quality.But projective capacitive touch panel is not real digital contact panel, anchor point need to pass through analog computation, distributed capacitance in manufacture and environment for use all can affect the reliability of contact panel work, the interference of display drive signals and other electric signal all can affect the work of contact panel, and water droplet also can affect the reliability of contact panel work; In addition, projective capacitive touch panel has higher requirements to the resistance value aspect of exploring electrode line, make the exploring electrode line with the projective capacitive touch panel of display panel use stacked together, can not only have the low conductivity transparent electrode layer as ITO sample, also will be just like the high conductivity electrode layer of metal species, manufacture technology is complicated, cost is high, particularly at large scale, high cost aspect oversize contact panel even.

Publication number is the patent that CN101887333A name is called a < < digital capacitive touch screen > >, a kind of digital capacitance contact panel has been proposed, by touch base plate and touch-control circuit etc., formed, on touch base plate, be provided with the electrode group that is no less than two sets intersect, each strip electrode line connects touch-control circuit, each selects many strip electrodes line as detecting electrode constantly, many detecting electrode lines are applied to touching signals simultaneously, and detect the variation of touching signals on many detecting electrode lines, or each moment selection portion sub-electrode line is as detecting electrode, when detecting electrode line is applied touching signals and detects the variation of touching signals on detecting electrode line, also non-detecting electrode line is applied to touching signals, this scheme is by apply touching signals to detecting electrode and non-detecting electrode simultaneously, reduce touching signals flowing between detecting electrode and between detecting electrode and non-detecting electrode, controlled the flow direction of touching signals, by the accuracy to the utmost point judgement that gets an electric shock, bring up to distinguishable each strip electrode line, really realize digital capacitance touching control panel.This patent need to arrange the electrode wires of two sets intersect, belongs on different electrode wires layers, and manufacture craft relative complex, need to carry out from two data of ranks definite relative complex of position of touch to the judgement of position of touch.

Summary of the invention

The present invention is exactly in order to realize simply independently digital capacitance contact panel.The present invention is by arranging the sensing electrode unit of array arrangement, each sensing electrode unit has separately independently extraction electrode line, on a plurality of sensing electrodes unit, apply touching signals simultaneously, crosstalking of anti-stop signal, detect one by one the variation of touching signals on sensing electrode unit or touching signals, determine position of touch, on single-layer electrodes, realize digital capacitance touching control panel.

Technical matters of the present invention is solved by following technical scheme:

A digital capacitance contact panel, comprises touch base plate and touch-control circuit, and touch-control circuit has touch-control driving source and touching signals circuit for detecting; On touch base plate, be provided with sensing electrode cell array, each sensing electrode unit has independently extraction electrode line, and the extraction electrode line of each sensing electrode unit connects touch-control circuit; Described sensing electrode cell array, refers in two mutually orthogonal directions at any one place, sensing electrode unit, all have be respectively no less than two, with arranged with interval separately, mutually disjoint or the independent sensing electrode unit of non-overlapping copies; The extraction electrode line of described sensing electrode unit, refers to that the connection sensing electrode unit that is arranged on contact panel is to the electric conduction polar curve at contact panel edge; In the period of touch-control circuit work, there is at least one moment, touch-control driving source applies touching signals to a plurality of sensing electrodes unit simultaneously, and it is detecting electrode that touching signals circuit for detecting is selected wherein at least one sensing electrode unit; Described detecting electrode refers to when this sensing electrode unit is applied with to touching signals, the sensing electrode unit that also touching signals of this sensing electrode unit of detecting inflow or touching signals change.

According to another concrete aspect of the present invention, described each sensing electrode unit connects the extraction electrode line of touch-control circuit, is to be connected on the different leading foot of touch-control circuit.

According to another concrete aspect of the present invention, described touch-control driving source applies touching signals to a plurality of sensing electrodes unit simultaneously, refers to touch-control driving source to two or applies touching signals more than two or all sensing electrode unit simultaneously; The position of a plurality of sensing electrode unit that are applied with touching signals on contact panel is adjacent one another are; Sensing electrode adjacent one another are unit, described position is that colleague is or/and all or part sensing electrode unit of same column.

According to another concrete aspect of the present invention, it is detecting electrode that described touching signals circuit for detecting is selected wherein at least one sensing electrode unit, refer to detecting electrode is applied to touching signals, and detect to flow on detecting electrode unit when touching signals changes, also non-detecting electrode is applied to touching signals; The described non-detecting electrode that applies touching signals is all or part sensing electrode unit that connects touch-control circuit.

According to another concrete aspect of the present invention, on described each sensing electrode unit, amplitude, frequency, phase place or the coding of the touching signals that applies are identical, or at least one item in the amplitude of the touching signals that applies, frequency, phase place or coding is different.

According to another concrete aspect of the present invention, it is that the mode scanning is carried out that described touch-control circuit is selected detecting electrode, do not select in the same time different sensing electrodes unit as detecting electrode, timesharing detecting flows into the touching signals of different detecting electrodes or the variation of touching signals.

According to another concrete aspect of the present invention, described touch-control circuit synchronization, selects different a plurality of sensing electrodes unit as different detecting electrodes, and detecting simultaneously flows into the touching signals of different detecting electrodes or the variation of touching signals.

According to another concrete aspect of the present invention, the detecting of described touch-control circuit flows into touching signals on sensing electrode unit or the variation of touching signals, detecting be at least one in current signal and voltage signal; The current signal of described detecting or voltage signal are at least one in amplitude, time, phase place, frequency signal and umber of pulse.

According to another concrete aspect of the present invention, described touch-control circuit, by detecting, flow into touching signals on each sensing electrode unit or the difference of touching signals variable quantity or touching signals rate of change, determine by sense of touch and survey electrode unit, or by calculating determine sensing electrode unit by tactile position.

According to another concrete aspect of the present invention, described touch-control circuit, it is the Wei Beichu position, position that touching signals or touching signals variable quantity or touching signals rate of change maximum detected, or touching signals or touching signals variable quantity or touching signals rate of change to be detected over the Wei Beichu position, position of certain setting threshold, or the maximum Wei Beichu position, position that also surpasses certain setting threshold of touching signals or touching signals variable quantity or touching signals rate of change to be detected.

According to another concrete aspect of the present invention, the sensing electrode unit on described touch base plate and extraction electrode line thereof, be the non-touch face in touch base plate, or on the touch face in touch base plate.

According to another concrete aspect of the present invention, described digital capacitance contact panel, that to take the upper substrate of display panel be touch base plate, sensing electrode cell array and extraction electrode line thereof are all arranged on the outside surface of display panel upper substrate, the upper substrate of described display panel refers to the substrate of more close user's one side in display panel two plate bases, and described upper substrate outside surface refers to the upper substrate surface of another substrate dorsad.

According to another concrete aspect of the present invention, between described touch-control sensing electrode unit array and upper substrate outside surface, there is guarded electrode, when described sensing electrode unit is applied to touching signals, also described guarded electrode is applied to the driving signal with touch-control pumping signal same waveform, same frequency, same phase.

According to another concrete aspect of the present invention, described digital capacitance contact panel, that to take the upper substrate of display panel be touch base plate, sensing electrode cell array and extraction electrode line thereof are all arranged on the inside surface of display panel upper substrate, the upper substrate of described display panel refers to the substrate of more close user's one side in display panel two plate bases, and described upper substrate inside surface refers to that upper substrate is towards the surface of another substrate; Sensing electrode unit and extraction electrode line thereof, in showing between public electrode and upper substrate inside surface, show between public electrode and sensing electrode unit and extraction electrode line thereof and have insulation course; The demonstration of described digital capacitance contact panel and touch-control are that timesharing is carried out, when described sensing electrode unit is applied to touching signals, also to described demonstration public electrode, apply the driving signal with touch-control pumping signal same waveform, same frequency, same phase.

According to another concrete aspect of the present invention, described digital capacitance contact panel, that to take the upper substrate of display panel be touch base plate, the demonstration public electrode of above substrate inside surface or the guarded electrode of upper substrate outside surface are as sensing electrode unit, show that public electrode or guarded electrode are cut into some independently small electrodes unit, each small electrode unit has independently extraction electrode line; The extraction electrode line of each small electrode unit connects respectively display driver circuit and touch-control circuit by gating device, shows with touch-control timesharing and carries out; In the display driver period, described gating device makes small electrode unit be communicated with display driver circuit, applies display or shielded signal to small electrode unit; In the touch detection period, described gating device makes small electrode unit be communicated with touch-control circuit, applies touching signals to small electrode unit.

According to another concrete aspect of the present invention, described touch-control circuit is not less than 20K Hz to the frequency of the touching signals of sensing electrode unit output.

According to another concrete aspect of the present invention, on the sensing electrode unit on described touch base plate and extraction electrode line thereof, be provided with protective seam.

According to another concrete aspect of the present invention, on described touch base plate, the edge of the edge of sensing electrode unit or extraction electrode line is broken line, and on broken line, the angle of two adjacent straight lines is greater than 20 ° and is less than 160 °.

According to another concrete aspect of the present invention, described touch base plate is flexible or rigid transparency carrier.

The beneficial effect that the present invention is compared with the prior art is:

Because sensing electrode unit is that array arrangement is on the touch area of whole contact panel, when operator's finger touches by sense of touch survey electrode unit, also can touch the adjacent or close non-extension line of being surveyed electrode unit by sense of touch, touch-control circuit is surveyed on electrode unit and also may be detected touching signals by sense of touch non-, thereby generation signal cross-talk, by non-, by sense of touch survey electrode unit, be mistaken for by sense of touch and survey electrode unit, cause the misjudgment of position of touch, or cause producing deviation when touch surface lining out, the sensing electrode unit of array arrangement is set in the technical program on contact panel, and a plurality of sensing electrode unit is applied to touching signals simultaneously, efficiently solve the problem of signal cross-talk between the sensing electrode unit of array arrangement: sensing electrode unit a plurality of in the sensing electrode unit that pair array is arranged apply touching signals simultaneously, operator finger or other touch control objects touch while being surveyed on electrode unit and the adjacent or close non-extension line of being surveyed electrode unit by sense of touch by sense of touch, electric current from operator's finger or the outflow of other touch control objects, to be provided by a plurality of touch-control electrodes simultaneously, namely by sense of touch, surveyed electrode unit and the non-extension line of being surveyed electrode unit by sense of touch provides electric current to touch control object simultaneously, each touch-control electrode stream is proportional to finger or the size of current of other touch control objects the area that finger or other touch control objects touch each touch-control electrode, in finger or the size of other touch control objects during much larger than the width of sensing electrode unit extension line, finger or other touch control objects touch will be much larger than touching the non-area of being surveyed electrode unit extension line by sense of touch by the area of sense of touch survey electrode unit, with respect to from being surveyed by sense of touch the electric current that electrode unit flows to finger or other touch control objects, just negligible from the non-electric current by sense of touch survey electrode unit extension line flow direction finger or other touch control objects like this.

The present invention can realize relatively simply independently digital capacitance contact panel, the sensing electrode unit setting of arranging by pair array is extraction electrode line independently separately, whether touching signals on each extraction electrode line and the sensing electrode unit that changes corresponding relevant position thereof touch, only need to carry out a touch detection just can determine touch-control, makes the detecting of touch-control become simple.

Digital capacitance contact panel of the present invention, at operator finger or other touch control objects, touch while being surveyed electrode unit by sense of touch, although also can touch the non-extension line of being surveyed electrode unit by sense of touch, sensing electrode unit a plurality of in the sensing electrode unit that pair array is arranged apply touching signals simultaneously, just greatly reduced crosstalking of touching signals, controlled the flow direction of touching signals, to quilt be touched to the accuracy of position judgment, specific to each sensing electrode unit, really realize digital capacitance touching control panel.

To the amplitude of touching signals that each detecting electrode applies, phase place, frequency or coding, also can be adjusted into difference, to amplitude, phase place, the frequency of the amplitude of touching signals that non-detecting electrode applies, phase place, frequency or coding and the touching signals that detecting electrode is applied or encode also can be adjusted into different, to control more subtly the flow direction of touching signals.

Judge the condition of the polar curve that gets an electric shock, can detect touching signals and change the maximum Wei Beichu position, sensing electrode unit that also surpasses certain setting threshold, touch control type flat-panel display is with single-point touch.The condition of electrode unit is surveyed in judgement by sense of touch, also can only touching signals to be detected, change the Wei Beichu position, sensing electrode unit that surpasses certain setting threshold, allows digital capacitance contact panel of the present invention allow multi-point touch simultaneously.

Digital capacitance contact panel of the present invention simple in structure, only needs single-layer electrodes pattern, and the habitual manufacturing process of applying current panel display board or contact panel easily realizes, and makes the cost of contact panel low, reliability is high.

Accompanying drawing explanation

Fig. 1 is the electrical connection schematic diagram of the specific embodiment of the invention one, two, three;

Fig. 2 is the electrical connection schematic diagram of the specific embodiment of the invention four and mode five;

Fig. 3 is the electrical connection schematic diagram of the specific embodiment of the invention six;

Fig. 4 is the structural representation of the specific embodiment of the invention seven;

Fig. 5 is the structural representation of the specific embodiment of the invention eight;

Fig. 6 is the structural representation of the specific embodiment of the invention nine;

Fig. 7 is the structural representation of the specific embodiment of the invention ten;

Fig. 8 is the electrical connection schematic diagram of the specific embodiment of the invention 11,12,13,14;

Fig. 9 is the structural representation of the specific embodiment of the invention 12;

Figure 10 is the structural representation of the specific embodiment of the invention 13;

Figure 11 is the structural representation of the specific embodiment of the invention 14;

Figure 12 is the structural representation of the specific embodiment of the invention 15;

Figure 13,13a are the structural representations of the specific embodiment of the invention 16.

embodiment

Embodiment one

Touch-control circuit detecting flows into touching signals on sensing electrode unit or the variation of touching signals, detecting be at least one in current signal and voltage signal.

Touch-control circuit detecting flows into touching signals on sensing electrode unit or the variation of touching signals, detecting be at least one in amplitude, time, phase place, frequency signal and umber of pulse.

When allowing operator touch digital capacitance contact panel, the variable quantity of touching signals is enough large, with opposing, disturb and be convenient to measure, will allow touching signals have enough penetration powers, touch-control circuit is not less than 20K Hz to the frequency of the touching signals of electrode wires output.

Embodiment two

On 130 pairs of contact panels of touch-control circuit, adjacent sensing electrode unit, a plurality of positions applies touching signals simultaneously, and select different a plurality of sensing electrodes unit as different detecting electrodes, when operator finger or other touch control objects touch while being surveyed on electrode unit and the adjacent or close non-extension line of being surveyed electrode unit by sense of touch by sense of touch, electric current from operator's finger or the outflow of other touch control objects, to be provided by a plurality of touch-control electrodes simultaneously, namely by sense of touch, surveyed electrode unit and the non-extension line of being surveyed electrode unit by sense of touch provides electric current to touch control object simultaneously, each touch-control electrode stream is proportional to finger or the size of other touch control object electric currents the area that finger or other touch control objects touch each touch-control electrode, in the size of sensing electrode unit during much larger than the width of sensing electrode unit extension line, finger or other touch control objects touch will be much larger than touching the non-area of being surveyed electrode unit extension line by sense of touch by the area of sense of touch survey electrode unit, like this with respect to from being surveyed by sense of touch, the electrode unit flow direction is pointed or the electric current of other touch control objects, just negligible from the non-electric current by sense of touch survey electrode unit extension line flow direction finger or other touch control objects, avoided owing to touching the non-erroneous judgement being caused by sense of touch survey electrode unit extension line.

Touch-control circuit is identical to amplitude, phase place, frequency or the coding of the touching signals that applies on each sensing electrode unit, can be also that at least one in the amplitude, phase place, frequency of applied touching signals or coding is different.

The condition of position is touched in judgement, the Wei Beichu position, position of touching signals or touching signals variable quantity or touching signals rate of change maximum can be detected, also the Wei Beichu position, position that touching signals or touching signals variable quantity or touching signals rate of change surpass certain setting threshold can be detected, the maximum Wei Beichu position, position that also surpasses certain setting threshold of touching signals or touching signals variable quantity or touching signals rate of change can also be detected.

Touch-control circuit also can be by detecting the touching signals on each sensing electrode unit or the difference of touching signals variable quantity or touching signals rate of change, come calculative determination by sense of touch survey between electrode unit by tactile position.

Embodiment three

On 130 pairs of contact panels of touch-control circuit, adjacent sensing electrode unit, a plurality of positions applies touching signals simultaneously, and select different a plurality of sensing electrodes unit as different detecting electrodes, detecting simultaneously flows into the touching signals of different detecting electrodes or the variation of touching signals.The process that 130 pairs of sensing electrode unit of touch-control circuit carry out touch detection is as follows: the touch-control driving source 131 in touch-control circuit 130, a moment at touch detection in the period, to first three columns sensing electrode unit (121x * 121y, 121x * 122y, 121x * 12ny, 122x * 121y, 122x * 122y, 122x * 12ny, 123x * 121y, 123x * 122y, 123x * 12ny) extraction electrode line applies identical touch-control pumping signal simultaneously, remaining sensing electrode unit is not applied to touch-control pumping signal, the one row sensing electrode unit, centre that touching signals circuit for detecting 132 selections in touch-control circuit 130 are applied with identical touching signals is n different detecting electrode, detect the variation of touching signals on n detecting electrode, take and touching signals detected and change maximum detecting electrode as being touched position, next constantly select other three row sensing electrode unit (122x * 121y, 122x * 122y ... 122x * 12ny, 123x * 121y, 123x * 122y ... 123x * 12ny, 124x * 121y, 124x * 122y ... 124x * 12ny) apply touch-control excitation, and detection middle lists the variation of touching signals simultaneously, detection mode for first row or last row sensing electrode unit is: touch-control circuit applies identical touch-control excitation to first row and the sensing electrode unit of secondary series simultaneously simultaneously, and detects the variation of touching signals on first row, or last row are applied to identical touch-control excitation with the sensing electrode unit of the second last row simultaneously, and detect the variation that last lists touching signals, touch-control circuit applies touch-control excitation to three row sensing electrode unit so by column movably simultaneously, and detects the variation that centre one lists touching signals, completes the detecting to the upper sensing electrode of m * n unit on contact panel 100.

The condition of position is touched in judgement, the Wei Beichu position, position of touching signals or touching signals variable quantity or touching signals rate of change maximum can be detected, also the Wei Beichu position, position that touching signals or touching signals variable quantity or touching signals rate of change surpass certain setting threshold can be detected, the maximum Wei Beichu position, position that also surpasses certain setting threshold of touching signals or touching signals variable quantity or touching signals rate of change can also be detected.

Touch-control circuit also can be by detecting the touching signals on each sensing electrode unit or the difference of touching signals variable quantity or touching signals rate of change, come calculative determination by sense of touch survey between electrode unit by tactile position.

Embodiment four

Digital capacitance contact panel 200 applies different touching signals with the unit of classifying as simultaneously, and take a wherein sensing electrode unit listing is different detecting electrodes, and touch-control circuit is detected the variation of touching signals on each detecting electrode simultaneously.The process that 230 pairs of sensing electrode unit of touch-control circuit carry out touch detection is as follows: in a certain moment of touch detection period, touch-control driving source 231 in touch-control circuit 230 is each sensing electrode unit (221x * 22hy to 22h row simultaneously, 222x * 22hy, 22gx * 22hy, 22mx * 22hy) apply touch-control pumping signal 1, to the 22h-1 row that are adjacent, each sensing electrode unit of 22h+1 row applies other touch-control pumping signal 2, remaining sensing electrode unit is not applied to touch-control pumping signal, the phase place of touch-control pumping signal 1 and touch-control pumping signal 2 and frequency is identical and amplitude is different, touching signals circuit for detecting 232 detects the variation that 22h is listed as touching signals on each sensing electrode unit simultaneously, each sensing electrode unit that the 22h of take lists is different detecting electrode, touch-control circuit changes maximum Wei Beichu position, sensing electrode unit with touching signals on different detecting electrodes, or list touching signals variation over the Wei Beichu position, sensing electrode position in the middle of being positioned in a plurality of sensing electrodes unit of certain setting threshold with 22h.Next constantly, touch-control driving source 231 in touch-control circuit 230 applies touch-control pumping signal 1 to each sensing electrode unit of 22h+1 row simultaneously, each sensing electrode unit to 22h row, 22h+2 row applies other touch-control pumping signal 2, remaining sensing electrode unit is not applied to touch-control pumping signal, touching signals circuit for detecting 232 detect 22h+1 list with each sensing electrode unit on the variation of touching signals, repeat the detection and detecting deterministic process in a moment, complete the touch detection that digital capacitance contact panel m * n is ordered.

Touch-control circuit flows into touching signals on each sensing electrode unit or the difference of touching signals variable quantity or touching signals rate of change by detecting, determines by sense of touch and surveys electrode unit position.

Being applied to touch-control pumping signal 1 and touch-control pumping signal 2 on the sensing electrode unit of different lines, can be that amplitude, phase place, frequency are not identical, can be also one or two differences in amplitude, phase place, frequency.

The condition of electrode unit is surveyed in judgement by sense of touch, also can not take and the maximum sensing electrode unit that also surpasses certain setting threshold of the touching signals variable quantity of flowing through be detected as being surveyed electrode unit by sense of touch, and take, the center that the touching signals variable quantity of flowing through surpasses first three position, large sensing electrode unit of certain setting threshold to be detected be position of touch, thereby obtain identifying digital capacitance contact panel meticulousr, multi-touch.

Embodiment five

On 230 pairs of contact panels of touch-control circuit, adjacent sensing electrode unit, a plurality of positions applies touching signals simultaneously, only selects one of them sensing electrode unit as detecting electrode, and detecting flows into the touching signals of detecting electrode or the variation of touching signals.The process that 230 pairs of each sensing electrode unit of touch-control circuit carry out touch detection is as follows: touch-control circuit carries out touch detection with scan mode to the sensing electrode unit on contact panel, touch-control driving source 231 in touch-control circuit 230, some moment at touch detection in the period, a certain sensing electrode unit (22g * 22h) is applied to touching signals, and to select this sensing electrode unit be detecting electrode, touch-control circuit 230 is when applying touching signals to detecting electrode unit, also to eight the non-detecting electrode (22g-1 * 22h-1s adjacent with detecting electrode, 22g-1 * 22h, 22g-1 * 22h+1, 22g * 22h-1, 22g * 22h+1, 22g+1 * 22h-1, 22g+1 * 22h, 22g+1 * 22h+1) apply identical touching signals, the variation of the upper touching signals of touch detection circuit 232 detecting detecting electrode (22g * 22h), the Wei Beichu position, sensing electrode unit that surpasses certain setting threshold with the variation of touching signals, next moment of touch-control circuit, selecting (22g * 22h+1) sensing electrode unit is detecting electrode, when detecting electrode being applied to touching signals and detecting on this detecting electrode touching signals and changing, also the non-detecting electrode adjacent with detecting electrode applied to identical touching signals, touch-control circuit is with scan mode, selecting a certain sensing electrode unit, it is detecting electrode, when detecting electrode being applied to touching signals and detecting on detecting electrode touching signals and changing, also the whole non-detecting electrode adjacent with detecting electrode applied to identical touching signals, complete the detecting to m * n on contact panel sensing electrode unit.

Touch-control circuit detecting flows into touching signals on sensing electrode unit or the variation of touching signals, detecting be at least one in current signal and voltage signal.

Touch-control circuit detecting flows into touching signals on sensing electrode unit or the variation of touching signals, detecting be at least one in amplitude, time, phase place, frequency signal and umber of pulse.

Embodiment six

Touch-control circuit synchronization, select different a plurality of sensing electrodes unit as different detecting electrodes, when detecting electrode is applied to touching signals, also the whole non-detecting electrode adjacent with detecting electrode applied to identical touching signals, detecting simultaneously flows into the touching signals of different detecting electrodes or the variation of touching signals.Subregion, all sensing electrodes unit on digital capacitance contact panel 300, one of them sensing electrode in each region is applied to identical touching signals as detecting electrode simultaneously, for controlling the flow direction of touching signals, also the sensing electrode unit adjacent with detecting electrode applied to identical touching signals simultaneously, touch-control circuit is detected the variation of touching signals on the different detecting electrodes in each region simultaneously, and in the same area, touch-control circuit carries out touch control detection in the mode of scanning to each sensing electrode unit in region.The process that 330 pairs of sensing electrode unit of touch-control circuit carry out touch detection is as follows: contact panel 300 is divided into two regions, left and right, touch-control circuit 330 carries out touch detection to one of them the sensing electrode unit in contact panel zones of different simultaneously, the a certain moment, (the 32i of the 331 pairs of contact panel left area of touch-control driving source in touch-control circuit 330, 32j) individual sensing electrode unit applies touching signals, while is the (32g to region, contact panel the right also, 32h) individual sensing electrode unit applies touching signals, touch-control circuit 330 selects a sensing electrode unit in two zoness of different to carry out touch control detection as two detecting electrodes, for controlling the flow direction of touching signals, touch-control circuit 330 simultaneously also to detecting electrode (32i, 32j) the sensing electrode unit of 8 adjacent non-detections applies touching signals, and the sensing electrode unit of 8 the non-detections adjacent with detecting electrode (32g, 32h) is applied to touching signals, with detecting electrode (32i, 32j) the sensing electrode unit of 8 adjacent non-detections is respectively (32i-1, 32j-1), (32i-1, 32j), (32i-1, 32j+1), (32i, 32j-1), (32i, 32j+1), (32i+1, 32j-1), (32i+1, 32j), (32i+1, 32j+1), with detecting electrode (32g, 32h) the sensing electrode unit of 8 adjacent non-detections is respectively (32g-1, 32h-1), (32g-1, 32h), (32g-1, 32h+1), (32g, 32h-1), (32g, 32h+1), (32g+1, 32h-1), (32g+1, 32h), (32g+1, 32h+1), on remaining sensing electrode unit, do not apply touching signals, touching signals circuit for detecting 332 is selected (32i simultaneously, 32j), (32g, 32h) sensing electrode unit is detecting electrode, and detecting electrode is being applied to touching signals, and detect to flow on detecting electrode when touching signals changes, also non-detecting electrode is applied to touching signals, the described non-detecting electrode that applies touching signals, is in each sensing electrode unit of contact panel, the sensing electrode unit of all or part adjacent with detecting electrode, touch-control circuit surpasses the Wei Beichu position, position at the place, sensing electrode unit of certain setting threshold touching signals to be detected, thereby realizes multi-point touch.

The mode that contact panel subregion is scanned has been accelerated the speed of touch detection, to the mode of contact panel subregion, can be various.

Non-detecting electrode to detecting electrode and periphery applies identical touching signals simultaneously, has controlled the flow direction of touching signals between each sensing electrode unit, improves the accuracy of touch control detection.

When detecting electrode is applied to touching signals, to amplitude, phase place, the frequency of amplitude, phase place, the frequency of touching signals that non-detecting electrode applies and touching signals that detecting electrode is applied, also can be adjusted into different, to control more subtly the flow direction of touching signals.The touching signals that detecting electrode is applied and the touching signals that non-detecting electrode is applied, can be that amplitude, phase place, frequency are not identical, can be also one or two differences in amplitude, phase place, frequency.

Touching signals on touch detection electric circuit inspection extraction electrode line, detection can be voltage signal, can be also current signal; That detects can be amplitude, also can be phase place or frequency signal, detection can be also sensing electrode unit to be discharged and recharged to the umber of pulse of time period inside counting device record.

The condition of electrode unit is surveyed in judgement by sense of touch, also can not take and the maximum sensing electrode unit that also surpasses certain setting threshold of the touching signals variable quantity of flowing through be detected as being surveyed electrode unit by sense of touch, and take, the center of position that the touching signals variable quantity of flowing through surpasses first three large sensing electrode unit of certain setting threshold to be detected be position of touch, thereby obtain identifying digital capacitance contact panel meticulousr, multi-touch.

The condition of electrode unit is surveyed in judgement by sense of touch, also can only take and sensing electrode unit that the touching signals variable quantity of flowing through surpasses certain setting threshold be detected as being surveyed electrode unit by sense of touch, allows digital capacitance contact panel allow multi-point touch simultaneously.

Embodiment seven

Each sensing electrode unit and extraction electrode line thereof are positioned on the touch face of touch base plate, when finger or extraneous touch control object touch contact panel, finger or touch control object may touch certain sensing electrode unit simultaneously and other is not surveyed on the extraction electrode line of electrode unit by sense of touch, at this moment not surveyed the extraction electrode line of electrode unit by sense of touch on, this sensing electrode unit and other produce touching signals simultaneously, because the area of sensing electrode unit is far longer than the area of section of extraction electrode line, in finger or the size of other touch control objects much larger than sensing electrode unit and during the width of extraction electrode line, finger or other touch control objects touch will be much larger than touching the non-area of being surveyed electrode unit extraction electrode line by sense of touch by the area of sense of touch survey electrode unit, the touching signals being produced on electrode unit is far longer than finger or touch control object is not being surveyed by sense of touch the touching signals being produced on the extraction electrode line of electrode unit being surveyed by sense of touch for finger or touch control object, by touching signals is set up the method for threshold value just can get rid of because of finger or touch control object touch the touching signals producing on extraction electrode line, get rid of extraction electrode line to the issuable impact of touch-control.

Described touch base plate is flexible or rigid transparency carrier.

Embodiment eight

Draw on one side that the extraction electrode line of each sensing electrode unit is deviated to touch face from each sensing electrode, sensing electrode cell array has shielded the coupling of each extraction electrode line and finger or touch control object, reduce the touching signals producing on extraction electrode line because touching, improved the accuracy of touch-control judgement.

Described touch base plate is flexible or rigid transparency carrier.

Embodiment nine

The demonstration of described digital capacitance contact panel 600 and touch-control can carry out simultaneously, also can timesharing carry out, while carrying out simultaneously, display driver circuit 603 to each electrode wires of the display line scanning electrode wire group 610 of display panel, each electrode wires of display column signal electrode line group 620 and show that public electrode 670 output displays drive signals, touch-control circuit 604 applies touch-control pumping signal to each sensing electrode unit simultaneously, and simultaneously or timesharing detect the variation of touching signals on each sensing electrode unit extraction electrode line, when timesharing is carried out, at display time interval, display driver circuit 603 is to each electrode wires of the display line scanning electrode wire group 610 of display panel, each electrode wires of display column signal electrode line group 620 and demonstration public electrode 670 output displays drive signals, in the touch-control period, display driver circuit 603 stops output display and drives signal, 604 whiles of touch-control circuit or timesharing apply touch-control pumping signal to each sensing electrode unit, simultaneously also to showing that public electrode 670 applies the driving signal identical with touch-control pumping signal, and detect the variation of touching signals on each sensing electrode unit extraction electrode line, obtain the touching signals on each sensing electrode unit, thereby obtain the touch information on display panel, allow touch control type flat-panel display 600 possess shows and touch controllable function simultaneously.

Flat-panel monitor can be also the flat panel displayses such as active matrix liquid crystal display panel (AM LCD), organic light-emitting diode (OLED) display screen (OLED, AM OLED), CNT display screen, Electronic Paper (e-paper).

In accompanying drawing 6, fine line is for showing that, with electrode wires and circuit, thick dashed line is electrode wires and circuit for touch-control.

Embodiment ten

The demonstration of described digital capacitance contact panel 700 and touch-control are timesharing while carrying out, and at display time interval, display driver circuit is to display line scanning electrode wire group, the display column signal electrode line group of display panel and show that public electrode 770 output displays drive signals; In the touch-control period, display driver circuit stops output display and drives signal, touch-control circuit while or timesharing apply touch-control pumping signal to each sensing electrode unit, simultaneously also to showing that omnibus circuit 770 applies the driving signal with touch-control pumping signal same waveform, same frequency, same phase, and detect the variation of touching signals on each sensing electrode unit extraction electrode line, obtain the touching signals on each sensing electrode unit, thereby obtain the touch information on display panel, allow touch control type flat-panel display 700 possess simultaneously and show and touch controllable function.

Embodiment 11

Embodiment 12

The demonstration of described digital capacitance contact panel 600 and touch-control can carry out simultaneously, also can timesharing carry out, while carrying out simultaneously, display driver circuit to each electrode wires of the display line scanning electrode wire group of display panel, each electrode wires of display column signal electrode line group and show that public electrode 970 output displays drive signals, touch-control circuit applies touch-control pumping signal to each sensing electrode unit, when timesharing is carried out, at display time interval, display driver circuit is to each electrode wires of the display line scanning electrode wire group of display panel, each electrode wires of display column signal electrode line group and demonstration public electrode 970 output displays drive signals, in the touch-control period, display driver circuit stops output display and drives signal, touch-control circuit applies touch-control pumping signal to each sensing electrode unit, simultaneously also to showing that public electrode 970 applies and touch-control pumping signal same waveform, same frequency, the driving signal of same phase, touch-control circuit is detected the variation of touching signals on each sensing electrode unit extraction electrode line, obtain the touching signals on each sensing electrode unit, thereby obtain the touch information on display panel, allow touch control type flat-panel display 600 possess shows and touch controllable function simultaneously.

Touch-control circuit applies the mode of touch-control pumping signal to each sensing electrode unit, can be all sensing electrode unit all to be applied simultaneously, also can each sensing electrode unit be applied with the mode timesharing of scanning.

Embodiment 13

Touch-control circuit applies the mode of touch-control pumping signal to each sensing electrode unit, can be all sensing electrode unit all to be applied simultaneously, also can each sensing electrode unit be applied with the mode timesharing of scanning.

Flat-panel monitor can be also the flat panel displayses such as active matrix liquid crystal display panel (AM LCD), organic light-emitting diode (OLED) display screen (OLED, AM OLED), CNT display screen, Electronic Paper (e-paper), plane conversion active matrix liquid crystal display panel (IPS).

Embodiment 14

The demonstration of capacitance digital contact panel 1100 and touch-control can carry out in timesharing, also can carry out simultaneously, when mode is carried out in timesharing, at display time interval, display driver circuit, each electrode wires of display column signal electrode line group and public electrode output display drive signal, applies shielded signal to guarded electrode 1190 to each electrode wires of the display line scanning electrode wire group of display panel simultaneously, in the touch-control period, display driver circuit stops driving signal to each show electrode output display, touch-control circuit applies touch-control pumping signal to each sensing electrode unit, display driver circuit also applies the driving signal identical with touch-control pumping signal to guarded electrode 1190 simultaneously, and detect each sensing electrode unit touch information, obtain the touch information on display panel, while carrying out mode simultaneously, display driver circuit is to each electrode wires of the display line scanning electrode wire group of display panel, each electrode wires of display column signal electrode line group and public electrode output display drive signal, touch-control circuit applies touch-control pumping signal to each sensing electrode unit, and detect each sensing electrode unit touch information, obtain the touch information on display panel, display driver circuit applies identical touch-control pumping signal to guarded electrode 1190 simultaneously, the display time interval of touch control type flat-panel display 700 and touch-control period constantly circulate, allow touch control type flat-panel display 700 possess shows and touch controllable function simultaneously.

Embodiment 15

Embodiment 16

Capacitance digital contact panel 1300 as shown in figure 13, its side view, as shown in Figure 13 a, comprises flat panel displays and touch-control sensing electrode unit array 1350, display panel has infrabasal plate 1302 and upper substrate 1301.On the inside surface of upper substrate 1301, there is demonstration public electrode; The inside surface of infrabasal plate 1302 has Thin Film Transistor (TFT) for demonstration (TFT) cell array 1330 of display line scanning electrode wire group 1310, display column signal electrode line group 1320, (m * n) and the display pixel electrode unit array 1340 of (m * n), display line scanning electrode wire group 1310 comprises 1311,1312 ..., 131m bar scanning electrode wire, display column signal electrode line group 1320 comprises 1321,1322 ..., 132n bars electrode wires, m, n are greater than 2 natural number; Each shows and is connected respectively with display pixel electrode unit array 1340 each unit with the drain electrode (Drain) of TFT unit, grid (Gate) is connected to respectively line scanning electrode wires group 1310 each electrode wires, source electrode (Source) is connected to respectively column signal electrode wires group 1320 each electrode wires, each electrode wires of display line scanning electrode wire group 1310 is connected respectively display driver circuit 1303 with each electrode wires of display column signal electrode line group 1320, between two substrates, with glue 1380, be pasted together, the region that two substrates surrounds with glue has liquid crystal 1390.

Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.