CN106033165A - Fringe field switching electrode arranging and driving method - Google Patents

The invention provides a fringe field switching (FFS) electrode arranging and driving method comprising the following steps: arranging a plurality of mutually parallel first electrodes along the first direction; arranging a plurality of mutually parallel second electrodes along the second direction, wherein the first direction intersects with the second direction, each cross position between projections of the first and second electrodes is provided with a primary pixel and 4 continuous sub-pixels in the first direction, thus forming a main pixel; while in the first frame, controlling polarity of 4 continuous sub-pixels of the main pixel at the odd number of the second electrode in the 4*(j-1)+1 and 4*(j-1)+2 positions to be positive, negative, positive and negative in sequence; controlling the polarity of 4 continuous sub-pixels of the main pixel at the even number to be negative, positive, negative and positive in sequence. The fringe field switching (FFS) electrode arranging and driving method can reduce the capacitance of the second electrode in FFS LCD sub-pixels.

Fringe field switching electrode arrangement and driving method thereof

Technical field

This case proposes electrode arrangement and the driving method thereof of a kind of liquid crystal indicator, particularly a kind of fringe field switching The electrode arrangement of FFS liquid crystal indicator and driving method thereof.

Background technology

Along with lcd technology is more extensive, deep and develops rapidly, current LCDs (LCD) is Occupy all of main display screen market, such as monitor, mobile phone, television set, notebook the most overwhelmingly Computer, tablet PC (Tablet PC), GPS (GPS) device, portable image are broadcast Put device etc..

In LCDs, liquid crystal plays the role of light valve, at each pixel and/or the secondary picture of LCDs In element, within the instant playback time, control penetrating of light and blocking of light.From the perspective of the control mechanism of liquid crystal, LCDs can be divided into vertically joins phase (vertical alignment, VA) and plane switching (plane switching) Two types.

The type of VA can be further divided into some subtype.In general, VA type LCD has the fastest The liquid crystal response time, it is particularly suitable for showing the dynamic image of quickly movement.But, when user finger or During other objects pressing LCD Panel, scroll figure stricture of vagina appears in the place being pressed on LCD Panel, This phenomenon is because pressing display screen interval that liquid crystal can be made vertically to join phase and is shortened.From this respect, by In touch panel displays screen can the finger touching of the person of being frequently used and pressing, in any touched local display Picture all can thicken, so the LCDs of VA type is not suitable for contact panel (touch panel) display Screen.

On the other hand, plane switching type liquid crystal display screen, it is included in plane switching (IPS) type and fringe field switching (FFS) LCDs of type, then do not have this problem, and this is owing to liquid crystal arrangement therein occurs at plane (water Flat) direction rather than in vertical direction, so being provided that contact panel display screen superperformance.In general, FFS LCD sub-pixel has the aperture opening ratio bigger higher than IPS LCD and light transmittance so that FFS LCD sub-pixel itself Become the good selection being applied to portable contact panel display screen.But, every in typical FFS LCD The charging interval of the comparative electrode (counter electrode) of individual sub-pixel is the shortest, and when causing longer response Between.

Refer to Fig. 1, the top view of a sub-pixel 60 of the FFS LCD of its display prior art.In FIG, Sub-pixel electrode (pixel electrode) 66 is made up of body 66a and strip 66b, and comparative electrode 63 is one flat Face electrode.Owing to the area of comparative electrode 63 almost covers whole pixel, so by the comparative electrode that is electrically charged Electric capacity is the biggest.Therefore, charging interval of the electric capacity of comparative electrode or oversize, for the display of dynamic image, response Time may be the shortest.

Refer to Fig. 2, it is the top view of a sub-pixel 70 in another kind of existing FFS LCD.At Fig. 2 In, sub-pixel electrode 76 is made up of body 76a and strip 76b, and comparative electrode 73 is then by body 73a and length Bar 73b is formed.It can be seen that strip 73b of comparative electrode 73 is interspersed in sub-pixel from Fig. 2 (top view) Between strip 76b of electrode 76.In other words, each strip 73b of comparative electrode 73 is in pixel electrode On the projected position in the space between adjacent two strips 76b of 76.Although the electric capacity of the comparative electrode 73 in Fig. 2 Less than the electric capacity of the comparative electrode 63 in Fig. 1, this is because in area ratio Fig. 1 of the comparative electrode 73 in Fig. 2 The area of comparative electrode 63 is little, but the strip knot that in Fig. 2, comparative electrode 73 and pixel electrode 76 both have It is configured to the difficulty of the two electrode fit on, this is because strip 73b of comparative electrode 73 must ideally wear difference Between strip 76b of pixel electrode 76, to produce the uniform electric field needed for liquid crystal rotates.Pixel electrode is with relative Between electrode, the drift on slight position relatively will cause in liquid crystal arrangement transformation slightly, but in this liquid crystal arrangement slightly Micro-transformation will produce light leak, and the contrast of LCD can be disastrously greatly reduced.Contrast is defined as the most light Degree is divided by minimum brightness.

Additionally, existing electrode drive designs as shown in Figure 3.Fig. 3 is that existing fringe field switches (FFS) liquid crystal The schematic diagram of the polarity of electrode design of display screen (LCD) sub-pixel 50.When the first frame (frame), the first row And the polarity of electrode of the most each row is sequentially designed as " positive and negative, positive and negative ", the design of i.e. so-called " row are anti-".This Plant and be designed with simplest polarity of electrode arrangement mode, but when conversion is to next frame, needed for the variation of its polarity Time longer, also make response time the shortest, therefore the display for dynamic image can adversely affect.

In order to solve the shortcoming in above-mentioned prior art, except in patent of invention publication number CN102608812A it is proposed that Outside issue-resolution, inventor is more through deep study and analysis, and numerous experiments and improvement, finally develops The FFS LCD that the present invention is brand-new, has the advantages such as shorter electrode charge time and excellent display quality, and can Collocation uses high image quality integrated circuit (HD IC), without use cost higher overall height image quality integrated circuit (FHD IC), it becomes possible to reach the overall height image quality image quality of high brightness at lower cost, to benefit vast consumer.

Summary of the invention

The present invention provides the driving method of a kind of fringe field switching (FFS) electrode, it is possible to reduce whole second electrode Area, it is possible to reduce the electric capacity of the second electrode in FFS LCD sub-pixel.

The present invention provides the driving method of a kind of fringe field switching (FFS) electrode, it is characterised in that: include following step Rapid: along a first direction, the most parallel a plurality of multiple first electrodes are set；Arrange along a second direction and a plurality of put down each other Multiple second electrodes of row, described first direction intersects with described second direction, and the projection of described first electrode is with described Each crossover location of the projection of the second electrode has a sub-pixel and is positioned at continuous four times of described first direction Pixel forms a main pixel；And when one first frame (frame), control to be positioned at described 4th × (j-1)+1 and the The polarity (polarity) of described continuous four sub-pixels of main pixel described in the odd number of 4 × (j-1)+2 article of second electrode It is sequentially the polarity of described continuous four sub-pixels of main pixel described in " positive and negative, positive and negative " and even number It is sequentially " negative, positive, negative, positive "；Wherein j is positive integer, and described second electrode be shaped as one more than four limits Polygon, and be arranged in above or below described first electrode.

This case separately provides a kind of fringe field switching (FFS) electrode arrangement, it is characterised in that: including: along a first party To arranging the most parallel a plurality of first electrode, these first electrodes include at least Article 1, Article 2, Article 3 and Article 4 the first electrode；And the most parallel a plurality of second electrode is set along a second direction, wherein: this first party Intersect to this second direction；The projection of this first electrode has one with each lap position of the projection of this second electrode Sub-pixel；Initial continuous four sub-pixels being positioned at this first direction form a main pixel, be wherein positioned at described Article 1 and The polarity of the first continuous four sub-pixels on described Article 2 the first electrode and the opposite polarity of the second continuous four sub-pixels； And the polarity of these continuous four sub-pixels is respectively " positive and negative, positive and negative " from end point pixel observation, wherein said Second electrode be shaped as the polygon more than four limits, and be arranged in above or below described first electrode.

This case further provides for a kind of fringe field switching (FFS) electrode arrangement, it is characterised in that: it is included in line direction On multiple continuous sub-pixel, the polarity of wherein said multiple continuous sub-pixels be " positive and negative, positive and negative " or " negative, Positive and negative, just " order, but the polarity of two adjacent continuous four sub-pixels is close to mutually with reverse order, wherein said time Pixel has one first electrode and one second electrode, described second electrode be arranged in described first electrode top or under Side, and have multiple side and one reduce capacitive effect device along the plurality of side one of them and arrange.

The present invention provides the driving method of a kind of fringe field switching (FFS) electrode, it is possible to reduce whole second electrode Area, it is possible to reduce the electric capacity of the second electrode in FFS LCD sub-pixel, the charging interval of the second electrode can be shortened, And the response time of LCD can be significantly improved accordingly.

Those skilled in the art, will be to the present invention after the narration reading embodiment in detailed below and appended accompanying drawing Purpose and advantage have understanding more clearly.

Accompanying drawing explanation

Fig. 1 is the top view of a sub-pixel in existing FFS LCD；

Fig. 2 is the top view of a sub-pixel in another kind of existing FFS LCD；

Fig. 3 is the polarity of electrode design of existing fringe field switching (FFS) LCDs (LCD) sub-pixel Schematic diagram；

Fig. 4 (A) is the top view of the FFS LCD of first embodiment of the invention；

Fig. 4 (B) is the top view of first electrode of the FFS LCD in Fig. 4 (A)；

Fig. 4 (C) is the top view of second electrode of the FFS LCD in Fig. 4 (A)；

Fig. 5 (A) is the top view of the FFS LCD of second embodiment of the invention；

Fig. 5 (B) is the top view of first electrode of the FFS LCD in Fig. 5 (A)；

Fig. 5 (C) is the top view of second electrode of the FFS LCD in Fig. 5 (A)；

Fig. 6 (A) is the top view of the FFS LCD of third embodiment of the invention；

Fig. 6 (B) is the top view of first electrode of the FFS LCD in Fig. 6 (A)；

Fig. 6 (C) is the top view of second electrode of the FFS LCD in Fig. 6 (A)；

Fig. 7 (A) is the top view of the FFS LCD of fourth embodiment of the invention；

Fig. 7 (B) is the top view of first electrode of the FFS LCD in Fig. 7 (A)；

Fig. 7 (C) is the top view of second electrode of the FFS LCD in Fig. 7 (A)；

Fig. 8 (A) is the top view of the FFS LCD being marked with cross section tangent line in fourth embodiment of the invention；

Fig. 8 (B) is the profile of the FFS LCD in Fig. 8 (A)；

The schematic diagram that Fig. 9 (A)～the polarity of electrode that Fig. 9 (B) is the present invention the 6th and the 7th embodiment sub-pixel design；

The schematic diagram that Figure 10 (A)～the polarity of electrode that Figure 10 (B) is the present invention the 8th and the 9th embodiment sub-pixel design； And.

Figure 11 (A)～Figure 11 (B) is the schematic diagram of the shape of the tenth embodiment of the invention multiple strip of the first electrode.

Symbol description:

10,20,30,40,50,60,70,90,100: sub-pixel

11: the first electrodes

12,22,23,24: the second electrode

13,66b, 73b, 76b: strip

14: space

15: first area

101,102: side

201,202,203,204: at transmission

31: insulating barrier

66,76: pixel electrode

66a, 73a, 76a: body

63,73: comparative electrode

Detailed description of the invention

The present invention will be described in further detail by following embodiment and coordinate accompanying drawing.It is noted that this The narration of invention the following example is merely to illustrate and describes, and is not used for limiting the invention to any disclosed accurate Form or data.

First embodiment

Refer to Fig. 4 (A), 4 (B) and 4 (C).Fig. 4 (A) is the edge electricity of first embodiment of the invention The top view of field switching (FFS) LCDs (LCD).In Fig. 4 (A), FFS LCD sub-pixel 10 Including FFS structure, this FFS structure includes the first electrode 11 and the second electrode 12, and the first electrode 11 and second In stacked relation between electrode 12.The part that second electrode 12 projects on the first electrode 11 is indicated in figure with dotted line In 4 (A).

Fig. 4 (B) is the top view of the first electrode 11 of the FFS LCD sub-pixel 10 in Fig. 4 (A), and is For the sake of becoming apparent from, Fig. 4 (B) do not shows the second electrode 12.In Fig. 4 (B), the first electrode 11 includes One side 101, second side 102, multiple strip 13, and multiple space 14, plurality of strip 13 is to join Putting between first side 101 and second side 102, each space 14 is then formed at the length that each two is adjacent Between bar 13, or it is formed at strip 13 and two sides between one of them.

Multiple strips 13 and multiple space 14 form first area 15, such as dotted line area encompassed in Fig. 4 (B) Shown in.The electrode material of longitudinal region almost parallel on the first electrode 11 can be removed in processing procedure, comes Defining multiple space 14, between the region removing electrode material, remaining material then defines multiple strip 13, So just can form the first area 15 of the first electrode 11.First electrode 11 can have a rectangular shape, and On first electrode 11, the outer peripheral areas around first area 15 can not have at any transmission, such as hole.

Fig. 4 (C) is the top view of the second electrode 12 of the FFS LCD sub-pixel 10 in Fig. 4 (A), and is For the sake of becoming apparent from, Fig. 4 (C) do not shows the first electrode 11.Second electrode 12 may be located at the first electrode 11 Above or below, and have at least one transmission 201, such as one hole.At this transmission, 201 at the first electrode 11 On projection be in outside first area 15.In Fig. 4 (C), the second electrode 12 has at multiple transmission 201, And at this transmission 201 in FFS structure, and the projection on the first electrode 11 be in first area 15 it Outward.The region at any transmission is not had on second electrode 12, the projection on the first electrode 11, whole will be contained One region 15.

In general, the first and second electrodes 11,12 can be applied in contrary electric charge, the most positive and negative electric charge, from And produce electric field between electrodes.From the point of view of top view, due at transmission 201 be in first area 15 outside, So the projection that the second electrode 12 is on the first electrode 11 can cover whole first area 15, and first area 15 Then include multiple space 14, therefore 201 have no effect on the direction of an electric field in first area 15 at transmission.

At these transmissions, 201 can reduce the area of whole second electrode 12, it is possible to reduce by the second electrode 12 Electric capacity, more thus the charging interval of the second electrode 12 can be shortened, and the response of LCD can be significantly improved accordingly Time.

In the present embodiment, the first electrode 11 can be pixel electrode, and the second electrode 12 can be comparative electrode, And the relative position of the two electrode can exchange.First and second electrodes 11,12 all can be by transparent conductive material system Become, such as tin indium oxide (ITO), stannum oxide, the stannum oxide of Fluorin doped, zinc oxide, aluminum doping zinc oxide, The zinc oxide etc. of gallium doping.Based on idea of the invention, at the transmission of the present invention, the shape of 201 is not limited to Fig. 4 (A) square shown by and 4 (C), and can have arbitrary shape, such as: circle, ellipse, rectangle, Octagonal, irregularly shaped etc..

Second embodiment

Refer to Fig. 5 (A), it is the top view of FFS LCD sub-pixel 20 of second embodiment of the invention.? In Fig. 5 (A), FFS LCD sub-pixel 20 includes FFS structure, this FFS structure include the first electrode 11 with Second electrode 22.There is between first electrode 11 and the second electrode 22 relation of stacking, and the second electrode 22 is Projection on one electrode 11 is then indicated with dotted line.Fig. 5 (B) is the FFS LCD sub-pixel 20 in Fig. 5 (A) The top view of the first electrode, and for the sake of becoming apparent from, Fig. 5 (B) does not show the second electrode 22.Fig. 5 (C) For the top view of the second electrode of the FFS LCD sub-pixel 20 in Fig. 5 (A), and for the sake of becoming apparent from, figure 5 (C) do not show the first electrode 11.FFS LCD sub-pixel 20 in Fig. 5 (A) includes the first electrode 11 With the second electrode 22.In this example it is shown that the first electrode 11 in Fig. 5 (A) and Fig. 5 (B) and The first electrode 11 in Fig. 4 (A) and Fig. 4 (B) of one embodiment has identical structure, and therefore its structure is not Repeat description.Similarly, the second electrode 22 may be located at above or below the first electrode 11, the second electrode 22 and have at least at a transmission 202, such as one transmission strip.At this transmission 202 in FFS structure, And outside the projection on the first electrode 11 is in first area 15.In the present embodiment, the second electrode 22 has Have at 4 transmissions 202, such as 4 transmission strips, and 202 throwings on the first electrode 11 at these 4 transmissions Shadow is all positioned at outside first area 15.

In general, the first and second electrodes 11,22 can be applied in contrary electric charge, the most positive and negative electric charge, from And produce electric field between electrodes.From the point of view of top view, due at transmission 202 be in first area 15 outside, So the projection that the second electrode 22 is on the first electrode 11 can cover whole first area 15, and first area 15 Then include multiple space 14, therefore 202 have no effect on the direction of an electric field in first area 15 at transmission.

At transmission, the quantity of 202, size and shape do not limit, and can adjust the most flexibly, base In idea of the invention, if at transmission 202 on the first electrode the projection on 11 be in outside first area 15. Similarly, the first electrode 11 can be pixel electrode, and the second electrode 22 can be comparative electrode, and the two is electric The relative position of pole can exchange.First and second electrodes 11,22 all can be made up of transparent conductive material, such as oxygen Change indium stannum (ITO), stannum oxide, the stannum oxide of Fluorin doped, zinc oxide, the zinc oxide of aluminum doping, the oxygen of gallium doping Change zinc etc..

Similarly, 202 the area of whole second electrode 22 can be reduced at these transmissions, it is possible to reduce second The electric capacity of electrode 22, more thus the charging interval of the second electrode 22 can be shortened, and LCD can be significantly improved accordingly Response time.

From the foregoing, 201,202 can be transmission hole or thoroughly at the transmission in first and second embodiments Empty strip.Additionally, these transmission holes or transmission strip can be combined, in an embodiment.The most just Being to say, based on idea of the invention, the second electrode can have transmission hole and transmission strip the most simultaneously.

3rd embodiment

Refer to Fig. 6 (A), it is the top view of FFS LCD sub-pixel 30 of third embodiment of the invention.? In Fig. 6 (A), FFS LCD sub-pixel 30 includes FFS structure, and this FFS structure includes the first electrode 11 and Two electrodes 23.First electrode 11 and second electrode 23 relation in stacking, and the second electrode 23 is at the first electrode Projection on 11 is shown in phantom.Fig. 6 (B) is the first electrode of the FFS LCD sub-pixel 30 in Fig. 6 (A) The top view of 11, and for the sake of becoming apparent from, Fig. 6 (B) does not show the second electrode 23.Fig. 6 (C) is Fig. 6 (A) top view of the second electrode 23 of the FFS LCD sub-pixel 30 in, and for the sake of becoming apparent from, Fig. 6 (C) the first electrode 11 is not shown.FFS LCD sub-pixel 30 in Fig. 6 (A) include the first electrode 11 with Second electrode 23.Similarly, in this example it is shown that the first electrode in Fig. 6 (A) and Fig. 6 (B) 11 have an identical structure with the first electrode 11 in Fig. 4 (A) and Fig. 4 (B) of first embodiment, therefore its Structure is not repeated to describe.Similarly, the second electrode 23 in the present embodiment may be located at the top of the first electrode 11 Or lower section, the second electrode 23 also has at least at a transmission 203, such as transmission hole.At this transmission 203 Position is in FFS structure, and outside the projection on the first electrode 11 is in first area 15.At the present embodiment In, the second electrode 23 has at multiple transmission 203, the most multiple transmission holes, and 203 at these transmissions Projection on one electrode 11 is all positioned at outside first area 15.

Compared to the second electrode 12 in Fig. 4 (C), the second electrode 23 warp in the present embodiment Fig. 6 (C) Cross and be specifically designed, and the shape with circumference does not has (i.e. clipping) four angles, to enter one as a rectangle Step reduces the area of the second electrode 23.

In general, the first and second electrodes 11,23 can be applied in contrary electric charge, the most positive and negative electric charge, from And produce electric field between electrodes.From the point of view of top view, due at transmission 203 be in first area 15 outside, So the projection that the second electrode 23 is on the first electrode 11 can cover whole first area 15, and first area 15 Then include multiple space 14, therefore 203 have no effect on the direction of an electric field in first area 15 at transmission.

Similarly, the first electrode 11 can be pixel electrode, and the second electrode 23 can be comparative electrode, and this two The relative position of individual electrode can exchange.During at transmission, the shape of 203 is not limited to Fig. 6 (A) and Fig. 6 (C) Shown is square, and can be any shape.First and second electrodes 11,23 all can be by transparent conductive material system Become, such as tin indium oxide (ITO), stannum oxide, the stannum oxide of Fluorin doped, zinc oxide, aluminum doping zinc oxide, The zinc oxide etc. of gallium doping.

Similarly, 203 the area of whole second electrode 23 can be reduced at these transmissions, it is possible to reduce second The electric capacity of electrode 23, more thus the charging interval of the second electrode 23 can be shortened, and LCD can be significantly improved accordingly Response time.

4th embodiment

Refer to Fig. 7 (A), it is the top view of FFS LCD sub-pixel 40 of fourth embodiment of the invention.? In Fig. 7 (A), FFS LCD sub-pixel 40 includes FFS structure, this FFS structure include the first electrode 11 with Second electrode 24.First electrode 11 and second electrode 24 relation in stacking, and the second electrode 24 is at the first electrode Projection on 11 is shown in phantom.Fig. 7 (B) is the first electrode of the FFS LCD sub-pixel 40 in Fig. 7 (A) The top view of 11, and for the sake of becoming apparent from, Fig. 7 (B) does not show the second electrode 24.Fig. 7 (C) is Fig. 7 (A) top view of the second electrode 24 of the FFS LCD sub-pixel 40 in, and for the sake of becoming apparent from, Fig. 7 (C) the first electrode 11 is not shown.FFS LCD sub-pixel 40 in Fig. 7 (A) include the first electrode 11 with Second electrode 24.Similarly, in this example it is shown that the first electrode in Fig. 7 (A) and Fig. 7 (B) 11 have an identical structure with the first electrode 11 in Fig. 4 (A) and Fig. 4 (B) of first embodiment, therefore its Structure is not repeated to describe.Similarly, the second electrode 24 in the present embodiment may be located at the top of the first electrode 11 Or lower section, the second electrode 24 also has at least at a transmission 204, such as transmission strip.At this transmission 204 Position is in FFS structure, and outside the projection on the first electrode 11 is in first area 15.At the present embodiment In, the second electrode 24 has at multiple transmission 204, the most multiple transmission strips, and 204 at these transmissions Projection on one electrode 11 is all positioned at outside first area 15.

Compared to the second electrode 22 in the second embodiment Fig. 5 (C), the second electrode in the present embodiment Fig. 7 (C) 24 pass through and are specifically designed, and have and have polygonal profile, and polygon has n limit, and n is more than 4, namely More than the polygon on 4 limits, the most octagonal n is equal to 8.Area ratio second embodiment of the present embodiment the second electrode In the area of the second electrode 22 less, to reduce the electrode material region of the second electrode 24 further at the first electrode On projected area, and still maintain and cover without the projection on the first electrode of the region at any transmission on the second electrode 24 Cover whole first area 15.The polygon of the second electrode 24 in the present embodiment 7C figure is that a rectangle deducts one section Go the shape obtained by part, and the projection of this truncated part is that position is within this first electrode 11.

Similarly, the first and second electrodes 11,24 can be applied in contrary electric charge, the most positive and negative electric charge, thus Produce electric field between electrodes.From the point of view of top view, due at transmission 204 be in first area 15 outside, So the projection that the second electrode 24 is on the first electrode 11 can cover whole first area 15, and first area 15 Then include multiple space 14, therefore 204 have no effect on the direction of an electric field in first area 15 at transmission.

At transmission, the quantity of 204, size and shape do not limit, and can adjust the most flexibly, base In idea of the invention, if at transmission 204 on the first electrode the projection on 11 be in outside first area 15. Similarly, the first electrode 11 can be pixel electrode, and the second electrode 24 can be comparative electrode, and the two is electric The relative position of pole can exchange.First and second electrodes 11,24 all can be made up of transparent conductive material, such as oxygen Change indium stannum (ITO), stannum oxide, the stannum oxide of Fluorin doped, zinc oxide, the zinc oxide of aluminum doping, the oxygen of gallium doping Change zinc etc..

In the present embodiment, at transmission 204 and second the octagonal _type layout of electrode 24 all can reduce whole second The area of electrode 24, it is possible to reduce the electric capacity of the second electrode 24, more thus the second electrode 24 can be shortened Charging interval, and the response time of LCD can be significantly improved accordingly.

In order to be illustrated more clearly that the present invention, the present embodiment is further illustrated in Fig. 8 (A) and Fig. 8 (B).Fig. 8 (A) it is the top view of the FFS LCD sub-pixel 40 being marked with cross section tangent line in fourth embodiment of the invention.Fig. 8 (A) in addition to many cross section tangent line I, remaining is completely the same with Fig. 7 (A).Fig. 8 (B) is in Fig. 8 (A) FFS LCD sub-pixel 40 along the profile of cross section tangent line I.In the FFS LCD sub-pixel 40 of the present embodiment, Any liquid crystal material can not had to be placed in therebetween between its first electrode 11 and the second electrode 24.At Fig. 8 (B) In, insulating barrier 31 is arranged between the first electrode 11 and the second electrode 24, to separate the two electrode.Insulating barrier 31 can be by made by oxide, nitride or other insulant.Similarly, the present invention second, third and the Four embodiments can also be respectively arranged with an insulating barrier and be arranged between the first electrode 11 and the second electrode 22,23,24, with Separate the two electrode, and set up electric field between the two electrode.

Summary, the peripheral shape of the second electrode is not limited in the shape shown by the third and fourth embodiment, Any shape can also be flexibly designed to, as long as the area of the second electrode is less than the area of the second original rectangle of electrode, To reduce the electric capacity of the second electrode further.Additionally, the shape with the second electrode of less area can also be with first Combine at the transmission being previously mentioned with the second embodiment utilization, reduces in FFS LCD sub-pixel second further The electric capacity of electrode.

5th embodiment

FFS LCD in the present embodiment can include FFS structure, and this FFS structure includes the first electrode 11 He Second electrode.Second electrode is configured at above or below the first electrode 11, and wherein the second electrode has multiple edge The device of capacitive effect is reduced with at least one.This reduce capacitive effect device be arranged in the plurality of edge at least its One of, and first electrode 11 of the present embodiment can with in above-mentioned first, second, third and fourth embodiment First electrode is identical.The device position of reduction capacitive effect is in FFS structure, and can be at transmission, including describing Transmission hole 201 in the first and second embodiment and transmission strip 202, or any megohmite insulant is configured at transmission Hole 201 and the original position of transmission strip 202, to reach to reduce the purpose of the second electrode capacitance.

Similarly, reduce the not restriction of the quantity of device of capacitive effect, size and shape, can be according to actual needs Adjust neatly, based on idea of the invention, if the projection that the device of reduction capacitive effect is on the first electrode 11 It is in outside first area 15.Similarly, the first electrode 11 can be pixel electrode, and the second electrode can be Comparative electrode, and the relative position of the two electrode can exchange.First and second electrodes of the present embodiment all can be by thoroughly Bright conductive material is made, and such as tin indium oxide (ITO), stannum oxide, the stannum oxide of Fluorin doped, zinc oxide, aluminum are mixed The zinc oxide etc. of miscellaneous zinc oxide, gallium doping.

Second electrode can have the device of multiple reduction capacitive effect, and these reduce the device of capacitive effect at the first electrode On projection, at least two of which limit being position on the edge around fringe field switching (FFS) region.At this In embodiment, the second electrode has the device of multiple reduction capacitive effect, and these reduce the device of capacitive effect first Having the projection of symmetry on electrode, this projection is position two of which phase on the edge Zone switched around fringe field To limit.According to present invention spirit, the projection on the first electrode of the device of these reduction capacitive effect not necessarily must be right Claim.Fringe field in first electrode is Zone switched can by the most almost parallel several spaces and the most substantially Almost parallel several strips are defined.Space and strip in fringe field is Zone switched can have identical size, Can also have different sizes.

Sixth embodiment

Referring to Fig. 9 (A), it is fringe field switching (FFS) LCDs of sixth embodiment of the invention (LCD) schematic diagram of the polarity of electrode design of sub-pixel 90.In Fig. 9 (A), FFS LCD can also wrap Including such as Fig. 7 (A)～the FFS structure of Fig. 7 (C), wherein said sub-pixel 90 has one first electrode and one second electrode, Described second electrode is arranged in above or below described first electrode, and has multiple side and a reduction electric capacity effect The device of fruit along the plurality of side one of them and arrange, then the collocation polarity of electrode such as the sub-pixel 90 of Fig. 9 (A) sets Meter, the design of i.e. so-called " row are anti-and four mirror images are anti-".Described fringe field switching (FFS) electrode arrangement is included in phase Multiple continuous sub-pixel 90 on colleague, wherein, when one first frame (frame), the plurality of continuous sub-pixel The order of polarity tool one " positive and negative, positive and negative " of 90, but the polarity of two adjacent continuous four sub-pixels 90 is with on the contrary Order is close to mutually, namely the order of " negative, positive, negative, positive ".Therefore, the polar alignment of continuous eight sub-pixels 90 Can merge and be considered as: " positive and negative, positive and negative, negative, positive, negative, positive ", and continue arrangement in this aligned identical mode Go down.

7th embodiment

Referring to Fig. 9 (B), it is fringe field switching (FFS) LCDs (LCD) of seventh embodiment of the invention The polarity of electrode design diagram of sub-pixel 90.In Fig. 9 (B), FFS LCD can also include such as Fig. 7 (A)～ The FFS structure of Fig. 7 (C), wherein said sub-pixel 90 has one first electrode and one second electrode, described second electricity Pole is arranged in above or below described first electrode, and has multiple side and the device edge of a reduction capacitive effect The plurality of side one of them and arrange, then collocation as Fig. 9 (B) sub-pixel 90 polarity of electrode design, i.e. what is called The design of " four mirror images ".Described fringe field switching (FFS) electrode arrangement is included on first and second line direction Multiple continuous sub-pixels 90, wherein, when one first frame (frame), the polarity of the plurality of continuous sub-pixel 90 The order of tool one " positive and negative, positive and negative ", but the polarity of two adjacent continuous four sub-pixels 90 is mutually tight with reverse order Neighbour, namely the order of " negative, positive, negative, positive ".Therefore, the polar alignment of continuous eight sub-pixels 90 can merge and regards For " positive and negative, positive and negative, negative, positive, negative, positive ", and go down with the arrangement that continues of this aligned identical mode.

But, for the multiple continuous sub-pixel 90 on the 3rd and fourth line, when one first frame (frame), The order of polarity tool one " negative, positive, negative, positive " of the plurality of continuous sub-pixel 90, but two adjacent continuous four times The polarity of pixel 90 is close to mutually with reverse order, namely the order of " positive and negative, positive and negative ".Therefore, continuous eight The polar alignment of sub-pixel 90 can merge and is considered as: " negative, positive, negative, positive, positive and negative, positive and negative ", and with this The arrangement that continues of aligned identical mode is gone down.

After the 5th to the 8th row, the most continuous four row go down with the arrangement that continues of the arrangement mode of first to fourth row.

It is known that the polar alignment of each sub-pixel is with described in described the first row from above-mentioned 6th and the 7th embodiment On second row, the polar alignment of each sub-pixel is identical；And the polar alignment of each sub-pixel can be with institute in the third line and fourth line State the polar alignment of each sub-pixel on the first row and the second row identical or different；And the out of the ordinary of upper continuous four sub-pixels that go together Polarity, then with the opposite polarity out of the ordinary of adjacent continuous four sub-pixel.

8th embodiment

Referring to Figure 10 (A), it is fringe field switching (FFS) LCDs of eighth embodiment of the invention (LCD) schematic diagram of the color design of sub-pixel 100.In Figure 10 (A), FFS LCD sub-pixel 100 Color be designed with red (R), green (G) and blue (B) is trichroism designs, if the i-th of the 4th × (j-1)+1 article of second electrode The coordinate of individual sub-pixel 100 is set to (i, 4 × (j-1)+1), and as i=1～3, the sub-pixel 100 of described coordinate depends on Sequence is R, G and B；As i=4～6, the color of the sub-pixel 100 of described coordinate be still sequentially R, G and B.If the coordinate of the kth sub-pixel 100 of the 4th × (j-1)+2 article of second electrode be set to (k, (4 × (j-1)+2), As k=1～3, sub-pixel 100 color of described coordinate is sequentially B, R and G.If the 4th × (j-1)+3 article The coordinate of the m-th sub-pixel 100 of two electrodes is set to (m, 4 × (j-1)+3), as m=1～3, described coordinate The color of sub-pixel 100 be sequentially G, B and R.If the n-th of described 4th × (j-1)+4 article of second electrode The coordinate of sub-pixel 100 is set to (n, 4 × (j-1)+4), as n=1～3, the sub-pixel 100 of described coordinate Color is sequentially B, R and G.Above-mentioned design can be applicable to the FFS LCD sub-pixel electrode of foregoing embodiments Polarity design and FFS structure, fully or partially combine and applied.

9th embodiment

Refer to Figure 10 (B), it is fringe field switching (FFS) LCDs of ninth embodiment of the invention (LCD) schematic diagram of the color design of sub-pixel 100.In Figure 10 (B), FFS LCD sub-pixel 100 Color be designed with red (R), green (G), blue (B) and white (W) four color and design, if described 2nd × (j-1)+1 article second The coordinate of pth the sub-pixel 100 of electrode is set to (p, 2 × (j-1)+1), as p=1～4, described coordinate The color of sub-pixel 100 is sequentially R, G, W and B；As p=5～8, the sub-pixel 100 of described coordinate Color is sequentially R, G, W and B.If the q-th sub-pixel 100 of described 2nd × (j-1)+2 article of second electrode Coordinate be set to that (, as q=1～4, the color of the sub-pixel 100 of described coordinate is sequentially for q, (2 × (j-1)+2) W, B, R and G.Above-mentioned design also apply be applicable to the FFS LCD sub-pixel polarity of electrode of foregoing embodiments and sets Meter and FFS structure, fully or partially combine and applied.

In various embodiments of the present invention, the plurality of first electrode can arrange according to laterally (direction at once), and described Multiple second electrodes can be according to longitudinally (direction i.e. arranged) arrangement.Certainly, the plurality of first electrode and the second electrode Orientation is the most interchangeable, and the orientation of the plurality of first electrode and the second electrode can orthogonal intersect, Or cross one another with a nonparallel direction.

Tenth embodiment

Embodiment:

A, the driving method of a kind of fringe field switching (FFS) electrode, comprise the following steps: to arrange along a first direction The most parallel a plurality of multiple first electrodes；Along a second direction, the most parallel a plurality of multiple second electrodes, institute are set Stating first direction to intersect with described second direction, the projection of described first electrode is each with the projection of described second electrode Crossover location has a sub-pixel and is positioned at continuous four sub-pixels of described first direction and forms a main pixel；With And when one first frame (frame), control to be positioned at the of described 4th × (j-1)+1 and the 4th × (j-1)+2 article of second electrode The polarity (polarity) of described continuous four sub-pixels of main pixel described in odd number be sequentially " positive and negative, positive and negative ", And the polarity of described continuous four sub-pixels of main pixel described in even number is sequentially " negative, positive, negative, positive "； Wherein j is positive integer, and described second electrode be shaped as one more than the polygon on four limits, and be arranged in described first Above or below electrode.

B, method as described for examples A, also include controlling described 4th × (j-1) the+3 and the 4th × (j-1)+4 article second Main pixel described in the polarity of described continuous four sub-pixels of main pixel described in the odd number of electrode and even number The polarity of described continuous four sub-pixels is sequentially respectively selected from " negative, positive, negative, positive ", " positive and negative, positive and negative " And " positive and negative, positive and negative ", " negative, positive, negative, positive " one of them.

C, method as described in embodiment A～B, described first electrode has first side and a second side, and described two There are multiple strip and the multiple spaces between the plurality of strip, the plurality of strip and described many between side Individual space forms a first area, the plurality of strip has a shape, described in be shaped as vertical bar or non-straight strip, its Described in non-straight strip include selected from arc, S-shaped, fold-line-shaped and zigzag one of them and described second electricity Have at least one transmission, and the projection at described transmission is positioned at outside described first area.

D, method as described in embodiment A～C, described a plurality of first electrode has Article 1 first electrode and Article 2 the first electrode: the bending of the described non-straight strip of the plurality of electrode in wherein said Article 1 the first electrode Direction is identical；And the overbending direction of the described non-straight strip of the plurality of electrode in described Article 2 the first electrode with The overbending direction of the described non-straight strip of the plurality of electrode in described Article 1 the first electrode includes from identical, mutual For left and right mirror image and up and down mirror image one of them.

E, method as described in embodiment A～D, the method also includes providing a FFS structure and an insulating barrier, its In: described FFS structure includes described first electrode and described second electrode；Described second it is formed at described transmission In electrode, and it is positioned at described FFS structure；Described insulating barrier is arranged in described first electrode and described second electrode Between；Described first electrode and described second electrode comprise a transparent conductive material respectively；And described insulating barrier comprises Oxide or nitride.

F, method as described in embodiment A～E, described first electrode and described second electrode are storehouse relation；Described The projection in the second electrode without the region at described transmission covers the plurality of space；Transmission is included at described transmission Hole or transmission strip；When described second electrode is a comparative electrode, described first electrode is a pixel electrode；With And when described second electrode is a pixel electrode, described first electrode is a comparative electrode.

G, method as described in embodiment A～F, the method also includes providing a FFS structure and an insulating barrier, its In: described FFS structure includes described first electrode and described second electrode；Described polygon is a rectangle deduction one Shape obtained by truncated part, and the projection of described truncated part is that position is within described first electrode；Described insulation Layer is arranged between described first electrode and described second electrode；Described first electrode and described second electrode comprise respectively One transparent conductive material；And described insulating barrier comprises oxide or nitride.

H, method as described in embodiment A～G, described continuous four sub-pixels sequentially include the first color, the second color, Tertiary color and the 4th color；Wherein said first color, the second color, tertiary color and the 4th color all selected from red, green, blue, White and yellow is arbitrary.

I, method as described in embodiment A～H, the seat of the i-th sub-pixel of described 4th × (j-1)+1 article of second electrode Mark be set to (i, 4 × (j-1)+1), as i=1～3, the sub-pixel of described coordinate be sequentially the first color, the second color with And tertiary color.

L, method as described in embodiment A～I, as i=4～6, the sub-pixel color of described coordinate is sequentially described First color, the second color and tertiary color.

M, method as described in embodiment A～L, the kth sub-pixel of described 4th × (j-1)+2 article of second electrode Coordinate is set to that (, as k=1～3, the sub-pixel color of described coordinate is sequentially the described 3rd for k, (4 × (j-1)+2) Color, the first color and the second color；The coordinate of the m-th sub-pixel of described 4th × (j-1)+3 article of second electrode is set For (m, 4 × (j-1)+3), as m=1～3, the sub-pixel color of described coordinate is sequentially described second color, tertiary color And first color；And.

The coordinate of the n-th sub-pixel of described 4th × (j-1)+4 article of second electrode is set to (n, 4 × (j-1)+4), when During n=1～3, the sub-pixel color of described coordinate is sequentially described tertiary color, the first color and the second color.

N, method as described in embodiment A～M, pth the sub-pixel of described 2nd × (j-1)+1 article of second electrode Coordinate is set to (p, 2 × (j-1)+1), as p=1～4, the sub-pixel of described coordinate be sequentially the first color, second Color, tertiary color and the 4th color；As p=5～8, the sub-pixel color of described coordinate be sequentially described first color, Two colors, tertiary color and the 4th color；And the coordinate of the q-th sub-pixel of described 2nd × (j-1)+2 article of second electrode Be set to (q, (2 × (j-1)+2), as q=1～4, the sub-pixel color of described coordinate be sequentially described tertiary color, 4th color, the first color and the second color.

O, a kind of fringe field switching (FFS) electrode arrangement, including: arrange the most parallel a plurality of along a first direction First electrode, these first electrodes include at least Article 1, Article 2, Article 3 and Article 4 the first electrode；And The most parallel a plurality of second electrode is set along a second direction, wherein: this first direction intersects with this second direction； The projection of this first electrode has a sub-pixel with each lap position of the projection of this second electrode；It is positioned at this first party To initial continuous four sub-pixels form a main pixel, be wherein positioned on described Article 1 and described Article 2 the first electrode The opposite polarity of polarity and the second continuous four sub-pixels of the first continuous four sub-pixels；And these continuous four sub-pixels Polarity is respectively " positive and negative, positive and negative " from end point pixel observation, and being shaped as of wherein said second electrode is more than The polygon on four limits, and be arranged in above or below described first electrode.

P, as described in embodiment O fringe field switching (FFS) electrode arrangement, the pole of described first continuous four pixels Property is " positive and negative, positive and negative ", and the polarity of described second continuous four sub-pixels is " negative, positive, negative, positive ", with And the 3rd continuous four sub-pixels being positioned on described Article 3 and described Article 4 the first electrode and the 4th continuous four pictures The polarity of polarity and first continuous four sub-pixels being positioned on described Article 1 and described Article 2 the first electrode of element with The polarity of the second continuous four sub-pixels is identical or contrary.

Q, a kind of fringe field switching (FFS) electrode arrangement, including multiple continuous sub-pixel in the row direction, wherein The polarity of the plurality of continuous sub-pixel is " positive and negative, positive and negative " or the order of " negative, positive, negative, positive ", but The polarity of two adjacent continuous four sub-pixels is close to mutually with reverse order, and wherein said sub-pixel has one first electrode and Second electrode, described second electrode is arranged in above or below described first electrode, and has multiple side and Reduce capacitive effect device along the plurality of side one of them and arrange.

Although the present invention is disclosed above by preferred embodiment, but it is not limited to the present invention, any knows ability The technical staff in territory, without departing from the spirit and scope of the present invention, can change and retouching.Therefore the guarantor of the present invention Scope of protecting is as the criterion with appended protective scope of the claims.This case by those of ordinary skill in the art made various Modify, all without departing from appended scope of the claims.