CN1963643A - Bonding apparatus and system for liquid crystal display device - Google Patents

Fig. 1 is according to prior art, the sectional view of LCD binding appts during load module.Among Fig. 1, binding appts is provided with

10,

21,

22, sealant exit portion (not shown), liquid crystal drip-

30,

31,

32, chamber

40 and the platform

64 that forms profile.Sealant exit portion (not shown) and liquid crystal drip-

30 are attached on the side of

10, upper and

31 and 32 is separated from each other.

Chamber

40 comprises: driving motor, be used for optionally

32 being moved to the position during the bonding program, and perhaps move to and carry out that sealant discharges and the position of the instillation of liquid crystal material.

Platform

64 is provided with motor,

61,

62,

63, ball-

65 and nut shell 66.

21 is kept by the

61 that is attached on the shell 66.

66 usefulness line slideways are attached on the

67, and

64 is attached on the

68 on the

67, are used for along direction

66 up and down.With ball-

65 and

66 transmission driving powers,

66 is connected with

66 through

69.

Explain the process steps of making LCD according to prior art with binding appts now.At first,

51 is loaded on the

21,

52 is loaded on the lower platform 22.Therefore, as shown in Figure 1, the bottom section criminal that will have

22 with chamber

40 moves to the position that is used for sealant coating and liquid crystal drip-injection.

Below, as shown in Figure 2, when finishing sealant coating and liquid crystal drip-injection with sealant exit portion (not shown) and liquid crystal drip-

30,

32 is moved to the position that is used for bonding upper and

51 and 52 with chamber mobile system 40.Then, aim at upper and

31 and 32, upper and

31 and 32 is attached together to form airtight chamber with chamber mobile system 40.Below, reduce airtight indoor pressure with at airtight indoor generation vacuum state with vacuum system.Then,

61 is moved in a downward direction, upper and

51 and 52 is bonded together thereby

21 moved to motor 64.

69 plays pressure transducer, is used for the load

64 that produces with reference to load cell 69.Therefore, the value that the amount control bit of loading pressure can be preset.

Yet, following problem is arranged according to the binding appts of prior art.At first, after the repeated use cycle, be used to make the change in location of

21 along the system that direction up and down moves.Therefore, take place because of the mistake due to upper mounting plate smooth.In addition, because the

65 of platform mobile system receives driving force from driving

64,, before initial treatment, be difficult to realize the accurate smooth setting of

21 so that

21 is moved in a downward direction with accurate power.

The second, the wearing and tearing of the special part of

21 can cause the special part place of upper and

51 and 52 bonding bad.Therefore, when the difference in height that takes place along the lower surface of

21, upper and

51 and 52 bonding be defective.For example, as shown in Figure 3, during bonding upper and

51 and 52, the disperse of liquid crystal material LC distributes not exclusively.Therefore, between adjacent seals agent part, form gap S, thereby stop the disperse of liquid crystal material LC equalization.For example, when a part that falls to having the

52 of liquid crystal material LC thereon is higher than the part of sealant, even when being coated with the insufficient pressurized of the part of sealant thereon, load cell 69 (among Fig. 1 and 2) also is read as upper and

51 and 52 bonding fully.Like this, the insufficient pressurized of sealant, hermetic unit breaks.The sealing of breaking causes the bonding inappropriate of upper and

51 and 52, and surrounding air is infiltrated in the device.

Fig. 4 is the skeleton view according to example compression system of the present invention.Among Fig. 4, compression system can be positioned in the

100, be used for bonding upper and

510 and 520.Compression system can comprise upper space and interior

210 and the

220 of lower space that is positioned at vacuum chamber 100.In addition, compression system can comprise main compression system and a plurality of additional

210 and 220 core above and/or under main compression system can be positioned at are used for during adhesion process upwards and

510 and 520 is exerted pressure.

Main compression system can comprise:

311 is used to make main compression system edge direction up and down to move;

312 is used to make

311 edge directions up and down to move;

313 is with

311 couplings connection; With main

314, be connected with nut shell 313.

312 can and can be attached on the framework (not shown) with

311 couplings connection.Main

314 can be connected with the core of the top surface of

210, perhaps can be connected with the core of the basal surface of lower platform 220.In addition, main compression system can comprise

315, is used for changing applied pressure by main

314, and can be attached on the

311.

Additional compression system can be adhered to along the outer surface of upper and

210 and 220, is used for applying compensatory pressure or additonal pressure during the adhesion process of upper and

510 and 520.Additional compression system can comprise at least one

321, at least one

322, with the

323 of

321 couplings connection, with secondary

324 and at least one secondary load cell 325 of

323 couplings connection.

321 can join with

322 couplings, and

322 can be attached on the framework (not shown).

322 can be optionally along up and down direction displaced

321, be used for during adhesion process upwards and

510 and 520 is exerted pressure.Secondary

324 can adhere to along the outer peripheral portion of the top surface of

210, perhaps can adhere to along the outer peripheral portion of the basal surface of lower platform 220.For example, each secondary

324 can be at each angle of

210 or the pars intermedia office of the minor face of the center section on the long limit of

210 or

210 be attached on the upper surface of upper mounting plate 210.In addition, each secondary

324 can be at each angle of

220 or the pars intermedia office of the minor face of the center section on the long limit of

220 or

220 be attached on the basal surface of lower platform 220.Therefore, can carry out the change in location formation compensation of upper and

210 and 220 because of the uneven wear of upper and

210 and 220.

Secondary load cell 325 can be connected with

321 with change and is applied to pressure on the secondary screw axis 321.

315 can be connected with a controller (not shown) or each controller (not shown) with secondary load cell 325, to be controlled at the operation of binding appts by transmission feedback/control signal.

In addition, can provide flatness measuring system (not shown),, be used for determining that the specific position place of upper and

210 and 220 takes place departs from or wear and tear such as position transducer (optical sensor), indicating gauge and feeling of stress machine-glazed paper.Can be attached to the inside or the outside of

100 such as the multiple position transducer of optical sensor.Therefore, sensor provides the real-time measurement that departs from.

In the compression system of binding appts of the present invention, driving

312 and 322 can be attached on the framework (not shown), perhaps be attached on the outer wall of

100, wherein,

314 can be connected with 220 with upper and

210 with 324, and they can be by the top or the bottom of vacuum chamber 100.Like this, upper and

210 and 220 can receive driving force with

313 and 323 through

311 and 321 respectively.Therefore, can seal the part of the

100 that joins with

314 and 324 couplings, be used for during adhesion process, keeping the vacuum state of

100.

Binding appts of the present invention can comprise:

311 is used for moving

210 along direction up and down; With 4

321, be used to provide because of

210 lacks the correction that flatness caused, and be used for before the starting stage of beginning adhesion process, setting the flatness reference value of upper mounting plate 210.Therefore, when taking place because of the prolongation use or wearing and tearing departing from of causing, can during adhesion process, apply different pressure.

Fig. 5 is the sectional view according to the example compression system of the present invention in vacuum chamber.Among Fig. 5, when repeating to drive binding appts, can wear and tear upper and

210 and 220.Therefore, upper and

210 can be not exclusively parallel with 220 surface.When the special part of determining

210 when small part is worn and torn, departure degree S and the position coordinates that depart from part can be stored in the controller (not shown).

Fig. 6 is according to the present invention, the sectional view of compression system before bonding program.Among Fig. 6, when starting binding appts, can substrate 510 and 520 be loaded on upper and

210 and 220 with

300, upper and

210 and 220 is positioned at respectively in the vacuum chamber 100.Then, after respectively

510 and 520 being loaded on upper and

210 and 220, can sealed

100.

Fig. 7 is according to the present invention, the sectional view of the compression system during bonding program.Among Fig. 7, the

100 of can finding time, the controller (not shown) can drive driving

312 and 322, so that the

311 and 321 that is connected with

210 moves in a downward direction.During with controller

311 and 321, can determine the departure degree S of the special part of upper and

210 and 220.Then, can calculate the desired offset R of departure degree, can determine the position of departing from, be used for set that a

321 moves down apart from the time compensation calculate value R.The calculating and the compensation method of offset be can carry out with auto-programming and automatic program control (not shown), calculating and the compensation method of carrying out offset with individual's manual operation perhaps can be calculated by hand.

During adhesion process, be attached to the amount that

315 and 325 on main compression system and the additional compression system can continue to measure the pressure of

311 and 321 supplies of secondary screw axis.Therefore,

315 and 325 can provide feedback signal to be transferred to the control signal of driving

312 and 322 with change to the controller (not shown).Like this,

315 and 325,

311,

321 and driving

312 and 322 can compensate irrelevance S (among Fig. 5).

For example, compare with the other parts of

210 when the special angle part of

210 and to depart from about 2mm, the controller (not shown) can be set the rotation amount of

321, makes secondary

324 on the special angle part be attached to

210 can move the distance corresponding to 2mm bias in a downward direction.In addition,

323 can move in a downward direction according to rotation amount, and purpose is that secondary

324 is moved in a downward direction.Therefore, after additional compression system compensation departs from, can drive driving

312 and 322 according to compensation settings, thereby

510 and 520 is bonded together.

In addition, if the part of the upper mounting plate that departs from 210 is positioned at the office, bight of

210, but, can compensate the setting value of the

322 of adjacent pair

324 at the part place that is positioned the

210 between the adjacent pair

324.

Fig. 8 is the sectional view that replenishes compression system according to example of the present invention.Among Fig. 8, additional compression system can comprise upper and

210 and 220, and wherein,

210 can comprise pressing

410, at least one raise

420 and at least one drive part 430.Similarly, though do not show,,

220 can also comprise pressing part, at least one raise axle and at least one drive

410 can form a unit, is used for by applying displacing force from the

420 that raises moving along direction up and down.The

420 that raises can pass through

210, and

210 can comprise that along the working face of

210 promptly the depression 211 of basal surface location is used to hold pressing part 410.

410 can comprise the material that prevents that

510 from scratching.

Upper and

510 that is pressed down by

410 and 520 part can comprise the superincumbent sealant material of coating, perhaps can comprise forming superincumbent virtual region.The depression 211 that is formed in the

210 can be coated with sealant thereon corresponding to the part of upper and

510 and 520, and the depression 211 that perhaps is formed in the

210 can be corresponding to virtual region.

430 can move through the

420 edge directions up and down that raise.

430 can comprise hydraulic pressure or air pressure cylinder or the motor that is used to exert pressure.Can determine the sum of drive part, purpose be equably with the pressure transmission of

430 to pressing

410.

Fig. 9 is the skeleton view according to additional compression system of the present invention.Among Fig. 9, pressing

410 can comprise the array of the crossbeam that interconnects.Each

430 can be through the angle of raise

420 and the crossbeam of outermost and is connected at the infall of interior crossbeam.

Figure 10 is according to the present invention, the sectional view of the additional compression system before bonding program.Among Figure 10, during adhesion process, in case upper and

510 and 520 is loaded on upper and

210 and 220

100 of just can finding time respectively.Then, main compression system just can mobile in a downward direction

210, thereby the upper and

510 and 520 that remains on respectively on upper and

210 and 220 is bonded together.

Figure 11 is according to the present invention, the sectional view of the additional compression system during bonding program.Among Figure 11, during adhesion process is carried out, can start additional compression system.For example, along with controller (not shown) controlling and driving

430, drive

430 can move the

420 that raises in a downward direction, and this controller separates with the controller (not shown) of the

312 that is used for main compression system.Below, along with the

420 that raises moves in a downward direction, the depression 211 interior

410 that are positioned at

210 can be prominent to a height from 211 (the Fig. 8) that cave in.Therefore,

410 can be from the baseplane projection of upper mounting plate 210.Like this, the special part of the

510 relative with

410 can be provided with the pressure of the other parts that are higher than

510, makes that the special part of

510 can be more bonding with

520 more tightly than the other parts of upper substrate.For example, the special part that is provided with the

510 of high pressure can comprise sealant material and/or dividing plate, and the other parts that are provided with the

510 of low-pressure can comprise liquid crystal material.

One finishes adhesion process, and main compression system just can mobile in the upward direction upper mounting

210, and the

430 that replenishes the compression system device can move in the upward direction to raise and

420 cave in 211 so that

410 is received into.In addition, along with discharging

520 is appended on the upper mounting

210,

520 separates with upper mounting

210, thereby bonding back upper and

510 and 520 can remain on

220 places.Below, can remove bonding back upper and

510 and 520 from

100 making with the mechanical arm (not shown) after

100 returns atmospheric pressure.

Figure 12 is the planimetric map according to another additional compression system of the present invention.Among Figure 12, additional compression system can comprise: upper mounting

210, have a plurality of

410, and be used to make each unit area pressurized that is coated with sealant material on it; With a plurality of

430, be connected with

410 through a plurality of risings axle 420.Therefore, because the eroded area of upper mounting

210, can each unit area of separate compensation.The advantage of replenishing compression system is and can only exerts pressure to the special element zone when being necessary to apply additonal pressure.

Figure 13 has illustrated and has shown the planimetric map that replenishes compression system according to another example of the present invention.Among Figure 13, additional compression system can comprise: upper mounting

210, a plurality of

410 are arranged, with make be coated with sealant material on it respectively organize the unit area pressurized; With a plurality of

430, be connected with

410 through a plurality of risings axle 420.Therefore, because the eroded area of upper mounting

210, can every group of independent unit area of separate compensation.The advantage of replenishing compression system is and can only exerts pressure to the unit area of specific group when being necessary to apply additonal pressure.

Figure 14 is the planimetric map that replenishes compression system according to another example of the present invention.Among Figure 14, additional compression system can be used and the consistent form of sealant part, exerts pressure to the part that is coated with sealant of multi-form different substrate model.For example, can realize different sealing agent coating multi-form consistent selection projection partly by pressing

410 being divided into a plurality of and optionally start these pieces by each

430 and the

420 that raises with the different substrate model.

Figure 15 is the perspective exploded view of replenishing compression system according to another example of the present invention.Among Figure 15, additional compression system can comprise the

600 of exerting pressure, and it can be used for upper mounting

210 or

220, and

610 is from requiring to apply more each part projection of high pressure than other parts.Therefore, after finishing adhesion process, can apply to upper mounting

210 and exert

600 and do not remove bonding back first and

510 and 520.In addition, can apply the

600 of exerting pressure, wherein, bonding back first and

510 and 520 can be placed on the top of the

600 of exerting pressure, apply the pressure of repetition once more to special part to

220.

The

600 of exerting pressure can comprise the system that covers whole upper mounting

210 that do not require.In this case, can be along the whole basal surface of upper mounting

210, promptly form a plurality of coupling connection groove (not shown), the projection with height of requirement can be inserted a plurality of couplings that can require in the stressed difference of heavy dressing and join in one of grooves with

220 facing surfaces.

Figure 16 is according to the present invention, the sectional view of another the additional compression system before bonding program.Among Figure 16, can be attached on the upper mounting

210 with fixed

620

600 of will exerting pressure, the

600 that is used to prevent to exert pressure drops out upper mounting

210 during the adhesion process to first and

510 and 520.Fixed

620 can comprise:

621 is formed on exert

600 or the upper mounting

210; (catch) 622 that catch is formed on another of exert

600 and upper mounting plate 210.Perhaps, can be fixed on the upper mounting

210, as shown in figure 18 with screw 624

600 of will exerting pressure.

The

600 of exerting pressure according to the present invention can be not limited to separate so that the system that cooperates with upper mounting

210 with upper mounting plate 210.For example, the

600 of exerting pressure can for good and all join with upper mounting

210 couplings, makes and can not remove the

600 of exerting pressure during the vacuum bonding process.Therefore, the

600 of exerting pressure can comprise the structure that allows vacuum suction or Electrostatic Absorption, and the

510 of winning can be loaded on the upper mounting

210.

Figure 17 is according to the present invention, replenishes the sectional view of compression system during bonding program.Among Figure 17,, in the time of perhaps can requiring the entire portion of bonding back first and

510 and 520, can the

600 of exerting pressure according to the present invention be attached on the upper mounting

210 with the fixed system (not shown) when exerting pressure to special part.When the

600 of exerting pressure is attached on the upper mounting

210, can make the

312 of main compression system can move the

311 that is connected with upper mounting

210 in a downward direction.Therefore, the

600 of exerting pressure can be pressed downwardly onto on first and

510 and 520 of bonding back again.Like this, with the special part of bonding back first and

510 and 520, that is, sealant coating part is compared, and the

610 of the

600 of exerting pressure can be to lower process, with bonding special part tightly.

Below, when finishing additional exerting pressure, can drive the

312 of main compression system once more, mobile in the upward direction upper mounting plate 210.Therefore, in case upper mounting

210 moves fully in the upward direction, just can be with the mechanical arm (not shown) from the bonding back of

100 unloadings first and

510 and 520, a pair of first and second substrates that can be bonding are loaded on the

100, to repeat adhesion process and additional exerting pressure.

The

600 of exerting pressure according to the present invention also can provide the compensating operation that departs to the special part place generation of upper and

210 and 220.For example, when the special part of worn and torn upper and

210 and 220, the

600 of exerting pressure can comprise the jut 310 at the special part place that is positioned at upper and

210 and 220, thereby compensates departing from that the wear branch of upper and

210 and 220 causes.

1, a kind of being used for is characterized in that the additional compression system of first and second base plate bondings binding appts together, comprising:

The removable mask of exerting pressure has a plurality of juts to the sealant region projection of first or second substrate.

2, system according to claim 1 is characterized in that, the removable mask adhesion of exerting pressure is on the upper mounting plate or lower platform of binding appts.

3, system according to claim 2 is characterized in that, the removable mask of exerting pressure comprises and the hook that is formed on the engagement of catching in the upper and lower platform.

4, system according to claim 2 is characterized in that, the removable mask of exerting pressure comprise be formed on upper and lower platform in the fixed orifice aimed at of attachment hole.