CN100462818C - Manufacturing method of LCD - Google Patents
Manufacturing method of LCD Download PDFInfo
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- CN100462818C CN100462818C CNB2006101386476A CN200610138647A CN100462818C CN 100462818 C CN100462818 C CN 100462818C CN B2006101386476 A CNB2006101386476 A CN B2006101386476A CN 200610138647 A CN200610138647 A CN 200610138647A CN 100462818 C CN100462818 C CN 100462818C
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- liquid crystal
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- lcd
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Abstract
This invention disclosed a method to produce LCD, which include supply baseplate, on the baseplate eliminate high wettability tropism film; and drip liquid crystal isometry onto the tropism film.
Description
This application be the application number submitted on Dec 27th, 2002 be 02159866.5 and denomination of invention be the dividing an application of the patented claim of " manufacture method of control liquid crystal assigned unit and LCD ", quote its full content as a reference at this.
Technical field
The present invention relates to a kind of LCD (LCD), be specifically related to control the method that liquid crystal distributes, it can make liquid crystal distribute in the dispenser method process to greatest extent and open, and the invention still further relates to the manufacture method of LCD.
Background technology
Development along with the socialization of information, demand to the various forms display constantly increases, in recent years in order to satisfy these requirements, various flat display boards have been developed, for example LCD (LCD), plasma display panel (Plasma Display Panel, PDP), electroluminescent display (Electro LuminescentDisplay, ELD, vacuum fluorescent display (VacuumFluorescent Display, VFD) or the like, some of them are as the display in the various device.
In various flat-panel screens, LCD is used widely as light display, simultaneously LCD because its good picture performance, in light weight, size thin and these feature and advantage of low energy consumption replaced cathode-ray tube (CRT) (Cathode Ray Tube, CRT).Except the lightweight LCD of notebook computer monitor and so on, LCD is to receiving the also televisor and the computer monitor development of display of broadcast signal.
LCD is provided with two opposing substrates, and injection (inject) has liquid crystal between these two opposing substrates, and they are along with temperature and density change state.
Liquid crystal is the material with middle character of liquid and solid, and it has the flowability of liquid and the solid systematicness of wide region.That is to say that liquid crystal is that crystalline solid is fused into the preceding crystalline solid of liquid and the intermediate state of liquid.In case power on or add magnetic field for liquid crystal adds glazing or adds, will show the optical anisotropy peculiar birefringence of (optical anisotropic) crystal (birefringence), in certain temperature range, can show the character of liquid and crystalline solid.
Aforementioned LCD can handle and make by the processing of enforcement array, blocking processing, modularization on glass substrate.
In array is handled, can make wiring graph (wiring patterns) or the switchgear of thin film transistor (TFT) and so on (situation of active matrix type) for example.In blocking is handled, carry out orientation process, isolation processing or inject liquid crystal sealing then to the glass substrate of opposed (opposite).In modularization is handled, installation of driver integrated circuit (IC) and background light source (backlight).
LCD ejection (injection) method during following brief description blocking is handled.
Big template at first is provided, and it is by sealant, will comprise a plurality of TFT cell substrates zone and comprise a plurality of color-filter unit substrate regions in conjunction with and be fixed together and make.
TFT cell substrate zone be provided with many grid lines that extend in a certain direction with fixed intervals, many with fixed intervals along the data line that extends perpendicular to the direction of grid line and a plurality of thin film transistor (TFT)s and the pixel capacitors that on the pixel area matrix of grid line and data line qualification, are provided with, they form in array treating process respectively.
The color-filter unit substrate regions is provided with the black matrix layer that is used to protect part except that pixel area, color-filter layer and public electrode etc.
Big template is cut into polylith LCD cell board.Then, liquid crystal and polylith LCD cell board are placed vacuum chamber, will be dipped in the liquid crystal by the injection orifice that sealant forms.Then, by vacuum chamber is returned to atmospheric pressure state, thereby liquid crystal is injected in the middle of the LCD cell board.This liquid crystal injection method is called as vacuum impregnation (vacuuminjection method), later on explanation more at large.
With reference to Fig. 1, liquid crystal is charged into (fill) container 30, they are placed in the chamber 20.Implement degassing processing then, wherein chamber 20 is maintained the moisture that to remove in the liquid crystal or attached to the vacuum state of moisture on the chamber inner wall and the minute bubbles in the liquid crystal.
Then,, import nitrogen N 2, with so that chamber pressure becomes atmospheric pressure from vacuum to chamber 20 with the liquid crystal filling orifice dispenser method of LCD cell board 40 or after making it and liquid crystal contacting.Then, utilize the pressure reduction between LCD cell board 40 inner wall pressures and the chamber pressure liquid crystal to be injected the LCD cell board by filling orifice.
When liquid crystal 25 is full of LCD cell board 40, in filling orifice sealing back cleaning LCD cell board.
Owing to cutting LCD cell board, under vacuum state, keep space between the two substrates, be instilled into the LCD cell board in the liquid crystal or the LCD cell board is contacted with liquid crystal and cause liquid crystal injection needs for a long time, so the throughput rate of foregoing liquid crystal injection method is very low.In addition, when making large LCD, owing to fully liquid crystal is not injected the LCD cell board, this can produce defective LCD.
Recently in order to solve foregoing problems, following liquid crystal drip-injection method (dropping finally has been born
method)。The method of liquid crystal drip-injection manufactured LCD has been used in explanation with reference to the accompanying drawings.
With reference to Fig. 2, oriented material is coated on first substrate with TFT unit substrate zone and has on second substrate of color-filter unit substrate regions.Then, implementation orientation processing procedure like this: make liquid crystal molecule have directivity (1S), and clean first and second substrates (2S).
Second substrate after the cleaning is loaded on the coating apparatus for sealant, is the periphery coating sealant (3S) in each plate zone.Can adopt light solidity, thermoset resin as sealant, and not need the liquid crystal filling orifice.
On the other hand, first substrate is loaded on liquid crystal (LC) divider (dispenser), to the active array zone of each plate dispenser method (6S).In this case, first and second substrates after the cleaning can be loaded on silver (Ag) divider, on the common electric voltage pipeline of first substrate, form the Ag point, perhaps under InPlane Switching (IPS) pattern, can omit and form the Ag point.
Present brief description liquid crystal drip-injection method.
With reference to Fig. 3, first substrate 60 is loaded on the platform 70 of liquid crystal dispensing apparatus 50.The thrower (syringe) 80 of filling liquid crystal is arranged, in order to dispenser method above first substrate 60.
Generally speaking, liquid crystal 65 is instilled on the substrate 60 with the drop form.Substrate 60 moves with constant speed and direction, and the liquid crystal 65 that thrower 80 is complementary to its discharging (discharge), so set the liquid crystal drip-injection position.
Although not shown in the accompanying drawings, thrower 80 has coupled extraneous gas passage, in order to from external air source the supply of nitrogen N2, so that exert pressure to liquid crystal, thereby makes the liquid crystal drippage.
Below with reference to figure, first and second substrates are loaded into carry out combination in the vacuum binding cavity, so that the liquid crystal of instillation is inserted in the plate equably, sealant (7S) is set, so finished the manufacturing of big template.
Then, Scribe/Break (S/B) processing procedure (9S) of ruling/split, this processing comprises scratching process and the process of splitting, in described scratching process, the diamond pen that utilizes hardness to be higher than glass hard (HRC65 forms line of cut at glass surface, in the process of splitting, applies certain power to glass, make glass breakage, thus big template is cut into the LCD cell board of polylith liquid crystal cell.
Then, after carried out polishing in the surface of LCD cell board (10S), the LCD cell board is carried out Auto/Probe (A/P) check (11S), finish the liquid crystal cell process thus.
In the A/P checking process, employing has the electrical defects of the device check LCD cell board of the voltage terminal that can apply voltage, that is to say, grid line and data line in voltage terminal and the LCD cell board on the TFT substrate are electrically connected, the cell gap defective or the defective liquid crystal that are used in the detecting unit plate inject (bad injection is perhaps leaked).
Although not shown in the accompanying drawing, after in a single day having finished the liquid crystal cell manufacture process, just begin the module manufacture process, mounting driver IC or background light source in this process by aforementioned a series of manufacturing courses.
But there is following problem in the LCD manufacture method of the liquid crystal drip-injection method of using in the above-mentioned prior art.
In cohesive process, arrange first and second substrates toward each other, be the environment exhaust, be assigned on the substrate surface until liquid crystal, arrive peripheral sealant part, thus with two base plate bondings.
Specifically, with reference to Fig. 4, liquid crystal is dropped onto on first substrate 60 according to the form of fixed intervals with drop.There is following relation in the distance that adjacent lcd drips between 65:
dZ＝d4＝d6＝ds>d1＝d3＝d5＝d7。
Below, with reference to Fig. 5, first and second substrate junction being lumped together in the process, the liquid crystal 65 of drippage always comes in distribution with circular form 65A on substrate surface lentamente.Before scattering, the liquid crystal bending formed the gap 67 of also not inserting liquid crystal.Therefore, in conjunction with first and second substrates time, continue exhaust, become enough little until gap 67 for environment.
But 67 become and will spend 20 minutes in enough hour and just can be enough to finish liquid crystal and distribute up to the gap.The danger that this can exist sealant to peel off because there is pressure reduction in the inboard and the outside of substrate in this wait process, thereby can cause that liquid crystal leaks.
Although not shown, spot can appear at the boundary of dispenser method, and this will make picture quality degradation.
Summary of the invention
So, the present invention relates to control the manufacture method of liquid crystal assigned unit and LCD, it has been avoided basically because the restriction of prior art and one or more problems that shortcoming causes.
Advantage of the present invention provides the manufacture method of the device and the LCD of Control Allocation, and it can dwindle the liquid crystal gap effectively.
In the instructions other advantage of the present invention is illustrated below, can be made by instructions to become obvious partially, can acquire a part by practice.Purpose of the present invention and other advantage can realize by the structure of pointing out in concrete written description and claim and the accompanying drawing or obtain.
As wherein the embodiment of institute is described, in order to realize these and other advantage of the present invention,, provide the manufacture method of a kind of LCD according to purpose of the present invention, it comprises: first substrate (a) is provided; (b) on first substrate, form oriented film with wetting state; And (c) with constant spacing dispenser method on the oriented film, d) before first substrate and the combination of second substrate, liquid crystal drop is zero according to the wetting state of oriented film self being distributed in first distance adjacent one another are at first direction on the oriented film and between the liquid crystal drop adjacent one another are perpendicular to the second direction of first direction under the situation that does not have external force basically, and the second distance between the third direction that is being different from first direction and second direction on oriented film liquid crystal drop adjacent one another are is greater than first distance; And e) after liquid crystal drop distributes, in conjunction with first substrate and second substrate.
Be understandable that aforementioned summary is described and following detailed all is exemplary and illustrative, it attempts to provide further specifying the described wood invention of claim.
Accompanying drawing is further understood the present invention, and in conjunction with a part that constitutes this instructions, it shows embodiments of the invention with it, and is used from explanation principle of the present invention together with explanation one:
Description of drawings
In the accompanying drawing:
Fig. 1 is in order to explain the skeleton view of vacuum impregnation in the prior art;
Fig. 2 is the process flow diagram that is used for explaining prior art instillation injection method;
Fig. 3 is the skeleton view that is used for explaining prior art liquid crystal drip-injection method;
Fig. 4 is the state behind the liquid crystal drip-injection in the prior art;
Fig. 5 is the state after cohesive process in the prior art;
Fig. 6 is used to explain the process flow diagram of having used according to the LCD manufacture method of the instillation injection method of the embodiment of the invention;
Fig. 7 is the skeleton view that is used to explain according to the liquid crystal drip-injection method of the embodiment of the invention;
Fig. 8 is the state behind the liquid crystal drip-injection; And
Fig. 9 is according to the state behind another embodiment of the present invention liquid crystal drip-injection.
Embodiment
Now embodiments of the invention are carried out detailed reference, its example is shown in the drawings.
Fig. 6 represents to be used to explain the process flow diagram of having used according to the LCD manufacture method of the instillation injection method of the embodiment of the invention.Fig. 7 represents to be used to explain the skeleton view according to the liquid crystal drip-injection method of the embodiment of the invention.Fig. 8 represents the state behind the liquid crystal drip-injection.
Although not shown, the invention provides and passed through first and second substrates that array is handled and color filter is handled.First and second substrates comprise a plurality of thin film transistor (TFT)s (TFT) cell substrate zone and color-filter unit substrate regions respectively, after having finished array process and color filter process, first substrate and second substrate are loaded into respectively in first chest and second chest.
Utilize conveyer that first chest and second chest are installed on the shovel loader of liquid crystal cells production line.TFT cell substrate zone comprises many grid line, many data line and a plurality of thin film transistor (TFT) and the pixel capacitors that form that extend with fixed intervals perpendicular to the direction of grid line on the edge of extending along a certain direction with fixed intervals on the pixel area matrix of grid line and data line qualification.
The color-filter unit substrate comprises black matrix layer, and it is used to protect except that the public electrode of pixel area, three primary colors color-filter layer and driving liquid crystal, together with the parts pixel capacitors or the like.
The manufacture process of liquid crystal cells under the above-mentioned condition of explained later.
With reference to Fig. 6, utilize the robots arm to select to install to first substrate on first chest and install to second substrate that is complementary with first substrate on second chest, and they are installed on the orientation process line, wherein said robots arm can understand the information (not shown) of first and second chests of installing in the shovel loader.
In order to remove foreign matter and particle from first and second substrates, carry out orientation process according to the order that cleans (20S) before the coating oriented film: apply oriented film (21S), bake oriented film (22S), check (23S) and friction (24S), below they are carried out brief description.
The orientation liquid state that will be used for applying oriented film (21S) is instilled between the glue spreader and anilox roller that divider rotates.Orientation liquid adheres to and remains on anilox roller surface and is called fluid film, has adhered to above transferring to then on the printing roller of rubber slab.Then, when first and second substrates on being fixed to platform for coating advanced, the orientation fluid film just shifted and is coated on first and second substrates.
Then,, implement to bake process (22S), oriented film is checked (23S), rub then (24S), thereby the orientation process of finishing in order to evaporate the solvent in the oriented film of printing on first and second substrates.
After orientation process is finished, implement the gap process according to following mode.
After first and second substrates of having finished orientation process are cleaned (25S), first substrate is loaded on the liquid distributor, it then is on the coating apparatus for sealant that second substrate is loaded into silver (Ag) divider.
At this moment, be to apply Ag point (27S) on second substrate with being electrically connected of public electrode, apply the sealant (28S) that does not have the liquid crystal filling orifice in the periphery in each cell board zone.Sealant is light, thermosetting resin or thermoset resin.
On the other hand, with liquid crystal drip-injection (26S) to the TFT cell substrate zone of first substrate, on this zone and second substrate in the color-filter unit substrate interior zone of sealant relative, this will illustrate below.
With reference to Fig. 7, along with substrate 100 being loaded on the platform 700 of liquid crystal dispensing apparatus 500, just liquid crystal thrower 800 is arranged on platform 700 tops, by syringe 800 liquid crystal 110 is instilled on the substrate 100.
There is adjustable temperature control to make 700a in the platform 700, in order to the distribution of control liquid crystal.Adjustable temperature control device 700a preferably is made of heating wires, and it is by being electrically connected heating, in order to the surface temperature of control platform 700.
The form of liquid crystal 110 with drop is instilled on the substrate 100.Under this situation, control adjustable temperature control device 700a like this: in about 30 ℃ to 120 ℃ scope, so that guarantee the distance of adjacent lcd between dripping for minimum, this will be described in detail later with the surface temperature control of platform 700.
With reference to Fig. 7 and 8, with constant spacing with liquid crystal drip-injection to the substrate 100 that is positioned at platform 700.Adjustable temperature control device 700a on the control platform 700 changes its temperature, so that make the distance that adjacent lcd drips between 110 have following relation: d2=d4=d6=d8〉d1=d3=d5=d7, and make distance reach minimum.D1=d3=d5=d7 can be zero, and this is to the effect that spot suppresses occurring at the liquid crystal drop boundary in the prior art.
That is to say that when the high viscosity liquid crystal dropped onto on the substrate 100 that is positioned on the platform 700 from thrower 800, because the surface temperature effect, liquid crystal drop distributed with circular form.
Although not shown, in thrower, be inserted with nozzle needle, the one end contacts with the contact portion of needle plate, wherein when the spring on the nozzle needle makes pin contact with needle plate, can stop the discharging of liquid crystal.
Then, a solenoid device is arranged at the nozzle needle top.If provide electric power to spiral coil, it can produce electromagnetic energy, and this will make nozzle needle move up.From external air source the supply of nitrogen N2, it can pressurize to liquid crystal, makes the liquid crystal drippage.
Then, when stopping to coil supply electric power, nozzle needle is owing to the elastic force of spring is got back to the original position.Moving up and down of this nozzle needle can be discharged liquid crystal.
Then, with reference to Fig. 6, when first and second substrates being carried out in conjunction with (30S), the liquid crystal of drippage is distributed on the substrate with circular form.Therefore under this situation, owing to do not have alkalescence between the liquid crystal, it is fully reduced in the liquid crystal drip-injection process, will significantly reduce to discharge environmental gas and in conjunction with the required time of substrate.
Carry out cohesive process in such a way.
Although not shown, first substrate is installed in can the worktable that along continuous straight runs moves in vacuum chamber on, by the whole basal surface of the first adsorber vacuum suction, second substrate.Then, adsorb the whole basal surface of second substrate, close vacuum chamber, the beginning exhaust by second adsorber.Allow second adsorber, vertically move down, have predetermined gap until first and second, the worktable along continuous straight runs that first substrate has been installed above making moves, and aligns until first and second substrates.
Then, second adsorber is vertically moved down,, exert pressure,, formed big template thus so that make the thickness that the liquid crystal of instillation is filled into to be needed to first and second substrates so that utilize sealant that second substrate and first is combined.
In vacuum chamber, take out big template,, make sealant cures (31S), thereby finished the gap process with ultraviolet ray (UV) irradiation sealant.Under this situation, can before the substrate after the unloading combination, implement the liquid crystal assigning process, distribute so that make in conjunction with the super sealant of the liquid crystal in the substrate.Under atmospheric pressure or vacuum state, the time of implementing the liquid crystal assigning process is approximately above 10 minutes.
Then,, TFT substrate and filter substrate are sticked together, they are loaded on the streamline to carry out checking process along with the gap process finishes.
Checking process comprises: scratching process, and its diamond pen that utilizes hardness to be higher than glass hard (HRC65 forms line of cut on glass surface; Make glass breakage, be used for the substrate cut that vacuum-junction gets togather is become the liquid crystal cells plate of polylith liquid crystal cell; And the surface of liquid crystal cells plate polished, check each piece plate, finish the manufacture process of liquid crystal cells thus.
Inspection comprises: visual examination, in order to check the state of orientation of liquid crystal, Anto/Probe (A/P) checks, in order to check flaw point (defectiveblots) and electric switch state.With the naked eye or the electric charge lotus root attach together the solid-state image device of putting (CCD) and so on and can automatically detect flaw point (defectiveblots).
In case finished the liquid crystal cells manufacture process by the aforementioned process sequence, just can implement the module process of mounting driver IC or installation background light source etc.
Although the surface temperature that is provided with the platform of adjustable temperature control device by control in the previous embodiment is come the distance between the liquid crystal drop on the control basal plate, but can also in orientation process, control the performance of the oriented film that forms on the platform, in order to dwindle the distance between the liquid crystal drop to greatest extent.
That is to say, with reference to Fig. 9, as the oriented film 120 that applies in the orientation step among Fig. 6, can use and have and the good wettability of high surface energy and the oriented film of excellent hydrophilic, with so that liquid crystal drop 110. is realized good the distribution on the surface of oriented film 120, the contact angle θ between liquid crystal 110 and the oriented film 120 is littler as a result.
Contact angle θ is the angle that liquid forms when being in thermodynamic equilibrium on solid surface.Under this situation, owing to the high wettability and the good hydrophilicity of oriented film makes liquid crystal drop 110 tend to contact with the film of oriented film 120, so contact angle θ is very little, and liquid crystal drop is in the contact condition with it.
Therefore, by dwindling the surface energy between liquid crystal drop 110 and the oriented film 120 to greatest extent,
Can reduce adjacent lcd to greatest extent and drip distance between 110, also just foot can be done the non-existent gap of liquid crystal very little.That is to say, oriented film can have the oriented film of high wettability by formation, thereby provide the effect that suppresses to occur on the liquid crystal drop border in the prior art spot, it provides adjacent lcd to drip distance relation between 110: d2=d4=d6=d8〉d1=d3=d5=d7, having dwindled to greatest extent simultaneously should distance.D1=d3=d5=d7 can be zero.
As what illustrated, control liquid crystal assigned unit of the present invention and LCD manufacture method have the following advantages:
At first, the platform by employing has the heating wires that can change surface temperature perhaps passes through at substrate Upper formation has good wetability and hydrophilic orientation film, can dwindle to greatest extent adjacent lcd and drip Between distance, this will cause and can will wherein not exist the gap of liquid crystal to do enough littlely.
The second, shorten compacting and required in conjunction with two substrates by environment being vacuumized to eliminate the gap Time can avoid in waiting in conjunction with the process of two substrates since two substrates inside and outside it Between the pressure reduction that exists and the sealant that causes peels off and the liquid crystal leakage problem.
The 3rd, have the platform of heating wires or have the hydrophilic orientation film of good wetability and help Drop onto the distribution of the viscosity liquid crystal on the substrate, and can shorten the processing time.
The 4th, be suppressed at the liquid crystal drop boundary and spot (blots) occur and can improve image quality. To ability The territory those of ordinary skill it is evident that, in the situation that does not break away from the spirit or scope of the present invention, Can distribute control device and LCD manufacture method to make various improvement and variation to liquid crystal of the present invention. So, The intention be if to modifications and variations of the present invention in claims scope and equivalent scope thereof, this Invention has covered these modifications and variations.
Claims (12)
1. the manufacture method of a LCD, it comprises:
First substrate is provided;
On first substrate, form oriented film with wetting state;
With constant spacing with liquid crystal drip-injection to oriented film;
Before first substrate and the combination of second substrate, liquid crystal drop is zero according to the wetting state of oriented film self being distributed in first distance adjacent one another are at first direction on the oriented film and between the liquid crystal drop adjacent one another are perpendicular to the second direction of first direction under the situation that does not have external force basically, and the second distance between the third direction that is being different from first direction and second direction on oriented film liquid crystal drop adjacent one another are is greater than first distance; And
After liquid crystal drop distributes, in conjunction with first substrate and second substrate.
2. method according to claim 1, wherein oriented film has surface energy, is reduced to minimum in order to the distance between adjacent lcd is dripped.
3. method according to claim 1, it cleans first substrate before further being included in and forming oriented film.
4. method according to claim 1, it bakes oriented film before further being included in dispenser method.
5. method according to claim 4, it further comprises the inspection oriented film.
6. method according to claim 5, it further comprises oriented film is rubbed.
7. method according to claim 1 wherein is loaded into first substrate on the liquid crystal dispensing apparatus, is loaded into second substrate on the silver-colored divider then and then is loaded on the coating apparatus for sealant.
8. method according to claim 7, it further is included on described second substrate and applies sealant.
9. method according to claim 8, wherein sealant uses a kind of smooth solidity or thermoset resin.
10. method according to claim 1, it further comprises the control temperature so that the control liquid crystal distributes.
11. method according to claim 10 wherein is controlled at temperature in 30 ℃-120 ℃ the scope.
12. method according to claim 11 is wherein controlled temperature and is dwindled the distance of adjacent lcd between dripping to greatest extent.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20020012489 | 2002-03-08 | ||
| KRP200212489 | 2002-03-08 | ||
| KRP200213565 | 2002-03-13 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021598665A Division CN100478765C (en) | 2002-03-08 | 2002-12-27 | Method for controlling liquid crystal display |
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| Publication Number | Publication Date |
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| CN1963641A CN1963641A (en) | 2007-05-16 |
| CN100462818C true CN100462818C (en) | 2009-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006101386476A Expired - Fee Related CN100462818C (en) | 2002-03-08 | 2002-12-27 | Manufacturing method of LCD |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5244366B2 (en) * | 2007-10-30 | 2013-07-24 | 武蔵エンジニアリング株式会社 | Liquid material dripping method, program and apparatus |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4691995A (en) * | 1985-07-15 | 1987-09-08 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal filling device |
| US5523128A (en) * | 1993-09-28 | 1996-06-04 | Sharp Kabushiki Kaisha | Liquid crystal display device |
| US5796458A (en) * | 1992-09-01 | 1998-08-18 | Fujitsu Limited | Element division liquid crystal display device and its manufacturing method |
| US5828435A (en) * | 1995-09-21 | 1998-10-27 | Samsung Electronics Co., Ltd. | Method for fabricating a liquid crystal cell comprises forming a seal member after aligning the substrates |
| JP2001222017A (en) * | 1999-05-24 | 2001-08-17 | Fujitsu Ltd | Liquid crystal display device and its manufacturing method |
-
2002
- 2002-12-27 CN CNB2006101386476A patent/CN100462818C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4691995A (en) * | 1985-07-15 | 1987-09-08 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal filling device |
| US5796458A (en) * | 1992-09-01 | 1998-08-18 | Fujitsu Limited | Element division liquid crystal display device and its manufacturing method |
| US5523128A (en) * | 1993-09-28 | 1996-06-04 | Sharp Kabushiki Kaisha | Liquid crystal display device |
| US5828435A (en) * | 1995-09-21 | 1998-10-27 | Samsung Electronics Co., Ltd. | Method for fabricating a liquid crystal cell comprises forming a seal member after aligning the substrates |
| JP2001222017A (en) * | 1999-05-24 | 2001-08-17 | Fujitsu Ltd | Liquid crystal display device and its manufacturing method |
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| CN1963641A (en) | 2007-05-16 |
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