CN101030001A - Liquid crystal display device and manufacturing method thereof - Google Patents
Liquid crystal display device and manufacturing method thereof Download PDFInfo
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- CN101030001A CN101030001A CN 200610108783 CN200610108783A CN101030001A CN 101030001 A CN101030001 A CN 101030001A CN 200610108783 CN200610108783 CN 200610108783 CN 200610108783 A CN200610108783 A CN 200610108783A CN 101030001 A CN101030001 A CN 101030001A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 126
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 239000000758 substrate Substances 0.000 claims abstract description 117
- 239000000463 material Substances 0.000 claims abstract description 46
- 238000005516 engineering process Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims description 25
- 230000035515 penetration Effects 0.000 claims description 19
- 230000015572 biosynthetic process Effects 0.000 claims description 16
- 238000003854 Surface Print Methods 0.000 claims description 9
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- 238000007641 inkjet printing Methods 0.000 claims description 8
- 238000004381 surface treatment Methods 0.000 claims description 8
- 235000012000 cholesterol Nutrition 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
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- 238000003825 pressing Methods 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 2
- 238000007639 printing Methods 0.000 claims description 2
- 230000011218 segmentation Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
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- 238000002360 preparation method Methods 0.000 description 5
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- 230000003287 optical effect Effects 0.000 description 3
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- 239000012141 concentrate Substances 0.000 description 1
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Abstract
本发明公开了一种液晶显示装置及其制造方法，其利用不同类型的配向材料填充于第一基板或第二基板上以形成配向膜，而当液晶接触了所述基板上所述配向膜，便形成多域分割液晶。液晶显示装置包括：第一基板、第二基板、第一配向膜、第二配向膜及液晶层。本发明克服了公知液晶显示装置在多域分割技术上的制造较复杂及成本较高的缺陷。
The present invention discloses a liquid crystal display device and a manufacturing method thereof, wherein different types of alignment materials are filled on a first substrate or a second substrate to form an alignment film, and when the liquid crystal contacts the alignment film on the substrate, a multi-domain segmented liquid crystal is formed. The liquid crystal display device comprises: a first substrate, a second substrate, a first alignment film, a second alignment film and a liquid crystal layer. The present invention overcomes the defects of the conventional liquid crystal display device in that the manufacturing of the multi-domain segmentation technology is more complicated and the cost is higher.
Description
Technical field
The present invention relates to a kind of Liquid crystal disply device and its preparation method, especially refer to utilize dissimilar alignment materials to be filled on first substrate or second substrate to form alignment film, contacted the above alignment film of substrate and work as liquid crystal, just formed multiple domain and cut apart liquid crystal (multi-domain liquid crystal).
Background technology
The multiple domain of control Liquid Crystal Molecules Alignment cuts apart that (multi-domain, mode MD) is often applied to LCD.For example, manufacture and design semi-reflection and semi-transparent technical, on the problem that solves the LCD wide viewing angle and enlarge the reflecting spectrum of cholesterol liquid crystal and visual angle etc.
Cut apart mesomorphic state for reaching multiple domain, mode at present commonly used makes liquid crystal molecule reach the state that multiple domain is cut apart for utilizing expose to the sun photograph (lightexposure), rat (protrusion) or non-uniform electric field technology such as (field) of light.
At first introduce and utilize the light photograph technology of exposing to the sun to finish MD and reach the effect of semi-reflection and semi-transparent.Please refer to Fig. 1 and Fig. 2, be No. 2004/0032555, No. 6,862,065, United States Patent (USP) notification number and U.S. Patent Publication No..Known liquid crystal indicator 10 has first substrate and second substrate, second substrate has reflector space and penetration region, by mask and ultraviolet light, and the tilt angle that makes the liquid crystal molecule on the reflector space is different from the liquid crystal molecule of penetration region, reaches the required best optical effect of semi-reflection and semi-transparent.Similarly, though known liquid crystal indicator 20 is different on the structural design of reflector space and penetration region with liquid crystal indicator 10, all uses mask and ultraviolet light to be radiated at equally and make liquid crystal reach MD on the alignment film.
Then introduction utilizes the rat technology to finish the MD state and reaches wide-visual angle effect.Please refer to Fig. 3.Known liquid crystal indicator 30 utilizes the rat thing to control the pre-dumping direction of liquid crystal arrangement automatically, can make the design of cutting apart more, form the pre-dumping effect as doing projection (bump), select the dielectric coefficient of the dielectric coefficient of projection material for use, help to form MD less than liquid crystal at two plate bases up and down.
Introduce fringe field (fringe field) effect at last, and reach wide-visual angle effect in conjunction with projection and pixel capacitors.Please refer to Fig. 4.Known liquid crystal indicator 40 is done the Y-Y projection cube structure in upper substrate, forms the structure of approximate two Region Segmentation (2 domain).When supply voltage, the just orientation of may command liquid crystal, and reach MD.And in follow-up improvement, be the pre-dumping direction that drives liquid crystal in the fringe field mode, simplify to make forming MD.
Therefore, as from the foregoing, above-mentioned known liquid crystal indicator obviously has inconvenience and disappearance to exist in cost and manufacturing, and can be improved.Use up in the photograph technology of exposing to the sun making, just need additionally to increase the flow process of mask and ultraviolet light irradiation, and be difficult for using on the manufacturing process of large-scale liquid crystal indicator; Also need to increase manufacturing step and use in the rat technology, and need accurate control in the formation of rat thing; In using the electric field driven technology, need to increase the manufacturing of electrode equally at last, and the downwards angle of visibility improvement is limited and driving voltage is also bigger it on.
Therefore, the improving of the above-mentioned disappearance of inventor's thoughts is that the spy concentrates on studies and cooperates the utilization of scientific principle, proposes a kind of reasonable in design and effectively improve the present invention of above-mentioned disappearance finally.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of Liquid crystal disply device and its preparation method, to solve the manufacturing of known liquid crystal indicator on the multiple domain cutting techniques than complexity and cost problem of higher.
For this reason, the present invention at first proposes a kind of liquid crystal indicator, and it comprises:
First substrate
Cover first alignment film on first substrate, first alignment film comprises:
The first orientation zone that comprises first alignment materials, and
The second orientation zone that comprises second alignment materials, the second orientation zone that can provide the orientation angle to be different from the orientation angle that the first orientation zone provides, haply with coplanar second orientation zone, first orientation zone, and
Cover the liquid crystal layer and first alignment film on first substrate.
Further comprise and cover second substrate that has on first substrate that is arranged in first substrate and the second substrate gap liquid crystal layer.
First orientation zone and the second orientation zone can provide two liquid crystal regions in the liquid crystal layer, and two have the liquid crystal region that different alignment is arranged.
The first orientation zone provides the reflector space of a liquid crystal layer.
The second orientation zone provides the penetration region of a liquid crystal layer.
Further comprise second alignment film that is positioned between second substrate and liquid crystal layer.
Liquid crystal layer comprises a cholesterol liquid crystal at least, a nematic crystal and a disc-like liquid crystal.
Separate first orientation zone or the second orientation zone to intercept wall, or one of them or both of surface treatment first orientation zone and second orientation zone at least.
Wherein at least one is an ink jet printing zone for first orientation zone and the second orientation zone, surface printing processing region, imprinting area.
A kind of method of making LCD device comprises:
First substrate is provided;
Formation covers first alignment film on first substrate, comprising:
Formation comprises the first orientation zone of first alignment materials, and
Formation comprises the second orientation zone of second alignment materials, the second orientation zone that can provide the orientation angle to be different from the orientation angle that the first orientation zone provides, and in fact with coplanar second orientation zone, first orientation zone, and
The liquid crystal layer and first alignment film that cover on first substrate are provided.
Form first alignment film and comprise that a formation has the surface treatment first and second orientation zones, directly form the first and second orientation zones, and separate the first orientation zone from second orientation zone with an obstruct wall.
Use a photoetching, printing, coating, pressing mold and photopolymerization technology.
Form the obstruct wall by changing the substrate surface feature.
Form first alignment film and comprise with ink-jet, surface printing, imprint process form first orientation zone and form the second orientation zone.
Form the first orientation zone and comprise that formation can provide first alignment film of liquid crystal layer reflection.
Form the second orientation zone and comprise that formation can provide second alignment film of a liquid crystal layer penetration region.
Further comprise forming and cover second substrate that has on first substrate that is arranged in first substrate and the second substrate gap liquid crystal layer.
Further comprise and form second alignment film that is positioned between second substrate and liquid crystal layer.
A kind of liquid crystal indicator comprises:
First substrate
Cover first alignment film on first substrate, first alignment film comprises:
The first orientation zone that comprises first alignment materials, and
The second orientation zone that comprises second alignment materials, the second orientation zone that can provide the orientation angle to be different from the orientation angle that the first orientation zone provides,
Cover the liquid crystal layer and first alignment film on first substrate;
Cover second substrate that has on first substrate that is arranged in first substrate and the second substrate gap liquid crystal layer.
First orientation zone can provide two liquid crystal regions with different LCD alignment angles with the second orientation zone.
Further comprise second alignment film that is positioned between second substrate and liquid crystal layer.
The first orientation zone is separated by using obstruct wall or surface treatment and the second orientation zone.
Wherein at least one is an ink jet printing zone for first orientation zone and the second orientation zone, surface printing processing region, imprinting area.
Characteristics of the present invention and advantage are: the Liquid crystal disply device and its preparation method that the present invention proposes, utilize dissimilar alignment materials to be filled on first substrate or second substrate to form alignment film, contacted the above alignment film of described substrate and work as liquid crystal, just formed multiple domain and cut apart liquid crystal.
What deserves to be mentioned is, described alignment film is to be filled on the described substrate with dissimilar alignment materials to be formed, and the material behavior of described alignment materials will make described liquid crystal contact this first alignment film can form the arrangement with different tilt angles with this second alignment film.And after described liquid crystal contacted described alignment film, can become multiple domain and cut apart liquid crystal, wherein this first alignment film or this second alignment film are formed by two or more different alignment materials.Alignment materials with different tilt angles can be the vertical orientation that mixes different proportion and level joins and asks material, according to the difference of blending ratio, can form after being separated and has tilt angle and spend to the orientation effect of 90 degree from 0.
The method that is filled on the described substrate with dissimilar alignment materials can be to form a plurality of obstruct walls to be located on the described substrate, to isolate different alignment material The corresponding area; Or can surface treatment on substrate, form the zone of a plurality of patternings, with corresponding to dissimilar alignment materials; Or can directly insert dissimilar alignment materials corresponding region on substrate.
The arrangement mode that described multiple domain is cut apart liquid crystal can make the present invention be applied to the liquid crystal indicator wide-visual angle effect.In addition, when it is cholesterol liquid crystal when described liquid crystal, and described multiple domain is cut apart the arrangement mode of liquid crystal and will be made this liquid crystal indicator have wide reflecting spectrum and wide-visual angle effect.What is more, can be provided with a plurality of reflection horizon to form a plurality of reflector spaces in this second substrate, the zone that other non-reflection horizon covered then forms a plurality of penetration region, and reflector space and the penetration region of working as this lower floor's both alignment layers are formed by dissimilar alignment materials, for example directly insert vertical alignment materials at the reflector space of substrate, insert the horizontal direction matching material in penetration region, and all insert the horizontal direction matching material at another substrate, then can make described reflector space and described penetration region have multiple domain and cut apart liquid crystal, and become the semi-reflection and semi-transparent liquid crystal indicator.
Description of drawings
Fig. 1 is the cross-sectional view of known liquid crystal indicator first embodiment;
Fig. 2 is the cross-sectional view of known liquid crystal indicator second embodiment;
Fig. 3 is the cross-sectional view of known liquid crystal indicator the 3rd embodiment;
Fig. 4 is the cross-sectional view of known liquid crystal indicator the 4th embodiment;
Fig. 5 A is the cross-sectional view of liquid crystal indicator of the present invention;
Fig. 5 B is another cross-sectional view of liquid crystal indicator of the present invention;
Fig. 6 A is the first enforcement manufacture method of the second substrate alignment film of liquid crystal indicator of the present invention;
Fig. 6 B is the second enforcement manufacture method of the second substrate alignment film of liquid crystal indicator of the present invention;
Fig. 6 C is the 3rd enforcement manufacture method of the second substrate alignment film of liquid crystal indicator of the present invention;
Fig. 7 A is the first enforcement manufacture method of the first substrate alignment film of liquid crystal indicator of the present invention;
Fig. 7 B is the second enforcement manufacture method of the second substrate alignment film of liquid crystal indicator of the present invention; And
Fig. 8 is the manufacturing flow chart of liquid crystal indicator of the present invention.
Main description of reference numerals:
50, liquid crystal indicator
51, first substrate
511, first alignment film
52, second substrate
521, second alignment film
53, liquid crystal layer
54, intercept wall
53a, 53b, 53c and 53d, liquid crystal
R, reflector space
T, penetration region
Embodiment
In order further to understand feature of the present invention and technology contents, please refer to detailed description of the present invention and accompanying drawing, yet accompanying drawing only provides reference and explanation usefulness, is not to be used for the present invention is limited.
Please refer to Fig. 5 A and Fig. 5 B, when using the present invention to be applied to semi-reflection and semi-transparent type LCD, liquid crystal indicator 50 comprises: first substrate 51, second substrate 52, first alignment film 511, second alignment film 521 and liquid crystal layer 53.It places layer on this liquid crystal indicator 50 this first substrate 51, it places layer under this liquid crystal indicator 50 this second substrate 52, this first alignment film 511 places this first substrate, 51 belows, this second alignment film 521 places this second substrate, 52 tops, reach this liquid crystal layer 53 and be formed in first substrate 51 and 52 gaps that constituted of this second substrate, and in this gap, loaded liquid crystal material.Wherein, second substrate 52 is provided with a plurality of reflection horizon to form a plurality of reflector space R, and the zone that other non-reflection horizon covered then forms a plurality of penetration region T.
Up and down any one deck of two both alignment layers (is second alignment film 521 at Fig. 5 A and Fig. 5 B) be by two kinds of alignment materials directly insert and be formed at corresponding 53a and 53d zone, can form arrangement with making in the liquid crystal layer 53 behind the described liquid crystal contact 53a and 53d with different tilt angles.The alignment materials that first alignment film 511 and the second alignment film 53d can same types in Fig. 5 A and Fig. 5 B is filled, and after described liquid crystal contacted described alignment film, can form vertical orientation and other zone formation horizontal direction matchings in the 53a zone, and reach the best optical texture of single liquid crystal gap semi-reflection and semi-transparent type LCD.
Insert the method for dissimilar alignment materials, can be a plurality of obstruct walls 54 are set on described substrate 51 or 52, to isolate different alignment material The corresponding area in first substrate 51 or second substrate 52; The zone that maybe can comprise patterning that surface treatment forms is with corresponding to dissimilar alignment materials; Or can directly insert dissimilar alignment materials corresponding region on substrate.
Again with the example that is applied as of the saturating LCD of Transflective.Please refer to Fig. 6 A, Fig. 6 B and Fig. 6 C.Second alignment film 521 is to be formed on the reflector space R that corresponds to second substrate 52 and on the penetration region T that corresponds to second substrate 52 by the different alignment material, and the mode of inserting of second alignment film 521 of penetration region T and second alignment film 521 of reflector space R can be that alignment materials is finished manufacturing with ink-jetting style.Wherein the hydrophilic and hydrophobic of alignment materials is different separately because of it for reflector space R and penetration region T, so second alignment film 521 is isolated each other between reflector space R and penetration region T; The LCD or second substrate 52 also can comprise a plurality of obstruct wall 54 structures, are located between reflector space R and penetration region T to isolate different alignment materials; Also or, before inserting alignment film 521, can on second substrate 52, carry out patterned surface earlier and handle, insert the different alignment material in ink-jet (ink-jetprinting) mode again and form in the corresponding region.Inserting except ink-jetting style of alignment film, can also surface printing or mode such as impression finished.
Please refer to Fig. 7 A and Fig. 7 B, it is that alignment materials is finished manufacturing in modes such as ink-jet (ink-jet printing), surface printing or impressions equally that first substrate 51 has one first alignment film, 511, the first alignment films 511.
Please refer to Fig. 8 and cooperate Fig. 5 A and Fig. 5 B, the manufacture method of liquid crystal indicator 50 of the present invention comprises the following steps: at first to provide first substrate 51 and second substrate 52 (step 800); Form pattered region then in first substrate 51 or second substrate 52 (step 802), in step 802, can also form a plurality of patternings and intercept walls 54 or in step 802, on substrate 51 or 52, constitute pattered region or step 802 is omissible with surface modification method with photoetching process, pressing mold, coating or photic molecule polymerization methods; Then filling dissimilar alignment materials described pattered region of (step 804) on described substrate 51 or 52, wherein is to form first alignment film 511 and second alignment film 521 in modes such as ink-jet, surface printing or impressions; Inject a plurality of liquid crystal at last and form liquid crystal layer 53 (step 806) between first substrate 51 and second substrate 52.
Wherein the manufacture method of liquid crystal indicator 50 also can may further comprise the steps (not shown): make reflecting plate on the reflector space of second substrate 52, to form the penetration region T that the reflector space R and the zone that is not reflected are contained; Form the upper electrode layer on corresponding first substrate 51; Form the lower electrode layer on corresponding second substrate 52; Or the formation chromatic filter layer, on corresponding first substrate 51 or second substrate 52.
Liquid crystal disply device and its preparation method of the present invention only must utilize dissimilar alignment materials to be filled on first substrate or second substrate to form alignment film, just forms multiple domain and cuts apart liquid crystal; And as use spraying technology coating alignment materials just can finish the form that the large scale multiple domain is cut apart liquid crystal in the corresponding region.In addition, compare with the expose to the sun optical registration technology of photograph of known light, the alignment film coating technique causes multiple domain to cut apart more to highlight low-cost and the benefit of simplifying flow process.
Though the present invention discloses with specific embodiment, but it is not in order to limit the present invention, any those skilled in the art, the displacement of the equivalent assemblies of under the prerequisite that does not break away from design of the present invention and scope, having done, or, all should still belong to the category that this patent is contained according to equivalent variations and improvement that claim of the present invention is done.
Claims (23)
1. LCD device is characterized in that comprising:
First substrate
Cover first alignment film on first substrate, first alignment film comprises:
The first orientation zone that comprises first alignment materials, and
The second orientation zone that comprises second alignment materials, the second orientation zone that can provide the orientation angle to be different from the orientation angle that the first orientation zone provides, haply with coplanar second orientation zone, first orientation zone, and
Cover the liquid crystal layer and first alignment film on first substrate.
2. LCD device according to claim 1 is characterized in that further comprising covering second substrate that has on first substrate that is arranged in first substrate and the second substrate gap liquid crystal layer.
3. LCD device according to claim 1 is characterized in that first orientation zone and the second orientation zone can provide two liquid crystal regions in the liquid crystal layer, and two have the liquid crystal region that different alignment is arranged.
4. LCD device according to claim 1 is characterized in that the first orientation zone provides the reflector space of a liquid crystal layer.
5. LCD device according to claim 1 is characterized in that the second orientation zone provides the penetration region of a liquid crystal layer.
6. LCD device according to claim 2 is characterized in that further comprising second alignment film that is positioned between second substrate and liquid crystal layer.
7. LCD device according to claim 1 is characterized in that liquid crystal layer comprises a cholesterol liquid crystal at least, a nematic crystal and a disc-like liquid crystal.
8. LCD device according to claim 1 is characterized in that separating first orientation zone or the second orientation zone to intercept wall, or at least surface treatment first orientation zone or with second orientation zone one of them or both.
9. LCD device according to claim 1 is characterized in that wherein at least one is an ink jet printing zone for first orientation zone and the second orientation zone, surface printing processing region, imprinting area.
10. method of making LCD device is characterized in that comprising:
First substrate is provided;
Formation covers first alignment film on first substrate, comprising:
Formation comprises the first orientation zone of first alignment materials, and
Formation comprises the second orientation zone of second alignment materials, the second orientation zone that can provide the orientation angle to be different from the orientation angle that the first orientation zone provides, and in fact with coplanar second orientation zone, first orientation zone, and
The liquid crystal layer and first alignment film that cover on first substrate are provided.
11. method according to claim 10, it is characterized in that forming first alignment film and comprise that a formation has the surface treatment first and second orientation zones, directly form the first and second orientation zones, and separate the first orientation zone from second orientation zone with an obstruct wall.
12. method according to claim 11 is characterized in that using a photoetching, printing, coating, pressing mold and photopolymerization technology.
13. method according to claim 11 is characterized in that forming the obstruct wall by changing the substrate surface feature.
14. method according to claim 10 is characterized in that forming first alignment film and comprises with ink-jet, surface printing, imprint process form first orientation zone and form the second orientation zone.
15. method according to claim 10 is characterized in that forming the first orientation zone and comprises that formation can provide first alignment film of liquid crystal layer reflection.
16. method according to claim 10 is characterized in that forming the second orientation zone and comprises that formation can provide second alignment film of a liquid crystal layer penetration region.
17. method according to claim 10 is characterized in that further comprising forming covering second substrate that has on first substrate that is arranged in first substrate and the second substrate gap liquid crystal layer.
18. method according to claim 17 is characterized in that further comprising that formation is positioned at second alignment film between second substrate and liquid crystal layer.
19. a liquid crystal indicator, its feature is comprising:
First substrate
Cover first alignment film on first substrate, first alignment film comprises:
The first orientation zone that comprises first alignment materials, and
The second orientation zone that comprises second alignment materials, the second orientation zone that can provide the orientation angle to be different from the orientation angle that the first orientation zone provides,
Cover the liquid crystal layer and first alignment film on first substrate;
Cover second substrate that has on first substrate that is arranged in first substrate and the second substrate gap liquid crystal layer;
20. liquid crystal indicator according to claim 19 is characterized in that first orientation zone can provide two liquid crystal regions with different LCD alignment angles with the second orientation zone.
21. liquid crystal indicator according to claim 19 is characterized in that further comprising second alignment film that is positioned between second substrate and liquid crystal layer.
22. liquid crystal indicator according to claim 19 is characterized in that the first orientation zone is separated by using obstruct wall or surface treatment and the second orientation zone.
23. liquid crystal indicator according to claim 19 is characterized in that wherein at least one is an ink jet printing zone for first orientation zone and the second orientation zone, surface printing processing region, imprinting area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610108783 CN101030001A (en) | 2005-08-05 | 2006-08-07 | Liquid crystal display device and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510089817.1 | 2005-08-05 | ||
| CN200510089817 | 2005-08-05 | ||
| CN 200610108783 CN101030001A (en) | 2005-08-05 | 2006-08-07 | Liquid crystal display device and manufacturing method thereof |
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| CN101030001A true CN101030001A (en) | 2007-09-05 |
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| CN 200610108783 Pending CN101030001A (en) | 2005-08-05 | 2006-08-07 | Liquid crystal display device and manufacturing method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8576364B2 (en) | 2007-12-21 | 2013-11-05 | Au Optronics Corp. | Method for forming multiple alignment films on a substrate and pixel structure of a liquid crystal display |
| CN103869542A (en) * | 2012-12-11 | 2014-06-18 | 京东方科技集团股份有限公司 | Preparation method of half transparent and half reflecting liquid crystal panel |
-
2006
- 2006-08-07 CN CN 200610108783 patent/CN101030001A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8576364B2 (en) | 2007-12-21 | 2013-11-05 | Au Optronics Corp. | Method for forming multiple alignment films on a substrate and pixel structure of a liquid crystal display |
| CN103869542A (en) * | 2012-12-11 | 2014-06-18 | 京东方科技集团股份有限公司 | Preparation method of half transparent and half reflecting liquid crystal panel |
| CN103869542B (en) * | 2012-12-11 | 2016-06-01 | 京东方科技集团股份有限公司 | The preparation method of a kind of Transflective liquid crystal panel |
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Open date: 20070905 |