Liquid crystal display device, color filter substrate and protruding structure, and manufacturing method thereof

• US 20050179853A1
• Filed: 02/16/2005
• Published: 08/18/2005
• Est. Priority Date: 02/17/2004
• Status: Active Grant

• Current Assignee: InnoLux Corporation
• Original Assignee: Chi Mei Innolux Corporation (InnoLux Corporation)
• Inventors: Chen, Yu-Jen, Lin, Ching-Shan, Wu, Yuan-Liang
• Granted Patent: US 7,738,067 B2
• Time in Patent Office: Days
• US Class Current: 349/155
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G02F 1/13394 spacers regularly patterned on the cell subtrate, e.g. walls, pillars G02F1/133377 takes precedence
• CPC Class Codes: G02F 1/13415 Drop filling process

Abstract

A liquid crystal display device, a color filter substrate and a protruding structure, and a manufacturing method thereof are provided. The color filter substrate includes a transparent substrate, a black matrix, a plurality of color filters, a plurality of first protruding structures, and a plurality of second protruding structures. The black matrix is disposed on the transparent substrate and exposes part of the transparent substrate for defining a plurality of first openings, a plurality of second openings, and a plurality of pixel regions, wherein the size of each first opening is different from the size of each second opening. In addition, the color filters are disposed in the pixel regions. The first protruding structures and the second protruding structures are disposed on the transparent substrate, wherein the first protruding structures correspond to the first openings respectively and the second protruding structures correspond to the second openings respectively.

Claims

1. A liquid crystal display device comprising:

a first substrate having a pattern, the pattern defining spacer areas;

a second substrate binding with the first substrate to form a cavity;

a liquid crystal material disposed within the cavity; and

spacers disposed on the spacer areas.

2. The liquid crystal display device of claim 1, wherein the pattern comprises a black matrix.

3. The liquid crystal display device of claim 1, wherein the pattern comprises a color filter.

4. The liquid crystal display device of claim 1, wherein the pattern comprises a first metal layer.

5. The liquid crystal display device of claim 4, wherein the pattern comprises a second metal layer.

6. The liquid crystal display device of claim 1, wherein the spacers are formed by a light exposure and hardening process.

7. The liquid crystal display device of claim 1, wherein a penetration ratio of an area outside the spacer area is less than about 7.1%.

8. The liquid crystal display device of claim 7, wherein the penetration ratio of the area outside the spacer area is less than about 1.31%.

9. The liquid crystal display device of claim 1, wherein the spacer areas are disposed at a location that corresponds to a thin film transistor (TFT).

10. The liquid crystal display device of claim 1, wherein the spacer areas are disposed at a location that corresponds to an auxiliary capacitor electrode.

11. The liquid crystal display device of claim 2 further comprising a color filter, wherein the color filter is disposed at a location that corresponds to a pixel area, and wherein the spacer areas are not covered by the color filter.

12. The liquid crystal display device of claim 11, wherein the color filter comprises a light absorbent.

13. The liquid crystal display device of claim 11, wherein the first substrate and the second substrate define a cell gap, wherein the cell gap has a height, wherein the spacer has a height, and wherein the height of the spacer is greater than the height of the cell gap.

14. The liquid crystal display device of claim 11, wherein the first substrate comprises a first alignment film, wherein the second substrate comprises a second alignment film, and wherein the cell gap is an average distance between the first alignment film and the second alignment film.

15. The liquid crystal display device of claim 1, wherein the spacers are comprised of opaque materials.

16. The liquid crystal display device of claim 15, wherein the opaque material is a black resin.

17. The liquid crystal display device of claim 1:

wherein the pattern defines first openings, each first opening being a first size;

wherein the pattern further defines second openings, each second opening being a second size, the second size being different from the first size;

wherein the spacers comprise first protruding structures, the first protruding structures corresponding to the first openings, each first protruding structure having a first height;

wherein the spacers further comprise second protruding structures, the second protruding structures corresponding to the second openings, each second protruding structure having a second height, the second height being different from the first height

18. A method of fabricating a liquid crystal display device comprising:

providing a first substrate;

forming a masking pattern on the surface of the first substrate, the masking pattern defining spacer areas;

coating a photoresistance on an interior surface of the first substrate;

illuminating a light source on an exterior surface of the first substrate; and

developing the photoresistance to form spacers.

19. The method of fabricating a liquid crystal display device of claim 18 further comprising:

providing a second substrate;

combining the first substrate and the second substrate to form a cavity; and

inserting a liquid crystal material into the cavity.

20. The method of fabricating a liquid crystal display device of claim 18 further comprising:

providing a second substrate;

dropping a liquid crystal material onto either the first substrate or the second substrate; and

combining the first substrate and the second substrate to seal the liquid crystal material between the first substrate and the second substrate.

21. The method of fabricating a liquid crystal display device of claim 18, wherein the masking pattern is a black matrix.

22. The method of fabricating a liquid crystal display device of claim 18, wherein the masking pattern is a color filter.

23. The method of fabricating a liquid crystal display device of claim 18, wherein the masking pattern is a first metal.

24. The method of fabricating a liquid crystal display device of claim 18, wherein the masking pattern is a second metal.

25. The method of fabricating a liquid crystal display device of claim 18:

wherein the masking pattern further comprises first openings, each first opening being a first size, each first opening having a first photoresistance depth;

wherein the masking pattern further comprises second second openings, each second opening being a second size, the second size being different from the first size, each second opening having a second photoresistance depth, the second photoresistance depth being different from the first photoresistance depth;

wherein, after the photoresistance is developed, the method further comprises;

forming first protruding structures corresponding to the first openings, each of the first protruding structures having a first height;

forming second protruding structures corresponding to the second openings, each of the second protruding structures having a second height, the second height being different from the first height.

26. A color filter substrate of a liquid crystal display device comprising:

a transparent substrate;

a black matrix coated on the transparent substrate, part of the transparent substrate being exposed to define spacer areas, part of the transparent substrate being exposed to define pixel areas;

color filters on the pixel area; and

spacers disposed on the spacer areas.

27. The color filter substrate of the liquid crystal display device of claim 26 further comprising:

an alignment film disposed on the black matrix, the alignment film further being disposed on the color filter, the alignment film further being disposed on the spacers.

28. The color filter substrate of the liquid crystal display device of claim 26 further comprising:

a common electrode disposed on the color filter, the common electrode further being disposed on the black matrix, the common electrode further being disposed on the spacer areas.

29. The color filter substrate of the liquid crystal display device of claim 26:

wherein the spacer areas further comprise first openings, the first openings having a first size;

wherein the spacer areas further comprise second openings, the second openings having a second size, the second size being different from the first size;

wherein the substrate further comprises first protruding structures corresponding to the first openings, each first protruding structure being a first height;

wherein the substrate further comprises second protruding structures corresponding to the second openings, each second protruding structure being a second height, the second height being different from the first height.

30. A method of fabricating a color filter substrate for a liquid crystal display device comprising:

providing a transparent substrate having a first side and a second side;

forming a black matrix on the first side;

exposing part of the transparent substrate to define spacer areas and pixel areas;

forming a plurality of color filters on the pixel areas;

coating a photoresistance on the first side of the transparent substrate;

exposing the second side of the transparent substrate with light; and

developing the photoresistance to form spacers.

31. The method of fabricating the color filter substrate of claim 30 further comprising:

disposing an alignment film on the black matrix, the alignment film further being disposed on the color filter, the alignment film further being disposed on the spacers.

32. The method of fabricating the color filter substrate of claim 30 further comprising:

disposing a common electrode on the color filter, the common electrode further being disposed on the black matrix, the common electrode further being disposed on the spacers.

33. A liquid crystal display device comprising:

a first substrate comprising a partially-exposed transparent substrate;

a black matrix coated on the transparent substrate, the black matrix for defining a plurality of spacer areas and pixel areas;

a plurality of spacers disposed on the spacer areas;

a transistor substrate binding with the first substrate, the transistor substrate comprising a plurality of pixel electrodes; and

a liquid crystal material disposed between the first substrate and the transistor substrate.

34. The liquid crystal display device of claim 33, wherein the first substrate further comprises a plurality of color filters disposed on the pixel areas.

35. The liquid crystal display device of claim 34 further comprising:

an alignment film disposed on the black matrix, the alignment film further being disposed on the color filter, the alignment film further being disposed on the spacers.

36. The liquid crystal display device of claim 34, wherein the first substrate further comprises a common electrode disposed on the color filter, the common electrode further being disposed on black matrix, the common electrode further being disposed on the spacer areas.

37. The liquid crystal display device of claim 33, wherein the first substrate and the transistor substrate define a cell gap, the cell gap having a height, the spacer having a height, the height of the spacer being greater than the height of the cell gap.

38. The liquid crystal display device of claim 33, wherein the first substrate comprises a first alignment film, the transistor substrate comprising a second alignment film, wherein the cell gap is an average distance between the first alignment film and the second alignment film.

39. A method of fabricating a liquid crystal display device comprising:

providing a transparent substrate having a first side and a second side;

forming a black matrix on the first side;

exposing part of the transparent substrate to define a plurality of spacer areas and pixel areas;

forming a plurality of color filters on the pixel areas;

coating a photoresistance on the first side of the transparent substrate;

exposing the second side of the transparent substrate with light;

developing the photoresistance to form a plurality of spacers on the spacer areas;

providing a transistor substrate having a plurality of pixel electrodes;

binding the transistor substrate to the transparent substrate; and

filling a liquid crystal material between the transistor substrate and the transparent substrate.

40. The method of fabricating the color filter substrate of claim 39 further comprising:

disposing an alignment film on the black matrix, the alignment film further being disposed on the color filter, the alignment film further being disposed on the spacers.

41. The method of fabricating the color filter substrate of claim 39 further comprising:

disposing a common electrode on the color filter, the common electrode further being disposed on the black matrix, the common electrode further being disposed on the spacers.