Liquid crystal display and light irradiating apparatus therefor

• US 20030035081A1
• Filed: 05/17/2002
• Published: 02/20/2003
• Est. Priority Date: 08/20/2001
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Lee, Woo-Shih, Jung, Sung-Wook, Lee, Sang-Jun, Kwon, Yong-Joon
• Application Number:
  US10/150,444
• Publication Number:
  US 20030035081A1
• Time in Patent Office: Days
• US Class Current: 349/152
• CPC Class Codes: G02F 1/1339 Gaskets; Spacers; Sealing of cells
• CPC Class Codes: G02F 1/1345 Conductors connecting electrodes to cell terminals
• CPC Class Codes: G02F 1/13458 Terminal pads

Abstract

A liquid crystal device includes panels disposed opposite each other along a major surface, a liquid crystal layer interposed between the panels, a sealant disposed between the panels for confining the liquid crystal layer, a display area defined within the liquid crystal layer, a fan out area adjacent to the display area, and signal lines overlapped by the sealant in the fan out area where the distance between adjacent signal lines is one to ten times as large as the width of the signal lines; and a corresponding method for curing a liquid crystal device includes supporting the liquid crystal device, emitting light for curing the sealant, and redirecting the emitted light towards at least one surface of the liquid crystal device.

Claims

1. A liquid crystal display panel comprising:

an insulating substrate;

a plurality of signal lines provided on the substrate; and

a plurality of signal pads connected to the signal lines for receiving signals from an external device,

wherein the distance between the signal lines near the signal pads is one to ten times as large as the width of the signal lines.

2. The liquid crystal display panel of claim 1, wherein the width of the signal lines is about 10 to about 100 microns.

3. The liquid crystal display panel of claim 2, wherein the signal lines are bent near the signal pads.

4. A liquid crystal display comprising:

a display area where images are displayed, the display area having a plurality of gate lines for transmitting scanning signals and a plurality of data lines for transmitting image signals;

a pad area having a plurality of gate pads and a plurality of data pads, the gate pads connected to the gate lines for transmitting the scanning signals from an external source to the gate lines and the data pads connected to the data lines for transmitting the image signals from an external source to the data lines; and

a fan out area disposed between the display area and the pad area and having a sealant for confining liquid crystal material, the sealant surrounding the display area and overlapping at least one of the gate lines and the data lines but not overlapping the gate pads and the data pads.

5. The liquid crystal display of claim 4, wherein the distance between adjacent ones among the gate lines and the data lines in the fan out area is one to ten times as large as the width of the adjacent lines.

6. The liquid crystal display of claim 5, wherein the width of the adjacent lines ranges from about 10 to about 100 microns.

7. The liquid crystal display of claim 4, wherein the sealant is ultraviolet light curable.

8. The liquid crystal display of claim 4, wherein at least one of the gate lines and the data lines are bent in the fan out area, and at least a portion of the sealant overlaps the bent portion of the at least one of the gate lines and the data lines.

9. A light irradiating apparatus for a liquid crystal display, comprising:

a light-emitting member;

a supporting member disposed relative to the light-emitting member for supporting a liquid crystal display including two opposite panels and a photo curable sealant formed between the two panels; and

a light path-changing member disposed relative to the light-emitting member for changing the travel direction of light emitted from the light-emitting member, the light path-changing member arranged so that the light path-changing member is disposed relative to at least one of a top, a bottom and a lateral side of the liquid crystal display.

10. The light irradiating apparatus of claim 9, wherein the light from the light-emitting member comprises ultraviolet light.

11. The light irradiating apparatus of claim 9, wherein the light path-changing member reflects or scatters light.

12. The light irradiating apparatus of claim 11, wherein the light path-changing member is disposed above the supporting member so that the liquid crystal display is placed on the light path-changing member.

13. The light irradiating apparatus of claim 12, wherein the light-path-changing member is integrated with the supporting member.

14. The light irradiating apparatus of claim 12, further comprising a light transmission member disposed above the light path-changing member so that the liquid crystal display is placed on the light transmission member.

15. The light irradiating apparatus of claim 11, wherein the light path-changing member has an uneven surface randomly reflecting light.

16. The light irradiating apparatus of claim 9, wherein the light path-changing member comprises a first changer disposed between the supporting member and the light-emitting member.

17. The light irradiating apparatus of claim 16, wherein the light path-changing member further comprises a second changer disposed between the supporting member and the light-emitting member so that the liquid crystal display is placed between the first and the second changers.

18. The light irradiating apparatus of claim 9, wherein the light path-changing member comprises a plurality of changers arranged in multiple stages so that the changers are disposed at lateral sides of the liquid crystal display.

19. The light irradiating apparatus of claim 9, wherein the light-path-changing member has an inclined reflecting surface and is arranged so that the light path-changing member is located at a lateral side of the liquid crystal display.

20. The light irradiating apparatus of claim 9 wherein the light path-changing member focuses light.

21. A method for curing a liquid crystal device having at least two opposite panels and a photo-curable sealant therebetween, the method comprising:

supporting the liquid crystal device;

emitting light for curing the photo-curable sealant; and

redirecting the emitted light towards at least one surface of the liquid crystal device.

22. A method as defined in claim 21 wherein the redirected light comprises ultraviolet light.

23. A method as defined in claim 21 wherein redirecting comprises at least one of reflecting and scattering the emitted light.

24. A method as defined in claim 21, further comprising transmitting the redirected light through a transmission member disposed relative to a surface of the liquid crystal device.

25. A method as defined in claim 21 wherein redirecting comprises randomly reflecting the emitted light from an uneven surface.

26. A method as defined in claim 21, further comprising reflecting light that has passed through the liquid crystal device back towards the liquid crystal device.

27. A method as defined in claim 26 wherein the reflected light is directed towards a part of the liquid crystal device different than it came through.

28. A method as defined in claim 21 wherein redirecting comprises changing the path of the emitted light at lateral sides of the liquid crystal device.

29. A method as defined in claim 21, further comprising inclining a reflecting surface so that the redirected light is directed towards a lateral side of the liquid crystal device.

30. A method as defined in claim 21, further comprising focusing the emitted light.

31. A method as defined in claim 21 wherein substantially all of the photo-curable sealant is cured.

32. A liquid crystal device comprising:

a plurality of panels disposed opposite each other along a major surface;

a liquid crystal layer interposed between at least one pair of the plurality of panels;

a sealant disposed between the at least one pair of the plurality of panels for confining the liquid crystal layer;

a display area defined within the liquid crystal layer;

a fan out area adjacent to the display area;

a plurality of signal lines overlapping the sealant in the fan out area wherein the distance between an adjacent pair of signal lines is one to ten times as large as the widths of the adjacent signal lines.

33. A liquid crystal device as defined in claim 32 wherein the signal lines comprise data lines and gate lines.

34. A liquid crystal device as defined in claim 32 wherein the widths of the plurality of signal lines range from about 10 microns to about 100 microns.

35. A liquid crystal device as defined in claim 32 wherein the widths of the adjacent signal lines range from about 10 microns to about 100 microns.

36. A liquid crystal device as defined in claim 32 wherein the sealant comprises an ultraviolet light curable material.

37. A liquid crystal device as defined in claim 32 wherein at least one of the plurality of signal lines is overlapped by the sealant.

38. A liquid crystal device as defined in claim 32 wherein at least one of the adjacent signal lines is overlapped by the sealant.

39. A liquid crystal device as defined in claim 32, further comprising a plurality of signal pads coupled to the signal lines in the fan out area.

40. A liquid crystal device as defined in claim 39 wherein the plurality of signal pads is not overlapped by the sealant.

41. A liquid crystal device as defined in claim 32 wherein the number of the plurality of panels is two.

42. A liquid crystal device as defined in claim 32 wherein the widths of the adjacent signal lines are equal.