Color filter having a conductive segment on an insulating segment, the conductive segment configured to electrically connect an electrode layer at opposite sides of the insulating segment

• US 7,023,507 B2
• Filed: 06/30/2003
• Issued: 04/04/2006
• Est. Priority Date: 06/30/2003
• Status: Expired due to Term

• Current Assignee: InnoLux Corporation
• Original Assignee: Toppoly Optoelectronics Corporation (InnoLux Corporation)
• Inventors: Tai, Ya-Hsiang, Chen, Jun Chang
• Primary Examiner(s): Schecter, Andrew
• Assistant Examiner(s): Di Grazio, Jeanne Andrea
• Application Number:
  US10/610,056
• Publication Number:
  US 20040263721A1
• Time in Patent Office: 1,009 Days
• Field of Search: 349/106, 349/110, 349/141, 349/111
• US Class Current: 349/106
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G02F 1/133516 Methods for their manufacture, e.g. printing, electro-deposition or photolithography

Abstract

A color filter and fabricating method thereof. The color filter includes a transparent substrate, provided with a plurality of parallel first light-shielding lines, extending in a first direction, and a plurality of parallel second light-shielding lines, extending in a second direction, wherein a sub-pixel area is defined by two adjacent first light-shielding lines and two adjacent second light-shielding lines. A color-filtering area is formed in the sub-pixel area. An electrode layer is formed on the transparent substrate. At least one insulating line is formed on the electrode layer, directly above a part of the first or the second light-shielding lines, and a conductive line is formed on the insulating line, extending over both ends of the insulating line to electrically connect the electrode layer.

Claims

1. A color filter, applicable for an LCD panel, comprising:

a transparent substrate with a plurality of parallel first light-shielding lines, extending in a first direction, and a plurality of parallel second light-shielding lines, extending in a second direction, formed thereon, wherein a sub-pixel area is defined by two adjacent first light-shielding lines and two adjacent second light-shielding lines;

a color-filtering area in the sub-pixel area;

an electrode layer on the transparent substrate;

at least one insulating segment directly on a part of the electrode layer, directly over the first light-shielding lines; and

a conductive segment on the insulating segment and extending along two opposite sidewalls of the insulating segment to electrically connect the electrode layer at opposite sides of the insulating segment.

2. The color filter as claimed in claim 1, wherein the transparent substrate is glass.

3. The color filter as claimed in claim 1, wherein the first and second light-shielding lines are made of Cr.

4. The color filter as claimed in claim 1, wherein the electrode layer is an indium tin oxide or indium zinc oxide layer.

5. The color filter as claimed in claim 1, wherein the conductive segment is made of Cr, Al or AlNd.

6. The color filter as claimed in claim 1, further comprising a plurality of insulating segments, each formed directly over respective first light-shielding lines.

7. The color filter as claimed in claim 6, further comprising a plurality of conductive segments, each formed directly over respective first light-shielding lines.

8. The color filter as claimed in claim 6, wherein the first and the second directions are perpendicular.

9. A method of fabricating a color filter for LCD panel, comprising:

providing a transparent substrate with a plurality of parallel first light-shielding lines, extending in a first direction, and a plurality of parallel second light-shielding lines, extending in a second direction, formed thereon, wherein a sub-pixel area is defined by two adjacent first light-shielding lines and two adjacent second light-shielding lines;

forming a color-filtering area in the sub-pixel area;

forming an electrode layer on the transparent substrate;

forming at least one insulating segment directly on a part of the electrode layer, directly over the first light-shielding lines; and

forming a conductive segment on the insulating segment and extending along two opposite sidewalls of the insulating segment to electrically connect the electrode layer at opposite sides of the insulating segment.

10. The method as claimed in claim 9, wherein the transparent substrate is glass.

11. The method as claimed in claim 9, wherein the first and second light-shielding lines are made of Cr.

12. The method as claimed in claim 9, wherein the electrode layer is an indium tin oxide or indium zinc oxide layer.

13. The method as claimed in claim 9, wherein the conductive segment is made of Cr, Al or AlNd.

14. The method as claimed in claim 9, further comprising a step of forming a plurality of insulating segments on the electrode layer, each formed directly over respective first light-shielding lines.

15. The method as claimed in claim 14, further comprising a step of forming a plurality of conductive segments on the insulating lines.

16. The method as claimed in claim 9, wherein the first and the second directions are perpendicular.

17. The method as claimed in claim 9, wherein the insulating segment and conductive segment are formed by respective photolithography.