LIQUID CRYSTAL DISPLAY AND A DEFECT CORRECTING METHOD FOR THE SAME

• US 20110122354A1
• Filed: 02/01/2011
• Published: 05/26/2011
• Est. Priority Date: 12/14/2004
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: TSUBATA, Toshihide, NODA, Tomoki, TAKEUCHI, Masanori, ENDA, Kenji
• Granted Patent: US 8,035,768 B2
• Time in Patent Office: Days
• US Class Current: 349/143
• CPC Class Codes: G02F 1/1309 Repairing; Testing
• CPC Class Codes: G02F 1/134309 characterised by their geometrical arrangement
• CPC Class Codes: G02F 1/136263 Line defects
• CPC Class Codes: G02F 1/1368 in which the switching element is a three-electrode device G02F1/136277 takes precedence
• CPC Class Codes: G02F 2201/508 Pseudo repairing, e.g. a defective part is brought into a condition in which it does not disturb the functioning of the device

Abstract

A liquid crystal display uses a pixel division method by which the size of a defect can be reduced much more than conventionally possible, and a defect correcting method for the liquid crystal display. The liquid crystal display is provided with an active matrix array substrate including a plurality of gate lines and a plurality of source lines arranged on a transparent substrate so as to intersect with each other, and a plurality of pixel electrodes arranged in a matrix, each pixel electrode including an assembly of a plurality of sub-pixel electrodes, separate TFTs respectively connected to the sub-pixel electrodes in the vicinity of an intersection portion of the gate line and the source line, the TFTs being driven by the common gate line and the common source line, and at least one opening portion being formed in a lower-layer side line placed in a lower layer at the intersection portion.

Claims

1. A liquid crystal display provided with an active matrix array substrate, the active matrix array substrate comprising:

a plurality of gate lines extending in a first direction and a plurality of source lines extending in a second direction that is different from the first direction, the plurality of gate lines and the plurality of source lines being arranged on a transparent substrate so as to intersect with each other at an intersection portion;

a plurality of pixel electrodes arranged in a matrix; and

at least one opening portion being formed in at least one of the plurality of gate lines;

wherein

at least one portion of at least one of the plurality of source lines is located within the at least one opening portion and extends in the second direction, and at least one portion of a source electrode projects in the first direction from the at least one of the plurality of source lines and overlaps with the at least one of the plurality of gate lines.

2. The liquid crystal display according to claim 1, wherein the at least one opening portion includes only one opening formed in the at least one of the plurality of gate lines.

3. The liquid crystal display according to claim 1, wherein the at least one opening portion includes a plurality of openings formed in the at least one of the plurality of gate lines.

4. The liquid crystal display according to claim 1, wherein each of the plurality of gate lines includes the at least one opening portion formed therein.

5. The liquid crystal display according to claim 4, wherein the at least one opening portion includes only one opening formed in each of the plurality of gate lines.

6. The liquid crystal display according to claim 4, wherein the at least one opening portion includes a plurality of openings formed in each of the plurality of gate lines.

7. The liquid crystal display according to claim 1, wherein an additional source line is partially connected to and extends along the at least one of the plurality of source lines.

8. The liquid crystal display according to claim 1, further comprising a bypass line being connected to the at least one of the plurality of source lines at the intersection portion.

9. The liquid crystal display according to claim 1, wherein the at least one portion of the source electrode is not located within the at least one opening portion.

10. The liquid crystal display according to claim 1, wherein the at least one opening portion does not contain at least one of an electrode layer and a semiconductor layer.

11. The liquid crystal display according to claim 10, wherein the electrode layer defines a pixel electrode.

12. The liquid crystal display according to claim 1, wherein the at least one portion of the source electrode projects in the first direction from the at least one portion of the at least one of the plurality of source lines to an end point located beyond and outside of the at least one opening portion.

13. The liquid crystal display according to claim 1, wherein the at least one portion of the source electrode projects in the first direction from the at least one of the plurality of source lines at least to an end point of the at least one opening portion.

14. The liquid crystal display according to claim 1, wherein the at least one portion of the source electrode projects in the first direction from the at least one portion of the at least one of the plurality of source lines to a location where a drain electrode is located.

15. The liquid crystal display according to claim 1, wherein the at least one opening portion extends in the first direction from the at least one portion of the at least one of the plurality of source lines along the at least one of the plurality of gate lines.

16. The liquid crystal display according to claim 1, wherein the at least one opening portion extends to a point along a length of the at least one portion of the source electrode.

17. The liquid crystal display according to claim 1, wherein an end of the at least one opening portion is spaced from a drain electrode.

18. The liquid crystal display according to claim 1, wherein the at least one portion of the at least one of the plurality of source lines extends through an approximate center of the at least one opening portion.

19. The liquid crystal display according to claim 1, wherein the at least one opening portion is surrounded by an edge of the gate line.

20. The liquid crystal display according to claim 1, wherein the at least one portion of the source electrode extends in the first direction through less than an entire dimension of the at least one opening portion.

21. The liquid crystal display according to claim 1, further comprising a drain electrode and a storage capacitor electrode connected to each other.

22. The liquid crystal display according to claim 21, wherein the storage capacitor electrode is provided on a segment that protrudes from an auxiliary capacitance line.

23. A liquid crystal display provided with an active matrix array substrate, the active matrix array substrate comprising:

a plurality of gate lines extending in a first direction and a plurality of source lines extending in a second direction that is different from the first direction, the plurality of gate lines and the plurality of source lines being arranged on a transparent substrate so as to intersect with each other; and

a plurality of pixel electrodes arranged in a matrix;

at least one opening portion being formed in at least one of the plurality of gate lines; and

the at least one opening portion is formed only in the at least one of the plurality of gate lines.

24. The liquid crystal display according to claim 23, further comprising a plurality of the opening portions each formed only in a respective one of the plurality of gate lines.

25. A liquid crystal display provided with an active matrix array substrate, the active matrix array substrate comprising:

a plurality of gate lines extending in a first direction and a plurality of source lines extending in a second direction that is different from the first direction, the plurality of gate lines and the plurality of source lines being arranged on a transparent substrate so as to intersect with each other; and

a plurality of pixels arranged in a matrix;

at least one opening portion being formed in at least one of the plurality of gate lines; and

no more than one of the at least one opening portion is provided for one of the plurality of pixels.