Pixel structure, touch display panel and liquid crystal display

• US 8,773,481 B2
• Filed: 03/10/2010
• Issued: 07/08/2014
• Est. Priority Date: 03/11/2009
• Status: Active Grant

• Current Assignee: AU Optronics Corporation
• Original Assignee: AU Optronics Corporation
• Inventors: Lu, Ying-Chi, Chai, Chih-Yun, Li, Ming-Chun, Huang, Hong-Ji, Lee, Seok-Lyul
• Primary Examiner(s): Lao, Lun-Yi
• Assistant Examiner(s): SHAH, PRIYANK J
• Application Number:
  US12/720,674
• Publication Number:
  US 20100231544A1
• Time in Patent Office: 1,581 Days
• Field of Search: 345 87-104, 345/156, 345173-174, 345694-695, 349139-141, 349/147, 349/99
• US Class Current: 345/695
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/134318 having a patterned common electrode
• CPC Class Codes: G02F 1/134363 for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display

Abstract

A pixel structure disposed on a substrate including a scan line, a data line, an active element, a first electrode, and a second electrode is provided. The scan line and the data line are intersected to define a rectangular pixel area. The active element is electrically connected to the scan line and the data line. The first electrode has stripe patterns and connecting patterns located in the rectangular pixel area. Each connecting pattern is connected to the central parts or the parts near the central parts of two adjacent stripe patterns to demarcate or define two silts between the two adjacent stripe patterns. The extending direction of the slits is intersected to the rectangle length of the rectangular pixel area by an angle θ wherein 0°≦θ<45°. The second electrode is located between the first electrode and the substrate and part of the second electrode is exposed by the slits.

Claims

1. A pixel structure disposed on a substrate, and the pixel structure comprising:

a scan line;

a data line intersected with the scan line so as to define a rectangular pixel region;

an active device electrically connected to the scan line and the data line;

a first electrode having a plurality of stripe patterns and a plurality of connecting patterns located in the rectangular pixel region, and the connecting patterns connecting at least one of a plurality of two adjacent stripe patterns at a center part of the respective stripe patterns to demarcate a plurality of slits, two of the slits being separated by one of the connecting patterns such that one of the two slits is located at a side of the one of the connecting patterns adjacent to the scan line, and the other of the two slits is located at another side of the one of the connecting patterns away from the scan line, wherein an extending direction of the silts intersects with a rectangle length of the rectangular pixel region at an angle θ and

θ

complies with 0°

≦

θ

<

45°

; and

a second electrode located between the first electrode and the substrate, and the slits exposing a portion of the second electrode;

at least another one of the plurality of the two adjacent stripe patterns are not separated by the connecting patterns.

2. The pixel structure according to claim 1, wherein the stripe patterns are a plurality of straight line patterns.

3. The pixel structure according to claim 1, wherein the stripe patterns are a plurality of bended patterns and each of the stripe patterns has a bended portion which is located between two ends of the stripe pattern.

4. The pixel structure according to claim 1, wherein the second electrode is a complete block and entirely disposed in the rectangular pixel region of the substrate.

5. The pixel structure according to claim 1, wherein the active device electrically connected to the first electrode and electrically insulated with the second electrode.

6. The pixel structure according to claim 1, wherein the active device electrically connected to the second electrode and electrically insulated with the first electrode.

7. A touch display panel comprising:

a substrate having a plurality of pixel structures as claimed in claim 1;

an opposite substrate disposed opposite to the substrate;

a light-valve layer located between the substrate and the opposite substrate;

a touch device layer disposed on the opposite substrate; and

an opposite electrode disposed between the light-valve layer and the touch device layer.

8. The pixel structure according to claim 1, wherein the connecting patterns are arranged along a virtual axis which is substantially parallel to the scan line.

9. A pixel structure disposed on a substrate and comprising:

a scan line;

a data line intersecting with the scan line so as to define a rectangular pixel region, and the rectangular pixel region has a rectangle length and a rectangle width, wherein a length of the rectangle length is L, a length of the rectangle width is W, and W is smaller than L;

a first electrode disposed on the substrate and having a plurality of slits located in the rectangular pixel region, wherein a length of each of the slits is Γ

; and

a second electrode disposed in the rectangular pixel region of the substrate and the slits exposing a portion of the second electrode,

wherein a relationship of L and Γ

complies with 0.50L<

Γ

<

0.71L;

wherein the first electrode disposed on the substrate further has a plurality of stripe patterns and a plurality of connecting patterns, and the connecting patterns connecting at least one of a plurality of two adjacent stripe patterns at a center part of the respective stripe patterns to demarcate a plurality of slits, wherein two of the slits being separated by one of the connecting patterns such that one of the two slits is located at a side of the each of the connecting patterns adjacent to the scan line and the other of the two slits is located at another side of the each of the connecting patterns away from the scan line; and

at least another one of the plurality of the two adjacent stripe patterns are not separated by the connecting patterns.

10. The pixel structure according to claim 9, wherein the first electrode disposed on the substrate further have a plurality of connecting patterns, wherein two of the slits being separated by one of the connecting patterns such that one of the two slits is located at a side of the each of the connecting patterns adjacent to the scan line and the other of the two slits is located at another side of the each of the connecting patterns away from the scan line.

11. A touch display panel comprising:

a substrate and an opposite substrate, the substrate has a rectangular pixel region having a rectangle length and a rectangle width, a length of the rectangle length is L, a length of the rectangle width is W, and W is smaller than L;

a light-valve layer located between the substrate and the opposite substrate;

an active device disposed on the substrate;

a first electrode disposed on the substrate having a plurality of slits located in the rectangular pixel region, and a length of each of the slits is Γ

, wherein the rectangle length and each of the slits intersect at a first angle θ

, and the rectangle width and each of the slits intersect at a second angle ψ

, wherein θ

is smaller than ψ

;

a second electrode disposed in the rectangular pixel region of the substrate and the slits exposing a portion of the second electrode;

a touch device layer disposed on the opposite substrate; and

an opposite electrode disposed between the light-valve layer and the touch device layer,

wherein a relationship of L and Γ

complies with 0.50L <

Γ

<

0.71L;

wherein the first electrode disposed on the substrate further has a plurality of stripe patterns and a plurality of connecting patterns, and the connecting patterns connecting at least one of a plurality of two adjacent stripe patterns at a center part of the respective stripe patterns to demarcate a plurality of slits, wherein two of the slits being separated by one of the connecting patterns such that one of the two slits is located at a side of the each of the connecting patterns adjacent to the scan line and the other of the two slits is located at another side of the each of the connecting patterns away from the scan line; and

at least another one of the plurality of the two adjacent stripe patterns are not separated by the connecting patterns.

12. The touch display panel according to claim 11, wherein the opposite substrate is located between the touch device layer and the opposite electrode.

13. The touch panel display panel according to claim 11, wherein the touch device layer is located between the opposite substrate and the opposite electrode.

14. The touch display panel according to claim 13, wherein the touch device layer has a plurality of color filter patterns.

15. The touch display panel according to claim 11, wherein the active device is electrically connected to the first electrode, and electrically insulted with the second electrode.

16. The touch display panel according to claim 11, wherein the active device is electrically connected to the second electrode, and electrically insulted with the first electrode.

17. The touch display panel according to claim 11, wherein a relationship of the L and the Γ

complies with 0.50L <

Γ

≦

0.52L.

18. The touch display panel according to claim 11, wherein the opposite electrode is a transparent electrode.

19. The touch display panel according to claim 11, wherein the first electrode disposed on the substrate further have a plurality of connecting patterns, wherein two of the slits being separated by one of the connecting patterns such that one of the two slits is located at a side of the each of the connecting patterns adjacent to the scan line and the other of the two slits is located at another side of the each of the connecting patterns away from the scan line.

20. A pixel structure disposed in a rectangular pixel region of a substrate, wherein the rectangular pixel region has a long axis direction Y and a short axis direction X, and the pixel structure comprising:

an upper transparent electrode located in the rectangular pixel region having a first slit and a second slit, the first slit and the second slit being separated by a connecting pattern so as to be alternately arranged along the long axis direction Y, the first slit intersected clockwise with the long axis direction Y at a first angle θ

1 while 0°

≦

45°

, and the second slit intersected counterclockwise with the long axis direction Y at a second angle θ

2 while 0°

≦

θ

2 <

45°

, wherein the first angle θ

1 and the second angle θ

2 are axile symmetric according the short axis direction X; and

a bottom electrode located between the upper electrode and the substrate and the bottom electrode being a whole block transparent electrode;

the upper transparent electrode located in the rectangular pixel region further having a third slit and a fourth slit, the third slit and the fourth slit not being separated by the connecting pattern so as to be alternately arranged along the long axis direction Y.

21. The pixel structure according to claim 20, wherein the rectangular pixel region has a rectangle length with a length L parallel to the long axis direction Y, a length of the first slit or the second slit is Γ

, and a relationship of L and Γ

complies with 0.50L<

Γ

≦

0.52L.

22. A touch display panel comprising:

a substrate having a plurality of pixel structures as claimed in claim 20;

an opposite substrate disposed opposite to the substrate;

a light-valve layer located between the substrate and the opposite substrate;

a touch device layer disposed on the opposite substrate; and

an opposite electrode disposed between the light-valve layer and the touch device layer.