Display device

Patent metadata

Field	Value
Publication number	US-9632375-B2
Application number	US-201514656414-A
Country	US
Kind code	B2
Filing date	Mar 12, 2015
Priority date	Mar 14, 2014
Publication date	Apr 25, 2017
Grant date	Apr 25, 2017

Abstract

A display device is provided. The display device includes a switch including a gate, an active layer disposed on the gate, a source electrode connected to the active layer, and a drain electrode connected to the active layer. In particular, the distance between the edge of the gate electrode and the edge of the active layer is 1.2 to 3 μm. The drain electrode includes a connection portion, an oblique portion, and an extension portion, wherein the oblique portion is disposed between the connection portion and the extension portion, and wherein at least a part of the oblique portion overlaps with the gate electrode.

First claim

What is claimed is:

1. A display device, comprising:
a switch, wherein the switch comprises:
a gate electrode;
an active layer disposed on the gate electrode, wherein a distance between at least one edge of the gate electrode and the active layer is between 1.2 μm and 3 μm;
a source electrode connected to the active layer;
a drain electrode connected to the active layer, wherein the drain electrode comprises a connection portion, an oblique portion, and an extension portion, wherein the oblique portion is disposed between the connection portion and the extension portion, and wherein at least a part of the oblique portion overlaps with the gate electrode.

2. The display device as claimed in claim 1 , further comprising:
a gate line substantially extending along a first direction, wherein the gate line electrically connects to the gate electrode; and
a data line substantially extending along a second direction, wherein the data line electrically connects to the source electrode.

3. The display device as claimed in claim 2 , wherein the oblique portion extends along a third direction, and wherein an included angle between the third direction and the first direction is larger than 0 degree and less than 90 degrees.

4. The display device as claimed in claim 2 , wherein the switch connects to a pixel, and the pixel comprises a first passivation layer disposed on the drain electrode, a planarization layer disposed on the first passivation layer, a first electrode disposed on the planarization layer, a second passivation layer disposed on the first electrode, and a second electrode disposed on the second passivation layer, wherein the second electrode comprises at least two finger portions, and a connecting portion, and the finger portions connect to each other via the connecting portion.

5. The display device as claimed in claim 4 , wherein each finger portion has a width between 2.25 μm and 2.75 μm.

6. The display device as claimed in claim 4 , wherein a distance between any two adjacent finger portions is between 2.9 μm and 4.5 μm.

7. The display device as claimed in claim 4 , wherein a sum of a distance between the finger portion and the data line and a width of the data line is between 7.6 μm and 9.0 μm.

8. The display device as claimed in claim 4 , wherein a distance between the finger portions of the second electrode of any two adjacent pixels is between 9.5 μm and 12 μm.

9. The display device as claimed in claim 4 , wherein a thickness of the second passivation layer is between 900 Å and 1700 Å.

10. The display device as claimed in claim 4 , wherein a first opening is disposed within the first electrode, a second opening is disposed within the planarization layer, and a third opening is disposed within the first passivation layer.

11. The display device as claimed in claim 10 , wherein a maximum width of the first opening is between 4 μm and 10.5 μm.

12. The display device as claimed in claim 10 , wherein a maximum width of the second opening is between 3.7 μm and 7.5 μm.

13. The display device as claimed in claim 10 , wherein a maximum width of the third opening is between 2.5 μm and 4.5 μm.

14. The display device as claimed in claim 10 , wherein, in the first opening, the second electrode is separated from an edge of the drain electrode by a gap.

15. The display device as claimed in claim 10 , wherein a boundary of the second opening intersects a boundary of the third opening at two points of intersection.

16. The display device as claimed in claim 10 , wherein, in the second opening, the second electrode is separated from an edge of the planarization layer by a distance.

17. The display device as claimed in claim 4 , wherein a ratio between a length of the pixel and a width of the pixel is between 2.8 and 3.2, and wherein the length of the pixel is between 40 μm and 70 μm, and width of the pixel is between 14 μm and 23 μm.

18. The display device as claimed in claim 4 , wherein the area of the pixel is between 600 μm 2 and 1600 μm 2 .

19. The display device as claimed in claim 1 , wherein a projection of the active layer onto a horizontal plane has an area of 18 μm 2 and 77 μm 2 .

20. The display device as claimed in claim 19 , wherein a length in the first direction of the projection is between 6 μm and 11 μm, or wherein a length in the second direction of the projection is between 3 μm and 7 μm.

Assignees

• Innolux Corp

Inventors

• Chen Hung-Kun
• Lee Yi-Chin
• Chang Hong-Kang
• Kao Yi-Chien
• Chu Jui-Ching
• Sung Li-Wei
• Huang Hui-Min

Classifications

• G09G3/20

  for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters} · CPC title

• G02F1/13394

  spacers regularly patterned on the cell subtrate, e.g. walls, pillars (G02F1/133377 takes precedence) · CPC title

• G02F2201/40

  Arrangements for improving the aperture ratio · CPC title

• G09G2300/0426

  Layout of electrodes and connections · CPC title

• G09G3/36

  using liquid crystals · CPC title