Display panels

• US 9,897,879 B2
• Filed: 08/19/2015
• Issued: 02/20/2018
• Est. Priority Date: 01/08/2015
• Status: Active Grant

• Current Assignee: InnoLux Corporation
• Original Assignee: InnoLux Corporation
• Inventors: Liang, Hsing-Yi, Liu, Kuei-Ling, Lee, Te-Yu
• Primary Examiner(s): Nguyen, Sang V
• Application Number:
  US14/830,036
• Publication Number:
  US 20160202584A1
• Time in Patent Office: 916 Days
• CPC Class Codes: G02F 1/136286 Wiring, e.g. gate line, drain line
• CPC Class Codes: G02F 1/1368 in which the switching element is a three-electrode device G02F1/136277 takes precedence
• CPC Class Codes: H01L 27/1222 with a particular composition, shape or crystalline structure of the active layer
• CPC Class Codes: H01L 27/124 with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits wiring structures per se H01L23/52

Abstract

A display panel includes a substrate. A scan line and a data line intersect with each other and are disposed on the substrate. An active layer is disposed on the substrate and between the data line and the substrate. A transparent conductive layer is disposed on the substrate and above the active layer. The active layer includes a contact region electrically connected to the data line, a second contact region electrically connected to the transparent conductive layer, and an intermediate region disposed between the first and the second contact regions. A portion of the intermediate region overlapping with the scan line is a channel region. A portion of the intermediate region not overlapping with the scan line is a non-channel region. The width of the non-channel region is greater than the width of the channel region.

Claims

1. A display panel, comprising:

a first substrate;

a scan line and a data line intersecting with each other and disposed on the first substrate, wherein the scan line extends along a first direction;

an active layer disposed on the first substrate and between the data line and the first substrate; and

a drain electrode and a first transparent conductive layer disposed on the first substrate and over the active layer, wherein a portion of the scan line, a portion of the data line, the drain electrode and the active layer forms a thin-film transistor, and wherein the drain electrode is electrically connected to the active layer through a first via hole, and the first transparent conductive layer is electrically connected to the drain electrode through a second via hole;

wherein the active layer comprises;

a first contact region electrically connected to the data line;

a second contact region electrically connected to the first transparent conductive layer; and

an intermediate region connected between the first contact region and the second contact region, wherein the intermediate region comprises a first channel region, a second channel region, and a non-channel region, wherein the non-channel region is connected between the first channel region and the second channel region,

and wherein at least a portion of an outline of the active layer corresponding to the intermediate region and between the first channel region and the second channel region has an arc shape, and a projection of the second via hole on the first substrate only partially overlaps a projection of the first via hole on the first substrate.

2. The display panel of claim 1, wherein the intermediate region partially overlaps the data line, and the intermediate region includes a first area and a second area disposed on two sides of the data line, respectively, wherein the second area is disposed between the data line and the second contact region.

3. The display panel of claim 2, wherein a width of the first area is equal to a width of the second area.

4. The display panel of claim 2, wherein a width of the first area is greater than a width of the second area.

5. The display panel of claim 2, wherein a width of the first area is smaller than a width of the second area.

6. The display panel of claim 1, wherein a width of the intermediate region near the first contact region is greater than a width of the intermediate region near the second contact region.

7. The display panel of claim 1, wherein a width of the second contact region is greater than a width of the first contact region in a direction parallel to the first direction.

8. The display panel of claim 1, wherein the width of the non-channel region is greater than the width of the second channel region.

9. The display panel of claim 8, wherein a portion of the intermediate region is disposed between the first channel region and the second channel region, a width of the portion of the intermediate region is greater than the width of the first channel region, and the width of the portion of the intermediate region is greater than the width of the second channel region.

10. The display panel of claim 9, wherein the portion of the intermediate region has two protruding parts, the two protruding parts protrude outwards from the first channel region and the second channel region respectively in a direction parallel to the first direction.

11. The display panel of claim 1, further comprising:

a second substrate disposed opposite to the first substrate; and

a display medium disposed between the first substrate and the second substrate.

12. The display panel of claim 1, further comprising a second transparent conductive layer disposed on the first substrate, wherein the second transparent conductive layer is disposed over the first transparent conductive layer.

13. The display panel of claim 12, wherein the second transparent conductive layer is a patterned electrode including a plurality of slits.

14. The display panel of claim 1, further comprising a second transparent conductive layer disposed on the first substrate, wherein the second transparent conductive layer is disposed under the first transparent conductive layer.

15. The display panel of claim 14, wherein the first transparent conductive layer is a patterned electrode including a plurality of slits, and the second transparent conductive layer has an opening near the second contact region.