Array substrate, method for manufacturing the same, display device

• US 10,534,233 B2
• Filed: 03/30/2018
• Issued: 01/14/2020
• Est. Priority Date: 09/19/2017
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd., Chongqing BOE Optoelectronics Technology Co., Ltd. (BOE Technology Group Co., Ltd.)
• Original Assignee: BOE Technology Group Co., Ltd.
• Inventors: Tian, Maokun, Huang, Zhonghao, Wu, Xu
• Primary Examiner(s): Taylor, Earl N
• Application Number:
  US15/941,271
• Publication Number:
  US 20190086755A1
• Time in Patent Office: 655 Days
• CPC Class Codes: G02F 1/133345 Insulating layers G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/13439 characterised by their electrical, optical, physical properties; materials therefor; method of making
• CPC Class Codes: G02F 1/136227 Through-hole connection of the pixel electrode to the active element through an insulation layer
• CPC Class Codes: G02F 1/136286 Wiring, e.g. gate line, drain line
• CPC Class Codes: G02F 2201/121 common or background
• CPC Class Codes: G02F 2201/123 pixel
• 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

The present disclosure provides an array substrate, a method for manufacturing the same, and a display device, which belongs to the field of display technology. The array substrate includes a metal electrode layer, a pad layer, a first insulating layer and a first transparent conductive layer, wherein: the pad layer includes a transparent conductive material, the metal electrode layer includes a conductive layer and protection layers formed on both surfaces of the conductive layer, and the pad layer is connected to the metal electrode layer; the first insulating layer is covered on the metal electrode layer and the pad layer, and the first transparent conductive layer is disposed on the first insulating layer; and a via hole is provided in the first insulating layer, and the first transparent conductive layer is connected to the pad layer through the via hole.

Claims

1. An array substrate, comprising a metal electrode layer, a pad layer, a first insulating layer and a first transparent conductive layer, wherein:

the pad layer comprises a transparent conductive material, the metal electrode layer comprises a conductive layer and protection layers formed on both surfaces of the conductive layer, and the pad layer is connected to the metal electrode layer;

the first insulating layer is covered on the metal electrode layer and the pad layer, and the first transparent conductive layer is disposed on the first insulating layer; and

a via hole is provided in the first insulating layer, and the first transparent conductive layer is connected to the pad layer through the via hole.

2. The array substrate according to claim 1, wherein the metal electrode layer is disposed in a first region outside of a second region in which the via hole is disposed, and the first transparent conductive layer is connected to the metal electrode layer through the pad layer disposed between the via hole and the metal electrode layer.

3. The array substrate according to claim 1, wherein the metal electrode layer is disposed in a first region outside of a third region in which the first transparent conductive layer is disposed, and the first transparent conductive layer is connected to the metal electrode layer through the pad layer disposed between the first transparent conductive layer and the metal electrode layer.

4. The array substrate according to claim 1, wherein the via hole is disposed in a second region within a first region in which the metal electrode layer is disposed, and the first transparent conductive layer is connected to the metal electrode layer through the pad layer disposed beneath the via hole.

5. The array substrate according to claim 1, further comprising a second transparent conductive layer, the first insulating layer is covered on the second transparent conductive layer, and the pad layer and the second transparent conductive layer are formed in one patterning process.

6. The array substrate according to claim 5, further comprising a gate conducive layer, a gate insulating layer and an active layer;

the metal electrode layer is connected to the active layer, and all of the metal electrode layer, the active layer and the second transparent conductive layer are disposed on the gate insulating layer; and

the gate conductive layer is overlapped with the active layer, and the gate insulating layer is covered on the gate conductive layer.

7. The array substrate according to claim 5, further comprising a source/drain conductive layer and an active layer, the metal electrode layer comprises a common voltage line and a gate electrode, and the first insulating layer comprises a gate insulating layer and a passivation layer;

the common voltage line is connected to the pad layer, the gate insulating layer is covered on the metal electrode layer, the pad layer and the second transparent conductive layer;

the active layer is overlapped with the gate electrode, and the source/drain conductive layer is connected to the active layer;

the passivation layer is covered on the gate insulating layer, the source/drain conductive layer, and the active layer; and

the first transparent conductive layer is disposed on the passivation layer, a via hole is formed in the gate insulating layer and the passivation layer, and the first transparent conductive layer is connected to the pad layer through the via hole.

8. The array substrate according to claim 1, wherein the conductive layer comprises aluminum, copper, an aluminum-containing alloy or a copper-containing alloy, and the protection layer comprises molybdenum, niobium, a molybdenum-containing alloy or a niobium-containing alloy.

9. A display device comprising an array substrate, the array substrate comprising a metal electrode layer, a pad layer, a first insulating layer and a first transparent conductive layer, wherein:

the pad layer comprises a transparent conductive material, the metal electrode layer comprises a conductive layer and protection layers formed on both surfaces of the conductive layer, and the pad layer is connected to the metal electrode layer;

the first insulating layer is covered on the metal electrode layer and the pad layer, and the first transparent conductive layer is disposed on the first insulating layer; and

a via hole is provided in the first insulating layer, and the first transparent conductive layer is connected to the pad layer through the via hole.

10. The display device according to claim 9, wherein the metal electrode layer is disposed in a first region outside of a second region in which the via hole is disposed, and the first transparent conductive layer is connected to the metal electrode layer through the pad layer disposed between the via hole and the metal electrode layer.

11. The display device according to claim 9, wherein the metal electrode layer is disposed in a first region outside of a third region in which the first transparent conductive layer is disposed, and the first transparent conductive layer is connected to the metal electrode layer through the pad layer disposed between the first transparent conductive layer and the metal electrode layer.

12. The display device according to claim 9, wherein the via hole is disposed in a second region within a first region in which the metal electrode layer is disposed, and the first transparent conductive layer is connected to the metal electrode layer through the pad layer disposed beneath the via hole.

13. The display device according to claim 9, wherein the array substrate further comprises a second transparent conductive layer, the first insulating layer is covered on the second transparent conductive layer, and the pad layer and the second transparent conductive layer are formed in one patterning process.

14. The display device according to claim 13, wherein the array substrate further comprises a gate conducive layer, a gate insulating layer and an active layer;

the metal electrode layer is connected to the active layer, and all of the metal electrode layer, the active layer and the second transparent conductive layer are disposed on the gate insulating layer; and

the gate conductive layer is overlapped with the active layer, and the gate insulating layer is covered on the gate conductive layer.

15. The display device according to claim 13, wherein the array substrate further comprises a source/drain conductive layer and an active layer, the metal electrode layer comprises a common voltage line and a gate electrode, and the first insulating layer comprises a gate insulating layer and a passivation layer;

the common voltage line is connected to the pad layer, the gate insulating layer is covered on the metal electrode layer, the pad layer and the second transparent conductive layer;

the active layer is overlapped with the gate electrode, and the source/drain conductive layer is connected to the active layer;

the passivation layer is covered on the gate insulating layer, the source/drain conductive layer, and the active layer; and

the first transparent conductive layer is disposed on the passivation layer, a via hole is formed in the gate insulating layer and the passivation layer, and the first transparent conductive layer is connected to the pad layer through the via hole.

16. The display device according to claim 9, wherein the conductive layer comprises aluminum, copper, an aluminum-containing alloy or a copper-containing alloy, and the protection layer comprises molybdenum, niobium, a molybdenum-containing alloy or a niobium-containing alloy.