Driving circuit for array substrate, array substrate, display panel, and display device

• US 10,186,228 B2
• Filed: 04/29/2016
• Issued: 01/22/2019
• Est. Priority Date: 08/11/2015
• Status: Active Grant

• Current Assignee: Beijing BOE Display Technology Co Ltd (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Original Assignee: Beijing BOE Display Technology Co Ltd (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Inventors: Hao, Yuanyuan, Hao, Zhaohui, Yao, Zhixiao
• Primary Examiner(s): Pardo, Thuy
• Application Number:
  US15/142,015
• Publication Number:
  US 20170047036A1
• Time in Patent Office: 998 Days
• Field of Search: 345 92, 345 98, 345204, 345209, 345213, 345208, 345206, 345 87, 345 94, 349 40, 438 18, 340 141, 257 59
• CPC Class Codes: G02F 1/136286 Wiring, e.g. gate line, drain line
• CPC Class Codes: G02F 1/13629 Multilayer wirings
• CPC Class Codes: G09G 2300/0421 Structural details of the set of electrodes
• CPC Class Codes: G09G 2320/04 Maintaining the quality of display appearance
• CPC Class Codes: G09G 2330/04 Display protection
• CPC Class Codes: G09G 3/3614 Control of polarity reversal in general
• CPC Class Codes: G09G 3/3696 Generation of voltages supplied to electrode drivers

Abstract

The present disclosure provides a driving circuit for an array substrate, an array substrate, a display panel, and a display device. The driving circuit comprises a plurality of driving signal lines, which are insulated from each other and are used for driving a display region of the array substrate; and at least one driving circuit protection line insulated from the plurality of driving signal lines, wherein a voltage of the driving circuit protection line is smaller than that of each of the plurality of driving signal lines.

Claims

1. A driving circuit for an array substrate, comprising:

a plurality of driving signal lines, which are insulated from each other and are used for driving a display region of the array substrate; and

at least one driving circuit protection line insulated from the plurality of driving signal lines,

wherein a voltage applied to the driving circuit protection line is smaller than a voltage applied to the plurality of driving signal lines;

the driving signal line comprises a first metal layer, a second metal layer and a third metal layer which connects the first metal layer with the second metal layer, and

each driving signal is applied to a corresponding electrode in the display region via the third metal layer.

2. The driving circuit of claim 1, wherein an end of the first metal layer and an end of the second metal layer, which face each other, are provided therein with contact holes respectively, and the third metal layer is connected with the second metal layer and the first metal layer through the contact holes respectively.

3. The driving circuit of claim 1, wherein a negative voltage signal is applied to the driving circuit protection line.

4. The driving circuit of claim 3, wherein a negative voltage signal whose absolute value is smaller than the absolute value of the negative voltage signal applied to the driving circuit protection line is applied to each of the plurality of driving signal lines.

5. The driving circuit of claim 3, wherein a positive voltage signal is applied to each of the plurality of driving signal lines.

6. The driving circuit of claim 3, wherein a direct current negative voltage signal is applied to the driving circuit protection line.

7. The driving circuit of claim 1, wherein the third metal layer comprises transparent electrode material.

8. The driving circuit of claim 1, wherein the first metal layer and a gate are provided in the same layer.

9. The driving circuit of claim 1, wherein the second metal layer, a source and a drain are provided in the same layer.

10. The driving circuit of claim 1, wherein the third metal layer and a pixel electrode are provided in the same layer.

11. An array substrate, comprising the driving circuit of claim 1.

12. A display panel, comprising the array substrate of claim 11.

13. A display device, comprising the display panel of claim 12.

14. A driving circuit for an array substrate, comprising:

a plurality of driving signal lines, which are insulated from each other and are used for driving a display region of the array substrate, and

at least one driving circuit protection line insulated from the plurality of driving signal lines,

wherein a voltage applied to the driving circuit protection line is smaller than a voltage applied to the plurality of driving signal lines,

wherein the driving circuit protection line comprises a first metal layer, a second metal layer and a third metal layer which connects the first metal layer with the second metal layer.

15. The driving circuit of claim 14, wherein an end of the first metal layer and an end of the second metal layer, which face each other, are provided therein with contact holes respectively, and the third metal layer is connected with the second metal layer and the first metal layer through the contact holes respectively.

16. The driving circuit of claim 14, wherein the third metal layer comprises transparent electrode material.

17. The driving circuit of claim 14, wherein the first metal layer and a gate are provided in the same layer.

18. The driving circuit of claim 14, wherein the second metal layer, a source and a drain are provided in the same layer.

19. The driving circuit of claim 14, wherein the third metal layer and a pixel electrode are provided in the same layer.