Array substrate and display apparatus

Patent metadata

Field	Value
Publication number	US-10535318-B2
Application number	US-201816090431-A
Country	US
Kind code	B2
Filing date	Apr 11, 2018
Priority date	Aug 21, 2017
Publication date	Jan 14, 2020
Grant date	Jan 14, 2020

Abstract

The present disclosure is related to an array substrate. The array substrate may include a plurality of gate lines, a plurality of data lines intersecting the gate lines, and a first gate driving circuit comprising a plurality of shift register circuits in a non-active area. The gate lines and the data lines may define a plurality of sub-pixels in an active area and a plurality of dummy sub-pixels in the non-active area adjacent to the active area. The first gate driving circuit may be farther away from the active area than the plurality of the dummy sub-pixels. At least one of the dummy sub-pixels may include an auxiliary capacitor. A shift register circuit in the first gate driving circuit may be coupled to the auxiliary capacitor. The auxiliary capacitor may form at least a part of a bootstrap capacitor in the shift register circuit.

First claim

What is claimed is:

1. An array substrate, comprising:
a plurality of gate lines;
a plurality of data lines intersecting the gate lines; and
a first gate driving circuit comprising a plurality of shift register circuits in a non-active area,
wherein the gate lines and the data lines define a plurality of sub-pixels in an active area and a plurality of dummy sub-pixels in the non-active area adjacent to the active area, the first gate driving circuit is farther away from the active area than the plurality of the dummy sub-pixels; and wherein at least one of the dummy sub-pixels comprises an auxiliary capacitor, a shift register circuit in the first gate driving circuit is coupled to the auxiliary capacitor, and the auxiliary capacitor forms at least a part of a bootstrap capacitor in the shift register circuit.

2. The array substrate according to claim 1 , further comprising:
a common electrode line,
a common electrode and a pixel electrode in each of the dummy sub-pixels in the non-active region and each of the sub-pixels in the active area;
wherein the common electrode and the pixel electrode are arranged in different layers, and;
wherein in at least one of the dummy sub-pixels, the common electrode is shared as a first electrode of an auxiliary capacitor and the pixel electrode is shared as a second electrode of the auxiliary capacitor.

3. The array substrate according to claim 2 , wherein the shift register circuit in the first gate driving circuit comprises a driving transistor; the first electrode of the auxiliary capacitor is coupled to a gate electrode of the driving transistor through a first connection line; and the second electrode of the auxiliary capacitor is coupled to a signal output terminal of the shift register circuit through a second connection line.

4. The array substrate according to claim 2 , wherein there is only a passivation layer between the common electrode and the pixel electrode.

5. The array substrate according to claim 2 , wherein the common electrode and the pixel electrode are made of indium tin oxide.

6. The array substrate according to claim 2 , wherein the pixel electrode consists of strip-shaped electrodes and the common electrode is a planar electrode.

7. The array substrate according to claim 3 , wherein signal output terminals of the plurality of the shift register circuits are respectively coupled to the gate lines, one terminal of the second connection line is coupled to the second electrode of the auxiliary capacitor, and the other terminal of the second connection line is coupled to one of the gate lines.

8. The array substrate according to claim 3 , wherein the first connection line, the second connection line, and the gate lines are made of the same material in the same layer.

9. The array substrate according to claim 1 , wherein each of the plurality of the dummy sub-pixels comprises a thin film transistor, a first electrode of the thin film transistor is coupled to a data line, and a second electrode of the thin film transistor is floating.

10. The array substrate according to claim 1 , further comprising a plurality of auxiliary capacitors in the dummy sub-pixels respectively, wherein the auxiliary capacitors coupled to a same stage of shift register circuit are respectively located in a plurality of the dummy sub-pixels in the same row.

11. The array substrate according to claim 1 , wherein the plurality of the shift register circuits and the plurality of the dummy sub-pixels are at one side of the active area, and each of the plurality of the shift register circuits is coupled to one of the gate lines and auxiliary capacitors in the dummy sub-pixels of the same row.

12. The array substrate according to claim 11 , wherein the plurality of the dummy sub-pixels comprises two or three columns of the dummy sub-pixels.

13. The array substrate according to claim 1 , wherein both the plurality of the shift register circuits and the plurality of the dummy sub-pixels are at two sides of the active area, each of the plurality of the shift register circuits is coupled to h one of the gate lines and auxiliary capacitors in the dummy sub-pixels of the same row at the same side.

14. The array substrate according to claim 13 , wherein the plurality of the dummy sub-pixels comprises two or three columns of the dummy sub-pixels at the two sides of the active area respectively.

15. The array substrate according to claim 1 , further comprising a second gate driving circuit; wherein the plurality of the dummy sub-pixels are at two sides of the active area, the first gate driving circuit and the second gate driving circuit are at the two sides of the active area respectively;
two shift register circuits of the same stage in the first gate driving circuit and the second gate driving circuit respectively are coupled to two terminals of a same gate line respectively; and
each of the shift register circuits in the first gate driving circuit and the second gate driving circuit is coupled to auxiliary capacitors in the dummy sub-pixels of the same row at the same side.

16. A display apparatus comprising the array substrate according to claim 1 .

Assignees

• Boe Technology Group Co Ltd
• Hefei Xinsheng Optoelectronics Technology Co Ltd

Inventors

• Du Ruifang
• Ma Xiaoye

Classifications

• G09G3/36

  using liquid crystals · CPC title

• G02F1/1362 Primary

  Active matrix addressed cells {(G02F1/134336, G02F1/134363 take precedence)} · CPC title

• G09G2300/0408

  Integration of the drivers onto the display substrate · CPC title

• G09G2310/0286

  Details of a shift registers arranged for use in a driving circuit · CPC title

• G09G2300/0426

  Layout of electrodes and connections · CPC title