Liquid crystal array substrate, electronic device, and method for testing liquid crystal array substrate

Patent metadata

Field	Value
Publication number	US-2016124279-A1
Application number	US-201313983777-A
Country	US
Kind code	A1
Filing date	Jun 30, 2013
Priority date	Jun 19, 2013
Publication date	May 5, 2016
Grant date	—

Abstract

A liquid crystal (LC) array substrate includes a number of pixel regions, each pixel region includes a main region, a sub-region, and an adjustment thin film transistor (TFT), the adjustment TFT adjusts a ratio of voltage of the main region and the sub-region to achieve a LCS design. The main region comprises a first TFT and a main region array common electrode lead wire, the sub-region comprises a second TFT and a sub-region array common electrode lead wire, and the main region array common electrode lead wire and the sub-region array common electrode lead wire are electrically isolated. The main region array common electrode lead wire of all pixel regions of the LC array substrate are connected to a main region conductive pad, the sub-region array common electrode lead wire of all pixel regions of the LC array substrate are connected to a sub-region conductive pad.

First claim

What is claimed is:

1 . A liquid crystal (LC) array substrate, comprising a plurality of pixel regions, each pixel region comprises a main region, a sub-region, and an adjustment thin film transistor (TFT), the adjustment TFT is configured to adjust a ratio of voltage of the main region and the sub-region to achieve a LCS design;
wherein, the main region comprises a first TFT and a main region array common electrode lead wire, the sub-region comprises a second TFT and a sub-region array common electrode lead wire, and the main region array common electrode lead wire and the sub-region array common electrode lead wire are electrically isolated; a gate of the first TFT is connected to a first scan line, a source of the first TFT is connected to a data line, a drain of the first TFT is connected to one pixel electrode and is coupled to the main region array common electrode lead wire; a gate of the second TFT is connected to the first scan line, a source of the second TFT is connected to the data line, a drain of the second TFT is connected to one pixel electrode and is coupled to the sub-region array common electrode lead wire; a source of the adjustment TFT is coupled to the drain of the first TFT, a drain of the adjustment TFT is electrically connected to the drain of the second TFT, a gate of the adjustment TFT is connected to a second scan line; the main region array common electrode lead wire of all pixel regions of the LC array substrate are connected to a main region conductive pad, the sub-region array common electrode lead wire of all pixel regions of the LC array substrate are connected to a sub-region conductive pad.

2 . The LC array substrate of claim 1 , wherein the first scan line is configured to produce an on signal or an off signal to control the first TFT to turn on or off accordingly, the data line is configured to input a data driving signal to the first TFT when the first TFT is turned on, thus controlling a display of the main region.

3 . The LC array substrate of claim 2 , wherein the first scan line is further configured to produce the on signal or the off signal to control the second TFT to turn on or off accordingly.

4 . The LC array substrate of claim 3 , wherein the data line is further configured to input the data driving signal to the second TFT when the second TFT is turned on, thus controlling the display of the sub-region.

5 . An electronic device, comprising a liquid crystal (LC) array substrate, the LC array substrate comprises a plurality of pixel regions, each pixel region comprises a main region, a sub-region, and an adjustment thin film transistor (TFT), the adjustment TFT is configured to adjust a ratio of voltage of the main region and the sub-region to achieve a LCS design;
wherein, the main region comprises a first TFT and a main region array common electrode lead wire, the sub-region comprises a second TFT and a sub-region array common electrode lead wire, and the main region array common electrode lead wire and the sub-region array common electrode lead wire are electrically isolated; a gate of the first TFT is connected to a first scan line, a source of the first TFT is connected to a data line, a drain of the first TFT is connected to one pixel electrode and is coupled to the main region array common electrode lead wire; a gate of the second TFT is connected to the first scan line, a source of the second TFT is connected to the data line, a drain of the second TFT is connected to one pixel electrode and is coupled to the sub-region array common electrode lead wire; a source of the adjustment TFT is coupled to the drain of the first TFT, a drain of the adjustment TFT is electrically connected to the drain of the second TFT, a gate of the adjustment TFT is connected to a second scan line; the main region array common electrode lead wire of all pixel regions of the LC array substrate are connected to a main region conductive pad, the sub-region array common electrode lead wire of all pixel regions of the LC array substrate are connected to a sub-region conductive pad.

6 . The electronic device of claim 5 , wherein the first scan line is configured to produce an on signal or an off signal to control the first TFT to turn on or off accordingly, the data line is configured to input a data driving signal to the first TFT when the first TFT is turned on, thus controlling a display of the main region.

7 . The electronic device of claim 6 , wherein the first scan line is further configured to produce the on signal or the off signal to control the second TFT to turn on or off accordingly.

8 . The electronic device of claim 7 , wherein the data line is further configured to input the data driving signal to the second TFT when the second TFT is turned on, thus controlling the display of the sub-region.

9 . The electronic device of claim 5 , wherein the electronic device is a liquid crystal display (LCD) or a LCD television.

10 . A method for testing a liquid crystal array substrate, comprising:
controlling a first TFT and the second TFT of each pixel region to turn off by inputting off signal via a scan line; applying a first voltage to a main region conductive pad and applying a second voltage to a sub-region conductive pad, wherein, the main region conductive pad is connected to a main region array common electrode lead wire of all pixel regions of the LC array substrate, the sub-region conductive pad is connected to a sub-region array common electrode lead wire of all pixel regions of the LC array substrate; the main region array common electrode lead wire and the sub-region array common electrode lead wire are electrically isolated; detecting whether the voltage of the main region is equal to the voltage of the sub-region; determining the main region and the sub-region are short circuited if the voltage of the main region is equal to the voltage of the sub-region.

11 . The method of claim 10 , further comprising: determining the main region and the sub-region are not short circuited if the voltage of the main region is not equal to the voltage of the sub-region.

12 . The method of claim 10 , wherein the step of applying a first voltage to a main region conductive pad and applying a second voltage to a sub-region conductive pad comprises: applying a high voltage to the main region conductive pad and applying a low voltage to the sub-region conductive pad.

13 . The method of claim 10 , wherein the step of applying a first voltage to a main region conductive pad and applying a second voltage to a sub-region conductive pad comprises: applying a low voltage to the main region conductive pad and applying a high voltage to the sub-region conductive pad.

14 . The method of claim 10 , further comprising: repairing the pixel region which is short-circuited.

Assignees

• Shenzhen China Star Optoelect

Inventors

• Yao Xiaohui
• Hsu Je Hao

Classifications

• G09G3/3659 Primary

  the addressing of the pixel involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependant on signal of two data electrodes · CPC title

• G02F1/136286 Primary

  Wiring, e.g. gate line, drain line · CPC title

• G02F1/134309

  characterised by their geometrical arrangement · CPC title

• G02F2001/136254

  Physics · mapped topic

• G02F1/1368

  in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} · CPC title