LCD panel and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-9638943-B2
Application number	US-201414410391-A
Country	US
Kind code	B2
Filing date	Oct 17, 2014
Priority date	Jul 16, 2014
Publication date	May 2, 2017
Grant date	May 2, 2017

Abstract

An LCD panel, which includes liquid crystal cells, a TFT testing unit, and a gate, source, and drain electrode testing pad, is provided. The TFT testing unit includes three electrode testing wires, each of which has one end connected to a gate, source, or a drain electrode, and the other end connected to a corresponding one of the three electrode testing pads. A manufacture method for the LCD panel is also provided. Electrical measurements of the TFT in the liquid crystal cell is realized.

First claim

What is claimed is:

1. An LCD panel, comprising: at least one testing interface having a source electrode testing pad, a drain electrode testing pad, and a gate electrode testing pad, a plurality of liquid crystal cells, and at least one TFT testing unit disposed close to the testing interface, wherein the TFT testing unit comprises:
a TFT provided with a source electrode, a drain electrode, and a gate electrode;
a sealant surrounding the TFT and combining an array substrate and a CF substrate;
a gate electrode testing wire, having one end connected to the gate electrode, and the other end passing through the sealant to connect to the gate electrode testing pad;
a source electrode testing wire having one end connected to the source electrode, and the other end passing through the sealant to be connected to the source electrode testing pad;
a drain electrode testing wire having one end connected to the drain electrode, and the other end passing through the sealant to be connected to the drain electrode testing pad; and
liquid crystal molecules provided between the array substrate and the CF substrate for simulating an environment of the liquid crystal cells.

2. The LCD panel as claimed in claim 1 , wherein the TFT testing unit and the liquid crystal cells grow together.

3. The LCD panel as claimed in claim 1 , wherein the source electrode testing pad, the drain electrode testing pad, and the gate electrode testing pad are all metal sheets.

4. An LCD panel, comprising; a plurality of liquid crystal cells, at least one TFT testing unit, a source electrode testing pad, a drain electrode testing pad, and a gate electrode testing pad, wherein the TFT testing unit comprises:
a TFT provided with a source electrode, a drain electrode, and a gate electrode;
a sealant surrounding TFT and combining an array substrate and a CF substrate;
a gate electrode testing wire, having one end connected to the gate electrode, and the other end passing through the sealant to connect to the gate electrode testing pad;
a source electrode testing wire, having one end connected to the source electrode, and the other end passing through the sealant to connect to the source electrode testing pad;
a drain electrode testing wire, having one end connected to the drain electrode, and the other end passing through the sealant to connect to the drain electrode testing pad.

5. The LCD panel as claimed in claim 4 , wherein the TFT testing unit is disposed on one side close to the source electrode testing pad, the drain electrode testing pad, and the gate electrode testing pad.

6. The LCD panel as claimed in claim 4 , wherein the TFT testing unit further comprises liquid crystal molecules, provided between the array substrate and the CF substrate, for simulating an environment of the liquid crystal cells.

7. The LCD panel as claimed in claim 6 , wherein the TFT testing unit and the liquid crystal cells grow together.

8. The LCD panel as claimed in claim 4 , wherein the source electrode testing pad, the drain electrode testing pad, and the gate electrode testing pad are all metal sheets.

Assignees

• Shenzhen China Star Optoelect

Inventors

• Fu Yanfeng

Classifications

• G02F1/1368

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

• G02F2001/136254

  Physics · mapped topic

• G09G2330/12

  Test circuits or failure detection circuits included in a display system, as permanent part thereof · CPC title

• G02F1/133514

  Colour filters · CPC title

• G02F1/1333

  Constructional arrangements; {Manufacturing methods}(G02F1/135, G02F1/136 take precedence) · CPC title