Liquid crystal display panel repairing method and repairing system

Patent metadata

Field	Value
Publication number	US-9297074-B2
Application number	US-201414345896-A
Country	US
Kind code	B2
Filing date	Jan 13, 2014
Priority date	Dec 31, 2013
Publication date	Mar 29, 2016
Grant date	Mar 29, 2016

Abstract

The present invention provides a liquid crystal display panel repairing method and repairing system. The method includes: (1) providing a liquid crystal display panel, in which the liquid crystal display panel has a circuit that has a breaking site; and (2) applying laser chemical vapor deposition to form graphene on the liquid crystal display panel in such a way as to joint the breaking site. The liquid crystal display panel repairing method and repairing system of the present invention use laser chemical vapor deposition to form graphene on a breaking site to repair the breaking site. The process is simple and the result of repairing is good. Further, a common gas, such as methane, is used as a carbon source gas, making it favorable for environmental protection. Further, the number of layers of graphene so formed can be controlled by controlling whether to apply irradiation of the laser so as to achieve control of electrical conductivity of the graphene so formed and enhance the result of repairing. Further, the light spot of laser can be adjusted in regard to the radius thereof in order to control the resolution of graphene grown line and the optic path of the laser can be adjusted to allow the light spot to follow a predetermined path to heat selected areas of the substrate to deposit a desired graphene line or shape.

First claim

What is claimed is:

1. A liquid crystal display panel repairing method, comprising the following steps:
(1) providing a liquid crystal display panel, wherein the liquid crystal display panel comprises a circuit that has a breaking site, where two parts of the circuit are spaced from each other; and
(2) applying laser chemical vapor deposition to deposit carbon on the breaking site of the circuit so as to form graphene on the liquid crystal display panel as a connection to joint the two spaced parts of the circuit at the breaking site.

2. The liquid crystal display panel repairing method as claimed in claim 1 , wherein the liquid crystal display panel comprises a substrate, a data line and a scan line formed on the substrate, an insulation layer formed on the data line and the scan line, and a pixel electrode formed on the insulation layer, the breaking site being located on one of the data line, the scan line, and the pixel electrode.

3. The liquid crystal display panel repairing method as claimed in claim 2 , wherein the graphene is formed on the breaking site of the data line, the scan line, or the pixel electrode in order to electrically connect the data line, the scan line, or the pixel electrode.

4. The liquid crystal display panel repairing method as claimed in claim 2 , wherein the graphene is formed on the insulation layer, access holes being formed in the insulation layer to allow the graphene to extend through the access holes to electrically connect the data line or the scan line.

5. The liquid crystal display panel repairing method as claimed in claim 1 , wherein in step (2), a mixed gas of methane and hydrogen, methane and argon, or ethane and hydrogen or argon is used as the carbon source gas and a laser is used as an energy source to carry out the laser chemical vapor deposition.

6. The liquid crystal display panel repairing method as claimed in claim 5 , wherein in step (2), copper vapor is used as a catalyst to carry out the laser chemical vapor deposition.

7. The liquid crystal display panel repairing method as claimed in claim 1 further comprising a step (3), in which the graphene is exposed to an environment of dopant molecules to proceed with molecular doping of the graphene.

8. A liquid crystal display panel repairing method, comprising the following steps:
(1) providing a liquid crystal display panel, wherein the liquid crystal display panel comprises a circuit that has a breaking site, where two parts of the circuit are spaced from each other; and
(2) applying laser chemical vapor deposition to deposit carbon on the breaking site of the circuit so as to form graphene on the liquid crystal display panel as a connection to joint the two spaced parts of the circuit at the breaking site;
wherein the liquid crystal display panel comprises a substrate, a data line and a scan line formed on the substrate, an insulation layer formed on the data line and the scan line, and a pixel electrode formed on the insulation layer, the breaking site being located on one of the data line, the scan line, and the pixel electrode; and
wherein in step (2), a mixed gas of methane and hydrogen, methane and argon, or ethane and hydrogen or argon is used as the carbon source gas and a laser is used as an energy source to carry out the laser chemical vapor deposition.

9. The liquid crystal display panel repairing method as claimed in claim 8 , wherein the graphene is formed on the breaking site of the data line, the scan line, or the pixel electrode in order to electrically connect the data line, the scan line, or the pixel electrode.

10. The liquid crystal display panel repairing method as claimed in claim 8 , wherein the graphene is formed on the insulation layer, access holes being formed in the insulation layer to allow the graphene to extend through the access holes to electrically connect the data line or the scan line.

11. The liquid crystal display panel repairing method as claimed in claim 8 , wherein in step (2), copper vapor is used as a catalyst to carry out the laser chemical vapor deposition.

12. The liquid crystal display panel repairing method as claimed in claim 8 further comprising a step (3), in which the graphene is exposed to an environment of dopant molecules to proceed with molecular doping of the graphene.

Assignees

• Shenzhen China Star Optoelect
• Shenzhen China Star Optoelect

Inventors

• Lee Kuancheng
• Li Ji
• Chen Yahui

Classifications

• C23C16/26

  Deposition of carbon only · CPC title

• C23C16/483 Primary

  using coherent light, UV to IR, e.g. lasers · CPC title

• C23C16/047

  using irradiation by energy or particles · CPC title