Method for repairing bright spot defect of PDP (Plasma Display Panel) display screen by using laser light

A technology for bright spot defects and display screens, which is applied in the field of ion display manufacturing and repair, and can solve problems such as foreign matter contaminating the display

Inactive Publication Date: 2014-04-02
SICHUAN COC DISPLAY DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the manufacturing process of plasma display screens, due to uncontrollable factors such as process errors, foreign matter contamination, and equipment abnormalities, point defects will inevitably appear in the display screen.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The technical idea of ​​the present invention is to repair the bright and bright spots found during the light inspection after the PDP display is completed, so as to turn them into dark spots, so as not to affect the display effect and improve the screen level.

[0026] The technical solution of the present invention will be described in detail below.

[0027] The technical method adopted by the present invention is to add a laser unit and a lifting mechanism on the hardware basis of the existing PDP lighting inspection machine.

[0028] The PDP lighting inspection machine is an automatic device that automatically transmits the PDP panel, performs lighting on the panel, and performs photoelectric and optical parameter inspection operations. Using the PDP lighting inspection machine, before the PDP panel is powered on, the electrodes of the PDP panel on the clamp of the inspection table and the electrodes of the PDP panel are aligned visually.

[0029] In the present in...

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PUM

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Abstract

The invention discloses a method for repairing the bright spot defect of a PDP (Plasma Display Panel) display screen by using laser light. In the method, a PDP lighting checking machine is used, and is provided with a movable laser unit; the PDP lighting checking machine is used for automatically conveying the PDP display screen and checking the bright spot defect of the PDP display screen in a lighting way; a PDP panel is provided with an ITO (Indium Tin Oxide) conducting layer. The method is simple and practical, and only the laser unit needs to be additionally arranged on the PDP lighting checking machine and is designed to be movable. A laser is used for repairing the bright spot defect of a plasma display device. The laser emits laser light of specific wavelength, speed and power, and ITO is burnt out in cooperation with a matched repair area pattern without influencing a glass substrate and the overall display of a plasma television.

Description

technical field [0001] The invention relates to the technical field of plasma display manufacturing and repairing, in particular to a method for repairing bright and bright point defects of a PDP display by using a laser. Background technique [0002] Plasma display (PDP) has the advantages of vivid color, good color effect, wide viewing angle, long life, etc. At the same time, it has fast response speed, no tailing, no harmful radiation, and is more conducive to eye health. It is one of the mainstream flat panel display technologies at present. one. However, in the manufacturing process of plasma display screens, due to uncontrollable factors such as process errors, foreign matter pollution, and equipment abnormalities, point defects inevitably appear in the display screens. Point defects are generally divided into two categories, namely bright point defects and dark point defects. In actual production, bright point defects are the majority, and the human eye is more sensi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J9/50
CPCY02W30/82
Inventor 杨高刘洋李新亮
Owner SICHUAN COC DISPLAY DEVICES
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