Display screen product detection method and device

A detection method and display technology, which can be used in measuring devices, measuring electricity, measuring electrical variables, etc., and can solve problems such as detecting DotMura problems, end-customer market customer influence, and product quality risks.

Active Publication Date: 2018-11-20
TRULY HUIZHOU SMART DISPLAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Defects caused by Dot Mura cannot be detected by conventional quick inspection methods at room temperature. When defective products are made into modules, they will not appear until they experience harsh conditions such as high temperature and low

Method used

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  • Display screen product detection method and device
  • Display screen product detection method and device
  • Display screen product detection method and device

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Embodiment Construction

[0047] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0048] Although preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0049] The invention provides a display screen product detection method, which can quickly detect the Dot Mura problem of the display screen at normal temperature, reduce high temperature and low temperature verification costs, and reduce the risk of product failure.

[0050] The technical solutions of the embodimen...

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Abstract

The invention discloses a display screen product detection method and device. The method comprises steps that a to-be-detected display screen is accessed; a test parameter of a test device is set to be a set value that makes voltage current transfer characteristic curves of the normal gray level position and the abnormal gray level position of the display screen significantly different; after thetest device starts according to the test parameter, according to a gray level uneven frame and a dot matrix arrangement form displayed in the gray level state, that the display screen contains dot spots is identified. The method is advantaged in that a Dot Mura problem of the display screen can be quickly detected under the normal temperature, high-temperature and low-temperature verification costis reduced, and the risk of bad products is reduced.

Description

technical field [0001] The invention relates to the field of flat panel display technology, in particular to a detection method and a detection device for a display screen product. Background technique [0002] With the development of display technology, various display products appear, such as LCD (Liquid Crystal Display, liquid crystal display) and OLED (Organic Light Emitting Diode, organic light emitting diode) displays. In recent years, LCD has developed vigorously, and the types of TFT (Thin Film Transistor, thin film transistor) LCD products are also increasing day by day, such as TN (Twisted Nematic, twisted nematic) type, IPS (In-Plane Switching, plane conversion) type, VA (Vertical Alignment, vertical alignment) type, FFS (Fringe Field Switching, fringe field switching) type, ADS (Advanced SuperDimension Switch, advanced super-dimensional field switching) type, etc. [0003] Among them, the FFS structure product rotates the liquid crystal plane through the fringe ...

Claims

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Application Information

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IPC IPC(8): G09G3/00G01R19/165G01R19/00G01R31/02
CPCG01R19/00G01R19/16533G09G3/006G01R31/50
Inventor 徐阳刘力明黄伟东李建华
Owner TRULY HUIZHOU SMART DISPLAY
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