Display panel, method for testing bad pixels of display panel, and display device

A display panel and pixel technology, applied in static indicators, instruments, etc., can solve problems such as poor reliability and achieve good reliability.

Pending Publication Date: 2022-04-05
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented describes an improved testing process used with electronic devices such as displays or screens. It involves arranging multiple different types of tests within one area called the screen's space where it faces outwardly towards users (the user). These tests include those related to defective pixels found during manufacturing processes. By adjusting these tests according to their specific structures, they ensure reliable detection even when there may have other problems affecting them.

Problems solved by technology

This patented technical problem addressed by this patents relates to improving testing accuracy during production processes where multiple types of faults can occur simultaneously due to various factors such as variations or errors made while setting up tests with these devices.

Method used

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  • Display panel, method for testing bad pixels of display panel, and display device
  • Display panel, method for testing bad pixels of display panel, and display device
  • Display panel, method for testing bad pixels of display panel, and display device

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Embodiment Construction

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

[0048] The terms used in the embodiment section of the present disclosure are only for explaining the embodiments of the present disclosure, and are not intended to limit the present disclosure. Unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present disclosure shall have common meanings understood by those skilled in the art to which the present disclosure belongs. "First", "second" or "third" and similar words used in the specification and claims of this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components . Likewise, words like "a" or "one" do not denote a limitation in quantity, but indicate that there is at least one. Words such

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Abstract

The invention provides a display panel, a method for testing bad pixels of the display panel and a display device, and belongs to the technical field of display. A test element group in the display panel comprises three test circuits, namely a first test circuit, a second test circuit and a third test circuit. Wherein the first test circuit and the second test circuit are both coupled with the third test circuit to control the third test circuit to generate a first test signal, the first test signal can form a second test signal through the second test circuit, and the second test signal is transmitted to the test equipment through the test probe. Therefore, the structure of each test circuit included in the test element group can be flexibly set based on the structure of the pixel circuit, so that the second test signal output to the test equipment by the test element group is close to the driving signal output to the light-emitting element by the pixel circuit; therefore, the test device can reliably determine whether the pixel circuit is abnormal based on the second test signal. That is, the reliability of testing the bad pixels in the display panel by using the test element group is good.

Description

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Claims

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Application Information

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Owner BOE TECH GRP CO LTD
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