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Display panel testing device and method

A display panel and test device technology, applied to static indicators, instruments, etc., can solve problems such as switch voltage threshold shift

Active Publication Date: 2017-08-25
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] When the display panel is turned on, it will display afterimages from the last shutdown
[0009] In addition, in the process of testing AMOLED (Active Matrix Organic Light Emitting Diode, active matrix organic light emitting diode panel), the driving switch circuit (for example, driving transistor) of the AMOLED will make the switching voltage threshold (Vth ) offset

Method used

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  • Display panel testing device and method
  • Display panel testing device and method

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Embodiment Construction

[0035] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention can be practiced.

[0036] refer to figure 1 , figure 2 and Figure 5 , figure 1 It is a schematic diagram of testing the display panel 101 to be tested by the display panel testing device 102 of the present invention, figure 2 for figure 1 A block diagram of the display panel testing apparatus 102 in, Figure 5 for figure 1 A schematic diagram of the signals received by the display panel under test in different states.

[0037] The display panel to be tested in the present invention may be a display panel such as LCD (Liquid Crystal Display, liquid crystal display panel), AMOLED (Active Matrix Organic Light Emitting Diode, active matrix organic light emitting diode panel).

[0038] The display panel testing device 102 of the present invention includes an interface circuit 201 and a testing circuit 202 . The d...

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Abstract

The invention discloses a display panel testing device and method. The display panel testing device comprises: an interface circuit for connecting with a display panel to be tested; a test circuit for connecting to the interface circuit, and the test circuit for generating a test signal when the display panel to be tested is in a test state, providing the test signal to the display panel to be tested through the interface circuit, and generating an adjustment signal when the display panel to be tested is in a predetermined state , and provide the adjustment signal to the display panel to be tested through the interface circuit; wherein, the adjustment signal is used to clean up the remaining information of the display panel to be tested when the display panel to be tested is in the predetermined state At least a partial afterimage signal. The invention can prevent the display panel to be tested from afterimages when it is turned on.

Description

[0001] 【Technical field】 [0002] The invention relates to the field of display panel testing, in particular to a display panel testing device and method. [0003] 【Background technique】 [0004] The traditional technical solution for testing the display panel is generally as follows: [0005] The test signal is provided to the display panel, and the display panel displays a picture corresponding to the test signal after receiving the test signal. [0006] However, in the process of testing the display panel, it is often necessary to perform power-on and power-off operations on the display panel. [0007] In practice, the inventors found that the prior art has at least the following problems: [0008] When the display panel is turned on, it will display afterimages from the last time it was turned off. [0009] In addition, in the process of testing AMOLED (Active Matrix Organic Light Emitting Diode, active matrix organic light emitting diode panel), the driving switch circu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/00
CPCG09G3/00G09G3/006
Inventor 王振岭黄泰钧
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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