Black screen prevention circuit and method, driving circuit and display device

A driving circuit and circuit technology are applied in the fields of display devices, driving circuits, anti-black screen circuits and methods, which can solve problems such as black screen, and achieve the effect of avoiding black screen phenomenon and triggering overload protection.

Active Publication Date: 2019-08-16
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Current liquid crystal display products, especially large-size liquid crystal display products, are prone to black screen phenomenon when starting up or at low temperature

Method used

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  • Black screen prevention circuit and method, driving circuit and display device
  • Black screen prevention circuit and method, driving circuit and display device
  • Black screen prevention circuit and method, driving circuit and display device

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0035] In order to facilitate the understanding of the solutions provided in this application. The following is a brief description of the display:

[0036] A display includes a display panel and a driving circuit. Wherein, the function of the display panel is to emit light to display patterns, and the driving circuit is used to provide signals required for display by the display panel, and control the operation of the display panel through these signals.

[0037] The structure of the display panel is also different based on the display type. Taking a liquid crystal display as an example, the display panel includes an array substrate, a color filter substrate arranged in a box with the array substrate, and a liquid crystal layer sandw...

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PUM

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Abstract

The invention discloses a black screen prevention circuit and method, a driving circuit and a display device, and belongs to the technical field of display. The black screen prevention circuit is applied to a driving circuit of a display. The driving circuit comprises an integrated power supply management circuit, a level conversion circuit and a counter control register, and the black screen prevention circuit comprises a determination sub-circuit which is configured to determine whether more than two clock signals exist in multiple clock signals output by the counter control register and areboth effective levels; and a control sub-circuit which is configured to cut off the grid electrode high level signal and the grid electrode low level signal output to the level conversion circuit bythe integrated power supply management circuit when the determination sub-circuit determines that more than two paths of clock signals exist at the same time as effective levels, so as to avoid the black screen phenomenon when the liquid crystal display is started.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an anti-black screen circuit and method, a driving circuit, and a display device. Background technique [0002] With the development of display technology and the improvement of people's material level, the requirements for all aspects of the display are getting higher and higher. For existing products, eliminating various display defects is an important way to improve product quality. Current liquid crystal display products, especially large-size liquid crystal display products, are prone to black screen phenomenon when power on or low temperature. Contents of the invention [0003] Embodiments of the present invention provide an anti-black screen circuit and method, a driving circuit, and a display device, which can solve the problem of black screen when starting up liquid crystal display products. Described technical scheme is as follows: [0004] On the one hand, an emb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/20G09G3/36
CPCG09G3/20G09G3/36
Inventor 翁彬许炜泽翁祖伟赖意强
Owner BOE TECH GRP CO LTD
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