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Driving device and method of liquid crystal display panel and display device

A liquid crystal display panel and drive device technology, applied to static indicators, instruments, etc., can solve problems such as display panel Waterfall

Active Publication Date: 2020-12-01
BOE TECH GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The embodiment of the present application provides a driving device and method of a liquid crystal display panel and a display device, which are used to solve the technical problem that the driving device in the prior art will cause poor water fall of the display panel

Method used

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  • Driving device and method of liquid crystal display panel and display device
  • Driving device and method of liquid crystal display panel and display device

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Embodiment Construction

[0036] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0037] Because light can change the conductor characteristics of the active layer in the display panel, resulting in a longer charging delay when charging with light than when there is no light, so the delay into the charging state is delayed, and the actual charging time is shorter. Short, the charging rate is insufficient, and the brightness of the display panel is low. At present, the brightness of the backlight module controlling the LCD panel is controlled by PWM waves, so the LCD panel is sometimes illuminated and sometimes not illuminated, which causes the LCD panel to cause horizontal block due to brightness differences, that is, poor water fall.

[0038] For example,...

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Abstract

The invention discloses a driving device and method of a liquid crystal display panel and a display device, which are used for solving the technical problem that a driving device in the prior art cancause poor Water fall of the display panel. The driving device comprises a power supply circuit used for providing a first control signal and a second control signal, wherein the potential of the first control signal is higher than that of the second control signal; a voltage selection module which is electrically connected with the power supply circuit and is used for selectively outputting a corresponding first control signal or a corresponding second control signal according to the duty ratio of a received brightness control signal for adjusting the light-emitting brightness of the backlight module; a level conversion circuit which is connected with the voltage selection module and is used for generating a corresponding clock signal according to the received first control signal or second control signal; and a line scanning drive circuit which is electrically connected with the level conversion circuit and used for generating scanning signals provided by the electrically connected grid lines according to the received clock signals.

Description

technical field [0001] The present application relates to the technical field of semiconductors, in particular to a driving device and method for a liquid crystal display panel and a display device. Background technique [0002] An important part of an electronic device to realize a display function is a display, and a liquid crystal display is a commonly used display. The liquid crystal display has a backlight module and a display module, and the driving circuit drives and adjusts the brightness of the backlight module. At present, a pulse width modulation (Pulse Width Modulation, PWM) method is used to adjust the brightness of the backlight, that is, the brightness of the backlight module is adjusted by changing the duty ratio of the PWM signal under a certain frequency condition. When the proportion of H in the high level of PWM is larger, the overall brightness of the display is higher; otherwise, the proportion of L in low level of PWM is larger, and the overall bright...

Claims

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Application Information

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IPC IPC(8): G09G3/34G09G3/36
CPCG09G3/3406G09G3/3413G09G3/3677
Inventor 梁云云周留刚戴珂尹晓峰方鹏军张霖熊玉龙孙建伟韩屹湛李涛瞿振林何浏李清汪俊权宇
Owner BOE TECH GRP CO LTD
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