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Backlight module driving method and driving structure, display device

A technology of backlight module and driving method, applied in static indicators, instruments, etc., can solve problems such as unsatisfactory effects

Active Publication Date: 2021-08-24
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The current method of being scanned by light can improve smear to a certain extent, but the effect is not very ideal

Method used

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  • Backlight module driving method and driving structure, display device
  • Backlight module driving method and driving structure, display device
  • Backlight module driving method and driving structure, display device

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Embodiment Construction

[0027] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, but not to limit the present invention.

[0028] The smear defect of liquid crystal display device is mainly caused by two reasons:

[0029] (1) Response time of liquid crystal molecules in liquid crystal display devices: When the response time of liquid crystal molecules is greater than the frame period of the moving image, the two frames before and after the moving image will overlap, resulting in smear and blurring of the moving image. Generally, it can be solved by improving the response time of the liquid crystal molecules or making the driving module driving the liquid crystal display panel adopt an overdrive technology to control the response time of the liquid crystal molecules in advance.

[0030] (2) ...

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Abstract

The present invention provides a method for driving a backlight module. The backlight module is used to provide backlight for a liquid crystal display panel. The display area of ​​the liquid crystal display panel is divided into a plurality of sub-display areas. A plurality of sub-display regions correspond to a plurality of sub-light-emitting regions one-to-one, and a light source is arranged in each sub-light-emitting region; the driving method of the backlight module includes the following steps in each display cycle: obtaining liquid crystal molecules in each sub-display region The moment when the response is completed under the control of the display drive signal; according to the moment when the liquid crystal molecules in the sub-display area complete the response, the light source in the corresponding sub-light-emitting area is driven to emit light, and the light source in the sub-light-emitting area is turned on no later than the corresponding sub-display The moment when the liquid crystal molecules in the sub-region complete the response; wherein, the light-emitting stages of the light sources in different sub-light-emitting regions do not overlap. The invention also provides a driving structure of the backlight module and a display device. The invention can better improve the smear phenomenon of the display device.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a driving method and driving structure of a backlight module, and a display device. Background technique [0002] There are many defects in liquid crystal display devices that need to be improved, and dynamic picture smear is one of the main defects to be improved. Moving Picture Response Time (MPRT) is a criterion for evaluating dynamic picture smear. [0003] At present, black insertion technology is mainly used to reduce the response time of dynamic pictures, thereby improving the smear phenomenon of dynamic pictures. The black insertion method can be realized in two ways, one is to insert the black frame, and the other is to scan the backlight. Among them, in the backlight scanning mode, the backlight source is divided into a plurality of sub-backlight sources, and each sub-backlight source corresponds to an area of ​​the display panel. When the display panel is dri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/34
CPCG09G3/342
Inventor 谷其兵孟晨陈相逸郝卫孙伟陈明
Owner BOE TECH GRP CO LTD