Backlight and control method and display device thereof

A control method and backlight technology, applied in energy-saving control technology, optics, nonlinear optics, etc., can solve the problems affecting the picture quality and the transmittance of the display panel, and achieve the effect of avoiding the impact of the picture quality.

Inactive Publication Date: 2016-03-16
BOE TECH GRP CO LTD +1
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Problems solved by technology

[0003] However, since the color temperature of the current backlight source has been fixed during production, the color temperature adjustment of the liquid crystal display is mainly through the software adjustment of the corresponding sub-pixel units of R (red), G (green), and B (blue) in the liquid crystal display panel. The deflection of liquid crystal molecules is realized, and this adjustment method will have a great impact on the transmittance of the liquid crystal display panel. Usually, when the color temperature changes by about 1000K, the transmittance can drop by 10%, which seriously affects the overall picture quality

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  • Backlight and control method and display device thereof
  • Backlight and control method and display device thereof
  • Backlight and control method and display device thereof

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[0034] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0035] An embodiment of the present invention provides a backlight, including:

[0036] At least two light sources with different color temperatures;

[0037] The control module is used to adjust the color temperature of the backlight by controlling the driving current of the light emitting source of each color temperature.

[0038] The backlight provided by the embodiment of the present invention can realize the adjustable color temperature of the backlight by setting at least two light-emitting sources with different color temperatures and controlling the driving current of the light-emitting sources of each color temperature through the control module. When the backlig...

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Abstract

The invention provides backlight and a control method and a display device thereof, and the backlight comprises at least two luminous sources of which the color temperatures are different; a control module used for controlling drive current of a luminous source of each color temperature so as to adjust the color temperature of the backlight. According to the backlight disclosed by the invention, adjustable color temperature of the backlight can be realized by arranging the at least two luminous sources of which the color temperatures are different, and by respectively controlling the drive current of the luminous source of each color temperature through the control module, when the backlight is applied to a liquid crystal display, the color temperature of the liquid crystal display can be changed under the situation that the transmittance of a liquid crystal display panel is not changed, and the influence on the image quality can be avoided.

Description

technical field [0001] The invention relates to the display field, in particular to a backlight source, a control method thereof, and a display device. Background technique [0002] Liquid crystal displays have the advantages of small size, low power consumption, and low radiation. They have been widely used in computer monitors, notebook computers, mobile phones, and LCD TVs. Existing liquid crystal displays mainly include liquid crystal display panels and backlight sources. Because liquid crystal display panels It does not emit light by itself, so it needs to rely on the backlight to provide light for it. [0003] However, since the color temperature of the current backlight source has been fixed during production, the color temperature adjustment of the liquid crystal display is mainly through the software adjustment of the corresponding sub-pixel units of R (red), G (green), and B (blue) in the liquid crystal display panel. The deflection of liquid crystal molecules is ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/34
CPCG09G3/3413G09G2320/0666G09G2360/144H05B45/22Y02B20/40G02F1/1336H05B47/11
Inventor 董瑞君孙海威王晨如陈丽莉
Owner BOE TECH GRP CO LTD
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