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LED backlight module and its dynamic dimming method

A technology of LED backlights and backlight modules, applied in optics, nonlinear optics, static indicators, etc., can solve problems such as waste of resources, calculation, and complexity, and achieve the effects of reducing power consumption, improving quality, and increasing response speed

Active Publication Date: 2015-12-02
SHENZHEN TCL NEW-TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the shortcomings of the prior art above, the purpose of the present invention is to provide an LED backlight module and its dynamic dimming method to solve the problems of waste of resources and complex calculations in the prior art

Method used

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  • LED backlight module and its dynamic dimming method
  • LED backlight module and its dynamic dimming method
  • LED backlight module and its dynamic dimming method

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Embodiment Construction

[0030] The present invention provides an LED backlight module and its dynamic dimming method. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0031] see figure 1 , which is a flow chart of the dynamic dimming method of the LED backlight module of the present invention, as shown in the figure, the method includes:

[0032] Divide the LED lights in the LED backlight module into multiple backlight areas;

[0033] Measure and store the luminance values ​​of each backlight area affected by the rest of the backlight areas;

[0034] Determine the brightness value required by each backlight area according to the image display screen data;

[0035] Accor...

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Abstract

The invention discloses a light emitting diode (LED) backlight module and a dynamic dimming method thereof. The dynamic dimming method comprises that LED lamps in the LED backlight module are separated into a plurality of backlight areas; the luminance influence value, caused by other backlight areas, of each backlight area is measured and stored; the luminance value required by each backlight area is confirmed according to image display frames; the luminance influence value, caused by other backlight areas, of each backlight area needing dimming is subtracted from the luminance value required by each backlight area needing dimming, and the luminance of each backlight area, actually required to be output, is confirmed; and driving of the backlight lamp groups is regulated, and the output luminance of corresponding backlight lamp groups is regulated to complete area dimming. The LED backlight module and the dynamic dimming method thereof enable the backlight lamps in each backlight area to be regulated according to the actually-required output luminance of each backlight area, so that power consumption of an LED liquid crystal display module is reduced, and energy is saved.

Description

technical field [0001] The invention relates to liquid crystal backlight dimming technology, in particular to an LED backlight module and a dynamic dimming method thereof. Background technique [0002] At present, the backlight source of the mainstream LCD TV module in the market is in the brightest state when the LCD TV is working, and the brightness of the backlight source remains unchanged during the use of the LCD TV; The brightness is adjusted by means of transmittance, so that when displaying a dark picture, the backlight is still in the brightest state, resulting in a serious waste of energy. [0003] After research, Localdimming (dynamic dimming technology) can change the brightness of the backlight source according to the brightness of the display screen. The use of Localdimming technology in LCD TV modules can increase picture contrast, improve image quality, and reduce power consumption and save energy. Therefore, Localdimming technology is running more and more ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/34G02F1/13357
Inventor 赵勇钟燮和康婷霞
Owner SHENZHEN TCL NEW-TECH CO LTD
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