Display control method of LED backlight source

Abstract

The invention relates to an LED back light, which is arrayed and formed by a plurality of basic luminous units, wherein each basic luminous unit comprises a plurality of primary color LEDs and a white light LED. The invention also relates to a display control method to drive the back light, the method receives image data signal input, the image data signal is converted to a vision color space, after being added with a proportion of white content, the image data signal is converted back to a RGB color space, then, according to dynamic LED back light algorithm, the image data signal is converted to an LED driving signal needed by the LED back light and a compensating driving signal needed by a global liquid crystal display panel. Because the LED back light is relatively high in luminous efficiency and relatively low in cost, adds white proportion to the white light LED component with low heat sinking requirement to reduce saturation degree, and simultaneously adds brightness proportion at white picture and high-average brightness picture, thereby reducing the load of RGB three primary colors component, saving energy, reducing cost and prolonging the useful life of RGB LED.

Description

Display control method of LED backlight technical field The invention relates to a liquid crystal display device, in particular to a display control method of an LED backlight source in the liquid crystal display device. Background technique At present, the demand for liquid crystal display devices shows a strong growth momentum. With the increasing size of liquid crystal display devices, the proportion of backlight in the cost of liquid crystal display devices and the impact on the picture quality of liquid crystal display devices are also increasing. high. LED backlight technology, as one of the mainstream trends in the development of high-quality liquid crystal display device technology, is gaining more and more attention. LED backlight has many advantages: no toxic substance mercury, green and environmental protection; excellent color gamut display; good mechanical vibration stability; "dynamic LED backlight technology" can greatly improve the picture contrast (from ...

AI Technical Summary

Problems solved by technology

However, the cost of red, green, and blue primary color LED devices and the requirements for heat dissipation are relatively high, and the additional proportional components for color mixing will make the LED device work under high load, which is not good for the life and stability of the LED device.

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