Backlight die set, display device and driving method thereof

Abstract

The embodiment of the invention provides a backlight die set, a display device and a driving method thereof, and aims to increase the transmission rate of a display panel. The backlight die set comprises a light guide plate, a plurality of single-color light sources with different colors on light incoming surface of the light guide plate, a light path adjusting part, and a plurality of light extracting gratings which are arranged in an array form, wherein the light path adjusting part is positioned above the single-color light sources, and light emitted by the single-color light source of eachcolor can enter the light guide plate by different angles through the light path adjusting part, and the light entering the light guide plate can be completely reflected and transmitted; the light extracting gratings are positioned on the light outgoing surface of the light guide plate, and the light in the light guide plate can be extracted by the same preset angle. According to the backlight die set, color filter sheets in the corresponding display panel can be saved, so that the transmission rate of the display panel can be increased.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight module, a display device and a driving method thereof. Background technique [0002] The backlight module can provide a light source for a Liquid Crystal Display (LCD). The backlight module is mainly composed of a light source, a light guide plate, an optical diaphragm, and a uniform light layer. The backlight module has the characteristics of high brightness, long life, and uniform light emission; the backlight module is divided into side-light type and direct-light type according to the distribution position of the light source. [0003] The traditional LCD display technology generally uses the lower polarizer to polarize the light emitted by the backlight module, and then modulates it through the liquid crystal layer. The modulated light passes through the color filter to produce colors, and finally enters the upper polarizer Realize the basic display function. ...

AI Technical Summary

Problems solved by technology

[0006] from figure 1 It can be seen that after the light emitted by the backlight module 101 passes through the lower polarizer 102, the transmittance of the light decreases from 100% to 42%, and then the light passes through the array substrate 103, the color filter 104 and the upper polarizer 105 in sequence, The transmittance of the last emitted light is only 9%, which leads to high power consumption of LCD backlight

[0007] To sum up, the light transmittance of LCD panels in the prior art is low, which limits the application of LCD in some special scenarios (such as transparent display)

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