Backlight module and liquid crystal display device

Abstract

The embodiments of the invention provide a liquid crystal display device, and relates to the technical field of liquid crystal displays. According to the embodiments of the invention, a liquid crystal display device is dynamically controlled within a backlight sub-area controlled dynamically by the sub-area backlight. A plurality of excitation-point light sources serve as excitation light sources of a surface light source and the quantum dot material in a quantum dot packaging part along the light emergent direction of the above light sources is excited. Between the plurality of excitation-point light sources and the quantum dot packaging part, a light selection part is arranged to select the transmission of the excitation light sources sent from the light sources and reflect the excitation light generated through exciting the quantum dot material. In this way, the back light reflected back by the quantum dot packaging part can be reflected by the light selection part, so that the interference of the back light on a white light source in the adjacent area can be avoided. Therefore, the white light of the white light source in the backlight sub-area is formed through only mixing up the excitation light generated by the point light sources in the backlight sub-area with the motivated light of the above point light sources generated through exciting the excitation light of the point light sources.

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to liquid crystal display equipment and a backlight module. Background technique [0002] A liquid crystal display device (Liquid Crystal Display, LCD for short) generally adopts a dynamic backlight modulation technology to control the brightness of the backlight, which can achieve image quality effects such as energy saving and improvement of display contrast. Such as figure 1 It is a schematic structural diagram of dynamic backlight modulation technology in liquid crystal display in the prior art. The liquid crystal display device includes an image processing unit that receives an input image signal and acquires backlight data according to the grayscale brightness of the image signal. On the one hand, according to the specifications of the predetermined display panel The format of the image signal is converted and output to the timing controller (TCON) in the liquid crystal ...

AI Technical Summary

Problems solved by technology

[0008] The embodiment of the present invention provides a liquid crystal display device, which can effectively solve the problem of random color shift in each display screen in the partition dynamic backlight control liquid crystal display device using quantum dot technology to provide backlight

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