Back light module and liquid crystal display device

Abstract

A backlight module provides a colored surface light source, which is mainly composed of a surface light source, a light-shielding matrix and a fluorescent layer. Wherein, the light-shielding matrix is ​​arranged on the surface of the surface light source, and the light-shielding matrix has a plurality of lattice points exposing the surface of the surface light source, and the fluorescent layer is arranged in these lattice points. Through the fluorescent layer, the light emitted by the surface light source can be colored. In addition, the present invention further proposes a liquid crystal display, which is mainly composed of the above-mentioned backlight module, a polarizing film, an electrode layer, a matrix substrate and a liquid crystal layer. Wherein, the polarizing film is disposed on the fluorescent layer, the electrode layer is disposed on the polarizing film, the matrix substrate is disposed above the backlight module, and the liquid crystal layer is disposed between the matrix substrate and the backlight module.

Description

technical field [0001] The present invention relates to a backlight module (Back Light Module) and a liquid crystal display (Liquid Crystal Display, LCD), and in particular to a backlight module capable of providing a colored surface light source and a liquid crystal display using the backlight module. Background technique [0002] In order to match the mode of modern life, the volume of video or image devices tends to be thinner and lighter day by day. Although the traditional cathode ray display (CRT) still has its advantages, due to the structure of the internal electronic cavity, the display is bulky and takes up space, and there are still problems such as radiation damage to the eyes when displaying. Therefore, the flat panel display (Flat Panel Display), such as liquid crystal display (LCD), organic light-emitting display (OLED) or plasma display (Plasma Display Panel, PDP), developed in conjunction with optoelectronic technology and semiconductor manufacturing technol...

AI Technical Summary

Problems solved by technology

[0010] However, since the production of color filter films is cumbersome and the price is not cheap, the overall price of liquid crystal displays cannot be further reduced.

In addition, because the configuration of the color filter film and black matrix on the substrate often has unevenness, the color filter must be covered with a flat layer on the color filter film and black matrix ( over coating) to achieve the purpose of surface flattening, which will increase the complexity of color filter production and is also a burden in terms of cost

In addition, since most of the current liquid crystal displays use color filter substrates and thin film transistor matrix substrates to sandwich the liquid crystal layer, this design structure will limit the development of miniaturization of liquid crystal displays

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