Liquid crystal display

Abstract

The invention provides a liquid crystal display. The liquid crystal display comprises a backlight module and a liquid crystal display panel arranged on the backlight module; the backlight module comprises a luminous source, quantum dot film arranged on the luminous source, a diffusion layer arranged on the quantum dot film and brightness enhancement film arranged on the diffusion layer, wherein the luminous angle of the quantum dot film is greater than that of the luminous source, therefore, after the light emitted by the luminous source passes through the quantum dot film and then excites quantum dots to convert the light into white light, the luminous viewing angle is enlarged, thereby being conductive to improving the display effect of the backlight module, and reducing an OD value of the backlight module; in addition, when the white light is uniformly distributed through the diffusion layer and then reaches the brightness enhancement film, the brightness enhancement film can reflect partial light to the quantum dot film, and the quantum dots are re-excited to form the white light, thereby improving the luminous efficiency of the quantum dots; and the re-excited white light canfurther improve the display effect of the backlight module.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a liquid crystal display. Background technique [0002] Thin Film Transistor (TFT) is the main driving element in current Liquid Crystal Display (LCD) and Active Matrix Organic Light-Emitting Diode (AMOLED). It is related to the display performance of the flat panel display device. [0003] Most of the liquid crystal displays currently on the market are backlight liquid crystal displays, which include a liquid crystal display panel and a backlight module. The working principle of the liquid crystal display panel is to pour liquid crystal molecules between the thin film transistor array substrate (ThinFilm Transistor Array Substrate, TFT Array Substrate) and the color filter (ColorFilter, CF) substrate, and apply pixel voltage on the two substrates respectively. and the common voltage, through the electric field formed between the pixel voltage and the common voltage to control...

AI Technical Summary

Problems solved by technology

The current backlight LCD generally adopts the direct type backlight module, but the optical distance (Optical Distance, OD) value of the direct type backlight module is generally relatively large (the height from the circuit board of the backlight module to the diffuser plate is called the optical distance). Height), so that the overall thickness of the liquid crystal display is thicker. In addition, some liquid crystal displays adopt the small OD value scheme of the lens scheme, but the current OD value can only be around 10mm. If you want to further reduce the OD value of the backlight module, more difficult

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