Color filter substrate and liquid-crystal display device

Abstract

The invention provides a color filter substrate and a liquid-crystal display device. The color filter substrate comprises a substrate base plate, multiple quantum dot filtering units arranged on the substrate base plate in an arrayed way and retaining walls arranged on the substrate base plate and located among the quantum dot filtering units. Each retaining wall comprises a black matrix layer arranged on the substrate base plate and a reflection layer arranged on the black matrix layer, wherein the thickness of each retaining wall is greater than that of each quantum dot filtering unit, and the reflection layer can reflect light irradiated to the surface of the reflection layer into the quantum dot filtering units for secondary utilization. The phenomenon is avoided that light penetratesinto other quantum dot filtering units to cause color mixture while the light utilization rate is improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a color filter substrate and a liquid crystal display device. Background technique [0002] A Liquid Crystal Display (LCD) has many advantages such as a thin body, power saving, and no radiation, and has been widely used. Such as: LCD TV, mobile phone, personal digital assistant (PDA), digital camera, computer screen or notebook computer screen, etc., occupy a dominant position in the field of flat panel display. [0003] The working principle of the liquid crystal display is to pour liquid crystal molecules between the thin film transistor array substrate (Thin Film Transistor Array Substrate, TFT Array Substrate) and the color filter substrate (Color Filter Substrate, CFSubstrate), and apply a driving voltage on the two substrates To control the rotation direction of the liquid crystal molecules to refract the light from the backlight module to produce a picture. [0004] Th...

AI Technical Summary

Problems solved by technology

Quantum dot materials are used in display devices to replace the existing red photoresist, green Photoresist and blue photoresist, and other structures will continue to use the technology of traditional liquid crystal display devices, using a black matrix to separate each quantum dot filter unit to ensure that there is no color mixing between different colors, but the film thickness of the current quantum filter unit Generally, it is 3~6um, and the black matrix with the current technology cannot reach the level above 2um, so it is difficult to separate different quantum filter units by relying solely on a layer of black matrix, and color mixing is prone to occur, resulting in poor display

Images