Polarizer, liquid crystal display device and method for preparing polarizer

Abstract

The invention discloses a polarizer which is attached to the surface, facing to a backlight module, of an array substrate. The polarizer comprises a first protecting layer, a polarizing light layer and a second protecting layer which are successfully stacked; the first protecting layer and the second protecting layer are used for preventing the hydrolyzation of the polarizing light layer; the first protecting layer is positioned at one side, back-away from the array substrate, of the polarizing light layer; the polarizer also comprises a quantum dot function layer which is positioned between the first protecting layer and the polarizing light layer or one side, away from the polarizing light layer, of the first protecting layer; the quantum dot function layer is used for converting the single color backlight sent by the backlight module into colorful light. The colorful light sent by the quantum dot function layer has wide spectrum so that the LCD display has high color gamut and good color rendition; the quantum dot function layer is prepared inside the polarizer of a display device so that there is no need to add other devices; the manufacture procedure is simple and easy; the material cost and production cost are low.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a polarizer, a liquid crystal display device and a preparation method of the polarizer. Background technique [0002] Thin Film Transistor-LCD (Thin Film Transistor-LCD, TFT-LCD) has been developed rapidly and widely used in recent years. It is widely used in display devices of portable mobile electronic products, such as mobile phones, digital cameras, handheld computers, GPRS, etc. mobile products. Since the LCD display module filters the backlight before displaying, the color gamut of the LCD depends entirely on the spectrum of the backlight. However, a light emitting diode (Light Emitting Diode, LED) has a relatively narrow spectrum, resulting in a relatively low color gamut of an LCD display using the LED as a backlight, and color distortion is prone to occur in displayed images. In order to improve the display effect of LCD displays, quantum dot materials are often used ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a polarizer, a liquid crystal display device and a preparation method of the polarizer, so as to solve the poor color reproduction effect of the quantum dot plastic film and the quantum dot glass tube in the prior art, and the production and the problems of increased material cost, increased preparation difficulty and material dependence

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