Liquid crystal display device

Abstract

Provided is a liquid crystal display device, comprising a liquid crystal panel (1) and a collimated light-emitting backlight module (3); the liquid crystal panel (1) comprises a color filter substrate (11), an array substrate (13), and a liquid crystal layer (12); the upper surface of the color filter substrate (11) is provided with an upper polarizer (15), and the lower surface of the array substrate (13) is provided with a lower polarizer (17); the upper polarizer (15) is provided with a viewing angle diffusion film (19); the collimated light-emitting backlight module (3) comprises two backlights (31), a metal grating reflective plate (33), a wire-grid polarizer (35), and an optical film assembly (37); the two backlights (31), metal grating reflective plate (33), and wire-grid polarizer (35) constitute a light-guiding chamber (39). Light transmittance and light output efficiency are significantly improved, and the problem of color shift at wide viewing angles is effectively solved.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a liquid crystal display device. Background technique [0002] Liquid Crystal Display (LCD) has many advantages such as thin body, power saving, and no radiation, and has been widely used, such as LCD TV, mobile phone, personal digital assistant, digital camera, computer screen or notebook computer screen Wait. [0003] Most of the existing liquid crystal display devices are backlight liquid crystal display devices, which include a housing, a liquid crystal panel disposed in the housing, and a backlight module disposed in the housing. The LCD panel itself does not emit light, and the backlight module needs to provide a light source for the LCD panel to display images normally. [0004] figure 1 Shown is a schematic diagram of a conventional liquid crystal display device. The structure of the traditional liquid crystal panel 100 is composed of a color filter sub...

AI Technical Summary

Problems solved by technology

VA mode has the advantages of high yield rate and high production capacity, but in order to reduce the color difference displayed by large viewing angles, ITO electrodes must use 8domain patterns to improve large viewing angle deviation, but the use of 8domain patterns for ITO electrodes will reduce the process yield and aperture ratio. , the liquid crystal efficiency decreases, and the light transmittance decreases, which indirectly increases the cost of the backlight module

If the 2domain or 1domain VA mode solution is used, the light penetration rate can be greatly improved, but the large-view role deviation will obviously become serious

[0007] In addition, because the display panel of the LCD TV needs to be viewed from a large viewing angle, the viewing angle brightness must meet the viewing angle specification requirements of 1 / 2 brightness or 1 / 3 brightness, and the optical film set of the backlight module needs to achieve a larger light emitting viewing angle, while the LCD panel The penetrability of light with a large viewing angle decreases, which reduces the light output efficiency of the backlight module, and makes the problem of large viewing angle deviation of the LCD panel obvious

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