Liquid crystal display device

Abstract

The invention provides a liquid crystal display device. The liquid crystal display device comprises a liquid crystal panel (1) and a collimation 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 polaroid (15), and the lower surface of the array substrate (13) is provided with a lower polaroid (17). The collimation light-emitting backlight module (3) comprises a light guide plate (31), a backlight source (33), an optical diaphragm set (35) and a bottom reflection piece (37), the upper polaroid (15) is provided with a visual angle diffusion diaphragm (19), the optical diaphragm set (35) comprises a polarization beam splitting diaphragm (351), and the polarization beam splitting diaphragm (351) comprises a brightening diaphragm body (352) of a prism structure and an optical diaphragm body (353) with a high refraction coefficient or a macromolecular coating (353). According to the liquid crystal display device, the penetration rate of light and the light-emitting efficiency can be substantially improved and a large visual angle color cast problem can be 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 productivity, but in order to reduce the color difference displayed by large viewing angles, ITO electrodes must use 8 domain patterns to improve large viewing angle deviation, but the use of 8 domain patterns for ITO electrodes will reduce the process yield and reduce the aperture. efficiency, liquid crystal efficiency, and light transmittance decrease, indirectly increasing the cost of the backlight module

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

[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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