Vertical alignment (VA) display mode compensation framework and VA display mode liquid crystal display device

Abstract

The invention relates to a VA display mode compensation framework and a VA display mode liquid crystal display device. The VA display mode compensation framework comprises a first triacetyl cellulose (TAC) layer, a first polarization layer, a dual-axis compensation film, a vertical alignment liquid crystal cell, a second TAC layer, a second polarization layer and a third TAC layer which are arranged sequentially from top to bottom, the horizontal view angle zero-degree direction of the vertical alignment liquid crystal cell (that is, a VA liquid crystal display) serves as the reference, an absorbing axis of the first polarization layer is at an angle of 0 degree, a slow axis of the dual-axis compensation film is at an angle of 90 degrees, a slow axis of the second TAC layer is at an angle of 0 degree, and an absorbing axis of the second polarization layer is at an angle of 90 degrees. By the aid of the VA display mode compensation framework and the VA display mode liquid crystal display device, view angles which are severe in dark state light leakage are deflected towards a vertical view angle, the contrast ratio and the definition of the horizontal view angle are improved, and the ideal dark state light leakage effect can be achieved through ideal matching of compensation values of a single layer of the dual-axis compensation film and compensation values of TAC layers.

Description

technical field [0001] The present invention relates to a liquid crystal display device, in particular to a VA (vertical alignment) display mode compensation structure and a VA display mode liquid crystal display device. Background technique [0002] TFT (Thin Film Transistor)-LCD is a thin film transistor LCD, which is a kind of active matrix liquid crystal display (AM-LCD). Liquid crystal flat panel display, especially TFT-LCD, is currently the only display device that has fully caught up with and surpassed CRT in terms of brightness, contrast, power consumption, life, volume and weight. It has excellent performance and large-scale production characteristics. With high degree of automation, low cost of raw materials and broad development space, it will quickly become a mainstream product in the new century and a bright spot of global economic growth in the 21st century. [0003] However, as the viewing angle of TFT-LCD increases, the contrast of the screen decreases conti...

AI Technical Summary

Problems solved by technology

In order to improve the viewing effect, double-layer biaxial compensation film compensation should be used, but its price is relatively expensive, which is not conducive to reducing costs

Although the use of single-layer biaxial compensation film compensation can effectively reduce the cost, but the light leakage in the dark state near the horizontal viewing angle is serious, and the contrast is low, which affects the viewing effect.

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