Compensation system for liquid crystal panel and liquid crystal display device

Abstract

The invention provides a compensation system for a liquid crystal panel and a liquid crystal display device. The compensation system comprises a first biaxial compensation film and a second biaxial compensation film arranged at the two sides of the liquid crystal panel. The first biaxial compensation film has an in-plane compensation value Ro1 for incident light having the wavelength of 550 nm and a compensation value Rth1 in the thickness direction; and the second biaxial compensation film has an in-plane compensation value Ro2 for the incident light having the wavelength of 550 nm and a compensation value Rth2 in the thickness direction, wherein Ro1 is greater than or equal to 35 nm and less than or equal to 87.5 nm; Rth1 is greater than or equal to 80 nm and less than or equal to 200 nm; Ro2 is greater than or equal to 28 nm and less than or equal to 89.6 nm; Rth2 is greater than or equal to Y1 and less than or equal to Y2; Y1=0.005389*Rth12-2.367048*Rth1+323.45; and Y2=-0.003571*Rth12+0.085714*Rth1+226.74. With the previous manner, the compensation system is capable of effectively reducing the dark state light leak phenomenon of the liquid crystal panel by rationally setting the compensation values of double layers of biaxial compensation films.

Description

technical field [0001] The present invention relates to the field of liquid crystal display, in particular to a compensation system for a liquid crystal panel and a liquid crystal display device. Background technique [0002] With the development of science and technology, the liquid crystal display device has become the most mainstream display device at present. However, as the viewing angle of the liquid crystal display device increases, the contrast of the picture will decrease continuously, and the sharpness of the picture will also decrease. This is a result of the change in the birefringence of the liquid crystal molecules in the liquid crystal layer as the viewing angle changes. If a wide viewing angle compensation film is used for compensation, the light leakage of the dark picture can be effectively reduced, and the contrast of the picture can be greatly improved within a certain viewing angle. Compensation films are generally for the VA display mode, mainly inclu...

AI Technical Summary

Problems solved by technology

Depend on figure 1 and figure 2 It can be seen that under the above conditions, serious light leakage still exists in areas with azimuth angles of 30°-60°, 120°-150°, 210°-240° and 300°-330° after being compensated by the double-layer biaxial compensation film , so these viewing angles have low contrast

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