Compensation system and liquid crystal display device for liquid crystal panel

Abstract

The invention provides a compensation system and a liquid crystal display device for a liquid crystal panel. The compensation system comprises a first biaxial compensation film and a second biaxial compensation film which are arranged on the two sides of the liquid crystal panel. The in-plane compensation values of the first biaxial compensation film and the second biaxial compensation film aiming at incident light with a wavelength of 550 nm are Ro1 and Ro2 respectively, and the thickness direction compensation values are Rth1 and Rth2 respectively, wherein the Ro1 is larger than or equal to 15 nm and is smaller than or equal to 94 nm; the Rth1 is larger than or equal to 35 nm and is smaller than or equal to 214 nm; the Ro2 is larger than or equal to 14 nm and is smaller than or equal to 101 nm; the Rth2 is larger than or equal to Y1 and is smaller than or equal to Y2; the Y1 is equal to 0.004302*Rth12-1.96894*Rth1+259.7; and the Y2 is equal to -0.00234308*Rth12-0.32227*Rth1+245. In such a manner, through reasonable arrangement of the compensation values of the biaxial compensation films, the dark state light leakage phenomenon of the liquid crystal panel can be effectively reduced.

Description

technical field [0001] The 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 technology, liquid crystal display devices have become the most mainstream display devices at present. However, as the viewing angle of the liquid crystal display device increases, the contrast of the picture will decrease continuously, and the definition of the picture will also decrease. This is the result that the birefringence of the liquid crystal molecules in the liquid crystal layer changes as the viewing angle changes. If a wide viewing angle compensation film is used for compensation, the light leakage of the dark state screen can be effectively reduced, and the contrast of the screen can be greatly improved within a certain viewing angle. The compensation principle of the compensation film is generally to correct the phase di...

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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