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Compensation system and liquid crystal display device for liquid crystal panel

A technology of liquid crystal display devices and liquid crystal panels, applied in nonlinear optics, instruments, optics, etc., can solve problems such as low contrast, reduce dark state light leakage, and improve the effect of viewing angle range

Active Publication Date: 2013-04-10
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Compensation system and liquid crystal display device for liquid crystal panel
  • Compensation system and liquid crystal display device for liquid crystal panel
  • Compensation system and liquid crystal display device for liquid crystal panel

Examples

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Embodiment Construction

[0047] see image 3 , image 3 is a schematic structural view of the liquid crystal display device according to the first embodiment of the present invention. In this embodiment, the liquid crystal display device 1 includes: a liquid crystal panel 11 , a compensation system 12 , a first polarizing film 131 , and a second polarizing film 132 .

[0048] In this embodiment, the liquid crystal panel 11 is a vertical alignment liquid crystal cell (Vertical Alignment Cell, VA Cell). see further Figure 4 , Figure 4 It is a structural schematic diagram of the liquid crystal panel of the first embodiment of the present invention. The liquid crystal panel 11 is provided with a liquid crystal layer 110 including a plurality of liquid crystal molecules 111, the refractive index anisotropy of the liquid crystal layer 110 for incident light having a wavelength of 550 nm is Δn, the thickness of the liquid crystal layer 110 is d, and the liquid crystal optical path of the liquid crystal...

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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...

Claims

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Application Information

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IPC IPC(8): G02F1/13363G02F1/1335
CPCG02F1/133634G02F1/1393G02F2413/02G02F2413/05G02F2413/12G02F2413/13
Inventor 康志聪海博
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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