LCD comprising an angle between diffusing-direction and slow-axi

Details LCD comprising an angle between diffusing-direction and slow-axi LCD comprising an angle between diffusing-direction and slow-axi

1997-06-17

2000-09-19

Sikes, William L.

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

349118, 349179, G02F 11335, G02F 113

Patent

active

061220264

ABSTRACT:
A sufficiently wide viewing angle characteristic is obtained while a sufficient front contrast is ensured. With respect to the light transmitted by a polarizing plate and a phase difference plate before exiting from a liquid crystal display device, the viewing angle in the 12-6 o'clock direction is improved by a phase difference plate. By a light diffusing plate, a sufficient front contrast is ensured by causing the light to exit in the direction of the normal and the light is diffused in the 9-3 o'clock direction where the viewing angle is not improved by the phase difference plate. In the case where the light diffusing plate has a double refractivity, the liquid crystal display apparatus is arranged so that the light is transmitted by the light diffusing plate after transmitted by a polarizing plate. In the case where the light diffusing plate has no double refractivity, the liquid crystal display apparatus is arranged so that the light is transmitted by the polarizing plate after transmitted by the light diffusing plate.

REFERENCES:
patent: 4239349 (1980-12-01), Scheffer et al.
patent: 5249071 (1993-09-01), Yoshimizu et al.
patent: 5629784 (1997-05-01), Abileah et al.
patent: 5680184 (1997-10-01), Nishino
patent: 5699137 (1997-12-01), Kishimoto
patent: 5731858 (1998-03-01), Hisatake et al.
patent: 5796455 (1998-08-01), Mizobata et al.
patent: 5825442 (1998-10-01), Yoneda et al.

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