Liquid crystal display device with a 50.degree.-80.degree. twist

Details Liquid crystal display device with a 50.degree.-80.degree. twist Liquid crystal display device with a 50.degree.-80.degree. twist

1988-08-29

1990-08-28

Miller, Stanley D.

350339F, 350347R, 350347E, G02F 1133

Patent

active

049520300

ABSTRACT:
A liquid crystal display device of negative display type, which comprises a liquid crystal cell comprising a nematic liquid crystal layer sandwiched between substrates provided with electrodes, a light shielding layer covering other than the area corresponding to a display pattern, a pair of polarizing films provided on both sides of the liquid crystal cell with their polarization axes arranged to permit light from a no voltage-applied portion to pass therethrough, said liquid crystal cell being adapted to apply a voltage sufficient to energize the nematic liquid crystal to the electrodes at a display pattern area other than a desired display pattern, wherein a twist angle of liquid crystal layer is in a range of 50.degree.-80.degree..

REFERENCES:
patent: 4609255 (1986-09-01), Leenhouts et al.
patent: 4664482 (1987-05-01), Kardo et al.
patent: 4815825 (1989-03-01), Nakagomi et al.

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