Liquid crystal display device with light shield of specific tran

Details Liquid crystal display device with light shield of specific tran Liquid crystal display device with light shield of specific tran

1987-12-09

1989-05-09

Miller, Stanley D.

350336, G02F 113

Patent

active

048283649

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 and a light shielding layer covering other than the area corresponding to a display pattern and 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, and 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, wherein the light shielding layer has a light transmittance of not higher than 1.0% and higher than the minimum light transmittance of the display pattern area during the application of the voltage.

REFERENCES:
patent: 4506956 (1985-03-01), Dir
patent: 4591240 (1986-05-01), Masaki et al.
patent: 4601546 (1986-07-01), Ohta

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