Liquid crystal shutter array having microlenses corresponding to

Details Liquid crystal shutter array having microlenses corresponding to Liquid crystal shutter array having microlenses corresponding to

1987-11-13

1989-06-06

Miller, Stanley D.

350339R, 350342, 350114, G02F 113, G02B 1702

Patent

active

048366528

ABSTRACT:
A liquid crystal shutter array requiring no separate focusing lens system. Microlenses for focusing the light incident upon a matrix of pixel electrodes are formed in a transparent substrate of the shutter assembly. A refractive index of light of each of the microlenses is set in a manner such that the incident angle .theta. of the light incident on the liquid crystal of the shutter through the microlenses satisfies; ##EQU1## where P, a, and d respectively represent the size of each of the photomasks, the length of a portion wherein each of the photomasks and corresponding ones of the pixel electrodes overlap, and the thickness of the transparent substrate on the light output side.

REFERENCES:
patent: 4263594 (1981-04-01), Masucci
patent: 4591240 (1986-05-01), Masaki et al.
patent: 4686519 (1987-08-01), Yoshida et al.
M. Brandon, "Display Device", IBM Technical Disclosure Bulletin vol. 19, No. 2, Jul. 1976.

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