Double sided thin panel display unit for displaying the same ima

Details Double sided thin panel display unit for displaying the same ima Double sided thin panel display unit for displaying the same ima

1992-05-14

1994-10-18

Sikes, William L.

Optical: systems and elements

Holographic system or element

Having optical element between object and recording medium

359 50, 359 53, 40448, 345 5, G02F 11335, G02F 113, G02F 1133

Patent

active

053573552

ABSTRACT:
A double sided panel display unit produces visual images on both side thereof, and comprises a luminescent panel display with a transparent substrate, a liquid crystal shutter sandwiched between two polarizing plates different in angle of polarization at 90 degrees, and a liquid crystal display supplied with light through the transparent substrate, wherein the liquid crystal shutter and the liquid crystal display are controlled in such a manner that the same visual images are displayed on the polarizing plate as well as on the liquid crystal display, thereby achieving a thin double sided panel display with a small number of components.

REFERENCES:
patent: 4799050 (1989-01-01), Prince et al.
patent: 5115228 (1992-05-01), Harris et al.
patent: 5121234 (1992-06-01), Kucera

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