Method of preparing a circuit utilizing a liquid crystal artwork

Details Method of preparing a circuit utilizing a liquid crystal artwork Method of preparing a circuit utilizing a liquid crystal artwork

1975-06-26

1977-03-22

Louie, Jr., Won H.

Gas separation: apparatus

Electric field separation apparatus

Electrode cleaner, apparatus part flusher, discharger, or...

96 362, 96 27E, 96 27R, 96 384, 350160LC, G03C 500, G03C 504

Patent

active

040134660

ABSTRACT:
A method of forming a circuit mask is disclosed. The method comprises selectively heating a portion of a cell comprising a liquid crystal above the transition temperature of the liquid crystal material to render the portion capable of scattering a desired radiant energy. An artwork master is thus formed having a pattern delineated therein capable of transmitting the desired radiant energy therethrough. A member having a surface sensitive to the desired radiant energy is positioned in a desired spatial relationship with the master. The master is exposed to the desired radiant energy whereby the radiant energy is transmitted through the pattern to expose at least a portion of the sensitive surface thereto. The exposed sensitive surface is treated to form the circuit mask having a pattern capable of transmitting light therethrough.

REFERENCES:
patent: 3404451 (1968-10-01), So
patent: 3722998 (1973-03-01), Morse
patent: 3758207 (1973-09-01), Letzer
patent: 3771218 (1973-11-01), Langdon
patent: 3796999 (1974-03-01), Kahn
patent: 3836243 (1974-09-01), Melchior

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