LCDs (Liquid crystal displays) controlled by thin film diode swi

Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...

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307256, 340784, 340785, 340811, 350334, 357 32, G09F 935

Patent

active

042233089

ABSTRACT:
A matrix multiplexed display cell has thin film switch devices at matrix crosspoints to provide a turn-on threshold for the electro-optic liquid used in the cell. Each of the switch devices is a back-to-back pair of diodes. The cell is operated at low current so that the switch devices, which are deposited on glass, do not degrade rapidly in use.

REFERENCES:
patent: 4028692 (1977-06-01), Ngo
patent: 4062626 (1977-12-01), Kawakami et al.
patent: 4103297 (1978-07-01), McGreivy et al.
patent: 4114070 (1978-09-01), Asars
patent: 4129861 (1978-12-01), Giglia

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