Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1979-07-25
1980-09-16
Trafton, David L.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
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
Baraff David R.
Drobny Vladimir F.
Miner Carla J.
Serinken Nur M.
Streater Richard W.
Jelly Sidney T.
Northern Telecom Limited
Trafton David L.
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