Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1978-12-13
1981-08-25
Trafton, David L.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340784, 350339R, G08B 536
Patent
active
042862663
ABSTRACT:
In a liquid crystal display device which upon controlling with direct voltage shows a memory effect that can be erased by alternating voltage, the written area can expand beyond the edge of the electrode so that edge zones can no longer be erased readily. This disadvantage is avoided by covering the edges of the electrodes with an insulating layer.
REFERENCES:
patent: 3740717 (1973-06-01), Huener et al.
patent: 3781862 (1973-12-01), Yamamura
patent: 3836229 (1974-09-01), Saurer
patent: 3912366 (1975-10-01), Sprokel
de Zwart Maarten
Heldens Johannes L. A. M.
Briody Thomas A.
Mayer Robert T.
Miller Paul R.
Trafton David L.
U.S. Philips Corporation
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