Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1986-07-24
1988-05-24
Miller, Stanley D.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
350332, 350350S, 340784, 340805, 340811, G02F 113
Patent
active
047461977
ABSTRACT:
A liquid crystal display device comprises: a liquid crystal module including liquid crystal display panel having a plurality of liquid crystal picture elements arranged in a matrix form, and driving circuits for applying driving signals to signal electrodes and to scanning electrodes of the liquid crystal display panel, respectively; a control circuit for controlling operations of the liquid crystal module; and a means for inverting polarity of a voltage to be applied to a liquid crystal layer by generating a control signal M' having a period m.tau. which signal inverts the polarity of the voltage to be applied to the liquid crystal layer whenever a clock signal having a period .tau. is counted a predetermined number m/2. However, if a period of a frame frequency is n.tau. and an arbitrary integer is L,
REFERENCES:
patent: 3995942 (1976-12-01), Kawakami et al.
patent: 4651148 (1987-03-01), Takeda et al.
patent: 4691200 (1987-09-01), Stephany
Endo Shyusuke
Kinugawa Kiyoshige
Matsudo Toshimitsu
Sakuma Toshiyuki
Hitachi , Ltd.
Mai Huy V.
Miller Stanley D.
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