Communications: electrical – Continuously variable indicating – With meter reading
Patent
1984-10-11
1987-12-01
Curtis, Marshall M.
Communications: electrical
Continuously variable indicating
With meter reading
340719, 340784, 340792, G09G 300
Patent
active
047107685
ABSTRACT:
A liquid crystal display device comprising display picture element electrodes connected to switching transistors formed at each crossing of the row and column electrodes of a matrix array with the opposite electrodes being opposite from the display picture element electrodes and across from the interfacing liquid crystal layer. Video signals are inverted into alternating positive
egative polarities for every field and applied to the column electrodes. A specific voltage that inverts its polarity in the same timing as the video signals is applied to the opposite electrodes. The drive method thus embodied by the present invention effectively minimizes the power consumption and allows for compensation of uneven display contrast effects.
REFERENCES:
patent: 4356483 (1982-10-01), Fujita et al.
patent: 4378557 (1983-03-01), Murata
patent: 4393380 (1983-07-01), Hosokawa et al.
patent: 4427979 (1984-01-01), Choe et al.
patent: 4429304 (1984-01-01), Fujita
patent: 4532506 (1985-07-01), Kitazima et al.
patent: 4560982 (1985-12-01), Sonehara et al.
patent: 4571585 (1986-02-01), Stein et al.
Nonomura Keisaku
Takeda Makoto
Yamamoto Kunihiko
Curtis Marshall M.
Sharp Kabushiki Kaisha
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