Liquid crystal device and method of driving same

Details Liquid crystal device and method of driving same Liquid crystal device and method of driving same

1986-08-29

1988-10-18

Birmiel, Howard A.

Communications: electrical

Continuously variable indicating

With meter reading

340784, 340789, G09G 300

Patent

active

047790865

ABSTRACT:
In a method of driving a liquid crystal panel using one horizontal period (1H) as a reversal period, the liquid crystal panel using a TFT as a switching element for driving the panel in units of divided blocks and comprising the block division TFT's (B-TFT), a matrix circuit for driving each block in time division, and a TFT active matrix panel; each block of the B-TFT's is further divided into two half-blocks and a control signal shifted in phase between adjacent two half-blocks is applied to time-divisionally drive the liquid crystal panel at superposed timings. High intensity lines produced at the intersection of blocks due to the charge sharing effect are eliminated to thereby enable a high quality image to be produced.

REFERENCES:
patent: 4476466 (1984-10-01), Mitani et al.
patent: 4649383 (1987-03-01), Takeda
patent: 4660030 (1987-04-01), Maezawa
patent: 4724433 (1988-02-01), Inoue et al.

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