Liquid crystal display

Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix

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345 98, 345100, 345 96, G09G 336

Patent

active

060493216

ABSTRACT:
A liquid crystal display includes a matrix array of liquid crystal pixels, data lines formed along columns of the pixels, TFTs assigned to the pixels for causing the data lines to be electrically connected to the pixels of a selected row, and a data line driver which drives the data lines and has a first video bus for transmitting analog pixel signals of the positive polarity for the pixels of one of odd and even columns in a selected row, a second video bus for transmitting analog pixel signals of the negative polarity for the pixels of the other one of the odd and even columns in the selected row, sample-hold units each assigned to adjacent two of the data lines to simultaneously sample-hold the pixel signals on the first and second video buses, and a shift register circuit for enabling the operations of the sample-hold units sequentially. Particularly, each sample-hold unit has a first switch circuit for causing the first and second video buses to be connected to one of the adjacent two data lines and the other one of the adjacent two data lines, and a second switch circuit for causing the first and second video buses to be connected to the other one of the adjacent two data lines and the one of the adjacent two data lines, and the shift register circuit has a logic circuit for periodically switching between the first and second switch circuits of each sample-hold unit.

REFERENCES:
patent: 5602561 (1997-02-01), Kawaguchi et al.
patent: 5748165 (1998-05-01), Kubota et al.

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