Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1997-05-01
2000-10-24
Shankar, Vijay
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 95, 345 99, 345100, G09G 336
Patent
active
061374628
ABSTRACT:
Liquid crystal display (LCD) driving circuit in which a small number of voltage sources enable multi-gradation display and gamma correction without extra gamma correction circuits is disclosed. The LCD driving circuit includes a ramp wave generator for generating a plurality of ramp waves each having an appropriate tilt for each section along a T axis of a T-V (transmission-voltage) curve representing the light transmittivity of an LCD according to an applied voltage, a ramp wave selector for selecting one of the plurality of ramp waves according to input data, and a counter for adjusting the time the ramp wave outputted by the ramp wave selector is applied.
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Alan G. Lewis et al., "Driver Circuits for AMLCDs", Xerox Palo Alto Research Center, Palo Alto, CA, pp. 56-64.
LG Electronics Inc.
Shankar Vijay
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