Patent ID: 9681207
Date: 2017-06-13
CPC Classifications: G02F,G09G,H04Q

Claim:
1. A liquid crystal on silicon system comprising: a plurality of columns of pixels, the plurality of columns of pixels divided into a plurality of columns of pixels subsets, wherein each of the plurality of columns of pixels subsets include more than one of the plurality of columns of pixels; a pixel voltage supply source configured to supply an analog ramp signal to the plurality of columns of pixels; a plurality of local buffer amplifiers configured to directly supply the plurality of columns of pixels with voltages based on the analog ramp signal such that individual pixels on each of the plurality of columns of pixels are directly supplied with the voltages from the plurality of local buffer amplifiers, each of the plurality of local buffer amplifiers coupled to a different one of the plurality of columns of pixels subsets and each of the plurality of columns of pixels subsets are coupled to and only available to be coupled to only one of the plurality of local buffer amplifiers; a plurality of selector switches, each of the plurality of selector switches coupled between one of the local buffer amplifiers of the plurality of local buffer amplifiers and one of the plurality of columns of pixels subsets; and an external buffer amplifier coupled between the pixel voltage supply source and each of the plurality of local buffer amplifiers and configured to supply the analog ramp signal to the plurality of local buffer amplifiers.