Patent ID: 8305374

Claim:
A display comprising: a display panel having a plurality of pixels and on which display panel a plurality of data lines are disposed; a data driver for supplying to respective ones of the data lines, data voltages generated by a polarity-based modulating of received input image data, wherein the input image data comprises a predetermined number of data bits per pixel that represent levels of respective and to be rendered colors of respective pixels and wherein the data driver includes: a decoder unit operative to modulate the received input image data into data voltages for driving the display panel in accordance with a supplied polarity control signal, the decoder unit being coupled to receive a first plurality of grayscale voltages; a precharging unit; and an output buffer unit structured and coupled to apply respective analog voltages to respective ones of the data lines, the output buffer unit having an input coupled to receive buffer driving signals respectively from the precharging unit and from the decoder unit; wherein the precharging unit is supplied with a more significant subset of the predetermined number of data bits per pixel of the received input image data, the subset having a fewer number of bits than said predetermined number, and wherein the precharging unit is supplied with a plurality of predetermined precharge voltages, the plurality of predetermined precharge voltages being fewer in number than said first plurality of grayscale voltages, the plurality of predetermined precharge voltages not including absolute value maximums or absolute value minimums of positive polarity and negative polarity ranges covered by the polarity-based modulating of received input image data, and wherein the precharging unit includes a precharge selecting switch operative to select, from the plurality of predetermined precharge voltages, one specific precharge voltage for application to a respective data line according to identification by the more significant subset of data bits per pixel of a corresponding one of predetermined grayscale sections forming said first plurality of grayscale voltages, and the precharging selecting switch is configured to apply the selected precharge voltage, to the respective data line by way of the output buffer unit; and wherein the precharging unit further includes a grayscale reading unit that controls the precharge selecting switch to operate according to the identified grayscale section.