Patent ID: 6411269
Filing Date: 2002-06-25
Classification: G09G

Abstract:
In a display having a column line, a first row line, a second row line, a first pixel, and a second pixel, said column line being shared by the first and second row lines, a brightness of said first pixel being determined by a voltage difference between said column line and said first row line, a brightness of said second pixel being determined by a voltage difference between said column line and said second row line, said first pixel being dark when a voltage differential between said column line and said first row line equals a reference level, said second pixel being dark when a voltage differential between said column line and said second row line equals said reference level, a process for controlling said first and second pixels, the process comprising:setting the first pixel to a first desired brightness level comprising the step of setting the voltage of said column line relative to the first row line to a first level; setting the second pixel to a second desired brightness level comprising the steps of: comparing a signal representative of said voltage of said column line relative to said first row line to a signal representative of a desired level of said voltage of said column line relative to said second row line to generate a signal representative of the difference between the voltage of said column line relative to said first row line and the desired level of said voltage of said column line relative to said second row line; and in response to said comparison, applying the signal representative of the difference to said column line to set the voltage of said column line relative to said second row line equal to said desired level without setting the voltage of said column line relative to said second row line equal to said reference level.