Patent ID: 7847761
Filing Date: 2010-12-07
Classification: G09G

Abstract:
1. A method for driving a display including pixel circuits that are arranged in rows and columns with each pixel circuit having (a) an electro-optical element of which one end is connected to a first supply potential, (b) a drive transistor that has a source connected to the other end of the electro-optical element and is formed of an N-channel thin film transistor, (c) a sampling transistor that is connected between a data line and a gate of the drive transistor and captures an input signal dependent upon luminance information from the data line, (d) a first switching transistor connected between a drain of the drive transistor and a second supply potential, (e) a second switching transistor connected between the gate of the drive transistor and a predetermined potential, (f) a third switching transistor connected between the source of the drive transistor and a third supply potential, and (g) a capacitor connected between the gate and the source of the drive transistor, the method comprising the step of: driving the second switching transistor and the sampling transistor sequentially but with a timing relationship such that the sampling transistor is in a conducting state for an entire period, the period including a length of time in which the second switching transistor is in a conducting state during the period and a length of time in which the second switching transistor is in a non-conducting state during the period, wherein the second switching transistor is left in a conducting state when the sampling transistor is turned on into a conducting state.