Patent ID: 7760167
Filing Date: 2010-07-20
Classification: G09G

Abstract:
1. A display apparatus, comprising: a pixel array section; and a drive section that drives the pixel array section, wherein the pixel array section includes first scanning lines and second scanning lines arranged in rows, signals lines arranged in columns, matrix pixels that are provided at a position where the first scanning lines, the second scanning lines, and the signal lines cross, a power line that supplies power to each of the pixels, and an earth line, the drive section includes a first scanner that sequentially line scans the pixels per each row by sequentially supplying a first control signal to each of the first scanning lines, a second scanner that sequentially supplies a second control signal to each of the second scanning lines in conjunction with the sequential line scanning, and a signal selector that supplies video signals to the columns of signal lines in conjunction with the sequential line scanning, the pixel includes a light emitting element, a sampling transistor, a drive transistor, a switching transistor and a pixel capacitance, the sampling transistor has a gate connected to the first scanning line, a source connected to the signal line, and a drain connected to a gate of the drive transistor, the drive transistor and the light emitting element form a current path by being connected in series between the power line and the earth line, the switching transistor is inserted in the current path and its gate is connected to the second scanning line, the pixel capacitance is connected between a source and the gate of the drive transistor, the sampling transistor turns on in response to the first control signal supplied from the first scanning line, samples a signal potential of the video signal supplied from the signal line, and holds it in the pixel capacitance, the switching transistor turns on in response to the second control signal supplied from the second scanning line and turns the current path in a conductive state, the drive transistor allows a drive current corresponding to the signal potential held in the pixel capacitance to flow to the light emitting element via the current path that is placed in the conductive state, after starting the sampling of the signal potential by turning on the sampling transistor by applying the first control signal to the first scanning line, the drive section applies to the signal potential held by the pixel capacitance a correction with respect to a mobility of the drive transistor during a correction period, the correction period being a time period from a first timing at which the switching transistor turns on by having the second control signal applied to the second scanning line up to a second timing at which the sampling transistor turns off when the first control signal applied to the first scanning line is terminated, the first scanner includes an output section that gives a gradient to a trailing end of the first control signal that governs the second timing, and the output section optimizes the correction period for both a case where the signal potential is high and a case where the signal potential is low by outputting a curved gradient waveform that varies from an initially steep gradient to a more gentle gradient.