Patent ID: 8120563
Filing Date: 2012-02-21
Classification: G09G

Abstract:
1. A drive circuit for an active matrix liquid crystal display device including: a plurality of data signal lines; a plurality of scanning signal lines crossing with the data signal lines; and a plurality of pixel formation portions disposed in a matrix pattern each corresponding to one of intersections made by the data signal lines and the plurality of scanning signal lines; each pixel formation portion including a capacity for taking and holding a voltage of a data signal line which passes through the corresponding intersection when the selection is made to the scanning signal line that passes through the intersection; the drive circuit applying to the data signal lines a plurality of data signals representing an image to be displayed, while making sequential selection of the plurality of scanning signal lines for formation of the image to be displayed in the pixel formation portions; the drive circuit comprising: a selection-making section configured to select the plurality of scanning signal lines simultaneously upon reception of a signal indicating a commencement of display in the liquid crystal display device, and before any formation of images on the plurality of pixel formation portions occurring after the signal is received; a discharging section configured to discharge electric charges accumulated at the capacities in the pixel formation portions via the data signal lines while the plurality of scanning signal lines are selected by the selection-making section, and before any formation of images on the plurality of pixel information portions occurring after the signal is received; and a selection-canceling section configured to deselect the plurality of scanning signal lines which have been simultaneously selected by the selection-making section, in a stepwise manner after the discharge of the accumulated electric charges by the discharging section, before any formation of images on the plurality of pixel information portions occurring after the signal is received, and before a commencement of sequential selection of the plurality of scanning signal lines for forming images on the plurality of pixel formation portions.