Patent ID: 6825834
Filing Date: 2004-11-30
Classification: G02F,G09G

Abstract:
An active matrix display device including a plurality of pixel element electrodes disposed as a matrix, a plurality of gate signal lines disposed in a row direction of the matrix, a plurality of drain signal lines disposed in a columnar direction of the matrix, said pixel element electrode being selected by a scanning signal from the gate signal line and provided with an image signal from the drain signal line, said active matrix display device comprising:a plurality of first display circuits each passing the image signal fed from a corresponding drain signal line to a corresponding pixel element electrode selected by the scanning signal inputted from a corresponding gate signal line; a plurality of second display circuits each having a retaining circuit which retains the image signal fed from the corresponding drain signal line in response to the scanning signal inputted from the corresponding gate signal line, said second display circuit supplying a signal corresponding to the image signal held by the retaining circuit to the corresponding pixel electrode; a plurality of circuit selection circuits each selectively connecting a corresponding first display circuit or a corresponding second display circuit to the corresponding drain signal line in response to a circuit selection signal; a power line which supplies a predetermined voltage to the retaining circuits, said power line extending in one direction of the matrix and being commonly used by the retaining circuits for the pixel element electrodes forming a line of the matrix in said direction, said power line being also used by the retaining circuits for the pixel element electrodes forming another line of the matrix in the direction, said line of the matrix being next to said another line of the matrix; and another power line supplying another predetermined voltage to the retaining circuits forming said line of the matrix, said power line and said another power line being driver power lines.