Patent ID: 8619013
Filing Date: 2013-12-31
Classification: G09G

Abstract:
1. A digital-analog converter comprising: a gray scale generator comprising: a plurality of switches for generating desired gray scale voltages through charge sharing between a sampling capacitor formed by a parasitic capacitance component of a first one of at least two data lines; and a holding capacitor formed by a parasitic capacitance component of a second one of the at least two data lines; a switching signal generator for providing operation control signals for the plurality of switches of the gray scale generator; and a reference voltage generator for generating one or more reference voltages and for providing the one or more reference voltages to the gray scale generator, wherein the sampling capacitor and the holding capacitor are configured to concurrently sample the one or more reference voltages that are applied between terminals of the sampling capacitor in accordance with input digital data, and wherein a first switch of the plurality of switches is coupled between the first one of the at least two data lines and the second one of the at least two data lines for electrically coupling the holding capacitor and the sampling capacitor together, and the switch is configured to be off when the holding capacitor is initialized with one of the reference voltages.