Patent ID: 7525524
Filing Date: 2009-04-28
Classification: G09G

Abstract:
1. A data driving circuit comprising: a D/A converter for receiving first digital data from data lines in a first cycle to convert to first analog transformed data, and receiving second digital data from the data lines in a second cycle to convert to second analog transformed data; a switch unit coupled to the D/A converter; a first analog sampling storage circuit, coupled to the switch unit and coupled to the D/A converter through the switch unit, for storing the first analog transformed data in the first cycle, and outputting first analog data corresponding to the first analog transformed data in the second cycle, wherein the first analog sampling storage circuit comprises: a second analog sampling storage circuit, coupled to the switch unit and coupled to the D/A converter through the switch unit, for storing the second analog transformed data in the second cycle, and outputting second analog data corresponding to the second analog transformed data in a third cycle, wherein the second analog sampling storage circuit comprising: wherein the switch unit comprises a third transistor, having a first end coupled to the voltage source, a second end coupled to the first switch and the third switch, and a third end coupled to the D/A converter through a fifth switch and coupled to the first switch and the third switch through a sixth switch.