Patent ID: 8310439
Filing Date: 2012-11-13
Classification: G09G

Abstract:
1. An apparatus for driving an electrophoretic display comprising: a data driver configured to apply data voltages to a plurality of pixels where electrophoretic particles are respectively disposed; a memory configured to store gray information, level information of data voltages, and application time information of the data voltage; and a signal controller configured to read the gray information, the level information of the data voltage, and the application time information of the data voltage stored in the memory, and configured to output an output image signal to the data driver, wherein the signal controller is further configured to perform counting to update the application time information of the data voltage, the counting being performed by synchronization of a data enable signal; wherein the signal controller is further configured to store the updated application time information of the data voltage in the memory after the counting, to compare the gray information stored in the memory with updated gray information input from an external device, to store an updated level information of the data voltage and a further updated application time information in the memory, where the updated level information and the further updated application time information are determined based on the gray information stored in the memory and the updated gray information when the gray information stored in the memory and the updated gray information are different from each other.