Patent ID: 7738512
Filing Date: 2010-06-15
Classification: G09G,H04J

Abstract:
1. A display device comprising: a display area including a plurality of data lines for transmitting data current for displaying an image, and a plurality of pixel circuits coupled to the data lines; a plurality of first signal lines; a data driver coupled to the first signal lines for time-dividing a first current corresponding to the data current, and transmitting the time-divided first current to the first signal lines; and a demultiplexer unit including a plurality of demultiplexers for respectively receiving the first current from the first signal lines, and a precharge unit coupled to at least one of the demultiplexers for transmitting a precharge current having a magnitude that varies according to a magnitude of the first current to the first signal lines in response to a control signal, wherein said at least one of the demultiplexers receives the first current from the first signal lines and transmits the data current to at least two data lines, and the precharge current is transmitted to the first signal lines before the data driver transmits the first current corresponding to one of the data lines, wherein said at least one of the demultiplexers includes a plurality of sample/hold circuits coupled to the first signal lines, the sample/hold circuits of a first group sequentially sampling the first current sequentially applied through the first signal lines and the sample/hold circuits of a second group holding sampled current to at least two data lines during a first portion of a horizontal period, and the sample/hold circuits of the first group holding current and the sample/hold circuits of the second group sampling the current held by the sample/hold circuits of the first group during a second portion of the horizontal period, and wherein the second portion is shorter than the first portion.