Patent ID: 9019323
Filing Date: 2015-04-28
Classification: G09G,H01L

Abstract:
1. A display device including a display unit having a plurality of pixels that are arranged two-dimensionally, the display device comprising: a voltage source which supplies a supply voltage to the display unit; and a voltage regulating unit configured to regulate the supply voltage output by the voltage source, according to video data indicating luminance of each of the plurality of pixels, wherein the display unit further includes at least one power source line connected to the pixels and the voltage source, for supplying the supply voltage from the voltage source, the display device further comprises a voltage measuring unit configured to measure a voltage which is supplied to a predetermined one of the pixels through the at least one power source line, the voltage regulating unit is configured to calculate, from the video data, a distribution of a voltage drop amount generated in the at least one power source line, to calculate a voltage at the at least one power source line in the predetermined one of the pixels from the distribution of the voltage drop amount calculated, and to regulate the supply voltage based on the calculation result and the voltage measured by the voltage measuring unit, the voltage source supplies a first voltage and a second voltage to the display unit, the second voltage being different from the first voltage, the at least one power source line includes a first power source line for supplying the first voltage and a second power source line for supplying the second voltage, and the voltage regulating unit is configured to calculate a first distribution and a second distribution, the first distribution being a distribution of the voltage drop amount in the first power source line, the second distribution being a distribution of the voltage drop amount in the second power line, and to regulate the first voltage and the second voltage, based on a first distribution and a second distribution for each of the pixels calculated, respectively.