Patent ID: 9269301
Filing Date: 2016-02-23
CPC Classification: G09G

Claim Text:
1. A self-lighting type of display device in which output luminance is a function of analog drive voltages and corresponding digital grayscale command signals, the display device comprising: a frame operation processor configured for generating analog dimming value signals corresponding to to-be-output ones of the analog drive voltages and configured for generating corresponding digital dimming value signals corresponding to to-be-output ones of the digital grayscale command signals, the frame operation processor being responsive to supplied current limiting parameters, the frame operation processor configured for generating control value signals using the generated analog dimming value signals, the digital dimming value signals, and measured values of a current supplied to a plurality of self-lighting sub-pixels; an image data processor configured for changing initial grayscale digital data values of input video signals of one frame by using the digital dimming values generated by the frame operation processor; a self-lighting type of display panel including the sub-pixels configured to display an image corresponding to the input video signals of a respective image frame; and a variable power supply configured for controlling power source voltages used to drive the sub-pixels of the display panel, the power source voltages being controlled in accordance with the control value signals generated by the frame operation processor, wherein the variable power supply is further configured to measure the values of the current supplied to the sub-pixels and output the measured values of the current to the frame operation processor.