Display device

摘要

A display device includes a scan driver, a data driver, a power supply unit configured to supply power through a plurality of power supply inlet portions, a pixel unit including a plurality of pixels that receives scan signals, emission control signals, data signals and the power so as to display an image, the pixel unit being partitioned into a plurality of partition areas to correspond to the respective power supply inlet portions, and a current limit circuit configured to calculate values of current for each of the partition areas based on gray scale data of an image signal, and configured to correct the gray scale data so as to limit luminance of the pixel unit when at least one of the values of current for each partition area is a reference value or more.

主权项

1. A display device, comprising:
a scan driver configured to apply scan signals and emission control signals through a plurality of scan lines and a plurality of emission control lines; a data driver configured to apply data signals through a plurality of data lines; a power supply unit configured to supply power through a plurality of power supply inlet portions; a pixel unit including a plurality of pixels that receives the scan signals, the emission control signals, the data signals and the power so as to display an image, the pixel unit being partitioned into a plurality of partition areas to correspond to the respective power supply inlet portions; and a current limit circuit configured to calculate values of current for each of the partition areas based on gray scale data of an image signal, and configured to correct the gray scale data so as to limit luminance of the pixel unit when at least one of the values of current for each partition area is a reference value or more, wherein the current limit circuit includes:
a conversion unit configured to convert the gray scale data into a data current value;a calculation unit configured to calculate current values for each partition area by dividing the data current value, based on a predetermined current distribution rate for each partition area, and to accumulate data current values for one frame; anda comparison unit configured to decide whether the current values for each partition area are within a reference range.