Patent ID: 9685111
Date: 2017-06-20
CPC Classifications: G09G

Claim:
1. A display device, comprising: a display unit including a plurality of pixels that emits light according to a plurality of data signals supplied through a plurality of data lines; a power voltage supplier to supply a power voltage to the plurality of pixels; a current detector to detect a total current flowing in the plurality of pixels; and a controller to receive image information of one frame unit, determine a data load ratio of the image information of one frame unit, and generate a reference voltage signal corresponding to the data load ratio of the image information of one frame unit, wherein the current detector is to compare the total current and the reference voltage signal and to control driving of the power voltage supplier according to the comparison, wherein the controller is to change the reference voltage signal based on changes in data load ratio of image information received for a plurality of frame units, and wherein the data load ratio is a ratio of the number of pixels emitting light and a gray level of each pixel emitting light according to the image information of one frame unit which is currently received based on a load when all of the plurality of pixels emit light at a maximum gray level.