Patent ID: 9236011
Filing Date: 2016-01-12
CPC Classification: G09G

Claim Text:
1. An Organic Light Emitting Diode (OLED) display device for pixel current sensing, comprising: a display panel including pixels, each of the pixels including a light emitting element and a pixel circuit for independently driving the light emitting element; a data driver for driving a data line connected to the pixel circuit using a data voltage, floating one among the data line, a reference line for supplying a reference voltage to the pixel circuit, and a first power line for supplying a power to the pixel circuit in the display panel to use the floated line as a current sensing line, sensing a voltage corresponding to a pixel current of the pixel circuit flowing to the current sensing line, and outputting the sensing voltage, in a sensing mode; and a timing controller for calculating, in the sensing mode, the pixel current using the sensing voltage output from the data driver, a sensing duration of the sensing voltage, and a capacitance of a capacitor connected in parallel with the current sensing line, calculating a compensation value using the calculated pixel current, and storing the calculated compensation value.