Patent ID: 9165504
Filing Date: 2015-10-20
Classification: G09G

Abstract:
1. A method of controlling a dimming operation of an organic light emitting display device that includes an organic light emitting element, a first transistor connected to a data line and a gate line, and a second transistor connected to the first transistor and the organic light emitting element, the method comprising: compensating image data using a plurality of look-up tables respectively corresponding to a plurality of dimming modes, to output compensation data corresponding to the image data; converting the compensation data to a data voltage to provide the organic light emitting element with the data voltage; and adjusting a level of a current applied to the organic light emitting element according to each of the dimming modes, wherein the adjusting the level of the current comprising: providing a third transistor with a current-control voltage having a voltage difference with respect to a first source voltage, the voltage difference being different according to the dimming mode, the third transistor including an input electrode receiving the first source voltage, a control electrode receiving the current-control voltage and an output electrode connected to the second transistor.