Patent ID: 8344974
Filing Date: 2013-01-01
Classification: G09G

Abstract:
1. An organic electro-luminescence display device comprising: a panel configured to include an electroluminescent element; a driver configured to drive the panel; a timing controller configured to control the timing of the driver; a power supplier configured to generate a supply voltage that drives the electroluminescent element and a main supply voltage that drives the driver, from an input voltage applied from an external power supply unit; and a voltage divider configured to respond to a voltage control signal applied from the timing controller and to vary the level of the main supply voltage applied from the power supplier to the driver according to emission and non-emission intervals of the luminescent element, wherein the voltage divider includes; a switching element configured to be turned on by the voltage control signal from the timing controller in the non-emission interval of the electroluminescent element and turned off in the emission interval of the electroluminescent element; and first to third resistors connected to differently divide the main supply voltage generated in the power supplier according to the turning on/off of the switching element so that the main supply voltage has a first voltage level in the non-emission interval of the electroluminescent element and a second voltage level lower than the first voltage level in the emission interval of the electroluminescent element, wherein the first resistor includes one electrode connected to an output terminal of the power supplier and the other electrode connected to a first node between the second resistor and a feedback terminal of the power supplier; the second resistor includes one electrode connected to the first node and the other electrode connected to a second node to which the switching element and the third resistor are commonly connected; and the third resistor includes one electrode connected to the second node and the other electrode connected to a ground source.