Patent ID: 9064458
Filing Date: 2015-06-23
Classification: G09G

Abstract:
1. A driving method of an organic light emitting display, the method comprising: (a) initializing voltages of respective nodes of a plurality of pixel circuits included in respective pixels by concurrently applying a first power, a second power, scan signals, control signals, and data signals, all having voltage values at respective levels, to all of the pixels in a display unit; (b) decreasing a voltage of an anode electrode of an organic light emitting diode (OLED) included in the respective pixels below a voltage of a cathode electrode of the OLED by concurrently applying the first power, the second power, the scan signals, the control signals, and the data signals, all having the voltage values at respective levels, to all of the pixels, wherein (b) occurs after (a), and the voltage value of at least one of the first power or the second power in (b) is different from that applied in (a); (c) storing a threshold voltage of a driving transistor included in the respective pixels by concurrently applying the first power, the second power, the scan signals, the control signals, and the data signals, all having the voltage values at respective levels, to all of the pixels; (d) applying the scan signals sequentially to the pixels coupled to scan lines of the display unit and applying the data signals to the pixels by each of the scan lines corresponding to the sequentially applied scan signals; (e) light-emitting concurrently all of the pixels at brightness corresponding to the data signals stored in the respective pixels by concurrently applying the first power, the second power, the scan signals, the control signals, and the data signals, all having the voltage values at respective levels, to all of the pixels; and (f) turning off emission of the pixels by concurrently applying the first power, the second power, the scan signals, the control signals, and the data signals, all having the voltage values at respective levels, to all of the pixels and thus lowering the voltage of the anode electrode of the OLED included in the respective pixels, wherein (f) occurs after (e) in a same frame.