Patent ID: 9041746
Filing Date: 2015-05-26
Classification: G09G

Abstract:
1. A driving method of an OLED (organic light emitting diode) display device having a plurality of pixels each including an OLED which emits light in response to pixel data, comprising: applying black data to the pixels during a predetermined period directly after system power is applied; supplying driving voltages to the OLEDs in an initial driving process for applying the black data to the pixels; detecting a driving current flowing through the OLEDs by the black data at a first non-emission period after at least one frame has elapsed from a time point where the driving voltages are supplied to the OLEDs; and applying pixel data to the pixels for normal driving subsequent to the initial driving process, wherein only the black data is applied to the pixels during the predetermined period, wherein the predetermined period for the initial driving process is from before the driving voltage is applied to the OLEDs until the pixel data is output to the pixels for the normal driving, wherein the first non-emission period indicates a vertical blank period, and wherein a data enable signal is maintained at a low logic level in the vertical blank period so that the pixel data and the black data are not written to the pixels.