ORGANIC LIGHT-EMITTING DISPLAY APPARATUS AND METHOD OF DRIVING THE SAME

摘要

An organic light-emitting display apparatus includes a plurality of pixels, each including: an organic light emitting diode (OLED); a driving transistor; and a first node therebetween; a sensor for sensing a first current from the driving transistor when a first reference voltage is applied to the first node and sensing a second current from the driving transistor when a second reference voltage is applied to the first node, when a first source data signal, corresponding to a first gray level, is transferred to a corresponding one of the pixels; a driving current determiner for generating characteristic information of the driving transistor based on the first and the second currents and determining a driving current of the driving transistor, corresponding to the first gray level, based on the characteristic information of the driving transistor and current-voltage information of the OLED, which is stored in the memory.

主权项

1. An organic light-emitting display apparatus comprising:
a plurality of pixels, each comprising:
an organic light-emitting diode (OLED); anda driving transistor configured to supply a driving current to the OLED via a first node; a sensor configured to:
sense a first current flowing from the driving transistor in a state in which a first reference voltage is applied to the first node; andsense a second current flowing from the driving transistor in a state in which a second reference voltage is applied to the first node,when a first source data signal, corresponding to a first gray level, is transferred to the a corresponding one of the pixels; a memory configured to store current-voltage information of the OLED; and a driving current determiner configured to:
generate characteristic information of the driving transistor based on:
the first current when the first reference voltage is applied; andthe second current when the second reference voltage is applied; anddetermine a driving current of the driving transistor, corresponding to the first gray level, based on the characteristic information of the driving transistor and the current-voltage information of the OLED.