Abstract:
An organic light-emitting display includes: a pixel comprising a pixel circuit; a power supply configured to supply a first power voltage to the pixel circuit; a voltage divider configured to generate a power division voltage by dividing the first power voltage; a converter configured to generate a first digital value by performing an analog to digital (A/D) conversion of the power division voltage; a storage unit configured to store a first reference digital value generated by the converter, the first reference digital value corresponding to a first reference voltage and a second reference digital value generated by the converter, the second reference digital value corresponding to a second reference voltage that is different from the first reference voltage; and a voltage level determiner configured to determine a level of the first power voltage based on the first digital value, the first reference digital value, and the second reference digital value.
Abstract:
A power supply device includes: a feedback controller configured to detect a feedback voltage based on an output voltage of a power output line connected to a power input line to which a power supply voltage is supplied; a voltage controller configured to detect a level change of the power supply voltage based on the feedback voltage; and a voltage generator configured to adjust the power supply voltage according to the detected level change.