Organic light emitting display device

摘要

An organic light emitting display includes a display panel, a power supply circuit, a voltage detection unit and a voltage compensation unit. The display panel includes a plurality of pixels. The power supply circuit outputs a first power source to the display panel. The voltage detection unit is positioned between the display panel and the power supply circuit, and detects a detection voltage data of the first power source output from the power supply circuit. The voltage compensation unit compares the detection voltage data with a previously stored reference voltage data, and controls the power supply circuit to output the first power source having a voltage level set based on the reference voltage data.

主权项

1. An organic light emitting display device, comprising:
a display panel including a plurality of pixels; a power supply circuit configured to output a first power source to the display panel, the power supply circuit being disposed on a first board; a voltage detection unit disposed between the display panel and the power supply circuit, the voltage detection unit detecting a detection voltage data of the first power source output from the power supply circuit; a voltage compensation circuit configured to compare the detection voltage data with a previously stored reference voltage data, and control the power supply circuit to output the first power source having a voltage level set based on the reference voltage data; and a second board disposed between the display panel and the first board, the second board including the voltage detection unit and the voltage compensation circuit, wherein the voltage compensation circuit includes an electrically erasable programmable read-only memory (EEPROM) configured to store the reference voltage data therein, a micro controller unit (MCU) configured to compare the detection voltage data with the reference voltage data and calculate a compensation value set based on a result of comparing the detection voltage data with the reference voltage data, and a digital-analog converter (DAC) configured to convert the compensation value into an analog signal.