Lg Display Co., Ltd.

Yiyeon Hwang

Jongsin Park

Sungwon Lee

Munchae Yoon

Sungwook Choi

The present disclosure provides a light-emitting display including a display panel, a first circuit, a second circuit, and a compensation circuit. The display panel includes a pixel having an organic light-emitting diode. The first circuit supplies a data voltage to the pixel. The second circuit performs a first sensing operation for sensing a voltage stored at an anode of the organic light-emitting diode and a second sensing operation for sensing a parasitic capacitance of the organic light-emitting diode. The compensation circuit compensates for degradation of the organic light-emitting diode based on a sensed value outputted from the second circuit.

Light-emitting display for compensating degradation of organic light-emitting diode and method of driving the same

Embodiments are directed to a display device having a display panel, a driving circuit, a sensing circuit, and a compensation circuit. The driving circuit provides a preset sensing voltage to a pixel of the display panel. The sensing circuit senses a pixel current generated by the pixel. The sensing circuit includes a sensing circuit that generates an integrated voltage signal indicative of the pixel current, and an offset circuit for adding an offset to the integrated voltage signal. The offset is based on a previously stored compensation amount for the pixel. The compensation circuit determines a new compensation amount for the pixel based on the offset integrated voltage. Additionally, the compensation circuit compensates a display voltage of the pixel by the new compensation amount in a subsequent display frame of the display device.

Growing community of inventors

Paju-si, South Korea

Yiyeon Hwang