Lg Display Co., Ltd.

Kyung Hyun Lim

Ji Su Choi

Myung Gi Lim

Jin Woo Lee

Sang Goo Jeong

Yu Hee Kim

An electroluminescent display apparatus includes a display panel, a sensing circuit performing a first sensing process on some pixels of the display panel to obtain a normal sensing value during a first sensing period and performing a second sensing process on all pixels of the display panel to obtain a temporary sensing value during a second sensing period, and a compensation circuit calculating a temporary sensing deviation value between adjacent pixels, based on the temporary sensing value, obtaining a compensation value for the some pixels, based on the normal sensing value, and obtaining a delta compensation value for the other pixels except the some pixels, based on the normal sensing value and the temporary sensing deviation value.

Electroluminescent display apparatus and driving method thereof

The present disclosure provides a display device including a first subpixel configured to emit light and a second subpixel; a high-potential voltage line connected to the first subpixel and the second subpixel to deliver a high-potential voltage; a low-potential voltage line connected to the first subpixel and the second subpixel configured to deliver a low-potential voltage; and a circuit connected to the low-potential voltage line and configured to sense a value corresponding to the low-potential voltage line during operation of the second subpixel and compensate for a data signal to be supplied to the first subpixel based on the value.

Display device capable of subpixel compensation based on sensing through low-potential voltage line and method of driving the same

The present disclosure relates to an electroluminescent display device and a method for sensing electrical characteristics thereof, and the electroluminescent display device includes a display panel including a plurality of pixels including a sensing pixel and a non-sensing pixel connected to each data line, the plurality of pixels sharing one sensing line, a sensing circuit configured to sense an electrical characteristic value of the sensing pixel based on a sensing voltage applied to the shared sensing line, and a feedback unit configured to apply a feedback voltage according to the sensing voltage applied to the shared sensing line to the data line of the non-sensing pixel.

Electroluminescent display device and method for sensing electrical characteristics thereof

An electroluminescence display apparatus includes a pixel including a driving element generating a driving current, a data line connected to the pixel to transfer a data voltage needed for generating the driving current, a reference voltage line connected to the pixel to transfer a first reference voltage and/or a second reference voltage needed for generating the driving current, and a driving & sensing circuit configured to perform an integral on the driving current input through the reference voltage line, output an integral result to the data line, decrease a voltage of the data line from the data voltage to an off voltage for turning off the driving element, and detect an off voltage of the driving element from the data line.

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Seoul, South Korea

Kyung Hyun Lim