Samsung Display Co., Ltd.

Choongsun Shin

Ohjo Kwon

A sensing apparatus that senses electrical signals of a plurality of pixels arranged in rows or columns. The sensing apparatus includes a plurality of sensing circuits configured to sense electrical signals through sensing lines that correspond to the columns of the pixels, a first switch configured to connect a first sensing line of the sensing lines that corresponds to a first pixel column of the columns of the pixels and a first sensing circuit of the sensing circuits that corresponds to the first pixel column; and a second switch configured to connect the first sensing line and a second sensing circuit of the sensing circuits different from the first sensing circuit.

Sensing apparatus, display apparatus, and method of sensing electrical signal

An organic light-emitting display apparatus including a display including pixels arranged in an array, a sensor for detecting respective current characteristics of the pixels, a current sensor for receiving a first current from a first pixel of the pixels, for outputting a first voltage corresponding to the first current, for receiving a second current from a second pixel of the pixels, and for outputting a second voltage corresponding to the second current, a level shifter for receiving the first and second voltages and for generating first and second shift voltages respectively corresponding to the first and second voltages, an intermediate voltage of the first and second voltages being equal to a conversion reference voltage, and an analog-to-digital converter for receiving the first and second shift voltages and for outputting a digital value corresponding to a difference between the first and second shift voltages based on the conversion reference voltage.

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Yongin, South Korea

Choongsun Shin