Samsung Display Co., Ltd.

Korea Advanced Institute of Science and Technology

Gyu Wan Lim

Keum Dong Jung

Hyun Sik Kim

Gyeong Gu Kang

Hyung Gun Ma

Moon Jae Jeong

Oh Jo Kwon

Seong Joo Lee

Seok Tae Koh

A data driving circuit includes: a resistor string in which a plurality of resistors are connected in series; and a plurality of data channels connected to a high voltage node, intermediate voltage nodes, and a low voltage node of the resistor string and configured to convert a digital data signal into an analog data voltage. Each of the plurality of data channels includes: a main digital-to-analog converter connected to the high voltage node, the intermediate voltage nodes, and the low voltage node, a multiplier connected to an output terminal of the main digital-to-analog converter, a sub digital-to-analog converter connected to some of the high voltage node, the intermediate voltage nodes, and the low voltage node, and a voltage synthesizer connected to an output terminal of the multiplier and an output terminal of the sub digital-to-analog converter.

Data driving circuit and display device including the same

An output buffer is disclosed that includes: a buffer circuit that outputs an output signal to an output terminal based on a first input signal provided to a first input terminal and a second input signal provided to a second input terminal; and a current supply circuit that is connected in parallel to the buffer circuit, and provides an auxiliary current to the output terminal based on the first input signal and the second input signal.

Output buffer, data driver, and display device having the same

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Daejeon, South Korea

Gyu Wan Lim