Samsung Display Co., Ltd.

Byunghyuk Shin

Jaehoon Lee

Jinwoo Kim

Kyungsu Lee

Joosun Yoon

Haegoo Jung

Dohyung Ryu

Donghak Pyo

Ikhyun Ahn

Junhan Ko

SoYoung Kim

Jaewoo Song

Byeongdoo Kang

A display apparatus includes pixels, each of the pixels including a light-emitting diode, a first transistor connected to a driving voltage line and the light-emitting diode, a second transistor connected to the first transistor and the light-emitting diode, a third transistor connected to the second transistor and a first initialization voltage line, and a fourth transistor connected to the light-emitting diode and a second initialization voltage line. During a frame, each of the pixels operates in a first scan period and a second scan period. The first scan period includes a write-period in which a data signal is supplied and a first emission period in which the pixel is configured to emit light at a brightness corresponding to the data signal.

Display apparatus and method of driving pixel

A display device includes a display panel which displays an image, and a panel driving block which receives a control signal and generating a criterion point signal including information about a criterion point for adjusting luminance of the image based on the control signal. The panel driving block receives image signals, generates a correction value based on distance information about a location of the display panel, at which each of the image signals is displayed, and the criterion point, and generates correction image signals by converting the image signals based on the correction value.

Display device

A clock and voltage generation circuit includes a voltage generator which generates a first gate high voltage, a first gate low voltage, a second gate high voltage, and a second gate low voltage, a first level shifter which generates a first gate clock signal which swings between the first gate high voltage and the first gate low voltage in synchronization with a gate pulse signal, and a second level shifter which generates a second gate clock signal which swings between the second gate high voltage and the second gate low voltage in synchronization with the gate pulse signal. The voltage generator lowers the second gate high voltage to a voltage level of a kickback reference voltage in response to a kickback signal, and the first gate low voltage and the second gate high voltage are gate-on voltages, and the first gate high voltage and the second gate low voltage are gate-off voltages.

Clock and voltage generation circuit and display device including the same

A power supply device includes: a feedback controller configured to detect a feedback voltage based on an output voltage of a power output line connected to a power input line to which a power supply voltage is supplied; a voltage controller configured to detect a level change of the power supply voltage based on the feedback voltage; and a voltage generator configured to adjust the power supply voltage according to the detected level change.

Power supply device and organic light emitting display apparatus including the same

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Yongin, South Korea

Byunghyuk Shin