Samsung Display Co., Ltd.

Yongwoo Lee

Cholho Kim

Gunwoo Yang

Jihoon Yang

Hyunyoung Choi

Gichang Lee

Jiyoung Lee

Hyung Uk Cho

Sang-gu Lee

Yongjo Kim

Sohae Kim

Jisong Chae

A pixel circuit includes a first transistor including a control electrode connected to a second node, a first electrode receiving a first power supply voltage, and a second electrode connected to a third node, a second transistor including a control electrode receiving a write signal, a first electrode connected to a data line, and a second electrode connected to a first node, a third transistor including a control electrode receiving a compensation signal, a first electrode connected to the second node, and a second electrode connected to the third node, a fourth transistor including a control electrode receiving an initialization signal, a first electrode receiving an initialization voltage, and a second electrode connected to a fourth node, a fifth transistor including a control electrode connected to the first node, a first electrode connected to the third node, and a second electrode connected to the fourth node, and a light emit element including a first electrode connected to the fourth node.

Pixel circuit and display apparatus having the same

A gate driver according to an exemplary embodiment of the present inventive concept includes a pull-up-pull-down circuit configured to pull up a gate signal to a high level of a first clock signal in a first duration and configured to pull down the gate signal to a low level of the first clock signal in a second duration, and a pull-down boosting circuit configured to output a first off voltage to the pull-up-pull-down part in the second duration in response to a second clock signal.

Gate driver and display apparatus including the same

A liquid-crystal display including: a gate line extending in a first direction; a gate electrode protruding from the gate line; a gate insulating layer arranged on the gate electrode; an active layer arranged on the gate insulating layer while being insulated from the gate electrode; a data line arranged on the active layer and extending in a second direction; a source electrode protruding from the data line, having a portion overlapping the gate electrode on a plane, and including a plurality of source electrode branches that are separate from each other; a drain electrode being separate from the source electrode, and including a plurality of drain electrode branches, each being arranged between two of the plurality of source electrode branches, and a drain electrode connecting part connecting the plurality of drain electrode branches; a pixel electrode defining a pixel region; a liquid-crystal layer arranged on the pixel electrode.

Liquid-crystal display having alternating source and drain electrode branches

An N-th stage of a gate driver includes a first control circuit, a gate signal generating circuit, a carry signal generating circuit, a second control circuit, a third control circuit, and a holding circuit. The first control circuit controls a first signal in response to a first input signal. The gate signal generating circuit generates a gate signal in response to a clock signal and the first signal. The carry signal generating circuit generates a carry signal in response to the clock signal and the first signal. The second control circuit controls the first signal in response to a second input signal. The third control circuit generates a hold control signal in response to a third input signal having a frequency lower than the clock signal's. The holding circuit maintains levels of the first signal, the gate signal, and the carry signal in response to the hold control signal.

Gate driver and a display apparatus including the same

Growing community of inventors

Gimpo-si, South Korea

Yongwoo Lee