Samsung Display Co., Ltd.

Samsung Electronics Co., Ltd.

Kyoung Ju Shin

Jun Hyun Park

Sung Hwan Kim

Dong Woo Kim

Hak Sun Chang

Bo Yong Chung

Chong Chul Chai

Jun Woo Lee

Keum Nam Kim

Hee Wook Do

Kyoung Tae Kim

Yong Hwan Shin

Hyun Wuk Kim

Se Young Song

Chong Chui Chai

Baek Kyun Jeon

Yeon Ho Kim

Suk Hoon Kang

Young-Gu Kim

Min-Sik Jung

Seung H Yoo

Hyun Joon Kim

Seung-Hoon Lee

Bong Hyun You

Jae Keun Lim

Cheol-Gon Lee

Jong Hee Kim

Jung-taek Kim

Kyoung Won Lee

Chang Yong Jeong

Cheol Gon Lee

Cheol Woo Park

Yun-Ki Baek

Sang Uk Lim

Ji Tae Kim

Hee Ju Ma

Sung Rak Hong

Alexander Ward

A pixel includes a plurality of transistors, a storage capacitor, and an organic light emitting diode. A first transistor controls the amount of current from a first driving power source to the organic light emitting diode based on a data voltage. A second transistor is connected to a data line and is turned on based on a scan signal. A third transistor coupled to the first transistor and is turned on based on the scan signal. A first stabilizing transistor is coupled to the third transistor or between the first and third transistors and is turned off when the third transistor is turned off.

Pixel and organic light emitting display device having the pixel

A pixel includes a light emitting element, a first transistor connected to the light emitting element, a second transistor connected between a data line and a first electrode of the first transistor, a third transistor connected between a gate electrode of the first transistor Tand a second electrode of the first transistor, a fourth transistor connected between a gate electrode of the first transistor and an initialization power source, and a storage capacitor connected between the first power source and the gate electrode of the first transistor. A voltage provided through the data line is time divided into a data voltage provided to the gate electrode of the first transistor when both the second and third transistors turn on, and an on-bias voltage provided to the first electrode of the first transistor when the second transistor turns on and the third transistor turns off.

Pixel and display device including the same

A pixel includes an organic light emitting diode, a first transistor, a second transistor, and a third transistor. The first transistor includes a first electrode, a second electrode, and a gate electrode and may control a current applied to the organic light emitting diode from a first power source, wherein the gate electrode is electrically connected to a first node. The second transistor is electrically connected between the organic light emitting diode and the second electrode of the first transistor and may turn on in response to a first emission control signal. The third transistor is electrically connected between the first power source and the first electrode of the first transistor and may turn on in response to a second emission control signal. The second transistor may turn on two or more times during one frame. The third transistor may turn on exactly once in the one frame.

Pixel and organic light emitting display device including pixel

A scan driver, includes a plurality of stage circuits, each of which includes a driving circuit unit providing an output signal and an inverter inverting the output signal of the driving circuit unit and generating a scan signal, in which the inverter includes a first transistor and a second transistor, which are complementarily operated, the first transistor is a P-type polysilicon transistor, and the second transistor is an N-type oxide semiconductor transistor. A display device may include the scan driver.

Scan driver and display device including the same

In a scan driver including a plurality of stages configured to supply scan signals to scan lines, the scan driver includes: an i&#x2212;1stage configured to supply an i&#x2212;1scan signal to an i&#x2212;1scan line while controlling a node Qi&#x2212;1 (i is a natural number) in response to a first clock signal, a third clock signal, and a control voltage; an istage configured to supply an iscan signal to an iscan line while controlling a node Qi in response to a second clock signal, a fourth clock signal, and the control voltage; and a controller connected to the i&#x2212;1stage and the istage, and configured to supply the control voltage.

Scan driver

A stage includes first, second, and third outputs and first and second signal processors. The first output supplies a scan signal to a first output terminal based on signals to first and second input terminals and the voltage of a first node. The second output is connected to a first power source and supplies an emission control signal to a second output terminal based on signals to the first input terminal, the first output terminal, and a third input terminal. The third output is connected to the first power source and supplies an inverted emission control signal to a third output terminal based on signals to the first input terminal and second output terminal. The first signal processor controls the first node voltage based on a signal to a fourth input terminal. The second signal processor controls the first node voltage based on the signal to the second input terminal.

Stage and organic light emitting display device using the same

Pixel including a pair of transistors in a current leakage path and organic light emitting display device having the pixel

A liquid crystal display includes a first substrate, a gate line disposed on an upper portion of the first substrate, a gate insulating layer disposed on the gate line, a semiconductor layer disposed on the gate insulating layer, a data line and a drain electrode disposed on the semiconductor layer, a passivation layer which covers the data line and the drain electrode and defines a contact hole which exposes a part of the drain electrode, a common electrode provided at an upper portion of the passivation layer and having a planar structure, a pixel electrode electrically connected to the drain electrode through the contact hole and including a plurality of pixel branch electrodes, and a second substrate corresponding to the first substrate, where an opening is defined in the common electrode at a position which corresponds to a middle region of the plurality of pixel branch electrodes.

Liquid crystal display

There is provided a stage circuit capable of minimizing a mounting area. The stage circuit includes: an output unit configured to supply a voltage of a first node, an i-th (i is a natural number) carry signal, and to supply an i-th scan signal in response to the voltage of the first node, a voltage of a second node, and a first clock signal, a controller configured to control the voltage of the second node in response to the first clock signal; a pull-up unit configured to control the voltage of the first node in response to a carry signal of a previous stage and a voltage of a first node of the previous stage, and a pull-down unit configured to control the voltage of the first node in response to the voltage of the second node and a carry signal of a next stage.

Stage circuit and scan driver using the same

A gate driving circuit includes: a plurality of stages configured to output a plurality of gate signals, wherein an Nth stage of the plurality of stages includes: an output pull-up unit including a control electrode connected to a first node, wherein the output pull-up unit is configured to increase an electric potential at the first node and is further configured to receive a clock signal and to output a gate signal of the Nth stage; a control node pull-up unit configured to charge the first node according to an (N&#x2212;1)th control signal and an (N&#x2212;2)th control signal; a control node pull-down unit configured to discharge a voltage of the first node as a first low voltage according to an (N+1)th control signal; and an output pull-down unit configured to discharge a gate signal of the Nth stage as the first low voltage according to the (N+1)th control signal.

Gate driving circuit and display device including the same

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Yongin-si, South Korea

Kyoung Ju Shin