Samsung Display Co., Ltd.

Soongi Kwon

Chulkyu Kang

Jihyun Ka

Kimyeong Eom

Haijung In

Minjeong Kim

Minku Lee

Wonkyu Kwak

Yangwan Kim

Sujin Kim

Minwoo Byun

Jintae Jeong

Seunghee Lee

Minjoo Kim

Kyonghwan Oh

Chaehan Hyun

Hyeongjun Jin

Seoni Jeong

Sungchan Hwang

A driver includes a stage that includes a first controller, a second controller, and a first output unit. The first controller controls a voltage level of a first node. The second controller controls voltage levels of a second node and a third node to be equal to the voltage level of a first node or an opposite voltage level of the voltage level of the first node, and controls a voltage level of a fifth node to be equal to the opposite voltage level of the voltage level of the first node. The first output unit may output a gate control signal, which has a first voltage when the second node and the third node is in an on-voltage level state, and has a second voltage when the fifth node is in an on-voltage level state.

Emission control driver including a stage with first and second pull-up transistors that output an output signal

A scan driver includes a stage, wherein the stage includes: a first output controller including a first pull-up transistor and a first pull-down transistor, wherein the first pull-up transistor has a gate connected to a first control node, and the first pull-down transistor has a gate connected to a second control node; a second output controller including a second pull-up transistor and a second pull-down transistor, wherein the second pull-up transistor has a gate connected to the first control node, and the second pull-down transistor has a gate connected to the second control node; and a stabilizer configured to maintain the first control node at an off-voltage level based on the second control node being at an on-voltage level.

Scan driver

Provided is a display apparatus in which initialization and compensation of a pixel is implemented through a pixel including a thin film transistor connected to a node between a driving transistor and a light emitting diode.

Display apparatus

Emission control driver including a stage that sets a gate control signal at different times to a first voltage and a second voltage

A pixel includes a display element, a driving transistor, a storage capacitor, a scan transistor, and a gate control circuit. The display element may emit light for an emission period, wherein the display element includes an anode and a cathode. The driving transistor may control an amount of a driving current flowing through the display element, wherein the driving transistor includes a first gate and a second gate. The storage capacitor is electrically connected to the first gate of the driving transistor. The scan transistor may be turned on for a data-write period for transferring a data voltage to the driving transistor. The lower gate control circuit may electrically connect the second gate of the driving transistor to the anode of the display element for the emission period, and may apply a bias voltage to the second gate of the driving transistor for the data-write period.

Pixel and display apparatus

A pixel capable of adjusting a threshold voltage of a driving transistor, the pixel including: a display element configured to emit light during an emission period and including an anode and a cathode, the first transistor including an upper gate and a lower gate and configured to control a magnitude of a driving current flowing to the display element, a storage capacitor connected to the upper gate of the first transistor, and a second transistor configured to be turned on during a data writing period to transmit a data voltage to the first transistor, wherein a lower gate-source voltage of the first transistor has a first voltage level in the data writing period and a second voltage level in the emission period.

Pixel capable of adjusting a threshold voltage of a driving transistor

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Yongin-si, South Korea

Soongi Kwon