Samsung Display Co., Ltd.

Samsung Electronics Co., Ltd.

Jung-Mi Choi

Hoon Bae Kim

Young-In Hwang

Yong Ho Yang

Eung Taek Kim

Seong Min Wang

Sung Ho Kim

Won-Hoe Koo

Bo-Yong Chung

Kyung Hoon Chung

Kie-Hyun Nam

Seong-Il Park

Joo Hyeon Jo

Young-in Hwang

Seong Baik Chu

Hong Chen

Dong-Gyu Kim

Jin-Koo Chung

Yong-Hwan Park

Mu-Hyun Kim

Keum-Nam Kim

Yong-Jae Kim

Deok-Young Choi

Chul-Kyu Kang

Chul Kyu Kang

Dong-Ki Lee

Dae-Hyun Noh

Jin Koo Chung

Jin-Wook Seong

Ji-Sil Lee

Won-Heo Koo

A display device may include a first substrate, a first barrier layer disposed on the first substrate, a second substrate disposed on the first barrier layer, a second barrier layer disposed on the second substrate, a buffer layer disposed on the second barrier layer, a first charge trap layer disposed on the buffer layer and including silicon oxide, a second charge trap layer disposed on the first charge trap layer, the second charge trap layer including silicon oxide, and having an oxygen atom content smaller than an oxygen atom content of the first charge trap layer, a semiconductor layer disposed on the second charge trap layer and a light emitting element disposed on the semiconductor layer. The display device shows little afterimage and high luminance.

Display device comprising multiple charge trap layers

Provided are a pixel circuit and a display device having the pixel circuit. The pixel circuit includes an organic light emitting diode, a switching transistor, a storage capacitor, and a driving transistor. The switching transistor is turned off when a scan signal has a first voltage and turned on when the scan signal has a second voltage. The storage capacitor stores a data voltage when the switching transistor is turned on in response to the scan signal. The driving transistor is electrically connected with the organic light emitting diode between a high power supply voltage and a low power supply voltage to provide a driving current to the organic light emitting diode, and includes a first bottom gate electrode that is provided with the first voltage. The driving current corresponds to the data voltage stored in the storage capacitor.

Pixel circuit and display device including the same

A pixel includes: an organic light emitting diode; a first transistor including a gate that is connected to a first node, wherein the first transistor is connected between a second node and a third node; a second transistor including a gate that is connected to a corresponding scan line, wherein the second transistor is connected between a data line and the second node; a storage capacitor connected between the first node and a first voltage; a third transistor including a gate that is connected to the corresponding scan line, the third transistor is connected between the first node and the third node; and a fourth transistor connected between a first end of the first transistor and a second voltage.

Pixel and display device using the same

Pixel preventing leakage current and display device using the same

A display panel may include a first OLED disposed in a first sub-pixel region and emitting light of a first color, a second OLED disposed in a second sub-pixel region and emitting light of a second color, a third OLED disposed in a third sub-pixel region and emitting light of a third color, a fourth OLED disposed in a fourth sub-pixel region and emitting light of the second color, a first sub-pixel circuit disposed in the first sub-pixel region and driving the third OLED in the third sub-pixel region, a second sub-pixel circuit disposed in the second sub-pixel region and driving the first OLED in the first sub-pixel region, a third sub-pixel circuit disposed in the third sub-pixel region and driving the fourth OLED in the fourth sub-pixel region, and a fourth sub-pixel circuit disposed in the fourth sub-pixel region and driving the second OLED in the second sub-pixel region.

Display panel of an organic light emitting diode display device having a pentile pixel structure

An organic light-emitting diode display is disclosed. In one aspect, the display includes a display substrate including a display area and a peripheral area surrounding the display area. Scan lines are formed over the display substrate and configured to transmit a scan signal, data lines and driving voltage lines crossing the scan lines are configured to respectively provide a data signal and a driving voltage, and switching elements are electrically connected to the scan lines and data lines. Pixel electrodes are electrically connected to the switching elements, an organic emission layer is formed over the pixel electrodes, and a common electrode is formed over the organic emission layer. A common voltage line is formed substantially parallel to the data lines and configured to transmit a common voltage to the common electrode.

Organic light-emitting diode display

An organic light-emitting display apparatus includes a flexible substrate having a display region and a non-display region located at an outer region of the display region, the non-display region being folded with respect to the display region; at least one organic light-emitting diode (OLED) on the display region of the flexible substrate; and an encapsulation member encapsulating the display region.

Organic light-emitting display apparatus and method of manufacturing the same

An organic light emitting display device includes a substrate comprising a major surface; a display region and a peripheral region surrounding the display region when viewed in a viewing direction perpendicular to the major surface; an array of a plurality of pixels disposed in the display region; and a first power line extending from the peripheral region into the display region, the first power line being electrically connected to the array of pixels at a contact point in the display region. When viewed in the viewing direction, the first power line includes: a first extension extending from the peripheral region to the display region; and a second extension connected to the first extension; and a third extension connected to the second extension and extending from a location in the display region toward the peripheral region.

Power lines disposed in organic light emitting display device

A method of forming a pattern may include: disposing a first material layer; disposing a first photoresist film including first shot regions; exposing the first shot regions to light, wherein an overlapping region between first shot regions may be overlappingly exposed to light exposures onto the first shot regions; forming a first photoresist pattern by developing the first photoresist film; forming a first pattern by etching the first material layer using the first photoresist pattern as an etching mask; disposing a second material layer on the first pattern; disposing a second photoresist film including second shot regions; exposing the second shot regions, wherein a boundary region between second shot regions may be disposed spaced apart from the overlapping region; forming a second photoresist pattern by developing the second photoresist film; and forming a second pattern by etching the second material layer using the second photoresist pattern as an etching mask.

Method of forming patterns and methods of manufacturing display panels using methods of forming patterns

A driving circuit includes: an input terminal; an output terminal; a first transistor having a source electrode coupled to the input terminal, a drain electrode coupled to the output terminal, and a gate electrode; a second transistor having a source electrode, a drain electrode, and a gate electrode respectively coupled to the source electrode, the drain electrode, and the gate electrode of the first transistor; a first capacitor having a first electrode coupled to the input terminal and a second electrode coupled to the output terminal; and a second capacitor coupled in parallel with the first capacitor and having a first electrode coupled to the first electrode of the first capacitor and a second electrode that is floated.

Driving circuit having extra transistor or capacitor, and flat panel display device including the driving circuit

A gate driver includes a plurality of stages respectively outputting a plurality of gate output signals. An N-th stage of the gate driver (where N is a positive integer) includes a first input part, a second input part, a pull up part, a pull down part, a holding part and a stabilizing part. The first input part transmits a first clock signal to a second node in response to a signal at a first node. The second input part transmits an input signal to the first node in response to a second clock signal. The pull up part pulls up the gate output signal in response to a signal at the second node. The pull down part pulls down the gate output signal in response to the signal at the first node. The holding part maintains the signal at the second node in response to the first clock signal. The stabilizing part stabilizes the gate output signal in response to the signal at the second node and a third clock signal.

Gate driver, method of driving display panel using the same and display apparatus having the same

A display device may include a display area for displaying an image. The display device may further include a peripheral area that surrounds the display area. The display device may further include a pixel disposed in the display area. The display device may further include a bus line disposed in the peripheral area and configured to transmit a signal. The display device may further include a connection conductor set electrically connected to the bus line. The display device may further include a branch line electrically connected to the connection conductor set, configured to receive the signal from the bus line, and configured to transmit the signal to the pixel, wherein a portion of the branch line is disposed in the display area.

Display device and manufacturing method thereof

Provided is an organic light emitting display device. The device includes an organic electroluminescence element in which a pixel electrode, an intermediate layer including a light emitting layer, and a cathode electrode are successively stacked, a cathode contact including an upper electrode contacting the cathode electrode and a lower electrode disposed on the same layer as the pixel electrode to contact the upper electrode, and a line disposed on the same layer as the lower electrode. At least three cathode contacts are disposed in a direction crossing the line, and the line is disposed between the cathode contacts.

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Seoul, South Korea

Jung-Mi Choi