Samsung Display Co., Ltd.

Samsung Mobile Display Co., Ltd.

Kwang-Hae Kim

Kwan-Wook Jung

Jae-Beom Choi

June-Woo Lee

Jong-Hyun Choi

Seong-Hyun Jin

Jae-Hwan Oh

Moo-Jin Kim

Chun-Gi You

Jong-Hyun Park

Young-Jin Chang

Ga-Young Kim

Kyoung-Bo Kim

Sun Young Park

Yong-Sung Park

Yul-Kyu Lee

Won-Kyu Lee

Gun-Shik Kim

Jun-Sik Oh

Sun Hee Park

Se-Hun Park

Yong-Woo Park

Hun-Tae Kim

Ki-ju Im

Han-Hee Yoon

Sung-Won Doh

A pixel includes an organic light emitting diode (OLED), a first transistor, a first capacitor, a second capacitor, and a pixel circuit. The OLED includes a cathode electrode connected to a second power source. The first transistor is connected between a data line and a first node, and turns on when a scan signal is supplied to a scan line. The first capacitor is connected between the first node and a third power source. The second capacitor is connected between the first node and a fourth power source. The pixel circuit controls a current quantity flowing from a first power source to the second power source through the OLED based on a voltage of the first node.

Pixel with multiple capacitors and organic light emitting display

A thin film transistor (TFT) array substrate is provided that includes a TFT on a substrate. The TFT can include an active layer, gate electrode, source electrode, drain electrode, first insulating layer between the active layer and the gate electrode, and second insulating layer between the gate electrode and the source and drain electrodes. A pixel electrode is disposed on the first and second insulating layers. A capacitor including a lower electrode is disposed on a same layer as the gate electrode and an upper electrode. A third insulating layer directly between the second insulating layer and the pixel electrode and between the lower electrode and the upper electrode. A fourth insulating layer covers the source electrode, the drain electrode, and the upper electrode, and exposes the pixel electrode and can further expose a pad electrode.

Method of manufacturing thin film transistor (TFT) array substrate

A thin film transistor (TFT) substrate, an organic light-emitting display apparatus including the TFT substrate, and a method of manufacturing the TFT substrate that enable simple manufacturing processes and a decrease in the interference between a capacitor and other interconnections are disclosed. The TFT substrate may include a substrate, a TFT arranged on the substrate, the TFT including an active layer, a gate electrode, a source electrode, and a drain electrode, a pixel electrode electrically connected to one of the source electrode and the drain electrode, and a capacitor including a lower capacitor electrode and an upper capacitor electrode, the lower capacitor electrode formed from the same material as the active layer and arranged on the same layer as the active layer, and the upper capacitor electrode formed from the same material as the pixel electrode.

Thin-film transistor substrate, method of manufacturing same, and organic light-emitting display apparatus including thin-film transistor substrate

A driving method of a display device is disclosed. According to one aspect, the method includes applying a first voltage of a predetermined level to an anode of a plurality of organic light emitting diodes (OLEDs) included in a plurality of pixels. A plurality of driving transistors are driven to be connected to the plurality of OLEDs. The method further includes transmitting a first power source voltage of a logic high level to the anode of the plurality of OLEDs as a threshold voltage to compensate a threshold voltage of the plurality of driving transistors, and applying a data voltage to a plurality of pixels as a data writing step turning on a plurality of driving transistors. The second power source voltage applied to the cathode of the plurality of OLEDs is changed to a second voltage of the logic low level in a state in which a plurality of driving transistors are turned on. In the turned on state, light is emitted from the plurality of OLEDs.

Display device and active matrix driving method thereof

Thin-film transistor substrate and organic light-emitting display apparatus including thin-film transistor substrate

An organic light emitting display apparatus includes: a substrate on which a display area and a non-display area are defined; a first electrode disposed over the display area; an intermediate layer that is disposed over the first electrode and includes an organic emissive layer; a second electrode disposed over the intermediate layer; and a plurality of detection patterns displaced over the non-display area, each of which includes a first electrically conductive pattern layer formed of the same material as the first electrode and a second electrically conductive pattern layer that is formed over the first electrically conductive pattern layer.

Organic light emitting display apparatus and method of inspecting patterns of the organic light emitting display apparatus

Thin film transistor array substrate, organic light-emitting display device including the same, and method of manufacturing the organic light-emitting display device

An organic light-emitting display device includes a gate electrode, a source electrode, and a drain electrode on a substrate, a gate interconnection line connected to the gate electrode, a source and drain interconnection line connected to the source and drain electrodes, a first test pad electrically connected to the source and drain interconnection line, and a second test pad electrically connected to the gate interconnection line. The second test pad is at a same level as the first test pad, and the gate electrode is on a different layer than the source and drain electrodes.

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

An organic light-emitting display device includes a capacitor lower electrode that includes a semiconductor material doped with ion impurities. A first insulating layer covers an active layer and the capacitor lower electrode. A gate electrode includes a gate lower electrode formed of a transparent conductive material and a gate upper electrode formed of metal. A pixel electrode is electrically connected to the thin film transistor. A capacitor upper electrode is at the same level as the pixel electrode. An etch block layer is formed between the first insulating layer and the capacitor upper electrode. Source and drain electrodes are electrically connected to the active layer. A second insulating layer has an opening completely exposing the capacitor upper electrode. A third insulating layer exposes the pixel electrode. An intermediate layer includes an emissive layer. An opposite electrode faces the pixel electrode.

An OLED device includes: a TFT including an active layer, gate, source and drain electrodes, a first insulating layer between the active layer and the gate electrode, and a second insulating layer between the source and drain electrodes, a pixel electrode on the first and second insulating layers, connected to one of the source and drain electrodes, a capacitor including a first electrode on the same layer as the active layer, a second electrode on the same layer as the gate electrode, and a third electrode formed of the same material as the pixel electrode, a third insulating layer between the second insulating layer and the pixel electrode and between the second and third electrodes, a fourth insulating layer covering the source, drain and third electrodes, exposing a portion of the pixel electrode, an organic light-emitting layer on the pixel electrode, and a counter electrode on the organic light-emitting layer.

An organic light-emitting display apparatus includes a first insulating layer, a second insulating layer on the first insulating layer and including an unevenness portion, a third insulating layer on the second insulating layer, a pixel electrode on the third insulating layer, an opposite electrode facing the pixel electrode, and an organic emission layer between the pixel electrode and the opposite electrode; a thin film transistor including an active layer, a gate electrode, and source/drain electrodes connected to the active layer, the first insulating layer being between the active layer and the gate electrode and the second insulating layer being between the gate electrode, and the source/drain electrodes; and a capacitor including a lower electrode on a same layer as the gate electrode, a dielectric layer of a same material as the third insulating layer, and an upper electrode on a same layer as the pixel electrode.

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

An organic light-emitting display device comprises: a lower substrate; an upper substrate facing the lower substrate; and a spacer formed in a sealed space between the lower substrate and the upper substrate and dividing the space into two or more sections; wherein air holes are formed in the spacer and allow air to flow between the sections of the space.

In an organic light-emitting display apparatus and a method of manufacturing the same, a pad region of the organic light-emitting display apparatus comprises a protrusion layer including a plurality of protrusion portions formed on a substrate so as to protrude, a pad lower electrode and a pad upper electrode, the pad lower electrode including a protrusion portion formed along a protrusion outline of the protrusion layer and a flat portion formed along the substrate, and the pad upper electrode being formed on the flat portion of the pad lower electrode. A source/drain electrode layer is formed on the pad upper electrode, an organic layer is formed on the source/drain electrode layer, and a counter electrode layer is formed on the protrusion portion of the pad lower electrode and the organic layer. The counter electrode layer follows the protrusion outline of the protrusion layer on the protrusion portion. According to such a structure, cost is reduced due to a reduction in the number of masks, the manufacturing process is simplified, and a lifting phenomenon of the organic layer in the pad region is solved.

Organic light-emitting display apparatus that prevents a thick organic insulating layer from lifting

A thin film transistor array substrate includes a thin film transistor on a substrate, the thin film transistor including an active layer, a gate electrode, a source electrode, and a drain electrode; a capacitor including a lower electrode in a same layer as the active layer and an upper electrode in a same layer as the gate electrode; a pixel electrode in a same layer as the gate electrode and the upper electrode; a first insulation layer between the active layer and the gate electrode and between the lower electrode and the upper electrode; a second insulation layer on the first insulation layer, a protection layer extending along side surfaces of the lower electrode, and a third insulation layer on the protection layer and exposing the pixel electrode.

Thin film transistor array substrate, organic light emitting display device including the same, and manufacturing method of the thin film transistor array substrate

A method of manufacturing an organic light emitting diode display, the method including forming an amorphous silicon layer on a buffer layer disposed on substrate, heat-treating the amorphous silicon film to form a microcrystalline silicon film; and scanning and irradiating a linear laser beam twice or more onto the microcrystalline silicon film to form a polysilicon film, wherein a subsequent scanning of the linear laser beam partially overlaps previous scanning of the linear laser beam in a width direction.

Growing community of inventors

Yongin, South Korea

Kwang-Hae Kim