Lg Display Co., Ltd.

Hee-Dong Choi

Seong-Moh Seo

Hye-Young Choi

Seung-Joon Jeon

Jun-Min Lee

Byung-Chul Ahn

Min-Jic Lee

Ki-Sul Cho

Gwi-Jeong Cho

Chang-Hoon Lee

So-Yeon Ahn

Doo-Seok Yang

Tae-Shick Kim

Chang-Wook Han

Sang-Gul Lee

Hong-Seok Choi

Seung-Ryong Joung

Jae-Hee Park

Jeong-Haeng Heo

Jae-Man Lee

Jin-Chae Jeon

Sam-Min Ko

Byeong-Gyu Roh

Hyung-Gu Roh

Hoe-Yong Kim

An organic electroluminescent device and organic electroluminescent display device having enhanced efficiency are discussed. In one example, the organic electroluminescent device includes first and second electrodes facing each other on a substrate and at least two emission layers formed between the first and second electrodes and realizing blue light, wherein, among the emission layers, a first blue emission layer close to the first electrode includes a first blue dopant having a different maximum luminescence wavelength than that of a second blue dopant of a second blue emission layer close to the second electrode.

Organic electroluminescent device and organic electroluminescent display device

An array substrate for a display device includes: a substrate; first and second gate electrodes of impurity-doped polycrystalline silicon on the substrate; a gate insulating layer on the first and second gate electrodes; first and second active layers of intrinsic polycrystalline silicon on the gate insulating layer, the first and second active layers corresponding to the first and second active layers, respectively; an interlayer insulating layer on the first and second active layers and including first to fourth active contact holes, the first and second active contact holes exposing side portions of the first active layer, the third and fourth active contact holes exposing side portions of the second active layer; first and second ohmic contact layers of impurity-doped amorphous silicon on the interlayer insulating layer, the first ohmic contact layer contacting the first active layer through the first and second active contact holes, the second ohmic contact layer contacting the second active layer through the third and fourth active contact hole; first source and drain electrodes on the first ohmic contact layer and second source and drain electrodes on the second ohmic contact layer; a data line on the interlayer insulating layer, the data line connected to the first source electrode; a first passivation layer on the first source and drain electrodes, the second source and drain electrodes and the data line; a gate line on the first passivation layer, the gate line connected to the first gate electrode and crossing the data line to define a pixel region; a second passivation layer on the gate line; and a pixel electrode on the second passivation layer, the pixel electrode connected to the second drain electrode.

Array substrate for display device and method of fabricating the same

An organic light emitting display device with improved lifespan is disclosed. The organic light emitting display device includes first and second electrodes facing each other on a substrate, at least two light emitting units formed between the first and second electrodes, an N-type charge generation layer and a P-type charge generation layer sequentially stacked between the light emitting units, and at least one auxiliary charge generation layer formed between at least any one of the P-type charge generation layer and the N-type charge generation layer and an emitting layer of the light emitting unit disposed on an upper or lower portion of the at least any one thereof and generating electrons and holes supplied to the emitting layer of the light emitting unit.

Organic light emitting display device having auxiliary charge generation layer

The organic light emitting display device includes an organic light emitting display panel and a data driver, wherein the organic light emitting display panel includes an active region which includes pixel driving TFTs for embodying an image and organic luminescent elements respectively connected with the pixel driving TFTs to emit light, a GIP region which includes a gate driver formed with a plurality of gate driving TFTs for respectively driving gate lines of the active region, a GND region formed between the GIP region and the active region to be formed with a base voltage line for supplying base voltage to the organic luminescent elements of the active region, and a sealant region formed with a sealant for attaching an upper substrate to a lower substrate, and wherein the GND region includes out-gassing blocking holes.

Organic light emitting display device and method for manufacturing the same

A method of fabricating an array substrate for an organic electroluminescent display device includes forming a semiconductor layer, a semiconductor dummy pattern, a first storage electrode and a first gate insulating layer on a substrate; forming a second gate insulating layer on the semiconductor layer and the first storage electrode; forming a gate electrode and a second storage electrode on the second gate insulating layer; forming ohmic contact layers by doping impurities into both sides of the semiconductor layer; forming an inter insulating layer on the gate electrode and the second storage electrode; forming source and drain electrodes and a third storage electrode on the inter insulating layer; forming a passivation layer on the source and drain electrodes and the third storage electrode; forming a first electrode and a fourth storage electrode on the passivation layer; and forming a spacer and a bank on the first electrode.

Array substrate for organic electroluminescent display device and method of fabricating the same

Disclosed is array substrate including a pixel region having a switching region, a driving region and a storage region. A switching TFT in the switching region includes a first gate electrode, a first gate insulating layer, a switching active layer on the first gate insulating layer, a switching source electrode on a first switching ohmic contact layer, and a switching drain electrode on a second switching ohmic contact layer; a driving TFT in the driving region is connected to the switching TFT and includes a first gate electrode, a second gate insulating layer, a driving active layer on the second gate insulating layer, a driving source electrode on a first driving ohmic contact layer, and a driving drain electrode on a second driving ohmic contact layer; wherein at least one of the switching and driving TFTs further includes a second gate electrode over the switching or driving active layers.

Array substrate for display device

An array substrate for an organic electroluminescent display device includes a substrate including a display area and a non-display area; a gate line and a data line; a thin film transistor including a semiconductor layer of polycrystalline silicon, a gate insulating layer, a gate electrode, an inter insulating layer, a source electrode, and a drain electrode; auxiliary lines formed of a same material and on a same layer as the data line; a passivation layer of organic insulating material and including a drain contact hole exposing the drain electrode, and an auxiliary line contact hole exposing one of the auxiliary lines; and a first electrode and a line connection pattern on the passivation layer, wherein the first electrode contacts the drain electrode and the line connection pattern contacts the one of the first auxiliary pattern.

Array substrate for organic electroluminescent display device

A method of fabricating an array substrate for an organic electroluminescent device includes forming a semiconductor layer of polysilicon in an element region, and a semiconductor pattern of polysilicon in a storage region on a substrate; forming a multiple-layered gate electrode corresponding to a center portion of the semiconductor layer and a first storage electrode corresponding to the semiconductor pattern; performing an impurity-doping to make a portion of the semiconductor layer not covered by the gate electrode into an ohmic contact layer and make the semiconductor pattern into a second storage electrode; forming source and drain electrodes and a third storage electrode corresponding to the first storage electrode; forming a first electrode contacting the drain electrode and a fourth storage electrode corresponding to the third storage electrode.

Array substrate for organic electroluminescent device and method of fabricating the same

An organic light emitting diode device includes a gate electrode of a first transistor on a substrate; a gate insulation film on the gate electrode of the first transistor; a source electrode of a second transistor on the gate insulation film and overlapping with the gate electrode of the first transistor; a contact hole exposing the gate electrode of the first transistor and the source electrode of the second transistor; a conductive wiring in the contact hole, for electrically connecting the gate electrode of the first transistor and the source electrode of the second transistor.

Organic light emitting diode device and method for fabricating the same

A method of manufacturing a display device includes forming a gate electrode on a substrate, a gate insulating layer on the gate electrode, and an active layer on the gate insulating layer, the gate electrode made of extrinsic polycrystalline silicon, the active layer made of intrinsic polycrystalline silicon; forming an etch stopper on the active layer; forming source and drain electrodes spaced apart from each other on the etch stopper; forming an ohmic contact layer each between a side of the active layer and the source electrode and between an opposing side of the active layer and the drain electrode; forming a gate line connected to the gate electrode; and forming a data line crossing the gate line.

Display device and method of manufacturing the same

A method of fabricating an array substrate for a display device includes: forming a buffer layer on a substrate having a pixel region; sequentially forming a gate electrode of impurity-doped polycrystalline silicon, a gate insulating layer and an active layer of intrinsic polycrystalline silicon on the buffer layer in the pixel region; forming an interlayer insulating layer of an inorganic insulating material on the active layer; sequentially forming a source barrier pattern, a source ohmic contact layer and a source electrode on the interlayer insulating layer, sequentially forming a drain barrier pattern, a drain ohmic contact layer and a drain electrode on the interlayer insulating layer, and sequentially forming a first dummy pattern, a second dummy pattern and a data line on the interlayer insulating layer; forming a first passivation layer on a surface of the interlayer insulating layer including the source electrode, the drain electrode and the data line formed thereon; forming a gate line on the first passivation layer; forming a second passivation layer on a surface of the first passivation layer including the gate line formed thereon; and forming a pixel electrode on the second passivation layer.

Array substrate for dislay device and method of fabricating the same

An array substrate for an organic electroluminescent device includes a substrate; first and second gate electrodes; first and second gate insulating layers; first and second active layers; an interlayer insulating layer; first to fourth ohmic contact layers; first and second source electrodes; first and second drain electrodes; a data line connected to the first source electrode; a first power line connected to the second source electrode; a first passivation layer on the first and second source electrodes; a gate line contacting the first gate electrode; a second passivation layer on the gate line; a pixel electrode on the second passivation layer and contacting the second drain electrode; an organic luminescent layer on the pixel electrode; and a reference electrode on the organic luminescent layer, wherein portions of the pixel electrodes respectively contacting the organic luminescent layers in one pixel region and in another one pixel region have different heights from the substrate.

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Seosan-si, South Korea

Hee-Dong Choi