Samsung Sdi Co., Inc.

Samsung Mobile Display Co., Ltd.

Ho-Kyoon Chung

Jin-Woo Park

Jang-hyuk Kwon

Min-Chul Suh

Seong-Taek Lee

Jae-Bon Koo

Mu-Hyun Kim

Byung-Hee Kim

Tae-Min Kang

Nam-Choul Yang

Hye-Dong Kim

Ul-Ho Lee

Sun-Hwa Kim

Seung-Yong Song

Yoon-Chang Kim

Young-Rag Do

Seung-yong Song

Oh-Kyong Kwon

Jae-Ho Lee

Yang-Wan Kim

Sang-Moo Choi

Myung-Won Song

Byung-Doo Chin

Choon-Yul Oh

Jun-Yeob Lee

Yong-Joong Choi

The invention is directed to an organic electroluminescent (EL) display device having an improved light extracting efficiency due to a photonic crystal layer formed proximate one side of a stack. Among other elements, the stack may include a first electrode formed on a substrate, an organic light emitting layer formed above the first electrode, and a second electrode formed above the organic light emitting layer. Additionally, the photonic crystal layer may be configured to correspond to a wavelength of colored light. An organic EL display device having an improved light extracting efficiency may be manufactured using a thermal transfer donor film to adhere the photonic crystal layer to the stack.

Electroluminescent display device provided with a photonic crystal layer incorporating voids in a vacuum state

A double-sided light emitting device including lower and upper substrates, an emission element formed between an inner surface of the upper substrate and an inner surface of the lower substrate and emitting predetermined light, an upper layer of polarizing material disposed on at least one of inner and outer surfaces of the upper substrate, and a lower layer of polarizing material disposed on at least one of inner and outer surfaces of the lower substrate.

Double-sided light emitting device

A flat panel display includes a glass substrate, an organic light-emitting part, and a sealing part. The organic light-emitting part includes one or more organic light-emitting devices (OLED) formed on a surface of the glass substrate, which has a thickness of about 0.05 mm to about 0.5 mm. The sealing part seals the organic light-emitting part and protects it from damage during the manufacturing process. A method for manufacturing the flat panel display includes preparing a glass substrate of approximately 0.7 mm thickness or greater; forming a plurality of organic light-emitting devices on a surface of the glass substrate, wherein a group of one or more of the plurality of organic light-emitting devices constitutes an organic light-emitting part; sealing each organic light-emitting part; and etching the glass substrate to a predetermined thickness.

Super-thin OLED and method for manufacturing the same

Organic electroluminescent display device having a photonic crystal layer provided over electroluminescent stack

A flexible flat panel display where nanoparticles are used for the active layer of the TFTs and the substrate is flexible and can be manufactured at room temperature, a flat panel display device having the same, a method of manufacturing a TFT, a method of manufacturing a flat panel display device, and a method of manufacturing a donor sheet. In making the TFTs in the display, a donor sheet is used to transfer the nanoparticles from the sheet to the substrate. The thin film transistor is placed on a substrate and includes a channel region which has at least one P-type or N-type nanoparticle arranged in a lengthwise direction, wherein the lengthwise direction of the P-type or N-type nanoparticles is parallel to a P-type or an N-type nanoparticle line partitioned off on the substrate.

TFT, flat panel display device having the same, method of manufacturing TFT, method of manufacturing flat panel display device, and method of manufacturing donor sheet

An organic electroluminescent display device improves driving characteristics at a high temperature and storage characteristics of the organic electroluminescent display device, and prevents pixel contraction phenomena of the device by providing an organic electroluminescent display device comprising a substrate, a first electrode and a second electrode formed on the substrate, and an organic film layer comprising at least one emitting layer between the first electrode and the second electrode. The emitting layer includes at least one phosphorescent dopant, and the dopant is represented by L3M or L2ML', wherein the M is a transition metal selected from the group consisting of Ir, Pt, Zn and Os, the L and L&#x2032; are bidendate ligands coordinated with carbon and nitrogen, and at least one of the L and L&#x2032; has 15 or more carbon atoms in the ligand.

Organic electroluminescent display device having superior characteristics at high temperature

A donor substrate for a laser induced thermal imaging method and an organic electroluminescent display device fabricated using the same are provided. The donor substrate may be constructed with base film; a light-to-heat conversion layer formed on the base film; a buffer layer formed on the entire surface of the light-to-heat conversion layer; a metal layer formed on the buffer layer; and a transfer layer formed of an organic material and formed on the metal layer, thereby enhancing the characteristics of a transfer pattern by transferring a small molecular material using the laser induced thermal imaging method.

Donor substrate for laser induced thermal imaging method and organic electroluminescent display device fabricated using the same

A pixel circuit in an organic light emitting device capable of realizing high gradation representation by self-compensating a threshold voltage, and a method for driving the same. The pixel circuit includes an electroluminescent element for emitting light in response to an applied driving current. A first transistor delivers a data signal voltage in response to a current scan line signal. A second transistor generates a driving current to drive the electroluminescent element in response to the data signal voltage. A third transistor connects the second transistor in the form of a diode in response to a current scan signal to self-compensate the threshold voltage of the second transistor. A capacitor stores the data signal voltage delivered to the second transistor. A fourth transistor delivers a power supply voltage to the second transistor in response to a current light-emitting signal. A fifth transistor provides the driving current, provided from the second transistor, for the electroluminescent element in response to the current light-emitting signal.

Organic light emitting device pixel circuit and driving method therefor

An organic light emitting device, and a method of fabricating the same, has a cathode electrode that can prevent oxygen or moisture from infiltrating. The organic light emitting device of the present invention has a lower electrode, an organic thin film layer and an upper electrode successively formed on the substrate. The upper electrode has at least two-layered thin films having different grain density and grain size. A lower film of the at least two-layered thin films of the upper electrode has a first Al thin film having a lower grain density and larger grain size than an upper of the at least two-layered thin films. The upper film has a second Al thin film having relatively higher grain density and smaller grain size than the first Al thin film.

Flat panel display device and method of fabricating the same

A flexible flat panel display where nanoparticles are used for an active layer and the substrate is a flexible plastic, a method of manufacturing the same, a method of manufacturing a thin film transistor (TFT) using the donor sheet, and a method of manufacturing a flat panel display device using the donor sheet. In making the TFTs in the display, a donor sheet is used to transfer the nanoparticles from the sheet to the substrate. The donor sheet can be manufactured at room temperature. The donor sheet has a base film, and a transfer layer being disposed at one side of the base film and transferable, wherein the transfer layer has a plurality of nanoparticles which are arranged to be approximately parallel to one another.

Donor sheet, method of manufacturing the same, method of manufacturing TFT using the donor sheet, and method of manufacturing flat panel display device using the donor sheet

An organic light-emitting device has a color modulation layer. The organic light-emitting device comprises a substrate, a first electrode positioned on the substrate and a second electrode positioned on the first electrode, wherein at least one of the first electrode and the second electrode is transparent. An organic functional layer having at least an emission layer is interposed between the first electrode and the second electrode. A color modulation layer formed by a laser-induced thermal imaging method is positioned on a surface opposite to a surface adjacent to the emission layer of the transparent electrode, wherein the color modulation layer is at least one of a color filter and a color conversion medium.

Full color organic light-emitting device having color modulation layer

A method of manufacturing an organic electroluminescent display device includes preparing an auxiliary substrate, which has a flat side; forming a first protective layer on the auxiliary substrate; forming an organic electroluminescent unit on the first protective layer; bonding a flexible main substrate onto the organic electroluminescent unit; and etching the auxiliary substrate to remove the same.

Method of manufacturing substrate, method of manufacturing organic electroluminescent display device using the method, and organic electroluminescent display device

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Yongin-si, South Korea

Ho-Kyoon Chung