Samsung Display Co., Ltd.

Samsung Mobile Display Co., Ltd.

Byung-Hoon Chun

Ja-Hyun Im

Kwan-Hee Lee

Ji-Hwan Yoon

Sung-Jun Bae

Seong-Jong Kang

Jung-Min Moon

Tae-Kwang Sung

Ji-Hoon Seo

Eun-Jung Lee

Tae-Shick Kim

Dong-Heon Kim

Joong-Won Sim

Bum-Suk Kim

Provided is an organic light emitting diode that is highly efficient and has a long lifespan. The organic light emitting diode includes a carbazole-based compound for improving light emission efficiency. In certain embodiments an electron transport layer can include an anthraces-based compound. The organic light emitting diode may be included in a flat display diode including a thin film transistor (TFT).

Organic light emitting diode

An organic light-emitting device and a method of manufacturing the same. The organic light-emitting device includes a substrate, a first electrode formed on the substrate, a second electrode, an emission layer between the first electrode and the second electrode, a hole transport layer between the first electrode and the emission layer, and an electron transport layer between the second electrode and the emission layer. The hole transport layer includes a first hole transport unit comprising: a first hole transport layer comprising a hole transporting material, a third hole transport layer formed on the first hole transport layer and comprising a charge generating material; and a fifth hole transport layer formed on the third hole transport layer and comprising the hole transporting material.

Organic light-emitting device and method of manufacturing the same

An organic light emitting diode display includes a p-doped layer that can obtain high efficiency at low-voltage driving and low current and prevent leakage current by differentially forming the p-doped layer for each pixel.

Organic light emitting diode display and method for manufacturing the same

An organic light-emitting device and a flat panel device, the organic light-emitting device including a first electrode; a second electrode; and an organic layer between the first electrode and the second electrode, wherein the organic layer includes an emission layer, the emission layer including at least one N-doping layer.

Organic light-emitting device

An organic light-emitting device with an electron transport layer disposed between the organic emission layer and the second electrode and comprising an anthracene-based compound and a carbazole-based compound represented by Formula 1 below: with improved efficiency and lifetime and a method for preparing the same are provided.

An organic light emitting display includes a substrate; a first pixel electrode disposed on the substrate; a second pixel electrode disposed on the substrate; a hole auxiliary layer disposed on the first pixel electrode and the second pixel electrode; a first organic emission layer disposed on the hole auxiliary layer in correspondence with the first pixel electrode and the second pixel electrode; a blue organic emission layer disposed on the hole auxiliary layer in correspondence with the first pixel electrode and the second pixel electrode, the blue organic emission layer being further disposed on the first organic emission layer; a non-doping blue organic emission layer disposed on the blue organic emission layer; an electron auxiliary layer disposed on the non-doping blue organic emission layer; and a common electrode disposed on the electron auxiliary layer.

Organic light emitting display and method of manufacturing the same

An organic light-emitting diode includes: a substrate; a first electrode; a second electrode; an emission layer between the first electrode and the second electrode; and a hole blocking layer between the emission layer and the second electrode. The hole blocking layer includes a first layer including a first material and a second material, and a second layer formed on the first layer and including the first material. The first material includes a hole blocking material having a highest occupied molecular orbital (HOMO) energy level in the range of about 5.5 to about 6.9 eV, and the second material includes a green or red phosphorescent host material.

Organic light-emitting diode and flat display device including the same

A deposition apparatus includes a deposition source emitting a deposition material and an angle control member disposed on both sides of the deposition source and controlling an emission direction angle of the deposition material. The angle control member includes a housing having an internal space opened in an emission direction of the deposition material and a sliding member having a first end which is inserted into the internal space and a second end disposed on an emission path of the deposition material. The sliding member is movable forward and backward in the emission direction of the deposition material along the internal space. A method of manufacturing an organic light emitting diode (OLED) display which uses the deposition apparatus is also disclosed.

Depositing apparatus and method for manufacturing organic light emitting diode display using the same

An organic light-emitting device including a substrate; a first electrode on the substrate; a second electrode; an organic layer between the first electrode and the second electrode; and a carbonaceous material-containing layer between the first electrode and the organic layer, wherein the first electrode includes an aluminum (Al)-based reflective layer and a transparent conductive layer sequentially stacked in this order on the substrate, the Al-based reflective layer including a first element and nickel (Ni) and the first element includes at least one of lanthanum (La), cerium (Ce), praseodymium (Pr), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), and lutetium (Lu).

Organic light-emitting device including an aluminum-based reflective layer

An OLED display device includes a substrate, a TFT on the substrate, the TFT including a semiconductor layer, a gate electrode, and source and drain electrodes, a first electrode electrically connected to one of the source and drain electrodes, a pixel defining layer on the substrate, the pixel defining layer exposing the first electrode and having a reversed trapezoidal shape, an emitting layer on the exposed first electrode, and a second electrode on the emitting layer.

Organic light emitting diode display device having a pixel defining layer and method of fabricating the same

An organic light emitting diode (OLED) and a method of fabricating the same are provided. In the OLED, a second electron transport layer having an absolute value of a lowest unoccupied molecular orbital (LUMO) energy level smaller than that of a first electron transport layer is formed between a second electrode and the first electron transport layer, so that the second electron transport layer can suppress injection and transport of electrons under a low voltage condition to maintain a low current density. Accordingly, it is possible to prevent (or block) an element from emitting light when representing the color black. The OLED includes an emission layer on the first electrode, the first electron transport layer on the emission layer, the second electron transport layer on the first electron transport layer, and the second electrode on the second electron transport layer.

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Yongin, South Korea

Byung-Hoon Chun