Samsung Display Co., Ltd.

Samsung Mobile Display Co., Ltd.

Jae-Hyun Kwak

Kwan-Hee Lee

Min-Seung Chun

Jung-Ha Son

Mi-Kyung Kim

Young-Ho Park

Dong-Heon Kim

Tae-Shick Kim

Dong-Hun Kim

Kyung-Hoon Choi

Hwan-Hee Cho

Chang-Woong Chu

Ji-Hwan Yoon

Moon-Jae Lee

Ji-Hyun Seo

Choon-Woo Lim

Young-Suck Choi

Choon-Woo Im

Mie-Hwa Park

Mie-Hwan Park

An organic light-emitting device includes a first electrode, a second electrode facing the first electrode, a phosphorescent emission layer between the first electrode and the second electrode, and an electron transport layer between the phosphorescent emission layer and the second electrode. The phosphorescent emission layer includes a compound represented by one of Formulae 1a to 1c, and the electron transport layer includes a metal-containing compound and a compound represented by Formula 2. 

Organic light-emitting device and organic light-emitting display apparatus including the same

Provided are an organic light emitting diode and a method of manufacturing the same. The organic light emitting diode adjusts an optical resonance thickness and prevents spectrum distortions without use of an auxiliary layer. The organic light emitting diode includes a first electrode that is optically reflective; a second electrode that is optically transmissible and faces the first electrode; an organic emission layer interposed between the first electrode and the second electrode, the organic emission layer including: a first emission layer including a mixed layer that contains a host material and a dopant material, and a second emission layer comprising only the host material; and a carrier injection transport layer interposed between the organic emission layer and the first electrode or between the organic emission layer and the second electrode.

Organic light emitting diode and method of manufacturing the same

An organic light emitting device is described. The organic light emitting device includes: a substrate; a first electrode on the substrate; an emission layer on the first electrode; a second electrode on the emission layer; and an exciton blocking layer between the first electrode and the emission layer, in which a LUMO energy level of the exciton blocking layer is higher than a LUMO energy level of the emission layer.

Organic light emitting device

An organic light-emitting device includes a first electrode, a mixed organic layer, an emission layer, an electron transport layer, and a second electrode. The mixed organic layer contains a fluorene derivative and a pyrazine derivative, and the electron transport layer contains a lithium quinolate and a pyridine derivative.

Organic light-emitting device

A method of forming a film on a substrate includes depositing first and second evaporating source materials respective from first and second evaporating sources onto the substrate while moving the evaporating sources together with respect to the substrate, the first and second evaporating source materials being different from each other and positioned to provide a non-overlapping deposition region of the first evaporating source material, an overlapping deposition region of the first and second evaporating source materials and a non-overlapping deposition region of the second source material such that when the evaporating sources are moved, a film is formed to include a first layer that is a deposition of only the first evaporating source material, a second layer that is a deposition of a mixture of the first evaporating source material and the second evaporating source material and a third layer that is a deposition of only the second source material.

Evaporating method for forming thin film

An organic light-emitting device including a mixed organic layer that includes a triphenyl amine derivative and a pyrazine derivative and an emission layer that includes an anthracene derivative, an amine-containing styryl derivative, or any mixture thereof.

A method of forming a plurality of multi-layer organic films in a single process includes preparing a first evaporating source that evaporates a first evaporating source material onto a first deposition region and a second evaporating source that evaporates a second evaporating source material onto a second deposition region, wherein the first evaporating source material and the second evaporating source material are different from each other, adjusting the first evaporating source and the second evaporating source in order to obtain a first overlapping region in which the first deposition region and the second deposition region overlap each other, driving the first evaporating source and the second evaporating source to deposit the first evaporating source material and the second evaporating source material onto a portion of an object to be processed, and moving the first evaporating source and the second evaporating source from a first end of the object to a second end of the object to form a multilayer film comprising a first layer that is a deposition of only the first evaporating source material, a second layer that is a deposition of a mixture of the first evaporating source material and the second evaporating source material and a third layer that is a deposition of only the second source material.

Organic light emitting devices (OLEDs) are provided. An exemplary OLED includes a substrate, a first electrode, a second electrode, and an organic layer between the first and second electrodes having a hole injection layer and an emissive layer. The emissive layer includes red, green and blue emissive layers. The organic layer further includes an auxiliary layer selected from a first auxiliary layer between the hole injection layer and the red emissive layer for adjusting the resonance cycle of red light, a second auxiliary layer between the hole injection layer and the green emissive layer for adjusting the resonance cycle of green light, and combinations thereof. The material of the auxiliary layer is different from the material of the hole injection layer. The organic light emitting device has low turn-on voltage, high current density, high luminance, high current efficiency, high power, long life-time, and excellent color purity.

The invention is directed to organic light emitting diodes (OLEDs) and methods of manufacturing the same. According to embodiments of the invention, an improved electron transport layer (ETL) reduces the driving voltage and current consumption of the OLED, and increase luminous efficiency and lifespan. The OLED includes a first electrode, an organic layer on the first electrode and including an emission layer (EML) and an ETL, and a second electrode on the organic layer.

An organic light-emitting device includes a substrate; a first electrode; a second electrode facing the first electrode; an organic layer disposed on the first electrode; and an emitting layer interposed between the organic layer and the second electrode. The concentration of inorganic impurities within the organic layer is 1000 ppb or less. The organic light-emitting device has high light-emitting efficiency, low driving voltage, high brightness, and long life span.

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Yongin, South Korea

Jae-Hyun Kwak