Samsung Display Co., Ltd.

Beom-Joon Kim

Chang-Ho Lee

Hee-Joo Ko

Se-Jin Cho

Jin-Young Yun

Dae-Yup Shin

Il-Soo Oh

Young-Mok Son

Bo-Ra Lee

Tae-Min Kang

Chang-Min Lee

Yeon-woo Lee

Hyun-Ju Choi

Pyung-Eun Jeon

Jin-Woo Park

Young-Woo Song

Do-Young Kim

Sang-Woo Pyo

Hyo-Yeon Kim

Seung-Mook Lee

Myung-Jong Jung

Jung-Geun Lee

Provided is an organic light-emitting device including a first electrode, a second electrode disposed opposite to the first electrode, an emission layer disposed between the first electrode and the second electrode, and an electron-transporting layer disposed between the emission layer and the second electrode. The electron-transporting layer includes a first electron-transporting material and a second electron-transporting material. The lowest unoccupied molecular orbital (LUMO) energy level of the first electron-transporting material (EL) and the lowest unoccupied molecular orbital (LUMO) energy level of the second electron-transporting material (EL) satisfy the equation 0.1 eV&#x2266;|EL&#x2212;EL|&#x2266;0.3 eV.

Organic light-emitting device

An organic light emitting device, and a manufacturing method of the same, in which in a light emitting layer, an electron trap material is introduced so as to improve a light emitting property and an operating characteristic and to prolong a life span.

Organic light emitting device with enhanced lifespan

Organic light-emitting device using a mixture of electron transporting compounds

A laser irradiation device and a method of manufacturing an organic light emitting diode display device using the same. The laser radiation device prevents the scattering of the laser light into portions of the donor substrate that correspond to non-transmissive regions of a mask pattern. To reduce the scattering, the mask pattern is designed so that 1) non-transmissive regions of a surface of the mask pattern that faces the laser source have a reflective layer, 2) the surface of the mask pattern that faces the laser source is oriented to have a certain angle with respect to the laser beam axis, and 3) a surface of the mask pattern that faces the donor substrate has an anti-reflective layer. Each of these design aspects of the mask pattern prevents laser light from being scattered and prevents irradiating portions of the donor substrate that corresponds to a non-transmissive region of the mask pattern.

Laser irradiation device and method of manufacturing organic light emitting diode display device using the same

An organic light-emitting display apparatus is disclosed. The organic light-emitting display apparatus includes a first sub-pixel, a second sub-pixel, and a third sub-pixel, where each of said first, second and third sub-pixels displays a different color, a substrate, a first electrode disposed on the substrate, a second electrode disposed on the first electrode, facing the first electrode, an organic emission layer disposed between the first electrode and the second electrode, including a first organic emission layer, a second organic emission layer, and a third organic emission layer, and an electron acceptor layer disposed between the first electrode and the second electrode configured to contact the organic emission layer, where the first organic emission layer is disposed in the first sub-pixel, the second organic emission layer is disposed in the second sub-pixel, and the third organic emission layer is commonly disposed over the first sub-pixel, the second sub-pixel, and the third sub-pixel, and where the electron acceptor layer is disposed between the first organic emission layer and the third organic emission layer in the first sub-pixel and between the second organic emission layer and the third organic emission layer in the second sub-pixel.

Organic light-emitting display apparatus

Growing community of inventors

Yongin, South Korea

Beom-Joon Kim