Korea Institute of Machinery & Materials

Samsung Electronics Co., Ltd.

Jong-Youp Shim

Jun-ho Jeong

Eung-Sug Lee

Jang-Joo Kim

Dae-Geun Choi

Ki-Don Kim

Jun-Hyuk Choi

So-Hee Jeon

Jae-R Youn

Yong-kyu Byun

Sang-eun Baek

Dong-ho Oh

An organic light emitting device having a photonic crystal structure and a manufacturing method thereof are provided. The organic light emitting device comprises: a substrate through which light passes; a photonic crystal layer formed on the substrate and having a photonic crystal structure; an intermediate layer formed on the photonic crystal layer and having a large refractive index compared with the photonic crystal layer; a first electrode layer formed on the intermediate layer; a light emitting layer formed on the first electrode layer and emitting light according to current flow; and a second electrode layer formed on the light emitting layer.

Organic light emitting device and manufacturing method thereof

Provided are a method of calculating repeatable runout (RRO) of a hard disk drive (HDD) in a frequency domain, a method of calculating a compensation value using the RRO calculating method, and recording media used therefore. The method of calculating RRO in a disk with a plurality of tracks includes: calculating first set of frequency coefficients for representing the RRO by analyzing a position error signal (PES), which is sampled in a target track, in a frequency domain while a head follows the target track; and calculating the RRO using the first set of frequency coefficients.

Methods calculating RRO and RRO compensation value in HDD

Growing community of inventors

Anyang-si, South Korea

Jong-Youp Shim