Samsung Electronics Co., Ltd.

Do-Young Rhee

Suk-ho Yoon

Kee-Won Lee

Keon-Hun Lee

Young-Min Lee

In Soo Kim

Seung-Won Lee

Dong-Hoon Jang

In-kuk Yun

Jeong-wook Lee

Chul-min Kim

Hwa-Young Kang

Jeong-Seok Lee

Shi-Yun Cho

June-Hyeon Ahn

Sang-don Lee

Seung-Kee Yang

Tae-Il Kim

Jong-uk Seo

Seong-Min Seo

Jong-Ryeol Kim

Byoung-kyun Kim

Byung-Ok Jeon

Tae-Bang Nam

Byung-Kwon Kang

Duk-Ho Jeon

Eun-Deok Sim

Disclosed herein are a material layer stack, a light emitting element, a light emitting package, and a method of fabricating a light emitting element. The material layer stack includes: a substrate having a first lattice constant; and a semiconductor layer grown on the substrate, the semiconductor layer having a second lattice constant that is different from the first lattice constant. Using the material layer stack, a light emitting element having a low leakage current, a low operation voltage, and an excellent luminous efficiency can be obtained.

Material layer stack, light emitting element, light emitting package, and method of fabricating light emitting element

A pen-type input device and method for sending positional input to a host device, in which a first switch, located on the pen's tip is provided to input character strokes in a character input mode and move a mouse cursor in a mouse mode, a second switch is provided to perform a mouse left-click operation in the mouse mode, and a third switch is provided to switch an input mode of the pen-type input device.

Pen type input device and method for character input and mouse functions

An apparatus for evaluating the quality of a crystal includes an optical device that measures a surface reflectance of a wafer in which a V-pit is formed; and a data processing unit that calculates a threading dislocation density by calculating a difference in surface reflectance of the wafer that is measured by the optical device.

Apparatus for evaluating quality of crystal, and method and apparatus for manufacturing semiconductor light-emitting device including the apparatus

In a folder type or a swing type terminal including a pair of housings or triple housings for attaining composite opening/closing operation, information transmission with a higher speed and larger capacity is available using optical devices for establishing communication lines between circuit devices in the housings. Also, a stable maintenance of the communication lines is possible between the circuit devices of the housings in spite of repeated opening/closing operation of the housings.

Portable terminal having optical transmitter/receiver

A semiconductor monolithic integrated optical transmitter including a plurality of active layers formed on a semiconductor substrate is disclosed, which comprises: a distributed feedback laser diode including a grating for reflecting light with a predetermined wavelength and a first active layer for oscillating received light from the grating; an electro-absorption modulator including a second active layer for receiving light from the first active layer, wherein the received light intensity is modulated through a change of absorbency in accordance with an applied voltage; an optical amplifier including a third active layer for amplifying received light from the second active layer; a first optical attenuator between the first active layer and the second active layer; and a second optical attenuator between the second active layer and the third active layer.

Semiconductor monolithic integrated optical transmitter

An optical apparatus having a vertical light receiving element is disclosed. The optical apparatus is configured to couple light generated from a light source using the vertical light receiving element, then transforms the received light signals into an electric signal. The optical apparatus includes: a vertical photo detector having a photo-absorption layer; and an optical bench on which the photo detector is disposed. The optical bench having a first groove and a second groove formed adjacent to each other, the first groove having a predetermined inclination and being formed at an edge of a first surface of the optical bench, and the first surface being opposite to a second surface of the optical bench, on which the photo detector is disposed, such that a light signal incident to the first groove is refracted at a predetermined angle by the first groove; and the light signal, which has been refracted by the first groove, is totally reflected by the second groove. As a result, that the light signal is substantially and vertically incident into the photo-absorption layer.

Optical apparatus using vertical light receiving element

Growing community of inventors

Seoul, South Korea

Do-Young Rhee