Samsung Electronics Co., Ltd.

Samsung Led Co., Ltd.

Samsung Electro-mechanics Co., Ltd.

Gil Han Park

Young Jin Lee

Grigory Onushkin

Jung Ja Yang

Byoung Own Min

Hong Ki Kim

Back Kue Lee

Young Min Park

Ki Tae Park

Hak Hwan Kim

Hee Seok Park

Kyeong Ik Min

Sang Bum Lee

Seon Young Myoung

Kwang Youel Raa

Sang Duk Yoo

Myoung Sik Jung

An alternating current (AC) driven light emitting device includes a substrate, K number of first light emitting diode (LED) cells arranged in a row on a top surface of the substrate, where K is an integer satisfying K&#x2267;3, K number of second LED cells arranged in a row parallel to the row of the first LED cells on the top surface of the substrate, and (K&#x2212;1) number of third LED cells arranged in a row between the respective rows of the first and second LED cells on the top surface of the substrate. The AC driven light emitting device has a connection structure between LED cells to be operable at an AC.

AC driven light emitting device connection structure

A method for selectively growing a nitride semiconductor, in which a mask is formed, with an opening formed therein, on a nitride semiconductor layer. A nitride semiconductor crystal is selectively grown on a portion of the nitride semiconductor layer exposed through the opening in the mask, the nitride semiconductor crystal shaped as a hexagonal pyramid and having crystal planes inclined with respect to a top surface of the nitride semiconductor. Here, the nitride semiconductor crystal has at least one intermediate stress-relieving area having crystal planes inclined at a greater angle than those of upper and lower areas of the nitride semiconductor crystal, the intermediate stress-relieving area relieving stress which occurs from continuity in the inclined crystal planes.

Selective growth method, nitride semiconductor light emitting device and manufacturing method of the same

There is provided an LED driving circuit including: at least one ladder network circuit including: (n+1) number of first branches connected in parallel with one another by n number of first middle junction points between a first junction point and a second junction point, where n denotes an integer satisfying n&#x2267;2, (n+1) number of second branches connected in parallel with one another by n number of second middle junction points between the first junction point and the second junction point, the (n+1) number of second branches connected in parallel with the first branches; and n number of middle branches connecting the first and second middle junction points of an identical m sequence to each other, respectively, wherein each of the first and second, and middle branches comprises at least one LED device.

Light emitting diode driving circuit and light emitting diode array device

AC driven light emitting device

Provided is a space scanner for a self-control moving object. The space scanner has a structure in which a reflective mirror is rotated and tilted. Thus, the space scanner can scan a moving object in horizontal and vertical directions to secure spatial-data, thereby performing a self-control movement.

Space scanner for self-control moving object

A three-dimensional space scanner is configured so that a reflecting mirror is rotated and tilted so as to scan a mobile object in a horizontal as well as vertical direction, thereby obtaining spatial data.

Three-dimensional space scanner

Growing community of inventors

Gyunggi-do, South Korea

Gil Han Park