Samsung Led Co., Ltd.

Samsung Electronics Co., Ltd.

Samsung Electro-mechanics Co., Ltd.

Grigory Onushkin

Young Jin Lee

Gil Han Park

Pun Jae Choi

Jung Ja Yang

Myong Soo Cho

Jin Hyun Lee

Joong Kon Son

Byoung Own Min

Jong Hoon Lim

Hyung Kun Kim

Sang Su Hong

Oleg Ledyaev

Provided are a light emitting device and a method of manufacturing the same. The light emitting device includes each of first and second semiconductor stacked structures including first and second conductive type semiconductor layers and an active layer, first and second contacts on tops and bottoms of the first and second semiconductor stacked structures to be connected to the first and second conductive type semiconductor layers, a substrate structure including first and second sides, a first insulation layer on an area where no second contact is formed among a surface of the first and second semiconductor stacked layers, first and second conductive layers connected to the second contacts of the first and second semiconductor stacked structures, first and second wiring layers on the first side of the substrate structure, and first and second external connection terminals connected to the first and second contacts of the first semiconductor stacked structure.

Light emitting device and method of manufacturing the same

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 semiconductor light emitting device has a semiconductor laminate including first and second conductivity type semiconductor layers respectively providing first and second main surfaces and an active layer. The semiconductor laminate is divided into first and second regions. At least one contact hole is formed to pass through the active layer from the second main surface of the first region. A first electrode is formed on the second main surface to be connected to the first conductivity type semiconductor layer of the first region and the second conductivity type semiconductor layer of the second region. A second electrode is formed on the second main surface of the first region to be connected to the second conductivity type semiconductor layer of the first region and the first conductivity type semiconductor layer of the second region.

Semiconductor light emitting device with contact hole passing through active layer

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

There is provided an LED driving circuit. The LED driving circuit according to an aspect of the invention may include: at least one ladder circuit including: (n&#x2212;1) number (here, n is a positive integer satisfying n&#x2267;2) of first branches provided between first and second junction points, and connected in-line with each other by n number of first middle junction points, (n&#x2212;1) number of second branches arranged in parallel with the first branches, and connected in-line with each other by n number of second middle junction points between the first and second junction points, and n number of middle branches connecting m-th first and second middle junction points to each other, wherein at least one LED device is disposed on each of the first, second, and middle branches. Here, the number of LED devices included in each of the first and second branches is greater than the number of LED devices included in each of the middle branches.

LED driving circuit and light emitting diode array device

AC driven light emitting device

Disclosed are a light emitting diode (LED) inspection apparatus, which can determine whether an LED has a defect such as leakage current, without making physical contact with the LED being inspected, and an LED inspection method thereof. The LED inspection apparatus includes an ultraviolet emission unit emitting UV light to an LED, an image generation unit generating an image of the LED to which the UV light is emitted, and a control unit obtaining color or intensity information of the LED from the image of the LED and determining, based on the color information, whether the LED is defective.

LED inspection apparatus and LED inspection method using the same

A light emitting device including: at least one light emitting stack including first and second conductivity type semiconductor layers and an active layer disposed there between, the light emitting stack having first and second surfaces and side surfaces interposed between the first and second surfaces; first and second contacts formed on the first and second surface of the light emitting stack, respectively; a first insulating layer formed on the second surface and the side surfaces of the light emitting stack; a conductive layer connected to the second contact and extended along one of the side surfaces of the light emitting stack to have an extension portion adjacent to the first surface; and a substrate structure formed to surround the side surfaces and the second surface of the light emitting stack.

Growing community of inventors

Gyunggi-do, South Korea

Grigory Onushkin