Samsung Led Co., Ltd.

Samsung Electro-mechanics Co., Ltd.

Doo Go Baik

Seok Beom Choi

Su Yeol Lee

Jong Gun Woo

Bang Won Oh

Tae Sung Jang

Sang Ho Yoon

Dong Woo Kim

Tae Jun Kim

In Tae Yeo

Nam Seung Kim

Hak Kyu Kim

A vertical nitride-based semiconductor LED comprises a structure support layer; a p-electrode formed on the structure support layer; a p-type nitride semiconductor layer formed on the p-electrode; an active layer formed on the p-type nitride semiconductor layer; an n-type nitride semiconductor layer formed on the active layer; an n-electrode formed on a portion of the n-type nitride semiconductor layer; and a buffer layer formed on a region of the n-type nitride semiconductor layer on which the n-electrode is not formed, the buffer layer having irregularities formed thereon. The surface of the n-type nitride semiconductor layer coming in contact with the n-electrode is flat.

Vertical nitride semiconductor light emitting diode and method of manufacturing the same

Method of manufacturing vertical nitride semiconductor light emitting diode

Provided is a vertical LED including an n-electrode; an n-type GaN layer formed under the n-electrode, the n-type GaN layer having a surface coming in contact with the n-electrode, the surface having a GaN layer containing a larger amount of Ga than that of N; an active layer formed under the n-type GaN layer; a p-type GaN layer formed under the active layer; a p-electrode formed under the p-type GaN layer; and a structure support layer formed under the p-electrode.

Vertical light emitting diode and method of manufacturing the same

A vertical GaN-based LED comprises an n-electrode; an n-type GaN layer formed under the n-electrode, the n-type GaN layer having an irregular-surface structure which includes a first irregular-surface structure having irregularities formed at even intervals and a second irregular-surface structure having irregularities formed at uneven intervals, the second irregular-surface structure being formed on the first irregular-surface structure; an active layer formed under the n-type GaN layer; a p-type GaN layer formed under the active layer; a p-electrode formed under the p-type GaN layer; and a structure support layer formed under the p-electrode.

Gallium nitride-based light emitting diode and method of manufacturing the same

A vertical nitride semiconductor light emitting device and a manufacturing method thereof are provided. In the device, an ohmic contact layer, a p-type nitride semiconductor layer, an active layer, an n-type nitride semiconductor layer and an n-electrode are sequentially formed on a conductive substrate. At least one of a surface of the p-type nitride semiconductor layer contacting the ohmic contact layer and a surface of the n-type nitride layer contacting the n-electrode has a high resistance area of damaged nitride single crystal in a substantially central portion thereof. The high resistance area has a Schottky junction with at least one of the ohmic contact layer and the n-electrode.

Vertical type nitride semiconductor light emitting device and method of manufacturing the same

A method of manufacturing a vertical GaN-based LED comprises forming a light emission structure in which an n-type GaN-based semiconductor layer, an active layer, and a p-type GaN-based semiconductor layer are sequentially laminated on a substrate; etching the light emission structure such that the light emission structure is divided into units of LED; forming a p-electrode on each of the divided light emission structures; filling a non-conductive material between the divided light emission structures; forming a metal seed layer on the resulting structure; forming a first plated layer on the metal seed layer excluding a region between the light emission structures; forming a second plated layer on the metal seed layer between the first plated layers; separating the substrate from the light emission structures; removing the non-conductive material between the light emission structures exposed by separating the substrate; forming an n-electrode on the n-type GaN-based semiconductor layer; and removing portions of the metal seed layer and the second plated layer between the light emission structures.

Vertical gallium nitride-based light emitting diode and method of manufacturing the same

A vertical GaN-based LED and a method of manufacturing the same are provided. The vertical GaN-based LED can prevent the damage of an n-type GaN layer contacting an n-type electrode, thereby stably securing the contact resistance of the n-electrode. The vertical GaN-based LED includes: a support layer; a p-electrode formed on the support layer; a p-type GaN layer formed on the p-electrode; an active layer formed on the p-type GaN layer; an n-type GaN layer for an n-type electrode contact, formed on the active layer; an etch stop layer formed on the n-type GaN layer to expose a portion of the n-type GaN layer; and an n-electrode formed on the n-type GaN layer exposed by the etch stop layer.

Method of manufacturing vertical gallium-nitride based light emitting diode

There is provided a semiconductor light emitting device having excellent light extraction efficiency to efficiently reflect light moving into the device by increasing the total reflectivity of a reflective layer. A semiconductor light emitting device according to an aspect of the invention includes: a substrate, a reflective electrode, a first conductivity semiconductor layer, an active layer, and a second conductivity type semiconductor layer that are sequentially stacked. Here, the reflective electrode includes; a first reflective layer provided on the substrate and including a conductive reflective material reflecting light generated from the active layer; and a second reflective layer provided on the first reflective layer, including one or more dielectric portions reflecting light generated from the active layer, and one or more contact holes filled with a conductive filler to electrically connect the first conductivity type semiconductor layer and the first reflective layer, and having a greater thickness than a wavelength of the generated light.

Semiconductor light emitting device

Vertical gallium-nitride based light emitting diode

According to a method of manufacturing a vertical nitride light emitting device, a first conductivity type nitride layer, an active layer and a second conductivity type nitride layer are sequentially grown on a preliminary growth substrate to form a light emission structure. The light emission structure is cut according to a final size of light emitting devices, leaving a predetermined thickness of the first conductivity type nitride layer intact. A permanent conductive substrate is provided on the light emission structure and the preliminary substrate is diced into a plurality of units. Laser beam is irradiated to detach the preliminary substrate, thereby separating the light emission structure according to the size of the light emitting devices. First and second contacts are formed on the first conductivity type nitride layer and the permanent conductive substrate, respectively. The permanent conductive substrate is diced to complete individual light emitting devices.

Method of manufacturing vertical nitride light emitting device

A light emitting diode (LED) includes a substrate, a first conductive clad layer formed on the substrate, an active layer formed on the first conductive clad layer, a second conductive clad layer formed on the active layer, an alumina (AlO) layer formed on the lower surface of the substrate, and an aluminum layer formed on the lower surface of the alumina (AlO) layer. The substrate may be removed, and the aluminum layer and the alumina layer are formed directly on the lower surface of the first conductive clad layer.

Growing community of inventors

Suwon-si, South Korea

Doo Go Baik