Kabushiki Kaisha Toshiba

Alpad Corporation

Samsung Electronics Co., Ltd.

Miyoko Shimada

Hideto Furuyama

Akihiro Kojima

Yosuke Akimoto

Yoshiaki Sugizaki

Hideyuki Tomizawa

Hideshi Miyajima

Rempei Nakata

Tetsuro Komatsu

Hideko Mukaida

Gen Watari

Masanobu Ando

Naoya Ushiyama

Miyuki Shimojuku

Katsuya Okumura

Ichiro Mizushima

Nobuo Hayasaka

Kazuhito Higuchi

Susumu Obata

Masahiko Hasunuma

Kei Watanabe

Kazuo Shimokawa

Yasushi Nakasaki

Shinji Nunotani

Shinichi Nakao

Mitsuyoshi Endo

Nobuhide Yamada

Akiya Kimura

Hideto Matsuyama

Toshiya Nakayama

Hisashi Ito

Keiji Fujita

Hideaki Masuda

Kazuo Fujimura

Takashi Furuhashi

Shinya Ito

Akhiro Kojima

According to one embodiment, the p-side electrode is provided on the second semiconductor layer. The insulating film is provided on the p-side electrode. The n-side electrode includes a first portion, a second portion, and a third portion. The first portion is provided on a side face of the first semiconductor layer. The second portion is provided in the first n-side region. The third portion overlaps the p-side electrode via the insulating film and connects the first portion and the second portion to each other.

Semiconductor light-emitting device

The semiconductor layer has a first surface, a second surface provided on opposite side from the first surface, and a third surface provided on the opposite side from the first surface with a step difference with respect to the second surface. The semiconductor layer includes a light emitting layer between the first surface and the third surface. The first electrode is in contact with the second surface. The second electrode is provided in a plane of the third surface. The second electrode includes a contact part in contact with the third surface and an end part not in contact with the third surface. The second electrode contains silver. The insulating film is provided between the end part of the second electrode and the third surface. A semiconductor light emitting device having a high light extraction efficiency is provided.

Semiconductor light emitting device

According to one embodiment, a semiconductor light emitting device includes a semiconductor layer, a sealing member configured to cover a lower surface of the semiconductor layer and a side surface of the semiconductor layer to protrude to be higher than an upper surface of the semiconductor layer at a side of the semiconductor layer, a fluorescer layer provided above the semiconductor layer and the sealing member, and an insulating film provided between the sealing member and the semiconductor layer and between the sealing member and the fluorescer layer. A corner of a protruding portion of the sealing member is rounded.

Semiconductor light emitting device and method for manufacturing same

According to one embodiment, a semiconductor light-emitting device includes a semiconductor layer including a light emitting layer; and a phosphor layer provided on the semiconductor layer. The phosphor layer includes a plurality of phosphors, &#x2212;0.05&#x3c;A&#xd7;(AR)+B&#xd7;(Np)+C&#x3c;0.05 being satisfied for &#x2212;0.149055&#x2212;(3&#xd7;0.011797)&#x2266;constant A&#x2266;&#x2212;0.149055+(3&#xd7;0.011797), &#x2212;0.000192&#x2212;(3&#xd7;0.00002461)&#x2266;constant B&#x2266;&#x2212;0.000192+(3&#xd7;0.00002461), and 0.0818492&#x2212;(3&#xd7;0.005708)&#x2266;constant C&#x2266;0.0818492+(3&#xd7;0.005708). AR is a ratio of a thickness of the phosphor layer to a width of the phosphor layer, and Np is a number of the plurality of phosphors.

According to one embodiment, the n-side electrode has a corner and a plurality of straight portions. The plurality of straight portions extends in different directions. The corner connects the plurality of straight portions. A first insulating film is provided between the semiconductor layer and the corner of the n-side electrode. The corner is not in contact with the semiconductor layer. The straight portions of the n-side electrode are in contact with the semiconductor layer.

According to one embodiment, a semiconductor light-emitting device includes a semiconductor layer including a first semiconductor layer, a second semiconductor layer, a light emitting layer, a first surface, and a second surface; an n-side electrode including a first n-side electrode and a second n-side electrode; a first contact unit; a second contact unit; an n-side interconnect unit; a p-side electrode; and an insulating film. The insulating film includes a first insulating portion, a second insulating portion, a third insulating portion, and a fourth insulating portion.

A semiconductor light emitting device includes a semiconductor layer, a first electrode, a second electrode, a first interconnection section, a second interconnection section, and a varistor film. The semiconductor layer includes a light emitting layer. The first electrode is provided in a emitting region on the second surface. The second electrode is provided in a non-emitting region on the second surface. The first interconnection section is provided on the first electrode and electrically connected to the first electrode. The second interconnection section is provided on the second electrode and on the first electrode and electrically connected to the second electrode. The varistor film is provided in contact with the first electrode and the second interconnection section between the first electrode and the second interconnection section.

According to one embodiment, a semiconductor light emitting device includes a semiconductor layer, a p-side electrode, an n-side electrode, an insulating film, a p-side interconnection section, an n-side interconnection section, a phosphor layer, and a metal film. The semiconductor layer is formed on a substrate which is then removed. The p-side interconnection section is provided on the insulating film and electrically connected to the p-side electrode. The n-side interconnection section is provided on the insulating film and electrically connected to the n-side electrode. The phosphor layer is provided on the first surface and includes a step portion continued to the side surface of the semiconductor layer. The metal film is provided on the side surface of the semiconductor layer and a side surface of the step portion of the phosphor layer.

Semiconductor light emitting device and method for manufacturing the same

According to one embodiment, a light emitting device includes a first base section, a light emitting section, and a first wiring section. The light emitting section is embedded on a first surface side of the first base section. The light emitting section includes a light emitting element. The first wiring section is provided on the first surface of the first base section. The first wiring section is connected to the light emitting element.

Light emitting device and method for manufacturing the same

According to one embodiment, a semiconductor light emitting device includes not less than three chips. Each of the chips includes a semiconductor layer having a first face, a second face formed on a side opposite to the first face, and a light emitting layer, a p-side electrode, and an n-side electrode. The chips include a central chip centrally positioned in a plan view, and at least two peripheral chips arranged symmetrically to each other sandwiching the central chip in the plan view. A thickness of the fluorescent body layer on the first face is same among the peripheral chips, and the fluorescent body layer on the first face of the central chip and the fluorescent body layers on the first faces of the peripheral chips have thicknesses different from each other.

According to one embodiment, a semiconductor light emitting device includes a light emitting element, a phosphor layer, and a fluorescent reflection film. The phosphor layer has a transparent medium, a phosphor dispersed in the transparent medium, and a particle dispersed in the transparent medium. The phosphor is excited by the excitation light so as to emit a fluorescence. The particle is a magnitude of not more than 1/10 a wavelength of the excitation light. The particle has a different refractive index from a refractive index of the transparent medium. The fluorescent reflection film is provided between the light emitting element and the phosphor layer. The fluorescent reflection film has a higher reflectance with respect to a fluorescent wavelength of the phosphor, than a reflectance with respect to the wavelength of the excitation lights.

A semiconductor light emitting device includes a light emitting unit, a first and second electrode, a first and second metal pillar, a sealing unit, a rectifying element, and a first and second interconnection. The light emitting unit includes a first and second semiconductor layer, and a light-emitting layer. The light-emitting layer is provided on the first semiconductor layer. The second semiconductor layer is provided on the light-emitting layer. The first electrode is provided on the first semiconductor layer. The second electrode is provided on the second semiconductor layer. The first metal pillar is electrically connected to the first electrode. The second metal pillar is electrically connected to the second electrode. The sealing unit seals the first metal pillar and the second metal pillar. The rectifying element is provided below the first semiconductor layer, including a rectifying unit.

A semiconductor light emitting device includes a semiconductor layer, a p-side and an n-side interconnect portions, a fluorescent substance layer and a transparent layer. The semiconductor layer has a first major surface, a second major surface, and a first side surface, the semiconductor layer including a light emitting layer. The p-side and n-side interconnect portions are electrically connected to the semiconductor layer. The fluorescent substance layer is provided on the first major surface side. The transparent layer is provided between the semiconductor layer and the fluorescent substance layer, and has a second side surface. The device further includes an insulating film covering the first side surface and the second side surface, and a reflecting member covering the first side surface and the second side surface via the insulating film.

Semiconductor light emitting device having a fluorescent substance layer

According to one embodiment, a semiconductor light emitting device includes a semiconductor layer, a p-side electrode, an n-side electrode, a fluorescent material layer and a scattering layer. The semiconductor layer has a first surface and a second surface on an opposite side to the first surface and includes a light emitting layer. The p-side electrode and the n-side electrode are provided on the semiconductor layer on a side of the second surface. The fluorescent material layer is provided on a side of the first surface and includes a plurality of fluorescent materials and a first bonding material. The first bonding material integrates the fluorescent materials. The scattering layer is provided on the fluorescent material layer and includes scattering materials and a second bonding material. The scattering materials are configured to scatter radiated light of the light emitting layer. The second bonding material integrates the scattering materials.

Growing community of inventors

Kanagawa-ken, Japan

Miyoko Shimada