Stanley Electric Co., Ltd

Kazuyuki Yoshimizu

Seiichiro Kobayashi

Junichi Sonoda

Toshihiro Seko

Masayuki Hasegawa

A surface mount light-emitting device of side view and lead frame type can include a casing having a cavity, a first lead frame having a first mounting surface exposed from the cavity, and a second lead frame having a second mounting surface exposed from the cavity. A light-emitting chip can be mounted on one of the first and the second mounting surfaces, which extend in a substantially same level and balanced shapes with respect to each other to be used as external electrodes. An encapsulating resin including at least one phosphor can also encapsulate the light-emitting chip in the cavity. Thus, the disclosed subject matter can provide reliable surface mount light-emitting devices that can be easily mounted on a mounting board with high positional accuracy and can emit various color lights having a high light-emitting intensity using a high brightness chip in a substantially parallel direction to the mounting board.

Surface mount light-emitting device

A method includes forming a light-emission operating layer on a growth substrate; forming a reflection insulating layer on the light-emission operating layer; forming opening portions in the insulating layer; forming a contact portion which has a thickness adapted to flatten the opening portions and has been embedded into the opening portions; forming an electrode layer on the insulating layer and the contact portions; forming a first bonding metal layer on the electrode layer; preparing a supporting substrate in which a second bonding metal layer has been formed; and making the first and second bonding metal layers molten and joined.

Manufacturing method of semiconductor light-emitting apparatus and semiconductor light-emitting apparatus

A LED chip having first and second electrodes on opposite principal surfaces, is bonded to a substrate through a composite bonding layer. The composite bonding layer is formed when a support substrate including the substrate and a first bonding layer is bonded to a lamination structure including the LED, the first electrode and a second bonding layer. The first or second bonding layer contains at least part of eutectic composition. At least one of the support substrate and the lamination structure includes a diffusion material layer. The composite bonding layer is formed in such a manner that eutectic material contents are mixed with the other to form a first mixture, and that the first mixture is mixed with diffusion material to form a second mixture having a melting point higher than a melting point of the first mixture.

Semiconductor device, its manufacture method and electronic component unit

A semiconductor light emitting device including: a support substrate; a composite connection layer formed above the support substrate, the composite connection layer including a first connection layer and a second connection layer; a diffusion barrier layer formed above the composite connection layer; a semiconductor lamination structure formed above the diffusion barrier layer; and a reflective electrode layer formed between the diffusion barrier layer and the semiconductor lamination structure, wherein: at least one of the first and second connection layers is made of eutectic material; and the diffusion barrier layer has a lamination structure having TaN layers sandwiching at least one refractory metal layer made of one or more refractory metal materials of Ta, Ti, Mo, W and TiW or alloy thereof. It is possible to prevent defects such as stripping and cracks at bonding planes and improve reliability of a final semiconductor light emitting device.

Growing community of inventors

Tokyo, Japan

Kazuyuki Yoshimizu