Nichia Corporation

Masaki Hayashi

Tomohide Miki

Shimpei Sasaoka

Hirofumi Ichikawa

Tomohisa Kishimoto

Yuki Shiota

Masafumi Kuramoto

Junya Narita

Koji Abe

Takanori Akaishi

Keisuke Kurashita

Hiroto Tamaki

Tadaaki Ikeda

Daisuke Iwakura

Kimihiro Miyamoto

Takayuki Sano

Takuya Nakabayashi

Shoji Hosokawa

Kenji Ozeki

Kazutoshi Tomiyoshi

Yusaku Achi

Yusuke Taguchi

Daisuke Kishikawa

Satoshi Okada

Taiki Yuasa

Tomoaki Tsuruha

Yuji Okada

Motohisa Kitani

Tomoyoshi Tada

Koji Kuroda

A light emitting device includes: a resin package including: a resin part, and a plurality of leads including a first lead and a second lead, wherein the resin package has a concave portion having a bottom face at which a part of an upper surface of the first lead and a part of an upper surface of the second lead are exposed from the resin part; a light emitting element mounted on the bottom face of the concave portion; and a sealing member covering the light emitting element in the concave portion. The plurality of leads comprise a plurality of notch parts including a first notch part on a first side corresponding to a first outer side surface of the resin package and a second notch part on a second side corresponding to a second outer side surface of the resin package.

Light emitting device, resin package, resin-molded body, and methods for manufacturing light emitting device, resin package and resin-molded body

Each of a plurality of light emitting elements has a hexagonal shape with a center. An interior angle at each of corners is less than 180&#xb0;. The plurality of light emitting elements include a first light emitting element having a first lateral side surface and a second light emitting element having a second lateral side surface. An orientation of the hexagonal shape of the second light emitting element is rotated by 30 degrees plus 30&#xb0;+60&#xb0;&#xd7;N (N is an integer) with respect to the center of the second light emitting element relative to an orientation of the hexagonal shape of the first light emitting element such that the second lateral side surface is not parallel to the first lateral side surface.

Light emitting device

A method of manufacturing a light emitting device having a resin package which provides an optical reflectivity equal to or more than 70% at a wavelength between 350 nm and 800 nm after thermal curing, and in which a resin part and a lead are formed in a substantially same plane in an outer side surface, includes a step of sandwiching a lead frame provided with a notch part, by means or an upper mold and a lower mold, a step of transfer-molding a thermosetting resin containing a light reflecting material in a mold sandwiched by the upper mold and the lower mold to form a resin-molded body in the lead frame and a step of cutting the resin-molded body and the lead frame along the notch part.

Each of a plurality of light emitting elements has a polygonal shape with five or more corners. An interior angle at each of the corners is less than 180&#xb0;. The plurality of light emitting elements include a first light emitting element having a first bottom surface, a first top surface opposite to the first bottom surface, and a first lateral side surface between the first bottom surface and the first top surface. The second light emitting element has a second bottom surface, a second top surface opposite to the second bottom surface, and a second lateral side surface between the second bottom surface and the second top surface. The second lateral side surface is provided not to oppose to the first lateral side surface in substantially parallel.

A light emitting device includes: a package forming a recess, having a first lead and a second lead arranged on a bottom surface of the recess and a resin section on a lateralwall of the recess to fix the leads, and being in a substantially rectangular shape surrounded by upper sides of the lateralwalls of the recess; a light emitting element arranged on the first lead and being in a parallelogram shape; a second wire electrically connecting the light emitting element to the second lead; and reflective members covering inner surfaces of the lateralwalls on a diagonal line at corners in the recess, wherein one side of the light emitting element adjacent to the second lead is substantially in parallel to one side of the first lead or the second lead.

Light emitting device including different shapes of light emitting element having higher light extraction efficiency

A method of manufacturing a package, the method comprising the steps of: preparing a resin compact having a recess, and including a pair of leads arranged at a bottom surface of the recess, a first resin body forming a lateral wall of the recess, and a second resin body arranged between the pair of leads; forming a reflective film entirely on at least the bottom surface of the recess and an inner surface of the lateral wall of the recess; and removing the reflective film formed on the pair of leads in the recess in the resin compact on which the reflective film has been formed.

Package and light-emitting device

A light emitting device includes: a package forming a recess, having a first lead and a second lead arranged on a bottom surface of the recess and a resin section on a lateral wall of the recess to fix the leads, and being in a substantially rectangular shape surrounded by upper sides of the lateral walls of the recess; a light emitting element arranged on the first lead and being in a parallelogram shape; a second wire electrically connecting the light emitting element to the second lead; and reflective members covering inner surfaces of the lateral walls on a diagonal line at corners in the recess, wherein one side of the light emitting element adjacent to the second lead is substantially in parallel to one side of the first lead or the second lead.

A light source device having: a blue light emitting element that emits blue light having an emission peak in a wavelength region of 440 nm to 460 nm; a green phosphor that absorbs part of the blue light emitted by the blue light emitting element and thereby emits green light having an emission peak in a wavelength region of 500 nm to 575 nm; a red phosphor that absorbs at least one of part of the blue light emitted by the blue light emitting element and part of the green light emitted by the green phosphor, and thereby emits red light having an emission peak in a wavelength region of 600 nm to 690 nm; and an absorbent containing neodymium fluoride that absorbs part of the green light and part of the red light.

Light source device

A light emitting device includes a first light emitting element, a second light emitting element, a third light emitting element, a fluorescent material, a film, a first lens, a second lens, and a third lens. The first light emitting element is to emit a first light having a peak wavelength in a range from 440 nm to 485 nm. The second light emitting element is to emit a second light having a peak wavelength in a range from 495 nm to 573 nm. The third light emitting element is configured to emit from a third front surface a third light having a peak wavelength in a range from 440 nm to 485 nm. The fluorescent material is provided on the third front surface and has a fluorescent side surface extending along a front-rear direction. The film is provided to surround the side surface and the fluorescent side surface.

Light emitting device and display device

To provide a light emitting device having high light extraction efficiency, and a method for manufacturing the light emitting device. A method for manufacturing a light emitting device () according to the present invention, includes: forming a sealing member () for sealing a light emitting element () on a base body () by dropping, the base body () including a conductive member () for connecting to the light emitting element (), and a molding () integrally molded with the conductive member (); the sealing member () being formed such that at least a part of a periphery of the sealing member () is located on an outward surface () of the conductive member () or the molding (), the outward surface facing outward in a top view.

Light emitting device and method for manufacturing the same

A light emitting device includes at least one light emitting element to emit a first light having a first peak emission wavelength in a range of 420 nm to 480 nm and at least one fluorescent material to convert the first light to a second light having a second fluorescent peak wavelength in a range of 610 nm to 750 nm. The second light has chromaticity existing in an enclosed area in a CIE 1931 chromaticity diagram in which chromaticity is defined by x and y coordinates. The enclosed area is enclosed with a first straight line, a second straight line, a third straight line, and a curved line.

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Anan, Japan

Masaki Hayashi