Nichia Corporation

Yasunori Shinomiya

Takuya Nakabayashi

Toru Hashimoto

Satoshi Yoshinaga

Masato Okuda

Daisuke Iwakura

Seitaro Akagawa

Yoichi Bando

Atsushi Kanda

A planar light source includes a support member; a light guide member including a first surface located proximate to an upper surface of the support member, a second surface opposite to the first surface, and a through hole extending from the first surface to the second surface; a light source unit including a light-emitting element and a wavelength conversion member that covers an upper surface and a lateral surface of the light-emitting element and disposed on the support member at a position of the through hole; a light-transmissive member disposed between the light source unit and the light guide member in the through hole; and a light adjustment member disposed on the light source unit and the light-transmissive member. An upper surface of the wavelength conversion member of the light source unit is located higher than the second surface of the light guide member.

Planar light source

A method of manufacturing a planar light source includes: providing a wiring substrate including: an insulating layer defining a first through-hole and a second through-hole that are separated from each other, and a first wiring layer and a second wiring layer that are disposed below the insulating layer, wherein the first wiring layer is separated from the first through-hole and the second wiring layer is separated from the second through-hole, and wherein, in a top plan view, the first wiring layer and the second wiring layer are arranged at two opposite sides with respect to the first through-hole and the second through-hole; disposing a light guide member and a light source above the wiring substrate; and forming (i) a first wiring member that fills the first through-hole, and (ii) a second wiring member that is separated from the first wiring member and fills the second through-hole.

Planar light source and method of manufacturing the same

A light emitting module includes a light source, a light guide member, and first and second light reflective members. The light guide member is configured to transmit light from the light source. The light guide member having an upper surface and a lower surface opposite to the upper surface. The first light reflective member is arranged on a lower surface side of the light guide member. The first light reflective member has a lower surface. The first light reflective member includes a first resin, and a first reflective body having a refractive index higher than a refractive index of the first resin. The second light reflective member is arranged on a lower surface side of the first light reflective member. The second light reflective member includes a second resin, and a second reflective body having a refractive index lower than a refractive index of the second resin.

Light emitting module and planar light source

A light-emitting module includes a light guide member including a first surface, a second surface on an opposite side of the first surface, and a first through hole penetrating from the first surface to the second surface, a light source unit disposed in the first through hole, a first light-transmissive member disposed in the first through hole of the light guide member and covering the light source unit, and a reflective member disposed above the light source unit and disposed above the first light-transmissive member. In a plan view, an outer edge of the reflective member is located outside an outer edge of the light source unit, and the reflective member includes a resin member and a reflector having a refractive index lower than a refractive index of the resin member.

Light-emitting module and planar light source

A planar light source includes a wiring substrate including an insulating layer comprising a first through-hole, a second through-hole, a first wiring layer, and a second wiring layer; a light source including a first electrode and a second electrode, a light guide member; a first wiring member including a first portion filling the first through-hole and electrically connected to the first electrode and a second portion disposed below the insulating layer, continuous with the first portion, and in contact with the first wiring layer; and a second wiring member including a third portion filling the second through-hole and electrically connected to the second electrode and a fourth portion disposed below the insulating layer, continuous with the third portion, and in contact with the second wiring layer. The first and second wiring layers are arranged at opposite sides of the first and second through-holes in a top plan view.

A light-emitting module according to an embodiment includes a plurality of light-emitting elements, light-guiding plates each having a light-exiting surface, and a wiring layer connected to electrodes of the plurality of light-emitting elements on a surface opposite to the light-exiting surface. The wiring layer includes a first terminal, a second terminal, a first wiring pattern connecting the first terminal and the second terminal, a second wiring pattern connecting the first terminal and the second terminal, a third wiring pattern disposed between the first wiring pattern and the second wiring pattern to connect the first terminal and the second terminal, a fourth wiring pattern connecting the first to third wiring patterns in parallel, the fourth wiring pattern being connected to the first terminal, and a fifth wiring pattern connecting the first to third wiring patterns in parallel, the fifth wiring pattern being connected to the second terminal.

Growing community of inventors

Tokushima, Japan

Yasunori Shinomiya