Omron Corporation

Kazunori Harada

Kazuhide Hirota

Koichi Takemura

Shinji Miyazaki

Masakazu Komano

Takashi Onishi

Tetsuo Hayashi

Junichiro Tsuji

Daido Uchida

Kazuyuki Otake

Kota Yonezawa

A surface light source device includes a light source; a light guide plate that has a light entrance surface through which light enters, and that emits the light entering through the light entrance surface from a light exit surface; a wiring board; and a metal frame. The metal frame includes a bottom portion having a bottom surface that faces a surface on an opposite side to the light exit surface, a side wall erected on an outer periphery of the bottom surface, and a projecting portion provided on the side wall so as to project toward the bottom surface side. The metal frame houses the light source, the light guide plate, and the wiring board. At least a part of the light source is disposed between the bottom portion and the projecting portion, and the wiring board is disposed between the light source and the bottom portion.

Surface light source device, display device, and electronic device

A frame includes a resin frame which surrounds at least a part of the side faces of a light guide plate; a reflection diffusion material which is added in the resin frame and reflects and diffuses light; and an absorption material which is added in the resin frame and absorbs light. The reflectance of the resin frame is equal to or greater than 30% and equal to or smaller than 80%.

Frame, surface light source device, display device and electronic device

Growing community of inventors

Saitama, Japan

Kazunori Harada