Omron Corporation

Tetsuo Hayashi

Kazuhide Hirota

Koichi Takemura

Takashi Sato

Gouo Kurata

Takashi Onishi

Masanori Mori

Daido Uchida

Shinji Miyazaki

Kazunori Harada

Kazuyuki Otake

Masakazu Komano

Junichiro Tsuji

Akira Nagao

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

An area light source device has a light guide plate having an end face and a light exit surface, a light source that is disposed in a position facing the end face of the light guide plate, a plurality of optical sheets that are disposed on the light guide plate, a light shielding plate that is disposed so as to cover an upper portion of the light source, and a light blocking member that is provided between the end face of the light guide plate and the light exit surface. The end face of the light guide plate is configured to have light introduced therethrough. The light exit surface of the light guide plate is configured to output the light from the light guide plate. The light blocking member is different from the light shielding plate.

Surface light source device, liquid crystal display device, and mobile device

Growing community of inventors

Saitama, Japan

Tetsuo Hayashi