Omron Corporation

Junichiro Tsuji

Masayuki Shinohara

Yasuhiro Tanoue

Kazuhide Hirota

Koichi Takemura

Takashi Onishi

Junichi Takagi

Kazunori Harada

Kazuyuki Otake

Masakazu Komano

Tetsuo Hayashi

Shinji Miyazaki

Daido Uchida

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

To make an efficiency of utilizing light with high efficiency in a plane light source apparatus used along with a liquid crystal display panel of a reflection type as a backlight, light fleaked from a rear face of a light guide platein a skewed direction, is incident on inside of a prism sheetand reflected by a reflecting faceLight freflected by the reflecting faceis reflected in a direction orthogonal to the prism sheetpasses the light guide plateand is emitted from a light emitting faceof the light guide platein a direction orthogonally thereto.

Plane light source apparatus

Growing community of inventors

Saitama, Japan

Junichiro Tsuji