Omron Corporation

Yukihiro Takahashi

Masayuki Shinohara

Kazuhide Hirota

Koichi Takemura

Norikazu Kitamura

Yasuhiro Tanoue

Gouo Kurata

Yoshihiro Ueno

Jun Kishimoto

Hiroyuki Miyamoto

Takako Ishikawa

Tomofusa Shibata

Yoshihisa Yamanaka

Masayuki Kojima

Isao Makuta

Morihisa Ota

Takuma Iwase

Yoshikaga Taguchi

Toshikaga Taguchi

A die structure has a first die, a second die that comes in contact with and separate from the first die, a heating unit provided in at least one of the first and second dies, and a transfer member provided in at least one of the first and second dies that brings a resin sheet supplied between the first and second dies into contact with a transfer surface and carrying out transfer molding, and a recess site formed on the transfer member near the transfer surface.

Transfer molding method, die structure, transfer molding device, and optical member

A method for producing a light guide plate includes forming a light introduction part that introduces light incident through an end face, and forming a light guide plate body that has a thickness less than a maximum thickness of the light introduction part, forming the light guide plate body to be continuously joined to the light introduction part, and forming the light guide plate body so as to cause a light controller to output the incident light to an outside. The light guide plate producing method further includes a conveying step of conveying a resin sheet between a first die and a second die, which are disposed while facing each other, wherein a transfer surface is provided in at least one of surfaces facing each other in the first and second dies.

Light guide plate producing method, die structure, transfer molding apparatus, light guide plate, area light source device, liquid crystal display device, and mobile device

A light guide plate has a light incident surface configured to be arranged facing a point light source for introducing light from the point light source, a light outputting surface that outputs the light to an outside of the light guide plate, a light introducing section for confining the light from the point light source entered from the light incident surface, and a light guide plate main body having a thickness smaller than a maximum thickness of the light introducing section and being arranged to be continuous with the light introducing section, for outputting the confined light to the outside of the light guide plate from the light outputting surface by a light outputting element.

Surface light source apparatus

A light guide plate () includes a light introducing section (), which is at a position facing a point light source (), for confining light from the point light source, and a light guide plate main body (), which has a thickness smaller than a thickness at an end of the light introducing section on the point light source side, for outputting the confined light to an outside from a light outputting surface by light outputting means (). The light introducing section () has an inclined surface (), which is inclined from a surface of the light introducing section towards a surface of the light guide plate main body (). The inclined surface () has a directivity converting pattern () for converting a directivity expansion in a thickness direction of the light guide plate of the light entered to the light introducing section () to directivity characteristics tilted towards a direction parallel to a surface direction of the light guide plate. The directivity converting pattern () has a structure in which a plurality of V-shaped groove structures () are lined.

Growing community of inventors

Kyoto, Japan

Yukihiro Takahashi