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Kazumasa Ohsumi Patents
Inventor:
Ohsumi; Kazumasa
Address:
Saitama, JP
No. of patents:
7
Patents:




Patent Number Title Of Patent Date Issued
7133091 Liquid crystal display panel, liquid crystal display device and composite optical element November 7, 2006
LCD panel 12 is mounted on surface light source device 11 outputting an oblique preferential emission under emission promotion by scattering pattern formed on emission face 13C. Back face 13B provides a light control face correcting directivity toward a frontal direction in a plane p
6930735 Surface light source device of side light type and liquid crystal display August 16, 2005
A LCD comprises a surface light source device of side light type for auxiliary lighting. A fluorescent lamp is turned on to supply primary light to be introduced into a guide plate. A back face (upper face) of the guide plate provides a light control face including an emission promoting
6816214 Guide plate, surface light source device of side light type and liquid crystal display November 9, 2004
A liquid crystal display includes a surface light source device of a side light type for lighting. On lighting a fluorescent lamp, primary light is introduced into a guide plate and propagates within the guide plate. Much of the illumination light enters into any one of a number of ridge
6791635 Surface light source device of side light type and liquid crystal display September 14, 2004
A LCD comprises a surface light source device of side light type for auxiliary lighting. A fluorescent lamp is turned on to supply primary light to be introduce into a guide plate. A back face (upper face) of the guide plate provides a light control face including an emission promoting
6663254 Light guide plate, surface light source device and display December 16, 2003
A liquid crystal display panel of a display is illuminated by a surface light source device. The surface light source device comprises a primary light source consisting of, for example, a point-like light source and a light guide plate which is supplied with light to be introduced throug
6612710 Surface light source device, display and light guide plate September 2, 2003
A light guide plate has a back face provided with a first light diffusion pattern which tends to get denser according to an increasing distance from a primary light source. The light guide plate has an emission face provided with a second light diffusion pattern covering rate of is the
6104854 Light regulator and surface light source device August 15, 2000
A light regulator and a surface light source device employing the light regulator. For liquid-crystal display applications, the surface light source device can effectively prevent degradation in the quality of the emitted light and can reliably provide the required directivity correc


 
 
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