The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 2015
Filed:
Oct. 12, 2011
Shogo Shinkai, Miyagi, JP;
Kentaro Okuyama, Miyagi, JP;
Tomoaki Suzuki, Miyagi, JP;
Akira Ebisui, Miyagi, JP;
Yuji Takahashi, Miyagi, JP;
Taizo Nishimura, Miyagi, JP;
Shinpei Nagatani, Kanagawa, JP;
Shogo Shinkai, Miyagi, JP;
Kentaro Okuyama, Miyagi, JP;
Tomoaki Suzuki, Miyagi, JP;
Akira Ebisui, Miyagi, JP;
Yuji Takahashi, Miyagi, JP;
Taizo Nishimura, Miyagi, JP;
Shinpei Nagatani, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
An illumination device includes a light guide plate, a light source, and a light modulation element. The light guide plate has convex portions extending in a direction parallel to a normal to a face opposed to the light source among side faces of the light guide plate, and the light source is configured of light source blocks. The light modulation element includes a pair of transparent substrates disposed separately and oppositely to each other, a plurality of first electrodes provided on a surface of one of the transparent substrates, and extending in a direction crossing an extending direction of the convex portions, a second electrode provided on a surface of the other transparent substrate, and a light modulation layer provided in a gap between the transparent substrates, and exhibiting a scattering property or a transparent property to light from the light source depending on magnitude of an electric field.