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:
Aug. 19, 2014
Filed:
Sep. 05, 2006
Masachika Watanabe, Tokyo, JP;
Masanori Umeya, Tokyo, JP;
Koji Eto, Tokyo, JP;
Tsuyoshi Yamauchi, Tokyo, JP;
Masachika Watanabe, Tokyo, JP;
Masanori Umeya, Tokyo, JP;
Koji Eto, Tokyo, JP;
Tsuyoshi Yamauchi, Tokyo, JP;
Dai Nippon Printing Co., Ltd., Tokyo, JP;
Abstract
A volume hologram layer () is formed on a substrate (), and a cholesteric liquid crystal layer () is then formed on the hologram layer (). After the substrate () is peeled off the volume hologram layer (), an adhesive layer () is formed on the surface of the volume hologram layer () with the substrate () peeled off, and another substrate () is then formed on the adhesive layer (). Finally, a label form of cholesteric liquid crystal medium having a volume hologram is shaped out of the resulting multilayer structure; it is thus possible to fabricate cholesteric liquid crystal media having a volume hologram with efficiency yet without recourse to any complicated steps such as an alignment step.