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:
Oct. 26, 2004
Filed:
Jun. 29, 2001
Jun Yamada, Takatsuki, JP;
Masakazu Okada, Kyoto, JP;
Kiyofumi Hashimoto, Suita, JP;
Mitsuyoshi Miyai, Sakai, JP;
Minolta Co., Ltd., Osaka, JP;
Abstract
A liquid crystal light modulation element includes a liquid crystal layer between first and second substrates. The liquid crystal layer includes a liquid crystal material exhibiting a cholesteric phase having a peak selective reflection wavelength in a visible wavelength range. When the liquid crystal layer is in the selective reflection state, it has pixel regions near the first and second substrates. The liquid crystal domains in the pixel regions near the first substrate are in a mixed state of polydomain and monodomain states. The liquid crystal domains in the pixel regions near the first substrate have a first ratio between the liquid crystal domains taking the polydomain and monodomain states. The liquid crystal domains in the pixel regions near the second substrate have a second ratio between the liquid crystal domains taking the polydomain and monodomain states. The first ratio is different from the second ratio.