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:
Jul. 18, 2006
Filed:
Feb. 24, 2004
Yoshiharu Ooi, Koriyama, JP;
Masao Ozeki, Yokohama, JP;
Yoshiharu Ooi, Koriyama, JP;
Masao Ozeki, Yokohama, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
A liquid crystal element including a liquid crystal cell that has transparent substrates having electrodes and a liquid crystal layer sandwiched between the substrates, the liquid crystal cell having a retardation value for a linearly polarized light having a wavelength of λ incident and transmitting through the liquid crystal cell, the retardation value changing from Rto R(R>R>0) when a first voltage Vapplied between the electrodes is changed to a second voltage V(V≠V). The liquid crystal element also includes a phase plate having a retardation value R for a linearly polarized light having the wavelength of λ, the retardation value R satisfying a relation R+R=m×λ (m: integer) with a retardation value Rgenerated by a third voltage satisfying R≧R≧R.