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. 01, 2004
Filed:
Apr. 26, 2002
Yasushi Kaneko, Sayama, JP;
Citizen Watch Co., Ltd., Tokyo, JP;
Abstract
A nematic liquid crystal ( ) with twisted alignment is held between a first substrate ( ) having a first electrode ( ) and a second substrate ( ) having a second electrode ( ) to constitute a liquid crystal cell ( ), an upper polarizer ( ) is provided outside the second substrate ( ) at a visible side thereof, a lower polarizer ( ) and a scattering layer ( ) are provided outside the fist substrate ( ) at a side opposite to the visible side of the liquid crystal cell ( ), and outside them, a light guide film ( ) of side light type and a reflector ( ) are placed in order. The light guide film ( ) is a light guide film with a light scattering property in which particles with a scattering property are mixed, and each of the scattering layer ( ) and the light guide film ( ) has a property of scattering incident light while substantially maintaining a polarizing state thereof.