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:
Mar. 19, 2002
Filed:
Jan. 13, 1999
Seiko Epson Corporation, , JP;
Abstract
A retardation film and an upper polarized light separator are provided on the upper side of a liquid crystal cell . A diffuser , a lower polarized light separator , a color filter , a PET film and an Al deposited film are provided on the lower side of the liquid crystal cell . As the upper polarized light separator and the lower polarized light separator , a polarized light separator (reflective polarizer) is used, which reflects linearly-polarized light in one direction as linearly-polarized light in the one direction, and transmits linearly-polarized light in another direction perpendicular to the one direction as linearly-polarized light in the other direction. The light emitted from LED is introduced into a light guide plate between the upper polarized light separator and the retardation film through a light guide . Then the light is emitted from the lower side of the light guide plate to the liquid crystal cell