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:
Sep. 18, 2001
Filed:
Oct. 23, 1998
Hiroshi Shingu, Minamiazumi-gun, JP;
Takashi Miyazaki, Matsumoto, JP;
Kiminori Kanamori, Hataka-machi, JP;
Kenichi Okuhara, Kiso-mura, JP;
Hidenori Makiba, Matsumoto, JP;
Seiko Epson Corporation, , JP;
Abstract
This invention relates to a two-layer display type of electronic equipment having a liquid crystal panel (,) and a background display portion (,) on a rear surface side thereof. The liquid crystal panel (,) has a main liquid crystal panel unit (,) formed by inserting a liquid crystal layer (,) between a first substrate (,) and a second substrate (,). The liquid crystal layer (,) is set to either a light-transmitting state or a light-scattering state by an electrical field that is applied to the liquid crystal. This liquid crystal panel (,) has a transparent layer (,) on the rear surface of the second substrate (,). If the refractive index of this transparent layer (,) is n,, the refractive index of the second substrate (,) in contact with the front side of this transparent layer is n,, and the refractive index of the air layer in contact with the rear side of the transparent layer (,) is n,, the following relationship is established: n,<n,<n,.