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:
Dec. 31, 2013
Filed:
Dec. 11, 2008
Masatoshi Yamaguchi, Ibaraki, JP;
Tomoaki Shibata, Ibaraki, JP;
Takeshi Oohashi, Ibaraki, JP;
Atsushi Takahashi, Ibaraki, JP;
Masatoshi Yamaguchi, Ibaraki, JP;
Tomoaki Shibata, Ibaraki, JP;
Takeshi Oohashi, Ibaraki, JP;
Atsushi Takahashi, Ibaraki, JP;
Hitachi Chemical Company, Ltd., Tokyo, JP;
Abstract
The invention provides an optical waveguide including a resin substrate containing an inorganic filler, and at least a UV-absorbing layer, a lower cladding layer, a patterned core layer, and an upper cladding layer laminated above the resin substrate in this order, wherein the core layer has been patterned through light exposure and development, and the UV-absorbing layer has a thickness of 10 to 50 μm, and a method for producing an optical waveguide, including a step of forming a UV-absorbing layer on a resin substrate containing an inorganic filler; a step of forming a lower cladding layer on the UV-absorbing layer; a step of forming a core layer on the lower cladding layer; a step of subjecting the core layer to light exposure to thereby transfer a pattern having a given shape to the core layer; a step of developing the core layer to thereby form a core pattern; and a step of forming an upper cladding layer on the patterned core layer. According to the present invention, an optical waveguide having a high-resolution core pattern can be produced.