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. 07, 2005
Filed:
Oct. 04, 2002
Akira Nakanishi, Osaka, JP;
Nobuhiro Yamaue, Osaka, JP;
Shigeyuki Fujii, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A touch panel has a first transparent substrate with a first transparent conductive layer, and a second transparent substrate with a second transparent conductive layer. Color of the touch panel has a b* value of 2.0 or smaller with respect to the L*a*b* color specification in accordance with JIS Z 8729. At least one of the first and second transparent substrates is provided with a color adjustment layer providing optical interference. The touch panel may further have a third transparent substrate provided with a color adjustment layer, or a third transparent substrate containing a colorant having color complementary to a color of the transparent conductive layer. The touch panel has a less yellowish appearance, and shows minimal color change of a color display device. When attached on a liquid crystal display device in an electronic apparatus, the electronic apparatus exhibits a high grade color display without a sense of incompatibility.