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:
Aug. 18, 2015
Filed:
Aug. 10, 2011
Yosuke Maeda, Tokyo, JP;
Koichi Shigeno, Tokyo, JP;
Tomoyuki Ariyoshi, Tokyo, JP;
Mitsuhiro Okada, Tokyo, JP;
Yukiko Kanehara, Tokyo, JP;
Yosuke Maeda, Tokyo, JP;
Koichi Shigeno, Tokyo, JP;
Tomoyuki Ariyoshi, Tokyo, JP;
Mitsuhiro Okada, Tokyo, JP;
Yukiko Kanehara, Tokyo, JP;
ADEKA CORPORATION, Tokyo, JP;
Abstract
A color conversion filter contains at least one kind of squarylium dye that radiates fluorescence light, has a wavelength conversion capability, absorbs light in an unneeded wavelength region, radiates fluorescence light in a preferable wavelength region, and does not allow decrease in brightness, and thus is preferable for color conversion light-emitting devices, photoelectric conversion devices and the like. Specifically, the color conversion filter has an absorption having a high intensity in the range of 570 to 600 nm, and thus is preferable for use in a color conversion filter that radiates fluorescence light having a high intensity in the range of 600 to 780 nm.