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:
Jan. 28, 2003
Filed:
Nov. 17, 2000
Atsushi Wada, Himeji, JP;
Yoshinori Kawasaki, Himeji, JP;
Sanyo Color Works, Ltd., Hyogo, JP;
Abstract
A photoselective absorbing filter that avoids a decrease in luminance of picture elements and is capable of absorbing reflected light with high efficiency, and a color display device equipped with the photoselective absorbing filter, are disclosed. In a filter of the present invention, the transmittance of light at a wavelength ranging from 470 to 510 nm and at a wavelength ranging from 550 to 600 nm is a value smaller than a transmittance of light at a visible range other than said two wavelength ranges. The photoselective absorbing filter of the present invention contains a coloring material containing (a) a pyridinophthalocyanine selected from the group consisting of metal-tetra-2,3-pyridinoporphyrazine, metal-tetra-3,4-pyridinoporphyrazine, tetra-2,3-pyridinoporphyrazine and tetra-3,4-pyridinoporphyrazine, and (b) an anthraquinone dye. The anthraquinone dye is selected from Solvent Orange (35, 64, 65, 66, 68, 69, 71, 77, 86, and 87) and Solvent Red (52, 152, 155, 156, 168, 169, 170, 171, 172, 175, 177, 181, 190, and 191).