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:
Apr. 27, 1999
Filed:
Jun. 06, 1997
Applicant:
Inventors:
Kesanao Kobayashi, Haibara-gun, JP;
Takashi Fujita, Yamato, JP;
Naoyuki Tsujimura, Kawasaki, JP;
Naohisa Tohjoh, Yokohama, JP;
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F / ; G03F / ;
U.S. Cl.
CPC ...
430-7 ; 4302881 ;
Abstract
A color filter for liquid crystal displays, has a red colored layer wherein a first red pigment where a 40%-transmittance wavelength at a short-wave end of a transmitted spectrum (short-wave 40%-transmittance wavelength) is in a range of 550 to 600 NM and a second red pigment where the short-wave 40%-transmittance wavelength is within 40 NM from the range of the first red pigment are mixed so that transmittance in a wavelength region of 450 to 500 NM is substantially 0%.