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:
Mar. 23, 2010
Filed:
Oct. 02, 2008
Yuka Utsumi, Hitachi, JP;
Katsumi Kondo, Hitachinaka, JP;
Ikuo Hiyama, Hitachi, JP;
Osamu Itoh, Hitachi, JP;
Masahito Ohe, Mobara, JP;
Kazuhiko Yanagawa, Mobara, JP;
Keiichiro Ashizawa, Mobara, JP;
Yuka Utsumi, Hitachi, JP;
Katsumi Kondo, Hitachinaka, JP;
Ikuo Hiyama, Hitachi, JP;
Osamu Itoh, Hitachi, JP;
Masahito Ohe, Mobara, JP;
Kazuhiko Yanagawa, Mobara, JP;
Keiichiro Ashizawa, Mobara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A liquid crystal display apparatus includes a liquid crystal panel having polarizers, and a back light having a light source for illumination of the liquid crystal panel which has a characteristic of spectral transmittance required to satisfy the following equation, x>y>z, when a medium tone display voltage varies in a range between a minimum and maximum voltage for a Blue pixel, where 'x' is a value of the transmittance in the panel at a wavelength corresponding to a longest wavelength in a range of wavelengths designated for blue light, 'y' is a value of the transmittance in the panel at a wavelength corresponding to a maximum value of the intensity in a range of wavelengths designated for green light, and “z” is a value of the transmittance in the panel at a wavelength corresponding to a maximum value of the intensity in a range of wavelengths designated for red light.