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. 05, 2007
Filed:
Oct. 31, 2003
Toshimitsu Watanabe, Yokohama, JP;
Mitsuo Nakajima, Yokohama, JP;
Nobuaki Kabuto, Kunitachi, JP;
Mutsumi Suzuki, Kodaira, JP;
Yoshihisa Ooishi, Yokohama, JP;
Junichi Ikoma, Yokosuka, JP;
Toshimitsu Watanabe, Yokohama, JP;
Mitsuo Nakajima, Yokohama, JP;
Nobuaki Kabuto, Kunitachi, JP;
Mutsumi Suzuki, Kodaira, JP;
Yoshihisa Ooishi, Yokohama, JP;
Junichi Ikoma, Yokosuka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
To improve luminance uniformity in a panel plane, for example, there is set an amplitude of a pixel driving voltage which is an anode current in the neighborhood of a threshold value of electron emission of one pixel and the amplitude is kept as a threshold value correction value for each pixel, and to correct the luminance variation in the high-luminance emission between the pixels, there is set an amplitude of a pixel driving voltage which is an anode current in the neighborhood of a maximum value of electron emission of one pixel and the amplitude is kept as a gain correction value for each pixel. In the configuration, when a video image is displayed, the input video signal is corrected using the threshold correction value and the gain correction value for each pixel.