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. 16, 2013
Filed:
Nov. 27, 2006
Hidenao Kubota, Yokohama, JP;
Yuzo Nishinaka, Chigasaki, JP;
Yuki Iwane, Chigasaki, JP;
Yutaka Yamada, Yokohama, JP;
Katsunobu Kimura, Yokohama, JP;
Hidenao Kubota, Yokohama, JP;
Yuzo Nishinaka, Chigasaki, JP;
Yuki Iwane, Chigasaki, JP;
Yutaka Yamada, Yokohama, JP;
Katsunobu Kimura, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
It is an object of the present invention to provide an image display apparatus which enables cost reduction while being free from electromagnetic interference problems. A power supply circuit comprises, on a single circuit board, an AC inlet to which a power cord is connected from an external AC power supply, a filter circuit to which an inductance element is connected to suppress leakage of electromagnetic waves to the outside of the image display apparatus, and a switch which switches on/off an AC output supplied from the filter circuit. The circuit board of the power supply circuit is entirely covered by electromagnetic shielding means to shield electromagnetic waves. The electromagnetic shielding means is composed of, for example, a first shielding section which surrounds the lateral side of the circuit board and a second shielding section which covers the upper side of the circuit board. The second shielding section is formed of a part of the flat section of a rear cover of the image display apparatus.