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:
Oct. 19, 2010
Filed:
Oct. 26, 2007
Sakae Watanabe, Mutsuzawa, JP;
Hiroshi Kurihara, Mobara, JP;
Seiichi Nishiyama, Mobara, JP;
Hitachi Displays, Ltd., Chiba-Ken, JP;
Hitachi Display Devices, Ltd., Chiba-Ken, JP;
Abstract
The present invention provides a display device of high brightness which can eliminate brightness irregularities on a display surface while preventing the degradation of display quality attributed to an undesired electric field generated at the time of performing inverter driving of the cold cathode fluorescent lamps of a backlight. In a liquid crystal display device, a plurality of cold cathode fluorescent lamps of a backlight unit is arranged along a short axis of the display device. The cold cathode fluorescent lamp has a high-voltage electrode thereof connected to an inverter circuit and a ground electrode thereof connected to a ground. Further, the plurality of cold cathode fluorescent lamps arranged along the short axis have electrodes thereof arranged alternately between the high-voltage electrode and the ground electrode.