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:
Sep. 09, 2014
Filed:
Aug. 19, 2010
Yasumori Kuromizu, Osaka, JP;
Yasumori Kuromizu, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
Uneven brightness is less likely to occur in a backlight unit. In a backlight unit, suppose that a maximum value and a minimum value of light reflectance of at least a first surfaceof a diffuser platefacing a hot cathode tubeare defined as Rmax Rmin, respectively, a rising proximal position BP of each rising portionof a reflection sheetis provided to overlap with an area of the diffuser platehaving light reflectance R that satisfies the Expression given below, and a rising distal position EP of each rising portionis provided not to overlap with an area of the diffuser platehaving the light reflectance R that satisfies the Expression given below.(Rmax−Rmin)/2+Rmin<R