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:
May. 13, 2014
Filed:
Sep. 16, 2009
Naoko Kondoh, Osaka, JP;
Toshiyuki Gotoh, Osaka, JP;
Hozumi Nishimura, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
It is expected to provide an image display apparatus and image display method that can reduce the risk that an image quality is undermined due to a halo phenomenon caused by the leak of light passing through a non-corresponding color filter from a LED. The image display apparatus can respectively control luminous efficiencies of plural color LEDs, i.e., R-LED (), G-LED () and B-LED () that emit light through a color filter to a displaying unit. The image display apparatus obtains luminous efficiencies for a frame of RGB image signal (S), calculates a light leak amount and then detects whether the halo phenomenon may occur or not (S-S). When the halo phenomenon is considered to occur, the luminous efficiencies of LEDs () included in the liquid crystal display apparatus are controlled to make the light from the LEDs () become close to white light (S).