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:
Feb. 08, 2022
Filed:
Jul. 23, 2020
Sharp Kabushiki Kaisha, Sakai, JP;
Masamitsu Kobayashi, Osaka, JP;
SHARP KABUSHIKI KAISHA, Sakai, JP;
Abstract
In an image display device having a backlight including a plurality of light sources, the backlight is divided into a plurality of areas arranged in the same direction as an order of writing to pixels. A backlight drive circuit sets lighting periods separately for each of the areas and causes the brightness of the light sources to rise and drop in a non-step manner during the corresponding lighting period. In a case where first and second areas are adjacent to each other, there is a period of overlap between a lighting period set for the first area and a lighting period set for the second area, and the period of overlap includes a middle portion in which the brightness of light sources corresponding to the first area drops and the brightness of light sources corresponding to the second area rises.