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:
Dec. 01, 2020
Filed:
Sep. 11, 2019
Sharp Kabushiki Kaisha, Sakai, JP;
Hisashi Watanabe, Sakai, JP;
Hirotoshi Yasunaga, Sakai, JP;
Youzou Kyoukane, Sakai, JP;
Takeshi Masuda, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, JP;
Abstract
A lighting device includes light sources, a light source substrate, and a reflection sheet. The light source substrate includes a plate-shaped base including a mounting surface on which mounting portions are formed. The light sources are mounted on the mounting portions with solders. The reflection sheet includes an insulating sheet, a reflection layer, and holes. The reflection layer includes a metal thin film stacked on the insulating sheet. The holes are drilled through the reflection layer and the insulating sheet at positions corresponding to the light sources so that the light sources are exposed through the holes. The light source substrate and the reflection sheet are bonded together with an adhesive layer. The insulating sheet is made of a material having a heat resistance higher than a melting temperature of the solders and an elastic modulus lower than that of the base of the light source substrate.