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. 20, 2018
Filed:
Nov. 04, 2015
Rohm Co., Ltd., Kyoto, JP;
Noboru Takizawa, Kyoto, JP;
Masaaki Nakayama, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
A lighting device includes light emitting element groups (HSB) including a light emitting element group (HS) that emits light when being applied with a voltage (VH), and a light emitting element group (HS) that emits light when being applied with a voltage (VH) higher than VH, the light emitting element groups (HSB) emitting light when being applied with a voltage equal to or higher than a voltage (VHa); an ICincluding a light emission control unit (HC) arranged to cause light emission of a light emitting element group (HS) if a voltage (Vk) is higher than VHa, and to stop the light emission if Vk is lower than the same; and an ICincluding a light emission control unit (HC) arranged to cause light emission of a group (HSa) if Vk is higher than VHa, and to turn off the group (HSa) if Vk is lower than the same.