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. 28, 2024
Filed:
Oct. 26, 2021
Zhejiang Super Lighting Electric Appliance Co., Ltd, Zhejiang, CN;
Tao Jiang, Jiaxing, CN;
Wei-Hong Xu, Jianxing, CN;
Yukihiro Saito, Jiaxing, JP;
Hayato Unagiike, Jiaxing, JP;
Ai-Ming Xiong, Jiaxing, CN;
Jun-Feng Xu, Jiaxing, CN;
Yi-Ching Chen, Taichung, TW;
ZHEJIANG SUPER LIGHTING ELECTRIC APPLIANCE CO., LTD, Zhejiang, CN;
Abstract
An LED filament comprising a plurality of LED filament units, each of the plurality of LED filament units includes a LED chip with an upper surface and a lower surface opposite to the upper surface of the LED chip, and a light conversion layer comprising a top layer and a base layer, and the base layer comprises an upper surface and a lower surface opposite to the upper surface of the base layer, where the top layer with an upper surface and a lower surface opposite to the upper surface of the top layer is disposed on at least two sides of each of the LED chips, the lower surface of each of the LED chips is close to the upper surface of the base layer, and the upper surface of the top layer is away from each of the LED chips.