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:
Oct. 13, 2020
Filed:
Oct. 07, 2019
Genesis Photonics Inc., Tainan, TW;
Cheng-Wei Hung, Tainan, TW;
Long-Chi Tu, Tainan, TW;
Jui-Fu Chang, Tainan, TW;
Chun-Ming Tseng, Tainan, TW;
Yun-Chu Chen, Tainan, TW;
Genesis Photonics Inc., Tainan, TW;
Abstract
A light-emitting device including at least one light-emitting unit, a wavelength conversion adhesive layer, and a reflective protecting element is provided. The light-emitting unit has an upper surface and a lower surface opposite to each other. The light-emitting unit includes two electrode pads, and the two electrode pads are located on the lower surface. The wavelength conversion adhesive layer is disposed on the upper surface. The wavelength conversion adhesive layer includes a low-concentration fluorescent layer and a high-concentration fluorescent layer. The high-concentration fluorescent layer is located between the low-concentration fluorescent layer and the light-emitting unit. The width of the high-concentration fluorescent layer is W. The width of the low-concentration fluorescent layer is W. The width of the light-emitting unit is W. The light-emitting device further satisfies the following inequalities: W<W, W<Wand 0.8<W/W≤1.2. Furthermore, a manufacturing method of the light-emitting device is also provided.