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:
Jun. 11, 2019
Filed:
Dec. 21, 2017
Elux Inc., Camas, WA (US);
Kurt Ulmer, Vancouver, WA (US);
Alexey Koposov, Vancouver, WA (US);
eLux, Inc., Vancouver, WA (US);
Abstract
A method is presented for fabricating a light emitting diode (LED) device with a stratified quantum dot (QD) structure. The method provides an LED and a stratified QD structure is formed as follows. A first liquid precursor is deposited overlying the LED emission surface to form a transparent first barrier layer. A second liquid precursor is deposited overlying the first barrier layer to form a first layer of discrete QDs. A third liquid precursor is deposited overlying the first layer of QDs to form a transparent second barrier layer. Subsequent to each barrier layer liquid precursor deposition, an annealing is performed to cure the deposited precursor. The first and second barrier layers act to encapsulate the first layer of QDs. The LED emits a first wavelength of light, and the first layer of QDs converts the first wavelength of light to a first color of light in the visible spectrum.