Optical bonding composition for LED light source
First Claim
Patent Images
1. An LED light source comprising:
- an LED die;
an optical element optically coupled to the LED die; and
a bonding layer comprising surface-modified metal oxide nanoparticles in an amorphous silicate network, the bonding layer bonding the LED die and the optical element together;
wherein the surface-modified nanoparticles are selected from the group consisting of silicon oxide, aluminum oxide, zirconium oxide, titanium oxide, zinc oxide, tantalum oxide, niobium oxide, lanthanum oxide, strontium oxide, yttrium oxide, hafnium oxide, tin oxide, antimony oxide, and combinations thereof;
and wherein the optical element comprises an optical glass having a refractive index of at least about 1.7.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed herein is an optical bonding composition that may be used in optical applications. An LED light source that utilizes the composition is also disclosed, as well as a method of making it. The LED light source may comprise: an LED die; an optical element optically coupled to the LED die; and a bonding layer comprising surface-modified metal oxide nanoparticles in an amorphous silicate network, the bonding layer bonding the LED die and the optical element together. Efficiency of the LED light source may be increased when using an optical extractor as the optical element.
-
Citations
20 Claims
-
1. An LED light source comprising:
-
an LED die; an optical element optically coupled to the LED die; and a bonding layer comprising surface-modified metal oxide nanoparticles in an amorphous silicate network, the bonding layer bonding the LED die and the optical element together; wherein the surface-modified nanoparticles are selected from the group consisting of silicon oxide, aluminum oxide, zirconium oxide, titanium oxide, zinc oxide, tantalum oxide, niobium oxide, lanthanum oxide, strontium oxide, yttrium oxide, hafnium oxide, tin oxide, antimony oxide, and combinations thereof; and wherein the optical element comprises an optical glass having a refractive index of at least about 1.7. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A method of making an LED light source, the method comprising:
-
a) providing an LED die; b) providing an optical element; c) providing a optical bonding composition comprising surface-modified metal oxide nanoparticles and a source of silicon in an aqueous solution having a pH greater than about 8, the source of silicon selected from the group consisting of silicate, silane, silicic acid, polymeric forms of silicic acid, alkoxysilane, and combinations thereof; and d) bonding the LED die and the optical element together by contacting the LED die and the optical element with the optical bonding composition. - View Dependent Claims (19, 20)
-
Specification