Patent ID: 9620934
Date: 2017-04-11
CPC Classifications: H01L,H01S

Claim:
1. A vertical cavity surface emitting laser (VCSEL) flip-chip assembly comprising: a substrate that is transparent to a particular wavelength of light, the substrate having an upper surface and a lower surface; a plurality of electrically conductive contact pads disposed on the upper surface of the substrate in flip chip mounting areas of the upper surface of the substrate; a plurality of VCSEL flip chips, each VCSEL flip chip being mounted in one of the respective flip chip mounting areas, each VCSEL flip chip including a plurality of electrically conductive contact pads, wherein respective electrically conductive contact pads of each VCSEL flip chip are electrically coupled with respective electrically conductive contact pads disposed in the respective flip chip mounting areas of the upper surface of the substrate, each VCSEL flip chip having at least one VCSEL that produces said particular wavelength of light and an aperture formed in a lower surface of the respective VCSEL flip chip through which the light produced by the VCSEL passes out of the respective VCSEL flip chip, and wherein the VCSEL flip chips are mounted with the apertures facing the upper surface of the substrate such that most if not all of the light passing out of the apertures enters the substrate; and a patterned layer of dielectric material disposed on the substrate, wherein the patterned layer includes a plurality openings aligned with the apertures of the VCSEL flip chips, each of the openings including a dam region, each dam region including a barrier and a reservoir surrounding the barrier.