摘要:
Two or more molded ellipsoid lenses are formed on a packaged LED die by injecting a glue material into a mold over the LED die and curing the glue material. After curing, the refractive index of the lens in contact with the LED die is greater than the refractive index of the lens not directly contacting the LED die. At least one phosphor material is incorporated into the glue material for at least one of the lenses not directly contacting the LED die. The lens directly contacting the LED die may also include one or more phosphor material. A high refractive index coating may be applied between the LED die and the lens.
摘要:
An embodiment of the disclosure includes a method of fabricating a plurality of light emitting diode devices. A plurality of LED dies is provided. The LED dies are bonded to a carrier substrate. A patterned mask layer comprising a plurality of openings is formed on the carrier substrate. Each one of the plurality of LED dies is exposed through one of the plurality of the openings respectively. Each of the plurality of openings is filled with a phosphor. The phosphor is cured. The phosphor and the patterned mask layer are polished to thin the phosphor covering each of the plurality of LED dies. The patterned mask layer is removed after polishing the phosphor.
摘要:
The present disclosure provides a method of patterning a phosphor layer on a light emitting diode (LED) emitter. The method includes providing at least one LED emitter disposed on a substrate; forming a polymer layer over the at least one LED emitter; providing a mask over the polymer layer and the at least one LED emitter; etching the polymer layer through the mask to expose the at least one LED emitter within a cavity having polymer layer walls; and coating the at least one LED emitter with phosphor.
摘要:
An optical emitter includes a Light-Emitting Diode (LED) on a package wafer, transparent insulators, and one or more transparent electrical connectors between the LED die and one or more contact pads on the packaging wafer. The transparent insulators are deposited on the package wafer with LED dies attached using a lithography or a screen printing method. The transparent electrical connectors are deposited using physical vapor deposition, chemical vapor deposition, spin coating, spray coating, or screen printing and may be patterned using a lithography process and etching.