Abstract:
A device includes: a substrate; and a doped III-V compound layer disposed over the substrate; wherein: the doped III-V compound layer includes an upper boundary; the upper boundary has a micro-roughened texture and a macro-roughened texture where the micro-roughened texture located on; and the upper boundary includes dopant ions that are not present in a remainder of the doped III-V compound layer underneath the upper boundary.
Abstract:
A light-emitting diode (LED) element includes a substrate and a GaN layer formed on the substrate. The GaN layer includes a boundary layer including a surface of the GaN opposing the substrate. The surface has a micro-roughening texture and a macro-roughening texture. The boundary layer includes at least one of As, Si, P, Ge, C, B, F, N, Sb, and Xe ions.
Abstract:
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.
Abstract:
A shadow mask assembly includes a securing assembly configured to hold a substrate that is configured to hold a plurality of dies. The securing assembly includes a number of guide pins and a shadow mask comprising holes for the guide pins, said holes allowing the guide pins freedom of motion in one direction. The securing assembly includes a number of embedded magnets configured to secure the shadow mask to the securing assembly.
Abstract:
A method of forming a through-silicon-via (TSV) opening includes forming a TSV opening through a substrate. A recast of a material of the substrate on sidewalls of the TSV opening is removed with a first chemical. The sidewalls of the TSV opening are cleaned with a second chemical by substantially removing a residue of the first chemical.
Abstract:
A method of light-emitting diode (LED) packaging includes coupling a number of LED dies to corresponding bonding pads on a sub-mount. A mold apparatus having concave recesses housing LED dies is placed over the sub-mount. The sub-mount, the LED dies, and the mold apparatus are heated in a thermal reflow process to bond the LED dies to the bonding pads. Each recess substantially restricts shifting of the LED die with respect to the bonding pad during the heating.
Abstract:
A method includes forming an opening in a substrate, and the opening completely extends through the substrate. A recast material is formed on sidewalls of the substrate exposed by the opening. A first chemical is applied in the opening to remove the recast material, wherein a residue of the first chemical remains on portions of the sidewalls after the applying of the first chemical. Moreover, A second chemical is applied in the opening to remove the residue of the first chemical, and the second chemical is different from the first chemical.
Abstract:
A shadow mask assembly includes a securing assembly configured to hold a substrate that is configured to hold a plurality of dies. The securing assembly includes a number of guide pins and a shadow mask comprising holes for the guide pins, said holes allowing the guide pins freedom of motion in one direction. The securing assembly includes a number of embedded magnets configured to secure the shadow mask to the securing assembly.
Abstract:
A plurality of conductive pads are disposed on a substrate. A plurality of semiconductor dies are each disposed on a respective one of the conductive pads. A mold device is positioned over the substrate. The mold device contains a plurality of recesses that are each configured to accommodate a respective one of the semiconductor dies underneath.
Abstract:
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.