Harvatek Corporation

Bill Chang

Bily Wang

Chin-Mau James Hwang

Yann Lee

Bily Wangn

A surface mounted LED package includes a pair of metal contact plates, an LED mounted to one (or both) metal contact plates, and glue encapsulating the LED and holding the LED and both metal contact plates together to form a LED package to be soldered to a motherboard. The contact plates have side notches and bottom recesses of various shapes and dimensions, as well as through holes extending through the entire width of the contact plates to facilitate the glue flow for filling out the side notches and bottom recesses for improved solidifying of the LED package. The contact plates have portions uncovered by the glue to provide extended areas for soldering to a motherboard.

Wing-shaped surface mount package for light emitting diodes

A colorless light approaching that of white light in nature, is produced by using no more than two color LEDs covered with one or more layers of complementary color phosphorescent glue on an insulating substrate.

White light source

Surface mount diodes are mass produced by first cutting a metal plate to form a plurality of vertical slits within metal plate. Parallel lines are cut midway between the slits to form wings for the slits. The wings are folded to form the bottoms for surface mounting. Glue is applied over the metal plate to form focusing cups.

Mass production technique for surface mount optical device with a focusing cup

A surface-mount package for multiple LED chips is constructed by inscribing a groove in an insulating substrate. The LED chips are mounted in the groove and the leads are connected to metal plates, which wrap around the substrate to provide bottom contacts for surface-mounting.

Multiple LED chip package

A focusing cup is directly glued to two or more preformed folded metal frames. Parts of the top surfaces of the folded metal frames contact the electrodes of semiconductor device placed inside the focusing cup. The bottoms of the metallic frames serve as the bottom contacts for surface mounting to a motherboard. The preformed metallic frames need not withstand the stress of folding and the package can be made thinner than prior art. The elimination of the through holes makes the package narrower. The bottoms of the metallic frames can be aligned one side of the bottom surface of the package, so that the package can be surface-mounted normally to or in parallel with a motherboard with light emitting respectively in parallel with or normally to the surface of the motherboard.

Focusing cup on a folded frame for surface mount optoelectric semiconductor package

The leads of a light emitting device package are extended is flexible pins. These pins can be bent with respect to a motherboard so that the direction of the light entitled from the light emitting device can be adjusted. The package is tab-mounted to the motherboard for heat sinking or serving as a lead.

Adjustable in-line leads for light emitting device package

In a surface mount LED chips mounted on an insulating substrate, plated through conduits to interconnect the chips on both sides are placed at the corners of the outer terminals at two horizontal ends. The depressions caused by wire-bonding the chip to the terminals are lined up vertically with the corner conduits to reduce horizontal dimension.

Surface mount light emitting diode package

A solid state epoxy powder and a solid state fluorescent powder material are mixed in a fixed ratio for application over the surface of an optical device. When the mixture is heated into liquid form and then cooled down, the mixture forms a fluorescent coating which emits colorless light when optical device is excited.

Fluorescent material for packaging optical devices

A plastic focusing cup is directly mounted on the bottom metallic contact plates for surface mounting of an optoelectric diode package. The focusing cup and the metallic contacts are held together by providing through holes in the metallic plates and channels at the bottom surface of the metallic plates for the glue from the focusing cup to flow down from the through holes and spread along the channels

Focusing cup for surface mount optoelectronic diode package

A light emitting diode module is mounted perpendicular to a motherboard, so that the lights emit in a direction parallel to the motherboard. The bottom contacts of the module are lined up on only one side of the module. The contacts are soldered to the motherboard with substrate of the module in vertical position.

Growing community of inventors

Hsin-Chu, Taiwan

Bill Chang