摘要:
Method of forming a plastic element include dispensing a quantity of a liquid precursor material into a first die mold, positioning a carrier tape on the first die mold above the dispensed liquid precursor material, bringing a second die mold into contact with the carrier tape and the first die mold, and applying pressure to the first die mold and the second die mold. The liquid precursor material may include a liquid silicone.
摘要:
Semiconductor light emitting device packaging methods include fabricating a substrate configured to mount a semiconductor light emitting device thereon. The substrate may include a cavity configured to mount the semiconductor light emitting device therein. The semiconductor light emitting device is mounted on the substrate and electrically connected to a contact portion of the substrate. The substrate is liquid injection molded to form an optical element bonded to the substrate over the semiconductor light emitting device. Liquid injection molding may be preceded by applying a soft resin on the electrically connected semiconductor light emitting device in the cavity. Semiconductor light emitting device substrate strips are also provided.
摘要:
A packaged light emitting device includes a substrate, a solid state light emitting device on the substrate, a first generally toroidal lens on the substrate and defining a cavity relative to the solid state light emitting device and having a first index of refraction, and a second lens at least partially within the cavity formed by the first lens and having a second index of refraction that is different from the first index of refraction. The second index of refraction may be higher than the first index of refraction. The lenses may be mounted on the substrate and/or may formed by dispensing and curing liquid encapsulant materials.
摘要:
A solid state lighting tile (10) includes a substrate having a planar surface. A first plurality of solid state light emitting devices (LEDs) are on the substrate. The first plurality of LEDs (19) are connected in series to form a first string of LEDs of a first color having an anode contact (22) at a first end of the tile and a cathode contact (24) at a second end of the tile. A second plurality of LEDs are on the substrate. The second plurality of LEDs (21) are connected in series to form a second string of LEDs of the first color having a cathode contact (28) at the first end of the tile and an anode contact (26) at the second end of the tile.
摘要:
A packaged LED device having a textured encapsulant that is conformal with a mount surface on which at least one LED chip is disposed. The textured encapsulant, which can be textured using an additive or subtractive process, is applied to the LED either prior to or during packaging. The encapsulant includes at least one textured surface from which light is emitted. The textured surface helps to reduce total internal reflection within the encapsulant, improving the extraction efficiency and the color temperature uniformity of the output profile. Several chips can be mounted beneath a single textured encapsulant. A mold having irregular surfaces can be used to form multiple encapsulants over many LEDs simultaneously.
摘要:
Method of forming a plastic element include dispensing a quantity of a liquid precursor material into a first die mold, positioning a carrier tape on the first die mold above the dispensed liquid precursor material, bringing a second die mold into contact with the carrier tape and the first die mold, and applying pressure to the first die mold and the second die mold. The liquid precursor material may include a liquid silicone.
摘要:
A lighting device such as a light bulb is disclosed. The lighting device includes an optical sub-assembly adapted to generate light when electrically excited; a body sub-assembly thermally coupled to the optical sub-assembly to draw heat away from the optical sub-assembly and to dissipate it; an electrical sub-assembly electrically connecting the optical sub-assembly to the body sub-assembly; and a final assembly covering at least a portion of the optical sub-assembly.
摘要:
A packaged LED device having a textured encapsulant that is conformal with a mount surface on which at least one LED chip is disposed. The textured encapsulant, which can be textured using an additive or subtractive process, is applied to the LED either prior to or during packaging. The encapsulant includes at least one textured surface from which light is emitted. The textured surface helps to reduce total internal reflection within the encapsulant, improving the extraction efficiency and the color temperature uniformity of the output profile. Several chips can be mounted beneath a single textured encapsulant. A mold having irregular surfaces can be used to form multiple encapsulants over many LEDs simultaneously.
摘要:
A modular package for a light emitting device includes a leadframe including a first region having a top surface, a bottom surface and a first thickness and a second region having a top surface, a bottom surface and a second thickness that is less than the first thickness. The leadframe further includes an electrical lead extending laterally away from the second region, and the package further includes a thermoset package body on the leadframe and surrounding the first region. The thermoset package body may be on both the top and bottom surfaces of the second region. A leak barrier may be on the leadframe, and the package body may be on the leak barrier. Methods of forming modular packages including thermoset package bodies on leadframes are also disclosed.
摘要:
A submount for a light emitting device package includes a substrate. A first bond pad and a second bond pad are on a first surface of the substrate. The first bond pad includes a die attach region offset toward a first end of the substrate and configured to receive a light emitting diode thereon. The second bond pad includes a bonding region between the first bond pad and the second end of the substrate and a second bond pad extension that extends from the bonding region along a side of the substrate toward a corner of the substrate at the first end of the substrate. First and second solder pads are a the second surface of the substrate. The first solder pad is adjacent the first end of the substrate and contacts the second bond pad. The second solder pad is adjacent the second end of the substrate and contacts the first bond pad. Related LED packages and methods of forming LED packages are disclosed.