Abstract:
Attachment devices and methods for use with light emitting devices are provided. In one aspect, the light emitting device can include a submount and a light emission area disposed over the submount. The device can further include at least one attachment member provided on the submount. The attachment member can engage an electrical component thereby providing a gas-tight, solder free connection between the attachment member and electrical component.
Abstract:
Light emitting devices and methods are disclosed. In one embodiment a light emitting device can include a submount and a plurality of light emitting diodes (LEDs) disposed over the submount. At least a portion of the submount can include a reflective layer at least partially disposed below a solder mask. One or more layers within the submount may include one or more holes, a rough surface texture, or combinations thereof to improve adhesion within the device. The device can further include a retention material dispensed about the plurality of LEDs. Devices and methods are disclosed for improved solder mask adhesion.
Abstract:
A light emission package includes at least one solid state emitter, a leadframe including at least one electrical lead and a body structure encasing a portion of the leadframe. A thermal transfer material can be isolated from the at least one electrical lead. The body structure can include a plastic body structure wherein a rim portion can be disposed along a portion of the upper surface of the body structure. The light emission package can also include the at least one solid state emitter mounted over thermal transfer material using a direct metal-to-metal bond such as by eutectic die attachment. The light emission package is operable to emit light with an output of approximately 70% or greater of an initial light output for an extrapolated time of at least approximately 150,000 hours or more.
Abstract:
Light emitting devices for light emitting diodes (LEDs) are disclosed. In one embodiment a light emitting device can include a substrate and a plurality of light emitting diodes (LEDs) disposed over the substrate in patterned arrays. The arrays can include one or more patterns of LEDs. A light emitting device can further include a retention material disposed about the array of LEDs. In one aspect, the retention material can be dispensed.
Abstract:
A luminescent particle includes an interior portion of the luminescent particle comprising a luminescent compound that reacts with atmospherically present components and a passivating layer on an outer surface of the luminescent particle that is operable to inhibit the reaction between the luminescent compound and the atmospherically present components.
Abstract:
Light emitting devices and components having excellent chemical resistance and related methods are disclosed. In one embodiment, a component of a light emitting device can include a silver (Ag) portion, which can be silver on a substrate, and a protective layer disposed over the Ag portion. The protective layer can at least partially include an inorganic material for increasing the chemical resistance of the Ag portion.
Abstract:
Light emitter devices having improved chemical and physical resistance and related methods are disclosed herein. In one embodiment, the light emitter device includes a light emission area with a cavity with one or more light emitting chips disposed within the cavity. The device can further include a filling material at least partially disposed over the one or more light emitting chips. The filling material can include a first discrete layer of phosphor containing material and a second discrete clear barrier layer. The clear barrier layer can include a layer of glass.