摘要:
A mounting substrate for a semiconductor light emitting device includes a thermally conductive mounting block. The mounting block has, in a first face thereof, a cavity that is configured to mount a semiconductor light emitting device therein and to reflect light that is emitted by the semiconductor light emitting device that is mounted therein away from the cavity. A conductive lead inserted into the mounting block extends into the cavity. The conductive lead is electrically isolated from the mounting block and has an exposed contact portion in the cavity. The conductive lead may be a plurality of conductive leads each having an exposed contact portion at different locations in the cavity. Related packaging methods also may be provided.
摘要:
Methods for fabricating LED packages comprising providing an LED chip and covering at least part of it with a liquid medium. An optical element is provided and placed on the liquid medium. The optical element is allowed to settle to a desired level and the liquid medium is cured. LED packages are also disclosed that are fabricated using the disclosed methods.
摘要:
A mounting substrate for a semiconductor light emitting device includes a solid metal block having a cavity in a face thereof that is configured for mounting a semiconductor light emitting device therein. An insulating coating is provided in the cavity, and first and second spaced apart conductive traces are provided on the insulating coating in the cavity that are configured for connection to a semiconductor light emitting device. The mounting substrate may be fabricated by providing a solid aluminum block including a cavity in a face thereof that is configured for mounting a semiconductor light emitting device therein. The solid aluminum block is oxidized to form an aluminum oxide coating thereon. The first and second spaced apart electrical traces are fabricated on the aluminum oxide coating in the cavity.
摘要:
A display panel for a flat panel display includes an array of LCD devices and an array of LED devices that are configured to radiate light in a light path that impinges on the array of LCD devices, to provide backlighting on the array of LCD devices. A solid colloidal dispersion of particles of a first material having a first index of refraction dispersed in a second material having a second index of refraction, such as a solid foam structure, is provided in the light path to reduce spatial non-uniformity of the backlighting.
摘要:
A composite optical lens is disclosed. The composite optical lens includes a concave bottom surface adapted to receive light, reflective surface adapted to reflect the received light, and optical surface through which the reflected light leaves the optical lens. The concave bottom surface defines a concave cavity allowing placement of at least a portion of a light emitting device within the concave cavity. The concave bottom surface, the optical surface, or both may have predetermined optical finish to operate on the light such as diffusing or focusing the light. The reflective surface can be coated, designed, or both for total internal reflection effect.
摘要:
A light emitting die package and a method of manufacturing the die package are disclosed. The die package includes a leadframe, at least one light emitting device (LED), a molded body, and a lens. The leadframe includes a plurality of leads and has a top side and a bottom side. A portion of the leadframe defines a mounting pad. The LED device is mounted on the mounting pad. The molded body is integrated with portions of the leadframe and defines an opening on the top side of the leadframe, the opening surrounding the mounting pad. The molded body further includes latches on the bottom side of the leadframe. The lens is coupled to the molded body. A composite lens is used as both reflector and imaging tool to collect and direct light emitted by LED(s) for desired spectral and luminous performance.
摘要:
A transmissive optical element is fabricated by filling a mold with molten liquid that includes a transparent plastic and a phosphor additive, and allowing the molten liquid to solidify to produce the transmissive optical element having phosphor dispersed therein. Accordingly, a separate phosphor coating or phosphor-containing encapsulant need not be used. Transmissive optical elements include a shell made of transparent plastic with a phosphor dispersed therein. The phosphor may be uniformly and/or nonuniformly dispersed in the shell.
摘要:
A light emitting apparatus is disclosed. The light emitting apparatus includes a substrate, a heat sink, a dielectric layer, conductive traces, a reflector, and at least one photonic device. The substrate has a top surface and a bottom surface, a portion of the top surface defining a mounting pad. The heat sink is equipped with cooling fins to cool the substrate. The conductive traces are on the top surface of the substrate and extend from the mounting pad to a side edge of the substrate. The reflector is attached to the top surface of the substrate. The reflector surrounds the mounting pad partially covering the top surface of the substrate. The photonic device is attached to the substrate at the mounting pad, the photonic device connected to at least one conductive trace. The light emitting apparatus can be mounted on a board having connection traces. The connection traces of the board are aligned with the conductive trace of the light emitting apparatus to effect electrical connection.
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.