摘要:
A housing accommodating a semiconductor chip is set out. The housing and chip may be used for sending and/or receiving radiation. Popular applications of the housing may be in light emitting diodes. The housing includes a conductor strip that is punched into two electrically isolated portions. The housing further includes a cavity extending inwards from the top of the housing. The conductor portions include respective areas that are exposed at the bottom of the cavity. The semiconductor chip is bonded to one of the exposed areas and a wire bonds the chip to the second exposed area. The conductor portions also terminate in exposed electrodes, which allow for electrical connection of the chip with external devices. A window is formed in the cavity and the walls of the housing that form the cavity may be made of a reflective material. The electrodes remain unexposed to the window but for any residual areas about the chip and bonding wire within the first and second exposed areas. By minimizing the area of the conductor exposed to the window, delamination brought about by the different thermal expansions of the window and conductor are minimized and/or eliminated. Likewise, with a reflective housing covering the base of the cavity that accommodates the window, internal radiation reflection is increased over that which was achieved with an exposed conductor.
摘要:
The invention describes a radiation-emitting semiconductor component with a luminescent conversion element, at which the semiconductor body is placed in a recess of the base body. A cup-like area is molded inside of the recess around the semiconductor body, which contains the luminescent conversion element and coats the semiconductor body. The cup-like portion is formed as indentation inside of the recess or as annular border on the base of the recess.
摘要:
A housing accommodating a semiconductor chip is set out. The housing and chip may be used for sending and/or receiving radiation. Popular applications of the housing may be in light emitting diodes. The housing includes a conductor strip that is punched into two electrically isolated portions. The housing further includes a cavity extending inwards from the top of the housing. The conductor portions include respective areas that are exposed at the bottom of the cavity. The semiconductor chip is bonded to one of the exposed areas and a wire bonds the chip to the second exposed area. The conductor portions also terminate in exposed electrodes, which allow for electrical connection of the chip with external devices. A window is formed in the cavity and the walls of the housing that form the cavity may be made of a reflective material. The electrodes remain unexposed to the window but for any residual areas about the chip and bonding wire within the first and second exposed areas. By minimizing the area of the conductor exposed to the window, delamination brought about by the different thermal expansions of the window and conductor are minimized and/or eliminated. Likewise, with a reflective housing covering the base of the cavity that accommodates the window, internal radiation reflection is increased over that which was achieved with an exposed conductor.
摘要:
In a two-pole SMT miniature housing in leadframe technique for semiconductor components, a semiconductor chip is mounted on one leadframe part and is contacted to a further leadframe part. The further leadframe part is conducted out of the housing in which the chip is encapsulated as a solder terminal. No trimming or shaping process is required and the housing is tight and is capable of further miniaturization. The solder terminals as punched parts of the leadframe are conducted projecting laterally from the housing sidewalls residing opposite one another at least up to the housing floor which forms the components' mounting surface. The chip mounting surface and the components' mounting surface form a right angle with one another.
摘要:
The optoelectronic semiconductor component has an optoelectronic semiconductor chip disposed on a chip carrier with an approximately planar chip carrier surface. The semiconductor chip is fastened with predetermined alignment of its optical axis. A plastic base part supports the chip carrier. The semiconductor chip is electrically conductively connected to at least two electrode terminals routed through the base part, and a lens is disposed above the semiconductor chip on top of the base part. The lens is formed with an independently configured cap produced from plastic material. The cap is mechanically form-locked to a support of the base part. When the cap is placed onto the base part, a holder of the cap and the support engage with one another. The holder and the support are configured such that when the cap is placed onto the base part, the two parts are automatically positioned with respect to one another in such a way that the optical axes of the lens and of the semiconductor chip coincide.
摘要:
Radioactive, particularly tritium containing, waste must be stored in such manner that the environment is not endangered. This is done by conditioning the waste and embedding it in concrete whereby a central temperature of the product of 90.degree.-95.degree. C. must not be exceeded and therewith a dilution is necessary. These difficulties are overcome by inserting the waste in a metal matrix so that the waste is pressed with a metal powder at room temperature to molded bodies.
摘要:
A radiation-emitting semiconductor body is provided which, besides an epitaxial semiconductor layer sequence having an active zone that is suitable for generating electromagnetic radiation, has a carrier layer that is intended to mechanically stabilize the epitaxial semiconductor layer sequence. The semiconductor body furthermore has contact structures for electrical contacting of the semiconductor body, which respectively have a volume region and a surface bonding region. The surface bonding region is formed from a material which is different from the material of the volume region.
摘要:
An optoelectronic component (1) is proposed that comprises a housing body (2) and at least one semiconductor chip (8) disposed thereon, said housing body having a base part (13) comprising a connector body (16), on which a connecting conductor material (6, 7) is disposed, and said housing body having a reflector part (14) comprising a reflector body (23), on which a reflector material (9) is disposed, wherein said connector body and said reflector body are preformed separately from each other and said reflector body is disposed on said connector body in the form of a reflector top.
摘要:
Disclosed is a wavelength-converting converter material comprising at least one wavelength-converting phosphor comprising phosphor particles, wherein a portion of said phosphor or all of said phosphor is present in the form of nanoparticles. Also disclosed is a light-emitting optical component comprising such a converter material and a method for producing such components.
摘要:
A luminescence conversion LED having a radiation emitting chip that is connected to electrical connections and is surrounded by a housing that comprises at least a basic body and a cap, the chip being seated on the basic body, in particular in a cutout of the basic body, and the primary radiation of the chip being converted at least partially into longer wave radiation by a conversion element, wherein the cap is formed by a vitreous body, the conversion means being contained in the vitreous body, the refractive index of the vitreous body being higher than 1.6, preferably at least n=1.7.