摘要:
Disclosed are thermally conductive plates. Each plate is configured such that a uniform adhesive-filled gap may be achieved between the plate and a heat generating structure when the plate is bonded to the heat generating structure and subjected to a temperature within a predetermined temperature range that causes the heat generating structure to warp. Additionally, this disclosure presents the associated methods of forming the plates and of bonding the plates to a heat generating structure. In one embodiment the plate is curved and modeled to match the curved surface of a heat generating structure within the predetermined temperature range. In another embodiment the plate is a multi-layer conductive structure that is configured to undergo the same warpage under a thermal load as the heat generating structure. Thus, when the plate is bonded with the heat generating structure it is able to achieve and maintain a uniform adhesive-filled gap at any temperature.
摘要:
A module or assembly is formed by interposing a polymer between a carrier and a semiconductor device to be secured to the carrier. The polymer has ionized metallic particles suspended in it. Before setting or curing the polymer, the module is exposed to an electric field which induces migration of the metallic particles to the opposing pads of the carrier and semiconductor device. Such migration ultimately forms metal dendrites extending between mating pad pairs. The dendrites establish a metallurgical bond and conductive paths between the carrier and the overlying semiconductor device. When the polymer is subsequently set, the carrier and device are not only adhered to each other, but the dendrite connections are fixed and structurally reinforced to provide the needed electrically conductive paths.
摘要:
A module or assembly is formed by interposing a polymer between a carrier and a semiconductor device to be secured to the carrier. The polymer has ionized metallic particles suspended in it. Before setting or curing the polymer, the module is exposed to an electric field which induces migration of the metallic particles to the opposing pads of the carrier and semiconductor device. Such migration ultimately forms metal dendrites extending between mating pad pairs. The dendrites establish a metallurgical bond and conductive paths between the carrier and the overlying semiconductor device. When the polymer is subsequently set, the carrier and device are not only adhered to each other, but the dendrite connections are fixed and structurally reinforced to provide the needed electrically conductive paths.
摘要:
The present invention relates generally to a new scheme of providing a seal band for semi-conductor substrates and chip carriers. More particularly, the invention encompasses a structure and a method that uses a multi-layer metallic seal to provide protection to chips on a chip carrier. This multi-layer metal seal provides both enhanced hermeticity lifetime and environmental protection. For the preferred embodiment the multi-layer metallic seal band is a three layer, solder sandwich structure which is used to create a low cost, high reliability, hermetic seal for the module. This solder sandwich has a high melting temperature thick solder inner core, and lower melting point thin interconnecting solder layers, where the thin interconnecting solder layers may have similar or different melting points.
摘要:
The present invention provides chip containing electronic devices such as Multichip Ceramic Modules (MCM's) containing a plurality of chips on a substrate which chips are underfilled with a reworkable composition which allows one or more chips to be removed from the device and replaced. The reworkable compositions contain a base resin which is not cross-linkable and which forms a matrix with a linear curable component or preferably a combination of linear curable components which curable components are cross-linkable and when cured form a cross-linked domain in the base resin matrix. A suitable cross-linking catalyst such as Pt is used and optionally a filler preferably silane surface treated silica. The preferred base resin is linear polydimethylsiloxane and the preferred curable components are vinyl terminated linear poly dimethyl siloxane and hydrogen terminated linear poly dimethyl siloxane.
摘要:
Disclosed are thermally conductive plates. Each plate is configured such that a uniform adhesive-filled gap may be achieved between the plate and a heat generating structure when the plate is bonded to the heat generating structure and subjected to a temperature within a predetermined temperature range that causes the heat generating structure to warp. Additionally, this disclosure presents the associated methods of forming the plates and of bonding the plates to a heat generating structure. In one embodiment the plate is curved and modeled to match the curved surface of a heat generating structure within the predetermined temperature range. In another embodiment the plate is a multi-layer conductive structure that is configured to undergo the same warpage under a thermal load as the heat generating structure. Thus, when the plate is bonded with the heat generating structure it is able to achieve and maintain a uniform adhesive-filled gap at any temperature.
摘要:
The present invention provides chip containing electronic devices such as Multichip Ceramic Modules (MCM's) containing a plurality of chips on a substrate which chips are underfilled with a reworkable composition which allows one or more chips to be removed from the device and replaced. The reworkable compositions contain a base resin which is not cross-linkable and which forms a matrix with a linear curable component or preferably a combination of linear curable components which curable components are cross-linkable and when cured form a cross-linked domain in the base resin matrix. A suitable cross-linking catalyst such as Pt is used and optionally a filler preferably silane surface treated silica. The preferred base resin is linear polydimethylsiloxane and the preferred curable components are vinyl terminated linear poly dimethyl siloxane and hydrogen terminated linear poly dimethyl siloxane.
摘要:
Disclosed are thermally conductive plates. Each plate is configured such that a uniform adhesive-filled gap may be achieved between the plate and a heat generating structure when the plate is bonded to the heat generating structure and subjected to a temperature within a predetermined temperature range that causes the heat generating structure to warp. Additionally, this disclosure presents the associated methods of forming the plates and of bonding the plates to a heat generating structure. In one embodiment the plate is curved and modeled to match the curved surface of a heat generating structure within the predetermined temperature range. In another embodiment the plate is a multi-layer conductive structure that is configured to undergo the same warpage under a thermal load as the heat generating structure. Thus, when the plate is bonded with the heat generating structure it is able to achieve and maintain a uniform adhesive-filled gap at any temperature.
摘要:
The present invention provides chip containing electronic devices such as Multichip Ceramic Modules (MCM's) containing a plurality of chips on a substrate which chips are underfilled with a reworkable composition which allows one or more chips to be removed from the device and replaced. The reworkable compositions contain a base resin which is not cross-linkable and which forms a matrix with a linear curable component or preferably a combination of linear curable components which curable components are cross-linkable and when cured form a cross-linked domain in the base resin matrix. A suitable cross-linking catalyst such as Pt is used and optionally a filler preferably silane surface treated silica. The preferred base resin is linear polydimethylsiloxane and the preferred curable components are vinyl terminated linear poly dimethyl siloxane and hydrogen terminated linear poly dimethyl siloxane.
摘要:
Disclosed are thermally conductive plates. Each plate is configured such that a uniform adhesive-filled gap may be achieved between the plate and a heat generating structure when the plate is bonded to the heat generating structure and subjected to a temperature within a predetermined temperature range that causes the heat generating structure to warp. Additionally, this disclosure presents the associated methods of forming the plates and of bonding the plates to a heat generating structure. In one embodiment the plate is curved and modeled to match the curved surface of a heat generating structure within the predetermined temperature range. In another embodiment the plate is a multi-layer conductive structure that is configured to undergo the same warpage under a thermal load as the heat generating structure. Thus, when the plate is bonded with the heat generating structure it is able to achieve and maintain a uniform adhesive-filled gap at any temperature.