摘要:
An apparatus includes a non-planar semiconductor body; and a contact for the semiconductor body. The contact includes an epitaxial material that is formed on and contacts the semiconductor body. The contact includes a second material that is formed on and contacts the epitaxial material; and the second material at least partially conforms to an undercut of the epitaxial material.
摘要:
This chip package includes a substrate having a multilayer electroplated stack disposed on a surface of the substrate. The multilayer electroplated stack may include one or more instances of alternating layers of gold and tin, where relative thicknesses of the alternating layers, when melted, result in a chemical composition having an initial melting temperature to form a bump and a subsequent melting temperature to reflow the bump that is higher than the initial melting temperature. For example, the chemical composition may correspond to a non-equilibrium gold-tin alloy.
摘要:
A method for interconnecting two conductors includes creating a first nickel layer on a first conductor of an electrical component, producing a first non-gold protective layer on the first nickel layer, the first non-gold protective layer being configured to prevent the first nickel layer from oxidizing, creating a second nickel layer on a second conductor, producing a second non-gold protective layer on the second nickel layer, the second non-gold protective layer being configured to prevent the second nickel layer from oxidizing, and interconnecting the first and second nickel layers using a solder layer that interfaces with the first and second nickel layers between the first and second conductors.
摘要:
A chip packaging structure includes a chip and a film substrate. The chip is formed with a gold bump, and the film substrate is formed with an inner lead, wherein the gold bump includes a first bonding surface and a plurality of side walls. The gold bump is electrically connected to the inner lead through a eutectic material coverage layer, and the first bonding surface and at least one of the plurality of side walls are covered by the eutectic material coverage layer.
摘要:
In order to provide a light emitting device having high connection reliability, the light-emitting device includes a board provided with a wiring pattern, an anisotropic conductive paste arranged on an board electrode of the wiring pattern, and a light-emitting element embedded in the anisotropic conductive paste, and at least one of the board electrode and the element electrode is plated with an AuSn alloy layer. The anisotropic conductive paste contains an epoxy compound, an acid anhydride, white inorganic particles, and conductive particles obtained by coating resin particles with an Au coating layer. It is possible to maintain electrical connection between the board electrode and the element electrode by the Au coating layers of the conductive particles even when a crack is generated in a eutectic bonding portion. Therefore, it is possible to obtain high connection reliability.
摘要:
A method for bonding wafers includes forming a first bonding part on a surface of a first wafer by stacking a diffusion preventing layer formed of a material having low wettability with AuSn above the first wafer and forming a bonding layer on a surface of the diffusion preventing layer such that the bonding layer stays back of an edge of the diffusion preventing layer, forming a second bonding part on a surface of a second wafer, and bonding the first bonding part and the second bonding part by eutectic bonding with an AuSn solder under a condition that the first wafer and the second wafer are opposed to each other.
摘要:
The present application relates to an electronic device. The electronic device includes a first electronic component and a second electronic component. The first electronic component includes a first pad area including first pads and second pads spaced apart from the first pads. A number of the first pads is greater than a number of the second pads. The second electronic component includes first bumps electrically connected to the first pads, and second bumps electrically connected to the second pads. Each of the second bumps has a bonding area greater than a bonding area of each of the first bumps. A conductive adhesive layer is disposed between the first electronic component and the second electronic component to electrically connect the first pads to the first bumps.
摘要:
A method of bonding a first substrate to a second substrate, wherein the first substrate includes first electrical contacts on a top surface of the first substrate, and wherein the second substrate includes second electrical contacts on a bottom surface of the second substrate. The method includes forming a block of polyimide on the top surface of the first substrate, wherein the block of polyimide has a rounded upper corner, and vertically moving the top surface of the first substrate and the bottom surface of the second substrate toward each other until the first electrical contacts abut the second electrical contacts, wherein during the moving, the second substrate makes contact with the rounded upper corner of the polyimide causing the first and second substrates to move laterally relative to each other.
摘要:
Embodiments herein may relate to an apparatus with a ball grid array (BGA) package that includes a plurality of solder balls of an off-eutectic material. In embodiments, the respective solder balls of the plurality of solder balls may form solder joints between a substrate of the BGA and a second substrate. In some embodiments the joints may be less than approximately 0.6 micrometers from one another. Other embodiments may be described and/or claimed.
摘要:
The present invention provides a circuit board including a substrate, at least one lead, at least one bump, and a solder layer. The lead is disposed on the substrate, and the bump is disposed on the lead. The solder layer covers the lead and the bump.