Abstract:
A conductive clip having a riser or post formed along a side thereof includes a notch or opening formed in the riser or post to create a first riser or post section and second riser or post section separated by the notch or opening through which a tiebar extends. The conductive clip organization is will suited for formation as elongated strips of such conductive clips for automated machine assembly of the conductive clips in an integrated circuit package context.
Abstract:
A conductive clip having a riser or post formed along a side thereof includes a notch or opening formed in the riser or post to create a first riser or post section and second riser or post section separated by the notch or opening through which a tiebar extends. The conductive clip organization is will suited for formation as elongated strips of such conductive clips for automated machine assembly of the conductive clips in an integrated circuit package context.
Abstract:
A circuit module includes a plurality of electronic components and a single-layer conductive package substrate. The single-layer conductive package substrate is adapted to physically support and electrically interconnect the electronic components. The substrate has a peripheral portion and an interior portion. The peripheral portion includes a plurality of peripheral contact pads coupled to corresponding electronic components. The interior portion includes a plurality of floating contact pads that are electrically isolated from the peripheral contact pads and are coupled to corresponding electronic components.
Abstract:
An apparatus and method for forming a layer of underfill adhesive on an integrated circuit in wafer form is described. In one embodiment, the layer of underfill adhesive is disposed and partially cured on the active surface of the wafer. Once the underfill adhesive has partially cured, the wafer is singulated. The individual integrated circuits or die are then mounted onto a substrate such as a printed circuit board. When the solder balls of the integrated circuit are reflowed to form joints with corresponding contact pads on the substrate, the underfill adhesive reflows and is completely cured. In an alternative embodiment, the underfill adhesive is fully cured after it is disposed onto the active surface of the wafer.
Abstract:
Flip chips with improved solder bump strength are provided. A solder mask layer is placed and patterned on a front side of a wafer of semiconductor chips with semiconductor devices and bond pads. The solder mask is patterned to expose the bond pads. Solder bumps are electrically connected to the bond pads. The solder mask is thick enough to extend up to at least a quarter of the solder bumps and is in contact with the solder bumps. The wafer is then cut into individual chips. The chips may be sold to customers, who may mount the chip on a substrate without underfill.
Abstract:
A method and an apparatus for forming a plastic chip on chip module is disclosed. The plastic chip on chip module is formed by placing a stacked chip set into a molding chamber suitably arranged to receive encapsulant. The stacked chip set includes a daughter chip that is electrically and mechanically coupled to a mother chip where the daughter chip is directly aligned to and separated from the mother chip by a standoff gap. Encapsulant is then passed into the molding chamber filling the standoff gap substantially simultaneously with surrounding the chip set to form the plastic chip on chip module.
Abstract:
A power converter device comprises a substrate, a power die mounted on the substrate, and a capacitor die mounted over the power die in a stacked configuration. The capacitor die is electrically coupled to the power die. A packaging material encapsulates the power die and the capacitor die. An integrated circuit die can also be mounted to the substrate and electrically coupled to the power die to receive power signals from the power die, with the packaging material also encapsulating the integrated circuit die.
Abstract:
Provided herein are optical sensor devices, methods for making the same, and systems including the same. An optical sensor device, according to an embodiment, includes a light detector die and a light source die attached to the same or different die attachment substrates so that there is a space between the light source die and the light detector die. A light transmissive material covers the light detector die, the light source die and at least a portion of the space between the light detector die and the light source die. A groove is formed (e.g., saw, blade or laser cut, or cast) in the light transmissive material between the light detector die and the light source die, and an opaque material is put within the groove to provide a light barrier between the light detector die and the light source die.
Abstract:
A power converter can include an output circuit having a high-side device and a low-side device which can be formed on a single die (a “PowerDie”). The power converter can further include a controller integrated circuit (IC) formed on a different die which can be electrically coupled to, and co-packaged with, the PowerDie. The PowerDie can be attached to a die pad of a leadframe, and the controller IC die can be attached to an active surface of the first die such that the first die is interposed between the controller IC die and the die pad.
Abstract:
An optical sensor device comprises a light source, a light detector, and an opaque light barrier including a first portion to block light from being transmitted directly from the source to the detector. A second portion of the light barrier extends from the first portion in a direction towards the light source, such that a portion of the second portion covers at least a portion of light emitting element(s) of the source, to reduce an amount of specular reflections, if a light transmissive cover plate were placed over the sensor. Additionally, a third portion of the barrier can extend from the first portion, in a direction towards to the detector, such that a portion of the third portion covers at least a portion of light detecting element(s) of the detector, to reduce an amount of specular reflections that would be detected by the detecting element(s) of the detector, if a light transmissive cover plate were placed over the sensor. Additionally, an off-centered lens can cover a portion of the light source.