摘要:
Provided is a technique for enhancing heat dissipation properties in dissipating heat generated in an electrode to a heatsink without impairing bonding properties between the electrode and a wire. In a semiconductor device, a portion of an electrode within an inner region defined by a case, at one surface, i.e., the lower surface with respect to a position in which a wire is connected, a resin portion is provided, the resin portion extending from an inner wall of the case to an upper-surface side of the heatsink. Additionally, in the portion of the electrode within the inner region defined by the case, at one surface, i.e., the lower surface with respect to a position in which the wire is not connected, a thermal conductor is provided, the thermal conductor having higher heat conductivity than the resin portion.
摘要:
A method of manufacturing a lead frame includes providing an electrically conductive layer having a plurality of holes at a top surface. The plurality of holes form a structure of leads and a die pad on the electrically conductive layer. The plurality of holes are filled with a non-conductive material. Next; an electrically conductive foil is attached on the top surface of the electrically conductive layer and the non-conductive epoxy material. The, the electrically conductive foil is etched to create a network of leads, die pad, bus lines, dam bars and tie lines, wherein the bus lines connect the leads to the dam bar, the dam bar is connected to the tie line and the tie line is connected to the die pad.
摘要:
A semiconductor package including a plurality of stacked semiconductor die, and methods of forming the semiconductor package, are disclosed. In order to ease wirebonding requirements on the controller die, the controller die may be mounted directly to the substrate in a flip chip arrangement requiring no wire bonds or footprint outside of the controller die. Thereafter, a spacer layer may be affixed to the substrate around the controller die to provide a level surface on which to mount one or more flash memory die. The spacer layer may be provided in a variety of different configurations.
摘要:
An uneven return current is prevented and increase in a loss is suppressed in a power conversion apparatus at the time of inverter operation. The invention includes first and second transistor switch groups in each of which arms are connected in parallel, and sense resistors for detecting a drain current are connected to the first and second transistor switch groups, and a first drive circuit group and the second drive circuit group include means for monitoring a sense current flowing through the sense resistors and a plurality of delay circuits. Further, rising of the plurality of transistor switch groups is controlled by controlling activation and non-activation of the plurality of delay circuits on the basis of a magnitude of the sense current.
摘要:
A semiconductor device and a method of making the same. The semiconductor device includes a semiconductor substrate mounted on a carrier. The semiconductor substrate includes a Schottky diode. The Schottky diode has an anode and a cathode. The semiconductor device also includes one or more bond wires connecting the cathode to a first electrically conductive portion of the carrier. The semiconductor device further includes one or more bond wires connecting the anode to a second electrically conductive portion of the carrier. The first electrically conductive portion of the carrier is electrically isolated from the second electrically conductive portion of the carrier. The first electrically conductive portion of the carrier is configured to provide shielding against electromagnetic interference associated with switching of the anode during operation of the device. Both the cathode and the first electrically conductive portion of the carrier are electrically isolated from a backside of the semiconductor substrate.
摘要:
A semiconductor module includes: a first semiconductor chip including a surface provided with a first signal electrode; a second semiconductor chip arranged apart from the first semiconductor chip and including a surface on the first semiconductor chip side provided with a second signal electrode; a first signal lead electrically connected to the first signal electrode; and a second signal lead electrically connected to the second signal electrode. The first signal lead and the second signal lead are arranged so that a height position of the first signal lead and a height position of the second signal lead match in a height direction that is toward the second semiconductor chip from the first semiconductor chip.
摘要:
Provided are capacitive micromachined ultrasonic transducer (CMUT) probes that use wire bonding. A CMUT probe includes a CMUT chip which includes a plurality of first electrode pads which are disposed on a first surface thereof, a printed circuit board (PCB) which is disposed on the first surface of the CMUT chip and which is configured to expose the plurality of first electrode pads, a plurality of second electrode pads which are disposed on the PCB and which correspond to respective ones of the plurality of first electrode pads, and a plurality of wires which connect each respective one of the plurality of first electrode pads to the corresponding one of the plurality of second electrode pads.
摘要:
A semiconductor device includes a multilayer interconnect layer formed over a substrate, an outer peripheral cell column disposed along an edge of the substrate in a plan view, the outer peripheral cell column including a first I/O cell, first and second inner peripheral cell columns formed at an inner peripheral side of the outer peripheral cell column, the first and second inner peripheral cell columns including a second I/O cell, and signal interconnects for forming an internal circuit of the semiconductor device, arranged between the first inner peripheral cell column and the second inner peripheral cell column.
摘要:
A method and apparatus for mixed wire bonding and staggered bonding pad placement. A first plurality of bonding pads is arranged on a semiconductor device. A second plurality of bonding pads is also arranged on the semiconductor device. The bonding pads of the second plurality of bonding pads are arranged in a staggered pattern, such that the first and second pluralities of bonding pads form one of a plurality of double rows of bonding pads on the semiconductor device.
摘要:
A lead frame device may include an integral die pad member, two separate finger members, a central body portion, each of the finger members have a top and a bottom surface connected by a peripheral edge surface. The lead frame also has a first ear portion, and a second ear portion, each has an ear top surface and an ear bottom surface coplanar with the top surface and bottom surface of the central body portion. The lead frame also has a first longitudinally extending groove and second longitudinally extending groove separate the first ear portion and the second ear portion from the central portion. The first ear portion and the second ear portion each have an abutment surface.