摘要:
Disclosed is a positive photoresist. The photoresist has as its polymeric component a substantially water and base insoluble, photolabile polymer. The photoresist further includes a photo acid generator that is capable of forming a strong acid. This photo acid generator may be a sulfonate ester derived from a N-hydroxyamide, or a N-hydroxyimide. Finally, the photoresist composition includes an appropriate photosensitizer.
摘要:
The present disclosure provides embodiments of package devices and methods for making package devices for a semiconductor die. One embodiment includes a die mounting structure having a finished bond pad that includes a copper bond pad and a cobalt-containing layer over a top surface of the copper bond pad, and a wire bond structure that is bonded to a top surface of the cobalt-containing layer of the finished bond pad, where cobalt-containing material of the cobalt-containing layer is located between a bottom surface of the wire bond structure and the top surface of the copper bond pad such that the cobalt-containing material is present under a center portion of the wire bond structure.
摘要:
A method of making a package substrate having a copper bond pad and a location for receiving a semiconductor die having a remnant of one of a group consisting of HEDP and an HEDP derivative on a top surface of the copper bond pad. The semiconductor die is attached to the substrate. A wirebond connection is attached between the remnant and the semiconductor die.
摘要:
A method includes providing an integrated circuit (IC) die assembly that includes a substrate and an IC die mounted on a portion of a major surface of the substrate, dispensing an interface material on the IC die, positioning a portion of a heat spreader in contact with the interface material, and dispensing an adhesive between one side of the heat spreader facing the IC die assembly and exposed portions of a major surface of an encapsulant on the substrate.
摘要:
A package structure includes a package substrate having a top surface and a bottom surface. A semiconductor die having a top surface and a bottom surface. The semiconductor die is mounted to the package substrate. The bottom surface of the semiconductor die is adjacent to the top surface of the package substrate. An air gap is between the bottom surface of the package substrate and the bottom surface of semiconductor die.
摘要:
A pad (20) is electrically connected to a first I/O cell (14) while also physically overlying active circuitry of a second I/O cell (16). Note that although the pad (20) overlies the second I/O cell (16), the pad (20) is not electrically connected to the I/O cell (16). Such a pattern may be replicated in any desired manner so that the I/O cells (e.g. 300-310) may have a finer pitch than the corresponding pads (320-324 and 330-335). In addition, the size of the pads may be increased (e.g. pad 131 may be bigger than pad 130) while the width “c” of the I/O cells (132-135) does not have to be increased. Such a pattern (e.g. 500) may be arranged so that the area required in one or more dimensions may be minimized.
摘要:
A packaged semiconductor device having a package substrate that includes a plurality of electrical contacts on a first major surface and a die positioned on a second major surface. Each of the plurality of electrical contacts includes a perimeter portion. A first subset of the electrical contacts have more than fifty percent of the perimeter portion bounded by a solder mask. A second subset of the electrical contacts have less than fifty percent of the perimeter portion bounded by a solder mask. The die is positioned over only the first subset of the electrical contacts.
摘要:
A method for forming a molded die assembly includes attaching a first major surface of a semiconductor die onto a package substrate; attaching a heat spreader to a second major surface of the semiconductor die, wherein the second major surface is opposite the first major surface, and wherein the semiconductor die, package substrate, and heat spreader form a die assembly; conforming a die release film to a transfer mold; closing the transfer mold around the die assembly such that the die release film is compressed against the heat spreader and a cavity is formed around the die assembly; transferring a thermoset material into the cavity; and releasing the die assembly from the die release film and the transfer mold.
摘要:
A packaged semiconductor device includes a package substrate, a semiconductor die on the package substrate, an encapsulant over the semiconductor die and package substrate, and a heat spreader having a pedestal portion and an outer portion surrounding the pedestal portion. The encapsulant includes an opening within a perimeter of the semiconductor die. The bottom surface of the pedestal portion of the heat spreader faces the top surface of the semiconductor die, wherein a first portion of the opening and at least a portion of the encapsulant is between the bottom surface of the pedestal portion and the semiconductor die.
摘要:
A method for forming a molded die assembly includes attaching a first major surface of a semiconductor die onto a package substrate; attaching a heat spreader to a second major surface of the semiconductor die, wherein the second major surface is opposite the first major surface, and wherein the semiconductor die, package substrate, and heat spreader form a die assembly; conforming a die release film to a transfer mold; closing the transfer mold around the die assembly such that the die release film is compressed against the heat spreader and a cavity is formed around the die assembly; transferring a thermoset material into the cavity; and releasing the die assembly from the die release film and the transfer mold.