Abstract: A semiconductor structure includes a die embedded in a molding material, the die having die connectors on a first side; a first redistribution structure at the first side of the die, the first redistribution structure being electrically coupled to the die through the die connectors; a second redistribution structure at a second side of the die opposing the first side; and a thermally conductive material in the second redistribution structure, the die being interposed between the thermally conductive material and the first redistribution structure, the thermally conductive material extending through the second redistribution structure, and the thermally conductive material being electrically isolated.

Abstract: An over-current protection device includes first and second electrode layers and a PTC material layer laminated therebetween. The PTC material layer includes a polymer matrix, and a conductive filler. The polymer matrix has a fluoropolymer. The total volume of the PTC material layer is calculated as 100%, and the fluoropolymer accounts for 47-62% by volume of the PTC material layer. The fluoropolymer has a melt viscosity higher than 3000 Pa·s.

Abstract: An over-current protection device includes a first metal layer, a second metal layer and a heat-sensitive layer laminated therebetween. The heat-sensitive layer exhibits a positive temperature coefficient (PTC) characteristic and includes a polymer matrix and a first conductive filler. The polymer matrix includes a polyolefin-based polymer and a fluoropolymer. The fluoropolymer has a melt flow index higher than 1.9 g/10 min, and the polyolefin-based polymer and the fluoropolymer together form an interpenetrating polymer network (IPN). The first conductive filler has a metal-ceramic compound dispersed in the polymer matrix.

Abstract: An over-current protection device includes a first metal layer, a second metal layer and a heat-sensitive layer laminated therebetween. The heat-sensitive layer exhibits a positive temperature coefficient (PTC) characteristic and includes a first polymer and a conductive filler. The first polymer consists of polyvinylidene difluoride (PVDF), and PVDF exists in different phases such as ?-PVDF, ?-PVDF and ?-PVDF. The total amount of ?-PVDF, ?-PVDF and ?-PVDF is calculated as 100%, and the amount of ?-PVDF accounts for 48% to 55%. The conductive filler has a metal-ceramic compound.

Abstract: An over-current protection device includes a first metal layer, a second metal layer and a heat-sensitive layer laminated therebetween. The heat-sensitive layer exhibits a positive temperature coefficient (PTC) characteristic and includes a first polymer and a conductive filler. The first polymer consists of polyvinylidene difluoride (PVDF), and PVDF exists in different phases such as ?-PVDF, ?-PVDF and ?-PVDF. The total amount of ?-PVDF, ?-PVDF and ?-PVDF is calculated as 100%, and the amount of ?-PVDF accounts for 33% to 42%.

Abstract: An integrated circuit package including electrically floating metal lines and a method of forming are provided. The integrated circuit package may include integrated circuit dies, an encapsulant around the integrated circuit dies, a redistribution structure on the encapsulant, a first electrically floating metal line disposed on the redistribution structure, a first electrical component connected to the redistribution structure, and an underfill between the first electrical component and the redistribution structure. A first opening in the underfill may expose a top surface of the first electrically floating metal line.

Abstract: A semiconductor structure includes a functional die, a dummy die, a redistribution structure, a seal ring and an alignment mark. The dummy die is electrically isolated from the functional die. The redistribution structure is disposed over and electrically connected to the functional die. The seal ring is disposed over the dummy die. The alignment mark is between the seal ring and the redistribution structure, wherein the alignment mark is electrically isolated from the dummy die, the redistribution structure and the seal ring. The insulating layer encapsulates the functional die and the dummy die.

Abstract: A switch includes a body, a pusher and an elastic element. The body includes a cavity including a first portion made therein, a second portion extending to an external face of the body from the first portion, and a shoulder formed between the first portion and the second portion. The pusher includes an expansive end for abutment against the shoulder to keep the pusher on the body and a rounded end extending out of the cavity from the expansive end. The elastic element body presses the expansive end of the pusher against a portion of the body to keep the rounded end of the pusher always out of the cavity.

Abstract: A wrench includes a handle and two sub-wrenches. The handle includes a shank and two pairs of prongs. Each pair of prongs is formed at a corresponding end of the shank. The prongs of each pair are separated from each other by a gap. Each of the sub-wrenches includes a lever and two pairs of sockets. The lever of each of the sub-wrenches is placed between and pivotally connected to a corresponding pair of prongs. Each of the sockets is transversely formed at a corresponding end of the lever and made with a hexagonal cavity of a unique size. Thus, the wrench is adapted for rotating nuts or threaded bolts of eight different sizes.

Abstract: An identifiable tool includes a bit and an identification ring. The bit includes a frusto-conical section formed on an external side. The identification ring includes an identification layer formed on an external side and a frusto-conical section formed on an internal side. The frusto-conical section of the identification ring is in contact with the frusto-conical section of the bit when the identification ring is placed on the bit.

Abstract: A shock-reducing claw hammer includes a hammerhead, a handle and a restraining element. The hammerhead includes a hitting portion formed at an end and two claws formed at another end. The handle is connected to the hammerhead and formed with a bore, a gap in communication with the bore, and a reduced portion so that the bore is located between the gap and the reduced portion. The restraining element includes a flat body and two end tabs extending from the flat body. The flat body is supported on the handle. One of the end tabs is movably inserted in the wide slit. The other end tab is fitted in the narrow slit.

Abstract: A self-cushioning hammer includes a handle, a head formed at an end of the handle, and a cushioning mechanism formed on the handle. The handle includes a front edge, a rear edge, and a centerline extending between the front and rear edges. The includes at least one cutout cut in one of the front and rear edges of the handle.

Abstract: A shock-reducing claw hammer includes a hammerhead, a handle and a restraining element. The hammerhead includes a hitting portion formed at an end and two claws formed at another end. The handle is connected to the hammerhead and formed with a bore, a gap in communication with the bore, and a reduced portion so that the bore is located between the gap and the reduced portion. The restraining element includes a flat body and two end tabs extending from the flat body. The flat body is supported on the handle. One of the end tabs is movably inserted in the wide slit. The other end tab is fit in the narrow slit.

Abstract: An identifiable tool includes a bit and an identification ring. The bit includes a frusto-conical section formed on an external side. The identification ring includes an identification layer formed on an external side and a frusto-conical section formed on an internal side. The frusto-conical section of the identification ring is in contact with the frusto-conical section of the bit when the identification ring is placed on the bit.

Abstract: A hammer includes a head, a handle pivotally connected to the head, and a buffer assembly arranged between the head and the handle. The buffer assembly includes a compression spring and a sheath. The compression spring is compressed between the head and the handle. The sheath is used to protectively cover the compression spring.

Abstract: A multi-purpose hammer includes a hammer head connected to a handle. The hammer head includes an anvil, two claws, a horn and a protuberance. The claws extend substantially opposite to the anvil. The horn extends from one of the claws. The protuberance is formed between the anvil and the claws.

Abstract: A tool is provided with a sheath. The sheath includes at least one hollow body. The hollow body includes a space with an open end and a closed end opposite to the open end so that a tip of a tool can be inserted in the space through the open end.