Abstract:
A package includes a die having a conductive pad at a top surface of the die, a stud bump over and connected to the conductive pad, and a redistribution line over and connected to the stud bump. An electrical connector is over and electrically coupled to the redistribution line.
Abstract:
A method includes molding a polymer onto a package component. The step of molding includes a first molding stage performed at a first temperature, and a second molding stage performed at a second temperature different from the first temperature.
Abstract:
Methods of packaging semiconductor devices and structures thereof are disclosed. In one embodiment, a method of packaging a semiconductor device includes providing a carrier wafer, providing a plurality of dies, and forming a die cave material over the carrier wafer. A plurality of die caves is formed in the die cave material. At least one of the plurality of dies is placed within each of the plurality of die caves in the die cave material. A plurality of packages is formed, each of the plurality of packages being formed over a respective at least one of the plurality of dies.
Abstract:
A wafer level package includes a semiconductor die bonded on a supporting wafer. The semiconductor die has at least a step recess at its substrate. An underfill layer is formed between the semiconductor die and the supporting wafer. Moreover, the height of the underfill layer is limited by the step recess. During a fabrication process of the wafer level package, the step recess helps to reduce the stress on the wafer level package.
Abstract:
The embodiments of mechanisms of wafer-level packaging (WLP) described above utilize a planarization stop layer to determine an end-point of the removal of excess molding compound prior to formation of redistribution lines (RDLs). Such mechanisms of WLP are used to implement fan-out and multi-chip packaging. The mechanisms are also usable to manufacture a package including chips (or dies) with different types of external connections. For example, a die with pre-formed bumps can be packaged with a die without pre-formed bumps.
Abstract:
A device includes a bottom chip and an active top die bonded to the bottom chip. A dummy die is attached to the bottom chip. The dummy die is electrically insulated from the bottom chip.
Abstract:
A method for performing grinding includes selecting a target wheel loading for wafer grinding processes, and performing a grinding process on a wafer. With the proceeding of the grinding process, wheel loadings of the grinding process are measured. The grinding process is stopped after the target wheel loading is reached. The method alternatively includes selecting a target reflectivity of wafer grinding processes, and performing a grinding process on a wafer. With a proceeding of the grinding process, reflectivities of a light reflected from a surface of the wafer are measured. The grinding process is stopped after one of the reflectivities reaches the target reflectivity.
Abstract:
An apparatus includes an enclosure and a door configured to seal the enclosure. The door includes a plate. A rotational apparatus is disposed over the plate. At least one first member with a first arm extends from a first rib of the first member. At least one second member with a second arm extends from a second rib of the second member. The first and second arms are connected to the rotational apparatus. At least one corner member has a first edge. The first edge has a shape corresponding to a shape of a corner of the frame. The corner member is connected to a first end of the third arm. A second end of the third arm is connected to the rotational apparatus. A sealing material is disposed along a first longitudinal side of the first rib and a second longitudinal side of the second rib.
Abstract:
A flash lamp annealing device comprises a heater plate, a loader, a lamp set and a control circuit. The heater plate heats a wafer to a predetermined temperature. The wafer is loaded on the loader disposed on the heater plate. The lamp set has one or a plurality of lamps to provide the wafer with a power. The control circuit is coupled to the lamp set to control the flash time of the lamp set.
Abstract:
Packaging methods and structures for semiconductor devices that utilize a novel die attach film are disclosed. In one embodiment, a method of packaging a semiconductor device includes providing a carrier wafer and forming a die attach film (DAF) that includes a polymer over the carrier wafer. A plurality of dies is attached to the DAF, and the plurality of dies is packaged. At least the carrier wafer is removed from the packaged dies, and the packaged dies are singulated.