摘要:
A solder system (14) includes a lead (Pb) indicator and a solder flux. A method for forming a semiconductor device includes providing a carrier (52), applying the solder system to the carrier (54), coupling the terminal to the carrier via the solder system (56), melting the solder system to attach the terminal to the carrier and form a completed semiconductor device (58), and determining if the completed semiconductor device has a different predetermined property from the solder system (60).
摘要:
Disclosed is a semiconductor package picker. The semiconductor package picker does not seal a gap formed between a ball grid array (BGA) and a pad, but create strong negative pressure in the gap, thereby allowing the pad to pick up the semiconductor pad. The semiconductor package picker reliably picks up the BGA package even if the BGA is formed on an upper surface of the BGA package in addition to a bottom surface thereof.
摘要:
This invention comprises a process for fabricating a MEMS microstructure in a sealed cavity wherein the etchant entry holes are created as a by-product of the fabrication process without an additional step to etch holes in the cap layer (20). The process involves extending the layers of sacrificial material (12, 16) past the horizontal boundaries of the cap layer (20). The cap layer (20) is supported by pillars (21) formed by a deposition in holes etched through the sacrificial layers (12,16), and the etchant entry holes are formed when the excess sacrificial material (12, 16) is etched away, leaving voids between the pillars (21) supporting the cap.
摘要:
The invention relates to a wafer level packaging process and to a component packaged in this way. It is an object of the invention to provide a process of this type which ensures a high yield, is also suitable for optical and/or micromechanical components and achieves improved thermo-mechanical decoupling of the connections from the functional regions. According to the process of the invention, the base substrate is divided into body regions and connection regions, the body regions in each case extending over the functional regions and the connection regions being offset with respect to the contact-connection recesses. The component is then thinned in the body regions or the connection regions until it has different thicknesses in the body regions and the connection regions, before the wafer assembly is diced into chips.
摘要:
A number of electronic die are attached to an interconnect structure (e.g., a lead frame, a substrate, a panel, or a strip). The die are encapsulated to provide a number of unsingulated packages of an overall package assembly. The unsingulated packages are then tested, and test results for each package are automatically marked on encapsulant corresponding to the package. The packages are then singulated after the automated machine marking, and sorted according to the markings.
摘要:
An integrated circuit (60) is packaged, in one embodiment, by wire bonding to pads (76, 78) supported by tape (83). The tape (83) also supports traces (80, 82) that run from the wire bonded location (76) to a pad for solder balls (90, 94). A heat spreader (69) is thermally connected to the integrated circuit (60) and is located not just in the area under the die (60) but also extends to the edge of the package in the area outside the wire bonding location. This outer area (68) is thermally connected to the area (66) under the die (60) by thermal bars (66) that run between some of the wire bond locations (76, 78). During the manufacturing of the package the heat spreader (69) is connected to slotted rails by tie bars (48, 50, 52, 54). During singulation, the tie bars (48, 50, 52, 54) are easily broken or sawed because they are significantly reduced in thickness from the thickness of the heat spreader (66) as a whole.
摘要:
The invention relates to a method for producing a substrate (1) comprising a conductor assembly (4, 41, 42) that is suitable for use at high frequencies, said substrate having improved high-frequency characteristics. The method comprises the following steps: deposition of a structured glass layer (9, 91, 92, 93, 13) comprising at least one opening (8) above a contact region (71 - 74) by vapour deposition on the substrate (1); and application of at least one conductor structure (100, 111, 112, 113) to the glass layer (9, 91 - 93), which is in electric contact with the contact region (71 - 74).
摘要:
While a vicinity of a bottom surface-side region of a pressure-sensitive adhesive sheet (3) corresponding to an adhesion region (R1) of a semiconductor chip (1) are sucked and held, a plurality of protruding portions (30) of a removing member (21) are brought into contact with the bottom surface of the semiconductor chip through the adhesive sheet at the region. Also, the adhesive sheet is sucked in between the respective protruding portions so as to change a surface bonding of the semiconductor chip to the adhesive sheet by adhesion to a point bonding, and further the removing member is moved along the bottom surface of the semiconductor chip so as to change a position of the point bonding and decrease bonding force to the adhesive sheet by the adhesion. Then, the semiconductor chip is removed from the adhesive sheet.
摘要:
This invention comprises a process for fabricating a MEMS microstructure in a sealed cavity wherein the etchant entry holes are created as a by-product of the fabrication process without an additional step to etch holes in the cap layer (20). The process involves extending the layers of sacrificial material (12, 16) past the horizontal boundaries of the cap layer (20). The cap layer (20) is supported by pillars (21) formed by a deposition in holes etched through the sacrificial layers (12,16), and the etchant entry holes are formed when the excess sacrificial material (12, 16) is etched away, leaving voids between the pillars (21) supporting the cap.
摘要:
A method of making a lead frame and a partially patterned lead frame package with near-chip scale packaging (CSP) lead-counts is disclosed, wherein the method lends itself to better automation of the manufacturing line as well as to improving the quality and reliability of the packages produced therefrom. This is accomplished by performing a major portion of the manufacturing process steps with a partially patterned strip of metal formed into a web-like lead frame on one side, in contrast with the conventional fully etched stencil-like lead frames, so that the web-like lead frame, which is solid and flat on the other side is also rigid mechanically and robust thermally to perform without distortion or deformation during the chip-attach and wire bond processes, both at the chip level and the package level. The bottom side of the metal lead frame is patterned to isolate the chip-pad and the wire bond contacts only after the front side, including the chip and wires, is hermetically sealed with an encapsulant. The resultant package being electrically isolated enables strip testing and reliable singulation without having to cut into any additional metal. The use of the instant partially patterned lead frame in making ELP, ELPF and ELGA-type CSPs is also disclosed.