摘要:
The present invention is intended to solve the following problems with a method for fabricating a substrateless semiconductor package using an adhesive sheet as a temporary fixing supporter. A chip can be displaced from a specified position by pressure during resin encapsulation because the chip is not properly held by the adhesive sheet. If such displacement occurs, the relative positional relationship between the chip and an interconnect to be connected to a specified position in a subsequent wiring step also changes by the displacement of the chip from the specified position. Another problem is that if adhesive deposits occur during peeling of the adhesive sheet and the surface of a package is contaminated with the adhesive deposits, adhesive components left on the surface of the chip can inhibit connection between the interconnect and the chip in a subsequent wiring step. To solve these problems, the present invention provides an adhesive sheet for semiconductor device fabrication that is attached to a substrateless semiconductor chip when the chip is encapsulated with resin. The adhesive sheet includes a base material layer and an adhesive layer. The adhesive layer has a specific adhesion strength and peel strength.
摘要:
An improved tip dressing process is provided wherein the pressure between the electrode tip of a resistance welder and the cutter of a tip dresser is varied during the tip dressing process. A pressure controller is also provided for controlling the pressure between the electrode tip and cutter during the tip dressing process. The pressure controller may be applied to independently control the tip dressing process of several resistance welders simultaneously.
摘要:
The present invention provides a heat-resistant adhesive sheet for semiconductor device fabrication that is attached to a substrateless semiconductor chip when the chip is encapsulated with resin. The adhesive sheet includes a base material layer and an adhesive layer. The adhesive layer contains a rubber component and an epoxy resin component. The proportion of the rubber component in an organic substance in the adhesive is in the range of 20 to 60 wt %.
摘要:
The present invention is intended to solve the following problems with a method for fabricating a substrateless semiconductor package using an adhesive sheet as a temporary fixing supporter. A chip can be displaced from a specified position by pressure during resin encapsulation because the chip is not properly held by the adhesive sheet. If such displacement occurs, the relative positional relationship between the chip and an interconnect to be connected to a specified position in a subsequent wiring step also changes by the displacement of the chip from the specified position. Another problem is that if adhesive deposits occur during peeling of the adhesive sheet and the surface of a package is contaminated with the adhesive deposits, adhesive components left on the surface of the chip can inhibit connection between the interconnect and the chip in a subsequent wiring step. To solve these problems, the present invention provides an adhesive sheet for semiconductor device fabrication that is attached to a substrateless semiconductor chip when the chip is encapsulated with resin. The adhesive sheet includes a base material layer and an adhesive layer. The adhesive layer has a specific adhesion strength and peel strength.
摘要:
An adhesive tape for resin-encapsulating used in a method of manufacture of a resin-encapsulated semiconductor device has a base material layer and an adhesive agent layer laminated on the base material layer, a total film thickness of the base material layer and the adhesive agent layer of 25 to 40 μm. According to the adhesive tape for resin encapsulating of the present invention, resin leakage can be efficiently prevented during the resin encapsulating operation.
摘要:
A tip dresser 1 dresses electrode tips 4, 5. The tip dresser 1 is rotated around a rotation axis and includes a holder 2 configured to be rotated around a rotation axis and to have concave tapers 2c, 2d, which make the rotation axis a center, on both faces of the holder 2; and a cutter 3 configured to be fixed to the holder 2 and to be protruded to sides of the electrode tips 4, 5 from the tapers 2c, 2d only at portions of the cutter 3 more inside than outer diameters D1, D2 of the electrode tips 4, 5.
摘要:
The present invention provides a heat-resistant pressure-sensitive adhesive tape for the production of a semiconductor device, including a base material layer and a pressure-sensitive adhesive layer formed on each side of the base material layer, in which at least the pressure-sensitive adhesive layer at a side on which a semiconductor chip is to be encapsulated with a resin contains a silicone pressure-sensitive adhesive. The heat-resistant pressure-sensitive adhesive tape is used for temporarily fixing a chip in a method for producing a substrateless semiconductor package which does not use a metal lead frame.
摘要:
A workpiece composed of a glass plate and a display panel joined to each other via an adhesive sheet is suction-held on both surfaces thereof by a pair of upper and lower holding members. The glass plate is detached from the display panel through swinging downward one end of the lower holding member around a support shaft provided on the other end side thereof with an entire surface of the glass plate being held in a planar state with a suction surface of the lower holding member.
摘要:
The present invention provides a heat-resistant adhesive sheet for semiconductor device fabrication that is attached to a substrateless semiconductor chip when the chip is encapsulated with resin. The adhesive sheet includes a base material layer and an adhesive layer. The adhesive layer contains a rubber component and an epoxy resin component. The proportion of the rubber component in an organic substance in the adhesive is in the range of 20 to 60 wt %.
摘要:
The present invention provides a pressure-sensitive adhesive tape for resin encapsulation in production of a resin encapsulation type semiconductor device, which includes a base material layer which does not have a glass transition temperature in a temperature region of 260° C. or lower and a pressure-sensitive adhesive layer laminated on the base material layer, and a method for producing a resin encapsulation type semiconductor device using the pressure-sensitive adhesive tape. The pressure-sensitive adhesive tape according to the present invention highly prevents resin leakage even under severe conditions as in MAP-QFN production process, does not affect certainty of wire bonding and has excellent peelability after resin encapsulation.