Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Packaged semiconductor device having a flange at its side surface and its manufacturing method










Image Number 8 for United States Patent #5885852.

For manufacturing a packaged semiconductor device, a lead frame with an electrically insulating strip member and a semiconductor chip is placed in a molding unit having upper and lower dies. The upper and lower dies have recessed areas for determining a size of a cavity of the molding unit different from each other, the size of the cavity being measured in a direction perpendicular to a clamping motion direction of the dies. The lead frame is positioned so that a surface of each lead with the insulating strip member applied thereto is contacted with one of the upper and lower dies having a larger recessed area and a molding line of the molding unit intersects the insulating strip member. The molding unit is closed to clamp the lead frame to depress and thrust into spaces between adjacent leads that part of the strip member which is outside the molding line and to form the cavity of the molding unit. By injecting a molding material into the cavity, a molding package is provided encapsulating the semiconductor chip and a portion of each lead. The packaged semiconductor device has a flanged side surface with an insulating strip provided between a step of the flanged side surface and intermediate portions of the leads which are between first portions of the leads encapsulated in the molding package and second portions of the leads protruding from the flanged side surface.








 
 
  Recently Added Patents
Flame retardant thermoplastic elastomers
Terminal device and image printing method
Arcuate motion control in electrostatic actuators
Towel clip
Method of operating an election ballot printing system
Vehicle display system or projection display for a motor vehicle, and calibration method
Processor engine, integrated circuit and method therefor
  Randomly Featured Patents
Electrical connector with slim-line cap
Device for socket-deforming a tube end and for adjusting its length
Compact continuous charging apparatus
Generator endwinding cooling enhancement
Semiconductor memory device generating accurate internal reference voltage
Nanocrystalline phosphor and coated nanocrystalline phosphor as well as method of preparing coated nanocrystalline phosphor
Apparatus and method for measuring lateral charge distribution on a moving web
Bicycle wheel fork assembly
Catalyst, method of producing the catalyst, and polymerization process employing the catalyst
OFDM signal collision position detection apparatus and OFDM reception apparatus