Semiconductor device manufacturing: process – Packaging or treatment of packaged semiconductor – Making plural separate devices
Patent
1996-06-05
1998-08-11
Graybill, David
Semiconductor device manufacturing: process
Packaging or treatment of packaged semiconductor
Making plural separate devices
438112, 438113, 257670, 257672, 257674, 257676, 257692, H01L 2128
Patent
active
057926760
ABSTRACT:
Disclosed herein are a method of fabricating a power semiconductor device having joiners that (205) vertically extend from outer sides of leads (203, 204) of a tie bar (201) of a power circuit lead frame (20) respectively, while joiners (308) vertically extend from outer sides of leads (303, 307) of a tie bar (301) of a control circuit lead frame (30) respectively to be opposed thereto. Forward end portions (205a) of the joiners (205) are joined to rear surfaces of forward end portions (308a) of the joiners (308) at a device center portion.
REFERENCES:
patent: 4794431 (1988-12-01), Park
patent: 5147815 (1992-09-01), Casto
patent: 5313095 (1994-05-01), Tagawa et al.
patent: 5438021 (1995-08-01), Tagawa et al.
Masumoto Toshikazu
Takahama Shinobu
Graybill David
Mitsubishi Denki & Kabushiki Kaisha
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