Method for making plurality of leadframes having grooves contain

Details Method for making plurality of leadframes having grooves contain Method for making plurality of leadframes having grooves contain

1995-02-03

1997-11-25

Pham, Long

Fishing, trapping, and vermin destroying

437217, 437220, 257672, 257676, 257775, H01L 2348

Patent

active

056912412

ABSTRACT:
A semiconductor device includes a lead frame which has an island portion on which a semiconductor chip is mounted and which is coated with a sealing resin, inner lead portions which are connected to electrodes of the semiconductor chip and are coated with the sealing resin; and outer lead portions which are continuously extended from the inner lead portions and are not coated with the sealing resin. The island portion and inner lead portions are formed to be smaller in thickness than the outer lead portions by, for example, rolling a roller along a material for the lead frame.

REFERENCES:
patent: 3947867 (1976-03-01), Duffek et al.
patent: 4099200 (1978-07-01), Koutalides
patent: 4663651 (1987-05-01), Gilder, Jr. et al.
patent: 4761518 (1988-08-01), Butt et al.
patent: 4771330 (1988-09-01), Long
patent: 4796078 (1989-01-01), Phelps, Jr. et al.
patent: 4872260 (1989-10-01), Johnson et al.
patent: 4920074 (1990-04-01), Shimizu et al.
patent: 4994411 (1991-02-01), Naito et al.
patent: 5014113 (1991-05-01), Casto
patent: 5041395 (1991-08-01), Steffen
patent: 5128281 (1992-07-01), Dyer et al.
patent: 5151771 (1992-09-01), Hiroi et al.
patent: 5362679 (1994-11-01), Wakefield
patent: 5378656 (1995-01-01), Kajihara et al.
patent: 5391439 (1995-02-01), Tomita et al.
patent: 5451813 (1995-09-01), Kazutaka

Affiliated with

Also associated with

Rating

Method for making plurality of leadframes having grooves contain does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for making plurality of leadframes having grooves contain, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for making plurality of leadframes having grooves contain will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2106546