Semiconductor package having reduced thickness

Active solid-state devices (e.g. – transistors – solid-state diode – Lead frame – With structure for mounting semiconductor chip to lead frame

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C257S666000

Reexamination Certificate

active

11492481

ABSTRACT:
A semiconductor package is disclosed that comprises a chip paddle and a semiconductor chip that has a plurality of bond pads. The semiconductor chip is located on an upper surface of the chip paddle. Leads are formed at intervals along the perimeter of the chip paddle. The leads are in electrical communication with the bond pads. The semiconductor chip, the chip paddle and the leads are encapsulated by an encapsulation material. The height of the semiconductor package of the invention is minimized by half etching the chip paddle to reduce the thickness of the chip paddle such that the thickness of the chip paddle is less than the thickness of the leads. Preferably, the chip paddle of the present invention is about 25-75% of the thickness of the leads.

REFERENCES:
patent: 2596993 (1952-05-01), Gookin
patent: 3435815 (1969-04-01), Forcier
patent: 3734660 (1973-05-01), Davies et al.
patent: 3838984 (1974-10-01), Crane et al.
patent: 4054238 (1977-10-01), Lloyd et al.
patent: 4189342 (1980-02-01), Kock
patent: 4258381 (1981-03-01), Inaba
patent: 4289922 (1981-09-01), Devlin
patent: 4301464 (1981-11-01), Otsuki et al.
patent: 4332537 (1982-06-01), Slepcevic
patent: 4417266 (1983-11-01), Grabbe
patent: 4451224 (1984-05-01), Harding
patent: 4530152 (1985-07-01), Roche et al.
patent: 4541003 (1985-09-01), Otsuka et al.
patent: 4646710 (1987-03-01), Schmid et al.
patent: 4707724 (1987-11-01), Suzuki et al.
patent: 4727633 (1988-03-01), Herrick
patent: 4737839 (1988-04-01), Burt
patent: 4756080 (1988-07-01), Thorp, Jr. et al.
patent: 4812896 (1989-03-01), Rothgery et al.
patent: 4862245 (1989-08-01), Pashby et al.
patent: 4862246 (1989-08-01), Masuda et al.
patent: 4907067 (1990-03-01), Derryberry
patent: 4920074 (1990-04-01), Shimizu et al.
patent: 4935803 (1990-06-01), Kalfus et al.
patent: 4942454 (1990-07-01), Mori et al.
patent: 4987475 (1991-01-01), Schlesinger et al.
patent: 5018003 (1991-05-01), Yasunaga
patent: 5029386 (1991-07-01), Chao et al.
patent: 5041902 (1991-08-01), McShane
patent: 5057900 (1991-10-01), Yamazaki
patent: 5059379 (1991-10-01), Tsutsumi et al.
patent: 5065223 (1991-11-01), Matsuki et al.
patent: 5070039 (1991-12-01), Johnson et al.
patent: 5087961 (1992-02-01), Long et al.
patent: 5091341 (1992-02-01), Asada et al.
patent: 5096852 (1992-03-01), Hobson
patent: 5118298 (1992-06-01), Murphy
patent: 5122860 (1992-06-01), Kichuchi et al.
patent: 5134773 (1992-08-01), LeMaire et al.
patent: 5151039 (1992-09-01), Murphy
patent: 5157475 (1992-10-01), Yamaguchi
patent: 5157480 (1992-10-01), McShane et al.
patent: 5168368 (1992-12-01), Gow, 3rd et al.
patent: 5172213 (1992-12-01), Zimmerman
patent: 5172214 (1992-12-01), Casto
patent: 5175060 (1992-12-01), Enomoto et al.
patent: 5200362 (1993-04-01), Lin et al.
patent: 5200809 (1993-04-01), Kwon
patent: 5214845 (1993-06-01), King et al.
patent: 5216278 (1993-06-01), Lin et al.
patent: 5218231 (1993-06-01), Kudo
patent: 5221642 (1993-06-01), Burns
patent: 5250841 (1993-10-01), Sloan et al.
patent: 5252853 (1993-10-01), Michii
patent: 5258094 (1993-11-01), Furui et al.
patent: 5266834 (1993-11-01), Nishi et al.
patent: 5273938 (1993-12-01), Lin et al.
patent: 5277972 (1994-01-01), Sakumoto et al.
patent: 5278446 (1994-01-01), Nagaraj et al.
patent: 5279029 (1994-01-01), Burns
patent: 5281849 (1994-01-01), Singh Deo et al.
patent: 5294897 (1994-03-01), Notani et al.
patent: 5327008 (1994-07-01), Djennas et al.
patent: 5332864 (1994-07-01), Liang et al.
patent: 5335771 (1994-08-01), Murphy
patent: 5336931 (1994-08-01), Juskey et al.
patent: 5343076 (1994-08-01), Katayama et al.
patent: 5358905 (1994-10-01), Chiu
patent: 5365106 (1994-11-01), Watanabe
patent: 5381042 (1995-01-01), Lerner et al.
patent: 5391439 (1995-02-01), Tomita et al.
patent: 5406124 (1995-04-01), Morita et al.
patent: 5410180 (1995-04-01), Fujii et al.
patent: 5414299 (1995-05-01), Wang et al.
patent: 5417905 (1995-05-01), LeMaire et al.
patent: 5424576 (1995-06-01), Djennas et al.
patent: 5428248 (1995-06-01), Cha
patent: 5435057 (1995-07-01), Bindra et al.
patent: 5444301 (1995-08-01), Song et al.
patent: 5452511 (1995-09-01), Chang
patent: 5454905 (1995-10-01), Fogelson
patent: 5474958 (1995-12-01), Djennas et al.
patent: 5484274 (1996-01-01), Neu
patent: 5493151 (1996-02-01), Asada et al.
patent: 5508556 (1996-04-01), Lin
patent: 5517056 (1996-05-01), Bigler et al.
patent: 5521429 (1996-05-01), Aono et al.
patent: 5528076 (1996-06-01), Pavio
patent: 5534467 (1996-07-01), Rostoker
patent: 5539251 (1996-07-01), Iverson et al.
patent: 5543657 (1996-08-01), Diffenderfer et al.
patent: 5544412 (1996-08-01), Romero et al.
patent: 5545923 (1996-08-01), Barber
patent: 5581122 (1996-12-01), Chao et al.
patent: 5592019 (1997-01-01), Ueda et al.
patent: 5592025 (1997-01-01), Clark et al.
patent: 5594274 (1997-01-01), Suetaki
patent: 5595934 (1997-01-01), Kim
patent: 5604376 (1997-02-01), Hamburgen et al.
patent: 5608265 (1997-03-01), Kitano et al.
patent: 5608267 (1997-03-01), Mahulikar et al.
patent: 5625222 (1997-04-01), Yoneda et al.
patent: 5633528 (1997-05-01), Abbott et al.
patent: 5639990 (1997-06-01), Nishihara et al.
patent: 5640047 (1997-06-01), Nakashima
patent: 5641997 (1997-06-01), Ohta et al.
patent: 5643433 (1997-07-01), Fukase et al.
patent: 5644169 (1997-07-01), Chun
patent: 5646831 (1997-07-01), Manteghi
patent: 5650663 (1997-07-01), Parthasarathi
patent: 5661088 (1997-08-01), Tessier et al.
patent: 5665996 (1997-09-01), Williams et al.
patent: 5673479 (1997-10-01), Hawthorne
patent: 5683806 (1997-11-01), Sakumoto et al.
patent: 5689135 (1997-11-01), Ball
patent: 5696666 (1997-12-01), Miles et al.
patent: 5701034 (1997-12-01), Marrs
patent: 5703407 (1997-12-01), Hori
patent: 5710064 (1998-01-01), Song et al.
patent: 5723899 (1998-03-01), Shin
patent: 5724233 (1998-03-01), Honda et al.
patent: 5726493 (1998-03-01), Yamashita
patent: 5736432 (1998-04-01), Mackessy
patent: 5745984 (1998-05-01), Cole, Jr. et al.
patent: 5753532 (1998-05-01), Sim
patent: 5753977 (1998-05-01), Kusaka et al.
patent: 5766972 (1998-06-01), Takahashi et al.
patent: 5770888 (1998-06-01), Song et al.
patent: 5776798 (1998-07-01), Quan et al.
patent: 5783861 (1998-07-01), Son
patent: 5801440 (1998-09-01), Chu et al.
patent: 5814877 (1998-09-01), Diffenderfer et al.
patent: 5814881 (1998-09-01), Alagaratnam et al.
patent: 5814883 (1998-09-01), Sawai et al.
patent: 5814884 (1998-09-01), Davis et al.
patent: 5817540 (1998-10-01), Wark
patent: 5818105 (1998-10-01), Kouda
patent: 5821457 (1998-10-01), Mosley et al.
patent: 5821615 (1998-10-01), Lee
patent: 5834830 (1998-11-01), Cho
patent: 5835988 (1998-11-01), Ishii
patent: 5844306 (1998-12-01), Fujita et al.
patent: 5856911 (1999-01-01), Riley
patent: 5859471 (1999-01-01), Kuraishi et al.
patent: 5866939 (1999-02-01), Shin et al.
patent: 5871782 (1999-02-01), Choi
patent: 5874784 (1999-02-01), Aoki et al.
patent: 5877043 (1999-03-01), Alcoe et al.
patent: 5886397 (1999-03-01), Ewer
patent: 5886398 (1999-03-01), Low et al.
patent: 5894108 (1999-04-01), Mostafazadeh et al.
patent: 5897339 (1999-04-01), Song et al.
patent: 5900676 (1999-05-01), Kweon et al.
patent: 5903049 (1999-05-01), Mori
patent: 5903050 (1999-05-01), Thurairajaratnam et al.
patent: 5909053 (1999-06-01), Fukase et al.
patent: 5915998 (1999-06-01), Stidham et al.
patent: 5917242 (1999-06-01), Ball
patent: 5939779 (1999-08-01), Kim
patent: 5942794 (1999-08-01), Okumura et al.
patent: 5951305 (1999-09-01), Haba
patent: 5959356 (1999-09-01), Oh
patent: 5969426 (1999-10-01), Baba et al.
patent: 5973388 (1999-10-01), Chew et al.
patent: 5976912 (1999-11-01), Fukutomi et al.
patent: 5977613 (1999-11-01), Takata et al.
patent: 5977615 (1999-11-01), Yamaguchi et al.
patent: 5977630 (1999-11-01), Woodworth et al.
patent: 5981314 (1999-11-01), Glenn et al.
patent: 5986333 (1999-11-01), Nakamura
patent: 5986885 (1999-11-01), Wyland
patent: 6001671 (1999-12-01), Fjelstad
patent: 6013947 (2000-01-01), Lim
patent: 6018189 (2000-01-01), Mizuno
patent: 6020625 (2000-02-01), Qin et al.
patent: 6025640 (2000-02-01), Yagi et al.
patent: 6031279 (2000-02-01), Lenz
patent: RE3

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Semiconductor package having reduced thickness does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Semiconductor package having reduced thickness, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semiconductor package having reduced thickness will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3916074

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.