Semiconductor device having shield wiring for noise suppression

Details Semiconductor device having shield wiring for noise suppression Semiconductor device having shield wiring for noise suppression

1993-11-10

1997-01-14

Hajec, Donald T.

Active solid-state devices (e.g., transistors, solid-state diode

Combined with electrical contact or lead

Of specified material other than unalloyed aluminum

257630, 257659, 257211, H01L 2348

Patent

active

055942792

ABSTRACT:
A semiconductor device in which shield wiring is arranged between the semiconductor substrate and the power source wiring for supplying the power source potential or ground potential. Noise, as represented by variations in the potential of the semiconductor substrate, is substantially prevented from transferring to the aforementioned power source wiring by the shield wiring. In one aspect, shield wiring 1 is arranged between Vss wiring for supplying potential to the various circuits on the semiconductor substrate and substrate 7. This shield wiring 1 is connected to grounding lead frame 18 via M1 intra-chip wiring 4, M2 intra-chip wiring 5, connecting part 40, bonding pad 3 and bonding wire 8. Since the coupling impedance between shield wiring 1 and substrate 7 (due almost solely to the electrostatic capacitance Css) is large, and coupling impedance between Vss wiring 2 and substrate 7 (due almost solely to the junction capacitance D) is low, the noise caused by variations in the potential of substrate 7 is transferred to shield wiring 1, while it is not appreciably transferred to Vss wiring 2.

REFERENCES:
patent: 4924293 (1990-05-01), Saito et al.
patent: 5027176 (1991-06-01), Saika et al.
patent: 5136357 (1992-08-01), Hesson et al.
patent: 5179539 (1993-01-01), Horiguchi et al.
patent: 5345105 (1994-09-01), Sun et al.

Affiliated with

Also associated with

Rating

Semiconductor device having shield wiring for noise suppression 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 device having shield wiring for noise suppression, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semiconductor device having shield wiring for noise suppression will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1390366