US5281848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape carrier semiconductor device
Assignee: Sharp Corp
•
Filing: 1991-11-22
•
Granted: 1994-01-25
•
Expires: 2011-11-22
Abstract
Abstract A tape carrier semiconductor device has a resin sealed area not much larger than the size of the semiconductor chip, e.g. substantially not exceeding 2 mm to the outside. A device hole is not larger than an area formed by extending the outer periphery of the semiconductor chip to the outside by 0.3 mm and an epoxy resin of 500-1200 ps in viscosity is used for sealing the chip.
Inventors
- 👤 Yasunori Chikawa
- 👤 Yoshiaki Honda
- 👤 Katsunobu Mori
- 👤 Naoyuki Tajima
- 👤 Takaaki Tsuda
- 👤 Takamichi Maeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:21
CPC Classifications
H; H10; H10W; H10W74/00; H10W74/01; H10W74/10; H10W74/111; H10W74/114; H10W74/40; H10W74/47; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49121
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
113 words
A tape carrier semiconductor device which comprises: a semiconductor chip set within a device mounting hole provided in the tape carrier and sealed therein by an epoxy resin having a viscosity of 500-1200 ps when applied thereto, the inner periphery of the device mounting hole being within an area defined by the outer periphery of the semiconductor chip and a curve formed by extending the outer periphery of the semiconductor chip to the outside by 0.3 mm, the curved epoxy resin filling a gap between the chip and the mounting hole and extending beyond the edges of the chip onto the tape carrier by a maximum dimension of no more than 2 mm.
Claim 2
Dependent Claim
113 words
A tape carrier semiconductor device which comprises: a semiconductor chip set within a device mounting hole provided in the tape carrier and sealed therein by an epoxy resin having a viscosity of 500-1200 ps when applied thereto, the inner periphery of the device mounting hole being within an area defined by the outer periphery of the semiconductor chip and a curve formed by extending the outer periphery of the semiconductor chip to the outside by 0.3 mm, the curved epoxy resin filling a gap between the chip and the mounting hole and extending beyond the edges of the chip onto the tape carrier by a maximum dimension of no more than 2 mm.
Claim 3
Dependent Claim
59 words
The tape carrier semiconductor device according to claim 1 in which a gap size between the inner periphery of the device mounting hole and the outer periphery of the semiconductor chip is narrower at a first portion than at a second portion where a number of inner leads is larger at the second portion than at the first portion.
Claim 4
Dependent Claim
96 words
A tape carrier semiconductor device comprising: a semiconductor chip; a tape carrier having a device mounting hole therein that is larger in size than said chip; said chip being disposed within said hole to define a gap having maximum dimension of no more than 0.3 mm between the outside edges of said chip and the inside edges of said hole; and a cured epoxy resin filling the gap between said chip and said hole and extending beyond the edges of said chip onto said tape carrier by a maximum dimension of no more than 2 mm.
Claim 5
Dependent Claim
96 words
A tape carrier semiconductor device comprising: a semiconductor chip; a tape carrier having a device mounting hole therein that is larger in size than said chip; said chip being disposed within said hole to define a gap having maximum dimension of no more than 0.3 mm between the outside edges of said chip and the inside edges of said hole; and a cured epoxy resin filling the gap between said chip and said hole and extending beyond the edges of said chip onto said tape carrier by a maximum dimension of no more than 2 mm.
Claim 6
Dependent Claim
137 words
A tape carrier semiconductor device comprising: a semiconductor chip; a tape carrier having a device mounting hole therein that is larger in size than said chip; said chip being disposed within said hole to define a gap having a maximum dimension of no more than 0.3 mm between the outside edges of said chip and the inside edges of said hole; a cured epoxy resin filling the gap between said chip and said hole and extending beyond the edges of said chip onto said tape carrier by a maximum dimension of no more than 2 mm; wherein said chip has a differing density of lead connections per unit distance along its edges and wherein the gap dimension between the chip and the hole along the chip edges is directly related to the density of lead connections thereat.
Claim 7
Dependent Claim
137 words
A tape carrier semiconductor device comprising: a semiconductor chip; a tape carrier having a device mounting hole therein that is larger in size than said chip; said chip being disposed within said hole to define a gap having a maximum dimension of no more than 0.3 mm between the outside edges of said chip and the inside edges of said hole; a cured epoxy resin filling the gap between said chip and said hole and extending beyond the edges of said chip onto said tape carrier by a maximum dimension of no more than 2 mm; wherein said chip has a differing density of lead connections per unit distance along its edges and wherein the gap dimension between the chip and the hole along the chip edges is directly related to the density of lead connections thereat.
Claim 8
Dependent Claim
54 words
A tape carrier semiconductor device comprising: a tape carrier to define a semiconductor chip disposed within a hole in the carrier having a gap of no more than 0.3 mm therebetween which gap is filled with a cured epoxy resin that extends beyond the edges of said chip by no more than 2 mm.
Claim 9
Dependent Claim
54 words
A tape carrier semiconductor device comprising: a tape carrier to define a semiconductor chip disposed within a hole in the carrier having a gap of no more than 0.3 mm therebetween which gap is filled with a cured epoxy resin that extends beyond the edges of said chip by no more than 2 mm.
Claim 10
Dependent Claim
89 words
A tape carrier semiconductor device comprising: a tape carrier to define a semiconductor chip disposed within a hole in the carrier having a gap of no more than 0.3 mm therebetween which gap is filled with a cured epoxy resin that extends beyond the edges of said chip by no more than 2 mm; wherein said chip has a varying numbers of lead connections made to its edges and wherein said gap dimension varies along the chip edges as a function of the number of lead connections made thereto.
Claim 11
Dependent Claim
89 words
A tape carrier semiconductor device comprising: a tape carrier to define a semiconductor chip disposed within a hole in the carrier having a gap of no more than 0.3 mm therebetween which gap is filled with a cured epoxy resin that extends beyond the edges of said chip by no more than 2 mm; wherein said chip has a varying numbers of lead connections made to its edges and wherein said gap dimension varies along the chip edges as a function of the number of lead connections made thereto.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-01-24 | 1997-07-26 | 1998-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-01-24 | 2001-07-26 | 2002-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-01-24 | 2005-07-26 | 2006-01-25 | $7700.00 | Window Closed / Lapsed |