US4712129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated circuit device with textured bar cover
Assignee: Texas Instruments Inc
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Filing: 1985-09-30
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Granted: 1987-12-08
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Expires: 2005-09-30
Abstract
Abstract A semiconductor integrated circuit device includes a rigid planar member or cover affixed to and overlying at least a portion of the upper surface of a semiconductor integrated circuit bar. The upper surface of the planar member is textured to lock the member to the encapsulating medium, and has a thermal coefficient of expansion similar to that of the integrated circuit bar. According to another aspect of the invention the planar member is formed of a material having a low alpha particle emission.
Inventors
- 👤 John W. Orcutt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:57
CPC Classifications
H; H10; H10W; H10W76/00; H10W76/40; H10W74/00; H10W74/10; H10W74/111; H10W72/00; H10W72/50; H10W72/531; H10W72/536; H10W72/5363
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
76 words
An integrated circuit device comprising: support means; a semiconductor bar affixed to said support means; adhesive means for providing an adhesive layer; and a rigid planar member having a smooth surface, and a textured surface for locking to an encapsulating medium with the smooth surface being affixed to a surface of said bar opposite said support means by the adhesive layer, the adhesive layer being dispersed between the smooth surface and the surface of said bar.
Claim 2
Dependent Claim
76 words
An integrated circuit device comprising: support means; a semiconductor bar affixed to said support means; adhesive means for providing an adhesive layer; and a rigid planar member having a smooth surface, and a textured surface for locking to an encapsulating medium with the smooth surface being affixed to a surface of said bar opposite said support means by the adhesive layer, the adhesive layer being dispersed between the smooth surface and the surface of said bar.
Claim 3
Dependent Claim
25 words
The integrated circuit device of claim 1 wherein said rigid planar member has a temperature coefficient of expansion similar to that of said semiconductor bar.
Claim 4
Dependent Claim
22 words
The integrated circuit device of claim 2 wherein said textured surface of said planar member includes a plurality of grooves formed therein.
Claim 5
Dependent Claim
17 words
The integrated circuit device of claim 2 wherein said textured surface of said planar member is pebbled.
Claim 6
Dependent Claim
24 words
The integrated circuit device of claim 2 wherein said textured surface of said planar member includes a plurality of spaced apart cavities formed therein.
Claim 7
Dependent Claim
16 words
The integrated circuit device of claim 1 wherein said rigid planar member is formed of silicon.
Claim 8
Dependent Claim
78 words
An integrated circuit device comprising: support means; a semiconductor bar affixed to said support means; adhesive means for providing an adhesive layer; a rigid planar member having a smooth surface, and a textured surface for locking to an encapsulating medium with the smooth surface being affixed to a surface of said bar opposite said support means by the adhesive layer and wherein said planar member covers the entire area of said semiconductor bar having active devices formed therein.
Claim 9
Dependent Claim
78 words
An integrated circuit device comprising: support means; a semiconductor bar affixed to said support means; adhesive means for providing an adhesive layer; a rigid planar member having a smooth surface, and a textured surface for locking to an encapsulating medium with the smooth surface being affixed to a surface of said bar opposite said support means by the adhesive layer and wherein said planar member covers the entire area of said semiconductor bar having active devices formed therein.
Claim 10
Dependent Claim
16 words
The integrated circuit device of claim 7 wherein said rigid planar member is formed of silicon.
Claim 11
Dependent Claim
22 words
The integrated circuit device of claim 8 wherein said textured surface of said planar member includes a plurality of grooves formed therein.
Claim 12
Dependent Claim
17 words
The integrated circuit device of claim 8 wherein said textured surface of said planar member is pebbled.
Claim 13
Dependent Claim
24 words
The integrated circuit device of claim 8 wherein said textured surface of said planar member includes a plurality of spaced apart cavities formed therein.
Claim 14
Dependent Claim
93 words
An integrated circuit device comprising: support means; a semiconductor bar affixed to said support means; adhesive means for providing an adhesive layer; a rigid planar member having a smooth surface, and a textured surface for locking to an encapsulating medium with the smooth surface being affixed to a surface of said bar opposite said support means by the adhesive layer, the adhesive layer being dispersed between the smooth surface and the surface of said bar; and a plastic enclosure means for encapsulating said semiconductor bar, said support means, and said rigid planar member.
Claim 15
Dependent Claim
93 words
An integrated circuit device comprising: support means; a semiconductor bar affixed to said support means; adhesive means for providing an adhesive layer; a rigid planar member having a smooth surface, and a textured surface for locking to an encapsulating medium with the smooth surface being affixed to a surface of said bar opposite said support means by the adhesive layer, the adhesive layer being dispersed between the smooth surface and the surface of said bar; and a plastic enclosure means for encapsulating said semiconductor bar, said support means, and said rigid planar member.
Claim 16
Dependent Claim
23 words
The integrated circuit device of claim 12 wherein said textured surface of said rigid planar member includes a plurality of grooves formed therein.
Claim 17
Dependent Claim
25 words
The integrated circuit device of claim 12 wherein said textured surface of said rigid planar member includes a plurality of spaced apart cavities formed therein.
Claim 18
Dependent Claim
18 words
The integrated circuit device of claim 12 wherein said textured surface of said rigid planar member is pebbled.
Claim 19
Dependent Claim
16 words
The integrated circuit device of claim 12 wherein said rigid planar member is formed of silicon.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-07 | 1991-06-08 | 1991-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-07 | 1995-06-08 | 1995-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-07 | 1999-06-08 | 1999-12-08 | $7700.00 | Window Closed / Lapsed |