US6159826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor wafer and fabrication method of a semiconductor chip
Assignee: SK Hynix Inc
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Filing: 1998-09-17
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Granted: 2000-12-12
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Expires: 2018-09-17
Abstract
Abstract The present invention relates to a semiconductor device, and more particularly to a structure of a semiconductor wafer and a fabrication method of semiconductor chips. According to the present invention, a semiconductor wafer containing a plurality of semiconductor chip portions has a plurality of chip scribe lanes formed between the semiconductor chip portions. A plurality of chip bonding pads are formed on the semiconductor chip portions of the wafer, and a plurality of wafer probing pads are formed on the chip scribe lanes. The wafer probing pads are electrically connected to internal circuits of the semiconductor chip portions and/or to corresponding ones of the chip bonding pads.
Inventors
- 👤 Jae Woon Kim
- 👤 Jong Hoon Park
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:59
CPC Classifications
H; H10; H10W; H10W72/00; H10W72/071; H10P; H10P54/00; H10P74/00; H10P74/27; H10P74/273; H10W20/00; H10W20/40; H10W20/41; H10W20/43; H10W70/00; H10W70/60; H10W72/01; H10W72/019; H10W72/90; H10W72/951; H10W72/981; H10W72/983
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
210 words
A method of fabricating a plurality of semiconductor chips, comprising the sequential steps of: forming a wafer, wherein a plurality of semiconductor chip portions having internal circuits are disposed at regular intervals on the wafer and wherein a plurality of chip scribe lanes are formed between the semiconductor chip portions; forming a first insulating layer on the wafer; removing selected portions of the first insulating layer to expose portions of conductive lines in at least one chip scribe lane, wherein the conductive lines extend from at least one internal circuit of a semiconductor chip portion, the exposed portions of the conductive lines forming wafer probing pads; forming via holes in the first insulating layer to expose a portion of at least one internal circuit of a semiconductor chip portion; forming conductive regions in the via holes; forming a conductive layer that is electrically connected to the conductive regions in the via holes such that the conductive layer extends over a portion of a semiconductor chip portion; forming a second insulating layer on the first insulating layer and on the conductive layer, wherein portions of the conductive layer are exposed to form chip bonding pads; and cutting the wafer along the chip scribe lanes to form a plurality of semiconductor chips.
Claim 2
Independent Claim
210 words
A method of fabricating a plurality of semiconductor chips, comprising the sequential steps of: forming a wafer, wherein a plurality of semiconductor chip portions having internal circuits are disposed at regular intervals on the wafer and wherein a plurality of chip scribe lanes are formed between the semiconductor chip portions; forming a first insulating layer on the wafer; removing selected portions of the first insulating layer to expose portions of conductive lines in at least one chip scribe lane, wherein the conductive lines extend from at least one internal circuit of a semiconductor chip portion, the exposed portions of the conductive lines forming wafer probing pads; forming via holes in the first insulating layer to expose a portion of at least one internal circuit of a semiconductor chip portion; forming conductive regions in the via holes; forming a conductive layer that is electrically connected to the conductive regions in the via holes such that the conductive layer extends over a portion of a semiconductor chip portion; forming a second insulating layer on the first insulating layer and on the conductive layer, wherein portions of the conductive layer are exposed to form chip bonding pads; and cutting the wafer along the chip scribe lanes to form a plurality of semiconductor chips.
Claim 3
Dependent Claim
28 words
The method of claim 1, wherein the step of forming the second insulating layer comprises forming the second insulating layer such that it covers the wafer probing pads.
Claim 4
Dependent Claim
47 words
The method of claim 1, further comprising a step of testing an internal circuit of at least one of the semiconductor chip portions by contacting the wafer probing pads with probe tips, wherein the testing step is conducted before the step of forming via holes is performed.
Claim 5
Dependent Claim
42 words
The method of claim 1, wherein the conductive layer and the second insulating layer are formed such that after the cutting step has been performed, the top outer edges of the semiconductor chips are covered by portions of the second insulating layer.
Claim 6
Independent Claim
190 words
A method of fabricating a plurality of semiconductor chips, comprising the steps of: forming a wafer, wherein a plurality of semiconductor chip portions having internal circuits are disposed at regular intervals on the wafer and wherein a plurality of chip scribe lanes are formed between the semiconductor chip portions; forming a first insulating layer on the wafer; removing selected portions of the first insulating layer to expose portions of conductive lines in at least one chip scribe lane, wherein the conductive lines extend from at least one internal circuit of a semiconductor chip portion, the exposed portions of the conductive lines forming wafer probing pads; forming chip bonding pads on the first insulating layer, the chip bonding pads extending over a portion of a semiconductor chip portion, the chip bonding pads being electrically coupled to at least one internal circuit of the semiconductor chip portion; forming a second insulating layer over the first insulating layer such that the second insulating layer covers the wafer probing pads, and such that the bonding pads remain exposed; and cutting the wafer along the chip scribe lanes to form a plurality of semiconductor chips.
Claim 7
Independent Claim
190 words
A method of fabricating a plurality of semiconductor chips, comprising the steps of: forming a wafer, wherein a plurality of semiconductor chip portions having internal circuits are disposed at regular intervals on the wafer and wherein a plurality of chip scribe lanes are formed between the semiconductor chip portions; forming a first insulating layer on the wafer; removing selected portions of the first insulating layer to expose portions of conductive lines in at least one chip scribe lane, wherein the conductive lines extend from at least one internal circuit of a semiconductor chip portion, the exposed portions of the conductive lines forming wafer probing pads; forming chip bonding pads on the first insulating layer, the chip bonding pads extending over a portion of a semiconductor chip portion, the chip bonding pads being electrically coupled to at least one internal circuit of the semiconductor chip portion; forming a second insulating layer over the first insulating layer such that the second insulating layer covers the wafer probing pads, and such that the bonding pads remain exposed; and cutting the wafer along the chip scribe lanes to form a plurality of semiconductor chips.
Claim 8
Dependent Claim
46 words
The method of claim 5, further comprising the steps of: forming via holes in the first insulating layer; and forming conductive regions in the via holes, wherein the chip bonding pads are formed so that they are electrically coupled to corresponding ones of the conductive regions.
Claim 9
Dependent Claim
35 words
The method of claim 6, wherein the via holes are formed in the first insulating layer to expose portions of conductive lines that extend from at least one internal circuit of a semiconductor chip portion.
Claim 10
Dependent Claim
30 words
The method of claim 6, wherein the via holes are formed in the first insulating layer to expose portions of at least one internal circuit of a semiconductor chip portion.
Claim 11
Dependent Claim
43 words
The method of claim 5, wherein the chip bonding pads and the second insulating layer are formed such that after the cutting step has been performed, the top outer edges of the semiconductor chips are covered by portions of the second insulating layer.
Claim 12
Dependent Claim
47 words
The method of claim 5, further comprising a step of testing an internal circuit of at least one semiconductor chip portion by contacting the wafer probing pads with probe tips, wherein the testing step is performed before the step of forming a second insulating layer is performed.
References Cited (Backward Citations)
US5285082A
Cited
US5239191A
Cited
US5786266A
Cited
US5668062A
Cited
US5982042A
Cited
US5622899A
Cited
US5719449A
Cited
US6022797A
Cited
US5923047A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-12-12 | 2004-06-12 | 2004-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-12-12 | 2008-06-12 | 2008-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-12-12 | 2012-06-12 | 2012-12-12 | $7700.00 | Window Closed / Lapsed |