US4821945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single lead automatic clamping and bonding system
Assignee: International Business Machines Corp
•
Filing: 1987-07-01
•
Granted: 1989-04-18
•
Expires: 2007-07-01
Abstract
Abstract A system of single lead clamping and bonding in the assembly of integrated circuit devices. A capillary bonder has a clamp member rotatably mounted around the capillary for movement with the bond head. The clamp is moveable vertically to contact and clamp a terminal to be bonded. The clamp is rotatable to orient itself with respect to the terminal and the fine wire. The capillary and clamp move under computer control to make a series of bonds, typically between lead frame fingers and terminals on a semiconductor device.
Inventors
- 👤 Judith A. Chase
- 👤 Douglas W. Phelps, Jr.
- 👤 Robert J. Redmond
- 👤 Stephen G. Starr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:41
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/002; B23K20/004; B23K20/005; H; H10; H10W; H10W72/00; H10W72/071; H10W72/0711; H10W72/07141; H10W72/07183; H10W72/075; H10W72/07531; H10W72/07532; H10W72/07533; H10W90/00; H10W90/701; H10W90/751; H10W90/756
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
75 words
Apparatus for bonding a fine wire lead to a terminal comprising an assembly of; a bonder having a capillary for dispensing a fine wire and bonding it to a terminal, and a selectively rotated clamp mounted around said capillary bonder, said clamp having leg portion means for clamping said terminal, said clamp movable vertically with respect to said capillary and selectively rotatable around said capillary bonder to position said leg portion means on said terminal.
Claim 2
Dependent Claim
75 words
Apparatus for bonding a fine wire lead to a terminal comprising an assembly of; a bonder having a capillary for dispensing a fine wire and bonding it to a terminal, and a selectively rotated clamp mounted around said capillary bonder, said clamp having leg portion means for clamping said terminal, said clamp movable vertically with respect to said capillary and selectively rotatable around said capillary bonder to position said leg portion means on said terminal.
Claim 3
Dependent Claim
25 words
The apparatus of claim 1, further comprising means to move said capillary and said clamp from a first bonding location to a second bonding location.
Claim 4
Dependent Claim
12 words
The apparatus of claim 1, wherein said bonder comprises an ultrasonic bonder.
Claim 5
Dependent Claim
12 words
The apparatus of claim 1, wherein said bonder comprises a thermosonic bonder.
Claim 6
Dependent Claim
13 words
The apparatus of claim 1, wherein said bonder comprises a thermal compression bonder.
Claim 7
Dependent Claim
38 words
The apparatus of claim 1, further comprising a plurality of capillary bonder and clamp assemblies, said assemblies positioned at one or more work stations at spaced locations to simultaneously bond fine wire leads to terminals at spaced locations.
Claim 8
Independent Claim
68 words
A method of bonding a fine wire to a terminal comprising the steps of: positioning a single lead clamp over a region where a wire bond is to be made, lowering said single lead clamp to clamp a terminal, lowering a capillary of wire bonder adjacent to said single lead clamp and completing said wire bond to said terminal, raising said capillary and then said single lead clamp.
Claim 9
Independent Claim
68 words
A method of bonding a fine wire to a terminal comprising the steps of: positioning a single lead clamp over a region where a wire bond is to be made, lowering said single lead clamp to clamp a terminal, lowering a capillary of wire bonder adjacent to said single lead clamp and completing said wire bond to said terminal, raising said capillary and then said single lead clamp.
Claim 10
Dependent Claim
23 words
The method of claim 7, comprising the step of orienting, by rotating, said single lead clamp prior to lowering it onto said terminal.
Claim 11
Dependent Claim
28 words
The method of claim 7, wherein said step of lowering said single lead clamp comprises the step of lowering said single lead clamp at a programmable, monitored velocity.
Claim 12
Dependent Claim
30 words
The method of claim 7, further comprising the steps of moving said single lead clamp and capillary to a second bonding site, lowering said capillary and completing a second bond.
Claim 13
Dependent Claim
46 words
The method of claim 7, further comprising the steps of, moving said single lead clamp and capillary to a second bonding site, lowering said single lead clamp to engage another terminal and lowering said capillary adjacent to said single clamping lead and completing a second bond.
Claim 14
Dependent Claim
55 words
The method of claim 10, wherein the step of moving said single lead clamp and capillary comprises the steps of storing locations where bonds are to be made with respect to a group of terminals, and directing sequential movement of said single lead clamp and capillary to bonding sites in accordance with said stored locations.
Claim 15
Dependent Claim
41 words
The method of claim 11, further comprising the steps of moving said single lead clamp and capillary to a third bonding site, completing a bond at said third bonding site wherein said first, second and third bonds comprise a stitch bond.
Claim 16
Dependent Claim
24 words
The method of claim 7, further comprising the steps of programming and monitoring the clamping force of said single lead clamp on a terminal.
Claim 17
Dependent Claim
24 words
The method of claim 7, further comprising the steps of programming and monitoring the distance between the capillary and the terminal to be bonded.
References Cited (Backward Citations)
US3596044A
Cited
US3672556A
Cited
US3894671A
Cited
US3806019A
Cited
US3863827A
Cited
US4053096A
Cited
US4142714A
Cited
US4213556A
Cited
US4202482A
Cited
US4485957A
Cited
US4527730A
Cited
US4437604A
Cited
US4475681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-04-17 | 1992-10-17 | 1993-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-17 | 1996-10-17 | 1997-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-17 | 2000-10-17 | 2001-04-18 | $7700.00 | Window Closed / Lapsed |