US3847697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Article transfer method
Assignee: AT&T Inc
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Filing: 1972-10-30
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Granted: 1974-11-12
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Expires: 1992-10-30
Abstract
Abstract An array of articles, for example, semiconductor chips, is transferred from a wax-coated sapphire disc to a glass disc by bonding the array to a support, melting the wax to release the array from the sapphire disc, substituting the glass disc for the sapphire disc, clamping the glass disc to the support and releasing the bond between the articles and the support. A substance, such as eicosane, is then introduced in its liquid phase to the clamped combination of the glass disc, the array of articles and the support. Upon hardening, the substance bonds the articles to the glass disc and the support. The support is then unclamped. By liquefying a layer of the substance adjacent to the support, the bond between the support and the array is weakened. The support is then removed without disturbing the array of articles being held to the glass disc by another, still hard layer of the substance.
Inventors
- 👤 C Baker
- 👤 R Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:21
CPC Classifications
H; H10; H10P; H10P72/00; Y; Y10; Y10S; Y10S428/00; Y10S428/914
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
151 words
A method of handling an array of articles, comprising: forming a bond between the array and a support to secure the array to such first support; clamping a second support to the side of the first support having the array bonded thereto to hold the array between the supports; dissolving the bond between the array and the first support while continuing to clamp the array between the supports; introducing a liquid substance interstitially between the supports; hardening the substance to bond the array to the supports and to fix the positions of the articles within the array with respect to each other in such substance; unclamping the supports; and liquefying a portion of the substance adjacent the first support to release the first support from the array while maintaining another portion of the substance adjacent the second support in its hardened condition to retain the array bonded to the second support.
Claim 2
Independent Claim
151 words
A method of handling an array of articles, comprising: forming a bond between the array and a support to secure the array to such first support; clamping a second support to the side of the first support having the array bonded thereto to hold the array between the supports; dissolving the bond between the array and the first support while continuing to clamp the array between the supports; introducing a liquid substance interstitially between the supports; hardening the substance to bond the array to the supports and to fix the positions of the articles within the array with respect to each other in such substance; unclamping the supports; and liquefying a portion of the substance adjacent the first support to release the first support from the array while maintaining another portion of the substance adjacent the second support in its hardened condition to retain the array bonded to the second support.
Claim 3
Dependent Claim
121 words
A method according to claim 1, wherein the array is initially bonded to one side of a third support, and the exposed side of the array is contacted by the side of the first support, the method further comprising: dissolving the bond between the third support and the array after the bond between the first support and the array has been formed; laterally sliding the third support out of contact with the array to expose the array bonded to the first support; and removing a bonding agent of the dissolved bond between the third support and the array after the sliding of the third support out of contact with the array and before clamping the second support to the first support.
Claim 4
Dependent Claim
54 words
A method according to claim 1, wherein the liquefied substance is hardened by cooling it and wherein liquefying a portion of the substance comprises applying heat to the substance in contact with the first support to melt the portion of the substance adjacent the first support to release the first support from the array.
Claim 5
Dependent Claim
52 words
A method according to claim 3, wherein unclamping the supports comprises: applying a force to the second support to urge the second support away from the first support, whereupon liquefaction of a portion of the substance adjacent the first support forces the first support away from the array and the second support.
Claim 6
Dependent Claim
21 words
A method according to claim 4, wherein the applied force is a gravitational force including the weight of the sEcond support.
Claim 7
Dependent Claim
196 words
In a method of transferring an array of articles from a first support to a second support, including the steps of contacting the array with an intermediate support, forming a bond between the articles of the array and the intermediate support, and substituting the second support for the first support while holding the array by the bond to the intermediate support, an improvement comprising: urging the second support toward the intermediate support and against the array to frictionally clamp the articles in position between the second and intermediate supports; dissolving the bond between the articles and the intermediate support; introducing a molten substance between the second and the intermediate supports, the substance substantially engulfing the articles of the array; solidifying the substance to bond the articles to the second and to the intermediate supports; releasing the urging force against the second support; and liquefying a portion of the substance adjacent the intermediate support to dissolve the bond holding the intermediate support to the array and the second support and to release the intermediate support from the array while maintaining the array bonded to the second support by another portion of the substance adjacent the second support.
Claim 8
Dependent Claim
196 words
In a method of transferring an array of articles from a first support to a second support, including the steps of contacting the array with an intermediate support, forming a bond between the articles of the array and the intermediate support, and substituting the second support for the first support while holding the array by the bond to the intermediate support, an improvement comprising: urging the second support toward the intermediate support and against the array to frictionally clamp the articles in position between the second and intermediate supports; dissolving the bond between the articles and the intermediate support; introducing a molten substance between the second and the intermediate supports, the substance substantially engulfing the articles of the array; solidifying the substance to bond the articles to the second and to the intermediate supports; releasing the urging force against the second support; and liquefying a portion of the substance adjacent the intermediate support to dissolve the bond holding the intermediate support to the array and the second support and to release the intermediate support from the array while maintaining the array bonded to the second support by another portion of the substance adjacent the second support.
Claim 9
Independent Claim
250 words
A method of transferring an array of articles from a first support to a second support, including the steps of contacting the array with an intermediate support, forming a bond between the articles of the array and the intermediate support, and substituting the second support for the first support while holding the articles bonded to the intermediate support, wherein an improvement comprises: urging the second support toward the intermediate support and into frictional contact with the articles to clamp the articles in position between the intermediate support and the second support; dissolving the bond between the articles and the intermediate support; introducing a molten substance through apertures in the intermediate support to fill spaces between the intermediate and second supports and substantially engulf the articles of the array; solidifying the substance to bond the articles to the second and to the intermediate supports and the supports to each other; after the substance has been solidified, urging the second support away from the intermediate support; applying heat to the intermediate support and to the substance in contact therewith to melt a portion of the substance adjacent to the intermediate support to cause the intermediate support to release the articles and the second support; and withdrawing the second support and the array of articles bonded thereto by the remaining portion of the substance from the intermediate support, whereby the application of heat to the remaining portion of the substance is terminated and the array of articles remains bonded to the second support.
Claim 10
Independent Claim
250 words
A method of transferring an array of articles from a first support to a second support, including the steps of contacting the array with an intermediate support, forming a bond between the articles of the array and the intermediate support, and substituting the second support for the first support while holding the articles bonded to the intermediate support, wherein an improvement comprises: urging the second support toward the intermediate support and into frictional contact with the articles to clamp the articles in position between the intermediate support and the second support; dissolving the bond between the articles and the intermediate support; introducing a molten substance through apertures in the intermediate support to fill spaces between the intermediate and second supports and substantially engulf the articles of the array; solidifying the substance to bond the articles to the second and to the intermediate supports and the supports to each other; after the substance has been solidified, urging the second support away from the intermediate support; applying heat to the intermediate support and to the substance in contact therewith to melt a portion of the substance adjacent to the intermediate support to cause the intermediate support to release the articles and the second support; and withdrawing the second support and the array of articles bonded thereto by the remaining portion of the substance from the intermediate support, whereby the application of heat to the remaining portion of the substance is terminated and the array of articles remains bonded to the second support.
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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) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |