US4480150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lead frame and method
Assignee: Motorola Solutions Inc
•
Filing: 1982-07-12
•
Granted: 1984-10-30
•
Expires: 2002-07-12
Abstract
Abstract A lead frame and method in which an adhesive tape strip such as Mylar is rolled or pressed along the undersurface of the lead frame to contact the lead frame and bonding pad undersurfaces. Upon removal of the tags retaining the individual circuit elements to the lead frame, the parts are maintained in their existing orientation and position by the tape strip in conjunction with the lead frame. The circuit elements may then be handled as a unit by means of the lead frame/tape strip combination in subsequent testing, marking, lead bending or other handling operations.
Inventors
- 👤 Raymond N. Jones
- 👤 John M. Lawson
- 👤 O'Dell F. Keil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:26
CPC Classifications
H; H10; H10W; H10W70/00; H10W70/40; H10P; H10P72/00; H10P72/70; H10P72/74; H10W70/411; H10P72/7416; H10P72/7418; H10W72/00; H10W72/01; H10W72/0198; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49121; Y10T29/4981
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
54 words
A lead frame comprising: at least one runner presenting parallel opposite upper and lower faces thereof; a plurality of bonding pads detachably affixed to said runner, said bonding pads presenting opposite upper and lower surfaces thereof; and a tape strip adhesively and removably secured to said runner lower face and bonding pad lower surfaces.
Claim 2
Dependent Claim
54 words
A lead frame comprising: at least one runner presenting parallel opposite upper and lower faces thereof; a plurality of bonding pads detachably affixed to said runner, said bonding pads presenting opposite upper and lower surfaces thereof; and a tape strip adhesively and removably secured to said runner lower face and bonding pad lower surfaces.
Claim 3
Dependent Claim
21 words
The lead frame of claim 1 wherein said lead frame further comprises a die bonded to said bonding pad upper surfaces.
Claim 4
Dependent Claim
15 words
The lead frame of claim 1 wherein said tape strip comprises a polyethylene terephthalate tape.
Claim 5
Independent Claim
69 words
A method for handling a plurality of components comprising the steps of: providing a lead frame having at least one runner presenting parallel opposite upper and lower faces thereof; detachably furnishing a plurality of bonding pads pre-affixed to said runner, said bonding pads presenting opposite upper and lower surfaces thereof; and adhesively and removably securing a tape strip to said runner lower face and said bonding pad lower surfaces.
Claim 6
Independent Claim
69 words
A method for handling a plurality of components comprising the steps of: providing a lead frame having at least one runner presenting parallel opposite upper and lower faces thereof; detachably furnishing a plurality of bonding pads pre-affixed to said runner, said bonding pads presenting opposite upper and lower surfaces thereof; and adhesively and removably securing a tape strip to said runner lower face and said bonding pad lower surfaces.
Claim 7
Dependent Claim
22 words
The method of claim 4 wherein said step of adhesively and removably securing is carried out by means of an adhesive tape.
Claim 8
Dependent Claim
22 words
The method of claim 5 wherein said step of adhesively and removably securing is carried out by means of polyethylene terephthalate tape.
Claim 9
Dependent Claim
115 words
A lead frame comprising: first and second parallel and spaced-apart runners having a plurality of generally perpendicularly disposed tie bars therebetween, said tie bars being in a generally parallel and spaced apart relationship and said runners presenting parallel opposite upper and lower faces thereof; a plurality of bonding pads detachably affixed to said runners and disposed interstitially between said tie bars, said bonding pads presenting opposite upper and lower surfaces thereof; and a tape strip extending longitudinally between said runners and adhesively and removably secured to said runner lower faces and said bonding pad lower surfaces; whereby said bonding pads may remain adhesively and removably secured to said tape strip after detachment from said runners.
Claim 10
Dependent Claim
115 words
A lead frame comprising: first and second parallel and spaced-apart runners having a plurality of generally perpendicularly disposed tie bars therebetween, said tie bars being in a generally parallel and spaced apart relationship and said runners presenting parallel opposite upper and lower faces thereof; a plurality of bonding pads detachably affixed to said runners and disposed interstitially between said tie bars, said bonding pads presenting opposite upper and lower surfaces thereof; and a tape strip extending longitudinally between said runners and adhesively and removably secured to said runner lower faces and said bonding pad lower surfaces; whereby said bonding pads may remain adhesively and removably secured to said tape strip after detachment from said runners.
Claim 11
Dependent Claim
18 words
The lead frame of claim 7 wherein said lead frame comprises a die bonded to said bonding pad.
Claim 12
Dependent Claim
14 words
The lead frame of claim 7 wherein said tape strip comprises an adhesive tape.
Claim 13
Dependent Claim
15 words
The lead frame of claim 9 wherein said adhesive tape comprises a polyethylene terephthalate tape.
Claim 14
Independent Claim
129 words
A method for handling a plurality of components comprising the steps of: providing a lead frame having first and second parallel and spaced-apart runners with a plurality of generally perpendicularly disposed tie bars therebetween in a generally parallel and spaced apart relationship, said lead frame presenting parallel opposite upper and lower faces thereof; interstitially disposing bonding pads between said tie bars, said bonding pads being detachably affixed to said lead frame and presenting opposite upper and lower surfaces thereof; and longitudinally extending a tape strip along said lead frame, said tape strip being adhesively and removably secured to said lead frame lower face and said bonding pad lower surface; whereby said bonding pads may remain adhesively and removably secured to said tape strip after detachment from said lead frame.
Claim 15
Independent Claim
129 words
A method for handling a plurality of components comprising the steps of: providing a lead frame having first and second parallel and spaced-apart runners with a plurality of generally perpendicularly disposed tie bars therebetween in a generally parallel and spaced apart relationship, said lead frame presenting parallel opposite upper and lower faces thereof; interstitially disposing bonding pads between said tie bars, said bonding pads being detachably affixed to said lead frame and presenting opposite upper and lower surfaces thereof; and longitudinally extending a tape strip along said lead frame, said tape strip being adhesively and removably secured to said lead frame lower face and said bonding pad lower surface; whereby said bonding pads may remain adhesively and removably secured to said tape strip after detachment from said lead frame.
Claim 16
Dependent Claim
20 words
The method of claim 11 wherein said step of longitudinally extending is carried out by means of an adhesive tape.
Claim 17
Dependent Claim
20 words
The method of claim 12 wherein said step of longitudinally extending is carried out by means of polyethylene terephthalate tape.
References Cited (Backward Citations)
US3426423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-30 | 1988-04-30 | 1988-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-30 | 1992-04-30 | 1992-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-30 | 1996-04-30 | 1996-10-30 | $7700.00 | Window Closed / Lapsed |