US5737043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid crystal display panel holding metal fixture
Assignee: NEC Corp
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Filing: 1996-04-25
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Granted: 1998-04-07
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Expires: 2016-04-25
Abstract
Abstract A liquid crystal display panel holding metal fixture that prohibits the flow of solder through a gap at its corner portion when it is soldered to a printed circuit board. The liquid crystal display panel holding metal fixture has bottom and side surfaces that are formed by bending a metal plate cut into a predetermined shape. The bottom surface has corner portions where the cut surfaces of the metal plate are close to each other. The metal plate is plated to impart solder wettability thereto when the metal plate is made of a material having poor solder wettability, and is thereafter cut into the predetermined shape to expose the poor wettability material at the cut portions that prohibit the flow of solder through the gap. Alternatively, the metal plate is made of a material having good solder wettability, and the cut surfaces are subjected to a surface treatment for reducing solder wettability.
Inventors
- 👤 Kei Takaya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:09
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/34; H05K3/341; B; B23; B23K; B23K33/00; H05K2201/00; H05K2201/10; H05K2201/10007; H05K2201/10128; H05K2201/10136; H05K2201/10613; H05K2201/10954; H05K2201/10969; H05K2201/20; H05K2201/2081; H05K3/301; Y; Y02; Y02P; Y02P70/00; Y02P70/50; Y10; Y10S; Y10S29/00; Y10S29/012; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
114 words
A liquid crystal display panel holding metal fixture which is for holding a liquid crystal display panel and which is to be soldered to a printed circuit board, said liquid crystal display panel holding metal fixture having bottom and side surfaces that are formed by bending a metal plate cut into a predetermined shape, said bottom surface having a corner portion where cut surfaces of said metal plate that form said side surfaces are close to each other, wherein said metal plate comprising a material having poor solder wettability and plating thereon for imparting solder wettability to said metal plate, and wherein the material having poor solder wettability is exposed at said cut surfaces.
Claim 2
Dependent Claim
114 words
A liquid crystal display panel holding metal fixture which is for holding a liquid crystal display panel and which is to be soldered to a printed circuit board, said liquid crystal display panel holding metal fixture having bottom and side surfaces that are formed by bending a metal plate cut into a predetermined shape, said bottom surface having a corner portion where cut surfaces of said metal plate that form said side surfaces are close to each other, wherein said metal plate comprising a material having poor solder wettability and plating thereon for imparting solder wettability to said metal plate, and wherein the material having poor solder wettability is exposed at said cut surfaces.
Claim 3
Dependent Claim
25 words
A liquid crystal display panel holding metal fixture according to claim 1, wherein said metal plate comprises a stainless steel plate with silver plating thereon.
Claim 4
Independent Claim
57 words
A method of manufacturing a liquid crystal display panel holding metal fixture, comprising the steps of: plating a metal plate made of a material having poor solder wettability to impart solder wettability thereto; cutting said plated metal plate into a predetermined shape; and forming bottom and side surfaces by bending predetermined sides of said cut metal plate.
Claim 5
Independent Claim
57 words
A method of manufacturing a liquid crystal display panel holding metal fixture, comprising the steps of: plating a metal plate made of a material having poor solder wettability to impart solder wettability thereto; cutting said plated metal plate into a predetermined shape; and forming bottom and side surfaces by bending predetermined sides of said cut metal plate.
Claim 6
Dependent Claim
102 words
A liquid crystal display panel holding metal fixture which holds a liquid crystal display panel and which is to be soldered to a printed circuit board, said liquid crystal display panel holding metal fixture having bottom and side surfaces that are formed by bending a metal plate cut into a predetermined shape, said bottom surface having a corner portion where cut surfaces of said metal plate that form said side surfaces are close to each other, wherein said metal plate is made of a material having good solder wettabillty, and said cut surfaces are subjected to surface treatment for hampering solder wettability.
Claim 7
Dependent Claim
102 words
A liquid crystal display panel holding metal fixture which holds a liquid crystal display panel and which is to be soldered to a printed circuit board, said liquid crystal display panel holding metal fixture having bottom and side surfaces that are formed by bending a metal plate cut into a predetermined shape, said bottom surface having a corner portion where cut surfaces of said metal plate that form said side surfaces are close to each other, wherein said metal plate is made of a material having good solder wettabillty, and said cut surfaces are subjected to surface treatment for hampering solder wettability.
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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) | 2001-04-06 | 2001-10-06 | 2002-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-04-06 | 2005-10-06 | 2006-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-04-06 | 2009-10-06 | 2010-04-07 | $7700.00 | Window Closed / Lapsed |