Patent US5369281A successfully refreshed from Google Patents.
US5369281A
Expired / Lapsed
US
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Matrix screen, particularly a large screen, and a method of manufacturing it
Assignee: Thales Electron Devices SA
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Filing: 1993-02-12
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Granted: 1994-11-29
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Expires: 2013-02-12
Abstract
Abstract The invention is applicable to matrix detector or display screens formed by assembling several elementary screens. A matrix screen according to the invention comprises several elementary screens (E1 to E4) spliced together on one of their edges (10, 11). According to the invention, each elementary screen (E1 to E4) includes a mechanical stop device (B1 to B4) which mates with a mechanical stop device on an elementary screen to which it is spliced so that the two elementary screens are positioned relative to each other. This arrangement avoids long and difficult alignment and indexing during the assembly of the elementary screens (E1 to E4) since these operations are completed when the elementary screens are cut, this operation itself requiring the use of accurate alignment and indexing tools.
Inventors
- 👤 Vincent Spinnler
- 👤 Marc Arques
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:37
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/12; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/13336; H04N5/00; H04N5/30; H04N5/32
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
134 words
A method for manufacturing a large size matrix screen comprising the steps of forming at least two large size elementary screens each having lateral dimensions of more than ten centimeters and each carrying a respective bidimensional matrix of active elements on a respective non-crystalline substrate, said method further comprising the step of cutting at least one side of each elementary screen by means of an excimer laser, said cutting operation forming a mechanical stop on said one side at an edge of the screen, the mechanical stop thus formed matching with a corresponding mechanical stop similarly formed on a side of an adjacent elementary screen to position the adjacent elementary screens relative to each other, and abutting said adjacent elementary screens side to side, with said mechanical stops of adjacent screens in corresponding abutment.
Claim 2
Independent Claim
134 words
A method for manufacturing a large size matrix screen comprising the steps of forming at least two large size elementary screens each having lateral dimensions of more than ten centimeters and each carrying a respective bidimensional matrix of active elements on a respective non-crystalline substrate, said method further comprising the step of cutting at least one side of each elementary screen by means of an excimer laser, said cutting operation forming a mechanical stop on said one side at an edge of the screen, the mechanical stop thus formed matching with a corresponding mechanical stop similarly formed on a side of an adjacent elementary screen to position the adjacent elementary screens relative to each other, and abutting said adjacent elementary screens side to side, with said mechanical stops of adjacent screens in corresponding abutment.
Claim 3
Dependent Claim
16 words
A method according to claim 1, wherein the large size matrix screen is a photosensitive screen.
Claim 4
Dependent Claim
18 words
A method according to claim 1, wherein the large size matrix screen is an X-ray radiation detecting screen.
Claim 5
Dependent Claim
16 words
A method according to claim 1, wherein the large size matrix screen is a display screen.
Claim 6
Dependent Claim
15 words
A method according to claim 1, wherein the mechanical stop device has a sawtooth shape.
Claim 7
Dependent Claim
14 words
A method according to claim 1, wherein the mechanical stop has a notch shape.
Claim 8
Dependent Claim
14 words
A method according to claim 1, wherein the mechanical stop has a circular shape.
Claim 9
Independent Claim
182 words
A method for manufacturing a large size matrix screen comprising the steps of forming at least two large size elementary screens each having lateral dimensions of more than ten centimeters and each carrying a respective bidimensional matrix of active elements on a respective non-crystalline substrate, said matrix surrounded by a peripheral edge derived from active elements, said method comprising the step of cutting each elementary screen by means of an excimer laser along at least one side of the screen in the immediate vicinity of the respective matrix of active elements, so as to remove a lateral portion of substrate derived of active elements on said one side of the screen, and during this cutting operation forming a mechanical stop on the edge of the screen outside the matrix of active elements, the mechanical stop thus formed matching with a corresponding mechanical stop similarly formed on one side of an adjacent elementary screen to position the adjacent elementary screens relative to each other, and abutting said adjacent elementary screens side to side, with said mechanical stops of adjacent screens in corresponding abutment.
Claim 10
Independent Claim
182 words
A method for manufacturing a large size matrix screen comprising the steps of forming at least two large size elementary screens each having lateral dimensions of more than ten centimeters and each carrying a respective bidimensional matrix of active elements on a respective non-crystalline substrate, said matrix surrounded by a peripheral edge derived from active elements, said method comprising the step of cutting each elementary screen by means of an excimer laser along at least one side of the screen in the immediate vicinity of the respective matrix of active elements, so as to remove a lateral portion of substrate derived of active elements on said one side of the screen, and during this cutting operation forming a mechanical stop on the edge of the screen outside the matrix of active elements, the mechanical stop thus formed matching with a corresponding mechanical stop similarly formed on one side of an adjacent elementary screen to position the adjacent elementary screens relative to each other, and abutting said adjacent elementary screens side to side, with said mechanical stops of adjacent screens in corresponding abutment.
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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) | 1997-11-28 | 1998-05-30 | 1998-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-11-28 | 2002-05-30 | 2002-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-11-28 | 2006-05-30 | 2006-11-29 | $7700.00 | Window Closed / Lapsed |