Patent US5592056A successfully refreshed from Google Patents.
US5592056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical protection of an anode of a flat display screen
Assignee: Pixtech SA
•
Filing: 1995-09-27
•
Granted: 1997-01-07
•
Expires: 2015-09-27
Abstract
Abstract An anode for flat display screens, of the type including at least one set of phosphor strips disposed over corresponding conductive strips and at least one interconnection conductor for the phosphor strips. Each conductive strip of each set is connected through a resistor to the associated interconnection conductor.
Inventors
- 👤 Jean-Francois Peyre
- 👤 Francis Courreges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:25
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/02; H01J17/04; H01J17/12; H01J29/00; H01J29/02; H01J29/10; G; G09; G09G; G09G3/00; G09G3/20; G09G3/22; H01J29/96; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/123
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
64 words
An anode for a flat display screen, of the type including at least one set (r, g, b) of phosphor strips (7) disposed over corresponding conductive strips (9) and at least one interconnection conductor (21) for said phosphor strips, wherein said conductive strips (9) of said set are interconnected through resistors (22) disposed in series between the conductive strips and the associated interconnection conductor.
Claim 2
Dependent Claim
64 words
An anode for a flat display screen, of the type including at least one set (r, g, b) of phosphor strips (7) disposed over corresponding conductive strips (9) and at least one interconnection conductor (21) for said phosphor strips, wherein said conductive strips (9) of said set are interconnected through resistors (22) disposed in series between the conductive strips and the associated interconnection conductor.
Claim 3
Dependent Claim
22 words
The anode of claim 1, wherein each conductive strip (9) is individually connected to said interconnection conductor (21) through a resistor (22).
Claim 4
Dependent Claim
22 words
The anode of claim 1, wherein a single resistor (22) is associated with a plurality of conductive strips (9) of said set.
Claim 5
Dependent Claim
75 words
The anode of claim 1, wherein the resistors are serigraphied thick-film resistive portions (22) formed over an insulation layer (23) deposited at least over one track (21) constituting said interconnection conductor, said insulation layer (23) being locally etched away (25; 24) in front of the extremities of each resistive portion to allow the electrical connection of said extremities, respectively to an extremity of at least one conductive strip (9) and to the interconnection track (21).
Claim 6
Dependent Claim
36 words
The anode of claim 4, wherein the insulation layer (23) extends over the whole surface of the anode and is etched away, in the useful surface of the screen, in front of each conductive strip (9).
Claim 7
Dependent Claim
21 words
The anode of claim 4, wherein all the resistive portions (22) associated with said interconnection track (21) have the same length.
Claim 8
Dependent Claim
38 words
The anode of claim 1, including three sets (r, g, b) of alternate phosphor strips (9r, 9g, 9b), each corresponding to a color, and at least three conductors (21r, 21g, 21b) interconnecting the strips of a same color.
Claim 9
Dependent Claim
42 words
The anode of claim 7, wherein all the resistive portions (22r, 22g, 22b) associated with a same interconnection track (21r, 21g, 21b) have the same length and extend from an extremity of a conductive strip (9r, 9g, 9b) to the associated track.
Claim 10
Dependent Claim
31 words
The anode of claim 7, wherein all the interconnection tracks (21r, 21g, 21b) are parallel and on the same side of the anode, perpendicularly to the conductive strips (9r, 9g, 9b).
Claim 11
Dependent Claim
30 words
The anode of claim 8, wherein at least two interconnection tracks (21r, 21g, 21b), perpendicular to the conductive strips (9r, 9g, 9b), are on opposite sides of said conductive strips.
References Cited (Backward Citations)
US4940916A
Cited
US4940916B1
Cited
US5225820A
Cited
US5231387A
Cited
US5534744A
Cited
US5283500A
Cited
US5528102A
Cited
US5491376A
Cited
US5525857A
Cited
US5536993A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-01-07 | 2000-07-08 | 2001-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-01-07 | 2004-07-08 | 2005-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-01-07 | 2008-07-08 | 2009-01-07 | $7700.00 | Window Closed / Lapsed |