Patent US2523786A successfully refreshed from Google Patents.
EP0002000B1
Expired / Lapsed
EP
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Gas discharge display device using spacing elements and method for making a spacing element structure and such a display device
Assignee: Siemens AG
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Filing: 1978-10-30
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Granted: 1981-01-07
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Expires: 1998-10-30
Abstract
No abstract record available.
Inventors
- 👤 Werner Veith
- 👤 Christian Stein
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 17:49
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/02; C03B23/023; C03B23/03; H; H01; H01J; H01J17/00; H01J17/38; H01J17/48; H01J17/49; H01J17/498; H01J9/00; H01J9/24; H01J9/26; H01J9/261; H01J2217/00; H01J2217/38; H01J2217/49; H01J2217/492; H01J2217/49264; H01J2217/49271
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
230 words
Gas-discharge indicating device containing a gas-filled, gastight sheath which has a front plate, a back plate and a plate-shaped control structure which divides the interior of the sheath into two chambers and which on its two sides bears electrode paths which can each be separately controlled and which form row- and column-conductors of a matrix and which is perforated in the intersections of the matrix together with these paths, and which in the one sheath chamber (gas-discharge chamber) has at least one plasma electrode, preferably at least one surface electrode running parallel to the control structure, and which has at least one acceleration anode in the other chamber (acceleration chamber), wherein the plasma electrode is arranged in such manner that a gas discharge can burn in the gas-discharge chamber whereas the acceleration anode is held opposite the facing electrode paths of the control structure (control electrodes) and spaced by spacing elements at a distance which is so small that even a voltage of a few kV cannot trigger a gas discharge, characterised in that the spacing elements consist of crosspieces which have an essentially constant wall thickness and extend in the plane of the control structure (1) and are directed past the perforations (control electrode openings 12) of the control structure (1) and in sections alternately run essentially parallel and at an angle to the extent of the control electrodes.
Claim 2
Dependent Claim
230 words
Gas-discharge indicating device containing a gas-filled, gastight sheath which has a front plate, a back plate and a plate-shaped control structure which divides the interior of the sheath into two chambers and which on its two sides bears electrode paths which can each be separately controlled and which form row- and column-conductors of a matrix and which is perforated in the intersections of the matrix together with these paths, and which in the one sheath chamber (gas-discharge chamber) has at least one plasma electrode, preferably at least one surface electrode running parallel to the control structure, and which has at least one acceleration anode in the other chamber (acceleration chamber), wherein the plasma electrode is arranged in such manner that a gas discharge can burn in the gas-discharge chamber whereas the acceleration anode is held opposite the facing electrode paths of the control structure (control electrodes) and spaced by spacing elements at a distance which is so small that even a voltage of a few kV cannot trigger a gas discharge, characterised in that the spacing elements consist of crosspieces which have an essentially constant wall thickness and extend in the plane of the control structure (1) and are directed past the perforations (control electrode openings 12) of the control structure (1) and in sections alternately run essentially parallel and at an angle to the extent of the control electrodes.
Claim 3
Dependent Claim
46 words
Device as claimed in claim 1, characterised in that a plurality of crosspieces are fastened to form a spacing structure (24,26) which contains a number of openings each of which border one or more control structure perforations and are separated from one another by the crosspieces.
Claim 4
Dependent Claim
21 words
Device as claimed in claim 2, characterised in that the openings of the spacing structure are rectangular (honeycombed spacing structure 24).
Claim 5
Dependent Claim
36 words
Device as claimed in claim 2, characterised in that the spacing structure consists of two serpentine crosspieces which are positioned relative to one another in mirror-image fashion (garland structure 26 provided with alternating bulges and contractions).
Claim 6
Dependent Claim
21 words
Device as claimed in one of the claims 1 to 4, characterised in that the crosspieces consist of ceramic or glass.
Claim 7
Dependent Claim
38 words
Device as claimed in one of the claims 1 to 5, characterised in that the individual crosspieces or spacing structures (24, 26) have a wall thickness no greater than 200 p,m, for example no greater than 150 gm.
Claim 8
Dependent Claim
60 words
Device as claimed in one of the claims 1 to 6, characterised in that the crosspieces, in particular the surfaces of the crosspieces, are electrically conductive in such manner that charging of the crosspieces which is possibly produced by an electron beam entering into the acceleration chamber (16) has faded away by the next possible recurrence of the electron beam.
Claim 9
Dependent Claim
56 words
Device as claimed in one of the claims 1 to 7, provided with supporting elements between the control structure and the back plate, characterised in that the supporting elements are constructed as support plates (17) and extend within planes which are parallel to one another and to which the row conductors (11) are at right angles.
Claim 10
Dependent Claim
43 words
Device as claimed in one of the claims 1 to 8, characterised in that on the side facing towards the control structure (1) the front plate and/or back plate (7,4) each contains grooves into which the crosspieces and/or support plates (17) are inserted.
Claim 11
Dependent Claim
40 words
Device as claimed in one of the claims 1 to 9, characterised in that the crosspieces and/or support plates (17) are fastened to the front plate (7) and the back plate (4) for example by means of a glass solder.
Claim 12
Dependent Claim
48 words
Device as claimed in one of the claims 8 to 10, characterised in that at the back plate end the support plates (17) are connected to one another by means of longitudinal projections which run parallel to the row conductors (11) and originate from the back plate (4).
Claim 13
Dependent Claim
38 words
Device as claimed in one of the claims 8 to 10, characterised in that at the back plate end the support plates (17) are each accommodated in a longitudinal strut (19) which originates from the back plate (4).
Claim 14
Dependent Claim
44 words
Device as claimed in claim 12, characterised in that transverse struts (21) which equally form an integral part of the back plate (4) and are preferably spaced from the adjacent transverse or longitudinal struts (21 or 19) each originate from the longitudinal struts (19).
Claim 15
Dependent Claim
41 words
Device as claimed in one of the claims 1 to 13, characterised in that on the external side the back plate (4) is provided with a frame consisting of longitudinal and transverse ribs (22 and 23) which originate from the plate.
Claim 16
Dependent Claim
49 words
Process for the production of a device as claimed in claim 4 provided with glass crosspieces, characterised in that suitably dimensioned glass tapes are passed through in the deformable state between two toothed wheels and then connected to one another to form the garland structure by application of heat.
References Cited (Backward Citations)
No citation records indexed.
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