EP0048839B1 - Flat image screen, process for manufacturing and using the same - Google Patents
Flat image screen, process for manufacturing and using the same Download PDFInfo
- Publication number
- EP0048839B1 EP0048839B1 EP81106915A EP81106915A EP0048839B1 EP 0048839 B1 EP0048839 B1 EP 0048839B1 EP 81106915 A EP81106915 A EP 81106915A EP 81106915 A EP81106915 A EP 81106915A EP 0048839 B1 EP0048839 B1 EP 0048839B1
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- European Patent Office
- Prior art keywords
- pins
- hollow bodies
- screen
- plate
- another
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
- H01J9/26—Sealing together parts of vessels
- H01J9/261—Sealing together parts of vessels the vessel being for a flat panel display
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/82—Mounting, supporting, spacing, or insulating electron-optical or ion-optical arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J31/00—Cathode ray tubes; Electron beam tubes
- H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
- H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
- H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
- H01J31/123—Flat display tubes
- H01J31/125—Flat display tubes provided with control means permitting the electron beam to reach selected parts of the screen, e.g. digital selection
- H01J31/127—Flat display tubes provided with control means permitting the electron beam to reach selected parts of the screen, e.g. digital selection using large area or array sources, i.e. essentially a source for each pixel group
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2201/00—Electrodes common to discharge tubes
- H01J2201/30—Cold cathodes
- H01J2201/308—Semiconductor cathodes, e.g. having PN junction layers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2329/00—Electron emission display panels, e.g. field emission display panels
- H01J2329/86—Vessels
- H01J2329/8625—Spacing members
Definitions
- the invention relates to a flat screen according to the preamble of claim 1 and also includes manufacturing techniques and applications for this tube.
- a display of the type mentioned is described for example in DE-A-2 655 498.
- the distance between the two carrier plates still poses considerable difficulties. Because you have to make sure that the two substrates on the entire display surface adhere exactly to a predetermined distance and look for a construction, with the help of which the plates can withstand the high external pressure without any deformation; the support and spacing elements must be designed in such a way that they do not impair the optical qualities of the panel.
- the invention has for its object to provide a flat screen with a plate spacing that does not give up any special manufacturing or assembly problems, ensures a well-defined substrate spacing, is pressure and high voltage resistant, allows even the finest pixel grid and is also suitable for extremely flat electron beam panels.
- This object is achieved according to the invention by a screen with the features of claim 1.
- the screen according to the invention is characterized in particular by the fact that all the spacers lie correctly with the pixels even without special precautions, are short-circuit proof due to a large creepage distance and, last but not least, can be implemented very simply. It is sufficient to etch the plates using suitable masks or - this is a particularly elegant method - to structure them using a pressing process. In addition, the image quality is usually not noticeably degraded; it remains even under unfavorable heat conditions and / or after longer operating times, since the spacing elements provided according to the invention are thermally ideally adapted to the carrier plates.
- spacer elements with a folded surface profile to improve the high-voltage strength; see. see DE-A-2 615 721.
- the spacer parts do not belong to the carrier plates;
- the pins are passed through openings in one carrier plate and end in cups attached on the outside.
- a picture tube according to the invention is particularly suitable for the display of television pictures and preferably works with electrons which are generated in the rear part of the tube with the aid of a control matrix and are forwarded to an anode coated with phosphorus.
- Cold cathodes or photo cathodes with an externally attached IR control matrix appear to be particularly useful as an electron source, because in these cases the overall construction can be kept very simple, robust, flat and light. Calculations show that with a screen area of 400 mm x 600 mm, a construction depth of less than 10 mm and a weight of less than 3 kg is possible.
- the display shown is provided as a screen of a color television set. Its vacuum envelope consists of two mutually parallel carrier plates (front plate 1, rear plate 2), which are connected to one another via a frame 3.
- the front plate On its rear side, the front plate carries a family of parallel anode strips 4, each of which is covered with a phosphor strip 6. Every third phosphor strip lights up in the same color when bombarded with electrons. (As is well known, colored images can be produced by three primary colors, usually red, green and blue.)
- the anode strips, which have the same color phosphor, are each led to a common connection 7, which passes through the vacuum envelope between the frame and the front plate.
- the back plate contains a control matrix of row conductors 8 and column conductors 9, the column conductors being provided with an opening 11 at the intersection points of the matrix.
- the cathode elements are cold cathodes with heterojunction and negative electron affinity based on GaP-GaAIP.
- the two carrier plates are spaced apart from one another by spacers, the structure of which can best be seen in FIGS. 2 and 3.
- the front plate 1 contains a regular pattern of pin-like projections (pins 13), and the back plate has a corresponding pattern of hollow cylindrical projections (hollow cylinder 14).
- pins 13 pins 13
- hollow cylinder 14 hollow cylindrical projections
- Each pin protrudes into one of the hollow cylinders without touching its side wall and strikes the cylinder bottom. In this way, a relatively long path is created between the control matrix and the anode strips along the spacer surface. You can bring the two plates closer together to about 1 mm if the display is to be operated with a high voltage of several kV. 3 shows how the individual spacing elements are distributed in the control matrix.
- a spacer is assigned to each pixel that is formed from the triple color red / green / blue.
- the cathode elements have a diameter of 0.2 mm
- the phosphor strips have a width of 0.4 mm
- the hollow cylinders have an outer diameter of 0.4 mm and an inner diameter of 0.25 mm
- the supports have a cross section of almost 0 , 2 mm.
- the two carrier plates consist of a few mm thick glass substrates, the frame from an approximately 1 mm thick glass part and the electrodes from the usual metals such as titanium, gold or platinum.
- the substrates have received their protrusions by a hot pressing process, in which a suitably shaped die is pressed onto the initially flat surface of the plate at elevated temperatures.
- Conductors and phosphor layers are manufactured using conventional thin-film techniques.
- the invention is not limited to the illustrated embodiment. There is still considerable scope for design, especially when designing the spacers. For example, instead of round ones, one could also choose rectangular cross-sections and provide the pin-receiving parts with a floor that is not at the level of the remaining plate surface.
- the term "hollow body" is to be interpreted accordingly.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Description
Die Erfindung betrifft einen flachen Bildschirm gemäß dem Oberbegriff des Anspruchs 1 und umfaßt außerdem Fertigungstechniken und Anwendungsmöglichkeiten für diese Röhre. Ein Display der genannten Art wird beispielsweise in der DE-A-2 655 498 beschrieben.The invention relates to a flat screen according to the preamble of claim 1 and also includes manufacturing techniques and applications for this tube. A display of the type mentioned is described for example in DE-A-2 655 498.
In der Praxis bereitet die Distanzierung der beiden Trägerplatten noch immer erhebliche Schwierigkeiten. Denn man muß sicherstellen, daß die beiden Substrate auf der gesamten Anzeigefläche einen vorgegebenen Abstand genau einhalten und dafür eine Konstruktion suchen, mit deren Hilfe die Platten dem hohen Außendruck ohne jede Verformung standhalten können; dabei haben die Stütz- und Distanzierelemente so beschaffen zu sein, daß sie die optischen Qualitäten des Panels nicht beeinträchtigen.In practice, the distance between the two carrier plates still poses considerable difficulties. Because you have to make sure that the two substrates on the entire display surface adhere exactly to a predetermined distance and look for a construction, with the help of which the plates can withstand the high external pressure without any deformation; the support and spacing elements must be designed in such a way that they do not impair the optical qualities of the panel.
In den letzten Jahren sind eine Reihe von Versuchen unternommen worden, die genannten Probleme zu lösen. So hatte man etwa daran gedacht, in dem Raum zwischen den beiden Platten eine Vielzahl von relativ kleinvolumigen Distanzkörpern zu verteilen. Es stellte sich jedoch heraus, daß dieser Weg nur dann erfolgreich ist, wenn man auf die Positionierung der einzelnen Partikel große Sorgfalt verwendet und die Teilchen an Ort und Stelle unter erheblichem Aufwand fixiert (vgl. hierzu neben der eingangs zitierten Offenlegungsschrift, nach der Metallkörper auf Leiterbahnen aufgelegt und mit einer Thermo-Druck-Metallisierung oder dergleichen befestigt werden sollen, auch »IBM Technical Disclosure Bulletin« 19 (1977) 3066 oder 20 (1978) 3496, wonach Glasteilchen in Substratvertiefungen eingebracht bzw. durch eine Verteilerschablone an den vorgesehenen Platz gebracht und durch Aufschmelzen eines Substratüberzuges angeheftet werden).A number of attempts have been made in recent years to solve the problems mentioned. For example, one had thought of distributing a large number of relatively small-volume spacers in the space between the two plates. However, it turned out that this way is only successful if great care is taken in the positioning of the individual particles and the particles are fixed in place with considerable effort (cf., in addition to the published publication cited at the beginning, according to the metal body Printed conductors are to be placed and fastened with a thermo-pressure metallization or the like, also “IBM Technical Disclosure Bulletin” 19 (1977) 3066 or 20 (1978) 3496, after which glass particles are introduced into substrate recesses or brought into place by a distributor template and attached by melting a substrate coating).
Die Plazierungs- und Verankerungsarbeit wird zweifellos geringer, wenn man zu großflächigen Distanziereinheiten, beispielsweise Strukturen mit wabenförmigen oder girlandenartigen Mustern (DE-A-2 750 587) oder regelmäßig gelochten Platten (DE-A-2 855 108), übergeht. Allerdings werden diese Erleichterungen mit einer relativ mühevollen Fertigung erkauft. Denn die Distanzierstrukturen müssen mit Durchbrüchen versehen werden, die unter Umständen ein hochfeines Raster bilden und überdies mit jedem Bildpunkt genau fluchten sollen. Die Anforderungen sind dabei besonders hoch, wenn das Display mit Elektronenstrahlen arbeitet und dementsprechend Kurzschlüsse und/ oder Darstellungsfehler aufgrund von Wandaufladungen zu befürchten sind.The placement and anchoring work is undoubtedly less if one goes over to large-area spacing units, for example structures with honeycomb-shaped or garland-like patterns (DE-A-2 750 587) or regularly perforated plates (DE-A-2 855 108). However, these facilities are bought with a relatively difficult production. Because the spacer structures must be provided with openings, which may form a very fine grid and should also be exactly aligned with each pixel. The requirements are particularly high if the display works with electron beams and accordingly short circuits and / or display errors due to wall charging are to be feared.
Aus der DE-A-2 815 687 ist eine Siebensegmentflüssigkristallanzeige mit den im Anspruch 1 angegebenen Merkmalen a, b und c bekannt, bei der Abstandselemente jeweils aus einem von einem der beiden Trägerplatten ausgehenden Stift bestehen, der mit der Trägerplatte, von der er ausgeht, stoffschlüssig verbunden ist.From DE-A-2 815 687 a seven-segment liquid crystal display with the features a, b and c specified in claim 1 is known, in which spacer elements each consist of a pin emanating from one of the two carrier plates, which pin is connected to the carrier plate from which it originates , cohesively connected.
Der Erfindung liegt die Aufgabe zugrunde, einen Flachbildschirm mit einer Plattendistanzierung anzugeben, die keine besonderen Herstellungs- oder Montageprobleme aufgibt, einen wohldefinierten Substratabstand gewährleistet, druck- und hochspannungsfest ist, auch feinste Bildpunktraster zuläßt und zudem auch für extrem flache Elektronenstrahlpanels geeignet ist. Diese Aufgabe wird erfindungsgemäß durch einen Bildschirm mit den Merkmalen des Patentanspruchs 1 gelöst.The invention has for its object to provide a flat screen with a plate spacing that does not give up any special manufacturing or assembly problems, ensures a well-defined substrate spacing, is pressure and high voltage resistant, allows even the finest pixel grid and is also suitable for extremely flat electron beam panels. This object is achieved according to the invention by a screen with the features of claim 1.
Der erfindungsgemäße Bildschirm zeichnet sich vor allem dadurch aus, daß sämtliche Abstandshalter auch ohne besondere Vorkehrungen richtig zu den Bildpunkten liegen, aufgrund eines großen Kriechweges kurzschlußsicher sind und nicht zuletzt höchst einfach realisiert werden können. So genügt es, die Platten unter Verwendung geeigneter Masken tiefzuätzen oder - dies ist eine besonders elegante Methode - durch einen Preßvorgang zu strukturieren. Darüber hinaus wird die Bildgüte normalerweise nicht merklich verschlechtert; sie bleibt sogar auch noch unter ungünstigen Wärmebedingungen und/oder nach längeren Betriebszeiten erhalten, da die erfindungsgemäß vorgesehenen Distanzierelemente thermisch ideal an die Trägerplatten angepaßt sind.The screen according to the invention is characterized in particular by the fact that all the spacers lie correctly with the pixels even without special precautions, are short-circuit proof due to a large creepage distance and, last but not least, can be implemented very simply. It is sufficient to etch the plates using suitable masks or - this is a particularly elegant method - to structure them using a pressing process. In addition, the image quality is usually not noticeably degraded; it remains even under unfavorable heat conditions and / or after longer operating times, since the spacing elements provided according to the invention are thermally ideally adapted to the carrier plates.
Es ist an sich nicht mehr neu, zur Verbesserung der Hochspannungsfestigkeit Distanzelemente mit einem gefalteten Oberflächenverlauf zu verwenden; vgl. hierzu die DE-A-2 615 721. Dort gehören allerdings die Abstandshalterteile nicht zu den Trägerplatten; überdies sind die Stifte durch Öffnungen in der einen Trägerplatte hindurchgeführt und enden in außen angesetzten Bechern.In itself, it is no longer new to use spacer elements with a folded surface profile to improve the high-voltage strength; see. see DE-A-2 615 721. There, however, the spacer parts do not belong to the carrier plates; In addition, the pins are passed through openings in one carrier plate and end in cups attached on the outside.
Eine erfindungsgemäße Bildröhre eignet sich vor allem zur Darstellung von Fernsehbildern und arbeitet vorzugsweise mit Elektronen, die im hinteren Röhrenteil mit Hilfe einer Steuermatrix erzeugt und nach vorn auf eine mit Phosphor beschichtete Anode geleitet werden. Als Elektronenquelle erscheinen dabei insbesondere Kaltkathoden oder Fotokathoden mit außen angebrachter IR-Steuermatrix sinnvoll, denn in diesen Fällen kann die Gesamtkonstruktion sehr einfach, robust, flach und leicht gehalten werden. Berechnungen zeigen, daß bei einer Schirmfläche von 400 mm x 600 mm ohne weiteres eine Bautiefe unter 10 mm und ein Gewicht von weniger als 3 kg möglich ist.A picture tube according to the invention is particularly suitable for the display of television pictures and preferably works with electrons which are generated in the rear part of the tube with the aid of a control matrix and are forwarded to an anode coated with phosphorus. Cold cathodes or photo cathodes with an externally attached IR control matrix appear to be particularly useful as an electron source, because in these cases the overall construction can be kept very simple, robust, flat and light. Calculations show that with a screen area of 400 mm x 600 mm, a construction depth of less than 10 mm and a weight of less than 3 kg is possible.
Weitere vorteilhafte Ausgestaltungen und Weiterbildungen des Lösungsvorschlags sind Gegenstand zusätzlicher Ansprüche.Further advantageous refinements and developments of the proposed solution are the subject of additional claims.
Die Erfindung soll nun anhand eines besonders bevorzugten Ausführungsbeispiels unter Bezugnahme auf die beigefügte Zeichnung näher erläutert werden. In den Figuren sind einander entsprechende Teile mit gleichen Bezugszeichen versehen.The invention will now be explained in more detail using a particularly preferred embodiment with reference to the accompanying drawings. Corresponding parts are the same in the figures Provide reference numerals.
Es zeigt
- Fig. 1 das Ausführungsbeispiel in einem schematisch gehaltenen Seitenschnitt,
- Fig. 2 eine Einzelheit aus Fig. 1, vergrößert dargestellt, und
- Fig. 3 das Ausführungsbeispiel der Fig. 1 im Schnitt 111-111, teilweise weggebrochen und ohne Kathodenschicht.
- 1 shows the embodiment in a schematic side section,
- Fig. 2 shows a detail of Fig. 1, enlarged, and
- Fig. 3 shows the embodiment of Fig. 1 in section 111-111, partially broken away and without a cathode layer.
Das dargestellte Display ist als Bildschirm eines Farbfernsehgerätes vorgesehen. Seine Vakuumhülle besteht aus zwei zueinander parallelen Trägerplatten (Vorderplatte 1, Rückplatte 2), die über einen Rahmen 3 miteinander verbunden sind.The display shown is provided as a screen of a color television set. Its vacuum envelope consists of two mutually parallel carrier plates (front plate 1, rear plate 2), which are connected to one another via a
Die Vorderplatte trägt auf ihrer Rückseite eine Schar aus zueinander parallelen Anodenstreifen 4, die jeweils mit einem Phosphorstreifen 6 überzogen sind. Jeder dritte Phosphorstreifen leuchtet bei Elektronenbeschuß in der gleichen Farbe auf. (Farbige Bilder lassen sich bekanntlich durch drei Grundfarben, in der Regel rot, grün und blau, erzeugen.) Die Anodenstreifen, die Phosphors gleicher Farbe tragen, sind jeweils auf einen gemeinsamen Anschluß 7 geführt, der die Vakuumhülle zwischen Rahmen und Vorderplatte durchtritt.On its rear side, the front plate carries a family of
Die Rückplatte enthält eine Steuermatrix aus Zeilenleitern 8 und Spaltenleitern 9, wobei die Spaltenleiter in den Kreuzungspunkten der Matrix jeweils mit einer Öffnung 11 versehen sind. Zwischen den beiden Leiterebenen befindet sich eine Kathodenschicht 12, die in jedem der Kreuzungspunkte ein aktives Kathodenelement hat. Die Kathodenelemente sind im vorliegenden Fall Kaltkathoden mit Heteroübergang und negativer Elektronenaffinität auf der Basis GaP-GaAIP.The back plate contains a control matrix of row conductors 8 and
Die beiden Trägerplatten werden durch Abstandshalter voneinander distanziert, deren Aufbau am besten in den Fig. 2 und 3 zu erkennen ist. Die Vorderplatte 1 enthält ein regelmäßiges Muster aus stiftartigen Vorsprüngen (Stifte 13), und die Rückplatte hat ein entsprechendes Muster aus hohlzylinderförmigen Vorsprüngen (Hohlzylinder 14). Jeder Stift ragt in einen der Hohlzylinder hinein, ohne dessen Seitenwand zu berühren, und schlägt am Zylinderboden an. Auf diese Weise entsteht zwischen der Steuermatrix und den Anodenstreifen längs der Abstandshalteroberfläche ein relativ langer Pfad. Man kann die beiden Platten bis auf etwa 1 mm einander nähern, wenn das Display mit einer Hochspannung von mehreren kV betrieben werden soll. Fig. 3 zeigt wie die einzelnen Distanzierelemente in der Steuermatrix verteilt sind. Jedem Bildpunkt, der aus dem Farbentripel rot/grün/blau gebildet wird, ist ein Abstandshalter zugeordnet. In einem typischen Beispiel haben die Kathodenelemente einen Durchmesser von 0,2 mm, die Phosphorstreifen eine Breite von 0,4 mm, die Hohlzylinder einen Außendurchmesser von 0,4 mm und einen Innendurchmesser von 0,25 mm und die Stützen einen Querschnitt von knapp 0,2 mm.The two carrier plates are spaced apart from one another by spacers, the structure of which can best be seen in FIGS. 2 and 3. The front plate 1 contains a regular pattern of pin-like projections (pins 13), and the back plate has a corresponding pattern of hollow cylindrical projections (hollow cylinder 14). Each pin protrudes into one of the hollow cylinders without touching its side wall and strikes the cylinder bottom. In this way, a relatively long path is created between the control matrix and the anode strips along the spacer surface. You can bring the two plates closer together to about 1 mm if the display is to be operated with a high voltage of several kV. 3 shows how the individual spacing elements are distributed in the control matrix. A spacer is assigned to each pixel that is formed from the triple color red / green / blue. In a typical example, the cathode elements have a diameter of 0.2 mm, the phosphor strips have a width of 0.4 mm, the hollow cylinders have an outer diameter of 0.4 mm and an inner diameter of 0.25 mm, and the supports have a cross section of almost 0 , 2 mm.
In einzelnen Fällen kann es zu spürbaren Wandaufladungen an den Distanzelementen kommen - etwa dann, wenn man den Stiften und/oder Hohlzylindern relativ große Querabmessungen gibt. Hier empfiehlt es sich, die den Elektronenstrahlen zugewandten Stift- bzw. Hohlzylinderoberflächen mit einem schwach leitenden Überzug, etwa einer Lithiumverbindung in wäßriger Lösung, zu beschichten.In individual cases, there may be noticeable wall charges on the spacer elements - for example, if the pins and / or hollow cylinders are given relatively large transverse dimensions. Here it is advisable to coat the pin or hollow cylinder surfaces facing the electron beams with a weakly conductive coating, such as a lithium compound in aqueous solution.
Das Display arbeitet folgendermaßen:
- Die einzelnen Zeilenleiter werden zeitlich nacheinander abgetastet, und während eine Zeile eingeschaltet ist, erhalten die Spalten nacheinander die drei Farbauszüge der Zeileninformation und zugleich die jeweils zugehörigen Anodenstreifen ein Hochspannungssignal.
- The individual row conductors are scanned one after the other in time, and while a row is switched on, the columns receive the three color separations of the row information in succession and at the same time the associated anode strips a high-voltage signal.
Im vorliegenden Fall bestehen die beiden Trägerplatten aus wenigen mm starken Glassubstraten, der Rahmen aus einem ca. 1 mm dicken Glasteil und die Elektroden aus den dafür üblichen Metallen wie Titan, Gold oder Platin. Die Substrate haben ihre Vorsprünge durch einen Warmpreßprozeß erhalten, bei dem man eine geeignet geformte Matrize unter erhöhten Temperaturen auf die zunächst noch ebene Plattenoberfläche drückt. Leiter und Phosphorschichten sind in üblichen Dünnschichttechniken hergestellt.In the present case, the two carrier plates consist of a few mm thick glass substrates, the frame from an approximately 1 mm thick glass part and the electrodes from the usual metals such as titanium, gold or platinum. The substrates have received their protrusions by a hot pressing process, in which a suitably shaped die is pressed onto the initially flat surface of the plate at elevated temperatures. Conductors and phosphor layers are manufactured using conventional thin-film techniques.
Die Erfindung beschränkt sich nicht auf das dargestellte Ausführungsbeispiel. So besteht vor allem bei der Gestaltung der Abstandshalter noch ein erheblicher Gestaltungsspielraum. Beispielsweise könnte man statt runder auch rechteckige Querschnitte wählen und die stiftaufnehmenden Teile mit einem Boden versehen, der nicht auf dem Niveau der restlichen Plattenoberfläche liegt. Dementsprechend weit ist der verwendete Begriff »Hohlkörper« auszulegen.The invention is not limited to the illustrated embodiment. There is still considerable scope for design, especially when designing the spacers. For example, instead of round ones, one could also choose rectangular cross-sections and provide the pin-receiving parts with a floor that is not at the level of the remaining plate surface. The term "hollow body" is to be interpreted accordingly.
Claims (7)
characterised in that the spacing elements are constructed as follows:
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19803036671 DE3036671A1 (en) | 1980-09-29 | 1980-09-29 | FLAT SCREEN, METHOD FOR ITS PRODUCTION AND USE |
DE3036671 | 1980-09-29 |
Publications (2)
Publication Number | Publication Date |
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EP0048839A1 EP0048839A1 (en) | 1982-04-07 |
EP0048839B1 true EP0048839B1 (en) | 1984-02-22 |
Family
ID=6113117
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP81106915A Expired EP0048839B1 (en) | 1980-09-29 | 1981-09-03 | Flat image screen, process for manufacturing and using the same |
Country Status (4)
Country | Link |
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US (1) | US4451759A (en) |
EP (1) | EP0048839B1 (en) |
JP (1) | JPS5788656A (en) |
DE (2) | DE3036671A1 (en) |
Families Citing this family (64)
Publication number | Priority date | Publication date | Assignee | Title |
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DE3202447A1 (en) * | 1982-01-26 | 1983-07-28 | Siemens AG, 1000 Berlin und 8000 München | Electrodeposition and etching process for patterning plates having insulating ring zones in the mouth region of bores |
JPH0129709Y2 (en) * | 1981-06-15 | 1989-09-11 | ||
US5675212A (en) * | 1992-04-10 | 1997-10-07 | Candescent Technologies Corporation | Spacer structures for use in flat panel displays and methods for forming same |
DE3339696A1 (en) * | 1983-11-03 | 1984-04-12 | Klaus Dipl.-Ing.(FH) 4150 Krefeld Sundergeld | Image reproduction device having a flat screen |
JPS62147635A (en) * | 1985-12-20 | 1987-07-01 | Matsushita Electric Ind Co Ltd | Display device |
US5015912A (en) * | 1986-07-30 | 1991-05-14 | Sri International | Matrix-addressed flat panel display |
US4857799A (en) * | 1986-07-30 | 1989-08-15 | Sri International | Matrix-addressed flat panel display |
US5063327A (en) * | 1988-07-06 | 1991-11-05 | Coloray Display Corporation | Field emission cathode based flat panel display having polyimide spacers |
US4923421A (en) * | 1988-07-06 | 1990-05-08 | Innovative Display Development Partners | Method for providing polyimide spacers in a field emission panel display |
US5126620A (en) * | 1988-12-19 | 1992-06-30 | Mitsubishi Denki Kabushiki Kaisha | Display element |
NL9100122A (en) * | 1991-01-25 | 1992-08-17 | Philips Nv | DISPLAY DEVICE. |
CA2073923C (en) * | 1991-07-17 | 2000-07-11 | Hidetoshi Suzuki | Image-forming device |
US5247133A (en) * | 1991-08-29 | 1993-09-21 | Motorola, Inc. | High-vacuum substrate enclosure |
US5205770A (en) * | 1992-03-12 | 1993-04-27 | Micron Technology, Inc. | Method to form high aspect ratio supports (spacers) for field emission display using micro-saw technology |
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-
1980
- 1980-09-29 DE DE19803036671 patent/DE3036671A1/en not_active Withdrawn
-
1981
- 1981-09-03 DE DE8181106915T patent/DE3162382D1/en not_active Expired
- 1981-09-03 EP EP81106915A patent/EP0048839B1/en not_active Expired
- 1981-09-28 US US06/306,158 patent/US4451759A/en not_active Expired - Fee Related
- 1981-09-28 JP JP56153534A patent/JPS5788656A/en active Pending
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DE3162382D1 (en) | 1984-03-29 |
DE3036671A1 (en) | 1982-05-13 |
US4451759A (en) | 1984-05-29 |
JPS5788656A (en) | 1982-06-02 |
EP0048839A1 (en) | 1982-04-07 |
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