EP0258831A2 - Structure associated with cathode ray tubes for monitors, television sets or the like - Google Patents

Structure associated with cathode ray tubes for monitors, television sets or the like Download PDF

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Publication number
EP0258831A2
EP0258831A2 EP87112513A EP87112513A EP0258831A2 EP 0258831 A2 EP0258831 A2 EP 0258831A2 EP 87112513 A EP87112513 A EP 87112513A EP 87112513 A EP87112513 A EP 87112513A EP 0258831 A2 EP0258831 A2 EP 0258831A2
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EP
European Patent Office
Prior art keywords
glass
absorption coating
glass pane
chromium
gray
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Granted
Application number
EP87112513A
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German (de)
French (fr)
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EP0258831B1 (en
EP0258831A3 (en
Inventor
Dieter Müller
Wilhelm Rein
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Flabeg GmbH and Co KG
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Flachglas Wernberg GmbH
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Application filed by Flachglas Wernberg GmbH filed Critical Flachglas Wernberg GmbH
Priority to AT87112513T priority Critical patent/ATE75357T1/en
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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
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H01J29/89—Optical or photographic arrangements structurally combined or co-operating with the vessel
    • H01J29/898—Spectral filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/89—Optical components associated with the vessel
    • H01J2229/8913—Anti-reflection, anti-glare, viewing angle and contrast improving treatments or devices
    • H01J2229/8916—Anti-reflection, anti-glare, viewing angle and contrast improving treatments or devices inside the vessel

Definitions

  • the invention relates generically to an attachment for the cathode ray tube of monitors, television sets and the like, - consisting of a glass pane, in particular a gray glass pane, a front-side anti-reflection equipment and a rear-side absorption coating, the absorption coating having metal atoms.
  • the front anti-reflective equipment is largely arbitrary. You can e.g. B. as a multi-layer coating of substances such as Al2O3, Ta2O5, SiO2, SnO2, TiO2, CeF3, ZrO2, MgF2, z. B. two-layer or three-layer, alternating high refractive index or low refractive index.
  • glass pane includes those made of inorganic glass, in particular tempered safety glass, and made of plastic.
  • Such attachment units are used in front of the so-called fluorescent screen of the cathode ray tube, which is also referred to as a display device in particular in monitors, and are combined with it.
  • the absorption coating has two layers. It consists of a metal layer, which can be constructed from, among other things, chrome or a chrome alloy, but does not necessarily consist of these materials, and a dielectric layer.
  • the metal layer has a complex refractive index in which the quotient of the imaginary part and the real part is in the range between 0.7 to 3.0.
  • the dielectric layer has a refractive index in the range of 1.35 to 1.70.
  • the invention has for its object to improve the contrast effect and bring about a further reduction in reflection in a front unit of the construction described, with sufficient corrosion resistance.
  • the teaching of the invention leads to surprising effects: If the absorption layer made of the substances mentioned has a thickness that reduces the light transmission compared to the uncoated glass pane (regardless of the original light transmittance) by not less than the contrast effect, but also that Anti-reflective coating improved.
  • the anti-reflective coating is fundamentally determined by the fact that anti-reflection equipment is provided on the front, the anti-reflective coating which is achieved by combination with the absorption coating according to the invention is more effective and color-neutral. Any ultraviolet rays that occur are attenuated. Also disturbances, which in the known embodiment relate to static charging based on the absorption coating, do not occur.
  • the conductive absorption coating on the rear side in addition to an anti-reflective coating in the visible spectral range, also achieves a noticeable reduction in light transmission, so that a considerably improved attenuation of the light reflections occurring on the non-anti-reflective image surface is achieved. Due to the proposed coating material and the selected layer thickness, the rear absorption coating acts as a color-neutral anti-reflective coating in the visible spectral range with sufficient conductivity to dissipate electrostatic charges by grounding the absorption coating. This prevents contamination of the screen surface caused by electrostatic charging and the associated reduction in image sharpness. Another advantage is the protection of electronic components from the static shock.
  • the glass pane of the attachment unit according to the invention is also sufficiently corrosion-resistant under the usual environmental influences.
  • the rear glass surface was then coated in a magnetron sputtering system with an absorption coating made of Cr, so that the light transmission was reduced to 40% and a conductivity was established which could be assigned to a sheet resistance of 1 kilohm. Then the transmittance and the reflectance were measured again.
  • FIG. 1 shows the transmittance (%)
  • FIG. 2 shows the reflectance (%), in each case over the wavelength.
  • the solid curves show the measured values of the glass pane provided only with the anti-reflection coating
  • the dashed curves represent the measured values of the glass pane additionally provided with the absorption coating. The improvement achieved is evident. In addition, there was a considerable improvement in the contrast effect.

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Surface Treatment Of Optical Elements (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Details Of Television Scanning (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

Front attachment unit for the cathode ray tube of monitors, television sets or the like, consisting of a sheet of glass, in particular a sheet of gray glass, anti-reflection equipment on the front side and an absorption coating on the rear side, whereby the absorption coating has metallic atoms. The absorption coating is single-layer and made of chromium, a chromium/nickel alloy or silicides. It is anti-statically adjusted and grounded. It is of a thickness which reduces the light transmission compared with a non-coated sheet of glass by approximately a third.

Description

Die Erfindung bezieht sich gattungsgemäß auf ein Vorsatzaggre­gat für die Kathodenstrahlröhre von Monitoren, Fernsehappara­ten und dergleichen, - bestehend aus einer Glasscheibe, insbe­sondere einer Grauglasscheibe, einer vorderseitigen Antire­flexionsausrüstung und einer rückseitigen Absorptionsbeschich­tung, wobei die Absorptionsbeschichtung Metallatome aufweist. Die vorderseitige Antireflexionsausrüstung ist weitgehend be­liebig. Sie kann z. B. als mehrschichtige Auflage aus Sub­stanzen wie Al₂O₃, Ta₂O₅, SiO₂, SnO₂, TiO₂, CeF₃, ZrO₂, MgF₂ ausgeführt sein, z. B. zweischichtig oder dreischichtig, in ab­wechselnder Folge hochbrechend oder niedrigbrechend. Sie kann aber auch, insbesondere bei gebogenen Glasscheiben, als vor­derseitige Feinätzung der Glasoberfläche ausgeführt sein. - Der Begriff Glasscheibe umfaßt solche aus anorganischem Glas, ins­besondere aus gehärtetem Sicherheitsglas, und aus Kunststoff. Derartige Vorsatzaggregate werden vor dem sogenannten Leucht­schirm der Kathodenstrahlröhre, der insbesondere bei Monitoren auch als Anzeigevorrichtung bezeichnet wird, eingesetzt und mit diesem vereinigt.The invention relates generically to an attachment for the cathode ray tube of monitors, television sets and the like, - consisting of a glass pane, in particular a gray glass pane, a front-side anti-reflection equipment and a rear-side absorption coating, the absorption coating having metal atoms. The front anti-reflective equipment is largely arbitrary. You can e.g. B. as a multi-layer coating of substances such as Al₂O₃, Ta₂O₅, SiO₂, SnO₂, TiO₂, CeF₃, ZrO₂, MgF₂, z. B. two-layer or three-layer, alternating high refractive index or low refractive index. However, it can also be designed as a front-side fine etching of the glass surface, in particular in the case of curved glass panes. - The term glass pane includes those made of inorganic glass, in particular tempered safety glass, and made of plastic. Such attachment units are used in front of the so-called fluorescent screen of the cathode ray tube, which is also referred to as a display device in particular in monitors, and are combined with it.

Bei dem bekannten gattungsgemäßen Vorsatzaggregat (EP 00 18 667) ist die Absorptionsbeschichtung zweischichtig. Sie besteht aus einer Metallschicht, die unter anderem aus Chrom oder aus einer Chromlegierung aufgebaut sein kann, aber nicht zwingend aus diesen Werkstoffen besteht, und aus einer dielektrischen Schicht. Die Metallschicht besitzt einen komplexen Brechungsindex, bei dem der Quotient aus dem Imaginärteil und dem Realteil im Be­reich zwischen 0,7 bis 3,0 liegt. Die dielektrische Schicht hat einen Brechungsindex im Bereich von 1,35 bis 1,70. Durch diese zweischichtige Absorptionsbeschichtung soll die sogenannten Licht­hofbildung unterdrückt, d. h. der Kontrast verbessert werden. Insoweit ist es bekannt (DE 23 30 898), daß eine in der be­schriebenen Weise angeordnete Absorptionsbeschichtung kontrast­steigernd wirken kann. Bei der bekannten gattungsgemäßen Aus­führungsform bleiben jedoch die Kontrastwirkung und Reflexions minderung verbesserungsfähig.In the known generic attachment (EP 00 18 667), the absorption coating has two layers. It consists of a metal layer, which can be constructed from, among other things, chrome or a chrome alloy, but does not necessarily consist of these materials, and a dielectric layer. The metal layer has a complex refractive index in which the quotient of the imaginary part and the real part is in the range between 0.7 to 3.0. The dielectric layer has a refractive index in the range of 1.35 to 1.70. Through this two-layer absorption coating is intended to suppress so-called halation, ie to improve the contrast. To this extent, it is known (DE 23 30 898) that an absorption coating arranged in the manner described can have a contrast-increasing effect. In the known generic embodiment, however, the contrast effect and reflection reduction can be improved.

Der Erfindung liegt die Aufgabe zugrunde, bei einem Vorsatz­aggregat des beschriebenen Aufbaus die Kontrastwirkung zu verbessern sowie eine weitere Reflexionsminderung herbeizufüh­ren, und zwar bei ausreichender Korrosionsbeständigkeit.The invention has for its object to improve the contrast effect and bring about a further reduction in reflection in a front unit of the construction described, with sufficient corrosion resistance.

Zur Lösung dieser Aufgabe lehrt die Erfindung, daß die Absorp­tionsbeschichtung einschichtig aus Chrom, einer Chrom/Nickel-­Legierung oder Siliciden aufgebaut und antistatisch eingeric htet und geerdet sowie mit einer Dicke versehen ist, welche die Lichttransmission gegenüber der unbeschichteten Glasscheibe um etwa ein Drittel absenkt. Grundsätzlich sind dabei alle Über­gangsmetallsilicide einsetzbar, insbesondere Chrom- und Chrom-­Nickel-Silicide. Bevorzugt wird mit Chrom oder mit einer Legie­rung gearbeitet, die hauptsächlich aus 20. Gew.-% Chrom und 80 Gew.-% Nickel aufgebaut ist. Werden die Absorptionsschichten im Wege der Magnetron-Kathodenzerstäubung aufgebracht, so sind sie besonders kratzfest, was die Korrosionsbeständigkeit unterstützt. Zu besonders günstigen Ergebnissen kommt man, wenn die beschriebene Einrichtung der Absorptionsbeschichtung mit besonderen Antireflexionsausrüstungen kombiniert wird, nämlich Antireflexionsausrüstungen aus den drei Schichten

  • 1. Al₂O₃ Brechungsindex n = 1.63, optische Dicke n *d = λ/4
  • 2. Ta₂O₅ Brechungsindex n = 2.1, optische Dicke n = *d λ/2
  • 3. MgF₂ Brechungsindex n = 1.38, optische Dicke n *d = λ/4
oder aus den drei Schichten
  • 1. CaF₃ Brechungsindex n = 1.64, optische Dicke n *d = λ/4
  • 2. ZrO₂ Brechungsindex n = 2.05, optische Dicke n *d = λ/2
  • 3. MgF₂ Brechungsindex n = 1.38, optische Dicke n *d = λ/4
besteht, wobei die erste Schicht stets auf der Glasscheibe an­geordnet ist. Man kann aber auch mit einem Zweischichtensystem arbeiten, beispielsweise mit dem System
  • 1. SnO₂ Brechungsindex n = 2.0, optische Dicke n *d = 2 λ/23
  • 2. SiO₂ Brechungsindex n = 1.5, optische Dicke n *d = 3λ /10
To achieve this object, the invention teaches that the absorption coating is composed of a single layer of chromium, a chromium / nickel alloy or silicides and is antistatically set up and grounded and provided with a thickness which lowers the light transmission compared to the uncoated glass pane by about a third. In principle, all transition metal silicides can be used, in particular chromium and chromium-nickel silicides. It is preferred to work with chromium or with an alloy which is mainly composed of 20% by weight of chromium and 80% by weight of nickel. If the absorption layers are applied by means of magnetron sputtering, they are particularly scratch-resistant, which supports the corrosion resistance. Particularly favorable results are obtained if the described device for the absorption coating is combined with special anti-reflection equipment, namely anti-reflection equipment from the three layers
  • 1. Al₂O₃ refractive index n = 1.63, optical thickness n * d = λ / 4
  • 2. Ta₂O₅ refractive index n = 2.1, optical thickness n = * d λ / 2
  • 3. MgF₂ refractive index n = 1.38, optical thickness n * d = λ / 4
or from the three layers
  • 1. CaF₃ refractive index n = 1.64, optical thickness n * d = λ / 4
  • 2. ZrO₂ refractive index n = 2.05, optical thickness n * d = λ / 2
  • 3. MgF₂ refractive index n = 1.38, optical thickness n * d = λ / 4
exists, the first layer being always arranged on the glass pane. But you can also work with a two-layer system, for example with the system
  • 1. SnO₂ refractive index n = 2.0, optical thickness n * d = 2 λ / 23
  • 2. SiO₂ refractive index n = 1.5, optical thickness n * d = 3λ / 10

Die Lehre der Erfindung führt zu überraschenden Effekten: Wenn die Absorptionsschicht aus den genannten Substanzen eine Dicke aufweist, welche die Lichttransmission gegenüber der unbe­schichteten Glasscheibe (unabhängig vom ursprünglichen Licht­transmissionsgrad) um etwa ein Drittel absenkt, so wird nicht nur die Kontrastwirkung, sondern gleichzeitig auch die Entspie­gelung verbessert. Zwar ist die Entspiegelung grundsätzlich dadurch bestimmt, daß eine vorderseitige Antireflexionsausrüstung vorgesehen ist, die Entspiegelung, die durch Kombination mit der erfindungsgemäßen Absorptionsbeschichtung erreicht wird, ist jedoch wirksamer und farbneuträler. Eventuell auftretende ultraviolette Strahlen werden gedämpft. Auch Störungen, die bei der bekannten Ausführungsform auf statischer Aufladung der Absorptionsbeschichtung beruhen, treten nicht auf. Wo mit einer Monitorlupe gearbeitet wird, ist eine gute Abstimmung zwischen der Monitorlupe und dem Vorsatzaggregat möglich. Durch die rückseitige, leitfähige Absorptionsbeschichtung wird neben einer Entspiegelung im sichtbaren Spektralbereich zugleich eine merkliche Absenkung der Lichttransmission erreicht, so daß eine erheblich verbesserte Dämpfung der an der nicht entspie­gelten Bildoberfläche auftretenden Lichtreflexe erzielt wird. Die rückseitige Absorptionsbeschichtung wirkt aufgrund des vorge­schlagenen Beschichtungsmaterials und der gewählten Schicht­dicke als farbneutrale Entspiegelung im sichtbaren Spektralbe­reich mit zugleich hinreichender Leitfähigkeit, um elektrosta­tische Aufladungen mit Hilfe einer Erdung der Absorptionsbe­schichtung abzuleiten. Die durch elektrostatische Aufladung be­dingte Verschmutzung der Bildschirmoberfläche und die damit zusammenhängende Verminderung der Bildschärfe werden dadurch verhindert. Ein weiterer Vorteil ist der Schutz elektronischer Bauteile vor dem Statik-Schock. Die Glasscheibe des erfindungs­gemäßen Vorsatzaggregates ist bei den üblichen Umwelteinflüssen auch ausreichend korrosionsbeständig.The teaching of the invention leads to surprising effects: If the absorption layer made of the substances mentioned has a thickness that reduces the light transmission compared to the uncoated glass pane (regardless of the original light transmittance) by not less than the contrast effect, but also that Anti-reflective coating improved. Although the anti-reflective coating is fundamentally determined by the fact that anti-reflection equipment is provided on the front, the anti-reflective coating which is achieved by combination with the absorption coating according to the invention is more effective and color-neutral. Any ultraviolet rays that occur are attenuated. Also disturbances, which in the known embodiment relate to static charging based on the absorption coating, do not occur. Wherever a monitor magnifier is used, a good coordination between the monitor magnifier and the front attachment is possible. The conductive absorption coating on the rear side, in addition to an anti-reflective coating in the visible spectral range, also achieves a noticeable reduction in light transmission, so that a considerably improved attenuation of the light reflections occurring on the non-anti-reflective image surface is achieved. Due to the proposed coating material and the selected layer thickness, the rear absorption coating acts as a color-neutral anti-reflective coating in the visible spectral range with sufficient conductivity to dissipate electrostatic charges by grounding the absorption coating. This prevents contamination of the screen surface caused by electrostatic charging and the associated reduction in image sharpness. Another advantage is the protection of electronic components from the static shock. The glass pane of the attachment unit according to the invention is also sufficiently corrosion-resistant under the usual environmental influences.

Zur Optimierung tragen die Merkmale des Anspruches 2 bei. Im Rahmen der Erfindung kann mit handelsüblichen Glasarten ge­arbeitet werden. Bevorzugte Ausführungsformen sind Gegenstand der Ansprüche 3 bis 5.The features of claim 2 contribute to the optimization. Within the scope of the invention, commercially available types of glass can be used. Preferred embodiments are the subject of claims 3 to 5.

Ausführungsbeispiel:Design example:

Auf eine Grauglasscheibe mit 3 mm Dicke und 60 % Lichtdurch­lässigkeit wurde zunächst in einer Hochvacuum Bedampfungs­ anlage eine Antireflexionsbeschichtung, bestehend aus einer λ/4-­Schicht Al₂O₃ mit dem Brechungsindex n = 1.63, einer λ/2-Schicht Ta₂O₅ mit dem Brechungsindex n = 2.1 und schließlich mit einer λ/4-Schicht MgF₂ mit dem Brechungsindex n = 1.38 aufgedampft. Dann wurden der Transmissionsgrad sowie der Reflexionsgrad gemessen. Anschließend wurde die rückseitige Glasfläche in einer Magnetron-Kathodenzerstäubungsanlage mit einer Absorptionsbe­schichtung aus Cr beschichtet, so daß die Lichtdurchlässigkeit auf 40 % abgesenkt wurde und sich eine Leitfähigkeit einstellte, die einem Flächenwiderstand von 1 Kiloohm zugeordnet werden konnte. Danach wurden wiederum der Transmissionsgrad und der Reflexionsgrad gemessen.Evaporation was first carried out in a high vacuum on a gray glass pane with a thickness of 3 mm and 60% light transmission plant an anti-reflective coating consisting of a λ / 4 layer of Al₂O₃ with the refractive index n = 1.63, a λ / 2 layer of Ta₂O₅ with the refractive index n = 2.1 and finally with a λ / 4 layer of MgF₂ with the refractive index n = 1.38 . Then the transmittance and the reflectance were measured. The rear glass surface was then coated in a magnetron sputtering system with an absorption coating made of Cr, so that the light transmission was reduced to 40% and a conductivity was established which could be assigned to a sheet resistance of 1 kilohm. Then the transmittance and the reflectance were measured again.

Die Fig. 1 zeigt den Transmissionsgrad (%), die Fig. 2 den Reflexionsgrad (%), jeweils über der Wellenlänge. Die ausge­zogenen Kurven geben die Meßwerte der nur mit der Antireflexions­beschichtung versehenen Glasscheibe wieder, die gestrichelten Kurven die Meßwerte der zusätzlich mit der Absorptionsbe­schichtung versehenen Glasscheibe. Die erreichte Verbesserung ist augenscheinlich. Außerdem stellte sich eine beachtliche Ver­besserung der Kontrastwirkung ein.1 shows the transmittance (%), FIG. 2 shows the reflectance (%), in each case over the wavelength. The solid curves show the measured values of the glass pane provided only with the anti-reflection coating, the dashed curves represent the measured values of the glass pane additionally provided with the absorption coating. The improvement achieved is evident. In addition, there was a considerable improvement in the contrast effect.

Claims (5)

1. Vorsatzaggregat für die Kathodenstrahlröhr von Monitoren, Fernsehapparaten und dergleichen, - bestehend aus
einer Glasscheibe, insbesondere einer Grauglasscheibe,
einer vorderseitigen Antireflexionsausrüstung und
einer rückseitigen Absorptionsbeschichtung,
wobei die Absorptionsbeschichtung Metallatome aufweist, da­durch gekennzeichnet, daß die Absorptions­beschichtung einschichtig aus Chrom, einer Chrom/Nickel-Legie­rung oder Siliciden aufgebaut und antistatisch eingerichtet und geerdet sowie mit einer Dicke versehen ist, welche die Licht­transmission gegenüber der unbeschichteten Glasscheibe um etwa ein Drittel absenkt.1. Attachment unit for the cathode ray tube of monitors, TV sets and the like, - consisting of
a glass pane, in particular a gray glass pane,
front anti-reflection equipment and
a rear absorption coating,
wherein the absorption coating has metal atoms, characterized in that the absorption coating is composed of a single layer of chromium, a chromium / nickel alloy or silicides and is antistatically designed and grounded and provided with a thickness which lowers the light transmission compared to the uncoated glass pane by about a third. 2. Vorsatzaggregat nach Anspruch 1, dadurch gekennzeichnet, daß die Absorptionsbeschichtung einen Flächenwiderstand von 0,5 bis 20 Kiloohm, vorzugsweise von etwa 1 Kiloohm, aufweist.2. Attachment unit according to claim 1, characterized in that the absorption coating has a surface resistance of 0.5 to 20 kilohms, preferably of about 1 kilohm. 3. Vorsatzaggregat nach einem der Ansprüche 1 oder 2, gekenn­zeichnet durch die Verwendung einer Glasscheibe aus klarem Floatglas oder aus grauem Floatglas.3. Attachment unit according to one of claims 1 or 2, characterized by the use of a glass pane made of clear float glass or gray float glass. 4. Vorsatzaggregat nach Anspruch 3, dadurch gekennzeichnet, daß die Absorptionsbeschichtung eine Dicke aufweist, die die Lichttransmission auf etwa 60 % bei klarem Floatglas und auf etwa 40 % bei grauem Floatglas absenkt.4. attachment according to claim 3, characterized in that the absorption coating has a thickness which lowers the light transmission to about 60% with clear float glass and to about 40% with gray float glass. 5. Vorsatzaggregat nach einem der Ansprüche 1 oder 2, gekenn­zeichnet durch die Verwendung einer Glasscheibe aus Maschinen­grauglas und durch eine Dicke der Absorptionsschicht, die die Lichttransmission auf etwa 21 % absenkt.5. attachment according to one of claims 1 or 2, characterized by the use of a glass pane made of machine gray glass and by a thickness of the absorption layer, which reduces the light transmission to about 21%.
EP87112513A 1986-09-03 1987-08-28 Structure associated with cathode ray tubes for monitors, television sets or the like Expired - Lifetime EP0258831B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87112513T ATE75357T1 (en) 1986-09-03 1987-08-28 ATTACHMENT UNIT FOR THE CATHODE RAY TUBE OF MONITORS, TELEVISION SETS AND THE LIKE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3629996 1986-09-03
DE19863629996 DE3629996A1 (en) 1986-09-03 1986-09-03 ATTACHMENT UNIT FOR THE CATHODE RAY TUBES OF MONITORS, TELEVISION DEVICES AND THE LIKE

Publications (3)

Publication Number Publication Date
EP0258831A2 true EP0258831A2 (en) 1988-03-09
EP0258831A3 EP0258831A3 (en) 1988-12-28
EP0258831B1 EP0258831B1 (en) 1992-04-22

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EP87112513A Expired - Lifetime EP0258831B1 (en) 1986-09-03 1987-08-28 Structure associated with cathode ray tubes for monitors, television sets or the like

Country Status (6)

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US (1) US4804883A (en)
EP (1) EP0258831B1 (en)
AT (1) ATE75357T1 (en)
DE (2) DE3629996A1 (en)
DK (1) DK168873B1 (en)
ES (1) ES2031099T3 (en)

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US5051652A (en) * 1988-12-06 1991-09-24 Asahi Glass Company, Ltd. Panel with anti-reflective multi-layered film thereon
DE3918859A1 (en) * 1989-06-09 1990-12-13 Balzers Gmbh Deutsche Coating for optical substrates - e.g. glass or plastic panels, has metal and dielectric layers
US5170291A (en) * 1989-12-19 1992-12-08 Leybold Aktiengesellschaft Coating, composed of an optically effective layer system, for substrates, whereby the layer system has a high anti-reflective effect, and method for manufacturing the coating
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DE4018399A1 (en) * 1990-06-08 1991-12-19 Leybold Ag METHOD FOR COATING A SUBSTRATE, ESPECIALLY A GLASS DISC, IN ORDER TO ACHIEVE OPACITY, AND METHOD COATED SUBSTRATE
FR2663486B1 (en) * 1990-06-15 1997-01-24 Thomson Consumer Electronics DEVICE FOR VIEWING OR PROJECTING IMAGES OR THE LIKE.
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Also Published As

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EP0258831B1 (en) 1992-04-22
EP0258831A3 (en) 1988-12-28
DK457387D0 (en) 1987-09-02
ES2031099T3 (en) 1992-12-01
DE3629996C2 (en) 1991-07-18
DK457387A (en) 1988-03-04
ATE75357T1 (en) 1992-05-15
DE3778457D1 (en) 1992-05-27
DE3629996A1 (en) 1988-03-17
US4804883A (en) 1989-02-14
DK168873B1 (en) 1994-06-27

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