EP0205166A2 - Tube image - Google Patents

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Info

Publication number
EP0205166A2
EP0205166A2 EP86107963A EP86107963A EP0205166A2 EP 0205166 A2 EP0205166 A2 EP 0205166A2 EP 86107963 A EP86107963 A EP 86107963A EP 86107963 A EP86107963 A EP 86107963A EP 0205166 A2 EP0205166 A2 EP 0205166A2
Authority
EP
European Patent Office
Prior art keywords
display device
image display
security film
frame
fluorescent screen
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.)
Granted
Application number
EP86107963A
Other languages
German (de)
English (en)
Other versions
EP0205166B1 (fr
EP0205166A3 (en
Inventor
Kurt-Manfred Tischer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Nokia Unterhaltungselektronik Deutschland GmbH
Standard Elektrik Lorenz AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nokia Unterhaltungselektronik Deutschland GmbH, Standard Elektrik Lorenz AG filed Critical Nokia Unterhaltungselektronik Deutschland GmbH
Publication of EP0205166A2 publication Critical patent/EP0205166A2/fr
Publication of EP0205166A3 publication Critical patent/EP0205166A3/de
Application granted granted Critical
Publication of EP0205166B1 publication Critical patent/EP0205166B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • H01J29/87—Arrangements for preventing or limiting effects of implosion of vessels or containers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/87—Means for avoiding vessel implosion
    • H01J2229/875—Means substantially covering the output face, e.g. resin layers, protective panels

Definitions

  • the invention relates to an image display device according to the preamble of claim 1.
  • DE-AS 11 1 87 742 discloses a method for producing a coating from a plastic sheet on the end face of a cathode ray tube.
  • the cathode ray tube has a cone with a piston neck as the back and a curved shield trough on the front.
  • the plastic sheet is applied to the outside of the curved screen trough as an anti-explosion protection.
  • a tension band is placed around the circumference of the tube and provided with a tensile stress of approximately 450 kg.
  • This type of explosion protection is only possible in the case of image display devices with a curved screen trough with side parts.
  • the security against implosion is achieved in that the prestressed glass system of the image display device is brought into a tension-free state by mechanical pressure due to the tensioning strap.
  • the invention has for its object to provide an implosion protection for an image display device with a flat fluorescent screen.
  • the image display device contains on the back a metallic trough 1, the edges 2 of which are angled outwards and serve as a support for a spacer frame 3.
  • the flat glass fluorescent screen 4 is arranged on the spacer frame 3.
  • the cathodes, the control structure and the luminescent layer are not shown since these details are not required for the description of the protection against implosion in the image display device.
  • the fluorescent screen 4 carries a security film 5, the edge of which extends to the side surfaces 9 of the fluorescent screen 4.
  • the security film 5 can be glued to the whole surface or only on the side surfaces 9 of the fluorescent screen 4.
  • An acrylate can be used as an adhesive.
  • a security film is understood to be a film that is elastic and can hold back glass parts when the fluorescent screen breaks.
  • the security film can, for example, consist of polyester (polyethylene terephthalate) and be 25 to 60 ⁇ m thick. Such a security film is available under the name "Security film Tesa 4592".
  • a frame 6 is loosely placed around the luminescent screen 4, the upper edge of which is bent in the direction of the outer surface 10 of the luminescent screen 4 and which projects somewhat onto the outer surface 10 of the luminescent screen.
  • the space between the frame 6 and the side surfaces 9 of the fluorescent screen or the security film 5 is filled with a tough elastic potting compound 7.
  • the potting compound 7 can for example consist of polyurethane. Since the security film 5 is usually not scratch-resistant and solvent-resistant, it is covered by a thin glass pane 8.
  • the security film 5 or the glass pane 8 can be colored and thus serve as a contrast pane.
  • the edge of the frame 6 bent towards the outer surface 10 of the fluorescent screen 4 can leave an intermediate space to the security film 5, which is then filled by the sealing compound 7.
  • the edge of the frame 6 can, however, as shown on the left side of the fluorescent screen 4, rest directly on the security film.
  • the potting compound 7 can be introduced from below into the space between the fluorescent screen 4 and the frame 6. Holes 11 can also be present in the frame 6, through which the casting compound 7 is introduced.
  • the security film can be replaced by an applied plastic layer (not shown) if the approximately 1 to 2 mm thick glass pane covers the area between the upper edge of the frame. A composite system similar to the safety glass is then created.

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Transforming Electric Information Into Light Information (AREA)
EP86107963A 1985-06-14 1986-06-11 Tube image Expired EP0205166B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3521315 1985-06-14
DE19853521315 DE3521315A1 (de) 1985-06-14 1985-06-14 Bildwiedergabevorrichtung

Publications (3)

Publication Number Publication Date
EP0205166A2 true EP0205166A2 (fr) 1986-12-17
EP0205166A3 EP0205166A3 (en) 1987-12-23
EP0205166B1 EP0205166B1 (fr) 1989-08-30

Family

ID=6273241

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86107963A Expired EP0205166B1 (fr) 1985-06-14 1986-06-11 Tube image

Country Status (5)

Country Link
US (1) US4709272A (fr)
EP (1) EP0205166B1 (fr)
JP (1) JPH0754674B2 (fr)
CA (1) CA1270891A (fr)
DE (2) DE3521315A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0387738A1 (fr) * 1989-03-13 1990-09-19 Matsushita Electric Industrial Co., Ltd. Dispositif d'affichage à panneau plat
US4991304A (en) * 1987-06-11 1991-02-12 Renishaw Workpiece inspection method
EP0527343A2 (fr) * 1991-08-14 1993-02-17 International Business Machines Corporation Elément du type de plaque entouré d'une garniture sur ses faces latérales

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63198243A (ja) * 1987-02-12 1988-08-16 Mitsubishi Electric Corp 防爆形陰極線管
US5074644A (en) * 1987-09-18 1991-12-24 Pioneer Electronic Corporation Rear projection television
US4992881A (en) * 1989-04-14 1991-02-12 Honeywell Inc. Protective cover for flight instrument filter glass
US5072301A (en) * 1990-03-12 1991-12-10 Zenith Electronics Corporation Apparatus and process for implosion protection in cathode ray tubes

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1187742B (de) * 1961-11-13 1965-02-25 Rca Corp Verfahren zur Herstellung eines UEberzugs aus einem Kunststoffblatt auf der Stirnflaeche einer Kathodenstrahlroehre
FR1477706A (fr) * 1966-03-10 1967-04-21 Saint Gobain Perfectionnement à la fabrication des tubes cathodiques, notamment pour la télévision en couleurs
US4016364A (en) * 1975-10-20 1977-04-05 Zenith Radio Corporation Color television picture tubes with improved implosion protection system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3009017A (en) * 1953-05-22 1961-11-14 Libbey Owens Ford Glass Co Laminated television screen
NL280647A (fr) * 1963-07-05 1964-12-10

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1187742B (de) * 1961-11-13 1965-02-25 Rca Corp Verfahren zur Herstellung eines UEberzugs aus einem Kunststoffblatt auf der Stirnflaeche einer Kathodenstrahlroehre
FR1477706A (fr) * 1966-03-10 1967-04-21 Saint Gobain Perfectionnement à la fabrication des tubes cathodiques, notamment pour la télévision en couleurs
US4016364A (en) * 1975-10-20 1977-04-05 Zenith Radio Corporation Color television picture tubes with improved implosion protection system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4991304A (en) * 1987-06-11 1991-02-12 Renishaw Workpiece inspection method
EP0387738A1 (fr) * 1989-03-13 1990-09-19 Matsushita Electric Industrial Co., Ltd. Dispositif d'affichage à panneau plat
US5031788A (en) * 1989-03-13 1991-07-16 Matsushita Electric Industrial Co., Ltd. Flat panel display device
US5085334A (en) * 1989-03-13 1992-02-04 Matsushita Electric Industrial Co., Ltd. Flat panel display device
EP0527343A2 (fr) * 1991-08-14 1993-02-17 International Business Machines Corporation Elément du type de plaque entouré d'une garniture sur ses faces latérales
EP0527343A3 (en) * 1991-08-14 1993-04-07 International Business Machines Corporation Plate-shaped component surrounded by a sealing on its lateral faces
US5364673A (en) * 1991-08-14 1994-11-15 International Business Machines Corporation Transparent plate-shaped component having a stepped edge totally surrounded by a seal

Also Published As

Publication number Publication date
EP0205166B1 (fr) 1989-08-30
EP0205166A3 (en) 1987-12-23
DE3665377D1 (en) 1989-10-05
US4709272A (en) 1987-11-24
DE3521315A1 (de) 1986-12-18
JPH0754674B2 (ja) 1995-06-07
CA1270891A (fr) 1990-06-26
JPS61288356A (ja) 1986-12-18

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