EP0013365A1 - Pièce d'écartement dans un dispositif d'affichage à décharge à gaz - Google Patents

Pièce d'écartement dans un dispositif d'affichage à décharge à gaz Download PDF

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Publication number
EP0013365A1
EP0013365A1 EP79105077A EP79105077A EP0013365A1 EP 0013365 A1 EP0013365 A1 EP 0013365A1 EP 79105077 A EP79105077 A EP 79105077A EP 79105077 A EP79105077 A EP 79105077A EP 0013365 A1 EP0013365 A1 EP 0013365A1
Authority
EP
European Patent Office
Prior art keywords
glass
perforated plate
foils
holes
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
EP79105077A
Other languages
German (de)
English (en)
Other versions
EP0013365B1 (fr
Inventor
Wilhelm Huber
Peter Mammach
Kaspar Dr. Rer. Nat. Weingand
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Priority to AT79105077T priority Critical patent/ATE3738T1/de
Publication of EP0013365A1 publication Critical patent/EP0013365A1/fr
Application granted granted Critical
Publication of EP0013365B1 publication Critical patent/EP0013365B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/38—Cold-cathode tubes
    • H01J17/48—Cold-cathode tubes with more than one cathode or anode, e.g. sequence-discharge tube, counting tube, dekatron
    • H01J17/49—Display panels, e.g. with crossed electrodes, e.g. making use of direct current

Definitions

  • the invention relates to a spacer in a gas discharge display device, in which glass elements are arranged between a control perforated plate and a luminescent screen.
  • the web thickness between the holes should not, however, exceed 0.1 mm, because on the one hand the holes are sufficiently large, but on the other hand there must be a sufficient number. There must be one hole per pixel (the total number is 625 lines x 1500 columns) and all quivers must be evenly spaced from each other.
  • the entire so-called post-acceleration space between the control perforated plate and the fluorescent screen is filled with a glass body except for the holes provided for the continuous electron paths.
  • the distance can thus be reliably maintained over the entire fluorescent screen area.
  • the relatively narrow holes in the insulator body cause problems with the field distribution.
  • the perforated walls and the glass can become statically charged both from scattered primary electrons and from secondary electrons from the fluorescent screen. Inhomogeneities arise within the electrical field between the control slat and the (post-acceleration) anode lying on the fluorescent screen, which in extreme cases can prevent the electrons from getting to the fluorescent screen. This is all the more so since the acceleration voltages cannot be very high with the flat design and the electrons are therefore low-energy.
  • the present invention has for its object to design the already proposed spacer so that not only the mechanical-geometric function of the spacing but also the electronic requirements are met.
  • Such a gas discharge display combines the advantage of the exact spacing between the control perforated plate and the fluorescent screen with the advantage of reliable electrical electron beam guidance.
  • the electrical field between the control perforated plate and the anode is kept stable by interposing potential areas.
  • a single layer of metal improves the homogeneity of the field.
  • the advantages of film construction come into their own, because such a metal layer can be inserted between each pair of glass films for the potential distribution.
  • etch-resistant metal layers which serve to cover the webs between the holes during the etching of the glass foils, remain on the glass foils, but are at least removed on the glass foil surface adjacent to the control perforated plate.
  • the metal layers are kept at floating potentials.
  • a further improvement with regard to a homogenized potential distribution is achieved if the walls of the glass foil holes are provided with a resistance coating. This is done, for example, by tempering the glass in a suitable metal salt vapor.
  • the glass of the control perforated plate, the glass foils and the fluorescent screen are made of the same material and have at least the same coefficient of thermal expansion. This not only has a favorable effect on the necessary glass-glass connections, ie there are no fears of thermal cracks - but also on the stability of the electrical conditions due to the stability of the geometry. This applies both to a configuration of the spacer, according to which the glass foils are held in the correct position with respect to one another by means of positioning pins, and also to the configuration, according to which the glass foils extend laterally beyond the active image area and serve as a vacuum-sealed connection element between the control perforated plate and the fluorescent screen.
  • the thermal stability also exists if, for example, sunlight on the front causes one-sided heating.
  • the largely coherent and Relatively uniform glass body of the actual image-releasing device part - control perforated plate, spacer and fluorescent screen - ensures a balancing heat conduction in itself.
  • the fluorescent screen of a plasma display is designated by 1 in FIG. 1.
  • a luminescent layer 11 in the form of luminous dots and an anode layer 12 on top of it.
  • Three glass foils 2, 3, 4 and a control perforated plate 5 are stacked on top of each other and there are electrode tracks 13 and 14 for the row and column control are arranged as described in DE-OS 24 12 869.
  • the left half of FIG. 1 shows an embodiment where the glass foils 2, 3, 4 and the control perforated plate 5 are positioned pins 10 are held.
  • the glass foils 2, 3, 4 and the control perforated plate 5 are brought out and fused to the edge with the flange 6 and with the fluorescent screen 1.
  • the flange-shaped thickened edge 6 of the rear part of the plasma display sits on the edge of the control perforated plate 5.
  • the spacer according to the invention lies between the fluorescent screen and the control perforated plate 5. It consists of the three stacked glass foils 2, 3 and 4 and the metallic intermediate layers 7 and 8; at the hole locations of the control perforated plate 5, they have continuous aligned holes. An example of the shape of the holes is shown in FIG. 2.
  • the holes in the control perforated plate 5 and in the glass foils 2, 3, 4 are created by etching.
  • the removal of glass material by etching holes at certain points always requires certain ratios of the size and distance of the holes from one another to the depth, i.e. with through holes to the glass thickness. These conditions determine the inevitable lateral undercut and thus the possible number of holes as well as the mechanical stability of the entire arrangement with regard to the webs remaining between the holes.
  • the side undercut is reduced to an acceptable level.
  • the glass foils 2, 3, 4 are individually etched using the same etching mask as the control perforated plate 5. This ensures that the holes are precisely aligned after assembly.
  • a metal layer resistant to the glass etchant is applied to the glass plate or film to be etched, and a photoresist layer thereon. About the common etching mask the photoresist layer is exposed at the locations to be etched and the metal is removed there with an appropriate etchant. The remaining metal layer covers the glass webs that are to remain.
  • the metal layers can remain on the glass foils 2, 3, 4 with the exception of the metal layer which adjoins the control perforated plate 5. There, the metal layer on the control electrode tracks 14 could cause short circuits or at least field distortions.
  • the metal layers 7, 8 homogenize the potential gradient in the acceleration space. The metal layer remaining on the glass foil 2 and facing the anode layer 12 has no further effect.
  • a hole is shown as an embodiment where the walls in the glass foils 2, 3 and 4 are covered with a resistance layer 9. Local charging of the perforated walls is completely avoided here. The homogeneity of the field has been further improved.

Landscapes

  • Gas-Filled Discharge Tubes (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
EP79105077A 1978-12-20 1979-12-10 Pièce d'écartement dans un dispositif d'affichage à décharge à gaz Expired EP0013365B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79105077T ATE3738T1 (de) 1978-12-20 1979-12-10 Abstandshalterung in einer gasentladungsanzeigevorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19782855108 DE2855108A1 (de) 1978-12-20 1978-12-20 Abstandshalterung in einer gasentladungsanzeigevorrichtung
DE2855108 1978-12-20

Publications (2)

Publication Number Publication Date
EP0013365A1 true EP0013365A1 (fr) 1980-07-23
EP0013365B1 EP0013365B1 (fr) 1983-06-08

Family

ID=6057798

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79105077A Expired EP0013365B1 (fr) 1978-12-20 1979-12-10 Pièce d'écartement dans un dispositif d'affichage à décharge à gaz

Country Status (5)

Country Link
US (1) US4322656A (fr)
EP (1) EP0013365B1 (fr)
JP (1) JPS5588246A (fr)
AT (1) ATE3738T1 (fr)
DE (1) DE2855108A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0031921B1 (fr) * 1979-12-28 1984-05-09 Siemens Aktiengesellschaft Dispositif d'affichage à décharge à gaz comportant au moins un cadre d'écartement limitant l'espace de post-accélération

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2952601C2 (de) * 1979-12-28 1982-09-02 Siemens AG, 1000 Berlin und 8000 München Gasentladungsanzeigevorrichtung
DE3036671A1 (de) * 1980-09-29 1982-05-13 Siemens AG, 1000 Berlin und 8000 München Flacher bildschirm, verfahren zu seiner herstellung und seine verwendung
DE3445628A1 (de) * 1984-12-14 1986-06-19 Standard Elektrik Lorenz Ag, 7000 Stuttgart Flache bildwiedergabevorrichtung
CN1026943C (zh) * 1990-03-06 1994-12-07 杭州大学 平板彩色显示器
US5347201A (en) * 1991-02-25 1994-09-13 Panocorp Display Systems Display device
US5229691A (en) * 1991-02-25 1993-07-20 Panocorp Display Systems Electronic fluorescent display
JP4111298B2 (ja) * 1999-06-29 2008-07-02 株式会社日立プラズマパテントライセンシング プラズマディスプレイパネル
US20110023548A1 (en) * 2009-07-29 2011-02-03 Garner Sean M Glass substrate comprising an edge web portion

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1512329A1 (de) * 1966-06-15 1969-08-07 Metro Goldwyn Mayer Inc Matrixanordnung
DE2147881A1 (fr) * 1970-09-24 1972-03-30 Thomson Csf
GB1389191A (en) * 1972-03-24 1975-04-03 Sperry Rand Corp Electrode structures
DE2412869A1 (de) * 1974-03-18 1975-10-02 Siemens Ag Entladungs-lumineszenz-anzeigeeinrichtung
DE2615721A1 (de) * 1976-04-09 1977-10-13 Siemens Ag Gasentladungsanzeigevorrichtung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR958354A (fr) * 1947-11-29 1950-03-08
DE2802976C2 (de) * 1978-01-24 1980-02-07 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verfahren und Vorrichtung zur Herstellung von Durchbrüchen (Löchern) in Glasplatten, vorzugsweise mit feinsten Strukturen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1512329A1 (de) * 1966-06-15 1969-08-07 Metro Goldwyn Mayer Inc Matrixanordnung
DE2147881A1 (fr) * 1970-09-24 1972-03-30 Thomson Csf
GB1389191A (en) * 1972-03-24 1975-04-03 Sperry Rand Corp Electrode structures
DE2412869A1 (de) * 1974-03-18 1975-10-02 Siemens Ag Entladungs-lumineszenz-anzeigeeinrichtung
DE2615721A1 (de) * 1976-04-09 1977-10-13 Siemens Ag Gasentladungsanzeigevorrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0031921B1 (fr) * 1979-12-28 1984-05-09 Siemens Aktiengesellschaft Dispositif d'affichage à décharge à gaz comportant au moins un cadre d'écartement limitant l'espace de post-accélération

Also Published As

Publication number Publication date
JPS5588246A (en) 1980-07-03
DE2855108A1 (de) 1980-06-26
US4322656A (en) 1982-03-30
EP0013365B1 (fr) 1983-06-08
ATE3738T1 (de) 1983-06-15

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