EP0012921A1 - Dispositif plat d'affichage par decharge dans un gaz - Google Patents

Dispositif plat d'affichage par decharge dans un gaz Download PDF

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Publication number
EP0012921A1
EP0012921A1 EP79105079A EP79105079A EP0012921A1 EP 0012921 A1 EP0012921 A1 EP 0012921A1 EP 79105079 A EP79105079 A EP 79105079A EP 79105079 A EP79105079 A EP 79105079A EP 0012921 A1 EP0012921 A1 EP 0012921A1
Authority
EP
European Patent Office
Prior art keywords
screen
plate
layer
metallization
glass
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
EP79105079A
Other languages
German (de)
English (en)
Other versions
EP0012921B1 (fr
Inventor
Hans Peter Dr. Rer. Nat. Lorenz
Rolf Dr. Rer. Nat. Wengert
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 AT79105079T priority Critical patent/ATE2363T1/de
Publication of EP0012921A1 publication Critical patent/EP0012921A1/fr
Application granted granted Critical
Publication of EP0012921B1 publication Critical patent/EP0012921B1/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
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/28—Luminescent screens with protective, conductive or reflective layers
    • 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
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H01J9/22—Applying luminescent coatings
    • H01J9/227—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines
    • H01J9/2278—Application of light absorbing material, e.g. between the luminescent areas

Definitions

  • the invention relates to a fluorescent screen for flat, mutually separated black-colored image display devices with illuminated dot areas separated from one another by a black border.
  • a single-screen or multi-color finely screened luminescent screen is provided with high luminous efficacy required.
  • a plasma serves as the actual cathode, from which an electron beam is drawn via a control perforated plate with matrix control for each illuminated spot to be excited.
  • the electron beams in gas discharge display devices are low-energy. Due to the flat design, high acceleration voltages are not possible. It is therefore extremely important to get a high luminous efficacy when converting the electron energy into light or when generating light in the luminous dots, for example through UV radiation.
  • the active fluorescent surface can be considerably enlarged or better utilized compared to the pure illuminated dot surface. More electrons reach fluorescent particles that emit their light in all directions, including forward. The total amount of light emitted towards the front is significantly larger for each luminous point, as if only one non-reflecting fluorescent surface corresponding to the luminous point and only lying in the luminous point plane is used.
  • the perforated plate separates the illuminated dots from each other. No electrons scattered at one luminous point can reach an adjacent luminous point. This decoupling of the luminous dots considerably improves the contrast and color purity compared to purely flat arrangement of the shields. Reflected electrons also contribute to increasing the luminous efficiency when they hit additional phosphor layers of the same color.
  • alternative b3 Compared to alternative b2) (additional phosphor layers), a further increase in the luminous efficacy according to alternative b3) is achieved by metallizing the perforated walls, i.e. at the locations of the perforated walls where the additional layer of fluorescent material is attached, between the wall and the fluorescent layer. As a result, the light component emitted by the phosphor in the direction of the perforated wall is at least partially reflected in the direction of the screen glass.
  • This shape of the holes can also be used advantageously when combining additional fluorescent material and metallization (alternative b3).
  • An advantageous embodiment results from targeted shaping of the holes if the widening with the metallization approximately results in a parabolic mirror.
  • the metallization of the perforated walls also extends to the connecting surfaces of the perforated plate with the black border layer, so that a coherent, electrically conductive layer is formed. Then the entire metallization can be used as an electrode for the impinging electrons.
  • the metallization takes place before the perforated plate is applied, for example by a cathode sputtering process, by vapor deposition, a defined metallization depth into the holes being achieved by a certain vapor deposition angle, by chemical vapor deposition or by electroless deposition in the liquid phase.
  • the metallization of the perforated plate is set to a potential which, firstly, allows enough electrons to strike the wall and thus the fluorescent substance located there according to alternative b3), and secondly to prevent opening charge effects which derives electrons and thirdly leaves enough electrons for the phosphor layer sitting on the screen glass, ie does not impair the function of the acceleration anode located between the phosphor layer and the screen glass.
  • the perforated plate is preferably made of glass and is melted onto the black border layer. An intermediate metallization does not affect this connection. The use of a suitable ceramic material is also possible.
  • the perforated plate is so strong that it serves as a spacer between the screen glass plate and the control perforated plate used in a gas charge indicator.
  • the perforated plate is only used as a base for any further plates or elements as a spacer between the screen glass plate and the control perforated plate, it enables an exact spacing in which the fluorescent layers are protected.
  • 1 denotes a screen glass as the front pane of a flat gas discharge image display device.
  • a black border layer 3 in the form of a grid, which leaves the surfaces 4 free for luminous dots.
  • a perforated plate 5 On the black border layer 3 there is a perforated plate 5, which has through-holes 6 above the grid openings 4 of the black border layer 3.
  • the further structure can be seen from the sectional view of FIG. 2.
  • fluorescent layers (7) as luminous dots, which further extend onto the walls of the Extend holes 6 to about two thirds of the depth.
  • a metallization layer 8 which also extends to the walls of the holes 6 and comes to rest there between the phosphor layers 7 and the perforated walls of the perforated plate 5.
  • a 1 mm thick glass pane is used as the perforated plate 5, the outer dimensions of which correspond to those of the screen glass 1.
  • the holes have either been created using classic glass etching processes or by means of a photo process, as is used, for example, in the commercially available photo-shaped glass.
  • the metallization is carried out by evaporating a 100 nm thick Al layer 8 in a high vacuum.
  • the holes 6 are vapor-coated with aluminum to a depth of approximately 0.2 mm. With a perforated area of approx. 0.2 x 0.5 mm 2, the "active" area is quadrupled.
  • Screen glass 1 and perforated plate 5 are sintered together after adjustment, the pre-dried glass solder grid applied to the screen glass 1 of the black border 3 serving as solder.
  • FIG. 3 shows the configuration of the perforated plate 5, where the holes 6 expand conically in the direction of the screen glass 1.
  • the structure of the screen glass 1, the anode layer 2, the black border layer 3, the metallization layer 8 and the perforated plate 5 corresponds to that of FIG. 2.
  • the phosphor layer 7 lies only on the screen glass 1 and not on the walls of the holes 6.
  • Both light emitted to the rear and electrons reflected by the phosphor layer 7 are reflected at the metallization 8 and back onto the phosphor layer 7 thrown where this light is at least partially added to the forward emitted light and where secondary electrons can generate more light.
  • the conical shape of the holes 6 is created, for example, by etching the perforated plate 5 made of glass.
  • FIG. 4 shows the embodiment in which the holes 6 of the glass plate 5 are widened again towards the screen glass 1 and a metallization layer 8. wear, but where the phosphor layer 7 is pulled up to the metallization 8 of the perforated walls and where the expansion is approximately parabolic by appropriate etching, so that 8 parabolic mirrors are formed with the metallization.
  • the holes 6 of the perforated plate 5 are formed by etching on both sides and are thus open on both sides. They are approximately double-cone-shaped, the cone open toward the screen glass 1 carrying the metallization 8 and the phosphor layer 7.
  • the two-sided expansion of the holes 6 has the advantage that the cone walls can be kept steeper without the electron-side opening of the holes 6 becoming too narrow. This is particularly advantageous if the perforated plate 5 is so thick that it serves as a spacer between the screen glass 1 and the control perforated plate of the gas discharge display device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Gas-Filled Discharge Tubes (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
EP79105079A 1978-12-20 1979-12-10 Dispositif plat d'affichage par decharge dans un gaz Expired EP0012921B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79105079T ATE2363T1 (de) 1978-12-20 1979-12-10 Flaches gasentladungsanzeigegeraet.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2855090A DE2855090C2 (de) 1978-12-20 1978-12-20 Leuchtschirm für flache Bildanzeigegeräte
DE2855090 1978-12-20

Publications (2)

Publication Number Publication Date
EP0012921A1 true EP0012921A1 (fr) 1980-07-09
EP0012921B1 EP0012921B1 (fr) 1983-01-26

Family

ID=6057789

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79105079A Expired EP0012921B1 (fr) 1978-12-20 1979-12-10 Dispositif plat d'affichage par decharge dans un gaz

Country Status (5)

Country Link
US (1) US4352042A (fr)
EP (1) EP0012921B1 (fr)
JP (1) JPS5588244A (fr)
AT (1) ATE2363T1 (fr)
DE (1) DE2855090C2 (fr)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4692662A (en) * 1984-07-13 1987-09-08 Okuno Chemical Industries Co. Ltd. High contrast display device
US5086297A (en) * 1988-06-14 1992-02-04 Dai Nippon Insatsu Kabushiki Kaisha Plasma display panel and method of forming fluorescent screen thereof
US4853590A (en) * 1988-08-01 1989-08-01 Bell Communications Research, Inc. Suspended-electrode plasma display devices
JP2964512B2 (ja) * 1989-12-18 1999-10-18 日本電気株式会社 カラープラズマディスプレイ
GB2254486B (en) * 1991-03-06 1995-01-18 Sony Corp Flat image-display apparatus
DE69325123T2 (de) * 1992-03-23 1999-11-18 Koninklijke Philips Electronics N.V., Eindhoven Verfahren zum Herstellen einer Platte aus einem elektrisch isolierenden Material mit einem Muster von Löchern oder Hohlräumen zum Gebrauch in Wiedergabeanordungen
US5734224A (en) * 1993-11-01 1998-03-31 Canon Kabushiki Kaisha Image forming apparatus and method of manufacturing the same
US5455489A (en) * 1994-04-11 1995-10-03 Bhargava; Rameshwar N. Displays comprising doped nanocrystal phosphors
KR950034365A (ko) * 1994-05-24 1995-12-28 윌리엄 이. 힐러 평판 디스플레이의 애노드 플레이트 및 이의 제조 방법
EP0700752B1 (fr) * 1994-09-06 1998-08-19 Koninklijke Philips Electronics N.V. Procédé pour réaliser un motif dans une couche se trouvant sur un substrat
JPH08138559A (ja) * 1994-11-11 1996-05-31 Hitachi Ltd プラズマディスプレイ装置
US5608285A (en) * 1995-05-25 1997-03-04 Texas Instruments Incorporated Black matrix sog as an interlevel dielectric in a field emission device
US5577943A (en) * 1995-05-25 1996-11-26 Texas Instruments Inc. Method for fabricating a field emission device having black matrix SOG as an interlevel dielectric
US5951350A (en) * 1996-09-18 1999-09-14 Matsushita Electric Industrial Co., Ltd. Production method of plasma display panel suitable for minute cell structure, the plasma panel, and apparatus for displaying the plasma display panel
KR100476043B1 (ko) * 1999-06-21 2005-03-10 비오이 하이디스 테크놀로지 주식회사 전계 방출 표시 소자 및 그 제조방법
US6515419B1 (en) * 1999-07-23 2003-02-04 Lg Electronics Inc. Plasma display panel with barriers and electrodes having different widths depending on the discharge cell
US6653777B1 (en) * 1999-11-24 2003-11-25 Canon Kabushiki Kaisha Image display apparatus
JP3989209B2 (ja) * 2001-09-12 2007-10-10 篠田プラズマ株式会社 ガス放電管及びそれを用いた表示装置
JP4098121B2 (ja) * 2003-03-03 2008-06-11 株式会社日立製作所 平面型表示装置
KR100607968B1 (ko) * 2004-04-27 2006-08-03 삼성전자주식회사 플라즈마 디스플레이 패널
KR20060059747A (ko) * 2004-11-29 2006-06-02 삼성에스디아이 주식회사 전자방출 표시장치
WO2023286315A1 (fr) * 2021-07-16 2023-01-19 ソニーグループ株式会社 Système d'affichage

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1052242A (fr) * 1900-01-01
CH344143A (de) * 1955-08-16 1960-01-31 Standard Telephon & Radio Ag Festkörper-Bildverstärker
DE2135132B2 (de) * 1970-02-24 1972-11-16 Bildschirm fuer farbbildkathodenstrahlroehren
DE2421442A1 (de) * 1973-05-07 1974-11-28 Gte Sylvania Inc Multiplex-bildschirmaufbau einer farbbildkathodenstrahlroehre und herstellungsverfahren
DE2422698A1 (de) * 1973-05-11 1974-11-28 Hitachi Ltd Bildschirm und verfahren zu seiner herstellung
DE2458677A1 (de) * 1973-12-12 1975-06-26 Hitachi Ltd Flache sichtplatte und verfahren zu deren betrieb
DE2105496B2 (de) * 1970-02-05 1975-08-28 Tokyo Shibaura Electric Co., Ltd., Kawasaki, Kanagawa (Japan) Gasentladungs-Anzeigevorrichtung
FR2278152A1 (fr) * 1974-07-12 1976-02-06 Thomson Csf Nouvelle matrice pour panneau a plasma monochrome ou polychrome, et panneau de visualisation comportant une telle matrice
DE2534393A1 (de) * 1974-08-29 1976-03-11 Burroughs Corp Steckbare anzeigetafel

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2509071A (en) * 1945-05-29 1950-05-23 Pennybacker Miles Gas discharge lamp
US3619698A (en) * 1970-02-05 1971-11-09 Burroughs Corp Display panel
US3845241A (en) * 1973-02-02 1974-10-29 Zenith Radio Corp Television display panel having gas discharge cathodo-luminescent elements
DE2412869C3 (de) * 1974-03-18 1980-10-30 Siemens Ag, 1000 Berlin Und 8000 Muenchen Anzeigevorrichtung mit einem Gasentladungsraum als Elektronenquelle, mit einem Elektronennachbeschleunigungsraum und mit einem Leuchtschirm und Verfahren zum Betrieb dieser Anzeigevorrichtung
SU508820A1 (ru) * 1974-06-17 1976-03-30 Предприятие П/Я В-8769 Индикаторна панель
DE2508393C2 (de) * 1975-02-26 1983-02-17 Siemens AG, 1000 Berlin und 8000 München Gasentladungsanzeigevorrichtung und Verfahren zu ihrem Betrieb
SU601724A1 (ru) * 1976-06-15 1978-04-05 Предприятие П/Я В-8769 Плазменна индикаторна панель
JPS5412259A (en) * 1977-06-29 1979-01-29 Hitachi Ltd Color picture tube
DE2806436C2 (de) * 1978-02-15 1984-03-01 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verfahren zur Herstellung einer Schwarzumrandung von Leuchtpunkten auf dem Schirmglas eines Farbbildschirmes

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1052242A (fr) * 1900-01-01
CH344143A (de) * 1955-08-16 1960-01-31 Standard Telephon & Radio Ag Festkörper-Bildverstärker
DE2105496B2 (de) * 1970-02-05 1975-08-28 Tokyo Shibaura Electric Co., Ltd., Kawasaki, Kanagawa (Japan) Gasentladungs-Anzeigevorrichtung
DE2135132B2 (de) * 1970-02-24 1972-11-16 Bildschirm fuer farbbildkathodenstrahlroehren
DE2421442A1 (de) * 1973-05-07 1974-11-28 Gte Sylvania Inc Multiplex-bildschirmaufbau einer farbbildkathodenstrahlroehre und herstellungsverfahren
DE2422698A1 (de) * 1973-05-11 1974-11-28 Hitachi Ltd Bildschirm und verfahren zu seiner herstellung
DE2458677A1 (de) * 1973-12-12 1975-06-26 Hitachi Ltd Flache sichtplatte und verfahren zu deren betrieb
FR2278152A1 (fr) * 1974-07-12 1976-02-06 Thomson Csf Nouvelle matrice pour panneau a plasma monochrome ou polychrome, et panneau de visualisation comportant une telle matrice
DE2534393A1 (de) * 1974-08-29 1976-03-11 Burroughs Corp Steckbare anzeigetafel

Also Published As

Publication number Publication date
US4352042A (en) 1982-09-28
EP0012921B1 (fr) 1983-01-26
JPS5588244A (en) 1980-07-03
DE2855090C2 (de) 1980-09-18
ATE2363T1 (de) 1983-02-15
DE2855090B1 (de) 1980-01-24

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