EP0012920A1 - Ecran luminescent pour tubes indicateurs d'image et procédé pour sa fabrication - Google Patents
Ecran luminescent pour tubes indicateurs d'image et procédé pour sa fabrication Download PDFInfo
- Publication number
- EP0012920A1 EP0012920A1 EP79105078A EP79105078A EP0012920A1 EP 0012920 A1 EP0012920 A1 EP 0012920A1 EP 79105078 A EP79105078 A EP 79105078A EP 79105078 A EP79105078 A EP 79105078A EP 0012920 A1 EP0012920 A1 EP 0012920A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- depressions
- metal
- dielectric
- glass plate
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 238000000034 method Methods 0.000 title description 4
- 239000011521 glass Substances 0.000 claims abstract description 18
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000005530 etching Methods 0.000 claims abstract description 6
- 238000005507 spraying Methods 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 9
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 3
- 239000011159 matrix material Substances 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 49
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 9
- 238000010894 electron beam technology Methods 0.000 description 7
- 125000006850 spacer group Chemical group 0.000 description 7
- 230000006870 function Effects 0.000 description 5
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 229920002120 photoresistant polymer Polymers 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 150000002902 organometallic compounds Chemical class 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Images
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
- H01J29/30—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines
- H01J29/32—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines with adjacent dots or lines of different luminescent material, e.g. for colour television
-
- 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
- H01J29/24—Supports for luminescent material
-
- 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
- H01J9/2271—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines by photographic processes
Definitions
- the invention relates to a fluorescent screen for picture display tubes with a screen glass plate and illuminated dots thereon, the surfaces of which are separated from one another by a contrasting border.
- the invention further relates to a method for producing such a fluorescent screen.
- a single or multi-colored finely screened luminescent screen is 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 point to be excited.
- the electron beams in gas discharge display devices are low-energy due to the gas filling and the flat design. It is therefore extremely important to get a high luminous efficacy when converting the electron energy into light energy or also when controlling the light points with UV light, for example.
- Such a metal layer would also be desirable for the phosphor layer at the luminous points as a protective layer against mechanical loads, in particular when building a flat screen, where spacers are necessary between the fluorescent screen and the control perforated plate. For the reasons mentioned above, however, it would have to be so thin that it could no longer perform these protective functions.
- the present invention has for its object to build a fluorescent screen so that the luminous points have a sufficiently high luminous efficacy even without a metal mirror and that there is the possibility of stably attaching spacers without endangering the contrast border or fluorescent layers.
- the active fluorescent area can be increased considerably.
- the electron beam hits more phosphor particles.
- the amount of light emitted towards the front becomes significantly larger per luminous point than if only one fluorescent surface corresponding to the luminous point and only lying in the luminous point plane is used.
- primary electrons are used.
- secondary electrons i.e. For example, electrons reflected at the plane of the red dot can hit fluorescent particles on the walls of the depressions and contribute to better light output.
- the luminous dots are largely separated from one another. If the depressions are large enough, electrons scattered from a light spot can hardly reach an adjacent light spot. This decoupling of the luminous dots considerably improves the contrast and color purity compared to purely flat screen arrangements.
- a vapor-deposited contrast border layer in particular as a carrier layer for spacers is much more stable. It is harder and adheres better.
- contrast border layer Another function of the contrast border layer can be added if it is electrically conductive and serves as a carrier for the fluorescent screen potential. Then there is no need to provide a separate anode layer.
- the composition of metal and dielectric changes in the course of the layer thickness, with first pure dielectric being applied, then more and more metal being added with a decreasing dielectric component and finally a pure metallic final layer is brought up.
- composition of metal and dielectric changes in the course of the layer thickness changes that layers of dielectric and layers of metal are applied alternately with preferably varying layer thicknesses and the last layer is metallic.
- the metallic components ensure electrical conductivity. Due to the fine distribution of these metallic components, the density of which increases with increasing thickness as viewed by the luminescent screen, the contrasting border layer absorbs light from the viewer side very strongly without reflecting metal. The last, purely metallic, part of the layer additionally makes the layer opaque and increases the absorption, so that even very thin layers appear dark or black.
- the metal component consists of nickel, copper, platinum or gold.
- the contrast border layers and the depressions under the phosphor layer are covered with a continuous electrically conductive potential layer, which then serves as an anode layer. This does not affect the resilience above the contrast border layer for applied spacers.
- a screen glass plate which is, for example, the front window of a gas discharge display in the form of a flat screen.
- the screen glass plate 1 is shown cut from the side. The viewer side is at the bottom, the inside of the gas discharge display device is at the top. The spacers then placed on top, the control perforated disk supported thereon and the entire rear part of the gas discharge indicator as seen by the viewer are omitted.
- depressions 2 On the inside of the screen glass plate 1 there are depressions 2 with an approximately rectangular cross section. The bottoms of these depressions are the illuminated dot areas of the fluorescent screen and are accordingly attached in the same grid. A contrast border layer 3 is located on the remaining webs. The bottoms and walls of the depressions 2 and the contrast border layer 3 are covered by a potential layer 4. In the recesses 2 on the floor and pulled up on the walls there is a phosphor layer 5 above the potential layer 4. The electrons accelerated in the direction of the fluorescent screen are indicated by arrows.
- the fluorescent screen shown is manufactured for example as follows:
- the nickel content is increased from 0 to 100% during the vapor deposition.
- the evaporation rates can be set by means of an electron beam oscillating over two crucibles filled with the appropriate evaporation materials with a controlled dwell time or by means of two controlled electron beams or also by means of temperature and pressure-controlled evaporation of the dielectric in connection with a vapor rate-controlled electron beam gun for the metal.
- a contrast border layer 3 with a thickness of 300 nm, for example, appears black from the viewer and reflects on the inside of the gas discharge display device.
- photoresist is applied, which is then removed in the red dot grid, i.e. at the points where the recesses 2 are to be created.
- the uppermost nickel layer is first removed with a suitable etching agent, for example with a mixture of nitric acid and hydrochloric acid or copper sulfate, through the photoresist window thus created.
- the recesses 2 are etched out first through the remaining contrast border layer 2 in the windows and then into the screen glass plate 1, for example with hydrofluoric acid or with a mixture of hydrofluoric acid and sulfuric acid. After this etching process, the photoresist is removed and the screen glass plate 1 now provided with the depressions 2 is cleaned with the aid of an aqueous ultrasound bath.
- the potential layer 4 made of indium oxide (In 2 0 3 ) is sputtered on. This is followed, for example, by spraying on the floors and walls of the depressions 2 with the phosphor layer 5.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Gas-Filled Discharge Tubes (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT79105078T ATE2033T1 (de) | 1978-12-20 | 1979-12-10 | Leuchtschirm fuer bildanzeigeroehren und verfahren zu seiner herstellung. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2855142A DE2855142C2 (de) | 1978-12-20 | 1978-12-20 | Leuchtschirm einer Bildanzeigeröhre |
| DE2855142 | 1978-12-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0012920A1 true EP0012920A1 (fr) | 1980-07-09 |
| EP0012920B1 EP0012920B1 (fr) | 1982-12-15 |
Family
ID=6057806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP79105078A Expired EP0012920B1 (fr) | 1978-12-20 | 1979-12-10 | Ecran luminescent pour tubes indicateurs d'image et procédé pour sa fabrication |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4325002A (fr) |
| EP (1) | EP0012920B1 (fr) |
| JP (1) | JPS5588245A (fr) |
| AT (1) | ATE2033T1 (fr) |
| DE (1) | DE2855142C2 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1985005490A1 (fr) * | 1984-05-10 | 1985-12-05 | American Telephone & Telegraph Company | Tube cathodique |
| FR2736463A1 (fr) * | 1994-05-04 | 1997-01-10 | Motorola Inc | Dalle d'ecran d'affichage d'images dotee de creux de reception de gouttelettes de luminophores et son procede de fabrication |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4622272A (en) * | 1984-07-31 | 1986-11-11 | Siemens Aktiengesellschaft | Luminescent screen for picture display apparatus and method for manufacturing such device |
| US5086297A (en) * | 1988-06-14 | 1992-02-04 | Dai Nippon Insatsu Kabushiki Kaisha | Plasma display panel and method of forming fluorescent screen thereof |
| KR910005090B1 (en) * | 1989-06-02 | 1991-07-22 | Samsung Electronic Devices | Method of making the spacer of display device |
| US6787995B1 (en) * | 1992-01-28 | 2004-09-07 | Fujitsu Limited | Full color surface discharge type plasma display device |
| US5793158A (en) * | 1992-08-21 | 1998-08-11 | Wedding, Sr.; Donald K. | Gas discharge (plasma) displays |
| US5461279A (en) * | 1992-09-10 | 1995-10-24 | Sanyo Electric Co. Ltd. | Flat fluorescent lamp having a luminescent surface with a diffusion groove |
| US5734224A (en) * | 1993-11-01 | 1998-03-31 | Canon Kabushiki Kaisha | Image forming apparatus and method of manufacturing the same |
| US6008577A (en) * | 1996-01-18 | 1999-12-28 | Micron Technology, Inc. | Flat panel display with magnetic focusing layer |
| US6590334B1 (en) * | 1996-01-18 | 2003-07-08 | Micron Technology, Inc. | Field emission displays having reduced threshold and operating voltages and methods of producing the same |
| US5725407A (en) * | 1996-04-08 | 1998-03-10 | Industrial Technology Research Institute | Process for manufacturing a luminescent display screen that features a sloping structure |
| DE69722664T2 (de) * | 1996-09-18 | 2003-12-18 | Matsushita Electric Industrial Co., Ltd. | Herstellungsverfahren einer Plasmaanzeigetafel, geeignet für winzige Zellstrukturen, und Plasmaanzeigetafel |
| US5990620A (en) * | 1997-09-30 | 1999-11-23 | Lepselter; Martin P. | Pressurized plasma display |
| KR100476043B1 (ko) * | 1999-06-21 | 2005-03-10 | 비오이 하이디스 테크놀로지 주식회사 | 전계 방출 표시 소자 및 그 제조방법 |
| US6570322B1 (en) * | 1999-11-09 | 2003-05-27 | Micron Technology, Inc. | Anode screen for a phosphor display with a plurality of pixel regions defining phosphor layer holes |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2705765A (en) * | 1950-04-03 | 1955-04-05 | Geer Charles Willard | Single gun color television receiving tube and screen structure |
| US3146368A (en) * | 1961-04-04 | 1964-08-25 | Rauland Corp | Cathode-ray tube with color dots spaced by light absorbing areas |
| US3569760A (en) * | 1967-10-26 | 1971-03-09 | George F Fargher | Color tube with phosphor strips separated by guard bands |
| DE2165704A1 (de) * | 1971-12-30 | 1973-07-12 | Hitachi Ltd | Leuchtschirme fuer kathodenstrahlroehren |
| DE2151280B2 (fr) * | 1970-10-15 | 1973-10-11 | Tokyo Shibaura Electric Co. Ltd., Kawasaki, Kanagawa (Japan) | |
| DE2806436A1 (de) * | 1978-02-15 | 1979-08-16 | Siemens Ag | Verfahren zum herstellen von insbesondere schwarz gefaerbten umrandungen von bildschirmpigmenten einstellbarer leitfaehigkeit fuer vorzugsweise flache farb-bildschirme |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE684368C (de) | 1937-06-18 | 1939-11-27 | Philips Patentverwaltung | Braunsche Roehre mit einer zwischen der Fluoreszenzmasse des Leuchtschirmes und der Glaswandung der Fluoreszenzschirmoberflaeche befindlichen metallischen Schicht |
| US2882413A (en) * | 1953-12-04 | 1959-04-14 | Vingerhoets Antonius Wilhelmus | Luminescent screen |
| DE1015312B (de) | 1954-12-03 | 1957-09-05 | Koch & Sterzel Ag | Lumineszenzschirm |
| US3582701A (en) * | 1969-03-27 | 1971-06-01 | Zenith Radio Corp | Color tube screen with light-absorbing cermet deposits |
| US3619698A (en) * | 1970-02-05 | 1971-11-09 | Burroughs Corp | Display panel |
| US3614503A (en) * | 1970-02-24 | 1971-10-19 | Zenith Radio Corp | Black-surround color picture tube |
| US3654505A (en) | 1970-06-05 | 1972-04-04 | Motorola Inc | Black enamel glass for cathode-ray tube |
| NL7016929A (fr) * | 1970-11-19 | 1972-05-24 | ||
| JPS5115853B2 (fr) * | 1972-02-23 | 1976-05-20 | ||
| US3858083A (en) | 1973-05-07 | 1974-12-31 | Gte Sylvania Inc | Cathode ray tube screen structure |
| JPS504662U (fr) * | 1973-05-15 | 1975-01-18 | ||
| 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 |
| JPS5820450B2 (ja) * | 1974-12-27 | 1983-04-23 | ソニー株式会社 | 放電形扁平カラ−表示管の製法 |
| JPS5816290B2 (ja) * | 1975-01-21 | 1983-03-30 | ソニー株式会社 | ヘイメンホウデンヒヨウジソウチ |
| JPS5412259A (en) * | 1977-06-29 | 1979-01-29 | Hitachi Ltd | Color picture tube |
-
1978
- 1978-12-20 DE DE2855142A patent/DE2855142C2/de not_active Expired
-
1979
- 1979-12-10 AT AT79105078T patent/ATE2033T1/de not_active IP Right Cessation
- 1979-12-10 EP EP79105078A patent/EP0012920B1/fr not_active Expired
- 1979-12-11 US US06/102,541 patent/US4325002A/en not_active Expired - Lifetime
- 1979-12-20 JP JP16678679A patent/JPS5588245A/ja active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2705765A (en) * | 1950-04-03 | 1955-04-05 | Geer Charles Willard | Single gun color television receiving tube and screen structure |
| US3146368A (en) * | 1961-04-04 | 1964-08-25 | Rauland Corp | Cathode-ray tube with color dots spaced by light absorbing areas |
| US3569760A (en) * | 1967-10-26 | 1971-03-09 | George F Fargher | Color tube with phosphor strips separated by guard bands |
| DE2151280B2 (fr) * | 1970-10-15 | 1973-10-11 | Tokyo Shibaura Electric Co. Ltd., Kawasaki, Kanagawa (Japan) | |
| DE2165704A1 (de) * | 1971-12-30 | 1973-07-12 | Hitachi Ltd | Leuchtschirme fuer kathodenstrahlroehren |
| DE2806436A1 (de) * | 1978-02-15 | 1979-08-16 | Siemens Ag | Verfahren zum herstellen von insbesondere schwarz gefaerbten umrandungen von bildschirmpigmenten einstellbarer leitfaehigkeit fuer vorzugsweise flache farb-bildschirme |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1985005490A1 (fr) * | 1984-05-10 | 1985-12-05 | American Telephone & Telegraph Company | Tube cathodique |
| FR2736463A1 (fr) * | 1994-05-04 | 1997-01-10 | Motorola Inc | Dalle d'ecran d'affichage d'images dotee de creux de reception de gouttelettes de luminophores et son procede de fabrication |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2855142C2 (de) | 1985-01-17 |
| US4325002A (en) | 1982-04-13 |
| EP0012920B1 (fr) | 1982-12-15 |
| ATE2033T1 (de) | 1982-12-15 |
| JPS5588245A (en) | 1980-07-03 |
| DE2855142A1 (de) | 1980-06-26 |
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Legal Events
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| 17P | Request for examination filed |
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| ITF | It: translation for a ep patent filed | ||
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