US3900758A - Gaseous discharge display panel with fluorescent bodies surrounded by light attenuating material - Google Patents
Gaseous discharge display panel with fluorescent bodies surrounded by light attenuating material Download PDFInfo
- Publication number
- US3900758A US3900758A US343699A US34369973A US3900758A US 3900758 A US3900758 A US 3900758A US 343699 A US343699 A US 343699A US 34369973 A US34369973 A US 34369973A US 3900758 A US3900758 A US 3900758A
- Authority
- US
- United States
- Prior art keywords
- discharge
- electrodes
- dielectric layer
- display panel
- substrates
- 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.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 title claims abstract description 45
- 239000000758 substrate Substances 0.000 claims description 61
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 10
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 8
- 239000012535 impurity Substances 0.000 claims description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 5
- 239000004110 Zinc silicate Substances 0.000 claims description 5
- 229910017052 cobalt Inorganic materials 0.000 claims description 5
- 239000010941 cobalt Substances 0.000 claims description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 5
- ZOIVSVWBENBHNT-UHFFFAOYSA-N dizinc;silicate Chemical compound [Zn+2].[Zn+2].[O-][Si]([O-])([O-])[O-] ZOIVSVWBENBHNT-UHFFFAOYSA-N 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 claims description 5
- 229960001296 zinc oxide Drugs 0.000 claims description 5
- 239000011787 zinc oxide Substances 0.000 claims description 5
- 235000019352 zinc silicate Nutrition 0.000 claims description 5
- 229910000464 lead oxide Inorganic materials 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004020 luminiscence type Methods 0.000 abstract description 2
- 230000005855 radiation Effects 0.000 abstract description 2
- 230000004044 response Effects 0.000 abstract description 2
- 208000028659 discharge Diseases 0.000 description 101
- 239000007789 gas Substances 0.000 description 45
- 239000006059 cover glass Substances 0.000 description 4
- 230000002238 attenuated effect Effects 0.000 description 3
- 238000010894 electron beam technology Methods 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 235000014692 zinc oxide Nutrition 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 206010056740 Genital discharge Diseases 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J11/00—Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
Definitions
- the present invention relates to an improvement of a display panel utilizing gas discharge providing layers composed of fluorescent material, especially to a display panel utilizing gas discharge which decreases the cross talk which occurs when the fluorescent material is excited.
- a serious cross talk problem occurs when the display of the conventional plasma display panel is colourized by using a flourescent material.
- a fluorescent material emits light only at the point at which an electron beam is directed. Therefore, if the electron beam could be made fine and the position where the electron beam is directed could be precisely controlled, the problem of cross talk could be resolved.
- the colorization of a display panel such as a plasma display panel is based on the idea that ultraviolet rays or infrared rays which occur at the discharge excite the fluorescent material. Therefore, the emitted light based on the discharge diffuses in all directions, and said emitted light can not be focused. That is, the emitted light which occurs in the unit discharge region is diffused from said unit region to a neighbouring unit region and affects and excites the fluorescent material of the neighbouring unit.
- An object of the present invention is to provide a display panel utilizing gas discharge which overcomes the above-mentioned drawback of the conventional display panel utilizing gas discharge.
- a further object of the present invention is to provide a display panel utilizing gas discharge which provides alternately the layers composed of fluorescent material and the dielectric layers which have attenuation characteristics against an emitted light of a discharge, such as ultraviolet rays or infrared rays, in every gas discharge region of a display panel wherein a plurality of electrodes are arranged on two substrates which are positioned face to face with each other.
- a discharge such as ultraviolet rays or infrared rays
- a still further object of the present invention is to provide a display panel utilizing gas discharge which provides alternately the layers composed of fluorescent material and the dielectric layers which have attenuation characteristics against an emitted light of a discharge, such as ultraviolet rays or infrared rays, exciting the fluorescent material in every discharge region of a surface discharge type display panel which provides a plurality of electrodes on one substrate and produces the discharge between adjacent electrodes arranged on the same surface.
- a discharge such as ultraviolet rays or infrared rays
- the present invention concerns the display panel wherein there is formed a discharge space filled with gas between two inside surfaces of substrates, and which provides a group of discharge electrodes arranged at least on one of the inside surfaces of the substrates facing the discharge space, and every discharge electrodes provides a unit discharge region which can be addressed in the discharge space.
- the characteristic features of the present invention are that all discharge regions formed by the above-mentioned discharge electrodes are provided with layers composed of fluorescent material which are surrounded by the dielectric layers having attenuation characteristics against the emitted light generated by a discharge.
- FIG. I is a general view of the typical gas discharge display panel known as a plasma display panel
- FIG. 2 is a sectional view of the gas discharge display panel shown in FIG. 1;
- FIG. 3 is one example of a conventional display panel utilizing gas discharge which is provided with layers composed of fluorescent material;
- FIG. 4A is the first embodiment of a display panel utilizing gas discharge according to the present invention.
- FIG. 4B is a sectional view of the embodiment shown in FIG. 4A;
- FIGS. 5, and 6 are modified embodiments of the display panel shown in FIGS. 4A and 4B;
- FIG. 7 is the second embodiment of a display panel utilizing gas discharge according to the present invention.
- a display panel I utilizing a gaseous discharge has a pair of supporting substrates 2 and 2a.
- the supporting substrate 2 supports a group of electrodes 3 arranged in columns, parallel to vertical axis; dielectric layer 4 covers the group of electrodes 3.
- the supporting substrate 20 supports a group of electrodes 3a arranged in rows parallel to a horizontal axis; dielectric layer 4a covers the group of electrodes 3a.
- the supporting substrates 2 and 2a are positioned in spaced parallel relation to the groups of electrodes 3 and 3a respectively. As shown in FIG. 2 these parallel rows and columns are separated from each other by a gap 5.
- This gap 5 is filled with a rare gas having suitable pressure and capable of ionization.
- FIG. 3 shows one example of one substrate of a display panel utilizing fluorescent material in the prior art.
- linear electrodes 4 are provided on the glass substrate 5, and these electrodes are covered with a dielectric layer 6 and fluorescent material 7.
- the other substrate is arranged so that linear electrodes covered with a dielectric layer and fluorescent material 7 face the above-mentioned substrate via a discharge space.
- the discharge is produced in the discharge space between the dielectric layers by an electric signal which is supplied between both electrodes lines.
- the fluorescent material 7 having a ring form is provided on the dielectric substance in a position facing the discharge region, and is excited by ultraviolet rays generated by the discharge.
- the emitted light of the discharge generated in the cross point of both electrodes is diffused in all directions and the dif fusion of this emitted light becomes the cause of cross talk.
- dielectric layers 9 and 10, and fluorescent material II are provided in every unit discharge region determined by the discharge electrodes 12 on the glass substrate 8.
- FIG. 4A shows only one substrate having an arrangement of one set of electrodes and this substrate is disposed on the observing side. It is understood that the other substrate, which has other electrodes which are positioned, via a discharge space opposite the above-mentioned substrate 8, is omitted. Fluorescent materials for the other base plate may, or may not be formed. In this embodiment, material such as zincoxide or zinc-silicate can be utilized as a fluorescent material.
- the ends of the fluorescent bodies facing the discharge space can be easily penetrated by the emitted light A, which is directed at right angles to the ends of the fluorescent bodies.
- the emitted light which is directed obliquely is attenuated by the dielectric layer 9 and 10 and, therefore, the phenomenom of cross talk can be considerably decreased.
- the height of the fluorescent materials and the dielectric layer are the same.
- a more effective arrangement is the embodiment shown in FIG. 5, wherein the heights of the fluorescent bodies and the dielectric layer are different.
- an emitted light ray C which is directed obliquely, is more attenuated than the emitted light B shown in FIG. 4B. Therefore, the effect of decreasing cross talk is greater in FIG. 5 than in the embodiment shown in FIG. 4B.
- the fluorescent bodies 11 penetrate to the dielectric layer 8. However, it is not necessary that the fluorescent materials ll touch the base plate 8 as shown in FIG. 6.
- the embodiment shown in FIG. 6 has the advantage that fabrication can be easily carried out.
- a low temperature glass which includes lead oxide (PbO) as a main component is used as a material of the dielectric layer.
- PbO lead oxide
- impurities such as cobalt, nickel or chrome
- the latter becomes impervious to light.
- the degree of this impcrviousness to light can be controlled by the mixed amount of abovementioned impurities, and therefore, is adjustable so that ultraviolet rays are ef fectively attenuated.
- Helium, to which a very small amount of xenon is added, is recommended as the gas which is sealed in the discharge space.
- the attenuation layers 9 which surround each fluorescent body and attenuate the ultraviolet rays, and the dielectric layers 10, which cover each electrode, are constructed of the same material. However, it is understood that these can be constructed independently and of different materials.
- a display panel utilizing surface discharge where two groups of electrodes are arranged on only one substrate and discharge takes place between two electrodes on the same substrate is another type of display panel utilizing gas discharge.
- the present invention is also applicable to this type of display panel utilizing surface discharge, and the same effect is obtainable.
- FIG. 7 shows the embodiment where the present invention is applied to a matrix type display panel utilizing surface discharge.
- X electrodes 14 are provided in parallel on one substrate 13 and are covered with a dielectric layer 15.
- Y electrodes 16 are provided parallel and at right angles to X electrodes 14.
- Discharge parts 17 of the X electrodes 14 are formed on the co-planar surface with the Y electrodes 16 through the dielectric layer 15 near each crossing of the X and Y electrodes.
- These X electrodes 14 and Y electrodes 16 are covered with a dielectric layer 18.
- the discharge space 20 is provided between a cover glass 19 and the dielectric layer 18.
- Fluorescent bodies 21 corresponding to every discharge area are provided on the inside surface of the cover glass 19 and are surrounded by the attenuation layer 22 for attenuating ultraviolet rays.
- FIGS. 8A and 8B show an embodiment where the present invention is applied to a panel utilizing surface discharge for displaying numerals.
- a plurality of pairs of conductive segments 24a, 25a 30a and 24b, 25b 30b, are provided on one substrate 23 to form numerals.
- These segment electrodes are covered with dielectric layer 31.
- a discharge space 32 is positioned between a cover glass 33 and the dielectric layer 31.
- Fluorescent bodies 34 are provided on the inside surface of the cover glass 33, and correspond in arrangement to the abovementioned segment electrodes.
- the fluorescent bodies 34 are surrounded by the attenuation layer 35 for attenuating ultraviolet rays.
- a matrix type display panel utilizing surface discharge comprising,
- fluorescent bodies corresponding to every discharge part on the inside surface of said other dielectric substrate and i. a layer of ultra-violet light-attenuating material disposed completely around the sides of said fluorescent bodies but leaving exposed ends of said bodies facing said discharge space.
- a display panel utilizing surface gas discharge comprising,
- each plurality of segments being arranged so as to form a display numeral
- a display panel utilizing gas discharge and including a pair of substrates facing each other so as to define a single continuous gas discharge space which is filled with ionizable gas, said space being sealed, at least one of said substrates being transparent, a plurality of discharge electrodes arranged on the inside surface of at least one of said substrates and facing said space forming a group of addressable unit discharge regions, said gas being freely movable throughout said discharge space, said panel being characterized by a. a plurality of fluorescent bodies respectively provided in said plurality of unit discharge regions and having portions facing said discharge space, and
- a dielectric layer covering said electrodes and surrounding portions of said fluorescent bodies not facing said gas discharge space, the height of said dielectric layer being not less than that of said fluorescent bodies with reference to said substrate, said dielectric layer having, at least in the portions thereof surrounding said fluorescent bodies, attenuation characteristics against emitted light therefrom.
- the material of said dielectric layer is a low temperature glass which includes lead oxide as a main component and is mixed with a very small percentage of oxides of impurities such as cobalt, nickel or chrome.
- a display panel utilizing gas discharge and including a pair of substrates facing each other so as to define a single continuous gas discharge space which is filled with ionizable gas, said gas being sealed within said space, at least one of said substrates being transparent, first and second pluralities of discharge electrodes arranged respectively on the inside surfaces of said pair of substrates, said first and second pluralities of discharge electrodes facing and being separated by said gas discharge space and forming a group of addressable unit discharge regions, said gas being freely movable throughout said discharge space, said panel being characterized by a. a first dielectric layer covering said first plurality of discharge electrodes,
- a second dielectric layer covering said second plurality of discharge electrodes and having portions surrounding portions of said fluorescent bodies not facing said gas discharge space, the height of said second dielectric layer being not less than that of said fluorescent bodies with reference to said substrate, said second dielectric layer having, at least in the portions thereof surrounding said portions of said fluorescent bodies, attenuation characteristics against emitted light therefrom.
- a display panel according to claim 7 wherein the material of said fluorescent bodies is zinc-oxide or zinc silicate.
- said first and second dielectric layers are made of a low temperature glass which includes lead oxide as a main component mixed with a very small percentage of oxides of impurities such as cobalt, nickel or chrome.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Gas-Filled Discharge Tubes (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP47029761A JPS5250504B2 (ja) | 1972-03-27 | 1972-03-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3900758A true US3900758A (en) | 1975-08-19 |
Family
ID=12285038
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US343699A Expired - Lifetime US3900758A (en) | 1972-03-27 | 1973-03-22 | Gaseous discharge display panel with fluorescent bodies surrounded by light attenuating material |
Country Status (6)
Country | Link |
---|---|
US (1) | US3900758A (ja) |
JP (1) | JPS5250504B2 (ja) |
DE (1) | DE2315230C3 (ja) |
FR (1) | FR2178077B1 (ja) |
GB (1) | GB1427424A (ja) |
NL (1) | NL173687C (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4224553A (en) * | 1977-10-07 | 1980-09-23 | Licentia Patent-Verwaltungs-G.M.B.H. | Gas discharge indicator device |
WO2000007207A1 (en) * | 1998-07-30 | 2000-02-10 | Alliedsignal Inc. | Electroluminescent devices and method of forming same |
US6162750A (en) * | 1995-04-14 | 2000-12-19 | Nippon Electric Glass Co., Ltd. | Substrate glass and plasma display made by using the same |
US20040164681A1 (en) * | 2001-07-23 | 2004-08-26 | Udo Custodis | Flat discharge lamp |
US20110279385A1 (en) * | 2010-05-17 | 2011-11-17 | Prime View International Co., Ltd. | Touch display apparatus and electronic reading apparatus with touch input function |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS538053A (en) * | 1976-07-09 | 1978-01-25 | Fujitsu Ltd | Gas discharging panel |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2933648A (en) * | 1956-08-14 | 1960-04-19 | Gen Electric | Information display apparatus |
US3559190A (en) * | 1966-01-18 | 1971-01-26 | Univ Illinois | Gaseous display and memory apparatus |
US3562737A (en) * | 1967-12-19 | 1971-02-09 | Schjeldahl Co G T | Electro-optical device |
US3573531A (en) * | 1968-03-18 | 1971-04-06 | Sylvania Electric Prod | Plasma panel display device |
US3701916A (en) * | 1971-02-01 | 1972-10-31 | Burroughs Corp | Display panel having gas-filled cells utilizing phosphor materials |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3013182A (en) * | 1960-05-24 | 1961-12-12 | Singer Inc H R B | Electronic display panel |
-
1972
- 1972-03-27 JP JP47029761A patent/JPS5250504B2/ja not_active Expired
-
1973
- 1973-03-21 GB GB1349173A patent/GB1427424A/en not_active Expired
- 1973-03-22 US US343699A patent/US3900758A/en not_active Expired - Lifetime
- 1973-03-23 NL NLAANVRAGE7304099,A patent/NL173687C/xx not_active IP Right Cessation
- 1973-03-27 FR FR7310990A patent/FR2178077B1/fr not_active Expired
- 1973-03-27 DE DE2315230A patent/DE2315230C3/de not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2933648A (en) * | 1956-08-14 | 1960-04-19 | Gen Electric | Information display apparatus |
US3559190A (en) * | 1966-01-18 | 1971-01-26 | Univ Illinois | Gaseous display and memory apparatus |
US3562737A (en) * | 1967-12-19 | 1971-02-09 | Schjeldahl Co G T | Electro-optical device |
US3573531A (en) * | 1968-03-18 | 1971-04-06 | Sylvania Electric Prod | Plasma panel display device |
US3701916A (en) * | 1971-02-01 | 1972-10-31 | Burroughs Corp | Display panel having gas-filled cells utilizing phosphor materials |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4224553A (en) * | 1977-10-07 | 1980-09-23 | Licentia Patent-Verwaltungs-G.M.B.H. | Gas discharge indicator device |
US6162750A (en) * | 1995-04-14 | 2000-12-19 | Nippon Electric Glass Co., Ltd. | Substrate glass and plasma display made by using the same |
WO2000007207A1 (en) * | 1998-07-30 | 2000-02-10 | Alliedsignal Inc. | Electroluminescent devices and method of forming same |
US6075317A (en) * | 1998-07-30 | 2000-06-13 | Alliedsignal Inc. | Electroluminescent device having increased brightness and resolution and method of fabrication |
US20040164681A1 (en) * | 2001-07-23 | 2004-08-26 | Udo Custodis | Flat discharge lamp |
US20110279385A1 (en) * | 2010-05-17 | 2011-11-17 | Prime View International Co., Ltd. | Touch display apparatus and electronic reading apparatus with touch input function |
US8692782B2 (en) * | 2010-05-17 | 2014-04-08 | E Ink Holdings Inc. | Touch display apparatus and electronic reading apparatus with touch input function |
Also Published As
Publication number | Publication date |
---|---|
JPS4898769A (ja) | 1973-12-14 |
DE2315230C3 (de) | 1980-12-18 |
DE2315230A1 (de) | 1973-10-18 |
JPS5250504B2 (ja) | 1977-12-24 |
FR2178077B1 (ja) | 1976-11-05 |
NL173687C (nl) | 1984-02-16 |
NL173687B (nl) | 1983-09-16 |
NL7304099A (ja) | 1973-10-01 |
GB1427424A (en) | 1976-03-10 |
FR2178077A1 (ja) | 1973-11-09 |
DE2315230B2 (de) | 1977-03-10 |
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