US3652891A - Plasma display panel having display and counter conductors on one plate - Google Patents
Plasma display panel having display and counter conductors on one plate Download PDFInfo
- Publication number
- US3652891A US3652891A US56396A US3652891DA US3652891A US 3652891 A US3652891 A US 3652891A US 56396 A US56396 A US 56396A US 3652891D A US3652891D A US 3652891DA US 3652891 A US3652891 A US 3652891A
- Authority
- US
- United States
- Prior art keywords
- conductor
- conductors
- segmented
- cell
- arrays
- 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
- 239000004020 conductor Substances 0.000 title claims abstract description 176
- 238000005286 illumination Methods 0.000 claims abstract description 29
- 238000003491 array Methods 0.000 claims description 29
- 239000000463 material Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 230000000007 visual effect Effects 0.000 abstract description 2
- 210000004027 cell Anatomy 0.000 description 26
- 239000007789 gas Substances 0.000 description 22
- 239000011521 glass Substances 0.000 description 7
- 230000005684 electric field Effects 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000000151 deposition Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 229910052754 neon Inorganic materials 0.000 description 2
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000004180 plasmocyte Anatomy 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 230000009974 thixotropic effect Effects 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
Images
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
- H01J17/492—Display panels, e.g. with crossed electrodes, e.g. making use of direct current with crossed electrodes
Definitions
- ABSTRACT A plasma display panel of the gas discharge type comprising a plurality of discrete electrically excitable gas-containing cells. Associated with each cell is a conductor array comprising a plurality of segments and a corresponding common conductor all positioned on the same surface. A transparent dielectric film is deposited over each segment conductor array and each corresponding common conductor, so that all the conductors are capacitively coupled, but physically isolated from the excitable gas.
- a particular character is displayed on the plasma display device by alternately energizing a selected one of the segment conductors comprising the segment conductor array and the corresponding common conductor.
- the excitable gas immediately adjacent the energized segment conductors and the corresponding common conductor is ionized, with a resulting illumination which is visible to the human eye.
- the resulting illumination is confined to the area circumscribed by the energized segment conductors and the corresponding common conductor.
- a mask is provided which contains a plurality of openings generally conforming in shape to the segmented conductor array and so positioned that the openings are aligned with a corresponding segment conductor.
- the illumination provided by the occurrence of the ionization is sufficient for the visual display of numeric, symbolic, and alphabetic information.
- the plasma display panel is hermetically sealed in order to prevent the escape of any of the excitable gas into the atmosphere.
- This invention relates to a plasma display panel.
- Plasma display devices (or electroluminescent display devices, as they are sometimes referred to) which produce a glow upon the application of an electric field across a cell containing an excitable gas are well known.
- Devices of this type are exemplified in U.S. Pat. No. 3,127,535, issued Mar. 31, 1964, to Harold T. Westerheim; U.S. Pat. No. 3,327,154, issued June 20, 1967, on the application of Edwin R. Bowerman; U.S. Pat. No. 3,499,167, issued Mar. 3, 1970, on the application of Theodore C. Baker et al.; and British Pat. Nos. 1,161,832 and 1,161,833, both of which are owned by the University of Illinois Foundation.
- a problem generally common to most plasma and electroluminescent devices is the inability to provide a structure which has small physical dimensions and which is also capable of simple and inexpensive fabrication.
- the prior art devices are characteristic in that they utilize conductors which are physically opposed to each other; that is, on different plane surfaces and separated from each other by the intervening excitable gas.
- This type of structure requires the deposition of conductors on a plurality of plates, which increases the cost of fabricationfApplicants structure is novel in that it is a simple structure in which all the conductors are deposited on only one surface of the plasma panel.
- Applicants structure also provides a display device particularly suited for AC operation with voltages of relatively low magnitude.
- This invention relates to a hermetically sealed plasma display panel comprising first, second, and third plates, the second plate defining a plurality of cells when positioned between the first and third plates, wherein said defined cells are utilized for the containment of an excitable gas.
- On one side of each of the formed cells are positioned a segmented conductor array and a common conductor, the aforementioned conductors all being physically separated from the cell interior by a layer of a dielectric material such as glass.
- Each formed cell is capable of displaying information in the form of illuminated characters.
- the illumination necessary for the viewing of information on a particular cell is provided by applying an alternating electric potential across the common conductor and a selected segment conductor or selected segment conductors of the segmented array of conductors corresponding to the cell selected for illumination.
- the alternating potential gives rise tothe ionization of gas immediately adjacent those energized conductors.
- the illumination provided by the excited gas is restricted to the areas immediately adjacent the energized conductors because of the pressure and the composition of the gas.
- a nonconductive mask having a plurality of openings therein, each opening generally having the same configuration and corresponding to one of the segment conductors, is positioned in the panel in such a manner that the openings in the mask are in alignment with the segment conductors of the segmented conductor array.
- the insulating masks eliminates any stray illumination which may occur due to changes in the pressure and also eliminates any illumination caused by the conductors which connect like segments of each cell to a power source.
- the insulating mask also prevents a viewer from observing the illumination adjacent the energized common conductor.
- the entire assembly is sealed by conventional glass sealing methods in order to prevent the escape of any excitable gas.
- the common conductor is illustrated in a position different from that of the first embodiment.
- FIG. 1 is an exploded isometric view of the plasma display panel in accordance with the invention.
- FIG. 2 is a partial view of a second embodiment of the invention, in which the common conductor is shown vertically disposed adjacent the segmented conductor array.
- the plasma display panel is shown generally at 10.
- the panel includes plates 12 and 18, each having first and second sides, respectively.
- the plates 12 and 18 are preferably fabricated from a glass material. At least one of the plates is transparent or translucent, preferably the plate 12.
- the first side of the plate 18 has deposited thereon, by conventional techniques such as vacuum deposition, silk screening, electrolytic deposition, etc., a plurality of segmented conductor arrays 20a-n, each array comprising a plurality of segment conductors 2la-g.
- Each of the segmented conductor arrays 20a-n illustrated in FIG. 1 is shown as a seven-segment array, which may be utilized to form numerals.
- the surface area of the common conductor 22 is greater than the surface area of any of the segment conductors in the segmented conductor array 20 and should also be greater than the combined surface area of at least half of the combined segment conductors 21 in order to lessen the current density experienced by the common conductor 22 when a plurality of the segment conductors 21 are energized in order to display a number; for example, the number 8.
- a segmented conductor array 20 and a corresponding common conductor 22 are deposited on the first side of the plate 18 for each cell formed in the plasma display panel 10. It is noted that all corresponding segment conductors 21 of each segmented conductor array 20 are connected together by conductors 30 and brought out to a terminal 26 for connection to a power source (not shown).
- each segment conductor 21 may be brought out individually and connected to a power source.
- the mode of connecting the corresponding segment conductors is determined by the type of operation which the plasma panel will undergo.
- a thin transparent, translucent, or opaque dielectric layer 24, preferably glass, is deposited over all the segment and common conductors located on the first side of the plate 18.
- a spacing member 16 containing a plurality of openings defined by a plurality of frame members 28, is placed intermediate the plates 12 and 18.
- Each opening on the spacing member 16 defines one cell, which includes a segmented conductor array 20 and one common conductor 22.
- Each segmented conductor array 20 and the corresponding common conductor 22 are separated from any other adjacent segmented conductor array and its corresponding common conductor by the frame members 28, which are integral to the spacing member 16.
- the surface of the spacing member 16 is of such a roughness that gas can pass from one cell to another, thus providing cell pressure equalization.
- the spacing member 16 is shown as a rigid body containing a plurality of openings, the spacing member 16 may be eliminated, if desired, by placing a wall formation of glass-like material on the first side of the plate 18 between each combination of segmented conductor arrays and the corresponding common conductor in order to separate each segmented conductor array and corresponding common conductor from adjacent combinations of arrays and common conductors, thereby defining a plurality of cells.
- a mask '14 containing a plurality of openings thereon, is provided, each opening corresponding to one segment conductor 21 of each of the conductor arrays 20 positioned on the plate 18 for the purpose of further defining the illumination which emanates from the energized segment conductors 21 and also for concealing the illumination generated by the common conductor 22.
- the mask 14 also conceals any illumination provided by the connecting segment conductors 30. It is noted that the display panel does not require the mask 14 for its successful operation, since the illumination generated is restricted to the surfaces of the energized segment conductors and the common conductors 22.
- the mask 14 is shown as being stippled in order to illustrate that the mask 14 is dark in color.
- the transparent plate 12 completes the assembly comprising the transparent plate 12, the mask member 14, the spacing member 16, and the rear plate 18.
- a thixotropic slip is made with glass frit and applied to the periphery of the assembly 10 in such a manner as to provide a gastight seal when properly cured.
- a glass tube (not shown) may be secured to the rear of the plate 18 in a similar manner, to be utilized for evacuating the plasma cells of air and for introducing the excitable gas, such as a mixture of neon, argon, and nitrogen, into those cells.
- the terminals 26 and the common conductors 22 are connected to an alternating potential source (not shown) for the purpose of providing the alternating electric field.
- Ionization in this type of cell is initiated by an alternating electric field which causes an electron multiplication process to occur in the area immediately adjacent the conductors which are experiencing the alternating electrical field. This multiplication process occurs until ignition (that is, ionization), at which time a gaseous discharge occurs, which provides the illumination necessary for the character display.
- ignition that is, ionization
- the ionization of the gas also results in the deposition of electrical charges on the energized segment conductors and corresponding common conductor. The charges will have a polarity opposed to that which was impressed on the common and segment conductors and may be utilized in the control of the plasma display panel.
- the above process is reversible due to the alternating electric field, which is made necessary because the conductors are separated from the excitable gas by the thin dielectric layer 24.
- the mask member 14 was formed from dark-colored glass (thin plate etched or thick film screened) having a thickness of approximately 0.002 inch.
- the spacing member 16 and the plate 12 were formed from plate glass having a thickness of one-eighth inch.
- the segment conductors 2la-g and the common conductors 22a-n were formed from a material such as silk screen silver and were deposited to a thickness of 0.0005 inch.
- the surface area of the segment conductors 21a-g is, of course, dependent upon the amount of illumination desired.
- a gas mixture of 99.7% neon, 0.1% argon, and 0.2% nitrogen to a pressure of 35 millimeters of mercury at room temperature was utilized in the successful operation of the display panel. However, it was found that the display panel could be satisfactorily operated with pressures ranging from 16 to 70 millimeters of mercury.
- the alternating voltage used for exciting the gas mixture had a magnitude of 320 volts at a frequency of kHz. with a pulse width of 6 microseconds. However, the panel was successfully operated at 210 volts.
- the common conductor 22 is so positioned on the first side of the plate 18 that the distance from the segment conductor 210, which is farthest away from the common conductor 22a, is not greater than twice the distance of the nearest segment conductor 21d from the common conductor 22.
- the brightness generated by the above-described display panel ranged from 40 to 76 foot lamberts.
- FIG. 2 A modification of the device shown in FIG. 1 and described above is shown in FIG. 2.
- the common conductor is positioned at one side of the segmented conductor array rather than on the bottom.
- the mode of operation of the structure illustrated in FIG. 2 is similar to that shown in FIG. 1.
- a plasma display device of the type wherein a plurality of gas-containing cells are utilized for the display of intelligence comprising:
- each formed cell corresponding to the combination of one segmented conductor array and a common conductor
- said plasma display device further includes a mask member having a plurality of openings therethrough, said openings forming a plurality of arrays, whereby said arrays each correspond to one segmented conductor array for further defining illumination provided by the ionization of gas immediately adjacent selected segments of said segmented conductor arrays.
- a plasma display device comprising:
- each common conductor corresponding to one segmented conductor array
- a cell-forming member positioned on said support member, said cell-forming member forming a plurality of cells and being so constructed that pressure-equalizing paths are formed between said formed cells;
- a mask member positioned on said cell-forming member, said mask member having a plurality of openings therethrough, each opening corresponding to one segmented conductor of said segmented conductor arrays;
- said transparent member, said mask member, said cellforming member, and said support member being hermetically sealed;
Landscapes
- Gas-Filled Discharge Tubes (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US5639670A | 1970-07-20 | 1970-07-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3652891A true US3652891A (en) | 1972-03-28 |
Family
ID=22004122
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US56396A Expired - Lifetime US3652891A (en) | 1970-07-20 | 1970-07-20 | Plasma display panel having display and counter conductors on one plate |
Country Status (9)
Country | Link |
---|---|
US (1) | US3652891A (es) |
JP (1) | JPS5221349B1 (es) |
BE (1) | BE770228A (es) |
CA (1) | CA935501A (es) |
DE (1) | DE2135375C2 (es) |
ES (1) | ES393356A1 (es) |
FR (1) | FR2103048A5 (es) |
GB (1) | GB1302148A (es) |
ZA (1) | ZA714499B (es) |
Cited By (48)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3737707A (en) * | 1970-09-18 | 1973-06-05 | Sony Corp | Indicator tube utilizing a barrier electrode around each of the indicator units to which one of two voltages may be applied |
US3747175A (en) * | 1967-07-07 | 1973-07-24 | Sony Corp | Gaseous glow indicator tube formed on a substrate with a plurality of insulating layers |
US3781862A (en) * | 1970-07-27 | 1973-12-25 | Suwa Seikosha Kk | Display device for electronic calculator |
US3786487A (en) * | 1970-10-15 | 1974-01-15 | Sony Corp | Display device |
US3811061A (en) * | 1971-10-15 | 1974-05-14 | Fujitsu Ltd | Plane surface discharge plasma display panel |
US3849686A (en) * | 1972-05-23 | 1974-11-19 | Nippon Electric Co | Plasma display panel comprising a first external electrode for each digit and a second external electrode for each segment |
US3912964A (en) * | 1972-08-04 | 1975-10-14 | Hitachi Ltd | Multi-digit display apparatus |
US3917972A (en) * | 1970-09-11 | 1975-11-04 | Sony Corp | Multi-position indicator display tube |
US3979623A (en) * | 1970-09-11 | 1976-09-07 | Sony Corporation | Indicator display tube |
US4378649A (en) * | 1980-07-24 | 1983-04-05 | Cherry Electrical Products Corporation | Reflective shield for gas discharge display |
US4567481A (en) * | 1982-03-19 | 1986-01-28 | Mettler Instrumente Ag | Measuring instrument display with exchangeable legends for different languages or operating modes |
US5191046A (en) * | 1985-06-03 | 1993-03-02 | Mitsui Toatsu Chemicals, Incorporated | Transparent heat-resistant styrene-base copolymer |
US6818308B2 (en) * | 2000-06-13 | 2004-11-16 | Asahi Glass Company, Limited | Glass substrate for display and method of selecting it |
US7122961B1 (en) | 2002-05-21 | 2006-10-17 | Imaging Systems Technology | Positive column tubular PDP |
US7157854B1 (en) | 2002-05-21 | 2007-01-02 | Imaging Systems Technology | Tubular PDP |
US20070170504A1 (en) * | 2006-01-09 | 2007-07-26 | Samsung Electronics Co., Ltd | Thin film transistor substrate and method of fabricating the same and liquid crystal display having the thin film transistor substrate |
US7405516B1 (en) | 2004-04-26 | 2008-07-29 | Imaging Systems Technology | Plasma-shell PDP with organic luminescent substance |
US7535175B1 (en) | 2006-02-16 | 2009-05-19 | Imaging Systems Technology | Electrode configurations for plasma-dome PDP |
US7604523B1 (en) | 2004-06-21 | 2009-10-20 | Imaging Systems Technology | Plasma-shell PDP |
US7622866B1 (en) | 2005-02-22 | 2009-11-24 | Imaging Systems Technology | Plasma-dome PDP |
US7628666B1 (en) | 2002-05-21 | 2009-12-08 | Imaging Systems Technology | Process for manufacturing plasma-dome PDP |
US7638943B1 (en) | 2002-05-21 | 2009-12-29 | Imaging Systems Technology | Plasma-disc article of manufacture |
US7679286B1 (en) | 2002-05-21 | 2010-03-16 | Imaging Systems Technology | Positive column tubular PDP |
US7727040B1 (en) | 2002-05-21 | 2010-06-01 | Imaging Systems Technology | Process for manufacturing plasma-disc PDP |
US7730746B1 (en) | 2005-07-14 | 2010-06-08 | Imaging Systems Technology | Apparatus to prepare discrete hollow microsphere droplets |
US7772773B1 (en) | 2003-11-13 | 2010-08-10 | Imaging Systems Technology | Electrode configurations for plasma-dome PDP |
US7772774B1 (en) | 2002-05-21 | 2010-08-10 | Imaging Systems Technology | Positive column plasma display tubular device |
US7791037B1 (en) | 2006-03-16 | 2010-09-07 | Imaging Systems Technology | Plasma-tube radiation detector |
US7863815B1 (en) | 2006-01-26 | 2011-01-04 | Imaging Systems Technology | Electrode configurations for plasma-disc PDP |
US7923930B1 (en) | 2000-01-12 | 2011-04-12 | Imaging Systems Technology | Plasma-shell device |
US7932674B1 (en) | 2002-05-21 | 2011-04-26 | Imaging Systems Technology | Plasma-dome article of manufacture |
US7969092B1 (en) | 2000-01-12 | 2011-06-28 | Imaging Systems Technology, Inc. | Gas discharge display |
US8035303B1 (en) | 2006-02-16 | 2011-10-11 | Imaging Systems Technology | Electrode configurations for gas discharge device |
US8106586B1 (en) | 2004-04-26 | 2012-01-31 | Imaging Systems Technology, Inc. | Plasma discharge display with fluorescent conversion material |
US8110987B1 (en) | 2002-05-21 | 2012-02-07 | Imaging Systems Technology, Inc. | Microshell plasma display |
US8113898B1 (en) | 2004-06-21 | 2012-02-14 | Imaging Systems Technology, Inc. | Gas discharge device with electrical conductive bonding material |
US8129906B1 (en) | 2004-04-26 | 2012-03-06 | Imaging Systems Technology, Inc. | Lumino-shells |
US8138673B1 (en) | 2002-05-21 | 2012-03-20 | Imaging Systems Technology | Radiation shielding |
US8198811B1 (en) | 2002-05-21 | 2012-06-12 | Imaging Systems Technology | Plasma-Disc PDP |
US8198812B1 (en) | 2002-05-21 | 2012-06-12 | Imaging Systems Technology | Gas filled detector shell with dipole antenna |
US8278824B1 (en) | 2006-02-16 | 2012-10-02 | Imaging Systems Technology, Inc. | Gas discharge electrode configurations |
US8299696B1 (en) | 2005-02-22 | 2012-10-30 | Imaging Systems Technology | Plasma-shell gas discharge device |
US8339041B1 (en) | 2004-04-26 | 2012-12-25 | Imaging Systems Technology, Inc. | Plasma-shell gas discharge device with combined organic and inorganic luminescent substances |
US8368303B1 (en) | 2004-06-21 | 2013-02-05 | Imaging Systems Technology, Inc. | Gas discharge device with electrical conductive bonding material |
US8410695B1 (en) | 2006-02-16 | 2013-04-02 | Imaging Systems Technology | Gas discharge device incorporating gas-filled plasma-shell and method of manufacturing thereof |
US8618733B1 (en) | 2006-01-26 | 2013-12-31 | Imaging Systems Technology, Inc. | Electrode configurations for plasma-shell gas discharge device |
US9013102B1 (en) | 2009-05-23 | 2015-04-21 | Imaging Systems Technology, Inc. | Radiation detector with tiled substrates |
US9229937B2 (en) | 2006-04-06 | 2016-01-05 | Samsung Electronics Co., Ltd. | Apparatus and method for managing digital contents distributed over network |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3872346A (en) * | 1972-07-20 | 1975-03-18 | Takao Kunii | Character display discharge tube |
GB1396816A (en) * | 1972-09-27 | 1975-06-04 | Control Data Corp | Plasma discharge display panel |
DE2628130C3 (de) * | 1976-06-23 | 1981-10-22 | Naamloze Vennootschap Philips' Gloeilampenfabrieken, Eindhoven | Gasentladungs-Anzeigeröhre |
JPS5884370U (ja) * | 1981-12-01 | 1983-06-08 | 三菱電機株式会社 | 内燃機関用始動電動機の保護装置 |
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US3327154A (en) * | 1965-03-24 | 1967-06-20 | Gen Telephone & Elect | Ionizable gas display device with segmented electrode pattern |
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-
1970
- 1970-07-20 US US56396A patent/US3652891A/en not_active Expired - Lifetime
-
1971
- 1971-05-04 CA CA112153A patent/CA935501A/en not_active Expired
- 1971-06-07 JP JP46040085A patent/JPS5221349B1/ja active Pending
- 1971-07-06 GB GB3154971A patent/GB1302148A/en not_active Expired
- 1971-07-07 ZA ZA714499A patent/ZA714499B/xx unknown
- 1971-07-15 DE DE2135375A patent/DE2135375C2/de not_active Expired
- 1971-07-16 ES ES393356A patent/ES393356A1/es not_active Expired
- 1971-07-19 FR FR7126271A patent/FR2103048A5/fr not_active Expired
- 1971-07-20 BE BE770228A patent/BE770228A/xx not_active IP Right Cessation
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US3231776A (en) * | 1962-09-28 | 1966-01-25 | Sylvania Electric Prod | Display device |
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Cited By (53)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3747175A (en) * | 1967-07-07 | 1973-07-24 | Sony Corp | Gaseous glow indicator tube formed on a substrate with a plurality of insulating layers |
US3781862A (en) * | 1970-07-27 | 1973-12-25 | Suwa Seikosha Kk | Display device for electronic calculator |
US3979623A (en) * | 1970-09-11 | 1976-09-07 | Sony Corporation | Indicator display tube |
US3917972A (en) * | 1970-09-11 | 1975-11-04 | Sony Corp | Multi-position indicator display tube |
US3737707A (en) * | 1970-09-18 | 1973-06-05 | Sony Corp | Indicator tube utilizing a barrier electrode around each of the indicator units to which one of two voltages may be applied |
US3786487A (en) * | 1970-10-15 | 1974-01-15 | Sony Corp | Display device |
US3811061A (en) * | 1971-10-15 | 1974-05-14 | Fujitsu Ltd | Plane surface discharge plasma display panel |
US3849686A (en) * | 1972-05-23 | 1974-11-19 | Nippon Electric Co | Plasma display panel comprising a first external electrode for each digit and a second external electrode for each segment |
US3912964A (en) * | 1972-08-04 | 1975-10-14 | Hitachi Ltd | Multi-digit display apparatus |
US4378649A (en) * | 1980-07-24 | 1983-04-05 | Cherry Electrical Products Corporation | Reflective shield for gas discharge display |
US4567481A (en) * | 1982-03-19 | 1986-01-28 | Mettler Instrumente Ag | Measuring instrument display with exchangeable legends for different languages or operating modes |
US5191046A (en) * | 1985-06-03 | 1993-03-02 | Mitsui Toatsu Chemicals, Incorporated | Transparent heat-resistant styrene-base copolymer |
US7969092B1 (en) | 2000-01-12 | 2011-06-28 | Imaging Systems Technology, Inc. | Gas discharge display |
US7923930B1 (en) | 2000-01-12 | 2011-04-12 | Imaging Systems Technology | Plasma-shell device |
US6818308B2 (en) * | 2000-06-13 | 2004-11-16 | Asahi Glass Company, Limited | Glass substrate for display and method of selecting it |
US7157854B1 (en) | 2002-05-21 | 2007-01-02 | Imaging Systems Technology | Tubular PDP |
US8198812B1 (en) | 2002-05-21 | 2012-06-12 | Imaging Systems Technology | Gas filled detector shell with dipole antenna |
US8198811B1 (en) | 2002-05-21 | 2012-06-12 | Imaging Systems Technology | Plasma-Disc PDP |
US8138673B1 (en) | 2002-05-21 | 2012-03-20 | Imaging Systems Technology | Radiation shielding |
US8110987B1 (en) | 2002-05-21 | 2012-02-07 | Imaging Systems Technology, Inc. | Microshell plasma display |
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Also Published As
Publication number | Publication date |
---|---|
ES393356A1 (es) | 1977-04-16 |
ZA714499B (en) | 1972-03-29 |
FR2103048A5 (es) | 1972-04-07 |
BE770228A (fr) | 1971-12-01 |
CA935501A (en) | 1973-10-16 |
DE2135375A1 (de) | 1972-01-27 |
DE2135375C2 (de) | 1984-10-11 |
GB1302148A (es) | 1973-01-04 |
JPS5221349B1 (es) | 1977-06-09 |
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