US3327154A - Ionizable gas display device with segmented electrode pattern - Google Patents

Ionizable gas display device with segmented electrode pattern Download PDF

Info

Publication number
US3327154A
US3327154A US442377A US44237765A US3327154A US 3327154 A US3327154 A US 3327154A US 442377 A US442377 A US 442377A US 44237765 A US44237765 A US 44237765A US 3327154 A US3327154 A US 3327154A
Authority
US
United States
Prior art keywords
substrate
conducting paths
insulating layer
display device
glow discharge
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
Application number
US442377A
Inventor
Edwin R Bowerman
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.)
Verizon Laboratories Inc
GTE LLC
Original Assignee
General Telephone and Electronics Corp
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 General Telephone and Electronics Corp filed Critical General Telephone and Electronics Corp
Priority to US442377A priority Critical patent/US3327154A/en
Application granted granted Critical
Publication of US3327154A publication Critical patent/US3327154A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • H01J17/491—Display panels, e.g. with crossed electrodes, e.g. making use of direct current with electrodes arranged side by side and substantially in the same plane, e.g. for displaying alphanumeric characters

Definitions

  • This invention relates to display devices and more particularly to a glow discharge display device.
  • a glow discharge display device is generally comprised of a transparent envelope which contains an anode electrode, a number of cathode electrodes, and an ionizable gas capable of supporting a glow discharge.
  • the application of a suitable D.C. voltage between the anode electrode and a selected cathode electrode results in the breakdown of the gas and current fiow through the gas from the cathode to the anode. This breakdown of the gas is characterized by a glow at the surface of the selected cathode.
  • the shape of the cathode elements determines the pattern of the glow discharge of the gas and many difierent alpha-numeric cathode configurations have been employed.
  • One particularly useful configuration is a segmented cathode having a figure-eight shape and comprising seven substantially equal segments.
  • the anode electrode may be formed in the two central portions of the figure-eight or a wire mesh screen may be spaced from the entire pattern.
  • the glow discharge depicts any numeral from 1 to 0.
  • other configurations have been employed to permit the representation of any desired letter and/ or numeral.
  • the segments of the cathode electrode are generally formed by engraving or other graphic arts techniques and are mounted on a mica insulator.
  • the cathode segments are provided with lugs which extend through the insulator and serve to position and lock the segments in place.
  • a common anode may be provided by a wire mesh screen which is assembled over the cathode segments and is locked in place to the mica insulator. The assembly is then provided with a supporting base and gas-containing envelope. The electrical connections within the display device are provided by wiring each cathode electrode segment to an external pin connector. The wire used must be insulated to prevent any glow discharge from occurring thereat.
  • the display device construction is found to have certain disadvantages. These disadvantagesarise from the fact that each cathode segment must be supported on the insulator by mounting lugs and then individually wired to an external pin connector on the envelope base. Since the number of cathode segments may be thirteen or greater for alpha-numeric cathode electrodes, the mounting and wiring steps performed during assembly have resulted in an increase in cost, complexity and size of the manufactured display device.
  • an object of the present invention is the provision of a glow discharge display device wherein the segmented cathode electrode and the electrical connections thereto are formed on One side of a suitable substrate.
  • Another object is to provide a glow discharge display device wherein the cathode electrode and the electrical connections to the segments thereof may be formed by graphic arts techniques on a glass substrate.
  • a further object is to provide a glow discharge display device in which a cathode pattern and corresponding glow discharge may be formed on more than one surface of the substrate.
  • a display device of the glow discharge type in which a plurality of conducting paths are formed on one surface of a substrate. Over-lying a portion of the conducting paths is an insulating layer, which may be a glass frit suitably glazed. The insulating layer is provided with a plurality of apertures extending therethrough. Each of the apertures in the insulating layer is positioned to register with one of the conducting paths formed on the glass substrate.
  • a segmented electrode pattern is then formed on the insulating layer with each segment being formed about at least one of the apertures in the insulating layer. Each segment is electrically connected through an aperture to a conducting path.
  • the connections may be readily attained through the use of evaporation or metal spray techniques in forming the electrode pattern.
  • the electrode pattern is then covered by an envelope containing an ionizable gas having a pressure capable of sustaining a glow discharge.
  • the envelope is hermetically bonded to the insulating layer.
  • the display device is formed entirely on one side of the substrate so that no connecting holes need be formed in the substrate.
  • inexpensive substrate materials such as sheet glass, wherein it is generally difiicult to form holes, may be readily employed.
  • a further advantage is realized in the afore-discussed construction in that restricting the graphic arts techniques to one surface of the substrate permits similar operations to be concurrently performed on more than one surface of the substrate.
  • a display device may be formed on each of the opposing broad-area surfaces of a relatively thin substrate.
  • a plurality of display devices may be formed on each surface of a large-area substrate with a single gas-filled envelope provided on each surface.
  • FIG. 1 is an exploded view of one embodiment of the invention
  • FIG. 2 is a side view in section of the embodiment of. FIG. 1 taken along lines 2-2;
  • FIG. 3 is a perspective view of a second embodiment.
  • substrate 10 is shown having a network comprising a pluralityof conducting paths 11 formed on one surface thereof.
  • the substrate 10 may be of glass or other suitable vacuum tight ceramic.
  • the conducting paths 11 may be formed on the substrate by conventional graphic arts techniques.
  • One suitable technique is to silk screen a metallic gold luster on to the substrate and then heat the substrate to bond the gold thereto.
  • transparent conducting paths may be formed by spraying a stannic chloride solution onto a hot glass substrate. The excess conductor is then removed by protecting the conducting paths with a stencil while sandblasting the exposed surface.
  • Apertured insulating layer 12 is formed on the substrate overlying the inner portion of the conducting paths.
  • This layer may advantageously be applied by spraying a layer of glass frit on the substrate, removing the frit at selected locations to form apertures 13 and heating .the assembly to glaze the frit.
  • the apertures 13 are located in registration with a corresponding conducting path.
  • the insulating layer may be either opaque or transparent and in practice, the use of a black glass frit has been found to provide increased contrast between the glow discharge and the background.
  • the insulating layer need not be uniform in thickness so that increasing the thickness of the central portion of the layer can be used to increase the angle at which the display device can be viewed.
  • the final segmented electrode pattern comprising segments 14 and 15, herein termed the cathode and anode segments respectively, is then applied over the insulating layer 12.
  • the particular electrode pattern shown is a figure-eight containing segments 14 with segments 15 centrally located therein.
  • One method of applying the electrode pattern is to first mask the surface and then deposit evaporated aluminum thereon. It will be noted that many other methods, such as metal spray or electroless plating, may be employed. The particular pattern applied depends on the application mask.
  • Each segment of the electrode pattern includes at least one aperture. During the application of these segments to the insulating layer, a portion of the metal deposited enters the apertures to provide the electrical connection between a segment and a corresponding conducting path. This is shown in FIG. 2 wherein the apertures 13 are filled with the metal deposited to form the electrode pattern.
  • An envelope 16 is hermetically mountedon insulating layer 12.
  • the envelope may be formed of glass and sealed to the layer, 12 by a glass solder.
  • the envelope is evacuated of air and filled with an ionizable gas suitable for supporting a glow discharge, for example, argon or neon at a pressure of about 30 mm. of Hg at room temperatures.
  • the conducting paths 11 are carried to the edge of substrate and may be plugged into printed circuit board connector 17 having a number of spring clips 18 thereon. As shown in FIG. 1, anode segments are coupled through their corresponding apertures to a common conducting path 11 and to spring clip 18' while each cathode segment 14 is coupled to an individual conducting path and spring clip.
  • the application of a voltage of the order of 150 volts D.C. between conducting paths connected to selected cathode segments and conducting path 11, having a polarity such that the selectedsegments are cathodic with respect to the ionizable gas results in a glow discharge of the gas. This glow discharge occurs on the surface of the selected cathode segments so that selecting different segments permits different characters to be displayed.
  • anode segments 15 are connected. to ground at spring clip 18' while the cathode segments are connected to one end of decoding matrix 30.
  • the other end of matrix 30 is connected through selector switch 31 to negative DC. voltage source 32.
  • the decoding matrix is of conventional design with the position of the selector switch determining which of the outputs and the corresponding conducting paths are energized. Since the voltage required to sustain a glow discharge is less than the voltage required to' initiate it, the decoding matrix should provide equal current limit ing resistances for each output. Alternatively, a separate current limiting resistor may be connected in series with each spring clip 18.
  • the present invention may be constructed so as to display several characters on each surface of the substrate. This is shown in the embodiment of FIG. 3 wherein a single substrate is utilized to form a display device for displaying two characters on each broad area surface of the substrate.
  • Conducting paths 21 are formed on each side of substrate 20 and comprise four networks of the conducting paths 11 shown in FIG. 1.
  • the conducting paths 21 are covered by a pair of insulating layers 22 having apertures 23 therein. The apertures register with a corresponding conducting path.
  • a pair of segmented electrode patterns comprising cathode segments 24 and anode segments 25 is formed on each of the insulating layers 22. Each segment is coupled to a conducting path through a corresponding aperture.
  • An envelope 26 is hermetically mounted on each insulating layer 22 and is filled with an ionizable gas having a pressure capable of sustaining a glow discharge therein.
  • the application of a voltage between selected cathode segments of each pattern and their respective anode seg-, ments provides a display of two characters on each side of the substrate.
  • the substrate is shown relatively thin, other substrate geometries may be employed with different electrode patterns being formed on one or a plurality of the surfaces thereof. While the above description refers to specific embodiments, it is understood that many modifications and variations may be made therein without departing from the spirit and scope of the invention.
  • a display device of the type wherein a glow discharge of a confined ionizable gas is used to display information which comprises (a) a substrate,
  • a display device of the type wherein a glow discharge of a confined ionizable gas is used to display information which comprises (a) a substrate,
  • envelope means mounted on said insulating layer for containing said ionizable gas, the application of a voltage between conducting paths connected to selected segments and at least one conducting path connected to an unselected segment of said electrode patterns resulting in a glow discharge along the surface of the selected segments.
  • a display device of the type wherein a glow discharge of a confined ionizable gas is used to display information which comprises (a) a substrate,
  • anode electrode means formed on said insulating layer and extending through at least one aperture to said conducting paths
  • a display device of the type wherein a glow discharge of a confined ionizable gas is used to display information which comprises (a) a substrate,

Description

June 20, 16? R BOvVERMAN 3,327,154
TPOIJE PATTERN IONIZABLE GAS DISPLAY DEVICE WITH SEGMENTED ELEC Filed March 24, 1965 o I 2 3 4 5 s 7 a 9 DECODING MATRIX INVENTOR. EDWIN R. BOWERMAN TORNE Y.
United States Patent corporation of Delaware Filed Mar. 24, 1965, Ser. No. 442,377 5 Ciaims. (Cl. 313-1095) This invention relates to display devices and more particularly to a glow discharge display device.
A glow discharge display device is generally comprised of a transparent envelope which contains an anode electrode, a number of cathode electrodes, and an ionizable gas capable of supporting a glow discharge. The application of a suitable D.C. voltage between the anode electrode and a selected cathode electrode results in the breakdown of the gas and current fiow through the gas from the cathode to the anode. This breakdown of the gas is characterized by a glow at the surface of the selected cathode.
The shape of the cathode elements determines the pattern of the glow discharge of the gas and many difierent alpha-numeric cathode configurations have been employed. One particularly useful configuration is a segmented cathode having a figure-eight shape and comprising seven substantially equal segments. The anode electrode may be formed in the two central portions of the figure-eight or a wire mesh screen may be spaced from the entire pattern. By applying the DC. voltage between the anode and selected cathode segments, the glow discharge depicts any numeral from 1 to 0. In addition, other configurations have been employed to permit the representation of any desired letter and/ or numeral.
In the construction of display devices of this type the segments of the cathode electrode are generally formed by engraving or other graphic arts techniques and are mounted on a mica insulator. The cathode segments are provided with lugs which extend through the insulator and serve to position and lock the segments in place.
A common anode may be provided by a wire mesh screen which is assembled over the cathode segments and is locked in place to the mica insulator. The assembly is then provided with a supporting base and gas-containing envelope. The electrical connections within the display device are provided by wiring each cathode electrode segment to an external pin connector. The wire used must be insulated to prevent any glow discharge from occurring thereat.
The display device construction is found to have certain disadvantages. These disadvantagesarise from the fact that each cathode segment must be supported on the insulator by mounting lugs and then individually wired to an external pin connector on the envelope base. Since the number of cathode segments may be thirteen or greater for alpha-numeric cathode electrodes, the mounting and wiring steps performed during assembly have resulted in an increase in cost, complexity and size of the manufactured display device.
Accordingly, an object of the present invention is the provision of a glow discharge display device wherein the segmented cathode electrode and the electrical connections thereto are formed on One side of a suitable substrate.
Another object is to provide a glow discharge display device wherein the cathode electrode and the electrical connections to the segments thereof may be formed by graphic arts techniques on a glass substrate.
A further object is to provide a glow discharge display device in which a cathode pattern and corresponding glow discharge may be formed on more than one surface of the substrate. I
In accordance with the present invention, a display device of the glow discharge type is provided in which a plurality of conducting paths are formed on one surface of a substrate. Over-lying a portion of the conducting paths is an insulating layer, which may be a glass frit suitably glazed. The insulating layer is provided with a plurality of apertures extending therethrough. Each of the apertures in the insulating layer is positioned to register with one of the conducting paths formed on the glass substrate.
A segmented electrode pattern is then formed on the insulating layer with each segment being formed about at least one of the apertures in the insulating layer. Each segment is electrically connected through an aperture to a conducting path. The connections may be readily attained through the use of evaporation or metal spray techniques in forming the electrode pattern.
The electrode pattern is then covered by an envelope containing an ionizable gas having a pressure capable of sustaining a glow discharge. The envelope is hermetically bonded to the insulating layer. By applying a suitable DC. voltage between conducting paths connected to selected segments in the electrode pattern and at least one conducting path coupled to an unselected segment of said electrode pattern which renders the selected segments cathodic, a glow discharge is provided along the surface of the selected cathode segments.
The display device is formed entirely on one side of the substrate so that no connecting holes need be formed in the substrate. As a result, inexpensive substrate materials, such as sheet glass, wherein it is generally difiicult to form holes, may be readily employed.
A further advantage is realized in the afore-discussed construction in that restricting the graphic arts techniques to one surface of the substrate permits similar operations to be concurrently performed on more than one surface of the substrate. Thus, a display device may be formed on each of the opposing broad-area surfaces of a relatively thin substrate. In addition, a plurality of display devices may be formed on each surface of a large-area substrate with a single gas-filled envelope provided on each surface.
Further features and advantages of the invention will become more readily apparent from the following description of specific embodiments when viewed in conjunction with the accompany drawings, in which FIG. 1 is an exploded view of one embodiment of the invention;
FIG. 2 is a side view in section of the embodiment of. FIG. 1 taken along lines 2-2; and
FIG. 3 is a perspective view of a second embodiment.
Referring to the display device of FIGS. 1 and 2, substrate 10 is shown having a network comprising a pluralityof conducting paths 11 formed on one surface thereof. The substrate 10 may be of glass or other suitable vacuum tight ceramic.
The conducting paths 11 may be formed on the substrate by conventional graphic arts techniques. One suitable technique is to silk screen a metallic gold luster on to the substrate and then heat the substrate to bond the gold thereto. Also, transparent conducting paths may be formed by spraying a stannic chloride solution onto a hot glass substrate. The excess conductor is then removed by protecting the conducting paths with a stencil while sandblasting the exposed surface.
Apertured insulating layer 12 is formed on the substrate overlying the inner portion of the conducting paths. This layer may advantageously be applied by spraying a layer of glass frit on the substrate, removing the frit at selected locations to form apertures 13 and heating .the assembly to glaze the frit. The apertures 13 are located in registration with a corresponding conducting path. The insulating layer may be either opaque or transparent and in practice, the use of a black glass frit has been found to provide increased contrast between the glow discharge and the background. In addition, the insulating layer need not be uniform in thickness so that increasing the thickness of the central portion of the layer can be used to increase the angle at which the display device can be viewed.
The final segmented electrode pattern comprising segments 14 and 15, herein termed the cathode and anode segments respectively, is then applied over the insulating layer 12. The particular electrode pattern shown is a figure-eight containing segments 14 with segments 15 centrally located therein. One method of applying the electrode pattern is to first mask the surface and then deposit evaporated aluminum thereon. It will be noted that many other methods, such as metal spray or electroless plating, may be employed. The particular pattern applied depends on the application mask.
Each segment of the electrode pattern includes at least one aperture. During the application of these segments to the insulating layer, a portion of the metal deposited enters the apertures to provide the electrical connection between a segment and a corresponding conducting path. This is shown in FIG. 2 wherein the apertures 13 are filled with the metal deposited to form the electrode pattern.
An envelope 16 is hermetically mountedon insulating layer 12. The envelope may be formed of glass and sealed to the layer, 12 by a glass solder. The envelope is evacuated of air and filled with an ionizable gas suitable for supporting a glow discharge, for example, argon or neon at a pressure of about 30 mm. of Hg at room temperatures.
The conducting paths 11 are carried to the edge of substrate and may be plugged into printed circuit board connector 17 having a number of spring clips 18 thereon. As shown in FIG. 1, anode segments are coupled through their corresponding apertures to a common conducting path 11 and to spring clip 18' while each cathode segment 14 is coupled to an individual conducting path and spring clip. The application of a voltage of the order of 150 volts D.C. between conducting paths connected to selected cathode segments and conducting path 11, having a polarity such that the selectedsegments are cathodic with respect to the ionizable gas, results in a glow discharge of the gas. This glow discharge occurs on the surface of the selected cathode segments so that selecting different segments permits different characters to be displayed. To this end, anode segments 15 are connected. to ground at spring clip 18' while the cathode segments are connected to one end of decoding matrix 30. The other end of matrix 30 is connected through selector switch 31 to negative DC. voltage source 32. The decoding matrix is of conventional design with the position of the selector switch determining which of the outputs and the corresponding conducting paths are energized. Since the voltage required to sustain a glow discharge is less than the voltage required to' initiate it, the decoding matrix should provide equal current limit ing resistances for each output. Alternatively, a separate current limiting resistor may be connected in series with each spring clip 18.
While the above description refers to an embodiment which displays one character, the present invention may be constructed so as to display several characters on each surface of the substrate. This is shown in the embodiment of FIG. 3 wherein a single substrate is utilized to form a display device for displaying two characters on each broad area surface of the substrate.
Conducting paths 21 are formed on each side of substrate 20 and comprise four networks of the conducting paths 11 shown in FIG. 1. The conducting paths 21 are covered by a pair of insulating layers 22 having apertures 23 therein. The apertures register with a corresponding conducting path.
A pair of segmented electrode patterns comprising cathode segments 24 and anode segments 25 is formed on each of the insulating layers 22. Each segment is coupled to a conducting path through a corresponding aperture.
An envelope 26 is hermetically mounted on each insulating layer 22 and is filled with an ionizable gas having a pressure capable of sustaining a glow discharge therein. The application of a voltage between selected cathode segments of each pattern and their respective anode seg-, ments provides a display of two characters on each side of the substrate.
' Although the substrate is shown relatively thin, other substrate geometries may be employed with different electrode patterns being formed on one or a plurality of the surfaces thereof. While the above description refers to specific embodiments, it is understood that many modifications and variations may be made therein without departing from the spirit and scope of the invention.
What isclaimed is:
1. A display device of the type wherein a glow discharge of a confined ionizable gas is used to display information which comprises (a) a substrate,
(b) a plurality of conducting paths formed on at least one surface of said substrate,
(c) an insulating layer formed on said surface of the substrate and overlying a portion of said conducting paths, said insulating layer having a number of apertures therein in registration with said conducting i paths, at least one aperture being in registration with each of said conducting paths,
((1) a segmented electrode pattern formed on said insulating layer and extending through said apertures to said conducting paths, and
(e) an envelope mounted on said insulating layer for containing said ionizable gas, the application of a voltage between conducting paths connected to selected segments and at least one conducting path connected to an unselected segment of said electrode pattern resulting in a glow discharge along the surface of the selected segments.
2. A display device of the type wherein a glow discharge of a confined ionizable gas is used to display information which comprises (a) a substrate,
(b) a plurality of conducting path networks formed on at least one surface of said substrate,
(c) an insulating layer formed on said surface of the substrate and overlying a portion of said conducting paths, said insulating layer having a number of apertures therein in registration with said conducting 1 paths, at least one aperture being in registration with each of said conducting paths,
((1) a plurality of segmented electrode patterns formed on said insulating layer and extending through said apertures to said conducting paths, and
(e) an envelope mounted on said insulating layer for containing said ionizable gas, the application of a voltage between conducting paths connected to selected segments and at least one conducting path connected to an unselected segment of said elect-rode patterns resulting in a glow discharge along the surface of the selected segments.
3. A display device of the type wherein a glow discharge of a confined ionizable gas is used to display in-.
formation which comprises (a) a substrate, (b) a plurality of conducting path networks formed on the surfaces of said substrate, (c) an insulating layer formed on said substrate and overlying a portion of said conducting paths, said insulating layer having a number of apertures therein in registration with said conducting paths, at least one aperture being in registration with each of said conducting paths,
(d) a plurality of segmented electrode patterns formed on said insulating layer and extending through said apertures to said conducting paths, and
(e) envelope means mounted on said insulating layer for containing said ionizable gas, the application of a voltage between conducting paths connected to selected segments and at least one conducting path connected to an unselected segment of said electrode patterns resulting in a glow discharge along the surface of the selected segments.
4. A display device of the type wherein a glow discharge of a confined ionizable gas is used to display information which comprises (a) a substrate,
(b) a plurality of conducting paths formed on said substrate,
(c) an insulating layer formed on said substrate and overlying a portion of said conducting paths, said insulating layer having a number of apertures therein in registration with said conducting paths, at least one aperture being in registration with each of said conducting paths,
(d) a segmented cathode electrode pattern formed on said insulating layer and extending through said apertures to said conducting paths,
(e) anode electrode means formed on said insulating layer and extending through at least one aperture to said conducting paths, and
(f) an envelope mounted on said insulating layer for containing said ionizable gas, the application of a voltage between conducting paths connected to selected segments and at least one conducting path connected to said anode electrode means resulting in a glow discharge along the surface of the selected segments.
6 5. A display device of the type wherein a glow discharge of a confined ionizable gas is used to display information which comprises (a) a substrate,
(b) a plurality of conducting paths formed on said substrate,
(c) an insulating layer formed on said substrate and overlying a portion of said conducting paths, said insulating layer having a number of apertures therein in registration with said conducting paths, at least one aperture being in registration with each of said conducting paths,
(d) a segmented electrode pattern formed on said insulating layer and extending through said apertures to said conducting paths,
(e) an envelope mounted on said insulating layer for containing said ionizable gas,
(f) connecting means for receiving said substrate therein and contacting said conducting paths on said substrate, and
(g) means connected to said connecting means for applying a voltage between conducting paths connected to selected segments and at least one conducting path connected to an unselected segment of said electrode pattern so that a glow discharge occurs along the surface of the selected segments.
References Cited UNITED STATES PATENTS 3,219,865 11/1965 Vodicka 313108 3,231,776 1/1966 Britnell 313109.5 3,262,010 7/1966 Kazan 313109.5
JAMES W. LAWRENCE, Primary Examiner. R. JUDD, Assistant Examiner.

Claims (1)

1. A DISPLAY DEVICE OF THE TYPE WHEREIN A GLOW DISCHARGE OF A CONFINED IONIZABLE GAS IS USED TO DISPLAY INFORMATION WHICH COMPRISES (A) A SUBSTRATE, (B) A PLURALITY OF CONDUCTING PATHS FORMED ON AT LEAST ONE SURFACE OF SAID SUBSTRATE, (C) AN INSULATING LAYER FORMED ON SAID SURFACE OF THE SUBSTRATE AND OVERLYING A PORTION OF SAID CONDUCTING PATHS, SAID INSULATING LAYER HAVING A NUMBER OF APERTURES THEREIN IN REGISTRATION WITH SAID CONDUCTING PATHS, AT LEAST ONE APERTURE BEING IN REGISTRATION WTH EACH OF SAID CONDUCTING PATHS, (D) A SEGMENTED ELECTRODE PATTERN FORMED ON SAID INSULATING LAYER AND EXTENDING THROUGH SAID APERTURES TO SAID CONDUCTING PATHS, AND (E) AN ENVELOPE MOUNTED ON SAID INSULATING LAYER FOR CONTAINING SAID INONIZABLE GAS, THE APPLICATION OF A VOLTAGE BETWEEN CONDUCTING PATHS CONNECTED TO SELECTED SEGMENTS AND AT LEAST ONE CONDUCTING PATH CONNECTED TO AN UNSELECTED SEGMENT OF SAID ELECTRODE PATTERN RESULTING IN A GLOW DISCHARGE ALONG THE SURFACE OF THE SELECTED SEGMENTS.
US442377A 1965-03-24 1965-03-24 Ionizable gas display device with segmented electrode pattern Expired - Lifetime US3327154A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US442377A US3327154A (en) 1965-03-24 1965-03-24 Ionizable gas display device with segmented electrode pattern

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US442377A US3327154A (en) 1965-03-24 1965-03-24 Ionizable gas display device with segmented electrode pattern

Publications (1)

Publication Number Publication Date
US3327154A true US3327154A (en) 1967-06-20

Family

ID=23756578

Family Applications (1)

Application Number Title Priority Date Filing Date
US442377A Expired - Lifetime US3327154A (en) 1965-03-24 1965-03-24 Ionizable gas display device with segmented electrode pattern

Country Status (1)

Country Link
US (1) US3327154A (en)

Cited By (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3418509A (en) * 1965-07-03 1968-12-24 Philips Corp Electrical discharge character indicator tube
US3512028A (en) * 1968-02-28 1970-05-12 Joseph T Mcnaney Indicating device of the gaseous glow type
DE1764623A1 (en) * 1967-07-07 1971-09-09 Sony Corp Glass glow indicator tubes and process for their manufacture
US3604971A (en) * 1969-07-30 1971-09-14 Singer Co Filament mounting structure for display device
US3614773A (en) * 1969-06-30 1971-10-19 Gordon Eng Co Indicator glow tube
US3638033A (en) * 1970-05-11 1972-01-25 Sylvania Electric Prod Display device and electrical conductors therefor
DE2135375A1 (en) * 1970-07-20 1972-01-27 Ncr Co Plasma screen
DE2138571A1 (en) * 1970-08-06 1972-02-17 Burroughs Corp Multi-digit display board
DE2145223A1 (en) * 1970-09-11 1972-03-16 Sony Corp Display tube and method of manufacture
US3675065A (en) * 1970-01-23 1972-07-04 Sperry Rand Corp Planar gas discharge indicator
DE2212758A1 (en) * 1971-03-20 1972-09-21 Sony Corp Indicator tubes
JPS4735758U (en) * 1971-05-08 1972-12-20
US3725713A (en) * 1972-01-10 1973-04-03 Burroughs Corp Multi-position gaseous discharge display panel
DE2248608A1 (en) * 1971-10-15 1973-04-26 Fujitsu Ltd DISCHARGE PLASMA DISPLAY PANEL
JPS4837068A (en) * 1971-09-13 1973-05-31
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
JPS4850672A (en) * 1971-10-25 1973-07-17
JPS4895561U (en) * 1972-02-17 1973-11-14
JPS4898772A (en) * 1972-03-28 1973-12-14
JPS4917171A (en) * 1972-05-23 1974-02-15
US3800178A (en) * 1972-06-14 1974-03-26 Rca Corp Multi-indicia display device
JPS4936269A (en) * 1972-08-04 1974-04-04
JPS4936266A (en) * 1972-08-04 1974-04-04
US3806752A (en) * 1968-07-05 1974-04-23 Sperry Rand Corp Planar raised cathode alpha-numeric gas discharge indicator
US3811060A (en) * 1971-09-11 1974-05-14 Ushio Electric Inc Gaseous electrode segment type display device
JPS4992771U (en) * 1972-12-05 1974-08-10
JPS49108968A (en) * 1973-02-19 1974-10-16
US3849694A (en) * 1972-01-14 1974-11-19 Burroughs Corp Multiple position display panel having spurious glow suppressor
US3855500A (en) * 1970-09-01 1974-12-17 Sony Corp Gaseous glow-discharge indicator system
US3868535A (en) * 1971-08-23 1975-02-25 Burroughs Corp Multi-position character display panel
JPS5068689A (en) * 1973-10-19 1975-06-09
JPS5068688A (en) * 1973-10-19 1975-06-09
JPS5068686A (en) * 1973-10-19 1975-06-09
US3903448A (en) * 1971-10-12 1975-09-02 Burroughs Corp Multiple character flat panel display device
JPS50111986A (en) * 1974-11-30 1975-09-03
US3914643A (en) * 1972-12-18 1975-10-21 Burroughs Corp Multi-segment display panel with anode groups
US3917972A (en) * 1970-09-11 1975-11-04 Sony Corp Multi-position indicator display tube
US3944868A (en) * 1974-07-30 1976-03-16 Panel Technology, Inc. Segmented gas discharge display panel device
US3952223A (en) * 1973-08-24 1976-04-20 Burroughs Corporation Multiple character flat panel display device
US3979623A (en) * 1970-09-11 1976-09-07 Sony Corporation Indicator display tube
JPS51128464U (en) * 1975-04-15 1976-10-16
JPS5272160A (en) * 1975-12-12 1977-06-16 Dainippon Printing Co Ltd Multiidigit fluorescent display unit
JPS5380366U (en) * 1977-12-02 1978-07-04
US4103206A (en) * 1975-05-08 1978-07-25 Futaba Denshi Kogyo K. K. Flat type multi-digit indicating apparatus
US4121135A (en) * 1976-12-20 1978-10-17 The Magnavox Company Apparatus for interfacing with plasma type display panels
US4254361A (en) * 1975-03-03 1981-03-03 Burroughs Corporation Multi-digit display apparatus
US4259613A (en) * 1978-01-11 1981-03-31 Wagner Electric Corporation Fluorescent indicator and method of making same
WO1983002360A1 (en) * 1981-12-30 1983-07-07 Burroughs Corp Double-sided gas display panel
US4506261A (en) * 1982-06-28 1985-03-19 Ncr Corporation Integrated gas discharge display panel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3219865A (en) * 1963-05-01 1965-11-23 Gen Electric Electroluminescent display device with selected indicia
US3231776A (en) * 1962-09-28 1966-01-25 Sylvania Electric Prod Display device
US3262010A (en) * 1960-08-31 1966-07-19 Hughes Aircraft Co Electrical display apparatus incorpolrating electroluminescent and gas discharge devices

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3262010A (en) * 1960-08-31 1966-07-19 Hughes Aircraft Co Electrical display apparatus incorpolrating electroluminescent and gas discharge devices
US3231776A (en) * 1962-09-28 1966-01-25 Sylvania Electric Prod Display device
US3219865A (en) * 1963-05-01 1965-11-23 Gen Electric Electroluminescent display device with selected indicia

Cited By (61)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3418509A (en) * 1965-07-03 1968-12-24 Philips Corp Electrical discharge character indicator tube
US3747175A (en) * 1967-07-07 1973-07-24 Sony Corp Gaseous glow indicator tube formed on a substrate with a plurality of insulating layers
DE1764623A1 (en) * 1967-07-07 1971-09-09 Sony Corp Glass glow indicator tubes and process for their manufacture
US3512028A (en) * 1968-02-28 1970-05-12 Joseph T Mcnaney Indicating device of the gaseous glow type
US3806752A (en) * 1968-07-05 1974-04-23 Sperry Rand Corp Planar raised cathode alpha-numeric gas discharge indicator
US3614773A (en) * 1969-06-30 1971-10-19 Gordon Eng Co Indicator glow tube
US3604971A (en) * 1969-07-30 1971-09-14 Singer Co Filament mounting structure for display device
US3675065A (en) * 1970-01-23 1972-07-04 Sperry Rand Corp Planar gas discharge indicator
US3638033A (en) * 1970-05-11 1972-01-25 Sylvania Electric Prod Display device and electrical conductors therefor
DE2135375A1 (en) * 1970-07-20 1972-01-27 Ncr Co Plasma screen
DE2138571A1 (en) * 1970-08-06 1972-02-17 Burroughs Corp Multi-digit display board
US3855500A (en) * 1970-09-01 1974-12-17 Sony Corp Gaseous glow-discharge indicator system
US3917972A (en) * 1970-09-11 1975-11-04 Sony Corp Multi-position indicator display tube
DE2145223A1 (en) * 1970-09-11 1972-03-16 Sony Corp Display tube and method of manufacture
US3979623A (en) * 1970-09-11 1976-09-07 Sony Corporation 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
JPS5126031B1 (en) * 1970-09-18 1976-08-04
DE2212758A1 (en) * 1971-03-20 1972-09-21 Sony Corp Indicator tubes
US3906287A (en) * 1971-03-20 1975-09-16 Sony Corp Indicator display tube having predetermined spacing between base plate and cover
JPS4735758U (en) * 1971-05-08 1972-12-20
US3868535A (en) * 1971-08-23 1975-02-25 Burroughs Corp Multi-position character display panel
US3811060A (en) * 1971-09-11 1974-05-14 Ushio Electric Inc Gaseous electrode segment type display device
JPS4837068A (en) * 1971-09-13 1973-05-31
US3903448A (en) * 1971-10-12 1975-09-02 Burroughs Corp Multiple character flat panel display device
DE2265577C2 (en) * 1971-10-15 1983-11-10 Fujitsu Ltd., Kawasaki, Kanagawa Gas discharge indicator
DE2248608A1 (en) * 1971-10-15 1973-04-26 Fujitsu Ltd DISCHARGE PLASMA DISPLAY PANEL
US3811061A (en) * 1971-10-15 1974-05-14 Fujitsu Ltd Plane surface discharge plasma display panel
JPS4850672A (en) * 1971-10-25 1973-07-17
US3725713A (en) * 1972-01-10 1973-04-03 Burroughs Corp Multi-position gaseous discharge display panel
US3849694A (en) * 1972-01-14 1974-11-19 Burroughs Corp Multiple position display panel having spurious glow suppressor
JPS4895561U (en) * 1972-02-17 1973-11-14
JPS5341951B2 (en) * 1972-03-28 1978-11-08
JPS4898772A (en) * 1972-03-28 1973-12-14
US3864593A (en) * 1972-05-23 1975-02-04 Ise Electronics Corp Flat fluorescent letter display tubes
JPS4917171A (en) * 1972-05-23 1974-02-15
JPS566102B2 (en) * 1972-05-23 1981-02-09
US3800178A (en) * 1972-06-14 1974-03-26 Rca Corp Multi-indicia display device
JPS4936266A (en) * 1972-08-04 1974-04-04
JPS4936269A (en) * 1972-08-04 1974-04-04
JPS4992771U (en) * 1972-12-05 1974-08-10
US3914643A (en) * 1972-12-18 1975-10-21 Burroughs Corp Multi-segment display panel with anode groups
JPS49108968A (en) * 1973-02-19 1974-10-16
JPS5721825B2 (en) * 1973-02-19 1982-05-10
US3952223A (en) * 1973-08-24 1976-04-20 Burroughs Corporation Multiple character flat panel display device
JPS5528072B2 (en) * 1973-10-19 1980-07-25
JPS5068689A (en) * 1973-10-19 1975-06-09
JPS5068688A (en) * 1973-10-19 1975-06-09
JPS5068686A (en) * 1973-10-19 1975-06-09
US3944868A (en) * 1974-07-30 1976-03-16 Panel Technology, Inc. Segmented gas discharge display panel device
JPS50111986A (en) * 1974-11-30 1975-09-03
JPS5530654B2 (en) * 1974-11-30 1980-08-12
US4254361A (en) * 1975-03-03 1981-03-03 Burroughs Corporation Multi-digit display apparatus
JPS51128464U (en) * 1975-04-15 1976-10-16
US4103206A (en) * 1975-05-08 1978-07-25 Futaba Denshi Kogyo K. K. Flat type multi-digit indicating apparatus
JPS5272160A (en) * 1975-12-12 1977-06-16 Dainippon Printing Co Ltd Multiidigit fluorescent display unit
US4121135A (en) * 1976-12-20 1978-10-17 The Magnavox Company Apparatus for interfacing with plasma type display panels
JPS56536Y2 (en) * 1977-12-02 1981-01-08
JPS5380366U (en) * 1977-12-02 1978-07-04
US4259613A (en) * 1978-01-11 1981-03-31 Wagner Electric Corporation Fluorescent indicator and method of making same
WO1983002360A1 (en) * 1981-12-30 1983-07-07 Burroughs Corp Double-sided gas display panel
US4506261A (en) * 1982-06-28 1985-03-19 Ncr Corporation Integrated gas discharge display panel

Similar Documents

Publication Publication Date Title
US3327154A (en) Ionizable gas display device with segmented electrode pattern
US3742279A (en) Segmented electrode display panel having closed structure
US3260880A (en) Electro-optical indicator devices with multiple anodes for each cell
US3588571A (en) Gaseous glow indicator tube formed on a substrate with a plurality of insulating layers
US3662214A (en) Gas discharge display apparatus utilizing hollow cathode light sources
US3886390A (en) Buttable, gaseous discharge, display panel including electrodes providing a dot matrix display
US3231776A (en) Display device
US3701918A (en) Gaseous-flow, discharge display device with an array of hollow cathodes
US4001629A (en) Segmented gas discharge display panel
US3829734A (en) Glow discharge display device
US3603837A (en) Visual display devices
US4013912A (en) Gas mixture for glow discharge device
US3703657A (en) Variable pattern gaseous display panel having segmented cathode electrodes
US3784862A (en) Method and apparatus for electron tubes
US3280359A (en) Gaseous cold cathode indicator tube having a segmented electrode and an insulating shield plate
US3602756A (en) Gas ionization display device
US3739218A (en) Display panel having metal cell sheet
US3720452A (en) Multi-position character display panel
US3849694A (en) Multiple position display panel having spurious glow suppressor
US3767968A (en) Panel-type display device having display cells and auxiliary cells for operating them
US3849693A (en) Multiple position display panel having segmented electrodes
US3821584A (en) Gas filled display device having mercury inlet shield
US3849686A (en) Plasma display panel comprising a first external electrode for each digit and a second external electrode for each segment
US3872339A (en) Multi-position character display panel
US3725713A (en) Multi-position gaseous discharge display panel