WO2000022643A1 - Dispositif d'imagerie et son procede de production - Google Patents
Dispositif d'imagerie et son procede de production Download PDFInfo
- Publication number
- WO2000022643A1 WO2000022643A1 PCT/JP1999/005636 JP9905636W WO0022643A1 WO 2000022643 A1 WO2000022643 A1 WO 2000022643A1 JP 9905636 W JP9905636 W JP 9905636W WO 0022643 A1 WO0022643 A1 WO 0022643A1
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- Prior art keywords
- wiring
- film
- electrodes
- column
- row
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J31/00—Cathode ray tubes; Electron beam tubes
- H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
- H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
- H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J31/00—Cathode ray tubes; Electron beam tubes
- H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
- H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
- H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
- H01J31/123—Flat display tubes
- H01J31/125—Flat display tubes provided with control means permitting the electron beam to reach selected parts of the screen, e.g. digital selection
- H01J31/127—Flat display tubes provided with control means permitting the electron beam to reach selected parts of the screen, e.g. digital selection using large area or array sources, i.e. essentially a source for each pixel group
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/02—Manufacture of electrodes or electrode systems
- H01J9/022—Manufacture of electrodes or electrode systems of cold cathodes
- H01J9/027—Manufacture of electrodes or electrode systems of cold cathodes of thin film cathodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2201/00—Electrodes common to discharge tubes
- H01J2201/30—Cold cathodes
- H01J2201/316—Cold cathodes having an electric field parallel to the surface thereof, e.g. thin film cathodes
- H01J2201/3165—Surface conduction emission type cathodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2329/00—Electron emission display panels, e.g. field emission display panels
Definitions
- TECHNICAL FIELD A method of manufacturing an image forming apparatus, and an image forming apparatus created by the manufacturing method
- the present invention relates to a method for manufacturing wirings arranged in a matrix and used for an image forming apparatus. Further, the present invention relates to an image forming apparatus formed by the manufacturing method. Background art
- a cold cathode such as a plasma display panel (PDP), a field emission type electron emission device (FE), or a surface conduction type electron emission device is used as an electron source.
- PDP plasma display panel
- FE field emission type electron emission device
- a surface conduction type electron emission device is used as an electron source.
- a flat panel display that emits light by irradiating electrons emitted from a fluorescent substance onto a phosphor.
- the light emission principle is basically the same as that of a cathode ray tube. Therefore, there is a possibility that brightness and contrast can be achieved as equivalent to cathode ray tubes.
- An image display device using a surface conduction electron-emitting device is disclosed in, for example, JP-A-06-342636, JP-A-07-235256, JP-A-08-007745, and JP-A-08-0334110.
- FIGS. 9 and 10 show a schematic configuration of an example of the surface conduction electron-emitting device disclosed in the above publication.
- FIG. 11 shows a schematic configuration diagram of an example of an image display device using the surface conduction electron-emitting device disclosed in the above publication.
- FIG. 9 is a plan view of the surface conduction electron-emitting device
- FIG. 10 is a cross-sectional view of the surface conduction electron-emitting device.
- 101 denotes an insulating substrate
- 104 denotes a conductive film
- 102 and 103 denote electrodes
- 105 denotes an electron emitting portion.
- the electron emission unit 105 has a gap. Then, by applying a voltage between the electrodes 102 and 103, electrons are emitted from the electron emitting portion 105.
- reference numeral 108 denotes a rear plate
- 109 denotes an outer frame
- 110 denotes a face plate.
- the outer frame 109, the rear plate 108, and the face plate 110 are connected to each other with an adhesive such as a low-melting glass frit (not shown) to maintain a vacuum inside the image display device (airtight container). ).
- the substrate 101 is fixed to the rear plate 108.
- NX M surface-conduction electron-emitting devices 113 are formed and arranged (N and M are positive integers of 2 or more, and are appropriately set according to the target number of display images. ).
- the electron-emitting device and the phosphor are arranged to face each other.
- the electron-emitting devices 113 are arranged in a matrix by M column wirings 107 and N row wirings 106. At least, at an intersection of the row wiring and the column wiring, an insulating layer (not shown) for electrically insulating the two wirings from each other is formed.
- a phosphor film 111 made of a phosphor is formed on the lower surface of the face plate 110. Then, a metal back 112 made of A1 or the like is formed on the surface of the fluorescent film 111 on the rear plate 108 side.
- phosphors of three primary colors of red (R), green (G), and blue (B) are separately painted.
- a black body (not shown) is arranged between the phosphors of the respective colors constituting the phosphor film 111.
- the distance between the face plate and the rear plate is shortened, manufacturing is facilitated, and driving of the device is simplified. Therefore, it is desirable to satisfy the following two points.
- At least one cold cathode is assigned to each of the R (red), G (green), and B (blue) phosphors.
- one electron-emitting device is associated with each color phosphor.
- the electrons emitted from the device emit fluorescent light.
- the shape of the beam spot formed on the body is substantially elliptical.
- the term “lateral electron-emitting device” refers to an element in which at least a pair of electrodes is arranged on a substrate, a potential difference is generated between the electrodes, and electrons are emitted from between the pair of electrodes. .
- the electrons emitted from the horizontal electron-emitting device are affected by the electric field caused by the anode (such as the metal back described above) and the electric field generated between the electrodes.
- the place where electrons emitted from the horizontal electron-emitting device reach the anode is a position shifted from directly above the electrodes to the electrode on the high potential side. Further, due to the action of the electric field between the electrodes, the beam spot becomes elliptical as described above. It has a circular (vertical) shape.
- the shape of one pixel composed of phosphors of the three adjacent primary colors is desirable to make as close as possible to a square in order to improve the appearance of a display image and the ease of processing image signals.
- the shape assigned to the phosphor of each color becomes a rectangle as shown in FIG. At its simplest, the ratio of the long side to the short side of the rectangle is 3: 1.
- the pattern of the phosphors of each color is rectangular. This is because, in order to increase the amount of light emitted from the phosphor, it is effective to secure a sufficient area of the phosphor to be irradiated with the electron beam. This is because it is effective.
- the electron-emitting device is, as shown in FIG. It is preferable to be arranged in a region surrounded by wirings (106, 107) orthogonal to each other. For this reason, when the pattern of each color phosphor is rectangular as described above, it is desirable that the area surrounded by the wiring, which is allocated to each element, is also rectangular.
- the wiring interval becomes narrower than the wiring arranged at equal intervals in the long side direction (hereinafter, row wiring).
- row wiring the wiring arranged at equal intervals in the long side direction
- the spacing between column wiring is one third of the spacing between row wiring. Therefore, the required accuracy of the column wiring is higher than that of the row wiring. Further, considering the margin for the accuracy, the allowable width of the wiring is narrower in the column direction wiring than in the row direction wiring.
- the thickness of the wiring cannot be increased, and it is difficult to collectively deposit the wiring material over a large area. Also, when wiring is to be formed by screen printing, the edges tend to be slackened, so that the required pattern cannot be made thicker or wider.
- a base containing a conductive material is applied to the substrate through a gap of 10 gauze (for example, a mesh-like mesh woven with metal wires, etc.). After baking, a desired pattern is formed.
- reference numeral 11 in FIG. 15 denotes an emulsion film having an opening corresponding to the formed pattern. Because of this gauze, the metal wire hinders the passage of the paste, and as a result, the width of the printed wiring becomes thicker or thinner as shown in Fig. 16. .
- the paste is applied onto the substrate while pressing a squeegee against the gauze, pattern misalignment is likely to occur, and it may be difficult to form an accurate pattern.
- a conductive film (104 in FIG. 9) constituting the device must be used. It is preferable to use an inkjet method. Specifically, a liquid (ink) containing a material constituting the conductive film is applied so as to connect the electrodes (102, 103), and is baked to form the conductive film 104. To form Then, a current is caused to flow through the conductive film 104 through the electrodes 102 and 103 to form a gap in a part of the conductive film. As a result, the electron emission portion 105 Can be formed. However, in the ink jet method, in some rare cases, a shift occurs in the position where the droplet is applied.
- the column-directional wiring closest to the position where the ink (liquid) is to be applied is: In some cases, the applied droplets came into contact and were sucked. This is presumably because the wiring formed by the printing method generally lacks denseness, so that the ink easily penetrates.
- this phenomenon occurs remarkably when the column wiring is formed by a screen printing method.
- the wiring formed by the screen printing method tends to periodically generate a portion having a large width and a portion having a small width. For this reason, if the width of the column wiring at the position closest to the position where the ink is to be applied is increased, the ink is more likely to come into contact with the ink.
- a droplet is sucked into the wiring, in a severe case, a pixel may be missing, which may be a fatal defect as a display.
- even pixel loss does not occur the electron emission characteristics are different, a desired luminance cannot be obtained, and an image having poor uniformity may occur.
- the present invention has been made in view of the above-described problems, and is directed to an image forming apparatus that realizes a high-definition, large-area display image with high uniformity, no pixel loss, low cost, and high definition over a long period of time. It is intended to provide a manufacturing method.
- the method for manufacturing an image forming apparatus according to the present invention includes the following steps.
- a rear plate having a plurality of electron-emitting devices having a first electrode and a second electrode facing each other, and a plurality of column wirings and row wirings connected to the plurality of electron-emitting devices;
- a method for manufacturing an image forming apparatus comprising: a face plate having phosphors of three primary colors disposed opposite to each other;
- the column-directional wiring connects a plurality of the first electrodes in common
- the row direction wiring connects a plurality of the second electrodes in common, and the row direction and the column direction are substantially perpendicular to each other.
- the interval between the row direction wirings is larger than the interval between the column direction wirings, (d) forming an insulating layer between the row-directional wiring and the column-directional wiring at an intersection of the row-directional wiring and the column-directional wiring;
- the step of forming the column-directional wiring includes a step of forming a film having a photosensitive material and a conductive material on the rear plate, a step of irradiating a desired region of the film with light, and a step of patterning the film. And baking the patterned film.
- a relay having a plurality of electron-emitting devices having a first electrode and a second electrode, and a plurality of wirings connected to the plurality of electron-emitting devices;
- a method for manufacturing an image forming apparatus comprising: a face plate having a phosphor;
- FIG. 1 is a diagram showing an example of steps of the production method of the present invention.
- FIG. 2 is a diagram showing another example of the steps of the manufacturing method of the present invention.
- FIG. 3 is a view showing another example of the steps of the production method of the present invention.
- FIG. 4 is a diagram showing another example of the steps of the manufacturing method of the present invention.
- FIG. 5 is a diagram showing another example of the steps of the production method of the present invention.
- FIG. 6 is a process chart of the method of manufacturing a mask and stamping die according to the present invention.
- FIG. 7 is a schematic view of an ink jet type droplet applying apparatus.
- FIG. 8 is a diagram illustrating an example of a manufacturing process of the electron source substrate.
- FIG. 9 is a plan view showing a configuration of a surface conduction electron-emitting device.
- FIG. 10 is a sectional view showing a configuration of a surface conduction electron-emitting device.
- FIG. 11 is a schematic perspective view of the image forming apparatus.
- FIG. 12 is a plan view of a phosphor and a black member used in the present invention.
- FIG. 13 is a plan view of the electron source created by the present invention.
- FIG. 14 is a plan view showing an example of a horizontal FE to which the present invention can be preferably applied.
- FIG. 15 is a schematic diagram of a plate (mask) used for screen printing.
- FIG. 16 is a schematic view of a pattern formed by screen printing.
- FIG. 17 is a perspective view of a flat panel display formed by using the present invention.
- FIG. 18 is a plan view of a phosphor and a black member that can be used in the present invention.
- FIG. 19 is a block diagram of a drive circuit of an image forming apparatus that can be used in the present invention.
- FIG. 20 is a diagram showing another step of producing the electron source substrate of the present invention.
- FIG. 21 is a diagram showing another process for producing the electron source substrate of the present invention.
- Figure 22 is a schematic diagram showing the I-V (current-voltage) characteristics of a horizontal electron-emitting device.
- FIG. 17, FIG. 12, FIG. 13, FIG. Note that members denoted by the same reference numerals in the respective drawings indicate the same members.
- the X direction and And Y direction are common.
- FIG. 17 is a schematic diagram showing the configuration of an image display device (flat panel display) to which the present invention can be preferably applied.
- reference numeral 101 denotes a rear plate
- 109 denotes an outer frame
- 110 denotes a face plate.
- the connecting portions of the outer frame 109, the rear plate 101, and the face plate 110 are sealed with a joining member such as a low melting point glass frit (not shown) to maintain the inside of the image display device in a vacuum. (Airtight container).
- NX ⁇ array of surface conduction electron-emitting devices 113 are formed on the rear plate 101 (N and M are positive integers of 2 or more, depending on the target number of display pixels. It is set appropriately).
- the electron-emitting devices and the phosphors of each color are arranged facing each other in a one-to-one relationship. Since the image display device of the present invention is a color display, one pixel is composed of phosphors of three primary colors. One surface conduction electron-emitting device corresponds to each color phosphor.
- N and M are determined by the display area of the image forming apparatus to be manufactured, the definition of the display image, and the aspect ratio of the display image. For this reason, in this example, N is set to 300 and M is set to 100, but it is not limited to these numbers.
- the elements 113 are arranged in N column-direction wirings 107 arranged in the first direction (X direction) and in the second direction (Y direction).
- the matrix wiring is performed by the M number of row wirings 106 that are provided.
- FIG. 13 is an enlarged schematic view of the column wiring 107, the row wiring 106, and the surface conduction electron-emitting device 113 formed on the rear plate 101.
- FIG. The configuration of the element 113 itself is different from that shown in FIGS. 9 and 10 and that the shape of the conductive film 104 is shown by a unique circular shape when it was formed by an ink jet method. , does not change.
- an insulating layer 114 is formed at least at a portion where the row wiring 106 and the column wiring 107 intersect to electrically insulate both wirings. ing.
- the rear plate 101 may be made of glass with reduced impurity content such as Na, blue plate glass, glass substrate in which blue 2 glass is laminated with Si 2 formed by a sputtering method or the like, and ceramics such as alumina.
- An Si substrate or the like can be used.
- the distance L between the electrodes 102 and 103 can be preferably in the range of several hundred nm to several hundred m, and more preferably in the range of several m to several tens m.
- the length ⁇ 1 of the electrodes 102 and 103 can be in the range of several m to several hundred m in consideration of the resistance value and the electron emission characteristics of the electrodes 102 and 103.
- the thickness d of the electrodes 2 and 3 can be in the range of several tens nm to several meters.
- the electrodes 102 and 103 are provided for ensuring electrical connection between the conductive film 104 and the column wiring 107 and the row wiring 106. This is because even if the conductive film 104 is directly connected to the wirings 106 and 107 to be described later, a sufficient connection may not be obtained due to a difference in the film thickness.
- the conductive film 104 is formed by applying a liquid containing a material constituting the conductive film, described later, between the electrodes 102 and 103 by an ink-jet method and baking the liquid.
- the material constituting the conductive film 104 is a metal such as Pd, Pt, Ru, Ag, Au, Ti, In, Cu, Cr, Fe, Zn, Sn, Ta, W, and Pd. , Si, Ge, and other semiconductors, as well as their oxides, borides, carbides, nitrides, and the like. From the viewpoint of forming, which will be described later, it is particularly preferable to use Pd from the viewpoint of easily adjusting the resistance value by oxidation and reduction.
- the ink jet method is a method in which a heating resistor element is embedded in a nozzle, the liquid is boiled by the heat generated, and a droplet is discharged by the pressure of the bubble (bubble jet (BJ) method), or an electric signal is applied to the piezo element.
- the liquid containing the material that forms the conductive film is discharged by a method (Piezo jet (PJ) method) that excites a change in the volume of the liquid chamber and ejects the droplets, thereby forming a conductive film. Attach to the position you are trying to do.
- PJ piezo jet
- FIG. 7 (a) shows a single nozzle head 21 having a single discharge port (nozzle) 24.
- FIG. 7 (b) shows a multi-nozzle head 21 having a plurality of droplet discharge ports (nozzles) 24.
- a multi-nozzle head is effective because the time required for applying the liquid can be shortened when producing a display in which a plurality of elements need to be formed on a substrate.
- reference numeral 22 denotes a light source or a piezo element
- reference numeral 23 denotes an ink (the above liquid) flow path
- reference numeral 25 denotes an ink (the above liquid) supply unit
- reference numeral 26 denotes an ink (the above liquid) reservoir.
- An ink (liquid) tank is provided apart from the head 21, and the tank and the head 21 are connected by an ink supply unit 25 via a tube.
- liquids that can be used for the ink jet method include, but are not limited to, a liquid in which particles of the above-described materials are dispersed and a solution containing a compound such as a complex of the above-described materials.
- the thickness of the conductive film 104 is appropriately set in consideration of the step coverage of the electrodes 102 and 103, the resistance values of the electrodes 102 and 103, forming conditions described later, and the like. It is preferably in the range of several hundred nm, and more preferably in the range of 1 nm to 50 nm.
- the resistance value R s is a value from 10 2 to 10 7 [ ⁇ ⁇ ].
- the thickness of the electrodes 102 and 103 is designed in consideration of the thickness of the conductive film 104.
- the electrodes 102 and 103 are for securing an electrical connection between a row direction wiring 106 and a column direction wiring 107 to be described later and the conductive film 104.
- the conductive film 104 is a very thin film, if the conductive film 104 is formed before forming the wiring and the electrode, aggregation or the like may occur depending on the firing temperature of the wiring and the electrode. Therefore, the formation of the conductive film is preferably performed after the steps of forming the electrodes 102 and 103 and the wirings 106 and 107.
- the electrodes 102 and 103 are thicker than the conductive film, but are sufficiently thinner than the wirings 106 and 107. Therefore, it is preferable to form the electrodes on the rear plate before forming the wirings.
- the steps of forming the electrodes (102, 103), forming the wirings (106, 107) and the insulating layer (114), and forming the conductive film are as follows. For this reason, it is particularly preferable that the connection between the wiring and the electrode is performed by covering a part of the electrode with the wiring. From the above, from the viewpoint of thickness, the conductive film (104) is the thinnest, followed by the electrodes (102, 103), the column wiring (107), and the row wiring (106).
- the column direction wiring 107 is formed using a photosensitive conductive paste (a photosensitive material and an ink containing a conductive material forming the wiring).
- the column-direction wiring is electrically connected to the element 113 by covering a part of one of the electrodes constituting the element 113.
- the material for the column wiring is not particularly limited as long as it is a conductor, but is preferably a material that is hardly oxidized by heating in the air, and is preferably, for example, Ag, Au, Pt, or the like.
- the form of the insulating layer 114 is comb-shaped in FIG. 13, but is not limited to this form. It may be formed at least at the intersection of the column direction wiring 107 and the row direction wiring 106. Although any method may be used for forming the insulating layer 114, a screen printing method is preferable, and further, exposure, development, It is powerful to form by firing.
- the row-direction wiring 106 is arranged on a comb-shaped insulating layer, and the recess 100 of the insulating layer 114 covers a part of one of the electrodes constituting the element 113. And is electrically connected to the electrodes.
- the material for the row-direction wiring is not particularly limited as long as it is a conductor, but is preferably a material that is hardly oxidized by heating in the air, and is preferably, for example, Ag, Au, Pt, or the like.
- the pitch of the column wiring 107 is set smaller than the pitch of the row wiring 106 in correspondence with the pattern of each color phosphor. Also, the width of the column direction wiring was set smaller than the width of the row direction wiring. Further, the cross-sectional area of the row-directional wiring 106 is larger than the cross-sectional area of the column-directional wiring 107.
- a fluorescent film 111 is formed on the lower surface of the face plate 110. Since the display in the present invention is a single color display, phosphors of three primary colors of red, green, and blue used in the field of CRT are separately applied to the portion of the phosphor film 111. The phosphors of each color are separately painted in a rectangular shape as shown in FIG. 12, for example, and a black member is provided between the phosphors. Here, a black conductor is used as the black member. The purpose of providing the black member is to prevent the display color from being shifted even if the electron irradiation position is slightly shifted, or to prevent the reflection of external light to prevent the display contrast from being lowered. In particular, a conductive black member is preferable since charge-up of the fluorescent film by electrons can be prevented.
- graphite was used as the main component as the conductive black member, but any other material may be used as long as it is suitable for the above purpose.
- the pattern of the phosphor used in the present embodiment is shown in FIG.
- the pattern of each color phosphor is a vertically long pattern (long in the X direction). This is because, as described above, the phosphor pattern of the three primary colors (R, G, B) is used to make the phosphor pattern substantially square, and the beam of a horizontal electron emitting element represented by a surface conduction electron emitting element is used. This is because the beam is used effectively because the spot shape is vertically long.
- the pattern of the black member was formed in a lattice pattern arranged in the X and Y directions, but in addition, it was extended in the X direction as shown in FIG.
- a black member having a phosphor pattern having a different aspect ratio and an aperture pattern having a different aspect ratio may be formed in accordance with the vertically (elliptical) beam emitted from the electron-emitting device.
- the black members in a grid pattern as shown in FIG.
- a metal back 112 known in the field of CRT is provided on the surface of the fluorescent film 111 on the rear plate side.
- the purpose of providing the metal back 112 is to improve the light utilization rate by mirror-reflecting a part of the light emitted from the fluorescent film 111, and to protect the fluorescent film 111 from negative ion collision. Therefore, it serves as an electrode for applying an electron acceleration voltage, and serves as a conductive path for the excited electrons of the phosphor film 111.
- This metal back 111 is formed by forming a fluorescent film 111 on a face plate substrate 110, smoothing the surface of the fluorescent film, and forming an aluminum layer on the surface. (A 1) was formed by a vacuum deposition method. When a phosphor material for low voltage is used for the phosphor film 111, no metal back is used.
- D xl to D xm, D yl to D yn, and H v are air-tightly structured electric connection terminals provided for electrically connecting the image display device to an electric circuit (not shown).
- DX 1 to D xm are electrically connected to the row direction wiring 106 of the multi-electron beam source.
- Dy1 to Dyn are also electrically connected to the column wiring 107 of the multi-electron beam source.
- Hv is electrically connected to the metal back 1 1 2. Inside of the envelope (airtight container) is maintained at a pressure lower than 1 0- 4 P a.
- a spacer 20 for supporting atmospheric pressure resistance is arranged between the face plate 110 and the rear plate 101.
- the distance between the substrate 101 on which the electron-emitting devices 113 are formed and the face plate 110 on which the fluorescent film is formed is maintained at several hundreds of millimeters to several millimeters.
- the inside of 170) is maintained at a high vacuum.
- a voltage is applied to each of the electron-emitting devices 113 through the external terminals Dxl to Dxm, Dyl to Dyn, the row wiring 106, and the column wiring 107. By doing so, electrons are emitted from each element 113.
- a high voltage of several hundred V to several kV is applied to the metal back 1 1 2 through the external terminal Hv. By doing so, the electrons emitted from each element 113 are accelerated and collide with the corresponding color phosphor. As a result, the phosphor is excited and emits light, and an image is displayed.
- a row-direction wiring is sequentially selected one by one (voltage application), and at the same time, a modulation signal for controlling according to an input video signal is applied to the column-direction wiring.
- a modulation signal for controlling according to an input video signal is applied to the column-direction wiring.
- the elements selected at the same time are one element in the column wiring, and up to 30000 elements in the row wiring.
- the reason why the row-directional wiring is used as the wiring to be sequentially selected one row at a time is that a smaller number of wirings can secure a longer selection time.
- a voltage is applied between the electrode 102 and the electrode 103.
- the emission current Ie
- the device current If
- Vi the voltage applied between the electrodes of the surface conduction electron-emitting device.
- I f an ineffective current flows between the electrodes. This tendency is common to horizontal electron-emitting devices.
- V th is a voltage at which the emission current I e starts to be observed.
- the width of the row wiring 106 is increased, the area allocated to the electron-emitting device becomes smaller. Therefore, it is more preferable to increase the thickness of the row-direction wiring. That is, the thickness of the row direction wiring 106 is formed to be thicker than the thickness of the column direction wiring 107.
- the electrons emitted from the horizontal electron-emitting device do not follow the orbit just above the electron-emitting portion as described above. In other words, of the pair of electrodes, it flies off the electrode to which the higher potential is applied.
- the direction in which the pair of electrodes face each other (the Y direction in FIG. 13) is set to the same direction as the longitudinal direction of the thick row wiring 106.
- the electron is shifted so as to fly toward the column wiring 107 which is thinner than the row wiring.
- the display panel 170 corresponds to the aforementioned envelope (see FIG. 17).
- Row direction wiring terminals DX1 to DxM connected to row direction wiring 106 in display panel 170, column direction wiring terminals also connected to column direction wiring 107 of display panel 101 It is connected to an external drive circuit via Dyl to DyN.
- the row-direction wiring terminals D xl to D x M include the multi-electron sources provided in the display panel 1 ⁇ 0, that is, the surface conduction electron-emitting devices wired in a matrix of M rows and N columns.
- a scanning signal for sequentially selecting and driving one row at a time is input from the scanning circuit 102.
- the column-direction wiring terminals Dy1 to DyN are connected to the surface conduction electron-emitting devices of one row selected by the scanning signal applied from the scanning circuit 102 to the row-direction wiring 106.
- a modulation signal is applied to control the emitted electrons according to the input video signal.
- the control circuit 103 has a function of matching the operation timing of each unit so that appropriate display is performed based on a video signal input from the outside.
- the video signal 120 input from the outside may be a case where the image data and the synchronizing signal are combined like an NTSC signal, for example, or a case where the two are separated in advance. Will be described in the latter case.
- a well-known synchronization separation circuit is provided to separate the image data from the synchronization signal T sync, and to convert the image data to the shift register 104 and the synchronization signal to the control circuit. If input is made to 103, it can be handled in the same manner as in the present embodiment.
- control circuit 103 generates each control signal such as a horizontal synchronization signal Tscan, a latch signal Tmry, and a shift signal Tsft for each unit based on the synchronization signal Tsync input from the outside.
- Image data (luminance data) included in the video signal input from the outside is input to the shift register 104.
- the shift register 104 is used for serial-to-parallel conversion of image data input serially in time series in units of one line of an image, and a control signal (shift) input from the control circuit 103 is used. Signal) Synchronizes with Tsft to input and hold image data serially.
- One line of image data (electron-emitting device) converted into parallel signals in the shift register 104 (Corresponding to drive data for N elements) are output to the latch circuit 105 as parallel signals Id1 to IdN.
- the latch circuit 105 is a storage circuit for storing and holding one line of image data only for a required time, and the parallel signals I d1 to I dn according to the control signal Tmry sent from the control circuit 103. Is stored.
- the image data thus stored in the latch circuit 105 is output to the pulse width modulation circuit 106 as parallel signals I'd1 to I'dn.
- the pulse width modulation circuit 106 modulates the pulse width with a constant amplitude (voltage value) according to these parallel signals I'dl to I'dn and according to the image data (I'd1 to I'dn).
- the output voltage signals are output as I "d1 to I" dn.
- the pulse width modulation circuit 106 outputs a voltage pulse having a wider pulse width as the luminance level of the image data increases, for example, 30 seconds for the maximum luminance, and 30 seconds for the minimum luminance. Then, a voltage pulse with an amplitude of 7.5 [V] is output.
- the output signals I "d1 to I" dn are applied to the column wiring terminals Dyl to DyN of the display panel 101.
- a DC voltage Va of, for example, 5 KV is supplied from the acceleration voltage source 109 to the high voltage terminal Hv of the display panel 170.
- This circuit 102 has M switching elements inside, and each switching element selects either the output voltage of the DC voltage source Vx or 0 [V] (ground level), and the display panel It is electrically connected to 170 external terminals Dx1 to DxM. Switching of these switching elements is performed based on a control signal Tscan output from the control circuit 103, but in practice, it can be easily configured by combining switching elements such as FETs. It is.
- the DC voltage source Vx is set to output a constant voltage based on the characteristics of the electron-emitting device so that the drive voltage applied to the unscanned device is equal to or lower than the electron-emitting threshold voltage Vth. It has been done.
- the control circuit 103 has a function of matching the operation of each unit so that appropriate display is performed based on an image signal input from the outside.
- the shift register 104 and the line memory 105 may be of a digital signal type or an analog signal type. That is, the serial no-parallel of the image signal This is because conversion and storage may be performed at a predetermined speed.
- the electron emission is performed. Occurs.
- a high voltage is applied to the metal back 1019 or a transparent electrode (not shown) via the high voltage terminal Hv to accelerate the electron beam.
- the accelerated electrons collide with the fluorescent film 1018, and emit light to form an image.
- the configuration of the image display device described here is an example of an image forming apparatus to which the present invention can be applied, and various modifications can be made based on the concept of the present invention.
- the NTSC system was used as the input signal, the input signal is not limited to this.
- TV signals consisting of a larger number of scanning lines (such as the A4USE system and other high-definition TV) system can also be adopted.
- the horizontal FE shown in FIG. 14 can also be preferably applied.
- a horizontal FE is used, as described above for the pair of electrodes 102, 103 of the surface conduction electron-emitting device, the pair of electrodes of the horizontal FE, ie, the emitter electrode 10007 and the gate electrode 10008, respectively, are described above.
- the direction in which the emitter electrode 10007 and the gate electrode 10008 face each other (Y direction) is the same as the longitudinal direction of the row wiring 106.
- the materials of the electrodes 102 and 103 deposit the materials of the electrodes 102 and 103.
- a deposition method for example, a vacuum deposition technique such as an evaporation method or a sputtering method may be used.
- the deposited electrode material is patterned by using photolithography and etching techniques to form a pair of electrodes 102 and 103 shown in FIG. 8 (a).
- the offset printing method is preferably used in order to easily produce a large area with low cost, high accuracy, and ease. I have.
- a column direction wiring 107 is formed so as to cover a part of the one electrode 103.
- a photosensitive conductive paste (an ink containing at least a photosensitive material and a conductive material forming wiring) is coated on the entire surface of the rear plate 101 on which the electrodes are formed in the step (1). Apply. Subsequently, after the applied paste was dried, the paste was exposed using a mask having an opening of the pattern of the column wiring 107 shown in FIG. 8B. Subsequently, the paste in the non-exposed area was selectively removed (developed) using a solvent or the like. Thereafter, the paste remaining on the rear plate 101 was baked to remove the photosensitive material and unnecessary organic substances, thereby forming the column-directional wiring 107.
- the photosensitive conductive paste is applied to the entire surface of the substrate 101.
- the gap between the electrodes 102 and 103 forming the conductive film 104 will be contaminated. Since the thickness of the conductive film 104 is very small, depending on the material contained in the photosensitive conductive paste, if the material remains in the gap between the electrodes, it may adversely affect the electron emission characteristics, or the electron emission portion 105 In some cases, defects may occur in the manufacturing process (for example, the forming process).
- This problem is not caused only by the difference between the pitches of the column wiring and the row wiring described above, or by the beam shape peculiar to the horizontal electron-emitting device. In other words, this is a problem peculiar to an image forming apparatus using a surface conduction electron-emitting device that requires an extremely thin conductive film between a pair of electrodes.
- the photosensitive conductive paste is passed through an opening of a mask having an opening corresponding to a desired pattern, and the desired jewelry is removed.
- a rough pattern (first pattern) is applied and formed on the rear plate 101 through the opening of the screen plate as shown in Fig. 15, and after drying, exposure and development are performed.
- a desired pattern (second pattern) It should be noted that any other method may be used as long as the first pattern (rough pattern) described above can be formed.
- the above-described contamination of the gap between the electrodes 102 and 103 due to the photosensitive conductive paste can be suppressed, and the expensive photosensitive conductive during development (removal of unnecessary photosensitive conductive paste) can be suppressed.
- the amount of conductive paste to be discarded can be reduced. Therefore, when a wiring for driving a surface conduction electron-emitting device is formed using a photosensitive conductive paste, the wiring is formed at a desired position through an opening of a mask having an opening corresponding to a desired pattern. After applying and drying a photosensitive conductive paste of a desired shape (first pattern), the above-described exposure Z development Z baking is performed to form a finally desired pattern (second pattern). preferable.
- the mold having the first pattern is pressed against the applied photosensitive conductive paste to form a first pattern, dried, and then subjected to exposure Z development / firing. By doing so, it is also possible to form the column direction wiring 107 having a desired pattern (second pattern).
- the photosensitive conductive paste before drying is referred to as a first pattern, but the first pattern in the present invention is a photosensitive pattern formed on the rear plate 101 before development. It refers to the pattern of the conductive paste.
- the first pattern is a pattern that is formed rougher (larger or wider) than the pattern that is ultimately obtained.
- the photosensitive conductive paste has at least an average particle size of 0.1. 55 ⁇ ⁇ m, preferably 0.3 ⁇ 1 of conductive material particles and a photosensitive material, and have fluidity. Ultraviolet light is particularly preferred as light for irradiating the photosensitive conductive paste.
- a photosensitive polymer can be used. More specifically, a photo-insolubilized photosensitive polymer can be used as long as the negative-type photosensitive conductive paste described above is used. On the other hand, if it is a positive type, a photo-solubilizable photosensitive polymer can be used.
- the conductive material for example, metals such as Ag, Au, and Pt, which are preferable as the above-described wiring material, are preferably used, and furthermore, their particles are more preferable.
- an acrylic copolymer having a carboxyl group and an ethylenically unsaturated group in a side chain can be used.
- This material can be produced, for example, by adding an ethylenically unsaturated group to a side chain to an acryl-based copolymer formed by copolymerizing an unsaturated carboxylic acid and an ethylenically unsaturated compound.
- a photoreactive compound, a photopolymerization initiator, a glass frit (glass particles), a metal oxide, a sensitizer, and the like can be added to the photosensitive conductive paste as needed.
- the thermal expansion coefficient between the wiring and the rear plate is made closer, the firing temperature of the paste is adjusted, and the bonding between the metal particles and the rear plate is performed. It is preferable to add a glass frit in order to increase the property.
- the glass frit for example, it can be used S I_ ⁇ 2, Z R_ ⁇ 2, B 2 0 3 and L I_ ⁇ 2 those containing respectively from 1 to 5 0 wt%.
- the glass frit is insulative, it is preferable that the glass frit be 10% by weight or less based on the paste.
- the metal oxide is preferably added because it has an effect as a sintering aid such as suppressing abnormal growth of the particles of the conductive material, but the addition amount is small since it is basically an insulator. Is better.
- an insulating layer 114 is formed at the intersection of the column wiring 107 and the row wiring 106 to be formed in the next step (FIG. 8 (C)).
- the shape of the insulating layer For example, as shown in FIG. 8 (C), if the shape is continuous in the form of a comb tooth, the step in which the row-direction wiring gets over at the intersection with the column-direction wiring (thickness and insulation of the column-direction wiring 107) (Sum of the thicknesses of the layers 114) can be reduced. Furthermore, since a part of the electrode 102 can be covered with the concave portion 100 of the insulating layer 114, the connection with the electrode 102 can be simplified.
- the shape of the insulating layer 114 is not limited to that shown in FIG. 8, but may be discretely formed only at the intersections.
- the method for forming the insulating layer 114 is not particularly limited, but is preferably formed by a screen printing method in order to ensure good insulating properties and to reduce cost.
- the insulating layer 114 since the arrangement position of the insulating layers 114 is required to be precise, it is preferable to form the insulating layer 114 using a photosensitive paste as in the case of the column wiring.
- a photosensitive paste When a photosensitive paste is used, a rough pattern (first pattern) is formed using a screen printing method as in the case of the column-directional wiring, and then exposed and developed to form a desired pattern (second pattern). Is particularly desirable.
- the photosensitive paste used here is insulating, and an insulating material such as glass particles is used instead of the conductive material particles contained in the photosensitive conductive paste.
- the row direction wiring 106 is formed (FIG. 8 (d)).
- the pitch P1 of the row wirings 106 in the present invention is larger than the pitch P2 of the column wirings 107.
- the interval D1 between the row-direction wirings 106 is larger than the interval D2 between the column-direction wirings 107.
- the method for forming the row wirings 106 is not particularly limited, but is preferably formed by screen printing in consideration of low cost.
- the row wirings 106 are also formed using a photosensitive conductive paste similarly to the column wirings.
- a photosensitive conductive paste is used, a rough pattern (first pattern) is formed by using a screen printing method in the same manner as in the case of column-wise wiring, taking into account the above-described contamination of the gap between the electrodes. Thereafter, it is particularly desirable to obtain a desired pattern (second pattern) by exposing and developing.
- the row wiring 106 applies a scanning signal, and therefore is required to have lower resistance than the column wiring. For this reason, in order to increase the definition of the display image, the thickness of the row direction wiring is larger than the thickness of the column direction wiring.
- the row wiring 106 is stacked above the column wiring 107 via the insulating layer 114. . This is because the row-direction wiring 106 and the column-direction wiring 107 and the insulating layer 1 This is because riding over the stack of 14 reduces the possibility of disconnection at the intersection.
- the image forming apparatus is stacked on the column-directional wiring 107 via the insulating layer 114.
- the row wiring 106 has a very large area exposed to the vacuum inside the image forming apparatus.
- a high voltage is applied to an accelerating electrode such as a metal back positioned opposite to the wiring. This exposes the interconnect to very high electric fields. Therefore, it is preferable that the shape of the row direction wiring 106 having a large exposed area is as small as possible.
- the row-direction wiring 106 is selectively coated with a non-photosensitive conductive paste by screen printing and baked, without using a manufacturing method based on exposure and development using a photosensitive conductive paste. It is preferable to form it.
- a conductive film 104 is formed between the electrodes 102 and 103.
- a method for forming the conductive film 104 it is preferable to use an ink jet method which can easily form a large area at low cost. Specifically, a droplet containing the material constituting the above-described conductive film is applied between the electrodes 102 and 103 using the apparatus shown in FIG. The conductive film 104 is formed (FIG. 8 (e);).
- a forming process is performed. An appropriate voltage is applied between each of the electrodes 102 and 103 to cause a current to flow through the conductive film to form a gap in a part of the conductive film. When the activation process described later is not performed, the gap formed by this process and the vicinity thereof form the electron emission portion 105.
- an activation process is preferably performed.
- the activation treatment means that an appropriate voltage is applied between the electrodes 102 and 103 in an atmosphere in which a carbon compound is This is a process for improving characteristics.
- This activation process is a process of depositing carbon or a carbon compound on the substrate 101 inside the gap formed by the above-described forming process and on the conductive film 104 near the gap.
- a second gap is formed by the carbon film formed in the first gap formed in the forming step. Note that the second gap is smaller than the first gap.
- carbon or a carbon compound originating from an organic compound existing in the atmosphere is deposited.
- the rear plate having the surface conduction electron-emitting device (electron source substrate)
- the phosphor is disposed on the face plate substrate 110 as shown in FIG. 12.
- a black member black matrix having a plurality of openings is formed.
- the black member for example, a material containing graphite as a main component is used, but the material is not limited to this.
- the black member was formed in a lattice shape as shown in FIG. 12 using a printing method or a photolithography method.
- the pattern of the black member may be a stripe pattern as shown in FIG.
- the shape of the opening (the area where the phosphor is formed) of the black member is rectangular.
- the pitches of the phosphors of different colors in the Y direction are formed so that the intervals are smaller than the pitches of the phosphors of the same color in the X direction.
- red, blue, and green phosphors are respectively arranged in the predetermined openings of the black member by using a screen printing method or the like.
- a paste obtained by mixing phosphor particles and a resin obtained by dissolving a polymethacrylate, cellulose, or acrylic resin in an organic solvent is applied by a screen printing method or the like, and dried.
- a filming layer is formed on the phosphor and the black member.
- a material for the filming layer for example, a resin obtained by dissolving a polymethacrylate-based, cellulose-based, or acryl-based resin in an organic solvent is applied by a screen printing method or the like, and dried.
- a metal film (A1) is formed on the filming layer by vapor deposition or the like.
- the face plate is heated to remove the resin and the filming layer contained in the phosphor paste, thereby obtaining a face plate on which the phosphor, the black member, and the metal back are formed.
- FIG. 17 a flat panel display using a surface conduction electron-emitting device was formed.
- a method of manufacturing the display of this embodiment will be described with reference to FIGS. 17, 8, 12, and 13.
- FIG. 17 a method of manufacturing the display of this embodiment will be described with reference to FIGS. 17, 8, 12, and 13.
- (1) was prepared rear plate 1 01 that forms the shape of S i 0 2 in a thickness of 0. 5 m to the surface of the soda lime glass by sputtering evening method.
- Pt was used as a material of the electrode.
- the electrodes 102 and 103 were formed by using an offset printing method. Set the distance between electrode 102 and electrode 103 to 20 u m.
- the photosensitive conductive paste used in this example includes spherical Ag particles as a conductive material, an acrylic resin that is a photosensitive material that cures in response to ultraviolet light, and a glass filter. The one with one added was used.
- the photosensitive conductive paste was dried, and the dried photosensitive conductive paste was irradiated (exposed) with ultraviolet rays using a light-shielding mask having a plurality of stripe-shaped openings. Subsequently, the unexposed portion was removed (developed) by washing the rear plate with an organic solvent.
- a paste containing a glass binder and a resin was applied in a comb-like pattern shown in Fig. 8 (c), and baked to form 1,000 insulating layers 114. .
- the spacer 20 is arranged as shown in FIG.
- the spacer is electrically connected to the row wiring 106 and the metal back 112 by making contact with the row wiring. Therefore, when assembling the display, the width of the row wiring 106 is set to be larger than the width of the column wiring 107 in order to obtain a region where the spacer is sufficiently brought into contact.
- a piezo-type ink jet apparatus which is one of the ink-jet methods, was used for applying the ink.
- an aqueous solution containing 0.15% of an organic Pd compound, 15% of isopropyl alcohol, 1% of ethylene dalicol, and 0.05% of polyvinyl alcohol was used as a Pd-containing ink.
- the element after the forming step was subjected to a process called an activation step. After evacuated to 106 P a said chamber in one, benzonitrile 1. 3 X 10 one 4 P a introduction, indicia pressurizing the pulse voltage to each column wiring 107 and the row wiring 106 "active Process ”. Through this step, a carbon film was formed on the conductive film 104 inside and near the gap formed by the above-described forming, and the electron-emitting portion 105 was obtained. In the activation step, a rectangular wave pulse voltage with a pulse peak value of 15 V and a pulse width of lms ec and a pulse interval of 10 ms ec was applied to each element.
- a rear plate on which the electron-emitting devices are arranged was prepared.
- Fig. 13 shows an enlarged part of this.
- the face plate substrate 110 made of the same material as the rear plate was sufficiently washed and dried. Thereafter, a black member having the pattern shown in FIG. 12 was formed on the substrate 110 by using a photolithography method.
- the black member was formed in a lattice shape so as to have openings corresponding to the portions where the phosphors of each color were arranged.
- the pitch of the color members in the Y direction was the same as the pitch of the column wirings, and the pitch in the X direction was formed to be the same as the pitch of the row wirings.
- a filming layer is formed on the black member and the phosphor.
- a material for the filming layer a polymethacrylate resin dissolved in an organic solvent was applied by a screen printing method and dried.
- A1 was formed on the filming layer by an evaporation method.
- the face plate is heated to remove the resin and the filming layer contained in the phosphor paste and obtain a face plate on which the phosphor, the black member, and the metal back are formed.
- a spacer 20 having a high-resistance film on the surface and an outer frame 109 provided with a bonding member in advance are arranged. did. Then, while the face plate and the rear plate were sufficiently aligned, the members were softened by heating and pressing in a vacuum to join the members together. As a result of this sealing step, an envelope (display panel) 170 shown in FIG. 17 was obtained in which the inside was maintained at a high vacuum.
- the high-resistance film provided on the surface of the spacer transfers the electric charge accumulated on the surface of the spacer by irradiating electrons to the surface of the spacer to the row wiring or the metal back. It is to escape.
- the metal back to which the spacer is electrically connected is a very thin film. For this reason, if the phosphor that is an aggregate of particles under the metal back in the portion that comes into contact with the spacer, the electrical connectivity between the spacer and the metal back cannot be sufficiently obtained. However, the phosphor particles and the metal back may peel off due to contact with the spacer, which may cause a discharge between the force source and the anode. For this reason, it is preferable to provide a relatively flat black member having a higher bonding strength with the face plate substrate 110 than the phosphor particles and a relatively flat black member at the contact portion with the spacer. Also increase the contrast From the viewpoint, it is preferable to arrange the black members in a lattice shape.
- the spacer is brought into contact with the row-direction wiring (wiring to which the scanning signal is applied) in order not to interrupt the trajectory of the electron beam emitted from the horizontal electron-emitting device. Another reason is that it is easy to make an alignment with a spacer.
- the display panel 170 obtained as described above was connected to the drive circuit shown in FIG. 19, and a moving image was displayed by line-sequential scanning.
- a scanning signal was applied to the row-direction wiring 106 having a large cross-sectional area, and a modulation signal was applied to the column-direction wiring 107.
- the column-directional wiring 107 is formed using a photosensitive conductive paste, it is possible to suppress the suction of droplets of the precursor of the conductive film 104 applied by the ink jet method, Moreover, it is conceivable that the column-directional wiring could be formed at a very high density.
- the method of forming the column direction wiring 107 of the first embodiment is changed.
- FIG. 1 is a diagram for explaining a process of forming a column-direction wiring pattern according to the first embodiment.
- the photosensitive conductive paste used in the first embodiment is placed on the rear plate 101 having the electrodes 102 and 103 formed in (1) and (2) of the first embodiment.
- a photosensitive conductive paste containing Ag particles similar to the above was coated on the entire surface to a thickness of 20 m.
- the photosensitive conductive paste layer 2 was dried by performing infrared drying at a surface temperature of 100 ° C. for several minutes (FIG. 1 (a)).
- a stamping die 3 having a concave portion with a depth of 15 m is placed on the photosensitive conductive paste layer 2, and the stamping die 3 is exposed to light using a press machine.
- the rough pattern (first pattern) 4 was formed by indenting the conductive paste layer 2.
- the pressing mold may be any shape as long as the paste has a shape that allows the paste to be easily filled into the pressing concave portion when pressed into the paste layer, but the depth of the concave portion is finally obtained. It is preferably higher than the height of the pattern from the substrate.
- the material of the pressing die includes metal, glass, resin and the like.
- UV light of ⁇ 350 nm was exposed under the condition of 25 OmJ per square cm. . Since the photosensitive conductive paste used in this embodiment is of a negative type, the photomask has a pattern for shielding light from the valleys to be removed.
- the amount of paste discarded during the development of the photosensitive conductive paste was minimized as compared with the production method of the first embodiment.
- a pressing die that is used both for pressing the photosensitive conductive paste into the solid film and for masking during exposure is used. Except for this, the column-directional wiring 107 was formed in the same manner as in Example 2.
- FIG. 2 is a diagram for explaining the creation process of the second embodiment.
- the photosensitive conductive paste layer 2 used in Example 1 was entirely coated on the rear plate 101 on which the electrodes 102 and 103 were formed with a thickness of 20 m. (Fig. 2 (a)).
- a rough pattern (first pattern) 4 was formed by using a pressing die 7 having a light shielding pattern 8 and also serving as a mask.
- Example 2 Thereafter, development and baking were performed in the same manner as in Example 2, whereby a column-directional wiring 107 having a predetermined pattern as shown in FIG. 2 (c) could be obtained.
- a thin metal film 22 is formed on a glass substrate 21 by a sputtering method.
- a resist film 23 formed of a solid film by spin coating on the metal film is patterned by photolithography or the like.
- the metal film 22 is etched as shown in FIG. 6 (c).
- the portion where the glass is exposed is etched with hydrofluoric acid or the like to form the concave portion 24 and the convex portion 25, and then the resist 23 is removed to form a pressing die serving as a mask. .
- the metal film left in FIG. 6 (d) functions to block light.
- a fluid in which a pigment was mixed with alcohol was used as a light-shielding fluid as a photomask during exposure. Except for this, the column direction wiring 107 was formed in the same manner as in Example 2.
- FIG. 3 is a diagram for explaining a process of forming the column-directional wiring 107 of this embodiment.
- the photosensitive conductive paste layer 2 used in Example 1 was entirely coated with a thickness of 20 m on the rear plate 101 on which the electrodes 102 and 103 were formed. It was applied (Fig. 3)).
- Example 2 a rough pattern (first pattern) was formed by a pressing die as shown in FIG. 3 (b).
- the pressing mold 3 was removed, and the light-shielding fluid 9 was set in the recess with a doctor blade as shown in FIG. 3 (c).
- the light-shielding fluid was installed so as to cover the ink portion to be removed in the rough pattern.
- the exposure was performed in the state shown in FIG. 3 (c).
- Example 2 Thereafter, development and baking were performed in the same manner as in Example 2, whereby a predetermined column-direction wiring 107 (second pattern) could be obtained as shown in FIG. 3 (d).
- the light-shielding fluid was removed together with the unexposed photosensitive ink during development.
- the amount of photosensitive conductive paste that is lost during development can be reduced. did it.
- the light-blocking fluid used in the present invention may be any fluid as long as it can block light at the time of exposure and has an appropriate viscosity and does not flow and is kept at the installation position. However, it is desirable to avoid fluids that have significant permeability and solubility in the paste layer.
- An example of a method for installing such a light-shielding fluid is deployment using a doctor blade.
- FIG. 4 and FIG. 8 are diagrams showing the process of this embodiment.
- the photosensitive conductive paste used in Example 1 was applied only to a desired area on the rear plate 101 on which the electrodes 102 and 103 were formed, by a desired opening shown in FIG. It was formed by screen printing using a plate (screen plate) having the following, and dried to obtain a rough pattern (first pattern) 4 (Fig. 4 (a)).
- the pattern (second pattern) of the column-directional wiring 107 having a predetermined film thickness and width as shown in FIG. 4 (c) is obtained by developing and firing. Was completed.
- the step of forming a rough pattern is an example in which a photosensitive conductive paste placed in a transfer press mold is transferred. Other than this, it is the same as the second embodiment.
- FIG. 5 is a diagram showing the process of this embodiment.
- the photosensitive conductive paste used in Example 1 was used only in a desired region using a plate having a desired opening.
- a rough printing (first pattern) 4 is formed by screen printing.
- the photosensitive conductive paste used in Example 1 was filled into the concave portion having a depth of 15 mm of the transfer stamping die 10 with a doctor blade to form a filled transfer paste 11. I do.
- Example 2 the photosensitive conductive paste used in Example 1 was applied to a thickness of 5 m on the rear plate 101 on which the electrodes 102 and 103 were formed. A drawn paste layer 12 was formed.
- the transfer press mold 10 shown in Fig. 5 (a) is placed on the substrate 101, and the press is performed at 100 ° C for 10 minutes while pressing the press at 500 g per 1 cm 2 with a press machine. Kept. Thereafter, the transfer paste 11 was transferred onto the undercoat layer 12 and the transfer mold 10 was removed.
- the transfer press die used in the present invention may be of any shape as long as the recess has a shape that allows the paste to be easily filled into the recess when filling the recess with the paste.
- examples of the material include metal, glass, and resin.
- the transfer press mold is filled with a paste, for example, by a method using a doctor blade.
- the press used for the pressing die in the present invention is desirably a material that can apply a predetermined pressure and can be heated.
- a predetermined pattern was formed under the same conditions as in Example 6, except that the undercoat ink layer 12 was not previously formed on the substrate 101 to be transferred.
- Example 1 a flat panel display having the form shown in FIG. 17 was created, as in Example 1.
- the column wirings 107, the insulating layers 114, and the row wirings 106 were formed by applying a photosensitive conductive paste to the entire surface of the substrate, drying, exposing, developing, and firing. Other than the above, it is the same as Example 1.
- the same photosensitive conductive paste used to form the column-directional wiring 107 in Example 1 was used as the photosensitive conductive paste used to form the row-directional wiring.
- the photosensitive member was put into the paste used for forming the insulating layer in Example 1.
- the method of applying, drying, exposing, developing, and baking the photosensitive conductive paste differs from the method of forming the column-directional wiring of Example 1 in the exposure pattern, baking temperature, and the like. Omitted.
- Example 5 wiring was formed using a screen printing method, and a flat panel display having the form shown in FIG. 17 was produced.
- the insulating layer 114 and the row wirings 106 were also formed by a screen printing method using a photosensitive paste.
- a rough pattern is first applied and formed using a mask having a desired opening pattern, dried, exposed, developed, and fired. Then, an insulating layer of a desired pattern (second pattern) and a row wiring 106 were formed. Except for this, it is the same as the fifth embodiment.
- a flat panel display having the form shown in FIG. 17 was created, as in Example 1.
- the rear plate forming process of the present embodiment is different from the processes (3) to (7) of the first embodiment. Otherwise, the process is the same as that of the first embodiment. Therefore, only the processes corresponding to the steps (3) to (7) of the first embodiment will be described here.
- the photosensitive conductive paste is a paste containing Ag particles and a photosensitive member.
- the photosensitive conductive paste was dried in a far-infrared ray furnace. Then, the photosensitive conductive paste is exposed using a light-shielding mask corresponding to the pattern of the column wiring 107 and a part of the row wiring 106 shown in FIG. 20 (b), and is washed with a solvent. The unexposed portions were removed.
- a rectangular pattern insulating layer 114 was formed at each intersection of the row direction wiring 106 and the column direction wiring 107 by a screen printing method.
- the paste material used was a glass paste containing lead oxide as the main component and a glass binder and resin mixed. The printing and baking of this glass base was repeated four times to form a thread color edge layer 114.
- Connection wiring 106 for connecting a paste containing Ag particles, a glass binder, and a resin by using a screen printing method to a part of the row-directional wiring 106 formed in a separated pattern 106 'Formed with silver paste. By this step, the separated row-direction wirings 106 are connected to form a continuous row-direction wiring.
- a matrix wiring in which the stripe-shaped column wiring 107 and the strip-shaped row wiring 106 are orthogonal to each other is formed via the insulating layer.
- the wiring formed on the rear plate of the present embodiment formed as described above is particularly excellent in electrical connection with the row direction wiring (106, 106 ') at the edge of the insulating layer 114.
- the electrical connection between the electrode 102 and the row wiring (106, 106 ') was also very good.
- the time variation of the light emitting spot of the phosphor was smaller than that of the display of the first embodiment. won. This is because the area of the insulating layer is smaller than that of the first embodiment.
- This embodiment is an example in which the row-directional wiring 106 is connected at the intersection instead of the row-directional wiring 106 connected to the embodiment 10.
- the pattern (FIG. 20 (b)) created in the step (5) described in Example 10 was formed as shown in FIG.
- an insulating layer was disposed at the intersection, and a pattern for electrically connecting the column-directional wiring was formed.
- the matrix wiring formed as described above has no short-circuit between the row-directional wiring 106 and the column-directional wiring 107 similarly to the tenth embodiment.
- the connection between the directional wiring 106 and the electrodes 102 and 103 was good.
- the pattern shown in FIG. 1 (b) of the embodiment 20 was formed by using a screen printing method.
- Example 1 the photosensitive conductive paste used in Example 1 was screen-printed through a mask having openings corresponding to the pattern shown in FIG. (One pattern).
- the insulating layer 1 14 and the part 106 ′ of the row wiring are also formed by a screen printing method using a photosensitive conductive paste having a rough pattern (first pattern). After exposure, development and baking, the pattern shown in Fig. 20 (d) was obtained.
- the matrix wiring formed as described above has no short-circuit between the row-directional wiring 106 and the column-directional wiring 107 similarly to the tenth embodiment, and has no column-directional wiring 107 and row-directional wiring.
- the connection between the wiring 106 and the electrodes 102 and 103 was good.
- a surface conduction electron-emitting device is formed by an ink jet method.
- a conductive film is formed, the penetration of droplets into adjacent wiring can be suppressed, and uniformity can be obtained, and a high-definition large-area display image can be obtained.
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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EP99947867A EP1130617B1 (en) | 1998-10-14 | 1999-10-13 | Method of manufacturing an image-forming device |
US09/722,705 US6986692B1 (en) | 1998-10-14 | 2000-11-28 | Production method of image-forming apparatus, and image-forming apparatus produced by the production method |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP10/291939 | 1998-10-14 | ||
JP29193998 | 1998-10-14 | ||
JP4902799 | 1999-02-25 | ||
JP11/49027 | 1999-02-25 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US09/722,705 Continuation US6986692B1 (en) | 1998-10-14 | 2000-11-28 | Production method of image-forming apparatus, and image-forming apparatus produced by the production method |
Publications (1)
Publication Number | Publication Date |
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WO2000022643A1 true WO2000022643A1 (fr) | 2000-04-20 |
Family
ID=26389381
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP1999/005636 WO2000022643A1 (fr) | 1998-10-14 | 1999-10-13 | Dispositif d'imagerie et son procede de production |
Country Status (4)
Country | Link |
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US (1) | US6986692B1 (ja) |
EP (1) | EP1130617B1 (ja) |
KR (1) | KR100472686B1 (ja) |
WO (1) | WO2000022643A1 (ja) |
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US7097530B2 (en) | 2001-09-07 | 2006-08-29 | Canon Kabushiki Kaisha | Electron source substrate and display apparatus using it |
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JP2006073516A (ja) | 2004-08-30 | 2006-03-16 | Samsung Sdi Co Ltd | 電子放出素子及びその製造方法 |
US7606526B2 (en) * | 2005-09-30 | 2009-10-20 | Xm Satellite Radio Inc. | Method and apparatus for providing digital media player with portable digital radio broadcast system receiver or integrated antenna and docking system |
TWI345110B (en) * | 2006-09-05 | 2011-07-11 | Ind Tech Res Inst | Color backlight device and liquid crystal display thereof |
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1999
- 1999-10-13 WO PCT/JP1999/005636 patent/WO2000022643A1/ja active IP Right Grant
- 1999-10-13 EP EP99947867A patent/EP1130617B1/en not_active Expired - Lifetime
- 1999-10-13 KR KR10-2001-7004648A patent/KR100472686B1/ko not_active IP Right Cessation
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Also Published As
Publication number | Publication date |
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KR100472686B1 (ko) | 2005-03-08 |
EP1130617B1 (en) | 2011-06-15 |
KR20010083909A (ko) | 2001-09-03 |
EP1130617A1 (en) | 2001-09-05 |
EP1130617A4 (en) | 2004-06-16 |
US6986692B1 (en) | 2006-01-17 |
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