WO2006033137A1 - Electron emitting element manufacturing method, displayer manufacturing method and displayer provided with electron emitting element cleaning function - Google Patents
Electron emitting element manufacturing method, displayer manufacturing method and displayer provided with electron emitting element cleaning function Download PDFInfo
- Publication number
- WO2006033137A1 WO2006033137A1 PCT/JP2004/013761 JP2004013761W WO2006033137A1 WO 2006033137 A1 WO2006033137 A1 WO 2006033137A1 JP 2004013761 W JP2004013761 W JP 2004013761W WO 2006033137 A1 WO2006033137 A1 WO 2006033137A1
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- WIPO (PCT)
- Prior art keywords
- electron
- electrodes
- voltage
- manufacturing
- emitting device
- Prior art date
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Classifications
-
- 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
- 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
-
- 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
- H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
- H01J9/241—Manufacture or joining of vessels, leading-in conductors or bases the vessel being for a flat panel display
Definitions
- the present invention relates to a method for manufacturing a surface conduction electron-emitting device, a method for manufacturing a display device including the electron-emitting device, and a display device including a cleaning function for the electron-emitting device.
- an electron-emitting device for example, a surface conduction electron-emitting device using a phenomenon in which electrons are emitted by flowing a current through a conductive thin film formed on an insulating substrate is known.
- a pair of electrode patterns facing each other through a certain gap are formed on an insulating substrate, and the pair of electrode patterns are connected via the gap.
- the conductive thin film is cracked at an approximately middle position of the gap.
- a plurality of such electron-emitting devices are formed side by side on a substrate, and further combined with a phosphor screen to constitute a display device.
- a drive signal based on image data is given from the outside, and a potential difference is selectively given to the electrode pairs of the plurality of electron-emitting devices to emit electrons. Then, each pixel of the phosphor screen provided in one-to-one correspondence with each electron-emitting device is selectively excited and emitted to display an image.
- the display device in order to display a high-quality image by the above-described display device including the electron-emitting device, the display device has stable life characteristics in which the characteristics of the individual electron-emitting devices are not varied, and display is performed. There is a need to emit sufficient electrons for the purpose. [0008] As a factor causing variations in the characteristics of individual electron-emitting devices, it is considered that impurities adhere to the electron-emitting devices during the manufacturing process.
- Impurities are generated, for example, by an activation process for improving the electron emission performance of the electron-emitting device in the manufacturing process of the electron-emitting device described above.
- the electron-emitting device in which the above-described electron-emitting portion is formed is placed in an atmosphere containing an organic substance gas, a potential difference is applied to a pair of electrodes, and carbon or a carbon compound is deposited on the electron-emitting portion.
- an intermediate product that reaches the final product (carbon or a compound thereof) remaining at the end of the activation process becomes an impurity that causes variation in the characteristics of the electron-emitting device.
- a rear plate having an electron-emitting device is disposed in a processing container, and processing is performed. It is known to remove impurities by irradiating the rear plate with electrons from an electron source installed in a container in a vacuum atmosphere to release surface adsorbed gas.
- An object of the present invention is to provide a method for manufacturing an electron-emitting device that can reliably remove impurities that cause characteristic deterioration by a simple method, a method for manufacturing a display device including the electron-emitting device, and the electron-emitting device. It is intended to provide a display device having a cleaning function.
- the method for manufacturing an electron-emitting device includes a step of forming a pair of electrodes spaced apart from each other on a substrate, and a conductive film so as to connect the pair of electrodes.
- the emission part force has an impurity removal step of releasing electrons and removing impurities on the surface of the electron emission part.
- the method for manufacturing an electron-emitting device includes a step of forming a pair of electrodes spaced apart from each other on a substrate, a step of forming a conductive film so as to connect the pair of electrodes, and the conductive layer.
- an impurity removal step of emitting electrons from the electron emission portion.
- the method for manufacturing a display device of the present invention includes a step of forming a plurality of pairs of electrodes on a back substrate, a step of forming a plurality of conductive films so as to connect the plurality of pairs of electrodes, A step of forming an electron emission portion in each of the plurality of conductive films, an activation step of carbonizing at least the plurality of electron emission portions, a baking step of heat-treating the back substrate in a vacuum atmosphere, and A voltage is applied to the plurality of pairs of electrodes to emit electrons from the plurality of electron emission sections, and a voltage having a reverse polarity is applied to the plurality of pairs of electrodes to emit the plurality of electron emission sections.
- the display device of the present invention is provided on the opposite surface of the rear substrate and the front substrate facing each other with a predetermined gap, and a voltage corresponding to an image signal is applied to a plurality of pairs of electrodes.
- a plurality of electron-emitting devices that selectively emit electrons when applied, and the front surface
- an image display unit that is provided on the opposite surface of the substrate and displays an image by collision of electrons, and applies the voltage of the same polarity as when the image is displayed on the plurality of pairs of electrodes to emit the plurality of electrons.
- an impurity attached to the electron-emitting portion can be reliably removed by applying a voltage having a polarity opposite to that during normal operation to the electrode of the electron-emitting device without requiring a dedicated processing device.
- the timing for removing impurities may be any timing, and may be after the rear substrate and the front substrate of the display device are sealed.
- impurities can be surely removed during the manufacture of the electron-emitting device, impurities can be removed after the display device is manufactured, and the characteristics of the electron-emitting device can be prevented from deteriorating over a long period of time, and a high-quality image can be displayed.
- a display device having stable operating characteristics can be provided.
- FIG. 1 is an external perspective view showing a display device including an electron-emitting device according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view for explaining the internal structure of the display device of FIG.
- FIG. 3 is a cross-sectional view showing a partially enlarged view of the cross section of FIG.
- FIG. 4 is a conceptual diagram showing an electron emission device in which a large number of electron emission elements are arranged on the rear substrate of the display device of FIG.
- FIG. 5 is a plan view schematically showing an electron-emitting device according to an embodiment of the present invention.
- FIG. 6 is a flowchart for explaining a method for manufacturing the electron-emitting device of FIG.
- FIG. 7 is a table showing processing conditions when impurity removal processing is performed on three electron-emitting devices.
- FIG. 8 is a graph showing a change in emission current when an electron-emitting device manufactured based on the processing conditions of FIG. 7 is driven for a long time.
- FIG. 1 is an external perspective view of an SED (Surface-conduction Electron-emitter Display) provided with a number of surface conduction electron-emitting devices as a display device according to an embodiment of the present invention.
- SED Surface-conduction Electron-emitter Display
- the SED has a rear plate 10 (substrate, rear substrate) and a face plate 12 (front substrate) each made of rectangular quartz glass.
- the plates 10 and 12 are arranged to face each other with an interval of about 1.5 to 3. Omm.
- the rear plate 10 and the face plate 12 are joined to each other through a rectangular frame-like side wall 14 having a glass force, thereby forming a flat rectangular vacuum envelope 15.
- a phosphor screen 16 is formed on the inner surface (opposing surface) of the face plate 12.
- the phosphor screen 16 includes a plurality of red, blue, and green phosphor layers 16a and a black colored layer 16b positioned between the phosphor layers. These phosphor layers 16a are formed in stripes or dots. Further, on the phosphor screen 16, a metal back 17 having an aluminum isotropic force is formed. Further, a transparent conductive film or a color filter film having an ITO force, for example, may be provided between the face plate 12 and the phosphor screen 16.
- the structure in which a plurality of layers are laminated on the face plate 12 functions as the image display unit of the present invention.
- a number of surface-conduction electron-emitting devices 18 that emit an electron beam for exciting and emitting the phosphor layer 16a are provided on the inner surface (opposing surface) of the rear plate 10. These electron-emitting devices 18 are provided in a one-to-one correspondence for each pixel, that is, for each phosphor layer 16a, and are arranged in a plurality of columns and a plurality of rows. Details of each electron-emitting device 18 will be described later.
- a large number of wirings for connecting a large number of electron-emitting devices 18 are provided in a matrix on the rear plate 10.
- a structure in which a large number of electron-emitting devices 18 are wired in a matrix and arranged on the rear plate 10 functions as the electron-emitting device of the present invention.
- Various arrangements of the electron-emitting devices 18 can be adopted. Here, an example will be described with reference to FIG.
- the electron-emitting device has a large number of electron-emitting devices 18 aligned on the inner surface of the rear plate 10. Configured. In other words, m electron emitting elements 18 are formed in the X direction (up and down direction) and n in the Y direction (left and right direction).
- each electron-emitting device 18 is connected by a common wiring between the electron-emitting devices 18 in the same row. This is called Y wiring. There are m Y wires from Y1 to Ym. Further, the other electrode of each electron-emitting device 18 is connected by a common wiring between the electron-emitting devices 18 in the same column. This is called X wiring. There are n X wires from XI to Xn.
- the X wiring and the Y wiring are made of the same material as a pair of electrode films described later of each electron-emitting device 18, and are formed by the same film formation and patterning method. Also, there is an intersection between all X and Y lines. All intersections are electrically insulated by an insulating film (not shown). Examples of the insulating film include SiO formed using a vacuum deposition method, a printing method, a sputtering method, and the like.
- a signal voltage (scanning signal) for selecting a row of the electron-emitting devices 18 arranged in the Y direction is applied to the Y wiring, and the electron-emitting devices 18 arranged in the X direction are applied to the X wiring.
- a signal voltage (modulation signal) for modulating the current is applied. Accordingly, the drive voltage applied to each electron-emitting device 18 is supplied as a differential voltage between the scanning signal and the modulation signal applied to each electron-emitting device 18.
- a negative threshold is applied to the wiring Y1 and a value voltage Vf [V] is applied (scanning signal is input), and 0 [V] is applied to the wiring XI, and 0 [V] or more is applied to the X2—Xn.
- Vf [V] scanning signal is input
- 0 [V] is applied to the wiring XI
- 0 [V] or more is applied to the X2—Xn.
- peripheral portions of the face plate 12 and the rear plate 10 configured as described above are connected to each other.
- the side walls 14 to be joined are sealed to the peripheral edge of the rear plate 10 and the peripheral edge of the face plate 12 by, for example, a sealing material 20 such as low melting point glass or low melting point metal. It is joined.
- the SED includes a spacer assembly 22 disposed between the rear plate 10 and the face plate 12.
- the spacer assembly 22 includes a plate-like grid 24 and a plurality of columnar spacers 30 that stand integrally on both sides of the grid.
- the grid 24 has a first surface 24 a facing the inner surface of the face plate 12 and a second surface 24 b facing the inner surface of the rear plate 10. Arranged in a row. A large number of beam passage holes 26 and a plurality of spacer openings 28 are formed in the grid 24 by etching or the like. The beam passage holes 26 are arranged to face the electron-emitting devices 18, respectively, and the spacer opening holes 28 are located between the beam passage holes and arranged at a predetermined pitch. .
- the grid 24 is formed of, for example, an iron-nickel metal plate to a thickness of 0.1-0.25 [mm], and on its surface, an oxide film made of an element constituting the metal plate, For example, an oxide film having Fe O and NiFe 2 O force is formed.
- the beam passage hole 26 is 0.1
- a first spacer 30a is erected on top of each spacer opening 28, and its extended end is connected to the metal back 17 and the fluorescent light.
- the body screen 16 is in contact with the inner surface of the face plate 12 through the black colored layer 16b.
- a second spacer 30b is erected in a body-like manner so as to overlap each spacer opening 28, and its extending end is formed on the inner surface of the rear plate 10. It is in contact.
- Each spacer opening 28, the first and second spacers 30 a and 30 b are aligned with each other, and the first and second spacers 30 a and 30 b pass through the spacer opening 28.
- each of the first and second spacers 30a, 30b has a tapered shape in which the diameter gradually decreases from the grid 24 side toward the extended end thereof, that is, more specifically, a substantially truncated cone shape. Is formed.
- each first spacer 30a has a diameter at the end on the grid 24 side of about 400 [m], a diameter at the end on the extended end side of about 280 [m], and a height of about 0 [m]. 3-0. 5 [mm], aspect ratio
- the height (diameter of the Z grid side edge) is 0.775-1.25.
- Each of the second spacers 30b has a diameter at the end on the grid 24 side of about 400 [m], a diameter at the extended end side of about 150 [/ ⁇ ⁇ ], and a height of about 11 mm. 1. It is 2 [mm] and the aspect ratio is 2.5-3.
- each spacer opening 28 formed in the grid 24 is about 0.1 to 0.2 mm, and the diameter of the first spacer 30a on the grid side is And the diameter of the second spacer 30b is set to be sufficiently smaller than the diameter of the grid side end.
- the first and second spacers 30a and 30b are coaxially aligned with the spacer opening 28 so as to be integrated with each other so that the first and second spacers can be opened. They are connected together through holes 28 and integrated with the grid 24.
- the grid 24 of the spacer assembly 22 configured as described above is applied with a predetermined voltage from a power source (not shown) to prevent crosstalk and correspond to each beam passage hole 26.
- the electron beam emitted from the electron emitting element 18 is converged on a desired phosphor layer.
- the first and second spacers 30a and 30b abut against the inner surfaces of the face plate 12 and the rear plate 10 to support the atmospheric pressure load that the outer force of the vacuum envelope 15 acts on the plates 10 and 12.
- the interval between the plates is maintained at a predetermined value.
- the SED is manufactured by incorporating the spacer assembly 22 manufactured as described above
- the rear plate 10 provided with the electron-emitting device 18 and having the side wall 14 bonded thereto A body plate 16 and a face plate 12 provided with a metal back 17 are prepared.
- the spacer assembly 22 manufactured as described above positioned on the rear plate 10 the rear plate 10 and the face plate 12 are placed in a vacuum chamber (not shown).
- the face plate 12 is joined to the rear plate 10 via the side wall 14.
- an SED equipped with the spacer assembly 22 is manufactured.
- FIG. 5 shows a schematic plan view of one electron-emitting device 18 in which the inner side force of the rear plate 10 is also viewed. It is.
- the electron-emitting device 18 includes, on the inner surface of the rear plate 10, two device electrodes 31 and 32 (a pair of electrodes) spaced apart from each other, a conductive film 34 that connects a gap between the device electrodes 31 and 32, A line-shaped electron emission part 36 that divides the conductive film 3 4 into two parts and the force are also configured! RU
- glass with reduced impurity content such as Na, blue plate glass, and blue plate glass are laminated with SiO 2 by sputtering or the like.
- Bodies, ceramics such as alumina, and Si substrates can be used.
- the material of the device electrodes 31, 32 a general conductor material can be used, for example, Ni, Cr, Au, Mo, W, Pt, Ti, Al, Cu, Pd, etc. It is appropriately selected from metal or alloy printed conductors, semiconductor materials and the like.
- the device electrodes 31 and 32 are formed of Pt.
- Each of the element electrodes 31 and 32 is formed in a square shape having a side of 55 ⁇ m, and is opposed to a position where the opposite end sides form a uniform gap of 20 m.
- Examples of the material of the conductive film 34 include metals such as Pd, Pt, Ru, Ag, Au, Ti, In, Cu, Cr, Fe, Zn, Sn, Ta, W, and Pb, PdO, and SnO.
- Oxide conductors such as InO, PbO, SbO
- Borides such as HfB, ZrB, LaB, CeB, YB, GdB, TiC, ZrC, HfC, TaC, SiC
- Carbides such as WC, nitrides such as TiN, ZrN, and HfN, semiconductors such as Si and Ge, and carbon.
- Pd is formed by sputtering, heated in the atmosphere and oxidized, and then photolithography or dry etching is performed with a width of 50 [/ ⁇ ⁇ ] and a length of 40 [ ⁇ m]. Film 34 was formed.
- the electron emission portion 36 is formed by a high-resistance crack formed in a part of the conductive film 34, and depends on the film thickness, film quality, material, and a method such as energization forming described later. It becomes.
- conductive fine particles having a diameter in the range of several A to several tens of nm are present inside the electron emission portion 36.
- the conductive fine particles contain a part or all of the elements of the material constituting the conductive film 34.
- Carbon and a carbon compound are deposited on at least the electron emission portion 36 and the conductive film 34 in the vicinity thereof.
- the rear plate 10 is sufficiently washed with an organic solvent, and Pt which is a material for the device electrodes 31 and 32 is formed by vacuum deposition. Thereafter, a plurality of sets of the device electrodes 31 and 32 having the above-described shape are formed on the rear plate 10 by photolithography (step 1).
- an organic metal solution is applied to the rear plate 10 provided with the plurality of sets of element electrodes 31 and 32 as described above to form an organic metal film.
- a solution of an organic compound containing the material of the conductive film 34 (Pd in this embodiment) as a main element can be used.
- this organometallic film is heated and baked and patterned by lift-off, etching, laser processing, etc. to form a plurality of conductive films 34 (step 2).
- a coating method of the organometallic solution a vacuum deposition method, a sputtering method, a chemical vapor deposition method, a dispersion coating method, a dubbing method, a spinner method, or the like can be used.
- a forming process for forming the electron emission portion 36 is performed on each conductive film 34 (Step 3).
- the forming process is usually performed by applying a potential difference to the pair of element electrodes 31 and 32 and energizing the conductive film 34.
- the voltage during the forming process is preferably a pulse waveform.
- the forming process can be terminated, for example, by measuring the current flowing by applying a voltage of about 0.1 [V], obtaining the resistance value, and indicating the resistance of 1 [ ⁇ ] or more.
- the voltage was applied between 32 and 32.
- the voltage waveform was a rectangular pulse, the pulse width was 0.1 [msec], the pulse interval was 16 [msec], the peak value was 10 [V], and the voltage was applied for 60 seconds.
- an electron emission portion 36 was formed at a substantially intermediate position of the conductive film 34 in parallel with the end sides where the device electrodes 31 and 32 face each other.
- the electron emission element 18 that has been subjected to the forming process as described above is subjected to an activation process (step 4).
- the activation treatment is, for example, by applying a Norse voltage between the device electrodes 31 and 32 in an atmosphere containing an organic substance gas as in the forming treatment. To be implemented. This activation process significantly increases device current and emission current Ie.
- the atmosphere containing the organic substance gas can be formed using the organic gas remaining in the atmosphere when the vacuum apparatus is exhausted using an oil diffusion pump or a rotary pump. It can also be obtained by introducing a gas of a suitable organic substance in a vacuum.
- suitable organic substances include aliphatic hydrocarbons, aromatic hydrocarbons, alcohols, aldehydes, ketones, amines, organic acids and the like.
- methane is introduced at 10- 3 [Pa] stand in a vacuum apparatus which houses arranged rear plate 10 was performed the activation process.
- the voltage applied to the device electrodes 31 and 32 was a rectangular pulse of 18 [V], the pulse width was 1 [msec], the pulse interval was 10 [msec], and the voltage was printed for 30 minutes.
- the electron-emitting device 18 By this active treatment, carbon or a carbon compound is deposited on the electron-emitting device 18 from an organic substance present in the atmosphere, and at least the electron-emitting portion 36 is carbonized. As a result, the device current If and the emission current Ie are remarkably increased.
- the film thickness of the deposit is preferably in the range of 50 [nm] or less, more preferably in the range of 30 [nm] or less! / ⁇
- the electron-emitting device 18 that has been subjected to the activation process as described above is subjected to heat treatment (baking treatment) in a vacuum atmosphere (step 5).
- the organic gas remaining in the vacuum apparatus is exhausted while heating the rear plate 10 disposed in the vacuum apparatus.
- the vacuum exhaust device for exhausting the vacuum device it is preferable to use a device that does not use oil so that the oil generated by the device does not affect the characteristics of the electron-emitting device 18.
- the partial pressure of the organic component in the vacuum chamber is the carbon, particularly preferably 10- 8 [Pa] or less in gesture et preferred is LCT ⁇ Pa] or less by ⁇ partial pressure such almost newly deposit carbon compound .
- the whole vacuum device is heated so that the organic substance molecules adsorbed on the inner wall of the vacuum device and the electron-emitting device 18 can be easily exhausted.
- an impurity removal process is performed to more reliably remove impurities that cause the characteristics of the electron-emitting device 18 to deteriorate (step 6).
- the element current of each electron-emitting device 18 on the rear plate 10 disposed in the vacuum apparatus is determined.
- a voltage having the same polarity as in normal driving (positive polarity in this embodiment) is applied to the poles 31 and 32 in a vacuum atmosphere, and driving is performed in a timely manner.
- a higher voltage than in normal operation is applied to each element electrode 31 and 32 for a certain period of time in the same direction as in normal operation to stabilize the element characteristics.
- a voltage having a reverse polarity negative polarity in the present embodiment
- a voltage having the same polarity as that during normal operation is applied to all the device electrodes 31 and 32 for a certain period of time, and a reverse polarity voltage is applied to all the device electrodes 31 and 32.
- impurities in the electron emission portion 36 are removed. More specifically, by applying a voltage in the positive polarity direction to all the device electrodes 31 and 32 to emit electrons from the electron emission portion 36, impurities adsorbed on the surface of the electron emission portion on the + electrode side are removed.
- a voltage in the negative polarity direction to all the device electrodes 31 and 32 to emit electrons from the electron emission portion 36, impurities adsorbed on the surface of the electron emission portion on the pole side are removed.
- Various waveforms such as a square wave, a sine wave, and a triangular wave can be adopted as the pulse voltage waveform, and the polarity of the pulse voltage is a positive polarity pulse, a negative polarity pulse, or a bipolar polarity.
- What has a pulse alternately can be employ
- the energization process is performed until the impurities adsorbed on the electron-emitting portions 36 of all the electron-emitting devices 18 that can be adjusted as appropriate are appropriately adjusted in the magnitude, pulse width, frequency, polarity, waveform, etc. of the pulse voltage. You can continue.
- the device electrodes 31 and 32 of each electron-emitting device 18 have a polarity opposite to that during normal operation. It is adsorbed to the electron emission part 36 of the electron emitter 18 by a simple method of applying a voltage. Thus, it is possible to reliably remove the impurities, and to stabilize the characteristics of the electron-emitting device 18 for a long time.
- FIG. 7 shows the processing conditions for the three electron-emitting devices A, B, and C at this time.
- FIG. 8 shows the processed electron-emitting devices A, B, and C for a long time (1400 in this embodiment). Changes in emission current when driving (time) are shown as a graph.
- FIG. 8 shows a change in emission current when the electron cleaning process of FIG. 7 is performed and the electron-emitting device is driven for a long time.
- the voltage applied to the device electrodes 31 and 32 was a square wave pulse.
- the pulse voltage is applied to the device electrodes 31 and 32 by changing the pulse voltage application time to 10 [min]. Voltage was applied. In other words, since the degree of gas poisoning with respect to the three electron-emitting devices A, B, and C is different, only the pulse voltage application time in the electron cleaning process is changed as a processing condition.
- the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the constituent elements without departing from the spirit of the invention in the implementation stage.
- Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments. For example, some components may be deleted from the total component force shown in the above-described embodiment.
- the impurity removal process is performed after the baking process and before the sealing process is described.
- the present invention is not limited to this, and impurities may be generated during the baking process or before the baking process.
- the impurity removal treatment may be performed after the activation treatment that may be performed.
- the impurity removal process is performed during the SED manufacturing process.
- the present invention is not limited to this, and the impurity removal process described above is not limited to the rear plate 10 and the face plate 12. It can also be carried out after the SED has been manufactured with the edges facing each other and sealed at the periphery.
- the emission current emitted from each electron-emitting device 18 is monitored via a detection unit (not shown), and the value of the emission current (amount of emitted electrons) is set in advance. Under the condition that it has changed beyond a certain value, the above-mentioned tallying function is activated to remove impurities.
- the impurity removal process described above can be performed at any timing during or after the SED manufacturing process.
- the temporal change in the emission current value of each electron-emitting device 18 of the SED can be eliminated, and stable driving characteristics can be exhibited over a long period of time.
- impurities that cause deterioration of the characteristics of the electron-emitting device can be reliably removed by a simple method.
- the electron-emitting device can be cleaned at a desired timing, and deterioration of characteristics due to adhesion of impurities over time can be prevented.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2004/013761 WO2006033137A1 (en) | 2004-09-21 | 2004-09-21 | Electron emitting element manufacturing method, displayer manufacturing method and displayer provided with electron emitting element cleaning function |
EP04787944A EP1793405A1 (en) | 2004-09-21 | 2004-09-21 | Electron emitting element manufacturing method, displayer manufacturing method and displayer provided with electron emitting element cleaning function |
US11/677,376 US20070138957A1 (en) | 2003-07-08 | 2007-02-21 | Electron emission element manufacturing method, display unit manufacturing method, and display unit with electron emission element cleaning function |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2004/013761 WO2006033137A1 (en) | 2004-09-21 | 2004-09-21 | Electron emitting element manufacturing method, displayer manufacturing method and displayer provided with electron emitting element cleaning function |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/677,376 Continuation US20070138957A1 (en) | 2003-07-08 | 2007-02-21 | Electron emission element manufacturing method, display unit manufacturing method, and display unit with electron emission element cleaning function |
Publications (1)
Publication Number | Publication Date |
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WO2006033137A1 true WO2006033137A1 (en) | 2006-03-30 |
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PCT/JP2004/013761 WO2006033137A1 (en) | 2003-07-08 | 2004-09-21 | Electron emitting element manufacturing method, displayer manufacturing method and displayer provided with electron emitting element cleaning function |
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EP (1) | EP1793405A1 (en) |
WO (1) | WO2006033137A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000243293A (en) * | 1999-02-24 | 2000-09-08 | Canon Inc | Electron source manufacturing device, manufacture of the electron source, and the electron source |
JP2000311596A (en) * | 1999-02-25 | 2000-11-07 | Canon Inc | Manufacture of and equipment for electron emitting element, driving method and adjusting method for it |
JP2002175756A (en) * | 2000-09-29 | 2002-06-21 | Canon Inc | Manufacturing method for image display device |
-
2004
- 2004-09-21 WO PCT/JP2004/013761 patent/WO2006033137A1/en not_active Application Discontinuation
- 2004-09-21 EP EP04787944A patent/EP1793405A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000243293A (en) * | 1999-02-24 | 2000-09-08 | Canon Inc | Electron source manufacturing device, manufacture of the electron source, and the electron source |
JP2000311596A (en) * | 1999-02-25 | 2000-11-07 | Canon Inc | Manufacture of and equipment for electron emitting element, driving method and adjusting method for it |
JP2002175756A (en) * | 2000-09-29 | 2002-06-21 | Canon Inc | Manufacturing method for image display device |
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EP1793405A1 (en) | 2007-06-06 |
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