WO2005124813A1 - 画像表示装置および画像表示装置の製造方法 - Google Patents
画像表示装置および画像表示装置の製造方法 Download PDFInfo
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- WO2005124813A1 WO2005124813A1 PCT/JP2005/011073 JP2005011073W WO2005124813A1 WO 2005124813 A1 WO2005124813 A1 WO 2005124813A1 JP 2005011073 W JP2005011073 W JP 2005011073W WO 2005124813 A1 WO2005124813 A1 WO 2005124813A1
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- getter
- getter film
- front substrate
- film
- image display
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/30—Cold cathodes, e.g. field-emissive cathode
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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
- H01J9/38—Exhausting, degassing, filling, or cleaning vessels
- H01J9/385—Exhausting vessels
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/02—Details
- H01J17/22—Means for obtaining or maintaining the desired pressure within the tube
- H01J17/24—Means for absorbing or adsorbing gas, e.g. by gettering
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/94—Selection of substances for gas fillings; Means for obtaining or maintaining the desired pressure within the tube, e.g. by gettering
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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
-
- 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
- H01J9/38—Exhausting, degassing, filling, or cleaning vessels
- H01J9/39—Degassing vessels
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2209/00—Apparatus and processes for manufacture of discharge tubes
- H01J2209/38—Control of maintenance of pressure in the vessel
- H01J2209/385—Gettering
Definitions
- Image display device and method of manufacturing image display device are Image display device and method of manufacturing image display device
- the present invention relates to an image display device including a front substrate and a rear substrate that are arranged to face each other, and a method for manufacturing the same.
- CTRs cathode ray tubes
- PDP plasma display
- FED field emission display
- FED SED surface conduction electron emission device
- These image display devices include a front substrate and a rear substrate that are arranged to face each other at a predetermined interval, and these substrates constitute an envelope by joining peripheral portions of each other.
- the FED enables good image display by maintaining the space between the front substrate and the rear substrate, that is, the inside of the envelope at a high degree of vacuum.
- PDPs it is important to maintain high purity of the inert gas that fills the envelope.
- a getter material for absorbing released gas is provided in the envelope and plays an important role.
- Japanese Patent Application Laid-Open No. 2001-229284 discloses that a getter material is vapor-deposited on the inner surface of a front substrate or a rear substrate or other structures in a vacuum processing apparatus, and then both substrates are joined in a vacuum.
- An image display device, a manufacturing method, and a manufacturing device in which an envelope is formed by using the same have been proposed. In such an apparatus, it is common to use norium-titanium as a getter material.
- one type of active metal is used as a getter material.
- a single getter material is used in the getter forming step because a getter film is easily formed.
- a single getter material does not always provide a sufficient gas adsorption rate or gas adsorption amount.
- barium which is a general getter material, cannot adsorb hydrogen sufficiently.
- titanium which is generally used as a getter pump, absorbs hydrogen sufficiently. Although it can, carbon dioxide cannot be adsorbed sufficiently. Therefore, even if these getter materials are used, the degree of vacuum and gas purity in the envelope constituting the image display device deteriorate in a short time, and the inside of the image display device is maintained at a high vacuum for a long period of time. It becomes difficult to maintain high display performance. Disclosure of the invention
- the present invention has been made in view of the above points, and an object of the present invention is to provide an image display device and an image display device capable of improving the gas adsorption capability of a getter film and maintaining high display performance for a long period of time. And a method of manufacturing an image display device.
- an image display device includes an envelope having a front substrate provided with a display surface, and a rear substrate opposed to the front substrate.
- the substrate has a metal back formed on the display surface and a getter film having a tantalum force formed on the metal knock.
- a method of manufacturing an image display device includes an envelope having a front substrate provided with a display surface and a rear substrate opposed to the front substrate.
- the substrate includes: a metal back formed on the display surface; and a getter film formed on the metal back.
- a first getter material made of active metal is vaporized in the vacuum chamber to form a first getter film in the vacuum chamber.
- the second getter material having tantalum force is evaporated in the vacuum chamber, and a second getter film is formed on the metal back to form the second getter film.
- Front board and front Ru as characterized by constituting an envelope and sealing the periphery of the rear substrate.
- FIG. 1 is a perspective view showing an SED according to a first embodiment of the present invention.
- FIG. 2 is a cross-sectional view of the SED taken along line II II in FIG. 1.
- FIG. 3 is a cross-sectional view schematically showing a configuration of a getter film of the SED.
- FIG. 4 is a diagram showing a comparison of the display performance retention of the SED for each type of getter.
- FIG. 5 is a graph showing a comparison of gas adsorption amounts when the getter film of the SED is formed using barium, titanium, and barium-titanium in combination.
- FIG. 6 is a graph showing a comparison of gas adsorption amounts when a getter film of SED is formed by using tantalum, titanium, and tantalum-titanium together.
- FIG. 7 is a cross-sectional view showing a getter film forming apparatus in the SED.
- FIG. 8 is a cross-sectional view showing a sealing device used for manufacturing the SED.
- FIG. 9 is a sectional view showing a front substrate of an SED according to a second embodiment of the present invention.
- FIG. 10 is a sectional view showing a front substrate of an SED according to a third embodiment of the present invention.
- FIG. 11 is a cross-sectional view showing a getter film forming apparatus according to a third embodiment of the present invention.
- FIG. 12 is a plan view showing a mask used for forming a getter film according to a second embodiment of the present invention.
- FIG. 13 is a sectional view showing an apparatus for forming a getter film according to a fourth embodiment of the present invention.
- FIG. 14 is a view schematically showing a step of forming the getter film.
- this SED has a front substrate 11 and a rear substrate 12, each of which has a rectangular glass plate strength as an insulating substrate, and these substrates face each other with a gap of l to 2 mm. Are located.
- the front substrate 11 and the rear substrate 12 are joined to each other via a rectangular frame-shaped side wall 13 to form a flat rectangular vacuum envelope 10 whose inside is maintained in a vacuum state.
- the side wall 13 functioning as a joining member is sealed to the peripheral portion of the front substrate 11 and the peripheral portion of the rear substrate 12 by a sealing material 23 such as a low-melting glass, a low-melting metal, or the like. Are joined.
- a plurality of spacers 14 are provided inside the vacuum envelope 10 in order to support an atmospheric pressure load applied to the front substrate 11 and the rear substrate 12.
- a plate-shaped or column-shaped spacer or the like can be used as the spacer 14.
- a phosphor screen 15 having a red, green, and blue phosphor layer 16 and a matrix light-shielding layer 17 as a display surface is formed on the inner surface of the front substrate 11.
- These phosphor layers 16 may be formed in a stripe shape or a dot shape.
- a metal back 20 having an aluminum-palladium film or the like is formed on the phosphor screen 15. 2 are formed.
- a large number of surface conduction electron-emitting devices 18 each emitting an electron beam are provided as electron sources for exciting the phosphor layer 16 of the phosphor screen 15. .
- These electron-emitting devices 18 are arranged in a plurality of columns and a plurality of rows corresponding to each pixel.
- Each electron-emitting device 18 includes an electron-emitting portion (not shown), a pair of device electrodes for applying a voltage to the electron-emitting portion, and the like.
- a number of wirings 21 for supplying a potential to the electron-emitting devices 18 are provided in a matrix, and the ends of the wirings 21 are drawn out of the vacuum envelope 10.
- the getter film 22 is composed of a laminated film having a first getter film 22a formed on the metal back 20, and a second getter film 22b laminated on the first getter film. ing.
- the first and second getter films 22a and 22b are formed of different active metals.
- the first getter film 22a is formed of barium (B) to a thickness of 200 nm or less
- the second getter film 22b is formed of titanium (Ti) to a thickness of 200 nm or less.
- FIG. 4 shows a change in luminance with the lapse of use time, assuming that the luminance of the display image in the initial state of the SED is 100% as the display performance retention rate.
- the getter film 22 in which a plurality of getter materials are stacked, stable display performance can be maintained for a long time as compared with the case where a single getter material is used.
- the gas adsorption amount was tested for a plurality of SEDs, the use of a plurality of getter materials compared to the case of using a getter film with a single getter material. ,gas It was confirmed that a getter film having a high adsorption capacity could be obtained.
- the getter material it is desired to select at least one of the active metals of tantalum, norium, titanium, and platinum (V).
- V platinum
- Various selections can be made depending on the vacuum atmosphere. For example, if carbon dioxide adversely affects the performance of the image display device, select barium or tantalum to remove hydrogen, and if so, select titanium.
- the getter film 22 is formed of a multilayer film having a plurality of types of getter materials, the properties of the getter material located on the outermost surface and exposed inside the envelope become stronger. Therefore, it is desirable to provide a film of a getter material for adsorbing a gas to be adsorbed on the surface side.
- the number of getter films to be stacked is not limited to two, but may be three or more. In this case, two or three or more getter materials may be used. Further, the thickness of each layer is not limited to the same, but may be different. Further, the getter film may be formed of a single layer of tantalum. Note that the laminated film is simple and advantageous in terms of manufacturing cost.
- a force using norium and titanium as getter materials is not limited thereto, and another getter material such as tantalum may be used.
- FIGS. 4 and 6 also show the display performance retention and the gas adsorption ability of the getter film of a SED having a tantalum single-layer film and a titanium-tantalum laminated film, respectively.
- the first getter film 22a formed on the metal back 20 is formed of titanium (Ti) to a thickness of 20 nm, and
- the overlapped second getter film 22b is formed to a thickness of about 20 to 40 nm by tantalum (Ta).
- the second getter film 22b is located on the outermost surface and is exposed inside the vacuum envelope 10. Even in the case of such a getter film 22, by using a plurality of types of getter materials, the characteristics of the respective getter materials are combined to obtain high display performance.
- the first getter film 22a is not limited to titanium, and other active metals can be used.
- the first getter film 22a is made of an active metal having a high hydrogen absorption capacity, such as titanium (V), zirconium (Zr), and barium (Ba), in addition to titanium. It is desirable to use a gap.
- a front substrate 11 on which a phosphor screen 15 and a metal back 20 are formed on the inner surface, and a rear substrate 12 on which an electron-emitting device 18 is provided are prepared.
- the side wall 13 and the plurality of spacers 14 are previously bonded to the back substrate 12.
- a sealing material is filled along the entire upper surface of the side wall 13.
- indium was used as a sealing material.
- the front substrate 11 is taken out of the baking chamber and, as shown in FIG. 7, is put into a vapor deposition chamber 40 without breaking a vacuum state.
- the deposition chamber 40 is maintained at a degree of vacuum of about 10-5 Pa by an exhaust pump (not shown).
- first and second getter members 23a and 23b, and high-frequency coils 42a and 42b for heating the first and second getter members, respectively, are provided in the deposition chamber 40.
- a partition wall 41 is provided between the first and second getter members 23a and 23b.
- the deposition chamber 40 and the high-frequency coils 42a and 42b as a heating mechanism constitute a getter film forming apparatus.
- the front substrate 11 placed in the vapor deposition chamber 40 is arranged with the metal back 20 facing the first getter material 23a. Subsequently, the first getter material 23a is heated by heat and evaporated by the high frequency coil 42a to form the first getter film 22a on the metal back 20.
- the first getter material 23a for example, titanium was used, and vacuum deposition was performed by induction heating with a high-frequency coil 42a.
- the front substrate 11 is arranged at a position facing the second getter member 23b.
- the second getter material 23b is heated and evaporated by the high frequency coil 42b to form the second getter film 22b on the first getter film 22a.
- tantalum was used as the second getter material 23b, and vacuum deposition was performed by induction heating with a high-frequency coil 42b.
- a getter film 22 formed by laminating the first getter film 22a and the second getter film 22b was formed.
- the front substrate 11 on which the getter film 22 is formed is carried into a sealing chamber 50 that is not exposed to the outside air.
- the periphery of the substrate is locally located in the sealing chamber 50.
- a local heating mechanism for heating and a sealing mechanism 52 for pressing the substrate are provided.
- the local heating mechanism has annular heaters 51a and 51b.
- the sealing chamber 50 is kept at a high vacuum of 10 _5 Pa stand by the exhaust pump 54.
- the rear substrate 12 and the other members constituting the vacuum envelope 10 are carried into a sealing chamber 50 that is not exposed to the outside air after a predetermined process.
- the positions of the front substrate 11 and the rear substrate 12 are adjusted so that the phosphor layer 16 formed on each substrate and the electron-emitting device 18 face correctly.
- the peripheral portions of the back substrate 12 and the front substrate 11 are heated to about 180 ° C. by the heaters 51a and 51b to melt indium as a sealing material.
- the front substrate 11 was pressed against the rear substrate 12 by the sealing mechanism 52 and was brought into contact with the peripheral edge of the front substrate and the side wall 13 via indium. Thereafter, the indium is cooled until it solidifies, and the vacuum envelope 10 is formed. As a result, an SED is obtained.
- the getter film 22 by forming the getter film 22 using a plurality of getter materials, it is possible to improve the gas adsorption capability of the getter film. Therefore, it is possible to obtain an SED that can suppress deterioration of the electron-emitting device and maintain high display performance for a long period of time.
- the configuration of the getter film 22 is not limited to a laminated film, and a getter film 22 may be configured as a mixed film.
- the getter film 22 is formed as a pattern film. That is, the getter film 22 has a first getter film 22a and a getter film 22b, which are also different getter materials, formed alternately along the surface direction of the front substrate 11, and each of the getter films 22 is placed in a vacuum atmosphere. It is exposed.
- Each of the first getter film 22a and the second getter film 22b is formed in a stripe shape, and extends along the longitudinal direction or the width direction of the front substrate 11.
- the width of the stripes of the first getter film 22a and the second getter film 22b can be changed by changing the ratio of the area of the getter material exposed in the vacuum atmosphere. Accordingly, the gas adsorption characteristics of the getter film 22 can be easily controlled.
- the getter film 22 is formed by mixing a plurality of types of getter materials, for example, a first getter material 23a and a second getter material 23b, and simultaneously depositing the mixed film. As Is formed. When such a mixed film is used, the gas adsorption characteristics of the getter film 22 can be easily controlled by changing the mixing ratio of the first and second getter materials.
- the second and third embodiments three or more types of getter materials may be used in combination. Since the ratio of the getter material to be used can be freely selected for the mixed film and the pattern film, the adsorption performance is easily controlled.
- other configurations are the same as those of the above-described first embodiment, and the same portions are denoted by the same reference numerals and detailed description thereof will be omitted.
- the degassed front substrate 11 is put into the vapor deposition chamber 40 without breaking the vacuum state.
- the vacuum chamber 40 is maintained at a degree of vacuum of about 10 5 Pa by an exhaust pump (not shown).
- first and second getter members 23a and 23b and high-frequency coils 42a and 42b for heating the first and second getter members, respectively, are installed.
- the front substrate 11 placed in the vapor deposition chamber 40 is arranged with the metal back 20 facing the first getter material 23a and the second getter material 23b. Subsequently, the first getter material 23a and the second getter material 23b are simultaneously heated and evaporated by the high frequency coils 42a and 42b to form a getter film 22 made of a mixed film of the first and second getter materials on the metal back 20. did.
- the first and second getter members 23a for example, titanium and tantalum were used, and vacuum deposition was performed by induction heating with high-frequency coils 42a and 42b. By controlling the deposition rate of each getter material, a getter film having an arbitrary mixing ratio can be formed.
- a hollow mask 60 is prepared as shown in FIG.
- the mask 60 is formed in a rectangular plate shape having a size substantially equal to that of the front substrate 11, and a plurality of stripe-shaped openings 62 are formed in parallel with each other with a predetermined gap.
- the mask 60 is put into the vapor deposition chamber 40 shown in FIG. 7, and is disposed between the front substrate 11 and the first getter material 23a.
- the first getter material 23a is heated and evaporated by the high-frequency coil 42a to form the stripe-shaped first getter film 22a on the metal back 20.
- the first getter material 23a for example, titanium was used and vacuum-deposited by induction heating with a high-frequency coil 42a.
- the front substrate 11 is arranged at a position facing the second getter material 23a, and the mask 6 0 is arranged between the front substrate 11 and the second getter material 23b.
- the second getter material 23b is heated and evaporated by the high-frequency coil 42b to form a striped second getter film 22b between the first getter films 22a.
- the second getter material 23b for example, tantalum was used, and vacuum evaporation was performed by induction heating with a high frequency coil 42b.
- a getter film 22 in which the first getter films 22a and the second getter films 22b are alternately formed is formed.
- the front substrate 11 and the rear substrate 12 are sealed by the same steps as in the first embodiment described above, and the vacuum envelope 10 is obtained.
- a front substrate 11 in which a phosphor screen 15 and a metal back 20 are formed on the inner surface, and a rear substrate 12 in which an electron-emitting device 18 is provided are prepared.
- the side wall 13 and the plurality of spacers 14 are previously bonded to the back substrate 12.
- a sealing material is filled along the entire upper surface of the side wall 13.
- indium was used as a sealing material.
- the front substrate 11 is taken out of the baking chamber, and is put into a vacuum chamber 40 without breaking the vacuum state, as shown in FIG.
- An exhaust pump 43 for evacuating the inside of the vacuum chamber is connected to the vacuum chamber 40.
- first and second getter members 23a and 23b, and electron beam emission sources 43a and 43b for heating the first and second getter members, respectively, are provided. Titanium is used as the first getter material 23a, and tantalum is used as the second getter material 23b.
- a partition 41 is erected between the first and second getter members 23a and 23b.
- the vacuum chamber 40 is provided with a heater 44 for baking out the vacuum chamber itself and discharging gas.
- the heater 44 is constituted by a sheath heater having a linear heating power such as an enameled wire or a tape heater formed of a cloth containing a ribbon-shaped heating wire, and wound around the outside of the vacuum chamber 40.
- a transfer mechanism (not shown) for supporting and transferring the front substrate 11 is provided.
- the front substrate 11 has a metal back 20 on the bottom side of the vacuum chamber, that is, the first or second getter material 23a, 23b. It is arranged so that it faces side.
- the wall of the vacuum chamber 40, the transport mechanism, and the like are heated to 120 to 150 ° C. by the heater 44 to discharge gas from the vacuum chamber itself, and exhaust the gas.
- the inside of the vacuum chamber is evacuated by the air pump 43.
- the second getter material 23b is pre-heated to about 3000 ° C. by irradiating the second getter material 23b with an electron beam from the electron beam emission source 42b. Thereby, impurities such as the oxide film existing on the surface of the second getter material 23a are evaporated.
- the front substrate 11 is arranged at a position facing the first getter material 23a so that the evaporated second getter material 23b does not adhere to the front substrate 11, and the adhesion of the second getter material to the front substrate is prevented. Preheat the second getter material 23b in a regulated state.
- the first getter material 23a is pre-heated to about 2000 ° C. by irradiating the first getter material 23a with an electron beam from the electron beam emission source 43a. Thereby, impurities such as an oxide film existing on the surface of the first getter material 23a are evaporated.
- the front substrate 11 is arranged at a position facing the second getter material 23b so that the evaporated first getter material 23a does not adhere to the front substrate 11, and the adhesion of the first getter material to the front substrate is prevented.
- the first getter material 23a is preheated in a regulated state.
- the first getter material 23a is heated to about 2000 ° C. by the electron beam emission source 43a and evaporated.
- a first getter film 22a made of titanium is deposited on the inner surface of the vacuum chamber 40 and the metal back 20.
- the front substrate 11 is arranged at a position where the metal back 20 faces the second getter member 23a.
- the second getter material 23b is heated to about 3000 ° C. by the electron beam emission source 43b to evaporate, and the second getter film 22b having tantalum force is superimposed on the first getter film 22a on the metal back 20. Evaporate.
- tantalum as the second getter material, hydrogen is generated, and the generated hydrogen is adsorbed by the first getter film 22a which has a titanium force and is formed in the vacuum chamber 40 in advance.
- the second getter film 22b which also becomes tantalum which does not deteriorate the degree of vacuum in the vacuum chamber 40 in a fresh state without deterioration.
- tantalum is a high melting point metal, a force that raises the temperature inside the vacuum chamber 40 during vapor deposition of tantalum. Degree of deterioration can be prevented. Accordingly, a fresh second getter film 22b can be obtained without deterioration.
- the front substrate 11 on which the getter film 22 is formed is carried into a sealing chamber 50 shown in FIG. 8 without exposing the front substrate 11 to the outside air. Then, the front substrate 11 and the rear substrate 12 are sealed with each other in the sealing chamber 50 by the same method as in the above-described first embodiment, and the vacuum envelope 10 is formed. From this, SED is obtained.
- the gas adsorption ability of the getter film can be improved. Further, by forming the getter film 22 using a plurality of getter materials including tantalum, the gas adsorbing ability of the getter film can be further improved. Therefore, it is possible to obtain an SED capable of maintaining the inside of the vacuum envelope at a high degree of vacuum and suppressing deterioration of the electron-emitting device, and maintaining high display performance for a long period of time.
- tantalum as the second getter material is deposited in a state where the first getter film is formed in the vacuum chamber in advance, so that hydrogen generated during the deposition of tantalum can be reduced. Adsorbed by the first getter film. Therefore, the inside of the vacuum chamber 40 is maintained at a high V and a degree of vacuum, and the second getter film 22b having tantalum force can be formed in a fresh state without deterioration.
- the gas is discharged by vacuuming the inside of the vacuum chamber in advance, it is possible to prevent the degree of vacuum from deteriorating during the deposition of tantalum. Accordingly, a fresher second getter film 22b is obtained. From this, it is possible to obtain an SED that can sufficiently extract the properties of tantalum as a getter, maintain a high degree of vacuum in the vacuum envelope, and maintain high display performance for a long period of time.
- the present invention is not limited to the above-described embodiment as it is, and may be embodied by modifying the components without departing from the scope of the invention at the stage of implementation. Further, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiments. For example, some components, such as all components shown in the embodiments, may be deleted. Furthermore, components of different embodiments may be appropriately combined.
- the vacuum chamber is preliminarily vacuumed and then the getter film is deposited, but the baking step may be omitted. Even in this case, after the first getter film is formed in the vacuum chamber, the second getter film made of tantalum is deposited on the front substrate to suppress the deterioration of the degree of vacuum and to form a fresh getter film. Can be.
- the first getter film is formed in the vacuum chamber and on the metal back of the front substrate, the first getter film may be formed only in the vacuum chamber.
- the first getter material 23a is vapor-deposited while the front substrate 11 is moved to a position facing the second getter material 23b. Thereafter, the second getter material 23b is evaporated to form a second getter film 22b on the metal back of the front substrate 11.
- the getter film of the front substrate 11 is formed of one layer of tantalum.
- the second getter film is deposited, hydrogen is adsorbed by the first getter film formed in the vacuum chamber, and the fresh second getter film 22b without deterioration is placed on the metal back. Can be formed. Therefore, the characteristics of tantalum as a getter can be fully exploited, and an SED that can maintain a high degree of vacuum in the vacuum envelope and maintain high display performance for a long period of time can be obtained.
- each component can be variously selected as needed without being limited to the numerical values and materials shown in the above-described embodiment.
- the getter material is not limited to norium-titanium and the like, and other metal materials, organic materials, and inorganic materials can be selected.
- the getter film may be deposited not only on the front substrate but also on another component located in the vacuum envelope.
- the deposition method is not limited to high-frequency heating and electron beam deposition, and it is also possible to select deposition by current heating.
- the present invention is not limited to SEDs, but may be applied to other image display devices such as FEDs and PDPs.
- the gas adsorption characteristics of the getter film can be improved to characteristics obtained by combining a plurality of getter materials.
- the design range of the characteristics of the getter film is widened, the inside of the envelope is maintained at a high degree of vacuum, and an image display device capable of maintaining high display performance for a long period of time and a method of manufacturing the same. Can be obtained.
- the use of tantalum as the getter film can improve the gas adsorption capacity and provide an image display device capable of maintaining high display performance for a long period of time.
- a tantalum getter film is formed on the front substrate, so that hydrogen generated when depositing tantalum is absorbed by the first getter film.
- a second getter film without deterioration can be formed. Accordingly, it is possible to provide a method of manufacturing an image display device capable of improving gas adsorption capability and maintaining high display performance for a long period of time.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Description
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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KR1020067026410A KR20070033354A (ko) | 2004-06-18 | 2005-06-16 | 화상 표시 장치 및 화상 표시 장치의 제조 방법 |
EP05751568A EP1763060A1 (en) | 2004-06-18 | 2005-06-16 | Image display unit and production method for image display unit |
JP2006514791A JPWO2005124813A1 (ja) | 2004-06-18 | 2005-06-16 | 画像表示装置および画像表示装置の製造方法 |
US11/611,175 US20070080637A1 (en) | 2004-06-18 | 2006-12-15 | Image display apparatus and method of manufacturing the image display apparatus |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2004180976 | 2004-06-18 | ||
JP2004-180976 | 2004-06-18 | ||
JP2004183754 | 2004-06-22 | ||
JP2004-183754 | 2004-06-22 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/611,175 Continuation US20070080637A1 (en) | 2004-06-18 | 2006-12-15 | Image display apparatus and method of manufacturing the image display apparatus |
Publications (1)
Publication Number | Publication Date |
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WO2005124813A1 true WO2005124813A1 (ja) | 2005-12-29 |
Family
ID=35509982
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/011073 WO2005124813A1 (ja) | 2004-06-18 | 2005-06-16 | 画像表示装置および画像表示装置の製造方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20070080637A1 (ja) |
EP (1) | EP1763060A1 (ja) |
JP (1) | JPWO2005124813A1 (ja) |
KR (1) | KR20070033354A (ja) |
TW (1) | TW200614861A (ja) |
WO (1) | WO2005124813A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011049666A (ja) * | 2009-08-25 | 2011-03-10 | Seiko Instruments Inc | パッケージ及びパッケージの製造方法、圧電振動子、発振器、電子機器、並びに電波時計 |
JP2011131207A (ja) * | 2009-11-17 | 2011-07-07 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | 2つの活性化温度を有するゲッタ及びこのゲッタを備える構造 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI408725B (zh) * | 2008-12-04 | 2013-09-11 | Ind Tech Res Inst | 電子發射式發光裝置及其封裝方法 |
KR20140133674A (ko) * | 2013-05-09 | 2014-11-20 | 삼성디스플레이 주식회사 | 레이저 열전사 장치 및 그것을 사용한 레이저 열전사 방법 |
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- 2005-06-16 EP EP05751568A patent/EP1763060A1/en not_active Withdrawn
- 2005-06-16 KR KR1020067026410A patent/KR20070033354A/ko not_active Application Discontinuation
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JP2011049666A (ja) * | 2009-08-25 | 2011-03-10 | Seiko Instruments Inc | パッケージ及びパッケージの製造方法、圧電振動子、発振器、電子機器、並びに電波時計 |
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Also Published As
Publication number | Publication date |
---|---|
US20070080637A1 (en) | 2007-04-12 |
JPWO2005124813A1 (ja) | 2008-04-17 |
TW200614861A (en) | 2006-05-01 |
KR20070033354A (ko) | 2007-03-26 |
EP1763060A1 (en) | 2007-03-14 |
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