WO2006035806A1 - 画像表示装置およびその製造方法 - Google Patents
画像表示装置およびその製造方法 Download PDFInfo
- Publication number
- WO2006035806A1 WO2006035806A1 PCT/JP2005/017824 JP2005017824W WO2006035806A1 WO 2006035806 A1 WO2006035806 A1 WO 2006035806A1 JP 2005017824 W JP2005017824 W JP 2005017824W WO 2006035806 A1 WO2006035806 A1 WO 2006035806A1
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- WO
- WIPO (PCT)
- Prior art keywords
- substrate
- layer
- predetermined
- display device
- image display
- Prior art date
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Classifications
-
- 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
-
- 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
- H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
- H01J9/22—Applying luminescent coatings
-
- 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
- H01J2329/00—Electron emission display panels, e.g. field emission display panels
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2329/00—Electron emission display panels, e.g. field emission display panels
- H01J2329/18—Luminescent screens
- H01J2329/32—Means associated with discontinuous arrangements of the luminescent material
Definitions
- Image display device and manufacturing method thereof
- the present invention relates to an image display device and a manufacturing method thereof, and more specifically, an electron source in a vacuum container and a phosphor screen that displays an image by irradiation of an electron beam emitted from the electron source. And an image display apparatus including the same and a method for manufacturing the same.
- an image display device that replaces a cathode ray tube (CRT)
- an electron-emitting device (electron source) is arranged in a plane and matrix, and is selected as a plane phosphor screen (front substrate) facing each other at a predetermined interval
- An image display device has been developed to display an image by outputting light of any color with a fluorescent surface strength by irradiating an electron beam.
- This type of image display apparatus is called a fine red emission display (hereinafter referred to as FED).
- FED fine red emission display
- a display device using a surface conduction type emitter as an electron source may be classified as a surface conduction type electron emission display (hereinafter referred to as SED).
- SED surface conduction type electron emission display
- the gap between the electron source side substrate and the phosphor side substrate described above can be set to several mm or less, and the thickness can be reduced compared to a known CRT. Compared to flat display devices such as LCD devices, the thickness can be equal to or less than that. Therefore, it is expected in terms of light weight.
- red (R), blue (B), and green (G) phosphors are arranged in a predetermined size and in a predetermined order.
- An anode electrode for applying a predetermined sweep voltage to each phosphor is connected to each phosphor on the phosphor screen.
- the substrate on the electron source side has a scanning line and a signal line for emitting a predetermined amount of electrons from a pre-specified emitter to emit light from a phosphor screen facing an emitter at an arbitrary position. Connected in a matrix.
- the image light output from the phosphor is reflected on the display surface of the front substrate, that is, the viewing surface viewed from the observer to increase the brightness of the image.
- a metal back layer cover which is a thin layer of metal material, is provided on the side facing the substrate on the electron source side.
- the metal back layer functions as an anode, that is, an anode with respect to an electron source, that is, an emitter.
- the substrate on the electron source side and the substrate on the phosphor screen side are opposed to each other with an interval of several mm or less, and the degree of vacuum is maintained at about 10_4 Pa. For this reason, it is known that when the internal pressure increases due to the gas generated inside, the amount of electron emission from the electron source decreases and the brightness of the image decreases. For this reason, it has been proposed to provide a getter material that adsorbs the gas generated inside at a desired position other than the fluorescent screen or the image display area.
- Japanese Patent Laid-Open No. 2000-311642 discloses a technique for increasing the effective impedance of a phosphor screen by forming notches of a zigzag pattern or the like in the metal back layer.
- the phosphors of three colors R, G, and B that can output light corresponding to the three primary colors of light are band-like.
- the distance between the individual phosphors when arranged is several tens of zm at the maximum.
- the interval in the length direction of the phosphor that is, the direction extending in a band shape, is about 100 zm.
- a vacuum deposition method, a CVD method or a scoring method that has been conventionally used as a method for partitioning a getter material that may be integrated with a metal back layer to give a predetermined shape, etc.
- a vacuum deposition method, a CVD method or a scoring method that has been conventionally used as a method for partitioning a getter material that may be integrated with a metal back layer to give a predetermined shape, etc.
- a suitable shape and accuracy cannot be obtained, and abnormal discharge cannot be avoided. is there.
- the step of arranging three types of phosphors on the faceplate A process for forming a frame material for partitioning, that is, a light shielding layer on the face plate, a process for forming a getter material on the phosphor to a predetermined thickness, or patterning the getter material or an integral metal back layer into a predetermined shape.
- Many processes, such as processes, are required, and there is a problem of low productivity.
- An object of the present invention is to suppress the magnitude of the discharge current even when a discharge occurs between the electron source side substrate and the phosphor screen side substrate, and to display an image with a high quality display image. It is to provide an apparatus and its manufacturing method.
- the present invention includes a first substrate holding an electron beam source, a phosphor layer that outputs light of a predetermined color when irradiated with an electron beam output from the electron beam source, and the phosphor
- a light shielding member that separates the layers for each color, a metal thin layer that covers the light shielding member and the phosphor layer and applies a sweep voltage to the electron beam of the electron beam source, and is laminated on the metal thin layer.
- An impurity adsorption layer that adsorbs impurities, and at least the metal layer and the impurity adsorption layer.
- the cut member is a porous material having an indefinite shape in which main materials of a predetermined size are irregularly arranged and including a large number of holes.
- the present invention also outputs light of a predetermined color by irradiating the first substrate holding the electron beam source and the electron beam output from the electron beam source held on the first substrate.
- a phosphor layer ; a light shielding member that divides the phosphor layer for each color; an electron beam from the electron beam source that covers the light shielding member and the phosphor layer and is deformed at a predetermined angle toward the light shielding member;
- a metal thin layer that applies a sweep voltage to the metal, an impurity adsorption layer that is stacked on the metal thin layer and adsorbs impurities, and at least one of the metal layer and the impurity adsorption layer has a predetermined electric resistance.
- a light shielding layer is formed on one surface of the substrate, and R, G, B phosphors are formed in a matrix with a predetermined arrangement in a section defined by the light shielding layer.
- a metal thin film is formed on the light-shielding layer formed in a matrix and disposed in the region, a getter material that adsorbs impurities is provided on the metal thin film, and is opposed to the substrate on which the electron source is formed. After the gap is sealed, the image display device is evacuated to a predetermined degree of vacuum.
- FIG. 1 is a perspective view showing an image display device (FED) according to an embodiment of the present invention.
- FED image display device
- FIG. 2 is a cross-sectional view of the FED taken along line II in FIG.
- FIG. 3 is a plan view for explaining an example of the structure of the phosphor screen in the FED shown in FIG.
- FIG. 4 is an enlarged schematic view showing the vicinity of the phosphor screen of the FED shown in FIG.
- FIG. 5 is a cross-sectional view of the phosphor screen and the like along the line II-II in FIG.
- FIG. 6 is an electron micrograph showing the state of the getter-cut material of Experimental Example 1.
- FIG. 7 is an electron micrograph showing the state of the getter-cut material of Experimental Example 2.
- FIG. 8 is an electron micrograph showing the state of a getter-cut material of a comparative example.
- FIG. 1 and FIG. 2 show the structure of a flat image display apparatus, that is, an FED (field emission display) to which the embodiment of the present invention is applied.
- FED field emission display
- the image display device that is, the FED 1, faces an electron source side substrate (first substrate, hereinafter referred to as a rear panel) 2 having an electron emission element, also referred to as an electron source or an emitter, and the rear panel 2 at a predetermined interval. And a phosphor surface side substrate (second substrate, hereinafter referred to as a face plate) 3 that outputs fluorescence when irradiated with an electron beam from an emitter.
- first substrate first substrate
- an electron emission element also referred to as an electron source or an emitter
- second substrate hereinafter referred to as a face plate
- a plurality of the above-described electron-emitting devices, ie, emitters, are arranged in a planar shape and a matrix shape.
- the faceplate 3 is generally associated with the individual emitters on the rear panel 2 and has multiple sections of phosphors that output light of the three primary colors R (red), G (green), and B (blue). Is formed.
- the rear panel 2 and the face plate 3 are each a rectangular rear surface, ie, an electron source side glass substrate 20 provided with a predetermined area, and a front surface, ie, a phosphor substrate side glass substrate. 30, and a main portion of each of the base materials 20 and 30, that is, a display area corresponding portion, is provided with a predetermined number of electron sources as electron-emitting devices and phosphors as light-emitting devices.
- the two substrates 2, 3, ie, the two glass substrates 20, 30 are faced with a gap (interval) of 1 to 2 mm, and as described below with reference to FIG. They are joined to each other by side walls 4 provided in the sections. That is, the FED 1 becomes an envelope 5 having a sealed structure by the two substrates 2 and 3 and the side wall 4. Note that the inside of the envelope 5 is maintained at a degree of vacuum of, for example, about 10_4 Pa. Between the glass substrate of the rear panel 2 and the face plate 3, there is an enclosure In order to withstand the atmospheric pressure acting on each of them in the assembled state as a vessel 5, a large number of spacers 6 formed in the shape of plates or columns are arranged.
- each of the phosphors of R, G, and B described above is located on one surface of the glass substrate 30 used for the face plate 3, that is, the surface facing inward when assembled as the envelope 5, each of the phosphors of R, G, and B described above is located.
- Phosphor screens 31 arranged in a predetermined order are provided on one surface of the glass substrate 30 used for the face plate 3, that is, the surface facing inward when assembled as the envelope 5.
- the phosphor screen 31 is provided with a metal thin film that functions as an anode electrode, that is, a metal back layer.
- a sweep voltage of 10 to 15 kV, for example, is applied between the electron source and the metal back layer as the anode electrode.
- each of the phosphor layers 32 is provided with an emitter 21 which is a plurality of electron sources that selectively emit an electron beam.
- Each of the electron sources or emitters 21 corresponds to one unit of three colors composed of pixels formed on the face plate 3, that is, phosphor layers 32 (R), 33 (G), and 34 (B).
- phosphor layers 32 (R), 33 (G), and 34 (B) For example, 800 IJ X 3 and 600 lines are distributed IJ.
- the emitter 21 is driven by a matrix wiring or the like connected to a scanning line driving circuit and a signal line driving circuit (not shown).
- the phosphor screen 31 has three types of phosphors that emit light of R, G, and B when electrons emitted from individual emitters of the rear panel 2 collide with each other.
- phosphor layers 32 (R), 33 (G), 34 (B) arranged in a predetermined area and positional relationship, and light shielding layers 35 that partition each phosphor layer and are arranged in a matrix.
- Each phosphor layer 32 (R), 33 (G), 34 (B) is formed in a stripe shape or a dot shape extending in one direction.
- the light shielding layer 35 is sometimes referred to as a black mask.
- Each phosphor layer 32 (R), 33 (G), 34 (B) has a longitudinal direction of the face plate 3, that is, the glass substrate 30, in the first direction (X direction), and a width orthogonal to the X direction.
- the direction is the Y direction
- the second direction is formed, for example, in a stripe shape extending in the Y direction.
- Each phosphor layer R (32), G (33), B (34) is arranged with three colors as one unit.
- the light shielding layer 35 is, for example, a mixture of carbon and a binder material, and its resistance value is set to, for example, 10 3 to: 10 8 [ ⁇ / port].
- the maximum binder content is 80. %.
- the light-shielding layer 35 is predetermined in the X direction, which is the first direction, in such a manner that it can be divided into, for example, 800 lines in units of three colors of phosphor layers R (32), G (33), and B (34). Are arranged with gaps (intervals).
- the light shielding layer 35 is provided with a predetermined width (interval) between the phosphor layers of the individual colors, that is, between R and G and between G and B.
- the light shielding layers 35 are arranged, for example, 600 lines in the Y direction that is the second direction.
- a set of phosphor layers R, G, and B in three colors is respectively provided inside the section defined by the individual lines of the light shielding layer 35, that is, in the window (35a) where the light shielding layer 35 does not exist. They are arranged in the order.
- the light shielding layer 35 is arranged in 800 X 3 mm IJ and 600 rows in the X direction (column direction) and the Y direction (row direction), respectively. Yes.
- each phosphor layer extends in a strip shape.
- the thickness of the region corresponding to the width (X direction) is the horizontal line portion. Narrow compared to thickness.
- the width of the vertical line part is 20 to 100 / im, more preferably 40 to 50 ⁇ between one pixel composed of R, G, and B, that is, between B (34) and 1 (32). m, the remaining proration, ie, between R (32) and G (33) or between G (33) and B (34) 20 to 100 ⁇ m, more preferably 20 to 3 O xm.
- the width of the horizontal line ridge is 150 to 450 / im, more preferably 300 ⁇ m.
- the phosphor screen 31 is provided on the entire surface covering the respective phosphor layer regions 32, 33, and 34 partitioned by the light shielding layer 35, and the phosphor layers 32, 33, and 34 having uneven surfaces have the following A thin metal layer, that is, a metal back layer 36 that functions as an anode electrode and is used to reflect light emitted from the phosphor layer toward the glass substrate 30 is formed to a predetermined thickness.
- a metal back layer 36 that functions as an anode electrode and is used to reflect light emitted from the phosphor layer toward the glass substrate 30 is formed to a predetermined thickness.
- the force using the term “metal back layer” is used. If this layer can function as an anode, various materials other than those limited to metals can be used. Is possible.
- a smoothing layer capable of fixing phosphor particles such as resin to each other may be provided over the entire area of the phosphor layers 32, 33, and 34. .
- the force window portions 35a shown in more detail in FIG. 5 are arranged on the light shielding layer 35.
- the getter (impurity adsorbing) layer 37 is an impurity generated inside the rear panel (first substrate) 2 and the face plate (second substrate) 3 in a sealed state, that is, in the state accommodated in the envelope 5. It is a thin layer of metal or compound that can adsorb gas. For example, Ba (barium) or Ti (titanium) is used.
- the light shielding layer 35 and the getter-cut material 38 are formed independently, but can be integrated by appropriately setting the resistance value.
- FIG. 5 shows the direction in which the individual phosphor layers have the same color, that is, the Y direction in FIG. 3, which is the direction along line II II in FIG.
- the metal back layer 36 and the getter layer 37 are partially electrically discontinuous by the getter-cut material 38 laminated on the light shielding layer 35. That is, the metal back layer 36 and the getter layer 37 are electrically separated at an arbitrary position, making it difficult to electrically conduct as compared with a complete sheet-like metal thin film.
- FIGS. 6 to 8 are electron micrographs of the getter-cut material 38 having the composition shown in [Table 1] below.
- FIG. 6 is a micrograph of [Experimental Example 1] shown in Table 1.
- the getter-cut material 38 is characterized in that the main material is a Zn SiO layer and its shape is indefinite. From the micrograph, the main material
- FIG. 7 is a micrograph of [Experimental Example 2] shown in Table 1.
- the getter-cut material 38 is characterized by using SiO as the main material and having a spherical shape. From the micrograph, the main material
- the spherical shape shows continuity as a force electrical characteristic at the same level as [Experimental Example 1] in terms of the released gas rate.
- the resistance value decreased after Ti flashing, that is, at the end of the getter material supply, and was substantially conductive. It has been confirmed that it will be in a state.
- FIG. 8 is a photomicrograph of [Comparative Example] shown in Table 1.
- the getter-cut material 38 is characterized by the use of SiO as the main material and its shape close to powder, that is, originally With a spherical assembly
- the main material contains Zn or Zn, and is non-spherical.
- a predetermined pigment containing a black pigment such as carbon is used.
- the light shielding layer 35 having the above pattern is formed by a photolithography method or the like.
- the light shielding layer 35 is provided with a pattern in which vertical lines and horizontal lines are arranged in a matrix.
- the individual phosphor layers after drying are patterned using a photolithographic method or the like, so that phosphor layers of three colors of red (R), green (G), and blue (B) 32, 33, 34 Is obtained.
- a getter-cut material 38 may be laminated on the light shielding layer 35 before the phosphor layers of the respective colors are formed.
- the getter-cut material 38 can also be formed after the phosphor layers 32, 33, 34 are formed.
- a smoothing layer made of an inorganic material such as water glass is formed on the phosphor screen 31, that is, the individual phosphor layers 32, 33, and 34 by, for example, spraying, and is superimposed on the smoothing layer.
- the metal back layer 36 is formed from a metal film such as aluminum (A1) by a vacuum deposition method, a CVD method or sputtering. Note that the metal back layer 36 is formed by the individual phosphor layers 32, 33, 34 by the getter cut layer 38 along at least one of the vertical line portion and the horizontal line portion of the light shielding layer 35 in accordance with the principle described above. It is divided every section (display area).
- a getter layer 37 is further laminated on the metal back layer 36.
- the getter layer 37 is formed electrically discontinuously by the getter-cut material 38.
- the face plate 3 on which the phosphor screen 31 is formed and the rear plate 2 on which a predetermined number of electron sources 21 as electron emitting elements are arranged in advance are introduced into the vacuum apparatus, and the face plate 3 is introduced.
- the seat 3 and the rear panel 2 are sealed under a predetermined reduced pressure, that is, in a vacuum.
- the getter layer 37 loses its action when exposed to the atmosphere, so it is formed in a state where the space between the face plate 3 and the rear panel 2 is kept in a vacuum.
- an anode power supply device a scanning line driving circuit, a signal line driving circuit, and the like (not shown) are connected to form FED1.
- the metal back layer 36 as the conductive thin film is electrically discontinuously partitioned or divided by the getter-cut material 38. Therefore, even when a discharge occurs between the face plate 3 and the rear panel 1, the peak value of the discharge current at that time can be sufficiently suppressed, and damage due to the discharge can be avoided.
- the getter material is provided on the mask member that divides the phosphor regions of R, G, and B arranged in a matrix in a predetermined order on the substrate.
- the effect of the getter-cut material that prevents the continuous surface from being shown can be enhanced, and the magnitude of the discharge current can be suppressed even when a discharge occurs between the substrates.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
- Gas-Filled Discharge Tubes (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05788371A EP1796128A1 (en) | 2004-09-30 | 2005-09-28 | Image display device and method for manufacturing the same |
US11/689,123 US20070200482A1 (en) | 2004-09-30 | 2007-03-21 | Image display apparatus and method of manufacturing the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004286639A JP2006100173A (ja) | 2004-09-30 | 2004-09-30 | 画像表示装置およびその製造方法 |
JP2004-286639 | 2004-09-30 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/689,123 Continuation US20070200482A1 (en) | 2004-09-30 | 2007-03-21 | Image display apparatus and method of manufacturing the same |
Publications (1)
Publication Number | Publication Date |
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WO2006035806A1 true WO2006035806A1 (ja) | 2006-04-06 |
Family
ID=36118952
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/017824 WO2006035806A1 (ja) | 2004-09-30 | 2005-09-28 | 画像表示装置およびその製造方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US20070200482A1 (ja) |
EP (1) | EP1796128A1 (ja) |
JP (1) | JP2006100173A (ja) |
KR (1) | KR20070046184A (ja) |
CN (1) | CN101027745A (ja) |
TW (1) | TW200627499A (ja) |
WO (1) | WO2006035806A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8112248B2 (en) | 2005-06-09 | 2012-02-07 | Chemimage Corp. | Forensic integrated search technology with instrument weight factor determination |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR200488372Y1 (ko) | 2018-06-05 | 2019-01-18 | 김광수 | 때밀이용 수건 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003068237A (ja) * | 2001-08-24 | 2003-03-07 | Toshiba Corp | 画像表示装置およびその製造方法 |
JP2004063202A (ja) * | 2002-07-26 | 2004-02-26 | Toshiba Corp | 画像表示装置およびその製造方法 |
-
2004
- 2004-09-30 JP JP2004286639A patent/JP2006100173A/ja active Pending
-
2005
- 2005-09-28 EP EP05788371A patent/EP1796128A1/en not_active Withdrawn
- 2005-09-28 CN CNA200580032009XA patent/CN101027745A/zh active Pending
- 2005-09-28 KR KR1020077006528A patent/KR20070046184A/ko not_active Application Discontinuation
- 2005-09-28 WO PCT/JP2005/017824 patent/WO2006035806A1/ja not_active Application Discontinuation
- 2005-09-30 TW TW094134351A patent/TW200627499A/zh unknown
-
2007
- 2007-03-21 US US11/689,123 patent/US20070200482A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003068237A (ja) * | 2001-08-24 | 2003-03-07 | Toshiba Corp | 画像表示装置およびその製造方法 |
JP2004063202A (ja) * | 2002-07-26 | 2004-02-26 | Toshiba Corp | 画像表示装置およびその製造方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8112248B2 (en) | 2005-06-09 | 2012-02-07 | Chemimage Corp. | Forensic integrated search technology with instrument weight factor determination |
Also Published As
Publication number | Publication date |
---|---|
TW200627499A (en) | 2006-08-01 |
US20070200482A1 (en) | 2007-08-30 |
KR20070046184A (ko) | 2007-05-02 |
CN101027745A (zh) | 2007-08-29 |
EP1796128A1 (en) | 2007-06-13 |
JP2006100173A (ja) | 2006-04-13 |
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