WO2006006355A1 - 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
- WO2006006355A1 WO2006006355A1 PCT/JP2005/011452 JP2005011452W WO2006006355A1 WO 2006006355 A1 WO2006006355 A1 WO 2006006355A1 JP 2005011452 W JP2005011452 W JP 2005011452W WO 2006006355 A1 WO2006006355 A1 WO 2006006355A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- shielding layer
- light shielding
- phosphor
- thickness
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J31/00—Cathode ray tubes; Electron beam tubes
- H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
- H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
- H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
- H01J31/123—Flat display tubes
- H01J31/125—Flat display tubes provided with control means permitting the electron beam to reach selected parts of the screen, e.g. digital selection
- H01J31/127—Flat display tubes provided with control means permitting the electron beam to reach selected parts of the screen, e.g. digital selection using large area or array sources, i.e. essentially a source for each pixel group
-
- 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
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/08—Electrodes intimately associated with a screen on or from which an image or pattern is formed, picked-up, converted or stored, e.g. backing-plates for storage tubes or collecting secondary electrons
- H01J29/085—Anode plates, e.g. for screens of flat panel displays
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 for displaying an image by irradiation of an electron beam emitted from the electron source. And an image display apparatus including the same and a manufacturing method thereof.
- a cathode ray tube (CRT) is widely used as an image display device that irradiates a phosphor with an electron beam to cause the phosphor to emit light and, as a result, displays an image.
- the FED can set the gap between the electron source side substrate and the phosphor side substrate to be several mm or less, and can be made thinner than a known CRT. It is known that the weight can be further reduced compared with such a flat display device.
- the image quality of the displayed image is a self-luminous type similar to CRT and plasma displays, so it has a feature that high brightness can be obtained.
- a phosphor layer (phosphor surface) is used to reflect the image light output from the phosphor on the display surface (observation surface viewed by the observer), that is, the face plate side to increase the brightness of the image.
- a metal back layer that is, a metal layer for reflecting, to the face plate side, the light traveling from the phosphor to the electron source side out of the light emitted from the phosphor by the electron source force also emitted is provided. Note that the metal back layer functions as an anode for the electron source, that is, the 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.
- the gap between the face plate and the rear plate (electron source side) having the electron-emitting device is several mm or less, and 10 kV between the two plates.
- a discharge vacuum arc discharge
- a large discharge current reaching 100 A occurs between the metal back layer (anode) and the electron source (emitter) is likely to occur. Is known.
- Japanese Patent Application Laid-Open No. 2000-311642 discloses a technique for increasing the effective impedance of a phosphor screen by forming a notch of a pattern such as a zigzag in the metal back layer. .
- Japanese Patent Application Laid-Open No. 2003-68237 reports an example in which a metal back layer is divided into a plurality of pieces and a getter material is disposed between the divided metal backs.
- a vacuum deposition method, a CVD method or a sputtering method conventionally used as a method for giving (partitioning) a predetermined shape to the getter material (which may be integrated with the metal back layer). Even if the method is used, due to the accuracy of the mask material and the alignment accuracy between the mask material and the phosphor, a suitable shape (accuracy) cannot be obtained, and abnormal discharge cannot be avoided. is there.
- the step of arranging three types of phosphors on the faceplate A step of forming a light shielding layer, which is a frame material for partitioning, on the face plate, a step of forming a getter material on the phosphor to a predetermined thickness, or a getter material (or an integral metal knock layer) in a predetermined shape
- a number of processes represented by the patterning process are necessary, and there is a problem of low productivity.
- An object of the present invention is an image display device and a method for manufacturing the same, which can suppress the peak value of the discharge current even when discharge occurs between the electron source side and the phosphor screen side, and has high productivity. .
- a light-shielding layer is formed in a matrix on one plane of the face plate, using a material including particles having a shape capable of defining irregularities on the side that does not contact the face plate even after patterning is completed.
- a phosphor layer that can output light of a predetermined color when irradiated with an electron beam has a predetermined thickness and arrangement associated with the thickness of the light shielding layer.
- the entire thickness of the body layer including the light shielding layer itself is set to such a height that the total thickness including the thickness of the phosphor layer is equal to the thickness of the light shielding layer or lower by a predetermined height.
- the thickness of the phosphor layer and the thickness of the metal back layer are included in the entire area including the phosphor layer, the light shielding layer, and the metal back layer formed in the region partitioned by the light shielding layer.
- a metal layer for the getter layer is formed to a predetermined thickness so that the entire thickness is equal to or lower than the thickness of the light shielding layer in at least a part of one main surface of the face plate.
- Electron source corresponding to body layer Placing a method for manufacturing an image display device provided with.
- FIG. 1 is a perspective view showing an FED according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view of the FED taken along line AA in FIG.
- FIG. 4 is an enlarged plan view showing the phosphor screen and the light shielding layer of the FED shown in FIG.
- FIG. 6 is a cross-sectional view of the phosphor screen and the like along line CC in FIG.
- FIG. 1 and FIG. 2 show the structure of an FED (Field 'Emission Display) to which the embodiment of the present invention is applied.
- FED Field 'Emission Display
- the FED 1 is opposed to an electron source side substrate (first substrate, hereinafter referred to as a rear panel) 2 in which a plurality of electron-emitting devices (electron sources) are arranged in a plane, and the rear panel 2 at a predetermined interval. And a phosphor screen side substrate (second substrate, hereinafter referred to as a face plate) 3 in which a plurality of phosphors that output fluorescence when irradiated with a line are formed in a plurality of sections.
- first substrate hereinafter referred to as a rear panel
- a phosphor screen side substrate second substrate, hereinafter referred to as a face plate
- Each of the rear panel 2 and the face plate 3 includes a rectangular rear surface (electron source side) glass base material 20 and a front surface (phosphor surface side) glass base material 30 each having a predetermined area.
- the main parts of the base materials 20 and 30, that is, the display area corresponding parts are shown in FIG.
- a predetermined number of electron sources (electron-emitting devices) and phosphors (light-emitting devices) described below are provided.
- the two substrates 2, 3, that is, the two glass substrates 20, 30 are faced with a gap (interval) of 1 to 2 mm, and the side walls 4 (Fig. 2) provided at the peripheral portions of both the substrates 2, 3 To each other). That is, the FED 1 becomes an envelope 5 having a sealed structure by the two substrates 2 and 3 (base materials 20 and 30) and the side wall 4. Note that the inside of the envelope 5 is maintained at a degree of vacuum of about 10_4 Pa, for example.
- the light shielding layer 35 has a longitudinal direction of the face plate 3 (glass substrate 30) as a first direction (X direction) and a width direction orthogonal to the X direction (longitudinal direction) as a second direction (Y direction).
- the phosphor layers R (32), G (33), and B (34) are arranged in the first direction X with a predetermined gap (interval), for example, 800 lines.
- a predetermined gap for example, 800 lines.
- 600 lines of phosphor layers of the same color are arranged with a predetermined gap (interval).
- the size of the gap can be arbitrarily set within the range of manufacturing error or within the range of fine adjustment of the design, and does not necessarily have to be a constant value.
- One side of the glass substrate 20 used for the rear panel 2, that is, the envelope 5 is assembled.
- the surface facing inward when standing up is a plurality of electrons that selectively emit an electron beam to excite the individual phosphor layers 32, 33, 34 formed on the phosphor screen 31 of the face plate 3.
- An emission element (emitter) 21 is provided.
- Each (electron-emitting device) 21 is arranged in, for example, 800 columns ⁇ 3 and 600 rows corresponding to each pixel formed on the face plate 3.
- the electron-emitting device 21 is driven through a matrix wiring connected to a scanning line driving circuit and a signal line driving circuit (not shown) or a light shielding layer 35 in which a resistance value is optimally set.
- an electron beam (electron beam) is emitted from the electron-emitting device 21 in a state where an anode voltage is applied to the metal back layer 36, whereby an electron is emitted to the corresponding phosphor layer.
- the line collides and a predetermined light (image) is output. That is, Xn-Ym (n is a column) whose position is specified by a scanning line driving circuit and a signal line driving circuit (not shown).
- the light shielding layers 35 are arranged in 800 X 3 columns and 600 rows in the force X direction (column direction) and the Y direction (row direction), which are easily understood from FIGS. 3 and 4, respectively.
- the light-shielding layer 35 is X between the phosphor layers (between the same colors) in the matrix region that partitions the individual phosphor layers 32 (R), 33 (G), and 34 (B) of the phosphor screen 31.
- a plurality of horizontal line portions 35H extending in the direction, Multiple vertical lines 35V extending in the Y direction between phosphor layers (R (32) and G (33), G (33; ⁇ B (34), B (34) and R (32), respectively))) It is divided into and.
- each phosphor layer extends in a strip shape.
- the thickness of the vertical line portion 35V corresponding to the width (X direction) is: It is narrow compared to the thickness of the horizontal line 35H.
- the width of the vertical line portion 35V is 20 to: LOO ⁇ m, more preferably 40 to 50 between one pixel of R, G and B forces, that is, between B (34) and R (32). ⁇ m and the remaining portion, ie, between R (32) and G (33) or between G (33) and B (34) 20 to: L00 m, more preferably 20 to 30 / ⁇ ⁇ .
- the horizontal line width is 150 to 450 / ⁇ ⁇ , more preferably 300 ⁇ m.
- the light shielding layer 35 that is, the horizontal line portion 35H and the vertical line portion 35V, for example, is designed so that the light output from the phosphor layer does not leak (transmit) undesirably in adjacent pixels.
- the material used for the light shielding layer 35 can be used without any particular limitation as long as it contains a metal oxide and can withstand high-temperature heating such as a sealing step.
- Examples of the metal oxide to be mixed include SiO 2, TiO 2, Al 2 O 3, Fe 2 O 3 and ZnO.
- the shape (outer shape) of the metal oxide is, for example, particles of a predetermined size obtained by pulverizing an acid soot, and a polyhedron in a state where protrusions protruding in an unspecified direction are generated. Etc. are preferred.
- an arbitrary number of protrusions or needle-like parts (sharp parts) can be grown and used on a generally spherical metal oxide.
- the outer shape (maximum value) including the metal oxide protrusions (needle-like or sharp parts) is defined to be, for example, several ⁇ m to 10 ⁇ m.
- the light shielding layer 35 including a metal oxide having a protrusion, a needle-like portion, or a sharpened portion is formed by a well-known photolithography technique. That is, the light shielding layer 35 is applied to a predetermined thickness on one surface of the glass substrate 30, and the pattern exposure and development process ends. It is preferable to maintain a state in which unevenness remains on the surface side which is a free end that does not contact the glass substrate 30 even at times.
- the thickness of the light shielding layer 35 that is, the height viewed from the glass substrate 30, is, for example, 10 / zm, and the phosphor layer R (32), G is added to the portion to be removed in the development process in the subsequent process. (33) and B (34)
- the phosphor material force is formed to a height (thickness) equal to the thickness of the light-shielding layer 35 or as low (thin) as a predetermined height.
- an inorganic material such as water glass or a thin lacquer layer is formed to a predetermined thickness as a smoothing member.
- an inorganic material such as water glass or a thin lacquer layer is formed to a predetermined thickness as a smoothing member.
- the vertical line portion 35V and the horizontal line portion 35H of the light shielding layer 35 are equal to the thickness of the phosphor layers 32 (R), 33 (G), 34 (B) or lower (thin) by a predetermined height.
- the height of the light shielding layer 35 is lower than the height of the phosphor layer, the height can be arbitrarily set as long as the phosphor layers 32, 33, 34, the metal back layer 36 and the getter layer 37 can be divided. It is. Note that here, the term “breaking” is intended to mean that there is no electrical continuity, but in general, even with an insulator, the resistance value is not strictly infinite, but it is electrically separated in a strict sense. Impossible. For this reason, in the present application, the fact that the resistance becomes remarkably higher than the state of the continuous film due to the discontinuous film is expressed as electrical division.
- the light-shielding layer 35 having an uneven surface is suitable for separating the metal back layer 36 and the getter layer 37, the light-shielding layer 35 is itself a matrix and integrated.
- the resistance value of the light shielding layer 35 is, for example, 10 3 ⁇ by optimizing the conductivity (resistance value) inherent to the metal oxide used as the light shielding layer 35 and the mixing ratio with the binder material. It is preferable to set more than the mouth.
- the upper limit is preferably about 10 8 ⁇ , for example.
- a light shielding layer 35 having a predetermined pattern that also has a black pigment (carbon) force is formed. It is formed by a photolithography method or the like.
- the light shielding layer 35 is provided with a pattern in which, for example, a vertical line portion 35V and a horizontal line portion 35 ⁇ are arranged in a matrix.
- a vertical line portion 3 of a phosphor solution of ZnS, Y 2 O 3, Y 2 O 3, etc. is obtained by a slurry method or the like.
- each display area (light emitting space) partitioned by 5V and horizontal line part 35H, dried, and then patterned using a photolithographic method, etc., and red (R), green (G), blue (B)
- the three color phosphor layers 32, 33 and 34 are formed.
- the phosphor layers for each color can also be formed by spraying or screen printing. Needless to say, patterning by the photolithographic method may also be used in combination with the spray method or screen printing method as necessary.
- a smooth layer (not shown) made of an inorganic material such as water glass is formed by, for example, spraying, and aluminum (
- a metal back layer 36 is formed from a metal film such as A1) by vacuum deposition, CVD or sputtering.
- the metal back layer 36 is divided for each section (display area) of the individual phosphor layers 32, 33, and 34 by the vertical line portion 35V and the horizontal line portion 35H of the light shielding layer 35 in accordance with the principle described above. .
- 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 (electron emitting elements) 21 are arranged in advance are introduced into the vacuum apparatus, and the face plate 3 and the rear panel 2 are introduced. Are sealed under a predetermined reduced pressure (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 the FED 1.
- the unevenness of the light shielding layer 35 is the force described in the example provided in all the columns and rows of the matrix.
- the vertical line portion 35V has R, G, B It may be provided only between B and R (where the gap is wide) when 3 pixels are combined into one pixel. /.
- the metal back layer 36 and the getter layer 37 on the phosphor screen 31 including the light-shielding layer 35 whose surface is formed in a concavo-convex shape by a vacuum film forming process, an electrically discontinuous region is obtained.
- the metal back layer 36 and the getter layer 37 containing can be collectively formed on almost the entire phosphor screen 31 by a single process. As a result, it is possible to manufacture an image display device that is not damaged by electric discharge at a low cost.
- the metal back layer and the getter material on the phosphor screen can be reliably electrically separated without increasing the length.
- the R, G, and B phosphors arranged in a predetermined order on the face plate are partitioned by the light shielding layer formed on the substrate before the phosphors are arranged. In a predetermined area on the substrate.
- the light shielding layer is given a predetermined resistance value, and the metal layer and getter material formed on the phosphor in a later step are continuous surfaces showing electrical conduction along the phosphor surface. Can be prevented.
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05753310A EP1760757A1 (en) | 2004-06-23 | 2005-06-22 | Image display device and method for manufacturing the same |
US11/562,140 US20070090749A1 (en) | 2004-06-23 | 2006-11-21 | Image display apparatus and method of manufacturing the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-185470 | 2004-06-23 | ||
JP2004185470A JP2006012503A (ja) | 2004-06-23 | 2004-06-23 | 画像表示装置およびその製造方法 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/562,140 Continuation US20070090749A1 (en) | 2004-06-23 | 2006-11-21 | Image display apparatus and method of manufacturing the same |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006006355A1 true WO2006006355A1 (ja) | 2006-01-19 |
Family
ID=35779514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/011452 WO2006006355A1 (ja) | 2004-06-23 | 2005-06-22 | 画像表示装置およびその製造方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20070090749A1 (ja) |
EP (1) | EP1760757A1 (ja) |
JP (1) | JP2006012503A (ja) |
TW (1) | TWI270315B (ja) |
WO (1) | WO2006006355A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4238757B2 (ja) * | 2004-03-19 | 2009-03-18 | セイコーエプソン株式会社 | 透過型スクリーンおよび投写型表示装置 |
KR20080043536A (ko) * | 2006-11-14 | 2008-05-19 | 삼성에스디아이 주식회사 | 발광 장치 및 표시 장치 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0676753A (ja) * | 1991-11-20 | 1994-03-18 | Samsung Display Devices Co Ltd | 遠赤外線放射陰極線管 |
JPH11185673A (ja) * | 1997-12-24 | 1999-07-09 | Sony Corp | 画像表示装置 |
JP2002124199A (ja) * | 2000-08-08 | 2002-04-26 | Sony Corp | 表示用パネル、表示装置、及び、それらの製造方法 |
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 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5453659A (en) * | 1994-06-10 | 1995-09-26 | Texas Instruments Incorporated | Anode plate for flat panel display having integrated getter |
MY118433A (en) * | 1994-12-26 | 2004-11-30 | Toshiba Kk | Display screen, method of manufacturing the same, and cathode ray tube |
JP3024539B2 (ja) * | 1995-05-17 | 2000-03-21 | 双葉電子工業株式会社 | 電子線励起発光素子 |
US5689151A (en) * | 1995-08-11 | 1997-11-18 | Texas Instruments Incorporated | Anode plate for flat panel display having integrated getter |
US5614785A (en) * | 1995-09-28 | 1997-03-25 | Texas Instruments Incorporated | Anode plate for flat panel display having silicon getter |
JPH09274103A (ja) * | 1996-04-04 | 1997-10-21 | Sony Corp | カラーフィルター組成物、カラー表示装置およびその製造方法 |
-
2004
- 2004-06-23 JP JP2004185470A patent/JP2006012503A/ja active Pending
-
2005
- 2005-06-22 WO PCT/JP2005/011452 patent/WO2006006355A1/ja not_active Application Discontinuation
- 2005-06-22 EP EP05753310A patent/EP1760757A1/en not_active Withdrawn
- 2005-06-23 TW TW094121003A patent/TWI270315B/zh not_active IP Right Cessation
-
2006
- 2006-11-21 US US11/562,140 patent/US20070090749A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0676753A (ja) * | 1991-11-20 | 1994-03-18 | Samsung Display Devices Co Ltd | 遠赤外線放射陰極線管 |
JPH11185673A (ja) * | 1997-12-24 | 1999-07-09 | Sony Corp | 画像表示装置 |
JP2002124199A (ja) * | 2000-08-08 | 2002-04-26 | Sony Corp | 表示用パネル、表示装置、及び、それらの製造方法 |
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 |
Also Published As
Publication number | Publication date |
---|---|
TWI270315B (en) | 2007-01-01 |
EP1760757A1 (en) | 2007-03-07 |
JP2006012503A (ja) | 2006-01-12 |
US20070090749A1 (en) | 2007-04-26 |
TW200614862A (en) | 2006-05-01 |
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