WO2000034973B1 - Spacer with rough face for flat panel display - Google Patents

Spacer with rough face for flat panel display

Info

Publication number
WO2000034973B1
WO2000034973B1 PCT/US1999/029354 US9929354W WO0034973B1 WO 2000034973 B1 WO2000034973 B1 WO 2000034973B1 US 9929354 W US9929354 W US 9929354W WO 0034973 B1 WO0034973 B1 WO 0034973B1
Authority
WO
WIPO (PCT)
Prior art keywords
wall
face
amended
plate structure
display
Prior art date
Application number
PCT/US1999/029354
Other languages
French (fr)
Other versions
WO2000034973A1 (en
Inventor
Roger W Barton
Kollengode S Narayanan
Bob L Mackey
John M Macaulay
George B Hopple
Donald R Schropp Jr
Michael J Nystrom
Sudhakar Gopalakrishnan
Shiyou Pei
Xueping Xu
Original Assignee
Candescent Tech Corp
Advanced Tech Materials
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Candescent Tech Corp, Advanced Tech Materials filed Critical Candescent Tech Corp
Publication of WO2000034973A1 publication Critical patent/WO2000034973A1/en
Publication of WO2000034973B1 publication Critical patent/WO2000034973B1/en

Links

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
    • H01J9/24—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
    • H01J9/242—Spacers between faceplate and backplate
    • 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
    • H01J29/028—Mounting or supporting arrangements for flat panel cathode ray tubes, e.g. spacers particularly relating to electrodes
    • 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
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H01J29/864—Spacers between faceplate and backplate of flat panel cathode ray tubes
    • 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
    • H01J2329/00—Electron emission display panels, e.g. field emission display panels
    • H01J2329/86—Vessels
    • H01J2329/8625—Spacing members
    • H01J2329/863—Spacing members characterised by the form or structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2329/00—Electron emission display panels, e.g. field emission display panels
    • H01J2329/86—Vessels
    • H01J2329/8625—Spacing members
    • H01J2329/863—Spacing members characterised by the form or structure
    • H01J2329/8635—Spacing members characterised by the form or structure having a corrugated lateral surface
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2329/00—Electron emission display panels, e.g. field emission display panels
    • H01J2329/86—Vessels
    • H01J2329/8625—Spacing members
    • H01J2329/864—Spacing members characterised by the material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2329/00—Electron emission display panels, e.g. field emission display panels
    • H01J2329/86—Vessels
    • H01J2329/8625—Spacing members
    • H01J2329/8645—Spacing members with coatings on the lateral surfaces thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2329/00—Electron emission display panels, e.g. field emission display panels
    • H01J2329/86—Vessels
    • H01J2329/8625—Spacing members
    • H01J2329/865—Connection of the spacing members to the substrates or electrodes
    • H01J2329/866—Adhesives

Abstract

A flat-panel display contains a pair of plate structures (20, 22) separated by a spacer (24) having a rough face (54, 56). When electrons strike the spacer, the roughness in the spacer's face causes the number of secondary electrons that escape the spacer to be reduced, thereby alleviating positive charge buildup on the spacer. As a result, the image produced by the display is improved. The spacer facial roughness can be achieved in various ways such as depressions and/or protuberances. Various techniques are presented for manufacturing the display, including the rough-faced spacer.

Claims

AMENDED CLAIMS
[received by the International Bureau on 19 June 2000 (19.06.00); original claims 1, 10, 11, 13, 15, 17, 19-26, 96, 102 and 108 amended; remaining claims unchanged (4 pages)]
Rewrite Claims 1, 10, 11, 13, 15, 17, 19 - 26, 96, 102, and 108 as follows:
— 1. (Amended) A flat-panel display comprising: a first plate structure for emitting electrons; a second plate structure, situated opposite the first plate structure, for emitting light to produce an image upon receiving electrons emitted by the first plate structure, an electric field of average strength EAv being directed from the second plate structure to the first plate structure during operation of the display; and a spacer situated between the plate structures, the spacer comprising a spacer wall having a face that extends at least partway from either plate structure to the other plate structure, the wall's face having roughness which, as approximated by identical parallel cylindrical pores of pore diameter dP, corresponds to a wall porosity of at least 10% along the wall's face and a pore height hP of at least 15% of pore height parameter hMD that
equals
Figure imgf000003_0001
where e is the electron charge, and 8 DMD is the median
departure energy of secondary electrons emitted by the wall the roughness in the wall's face comprising depressions or/and protuberances in the wall's face, each depression or protuberance extending only partway across the wall's face.
10. (Amended) A display as in any of Claims 1 - 9 wherein the [roughness in the wall's face comprises] depressions [in the wall's face] are situated at locations generally random relative to one another.
11. (Amended) A display as in any of Claims 1 - 9 [Claim 10] wherein the depressions comprise pores.
13. (Amended) A display as in any of Claims 1 - 9 [Claim 10] wherein the depressions comprise three-dimensionally rounded recessions.
15. (Amended) A display as in any of Claims 1 - 9 [Claim 10] wherein the wall comprises multiple grains having outer grain surfaces that at least partially define the wall's face, the depressions comprising valleys generally formed by the outer grain surfaces of adjoining ones of the grains.
17. (Amended) A display as in any of Claims 1 - 9 [Claim 10] wherein the depressions comprise recessions generally shaped like notches, each extending partway across the wall's face and defined by first and second notch surfaces that intersect each other.
19. (Amended) A display as in any of Claims 1 - 9 [Claim 10] wherein the depressions comprise trenches, each extending partway across the wall's face.
20. (Amended) A display as in any of Claims 1 - 9 wherein the [roughness in the wall's face comprises] protuberances [in the wall's face] are situated at locations generally random relative to one another.
21. (Amended) A display as in any of Claims 1 - 9 [Claim 20] wherein the protuberances overlie a generally smooth portion of the wall's face.
137
22. (Amended) A display as in any of Claims 1 - 9 [Claim 20] where the protuberances comprise ridges.
23. (Amended) A display as in any of Claims 1 - 9 [Claim 20] wherein the protuberances comprise spires.
24. (Amended) A display as in any of Claims 1 - 9 [Claim 20] wherein the protuberances comprise material of different chemical composition than material of the wall directly below the protuberances.
25. (Amended) A display as in any of Claims 1 - 9 [Claim 20] wherein the protuberances comprise particles.
26. (Amended) A display as in any of Claims 1 - 9 [Claim 20] wherein the protuberances comprise pillars.
96. (Amended) A flat-panel display comprising: a first plate structure for emitling electrons; a second plate structure, situated opposite the first plate structure, for producing an image upon receiving electrons emitted by the first plate structure; and a spacer situated between the plate structures, the spacer comprising a main spacer body having a rough face in which there are multiple depressions generally shaped as notches, each extending only partway across the wall's face.
102. (Amended) A flat-panel display comprising: a first plate structure for emitting electrons; a second plate structure, situated opposite the first plate structure, for producing
138 an image upon receiving electrons emitted by the first plate structure; and a spacer situated between the plate structures, the spacer comprising an electrically non-insulating main spacer wall having a rough face in which there are (a) depressions generally shaped as trenches or/and (b) protuberances generally shaped as ridges, each trench or ridge extending only partway across the wall's face.
108. (Amended) A method comprising the steps of: providing a spacer comprising a spacer wall having a face that has roughness which, as approximated by identical parallel cylindrical pores of pore diameter dp, corresponds to a wall porosity of at least 10% along the wall's face and a pore height hP
of at least 15% of pore height parameter IIMD that equals j2dp£2OMO I eEAV , where e is
the electron charge, S2DMD is the median departure energy of secondary electrons emitted
by the wall, and EAv is electric field strength, the roughness in the wall's face comprising depressions or/and protuberances in the wall's face, each depression or protuberance extending only partway across the wall's face; and positioning the spacer between first and second plate structures of a flat-panel display in which, during operation of the display, the second plate structure produces an image upon receiving electrons emitted by the first plate structure as an electric field of average strength EAv is directed from the second plate structure to the first plate structure. ~
139
PCT/US1999/029354 1998-12-11 1999-12-08 Spacer with rough face for flat panel display WO2000034973A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/210,085 1998-12-11
US09/210,085 US6617772B1 (en) 1998-12-11 1998-12-11 Flat-panel display having spacer with rough face for inhibiting secondary electron escape

Publications (2)

Publication Number Publication Date
WO2000034973A1 WO2000034973A1 (en) 2000-06-15
WO2000034973B1 true WO2000034973B1 (en) 2000-09-21

Family

ID=22781525

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/029354 WO2000034973A1 (en) 1998-12-11 1999-12-08 Spacer with rough face for flat panel display

Country Status (4)

Country Link
US (2) US6617772B1 (en)
MY (1) MY127542A (en)
TW (1) TW514947B (en)
WO (1) WO2000034973A1 (en)

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US6861798B1 (en) * 1999-02-26 2005-03-01 Candescent Technologies Corporation Tailored spacer wall coatings for reduced secondary electron emission
TW483025B (en) * 2000-10-24 2002-04-11 Nat Science Council Formation method of metal tip electrode field emission structure
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JP2005302570A (en) * 2004-04-13 2005-10-27 Toshiba Corp Image display device and its manufacturing method
JP4745720B2 (en) * 2004-06-03 2011-08-10 キヤノン株式会社 Film forming method, and spacer and thin flat panel display manufacturing method using the same
US7704115B2 (en) * 2004-08-04 2010-04-27 Canon Kabushiki Kaisha Supporting structure, method of manufacturing supporting structure, and display apparatus using the same
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KR20070046664A (en) * 2005-10-31 2007-05-03 삼성에스디아이 주식회사 Spacer and electron emission display device having the same
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CN111748769B (en) * 2020-06-03 2022-08-12 西安空间无线电技术研究所 Method for reducing secondary electron emission coefficient of silver surface high-energy area

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Also Published As

Publication number Publication date
US6617772B1 (en) 2003-09-09
TW514947B (en) 2002-12-21
US7090554B1 (en) 2006-08-15
WO2000034973A1 (en) 2000-06-15
MY127542A (en) 2006-12-29

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