EP0803892A3 - Electron generating apparatus, image forming apparatus, method of manufacturing the same and method of adjusting characteristics thereof - Google Patents

Electron generating apparatus, image forming apparatus, method of manufacturing the same and method of adjusting characteristics thereof Download PDF

Info

Publication number
EP0803892A3
EP0803892A3 EP97300559A EP97300559A EP0803892A3 EP 0803892 A3 EP0803892 A3 EP 0803892A3 EP 97300559 A EP97300559 A EP 97300559A EP 97300559 A EP97300559 A EP 97300559A EP 0803892 A3 EP0803892 A3 EP 0803892A3
Authority
EP
European Patent Office
Prior art keywords
electron
generating apparatus
electron generating
voltage
image forming
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP97300559A
Other languages
German (de)
French (fr)
Other versions
EP0803892B1 (en
EP0803892A2 (en
Inventor
Eiji Yamaguchi
Hidetoshi Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Publication of EP0803892A2 publication Critical patent/EP0803892A2/en
Publication of EP0803892A3 publication Critical patent/EP0803892A3/en
Application granted granted Critical
Publication of EP0803892B1 publication Critical patent/EP0803892B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/022—Manufacture of electrodes or electrode systems of cold cathodes
    • H01J9/027—Manufacture of electrodes or electrode systems of cold cathodes of thin film cathodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0285—Improving the quality of display appearance using tables for spatial correction of display data
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/029—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Cold Cathode And The Manufacture (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

It is an object of this invention to provide an electron generating apparatus which eliminates, with a simple process, variations in electron-emitting characteristics of electron sources caused by various factors, a method of adjusting the characteristics of the electron generating apparatus, a method of manufacturing the electron generating apparatus, and an image forming apparatus using the electron generating apparatus. Characteristic measuring voltages are applied from pulse generators (6, 7) to each surface-conduction emission device of a display panel (1), so that the electron-emitting characteristics are measured by a current detector (12). A pulse peak value setting circuit (8) is controlled to output a voltage signal having a peak value determined in the above manner, and characteristic shift voltages are applied from the pulse generators (6, 7) to the surface-conduction emission device. With this process, the electron-emitting characteristics of the surface-conduction emission devices are equalized. The characteristic shift voltage is higher than the characteristic measuring voltage, and the characteristic measuring voltage is higher than a driving voltage.
EP19970300559 1996-02-23 1997-01-29 Method of adjusting the characteristics of an electron generating apparatus and method of manufacturing the same. Expired - Lifetime EP0803892B1 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP3632896 1996-02-23
JP3632896 1996-02-23
JP36328/96 1996-02-23
JP33245496 1996-12-12
JP33245496 1996-12-12
JP332454/96 1996-12-12

Publications (3)

Publication Number Publication Date
EP0803892A2 EP0803892A2 (en) 1997-10-29
EP0803892A3 true EP0803892A3 (en) 1999-02-03
EP0803892B1 EP0803892B1 (en) 2003-04-23

Family

ID=26375371

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970300559 Expired - Lifetime EP0803892B1 (en) 1996-02-23 1997-01-29 Method of adjusting the characteristics of an electron generating apparatus and method of manufacturing the same.

Country Status (2)

Country Link
EP (1) EP0803892B1 (en)
DE (1) DE69721116T2 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6097356A (en) * 1997-07-01 2000-08-01 Fan; Nongqiang Methods of improving display uniformity of thin CRT displays by calibrating individual cathode
US6534924B1 (en) 1998-03-31 2003-03-18 Canon Kabushiki Kaisha Method and apparatus for manufacturing electron source, and method manufacturing image forming apparatus
JP3087849B1 (en) * 1998-06-10 2000-09-11 キヤノン株式会社 Method of manufacturing electron source, apparatus for manufacturing the same, and method of manufacturing image forming apparatus
JP3087847B1 (en) 1998-03-31 2000-09-11 キヤノン株式会社 Method and apparatus for manufacturing electron source and method for manufacturing image forming apparatus
US6213834B1 (en) 1998-04-23 2001-04-10 Canon Kabushiki Kaisha Methods for making electron emission device and image forming apparatus and apparatus for making the same
WO2000014710A1 (en) * 1998-09-04 2000-03-16 Nongqiang Fan Methods of improving display uniformity of thin crt displays by calibrating individual cathode
JP3733308B2 (en) 2000-09-29 2006-01-11 キヤノン株式会社 Manufacturing method of image display device
JP3673761B2 (en) 2001-02-09 2005-07-20 キヤノン株式会社 Method of adjusting characteristics of electron source, method of manufacturing electron source, method of adjusting characteristics of image display device, and method of manufacturing image display device
US6712660B2 (en) * 2001-08-06 2004-03-30 Canon Kabushiki Kaisha Method and apparatus for adjusting characteristics of electron source, and method for manufacturing electron source
JP3667264B2 (en) 2001-08-27 2005-07-06 キヤノン株式会社 Multi-electron source characteristic adjusting method and apparatus, and multi-electron source manufacturing method
JP5022547B2 (en) 2001-09-28 2012-09-12 キヤノン株式会社 Image forming apparatus characteristic adjusting method, image forming apparatus manufacturing method, image forming apparatus, and characteristic adjusting apparatus
JP4115330B2 (en) 2002-05-08 2008-07-09 キヤノン株式会社 Manufacturing method of image forming apparatus
JP4027284B2 (en) 2002-07-26 2007-12-26 キヤノン株式会社 Manufacturing method of image display device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02257551A (en) * 1989-03-30 1990-10-18 Canon Inc Image forming device
US5066883A (en) * 1987-07-15 1991-11-19 Canon Kabushiki Kaisha Electron-emitting device with electron-emitting region insulated from electrodes
JPH0428137A (en) * 1990-05-23 1992-01-30 Canon Inc Multi-electron beam source and image display device using the same
JPH0794103A (en) * 1993-09-24 1995-04-07 Hitachi Ltd Metal-insulator-metal electron-emitting device and method of driving applied equipment such as electron-beam emitting device using the same
EP0651418A1 (en) * 1993-10-28 1995-05-03 Canon Kabushiki Kaisha Electron source, image forming apparatus using the same, method of manufacturing the same, and method of driving the same
EP0785564A1 (en) * 1996-01-16 1997-07-23 Canon Kabushiki Kaisha Electron generating apparatus, image forming apparatus, and method of manufacturing and adjusting the same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6431332A (en) 1987-07-28 1989-02-01 Canon Kk Electron beam generating apparatus and its driving method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5066883A (en) * 1987-07-15 1991-11-19 Canon Kabushiki Kaisha Electron-emitting device with electron-emitting region insulated from electrodes
JPH02257551A (en) * 1989-03-30 1990-10-18 Canon Inc Image forming device
JPH0428137A (en) * 1990-05-23 1992-01-30 Canon Inc Multi-electron beam source and image display device using the same
JPH0794103A (en) * 1993-09-24 1995-04-07 Hitachi Ltd Metal-insulator-metal electron-emitting device and method of driving applied equipment such as electron-beam emitting device using the same
EP0651418A1 (en) * 1993-10-28 1995-05-03 Canon Kabushiki Kaisha Electron source, image forming apparatus using the same, method of manufacturing the same, and method of driving the same
EP0785564A1 (en) * 1996-01-16 1997-07-23 Canon Kabushiki Kaisha Electron generating apparatus, image forming apparatus, and method of manufacturing and adjusting the same

Non-Patent Citations (7)

* Cited by examiner, † Cited by third party
Title
DITTMER G: "ELECTRICAL CONDUCTION AND ELECTRON EMISSION OF DISCONTINUOUS THIN FILMS", THIN SOLID FILMS, no. 9, 1 January 1972 (1972-01-01), pages 317 - 328, XP000561154 *
ELINSON M L ET AL: "THE EMISSION OF HOT ELECTRONS AND THE FIELD EMISSION OF ELECTRONS FROM TIN OXIDE", RADIO ENGINEERING AND ELECTRONIC PHYSICS, 1 August 1965 (1965-08-01), pages 1290 - 1296, XP000577258 *
MEAD C A: "OPERATION OF TUNNEL-EMISSION DEVICES", JOURNAL OF APPLIED PHYSICS, vol. 32, no. 4, 1 April 1961 (1961-04-01), pages 646 - 652, XP000560583 *
PATENT ABSTRACTS OF JAPAN vol. 015, no. 003 (E - 1019) 7 January 1991 (1991-01-07) *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 196 (E - 1200) 12 May 1992 (1992-05-12) *
PATENT ABSTRACTS OF JAPAN vol. 095, no. 007 31 August 1995 (1995-08-31) *
SPINDT C A ET AL: "PHYSICAL PROPERTIES OF THIN-FILM FIELD EMISSION CATHODES WITH MOLYBDENUM CONES", JOURNAL OF APPLIED PHYSICS, vol. 47, no. 12, 1 December 1976 (1976-12-01), pages 5248 - 5263, XP000560520 *

Also Published As

Publication number Publication date
DE69721116D1 (en) 2003-05-28
EP0803892B1 (en) 2003-04-23
EP0803892A2 (en) 1997-10-29
DE69721116T2 (en) 2003-12-04

Similar Documents

Publication Publication Date Title
US6060840A (en) Method and control circuit for controlling an emission current in a field emission display
US20020017962A1 (en) Modulation circuit and image display using the same
CA2183824A1 (en) Electron Generating Device, Image Display Apparatus, Driving Circuit Therefor, and Driving Method
CA2189391A1 (en) Electron generating apparatus, image forming apparatus, and method of manufacturing and adjusting the same
EP0837444A3 (en) Gray-scale signal generating circuit for a matrix-addressed liquid crystal display
KR970067066A (en) Electron beam generating device, image display device having the same, and driving method thereof
EP0395387A3 (en) Display drive circuit
EP0596242B1 (en) Modulated intensity FED display
US4590368A (en) Digital gain adjuster circuit for photomultiplier tubes
KR100498741B1 (en) Method and apparatus for adjusting characteristics of multi electron source
US4651058A (en) Apparatus and method of operation for an electron beam source
US20090256866A1 (en) Image display apparatus
EP0982928A2 (en) Halftone image device and its driving circuit
EP0665684A2 (en) An apparatus and method for driving a liquid crystal display
US5223799A (en) Parabolic signal generator
JP2955972B2 (en) Video signal processing device
KR930010029B1 (en) Time base circuits and television receivers
EP0948022A3 (en) Method and apparatus for manufacturing electron source, and method of manufacturing image forming apparatus
US6479938B1 (en) Driving method for electric-field electron emission apparatus
EP0164979B1 (en) Timebase circuit
SU1711346A1 (en) Method of regulation of brightness of receiving cathode-ray tube and device to implement it
JPS6237174Y2 (en)
SU918891A1 (en) Method of checking non-linear amplitude distortions of tv-set brightness signal receiving network
RU1793386C (en) Oscillograph
JPS6237175Y2 (en)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB IT NL

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB IT NL

17P Request for examination filed

Effective date: 19990616

17Q First examination report despatched

Effective date: 19991117

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

RIC1 Information provided on ipc code assigned before grant

Free format text: 7H 01J 29/08 A, 7H 01J 29/46 B, 7H 01J 9/02 B, 7G 09G 3/22 B

RTI1 Title (correction)

Free format text: METHOD OF ADJUSTING THE CHARACTERISTICS OF AN ELECTRON GENERATING APPARATUS AND METHOD OF MANUFACTURING THE SAME.

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): DE FR GB IT NL

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 69721116

Country of ref document: DE

Date of ref document: 20030528

Kind code of ref document: P

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20040126

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20070115

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20070611

Year of fee payment: 11

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20080801

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080801

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080129

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20090121

Year of fee payment: 13

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20100930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100201

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20130131

Year of fee payment: 17

Ref country code: GB

Payment date: 20130123

Year of fee payment: 17

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69721116

Country of ref document: DE

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20140129

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69721116

Country of ref document: DE

Effective date: 20140801

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140801

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140129