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EP0452789B1 - Tube d'images couleurs avec un canon à électrons "inline" muni de moyens pour régler la focalisation - Google Patents

Tube d'images couleurs avec un canon à électrons "inline" muni de moyens pour régler la focalisation Download PDF

Info

Publication number
EP0452789B1
EP0452789B1 EP91105658A EP91105658A EP0452789B1 EP 0452789 B1 EP0452789 B1 EP 0452789B1 EP 91105658 A EP91105658 A EP 91105658A EP 91105658 A EP91105658 A EP 91105658A EP 0452789 B1 EP0452789 B1 EP 0452789B1
Authority
EP
European Patent Office
Prior art keywords
electrode
lens
beams
focus
center
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.)
Expired - Lifetime
Application number
EP91105658A
Other languages
German (de)
English (en)
Other versions
EP0452789A3 (en
EP0452789A2 (fr
Inventor
Loren Lee Maninger
Bruce George Marks
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.)
Technicolor USA Inc
Original Assignee
Thomson Consumer Electronics 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 Thomson Consumer Electronics Inc filed Critical Thomson Consumer Electronics Inc
Publication of EP0452789A2 publication Critical patent/EP0452789A2/fr
Publication of EP0452789A3 publication Critical patent/EP0452789A3/en
Application granted granted Critical
Publication of EP0452789B1 publication Critical patent/EP0452789B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/48—Electron guns
    • H01J29/50—Electron guns two or more guns in a single vacuum space, e.g. for plural-ray tube
    • H01J29/503—Three or more guns, the axes of which lay in a common plane
    • 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
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/48—Electron guns
    • H01J29/50—Electron guns two or more guns in a single vacuum space, e.g. for plural-ray tube
    • 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
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/58—Arrangements for focusing or reflecting ray or beam
    • H01J29/62—Electrostatic lenses
    • H01J29/622—Electrostatic lenses producing fields exhibiting symmetry of revolution
    • H01J29/624—Electrostatic lenses producing fields exhibiting symmetry of revolution co-operating with or closely associated to an electron gun
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/48—Electron guns
    • H01J2229/4844—Electron guns characterised by beam passing apertures or combinations
    • H01J2229/4848—Aperture shape as viewed along beam axis
    • H01J2229/4872—Aperture shape as viewed along beam axis circular
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/48—Electron guns
    • H01J2229/4844—Electron guns characterised by beam passing apertures or combinations
    • H01J2229/4848—Aperture shape as viewed along beam axis
    • H01J2229/4896—Aperture shape as viewed along beam axis complex and not provided for

Definitions

  • FIGURES 8 and 9 show an alternative G4 electrode 42′ which has a reduced thickness at the side apertures 70′ and 72′, as discussed above.
  • another alternative G4 electrode 42 ⁇ shown in FIGURE 10
  • the thickness of the electrode is reduced at the center aperture 71 ⁇ .
  • Two more alternative G4 electrodes, 142 and 242, are shown in FIGURES 11 and 12, respectively.
  • the G4 electrode 142 is thinned on both surfaces at the side beams, and the G4 electrode 242 is thinned on both surfaces at the center aperture.
  • the specific G4 electrode embodiment selected will depend on the plots that are developed for a particular type of electron gun.
  • the G5B electrode 45 comprises a cup-shaped portion 54, having three apertures in the bottom thereof.
  • a plate 56 having three inline apertures therein, closes the open end of the cup-shaped portion 54.
  • the plate 56 includes extrusions extending therefrom in alignment with the apertures.
  • Each extrusion includes two sector portions 58.
  • the two sector portions 58 are located opposite each other, and each sector portion 58 encompasses approximately 85 degrees of the circumference of a cylinder.

Landscapes

  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Electron Sources, Ion Sources (AREA)

Claims (4)

  1. La présente invention décrit un tube couleur (10) doté d'un écran d'affichage (22) et d'un canon à électrons (26) générant et dirigeant vers ledit écran trois faisceaux d'électrons en ligne, un faisceau central et deux faisceaux latéraux.
    Ledit canon à électrons est doté d'au moins six électrodes (36, 48) constituant trois dispositifs de focalisation (L1-L3) disposés dans l'ordre à partir de trois cathodes (34), le premier dispositif de focalisation (L1) correspondant à la zone de formation de faisceaux dudit canon, ledit deuxième dispositif de focalisation (L2) comportant au moins une électrode (42) afin de délivrer des faisceaux asymétriques à un troisième dispositif de focalisation (L3), celui-ci constituant le dispositif de focalisation principal commun pour les trois faisceaux.
    Ledit tube couleur (10) se caractérise en ce que :
    une (48) des électrodes (44, 48) dudit troisième dispositif de focalisation (L3) est formé de manière à assurer l'essentiel de la correction de focalisation pour chaque faisceau d'électrons ;
    une électrode (42, 42′, 42˝, 142, 242) dudit deuxième dispositif de focalisation (L2) est dotée d'un moyen assurant la correction de focalisation résiduelle nécessaire afin de corriger complètement chaque faisceau d'électrons, ladite électrode dudit deuxième dispositif de focalisation se présentant sous la forme d'une plaque avec trois ouvertures en ligne (70-72), une ouverture centrale (71, 71′, 71˝) et deux ouvertures latérales (70, 72, 70′, 72′), permettant le passage desdits trois faisceaux d'électrons, la forme des deux ouvertures latérales étant différente de celle de l'ouverture centrale, ou ladite électrode dudit deuxième dispositif de focalisation étant d'épaisseur différente au niveau de l'ouverture centrale par rapport aux ouvertures latérales.
  2. Tube couleur (10) selon la revendication 1, caractérisé en ce que les éléments (45, 47) disposés entre lesdits deuxième (L2) et troisième (L3) dispositifs de focalisation constituent un dispositif de focalisation quadripôle dans le trajet des faisceaux d'électrons respectifs.
  3. Tube couleur (10) selon la revendication 1 ou 2, caractérisé en ce que ladite électrode (42, 42˝, 242) dudit deuxième dispositif de focalisation (L2) est moins épaisse au niveau de l'ouverture centrale (71, 71˝) par rapport aux deux ouvertures latérales (70, 72).
  4. Tube couleur (10) selon la revendication 1 ou 2, caractérisé en ce que ladite électrode (42′, 142) dudit deuxième dispositif de focalisation (L2) est moins épaisse au niveau des ouvertures latérales (70′, 72′) par rapport à l'ouverture centrale (71′).
EP91105658A 1990-04-16 1991-04-10 Tube d'images couleurs avec un canon à électrons "inline" muni de moyens pour régler la focalisation Expired - Lifetime EP0452789B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US50953790A 1990-04-16 1990-04-16
US509537 1990-04-16

Publications (3)

Publication Number Publication Date
EP0452789A2 EP0452789A2 (fr) 1991-10-23
EP0452789A3 EP0452789A3 (en) 1992-02-12
EP0452789B1 true EP0452789B1 (fr) 1995-11-29

Family

ID=24027042

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91105658A Expired - Lifetime EP0452789B1 (fr) 1990-04-16 1991-04-10 Tube d'images couleurs avec un canon à électrons "inline" muni de moyens pour régler la focalisation

Country Status (10)

Country Link
EP (1) EP0452789B1 (fr)
JP (1) JP2616849B2 (fr)
KR (1) KR950002262B1 (fr)
CN (1) CN1041577C (fr)
CA (1) CA2039501C (fr)
DE (1) DE69114893T2 (fr)
MY (1) MY105411A (fr)
PL (1) PL165538B1 (fr)
RU (1) RU2025818C1 (fr)
TR (1) TR25229A (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06251722A (ja) * 1993-02-24 1994-09-09 Hitachi Ltd 陰極線管
FR2705164B1 (fr) * 1993-05-10 1995-07-13 Thomson Tubes & Displays Tube image couleurs à canons à électrons en ligne avec lentilles astigmatiques.
CN1054462C (zh) * 1994-06-30 2000-07-12 中华映管股份有限公司 彩色显像管的电子枪
JP3726402B2 (ja) * 1996-07-05 2005-12-14 ソニー株式会社 カラー陰極線管用インライン電子銃
KR19980040898A (ko) * 1996-11-30 1998-08-17 엄길용 인라인형 전자총의 통형전극
KR20030060616A (ko) * 2002-01-10 2003-07-16 엘지.필립스디스플레이(주) 칼라음극선관용 전자총
CN1306544C (zh) * 2004-01-05 2007-03-21 彩虹集团电子股份有限公司 调整彩色显像管电子束配列的工艺方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2509526B1 (fr) * 1981-07-10 1986-08-29 Rca Corp Perfectionnements apportes aux canons electroniques en ligne a lentille focale allongee pour tube image couleur
US4400649A (en) * 1981-07-10 1983-08-23 Rca Corporation Color picture tube having an improved expanded focus lens type inline electron gun
JPS58198830A (ja) * 1982-05-14 1983-11-18 Hitachi Ltd カラー受像管
NL8203322A (nl) * 1982-08-25 1984-03-16 Philips Nv Kleurenbeeldbuis.
JPH0630227B2 (ja) * 1983-12-28 1994-04-20 株式会社東芝 カラ−受像管用電子銃
FR2590724B1 (fr) * 1985-11-22 1988-01-08 Videocolor Dispositif de correction de l'effet de deviation du a une variation de la tension de focalisation dans un tube cathodique trichrome a cathodes en ligne
US4764704A (en) * 1987-01-14 1988-08-16 Rca Licensing Corporation Color cathode-ray tube having a three-lens electron gun
DE3854506T2 (de) * 1987-01-14 1996-04-04 Rca Thomson Licensing Corp Farbbildröhre mit einer Drei-Linsen-Elektronenkanone.
CN1013534B (zh) * 1987-04-08 1991-08-14 彩色图象公司 三色阴极射线管偏移效应的校正装置
US4737682A (en) * 1987-07-20 1988-04-12 Rca Corporation Color picture tube having an inline electron gun with an einzel lens
JP2690930B2 (ja) * 1988-02-26 1997-12-17 株式会社日立製作所 カラー陰極線管用電子銃

Also Published As

Publication number Publication date
KR950002262B1 (ko) 1995-03-15
DE69114893T2 (de) 1996-06-20
MY105411A (en) 1994-09-30
EP0452789A3 (en) 1992-02-12
JP2616849B2 (ja) 1997-06-04
CN1056016A (zh) 1991-11-06
JPH04230938A (ja) 1992-08-19
CA2039501C (fr) 1999-02-02
DE69114893D1 (de) 1996-01-11
EP0452789A2 (fr) 1991-10-23
KR910019103A (ko) 1991-11-30
PL165538B1 (pl) 1995-01-31
RU2025818C1 (ru) 1994-12-30
TR25229A (tr) 1993-01-01
PL289904A1 (en) 1992-02-10
CN1041577C (zh) 1999-01-06
CA2039501A1 (fr) 1991-10-17

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