EP0794551A1 - Elektronerstrahlablenksystem für eine Kathoderstrahlröhre - Google Patents

Elektronerstrahlablenksystem für eine Kathoderstrahlröhre Download PDF

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Publication number
EP0794551A1
EP0794551A1 EP96400495A EP96400495A EP0794551A1 EP 0794551 A1 EP0794551 A1 EP 0794551A1 EP 96400495 A EP96400495 A EP 96400495A EP 96400495 A EP96400495 A EP 96400495A EP 0794551 A1 EP0794551 A1 EP 0794551A1
Authority
EP
European Patent Office
Prior art keywords
coils
separator
diverter according
saddle
deflection coils
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
EP96400495A
Other languages
English (en)
French (fr)
Other versions
EP0794551B1 (de
Inventor
Alain Dossot
Christophe Mathey
Alain Vougny
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.)
Thomson Tubes and Displays SA
Original Assignee
Thomson Tubes and Displays SA
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 Tubes and Displays SA filed Critical Thomson Tubes and Displays SA
Priority to EP96400495A priority Critical patent/EP0794551B1/de
Priority to DE69615334T priority patent/DE69615334T2/de
Priority to US08/807,844 priority patent/US5818159A/en
Priority to SG9700674A priority patent/SG97754A1/en
Priority to KR1019970007345A priority patent/KR100464705B1/ko
Priority to JP9068970A priority patent/JPH103865A/ja
Priority to MYPI97000958A priority patent/MY113644A/en
Priority to MXPA/A/1997/001774A priority patent/MXPA97001774A/xx
Priority to CNB971116334A priority patent/CN1148779C/zh
Publication of EP0794551A1 publication Critical patent/EP0794551A1/de
Priority to HK98103094A priority patent/HK1003919A1/xx
Application granted granted Critical
Publication of EP0794551B1 publication Critical patent/EP0794551B1/de
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
    • H01J29/70—Arrangements for deflecting ray or beam
    • H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
    • H01J29/76—Deflecting by magnetic fields only
    • H01J29/762—Deflecting by magnetic fields only using saddle coils or printed windings
    • 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
    • H01J29/82—Mounting, supporting, spacing, or insulating electron-optical or ion-optical arrangements
    • H01J29/823—Mounting, supporting, spacing, or insulating electron-optical or ion-optical arrangements around the neck of the tube
    • H01J29/826—Deflection arrangements

Definitions

  • FIG. 1 shows a deflection system also called a deflector, comprising a pair of horizontal deflection coils 3 in the form of a saddle, a pair of vertical deflection coils 4 also in the form of a saddle, isolated from the previous one by a separator 2; a ring of ferromagnetic material 5 is placed around the coils 3 and 4.
  • the assembly is arranged on the neck 8 of a cathode ray tube 6, of main axis Z, in order to deflect the electron beams coming from the barrel 7, along the axes X and Y, so that they explore the screen surface 9 of the tube.
  • the deflection coils are arranged on the body of the separator and their relative positioning is precisely adjusted so as to generate deflection fields of desired conformation. Once this adjustment has been made, the coils must remain in place until the subsequent final immobilization stage on the separator, a stage generally carried out by bonding the coils to the body of the separator.
  • Figures 2 and 3 show how are maintained, in the prior art, the vertical deflection coils 4 on the separator 2.
  • the front 10 of the coils is inserted in the housing formed by the wall of the separator, at least one lug 13 now the front of the coils and their position along the Z axis, while a tooth 12 ensures the position along the Y axis of the part 10; the rear 11 of the coils is then adjusted against the rear of the substantially cylindrical separator, the whole is then held in position by surrounding the parts 11 with an adhesive 15.
  • the two coils are separated by an edge 14 extending in the YZ plan.
  • the adjustment of the position of the coils before the bonding phase on the body of the separator can be modified during the manipulations of the pre-adjusted deflector, either by the rotation of the front part 11 around the Z axis according to an amplitude 16 depending on the shapes of the coils and the tolerances allowed, ie displacements of the rear 11 in the XY plane, the manufacturing tolerances leaving a gap 17 between the internal surface of 11 and the surface of the separator.
  • the deflector according to the invention has a separator whose particularity is to have on at least one of its surfaces the means for positioning and holding a pair of deflection coil, these means ensuring the maintenance of the adjustment. initial coils until the bonding phase of said coils on the separator.
  • These means are produced by molding the material of the separator during the production of the latter and therefore do not require the use of adhesive or additional part.
  • the blocking of the front part in rotation about the Z axis and in position along the Y axis is ensured by at least two lugs 20 arranged on the surface of the separator 28 such that they each come at at least one point 21 into contact with the coils in the internal window 22 free of conductor.
  • the blocking of the front part of each coil is ensured by at least one edge extending over the surface of the separator, so that its ends come into contact with the coil in the window free of conductor of said coil.
  • the final design of the deflection coils goes through iteration steps, for example to perfectly adapt the convergence of the electron beams on the screen of the tube; to introduce these modifications, if necessary, without having to modify the mold for manufacturing the separators, an extremely expensive mold to manufacture, it is customary to modify the geometric distribution of the conductors, which involves modifying the shape of the internal window of the coil. It was noted that the iteration operations could lead to geometric modifications of the internal window of the coils rather located in their middle or rear part without it being necessary to modify the part located at the front of the separator, i.e. - say its most flared part.
  • the means for locking in rotation of the front of the coils are preferably arranged on the surface of the separator so as to come into contact with the coils in the part of the window rather situated towards the front of the separator: thus the designer will be able to introduce changes in the conformation of the fields without it being necessary to move the means of blocking 20 on the body of the separator and therefore having to make a new mold to manufacture said separator.
  • To immobilize the parts of the coils which are located on the substantially cylindrical rear part of the housing separator are produced by molding so that the edges of the coils engage under slight stress in these housings. In the example illustrated by FIGS.
  • the edge 14 for separating the vertical deflection coils is such that its rear part 30 is shaped so as to produce a substantially planar wall 33, parallel to the plane XZ.
  • the end 35 of the wall is bevelled so as to favor the insertion of the rear part 30 into the space provided between the wall 33 and the surface of the separator.
  • This wall is located at a distance 32 from the surface of the separator, a distance substantially equal to the thickness of the coil which is intended to be housed below.
  • This wall may extend on either side of each of the edges 14. In this way, the rear 11 of the coils 4 will be housed under stress under these walls 33 which will keep them in their position along the axes X and Y until the bonding step.
  • the rear part of the edge 14 is shaped so as to produce a curved wall 33 substantially parallel to the cylindrical surface of the separator, the curved shape of these walls being adapted to avoid that , by reaction to the stress, the coils do not come out during manipulation of the housing in which they are inserted
  • the embodiments described above are not limiting; thus several parts of each of the edges 14 can be shaped to form several walls 33; similarly the means described for positioning and maintaining vertical deflection coils are similarly adapted to horizontal deflection coils provided that they are placed on the internal surface of the separator.

Landscapes

  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
EP96400495A 1996-03-08 1996-03-08 Elektronerstrahlablenksystem für eine Kathoderstrahlröhre Expired - Lifetime EP0794551B1 (de)

Priority Applications (10)

Application Number Priority Date Filing Date Title
EP96400495A EP0794551B1 (de) 1996-03-08 1996-03-08 Elektronerstrahlablenksystem für eine Kathoderstrahlröhre
DE69615334T DE69615334T2 (de) 1996-03-08 1996-03-08 Elektronerstrahlablenksystem für eine Kathoderstrahlröhre
US08/807,844 US5818159A (en) 1996-03-08 1997-02-26 Electron beam deflection system for a cathode ray tube
KR1019970007345A KR100464705B1 (ko) 1996-03-08 1997-03-06 음극선관용전자빔편향시스템
SG9700674A SG97754A1 (en) 1996-03-08 1997-03-06 Electron-beam deflection system for a cathode-ray tube
MYPI97000958A MY113644A (en) 1996-03-08 1997-03-07 Electron-beam deflection system for a cathode-ray tube
JP9068970A JPH103865A (ja) 1996-03-08 1997-03-07 陰極線管用偏向ヨーク
MXPA/A/1997/001774A MXPA97001774A (en) 1996-03-08 1997-03-07 Electron beam deviation system for a catodi ray tube
CNB971116334A CN1148779C (zh) 1996-03-08 1997-03-08 阴极射线管的电子束偏转系统
HK98103094A HK1003919A1 (en) 1996-03-08 1998-04-15 Electron-beam deflection system for a cathode-ray tube

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP96400495A EP0794551B1 (de) 1996-03-08 1996-03-08 Elektronerstrahlablenksystem für eine Kathoderstrahlröhre
US08/807,844 US5818159A (en) 1996-03-08 1997-02-26 Electron beam deflection system for a cathode ray tube

Publications (2)

Publication Number Publication Date
EP0794551A1 true EP0794551A1 (de) 1997-09-10
EP0794551B1 EP0794551B1 (de) 2001-09-19

Family

ID=26144022

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96400495A Expired - Lifetime EP0794551B1 (de) 1996-03-08 1996-03-08 Elektronerstrahlablenksystem für eine Kathoderstrahlröhre

Country Status (3)

Country Link
US (1) US5818159A (de)
EP (1) EP0794551B1 (de)
JP (1) JPH103865A (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6278348B1 (en) * 1999-11-19 2001-08-21 Sony Corporation Deflection yoke
US6624560B2 (en) 2001-05-22 2003-09-23 Sony Corporation Deflection yoke
KR20040010112A (ko) * 2002-07-22 2004-01-31 삼성전기주식회사 수직편향코일 고정구조를 갖는 편향 요크

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2353951A1 (fr) * 1976-06-01 1977-12-30 Sony Corp Deviateur pour tube cathodique
EP0660365A1 (de) * 1993-12-22 1995-06-28 Sony Corporation Ablenkungsvorrichtung
EP0690471A1 (de) * 1994-07-01 1996-01-03 THOMSON TUBES & DISPLAYS S.A. Elektronenstrahl-Ablenksystem für Kathodenstrahlröhren
EP0690470A1 (de) * 1994-07-01 1996-01-03 THOMSON TUBES & DISPLAYS S.A. Elektronenstrahl-Ablenksystem für Kathodenstrahlröhren

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2353951A1 (fr) * 1976-06-01 1977-12-30 Sony Corp Deviateur pour tube cathodique
EP0660365A1 (de) * 1993-12-22 1995-06-28 Sony Corporation Ablenkungsvorrichtung
EP0690471A1 (de) * 1994-07-01 1996-01-03 THOMSON TUBES & DISPLAYS S.A. Elektronenstrahl-Ablenksystem für Kathodenstrahlröhren
EP0690470A1 (de) * 1994-07-01 1996-01-03 THOMSON TUBES & DISPLAYS S.A. Elektronenstrahl-Ablenksystem für Kathodenstrahlröhren

Also Published As

Publication number Publication date
EP0794551B1 (de) 2001-09-19
JPH103865A (ja) 1998-01-06
US5818159A (en) 1998-10-06

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