EP0690471A1 - Elektronenstrahl-Ablenksystem für Kathodenstrahlröhren - Google Patents

Elektronenstrahl-Ablenksystem für Kathodenstrahlröhren Download PDF

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Publication number
EP0690471A1
EP0690471A1 EP94401503A EP94401503A EP0690471A1 EP 0690471 A1 EP0690471 A1 EP 0690471A1 EP 94401503 A EP94401503 A EP 94401503A EP 94401503 A EP94401503 A EP 94401503A EP 0690471 A1 EP0690471 A1 EP 0690471A1
Authority
EP
European Patent Office
Prior art keywords
separator
diverter according
deflection coils
coils
support edges
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
EP94401503A
Other languages
English (en)
French (fr)
Other versions
EP0690471B1 (de
Inventor
Jean-Philippe Descombes
Philippe Marotte
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 EP94401503A priority Critical patent/EP0690471B1/de
Priority to DE69414698T priority patent/DE69414698T2/de
Priority to AT94401503T priority patent/ATE173561T1/de
Priority to TW083108176A priority patent/TW331647B/zh
Priority to US08/464,431 priority patent/US5589729A/en
Priority to CZ19951684A priority patent/CZ287564B6/cs
Priority to KR1019950017737A priority patent/KR960005725A/ko
Priority to CA002153003A priority patent/CA2153003C/en
Priority to SG1995000780A priority patent/SG48690A1/en
Priority to RU95110771/09A priority patent/RU2216067C2/ru
Priority to CN95106890A priority patent/CN1068707C/zh
Priority to MYPI95001812A priority patent/MY112914A/en
Priority to PL95309454A priority patent/PL177264B1/pl
Priority to JP7167357A priority patent/JPH0850866A/ja
Publication of EP0690471A1 publication Critical patent/EP0690471A1/de
Application granted granted Critical
Publication of EP0690471B1 publication Critical patent/EP0690471B1/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
    • 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
    • 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

Definitions

  • the invention relates to a system for deflecting the electron beams for cathode ray tubes, and more particularly to the device ensuring both the support of the deflection coils and the mechanical rigidity of the system.
  • Such a deflection system also called a deflector, generally consists of a pair of vertical deflection coils, a pair of horizontal deflection coils and a ring of substantially frustoconical shape made of magnetic material intended to concentrate the flow created. by the coils.
  • the two pairs of deflection coils are electrically insulated by a separator, generally made of plastic, which also makes it possible to improve the mechanical rigidity of the deflection device, to fix the coils relative to each other and to adjust the together on the neck of the tube.
  • the separator consists of a main body, in one or more parts, substantially in the form of a funnel, and a flexible rear part conforming to the neck of the tube and intended to fix the position of the deflection system along the longitudinal axis. tube; this fixing is generally effected by means of a clamping collar placed above the flexible rear part.
  • the shapes of the deflection coils of the deflector installed on the neck of a cathode ray tube determine the shapes of the field lines and thereby how the electron beams from the barrel will be deflected.
  • the internal surface of the pair of vertical deflection coils rests on the external face of the separator and the external surface of the pair of horizontal deflection coils rests on the internal face of the separator; thus, during the manufacture of the deflector or during its installation on the neck of the tube, the mechanical stresses to which the coils are subjected do not deform them.
  • the thickness of the separator defined by the distance between its internal face and its external face, could be variable; manufactured by injecting plastic material into a mold, the separator was then a difficult part to manufacture, due to the complexity of the surfaces of the internal and external faces, and consuming a lot of material because comprising parts of great thickness, thickness depending on the relative shapes of the two pairs of coils.
  • the thickness of the separator could be constant; in this case the manufacture of the separator was simplified, but this characteristic had to be integrated at the level of the design of the deflection coils where it constituted a constraint which did not allow optimizing the shapes of said coils and thereby the fields created by these coils.
  • the invention intends to propose a separator whose internal and external faces are of simple design and making it possible to separate the shapes from the internal surface of the vertical deflection coils and the shapes of the outer surface of the horizontal deflection coils.
  • the deflector incorporating the invention comprises a pair of vertical deflection coils, a pair of horizontal deflection coils, a rigid separator insulating the pairs of deflection coils from one another and a ring of shaped ferromagnetic material.
  • substantially frustoconical disposed above at least a portion of the deflection coils characterized in that one of the faces of the separator has support edges on which one of the two pairs of coils is supported.
  • the distance between the two pairs of coils is guaranteed by the thickness of the separator.
  • this thickness was chosen to be constant; this constraint was found at the level of the design of the horizontal and vertical deflection coils, the shapes of these coils then being linked to each other. If, on the contrary, we chose to make these forms independent, the space between the two coils, which the separator had to fill was found to be of variable thickness; the internal and external faces of the separator due to their complexity made it difficult to manufacture, with thicknesses in large places, resulting in excessive weight and consumption of material In addition, in the latter case, any modification of the shape of a pair of coils, to adapt it to new characteristics, requires modifying the internal and / or external face of the separator and a change of the manufacturing mold.
  • the separator 2 has a front part A, used to ensure the maintenance of the front of the horizontal deflection coils 3 and the positioning of the deflector on the tube thanks to adjustable feet whose housings 30 are indicated on the face.
  • the separator then has a flared intermediate part B and a rear part C in the form of a cylindrical ring.
  • Figures 3 and 4 show an embodiment of the invention.
  • the internal 11 and external 10 faces of the separator are designed in revolution and the distance between the two faces is constant in order to have a simple shape to manufacture.
  • the internal surface of the vertical deflection coils rests against the external face 10 of the separator.
  • the bearing surfaces on the separator of the horizontal and vertical deflection coils, in the form of a saddle, are made independent of each other by ensuring that the pair of horizontal deflection coils does not rest on the internal face 11 but on elongated support edges arranged on this face 11.
  • These support edges are arranged along the intersection of radial planes containing the axis Z with the face 11; this arrangement is chosen for the sake of simplicity of production of the manufacturing molds and because it facilitates the placement of spoils necessary for demolding the parts.
  • the radial arrangement also has the advantage of better following the shape of the deflection coils, the structure of which is defined radially, in bundles of wires arranged at precise angles.
  • these support edges can be arranged in planes parallel to one of the main axes, as long as the surface of the teeth in contact with the coils constitutes generators supporting the external surface of these coils.
  • support edges are of unequal length. They can be arranged on the flared part of the separator like the support edges 20, 20 '; it is indeed in this zone that the horizontal deflection coils can deviate most from the vertical deflection coil. Certain support edges, such as edges 22, may however be located in the rear part in the form of a cylindrical ring of the separator, to support the rear bun of the horizontal deflection coil; other edges may extend from the front to the rear such as the support edges 21, 21 ', 21' '.
  • the support edges are arranged on the face 11 along the same planes of symmetry.
  • the support edges can be produced in the same molding step as the separator and therefore in the same plastic material as the latter; alternatively they can be arranged on the face 11 after molding the body of the separator and adhere to it, for example by gluing; in this case the material constituting the support edges may be different from that of the separator.
  • the height of a support edge is generally variable and is defined at each of its points by the distance that must be maintained between the horizontal and vertical deflection coils; the support edges 20 arranged on the internal face of the separator of a 90 cm screen diagonal tube manufactured by the company Thomson Tubes & Displays can thus, in certain places of the flared part B, reach a maximum height of 2 mm , while the thickness of the separator itself is of the order of 1mm.
  • Another advantage of this invention is the ease with which modification of the horizontal deflection coils can be implemented. work: it suffices to modify at certain points the height of the support edges without changing anything on faces 10 and 11.
  • the example of the application of the invention to a deflector whose coils of horizontal and vertical deflections are in the form of a saddle is not limiting; the invention can also be implemented without difficulty in saddle / torus type deflectors, that is to say comprising saddle-shaped horizontal deflection coils and vertical deflection coils arranged around the ring in ferromagnetic material 5.

Landscapes

  • Details Of Television Scanning (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
  • Clamps And Clips (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
EP94401503A 1994-07-01 1994-07-01 Elektronenstrahl-Ablenksystem für Kathodenstrahlröhren Expired - Lifetime EP0690471B1 (de)

Priority Applications (14)

Application Number Priority Date Filing Date Title
EP94401503A EP0690471B1 (de) 1994-07-01 1994-07-01 Elektronenstrahl-Ablenksystem für Kathodenstrahlröhren
DE69414698T DE69414698T2 (de) 1994-07-01 1994-07-01 Elektronenstrahl-Ablenksystem für Kathodenstrahlröhren
AT94401503T ATE173561T1 (de) 1994-07-01 1994-07-01 Elektronenstrahl-ablenksystem für kathodenstrahlröhren
TW083108176A TW331647B (en) 1994-07-01 1994-09-05 Electron beam deflection system
US08/464,431 US5589729A (en) 1994-07-01 1995-06-05 Deflection yoke liner with support ridges
CZ19951684A CZ287564B6 (en) 1994-07-01 1995-06-27 Cathode-ray tube deflecting yoke
KR1019950017737A KR960005725A (ko) 1994-07-01 1995-06-28 지지릿지를 갖는 편향요크라이너
CA002153003A CA2153003C (en) 1994-07-01 1995-06-29 A deflection yoke liner with support ridges
SG1995000780A SG48690A1 (en) 1994-07-01 1995-06-30 A deflection yoke liner with support ridges
RU95110771/09A RU2216067C2 (ru) 1994-07-01 1995-06-30 Отклоняющая система для электронно-лучевой трубки
CN95106890A CN1068707C (zh) 1994-07-01 1995-06-30 带支撑脊状件的偏转系统衬垫
MYPI95001812A MY112914A (en) 1994-07-01 1995-06-30 A deflection yoke liner with support ridges
PL95309454A PL177264B1 (pl) 1994-07-01 1995-06-30 Zespół cewek odchylających do lampy elektronopromieniowej
JP7167357A JPH0850866A (ja) 1994-07-01 1995-07-03 偏向ヨーク

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP94401503A EP0690471B1 (de) 1994-07-01 1994-07-01 Elektronenstrahl-Ablenksystem für Kathodenstrahlröhren

Publications (2)

Publication Number Publication Date
EP0690471A1 true EP0690471A1 (de) 1996-01-03
EP0690471B1 EP0690471B1 (de) 1998-11-18

Family

ID=8218024

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94401503A Expired - Lifetime EP0690471B1 (de) 1994-07-01 1994-07-01 Elektronenstrahl-Ablenksystem für Kathodenstrahlröhren

Country Status (14)

Country Link
US (1) US5589729A (de)
EP (1) EP0690471B1 (de)
JP (1) JPH0850866A (de)
KR (1) KR960005725A (de)
CN (1) CN1068707C (de)
AT (1) ATE173561T1 (de)
CA (1) CA2153003C (de)
CZ (1) CZ287564B6 (de)
DE (1) DE69414698T2 (de)
MY (1) MY112914A (de)
PL (1) PL177264B1 (de)
RU (1) RU2216067C2 (de)
SG (1) SG48690A1 (de)
TW (1) TW331647B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0794551A1 (de) * 1996-03-08 1997-09-10 THOMSON TUBES & DISPLAYS S.A. Elektronerstrahlablenksystem für eine Kathoderstrahlröhre
EP0821388A1 (de) * 1996-07-25 1998-01-28 THOMSON TUBES & DISPLAYS S.A. Einrichtung zur Befestigung einer Ablenkeinheit auf dem Hals einer Kathodenstrahlröhre
FR2795231A1 (fr) * 1999-06-18 2000-12-22 Thomson Tubes & Displays Dispositif de deflexion pour tube a rayons cathodiques
SG97754A1 (en) * 1996-03-08 2003-08-20 Thomson Tubes & Displays Electron-beam deflection system for a cathode-ray tube

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010089758A (ko) * 1999-11-04 2001-10-08 요트.게.아. 롤페즈 음극선관을 위한 편향 유닛 및 안장형 편향 코일을제조하는 방법
CN113709957B (zh) * 2021-08-27 2022-04-01 泛华检测技术有限公司 一种小型高能x射线装置及方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1233067B (de) * 1964-02-05 1967-01-26 Telefunken Patent Ablenkspuleneinheit fuer Fernsehgeraete
EP0540113A1 (de) * 1991-11-01 1993-05-05 Koninklijke Philips Electronics N.V. Bildröhrenablenkeinheit mit Vertikalablenkspulen vom Semi-Satteltyp

Family Cites Families (17)

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JPS5540688Y2 (de) * 1975-12-24 1980-09-22
NL7908000A (nl) * 1979-11-01 1981-06-01 Philips Nv Afbuigjuk.
US4338584A (en) * 1980-11-24 1982-07-06 Rca Corporation Television deflection yoke mount
DE3767330D1 (de) * 1986-03-19 1991-02-21 Toshiba Kawasaki Kk Ablenkvorrichtung fuer eine kathodenstrahlroehre.
NL8601501A (nl) * 1986-06-10 1988-01-04 Philips Nv Electromagnetische, direct op een drager gewikkelde, afbuigeenheid.
NL8602377A (nl) * 1986-09-22 1988-04-18 Philips Nv Werkwijze voor het vervaardigen van een afbuigeenheid voor een kathodestraalbuis.
NL8602407A (nl) * 1986-09-24 1988-04-18 Philips Nv Elektromagnetische afbuigeenheid.
KR890006376Y1 (ko) * 1987-09-30 1989-09-21 삼성전기 주식회사 편향 요크의 코일세퍼레이터
JPH01176639A (ja) * 1987-12-29 1989-07-13 Matsushita Electron Corp 偏向ヨーク
JPH0212743A (ja) * 1988-06-30 1990-01-17 Toshiba Corp 偏向ヨーク
KR930000791B1 (ko) * 1989-11-09 1993-02-04 미쯔비시덴끼 가부시끼가이샤 편향 요크
JPH048247U (de) * 1990-04-28 1992-01-24
JPH0473842A (ja) * 1990-07-12 1992-03-09 Matsushita Electric Ind Co Ltd 偏向ヨーク
JPH0487240A (ja) * 1990-07-30 1992-03-19 Matsushita Electron Corp 偏向ヨーク
JP2946716B2 (ja) * 1990-10-05 1999-09-06 松下電器産業株式会社 偏向ヨーク
JPH0740296Y2 (ja) * 1991-03-19 1995-09-13 松下電器産業株式会社 偏向コイル
JPH04370629A (ja) * 1991-06-19 1992-12-24 Toshiba Corp 偏向ヨーク装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1233067B (de) * 1964-02-05 1967-01-26 Telefunken Patent Ablenkspuleneinheit fuer Fernsehgeraete
EP0540113A1 (de) * 1991-11-01 1993-05-05 Koninklijke Philips Electronics N.V. Bildröhrenablenkeinheit mit Vertikalablenkspulen vom Semi-Satteltyp

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0794551A1 (de) * 1996-03-08 1997-09-10 THOMSON TUBES & DISPLAYS S.A. Elektronerstrahlablenksystem für eine Kathoderstrahlröhre
US5818159A (en) * 1996-03-08 1998-10-06 Thomson Tubes And Displays, S.A. Electron beam deflection system for a cathode ray tube
SG97754A1 (en) * 1996-03-08 2003-08-20 Thomson Tubes & Displays Electron-beam deflection system for a cathode-ray tube
EP0821388A1 (de) * 1996-07-25 1998-01-28 THOMSON TUBES & DISPLAYS S.A. Einrichtung zur Befestigung einer Ablenkeinheit auf dem Hals einer Kathodenstrahlröhre
FR2751786A1 (fr) * 1996-07-25 1998-01-30 Thomson Tubes & Displays Dispositif de fixation d'un deviateur sur le col d'un tube a rayons cathodiques
US5923117A (en) * 1996-07-25 1999-07-13 Thomson Tubes And Displays, S.A. Deflection yoke securing device
FR2795231A1 (fr) * 1999-06-18 2000-12-22 Thomson Tubes & Displays Dispositif de deflexion pour tube a rayons cathodiques
WO2000079563A1 (en) * 1999-06-18 2000-12-28 Thomson Tubes & Displays S.A. Deflection device for cathode ray tube

Also Published As

Publication number Publication date
CN1123462A (zh) 1996-05-29
CZ287564B6 (en) 2000-12-13
JPH0850866A (ja) 1996-02-20
CA2153003C (en) 2005-10-18
DE69414698T2 (de) 1999-04-08
CZ168495A3 (en) 1996-02-14
TW331647B (en) 1998-05-11
SG48690A1 (en) 1998-05-18
PL177264B1 (pl) 1999-10-29
ATE173561T1 (de) 1998-12-15
EP0690471B1 (de) 1998-11-18
MY112914A (en) 2001-10-31
RU2216067C2 (ru) 2003-11-10
DE69414698D1 (de) 1998-12-24
US5589729A (en) 1996-12-31
PL309454A1 (en) 1996-01-08
CN1068707C (zh) 2001-07-18
CA2153003A1 (en) 1996-01-02
KR960005725A (ko) 1996-02-23
RU95110771A (ru) 1997-06-27

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