EP0690471B1 - Elektronenstrahl-Ablenksystem für Kathodenstrahlröhren - Google Patents

Elektronenstrahl-Ablenksystem für Kathodenstrahlröhren Download PDF

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Publication number
EP0690471B1
EP0690471B1 EP94401503A EP94401503A EP0690471B1 EP 0690471 B1 EP0690471 B1 EP 0690471B1 EP 94401503 A EP94401503 A EP 94401503A EP 94401503 A EP94401503 A EP 94401503A EP 0690471 B1 EP0690471 B1 EP 0690471B1
Authority
EP
European Patent Office
Prior art keywords
separator
coils
deflection
deflection yoke
yoke according
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
EP94401503A
Other languages
English (en)
French (fr)
Other versions
EP0690471A1 (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 DE69414698T priority Critical patent/DE69414698T2/de
Priority to AT94401503T priority patent/ATE173561T1/de
Priority to EP94401503A priority patent/EP0690471B1/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 CN95106890A priority patent/CN1068707C/zh
Priority to PL95309454A priority patent/PL177264B1/pl
Priority to MYPI95001812A priority patent/MY112914A/en
Priority to RU95110771/09A priority patent/RU2216067C2/ru
Priority to SG1995000780A priority patent/SG48690A1/en
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 beam deflection system electronics for cathode ray tube, and more particularly device ensuring both the support of the deflection coils and the mechanical rigidity of the system.
  • Such a deflection system also called a deflector, is generally consisting of a pair of vertical deflection coils, a pair of horizontal deflection coils and a substantially shaped ring frustoconical in magnetic material intended to concentrate the flux created by the coils.
  • the two pairs of deflection coils are insulated electrically by a separator, generally made of plastic, which further improves the mechanical rigidity of the device deflection, fix the coils relative to each other and adjust the assembly on the neck of the tube.
  • the separator consists of a body main, in one or more parts, substantially funnel-shaped, and a flexible rear part matching the neck of the tube and intended to fix the position of the deflection system along the longitudinal axis of the tube; this fixing is generally carried out thanks to a clamping collar arranged above the flexible rear part.
  • the rear part of the vertical deflection coils is immobilized so that the position of the ferromagnetic ring is precisely adjusted so that the fields created by the deflection coils have the desired conformation to ensure the convergence of the beams electronic on the entire screen surface of the tube. Once this adjustment has been made, the ring is then immobilized definitively.
  • the shapes of the deflection coils of the deflector installed on the neck of a tube with cathode rays determine the shapes of the field lines and by that even the way the electron beams from the cannon are going to be deviated.
  • the internal surface of the pair of vertical deflection coils rests on the outer wall of the separator and the outer surface of the pair of deflection coils horizontal rests on the internal wall of the separator; so 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 not distort these.
  • the thickness of the separator defined by the distance between its internal wall and its external wall, could be variable; manufactured by injection of material plastic in a mold, the separator was then a complex part to manufacture, due to the complexity of the internal wall surfaces and external, and consuming a lot of material because having parts thick, depending on the relative shapes of the two pairs of coils.
  • Patent JP2012743 to have on the surface outer of the edge separator to facilitate air circulation between the separator and the deflection coils, these edges being arranged in planes perpendicular to the main axis of revolution of the separator.
  • this provision makes it difficult to manufacture the piece and its release.
  • the thickness of the separator could be constant; in this case the manufacture separator was simplified, but this feature should be integrated in the design of the deflection coils where it constitutes a constraint which does not allow the forms of said to be optimized coils and thereby the fields created by these coils.
  • the invention intends to propose a separator whose internal and external walls are simple in design and allow the forms to be separated from the internal surface of the vertical deflection coils and shapes of the outer surface of the horizontal deflection coils.
  • the diverter incorporating the invention comprises a pair of coils of vertical deflection, a pair of horizontal deflection coils, a rigid separator isolating one or the other the pairs of deflection coils and a ring of ferromagnetic material of substantially shaped frustoconical arranged above at least part of the coils of deflection of at least one of the walls of the separator having edges of support on which one of the two pairs of coils is supported, characterized in that said edges extend from the front towards the rear of the separator and are arranged at the intersection of the separator wall with planes radial.
  • FIG. 1 represents a deflection system 1 comprising a pair of saddle shaped horizontal deflection coils 3, a pair of coil vertical deflection 4, also saddle-shaped, isolated from the previous one by a separator 2; a ferromagnetic material ring 5 is arranged around the coils 3 and 4.
  • the assembly is arranged on the neck 8 of the tube to cathode rays 6 in order to deflect the electronic rays coming from the cannon 7 so that they explore the entire screen surface 9 of the tube.
  • the different components of system 1 can be kept in one position optimum adjustment by gluing and / or clipping, the separator 2 ensuring that both the support of the different elements and the mechanical rigidity of the assembly.
  • the distance between the two pairs of coils is guaranteed by the thickness of the separator.
  • any change in the shape of a pair of coils, to adapt it to new characteristics requires modify the internal and / or external face of the separator and change the manufacturing mold.
  • the separator 2 has a front part A, used to maintain the front of the deflection coils horizontal 3 and the positioning of the diverter on the tube thanks to adjustable feet whose housings 30 are shown in the figure.
  • the separator then has a flared intermediate portion 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 sides of the separator are designed to rotate and the distance between the two faces is constant in order to have a shape to make simple.
  • 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, shaped saddle, are made independent of each other by making that the pair of horizontal deflection coils is not based on the internal face 11 but on elongated support edges arranged on this face 11.
  • These support edges are arranged along the intersection of planes radials containing the axis Z with the face 11; this layout is chosen by because of the simplicity of making the manufacturing molds and because that it facilitates the placement of spoils necessary for demolding pieces.
  • the radial arrangement also has the advantage of better tracking the forms deflection coils whose structure is defined radially, in bundles of wires arranged at precise angles.
  • these support edges can be arranged in planes parallel to a main axes, as long as the surface of the teeth in contact with the coils constitute 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 edges of support 20, 20 '; it is indeed in this area that the coils of horizontal deflection can most deviate from deflection coil vertical. Certain support edges, such as edges 22, may however be located in the rear part in the form of a cylindrical ring separator, to support the rear bun of the deflection coil horizontal; other edges may extend from front to back like the support edges 21, 21 ', 21 ".
  • the support edges are arranged on the face 11 following the same planes of symmetry.
  • Support edges can be made in the same step of molding as the separator and therefore in the same plastic material as this last; alternatively they can be arranged on the face 11 after molding the body of the separator and adhering to it for example by collage; in this case the material constituting the support edges can 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 tube screen diagonal manufactured by Thomson Tubes & Displays can thus, in certain places of the flared part B, reach a maximum height of 2mm, while the thickness of the separator itself is around 1mm.
  • Another advantage of this invention is the ease with which a modification of the horizontal deflection coils can be implemented work: it suffices to modify the height of the support edges without changing anything on faces 10 and 11.
  • the example of the application of the invention to a diverter whose coils horizontal and vertical deviations are saddle shaped is not limiting; the invention can also be implemented without difficulty in saddle / toroidal deflectors, that is to say comprising horizontal deflection saddle-shaped coils and coils vertical deflection arranged around the material ring ferromagnetic 5.

Landscapes

  • Details Of Television Scanning (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Clamps And Clips (AREA)

Claims (13)

  1. Ablenkeinheit für eine Kathodenstrahlröhre mit einem Spulenpaar (4) für die Vertikalablenkung, einem Spulenpaar (3) für die Horizontalablenkung, einem starren Trennteil (2), das die Ablenkspulenpaare voneinander trennt, und einem im wesentlichen kegelstumpfförmigen Ring (5) aus ferromagnetischem Material, der wenigstens auf einem Teil der Ablenkspulen angeordnet ist, wobei wenigstens eine der Flächen (10, 11) des Trennteils (2) Stützrippen (20, 20', 21, 21', 21", 22) trägt, auf denen sich wenigstens ein Teil der Fläche jeder der der Fläche des Trennteils gegenüber angeordneten Ablenkspulen abstützt,
    dadurch gekennzeichnet, daß die Stützrippen (20, 20', 21, 21', 21", 22) sich vom vorderen Ende zum hinteren Ende des Trennteils erstrecken und an der Schnittlinie der Seitenwand des Trennteils mit Radialebenen angeordnet sind.
  2. Ablenkeinheit nach Anspruch 1, dadurch gekennzeichnet, daß die Stützrippen (20, 20', 21, 21', 21", 22) auf der inneren Seitenwand (11) des Trennteils liegen.
  3. Ablenkeinheit nach dem vorangehenden Anspruch, dadurch gekennzeichnet, daß die Versorgungsfrequenz der Spulen (3) für die Horizontalablenkung wenigstens gleich 16 kHz beträgt.
  4. Ablenkeinheit nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Stützrippen (20, 20', 21, 21', 21", 22) sich nicht mit gleichmäßiger Höhe erstrecken.
  5. Ablenkeinheit nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Stützrippen (20, 20', 21, 21', 21", 22) im wesentlichen auf dem sich konisch erweiternden Teil des Trennteils liegen.
  6. Ablenkeinheit nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Stützrippen (20, 20', 21, 21', 21", 22) auf der Seitenwand des Trennteils symmetrisch zu der Horizontalebene (XZ) angeordnet sind.
  7. Ablenkeinheit nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Stützrippen (20, 20', 21, 21', 21", 22) auf der Seitenwand des Trennteils symmetrisch zu der Vertikalebene (YZ) angeordnet sind.
  8. Ablenkeinheit nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Spulen für die Horizontalablenkung (3) und die Vertikalablenkung (4) in Sattelform ausgebildet sind.
  9. Ablenkeinheit nach einem der Ansprüche 1-7, dadurch gekennzeichnet, daß die Spulen (4) für die Vertikalablenkung vom Toroidtyp sind.
  10. Ablenkeinheit nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die innere Seitenwand (11) und die äußere Seitenwand (10) des Trennteils (2) einen Körper mit gleichmäßiger Dicke bilden.
  11. Ablenkeinheit nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Oberfläche der inneren Seitenwand (11) und/oder der äußeren Seitenwand (10) durch Drehung gebildet ist.
  12. Ablenkeinheit nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß das Material der Stützrippen (20, 20', 21, 21', 21", 22) unterschiedlich ist von dem Material des Trennteils.
  13. Kathodenstrahlröhre, deren Ablenkeinheit nach einem der vorangehenden Ansprüche ausgebildet ist.
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
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
EP94401503A EP0690471B1 (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
CN95106890A CN1068707C (zh) 1994-07-01 1995-06-30 带支撑脊状件的偏转系统衬垫
PL95309454A PL177264B1 (pl) 1994-07-01 1995-06-30 Zespół cewek odchylających do lampy elektronopromieniowej
MYPI95001812A MY112914A (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
SG1995000780A SG48690A1 (en) 1994-07-01 1995-06-30 A deflection yoke liner with support ridges
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 EP0690471A1 (de) 1996-01-03
EP0690471B1 true 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)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69615334T2 (de) * 1996-03-08 2002-05-16 Thomson Tubes & Displays Elektronerstrahlablenksystem für eine Kathoderstrahlröhre
EP0794551B1 (de) * 1996-03-08 2001-09-19 THOMSON TUBES & DISPLAYS S.A. Elektronerstrahlablenksystem für eine Kathoderstrahlröhre
FR2751786B1 (fr) * 1996-07-25 1998-10-16 Thomson Tubes & Displays Dispositif de fixation d'un deviateur sur le col d'un tube a rayons cathodiques
FR2795231B1 (fr) * 1999-06-18 2001-08-17 Thomson Tubes & Displays Dispositif de deflexion pour tube a rayons cathodiques
EP1147542A1 (de) * 1999-11-04 2001-10-24 Koninklijke Philips Electronics N.V. Ablenkeinheit für eine kathodenstrahlröhre und verfahren zur herstellung einer sattelförmigen ablenkspule
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

Family Cites Families (19)

* 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
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
KR100260802B1 (ko) * 1991-11-01 2000-07-01 요트.게.아. 롤페즈 편향 장치를 구비한 디스플레이 진공관

Also Published As

Publication number Publication date
CN1123462A (zh) 1996-05-29
CZ287564B6 (en) 2000-12-13
SG48690A1 (en) 1998-05-18
CA2153003C (en) 2005-10-18
TW331647B (en) 1998-05-11
JPH0850866A (ja) 1996-02-20
RU95110771A (ru) 1997-06-27
RU2216067C2 (ru) 2003-11-10
DE69414698D1 (de) 1998-12-24
PL309454A1 (en) 1996-01-08
MY112914A (en) 2001-10-31
CA2153003A1 (en) 1996-01-02
KR960005725A (ko) 1996-02-23
EP0690471A1 (de) 1996-01-03
DE69414698T2 (de) 1999-04-08
US5589729A (en) 1996-12-31
CN1068707C (zh) 2001-07-18
PL177264B1 (pl) 1999-10-29
CZ168495A3 (en) 1996-02-14
ATE173561T1 (de) 1998-12-15

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