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WO1996021237A1 - Collier de deviation de type film et sa fabrication - Google Patents

Collier de deviation de type film et sa fabrication Download PDF

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Publication number
WO1996021237A1
WO1996021237A1 PCT/KR1995/000180 KR9500180W WO9621237A1 WO 1996021237 A1 WO1996021237 A1 WO 1996021237A1 KR 9500180 W KR9500180 W KR 9500180W WO 9621237 A1 WO9621237 A1 WO 9621237A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
deflection
members
type
conductive lines
Prior art date
Application number
PCT/KR1995/000180
Other languages
English (en)
Inventor
Baek Young Choi
Soo Ryong Byun
Original Assignee
Orion Electric Co., Ltd.
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
Priority claimed from KR2019950027066U external-priority patent/KR970015269U/ko
Application filed by Orion Electric Co., Ltd. filed Critical Orion Electric Co., Ltd.
Priority to AU43170/96A priority Critical patent/AU4317096A/en
Publication of WO1996021237A1 publication Critical patent/WO1996021237A1/fr

Links

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
    • H01J29/768—Deflecting by magnetic fields only using 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
    • H01J29/70—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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/70—Electron beam control outside the vessel
    • H01J2229/703—Electron beam control outside the vessel by magnetic fields
    • H01J2229/7032—Conductor design and distribution
    • H01J2229/7035—Wires and conductors
    • H01J2229/7036—Form of conductor
    • H01J2229/7037—Form of conductor flat, e.g. foil, or ribbon type

Definitions

  • the present invention concerns the deflection yoke of a color picture tube and a method for fabricating it.
  • the deflection yoke is to deflect the electron beams emitted from the electron gun system of a color picture tube.
  • a color picture tube 10 generally comprises a panel 12 having a panel surface 18, a phosphor screen 20 formed on the back of the panel surface 18, a neck 14 containing an electron gun structure 11 for producing electron beams 19a, 19b directed towards the phosphor screen 20, a funnel 13 for connecting the neck 14 and the panel 12, and a deflection yoke 17.
  • the funnel 13 has an internal conductive layer (not shown) contacting a positive electrode 15.
  • a shadow mask 16 with a plurality of slots 16a is placed directly behind the screen 20.
  • the deflection yoke 17 includes a horizontal deflection coil structure for producing horizontal deflection magnetic field to horizontally deflect the electrom beams 19a, 19b and a vertical deflection coil structure for producing vertical deflection magnetic field to vertically deflect the electron beams 19a, 19b.
  • the deflection magnetic fields are properly varied to scan the phosphor screen 22 thus providing two dimensional images through the panel 12.
  • the horizontal deflection coil is formed in a saddle type, and the vertical deflection coil in a toroidal type.
  • a deflection yoke 17 comprises a pair of toroidal vertical deflection coils 31, 32 and a pair of saddle horizontal deflection coils 33, 34 as shown in Figs. 2 and 3.
  • the pair of saddle horizontal deflection coils 33 and 34 are oppositely arranged on the upper and the lower part of the inside wall of a bobbin 35, and the pair of vertical deflection coils 31 and 32 wound oppositely around a core structure 36, 37 in a toroidal type.
  • the vertical deflection coils may be arranged on the outer surface of the bobbin 31 in a saddle type, and in this case, the core structure 36, 37 is mounted on the vertical deflection coils.
  • the core structure consists of an upper and a lower core 36 and 37, which facilitates the winding of the coils around the core structure. Namely, after winding separately the vertical deflection coils 31 and 32 around the upper and the lower cores 36 and 37, they are assembled together.
  • the saddle horizontal deflection coils 33 and 34 the left coil part 33b, 34b and the right coil part 33a, 34a should be wound to make currents flow in opposite directions.
  • the upper and the lower saddle deflection coil 33 and 34 are arranged on both sides of a pair of projections 35a and 35b of the bobbin 35. As shown in Fig.
  • the left and the right coil part 33a and 33b of the upper saddle horizontal deflection coil 33 are designed to make the currents flow in the opposite directions, and likewise the left and the right coil part 34a and 34b in the opposite directions, so that assembling the pair of saddle horizontal deflection coils 33 and 34 causes the left coil part 33a, 34a and the right coil part 33b, 34b to flow the currents in the opposite directions.
  • the saddle horizontal deflection coil 33 has a side winding part 33a, 33b for producing the horizontal deflection magnetic field 33, a front and a rear winding part 33c and 33d forming the end turns, and a front and a rear opening portion 33f and 33e for securing proper convergence characteristics and faciliating the fabrication, as shown in Fig. 4.
  • Fig. 5 is a cross sectional view taken along line 5-5 of Fig. 4, which shows the number of the winding turns in fine angle intervals d ⁇ l, d ⁇ 2 according to the angles ⁇ l and ⁇ 2 with reference to the horizontal axis X.
  • the distribution of the coil density is very complicated together with considering the opening portions 33e, 33f, and therefore it is virtually impossible to wind the coils to rapidly vary the coil density by using a conventional winding method. Hence, the optimum convergence characteristics may not be secured.
  • FIG. 6 for illustrating a coil shaping structure for winding coils into the saddle horizontal deflection coil 33.
  • the coils are wound in a cavity 43 created between male and female arbors 41 and 42.
  • the coils are delivered in the direction indicated by arrow B in the drawing with rotating the male and female arbors.
  • the cavity 43 is made partially narrow so as to vary the coil density according to the angles ⁇ l, ⁇ 2 of the saddle horizontal deflection coil 33.
  • a pin 44 is projected in the direction indicated by arrow c just before the positions of the opening portions 33e, 33f so as to prevent the opening portions 33e, 33f from being wound.
  • the winding length becomes different according to the circular angle and the axial direction, it is difficult to obtain a given coil density only by using the coil shaping structure rotating at a given speed. Hence, the uniformity of the coil winding is not secured resulting in the degradation of the convergence. Further, the winding shape varies according to the temperature, and the slippage of the conductive lines makes the characteristics of the product non-uniform.
  • a film-type deflection member used in a color picture tube which comprises a plurality of films each containing at least an electrical conductive line patterned so as to produce magnetic field in a given pattern.
  • the electrical conductive lines are insulated with one another forming conductive layers, and the conductive layers are superimposed with an insulation layer between adjacent layers.
  • Electrical connection members are provided for connecting the conductive lines to produce the magnetic field of a given pattern.
  • the conductive lines of the film-type deflection members are formed in layers exposed at both ends in step, and the electrical connection members have a plurality of conductive lines deposited like step with an insulating layer between them, and the conductive lines of said conductive lines have respectively a pair of connection members exposed to be connected with the electrical connection parts of the film-type deflection members.
  • One of the film-type deflection members consists of a flexible printed circuit (FPC) having a patterned conductive lines insulated from one another .
  • the insulating layers between the conductive lines are formed of adhesive material, and the upper and the lower insulating materials are such as polyimid, polyester, etc.
  • a connection protective layer of insulating material is formed over the uppermost and the lowermost of the deflection members.
  • At least one of the horizontal and the vertical deflection coils comprises a plurality of film- type layers each having electrical conductive lines electrically connected with one another.
  • a supporting member is provided in the bobbin to reinforce the film-type deflection members so as to maintain a given form.
  • the supporting member is integrated with the bobbin, and the film-type deflection member is supported inserted in said supporting member.
  • the connection members are saddle type to electrically connect the film-type deflection members.
  • the connection members are formed in toroidal type electrically connecting the film-type deflection members.
  • the deflection yoke comprises a film-type deflection member having at least a film containing conductive lines arranged in a given pattern to produce magnetic field, and connection members for electrically connecting the conductive lines so as to produce magentic field.
  • the conductive lines of the film- type deflection members are formed like step exposed at both ends, the connection members are deposited like step with an insulating between them, and opposite connection parts are provided exposed in the ends of the connection members to connect with said deflection members.
  • the film- type deflection members consist of a plurality of flexible printed circuit films with a patterned conductive lines superimposed together.
  • a method for fabricating the deflection yoke of a color picture tube including a horizontal deflection coil arranged around the neck-funnel connection for horizontally deflecting the electron beams, a vertical deflection coil arranged perpendicularly to said horizontal deflection coil for vertically deflecting the elctron beams, a bobbin for mounting said deflection coils around said neck-funnel connection, and cores arranged on the perimeter of said bobbin, which comprises the steps of:
  • the film-type deflection members are preferably hardened in a given form to attach to said bobbin by means of heating and cooling in the forming step.
  • the fixing step includes the step of fixing the central part of the connectors on the peripheral surface of the cores.
  • the step of froming the film-type deflection members is to deposit a plurality of flexible films like step, and form connection parts by exposing both ends of the conductive lines of the flexible films.
  • the connection is performed by depositing said films like step with insulating layers interposed between them and exposing both ends to form opposite connection parts.
  • Fig. 1 is a partially cross sectioned view for schematically illustrating the structure of a color picture tube
  • Fig. 2 is a cross sectional view taken along line 2-2 of Fig. 1 for illustrating a pair of conventional saddle horizontal deflection coils and a pair of vertical deflection coils;
  • Fig. 3 is a cross sectional view taken along line 3-3 of Fig. 2;
  • Fig. 4 is a perspective view for illustrating the saddle horizontal deflection coils as shown in Figs. 2 and 3;
  • Fig. 5 is a cross sectional view taken along line 5-5 of Fig. 4 for illustrating the distribution of the saddle horizontal deflection coil
  • Fig. 6 is a cross sectional view for schematically illustrating the coil shaping structure for fabricating the horizontal deflections coil of the Fig. 4;
  • Fig. 7 is a plane view for schematically illustrating a film used for constituting a multi-layer film-type deflection member according to an embodiment of the present invention
  • Fig. 8 is a longitudinal cross sectional view for illustrating the electrical connections between a plurality of parts constituting a multi-layer film-type deflection member according to another embodiment of the present invention.
  • Fig. 9 is a partial enlarged cross sectional view for illustrating the structure of the conductive line layers of the multi-layer film-type deflection member shown in Fig. 8;
  • Fig. 10 is a schematic diagram for illustrating the electrical connections of the inventive multi-layer film- type deflection member
  • Fig. 11 is a schematic perspective view for illustrating the inventive film-type deflection yoke
  • Fig. 12 is a view similar to Fig. 2 for illustrating the cross sectional view of the film-type deflection yoke Of Fig. 11;
  • Fig. 13 is a cross sectional view taken along line 13-13 similar to Fig. 3;
  • Fig. 14 is a plane view for illustrating a film-type deflection yoke according to another embodiment of the present invention
  • Fig. 15 is a flow chart for illustrating the steps of fabricating a film-type deflection yoke according to the present invention
  • Fig. 16 is a partial cross sectional view for illustrating a forming structure for forming the inventive film-type deflection member into a given form
  • Fig. 17 is a plane view for illustrating the test result of spotting the electron beams on the screen of a color picture tube with the inventive film-type deflection member.
  • a flexible printed circuit (FPC) film 50 for fabricating a film-type deflection member which includes electrically conductive lines arranged in a given pattern insulated from one another.
  • a plurality of conductive layers fl,...,fn are laid as shown in Fig. 8, where there is shown the structure for externally connecting the conductive lines 51, 52 of the film 50 by means of connecting members 57, 58.
  • a pair of conductive lines 51 and 52 are symetrically arranged in the conductive line part 50c between the end external connection parts 50a and 50b with reference to the axis X-X.
  • the conductive lines may be arranged in any pattern in a plane.
  • An insulating adhesive material is filled between the pair of conductive lines 51 and 52.
  • the conductive line layers fl,...,fn each consisting of a pair of conductive lines 51 and 52 are superimposed together with insulating layers Pl,...,Pn between them, as shown in Fig. 8.
  • the insulating layers P2,...,Pn have both ends cut off to form the electrical connection parts 50a, 50b, ....
  • connection part protective layers 55 are preferably formed by an insulating adhesive material hardened on the uppermost and the lowermost of the connection parts in order to secure the electrical connection of the electrical connection parts 51a, 51b, 52a, 52b, ...
  • insulating layer PI such as polyimid, polyester, etc.
  • the plurality of conductive lines are insulated from one another by means of insulating adhesive materials Ad.
  • insulating adhesive materials Ad In this way, there are formed alternately and repeatedly a given number of insulating layers P2,...,Pn and a given number of conductive line layer F2,...,fn.
  • an upper insulating protective layer Po of polyester is laid as the uppermost coverlay.
  • a pair of film-type deflection members LF and RF are respectively composed of a plurality of films LF1, ...,LFn and RF1, ... ,RFn. Describing the electrical connections of the films, a conductive line 51 of the uppermost film LF1 of a film- ype deflection member
  • LF has at one end an electrical connection part 51b connected externally with a connection member Ao, and at the other end an electrical connection part 51a connected to an electrical connection part 62a at one end of a conductive line 62 of the uppermost film RF1 of another film-type deflection member RF by means of a connection member Al.
  • the electrical connection part 62b at the other end of the conductive line 62 is connected to the electrical connection part 52b at one end of the other conductive line 52 of the uppermost film LF1 by means of a connection member Bl.
  • connection part 52a of the other conductive line 52 is connected through a connection member Cl to an electrical connection part 61a at one end of the other conductive line 61 of the uppermost film RF1, while the other electrical connection part 61b is connected through a connection member Dl to an electrical connection part of a conductive line of the second film LF2 of the film-type deflection member LF.
  • the other electrical connection part of the conductive line is connected through a connection member A2 to a conductive line of the second film RF2 of the film-type deflection member RF.
  • connection members Al, ... ,An;Cl, ... ,Cn;Bl, ... ,Bn;Dl, ... ,Dn are used to connect the conductive lines of one of the film-type deflection members with those of the other so as to produce the magnetic field.
  • connection members Al, ... ,An,-Cl, ... ,Cn are used to connect the conductive lines of same layers so that each of the films has two of the connection members.
  • connection members Dl,...,Dn-l are to connect the conductive lines of different layers, so that the connection members Bl...Bn;Dl...Dn-1 at the right side of Fig. 10 should be separated.
  • the connection members and connection parts may have any kind of form.
  • the ends of the coils may have a connection pin.
  • connection member C may connect the film-type deflection members LF and RF along the direction indicated by arrow T to obtain a toroidal type connection, or along the direction indicated by arrow S to obtain a saddle type connection. It is preferable to attach the connection member C on the outer surface of the cores 36 and 37.
  • the inventive film-type deflection yoke 117 has no end turn.
  • Supporting members 135a and 135b may be integrally formed with or detachably attached to the bobbin 135 as shown in Fig. 12 so as to make the film- type deflection members LF and RF maintain a given form. If the film-type deflection members LF and RF are hardened to maintain a given form, it is possible to directly attach them to the bobbin 135.
  • a pair of film-type deflection member FL and FR which are connected in the same way as the conventional saddle horizontal deflection coils.
  • the regions FL and FR separated by the lines are provided with conductive lines arranged in a given pattern.
  • an inventive method for fabricating the film-type deflection members using a flexible printed circuit film comprises the following steps:
  • step SI a module is designed to form a conductive line pattern of each of the film layers constituting the film-type deflection members according to the convergence characteristics, etc.
  • step S2 a mask film is prepared to conform with the conductive line structure of the film layers.
  • step S3 the films for the deflection members are obtained according to the process for fabricating a conventional printed circuit film. The films are laid together to produce the film-type deflection member F.
  • an insulating layer Pi made of a material such as polyimid, polyester, etc.
  • a cleaned conductive metal thin film on which a photoresist is deposited to etch the metal film to produce a conductive pattern arranged on conductive layers fl,...,fn.
  • an insulating adhesive layer Ad is laid over it.
  • an insulating layer P2 of polyimid, polyester, etc. is also laid over it.
  • the upper protective layer Po is preferably made with a greater thickness and strength than the other insulating layer P2.
  • the film-type deflection member F made according to the process of Fig. 15 is formed by using a forming structure 60 as shown in Fig. 16 in step S5. Otherwise, the insulating layers Pi, ... ,Pn and the metal film are formed according to the pattern of the portion of the bobbin 135 for attaching the deflection members, and etched. As shown in Fig. 16, the film-type deflection member F is put on a forming punch 62 as shown by two- dotted chain line in the drawing, and the corresponding forming die 61 is pressed towards the forming punch to shape the film-type deflection member F. Then, the heating lines heat the deflection member, and harden it by cooling to maintain the shape.
  • a current is applied to the film-type deflection member F to heat.
  • the connecting member C is connected to the hardened deflection member F in step S6, fixed to the bobbin 135 in step S7.
  • the convergence characterisics of the inventive film-type deflection yoke are compared with the conventional yoke in three spots SPl, and SP2, SP3 on the screen as shown in Fig. 17.
  • a color picture tube of 14", 0.28p is used with eliminating the ferrite sheet. The result of the test is as follows:
  • the standard deviation of the inventive yoke is closer to zero than the conventional yoke, the convergence characteristics of the inventive yoke are considerably improved compared to the conventional yoke. Moreover, the end turns are not necessary, thus improving the color purity.

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  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)

Abstract

L'invention se rapporte à des éléments de déflexion de type film (LF et RF) d'un tube de reproduction en couleurs qui comprend une pluralité de films, chacun contenant au moins un conducteur électrique configuré de façon à générer un champ magnétique dans un motif donné. Les conducteurs électriques sont isolés les uns des autres, formant des couches conductrices, ces dernières étant placées au-dessus d'une couche isolante qui s'intercale entre les couches conductrices adjacentes. Le motif de lignes conductrices est obtenu par l'attaque chimique des couches de cuivre. Les éléments de déflexion durcis 3(LF et RF) sont fixés sur une bobine (135). Cette bobine sert d'élément-support et est montée au niveau du col du tube. Des noyaux magnétiques (36 et 37) sont disposés sur le périmètre de la bobine (135).
PCT/KR1995/000180 1994-12-29 1995-12-28 Collier de deviation de type film et sa fabrication WO1996021237A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU43170/96A AU4317096A (en) 1994-12-29 1995-12-28 Film-type deflection yoke and its production

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
KR19940037492 1994-12-29
KR1994/37492U 1994-12-29
KR1995/27066U 1995-09-29
KR2019950027066U KR970015269U (ko) 1995-09-29 1995-09-29 필림형 편향코일이 구비된 편향요크
KR1995/54902 1995-12-22
KR1019950054902A KR960026047A (ko) 1994-12-29 1995-12-22 필름형 편향부재와, 이를 이용한 음극선관용 필름형 편향장치 및 그 제조방법

Publications (1)

Publication Number Publication Date
WO1996021237A1 true WO1996021237A1 (fr) 1996-07-11

Family

ID=27349136

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR1995/000180 WO1996021237A1 (fr) 1994-12-29 1995-12-28 Collier de deviation de type film et sa fabrication

Country Status (4)

Country Link
KR (1) KR960026047A (fr)
AR (1) AR001335A1 (fr)
AU (1) AU4317096A (fr)
WO (1) WO1996021237A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980021450A (ko) * 1996-09-17 1998-06-25 엄길용 음극선관의 필름형 편향장치

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3754322A (en) * 1970-05-14 1973-08-28 Marconi Co Ltd Methods of making printed circuit coil
JPS5761249A (en) * 1980-09-30 1982-04-13 Toshiba Corp Deflection coil
EP0169613A1 (fr) * 1984-07-27 1986-01-29 Philips Electronics Uk Limited Bobines en forme de selle pour unités de déviation électromagnétiques
US4789806A (en) * 1986-04-02 1988-12-06 U.S. Philips Corp. Cathode ray tube deflection unit comprising means for compensating for misalignment of the line and field deflection coil systems
US5117151A (en) * 1989-06-23 1992-05-26 U.S. Philips Corporation Color display tube with twist correction means

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3754322A (en) * 1970-05-14 1973-08-28 Marconi Co Ltd Methods of making printed circuit coil
JPS5761249A (en) * 1980-09-30 1982-04-13 Toshiba Corp Deflection coil
EP0169613A1 (fr) * 1984-07-27 1986-01-29 Philips Electronics Uk Limited Bobines en forme de selle pour unités de déviation électromagnétiques
US4789806A (en) * 1986-04-02 1988-12-06 U.S. Philips Corp. Cathode ray tube deflection unit comprising means for compensating for misalignment of the line and field deflection coil systems
US5117151A (en) * 1989-06-23 1992-05-26 U.S. Philips Corporation Color display tube with twist correction means

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Vol. 6, No. 136; & JP,A,57 061 249, (TOKYO SHIBAURA), 1982. *

Also Published As

Publication number Publication date
AU4317096A (en) 1996-07-24
KR960026047A (ko) 1996-07-20
AR001335A1 (es) 1997-10-22

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