CN1020990C - Deflection yoke for colour cathode ray tube - Google Patents
Deflection yoke for colour cathode ray tube Download PDFInfo
- Publication number
- CN1020990C CN1020990C CN 90106630 CN90106630A CN1020990C CN 1020990 C CN1020990 C CN 1020990C CN 90106630 CN90106630 CN 90106630 CN 90106630 A CN90106630 A CN 90106630A CN 1020990 C CN1020990 C CN 1020990C
- Authority
- CN
- China
- Prior art keywords
- coil
- magnetic field
- deflecting
- distorts
- electron gun
- 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 - Fee Related
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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
- H01J29/701—Systems for correcting deviation or convergence of a plurality of beams by means of magnetic fields at least
- H01J29/702—Convergence correction arrangements therefor
- H01J29/705—Dynamic convergence systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/56—Correction of beam optics
- H01J2229/568—Correction of beam optics using supplementary correction devices
- H01J2229/5681—Correction of beam optics using supplementary correction devices magnetic
- H01J2229/5687—Auxiliary coils
Landscapes
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
A conventional pair of magnetic members which conduct a leakage magnetic field from a vertical deflection coil, and which generate an auxiliary magnetic field for correction in a pincushion on the side of an electronic gun of the vertical deflection magnetic field are wound with auxiliary coils, and these auxiliary coils are connected to the vertical deflection coil. In addition to a conventional function of generating an auxiliary magnetic field, the auxiliary coils operate as a function of generating a magnetic field, so that a convergence distortion and spot distortion can be completely corrected without causing any damage.
Description
The present invention relates to a kind of deflecting coil, mainly be configured in the color cathode ray tube that in-line gun is housed, the horizontal deflection magnetic field that distorts into pincushion with distort into barrel-shaped vertical deflection magnetic field and promptly in this deflecting coil, produce.
Usually, be configured in horizontal deflection coil and ring type or the saddle type frame deflector coil that deflecting coil in the color cathode ray tube that in-line gun is housed comprises saddle type.Horizontal deflection coil and frame deflector coil produce the horizontal deflection magnetic field that distorts into pincushion respectively and distort into barrel-shaped vertical deflection magnetic field.Therefore deflecting coil can not got and need that is to say the structure of auto-convergence formula with the version of dynamic convergence circuit.On the other hand, this distorted magnetic field may become the reason that produces coma aberration.As shown in Figure 3, assemble in the image of distortion green raster G that produces because of the electron beam at center and the red raster R that produces because of the electron beam of both sides and the blue grating B skew that is perpendicular to one another at band.Can also see that from Fig. 4 be easy to produce rotation distortion (spot distrotion) at the image periphery by formed redness of the electron beam of both sides and blue bundle point, owing to produce this spot distrotion, the performance that make cathode ray tube have high definition is difficult.
Disclosed invention solution to the problems described above is to make the electron gun of vertical deflection magnetic field partly distort into pincushion among the Japan publication communique 62-217546.That is to say that first and second magnetic components pick the leakage flux from the ring type frame deflector coil, and two generation magnetic fields that magnetic component play a part produce auxiliary magnetic field, for the pincushion distribution of correcting electronic rifle end.
It is very effective solving coma aberration with said structure.But it is very difficult depending the auxiliary magnetic field that first and second magnetic components want the desired pincushion of satisfactory acquisition to distribute alone.In fact be distribution that need to regulate frame deflector coil coil windings own.When the distribution of the coil windings of frame deflector coil own was regulated as a part that solves coma aberration, the regulating power of coil windings distribution correct convergence just descended in addition.
The deflecting coil of color cathode ray tube of the present invention has overcome above-mentioned and many other shortcoming and defect parts of prior art, and it comprises following each several part: a horizontal deflection coil produces the horizontal deflection magnetic field that distorts into pincushion; One frame deflector coil produces and distorts into barrel-shaped vertical deflection magnetic field; One insulating frame is supporting two deflecting coils, and cylindrical in the part of electron gun side; The first and second sheet magnetic components produce the additional vertical deflecting electric field that distorts into pincushion, and partly have being connected of electricity with the electron gun of described vertical deflection magnetic field; Also has at least one pair of ancillary coil; The major part of the wherein said first and second sheet magnetic components is opposite each other by a vertical axis respectively, two components extend in parallel from the top and the lower part of described major part, and stretch to described electron gun along the outer surface of described cylindrical part, described in addition ancillary coil and is connected on the described frame deflector coil on the described first and second sheet magnetic components.
In a most preferred embodiment, each ancillary coil is on each main surface portion of the described first and second sheet magnetic components.
In another most preferred embodiment, each ancillary coil is on each component of the described first and second sheet magnetic components.
Like this, the described the present invention of this specification might provide the purpose of the deflecting coil of a kind of energy correct convergence frame distortion and luminous point frame distortion by the winding realization of presetting each ancillary coil right quantity; In other words, need not to regulate the coil windings distribution of frame deflector coil itself.Therefore, obtained the enough ability of the distribution of regulating winding winding itself with regard to frame deflector coil with the correct convergence situation.
Referring to following accompanying drawing, those skilled in the art that scholar just can further understand content of the present invention and multiple purpose and advantage:
Fig. 1 is the perspective view of deflecting coil of the present invention.
Fig. 2 is the perspective view of each major part of another example of the present invention.
Fig. 3 illustrates the schematic diagram that the figure of assembling the distortion generation is arranged in the image.
Fig. 4 shows the schematic diagram of spot distrotion.
With regard to the example shown in the accompanying drawing content of the present invention is described below.
As shown in Figure 1, the FERRITE CORE 2 of the horizontal deflection coil (not shown) of tool insulating frame 3 and a pair of saddle type is supporting the frame deflector coil 1a and the 1b of a pair of ring type.At big 3a place, edge, insulating frame 3 is covered with the circular portion on the big edge side of horizontal deflection coil, in addition, on little edge side, insulating frame 3 comprises box portion 3b, for holding the circular portion on the little edge side of horizontal deflection coil and stretching to the cylindrical part 3c of electron gun from box portion 3b.On the outer surface of box portion 3b two walls, the first and second sheet magnetic components 4 and 5 each main surface portion 4a and 5a are disposing opposite each otherly, thus make they can magnetic coupling on the electron gun part of vertical deflection magnetic field.Four component 4b, 4c, 5b and 5c bend towards tube axis from first type surface part 4a and 5a and extend in parallel from the upper and lower part of its major part, and stretch to electron gun along the outer surface of cylindrical part 3c, they are centered on by ancillary coil 6a, 6b, 7a and 7b respectively.Ancillary coil 6a, 6b, 7a and 7b are connected in serial or parallel with each other, and are connected in series with frame deflector coil 1a and 1b.
In above-mentioned example, each ancillary coil is on two pairs of components.As shown in Figure 2, ancillary coil 6 and 7 can be on first type surface part 4a and 5a, and ancillary coil 6 and 7 can be connected in series with frame deflector coil.
Self-evident, under the prerequisite that does not depart from the scope of the present invention with spirit, those skilled in the art that are not difficult above example is done various modifications.Therefore claims of the present invention are not limited to the content that this specification is narrated, and should be considered as comprising all characteristics of residing in the novelty that tool can patent among the present invention, comprise all characteristics that can be considered equivalence of the present invention that belong to that those skilled in the art that propose.
Claims (3)
1, a kind of deflecting coil comprises: a horizontal deflection coil produces the horizontal deflection magnetic field that distorts into pincushion; One frame deflector coil produces and distorts into barrel-shaped vertical deflection magnetic field; One insulating frame is supporting two deflecting coils, and cylindrical in the part of electron gun side; The first and second sheet magnetic components produce the additional vertical deflecting electric field that distorts into pincushion, with the electron gun part magnetic coupling of described vertical deflection magnetic field; The major part of the wherein said first and second sheet magnetic components is opposite each other by a vertical axis, two components extend in parallel from the top and the lower part of described major part, and stretch to described electron gun along the outer surface of described cylindrical part, it is characterized in that, also has at least one pair of ancillary coil, described ancillary coil and is connected in series on the described frame deflector coil on the described first and second sheet magnetic components.
2, deflecting coil according to claim 1 is characterized in that, described ancillary coil is on each main surface portion of the described first and second sheet magnetic components.
3, deflecting coil according to claim 1 is characterized in that, described ancillary coil is on each component of the described first and second sheet magnetic components.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP199007/89 | 1989-07-31 | ||
| JP19900789A JPH0364835A (en) | 1989-07-31 | 1989-07-31 | Deflecting yoke |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1049246A CN1049246A (en) | 1991-02-13 |
| CN1020990C true CN1020990C (en) | 1993-05-26 |
Family
ID=16400557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90106630 Expired - Fee Related CN1020990C (en) | 1989-07-31 | 1990-07-31 | Deflection yoke for colour cathode ray tube |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH0364835A (en) |
| CN (1) | CN1020990C (en) |
| GB (1) | GB2235575B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0739164Y2 (en) * | 1989-09-22 | 1995-09-06 | 株式会社村田製作所 | Deflection yoke device |
| GB2268814B (en) * | 1992-07-17 | 1995-10-11 | Bicc Plc | Composite electric and optical cable |
| KR19990048536A (en) * | 1997-12-10 | 1999-07-05 | 이형도 | Deflection yoke |
| JP2000100347A (en) * | 1998-09-24 | 2000-04-07 | Nec Kansai Ltd | Color cathode-ray tube device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1467475A (en) * | 1973-07-13 | 1977-03-16 | Videon Sa | Device for the deflection and convergence correction of electron beams |
| NL7414845A (en) * | 1974-11-14 | 1976-05-18 | Philips Nv | DEVICE FOR DISPLAYING COLOR TV IMAGES. |
| JPS5227216A (en) * | 1975-08-25 | 1977-03-01 | Sony Corp | Convergence corrector of color cathode ray tube |
| US4429293A (en) * | 1983-05-13 | 1984-01-31 | Rca Corporation | Pincushion raster corrector distortion with improved performance |
| DE3665111D1 (en) * | 1985-09-27 | 1989-09-21 | Hitachi Ltd | Convergence correcting device capable of coma correction for use in a cathode ray tube having in-line electron guns |
| US4728915A (en) * | 1986-03-18 | 1988-03-01 | Matsushita Electronics Corporation | Deflection yoke for a color cathode ray tube |
-
1989
- 1989-07-31 JP JP19900789A patent/JPH0364835A/en active Pending
-
1990
- 1990-07-31 GB GB9016729A patent/GB2235575B/en not_active Expired - Fee Related
- 1990-07-31 CN CN 90106630 patent/CN1020990C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| GB2235575A (en) | 1991-03-06 |
| GB9016729D0 (en) | 1990-09-12 |
| GB2235575B (en) | 1994-05-11 |
| JPH0364835A (en) | 1991-03-20 |
| CN1049246A (en) | 1991-02-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| C56 | Change in the name or address of the patentee |
Owner name: PANASONIC ELECTRIC EQUIPMENT INDUSTRIAL CO.,LTD. Free format text: FORMER NAME OR ADDRESS: MATSUSHITA ELECTRONICS CORP.; PANASONIC ELECTRIC EQUIPMENT INDUSTRIAL CO.,LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Patentee after: Matsushita Electric Industrial Co., Ltd. Patentee before: Matsushita Electronics Corp. Patentee before: Matsushita Electric Industrial Co., Ltd. |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |