EP1204132A1 - Tube image couleur - Google Patents

Tube image couleur Download PDF

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Publication number
EP1204132A1
EP1204132A1 EP00123859A EP00123859A EP1204132A1 EP 1204132 A1 EP1204132 A1 EP 1204132A1 EP 00123859 A EP00123859 A EP 00123859A EP 00123859 A EP00123859 A EP 00123859A EP 1204132 A1 EP1204132 A1 EP 1204132A1
Authority
EP
European Patent Office
Prior art keywords
field
deflection
color picture
picture tube
ferrite
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.)
Withdrawn
Application number
EP00123859A
Other languages
German (de)
English (en)
Inventor
Siegfreid Metzger
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.)
PSI Esslingen GmbH
Original Assignee
Matsushita Electronics Europe GmbH
Matsushita Display Devices Germany GmbH
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 Matsushita Electronics Europe GmbH, Matsushita Display Devices Germany GmbH filed Critical Matsushita Electronics Europe GmbH
Priority to EP00123859A priority Critical patent/EP1204132A1/fr
Publication of EP1204132A1 publication Critical patent/EP1204132A1/fr
Withdrawn legal-status Critical Current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
    • H01J29/701—Systems for correcting deviation or convergence of a plurality of beams by means of magnetic fields at least

Definitions

  • the invention relates generally to a color picture tube and is particularly concerned with the correction of aberrations with the help of magnetically conductive elements, which in the Area of a deflection unit can be attached.
  • a deflection unit essentially consists of two pairs of coils and one Ferrite core.
  • a first pair of coils creates a magnetic field that holds the electron beams deflects in the horizontal direction (X direction), while the further pair of coils deflects one vertical deflection (Y direction).
  • the ferrite core encloses the coils and serves to return the magnetic flux.
  • Electron beam generating systems are arranged within color picture tubes, A commonly used design of modern color picture tubes is an in-line arrangement which has beam generating systems. In such systems, three Electron beams generated, the axes of which are arranged side by side in a plane are and converge on the screen. Basically, it is through such Color picture tubes self-converging image generated by suitable deflection units and has essentially no north-south raster distortions (Y direction).
  • correction magnets and field-shaping elements are also used, which on the Deflection system are attached to correct imaging errors.
  • the field-forming elements are generally magnetic conductive ferrite strips, which can be of any shape.
  • Such ferrite strips are attached to the deflection system in the area of the coils to influence the deflection field.
  • To correct aberrations often have to several field-forming elements can be attached to a deflection unit.
  • the Attachment of a plurality of field-forming elements to correct Imaging errors must be made with high precision, since their effect on the Field course depends on their positioning on the deflection unit. Such Correcting imaging errors is therefore particularly complex in production.
  • the invention has for its object to provide a color picture tube, the is easier and therefore cheaper to manufacture. Another job of Invention is the provision of the associated color television sets and Color monitors.
  • the number of field-forming elements on the deflection unit to attach a color picture tube significantly reduced, by Use of field-forming elements that have at least one recess.
  • the recess is designed so that at least two through webs surface sections held together are formed.
  • Field-shaping elements can have the effect of several conventional field-shaping elements Elements can be replaced without recess. This will increase the number of Fastening steps for producing a color picture tube reduced, so that Color picture tube can be manufactured more cheaply.
  • the field-forming elements according to the invention have at least two separate sections for influencing the field profile.
  • the distance between the additional subfields caused by the sections is due to the Shaping firm.
  • the color picture tubes according to the invention always have a defined distance between them partial deflection fields and are therefore with less scatter and More uniform quality of distraction can be produced.
  • the field-forming element has a Rectangular shape.
  • the recess in the field-forming element is preferably circular and thus particularly easy to manufacture.
  • the recess is centered in the field-forming element arranged.
  • Fig. 1 shows a partial view of a deflection unit 1 for mounting on a Color picture tube, in which the windings of a coil are indicated in area 2.
  • area 2 In this area there are a first ferrite point 3 and a as field-forming elements second ferrite point 4 attached.
  • first ferrite point 3 Preferably, for the correction of Imaging errors ferrite points or ferrite strips on the deflection system glued.
  • the deflection field of the deflection unit 1 is influenced by them in each case Correct aberrations and good convergence, coma and geometry values to achieve.
  • an additional ferrite strip can be sufficient Generally, however, multiple ferrite elements will be required. For example another ferrite strip elsewhere to improve convergence become necessary.
  • this ferrite strip 5 has a recess 6 which is approximately the distance between the conventionally used ferrite points 3, 4 corresponds.
  • the through the recess 6 formed two sections in the magnetically conductive material correspond the conventional ferrite points or strips.
  • the inventive one Ferrite strips 5 have a plurality of recesses 6, which are also irregular can be arranged within the ferrite strip. The then corresponds to Distribution of the portions of the strip 5 formed by the cutouts 6 Position and size of conventional ferrite points or strips 3, 4. To be able to adapt the outer shape of the deflection unit 1 is the ferrite strip 5 flexible.
  • the invention is preferred for particularly flat color picture tubes for the correction of Imaging errors used.

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  • Video Image Reproduction Devices For Color Tv Systems (AREA)
EP00123859A 2000-11-02 2000-11-02 Tube image couleur Withdrawn EP1204132A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP00123859A EP1204132A1 (fr) 2000-11-02 2000-11-02 Tube image couleur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00123859A EP1204132A1 (fr) 2000-11-02 2000-11-02 Tube image couleur

Publications (1)

Publication Number Publication Date
EP1204132A1 true EP1204132A1 (fr) 2002-05-08

Family

ID=8170272

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00123859A Withdrawn EP1204132A1 (fr) 2000-11-02 2000-11-02 Tube image couleur

Country Status (1)

Country Link
EP (1) EP1204132A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1274743B (de) * 1962-03-31 1968-08-08 Nordmende Anordnung zum Beseitigen von Verzeichnungen in einem von einer Katodenstrahlroehre wiedergegebenen Bild
FR2170277A1 (fr) * 1972-02-03 1973-09-14 Sony Corp
EP0180947A2 (fr) * 1984-11-08 1986-05-14 Sony Corporation Bobine de déviation de faisceau d'électrons
EP0418126A1 (fr) * 1989-09-12 1991-03-20 Thomson Tubes Electroniques Déviateur de faisceau électronique avec champ magnétique de correction et blindage magnétique auxiliaire incorporé
US5023509A (en) * 1989-10-27 1991-06-11 Rca Licensing Corp. Color CRT-yoke combination having conforming corrective magnetic field means attached to the CRT
JPH09213240A (ja) * 1996-02-06 1997-08-15 Sony Corp カラー受像管用偏向装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1274743B (de) * 1962-03-31 1968-08-08 Nordmende Anordnung zum Beseitigen von Verzeichnungen in einem von einer Katodenstrahlroehre wiedergegebenen Bild
FR2170277A1 (fr) * 1972-02-03 1973-09-14 Sony Corp
EP0180947A2 (fr) * 1984-11-08 1986-05-14 Sony Corporation Bobine de déviation de faisceau d'électrons
EP0418126A1 (fr) * 1989-09-12 1991-03-20 Thomson Tubes Electroniques Déviateur de faisceau électronique avec champ magnétique de correction et blindage magnétique auxiliaire incorporé
US5023509A (en) * 1989-10-27 1991-06-11 Rca Licensing Corp. Color CRT-yoke combination having conforming corrective magnetic field means attached to the CRT
JPH09213240A (ja) * 1996-02-06 1997-08-15 Sony Corp カラー受像管用偏向装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 12 25 December 1997 (1997-12-25) *

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