EP1139380A1 - Dispositif déflecteur à utiliser dans un tube cathodique couleur - Google Patents

Dispositif déflecteur à utiliser dans un tube cathodique couleur Download PDF

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Publication number
EP1139380A1
EP1139380A1 EP00106713A EP00106713A EP1139380A1 EP 1139380 A1 EP1139380 A1 EP 1139380A1 EP 00106713 A EP00106713 A EP 00106713A EP 00106713 A EP00106713 A EP 00106713A EP 1139380 A1 EP1139380 A1 EP 1139380A1
Authority
EP
European Patent Office
Prior art keywords
deflection unit
deflection
unit according
errors
correction
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Withdrawn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
EP00106713A
Other languages
German (de)
English (en)
Inventor
Friedrich-Karl Dipl.-Ing. Nelle
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
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 filed Critical Matsushita Electronics Europe GmbH
Priority to EP00106713A priority Critical patent/EP1139380A1/fr
Priority to EP00124838A priority patent/EP1139379A3/fr
Priority to CZ20011107A priority patent/CZ20011107A3/cs
Priority to US09/821,746 priority patent/US6580208B2/en
Publication of EP1139380A1 publication Critical patent/EP1139380A1/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Withdrawn legal-status Critical Current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
    • H01J29/72—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 generally to a deflection unit for mounting on a color image tube and is particularly concerned with the correction of convergence errors and geometry errors in such a deflection unit.
  • Deflection units are mounted on an electron beam tube around the electron beams distract from the screen in the X and Y directions.
  • the deflection unit is there essentially consisting of two pairs of coils and a ferrite core, which is used for the return of the magnetic flux.
  • One pair of coils creates a magnetic field that the Deflects electron beams in the horizontal direction (X direction) while the other Coil pair of vertical deflection (Y direction) is used.
  • a frequently used design of modern color picture tubes is the in-line arrangement on, in which the beam generation systems are arranged side by side in one plane are. In such systems, three electron beams are generated, the axes of which are coplanar run and converge on the screen. That through for this kind of Color picture tubes suitable deflection generated image is self-converging, coma-free and has essentially no north-south rest distortions. This will be in the essentially achieved by changing the field shape in the Z direction.
  • the Z direction is the axis running towards the screen.
  • Figures 1a and 1b illustrate the deflection fields for the vertical and horizontal Deflection direction in a deflection unit for in-line color picture tubes. As can be seen in the figures the field distributions are in the rear areas 10, 40 of the deflection unit of those of the middle section 20 and the front section 30, 50 of the deflection unit different.
  • FIG. 1c The field shapes that can be used in such deflection units are shown in FIG 1c, the left field distributions in pillow form and the right in barrel form are.
  • the upper field distributions in FIG. 1c are those for the vertical deflection direction used while the lower field representations are used for horizontal deflection be applied.
  • the vertical deflection direction is in the rear area the deflection unit a pillow-shaped, in the middle a barrel-shaped and a pillow-shaped deflection field is used in the front area.
  • the deflection unit has the deflection direction in the rear area, as shown in FIG. 1b a barrel-shaped and in the front area a pillow-shaped deflection field.
  • Convergence error are available when the color separation images are no longer congruent are.
  • geometry errors when the raster image is distorted on the screen. Convergence and geometry errors can also occur simultaneously.
  • FIG. 2 An example of the presence of convergence errors is shown in Figure 2, where due of construction tolerances of the blue beam no longer with the red beam to cover can be brought. To correct such a convergence error is used in conventional Arrangements the deflection unit usually tilted, as shown in the figures 3a and 3b are shown for the X and Y directions, respectively.
  • FIG. 4a shows an ideal grid
  • FIG. 4b shows a distorted grid, caused by tilting the deflection unit in the Y direction.
  • This pair of coils allows suitable circuitry measures a correction of the convergence error.
  • the additional pair of coils Convergence correction without significant geo-gear influence is possible, however the circuitry measures required for this are very complex.
  • the invention is therefore based on the object of a simplified deflection unit Specify mounting on a color image cathode ray tube, which improved convergence and geometry error correction. Another object of the invention is the provision of associated color image cathode ray tubes and display devices.
  • a deflection unit for mounting on a color image tube a vertical deflection coil pair and a horizontal deflection coil pair, wherein at least one of the coil pairs is divided into at least two parts is. One part is used to correct convergence errors and the other part to correct of geometry errors. The respective corrections are independent of the other Correction can be carried out.
  • This arrangement according to the invention has the advantage that it is a convergence correction allows without generating a significant geometry error.
  • deflection units are also included high sensitivity especially with regard to a correction of the coma error realizable.
  • the two parts are mechanically independent and spatially separated from one another, the one provided for correcting the geometry errors Part is closer to the screen level than that for correcting the convergence errors intended part.
  • FIG. 5 shows a color image tube with an attached deflection unit in FIG Sectional view.
  • the one attached to the neck of the color picture tube 100 includes Deflection unit first a horizontal coil 110, a vertical coil 120, 130 and one Ferrite core 140.
  • the vertical coil is in a front Coil part 120 and a rear coil part 130 divided.
  • the front A geometry error can be corrected and adjusted in coil part 120.
  • the rear coil part 130 enables independent correction of convergence errors, such as one Coma error.
  • Figure 6a shows one in the Y direction displaced vertical coil 130, whereby the convergence errors shown in Figure 6b have it corrected without generating geometry errors.
  • Figure 7a Arrangement, the rear vertical coil part 130 is displaced in the X direction, which enables the correction of another convergence error, which is illustrated in FIG. 7b is.
  • the vertical coil pair is subdivided in the embodiment described, can in another embodiment of the invention, the pair of horizontal coils can be divided. In a further preferred embodiment of the invention, both pairs of coils divided, which results in different correction behavior.
  • the respective coil pair is not only in divided into two parts. Rather, it can be divided into three or more parts preferably a further improved error correction and convergence or geometry adjustment achieve.
  • the invention can preferably be used in saddle-saddle deflection units, but also in saddle-toroid deflection units apply.
  • the invention is preferably found in "pure flat" color picture tubes Application.

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  • Video Image Reproduction Devices For Color Tv Systems (AREA)
EP00106713A 2000-03-29 2000-03-29 Dispositif déflecteur à utiliser dans un tube cathodique couleur Withdrawn EP1139380A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP00106713A EP1139380A1 (fr) 2000-03-29 2000-03-29 Dispositif déflecteur à utiliser dans un tube cathodique couleur
EP00124838A EP1139379A3 (fr) 2000-03-29 2000-11-14 Tube image couleur à abérration réduite
CZ20011107A CZ20011107A3 (cs) 2000-03-29 2001-03-26 Vychylovací jednotka barevné orazovky
US09/821,746 US6580208B2 (en) 2000-03-29 2001-03-29 Deflection unit for color cathode ray tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00106713A EP1139380A1 (fr) 2000-03-29 2000-03-29 Dispositif déflecteur à utiliser dans un tube cathodique couleur

Publications (1)

Publication Number Publication Date
EP1139380A1 true EP1139380A1 (fr) 2001-10-04

Family

ID=8168277

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00106713A Withdrawn EP1139380A1 (fr) 2000-03-29 2000-03-29 Dispositif déflecteur à utiliser dans un tube cathodique couleur

Country Status (3)

Country Link
US (1) US6580208B2 (fr)
EP (1) EP1139380A1 (fr)
CZ (1) CZ20011107A3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060091895A (ko) * 2005-02-16 2006-08-22 삼성에스디아이 주식회사 음극선관용 편향요크

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0178976A1 (fr) * 1984-09-21 1986-04-23 Videocolor Déviateur magnétique à correction de géométrie destiné à un tube trichrome à trois canons en ligne
EP0540113A1 (fr) * 1991-11-01 1993-05-05 Koninklijke Philips Electronics N.V. Unité de déviation de tube image munie de bobines de déviation d'image du type à semi-selle
FR2757680A1 (fr) * 1996-12-20 1998-06-26 Thomson Tubes & Displays Unite de deviation pour tube a rayons cathodiques en couleurs comportant des bobines de deviation en forme de selle
FR2757681A1 (fr) * 1996-12-20 1998-06-26 Thomson Tubes & Displays Systeme de deviation pour tube a rayons cathodiques adapte au controle de la geometrie nord/sud de l'image
FR2757678A1 (fr) * 1996-12-20 1998-06-26 Thomson Tubes & Displays Unite de deviation pour tube a rayons cathodiques autoconvergents comportant des bobines de deviation en forme de selle
US5847503A (en) * 1994-09-24 1998-12-08 Thomson Tubes & Displays S.A. Electron beam deflection device for cathode ray tubes which is self convergent and geometry corrected

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6909887A (fr) * 1969-06-27 1970-12-29
NL8600833A (nl) * 1986-04-02 1987-11-02 Philips Nv Kathodestraalbuis.
NL8602803A (nl) * 1986-11-06 1988-06-01 Philips Nv Beeldweergeefinrichting.
NL8700835A (nl) * 1987-04-09 1988-11-01 Philips Nv Weergeefinrichting met beeldbuis-afbuigeenheid combinatie.
FR2618253B1 (fr) * 1987-07-17 1990-11-09 Videocolor Deviateur magnetique pour tube trichrome avec blindage et procede de reglage.
DE69020478T2 (de) * 1989-10-02 1996-02-22 Philips Electronics Nv Farbbildröhrensystem mit reduziertem Fleckwachstum.
US5355050A (en) * 1991-06-05 1994-10-11 U.S. Philips Corporation Color display tube with coma correction
DE69618564T2 (de) * 1995-08-29 2002-09-05 Koninkl Philips Electronics Nv Farbanzeigevorrichtung mit anordnung zur korrektur von landungsfehlern

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0178976A1 (fr) * 1984-09-21 1986-04-23 Videocolor Déviateur magnétique à correction de géométrie destiné à un tube trichrome à trois canons en ligne
EP0540113A1 (fr) * 1991-11-01 1993-05-05 Koninklijke Philips Electronics N.V. Unité de déviation de tube image munie de bobines de déviation d'image du type à semi-selle
US5847503A (en) * 1994-09-24 1998-12-08 Thomson Tubes & Displays S.A. Electron beam deflection device for cathode ray tubes which is self convergent and geometry corrected
FR2757680A1 (fr) * 1996-12-20 1998-06-26 Thomson Tubes & Displays Unite de deviation pour tube a rayons cathodiques en couleurs comportant des bobines de deviation en forme de selle
FR2757681A1 (fr) * 1996-12-20 1998-06-26 Thomson Tubes & Displays Systeme de deviation pour tube a rayons cathodiques adapte au controle de la geometrie nord/sud de l'image
FR2757678A1 (fr) * 1996-12-20 1998-06-26 Thomson Tubes & Displays Unite de deviation pour tube a rayons cathodiques autoconvergents comportant des bobines de deviation en forme de selle

Also Published As

Publication number Publication date
US20010040427A1 (en) 2001-11-15
CZ20011107A3 (cs) 2001-11-14
US6580208B2 (en) 2003-06-17

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