EP1139380A1 - Dispositif déflecteur à utiliser dans un tube cathodique couleur - Google Patents
Dispositif déflecteur à utiliser dans un tube cathodique couleur Download PDFInfo
- 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- Withdrawn
Links
- 238000012937 correction Methods 0.000 claims abstract description 26
- 238000010894 electron beam technology Methods 0.000 abstract description 8
- 230000000007 visual effect Effects 0.000 abstract 1
- 206010010071 Coma Diseases 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 206010073261 Ovarian theca cell tumour Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 208000001644 thecoma Diseases 0.000 description 1
Images
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.
Landscapes
- Video Image Reproduction Devices For Color Tv Systems (AREA)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20060091895A (ko) * | 2005-02-16 | 2006-08-22 | 삼성에스디아이 주식회사 | 음극선관용 편향요크 |
Citations (6)
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 |
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 |
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 |
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)
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 |
EP0797837B1 (fr) * | 1995-08-29 | 2002-01-16 | Koninklijke Philips Electronics N.V. | Ecran couleur comprenant des moyens pour corriger les impacts |
-
2000
- 2000-03-29 EP EP00106713A patent/EP1139380A1/fr not_active Withdrawn
-
2001
- 2001-03-26 CZ CZ20011107A patent/CZ20011107A3/cs unknown
- 2001-03-29 US US09/821,746 patent/US6580208B2/en not_active Expired - Fee Related
Patent Citations (6)
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 |
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 |
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 |
Also Published As
Publication number | Publication date |
---|---|
US6580208B2 (en) | 2003-06-17 |
CZ20011107A3 (cs) | 2001-11-14 |
US20010040427A1 (en) | 2001-11-15 |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: MATSUSHITA DISPLAY DEVICES (GERMANY) GMBH |
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Effective date: 20020320 |
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Effective date: 20050314 |