KR100246287B1 - Cathode ray tube - Google Patents

Abstract

The present invention relates to a method of arranging a pattern of conductors of a film-type saddle-type deflecting member for a cathode-ray tube, which optimizes the arrangement of conductors of the respective films so as to obtain a predetermined magnetic field pattern, Type saddle-type deflection member.

The arraying method includes the steps of mounting a plurality of lead wires mounted on the net-funnel portion of the cathode ray tube to form a predetermined magnetic field pattern when a current flows through the lead wire, and a pair of deflection portions, a neck end turn portion, A plurality of deflection films F1 (FN) which are stacked and formed into a predetermined shape and whose conductors of the deflection films F1 (FN) form a predetermined circuit, And a plurality of connection films (C1 (CN)) each of which forms a funnel end turn portion by connecting the pair of connection films at a pair of connection portions, characterized in that, in order to obtain maximum deflection sensitivity and convergence, the conductors are arranged to, depending on the angle θ from the horizontal axis of the cathode ray tube formula [ω (θ) = a ₁ sin θ + a ₃ + a sin3θ sin5θ ₅ + ... (Where? Is an angle from the horizontal axis to 90 degrees, and A ₁ , A ₃ , A ₅ , ... A _2n-1 are integers and n is a natural number).

Thus, there is an effect that a magnetic field pattern of the most desirable design value can be realized by easily converting a predetermined magnetic field pattern curve into a Fourier series and arranging the conductors of the respective films accordingly.

Description

A method of arranging patterns of conductors of a film type saddle type deflecting member for a cathode ray tube and a film type saddle type deflecting member

The present invention relates generally to a method of arranging a pattern of conductors of a film-type saddle-type deflecting member for a cathode-ray tube and a film-type saddle-type deflection member of a lead arrangement structure thereof, and more particularly, A plurality of films such as a flexible printed circuit (FPC) substrate on which a plurality of conductors are arranged in a predetermined pattern, or a plurality of conductors arranged in a predetermined pattern, A pair of film-shaped deflecting members which are formed by stacking a plurality of insulating layers on a substrate, and optimizing a lead arrangement of each of the films so as to obtain a best magnetic field pattern, And a horizontal deflecting member of a film-type saddle type having a wire array structure.

1 shows a panel 12 having a fluorescent screen 20 formed on the back face of a face plate 18 and an electron gun 11 having an electron gun 11 for forming electron beams 19a and 19b and discharging them to the screen 20 A color cathode ray tube 10 including a neck 14, a funnel 13 connecting the neck 14 and the panel 12, and a deflection yoke assembly 17 mounted on the neck- Respectively.

An internal conductive layer (not shown) is formed in the funnel 13 to be in contact with the cathode terminal 15. The shadow mask 16 in which a plurality of apertures or slits 16a are formed in a predetermined arrangement is detachably mounted on the panel 12 at a predetermined interval from the screen 20. [

The deflection yoke assemblies 17 each have a pair of film-like horizontal deflection members and vertical deflection members. The horizontal deflecting member forms a horizontal deflection magnetic field to horizontally deflect a movement path of the electron beams 19a and 19b when a horizontal deflection current is applied, and when the vertical deflection current is applied, And forms a vertical deflection magnetic field so as to vertically deflect the movement of the electron beams 19a and 19b.

It is preferable that electron beams 19a and 19b are scanned over the entire surface of the screen 22 by changing the deflection magnetic field in an appropriate manner to form a two-dimensional image on the cathode ray tube panel 12 with optimal deflection sensitivity. In addition, such deflection by the magnetic field forms a pincushion magnetic field by the horizontal deflecting member and forms a barrel magnetic field by the vertical deflecting member, so that the electron beams of the inline type electron gun are easily converged.

FIG. 2 is a cross-sectional view of line 2-2 of FIG. 1, showing a state in which film-type saddle-type horizontal deflection members LF and RF and toroidal-type vertical deflection members UF and LF are mounted. The saddle type horizontal deflection members LF and RF are mounted on the inner surface of the bobbin 135 via a support member 135a and the toroidal type vertical deflection members UF and LF are mounted on the inner surface of the bobbin 135 And is wound around the core 36 from the outer surface.

An example of a saddle-type horizontal deflection member 30 thus mounted is shown in FIG. 3, a saddle type horizontal deflecting member 30 of a cathode ray tube of Patent No. EP 0 1169 613 A1 (Philips Electronics Industries) is connected to a deflection film 31 and its deflection film 31, And a connecting film (35) for forming a circuit of the circuit board. The deflection film 31 is cut at a predetermined width to form a neck end turn portion 34 at a connected portion thereof. A plurality of cutout portions of the deflection film 31 form deflection portions 32 and 33, Thereby forming connection portions 32 'and 33' at which the respective conductive wires are exposed at the ends. The connecting film 35 forms a bridging member of the U-shaped deflection film 31. The connecting films 35 'and 35', in which a plurality of wires are exposed at the ends, (32 ', 33') are connected to a predetermined circuit.

FIG. 4 shows an example of a film type saddle type deflection member proposed by the present applicant. In Fig. 4, the film-type saddle-type deflection member is composed of a plurality of deflection films F1 ... FN and connection films C1 ... CN. The deflecting films F1 ... FN have a window formed at the center thereof to enable a predetermined location. A plurality of conductors for the deflecting magnetic field in each of the deflecting portions FR, FL are arranged in a predetermined pattern composition, FNL which are connected to each other at the neck end turn portion FE and are exposed to the outside so as to form connection terminals at the end portions of the respective wires are formed so that the connection portions F1R ... FNL are connected to the connection films C1, And connected to the connecting portions C1R ... CNL of the formed connecting film to form a predetermined circuit.

The film-type saddle-type deflecting member for a cathode-ray tube having such a structure is simple in comparison with the winding of the coil, and the pattern structure of the internal conductor can be variously changed with uniformity, that is, stability. While it is possible to vary the structure of the pattern in various ways, there is a problem in that a lot of tests are required to obtain an optimum pattern structure.

Thus, the present invention is directed to a film-like saddle-type deflecting member as described above, wherein the film-like saddle-type deflecting member is a film-like saddle-type deflecting member that optimizes the lead arrangement of its respective film to obtain an optimal deflection sensitivity and a predetermined magnetic field pattern for convergence And to provide a pattern arrangement method and a deflection member thereof.

FIG. 1 is a plan view of an axial partial sectional view showing a schematic structure of a color cathode ray tube. FIG.

Figure 2 is a cross-sectional view of line 2-2 of Figure 1 showing a pair of saddle type horizontal deflecting members and a toroidal type vertical deflecting member of film type 2;

FIG. 3 is a perspective view showing one form of a film-type saddle-type horizontal deflection member; FIG.

FIG. 4 is a perspective view showing another form of a horizontal sagittal type horizontal sagittal member; FIG.

FIG. 5 is a cross-sectional view perpendicular to the tube axis for illustrating the distribution of a conventional saddle-type horizontal deflection coil; FIG.

FIG. 6 is a cross-sectional view perpendicular to the tube axis to illustrate a method of arranging conductors in a film-type saddle-type horizontal deflection member in accordance with the present invention;

FIG. 7 is a graph of a Fourier series for explaining a method of arranging wires of a cathode-ray tube type saddle-type deflection member according to the present invention.

FIG. 8 is a graph for explaining a method of arranging a conductor by applying a Fourier graph of FIG. 7 to a cathode ray tube film type saddle type deflection member according to the present invention.

FIG. 9 is a graph for explaining a wire arrangement method for each cross section perpendicular to the tube axis along the tube axis; FIG.

DESCRIPTION OF THE REFERENCE NUMERALS

10: cathode ray tube 11: electron gun

12: Panel 13: Funnel

14: Neck 15: Bipolar terminal

16: shadow mask 17: deflection yoke assembly

18: face plate 19a, 19b: electron beam

20: Screen

In order to achieve the above object, a method of arranging patterns of wires of a film-type deflecting member according to an embodiment of the present invention is a method of arranging patterns of wires in a neck- A plurality of deflection films each formed of a pair of deflection portions, a neck end turn portion, and a pair of connection portions, the plurality of deflection films being stacked and formed into a predetermined shape, and the wires of the deflection film forming a predetermined circuit Shaped deflection member of a cathode ray tube, which is composed of a plurality of connection films, each of which connects the connection portions of the pair of deflection films to each other at a pair of connection portions to form a funnel end turn portion. In order to obtain the maximum deflection sensitivity and convergence the leads are arranged in the deflecting film, expression according to the angle θ from the horizontal axis of the cathode ray tube [ω (θ) = a ₁ + a ₃ sin3θ sinθ + a ₅ + ... sin5θ , Where A is an angle from the horizontal axis to 90 degrees and A ₁ , A ₃ , A ₅ , ..., A _2n-1 are integers and n is a natural number). Further, Type saddle-type deflection member for a cathode-ray tube characterized in that conductors are arranged by this method.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 5 is a sectional view perpendicular to the tube axis of the film-type saddle-type deflection coil of the cathode ray tube, showing a predetermined coil distribution diagram. The distribution of the coils may be required in various forms other than that shown to form the desired magnetic field in FIG. 5.

FIG. 6 is a cross-sectional view perpendicular to a tube axis for explaining a method of arranging patterns of conductors of a film-type saddle-type deflection member for a cathode-ray tube according to the present invention.

7 and 8, according to the method of arranging the pattern of the conductive lines of the film type saddle type deflecting member for a cathode ray tube according to the present invention, the Fourier series expression [? (? ) = A ₁ sin? + A ₃ sin ₃ ? + A ₅ sin ₅ ? + ... (Where A is an angle from the horizontal axis to 90 degrees and A ₁ , A ₃ , A ₅ , ... A _2n-1 is an integer and n is a natural number) The density is calculated by the following equation:? (?) = A ₁ cos? + A 3/3 cos ₃ ? + A 5/5 cos ₅ ? +? (Where? Is an angle from the horizontal axis to 90 degrees, and A ₁ , A ₃ , A ₅ , ... A _2n-1 are integers and n is a natural number). 7 and 8. Fig. 7 and Fig. 8 show the density of the conductor line, i.e.,? (?) = A ₁ cos? + A 3/3 cos ₃ ? + A 5/5 cos ₅ ? The first to third terms of the Fourier series are shown as curves S1, S2 and S3, and in FIG. 8, the first to third terms of the Fourier series are applied based on the curve SO according to the diameter of the tube Respectively. Here, the coefficient of the first order (A ₁ ) forms the basic lead portion for determining the bias sensitivity, and the coefficient (A ₃ ) of the second order is distributed opposite to the upper and lower directions with the angle of 30 degrees, The center of the entire magnetic field is shifted up and down according to the amount, thereby becoming a central component in determining the barrel or pincushion-type magnetic field. In addition, since the fifth order is distributed in the form of a quadrature in the rectangular coordinates, it appears as a component contributing to the convergence of the three kinds of inline type electron beams.

Therefore, it becomes possible to form the total number of conductors and their arrangement so as to obtain optimal deflection sensitivity and convergence while changing the coefficients of the respective probabilities by the above-mentioned Fourier series.

FIG. 9 is a graph for explaining the pendulum arraying method of the conductors for each cross section (Z ₁ , Z ₂ , Z ₃ ...) Perpendicular to the tube axis along the tube axis. The Fourier series A change in each cross section can be obtained.

6, the angle θ _i and θ _i-1 corresponding to the number of films of ω (θ _i ) and ω (θ _i-1 ) are obtained, and the angles θ _i and θ _i-1 And one wire is disposed on each film between the two films. At this time, one of the conductors may be arranged on an angle at the center between the angles? _I and? _I-1 , or may be constantly changed within the angular range depending on the characteristics of the respective types of the cannon.

In addition, in order to consider the influence of each film on the electron beam, it is preferable to set the ratio inversely proportional to the square of the distance from the tube axis of each film, that is, P _s = (R + s P) ² / (R + s x P) ² : R is the diameter of the tube on the cross section of the tube axis, s is a natural number between 1 and the film number, and P is the pitch . That is, the total number of conductors of each film is determined by the equation? S (?) (= Ps x? (?) = Ps x (A1 sin? + A3 sin? 3 + A5 sin? And one line is disposed between the angle? _I and the angle? _{I-1 at} which the difference between the angles? _I and? _I-1 becomes 1. When the Ps is 1 / film number, the influence of the magnetic field due to the difference in distance from the tube axis is ignored, It is also possible to equally divide the number of leads.

By such a method, it is possible to manufacture the film-type deflecting member according to the pattern structure in which the conductive lines are arranged on each cross section of the tube axis and are continuously connected to each other. Accordingly, the present invention provides a film- A member can be obtained. That is, according to the Fourier series,? Is divided at predetermined intervals, and the values? _I ,? _I-1 ) are substituted to obtain the density as shown in FIG. Further, a density distribution curve of a coil corresponding to a predetermined magnetic field pattern is obtained from the past lightness, a similar Fourier series is obtained, and the density and the number of conductors according to the angular range (? _I ,? _I-1 ) It is possible to manufacture the film-type deflecting member with an almost complete designed value reflecting the experience value.

As described above, according to the embodiment of the present invention, the magnetic field pattern of the most preferable design value can be easily obtained by converting a predetermined magnetic field pattern curve into a Fourier series and thereby arranging the conductors of each film so as to easily obtain the maximum deflection sensitivity and convergence It can be implemented.

Claims (9)

A plurality of wires embedded in the neck-funnel portion of the cathode ray tube to form a predetermined magnetic field pattern when a current flows through the wire, the pair of deflection portions, the neck end turn portion, and the pair of connection portions, A plurality of deflection films F1 (FN) forming a predetermined shape and connecting portions of the pair of deflection films so that the conductors of the deflection film F1 (FN) form a predetermined circuit, And a plurality of connection films (C1 (CN)) which are connected to each other at a connection portion to form a funnel end turn portion, wherein a conductor arranged on the deflection film for obtaining maximum deflection sensitivity and convergence , And the total number from the horizontal axis of the cathode ray tube to the position at which it is at an angle? Is calculated according to the formula [? (?) = A ₁ sin? + A ₃ sin ₃ ? + A ₅ sin? , Wherein A is an integer, and n is a natural number. The film-type saddle for a cathode ray tube according to any one of claims ₁ to ₄ , wherein the angle? Is an angle from the horizontal axis to 90 degrees and A ₁ , A ₃ , A ₅ , A method of arranging a pattern of conductors of a type biasing member. The optical pickup according to claim 1, characterized in that one conductor is disposed on each film between the angles θ _i and θ _{i-1 where the difference} between the angles ω (θ _i ) and ω (θ _i-1 ) A method of arranging patterns of conductors of a film type saddle type deflection member for a cathode ray tube. 3. The method according to claim 2, wherein one conductor is disposed on each film in the middle between the angles? _I and? _I-1 corresponding to the difference between? (? _I ) and? (? _I-1 ) Wherein the film-shaped saddle-type deflecting member for a cathode-ray tube is characterized in that a pattern of the conductor pattern is arranged. 2. The method according to claim 1, wherein the ratio (P _s = (R + s x P) ² / mo> 2) where ω (θ _i ) is inversely proportional to the square of the distance from the tube axis of each film (R + s x P) ² ) where R is the diameter of the tube on the cross section of the tube axis, s is a natural number between 1 and the film number, and P is the pitch (thickness) ) (= Ps × ω (θ ) = Ps × (a 1 sinθ + a 3 sin3θ + a 5 sin5θ + ...)) the total number of conductors of each film is determined by, and ωs (θ _i) and ωs (θ _{i -1} ) of the film-like saddle-type deflection member is ₁ , and one conductor is disposed on the film between the angles θ _i and θ _i-1 . The method according to claim 4, wherein the P _s is 1 / film number of the film-type saddle-type deflection member for a cathode-ray tube. A plurality of wires embedded in the neck-funnel portion of the cathode ray tube to form a predetermined magnetic field pattern when a current flows through the wire, the pair of deflection portions, the neck end turn portion, and the pair of connection portions, A plurality of deflection films F1 (FN) forming a predetermined shape and connecting portions of the pair of deflection films so that the conductors of the deflection film F1 (FN) form a predetermined circuit, And a plurality of connection films (C1 (CN)) which are connected to each other at a connection portion to form a funnel end turn portion, wherein a wire arranged in the deflection film to obtain maximum deflection sensitivity and convergence , And the total number from the horizontal axis of the cathode ray tube to the position at which it is at an angle? Is calculated according to the formula [? (?) = A ₁ sin? + A ₃ sin ₃ ? + A ₅ sin? , Wherein A ₁ , A ₃ , A ₅ , ..., A _2n-1 are integers, and n is a natural number), wherein the film-type saddle- . 7. The liquid crystal display according to claim 6, characterized in that one conductor is disposed on each film between angles? _I and? _I-1 corresponding to the difference between? (? _I ) and? (? _I-1 ) Film type saddle type deflection member for a cathode ray tube. 7. The method according to claim 6, wherein the ratio (P _s = (R + s x P) ² / (R + s x P) ² ): R is the diameter of the tube on the tube axis cross section per row, s is a natural number between 1 and the film number, P is the pitch (thickness) The difference between? S (? I) and? S (? I-1) is equal to or greater than 1 (= Ps × ω (θ) = Ps × (A1sinθ + A3sin3θ + A3sin5θ + And one lead is disposed on the film between the angle? I and the angle? I-1, which is the angle? I and the angle? I-1, respectively. The film type saddle type deflection member for a cathode ray tube according to claim 8, wherein P _s is 1 / film number.