KR930008793B1 - High voltage bobbin for fbt - Google Patents

Abstract

The method comprises a high voltage coil skin layer forming stage for printing and depositing conductive strips on an insulation bobin forming stage for winding the resin film of a length on the high voltage bobin, a high voltage output stage for attatching rectifier diodes between bobins having windings of conductive strips to give high voltage.

Description

High pressure coil winding method of high pressure bobbin for FBT

1 is a schematic structural diagram showing a method of winding a high pressure coil on a conventional high pressure bobbin for FBT.

2 is a view showing a state in which a conductive band is formed on an insulating thin film resin wound on a high-pressure bobbin of the present invention.

3a, b, c is a view showing a state in which an insulating thin film resin having a conductive band is coated on a high-pressure bobbin according to the present invention.

4 is a structural diagram showing a state in which a rectifying diode is attached to each high-voltage bobbin.

5 is a main configuration diagram of the present invention.

* Explanation of symbols for main parts of the drawings

1 Insulation thin film resin 2 Conductive band

3: high pressure coil 4: high pressure bobbin

5: ferrite core 6: rectifier diode

The present invention is a high-pressure generating device for supplying a high voltage to the CRT of the TV and monitor set, in the FBT, a high-pressure coil in which several conductive bands are printed or deposited on the insulating thin film resin on the cylindrical high-pressure bobbin body portion The present invention relates to a high-pressure coil winding method of a high-pressure bobbin for FBT to be connected to a terminal.

In general, the FBT used for the CRT of a TV or monitor generates a high pressure by boosting a pulse voltage generated from the low pressure bobbin side to a high pressure bobbin wound with a high pressure coil (secondary coil), and generates an anode (Andoe) of a cathode ray tube (CRT). The high voltage is supplied to the display to display the screen.

The secondary coil used to boost the pulse voltage of 1000Vpp generated by the primary coil of low voltage bobbin 20-30 times should be wound up by winding the coil about 20-30 times of the primary coil onto the bobbin. As a result, the voltage is boosted while the current through the secondary coil is reduced to less than 1 / 20-1 / 30. In other words, the current flowing through the secondary coil is relatively low while the voltage is about 20KV-30KV, and the secondary side current of the high voltage bobbin of the FBT is less than several mA, and in order to generate this level of high voltage and high current, Coils with a diameter of a degree are required. Therefore, most of them are formed by winding a high pressure coil of about 10 to 50 μm on a high pressure bobbin.

Meanwhile, in the related art, coils having a wire diameter of about tens of microns should be wound thousands of times on high-pressure bobbins, and windings of these coils should also be wound in alignment. Disconnection occurs frequently, of course, there is a large problem that the high pressure leaks due to the short circuit between the coils due to the failure of the alignment winding.

That is, in the conventional method of winding the coil on the high pressure bobbin, as shown in FIG. 1, the high pressure coil 13 is wound on the high pressure bobbin 12 using the winding machine 11. In this case, the high-pressure coil 13 having a smaller diameter is frequently disconnected due to the tension of the winding machine 11, and the cumbersome inconvenience of having to wind it again on the high-pressure bobbin 12 is, of course, shown in FIG. As described above, the high-pressure coil 13 wound on the high-pressure bobbin 12 is not actually aligned, and the windings are staggered with each other. Thus, there is a big disadvantage that high-pressure leakage occurs due to short between the coils. In addition, the conventional winding method as described above has a problem such that a lot of defects are generated, manufacturing cost increases, product reliability is lowered.

The present invention is to improve the above-mentioned technical disadvantages and problems as described above, the object of which is to form a high-pressure coil in which several conductive bands are printed or deposited on the insulating thin film resin on a cylindrical high-pressure bobbin, No overlapping or disconnection of the high pressure coil wound on the bobbin does not occur, which prevents high pressure leakage and prevents damage to the coating of the coil. It is to provide a high voltage coil winding method of a high pressure bobbin for FBT.

As a technical means for achieving the above object, the present invention, the high-voltage coil coating step of forming a conductive band by printing or depositing a conductive material on the insulating thin film resin, and the conductive band layer is a constant length of the insulating thin film resin A high pressure bobbin forming step for cutting and winding the cylindrical high pressure bobbin; It is characterized in that it consists of a high voltage drawing step of drawing a rectified DC high voltage by attaching a rectifying diode between each bobbin on which the conductive band on the insulating thin film resin is wound.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a view showing a state where a conductive band is formed on an insulating thin film resin deposited on a high-pressure bobbin, and Al or Ag on a thin and long insulating thin film resin 1 made of PET (Polyster) or PP (Poly Proplene). The conductive material 2 is printed or deposited to coat the conductive band 2 as fine as the required number of stacked voltage divisions to form the high pressure coil 3.

On the other hand, as a method for forming the conductive band 2 on the insulating thin film 1 as described above, the conductive band 2 may be formed by ionization bonding in addition to the above method.

At this time, when the required high voltage is 20 kV when the conductive bands 2, which are the number of stacked voltage divisions required on the thin film sensor 1, are coated at 10 kV, the voltage per minute per diode is 20 kV ÷ 10 pcs. = 20 kV. Therefore, in order to withstand the high voltage corresponding to 2kV, a constant insulation distance (S) between the conductive bands is maintained in detail 1mm / kV. For this purpose, vacuum injection with epoxy insulating resin is performed to maintain insulation. Since the required number of turns is 100 turns / kV and 2 kV, the number of turns is 200 turns. The thickness of the thin film insulating resin 1 is 10 μ, and the thickness of the conductive band is 10 μ, that is, 200 turns x (10 μ +). 10μ) = 400μ, so the thickness is 4mm. In case of dividing it into 4, conductive band is divided into 4, 20kV ÷ 4 = 5kV / pcs → 5kV × 1mm / kV = 5mm, and the distance of insulation is 100Turn / k / V × 5kV = 500 turns It becomes (Turn), and the thickness becomes 500 turns x 20 micrometers = 10 mm thickness, and draws high pressure based on such a principle.

On the other hand, as described above, the conductive band 2 cuts the insulating thin film 1 to a predetermined length and is wound on each cylindrical high-pressure bobbin 4 as shown in FIG. After the work is completed, as shown in FIGS. 4 and 5, the rectifying diode 6 is connected between the respective high voltage bobbins 4 through the ferrite core 5, thereby providing an excellent high voltage rectifying effect. It can be represented.

According to the high-pressure coil winding method of the high-pressure bobbin for FBT of the present invention as described above, by winding a high-pressure coil in which a plurality of conductive bands are printed or deposited on the insulating thin film on the cylindrical high-pressure bobbin, winding on the high-pressure bobbin It is possible to prevent high voltage leakage due to overlapping or disconnection of high pressure coils, and to prevent phenomenon such as film damage of the coil, as well as to winding even minute coils easily and easily. And there is an excellent effect that can form the reliability of the product.

Claims (2)

A method of winding a high pressure coil on a high pressure bobbin, the method comprising: a high pressure coil coating step of forming a conductive band by printing and depositing a conductive material on an insulating thin film resin; A high pressure bobbin forming step of cutting the insulating thin film having the conductive band coated to a predetermined length and winding the insulating thin film resin to a cylindrical high pressure bobbin; A high voltage coil winding method for a high voltage bobbin for an FBT, comprising a high voltage drawing step of drawing a high voltage by attaching a rectifying diode between respective bobbins on which conductive bands on an insulating thin film resin are wound. The high pressure coil winding method of a high pressure bobbin for an FBT, characterized in that the conductive band layered on the insulating thin film resin is layered by an ionization bond.