KR20020047357A - Ceramic board for improved insulation of fbt focus unit - Google Patents

Abstract

PURPOSE: A ceramic board of FBT(fly back transformer) focus unit is provided to break a short generation due to an arc leakage generated between neighboring conductor patterns by maintaining an insulation between neighboring conductor patterns on a ceramic board through an isolation film. CONSTITUTION: A focus and a screen conductor patterns(140,150) are printed on a ceramic board(130) which is settled inside a focus cover. An isolation film insertion hole(160) is formed between the neighboring conductor patterns(140,150). An isolation film(170) is protruded inward the focus cover and is inserted into the isolation film insertion hole(160) of the ceramic board(130). A plurality of insulation hole(180) are punched around the conductor patterns(140,150) for an insulation from the neighboring conductor patterns(140,150).

Description

CERAMIC BOARD FOR IMPROVED INSULATION OF FBT FOCUS UNIT}

The present invention is a flyback transformer (hereinafter referred to as "FBT"), which is a high voltage generator for supplying high voltage to a CRT of a TV and a monitor, and focuses on a ceramic substrate of a focus unit installed on one side of the FBT. This invention relates to a ceramic substrate of an FBT focus unit with improved insulation, which prevents product defects due to arc leakage by securing insulation between screen conductor patterns. In particular, a conductive pattern is printed on the ceramic substrate of the focus unit. Forming a separator insertion hole between adjacent conductor patterns and protruding the separator into an inner portion of the focus cover to which the ceramic substrate is coupled, and is inserted into the separator insertion hole of the ceramic substrate so as to protrude. Cuts by insulating many insulation holes through the conductor pattern For example, an insulating film is protruded between the focus and screen conductor patterns printed on the ceramic substrate of the FBT focus unit to secure insulation between the conductor patterns of the ceramic substrate, and a short due to arc leakage generated between the conductor patterns. The present invention relates to a ceramic substrate of an FBT focus unit with improved insulation, which effectively prevents occurrence of a product and prevents product defects, thereby improving product reliability.

In general, the FBT focus unit includes a ceramic substrate on which a focus and a screen conductor pattern are printed on the inside of the cover of the focus unit, and the conductor pattern contacts the grounding terminal of the slider to which the operating knob is extended. By rotating along the focus and screen conductor patterns, the focus voltage and the screen voltage are drawn out to the outside through the drawing terminal.

In the configuration of a conventional FBT focus unit ceramic substrate related to such a technique, as shown in FIG. 1, a ceramic substrate 30 is installed inside the focus cover 20 of the FBT focus unit 10, and the ceramic substrate is installed. On the upper side of the 30, the focus and screen conductor patterns 40 and 50 are printed.

In the conventional focus unit ceramic substrate having the above-described configuration, as shown in FIG. 2, the focus and screen conductor patterns 40 and 50 are formed on the ceramic substrate 30 by printing, respectively. A voltage is applied to the input terminal P of the conductor pattern to draw the focus voltage and the screen voltage, respectively.

However, the focus cover 20 on which the ceramic substrate 30 is mounted is drawn out of a high voltage focus and screen voltage through the slider spoken with the operating knob without charging the insulating resin to prevent breakage of the ceramic substrate. As shown in the arrow of FIG. 2, in the portion where the distance between the conductor patterns 40 and 50 is close, the leakage of arc occurs when the voltage is drawn, which affects the adjacent conductors, resulting in a short circuit. There is a breakage caused by this, according to which there are many problems such as frequent failure of the focus unit (10).

SUMMARY OF THE INVENTION The present invention has been made to improve the above-described problems, and an object thereof is to provide a separator between the focus and screen conductor patterns printed on the ceramic substrate of the FBT focus unit, so that an insulating film is provided between the conductor patterns of the ceramic substrate. Insulation property is secured, and short circuit caused by arc leakage generated between adjacent conductor patterns can be effectively prevented to prevent product defects in advance. The present invention provides an ceramic substrate of an FBT focus unit that can easily insulate the conductor patterns of the ceramic substrate by the insulating holes, thereby improving the reliability of the product.

1 is an exploded perspective view of a ceramic cover and a focus cover of a conventional FBT focus unit.

2 is a main structural diagram showing a bonding state of a conventional focus unit ceramic substrate.

3 is an exploded perspective view of a ceramic cover and a focus cover in which an isolation layer and an insulation hole of an FBT focus unit according to the present invention are installed;

4 is a main structural diagram showing a bonding state of the focus unit ceramic substrate of the present invention.

Explanation of symbols on the main parts of the drawings

110 ... Focus unit 120 ... Focus cover

130 ... ceramic substrate

140,150 ... Focus and screen conductor pattern

160.Separation insert hole 170 ... Separation

180.Insulation hole

As a technical means for achieving the above object, the present invention, a ceramic substrate is installed inside the focus cover of the FBT focus unit, the FBT consisting of a configuration in which the focus and screen conductor patterns are printed on the upper side of the ceramic substrate, respectively. In the focus unit of

A ceramic substrate on which the focus and screen conductor patterns are printed on an inner side of the focus cover;

Separator insertion holes formed between adjacent conductor patterns printed on the ceramic substrate;

An insulating film protruding to the inner side of the focus cover to which the ceramic substrate is coupled and inserted into and fixed to the insulating film insertion hole of the ceramic substrate;

By providing a ceramic substrate of the FBT focus unit, characterized in that it comprises a plurality of insulating holes formed in the periphery of the conductor pattern of the ceramic substrate.

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

3 is an exploded perspective view of a ceramic cover and a focus cover in which an isolation layer and an insulation hole of an FBT focus unit are installed, and FIG. 3 is a main structural diagram illustrating a coupling state of a focus unit ceramic substrate according to the present invention. The ceramic substrate 130 is installed inside the focus cover 120 of the 110, and the focus and screen conductor patterns 140 and 150 are printed on the ceramic substrate 130, respectively.

In addition, a separator insertion hole 160 is formed between adjacent conductor patterns 140 and 150 printed on the ceramic substrate 130, and the inner side of the focus cover 120 to which the ceramic substrate 140 is coupled. As a result, the isolation layers 170 protrude from each other, and are inserted into the separator insertion holes 160 formed between the conductor patterns 140 and 150 of the ceramic substrate 130 to be fixed.

In addition, a plurality of insulating holes 180 for insulating the adjacent conductor patterns are formed at the periphery of the conductor patterns 140 and 150 of the ceramic substrate 130.

Referring to the operation and effect of the present invention made of such a configuration as follows.

As shown in FIGS. 3 and 4, the ceramic substrate 130 provided inside the focus cover 120 of the FBT focus unit 110 has a conductor for varying the focus and screen voltages on the upper side thereof, and for drawing them out, respectively. After the patterns 140 and 150 are printed, the conductor patterns 140 and 150 are connected to a connection terminal of a slider (not shown) to be communicated with the operation knob to perform a voltage varying operation. To the outside through the focus and the screen cable spoken to the terminal.

On the other hand, the ceramic substrate 130 has a separator insertion hole 160 for insulation of the arc leaked between the adjacent conductor patterns 140 and 150 printed on the ceramic substrate 130, the ceramic substrate 140 ) Are protrudingly installed to the inner side of the focus cover 120 to which the () is coupled, so as to closely contact the separator insertion holes 160 formed between the conductor patterns 140 and 150 of the ceramic substrate 130. Insert to protrude.

At this time, the isolation film 170 protruding into the focus cover 120 is formed of an insulator, and is formed to be integrally formed with the focus cover 120.

Accordingly, when a voltage is applied to the conductor pattern of the ceramic substrate 130, a leakage current resulting from the discharge of arc generated between the adjacent conductor patterns 140 and 150 is inserted into the separator insertion hole 160. As the isolation layer 170 to be inserted is blocked, the short generation occurring between the adjacent conductor patterns 140 and 150 is prevented.

In addition, a plurality of insulating holes 180 are formed on the ceramic substrate 130 at the periphery of the conductor patterns 140 and 150 of the ceramic substrate 130 to insulate the adjacent conductor patterns. It is possible to further improve the insulation between the printed conductor patterns, thereby preventing breakdown.

As described above, according to the ceramic substrate of the FBT focus unit of the present invention, an insulating film is protruded between the focus and screen conductor patterns printed on the ceramic substrate of the FBT focus unit to secure insulation between the conductor patterns of the ceramic substrate, By effectively blocking short generation due to arc leakage generated between the adjacent conductor patterns, it is possible to prevent product defects in advance, and by changing the conductor pattern and forming a plurality of ceramics by insulated holes around the ceramic Insulation between the conductor patterns of the substrate is easily performed, and accordingly, there is an excellent effect of improving the reliability of the product.

While the invention has been shown and described with respect to specific embodiments thereof, it will be appreciated that various changes and modifications can be made in the art without departing from the spirit or scope of the invention as set forth in the following claims. Those of ordinary skill will want to know easily.

Claims (2)

The ceramic substrate 130 is installed inside the focus cover 120 of the FBT focus unit 110, and the focus and screen conductor patterns 140 and 150 are printed on the ceramic substrate 130, respectively. In the FBT focus unit, A ceramic substrate 130 having the focus and screen conductor patterns 140 and 150 printed thereon and mounted on the inner side of the focus cover 120; An isolation layer insertion hole 160 recessed between adjacent conductor patterns 140 and 150 printed on the ceramic substrate 130, An insulating film 170 protruding to the inner side of the focus cover 120 to which the ceramic substrate 130 is coupled to be inserted into and fixed to the insulating film insertion hole 160 of the ceramic substrate 130, and The ceramic substrate of the FBT focus unit comprises a plurality of insulating holes 180 formed at the periphery of the conductor patterns 140 and 150 of the ceramic substrate 130 to insulate the adjacent conductor patterns. . The ceramic substrate of the FBT focus unit according to claim 1, wherein the isolation film (170) protruding into the focus cover (120) is made of an insulator.