TW416069B - FBT, its bleeder resistor, and device for coupling bleeder resistor - Google Patents

Abstract

An FBT (fly-back transformer), its bleeder resistor (installed on the top of the FBT), and a device for coupling the bleeder resistor are disclosed. The bleeder resistor 100 is accommodated within a resistor case 180, and the resistor case 180 is installed on the top of an FBT case 110. A resistor pattern 140 is printed on the substrate 130 of the bleeder resistor 100. Openings 150 are formed within the wavy portions of the resistor pattern 140, and the resistor case 180 has a plurality of isolating sheets 160 within its interior 170, so that the isolating sheets 160 can be inserted into the openings 150. When manufacturing the bleeder resistor, the glass coating, the baking, the epoxy resin dipping are eliminated, but the voltage breakdown resisting property is improved. Further, the manufacturing cost is lower owing to the simplification of the process.

Description

116069 V. Description of the invention (i) < Scope of invention > The present invention relates to an FBT (ie, flyback transformer), a bleeder resistor (installed on top of the FBT), and a coupling resistor ^ Device, fbt is used in the cathode ray tube to generate high voltage and used in TV 'monitor or other similar products. In particular, the present invention relates to a kind of "J" its "eight-degree bleeder resistor, and a device for coupling a bleeder resistor, in which there are two or more knife openings formed in the resistance of the adjacent substrate Where the second and second openings alternately face each other. In addition, the sum of the lengths of the first and second doorways is greater than the average distance between the first and second openings. '因 ^: Manufacture not painted It is not necessary to coat glass resistors to bleed resistors, immerse them in epoxy resin, and cure them. Not only that, their pressure resistance properties are strengthened, and the manufacturing process is simplified. Therefore, it can reduce The drain resistor can be manufactured in a simple method at a low cost. ≪ Background of the invention > Generally, a conventional drain resistor is manufactured in the following manner. That is, as shown in FIG. 1, first prepare a resistor having a purity of about 96%. The ceramic substrate 10 made of 81203. Its thickness is about 0.5 ~ 1.2mm, and its area is 400 ~ 150 0ππα ^ PbAg, PtAg, Ag or the like is printed on the ceramic substrate 10. Composition of paste. The printed substrate is then heated at approximately 80 ° C. For printing, a printed circuit board (JPCB) is formed, and then the wires are soldered. Then Ru02 is printed, and the structure is baked at about 850 ° C. Because a resistor with a certain thickness is completed. But 'In this resistor, a current can only pass if the resistance per unit length of the resistor is less than the air contact resistance.

Page 5 416069___ 5. Description of the invention (2) When the edge breaking voltage is 0KV / mm, if 20KV voltage is supplied across the resistor 12, it must maintain a distance of 20KV + 0.5KV / mm = 40mm . In addition, if thermal degradation and environmental factors are taken into consideration, the safety distance must be 1, 8 times the above distance, that is, 40mm X 1.8 = 72mm. However, when the resistor 12 is printed on the ceramic substrate in a linear shape, the ceramic substrate must be longer, as a result, the entire ceramic substrate volume becomes too large. Therefore, the resistor 12 on the ceramic substrate 10 must be made curved to reduce the volume of the ceramic substrate 10. 5KV / mm。 In this case, the potential difference per unit length on the bending pattern exceeds the linear resistance to the breakdown voltage distance 0.5 KV / mm. If environmental factors and thermal degradation are taken into consideration, the electric potential per unit length (the potential difference ^ exceeds the distance of the anti-destructive voltage in the air, as a result, a glow discharge may occur between the curved patterns. Therefore, a curved resistor $ resistor is formed in a conventional manner. The pattern is coated with glass and insulated, and then hermetically baked to avoid the first discharge of the image. F is that although the glass coating can insulate the pattern, the crystalline epoxy tree is wet during curing ... Gas and thermal shock will weaken the insulation, and the resistor. It is dipped in epoxy resin after the glass is coated. The second purpose of the knife: the knife's world power, but the drain resistor manufactured by the above method is accompanied by the next method. Glass-less coating S ': The resistor 12 is printed on the ceramic substrate 1◦, and then coated with glass: After that, it is baked and then coated with epoxy resin 15 and then coated with Gao Cheng: this Due to such a complicated manufacturing process, the performance is reduced. Second, the resistor 12 is printed on the ceramic substrate 10, and then glass

416069 V. Description of the invention (3) ~ --- Glass coating is used to insulate the resistor pattern, and then baking is performed, and the anoxic resin 15 ′ is then cured. Therefore, the printed resistance, device, and loop are reduced by ’and increase the variation rate of resistance error. Third, due to continuous baking, the particles of the resistor continue to be heavy and easily become messy. As the surface of the resistor becomes rough and sharp, the voltage destruction resistance decreases rapidly. Fourth, as described in the above description, the error rate of the resistance value is relatively high. Therefore, in order to meet customer needs, incomplete products are dumped. The final decision must be raised. Fifth_fifth 'because of the use of glass and soft epoxy resin, the material is high, and the final price is even higher. Figures 2A to 2E illustrate various examples of conventional bleed resistors. The entire area of the ceramic substrate 10 on which the resistor is printed is immersed in a molten resin to coat the substrate. Fig. 2A illustrates a resistor having three 5 lines and a drain line connected by soldering. Therefore, this resistor has the following disadvantages. Figure 2B illustrates a bleed resistor in which the resistor pattern is formed at a high density and the ceramic substrate is coated on only one side. Gate Figure 2C illustrates another conventional bleeder resistor in which the Taurman substrate 0, a portion of which has one side, is coated with silicon. Fig. 2D illustrates that the focal point capacity substrate in the drain resistor is integrally formed. The resistor 12 is coated with epoxy resin, and an opening is formed in a part of the substrate. Fig. 2E illustrates an example in which the focus capacity substrate is integrated (not a bleeder resistor), and the linear distance between the openings (for the insulation of the figure) is smaller than the width (W) of the ceramic substrate. In the traditional technology of shanghai ’, because of glass coating and soft epoxy resin,

Page 7 ^ 16069---Inventions " -----. The coldest month has two drawbacks. In addition, even if an opening is provided, when the voltage is at a level, a glow discharge also occurs between the patterns. Especially low: the situation as described above 'the complicated process results in a reduction in operability and productivity < General of invention > Therefore, the purpose of the present invention is to provide an FBT and its discharge resistor, in which all heart palate can be coated, baked, impregnated with epoxy resin, and its curing process can be avoided, but it has improved the anti-voltage breaking properties Because of the simplification of the manufacturing process, α0 can be easily manufactured. Another object of the present invention is to provide a bleeder resistor and a coupling device thereof, wherein an opening is formed between the wave-shaped curved resistance patterns to avoid ^ pressure glow discharge, and the bleeder resistor is inserted into the casing. Improve the electrical characteristics of the bleeder resistor with a perfect insulation pattern. In order to achieve the purpose of disclosure, the bleeder resistor of the present invention includes a substrate and a wave-shaped bending resistor pattern formed on the substrate. The FBT shunt resistor further includes: one or more pairs of openings are formed on the substrate, and each pair of openings includes a first opening and a second opening; the first opening is provided on the edge of the substrate; and the second opening is provided on the opposite side of the substrate. The first and second openings extend laterally on the substrate; and the sum of the lengths of the first and second openings is greater than the average width of the substrate between the first and second openings. For another purpose of the present invention, the FBT bleed resistor coupling device of the present invention includes: a bleed resistor; and a resistor housing for accommodating a bleed resistor having openings arranged alternately and facing each other ; Formed in resistor

Page 8 416069 5. Description of the invention (5) The separator in the housing is used to be inserted into the opening of the eight π & β, β0 bucket + eight-year drain resistor, and protrudes above the drain resistor; and A cover is provided for the drain resistor to be inserted behind its housing to cover the top of the resistor housing. The leakage resistor includes a resistor pattern. In another aspect of the present invention, the FBT of the present invention includes: high-voltage and low-voltage coil shafts, on which coils are wound for high wear;-FBT housings for receiving high voltages And a low-voltage coil shaft are filled with an insulating resin; a shunt resistor substrate has one or more pairs of first-and-first: cores, and the first opening is provided on one edge of the substrate, and the second opening is provided on The opposite edge of the substrate, and the total length of the first and second openings is longer than the flat pattern of the substrate between the first and second openings. The pattern is undulated between the first and second openings. Φ See no electricity 丨 Storage points A bleeder resistor having a plurality of openings for the housing and protruding from the bleeder resistor: η 1 < Brief description> 8 ° The above disclosure and other advantages of the present invention can be better understood by referring to the detailed description of the specific embodiments of the invention. The figure reads the first figure. This is the general manufacturing process of a traditional FBT bleed resistor. : 2 gardens. The 2A-2Ε picture is used to release the traditional FBT The illustration of resistance ''; various examples of resistance 15. Figure 3 is an exploded perspective view of the FBT, drain resistor and cover of the present invention. Figure 4 is a perspective view of the drain resistor of the present invention. Figure 5 is another view of the present invention. Perspective of a bleeder resistor in an embodiment

Page 9 41 ^ 0 ^ 9_ V. Description of the Invention (6) Figure; and Figure 6 is a perspective view of the cover of the resistor case. Comparison of component names and symbols in the illustration 10: Ceramic substrate 12: Resistor 15: Epoxy resin 14: Lead 110 FBT case 100 Drain resistor 130 Substrate 140 Resistor pattern 180 Resistor case 210 Cover 150 The first opening 150 ': the second opening 160, the separator 170, the resistor housing 1 8 0, the internal 200 slot 190, the surrounding wall 120, the resistor pattern 1 4 0, the input terminal 120': the output terminal of the resistor pattern 140 < Detailed description of the preferred embodiment > FIG. 3 is an exploded perspective view of the FBT, the drain resistor and the cover of the present invention. Figure 4 is a perspective view of a bleeder resistor of the present invention.

416069 V. Description of the invention (7) Inside the FBT of the present invention, there are high voltage and low voltage coil shafts with coils. A high voltage and low voltage coil shaft is housed in an FBT housing 110, and an insulating resin is included to insulate the high voltage and low voltage coil shafts. A resistor case 180 is mounted on top of the FBT case 110. The resistor case 180 houses a bleeder resistor 100, which includes a substrate 130 and a resistor pattern 140 formed on the substrate 130. The resistor body 180 is covered with a cover 210. As shown in Figures 4 and 5, the method of forming the drain resistor 100 is to print a resistor pattern 140 on the substrate 130, and the first and second openings 150 and 150 'Alternatively facing each other are formed in the wavy portion of the resistor pattern 14o. That is, one or more pairs of the first and second openings 150 and 150 'are formed on the substrate 130 adjacent to each other. The first opening 150 is opened on one edge of the substrate 130. The second openings 150 'are opened at opposite edges of the substrate 130, and the first and first openings 150 and 150 are formed laterally in the substrate 130. The sum (h × L2) of the lengths of the first and second openings 150 and 15 0 'is made larger than the average substrate width Ws between the first and second openings. As shown in FIG. 3, 'a resistor case 180 is installed on the top of the FBT case 110, and the resistor case 180 has a plurality of separators 160 inside the 170, so that the separator 160 can be inserted into the opening 150 and 150 '. As shown in FIG. 6, a cover 210 is connected to the resistor case 180 and has a plurality of insertion grooves 20 0 so that the cover 210 can be coupled to the resistor case 180. The insertion groove 2 0 0 is formed by a surrounding wall 19 0. The functions and effects of the present invention constructed as described above are described below.

416069 V. Description of the invention (8) As shown in Figures 3 to 6, the resistor housing 180 is installed on the top of the FBT housing 110, and the bleeder resistor 100 is installed on the resistor housing. Within 180 °, a wavy (scanning) resistor pattern 140 is printed on the substrate 130 of the drain resistor 100. Openings 150 and 150 having certain depths are formed in adjacent corrugated portions of the resistor pattern 140, and these openings are provided for insulation. As shown in FIG. 4, at least one or more pairs of the first and second openings and 150 are formed in the undulated portion of t I1 printed on the substrate 130 of the bleed resistor 100 and the device pattern. In addition, the first opening 150 is opened at one edge * of the substrate 130, and the second opening 150 is opened at the opposite edge of the substrate 130. The first and second openings 150 and 150 are formed laterally in the substrate 130. The total length of the first and second openings 150 and 150 '+ L2) is made larger than the average substrate width between the first and second openings 150 and 150'. Ws. Therefore, through the first and second openings 150 and 150 that are relatively open, the resistor 140 can be formed by wave-like (scanning) printing. Therefore, a sufficient insulation distance can be maintained, and a more reinforced insulation can be ensured by the formation of the openings 150 and 150 '. FIG. 5 is a perspective view of a bleeder resistor in another embodiment of the present invention. In this embodiment, the width of the substrate 130 is not constant, and the paired first and second openings 150 and 150 ′ are properly fitted. A lateral direction is formed in the substrate 130. In addition, the sum (L, + L2) of the lengths of the first and second openings 150 and 150 0 'is larger than the average substrate width Ws between the first and second openings 150 and 150'. As shown in FIG. 3, if the bleeder resistor 100 is to be conveniently installed on the top of the FBT case 110, the resistor case 180 with the separator 160 is required.

Page 12 416069 V. Description of the invention (9) It is installed on the top of FBT case 11o. The resistor case 180 not only fixes the bleeder resistor 100 0 ′ but also strengthens the insulation characteristics of the bleeder resistor 100. That is, a plurality of separators 160 are formed inside the resistor case 180, so that the separators 160 can be tightly fitted to the openings 150 and 150 '. Therefore, not only the drain resistor 100 can be tightly secured, but also the wavy portions printed with the resistor pattern 1 40 can be completely insulated from each other. The height of the separator 1 must be greater than the thickness t of the substrate 130. Here, as shown in FIG. 6, the cover 21 is used to cover the resistor case 180, and the cover 210 has a plurality of surrounding walls 190 for forming a plurality of insertion grooves 200. After the drain resistor 100 is installed inside the resistor case 180, L fits the cover 210 to the resistor case 180, and the separator 160 fits tightly into the insertion groove 200 of the cover 210. Therefore, if a high voltage is supplied to the input terminal 120 of the resistor pattern 140 (printed on the ceramic substrate 130), the voltage across the resistor pattern 140 drops. In this case, since the separator 160 is located between the wavy portions of the resistor pattern 140, no glow discharge occurs. For example, if a voltage of 20 KV (dc) is supplied to the input terminal 120 of the resistor pattern 140, and if the width of the ceramic substrate 130 is i0mm and the length is 30mm, the total length of the resistor pattern 140 becomes 80mm »If the limit of the air voltage breakdown strength is 0.5KV / mm and then take into account environmental factors and thermal degradation factors, that is, a factor of 1 _ 8 is required. It should be maintained at 0.5KV / mm + 1. 8 = 0_ 2 8KV / mm ′ so it is necessary to have 20KV (dc) + 0.28KV / mm = Π ′ 4mm. Since the resistor pattern 140 has a length of 80ππη, sufficient resistance can be ensured. In addition, the wavy portion of the resistor pattern 14 is separated by

Page 13 4t6069 V. Description of Invention (ίο) Sheet 160 is separated ’so any glow discharge can be avoided. Because perfect insulation is achieved, traditional glass coatings are not required. Therefore, the bleed resistor can be used in the air. Therefore, it is not necessary to impregnate the traditional resin which can cause cracks. After the case 180, a final sealing process is performed. The final sealing process is completed by impregnating the finished product of F B T in epoxy resin, thereby completely insulating FBT from the outside. Therefore, the bleeder resistor is not affected by the shrinkage phenomenon of the conventional epoxy coating. In addition, final coatings such as glass coatings and epoxy resins should be applied, and should even be applied to soldered leads. In addition, the input terminal 12 and the output terminal u of the resistor pattern 140 may be made of a contact spring or an insulating rubber. If it can be handled. The simplification of the electrical discharge and the curing of the separator-type wave in the low-frequency part has been improved by epoxy impregnation and curing. The manufacturing process is made possible 'and has a significantly curved resistor pattern wave discharge. An opening is formed inside the resistor case. Therefore, the hip flex resistor further improves the drain resistance. The present invention described above, when manufactured without glass coating, baking, and softness. In any case, the anti-voltage destruction property makes it easy to manufacture the drain resistor. In addition, an opening is formed on the substrate by bending to prevent any resistors from being housed in the opening-like portions of the shunt resistors that are housed with separators, thereby completely insulating each other. : As mentioned above, slow is one of the preferred embodiments of the present invention to limit the implementation of the present invention. #Where according to the invention

416069 V. Description of the invention (11) The equivalent changes and modifications shall be covered by the scope of the invention patent. Page 15 1

Claims (1)

06069 6. Scope of patent application 1 An FBT bleeder resistor includes: a substrate, and a wave-shaped curved resistor pattern is formed on the substrate. The FBT bleeder resistor further includes: one or more pairs of openings formed In the substrate, each pair of openings includes-a first opening and a second opening; the first opening is opened on one edge of the substrate; the first and the second between the base 2. Such as a ceramic substrate 3. Such as Resistor, where the resistor is shown in Figure 4. One-by-one electrical openings form a cover for the resistor. 5. The two openings are open on opposite edges of the substrate; one and the second opening extend laterally on the substrate; The sum of the lengths of the first and second openings is greater than the average width of the first and second openings. The FBT bleeder resistor according to item 1 of the patent application, wherein said openings have a certain shape. The FBT bleeder resistor in any one of the scope of the patent application, the openings formed in the substrate are formed in the curved wave-shaped portion. A coupling device for a FBT bleed resistor includes: a bleed resistor; a resistor case for receiving the bleed resistor having an alternating and mutually facing manner; a separator in the resistor case; For inserting into the opening of the drain and protruding above the drain resistor; and for inserting the drain resistor into the casing to cover the top of the casing. Application of Patent No. 4 Scope of Discharging Resistor 416069 Scope of patent application The The cover has a plurality of insertion grooves for inserting the separator β of the multiple resistance is housing. 6. The coupling device of the FBT bleeder resistor according to item 4 of the patent application scope, wherein the The resistor case is integrally formed with the FBT case by an injection molding process of the resistor case. 1 糸 To 7. The coupling device of the FBT bleeder resistor according to item 4 of the scope of the patent application, wherein the resistor case for accommodating the bleeder resistor is not impregnated with an insulating resin. 8, a kind of F BTT includes: a high-voltage and low-voltage coil shaft 'and a coil winding thereon for generating a voltage; 153 an FBT case for receiving the high-voltage and low-voltage coil shaft and filled with an insulating resin * one point The bleeder resistor includes a resistor pattern; a bleeder resistor substrate has one or more pairs of first and first openings arranged adjacent to each other; the first opening is open at one edge of the substrate, and the second opening is open The sum of the opposite edges of the substrate and the length of the first and second openings is greater than the average width of the substrate between the first and second openings; the resistor pattern is waved between the first and second openings. Extending like: a resistor housing for receiving the bleeder resistor, and a separator for inserting into the opening of the bleeder resistor and protruding above the bleeder resistor; and a cover in the bleeder A drain resistor is inserted behind the casing to cover the top of the resistor casing. Page 17 Page 18