CN211297147U - Buried plane resistor mixed-voltage step multilayer circuit board - Google Patents
Buried plane resistor mixed-voltage step multilayer circuit board Download PDFInfo
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- CN211297147U CN211297147U CN202020346606.1U CN202020346606U CN211297147U CN 211297147 U CN211297147 U CN 211297147U CN 202020346606 U CN202020346606 U CN 202020346606U CN 211297147 U CN211297147 U CN 211297147U
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Abstract
A buried plane resistor mixed-voltage stepped multilayer circuit board comprises a high-frequency board, a low-frequency board and a bonding sheet; the high-frequency plate comprises an outer side double-sided copper-clad plate, an inner side double-sided copper-clad plate and a high-frequency bonding sheet positioned between the outer side double-sided copper-clad plate and the inner side double-sided copper-clad plate; the low-frequency board comprises at least 5 layers of single-sided low-frequency circuit boards stacked and laminated, one side of each single-sided low-frequency circuit board is provided with a copper layer, and the side, provided with the copper layer, of each single-sided low-frequency circuit board is far away from the high-frequency board. So integrated simultaneously has low frequency signal transmission and high frequency signal transmission function, and the function is more concentrated for equipment is more miniaturized, and the degree of integrating is higher.
Description
Technical Field
The utility model relates to an electron device field, especially a bury plane resistance and thoughtlessly press ladder multilayer circuit board.
Background
According to statistics of engineering technicians in an authoritative electronic circuit industry, in the design of an integrated circuit, the resistance accounts for about 30%, the capacitance accounts for about 40%, and other components account for about 30% in total. Because the resistor and the capacitor occupy most of components, the trouble is added to the assembly and connection process of the printed board, such as plug-in mounting and surface mounting process. In addition, if resistors are placed on the surface of the circuit board and connected to the circuit by wires, the complexity of the circuit is greatly increased and the performance of the circuit is degraded. Therefore, the embedded plane resistor is produced at the same time, which brings an unprecedented technical revolution to the design and manufacture of the printed board. The buried resistor, also called buried resistor or thin film resistor, is a technology of pressing a special resistor material on an insulating substrate, then forming an inner (outer) layer material with a designed required resistance value through processes of printing, etching and the like, and then pressing the inner (outer) layer material in (on) a printed board to form a planar resistor layer. With the trend of continuous and rapid miniaturization and multi-functionalization of electronic products, the number of passive components and the size of a printed board are required to be reduced as much as possible, and through the application of the planar embedded resistor manufacturing process technology, the functionality, better reliability and lower product cost of the printed board can be increased. On the other hand, high-temperature resistant printed boards such as high-frequency microwave boards have gained significant attention in recent years as indispensable supporting products for the high-tech and new-technology industries of electronic information. In order to meet the rapid development of modern communication technology, the manufacture of high-temperature resistant printed boards such as microwave high frequency boards and the like is not met in the production of simple single-sided boards and double-sided boards, and the requirement on the manufacture of microwave multilayer printed boards is more and more urgent.
The existing multilayer circuit board is a low-frequency multilayer circuit board or a high-frequency multilayer circuit board, and only can realize the integration of the low-frequency circuit board or the integration of the high-frequency circuit board.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a bury plane resistance mixed voltage ladder multilayer circuit board that it has low frequency signal transmission and high frequency signal transmission function, function more concentrated, equipment miniaturization more, the higher degree of integrating simultaneously to solve above-mentioned problem.
A buried plane resistor mixed-voltage stepped multilayer circuit board comprises a high-frequency board, a low-frequency board and a bonding sheet connected between the high-frequency board and the low-frequency board; the high-frequency plate comprises an outer side double-sided copper-clad plate, an inner side double-sided copper-clad plate and a high-frequency bonding sheet positioned between the outer side double-sided copper-clad plate and the inner side double-sided copper-clad plate; the outer-side double-sided copper-clad plate comprises a first substrate layer positioned in the middle, a first electrolytic copper foil layer positioned on one side of the first substrate layer and a first composite electrode layer with a resistance foil positioned on the other side of the first substrate layer, wherein the first composite electrode layer faces the high-frequency bonding sheet; the inner side double-sided copper-clad plate comprises a second substrate layer positioned in the middle, a second electrolytic copper foil layer positioned on one side of the second substrate layer and a second composite electrode layer with a resistance foil positioned on the other side of the second substrate layer, wherein the second composite electrode layer faces the high-frequency bonding sheet; the low-frequency board comprises at least 5 layers of single-sided low-frequency circuit boards stacked and laminated, one side of each single-sided low-frequency circuit board is provided with a copper layer, and the side, provided with the copper layer, of each single-sided low-frequency circuit board is far away from the high-frequency board.
Further, the first composite electrode layer comprises a first film resistance layer close to the first substrate layer and a third electrolytic copper foil layer far away from the first substrate layer; the second composite electrode layer comprises a second film resistance layer close to the second base material layer and a fourth electrolytic copper foil layer far away from the second base material layer.
Furthermore, a plurality of through holes penetrating through the high-frequency plate, the bonding sheet and the low-frequency plate are formed in the buried planar resistor mixed-voltage stepped multilayer circuit board.
Furthermore, a plurality of first blind holes are formed in the high-frequency board, the first blind holes penetrate through the first electrolytic copper foil layer, the first substrate layer and the first membrane resistance layer, a second conducting layer is arranged on the inner side wall of the first blind holes, and the second conducting layer is electrically connected with the third electrolytic copper foil layer.
Furthermore, a plurality of second blind holes are formed in the high-frequency plate, the second blind holes penetrate through the first electrolytic copper foil layer, the first substrate layer, the first composite electrode layer and the high-frequency bonding sheet, a third conducting layer is arranged on the inner side wall of each second blind hole, and the third conducting layer is electrically connected with the fourth electrolytic copper foil layer.
Furthermore, a plurality of third blind holes are formed in the buried planar resistor mixed-voltage stepped multilayer circuit board, the third blind holes penetrate through the high-frequency board and the bonding sheet, a fourth conducting layer is arranged on the inner side wall of each third blind hole, and the third conducting layer is connected with the low-frequency board.
Furthermore, a plurality of component mounting grooves are formed in the single-sided low-frequency circuit board, and the electronic components are located in the component mounting grooves and connected with the copper layer.
Further, the number of layers of the single-sided low-frequency circuit board is 10.
Furthermore, a plurality of inserting and connecting convex blocks are arranged on the edge of the low-frequency plate in an outward protruding mode, a terminal area is arranged on one side, away from the high-frequency plate, of each inserting and connecting convex block, and a plurality of conductive contact strips are arranged in the terminal area in parallel at intervals; one side of the insertion convex block facing the high-frequency plate is provided with a conductive contact piece.
Furthermore, at least one notch is formed in the position, close to the edge, of the low-frequency plate, the inner-side double-sided copper-clad plate of the high-frequency plate is exposed to the notch, and at least one high-frequency wiring terminal is arranged on the inner-side double-sided copper-clad plate at the notch.
Compared with the prior art, the buried planar resistor mixed-voltage stepped multilayer circuit board comprises a high-frequency board, a low-frequency board and a bonding sheet connected between the high-frequency board and the low-frequency board; the high-frequency plate comprises an outer side double-sided copper-clad plate, an inner side double-sided copper-clad plate and a high-frequency bonding sheet positioned between the outer side double-sided copper-clad plate and the inner side double-sided copper-clad plate; the outer-side double-sided copper-clad plate comprises a first substrate layer positioned in the middle, a first electrolytic copper foil layer positioned on one side of the first substrate layer and a first composite electrode layer with a resistance foil positioned on the other side of the first substrate layer, wherein the first composite electrode layer faces the high-frequency bonding sheet; the inner side double-sided copper-clad plate comprises a second substrate layer positioned in the middle, a second electrolytic copper foil layer positioned on one side of the second substrate layer and a second composite electrode layer with a resistance foil positioned on the other side of the second substrate layer, wherein the second composite electrode layer faces the high-frequency bonding sheet; the low-frequency board comprises at least 5 layers of single-sided low-frequency circuit boards stacked and laminated, one side of each single-sided low-frequency circuit board is provided with a copper layer, and the side, provided with the copper layer, of each single-sided low-frequency circuit board is far away from the high-frequency board. So integrated simultaneously has low frequency signal transmission and high frequency signal transmission function, and the function is more concentrated for equipment is more miniaturized, and the degree of integrating is higher.
Drawings
Embodiments of the present invention are described below with reference to the accompanying drawings, in which:
fig. 1 is the utility model provides a bury side view of plane resistance mixed voltage ladder multilayer circuit board.
Fig. 2 is a side-sectional schematic view of the high-frequency board of fig. 1.
Fig. 3 is a schematic view of the low frequency board of fig. 1.
Fig. 4 is a schematic view of a partial microstructure of the composite electrode layer of fig. 2.
Fig. 5 is the utility model provides a bury the stereogram at first visual angle of plane resistance mixed voltage ladder multilayer circuit board.
Fig. 6 is a schematic perspective view of a second viewing angle of the buried planar resistor mixed-voltage stepped multilayer circuit board.
Detailed Description
The following describes in further detail specific embodiments of the present invention based on the drawings. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.
Referring to fig. 1, the present invention provides a buried planar resistor mixed-voltage stepped multilayer circuit board, which includes a high frequency board 10, a low frequency board 20, and a bonding sheet 30 connected between the high frequency board 10 and the low frequency board 20.
Referring to fig. 2, the high frequency board 10 includes an outer-side double-sided copper-clad plate 11, an inner-side double-sided copper-clad plate 13, and a high frequency bonding sheet 12 located between the outer-side double-sided copper-clad plate 11 and the inner-side double-sided copper-clad plate 13.
The outer double-sided copper-clad plate 11 comprises a first base material layer 111 located in the middle, a first electrolytic copper foil layer 112 located on one side of the first base material layer 111, and a first composite electrode layer 113 located on the other side of the first base material layer 111 and provided with a resistance foil. The first composite electrode layer 113 faces the high-frequency adhesive sheet 12.
The inner-side double-sided copper-clad plate 13 comprises a second substrate layer 131 positioned in the middle, a second electrolytic copper foil layer 132 positioned on one side of the second substrate layer 131, and a second composite electrode layer 133 positioned on the other side of the second substrate layer 131 and provided with a resistance foil. The second composite electrode layer 133 faces the high-frequency adhesive sheet 12.
The first substrate layer 11 and the second substrate layer 131 are both made of ceramic powder filled polytetrafluoroethylene glass cloth.
The first composite electrode layer 113 includes a first film resistance layer 1131 close to the first substrate layer 111 and a third electrolytic copper foil layer 1132 far from the first substrate layer 111.
The second composite electrode layer 133 includes a second film resistance layer 1331 close to the second substrate layer 131 and a fourth electrolytic copper foil layer 1332 far from the second substrate layer 131.
The high-frequency adhesive sheet 12 includes a polytetrafluoroethylene resin layer 121 and thermosetting resin layers 122 located on both sides of the polytetrafluoroethylene resin layer 121.
The first film resistance layer 1131 and the second film resistance layer 1331 are both nickel-phosphorus alloy films.
Referring to fig. 3, a first etching is performed on the first composite electrode layer 113 or the second composite electrode layer 133 to etch away the third electrolytic copper foil layer 1132 or the fourth electrolytic copper foil layer 1332 in the non-circuit region; then, performing a second etching on the non-circuit region to etch away the first film resistor 1131 or the second film resistor 1331 in the non-circuit region; then, a third etching is performed at the position where the resistor needs to be set, the third electrolytic copper foil layer 1132 or the fourth electrolytic copper foil layer 1332 at the position where the resistor needs to be set is etched away, and the remaining first film resistor layer 1131 or the second film resistor layer 1331 forms an embedded resistor.
In the portion having both the third electrolytic copper foil layer 1132 and the first film resistance layer 1131, since the resistance value of the first film resistance layer 1131 is much larger than that of the third electrolytic copper foil layer 1132, an electrical signal is transmitted in the third electrolytic copper foil layer 1132, and the third electrolytic copper foil layer 1132 forms a microstrip line; similarly, in the portion having both the fourth electrolytic copper foil layer 1332 and the second film resistor layer 1331, since the resistance value of the second film resistor layer 1331 is much larger than that of the fourth electrolytic copper foil layer 1332, an electrical signal is transmitted through the fourth electrolytic copper foil layer 1332, and the fourth electrolytic copper foil layer 1332 forms a microstrip line.
At the embedded resistor, since the third electrolytic copper foil layer 1132 or the fourth electrolytic copper foil layer 1332 are not present, an electrical signal will be transmitted in the first film resistor layer 1131 or the second film resistor layer 1331.
The first composite electrode layer 113 or the second composite electrode layer 133 forms a circuit having a microstrip line and an embedded resistor in the above manner.
The adhesive sheet 30 is an epoxy adhesive sheet.
The utility model provides a bury and be provided with a plurality of via holes 40 that run through high frequency board 10, bonding sheet 30 and low frequency board 20 on the planar resistance thoughtlessly presses ladder multilayer circuit board, can set up first conducting layer 41 or not set up the conducting layer on via holes 40's the inside wall.
The high frequency board 10 is provided with a plurality of first blind holes 14, the first blind holes 14 pass through the first electrolytic copper foil layer 112, the first substrate layer 111 and the first film resistor layer 1131, the inner side wall of the first blind holes 14 is provided with a second conductive layer 141, and the second conductive layer 141 is electrically connected with the third electrolytic copper foil layer 1132.
The high frequency board 10 is provided with a plurality of second blind holes 15, the second blind holes 15 pass through the first electrolytic copper foil layer 112, the first substrate layer 111, the first composite electrode layer 113 and the high frequency bonding sheet 12, the inner side walls of the second blind holes 15 are provided with a third conductive layer 151, and the third conductive layer 151 is electrically connected with the fourth electrolytic copper foil layer 1332.
The utility model provides a bury and seted up a plurality of third blind holes 16 on the plane resistance thoughtlessly presses ladder multilayer circuit board, third blind hole 16 passes high frequency board 10 and bonding sheet 30, is provided with fourth conducting layer 161 on third blind hole 16's the inside wall, third conducting layer 151 and the line connection on the low frequency board 20.
Referring to fig. 4, the low frequency board 20 includes at least 5 stacked and laminated single-sided low frequency circuit boards 21, one side of the single-sided low frequency circuit board 21 has a copper layer 211, and the side of the single-sided low frequency circuit board 21 having the copper layer 211 is disposed away from the high frequency board 10. The copper layer 211 is provided with a circuit as required. The single-sided low-frequency circuit board 21 is also provided with a plurality of component mounting grooves, and electronic components are positioned in the component mounting grooves and connected with circuits on the copper layer 211.
In the present embodiment, the number of layers of the single-sided low-frequency wiring board 21 is 10.
A plurality of stepped holes are formed in the low-frequency board 20, a fifth conducting layer is plated on the inner side wall of each stepped hole, and the stepped holes can achieve signal transmission between any two layers of single-sided low-frequency circuit boards 21.
Referring to fig. 5 and 6, a plurality of plug bumps 50 are protruded from the edge of the low frequency board 20, a terminal area 51 is disposed on a side of the plug bump 50 away from the high frequency board 10, and a plurality of conductive contact strips 52 are disposed in the terminal area 51 in parallel and at intervals. The side of the plug-in lug 50 facing the high-frequency board 10 is provided with a conductive contact 53, the area of the conductive contact 53 being the same as or corresponding to the area of the terminal area 51. The conductive contact strip 52 is used for connection with an external power supply terminal and a signal terminal, and the conductive contact piece 53 is used for connection with an external ground terminal. The plug-in bumps 50 are connected with the external terminals in a plug-in manner, so that the connection manner is simple, and meanwhile, the conductive contact pieces 53 and the terminal areas 51 are arranged on two sides, so that potential crosstalk can be avoided. The conductive contact strips 52 can be connected with the copper layer 211 of each single-sided low-frequency circuit board 21 through the stepped holes.
At least one notch 60 is formed in the position, close to the edge, of the low-frequency plate 20, the inner-side double-sided copper-clad plate 13 of the high-frequency plate 10 is exposed to the notch 60, and at least one high-frequency wiring terminal 61 is arranged on the inner-side double-sided copper-clad plate 13 of the notch 60, so that wiring of the high-frequency plate 10 is facilitated.
Compared with the prior art, the buried planar resistor mixed-voltage stepped multilayer circuit board comprises a high-frequency board 10, a low-frequency board 20 and a bonding sheet 30 connected between the high-frequency board 10 and the low-frequency board 20; the high-frequency plate 10 comprises an outer side double-sided copper-clad plate 11, an inner side double-sided copper-clad plate 13 and a high-frequency bonding sheet 12 positioned between the outer side double-sided copper-clad plate 11 and the inner side double-sided copper-clad plate 13; the outer double-sided copper-clad plate 11 comprises a first base material layer 111 positioned in the middle, a first electrolytic copper foil layer 112 positioned on one side of the first base material layer 111 and a first composite electrode layer 113 with a resistance foil positioned on the other side of the first base material layer 111, wherein the first composite electrode layer 113 faces the high-frequency bonding sheet 12; the inner-side double-sided copper-clad plate 13 comprises a second base material layer 131 positioned in the middle, a second electrolytic copper foil layer 132 positioned on one side of the second base material layer 131, and a second composite electrode layer 133 with a resistance foil positioned on the other side of the second base material layer 131, wherein the second composite electrode layer 133 faces the high-frequency bonding sheet 12; the low frequency board 20 includes at least 5 layers of the single-sided low frequency wiring board 21 stacked and laminated, one side of the single-sided low frequency wiring board 21 having the copper layer 211, and the side of the single-sided low frequency wiring board 21 having the copper layer 211 disposed away from the high frequency board 10. So integrated simultaneously has low frequency signal transmission and high frequency signal transmission function, function more concentrated, equipment miniaturization more, the degree of integrating is higher.
The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention, and any modification, equivalent replacement or improvement within the spirit of the present invention is encompassed by the claims of the present invention.
Claims (10)
1. The utility model provides a bury plane resistance and thoughtlessly press ladder multilayer circuit board which characterized in that: comprises a high-frequency plate, a low-frequency plate and a bonding sheet connected between the high-frequency plate and the low-frequency plate; the high-frequency plate comprises an outer side double-sided copper-clad plate, an inner side double-sided copper-clad plate and a high-frequency bonding sheet positioned between the outer side double-sided copper-clad plate and the inner side double-sided copper-clad plate; the outer-side double-sided copper-clad plate comprises a first substrate layer positioned in the middle, a first electrolytic copper foil layer positioned on one side of the first substrate layer and a first composite electrode layer with a resistance foil positioned on the other side of the first substrate layer, wherein the first composite electrode layer faces the high-frequency bonding sheet; the inner side double-sided copper-clad plate comprises a second substrate layer positioned in the middle, a second electrolytic copper foil layer positioned on one side of the second substrate layer and a second composite electrode layer with a resistance foil positioned on the other side of the second substrate layer, wherein the second composite electrode layer faces the high-frequency bonding sheet; the low-frequency board comprises at least 5 layers of single-sided low-frequency circuit boards stacked and laminated, one side of each single-sided low-frequency circuit board is provided with a copper layer, and the side, provided with the copper layer, of each single-sided low-frequency circuit board is far away from the high-frequency board.
2. The buried planar resistor-voltage-mixing multilayer circuit board of claim 1, wherein: the first composite electrode layer comprises a first film resistance layer close to the first base material layer and a third electrolytic copper foil layer far away from the first base material layer; the second composite electrode layer comprises a second film resistance layer close to the second base material layer and a fourth electrolytic copper foil layer far away from the second base material layer.
3. The buried planar resistor-voltage-mixing multilayer circuit board of claim 1, wherein: a plurality of through holes penetrating through the high-frequency plate, the bonding sheet and the low-frequency plate are formed in the buried planar resistor mixed-voltage stepped multilayer circuit board.
4. The buried planar resistor-voltage-mixing multilayer circuit board of claim 2, wherein: a plurality of first blind holes are formed in the high-frequency board, the first blind holes penetrate through the first electrolytic copper foil layer, the first base material layer and the first membrane resistance layer, a second conducting layer is arranged on the inner side wall of each first blind hole, and the second conducting layer is electrically connected with the third electrolytic copper foil layer.
5. The buried planar resistor-voltage-mixing multilayer circuit board of claim 2, wherein: a plurality of second blind holes are formed in the high-frequency plate, the second blind holes penetrate through the first electrolytic copper foil layer, the first base material layer, the first composite electrode layer and the high-frequency bonding sheet, a third conducting layer is arranged on the inner side wall of each second blind hole, and the third conducting layer is electrically connected with the fourth electrolytic copper foil layer.
6. The buried planar resistor-voltage-mixing multilayer circuit board of claim 1, wherein: a plurality of third blind holes are formed in the buried plane resistor mixed-voltage stepped multilayer circuit board, the third blind holes penetrate through the high-frequency board and the bonding sheet, a fourth conducting layer is arranged on the inner side wall of each third blind hole, and the third conducting layer is connected with the low-frequency board.
7. The buried planar resistor-voltage-mixing multilayer circuit board of claim 1, wherein: a plurality of element mounting grooves are formed in the single-sided low-frequency circuit board, and electronic elements are located in the element mounting grooves and connected with the copper layer.
8. The buried planar resistor-voltage-mixing multilayer circuit board of claim 1, wherein: the number of layers of the single-sided low-frequency circuit board is 10.
9. The buried planar resistor-voltage-mixing multilayer circuit board of claim 1, wherein: the edge of the low-frequency plate is outwards provided with a plurality of inserting lugs in a protruding mode, one side, away from the high-frequency plate, of each inserting lug is provided with a terminal area, and a plurality of conductive contact strips are arranged in the terminal area in parallel at intervals; one side of the insertion convex block facing the high-frequency plate is provided with a conductive contact piece.
10. The buried planar resistor-voltage-mixing multilayer circuit board of claim 1, wherein: at least one notch is formed in the position, close to the edge, of the low-frequency plate, the inner-side double-sided copper-clad plate of the high-frequency plate is exposed to the notch, and at least one high-frequency wiring terminal is arranged on the inner-side double-sided copper-clad plate at the notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020346606.1U CN211297147U (en) | 2020-03-18 | 2020-03-18 | Buried plane resistor mixed-voltage step multilayer circuit board |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020346606.1U CN211297147U (en) | 2020-03-18 | 2020-03-18 | Buried plane resistor mixed-voltage step multilayer circuit board |
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| CN211297147U true CN211297147U (en) | 2020-08-18 |
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| CN202020346606.1U Active CN211297147U (en) | 2020-03-18 | 2020-03-18 | Buried plane resistor mixed-voltage step multilayer circuit board |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111263511A (en) * | 2020-03-18 | 2020-06-09 | 浙江万正电子科技有限公司 | Buried plane resistor mixed-voltage step multilayer circuit board |
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2020
- 2020-03-18 CN CN202020346606.1U patent/CN211297147U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111263511A (en) * | 2020-03-18 | 2020-06-09 | 浙江万正电子科技有限公司 | Buried plane resistor mixed-voltage step multilayer circuit board |
| CN111263511B (en) * | 2020-03-18 | 2024-07-12 | 浙江万正电子科技股份有限公司 | Buried plane resistor mixed-voltage stepped multilayer circuit board |
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Address after: 314100 beihuanqiao Development Zone, ganyao Town, Jiashan County, Jiaxing City, Zhejiang Province Patentee after: Zhejiang Wanzheng Electronic Technology Co.,Ltd. Address before: 314100 beihuanqiao Development Zone, ganyao Town, Jiashan County, Jiaxing City, Zhejiang Province Patentee before: ZHEJIANG WANZHENG ELECTRONICS SCIENCE AND TECHNOLOGY Co.,Ltd. |