TWI702888B - Circuit board and electronic device - Google Patents

Abstract

A circuit board including a substrate and at least one circuit structure is provided. The substrate has a plurality of first slots, each of the first slots extends along a first axis, and a length of each of the first slots along the first axis is longer than lengths of each of the first slots along other directions. The circuit structure is disposed on the substrate and includes a plurality of arc segments and a plurality of extending segments. Each of the arc segments is connected between two of the extending segments such that the circuit structure is circuitous. The circuit structure and each of the first slots have an interval therebetween such that each of the first slots and a partial surface of the substrate are exposed by the circuit structure. Each of the first slots is located between two of the extending segments adjacent to each other, and the first axis of each of the first slots passes through the corresponding arc segment. In addition, an electronic device having the circuit board is also provided.

Description

Circuit board and electronic device

The invention relates to a circuit board and an electronic device.

At present, wearable devices are developing rapidly, including smart bracelets, watches, head-mounted display devices, wearables, etc., with more and more applications, not only in medical, entertainment and other fields, but also in general life, sports and leisure To have a role to play.

Applying a stretchable circuit board to a wearable device can make the wearable device more accurate in measuring the state of the human body and make it more comfortable to be worn by the user. However, the circuit structure of the circuit board is easily damaged or broken due to stretching, resulting in a sudden increase in its resistance value and affecting its normal performance.

The invention provides a circuit board and an electronic device, so that the circuit structure of the circuit board is not easily damaged or broken due to the stretching of the circuit board.

The circuit board of the present invention includes a substrate and at least one circuit structure. The substrate has a plurality of first slots, each of the first slots extends along a first axis, and the length of each first slot along the first axis is greater than the length of each first slot along other directions. The circuit structure is disposed on the substrate and includes a plurality of arc sections and a plurality of extension sections. Each arc-shaped section is connected between the two extension sections to make the circuit structure in a circuitous shape. There is a gap between the circuit structure and each of the first slots, so that each of the first slots and part of the surface of the substrate are exposed by the circuit structure. Each first slot is located between two adjacent extension sections, and the first axis of each first slot passes through the corresponding arc-shaped section.

The electronic device of the present invention includes a circuit board and two electronic components. The circuit board includes a substrate and at least one circuit structure. The substrate has a plurality of first slots, each of the first slots extends along a first axis, and the length of each first slot along the first axis is greater than the length of each first slot along other directions. The circuit structure is disposed on the substrate and includes a plurality of arc sections and a plurality of extension sections. Each arc-shaped section is connected between the two extension sections to make the circuit structure in a circuitous shape. There is a gap between the circuit structure and each of the first slots, so that each of the first slots and part of the surface of the substrate are exposed by the circuit structure. Each first slot is located between two adjacent extension sections, and the first axis of each first slot passes through the corresponding arc-shaped section. The two electronic components are electrically connected to each other through the circuit board.

Based on the above, in the circuit board of the present invention, there is a gap between the circuit structure and the slot of the substrate, that is, the circuit structure does not completely cover the surface of the substrate, but only covers part of the surface of the substrate, so that the circuit structure is not too much. The first slot adjacent to the substrate. In this way, when the circuit board is stretched, the stress concentration generated at the end of the first slot of the substrate will not be directly transmitted to the circuit structure, and the circuit structure can be effectively prevented from being damaged or broken due to the stretching of the circuit board. In addition, the extension axis of the first slot (that is, the first axis) passes through the corresponding arc-shaped section, so that the arc-shaped section is adjacent to the end of the first slot, so that the arc-shaped section without sharp corners can be used. To further reduce the degree of stress concentration.

In order to make the above-mentioned features of the present invention more obvious and comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.

Fig. 1 is a top view of a circuit board according to an embodiment of the present invention. Fig. 2 is a partial enlarged view of the circuit board of Fig. 1. Please refer to FIG. 1 and FIG. 2, the circuit board 100 of this embodiment includes a substrate 110 and at least one circuit structure 120 (multiple are shown). The substrate 110 has a plurality of first slots 110a, and each first slot 110a extends along a first axis A1, and the length of each first slot 110a along the first axis A1 is greater than the length of each first slot 110a along other directions . Each circuit structure 120 is disposed on the substrate 110 and includes a plurality of arc-shaped sections 122 and a plurality of extension sections 124. Each arc-shaped section 122 is connected between the two extending sections 124 so that the circuit structure 120 has a roundabout shape, and each first slot 110 a is located between two adjacent extending sections 124. The circuit board 100 can be stretched along the direction X perpendicular to the first axis A1 by the deformation of the first slots 110a and the arc-shaped sections 122, so as to provide a one-dimensional stretching effect.

As shown in FIGS. 1 and 2, there is a gap between the circuit structure 120 and each of the first grooves 110 a of the substrate 110, so that each of the first grooves 110 a and part of the surface of the substrate 110 are exposed by the circuit structure 120. That is, the circuit structure 120 does not completely cover the surface of the substrate 110, but only covers a part of the surface of the substrate 110, so that the circuit structure 120 is not too close to the first slot 110a of the substrate 110. In this way, when the circuit board 110 is stretched, the stress concentration generated at the end of the first slot 110a of the substrate 110 will not be directly transmitted to the circuit structure 120, and the circuit structure 120 can be effectively prevented from being stretched by the circuit board 110. And damaged, broken.

In addition, in this embodiment, the extension axis (ie, the first axis A1) of each first slot 110a passes through the corresponding arc section 122, so that the arc section 122 is adjacent to the end of the first slot 110a, so that the The arc-shaped section 122 without sharp corners further reduces the degree of stress concentration.

In this embodiment, each first slot 110a of the substrate 110 is, for example, a slit instead of a linear slot, each extension section 124 of the circuit structure 120 extends along a straight direction, and each of two adjacent extension sections 124 are parallel to each other. The ratio L/x between the length L of each first slot 110a along the first axis A1 and the distance x between the two adjacent first slots 110a along the direction perpendicular to the first axis A1 is, for example, greater than 5, so as to maintain stable tension. Stretch characteristics.

The present invention does not impose restrictions on the form of the slot, which is illustrated below with reference to FIGS. 3 to 7.

Fig. 3 is a partial enlarged view of a circuit board according to another embodiment of the present invention. As shown in FIG. 3, each first slot 110a1 of the substrate 110' is an elliptical slot to provide a two-dimensional stretching effect, and the circuit structure 120' is connected to two adjacent extensions of the arc-shaped section 122' The sections 124' are inclined to each other in accordance with the shape of the first slot 110a1. 4 to 8 show circuit boards according to other embodiments of the invention. As shown in FIG. 4, each first slot 110a2 is a diamond-shaped slot to provide a two-dimensional stretching effect. As shown in FIG. 5, the linear first slots 110a3 and 110a4 that intersect each other have extending directions perpendicular to each other to provide a two-dimensional stretching effect. As shown in FIG. 6, the linear first slots 110a5, 110a6 that do not intersect each other have their extending directions perpendicular to each other to provide a two-dimensional stretching effect. As shown in FIGS. 7 and 8, the linear first grooves 110a7 and 110a8 that intersect each other have different extension directions and are inclined to provide a two-dimensional stretching effect. The difference between FIG. 8 and FIG. 7 is that: More first slots 110a7 and 110a8 in FIG. 8 are connected in sequence to form a continuous slot structure. In other embodiments, the first slot may be a rectangular slot, a hexagonal slot or other shapes of slots, which is not limited in the present invention.

In other embodiments, a variety of circuit structures and chips with different design parameters, passive electronic components or active electronic components can be integrated on the same substrate. This is illustrated below with reference to FIGS. 9 and 10.

Fig. 9 is a top view of a circuit board according to another embodiment of the present invention. In the circuit board 200 of FIG. 9, the configuration and function of the substrate 210 and its first slot 210a and the circuit structure 220A, 220B, 220C are similar to the configuration and function of the substrate and its first slot and circuit structure of the previous embodiment The method will not be repeated here. The embodiment shown in FIG. 9 is different from the previous embodiment in that the circuit structures 220A, 220B, 220C and the corresponding first slots 210a with different design parameters are respectively arranged in different areas of the substrate 210, wherein the circuit structures 220A, 220C And the form of the corresponding first slot 210a, for example, is similar to that of the circuit structure 120 and the corresponding first slot 110a shown in FIG. 1, and the form of the circuit structure 220B and the corresponding first slot 210a is, for example, similar to that of FIG. The circuit structure 120' and the corresponding first slot 110a1 form, and the ratio of the length of the first slot 210a of the circuit structure 220A to the distance between two adjacent first slots 210a (as the aforementioned ratio L /x) is less than the ratio of the circuit structure 220C and greater than the ratio of the circuit structure 220B. In other words, the difference in the design parameters includes the difference in the shape of the slot and the difference in the ratio of the circuit structure. For example, the ratio of the length of the first slot 210a of the circuit structure 220A to the distance between two adjacent first slots 210a is, for example, 13, the ratio of the circuit structure 220B is, for example, 8. The ratio is, for example, 17, but the present invention is not limited to this. Furthermore, the design parameters may also include the ratio L/ between the length L of each first slot 110a along the first axis A1 and the distance y of two adjacent first slots 110a along a direction parallel to the first axis A1. y, the present invention does not impose restrictions on this.

Therefore, the circuit board 200 has a moderate stretching effect at the circuit structure 220A, a smaller stretching effect and a two-dimensional stretching effect at the circuit structure 220B, and a greater degree of stretching effect at the circuit structure 220C. Stretching effect. For example, the circuit structures 220A, 220B, and 220C can be configured to correspond to the user's shoulders, biceps, and elbows, respectively, so as to meet the moderate stretching effect required by the shoulders and the longer biceps required. A small degree of stretching effect and a two-dimensional stretching effect, a larger degree of stretching effect required for the elbow. The present invention is not limited to this.

Fig. 10 is a top view of a circuit board according to another embodiment of the present invention. In the circuit board 300 of FIG. 10, the substrate 310 and its first slot 310a and the circuit structure 320A, 320B, 320C are similar to the substrate 210 and its first slot 210a and the circuit structure 220A, 220B in FIG. The configuration and function of the 220C will not be repeated here. The embodiment shown in FIG. 10 is different from the embodiment shown in FIG. 9 in that the circuit board 300 further includes a chip 330 disposed on the substrate 310 and electrically connected to the circuit structures 320A and 320B. Among them, the wafer 330 is a non-stretchable element, that is, the circuit board 300 shown in FIG. 10 integrates a stretchable structure and a non-stretchable structure. The chip 330 can be replaced with passive components such as resistors, capacitors, inductors, or active components other than passive components such as transistors, and the present invention is not limited thereto.

FIG. 11 is a schematic diagram of splicing multiple circuit boards according to another embodiment of the present invention. In the circuit boards 400 and 500 of FIG. 11, the configuration and function of the substrate 410 and its first slot 410a and the circuit structure 420 are similar to those of the substrate 510 and the first slot 410a and the circuit structure 520. The configuration and function of the substrate and its first slot and circuit structure of the embodiment will not be repeated here. The embodiment shown in FIG. 10 is different from the previous embodiments in that the circuit board 400 and the circuit board 500 are arranged in different directions and joined to each other to provide stretching effects in different directions on adjacent parts of the user's body.

Fig. 12 is a top view of a circuit board according to another embodiment of the present invention. Fig. 13 is a cross-sectional view of the circuit board of Fig. 12 along the line I-I. To make the drawing clearer, FIG. 13 schematically illustrates the circuit structure 620 in a simplified manner. In the circuit board 600 of FIG. 12, the substrate 610, its first slot 610a, and the circuit structure 620 are configured and operated in a manner similar to that of the substrate and its first slot and circuit structure in the previous embodiment. No longer. The embodiment shown in FIG. 12 is different from the foregoing embodiments in that the circuit board 600 further includes a protective layer 640 and a supporting structure 650, and the materials of the protective layer 640 and the supporting structure 650 are, for example, insulating materials. The protective layer 640 is disposed on the substrate 610 to shield the circuit structure 620 and prevent the circuit structure 620 from directly contacting external objects and being damaged. The supporting structure 650 is supported between the substrate 610 and the protective layer 640 so that there is a distance between the protective layer 640 and the substrate 610, and the distance prevents the substrate 610 and its first slot 610a from being stretched in the direction Z during stretching and deformation. The protective layer 640 is restricted and can be deformed smoothly.

Fig. 14 is a top view of a circuit board according to another embodiment of the present invention. FIG. 15 shows that the distribution range of the first slot and circuit structure of FIG. 14 is reduced. In the circuit board 700 of FIGS. 14 and 15, the substrate 710 and its first slot 710a and the circuit structure 720 are similar in configuration and function to the substrate and its first slot and circuit structure in the previous embodiment. , I won’t repeat it here. The difference between the embodiment shown in FIG. 14 and the embodiment shown in FIG. 15 is as follows. The first slot 710a and the circuit structure 720 of FIG. 14 have a larger distribution range in the middle area of the substrate 710. This configuration can improve the tensile deformation ability of the circuit board 700, thereby reducing the plastic strain of the circuit board 700 when it is stretched. . The first slot 710a and the circuit structure 720 in FIG. 15 have a smaller distribution range in the middle area of the substrate 710. This configuration can reduce the distribution range of the circuit structure 720 in a circuitous shape, thereby reducing the initial resistance of the circuit board 700. In terms of design, it can be configured in the manner shown in FIG. 14 to reduce the plastic strain, or configured in the manner shown in FIG. 15 to reduce the initial resistance.

表1The following table 1 (results of stretching once) compares the plastic strain, the initial resistance, and the resistance change rate based on the initial resistance in the embodiment shown in FIG. 14 and the embodiment shown in FIG. Compare the calculation results of the simulation software.

Table 1

As shown in Table 1 above, the ratio L/x (like the aforementioned ratio L/x) of the length of the first slot 710a of the embodiment shown in FIG. 14 and the distance between two adjacent first slots 710a is the same as that of FIG. 15 The ratios of the illustrated embodiment are all 10, for example. In addition, the number of the first grooves 710a along the direction Y in the embodiment shown in FIG. 14 and the embodiment shown in FIG. 15 are, for example, 6.5. Under this premise, based on the difference between the filled configuration mode of the embodiment shown in FIG. 14 and the unfilled configuration mode of the embodiment shown in FIG. 15, the circuit board 700 of FIG. The plastic strain is 1.55%, which is lower than the maximum plastic strain of 4.91% when the circuit board 700 in FIG. 15 is stretched. In addition, the initial resistance of the wiring board 700 in FIG. 14 is 21.18Ω, which is higher than the initial resistance of the wiring board 700 in FIG. 15 being 13.40Ω. In addition, the resistance change rate of the circuit board 700 when stretched in FIG. 14 is 1.42%, which is higher than the resistance change rate of the circuit board 700 when stretched in FIG. 15 is 0.12%.

Fig. 16 is a top view of a circuit board according to another embodiment of the present invention. FIG. 17 is a partial enlarged view of the circuit board of FIG. 16, wherein FIG. 17 corresponds to the area R1 of FIG. 16. In the embodiment shown in FIGS. 16 and 17, the configuration and function of the substrate 810 and its first slot 810a and the circuit structure 820 are similar to the configuration and function of the substrate and its first slot and circuit structure of the previous embodiment. , I won’t repeat it here. The embodiment shown in FIG. 16 and FIG. 17 is different from the previous embodiment in that the circuit board 800 further includes a plurality of connection lines 860, and each connection line 860 is connected between two line structures 820 so that these line structures 820 and these connections The lines 860 together form a circuitous structure. The substrate 810 further has a plurality of second slots 810b, each of the second slots 810b is located between two adjacent circuit structures 820, and each of the second slots 810b extends along a second axis A2 perpendicular to the first axis A1. The circuit board 800 can be stretched in a direction perpendicular to the second axis A2 by the deformation of the second slots 810b and the connecting lines 860. That is to say, in the embodiment shown in FIG. 16 and FIG. 17, in addition to the circuit structure 820 itself as shown in FIG. 17, the circuit structure can cooperate with the first slot 810a to provide a stretching effect in the direction X. 820 and a plurality of connecting lines 860 also jointly form a circuitous structure, which can cooperate with the second slot 810b to provide a stretching effect in the direction Y.

FIG. 18 shows the resistance change rate of a circuit board obtained by a tensile test according to an embodiment of the present invention. The test condition is that the tensile amount is 10% and the tensile time is within 6000 seconds (1000 repeated tensile tests), and For example, it corresponds to a circuit board 700 similar to that shown in FIG. 14. As shown in FIG. 18, the circuit board of the embodiment of the present invention has a resistance change rate of less than 5% after being stretched for a long time. It can be seen that the embodiment of the present invention designs the circuit structure to not completely cover The surface of the substrate can effectively reduce the resistance change rate when it is stretched.

FIG. 19 is a schematic diagram of an electronic device according to an embodiment of the invention. As shown in FIG. 19, the two electronic components 52 and 54 can be electrically connected to each other through the circuit board 100 of the above-mentioned embodiment, thereby forming an electronic device 50. The electronic device 50 is, for example, a wearable electronic device, and the two electronic components 52, 54 can be human body state measuring components, information display components or other types of components of the wearable electronic device, and the present invention is not limited thereto. In other embodiments, the two electronic components 52 and 54 can be electrically connected to each other via the circuit board of any of the other embodiments described above, and the present invention is not limited thereto.

The present invention does not limit the number of circuit structures between two adjacent slots of the circuit board. The circuit board 400 shown in FIG. 11 is taken as an example to describe this in the following. FIG. 20 is a partial enlarged view of the circuit board of FIG. 11, wherein FIG. 20 corresponds to the area R2 of FIG. 11. As shown in FIG. 20, two circuit structures 420 are arranged side by side and extend between two adjacent first slots 410a. In other embodiments, a larger number of circuit structures can be arranged in parallel and extend between two adjacent first slots 410a, which is not limited in the present invention.

Fig. 21 is a cross-sectional view of the circuit board of Fig. 22 along line II-II. To make the drawing clearer, FIG. 21 schematically depicts the circuit structure 420 in a simplified manner. The circuit board 400 further includes a protective layer 440. The protective layer 440 is made of, for example, an insulating material. The protective layer 440 is disposed on the substrate 410 to shield the circuit structure 420 and prevent the circuit structure 420 from directly contacting external objects and being damaged. The protection layer 440 of FIG. 21 is different from the protection layer 640 of FIG. 13 in that the protection layer 440 directly covers the substrate 410 and the circuit structure 420, instead of being supported by the support structure 650 like the protection layer 640 of FIG. On the substrate 610 and the circuit structure 620. In addition, the protective layer 440 of FIG. 21 may have a third slot 440a to provide a stretchable effect.

Furthermore, in other embodiments, the circuit board may have a multi-layer structure, and the above-mentioned parallel circuit structures may be located on different layers of the circuit board, as illustrated by the following diagrams. Fig. 22 is a cross-sectional view of a circuit board according to another embodiment of the present invention. Fig. 23 is a top view of a partial structure of the circuit board of Fig. 22. Fig. 24 is a bottom view of a partial structure of the circuit board of Fig. 22. In order to make the drawing clearer, FIG. 22 schematically illustrates the circuit structures 920A and 920B in a simplified manner, and FIG. 23 and FIG. 24 do not illustrate the protective layers 940A and 940B. Please refer to FIGS. 22 to 24, part of the circuit structure 920A and another part of the circuit structure 920B of this embodiment are respectively disposed on two opposite surfaces of the substrate 910, the protective layers 940A and 940B are respectively disposed on two opposite surfaces of the substrate 910, and the circuit structure 920A and 920B are respectively shielded by protective layers 940A and 940B. The circuit structure 920B is electrically connected to the pad on the surface of the circuit structure 920A through the via 950. In other embodiments, the via 950 may not be provided, and the corresponding pads are provided on the surface where the circuit structure 920B is located.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall be determined by the scope of the attached patent application.

50‧‧‧Electronic device 52, 54‧‧‧Electronic components 100, 200, 300, 400, 500, 600, 700, 800‧‧‧PCB 110, 110’, 210, 310, 410, 510, 610, 710, 810‧‧‧Substrate 110a, 110a1, 110a2, 110a3, 110a4, 110a5, 110a6, 110a7, 110a8, 210a, 310a, 410a, 510a, 610a, 710a, 810a‧‧‧First slot 120, 120’, 220A, 220B, 220C, 320A, 320B, 320C, 420, 520, 620, 720, 820, 920A, 920B‧‧‧Line structure 122, 122’‧‧‧ arc section 124, 124’‧‧‧Extended section 330‧‧‧chip 440, 640, 940A, 940B‧‧‧Protection layer 440a‧‧‧The third slot 650‧‧‧Supporting structure 810b‧‧‧Second slot 860‧‧‧Connecting line 950‧‧‧via A1‧‧‧First axis A2‧‧‧Second axis L‧‧‧length R1, R2‧‧‧area X, Y, Z‧‧‧direction x, y‧‧‧distance

Fig. 1 is a top view of a circuit board according to an embodiment of the present invention. Fig. 2 is a partial enlarged view of the circuit board of Fig. 1. Fig. 3 is a partial enlarged view of a circuit board according to another embodiment of the present invention. 4 to 8 show circuit boards according to other embodiments of the invention. Fig. 9 is a top view of a circuit board according to another embodiment of the present invention. Fig. 10 is a top view of a circuit board according to another embodiment of the present invention. FIG. 11 is a schematic diagram of splicing multiple circuit boards according to another embodiment of the present invention. Fig. 12 is a top view of a circuit board according to another embodiment of the present invention. Fig. 13 is a cross-sectional view of the circuit board of Fig. 12 along the line I-I. Fig. 14 is a top view of a circuit board according to another embodiment of the present invention. FIG. 15 shows that the distribution range of the first slot and circuit structure of FIG. 14 is reduced. Fig. 16 is a top view of a circuit board according to another embodiment of the present invention. Fig. 17 is a partial enlarged view of the circuit board of Fig. 16. FIG. 18 shows the resistance change rate of a circuit board obtained by tensile testing according to an embodiment of the present invention. FIG. 19 is a schematic diagram of an electronic device according to an embodiment of the invention. Fig. 20 is a partial enlarged view of the circuit board of Fig. 11. Fig. 21 is a cross-sectional view of the circuit board of Fig. 20 along line II-II. Fig. 22 is a cross-sectional view of a circuit board according to another embodiment of the present invention. Fig. 23 is a top view of a partial structure of the circuit board of Fig. 22. Fig. 24 is a bottom view of a partial structure of the circuit board of Fig. 22.

100‧‧‧Circuit board

110‧‧‧Substrate

110a‧‧‧First slot

120‧‧‧Line structure

122‧‧‧Arc Section

124‧‧‧Extended section

A1‧‧‧First axis

X, Y, Z‧‧‧direction

Claims (23)

A circuit board, including: A substrate having a plurality of first slots, wherein each of the first slots extends along a first axis, and the length of each of the first slots along the first axis is greater than the length of each of the first slots along other directions ;as well as At least one circuit structure is disposed on the substrate and includes a plurality of arc-shaped sections and a plurality of extended sections, wherein each of the arc-shaped sections is connected between the two extended sections so that the at least one circuit structure is circuitous There is a gap between the at least one circuit structure and each of the first slots so that part of the surface of each of the first slots and the substrate is exposed by the at least one circuit structure, and each of the first slots is located adjacent to each other. Between the two extension sections, the first axis of each first slot passes through the corresponding arc section. The circuit board according to claim 1, wherein the circuit board is adapted to be stretched in a direction perpendicular to the first axis by deformation of the first grooves and the arc-shaped sections. The circuit board according to item 1 of the scope of patent application, wherein each of the extension sections extends along a straight line. According to the circuit board described in item 1 of the scope of patent application, two adjacent extension sections are parallel to each other or inclined to each other. As for the circuit board described in item 1 of the scope of patent application, each of the first slots is a linear slot, an elliptical slot, a diamond slot, a rectangular slot or a hexagonal slot. For example, the circuit board described in item 1 of the scope of patent application includes a plurality of connection lines, wherein the number of the at least one circuit structure is multiple, and each of the connection lines is connected between two circuit structures so that the circuit structures and These connecting lines together form a circuitous structure. The circuit board according to item 6 of the scope of patent application, wherein the substrate has a plurality of second slots, and each of the second slots is located between two adjacent circuit structures. As for the circuit board described in item 7 of the scope of patent application, each of the second slots extends along a second axis, and the second axis is not parallel to the first axis. The circuit board according to item 8 of the scope of patent application, wherein the circuit board is adapted to be stretched in a direction perpendicular to the second axis by deformation of the second grooves and the connecting lines. For the circuit board described in item 1 of the scope of patent application, wherein the number of the at least one circuit structure is multiple, a part of the first grooves and the corresponding circuit structures are located in a region of the substrate, and the other part of the circuit structures The first grooves and the corresponding circuit structures are located in another area of the substrate, and a design parameter of the first grooves and the circuit structures located in one area is different from the first grooves located in another area. A slot and the design parameters of the circuit structures. For the circuit board described in item 10 of the scope of the patent application, the design parameters include the length of each of the first slots along the first axis and the length between each of two adjacent first slots that are perpendicular or parallel to the The ratio of the distance in the direction of the first axis. The circuit board according to item 10 of the scope of patent application, wherein the design parameter includes the shape of each of the first slots. The circuit board described in item 1 of the scope of patent application includes a chip, wherein the chip is disposed on the substrate and is electrically connected to the at least one circuit structure. The circuit board described in item 1 of the scope of patent application includes a protective layer, wherein the protective layer is disposed on the substrate to shield the at least one circuit structure, and there is a distance between the protective layer and the substrate. The circuit board described in item 14 of the scope of patent application includes a supporting structure, wherein the supporting structure is supported between the substrate and the protective layer to form the spacing. According to the circuit board described in item 1 of the scope of patent application, wherein the number of the at least one circuit structure is multiple, and at least part of the circuit structures are arranged in parallel between two adjacent first slots. For the circuit board described in item 1 of the scope of patent application, the number of the at least one circuit structure is multiple, and some of the circuit structures and the other of the circuit structures are respectively arranged on two opposite surfaces of the substrate. The circuit board described in item 17 of the scope of patent application includes two protective layers, wherein the two protective layers are respectively disposed on the two surfaces of the substrate to shield the circuit structures. For the circuit board described in item 17 of the scope of patent application, some of the circuit structures are electrically connected to the surface where the other circuit structures are located through at least one via hole. An electronic device including: A circuit board, including: A substrate having a plurality of first slots, wherein each of the first slots extends along a first axis, and the length of each of the first slots along the first axis is greater than the length of each of the first slots along other directions ;as well as At least one circuit structure is disposed on the substrate and includes a plurality of arc-shaped sections and a plurality of extended sections, wherein each of the arc-shaped sections is connected between the two extended sections so that the at least one circuit structure is circuitous There is a gap between the at least one circuit structure and each of the first slots so that part of the surface of each of the first slots and the substrate is exposed by the at least one circuit structure, and each of the first slots is located adjacent to each other. Between the two extension sections, the first axis of each first slot passes through the corresponding arc section; and The two electronic components are electrically connected to each other through the circuit board. The electronic device according to claim 20, wherein the circuit board includes a chip, a passive electronic component or an active electronic component, and the chip is disposed on the substrate and electrically connected to the at least one circuit structure. The electronic device according to claim 20, wherein the circuit board includes a protective layer disposed on the substrate to shield the at least one circuit structure, and there is a distance between the protective layer and the substrate. According to the electronic device described in claim 22, the circuit board includes a supporting structure, and the supporting structure is supported between the substrate and the protective layer to form the gap.

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