Flexible circuit board and wireless terminal including the same

Abstract

According to an embodiment, a flexible circuit board includes: a first signal line extending on a first plane; a first dielectric extending along an extending direction of the first signal line in a state of contacting the first signal line; a second signal line extending on a second plane parallel to the first plane; and a second dielectric extending along an extending direction of the second signal line in a state of contacting the second signal line. The first signal line includes a first portion overlapping with the second signal line when viewed in a normal direction of the first plane and a second portion not overlapping with the second signal line, and the second signal line includes a first portion overlapping with the first signal line when viewed in the normal direction and a second portion not overlapping with the first signal line.

Description

Technical Field

[0001] The invention relates to a flexible circuit board and a wireless terminal comprising the same. Background Art

[0002] like Figure 1 As shown, the flexible circuit board 1 is configured so that a portion of the flexible circuit board 1 is in surface contact with the housing 2. In such a configuration, the flexible circuit board 1 can be easily configured in a narrow space inside a wireless terminal (e.g., a smart phone, a tablet computer, a notebook computer, etc.). Here, the flexible circuit board 1 can include a plurality of signal lines used for the purpose of transmitting high-frequency signals between the antenna and the antenna element.

[0003] At this time, the size of the space occupied by the flexible circuit board 1 in the wireless terminal is also related to the configuration relationship of the multiple signal lines. That is, according to the configuration relationship of the multiple signal lines, the space occupied by the flexible circuit board 1 in the wireless terminal may be reduced or increased, thereby, the size of the wireless terminal may also be reduced or increased. In addition, according to the configuration relationship of the multiple signal lines, the radius of curvature of the flexible circuit board 1 may be increased or decreased, thereby, the flexible circuit board 1 may be difficult to fold or easy to fold. Summary of the invention

[0004] The technical subject of the present invention includes proposing a configuration relationship of a plurality of signal lines, and also includes providing a flexible circuit board including a plurality of signal lines configured according to the aforementioned configuration relationship and a wireless terminal including such a flexible circuit board.

[0005] However, the technical subject of the present invention is not limited thereto.

[0006] According to an embodiment, a flexible circuit board includes: a first signal line extending on a first plane; a first dielectric extending along an extending direction of the first signal line in a state of contacting the first signal line; a second signal line extending on a second plane parallel to the first plane; and a second dielectric extending along an extending direction of the second signal line in a state of contacting the second signal line. The first signal line includes a first portion overlapping with the second signal line when viewed in a normal direction of the first plane and a second portion not overlapping with the second signal line, and the second signal line includes a first portion overlapping with the first signal line when viewed in the normal direction and a second portion not overlapping with the first signal line.

[0007] In addition, it may be that the second part of the first signal line includes a 1A bent part connected to the first part of the first signal line and bent on the first plane, a 1A extended part extending in a direction bent from the 1A bent part on the first plane, a 1B bent part formed by bending from the extended 1A extended part on the first plane, and a 1B extended part extending in a direction bent from the 1B bent part on the first plane, and the second part of the second signal line includes a 2A bent part connected to the first part of the second signal line and bent on the second plane, a 2A extended part extending in a direction bent from the 2A bent part on the second plane, a 2B bent part formed by bending from the extended 2A extended part on the second plane, and a 2B extended part extending in a direction bent from the 2B bent part on the second plane.

[0008] In addition, the flexible circuit board may further include: a third signal line extending on a third plane parallel to the second plane; and a third dielectric extending along an extending direction of the third signal line in a state of contact with the third signal line, the third signal line including a first portion overlapping with all of the first signal line and the second signal line when viewed in the normal direction and a second portion not overlapping with any of the first signal line and the second signal line, the second portion of the third signal line including a 3A bent portion connected to the first portion of the third signal line and bent on the third plane, a 3A extending portion extending in a direction bent from the 3A bent portion on the third plane, a 3B bent portion formed by bending from the extended 3A extending portion on the third plane, and a 3B extending portion extending in a direction bent from the 3B bent portion on the third plane.

[0009] In addition, it may be that the length of the 1A extension portion is longer than the length of the 2A extension portion, the distance between the vertical plane of the first portion including the first signal line and the 1B extension portion is farther than the distance between the vertical plane and the 2B extension portion, the length of the 2A extension portion is longer than the length of the 3A extension portion, and the distance between the vertical plane of the first portion including the second signal line and the 2B extension portion is farther than the distance between the vertical plane and the 3B extension portion.

[0010] In addition, it may be that the length of the 1A extension portion is shorter than the length of the 2A extension portion, the distance between the vertical plane of the first portion including the first signal line and the 1B extension portion is closer than the distance between the vertical plane and the 2B extension portion, and the length of the 2A extension portion is shorter than the length of the 3A extension portion, and the distance between the vertical plane of the first portion including the second signal line and the 2B extension portion is closer than the distance between the vertical plane and the 3B extension portion.

[0011] In addition, it may be that, when viewed in the normal direction, a portion of the second dielectric in contact with the 2A extension portion overlaps at least partially with a portion of the first dielectric in contact with the 1A extension portion, but does not overlap with the first signal line, and when viewed in the normal direction, a portion of the third dielectric in contact with the 3A extension portion overlaps at least partially with a portion of the second dielectric in contact with the 2A extension portion, but does not overlap with the second signal line.

[0012] In addition, it may be that, when viewed in the normal direction, a portion of the second dielectric in contact with the 2B extension portion overlaps with at least a portion of the first dielectric in contact with the 1B extension portion, but does not overlap with the first signal line, and when viewed in the normal direction, a portion of the third dielectric in contact with the 3B extension portion overlaps with at least a portion of the second dielectric in contact with the 2B extension portion, but does not overlap with the second signal line.

[0013] In addition, it may be that, when viewed in the normal direction, a portion of the second dielectric in contact with the 2A extension portion overlaps with a portion of the first dielectric in contact with the 1A extension portion in at least a portion, and does not overlap with the first signal line; when viewed in the normal direction, a portion of the second dielectric in contact with the 2B extension portion overlaps with a portion of the first dielectric in contact with the 1B extension portion in at least a portion, and does not overlap with the first signal line; when viewed in the normal direction, a portion of the third dielectric in contact with the 3A extension portion overlaps with a portion of the second dielectric in contact with the 2A extension portion in at least a portion, and does not overlap with the second signal line; when viewed in the normal direction, a portion of the third dielectric in contact with the 3B extension portion overlaps with a portion of the second dielectric in contact with the 2B extension portion in at least a portion, and does not overlap with the second signal line.

[0014] In addition, the flexible circuit board may further include: a first integrated dielectric disposed on a fourth plane parallel to the first plane and between the first dielectric and the second dielectric, and overlapping the first dielectric and the second dielectric when viewed in the normal direction.

[0015] In addition, when viewed in the normal direction, the first integrated dielectric may further include a portion corresponding to a portion that does not overlap with either the first dielectric or the second dielectric between the portion overlapping with the first dielectric and the portion overlapping with the second dielectric.

[0016] In addition, when viewed in the normal direction, the first integrated dielectric may not include a portion corresponding to a portion that does not overlap with either the first dielectric or the second dielectric between a portion overlapping with the first dielectric and a portion overlapping with the second dielectric.

[0017] In addition, the flexible circuit board may further include: a third signal line, including a first portion overlapping with the first signal line and the second signal line when viewed in the normal direction and a second portion not overlapping with either the first signal line or the second signal line when viewed in the normal direction, and extending on a third plane parallel to the second plane; a third dielectric extending along an extension direction of the third signal line while in contact with the third signal line; and a second integrated dielectric placed on a fifth plane parallel to the first plane and between the second dielectric and the third dielectric, and overlapping with the second dielectric and the third dielectric when viewed in the normal direction.

[0018] In addition, when viewed in the normal direction, the second integrated dielectric may further include a portion corresponding to a portion that does not overlap with either the second dielectric or the third dielectric between the portion overlapping with the second dielectric and the portion overlapping with the third dielectric.

[0019] In addition, when viewed in the normal direction, the second integrated dielectric may not include a portion corresponding to a portion that does not overlap with either the second dielectric or the third dielectric between a portion overlapping with the second dielectric and a portion overlapping with the third dielectric.

[0020] In addition, the flexible circuit board may further include: a first welding sheet or a first prepreg material, which is arranged between the first integrated dielectric and the first dielectric or between the first integrated dielectric and the second dielectric, to combine the first integrated dielectric and the first dielectric or to combine the first integrated dielectric and the second dielectric; and a second welding sheet or a second prepreg material, which is arranged between the second integrated dielectric and the second dielectric or between the second integrated dielectric and the third dielectric, to combine the second integrated dielectric and the second dielectric or to combine the second integrated dielectric and the third dielectric.

[0021] In addition, the flexible circuit board may further include: a first shielding portion, which contacts a portion of the first integrated dielectric that overlaps with the second dielectric when viewed in the normal direction; and a second shielding portion, which contacts a portion of the second integrated dielectric that overlaps with the third dielectric when viewed in the normal direction.

[0022] In addition, the flexible circuit board may further include: a first integrated grounding layer, which contacts a portion of the first integrated dielectric that overlaps with the first dielectric when viewed in the normal direction, and has a shape corresponding to the shape of the first dielectric when viewed in the normal direction; and a second integrated grounding layer, which contacts a portion of the second integrated dielectric that overlaps with the second dielectric when viewed in the normal direction, and has a shape corresponding to the shape of the second dielectric when viewed in the normal direction.

[0023] In addition, the first shielding part and the second shielding part respectively include conductive paste or electromagnetic interference (EMI) shielding film.

[0024] In addition, the flexible circuit board may further include: a first integrated grounding layer, which is in contact with the first integrated dielectric and has a shape corresponding to the shape of the first integrated dielectric when viewed in the normal direction; and a second integrated grounding layer, which is in contact with the second integrated dielectric and has a shape corresponding to the shape of the second integrated dielectric when viewed in the normal direction.

[0025] In addition, the flexible circuit board may further include: a first shielding portion, which contacts a portion of the first integrated ground that overlaps with the second dielectric when viewed in the normal direction; and a second shielding portion, which contacts a portion of the second integrated ground that overlaps with the third dielectric when viewed in the normal direction.

[0026] In addition, the first shielding part and the second shielding part may include conductive paste or electromagnetic interference (EMI) shielding film respectively.

[0027] In addition, it may be that the second portion of the first signal line includes a 1A bent portion connected to the first portion of the first signal line and bent on the first plane, and a 1A extended portion extending in a direction bent from the 1A bent portion on the first plane, and the second portion of the second signal line includes a 2A bent portion connected to the first portion of the second signal line and bent on the second plane, and a 2A extended portion extending in a direction bent from the 2A bent portion on the second plane.

[0028] Furthermore, when viewed in the normal direction, a portion of the second dielectric in contact with the 2A extending portion may at least partially overlap with a portion of the first dielectric in contact with the 1A extending portion, but may not overlap with the first signal line.

[0029] In addition, the flexible circuit board may further include: a third signal line extending on a third plane parallel to the second plane; and a third dielectric extending along an extension direction of the third signal line in a state of contact with the third signal line, the third signal line including a first portion overlapping with all of the first signal line and the second signal line when viewed in the normal direction and a second portion not overlapping with either the first signal line or the second signal line, the second portion of the third signal line including a 3A bent portion connected to the first portion of the third signal line and bent on the third plane, and a 3A extending portion extending in a direction bent from the 3A bent portion on the third plane.

[0030] Furthermore, when viewed in the normal direction, a portion of the third dielectric in contact with the 3A extending portion may at least partially overlap with a portion of the second dielectric in contact with the 2A extending portion, but may not overlap with the second signal line.

[0031] In addition, it may be that the second portion of the first signal line includes a 1A bent portion connected to the first portion of the first signal line and bent on the first plane, a 1A extended portion extending in a direction bent from the 1A bent portion on the first plane, a 1B bent portion formed by bending from the extended 1A extended portion on the first plane, and a 1B extended portion extending in a direction bent from the 1B bent portion on the first plane, and the second portion of the second signal line includes a 2B extended portion connected to the first portion of the second signal line and extending on the second plane.

[0032] In addition, the flexible circuit board may further include: a third signal line extending on a third plane parallel to the second plane; and a third dielectric extending along an extending direction of the third signal line in a state of contact with the third signal line, the third signal line including a first portion overlapping with all of the first signal line and the second signal line when viewed in the normal direction and a second portion not overlapping with any of the first signal line and the second signal line, the second portion of the third signal line including a 3A bent portion connected to the first portion of the third signal line and bent on the third plane, a 3A extending portion extending in a direction bent from the 3A bent portion on the third plane, a 3B bent portion formed by bending from the extended 3A extending portion on the third plane, and a 3B extending portion extending in a direction bent from the 3B bent portion on the third plane.

[0033] Furthermore, when viewed in the normal direction, the second portion of the first signal line and the second portion of the third signal line may be symmetrical with respect to the second portion of the second signal line.

[0034] In addition, the length of the 3A extension portion may be longer than that of the 1A extension portion, and the distance between a vertical plane including the first portion of the third signal line and the 3B extension portion may be greater than the distance between the vertical plane and the 1B extension portion.

[0035] In addition, it may be that the flexible circuit board includes two first parts of the first signal line, two second parts of the first signal line, two first parts of the second signal line, and two second parts of the second signal line, the two second parts of the first signal line are symmetrically connected to each other, the two first parts of the first signal line are respectively connected to one end of the second part of the first signal line, the two second parts of the second signal line are symmetrically connected to each other, and the two first parts of the second signal line are respectively connected to one end of the second part of the second signal line.

[0036] A wireless terminal according to an embodiment includes: a first signal line extending on a first plane; a first dielectric extending along an extending direction of the first signal line in a state of contact with the first signal line; a second signal line extending on a second plane parallel to the first plane; and a second dielectric extending along an extending direction of the second signal line in a state of contact with the second signal line, wherein the first signal line includes a first portion overlapping with the second signal line when viewed in a normal direction of the first plane and a second portion not overlapping with the second signal line, the second signal line includes a first portion overlapping with the first signal line when viewed in the normal direction and a second portion not overlapping with the first signal line, and at least a portion of the second portion of the first signal line and at least a portion of the second portion of the second signal line are respectively configured to contact a surface of the wireless terminal that is arranged perpendicular to the first plane.

[0037] According to another embodiment, a wireless terminal includes: a battery; a first signal line extending on a first plane; a first dielectric extending along the extending direction of the first signal line in a state of contact with the first signal line; a second signal line extending on a second plane parallel to the first plane; and a second dielectric extending along the extending direction of the second signal line in a state of contact with the second signal line, wherein the first signal line includes a first portion overlapping with the second signal line when viewed in a normal direction of the first plane and a second portion not overlapping with the second signal line, the second signal line includes a first portion overlapping with the first signal line when viewed in the normal direction and a second portion not overlapping with the first signal line, and at least a portion of the second portion of the first signal line and the second portion of the second signal line are respectively arranged above or below the battery.

[0038] According to one embodiment, when the flexible circuit board includes a plurality of signal lines and a plurality of dielectrics, a portion of the signal lines, i.e., a first portion, and a dielectric in contact with the first portion overlap each other when viewed in a predetermined direction. Therefore, when viewed in a predetermined direction, the space occupied by the aforementioned signal lines and dielectrics in the flexible circuit board can be minimized.

[0039] At the same time, the remaining part of the signal lines, i.e., the second part and the dielectric in contact with such second part, do not overlap with any of them when viewed in a predetermined direction, i.e., the second part and the dielectric in contact with them are arranged to be separated from each other when viewed in a predetermined direction. Therefore, the curvature radius of the second part and the dielectric in contact with them can be reduced, thereby making a part of the flexible circuit board easy to fold. That is, according to one embodiment, a part of the flexible circuit board can be easily folded in order to contact the housing surface inside the wireless terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a diagram for explaining the shape of a flexible printed circuit board arranged in a conventional wireless terminal.

[0041] Figures 2 to 6 This is a diagram according to Example 1.

[0042] Figure 7 Yes Description Figures 2 to 6 Figure 4 is a cross-sectional view of the first part of the diagram.

[0043] Figures 8 to 10 Yes Description Figure 2 FIG. 5 is a cross-section of the second part of the drawing.

[0044] Fig.11 Yes Description Figures 4 to 6 FIG. 5 is a cross-sectional view of the second part of the embodiment of the present invention.

[0045] Fig.12 Yes Description Figures 2 to 6 Figure 4 is a cross-sectional view of the first part of the diagram.

[0046] Fig.13 Yes Description Figure 2 as well as Figure 3 FIG. 5 is a cross-sectional view of the second part of the embodiment of the present invention.

[0047] Fig.14 Yes Description Figures 2 to 6 Figure 4 is a cross-sectional view of the first part of the diagram.

[0048] Figures 15 to 19 Yes Description Figure 2 The stacked diagram.

[0049] Figure 20 to Figure 22 It is a diagram for explaining the shape of a flexible printed circuit board arranged in a wireless terminal.

[0050] Fig.23 as well as Fig.24 This is a diagram according to Example 2.

[0051] Fig.25 as well as Fig.26 This is a diagram according to Example 3.

[0052] Fig. 27 Yes Description Fig.26 FIG. 5 is a cross-section of the second part of the drawing.

[0053] Figure 28 to Figure 31 A diagram illustrating a shape configured in a wireless terminal.

[0054] Fig.32 yes Figures 2 to 6 A three-dimensional view of the flexible circuit board shown. DETAILED DESCRIPTION

[0055] Based on the drawings, the flexible circuit board 1 according to the embodiment of the present invention includes embodiments 1 to 3. Among them, Figures 2 to 6 is a diagram according to Example 1, Fig.23 as well as Fig.24 is a diagram according to Example 2, Fig.25 as well as Fig.26 This is a diagram according to Example 3.

[0056] First, the embodiment 1 is described and compared with Fig.32 Describe together with reference.

[0057] like Figures 2 to 6 as well as Fig.32 As shown, the flexible circuit board 1 according to the first embodiment may include a first dielectric 11 , a second dielectric 12 , a third dielectric 13 , a first signal line 21 , a second signal line 22 , and a third signal line 23 .

[0058] First, the first signal line 21 extends on the first plane 101, the second signal line 22 extends on the second plane 102 parallel to the first plane 101, and the third signal line 23 extends on the third plane 103 parallel to the first plane 101 and the second plane 102. Such signal lines 21 to 23 are structures for transmitting high-frequency signals between the antenna and the antenna element. For example, the flexible circuit board 1 can be electrically connected to the sub-board 4 electrically connected to the antenna and the main board 3 electrically connected to the antenna element to transmit the high-frequency signal between the antenna and the antenna element.

[0059] The first dielectric 11 contacts the first signal line 21 on the upper or lower side, has a width extending around the first signal line 21, and extends along the extension direction of the first signal line 21. Such a dielectric can be formed to include a conventional dielectric material, and the following dielectrics are the same.

[0060] The second dielectric 12 is located below the first dielectric 11 , contacts the second signal line 22 on the upper or lower side, has a width extending around the second signal line 22 , and extends along the extension direction of the second signal line 22 .

[0061] The third dielectric 13 is located below the second dielectric 12 , contacts the third signal line 23 on the upper or lower side, has a width extending around the third signal line 23 , and extends along the extending direction of the third signal line 23 .

[0062] Here, when viewed in the normal direction of the first plane 101 (the "normal direction" in the following detailed description and the claims refers to the normal direction of the first plane 101), the first signal line 21 includes a first portion 100 that completely overlaps with the second signal line 22 and the third signal line 23, and also includes a second portion 200 that does not overlap with either the second signal line 22 or the third signal line 23.

[0063] Furthermore, when viewed in the normal direction, the second signal line 22 includes a first portion 100 that overlaps all of the first signal line 21 and the third signal line 23 , and a second portion 200 that does not overlap any of the first signal line 21 and the third signal line 23 .

[0064] Furthermore, when viewed in the normal direction, the third signal line 23 includes a first portion 100 that completely overlaps the first signal line 21 and the second signal line 22 , and also includes a second portion 200 that does not overlap either the first signal line 21 or the second signal line 22 .

[0065] Here, according to an embodiment, when the flexible circuit board includes a plurality of signal lines and a plurality of dielectrics, a portion of the signal lines, namely the first portion 100, and the dielectric in contact with the first portion 100 overlap each other when viewed in a predetermined direction. Therefore, when viewed in a predetermined direction, the space occupied by the aforementioned signal lines and dielectrics in the flexible circuit board can be minimized.

[0066] At the same time, the remaining portion of these signal lines, namely the second portion 200 and the dielectric in contact with such second portion 200, do not overlap with any of them when viewed in a predetermined direction, that is, these second portions 200 and the dielectric in contact with them are spaced apart from each other when viewed in a predetermined direction. Therefore, the thickness of these second portions 200 and the dielectric in contact with them are spaced apart and dispersed and are smaller than the thickness of the first portion 100 and the dielectric in contact with them, which can reduce the radius of curvature, thereby making a portion of the flexible circuit board easy to fold. That is, according to one embodiment, a portion of the flexible circuit board can be easily folded in order to contact the shell surface inside the wireless terminal. On the other hand, Figures 2 to 6 as well as Fig.32 The embodiment 1 shown in the figure is merely illustrative, and the concept of the present invention is not limited thereto. For example, according to the embodiment, the flexible circuit board 1 may not include the first dielectric 11 and the first signal line 21 and the structure related thereto, or may not include the second dielectric 12 and the second signal line 22 and the structure related thereto, or may not include the third dielectric 13 and the third signal line 23 and the structure related thereto.

[0067] Moreover, within the scope of not departing too much from any of the aforementioned or below-described relationships between the first dielectric 11 and the second dielectric 12, the relationship between the second dielectric 12 and the third dielectric 13, the relationship between the first signal line 21 and the second signal line 22, and the relationship between the second signal line 22 and the third signal line 23, the flexible circuit board 1 may further include dielectrics and signal lines and structures related thereto.

[0068] Obviously, it can be applied to Figures 2 to 6 as well as Fig.32 The first embodiment described above can also be applied to the second and third embodiments to be described below.

[0069] According to an embodiment of the present invention, the first signal line 21 of the flexible circuit board 1, as the second part 200, may include a 1A bent portion 211A connected to the first part 100 of the first signal line 21 and formed by bending on the first plane 101, a 1A extended portion 221A extending in a direction bent from the 1A bent portion 211A on the first plane 101, a 1B bent portion 211B formed by bending from the extended 1A extended portion 221A on the first plane 101, and a 1B extended portion 221B extending in a direction bent from the 1B bent portion 211B on the first plane 101.

[0070] In addition, the second signal line 22 of the flexible circuit board 1, as the second part 200, may include a 2A bent portion 212A connected to the first part 100 of the second signal line 22 and formed by bending on the second plane 102, a 2A extended portion 222A extending in a direction bent from the 2A bent portion 212A on the second plane 102, a 2B bent portion 212B formed by bending from the extended 2A extended portion 222A on the second plane 102, and a 2B extended portion 222B extending in a direction bent from the 2B bent portion 212B on the second plane 102.

[0071] In addition, the third signal line 23 of the flexible circuit board 1 as the second part 200 may include a 3A bent portion 213A connected to the first part 100 of the third signal line 23 and formed by bending on the third plane 103, a 3A extended portion 223A extending in a direction bent from the 3A bent portion 213A on the third plane 103, a 3B bent portion 213B formed by bending from the extended 3A extended portion 223A on the third plane 103, and a 3B extended portion 223B extending in a direction bent from the 3B bent portion 213B on the third plane 103.

[0072] Here, the 1A extension portion 221A, the 2A extension portion 222A, and the 3A extension portion 223A may be configured to be folded or to be in contact with the housing 2. The same may also be applied to the 1B extension portion 221B, the 2B extension portion 222B, and the 3B extension portion 223B.

[0073] On the other hand, according to various embodiments, the relative lengths of the 1A extension portion 221A, the 2A extension portion 222A, and the 3A extension portion 223A included in the flexible circuit board 1 may be different, and the relative lengths of the 1B extension portion 221B, the 2B extension portion 222B, and the 3B extension portion 223B may also be different.

[0074] As an example of different relative lengths, Figure 2 As shown, the length of the 1A extension portion 221A may be longer than the length of the 2A extension portion 222A. Therefore, the vertical plane 104 ( Fig.32 The distance between the plane 104 (which is perpendicular to the first plane 101 shown in FIG. 1 ) and the 1B extension portion 221B is greater than the distance between the perpendicular plane 104 and the 2B extension portion 222B.

[0075] Alternatively, the length of the 2A extension portion 222A may be longer than the length of the 3A extension portion 223A, and the distance between the vertical plane 104 of the first portion 100 including the second signal line 22 and the 2B extension portion 222B may be greater than the distance between the vertical plane 104 and the 3B extension portion 223B.

[0076] As another example of different relative lengths, Figure 3 As shown, the length of the 1A extension portion 221A may be shorter than the length of the 2A extension portion 222A, and the distance between the vertical plane 104 of the first portion 100 of the first signal line 21 and the 1B extension portion 221B may be closer than the distance between the vertical plane 104 and the 2B extension portion 222B.

[0077] Alternatively, the length of the 2A extension portion 222A may be shorter than the length of the 3A extension portion 223A, and the distance between the vertical plane 104 of the first portion 100 including the second signal line 22 and the 2B extension portion 222B may be closer than the distance between the vertical plane 104 and the 3B extension portion 223B.

[0078] In the flexible circuit board 1 according to the embodiment of the present invention, the first dielectric 11, the second dielectric 12 and the third dielectric 13 may be configured to partially overlap each other when viewed in the normal direction, so that when viewed in the normal direction, the space occupied by each dielectric 11 to 13 may be smaller than that of an embodiment where such a space is not occupied.

[0079] As an example, the dielectrics 11 to 13 are arranged so as to partially overlap each other. Figure 4 As shown, when viewed in the normal direction, the portion of the second dielectric 12 in contact with the 2A extension portion 222A at least partially overlaps with the portion of the first dielectric 11 in contact with the 1A extension portion 221A, but does not overlap with the first signal line 21 .

[0080] Alternatively, when viewed in the normal direction, a portion of the third dielectric 13 in contact with the 3A extending portion 223A may at least partially overlap with a portion of the second dielectric 12 in contact with the 2A extending portion 222A, but may not overlap with the second signal line 22 .

[0081] That is, the length between the first signal line 21 of the 1A extension portion 221A and the second signal line 22 of the 2A extension portion 222A may be formed to be shorter than the length between the first signal line 21 of the 1B extension portion 221B and the second dielectric 12 of the 2B extension portion 222B. In addition, the length between the second signal line 22 of the 2A extension portion 222A and the third signal line 23 of the 3A extension portion 223A may be formed to be shorter than the length between the second signal line 22 of the 2B extension portion 222B and the third dielectric 13 of the 3B extension portion 223B.

[0082] In this way, if the second dielectric 12 of the 2A extension portion 222A is configured to overlap with the first dielectric 11 of the 1A extension portion 221A in the normal direction at least in part, and the third dielectric 13 of the 3A extension portion 223A is configured to overlap with the second dielectric 12 of the 2A extension portion 222A in the normal direction at least in part, the width of the overlapping portion is narrowed.

[0083] Therefore, when viewed in the normal direction, the space occupied by each dielectric 11 to 13 becomes smaller than that of an embodiment in which the dielectric 11 to 13 is not such, thereby having an effect that is beneficial for configuration in a case where the space for configuring the flexible circuit board 1 is narrow (for example, a case where components are configured around the configured space, resulting in a narrower space for configuring the flexible circuit board 1).

[0084] As another example, the dielectrics 11 to 13 are arranged so as to partially overlap each other. Figure 5 As shown, when viewed in the normal direction, the portion of the second dielectric 12 in contact with the 2B extension portion 222B may overlap with the portion of the first dielectric 11 in contact with the 1B extension portion 221B in at least a portion, but may not overlap with the first signal line 21. In addition, when viewed in the normal direction, the portion of the third dielectric 13 in contact with the 3B extension portion 223B may overlap with the portion of the second dielectric 12 in contact with the 2B extension portion 222B in at least a portion, but may not overlap with the second signal line 22.

[0085] That is, the length between the first signal line 21 of the 1A extension portion 221A and the second signal line 22 of the 2A extension portion 222A may be formed longer than the length between the first signal line 21 of the 1B extension portion 221B and the second dielectric 12 of the 2B extension portion 222B. In addition, the length between the second signal line 22 of the 2A extension portion 222A and the third signal line 23 of the 3A extension portion 223A may be formed longer than the length between the second signal line 22 of the 2B extension portion 222B and the third dielectric 13 of the 3B extension portion 223B.

[0086] In this way, if the second dielectric 12 of the 2B extension portion 222B is configured to overlap at least a portion of the first dielectric 11 of the 1B extension portion 221B in the normal direction, and the third dielectric 13 of the 3B extension portion 223B is configured to overlap at least a portion of the second dielectric 12 of the 2B extension portion 222B in the normal direction, the width of the overlapping portion is narrowed.

[0087] Therefore, when viewed in the normal direction, the space occupied by each dielectric 11 to 13 becomes smaller than that of an embodiment in which the flexible circuit board 1 is not such, so that the flexible circuit board 1 has an effect that is conducive to configuration when the space for configuring the flexible circuit board 1 is narrow (for example, when components are configured around the configured space so that the space for configuring the flexible circuit board 1 becomes narrower).

[0088] As another example, the dielectrics 11 to 13 are arranged so as to partially overlap each other. Figure 6 As shown, when viewed in the normal direction, the portion of the second dielectric 12 in contact with the 2A extension portion 222A overlaps with at least a portion of the portion of the first dielectric 11 in contact with the 1A extension portion 221A, and does not overlap with the first signal line 21; at the same time, when viewed in the normal direction, the portion of the second dielectric 12 in contact with the 2B extension portion 222B overlaps with at least a portion of the portion of the first dielectric 11 in contact with the 1B extension portion 221B, and does not overlap with the first signal line 21.

[0089] In addition, it may be that, when viewed in the normal direction, a portion of the third dielectric 13 in contact with the 3A extension portion 223A overlaps with at least a portion of the second dielectric 12 in contact with the 2A extension portion 222A, and does not overlap with the second signal line 22; and at the same time, when viewed in the normal direction, a portion of the third dielectric 13 in contact with the 3B extension portion 223B overlaps with at least a portion of the second dielectric 12 in contact with the 2B extension portion 222B, and does not overlap with the second signal line 22.

[0090] In this way, if the second dielectric 12 of the 2A extension portion 222A is configured so that at least a portion overlaps with the first dielectric 11 of the 1A extension portion 221A in the normal direction, the third dielectric 13 of the 3A extension portion 223A is configured so that at least a portion overlaps with the second dielectric 12 of the 2A extension portion 222A in the normal direction, the second dielectric 12 of the 2B extension portion 222B is configured so that at least a portion overlaps with the first dielectric 11 of the 1B extension portion 221B in the normal direction, and the third dielectric 13 of the 3B extension portion 223B is configured so that at least a portion overlaps with the second dielectric 12 of the 2B extension portion 222B in the normal direction, the width of the overlapping portion is narrowed.

[0091] Therefore, when viewed in the normal direction, the space occupied by each dielectric 11 to 13 becomes smaller than that of an embodiment other than that, thereby having an effect that is beneficial for configuration in a case where the space for configuring the flexible circuit board 1 is narrow (for example, a case where components are configured around the configured space so that the space for configuring the flexible circuit board 1 becomes narrower).

[0092] Figure 7 , Fig.12 as well as Fig.14 Yes Description Figures 2 to 6 FIG. 1 is a diagram showing a cross section of a first portion 100 of each of the signal lines 21 to 23 .

[0093] in addition, Figure 7 , Fig.12 as well as Fig.14 1 and 2 are diagrams for explaining cross sections of various embodiments of surfaces with which the first signal line 21 , the second signal line 22 , and the third signal line 23 are in contact.

[0094] in, Figure 7 1 is a diagram illustrating a cross section of an embodiment in which the first signal line 21 , the second signal line 22 , and the third signal line 23 are all in contact with each other.

[0095] in addition, Fig.12 1 is a diagram illustrating a cross section of an embodiment in which the first signal line 21 is in contact with the upper surface, and the second signal line 22 and the third signal line 23 are in contact with the lower surface.

[0096] in addition, Fig.14 This is a diagram illustrating a cross section of an embodiment in which the first signal line 21 and the second signal line 22 are in contact with the upper surface, and the third signal line 23 is in contact with the lower surface.

[0097] Figures 8 to 10 as well as Fig.13 Yes Description Figure 2 FIG. 2 is a diagram showing a cross section of a second portion 200 of each of the signal lines 21 to 23 .

[0098] Fig.11 Yes Description Figures 4 to 6 FIG. 2 is a diagram showing a cross section of a second portion 200 of each of the signal lines 21 to 23 .

[0099] like Figures 7 to 14 As shown, the flexible circuit board 1 according to the embodiment of the present invention may further include any one or more of a first integrated dielectric 31 and a second integrated dielectric 32 .

[0100] The first integrated dielectric 31 is located between the first dielectric 11 and the second dielectric 12. For example, the first integrated dielectric 31 may be located on a fourth plane (not shown in the drawings) parallel to the first plane 101 and located between the first dielectric 11 and the second dielectric 12.

[0101] The second integrated dielectric 32 is located below the second dielectric 12 and above the third dielectric 13. For example, the second integrated dielectric 32 may be located on a fifth plane (not shown in the drawings) parallel to the first plane 101 and located between the second dielectric 12 and the third dielectric 13.

[0102] Here, when viewed in the normal direction, the first integrated dielectric 31 and the second integrated dielectric 32 may each overlap at least a portion of the first dielectric 11 , the second dielectric 12 , and the third dielectric 13 .

[0103] In this way, for the first example of the integrated dielectrics 31 and 32 overlapping the dielectrics 11 to 13, reference will be made to Figure 8 Described more specifically. When viewed in the normal direction, the first integrated dielectric 31 may include a portion overlapping with the first dielectric 11 and a portion overlapping with the second dielectric 12. In addition, when viewed in the normal direction, the first integrated dielectric 31 may be configured to exclude a portion corresponding to a portion that does not overlap with either the first dielectric 11 or the second dielectric 12 between the portion overlapping with the first dielectric 11 and the portion overlapping with the second dielectric 12.

[0104] In addition, when viewed in the normal direction, the second integrated dielectric 32 may include a portion overlapping with the second dielectric 12 and a portion overlapping with the third dielectric 13. In addition, when viewed in the normal direction, the second integrated dielectric 32 may be configured to exclude a portion corresponding to a portion that does not overlap with either the second dielectric 12 or the third dielectric 13 between the portion overlapping with the second dielectric 12 and the portion overlapping with the third dielectric 13.

[0105] In contrast, for the second example in which the integrated dielectrics 31 and 32 overlap with the respective dielectrics 11 to 13, reference will be made to Fig. 9 Described more specifically. When viewed in the normal direction, the first integrated dielectric 31 may include a portion overlapping with the first dielectric 11 and a portion overlapping with the second dielectric 12. In addition, when viewed in the normal direction, the first integrated dielectric 31 may also be configured to further include a portion corresponding to a portion that does not overlap with either the first dielectric 11 or the second dielectric 12 between the portion overlapping with the first dielectric 11 and the portion overlapping with the second dielectric 12.

[0106] In addition, when viewed in the normal direction, the second integrated dielectric 32 may include a portion overlapping with the second dielectric 12 and a portion overlapping with the third dielectric 13. In addition, when viewed in the normal direction, the second integrated dielectric 32 may also be configured to further include a portion corresponding to a portion that does not overlap with either the second dielectric 12 or the third dielectric 13 between the portion overlapping with the second dielectric 12 and the portion overlapping with the third dielectric 13. In each of the two examples (the first example and the second example) described above, the upper side of the first integrated dielectric 31 may be configured to overlap with the first dielectric 11 when viewed in the normal direction, and the lower other side of the first integrated dielectric 31 may be configured to overlap with the second dielectric 12 when viewed in the normal direction.

[0107] In this way, when the first integrated dielectric 31 is arranged between the first dielectric 11 and the second dielectric 12, and the second integrated dielectric 32 is arranged between the second dielectric 12 and the third dielectric 13 so that a portion of the flexible circuit board 1 is folded, the first integrated dielectric 31 can prevent the first dielectric 11 and the second dielectric 12 from being damaged by direct friction with each other, and the second integrated dielectric 32 can prevent the second dielectric 12 and the third dielectric 13 from being damaged by direct friction with each other.

[0108] like Figures 7 to 14 As shown, the flexible circuit board 1 according to the embodiment of the present invention may include the following features.

[0109] The first integrated dielectric 31 may be directly hot-melt-bonded to the first dielectric 11 and the second dielectric 12 , or may be bonded to the first dielectric 11 and the second dielectric 12 through the medium of a welding sheet 50 or a prepreg material 50 .

[0110] The second integrated dielectric 32 can be directly hot-melt-bonded with the second dielectric 12 and the third dielectric 13 , or can be combined with the second dielectric 12 and the third dielectric 13 through the medium of a welding sheet 50 and a prepreg material 50 .

[0111] In this way, when the second portion 200 of each signal line 21 to 23 is folded, the first dielectric 11 and the second dielectric 12 are folded in a state of being combined with the first integrated dielectric 31, and the second dielectric 12 and the third dielectric 13 are folded in a state of being combined with the second integrated dielectric 32, these components are not folded individually. In other words, these components can be folded together with the first integrated dielectric 31 and the second integrated dielectric 32 as a reference.

[0112] like Figures 7 to 14 As shown, the flexible circuit board 1 according to the embodiment of the present invention may further include a first integrated ground 41 and a second integrated ground 42 .

[0113] The first integrated ground 41 is in contact with the upper surface or the lower surface of the first integrated dielectric 31 .

[0114] The second integrated ground 42 is in contact with the upper or lower surface of the second integrated dielectric 32 .

[0115] The first integrated ground 41 is arranged to partially overlap the first dielectric 11 and the second dielectric 12 in the normal direction. That is, the first integrated ground 41 may be in contact with a portion of the first integrated dielectric 31 that overlaps with the first dielectric 11 when viewed in the normal direction, and may have a shape corresponding to the shape of the first integrated dielectric 31 when viewed in the normal direction.

[0116] The second integrated ground 42 is arranged to partially overlap the second dielectric 12 and the third dielectric 13 in the normal direction. That is, the second integrated ground 42 may be in contact with a portion of the second integrated dielectric 32 that overlaps with the second dielectric 12 when viewed in the normal direction, and may have a shape corresponding to the shape of the second integrated dielectric 32 when viewed in the normal direction.

[0117] Here, each of the integrated grounds 41 and 42 may be constituted by the following various embodiments.

[0118] For example, refer to Fig. 9 To describe more specifically, when viewed in the normal direction, the first integrated ground 41 may include a portion overlapping with the first dielectric 11 and a portion overlapping with the second dielectric 12. In addition, when viewed in the normal direction, the first integrated ground 41 may be configured to further include a portion corresponding to a portion that does not overlap with either the first dielectric 11 or the second dielectric 12 between the portion overlapping with the first dielectric 11 and the portion overlapping with the second dielectric 12.

[0119] In addition, when viewed in the normal direction, the second integrated ground 42 may include a portion overlapping with the second dielectric 12 and a portion overlapping with the third dielectric 13. In addition, when viewed in the normal direction, the second integrated ground 42 may be configured to further include a portion corresponding to a portion that does not overlap with either the second dielectric 12 or the third dielectric 13 between the portion overlapping with the second dielectric 12 and the portion overlapping with the third dielectric 13.

[0120] In contrast, refer to Fig.10To describe more specifically, when viewed in the normal direction, the first integrated ground 41 may include a portion overlapping with the first dielectric 11 and a portion overlapping with the second dielectric 12. In addition, when viewed in the normal direction, the first integrated ground 41 may be configured to exclude a portion corresponding to a portion that does not overlap with either the first dielectric 11 or the second dielectric 12 between the portion overlapping with the first dielectric 11 and the portion overlapping with the second dielectric 12.

[0121] In addition, when viewed in the normal direction, the second integrated ground 42 may include a portion overlapping with the second dielectric 12 and a portion overlapping with the third dielectric 13. In addition, when viewed in the normal direction, the second integrated ground 42 may also be configured to exclude a portion corresponding to a portion that does not overlap with either the first dielectric 11 or the second dielectric 12 between the portion overlapping with the first dielectric 11 and the portion overlapping with the second dielectric 12.

[0122] like Figures 8 to 10 as well as Fig.13 As shown, the flexible circuit board 1 according to the embodiment of the present invention further includes a first shielding portion 81 and a second shielding portion 82 .

[0123] Such first shielding portion 81 and second shielding portion 82 may be respectively implemented to include conductive paste or an electromagnetic interference shielding film.

[0124] Meanwhile, such first shielding portion 81 and second shielding portion 82 may be applied in various embodiments.

[0125] As applicable embodiments of the first shielding portion 81 and the second shielding portion 82, Figure 8 as well as Fig.10 As shown, the first shielding portion 81 may replace a portion of the first integrated ground 41 that overlaps with the second dielectric 12 in the normal direction, and the second shielding portion 82 may replace a portion of the second integrated ground 42 that overlaps with the third dielectric 13 in the normal direction.

[0126] In contrast, Fig.13 As shown, the first shielding portion 81 may replace a portion of the first integrated ground 41 that overlaps with the second dielectric 12 in the normal direction, and the second shielding portion 82 may replace a portion of the second integrated ground 42 that overlaps with the second dielectric 12 in the normal direction.

[0127] Alternatively, as another applicable embodiment of the first shielding portion 81 and the second shielding portion 82, as Fig. 9As shown, the first shielding portion 81 may be in contact with a portion of the first integrated ground 41 that overlaps with the second dielectric 12 in the normal direction, and the second shielding portion 82 may be in contact with a portion of the second integrated ground 42 that overlaps with the third dielectric 13 in the normal direction.

[0128] like Figures 7 to 14 As shown, the flexible circuit board 1 according to the embodiment of the present invention includes a fourth dielectric 14 , a fifth dielectric 15 , an outer side ground 60 and a side ground 70 .

[0129] The fourth dielectric 14 is located above the first dielectric 11 and is in contact with an external ground 60 on the upper side or the lower side.

[0130] At this time, the fourth dielectric 14 may be directly hot-melt-bonded to the first dielectric 11 , or may be bonded to the first dielectric 11 via either a soldering sheet 50 or a prepreg material 50 .

[0131] The fifth dielectric 15 is located below the second dielectric 12 and is in contact with an outer ground 60 on the upper side or the lower side.

[0132] At this time, the fifth dielectric 15 may be directly hot-melt-bonded to the second dielectric 12 , or may be bonded to the second dielectric 12 via either a soldering sheet 50 or a prepreg material 50 .

[0133] That is, in the normal direction, the first dielectric 11 , the second dielectric 12 , and the third dielectric 13 may be arranged between the fourth dielectric 14 and the fifth dielectric 15 .

[0134] The side grounds 70 may be in contact with the same surface as the surface where the first signal line 21 is in contact with the first dielectric 11 , and may be arranged spaced apart on both sides with the first signal line 21 as the center.

[0135] The side grounds 70 are in contact with the same surface as the surface where the second signal line 22 is in contact with the second dielectric 12 , and are arranged spaced apart on both sides with the second signal line 22 as the center.

[0136] The side grounds 70 are in contact with the same surface as the surface where the third signal line 23 is in contact with the third dielectric 13 , and are arranged spaced apart on both sides with the third signal line 23 as the center.

[0137] At this time, if Fig.11 As shown, when the first dielectric 11 and the second dielectric 12 overlap in the normal direction, the side of the side grounding 70 in contact with the first dielectric 11 may overlap with the side of the side grounding 70 in contact with the second dielectric 12 in the normal direction.

[0138] In addition, when the second dielectric 12 and the third dielectric 13 overlap in the normal direction, the side ground 70 in contact with the second dielectric 12 may overlap with the side ground 70 in contact with the third dielectric 13 in the normal direction.

[0139] Figures 15 to 19 Yes Description Figure 2 The stacked diagram.

[0140] like Figures 15 to 19 As shown, the flexible circuit board 1 according to the embodiment of the present invention can be stacked in the following order.

[0141] First, if Fig.15 As shown, the first dielectric 11 in contact with the first signal line 21 is stacked on or below.

[0142] Afterwards, if Fig.16 As shown, the first integrated dielectric 31 is stacked. At this time, the first dielectric 11 can be arranged to be close to the left side or the right side below the first integrated dielectric 31.

[0143] Afterwards, if Fig.17 As shown, the second dielectric 12 in contact with the second signal line 22 is stacked on or below. At this time, the second dielectric 12 can be arranged to be close to the left or right side of the upper part of the first integrated dielectric 31.

[0144] Afterwards, if Fig.18 As shown, the second integrated dielectric 32 is stacked. At this time, the second dielectric 12 can be arranged to be close to the left side or the right side below the second integrated dielectric 32.

[0145] Afterwards, if Fig.19 As shown, the third dielectric 13 in contact with the third signal line 23 is stacked on or below. At this time, the third dielectric 13 can be arranged to be close to the left or right side of the second integrated dielectric 32.

[0146] The stack described above is Figure 2 This is described as a reference, but other drawings can also be stacked in this way.

[0147] Figure 20 to Figure 22 It is a diagram for explaining the shape of a flexible printed circuit board arranged in a wireless terminal.

[0148] like Fig. 20 as well as Fig.21 As shown, the flexible circuit board 1 according to the embodiment of the present invention includes the following features.

[0149] The flexible circuit board 1 may include two first portions 100 and two second portions 200 of the first signal line 21, two first portions 100 and two second portions 200 of the second signal line 22, and two first portions 100 and two second portions 200 of the third signal line 23. At the same time, the dielectrics 11 to 13 may be arranged in contact with each other along the first portions 100 and the second portions 200.

[0150] In this case, the two second portions 200 of the first signal line 21 may be symmetrically connected to each other, and the two first portions 100 of the first signal line 21 may be respectively connected to one end of the second portion 200 of the first signal line 21. In addition, the two second portions 200 of the second signal line 22 may be symmetrically connected to each other, and the two first portions 100 of the second signal line 22 may be respectively connected to one end of the second portion 200 of the second signal line 22. The same is true for the third signal line 23 and the third dielectric 13.

[0151] At this time, the second portions 200 of the signal lines 21 to 23 may be symmetrical to each other, for example, Fig. 20 A linearly symmetrical shape such as shown or Fig.21 A point-symmetrical shape as shown.

[0152] like Fig. 22 As shown, the flexible circuit board 1 according to the embodiment of the present invention can be configured inside a wireless terminal, and in this case includes the following features.

[0153] The signal lines 21 to 23 and the dielectrics 11 to 13 in contact with the signal lines 21 to 23 may be arranged in contact with a surface of the wireless terminal that is arranged perpendicular to the first plane 101. For this purpose, a portion of the second portion 200 of each signal line 21 to 23 and a portion of each dielectric 11 to 13 may include a portion folded in a direction perpendicular to the first plane 101.

[0154] Obviously, it can be applied to Figures 7 to 22 The first embodiment described above can also be applied to the second and third embodiments to be described below.

[0155] Fig.23 as well as Fig.24 This is a diagram according to Example 2.

[0156] Next, Example 2 will be described.

[0157] like Fig.23 as well as Fig.24 As shown, the flexible circuit board 1 according to the embodiment of the present invention may include a first dielectric 11 , a second dielectric 12 , a third dielectric 13 , a first signal line 21 , a second signal line 22 , and a third signal line 23 .

[0158] According to an embodiment of the present invention, the first signal line 21 of the flexible circuit board 1 as the second part 200 may include a 1A bent portion 211A connected to the first part 100 of the first signal line 21 and formed by bending on the first plane 101, and a 1A extending portion 221A extending in a direction bent from the 1A bent portion 211A on the first plane 101.

[0159] In addition, the second signal line 22 of the flexible circuit board 1 may serve as the second part 200 and may include a 2A bent portion 212A connected to the first part 100 of the second signal line 22 and bent on the second plane 102 and a 2A extending portion 222A extending in the direction bent from the 2A bent portion 212A on the second plane 102.

[0160] In addition, the third signal line 23 of the flexible circuit board 1 as the second part 200 may include a 3A bent portion 213A connected to the first part 100 of the third signal line 23 and bent on the third plane 103, and a 3A extending portion 223A extending in the direction bent from the 3A bent portion 213A on the third plane 103.

[0161] At this time, the angle of each of the 1A curved portion 211A, the 2A curved portion 212A, and the 3A curved portion 213A on each plane may be within a range of 30 to 120 degrees, for example, 90 degrees, but not limited thereto. The same is true for the 1B curved portion 211B, the 2B curved portion 212B, and the 3B curved portion 213B.

[0162] In addition, the 1A extension portion 221A, the 2A extension portion 222A, and the 3A extension portion 223A may be configured to be folded or to be in contact with the housing 2 .

[0163] In the flexible circuit board 1 according to an embodiment of the present invention, when viewed in the normal direction, the first dielectric 11, the second dielectric 12 and the third dielectric 13 can be configured to overlap partially, whereby, when viewed in the normal direction, the space occupied by each dielectric 11 to 13 can be smaller than that of an embodiment where such space is not occupied.

[0164] As an example, the dielectrics 11 to 13 are arranged so as to partially overlap each other. Fig.24That is, when viewed in the normal direction, the portion of the second dielectric 12 in contact with the 2A extension portion 222A may overlap with the portion of the first dielectric 11 in contact with the 1A extension portion 221A, but may not overlap with the first signal line 21. In addition, when viewed in the normal direction, the portion of the third dielectric 13 in contact with the 3A extension portion 223A may overlap with the portion of the first dielectric 11 in contact with the 2A extension portion 222A, but may not overlap with the second signal line 22.

[0165] In this way, if the second dielectric 12 of the 2A extension portion 222A is configured to overlap with the first dielectric 11 of the 1A extension portion 221A in the normal direction at least in part, and the third dielectric 13 of the 3A extension portion 223A is configured to overlap with the second dielectric 12 of the 2A extension portion 222A in the normal direction at least in part, the width of the overlapping portion is narrowed.

[0166] Therefore, when viewed in the normal direction, the space occupied by each dielectric 11 to 13 becomes smaller than that of an embodiment in which the dielectric 11 to 13 is not such, thereby having an effect that is beneficial for configuration in a case where the space for configuring the flexible circuit board 1 is narrow (for example, a case where components are configured around the configured space, resulting in a narrower space for configuring the flexible circuit board 1).

[0167] Fig.25 as well as Fig.26 This is a diagram according to Example 3.

[0168] Next, Example 3 will be described.

[0169] like Fig.25 as well as Fig.26 As shown, the flexible circuit board 1 according to the embodiment of the present invention may include a first dielectric 11 , a second dielectric 12 , a third dielectric 13 , a first signal line 21 , a second signal line 22 , and a third signal line 23 .

[0170] According to an embodiment of the present invention, the first signal line 21 of the flexible circuit board 1 as the second part 200 may include a 1A bent portion 211A connected to the first part 100 of the first signal line 21 and formed by bending on the first plane 101, a 1A extended portion 221A extending in a direction bent from the 1A bent portion 211A on the first plane 101, a 1B bent portion 211B formed by bending from the extended 1A extended portion 221A on the first plane 101, and a 1B extended portion 221B extending in a direction bent from the 1B bent portion 211B on the first plane 101.

[0171] In addition, the second signal line 22 of the flexible printed circuit board 1 may serve as the second portion 200 and may include a 2B extending portion 222B connected to the first portion 100 of the second signal line 22 and extending on the second plane 102 .

[0172] In addition, the third signal line 23 of the flexible circuit board 1 as the second part 200 may include a 3A bent portion 213A connected to the first part 100 of the third signal line 23 and formed by bending on the third plane 103, a 3A extended portion 223A extending in a direction bent from the 3A bent portion 213A on the third plane 103, a 3B bent portion 213B formed by bending from the extended 3A extended portion 223A on the third plane 103, and a 3B extended portion 223B extending in a direction bent from the 3B bent portion 213B on the third plane 103.

[0173] At this time, the bending angle of the 1A curved portion 211A and the 3A curved portion 213A can be within a range of 30 to 120 degrees, such as 90 degrees, but not limited thereto. The same may also apply to the 1B curved portion 211B and the 3B curved portion 213B.

[0174] In addition, the 1B extending portion 221B, the 2B extending portion 222B, and the 3B extending portion 223B may be configured to be folded or to be in contact with the housing 2 .

[0175] In addition, in addition to the 1A extension portion 221A, the 1B bent portion 211B may extend directly from the 1A bent portion 211A, and in addition to the 3A extension portion 223A, the 3B bent portion 213B may extend directly from the 3A bent portion 213A.

[0176] like Fig.25 As shown, the flexible circuit board 1 according to the embodiment of the present invention includes the following features.

[0177] The second portion 200 of the third signal line 23 may be symmetrical to the second portion 200 of the first signal line 21 with the second portion 200 of the second signal line 22 as the center, and also symmetrical with respect to the bent portion.

[0178] like Fig.26 As shown, the flexible circuit board 1 according to the embodiment of the present invention is different from the flexible circuit board 1 described above. Fig.25 Only the third dielectric 13 portion is different and the other structures are formed in the same manner, so that other shapes can be provided. Therefore, the unexplained parts will be referred to. Fig.25 .

[0179] As such with Fig.25In an embodiment of different shapes, the third dielectric 13 may be located above the first dielectric 11 and contact the third signal line 23 above or below, and have a width extending around the third signal line 23 and extending along the extension direction of the third signal line 23 .

[0180] At this time, the length of the 3A extension portion 223A may be longer than the length of the 1A extension portion 221A, and the distance between the vertical plane 104 of the first portion 100 including the third signal line 23 and the 3B extension portion 223B may be greater than the distance between the vertical plane 104 and the 1B extension portion 221B.

[0181] Right now, Fig.25 The first signal line 21 and the third signal line 23 are symmetrically arranged with the second signal line 22 as the center. Fig.26 The first signal line 21 and the third signal line 23 are arranged close to one side with the second signal line 22 as the center.

[0182] Fig. 27 Yes Description Fig.26 FIG. 1 is a diagram showing a partial cross section of the flexible circuit board 1 .

[0183] like Fig. 27 As shown, the flexible circuit board 1 according to the embodiment of the present invention may further include at least one of a first integrated dielectric 31 and a second integrated dielectric 32 .

[0184] The first integrated dielectric 31 is located between the lower portion of the first dielectric 11 and the upper portion of the second dielectric 12 .

[0185] The second integrated dielectric 32 is located between the upper portion of the first dielectric 11 and the lower portion of the third dielectric 13 .

[0186] Figure 28 to Figure 31 It is a diagram for explaining the shape of the flexible printed circuit 1 arranged in the wireless terminal.

[0187] The flexible circuit board 1 according to the embodiment of the present invention can be configured in a wireless terminal. At this time, at least a portion of the second portion 200 of the first signal line 21, the second portion 200 of the second signal line 22, and the second portion 200 of the third signal line 23 can be respectively as follows: Figures 28 to 31 As shown, it is arranged above or below the battery 5.

[0188] To describe it more specifically, Fig.28 as well as Fig.29 As shown, the 1B extension portion 221B, the 2B extension portion 222B and the 3B extension portion 223B may be disposed inside the wireless terminal so as to pass under the battery 5 .

[0189] at this time, Fig.28 This is a diagram showing the arrangement of the 1B extension portion 221B, the 2B extension portion 222B, and the 3B extension portion 223B as viewed from the front. Fig.29 This is a diagram showing the arrangement of the 1B extending portion 221B, the 2B extending portion 222B, and the 3B extending portion 223B as viewed from the side.

[0190] In contrast, Fig.30 as well as Fig.31 As shown, the 1B extension portion 221B, the 2B extension portion 222B and the 3B extension portion 223B may also be arranged inside the wireless terminal so as to pass over the battery 5. In this case, Fig.30 This is a diagram showing the arrangement of the 1B extension portion 221B, the 2B extension portion 222B, and the 3B extension portion 223B as viewed from the front. Fig.31 This is a cross-sectional view of the arrangement of the 1B extending portion 221B, the 2B extending portion 222B, and the 3B extending portion 223B as viewed from the side.

[0191] As described above, according to an embodiment, when the flexible circuit board includes a plurality of signal lines and a plurality of dielectrics, a portion of the signal lines, namely the first portion 100, and the dielectric in contact with the first portion 100 overlap each other when viewed in a predetermined direction. Therefore, when viewed in a predetermined direction, the space occupied by the aforementioned signal lines and dielectrics in the flexible circuit board can be minimized.

[0192] At the same time, the remaining parts of the signal lines, i.e., the second parts 200 and the dielectric in contact with such second parts 200, do not overlap with any of them when viewed in a predetermined direction, i.e., the second parts 200 and the dielectric in contact with them are arranged to be spaced apart from each other when viewed in a predetermined direction. Therefore, the curvature radius of the second parts 200 and the dielectric in contact with them can be reduced, thereby making it easy to fold a part of the flexible circuit board.

Claims

1. A flexible circuit board, comprising: A first signal line extending on a first plane; a first dielectric extending along an extending direction of the first signal line in a state of being in contact with the first signal line; a second signal line extending on a second plane parallel to the first plane; a second dielectric extending along an extending direction of the second signal line in a state of being in contact with the second signal line; a third signal line extending on a third plane parallel to the second plane; as well as a third dielectric extending along an extending direction of the third signal line in a state of being in contact with the third signal line, The first signal line includes a first portion overlapping with the second signal line when viewed in a normal direction of the first plane and a second portion not overlapping with the second signal line. The second signal line includes a first portion overlapping with the first signal line and a second portion not overlapping with the first signal line when viewed in the normal direction. The third signal line includes a first portion that overlaps all of the first signal line and the second signal line when viewed in the normal direction, and a second portion that does not overlap any of the first signal line and the second signal line. The second portion of the first signal line includes a 1A bent portion connected to the first portion of the first signal line and bent on the first plane, a 1A extended portion extending in a direction bent from the 1A bent portion on the first plane, a 1B bent portion bent from the extended 1A extended portion on the first plane, and a 1B extended portion extending in a direction bent from the 1B bent portion on the first plane. The second portion of the second signal line includes a 2A bent portion connected to the first portion of the second signal line and bent on the second plane, a 2A extended portion extending in a direction bent from the 2A bent portion on the second plane, a 2B bent portion bent from the extended 2A extended portion on the second plane, and a 2B extended portion extending in a direction bent from the 2B bent portion on the second plane. The second portion of the third signal line includes a 3A bent portion connected to the first portion of the third signal line and bent on the third plane, a 3A extended portion extending in a direction toward which the 3A bent portion is bent on the third plane, a 3B bent portion bent from the extended 3A extended portion on the third plane, and a 3B extended portion extending in a direction toward which the 3B bent portion is bent on the third plane. The relative lengths of the 1A extending portion, the 2A extending portion, and the 3A extending portion are different from each other.

2. The flexible circuit board according to claim 1, wherein: The length of the 1A extension portion is longer than the length of the 2A extension portion, A distance between a vertical plane including the first portion of the first signal line and the 1B extension portion is greater than a distance between the vertical plane and the 2B extension portion, The length of the 2A extension portion is longer than the length of the 3A extension portion, A distance between a vertical plane including the first portion of the second signal line and the 2B extending portion is greater than a distance between the vertical plane and the 3B extending portion.

3. The flexible circuit board according to claim 1, wherein: The length of the 1A extension portion is shorter than the length of the 2A extension portion, A distance between a vertical plane including the first portion of the first signal line and the 1B extension portion is closer than a distance between the vertical plane and the 2B extension portion, The length of the 2A extension portion is shorter than the length of the 3A extension portion, A distance between a vertical plane including the first portion of the second signal line and the 2B extending portion is closer than a distance between the vertical plane and the 3B extending portion.

4. The flexible circuit board according to claim 1, wherein: When viewed in the normal direction, a portion of the second dielectric in contact with the 2A extension portion overlaps at least a portion of a portion of the first dielectric in contact with the 1A extension portion, but does not overlap with the first signal line. When viewed in the normal direction, a portion of the third dielectric in contact with the 3A extending portion at least partially overlaps with a portion of the second dielectric in contact with the 2A extending portion, but does not overlap with the second signal line.

5. The flexible circuit board according to claim 1, wherein: When viewed in the normal direction, a portion of the second dielectric in contact with the 2B extension portion overlaps at least a portion of a portion of the first dielectric in contact with the 1B extension portion, but does not overlap with the first signal line. When viewed in the normal direction, a portion of the third dielectric in contact with the 3B extending portion at least partially overlaps with a portion of the second dielectric in contact with the 2B extending portion, but does not overlap with the second signal line.

6. The flexible circuit board according to claim 1, wherein: When viewed in the normal direction, a portion of the second dielectric in contact with the 2A extension portion overlaps at least a portion of a portion of the first dielectric in contact with the 1A extension portion, but does not overlap with the first signal line. When viewed in the normal direction, a portion of the second dielectric in contact with the 2B extension portion overlaps at least a portion of a portion of the first dielectric in contact with the 1B extension portion, but does not overlap with the first signal line. When viewed in the normal direction, a portion of the third dielectric in contact with the 3A extension portion overlaps at least a portion of a portion of the second dielectric in contact with the 2A extension portion, but does not overlap with the second signal line. When viewed in the normal direction, a portion of the third dielectric in contact with the 3B extending portion at least partially overlaps with a portion of the second dielectric in contact with the 2B extending portion, but does not overlap with the second signal line.

7. The flexible circuit board according to claim 1, wherein: The flexible circuit board also includes: The first integrated dielectric is disposed on a fourth plane parallel to the first plane and between the first dielectric and the second dielectric, and overlaps the first dielectric and the second dielectric when viewed in the normal direction.

8. The flexible circuit board according to claim 7, wherein: When viewed in the normal direction, the first integrated dielectric further includes a portion corresponding to a portion that does not overlap with either the first dielectric or the second dielectric, between a portion overlapping with the first dielectric and a portion overlapping with the second dielectric.

9. The flexible circuit board according to claim 7, wherein: When viewed in the normal direction, the first integrated dielectric does not include a portion corresponding to a portion that does not overlap with either the first dielectric or the second dielectric, between a portion overlapping with the first dielectric and a portion overlapping with the second dielectric.

10. The flexible circuit board according to claim 7, wherein: The flexible circuit board also includes: The second integrated dielectric is disposed on a fifth plane parallel to the first plane and located between the second dielectric and the third dielectric. When viewed in the normal direction, the second integrated dielectric overlaps the second dielectric and the third dielectric.

11. The flexible circuit board according to claim 10, wherein: When viewed in the normal direction, the second integrated dielectric further includes a portion corresponding to a portion that does not overlap with either the second dielectric or the third dielectric, between a portion overlapping with the second dielectric and a portion overlapping with the third dielectric.

12. The flexible circuit board according to claim 10, wherein: When viewed in the normal direction, the second integrated dielectric does not include a portion corresponding to a portion that does not overlap with either the second dielectric or the third dielectric, between a portion overlapping with the second dielectric and a portion overlapping with the third dielectric.

13. The flexible circuit board according to claim 10, wherein: The flexible circuit board also includes: a first welding sheet or a first prepreg material, disposed between the first integrated dielectric and the first dielectric or between the first integrated dielectric and the second dielectric, to combine the first integrated dielectric and the first dielectric or to combine the first integrated dielectric and the second dielectric; and A second welding sheet or a second prepreg material is disposed between the second integrated dielectric and the second dielectric or between the second integrated dielectric and the third dielectric to combine the second integrated dielectric and the second dielectric or to combine the second integrated dielectric and the third dielectric.

14. The flexible circuit board according to claim 10, wherein: The flexible circuit board also includes: a first shielding portion, which contacts a portion of the first integrated dielectric that overlaps with the second dielectric when viewed in the normal direction; and The second shielding portion is in contact with a portion of the second integrated dielectric that overlaps with the third dielectric when viewed in the normal direction.

15. The flexible circuit board according to claim 14, wherein: The flexible circuit board also includes: a first integrated ground contacting a portion of the first integrated dielectric overlapping the first dielectric when viewed in the normal direction and having a shape corresponding to the shape of the first dielectric when viewed in the normal direction; and The second integrated ground contacts a portion of the second integrated dielectric overlapping the second dielectric when viewed in the normal direction, and has a shape corresponding to the shape of the second dielectric when viewed in the normal direction.

16. The flexible circuit board according to claim 14, wherein: The first shielding part and the second shielding part respectively include conductive paste or electromagnetic interference shielding film.

17. The flexible circuit board according to claim 10, wherein: The flexible circuit board also includes: a first integrated ground contacting the first integrated dielectric and having a shape corresponding to the shape of the first integrated dielectric when viewed in the normal direction; and The second integrated ground contacts the second integrated dielectric and has a shape corresponding to the shape of the second integrated dielectric when viewed in the normal direction.

18. The flexible circuit board according to claim 17, wherein: The flexible circuit board also includes: a first shielding portion, which contacts a portion of the first integrated ground that overlaps with the second dielectric when viewed in the normal direction; and The second shielding portion is in contact with a portion of the second integrated ground that overlaps with the third dielectric when viewed in the normal direction.

19. The flexible circuit board according to claim 18, wherein: The first shielding part and the second shielding part respectively include conductive paste or electromagnetic interference shielding film.

20. The flexible circuit board according to claim 1, wherein: When viewed in the normal direction, a portion of the second dielectric in contact with the 2A extension portion at least partially overlaps with a portion of the first dielectric in contact with the 1A extension portion, but does not overlap with the first signal line.

21. The flexible circuit board according to claim 1, wherein: When viewed in the normal direction, a portion of the third dielectric in contact with the 3A extending portion at least partially overlaps with a portion of the second dielectric in contact with the 2A extending portion, but does not overlap with the second signal line.

22. The flexible circuit board according to claim 1, wherein: When viewed in the normal direction, the second portion of the first signal line and the second portion of the third signal line are symmetrical with respect to the second portion of the second signal line.

23. The flexible circuit board according to claim 1, wherein: The length of the 3A extension portion is longer than the length of the 1A extension portion, A distance between a vertical plane including the first portion of the third signal line and the 3B extending portion is greater than a distance between the vertical plane and the 1B extending portion.

24. The flexible circuit board according to claim 1, wherein: The flexible circuit board includes two first portions of the first signal line, two second portions of the first signal line, two first portions of the second signal line, and two second portions of the second signal line. The two second portions of the first signal line are symmetrically connected to each other, and the two first portions of the first signal line are respectively connected to one end of the second portion of the first signal line. The two second portions of the second signal line are symmetrically connected to each other, and the two first portions of the second signal line are respectively connected to one end of the second portion of the second signal line.

25. A wireless terminal, comprising: A first signal line extending on a first plane; a first dielectric extending along an extending direction of the first signal line in a state of being in contact with the first signal line; a second signal line extending on a second plane parallel to the first plane; a second dielectric extending along an extending direction of the second signal line in a state of being in contact with the second signal line; a third signal line extending on a third plane parallel to the second plane; as well as a third dielectric extending along an extending direction of the third signal line in a state of being in contact with the third signal line, The first signal line includes a first portion overlapping with the second signal line when viewed in a normal direction of the first plane and a second portion not overlapping with the second signal line. The second signal line includes a first portion overlapping with the first signal line and a second portion not overlapping with the first signal line when viewed in the normal direction. At least a portion of the second portion of the first signal line and at least a portion of the second portion of the second signal line are respectively in contact with a surface of the wireless terminal that is arranged perpendicular to the first plane. The third signal line includes a first portion that overlaps all of the first signal line and the second signal line when viewed in the normal direction, and a second portion that does not overlap any of the first signal line and the second signal line. The second portion of the first signal line includes a 1A bent portion connected to the first portion of the first signal line and bent on the first plane, a 1A extended portion extending in a direction bent from the 1A bent portion on the first plane, a 1B bent portion bent from the extended 1A extended portion on the first plane, and a 1B extended portion extending in a direction bent from the 1B bent portion on the first plane. The second portion of the second signal line includes a 2A bent portion connected to the first portion of the second signal line and bent on the second plane, a 2A extended portion extending in a direction bent from the 2A bent portion on the second plane, a 2B bent portion bent from the extended 2A extended portion on the second plane, and a 2B extended portion extending in a direction bent from the 2B bent portion on the second plane. The second portion of the third signal line includes a 3A bent portion connected to the first portion of the third signal line and bent on the third plane, a 3A extended portion extending in a direction toward which the 3A bent portion is bent on the third plane, a 3B bent portion bent from the extended 3A extended portion on the third plane, and a 3B extended portion extending in a direction toward which the 3B bent portion is bent on the third plane. The relative lengths of the 1A extending portion, the 2A extending portion, and the 3A extending portion are different from each other.

26. A wireless terminal, comprising: Battery; A first signal line extending on a first plane; a first dielectric extending along an extending direction of the first signal line in a state of being in contact with the first signal line; a second signal line extending on a second plane parallel to the first plane; a second dielectric extending along an extending direction of the second signal line in a state of being in contact with the second signal line; a third signal line extending on a third plane parallel to the second plane; as well as a third dielectric extending along an extending direction of the third signal line in a state of being in contact with the third signal line, The first signal line includes a first portion overlapping with the second signal line when viewed in a normal direction of the first plane and a second portion not overlapping with the second signal line. The second signal line includes a first portion overlapping with the first signal line and a second portion not overlapping with the first signal line when viewed in the normal direction. The second portion of the first signal line and at least a portion of the second portion of the second signal line are respectively arranged above or below the battery, The third signal line includes a first portion that overlaps all of the first signal line and the second signal line when viewed in the normal direction, and a second portion that does not overlap any of the first signal line and the second signal line. The second portion of the first signal line includes a 1A bent portion connected to the first portion of the first signal line and bent on the first plane, a 1A extended portion extending in a direction bent from the 1A bent portion on the first plane, a 1B bent portion bent from the extended 1A extended portion on the first plane, and a 1B extended portion extending in a direction bent from the 1B bent portion on the first plane. The second portion of the second signal line includes a 2A bent portion connected to the first portion of the second signal line and bent on the second plane, a 2A extended portion extending in a direction bent from the 2A bent portion on the second plane, a 2B bent portion bent from the extended 2A extended portion on the second plane, and a 2B extended portion extending in a direction bent from the 2B bent portion on the second plane. The second portion of the third signal line includes a 3A bent portion connected to the first portion of the third signal line and bent on the third plane, a 3A extended portion extending in a direction toward which the 3A bent portion is bent on the third plane, a 3B bent portion bent from the extended 3A extended portion on the third plane, and a 3B extended portion extending in a direction toward which the 3B bent portion is bent on the third plane. The relative lengths of the 1A extending portion, the 2A extending portion, and the 3A extending portion are different from each other.

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