Terminal connection part of electronic equipment

Abstract

To provide a terminal connection section of an electronic apparatus capable of suppressing increase in length.SOLUTION: A first circuit member 30 includes first bending parts 50 and second bending parts 60. Each one of the first bending parts 50 has an L-shape and includes a vertical part 50a and a horizontal part 50b. Each one of the second bending parts 60 is bent toward the opposite side of the first bending part 50. A first terminal 31 is arranged in the first bending part 50. A second terminal 32 is arranged in the second bending part 60. An opening 61 is formed between the first bending part 50 and the second bending part 60. Projection parts 90 of a second circuit member 40 are inserted into the respective openings 61. A first board side terminal 81 is arranged on a first surface 71 of the second circuit member 40. A second board side terminal 82 is arranged on a second surface 72. The first terminal 31 and the first board side terminal 81 are connected by a first conductive member 101. The second terminal 32 and the second board side terminal 82 are connected by a second conductive member 102.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a terminal connection portion suitable for connecting a first circuit member and a second circuit member of an electronic device such as a hard disk device.

Background Art

[0002] A hard disk device (hereinafter simply referred to as a disk device) is used in an information processing device such as a personal computer. The disk device includes a magnetic disk that rotates around a spindle, a carriage that pivots around a pivot shaft, and the like. The carriage has a plurality of arm portions and pivots around the pivot shaft by a positioning motor.

[0003] A suspension for the disk device (hereinafter referred to as a suspension) is attached to the arm portion. The suspension includes a load beam and a flexure arranged along the load beam. A slider is mounted near the tip of the flexure. An element for performing access such as data reading or writing is provided on the slider.

[0004] The flexure includes a metal base made of a thin stainless steel plate, a base insulating layer formed on the metal base, a plurality of conductors formed on the base insulating layer, a cover layer covering these conductors, and the like. One end side of each conductor is connected to the element of the slider and various functional components, respectively. The other end side of each conductor is connected to an electronic device such as a preamplifier via a terminal connection portion. The base insulating layer and the cover layer are made of an electrically insulating resin such as polyimide. The wiring portion of the flexure is constituted by the base insulating layer, the plurality of conductors, the cover layer, and the like.

[0005] As described in Patent Document 1, the flexiser has a flexiser body portion that follows the road beam and a flexiser tail that extends behind the road beam. A tail pad portion is formed at the end of the flexiser tail.

[0006] Multiple terminals, referred to as tail terminals, are arranged on the tail pad portion. These multiple tail terminals are spaced apart along the length of the tail pad portion. Each of these tail terminals is electrically connected to the conductor of the wiring portion. Terminals provided on a circuit board such as a preamplifier are connected to these tail terminals via a conductive material such as solder.

[0007] To accommodate the increasing density of data, the number of disks contained in a single disk drive tends to increase. Consequently, the number of suspensions used in a single disk drive also increases. Furthermore, the increased functionality of the suspensions has led to an increase in the number of conductors in the flexi-shaft wiring. Therefore, the number of tail terminals also increases. [Prior art documents] [Patent Documents]

[0008] [Patent Document 1] U.S. Patent No. 8,467,153 [Patent Document 2] Patent No. 5075970 [Overview of the project] [Problems that the invention aims to solve]

[0009] As the number of tail terminals increases, the length of the tail pad portion also increases. However, since there is limited space inside the disk drive, the length of the tail pad portion is constrained. Therefore, depending on the specifications of the disk drive, it may be difficult to arrange a large number of tail terminals on the tail pad portion.

[0010] Reducing the size of the tail terminals allows more tail terminals to be placed on the tail pad. However, this makes it difficult to connect the small tail terminals to the terminals on the circuit board using conductive materials such as solder. Moreover, as the distance between adjacent terminals decreases, it becomes difficult to prevent electrical short circuits.

[0011] The tail pad portion described in Patent Document 2 has multiple terminals arranged on one side and the other side of the tail pad portion. However, when the width of the tail pad portion is small, the distance between terminals becomes small, making it difficult to ensure sufficient electrical insulation distance.

[0012] An object of one embodiment of the present invention is to provide a terminal connection portion for connecting a first circuit member and a second circuit member having a plurality of terminals, which can suppress an increase in the length of the terminal connection portion and can avoid short circuits between terminals. [Means for solving the problem]

[0013] A terminal connection in one embodiment includes a first circuit member and a second circuit member. The first circuit member has one surface and another surface, and has a first conductor and a second conductor disposed on the one surface. A part of the first circuit member is provided with a first bend that bends in the thickness direction of the first circuit member and a second bend that bends in the opposite direction to the first bend. A first terminal is disposed in the first bend. The first terminal is electrically connected to the first conductor. A second terminal is disposed in the second bend. The second terminal is electrically connected to the second conductor.

[0014] The second circuit member has an electrically insulating substrate. The substrate has a first surface and a second surface. On the first surface, a first substrate-side terminal is located at a position corresponding to the first terminal. On the second surface, a second substrate-side terminal is located at a position corresponding to the second terminal. The first terminal and the first substrate-side terminal are connected by a first conductive member. The second terminal and the second substrate-side terminal are connected by a second conductive member.

[0015] An example of the first bent portion has a vertical portion that bends in the thickness direction of the first circuit member and a horizontal portion that extends from the vertical portion in a direction along one of the surfaces. An opening is formed between the horizontal portion and the second bent portion. A protrusion may be formed on the second circuit member. The protrusion is inserted into the opening. The first substrate-side terminal and the second substrate-side terminal are arranged on the protrusion.

[0016] The first circuit member may have a metal base and a base insulating layer that overlaps the metal base. The first bent portion may include a part of the metal base, a part of the base insulating layer, and the first terminal. The second bent portion may also include a part of the metal base, a part of the base insulating layer, and the second terminal. An example of the first bent portion is that it is bent on one side of the first circuit member. The second bent portion is that it is bent on the other side of the first circuit member.

[0017] The first circuit member is, for example, the tail pad portion of the suspension flexure for a disk drive. An example of the second circuit member is the circuit board of the disk drive. An example of the first conductive member is a solder bump attached to the first terminal. An example of the second conductive member is a solder bump attached to the second terminal. Another example of the first conductive member may be a solder bump attached to the first board-side terminal. Another example of the second conductive member may be a solder bump attached to the second board-side terminal.

[0018] The first circuit member may have a metal base and a base insulating layer overlapping the metal base. The first bending portion may have a terminal portion consisting only of the first terminal. Further, the second bending portion may have a terminal portion consisting only of the second terminal. The first bending portion may bend to the side of the other surface of the first circuit member, and the second bending portion may bend to the side of the one surface of the first circuit member.

Effect of the Invention

[0019] According to one embodiment of the present invention, the first terminal disposed at the first bending portion of the first circuit member and the first substrate-side terminal provided on the first surface of the second circuit member can be connected to each other. Further, the second terminal disposed at the second bending portion of the first circuit member and the second substrate-side terminal provided on the second surface of the second circuit member can be connected to each other.

Brief Description of the Drawings

[0020] [Figure 1] A plan view showing an example of a suspension for a disk device. [Figure 2] A perspective view showing an enlarged part of a terminal connection portion according to the first embodiment. [Figure 3] A cross-sectional view of the terminal connection portion along the line F3-F3 in FIG. 2. [Figure 4] A perspective view of a part of the first circuit member of the terminal connection portion shown in FIG. 2. [Figure 5] A perspective view of the first circuit member before bending the first bending portion and the second bending portion of the first circuit member shown in FIG. 4. [Figure 6] A perspective view of a part of the second circuit member of the terminal connection portion shown in FIG. 2. [Figure 7] A cross-sectional view schematically showing an example of a disk device. [Figure 8] A perspective view of a part of the first circuit member of the terminal connection portion according to the second embodiment. [Figure 9] A perspective view of a part of the second circuit member of the terminal connection portion according to the third embodiment. [Figure 10]A perspective view showing a part of the terminal connection section according to the fourth embodiment. [Figure 11] A perspective view of a part of the first circuit member according to the fifth embodiment. [Figure 12] A cross-sectional view of the terminal connection section equipped with the first circuit member shown in Figure 11, along the line F12-F12 in Figure 11. [Modes for carrying out the invention]

[0021] [First Embodiment] The terminal connection section of an electronic device according to one embodiment will be described below with reference to Figures 1 to 7. Figure 1 is a plan view showing an example of a suspension 10 used in a hard disk drive. The suspension 10 includes a base plate 11, a load beam 12, a flexure 13, and a slider 15 provided on the tongue portion 14 of the flexure 13.

[0022] The load beam 12 is made of a stainless steel plate and extends along the length of the suspension 10. The double-headed arrow X1 shown in Figure 1 indicates the longitudinal direction of the load beam 12, i.e., the longitudinal direction of the suspension 10. The thickness of the load beam 12 is, for example, 20 to 40 μm, but other thicknesses are also acceptable.

[0023] The flexi-shaft 13 includes a flexi-shaft body portion 16 fixed to the road beam 12, and a flexi-shaft tail 17 extending from the flexi-shaft body portion 16 to the rear of the base plate 11 (in the direction indicated by arrow R1 in Figure 1). A tail pad portion 17a is formed at the end of the flexi-shaft tail 17. The tail pad portion 17a is part of the flexi-shaft tail 17 and forms part of the terminal connection portion 20.

[0024] In this specification, the tail pad portion 17a may be referred to as the first circuit member 30. The first circuit member 30 is connected to the second circuit member 40 via the terminal connection portion 20. The second circuit member 40 is, for example, the circuit board on the amplifier side. An example of the second circuit member 40 is a flexible printed circuit board. The terminal connection portion 20 is formed in the portion where the first circuit member 30 and the second circuit member 40 overlap each other.

[0025] Figure 2 is an enlarged perspective view of a part of the terminal connection portion 20 according to the first embodiment. Figure 3 is a cross-sectional view of the terminal connection portion 20 along the line F3-F3 in Figure 2. Figure 4 shows a part of the first circuit member 30. As shown in Figure 3, the first circuit member 30 has one parallel surface 30a and the other parallel surface 30b. As shown in Figure 5, a plurality of first terminals 31 and a plurality of second terminals 32 are alternately arranged on one surface 30a. For convenience of explanation, Figures 2, 4, and 5 all schematically represent a terminal connection portion 20 having two first terminals 31 and two second terminals 32.

[0026] As shown in Figures 2 to 5, the first circuit member 30, which is part of the flexure 13, includes a metal base 41 and a wiring section 42. The metal base 41 is made of a thin sheet of stainless steel. An example of the thickness of the metal base 41 is 20 μm (12 to 25 μm), which is smaller than the thickness of the load beam 12. The wiring section 42 is arranged along the metal base 41.

[0027] The wiring section 42 includes a base insulating layer 43 made of an electrically insulating resin such as polyimide, a plurality of conductors 44, 45 (only a portion is shown) formed on the base insulating layer 43, and a cover layer covering the conductors 44, 45. The cover layer is made of an electrically insulating resin such as polyimide. To avoid complicating the drawing, the cover layer is not shown in the drawing. The conductors 44, 45 are arranged on one surface 30a of the first circuit member 30.

[0028] The first circuit member 30 has a plurality of first bent portions 50 and a plurality of second bent portions 60. The first bent portions 50 and the second bent portions 60 are arranged alternately at a predetermined pitch in the longitudinal direction of the first circuit member 30 (shown as L1 in Figure 4). Since the plurality of first bent portions 50 have a common configuration with respect to each other, the following description will refer to one first bent portion 50 as a representative. Similarly, since the plurality of second bent portions 60 have a common configuration with respect to each other, the following description will refer to one second bent portion 60 as a representative.

[0029] The first bent portion 50 is part of the first circuit member 30 and is provided on the side of the first circuit member 30. The first bent portion 50 is bent in the thickness direction of the first circuit member 30 at an angle θ1 (shown in Figure 4) with respect to one surface 30a. The angle θ1 is close to 90°. However, the angle θ1 may be other than 90°. The first bent portion 50 includes part of the metal base 41 and part of the base insulating layer 43. The first terminal 31 is positioned on the first bent portion 50.

[0030] The first bent portion 50 has a vertical portion 50a and a horizontal portion 50b. The vertical portion 50a is bent in the thickness direction of the first circuit member 30 at an angle θ1 (shown in Figure 4) with respect to one surface 30a of the first circuit member 30. The horizontal portion 50b extends from the tip of the vertical portion 50a along one surface 30a in the length direction of the first circuit member 30 (shown as L1 in Figure 4). The first bent portion 50 is generally L-shaped.

[0031] The vertical portion 50a has a pair of side surfaces 51, 52 extending in the thickness direction of the first circuit member 30. The horizontal portion 50b has a pair of side surfaces 53, 54 along one surface 30a of the first circuit member 30. As shown in Figure 4, an opening 61 is formed between the paired first bend portion 50 and the second bend portion 60. The opening 61 is defined by one side surface 51 of the vertical portion 50a, one side surface 53 of the horizontal portion 50b, and the folded edge 62 of the second bend portion 60 (shown in Figure 4).

[0032] A second bent portion 60 is provided on the first circuit member 30. The second bent portion 60 is formed on the side of the first circuit member 30 and is bent at an angle close to 90° toward the other surface 30b. That is, the second bent portion 60 is bent on the opposite side of the first bent portion 50 with respect to the thickness direction of the first circuit member 30. However, the second bent portion 60 may be bent at an angle other than 90°. The second bent portion 60 includes a part of the metal base 41 and a part of the base insulating layer 43. A second terminal 32 is arranged on the second bent portion 60.

[0033] Figure 5 shows the first circuit member 30 before bending to form the first bend 50 and the second bend 60. The first circuit member 30 before bending is almost flat. A base insulating layer 43 is superimposed on the metal base 41. On the base insulating layer 43, the first terminal 31 and the second terminal 32 are formed alternately in the longitudinal direction of the first circuit member 30. The first conductor 44 is connected to the first terminal 31. The second conductor 45 is connected to the second terminal 32. These conductors 44 and 45 are covered by a cover insulating layer, but are not shown in the drawing to avoid complicating the drawing. A gold plating layer may be formed on the surface of the first terminal 31 and the second terminal 32, respectively.

[0034] Figure 6 shows a part of the second circuit member 40. An example of the second circuit member 40 is a flexible printed circuit board, which has a substrate (board) 70 made of an electrically insulating resin. The substrate 70 has a first surface 71, a second surface 72, and a side portion 73. The second surface 72 is the surface opposite to the first surface 71. The first surface 71 and the second surface 72 are substantially parallel. In this specification, for the sake of explanation, the first surface 71 may be referred to as the front side and the second surface 72 as the back side.

[0035] The second circuit member 40 has a first substrate-side terminal 81 provided on the first front surface 71 and a second substrate-side terminal 82 provided on the second back surface 72. The first substrate-side terminal 81 is electrically connected to one conductor 85. The second substrate-side terminal 82 is electrically connected to the other conductor 86. Conductors 85 and 86 are covered by a cover insulating layer, but to avoid complicating the drawing, the cover insulating layer is omitted in the drawing. The surface of the first substrate-side terminal 81 and the surface of the second substrate-side terminal 82 may each be gold-plated.

[0036] As shown in Figure 6, a protrusion 90 and recesses 91 and 92 are formed on the side portion 73 of the second circuit member 40. The protrusion 90 is formed between the recesses 91 and 92. The width W1 of the protrusion 90 is smaller than the width W2 (shown in Figure 4) of the opening 61 of the first circuit member 30. The thickness T1 (shown in Figure 6) of the protrusion 90 is smaller than the height H1 (shown in Figure 4) of the opening 61. Therefore, the protrusion 90 can be inserted into the opening 61.

[0037] On the first surface 71 of the second circuit member 40, a first board-side terminal 81 is positioned where a protrusion 90 is provided. The first board-side terminal 81 is positioned in a location corresponding to the first terminal 31 of the first circuit member 30. On the second surface 72 of the second circuit member 40, a second board-side terminal 82 is positioned where a protrusion 90 is provided. The second board-side terminal 82 is positioned in a location corresponding to the second terminal 32 of the first circuit member 30. The first board-side terminal 81 and the second board-side terminal 82 are connected to an electrical circuit such as a preamplifier via conductors 85 and 86, respectively.

[0038] As shown in Figure 2, the protrusion 90 of the second circuit member 40 is inserted into the opening 61 of the first circuit member 30. The first terminal 31 and the first substrate-side terminal 81 are electrically connected by the first conductive member 101. The second terminal 32 and the second substrate-side terminal 82 are electrically connected by the second conductive member 102. An example of the first conductive member 101 and the second conductive member 102 is solder.

[0039] As described above, the terminal connection portion 20 of this embodiment has an L-shaped first bent portion 50 provided on the first circuit member 30 and a second bent portion 60 that is paired with the first bent portion 50. The second bent portion 60 is bent in the opposite direction to the first bent portion 50. An opening 61 is formed between the first bent portion 50 and the second bent portion 60. The paired first terminal 31 and the first substrate-side terminal 81 correspond to each other on the first surface 71. The paired second terminal 32 and the second substrate-side terminal 82 correspond to each other on the second surface 72.

[0040] The first pair of terminals 31 and the first substrate-side terminal 81 are connected by the first conductive member 101. The first conductive member 101 is supplied to the first surface 71 on the front side. The second pair of terminals 32 and the second substrate-side terminal 82 are connected by the second conductive member 102. The second conductive member 102 is supplied to the second surface 72 on the back side. This prevents an electrical short circuit between the first conductive member 101 and the second conductive member 102.

[0041] In this way, the first terminal 31 and the first substrate-side terminal 81 are connected by the first conductive member 101 on the first surface 71 on the front side. Also, the second terminal 32 and the second substrate-side terminal 82 are connected by the second conductive member 102 on the second surface 72 on the back side. As a result, the length of the terminal connection section 20 having multiple terminals 31, 32 and multiple substrate-side terminals 81, 82 could be shortened.

[0042] Figure 7 is a schematic cross-sectional view showing an example of a disk drive 120 equipped with a suspension 10. The disk drive 120 includes a case 121 (partially shown), a disk 122 that rotates around a spindle, a carriage 124 that pivots around a pivot axis 123, and a positioning motor 125 that drives the carriage 124. The case 121 is sealed by a lid. Suspensions 10 are attached to the ends of several arms 126 of the carriage 124. A signal processing circuit 127, such as a preamplifier, is housed inside the case 121.

[0043] As the disc 122 rotates at high speed, an air bearing is formed between the slider 15 (shown in Figures 1 and 7) and the disc 122. When the carriage 124 is rotated by the positioning motor 125, the suspension 10 moves radially around the disc 122. This moves the slider 15 to the desired position on the disc 122.

[0044] [Second Embodiment] Figure 8 shows the first circuit member 30 of the terminal connection portion according to the second embodiment. In this embodiment, a solder bump 131, which is the first conductive member, is provided on the first bent portion 50. A solder bump 132, which is the second conductive member, is provided on the second bent portion 60.

[0045] By heating and melting the solder bumps 131 and 132, the first terminal 31 and the first substrate-side terminal 81 (shown in Figure 2) are connected by the solder bump 131. The second terminal 32 and the second substrate-side terminal 82 (shown in Figure 2) are connected by the solder bump 132. As for the other configurations and operations, the terminal connection part of the second embodiment is configured in the same way as the terminal connection part 20 (shown in Figure 2) of the first embodiment, so common components are given the same reference numerals and their descriptions are omitted.

[0046] [Third Embodiment] Figure 9 shows the second circuit member 40 of the terminal connection section according to the third embodiment. In this embodiment, solder bumps 141 and 142 are provided on the first substrate-side terminal 81 and the second substrate-side terminal 82 of the second circuit member 40, respectively. As the other configurations and operations of the terminal connection section of the third embodiment are common to the terminal connection section 20 of the first embodiment, common components are denoted by the same reference numerals and their descriptions are omitted.

[0047] [Fourth Embodiment] Figure 10 shows a terminal connection portion 150 according to the fourth embodiment. In this terminal connection portion 150, the first circuit member 30 has a terminal portion formed on the lateral portion 50b of the first bent portion 50, consisting only of a first terminal 31. This terminal portion does not include a metal base 41 and a base insulating layer 43. Therefore, a first conductive member 101 for connecting the first terminal 31 and the first substrate-side terminal 81 can be provided on the same side as the second conductive member 102. As the other configurations and operations are common to the terminal connection portion 150 of the fourth embodiment and the terminal connection portion 20 of the first embodiment, common components are denoted by the same reference numerals and their descriptions are omitted.

[0048] [Fifth Embodiment] Figure 11 shows a first circuit member 30 according to the fifth embodiment. Figure 12 is a cross-sectional view of a terminal connection portion 160 along the line F12-F12 in Figure 11. The first circuit member 30 of this terminal connection portion 160 has a first bent portion 50A bent toward the other side 30b of the first circuit member 30 and a second bent portion 60A bent toward the side of one side 30a of the first circuit member 30.

[0049] The first bent portion 50A has a terminal portion consisting only of the first terminal 31. The first terminal 31 and the substrate-side terminal 82 are connected by the first conductive member 101. The second bent portion 60A has a terminal portion consisting only of the second terminal 32. The second terminal 32 and the substrate-side terminal 81 are connected by the second conductive member 102.

[0050] According to the terminal connection portion 160 of the fifth embodiment, the second circuit member 40 can be positioned on the other side 30b of the first circuit member 30. Regarding other configurations and operations, the terminal connection portion 160 of the fifth embodiment is common to the terminal connection portion 20 of the first embodiment; therefore, common components are denoted by the same reference numerals and their descriptions are omitted.

[0051] In implementing the present invention, it goes without saying that various specific embodiments of the elements constituting the present invention can be modified, including the specific forms of the first and second circuit members, the shape and position of the first and second terminals, and the shape and position of the first and second substrate-side terminals. Furthermore, the technical concept of the present invention may be applied to terminal connection parts of electronic devices other than disk drives. [Explanation of symbols]

[0052] 10... Suspension for disk drive, 13... Flexisha, 17... Flexisha tail, 17a... Tail pad section, 20... Terminal connection section, 30... First circuit member, 30a... One side, 30b... Other side, 31... First terminal, 32... Second terminal, 40... Second circuit member, 41... Metal base, 42... Wiring section, 43... Base insulating layer, 44, 45... Conductor, 50, 50A... First bending section, 50a... Vertical Part, 50b...side part, 60, 60A...second bend part, 61...opening, 62...folded edge, 70...substrate, 71...first surface, 72...second surface, 81...first substrate-side terminal, 82...second substrate-side terminal, 90...protrusion, 101...first conductive member, 102...second conductive member, 120...disk device, 131, 132...solder bump, 141, 142...solder bump, 150...terminal connection part, 160...terminal connection part.

Claims

1. A terminal connection part of an electronic device, A first circuit member having one surface and another surface, and comprising a first conductor and a second conductor disposed on the one surface, A first bent portion is a part of the first circuit member that is bent in the thickness direction of the first circuit member, A second bent portion is a part of the first circuit member that bends in the opposite direction to the first bent portion, A first terminal is arranged in the first bend and is in electrical contact with the first conductor, A second terminal is provided in the second bend and is in electrical contact with the second conductor, A second circuit member comprising an electrically insulating substrate having a first surface and a second surface, A first substrate-side terminal positioned on the first surface corresponding to the first terminal, A second substrate-side terminal positioned on the second surface corresponding to the second terminal, A first conductive member connecting the first terminal and the first substrate-side terminal, A second conductive member connecting the second terminal and the second substrate-side terminal, A terminal connection part for electronic equipment characterized by being equipped with the following.

2. In the terminal connection part according to claim 1, The first bent portion has a vertical portion that bends in the thickness direction of the first circuit member and a horizontal portion that extends from the vertical portion in a direction along one of the surfaces, It has an opening formed between the lateral portion and the second bent portion, The second circuit member has a protrusion that is inserted into the opening, A terminal connection portion in which the first substrate-side terminal and the second substrate-side terminal are arranged on the protrusion.

3. In the terminal connection part according to claim 1, The first circuit member comprises a metal base and a base insulating layer that overlaps the metal base. The first bent portion includes a part of the metal base, a part of the base insulating layer, and the first terminal. The second bent portion is a terminal connection portion that includes a part of the metal base, a part of the base insulating layer, and the second terminal.

4. In the terminal connection part according to claim 1, A terminal connection portion in which the first bent portion is bent toward one side of the first circuit member, and the second bent portion is bent toward the other side.

5. In the terminal connection part according to claim 1, The first circuit member is the tail pad portion of the flexure of the suspension of the disc drive, The terminal connection portion is the circuit board of the disk device, which is the second circuit member.

6. In the terminal connection part according to claim 1, A terminal connection portion in which the first conductive member is a solder bump attached to the first terminal, and the second conductive member is a solder bump attached to the second terminal.

7. In the terminal connection part according to claim 1, A terminal connection portion in which the first conductive member is a solder bump attached to the first substrate-side terminal, and the second conductive member is a solder bump attached to the second substrate-side terminal.

8. In the terminal connection part according to claim 1, The first circuit member comprises a metal base and a base insulating layer that overlaps the metal base. A terminal connection portion having a terminal portion consisting only of the first terminal in the first bent portion.

9. In the terminal connection part according to claim 1, The first circuit member comprises a metal base and a base insulating layer that overlaps the metal base. A terminal connection portion having a terminal portion consisting only of the second terminal in the second bent portion.

10. In the terminal connection part according to claim 9, A terminal connection portion in which the first bent portion is bent toward the other face of the first circuit member, and the second bent portion is bent toward the one face of the first circuit member.

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