Electronic module

Abstract

The utility model discloses an electronic module, which is characterized in that a chip module is provided with a first circuit board, a first electric connector is arranged on the upper surface of the first circuit board, and the first electric connector is connected with a plurality of first cables; the second electric connector extends from the edge of the first circuit board to form a plugging part, the plugging part is positioned in front of the first electric connector, the second electric connector comprises a slot, and the second electric connector is connected with a plurality of second cables; the inserting part is inserted into the slot to enable the second electric connector and the first circuit board to be electrically conducted, the second electric connector is located below the first cable, and the projection of the first electric connector and the projection of the second electric connector are partially overlapped in the front-back direction; therefore, on the premise of ensuring that the height of the first electric connector installed on the upper surface of the first circuit board is fixed in the vertical direction, the second electric connector is added to connect more cables for signal transmission, and more high-speed signal transmission channels are added in the same height space.

Description

[Technical Field]

[0001] This utility model relates to an electronic module, and more particularly to an electronic module that adds a high-speed signal transmission channel. [Background Technology]

[0002] A common electronic module for transmitting high-speed signals from a chip module includes a chip and an adapter circuit board located below the chip. A cable connector is mounted on the upper surface of the adapter circuit board. The chip and the cable connector are electrically connected through the adapter circuit board, thereby transmitting the high-speed signals carried by the chip via cables. However, as the number of high-speed signals carried by chips increases, a single cable connector can no longer meet the requirements for transmitting high-speed signals. To solve this problem, common technical solutions include increasing the height of the cable connector so that multiple rows of cables arranged vertically can be connected simultaneously by the same cable connector, or increasing the number of horizontally arranged terminals in the cable connector to connect more cables in the same row. However, these technical solutions undoubtedly increase the height occupied by the cable connector above the adapter circuit board or increase the area occupied by the cable connector on the first circuit board, which does not conform to the trend of miniaturization and is not conducive to subsequent chip placement and optimization of structural layout.

[0003] Therefore, it is necessary to design a new electronic module to overcome the above problems. [Utility Model Content]

[0004] In view of the problems faced by the prior art, the purpose of this invention is to provide an electronic module that increases the high-speed signal transmission channel.

[0005] To achieve the above objectives, the present invention employs the following technical means: an electronic module, characterized in that it comprises: a chip module, including a chip and a first circuit board disposed below the chip; a first electrical connector mounted on the upper surface of the first circuit board, the first electrical connector having a plurality of first terminals, each first terminal having a first contact portion and a first wiring portion, the first contact portion contacting the first circuit board downwards, the first wiring portion for connecting a first cable, the first cable extending out of the first electrical connector in a front-rear direction; a second electrical connector including a slot and a plurality of second terminals, each second terminal having a second contact portion and a second wiring portion, the second wiring portion for connecting a second cable; a plug portion extending from the edge of the first circuit board, the plug portion being located on the front side of the first electrical connector, the plug portion being plugged into the slot, the second contact portion being exposed in the slot and electrically connected to the plug portion, and the second electrical connector being located below the first cable, the projections of the first electrical connector and the second electrical connector at least partially overlapping in a front-rear direction.

[0006] Furthermore, the second electrical connector has a housing with a top wall and a bottom wall located on the upper and lower sides of the first circuit board, respectively. In the vertical direction, a slot is located between the top wall and the bottom wall. A groove is recessed from the rear end of the top wall to the front, and the groove extends upward through the top wall. The first cable has a first segment and a second segment in sequence in the front-rear direction, and in the front-rear direction, the first segment is closer to the first electrical connector than the second segment. The first segment is at least partially received in the groove, and in the front-rear direction, the projection of the first segment and the projection of the top wall at least partially overlap. The second segment is located above the top wall.

[0007] Furthermore, the first electrical connector also includes a first body to house the first terminal, a first contact portion extending downward from the first body and elastically abutting against the first circuit board, and second terminals arranged in two rows facing each other, with the two rows of second terminals located on the upper and lower sides of the insertion portion respectively, and each second contact portion exposed in the slot and elastically abutting against the insertion portion.

[0008] Furthermore, a locking fastener is provided on each of the left and right sides of the first electrical connector to lock the first electrical connector to the first circuit board; a notch is provided on each of the left and right sides of the plug portion; a latching member is provided on each of the left and right sides of the second electrical connector, each latching member having a latching part. When the second electrical connector is installed into the plug portion, the latching part is received in the notch; and along the left and right direction, the locking fastener and the notch on the same side of the plug portion are staggered.

[0009] Furthermore, the plug portion is provided with a second conductive area, and the second conductive area is provided with a plurality of second contact pads to make electrical contact with a plurality of second contact portions respectively; along the front-back direction, the notch and the second conductive area are staggered.

[0010] Furthermore, the first electrical connector has an upper cover disposed above a plurality of first terminals. The upper cover includes a metal plate and a plastic part injection molded on the metal plate. At least one fastener passes through the metal plate and the first circuit board to secure the first electrical connector to the first circuit board.

[0011] Furthermore, the metal plate has a locking part on each of its left and right sides; a third electrical connector is mounted on the upper surface of the second circuit board, and the third electrical connector makes upward electrical contact with the lower surface of the first circuit board to connect the first circuit board to the second circuit board; a metal frame is mounted on the second circuit board and surrounds the outside of the third electrical connector; an extension is connected to the side of the metal frame, and along the vertical direction, the projection of the extension and the projection of the locking part at least partially overlap; two locking fasteners pass through the locking part, the first circuit board and the extension respectively along the vertical direction.

[0012] Furthermore, a third electrical connector is mounted on the upper surface of the second circuit board. The third electrical connector includes an insulating body and two protrusions extending upward from the insulating body. The two protrusions are arranged opposite each other from left to right, and there is a first gap between the two protrusions in the left-right direction. The first circuit board has a plug-in portion, a first region, and a second region in sequence from front to back. In the left-right direction, the second region has a second width. The second region is mounted on the upper side of the third electrical connector. The second width is greater than the first gap, and in the front-back direction, the projection of the protrusion and the projection of the second region at least partially overlap. The second region and the protrusion are limited in the front-back direction.

[0013] Furthermore, along the left-right direction, the first region has a first width, and the first electrical connector is mounted on the upper surface of the first region. The first width is less than the first pitch. Viewed along the front-back direction, the first region is located between two protrusions, and the protrusions and the first region limit each other along the left-right direction.

[0014] Furthermore, the first circuit board has a first conductive area and a second conductive area. The first conductive area has a plurality of first contact pads to electrically contact a plurality of first contact portions respectively, and the second conductive area has a plurality of second contact pads to electrically contact a plurality of second contact portions respectively. Along the left-right direction, the first conductive area has a third width, and the second conductive area has a fourth width. The fourth width is greater than or equal to the third width, and when viewed along the front-back direction, the first conductive area and the second conductive area are aligned.

[0015] Compared with the prior art, the present invention has the following beneficial effects: Compared with the conventional technical solutions in the background art, the present solution sets the first contact part to contact the first circuit board downward, the second contact part to be exposed in the slot and electrically connected to the plug-in part, and the second electrical connector is located below the first cable. Along the front-back direction, the projection of the first electrical connector and the projection of the second electrical connector overlap. Thus, under the premise of ensuring that the height of the first electrical connector installed on the upper surface of the first circuit board is constant along the vertical direction, the second electrical connector can be added to connect more cables for signal transmission, thereby increasing the number of high-speed signal transmission channels within the same height space. [Attached Image Description]

[0016] Figure 1 This is an exploded perspective view of the electronic module of this utility model;

[0017] Figure 2 for Figure 1 A 3D diagram showing the completed installation of the electronic modules.

[0018] Figure 3 for Figure 1 Exploded perspective view of the first electrical connector in the middle;

[0019] Figure 4 for Figure 1 Exploded perspective view of the second electrical connector;

[0020] Figure 5 for Figure 2 A top view of the first and second electrical connectors after they have been installed with the chip module;

[0021] Figure 6 for Figure 5 Sectional view along AA;

[0022] Figure 7 for Figure 5 Sectional view along BB;

[0023] Figure 8 This is a three-dimensional schematic diagram showing the chip module and the third electrical connector after installation in this utility model.

[0024] Figure 9 This is a top view of the chip module and the third electrical connector after installation in this utility model.

[0025] Explanation of reference numerals in the accompanying drawings for the specific implementation methods:

[0026]

[0027]

Detailed Implementation Methods

[0028] To facilitate a better understanding of the purpose, structure, features, and effects of this utility model, the present utility model will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0029] like Figures 1 to 2 As shown in the figure, the electronic module of this utility model is defined by a front-back direction, a left-right direction perpendicular to the front-back direction, and a top-bottom direction. For ease of understanding of the figure, the forward direction in the front-back direction is the positive direction of the X-axis, the leftward direction in the left-right direction is the positive direction of the Y-axis, and the upward direction in the top-bottom direction is the positive direction of the Z-axis.

[0030] like Figure 1 As shown, the electronic module of this utility model includes a chip module M, a first electrical connector 2, a second electrical connector 4 and a third electrical connector 5 electrically connected to the chip module M, a second circuit board 6 located below the chip module M, and the third electrical connector 5 mounted on the upper surface of the second circuit board 6 to electrically connect the second circuit board 6 to the chip module M.

[0031] like Figure 8 and Figure 9As shown, the chip module M includes a chip C and a first circuit board 1 located below the chip C, and the chip C and the first circuit board 1 are electrically connected. The first circuit board 1 has, from front to back, a connector 13, a first region 11, and a second region 12. A first electrical connector 2 is mounted on the upper surface of the first region 11, a second electrical connector 4 is mounted on the connector 13, the chip C is mounted on the upper surface of the second region 12, and a third electrical connector 5 is electrically in contact with the lower surface of the second region 12. Along the left-right direction, the first region 11 has a first width W1, and the second region 12 has a second width W2. In this embodiment, the second width W2 is greater than the first width W1, and the first width W1 is greater than the width of the connector 13 along the left-right direction. In other embodiments, depending on the number of terminals of the first electrical connector 2 and the second electrical connector 4, and the size variations of the first and second connectors, the first width W1 may also be greater than the second width W2, and the width of the connector 13 along the left-right direction may also be greater than the first width W1.

[0032] The upper surface of the first region 11 has a first conductive region 111 for electrical contact with the first electrical connector 2, and the first conductive region 111 has a plurality of first contact pads 111a. Along the left-right direction, the first conductive region 111 has a third width W3. The plug-in portion 13 has a second conductive region 131 for electrical contact with the second electrical connector 4, and the second conductive region 131 has a plurality of second contact pads 131a, which are located on the upper and lower surfaces of the plug-in portion 13, respectively. Along the front-back direction, the first conductive region 111 and the second conductive region 131 are aligned. In this embodiment, the third width W3 is greater than the fourth width W4; in other embodiments, the third width W3 may be equal to or less than the fourth width W4. The plug-in portion 13 has a notch 132 on each of its left and right sides. In this embodiment, the two notches 132 are aligned along the left-right direction and penetrate the plug-in portion 13 along the left-right direction. Furthermore, along the front-to-back direction, the notch 132 and the second guide area 131 are staggered.

[0033] like Figure 3 and Figure 7As shown, the first electrical connector 2 includes a first body 21, a plurality of first terminals 22 housed in the first body 21, and a top cover 23 covering the plurality of first terminals 22. Each first terminal 22 has a first contact portion 221 and a first wiring portion 222. The first contact portion 221 extends downward from the first body 21 and elastically abuts against a first contact pad 111a. The first wiring portion 222 protrudes upward from the first body 21 and is electrically connected to a first cable 8. The first cable 8 extends forward in the front-back direction and extends forward out of the first electrical connector 2. The first cable 8 has a first segment 81 and a second segment 82. In the front-back direction, the first segment 81 is closer to the first electrical connector 2 than the second segment 82, and in the vertical direction, the first segment 81 is closer to the first circuit board 1 than the second segment 82. The top cover 23 includes a metal plate 231 and a plastic part 232 injection-molded onto the metal plate 231. A locking part 231a is provided on each of the left and right sides of the metal plate 231. The first body 21 is located between the two locking parts 231a in the left-right direction. Two locking fasteners 3 pass through the locking parts 231a and the first region 11 in the up-down direction to mount the first electrical connector 2 to the first region 11. Figure 9 As shown, along the left-right direction, the locking fastener 3 and the notch 132 on the same side of the insertion part 13 are staggered.

[0034] like Figure 4 , Figure 5 and Figure 7 As shown, the second electrical connector 4 includes a second body, a plurality of second terminals 42 housed within the second body, and a housing 43 fitted around the outer periphery of the second body. The plurality of second terminals 42 are arranged in two opposing rows, located above and below the insertion portion 13, respectively. Each second terminal 42 has a second contact portion 421 and a second wiring portion 422. The second contact portion 421 extends out of the second body 41 to electrically contact the second contact pad 131a, and the second wiring portion 422 exposes the second body 41 to electrically connect to the second cable 9. The housing 43 has a top wall 431 above the insertion portion 13, a bottom wall 432 below the insertion portion 13, and two side walls 433 connecting the top wall 431 and the bottom wall 432, located on the left and right sides of the insertion portion 13, respectively. A slot 435 is recessed forward from the housing 43, located between the top wall 431 and the bottom wall 432 in the vertical direction. The insertion part 13 is inserted into the slot 435 in the front-to-back direction, and the second contact part 421 is exposed in the slot 435 and elastically abuts against the second contact pad 131a.

[0035] like Figure 4 and Figure 6As shown, a groove 434 is recessed from the rear end of the top wall 431, extending upwards through the top wall 431. A first segment 81 of the first cable 8 is partially received in the groove 434, and the projection of the top wall 431 and the projection of the first segment 81 overlap in the front-rear direction. A second segment 82 of the first cable 8 is located above the top wall 431. The projections of the first electrical connector 2 and the second electrical connector 4 overlap in the front-rear direction. Two latching members 44 are respectively fixed to the two side walls 433. Each latching member 44 has a latching portion 441, which is received within a notch 132 to mutually limit the insertion portion 13 in the front-rear direction, thereby installing the second electrical connector 4 into the insertion portion 13. In this embodiment, the second electrical connector 4 is a slot-type connector; in other embodiments, the second electrical connector 4 may also be a crimp-type connector or other types of electrical connectors.

[0036] like Figure 1 , Figure 8 and Figure 9 As shown, the third electrical connector 5 has an insulating body 51 and a plurality of third terminals 52 housed within the insulating body 51. Two protrusions 511 extend upward from the insulating body 51, and the two protrusions 511 are arranged opposite each other from left to right, with a first gap D1 between them in the left-right direction. The second region 12 is mounted above the third electrical connector 5 and is electrically connected to the third terminals 52. In the front-back direction, the projections of the protrusions 511 and the second region 12 partially overlap, and in the left-right direction, the second width W2 is greater than the first gap D1. The second region 12 and the protrusions 511 are mutually positioned in the front-back direction, which facilitates accurate contact between the second region 12 and the third electrical connector 5. Viewed in the front-back direction, the first region 11 is located between the two protrusions 511, and the first width W1 is less than the first spacing D1. This is beneficial because when the first circuit board 1 is installed above the third electrical connector 5, it does not affect the mutual positioning of the second region 12 and the protrusions 511 in the front-back direction. The first region 11 can also extend smoothly from between the two protrusions 511 for the installation of the first electrical connector 2. Furthermore, in the left-right direction, the two protrusions 511 can also limit the first region 11, which also facilitates the accurate installation of the first electrical connector 2 and the first region 11 in the future.

[0037] like Figure 1 and Figure 6As shown, a metal frame 7 is mounted on the upper surface of the second circuit board 6 and surrounds the outer periphery of the third electrical connector 5. In this embodiment, an extension 71 is integrally formed extending from the side of the metal frame 7. In other embodiments, the extension 71 can also be connected to the side of the metal frame 7 by welding or other means. Along the vertical direction, the projection of the extension 71 and the projection of the locking part 231a overlap. When the first electrical connector 2 is installed in the first region 11, the locking part 3 passes through the locking part 231a, the first circuit board 1, and the extension 71 along the vertical direction, so that when the first electrical connector 2 is locked to the first circuit board 1, the locking part 231a and the extension 71 located on the upper and lower sides of the first circuit board 1 respectively support the first circuit board 1 along the vertical direction, preventing the first circuit board 1 from being subjected to downward pressure and thus deformed when the first electrical connector 2 is fixed to the upper surface of the first circuit board 1.

[0038] In summary, the electronic module of this utility model has the following beneficial effects:

[0039] 1. In order to transmit more high-speed signals, compared with the conventional technical solutions in the background art, this solution sets the first contact part 221 to contact the first circuit board 1 downward, the second contact part 421 to be exposed in the slot 435 and electrically connected to the plug-in part 13, and the second electrical connector 4 is located below the first cable 8. Along the front-back direction, the projection of the first electrical connector 2 and the projection of the second electrical connector 4 overlap. Thus, while ensuring that the height of the first electrical connector 2 installed on the upper surface of the first circuit board 1 is constant in the vertical direction, the second electrical connector 4 can be added to connect more cables for signal transmission, thereby increasing the number of high-speed signal transmission channels within the same height space.

[0040] 2. Compared to the original single first electrical connector 2 serving as a channel for transmitting high-speed signals, by setting the first segment 81 partially housed in the groove 434, and along the front-back direction, the projection of the first segment 81 overlaps with the projection of the top wall 431, and the second segment 82 is located above the top wall 431, so that within the same board height, in addition to accommodating the original first cable 8, a second electrical connector 4 can also be accommodated for transmitting high-speed signals. This allows for the connection of more cable connectors on the first circuit board 1, increasing the high-speed signal transmission channel, given the limited height of the cable connectors above the first circuit board 1.

[0041] 3. When both the first contact portion 221 and the second contact portion 421 are soldered and fixed to the first circuit board 1, since the first terminal 22 and the second terminal 42 are respectively connected to the first cable 8 and the second cable 9, and the second electrical connector 4 is located below the first cable 8, it is not only difficult to observe the soldering situation between the first contact portion 221, the second contact portion 421 and the first circuit board 1, making it difficult to ensure a firm soldering, but also, since the first circuit board 1 also has a chip C, it is difficult to ensure that the chip C will not be damaged during high-temperature soldering. Therefore, by setting the first contact portion 221 and the first circuit board 1... The elastic abutment, and the second contact portion 421 also elastically abuts against the plug portion 13, reduces the difficulty of electrically connecting the first terminal 22 and the second terminal 42 to the first circuit board 1, and reduces the risk of damage to the chip C, thus reducing the cost of damage. In addition, by setting two rows of second terminals 42 respectively on the upper and lower sides of the plug portion 13, and each second contact portion 421 is exposed in the slot 435 and elastically abuts against the plug portion 13, the upper and lower sides of the plug portion 13 are respectively abutted by the upper and lower rows of second contact portions 421, which is more conducive to the plug portion 13 being subjected to uniform force in the vertical direction and avoiding deformation.

[0042] 4. By setting the locking fastener 3 and notch 132 on the same side of the plug-in portion 13 in the left-right direction, the fixing positions of the first electrical connector 2 and the first circuit board 1 and the fixing positions of the second electrical connector 4 and the plug-in portion 13 are not only staggered in the front-back direction, but also staggered in the left-right direction. This avoids the first electrical connector 2 and the first circuit board 1 and the second electrical connector 4 and the plug-in portion 13 being concentrated in the same area of ​​the first circuit board 1 in the left-right direction when the locking fastener 3 and notch 132 on the same side of the plug-in portion 13 are aligned in the left-right direction, thus avoiding excessive force concentration on the first circuit board 1 and causing deformation.

[0043] 5. By setting the notch 132 and the second guide area 131 to be staggered along the front-back direction, the fixed position of the buckle part 441 and the plug part 13 and the contact position of the second contact part 421 and the plug part 13 are staggered along the front-back direction, so as to avoid the same area of ​​the plug part 13 being subjected to force in both the up-down direction and the front-back direction at the same time, thereby making the plug part 13 less prone to deformation.

[0044] 6. By aligning the first conductive area 111 and the second conductive area 131 when viewed from the front-back direction, and setting the fourth width W4 to be greater than or equal to the third width W3, the positions of the first conductive area 111 and the second conductive area 131 on the first circuit board 1 are concentrated as much as possible, reducing the area occupied. This facilitates the direct connection of the internal traces of the first circuit board 1 to the first contact pad 111a and the second contact pad 131a in the front-back direction, while also providing more free area on the first circuit board 1, leaving more space for subsequent chip C placement and structural optimization.

Claims

1. An electronic module, characterized in that, include: A chip module includes a chip and a first circuit board disposed below the chip; A first electrical connector is mounted on the upper surface of a first circuit board. The first electrical connector has multiple first terminals. Each first terminal has a first contact portion and a first wiring portion. The first contact portion contacts the first circuit board downwards. The first wiring portion is used to connect a first cable. The first cable extends out of the first electrical connector in the front-back direction. A second electrical connector includes a slot and a plurality of second terminals, each second terminal having a second contact portion and a second wiring portion for connecting a second cable; an insertion portion extends from the edge of a first circuit board to form a plug portion located on the front side of the first electrical connector, the plug portion being inserted into the slot, the second contact portion being exposed in the slot and electrically connected to the plug portion, and the second electrical connector being located below the first cable, with the projections of the first electrical connector and the second electrical connector at least partially overlapping in the front-back direction.

2. The electronic module as described in claim 1, characterized in that, include: The second electrical connector has a housing with a top wall and a bottom wall located on the upper and lower sides of the first circuit board, respectively. A slot is located between the top wall and the bottom wall in the vertical direction. A groove is recessed from the rear end of the top wall to the front, and the groove extends upward through the top wall. The first cable has a first segment and a second segment in the front-rear direction, and the first segment is closer to the first electrical connector than the second segment in the front-rear direction. The first segment is at least partially received in the groove, and the projection of the first segment and the projection of the top wall at least partially overlap in the front-rear direction. The second segment is located above the top wall.

3. The electronic module as described in claim 1, characterized in that, include: The first electrical connector also includes a first body to house a first terminal, a first contact portion extending downward from the first body and elastically abutting against a first circuit board, and a second terminal arranged in two rows facing each other, with the two rows of second terminals located on the upper and lower sides of the insertion portion respectively, and each second contact portion exposed in the slot and elastically abutting against the insertion portion.

4. The electronic module as described in claim 1, characterized in that, include: The first electrical connector has a locking fastener on each of its left and right sides to secure it to the first circuit board; the plug portion has a notch on each of its left and right sides, and the second electrical connector has a latching member on each of its left and right sides. Each latching member has a latching part. When the second electrical connector is installed into the plug portion, the latching part is received in the notch; and along the left and right direction, the locking fasteners and notches on the same side of the plug portion are staggered.

5. The electronic module as described in claim 4, characterized in that, include: The plug portion is provided with a second conductive area, and the second conductive area is provided with a plurality of second contact pads to make electrical contact with a plurality of second contact portions respectively; Along the front-to-back direction, the notch and the second guide area are staggered.

6. The electronic module as described in claim 1, characterized in that, include: The first electrical connector has an upper cover disposed above a plurality of first terminals. The upper cover includes a metal plate and a plastic part injection molded on the metal plate. At least one fastener passes through the metal plate and the first circuit board to secure the first electrical connector to the first circuit board.

7. The electronic module as described in claim 6, characterized in that, include: The metal plate has a locking part on each of its left and right sides; a third electrical connector is mounted on the upper surface of the second circuit board and electrically contacts the lower surface of the first circuit board to connect the first circuit board to the second circuit board; a metal frame is mounted on the second circuit board and surrounds the outside of the third electrical connector; an extension is connected to the side of the metal frame and extends in the vertical direction; the projection of the extension and the projection of the locking part at least partially overlap; two fasteners pass through the locking part, the first circuit board and the extension respectively in the vertical direction.

8. The electronic module as described in claim 1, characterized in that, include: A third electrical connector is mounted on the upper surface of a second circuit board. The third electrical connector includes an insulating body and two protrusions extending upward from the insulating body. The two protrusions are arranged opposite each other from left to right and have a first gap between them in the left-right direction. The first circuit board has a plug-in portion, a first region, and a second region in sequence from front to back. The second region has a second width in the left-right direction. The second region is mounted on the upper side of the third electrical connector. The second width is greater than the first gap. In the front-back direction, the projections of the protrusions and the projections of the second region at least partially overlap. The second region and the protrusions are limited in the front-back direction.

9. The electronic module as described in claim 8, characterized in that, include: Along the left-right direction, the first region has a first width, and the first electrical connector is mounted on the upper surface of the first region. The first width is less than the first pitch. Viewed along the front-back direction, the first region is located between two protrusions, and the protrusions and the first region limit each other along the left-right direction.

10. The electronic module as described in claim 1, characterized in that, include: The first circuit board has a first conductive area and a second conductive area. The first conductive area has a plurality of first contact pads to electrically contact a plurality of first contact portions respectively. The second conductive area has a plurality of second contact pads to electrically contact a plurality of second contact portions respectively. Along the left-right direction, the first conductive area has a third width and the second conductive area has a fourth width. The fourth width is greater than or equal to the third width. And when viewed along the front-back direction, the first conductive area and the second conductive area are aligned.

Images