Electronic device

Abstract

The invention discloses electronic equipment. The electronic equipment comprises a frame body, a fingerprint module, a first circuit board, a second circuit board and a first flexible circuit board, the first circuit board, the second circuit board and the first flexible circuit board are all arranged on the first side of the frame body, and the first circuit board is electrically connected with the second circuit board through the first flexible circuit board; the fingerprint module comprises a module body and a second flexible circuit board, the module body is arranged on the second side of the frame body, the first end of the second flexible circuit board is electrically connected with the module body, the second end of the second flexible circuit board penetrates through the first through hole of the frame body and is electrically connected with the first flexible circuit board, and a connection point position does not need to be reserved on the first circuit board. Therefore, the size of the first circuit board can be further reduced, and the space utilization rate can be improved.

Description

Technical Field

[0001] This application relates to the field of electronic equipment technology, and more particularly to an electronic device. Background Technology

[0002] With the rapid development of electronic device technology, battery capacity has become an important parameter for measuring the performance of electronic devices. Increasing battery capacity can be achieved by reducing the space occupied by other components inside the electronic device, such as reducing the size of the motherboard, thereby providing more installation space for the battery and allowing for the installation of a larger battery inside the electronic device.

[0003] In related technologies, electronic devices consist of a frame, a fingerprint module, a battery, a motherboard, and a sub-board. The fingerprint module is mounted on the first side of the frame, while the battery, motherboard, and sub-board are mounted on the second side. During actual assembly, the fingerprint module needs to be connected to the sub-board via a flexible circuit board, and then transferred to the motherboard via the sub-board. Because the sub-board needs to have reserved connection points for the fingerprint module, its size is difficult to reduce, resulting in a larger space occupied by the sub-board and hindering space utilization. Summary of the Invention

[0004] This application discloses an electronic device to solve the problem that the size of circuit boards is difficult to reduce in the related art.

[0005] In order to solve the above technical problems, this application is implemented as follows: This application discloses an electronic device, which includes a frame, a fingerprint module, a first circuit board, a second circuit board, and a first flexible circuit board. The frame has a first side and a second side facing away from each other, and a first through hole connecting the first side and the second side. The first circuit board, the second circuit board and the first flexible circuit board are all disposed on the first side of the frame, and the first circuit board is electrically connected to the second circuit board through the first flexible circuit board. The fingerprint module includes a module body and a second flexible circuit board. The module body is disposed on the second side of the frame. The first end of the second flexible circuit board is electrically connected to the fingerprint module, and the second end of the second flexible circuit board passes through the first through hole and is electrically connected to the first flexible circuit board.

[0006] The technical solution adopted in this application can achieve the following technical effects: The electronic device disclosed in this application improves upon related technologies. The disclosed electronic device includes a frame, a fingerprint module, a first circuit board, a second circuit board, and a first flexible circuit board. The first circuit board is electrically connected to the second circuit board via the first flexible circuit board. The fingerprint module includes a module body and a second flexible circuit board. A first end of the second flexible circuit board is electrically connected to the module body, and a second end of the second flexible circuit board passes through a first through-hole and is electrically connected to the first flexible circuit board. Since the module body can be directly electrically connected to the second circuit board via the second flexible circuit board, the first flexible circuit board, and the second circuit board, there is no need to reserve connection points on the first circuit board. This allows the size of the first circuit board to be further reduced, thereby freeing up more space and improving the overall space utilization of the device. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the assembly structure of the display module and the fingerprint module disclosed in the embodiments of this application; Figure 2 This is a schematic diagram of the frame structure disclosed in the embodiments of this application; Figure 3 This is one of the structural schematic diagrams of the first flexible circuit board disclosed in the embodiments of this application; Figure 4 This is a second schematic diagram of the structure of the first flexible circuit board disclosed in the embodiments of this application; Figure 5 This is a schematic diagram of the structure of the first circuit board disclosed in an embodiment of this application; Figure 6 This is one of the enlarged partial views of the electronic device disclosed in the embodiments of this application; Figure 7 This is a second enlarged view of a portion of the electronic device disclosed in an embodiment of this application; Figure 8 This is the third enlarged view of a portion of the electronic device disclosed in the embodiments of this application.

[0008] Explanation of reference numerals in the attached figures: 110-Frame, 111-First through hole, 112-Positioning post, 113-Second through hole, 114-Limiting skeleton, 120-Fingerprint module, 121-Module body, 122-Second flexible circuit board, 1221-Second electrical connection part, 130-First circuit board, 131-Fourth electrical connection part, 140-Second circuit board, 150-First flexible circuit board, 151-First electrical connection part, 152-Third electrical connection part, 153-Fifth electrical connection part, 154-Adhesive area, 155-Positioning hole, 156-Extension part, 157-Flexible body, 158-Connection part, 159-Extension part, 160-Display module, 161-Display body, 162-Third flexible circuit board. Detailed Implementation

[0009] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0010] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0011] The technical solutions disclosed in the various embodiments of this application are described in detail below with reference to the accompanying drawings.

[0012] Please refer to Figures 1 to 8 This application discloses an electronic device, which can be a mobile phone, tablet computer, laptop computer, wearable device, vehicle device, etc. This application does not limit the specific type of electronic device.

[0013] The aforementioned electronic device may include a frame 110, a fingerprint module 120, a first circuit board 130, a second circuit board 140, and a first flexible circuit board 150. The frame 110 forms the structural basis of the electronic device. The frame 110 has a first side and a second side facing away from each other. A first through hole 111 is provided in the frame 110, which passes through the first side and the second side of the frame 110. The first circuit board 130, the second circuit board 140, and the first flexible circuit board 150 are all located on the first side of the frame 110. The first circuit board 130 can be a sub-board of the electronic device, and the second circuit board 140 can be the mainboard of the electronic device. Both the first circuit board 130 and the second circuit board 140 can be PCBs (Printed Circuit Boards). The first circuit board 130 and the second circuit board 140 can be spaced apart, with a battery mounting area reserved in between. The first circuit board 130 is electrically connected to the second circuit board 140 through the first flexible circuit board 150. The first flexible circuit board 150 can be arranged at the bottom of the battery mounting area. Part of the first flexible circuit board 150 can be attached to the surface of the frame 110. The first flexible circuit board 150 can be an FPC (Flexible Printed Circuit).

[0014] The fingerprint module 120 may include a module body 121 and a second flexible circuit board 122. The second flexible circuit board 122 may be an FPC. The module body 121 is disposed on the second side of the frame 110. The first end of the second flexible circuit board 122 is electrically connected to the module body 121, and the second end of the second flexible circuit board 122 passes through the first through hole 111 of the frame 110 and is electrically connected to the first flexible circuit board 150. In other words, the module body 121 can be electrically connected to the second circuit board 140 in sequence through the second flexible circuit board 122, the first flexible circuit board 150, and the second circuit board 140. Since the module body 121 does not need to use the first circuit board 130 as a medium to transfer to the second circuit board 140, the module body 121 does not need to be electrically connected to the first circuit board 130 through the second flexible circuit board 122. Therefore, there is no need to reserve connection points for the second flexible circuit board 122 on the first circuit board 130, thereby saving the layout area of ​​the first circuit board 130 and reducing the size of the first circuit board 130.

[0015] It should be noted that in the relevant technology, the module body 121 is electrically connected to the second circuit board 140 through the second flexible circuit board 122, the first circuit board 130, and the first flexible circuit board 150 in sequence. The first circuit board 130 actually acts as a conductor medium in the whole circuit. In the relevant technology, the first circuit board 130 can be an adapter board. Without the first circuit board 130 as an adapter, the module body 121 can still ensure the normal transmission of electrical signals by using the transmission path of the second flexible circuit board 122, the first flexible circuit board 150, and the second circuit board 140. The second circuit board 140 is provided with a processing chip, which can process the fingerprint information detected by the fingerprint module 120 and perform fingerprint unlocking.

[0016] As can be seen from the above, the electronic device disclosed in this application improves the relevant technology. Since the module body 121 can be directly electrically connected to the second flexible circuit board 122, the first flexible circuit board 150 and the second circuit board 140, there is no need to reserve connection points in the first circuit board 130. This allows the size of the first circuit board 130 to be further reduced, thereby freeing up more space to install a larger battery, which is beneficial to increasing the battery capacity.

[0017] As mentioned above, Figures 3 to 4 As shown, the first flexible circuit board 150 has a first electrical connection portion 151 at its end near the first circuit board 130, and the second flexible circuit board 122 has a second electrical connection portion 1221 at its second end. The first electrical connection portion 151 and the second electrical connection portion 1221 can be electrically connected by means of welding, conductive bonding, etc. In an optional embodiment of this application, to improve the assembly and disassembly efficiency of the first electrical connection portion 151 and the second electrical connection portion 1221, the first electrical connection portion 151 and the second electrical connection portion 1221 can be assembled by a detachable connection. Specifically, the first electrical connection portion 151 and the second electrical connection portion 1221 can be assembled by magnetic attraction or by snap-fit ​​connection. Specifically, the first electrical connection portion 151 and the second point connection portion 151 include: board-to-board connectors (BTB), socket plugs, etc.

[0018] The first circuit board 130 can be mounted and fixed via a bracket structure on the frame 110. When the first circuit board 130 is mounted on the first side of the frame 110, there is a mounting gap between the first circuit board 130 and the frame 110. The first electrical connection part 151 can extend into this mounting gap, that is, the first electrical connection part 151 is located between the first circuit board 130 and the frame 110. To improve the stability of the first electrical connection part 151, the back side of the first electrical connection part 151 can be connected to the frame 110. For example, adhesive can be applied to the back side of the first electrical connection part 151 to bond the first electrical connection part 151 to the frame 110, or snap-fit ​​structures can be provided on the first electrical connection part 151 and the frame 110 respectively to snap the first electrical connection part 151 to the frame 110. It should be noted that the first electrical connection part 151 has a front and a back side facing away from each other. The front side of the first electrical connection part 151 is used to mate with the second electrical connection part 1221, and the back side of the first electrical connection part 151 is connected to the frame 110.

[0019] like Figures 6 to 8 As shown, since the back of the first electrical connection 151 is connected to the frame 110, it can provide a relatively stable installation environment for the second electrical connection 1221. After the second end of the second flexible circuit board 122 passes through the first through hole 111, it can be bent in the aforementioned installation gap, thereby allowing the first electrical connection 151 and the second electrical connection 1221 to mate, so as to conduct electricity between the second flexible circuit board 122 and the first flexible circuit board 150. The first circuit board 130 is covered on the first electrical connection 151 and the second electrical connection 1221. In other words, the whole formed by the first electrical connection 151 and the second electrical connection 1221 after mating is disposed between the first circuit board 130 and the frame 110.

[0020] In addition, when the second electrical connection 1221 mates with the first electrical connection 151, the second electrical connection 1221 is relatively close to or even in contact with the back of the first circuit board 130. By adjusting the size of the aforementioned mounting gap, the back of the first circuit board 130 can apply a certain pressure to the second electrical connection 1221, which helps to improve the reliability and stability of the assembly between the first electrical connection 151 and the second electrical connection 1221. It should be noted that the back of the first circuit board 130 is the surface of the first circuit board 130 facing the frame 110.

[0021] To prevent the first flexible circuit board 150 from twisting or shifting on the frame 110, an adhesive area 154 can be provided on the surface of the first flexible circuit board 150 facing the frame 110. The adhesive area 154 can be bonded to the first side of the frame 110, thereby improving the reliability of the installation of the first flexible circuit board 150.

[0022] like Figure 3 , Figure 4 , Figures 6 to 8 As shown, the first flexible circuit board 150 may include a flexible body 157, a connecting portion 158, and an extension portion 159. The extension portion 159 is connected to the flexible body 157 via the connecting portion 158, and a first electrical connection portion 151 is disposed on the extension portion 159. The flexible body 157, the connecting portion 158, and the extension portion 159 may be an integral structure. The extension portion 159 can extend into the mounting gap formed between the frame 110 and the first circuit board 130. The extension portion 159 is provided with the first electrical connection portion 151, and the back side of the extension portion 159 can be bonded to the frame 110. It should be noted that the back side of the extension portion 159 is the surface of the extension portion 159 facing the frame 110.

[0023] like Figure 4 As shown, to facilitate the installation of the first circuit board 130, a limiting frame 114 is provided on the first side of the frame 110. The frame 114 protrudes from the surface of the frame 110 and forms an installation area on the surface of the frame 110 for accommodating the first circuit board 130. When the first circuit board 130 is located in the aforementioned installation area, the limiting frame 114 can engage with the first circuit board 130 to prevent displacement and improve installation stability. Considering that the first flexible circuit board 150 needs to cross the limiting frame 114, to improve the installation stability of the first flexible circuit board 150, the connecting portion 158 of the first flexible circuit board 150 can be bent at the limiting frame 114. Furthermore, the connecting portion 158 is respectively attached to both sides of the limiting frame 114, thereby reducing the installation gap between the first flexible circuit board 150 and the limiting frame 114. At the same time, the limiting frame 114 can also perform a certain limiting function on the first flexible circuit board 150 through the connecting portion 158, preventing problems such as twisting or positional displacement of the first flexible circuit board 150.

[0024] In addition, such as Figures 6 to 8As shown, to ensure the first flexible circuit board 150 is accurately placed in a preset position, a positioning post 112 can be provided on the first side of the frame 110, and a positioning hole 155 can be provided on the first flexible circuit board 150. The positioning post 112 can pass through the positioning hole 155 to achieve the positioning and installation of the first flexible circuit board 150. Of course, the limiting cooperation between the positioning post 112 and the positioning hole 155 can also prevent the first flexible circuit board 150 from twisting or shifting on the frame 110, further improving the reliability of the installation of the first flexible circuit board 150. The positioning hole 155 can be formed on the surface of the first flexible circuit board 150. Of course, to avoid interference with the electrical components on the first flexible circuit board 150, a protruding extension 156 can be provided on the edge of the first flexible circuit board 150, and the aforementioned positioning hole 155 can be formed on the extension 156. In some embodiments, the extension 156 is provided in the circumferential direction of the extension 159, which is more conducive to fixing the extension 159 and the middle frame.

[0025] like Figures 3 to 5 As shown, to facilitate the assembly of the first flexible circuit board 150 with the first circuit board 130 and the second circuit board 140, a third electrical connection portion 152 can be provided at the end of the first flexible circuit board 150 near the first circuit board 130. Correspondingly, the first circuit board 130 is provided with a fourth electrical connection portion 131. The third electrical connection portion 152 and the fourth electrical connection portion 131 are also assembled in a detachable connection manner. A fifth electrical connection portion 153 is provided at the end of the first flexible circuit board 150 near the second circuit board 140, and the second circuit board 140 is provided with a sixth electrical connection portion. The fifth electrical connection portion 153 and the sixth electrical connection portion are also assembled in a detachable connection manner. This design improves the assembly efficiency of the electronic device and facilitates individual disassembly and repair in case of a malfunction in any of the first flexible circuit board 150, the first circuit board 130, or the second circuit board 140. It is understood that the third electrical connection portion 152 and the fourth electrical connection portion 131 are used to connect the first flexible circuit board 150 to the first circuit board 130 to transmit electrical signals. The first electrical connection portion 151 and the second electrical connection portion 1221 are used to transmit the electrical signal of the fingerprint module 120 to the first flexible circuit board 150, thereby transmitting the signal of the fingerprint module 120 to the second circuit board 140.

[0026] like Figure 7As shown, the first electrical connection portion 151 and the third electrical connection portion 152 are offset along the thickness direction of the first flexible circuit board 150. With the frame 110 as a reference, the first electrical connection portion 151 is positioned lower than the third electrical connection portion 152; in other words, the first electrical connection portion 151 is closer to the frame 110. The first electrical connection portion 151 and the third electrical connection portion 152 face opposite directions. The first electrical connection portion 151 faces the side of the first circuit board 130 facing the frame 110, while the third electrical connection portion 152 faces the side of the first circuit board 130 away from the frame 110. The first electrical connection portion 151 can extend into the aforementioned mounting gap, at which point it is located between the first circuit board 130 and the frame 110. The third electrical connection 152 is positioned higher and can extend to the side of the first circuit board 130 opposite to the frame 110. Since the fourth electrical connection 131 is located on the side of the first circuit board 130 opposite to the frame 110, the third electrical connection 152 and the fourth electrical connection 131 can be connected. It is understood that after assembly, after the first electrical connection 151 and the second electrical connection 1221 are inserted, they are located between the first circuit board 130 and the middle frame. The first circuit board 130 can be pressed against the overall structure formed by the combination of the first electrical connection 151 and the second electrical connection 1221. The third electrical connection 152 is combined with the fourth electrical connection 131 and located on the side of the first circuit board 130 opposite to the middle frame. The first circuit board 130 eliminates the need for space for the second electrical connection 1221 and the first electrical connection 151, further reducing its area and volume, freeing up more internal space for other components, and improving space utilization.

[0027] In one optional embodiment of this application, one of the first electrical connection portion 151 and the second electrical connection portion 1221 is a plug and the other is a socket, so that the first electrical connection portion 151 and the second electrical connection portion 1221 are plugged in and engaged; and / or, one of the third electrical connection portion 152 and the fourth electrical connection portion 131 is a plug and the other is a socket, so that the third electrical connection portion 152 and the fourth electrical connection portion 131 are plugged in and engaged; and / or, one of the fifth electrical connection portion 153 and the sixth electrical connection portion is a plug and the other is a socket, so that the fifth electrical connection portion 153 and the sixth electrical connection portion are plugged in and engaged.

[0028] Using the above-mentioned plug and socket combination can improve the assembly efficiency of electronic devices and facilitate the individual disassembly and repair of components.

[0029] In one optional embodiment of this application, the electronic device further includes a display module 160, which can be directly electrically connected to the second circuit board 140 via the first flexible circuit board 150, or can be transferred to the second circuit board 140 via the first circuit board 130.

[0030] Specifically, the aforementioned display module 160 may include a display body 161 and a third flexible circuit board 162. The third flexible circuit board 162 may be an FPC. The display body 161 is located on the second side of the frame 110 and may be an LED (Light Emitting Diode) display, an OLED (Organic Light-Emitting Diode) display, an LCD (Liquid Crystal Display), or the like. The fingerprint module 120 may be located below the display body 161. The display body 161 has an area for the fingerprint module 120 to pass through, so that the fingerprint module 120 can be displayed on the screen of the display body 161.

[0031] The frame 110 is provided with a second through hole 113, which passes through the first side and the second side of the frame 110. The first end of the third flexible circuit board 162 can be electrically connected to the display body 161, and the second end of the third flexible circuit board 162 can pass through the second through hole 113 and be electrically connected to the first flexible circuit board 150, and then be electrically connected to the first circuit board 130 through the first flexible circuit board 150; or, the second end of the third flexible circuit board 162 can pass through the second through hole 113 and be electrically connected to the first circuit board 130, and then be electrically connected to the second circuit board 140 through the first flexible circuit board 150.

[0032] For example, the fingerprint module 120 described above can be electrically connected to the second circuit board 140 via the second flexible circuit board 122, the first flexible circuit board 150, and the display body 161 can be electrically connected to the second circuit board 140 via the third flexible circuit board 162, the first circuit board 130, the first flexible circuit board 150, and the second circuit board 140. Using this combination, the signals input to the first circuit board 130 from the display body 161, speaker, and other components can be uniformly output to the second circuit board 140 via the fourth electrical connection portion 131 on the first circuit board 130. This enables the reuse of electrical connections, eliminating the need for excessive electrical connections on the first circuit board 130 and the first flexible circuit board 150, thereby helping to reduce the size of the first circuit board 130 and the first flexible circuit board 150.

[0033] The above embodiments of this application focus on describing the differences between the various embodiments. As long as the different technical features between the various embodiments are not contradictory, they can be combined to form more specific embodiments. For the sake of brevity, they will not be described in detail here.

[0034] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An electronic device, characterized in that, Includes a frame, a fingerprint module, a first circuit board, a second circuit board, and a first flexible circuit board; The frame has a first side and a second side facing away from each other, and a first through hole connecting the first side and the second side. The first circuit board, the second circuit board and the first flexible circuit board are all disposed on the first side of the frame, and the first circuit board is electrically connected to the second circuit board through the first flexible circuit board. The fingerprint module includes a module body and a second flexible circuit board. The module body is disposed on the second side of the frame. The first end of the second flexible circuit board is electrically connected to the module body, and the second end of the second flexible circuit board passes through the first through hole and is electrically connected to the first flexible circuit board.

2. The electronic device according to claim 1, characterized in that, The first flexible circuit board has a first electrical connection portion at its end near the first circuit board, and the second flexible circuit board has a second electrical connection portion at its second end. The first electrical connection portion and the second electrical connection portion are detachably connected.

3. The electronic device according to claim 2, characterized in that, There is an installation gap between the first circuit board and the frame, and the first electrical connection extends into the installation gap and faces the side of the first circuit board facing the frame.

4. The electronic device according to claim 3, characterized in that, The second end of the second flexible circuit board is bent in the mounting gap and connected to the side of the first flexible circuit board away from the frame, so that the first electrical connection part and the second electrical connection part are mated, and the first circuit board is covered on the first electrical connection part and the second electrical connection part.

5. The electronic device according to claim 1, characterized in that, The first flexible circuit board has an adhesive area on one side of its surface facing the frame, and the adhesive area is bonded to the first side of the frame.

6. The electronic device according to claim 2, characterized in that, The first flexible circuit board includes a flexible body, a connecting portion, and an extension portion. The extension portion is connected to the flexible body through the connecting portion, and the first electrical connection portion is disposed in the extension portion. The frame is provided with a limiting skeleton on the first side, the limiting skeleton is used to limit the first circuit board, the connecting part is bent at the limiting skeleton, and the connecting part is respectively attached to the two sides of the limiting skeleton.

7. The electronic device according to claim 1, characterized in that, The frame has a positioning post on its first side, and the edge of the first flexible circuit board has a protruding extension with a positioning hole. The positioning post passes through the positioning hole.

8. The electronic device according to claim 2, characterized in that, The first flexible circuit board is provided with a third electrical connection part at the end near the first circuit board, and a fourth electrical connection part is provided on the side of the first circuit board away from the frame. The third electrical connection part and the fourth electrical connection part are detachably connected. The first flexible circuit board has a fifth electrical connection portion at its end near the second circuit board, and the second circuit board has a sixth electrical connection portion. The fifth electrical connection portion and the sixth electrical connection portion are detachably connected.

9. The electronic device according to claim 8, characterized in that, The first electrical connection portion and the third electrical connection portion are offset along the thickness direction of the first circuit board, and the first electrical connection portion is disposed between the first circuit board and the frame, while the third connection portion is disposed on the side of the first circuit board away from the frame.

10. The electronic device according to claim 8, characterized in that, One of the first electrical connection part and the second electrical connection part is a plug, and the other is a socket, so that the first electrical connection part and the second electrical connection part can be plugged in and engaged; And / or, one of the third electrical connection and the fourth electrical connection is a plug and the other is a socket, so that the third electrical connection and the fourth electrical connection can be plugged in and engaged; And / or, one of the fifth electrical connection portion and the sixth electrical connection portion is a plug and the other is a socket, so that the fifth electrical connection portion and the sixth electrical connection portion can be plugged in and engaged.

11. The electronic device according to claim 1, characterized in that, The electronic device further includes a display module, which includes a display body and a third flexible circuit board. The display body is located on the second side of the frame, and the fingerprint module is located below the display body. The frame is provided with a second through hole, which passes through the first side and the second side of the frame. The first end of the third flexible circuit board is electrically connected to the display body, and the second end of the third flexible circuit board passes through the second through hole and is electrically connected to the first flexible circuit board or the first circuit board.

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