JP2008112642A - Electronic apparatus, short circuit detection/power supply shutdown method, and mounting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic apparatus and a short circuit detection/power supply shutdown method which can detect short circuit faults of connection terminals in a simple configuration and recover short circuit faults with ease. <P>SOLUTION: When a connection terminal row 13 on the FPC8 is inserted crosswise into a connection terminal row 12 on a mother board 6, a first grounding connection terminal 13A on the FPC8 places a first detection connection terminal 12A and an adjacent first grounding connection terminal 12B in a conductive state in an area striding across those connection terminals, putting the first detection connection terminal 12A into a grounded state. With such an arrangement, Low level input signal is applied to a shutdown pin, which in turn stops operation of a DC/DC converter and power feeding from a first power supply connection terminal, thereby preventing short circuit faults caused by contact of the first power supply connection terminal with its adjacent signal terminals, grounding terminals and the like. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention provides, for example, an FPC (Flexible Printed Circuit) or FFC (Flexible Flat Cable) for connecting a motherboard of a personal computer and a board for an external interface such as a USB (Universal Serial Bus) and the like for the motherboard and the external interface. The present invention relates to an electronic device including a connection portion with a substrate, a short circuit detection / power supply stop method, and a mounting structure.

  In general, a personal computer motherboard and a board for an external interface such as a USB are connected by FPC or FFC (Note: This cable is included in the category of the board in this specification), and signals are exchanged. The

  Some of the substrates for external interfaces as described above require a power supply. In this case, power is supplied from the motherboard. The motherboard is equipped with a DC / DC converter. For example, in a notebook personal computer, a DC power supply from the outside is converted into a desired voltage by the DC / DC converter on the motherboard, and a board for an external interface through the FPC or FFC. To supply.

  For example, the mother board and the FPC respectively connect a plurality of connection terminals arranged in one or two rows on the mother board and a plurality of connection terminals arranged in one or two rows on the end of the FPC. As a configuration of these connection portions, for example, the FPC end connection terminals are inserted in parallel to the direction orthogonal to the motherboard connection terminal row, and the connection terminals of the motherboard and the FPC end connection terminals are connected. The connection terminal of the motherboard and the connection terminal of the FPC end are fixed by a mechanism sandwiched from the back of the connection terminal of the FPC end.

  However, when the FPC end connection terminal is inserted into the motherboard connection terminal with respect to the row, the FPC end portion with respect to the motherboard connection terminal is erroneously inclined from the oblique direction, not in the direction orthogonal to the row. When the connection terminal of the FPC is inserted, or when the position of the connection terminal at the FPC end is inclined with respect to the row of the connection terminals of the motherboard due to displacement after insertion, There is a possibility of short-circuiting not only the connection terminals but also adjacent connection terminals.

  In particular, when power is supplied from a motherboard to an external interface board via an FPC or FFC, if the power supply connection terminal is short-circuited as described above, the wiring of the motherboard, FPC, etc. Burnout or damage to chip components mounted on the

  In addition, when the connection terminals such as the motherboard and the FPC are arranged in two rows, if the insertion of the connection terminal at the end of the FPC is insufficient with respect to the connection terminal of the motherboard, or a displacement occurs after the insertion. There is a possibility that a similar short-circuit failure may occur due to the connection terminals in the front end side of the FPC end contacting the connection terminals in the side of the motherboard closer to the FPC.

Therefore, for example, by applying the technique described in Patent Document 1, one of the connection terminals has a fuse function, and when a short circuit failure occurs, the connection terminal is blown so that no current flows. Conceivable.
JP 2002-150918 A (paragraph [0029], FIG. 1)

  However, in the technique described in Patent Document 1, for example, not only a component having a fuse function is required, but the device is disassembled until a fuse function component can be replaced after a short circuit occurs, and the fuse function component Therefore, it takes time and effort to recover from a short circuit failure.

  In view of the circumstances as described above, an object of the present invention is to provide an electronic device and a short circuit detection / power supply that can detect a short circuit failure of a connection terminal with a simple configuration and can easily recover from a short circuit failure. It is to provide a supply stop method.

  An object of the present invention is to provide a mounting structure capable of detecting a short circuit failure of a connection terminal with a simple configuration.

  In order to solve the above problems, a mounting structure according to a main aspect of the present invention is a first power supply connection terminal for supplying power to the outside, a first capable of detecting a ground state. A first substrate on which a plurality of first connection terminals including a ground connection first ground connection terminal adjacent to the detection connection terminal and the first detection connection terminal are arranged in at least one row; A second connection terminal arranged in correspondence with each of the first connection terminals, and each of the first connection terminals and each of the second connection terminals. And a power supply stop unit for stopping the supply of power from the first power supply connection terminal to the outside when a ground state is detected by the first detection connection terminal.

  In the present invention, the plurality of first connection terminals include a first detection connection terminal capable of detecting a ground state, and the first ground connection adjacent to and grounded to the first detection connection terminal. When the terminal is included, when the so-called oblique insertion occurs between the first connection terminal and the second connection terminal, the second connection terminal is connected to the first detection connection terminal and the first ground. Make the connection terminal conductive. As a result, the ground state is detected by the first detection connection terminal, and the supply of power from the first power supply connection terminal to the outside is stopped. Therefore, according to the present invention, it is possible to detect a short circuit failure of the connection terminal with a simple configuration and to easily recover from the short circuit failure.

  In the present invention, the first substrate may include a converter that converts a voltage of the power supplied to the outside into a predetermined voltage, and the power supply stop unit.

  In the present invention, since the voltage converter and the power supply stop unit are provided on the first substrate, the wiring and the like are simplified, and the short circuit failure of the connection terminal can be detected and restored with a simpler configuration.

  In the present invention, when the transformer receives a predetermined signal, the transformer has an input terminal that stops the operation of the converter, and the power supply stop unit includes the first detection connection terminal and the input terminal. It is good also as a structure which is a track | line which connects.

  In the present invention, since the power supply stop unit can be simply a line connecting the first detection connection terminal and the input terminal, for example, it is possible to detect and restore a short circuit failure of the connection terminal with a simpler configuration. Can do.

  In the present invention, the power supply stop unit is inserted in the line, and outputs the predetermined signal to the first detection connection terminal when the first detection connection terminal is in a ground state. It is good also as a structure which has a signal output part.

  In the present invention, it is possible to detect and recover from a short circuit failure of the connection terminal with a simpler configuration without changing the configuration of the transformer.

  In the present invention, the power source output from the converter or the switch capable of disconnecting the power source input to the converter is provided, the power supply stop unit is configured such that the first detection connection terminal is in a ground state. In this case, the power may be cut off by the switch.

  In the present invention, the power supply output from the converter or the switch that can cut off the power input to the converter is used to cut off the supply of power according to the short circuit failure. Detection and recovery can be performed with a simpler configuration.

  In the present invention, the power supply stop unit may use a function of stopping power supply when there is an abnormality in the power supply system.

  In the present invention, it is possible to prevent a short circuit failure without adding a special configuration for stopping the supply of power.

  A short-circuit detection / power supply stop method according to another aspect of the present invention is a first power supply connection terminal for supplying power to the outside on a first board, and a first state capable of detecting a ground state. A plurality of first connection terminals including a first ground connection terminal which is adjacent to the first detection connection terminal and the first detection connection terminal and grounded, and each of the first connection terminals is disposed on a second substrate. A plurality of second connection terminals are arranged corresponding to the first connection terminals, and when the ground state is detected by the first detection connection terminals, the first power supply connection terminals are connected to the outside. Stop supplying power.

  In the present invention, when a so-called oblique insertion occurs between the first connection terminal and the second connection terminal, the second connection terminal connects the first detection connection terminal and the first ground connection terminal. Since the conductive state is established, the ground state is detected by the first detection connection terminal, and the supply of power from the first power supply connection terminal to the outside is stopped. Therefore, according to the present invention, it is possible to detect a short circuit failure of the connection terminal with a simple configuration and to easily recover from the short circuit failure.

  A mounting structure according to still another aspect of the present invention includes a first detection connection terminal capable of detecting a ground state and the first detection connection terminal adjacent to and grounded. A first substrate in which a plurality of first connection terminals including connection terminals are arranged in at least one row, and a second substrate in which a plurality of second connection terminals are arranged corresponding to the first connection terminals. And a connection portion for connecting each of the first connection terminals and each of the second connection terminals.

  In the present invention, the plurality of first connection terminals include a first detection connection terminal capable of detecting a ground state, and the first ground connection adjacent to and grounded to the first detection connection terminal. When the terminal is included, when the so-called oblique insertion occurs between the first connection terminal and the second connection terminal, the second connection terminal is connected to the first detection connection terminal and the first ground. Make the connection terminal conductive. As a result, the ground state is detected by the first detection connection terminal. Therefore, according to the present invention, it is possible to detect a short circuit failure of the connection terminal with a simple configuration.

  In the present invention, the first detection connection terminal and the first ground connection terminal may be arranged at a substantially central position among the plurality of first connection terminals arranged in a row. Good.

  In the present invention, since the first detection connection terminal and the first ground connection terminal are arranged at a substantially central position among the plurality of first connection terminals arranged in a line, the plurality of first connection terminals are arranged. It is possible to more reliably detect a short circuit failure at both ends of the connection terminal.

  In the present invention, the first and second connection terminals may be arranged in a staggered manner.

  In the present invention, the first and second connection terminals can be wired with higher density.

  In the present invention, the second substrate may have a flexible structure. FPC and FFC correspond to such a substrate.

  In the present invention, in the connection portion, the second substrate is inserted in parallel with the first substrate, and the first connection terminals and the second connection terminals are connected to each other. The first and second connection terminals may have a structure and are arranged in two rows.

  In such a case, short circuit failure due to so-called oblique insertion or half insertion is likely to occur, and the present invention can be applied more effectively.

  In the present invention, the first detection connection terminals are arranged in a row on the second substrate side among the first connection terminals arranged in the two rows, and the first detection terminals arranged in the two rows are arranged. The first ground connection terminal may be arranged at a position corresponding to the first detection connection terminal in a row opposite to the second substrate side among the connection terminals.

  In the present invention, a short circuit failure due to so-called half insertion can be detected with a simple configuration.

  According to the electronic device and the short circuit detection / power supply stop method of the present invention, it is possible to detect a short circuit failure of the connection terminal with a simple configuration and to easily recover from the short circuit failure.

  According to the mounting structure of the present invention, it is possible to detect a short circuit failure of a connection terminal with a simple configuration.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a conceptual diagram of a notebook personal computer as an electronic apparatus according to an embodiment of the present invention.
As shown in FIG. 1, the notebook personal computer 1 includes a main body 2 and a display unit 3 that is pivotally attached to the main body 2 so as to be openable and closable. In this figure, for ease of understanding, the main body 2 and the display unit 3 are shown to be on the same plane. However, in actuality, the display unit 3 is used with the display unit 3 standing on the main unit 2, Carrying or the like is performed in a closed state so that the display unit 3 faces the main body 2.

On the plane of the main body 2, a keyboard 4, a touch pad 5, and the like are arranged. Inside the main body 2 are a mother board 6 as a first board, a board 7 for an external interface (for example, USB) as a third board, an FPC 8 as a second board, and a DC power supply input terminal 9. A battery 10 and the like are arranged. The FPC 8 connects the mother board 6 and the interface board 7, and signals are exchanged between the mother board 6 and the interface board 7 via the FPC 8. Power is supplied to the substrate 7.
The display unit 3 is provided with a liquid crystal display panel 11.

FIG. 2 is a schematic plan view showing the arrangement of the connection terminals (first connection terminals) of the motherboard 6 for connection to the FPC 8 and the arrangement of the connection terminals (second connection terminals) of the FPC 8 for connection to the motherboard 6. FIG.
As shown in FIG. 2, a plurality of connection terminals 12 are provided in two rows on the mother board 6. The adjacent connection terminals 12 are arranged so as to be uneven with respect to the FPC 8 side, that is, in a staggered manner.

  Among the plurality of connection terminals 12 provided in these two rows, a first detection connection terminal 12A capable of detecting the ground state is disposed at substantially the center of the row on the FPC 8 side. Also, grounded first ground connection terminals 12B are arranged on both sides of the first detection connection terminal 12A so as to be adjacent to the first detection connection terminal 12A. The first detection connection terminal 12A is normally in an electrically high state or in an electrically floating state.

  Among the plurality of connection terminals 12 provided in these two rows, a first ground connection terminal 12B is disposed at a position opposite to the first detection connection terminal 12A in the row opposite to the FPC 8, and this The first ground connection terminal 12B is also arranged on both sides of the first ground connection terminal 12B. That is, the first ground connection terminal 12B is disposed so as to surround the first detection connection terminal 12A in a U-shape.

  Among the plurality of connection terminals 12 provided in these two rows, a first power supply connection terminal 12C for supplying power to the interface board 7 via the FPC 8 is provided at a predetermined position. Yes.

  Of the plurality of connection terminals 12, other than the first detection connection terminal 12 </ b> A, the first ground connection terminal 12 </ b> B, and the first power supply connection terminal 12 </ b> C are connection terminals for exchanging signals, for example.

  The connection terminal 13 of the FPC 8 is provided at one end of the FPC 8 so as to face the connection terminal 12 on the mother board 6. That is, the first detection connection terminal 13 </ b> A, the first ground connection terminal 13 </ b> B, and the first power supply connection terminal 13 </ b> C are arranged symmetrically with the connection terminal 12 on the mother board 6. Accordingly, the first detection connection terminal 13A is provided at a position on the opposite side of the mother board 6, and the first detection connection terminal 13A is surrounded by a U-shape so as to surround the first detection connection terminal 13A. 13B is arranged. The FPC 8 has, for example, a two-layer structure, and the connection terminals in the column on the mother board 6 side are connected to the first layer wiring, and the connection terminals in the column opposite to the mother board 6 are connected to the second layer wiring. Yes.

  Although not shown in the figure, the arrangement of the connection terminals of the interface board 7 is the same as that of the mother board 6. Accordingly, the connection terminals of the FPC 8 are also arranged symmetrically in the same manner.

  FIG. 3 is a perspective view showing a configuration of a connector as a connection portion for connecting the connection terminal 13 of the FPC 8 to the connection terminal 12 on the mother board 6, and FIG. 4 is a sectional view thereof.

  As shown in these drawings, the connector 14 is mounted on the mother board 6. The connection terminal 12 is provided at the bottom of the connector 14. At the insertion port 14 </ b> A of the connector 14, one end of the FPC 8 is inserted in parallel to the row of connection terminals 12, and the connection terminals 13 of the FPC 8 are connected to the connection terminals 12 on the motherboard 6. The connector 14 is provided with a lock lever 14B. By rotating the lock lever 14B, the lock lever 14B connects the one end of the FPC 8 from the back side opposite to the connection terminal 13 surface of the FPC 8. The FPC 8 is fixed to the mother board 6 while being pressed to the bottom (the connection terminal 12 side) and the connection terminal 13 is connected to the connection terminal 12.

  FIG. 5 is a block diagram showing the configuration of the power supply system on the mother board 6.

  As shown in FIG. 5, on the motherboard 6, for example, a DC / DC converter 15 that converts a power supply voltage of about 19 V input from a power supply input terminal 9 to a power supply voltage of about 5 V, and the DC / DC converter 15 A DC / DC converter 16 for converting the output to a power supply voltage of about 3V and a DC / DC converter 17 for converting the output of the DC / DC converter 15 to a power supply voltage of about 1.8V are mounted. Of course, more DC / DC converters may be provided as required.

  The DC / DC converter 16 and the DC / DC converter 17 are respectively provided with shutdown pins 16A and 17A for shutting down the output when the Low signal (ground voltage) is inputted (stopping the output of the power source of the converter). A disconnect switch 18 is provided on the output side of the DC / DC converter 15.

  The outputs of the DC / DC converter 15, DC / DC converter 16 and DC / DC converter 17 are monitored by monitors 19, 20, and 21 for normal operation. When each monitor 19, 20, 21 detects an abnormality in the output of each DC / DC converter 15, DC / DC converter 16, and DC / DC converter 17, the DC / DC converter 15, DC / DC converter 16 and DC / DC The power is not supplied from the DC converter 17.

  More specifically, when the monitor 19, 20, 21 detects an abnormality in the output of any one of the DC / DC converter 15, the DC / DC converter 16, and the DC / DC converter 17, it outputs a high signal in the normal state. However, a low signal (ground voltage) is output as an error signal to turn off the disconnect switch 18, and a low signal (ground voltage) is output to the shutdown pins 16A and 17A to operate the DC / DC converters 16 and 17. Stop.

  For example, the output of the DC / DC converter 17 is connected to the first power supply connection terminal 12C, and is supplied to the interface board 7 via the FPC 8. The first detection connection terminal 12 </ b> A is directly connected to the shutdown pin 17 </ b> A via the line 22.

  In the personal computer 1 configured as described above, when a short circuit failure occurs due to a so-called diagonal insertion or half insertion of the row of the connection terminals 13 of the FPC 8 with respect to the row of the connection terminals 12 on the motherboard 6 in the manufacturing stage or the use stage. Operates as follows.

・ Short-circuit failure due to oblique insertion
FIG. 6 shows a state in which the row of connection terminals 13 of the FPC 8 is obliquely inserted with respect to the row of connection terminals 12 on the mother board 6.
As shown in FIG. 6, when the row of the connection terminals 13 of the FPC 8 is obliquely inserted with respect to the row of the connection terminals 12 on the mother board 6, the first ground connection terminal 13B of the FPC 8 becomes the first detection connection terminal. 12A and the first ground connection terminal 12B adjacent to each other are placed in a conductive state, and the first detection connection terminal 12A is in a ground state.

  When the first detection connection terminal 12A is in the ground state, the first detection connection terminal 12A is directly connected to the shutdown pin 17A via the line 22, so that a Low signal (ground voltage) is supplied to the shutdown pin 17A. As a result, the operation of the DC / DC converter 17 is stopped.

  As a result, the output of the DC / DC converter 17 is connected to the first power supply connection terminal 12C and supplied to the interface board 7 via the FPC 8, as shown in FIG. Since the operation of the DC / DC converter 17 is stopped even if the first power supply connection terminal 12C is brought into contact with the adjacent signal terminal or the ground terminal instead of the original connection terminal by the diagonal insertion, The power supply from the power supply connection terminal 12C is stopped, and short circuit failure due to contact between the first power supply connection terminal 12C and the adjacent signal terminal, ground terminal, or the like is prevented.

・ Short-circuit failure due to half insertion
FIG. 7 shows a state in which the row of connection terminals 13 of the FPC 8 is half inserted with respect to the row of connection terminals 12 on the mother board 6.
As shown in FIG. 7, when the row of the connection terminals 13 of the FPC 8 is half inserted into the row of the connection terminals 12 on the mother board 6, the first ground connection terminal 13B of the FPC 8 becomes the first row of the first row. The detection connection terminal 12A and the first ground connection terminal 12B opposite to this in the second row are straddled, and the connection is established between them, and the first detection connection terminal 12A is in the ground state.

  Similarly to the above, when the first detection connection terminal 12A is grounded, a Low signal (ground voltage) is input to the shutdown pin 17A, and the operation of the DC / DC converter 17 is stopped. As a result, for example, even if the first power supply connection terminal 12C in the first row is not the original connection terminal due to half-insertion, the DC / DC converter 17 operates even if it contacts the signal terminal, the ground terminal, or the like in the second row. Is stopped, power supply from the first power supply connection terminal 12C is stopped, and short circuit failure due to contact between the first power supply connection terminal 12C and the signal terminal, the ground terminal, or the like is prevented. .

  Even if there is a short circuit failure due to the same diagonal or half insertion between the connection terminal 13 of the FPC 8 and the connection terminal of the interface board 7, the operation of the DC / DC converter 17 is stopped in the same manner as described above, and the short circuit failure is caused. Is prevented.

  Further, in the present embodiment, since the first detection connection terminal is located approximately at the center of the connection terminal row, it is possible to detect a short circuit failure on both sides of the connection terminal row. In other words, in order to detect a case where the connector 14 is inserted right obliquely and a case where it is stuck obliquely left, it is necessary to provide connection terminals for detection at the left and right ends of the connector 14. The first detection connection terminal 12A is provided in a substantially central portion, and the first detection connection terminal 12B is provided so as to surround the first detection connection terminal 12A in a U-shape. Either one of the connecting terminals 12A can be used to detect either the left or right slant.

  The present invention is not limited to the above-described embodiment, and various modifications are possible, and the modified embodiment is also within the scope of the present invention.

  For example, in the above embodiment, the first detection connection terminal 12A is directly connected to the shutdown pin 17A via the line 22, but the operation of the DC / DC converter 17 is performed when the shutdown pin 17A is in a high state. Is shut down, an inverting circuit 22As may be inserted on the line 22 as shown in FIG.

  In the above embodiment, the short-circuit failure is prevented by shutting down the operation of the DC / DC converter 17. However, as shown in FIG. 9, the disconnect switch 18 that disconnects the output of the DC / DC converter 15 is used. The first detection connection terminal 12A is connected to the control side via the line 22 directly or via an inverting circuit, and the output from the DC / DC converter 15 is output when there is a short circuit failure due to oblique insertion or half insertion. The DC / DC converter 17 may not be input. A disconnection switch may be provided on the input side of the DC / DC converter 15 to perform the same operation.

  Further, in the above-described embodiment, the USB is described as an example of the interface board 7. However, other boards such as an IEEE1394 board may be used, and the mother board is taken as an example as the first board. Of course, other substrates may be used.

  Furthermore, in the above embodiment, the power supply is cut off by using a conventional device such as a shutdown pin or a disconnect switch. However, other switches or the like may be used. Of course, it may be provided. There may be more than one row of connection terminals, more than one row, one row, or a mixture of one and two rows, for example.

  Further, a configuration may be adopted in which a signal after detection is input to a CPU or the like and the power is turned off by software control. Specifically, for example, a configuration may be adopted in which a power supply output from the CPU is stopped when an oblique detection signal line is connected to the CPU and the transition of the signal is monitored to detect the oblique orientation.

  Furthermore, in the above-described embodiment, the case where the connector is horizontal is described, but the present invention can be applied not only to horizontal but also to vertical.

  In the above embodiment, a notebook personal computer has been described as an example. However, the present invention can also be applied to a desktop personal computer and other electronic devices such as a game machine and a mobile phone.

1 is a conceptual diagram of a notebook personal computer according to an embodiment of the present invention. It is the schematic plan view which showed arrangement | positioning of the connection terminal of the motherboard for connecting with FPC which concerns on one Embodiment of this invention, and arrangement | positioning of the connection terminal of FPC for connecting with a motherboard. It is a perspective view which shows the structure of the connector for connecting the connection terminal of FPC with respect to the connection terminal on the motherboard which concerns on one Embodiment of this invention. FIG. 4 is a cross-sectional view of FIG. 3. It is a block diagram which shows the structure of the power supply system on the motherboard which concerns on one Embodiment of this invention. It is a figure which shows the state by which the row | line | column of the connection terminal of FPC was half inserted with respect to the row | line | column of the connection terminal on a motherboard. It is a figure which shows the state by which the row | line | column of the connection terminal of FPC was half inserted with respect to the row | line | column of the connection terminal on a motherboard. It is a block diagram which shows the structure of the power supply system on the motherboard which concerns on other embodiment of this invention. It is a block diagram which shows the structure of the power supply system on the motherboard which concerns on another embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Notebook-type personal computer 2 Main body 6 Motherboard 7 Board | substrate for interface with the outside 8 FPC
12 connection terminal 12A first detection connection terminal 12B first ground connection terminal 12C first power supply connection terminal 13 connection terminal 13A first detection connection terminal 13B first ground connection terminal 13C first power supply Supply connection terminal 14 Connector 15, 16, 17 DC / DC converter 16A, 17A Shutdown pin 18 Disconnect switch 22 Line

Claims (13)

A first power supply connection terminal for supplying power to the outside, a first detection connection terminal capable of detecting a ground state, and the first detection connection terminal adjacent to and grounded A first substrate in which a plurality of first connection terminals including one ground connection terminal are arranged in at least one row;
A second substrate in which a plurality of second connection terminals are arranged corresponding to each of the first connection terminals;
A connecting portion for connecting each of the first connection terminals and each of the second connection terminals;
A power supply stop unit that stops supply of power from the first power supply connection terminal to the outside when a ground state is detected by the first detection connection terminal; machine. The electronic device according to claim 1,
The electronic device, wherein the first substrate includes a converter that converts a voltage of a power supply supplied to the outside into a predetermined voltage, and the power supply stop unit. The electronic device according to claim 2,
The transformer has an input terminal for stopping the operation of the converter when a predetermined signal is input;
The electronic apparatus according to claim 1, wherein the power supply stop unit is a line connecting the first detection connection terminal and the input terminal. The electronic device according to claim 3,
The power supply stop unit is inserted into the line, and a signal output unit that outputs the predetermined signal to the first detection connection terminal when the first detection connection terminal is in a ground state. An electronic device including the electronic device. The electronic device according to claim 2,
A switch capable of disconnecting the power output from the converter or the power input to the converter;
The electronic device is characterized in that the power supply stop unit cuts off the power by the switch when the first detection connection terminal is in a ground state. The electronic device according to claim 1,
The electronic device is characterized in that the power supply stop unit uses a function of stopping the supply of power when there is an abnormality in the power supply system. A first power supply connection terminal for supplying power to the outside, a first detection connection terminal capable of detecting a ground state, and the first detection connection terminal adjacent to the first substrate. A plurality of first connection terminals including a grounded first ground connection terminal;
A plurality of second connection terminals are arranged on the second substrate corresponding to each of the first connection terminals,
When the ground state is detected by the first detection connection terminal, the supply of power from the first power supply connection terminal to the outside is stopped. A first detection connection terminal capable of detecting a ground state and a plurality of first connection terminals adjacent to the first detection connection terminal and including the grounded first ground connection terminal are at least one. A first substrate arranged in a row;
A second substrate in which a plurality of second connection terminals are arranged corresponding to each of the first connection terminals;
A mounting structure comprising: a connection portion for connecting each of the first connection terminals and each of the second connection terminals. The mounting structure according to claim 8,
The mounting structure, wherein the first detection connection terminal and the first ground connection terminal are arranged at a substantially central position among the plurality of first connection terminals arranged in a row. body. The mounting structure according to claim 8,
The mounting structure according to claim 1, wherein the first and second connection terminals are arranged in a staggered pattern. The mounting structure according to claim 8,
The mounting structure, wherein the second substrate has flexibility. The mounting structure according to claim 8,
The connection portion has a structure in which the second substrate is inserted in parallel with the first substrate and the first connection terminals are connected to the second connection terminals. ,
The mounting structure according to claim 1, wherein the first and second connection terminals are arranged in two rows. The mounting structure according to claim 12,
The first detection connection terminals are arranged in a row on the second substrate side among the first connection terminals arranged in the two rows,
Of the first connection terminals arranged in the two rows, the first ground connection terminal is located in a row opposite to the second substrate side and in a position corresponding to the first detection connection terminal. A mounting structure in which is arranged.

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