JP2007065676A - Display device and game machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device that can display images on various displays without increasing a device price as a whole and that is superior in recycleability with versatility in the display. <P>SOLUTION: The device includes: a liquid crystal display 13B mounted with a liquid crystal panel 62B; a display control board 11 mounted with a CPU 34 and LCD controller 36 for performing display control for the liquid crystal panel 62B; a connecting board 12C for electrically connecting the liquid crystal display 13B and display control board 11 so as to match the mutual electrical characteristics of the liquid crystal display 13B and display control board 11 such as at least a shape of a connector and arrangement of signal lines, kinds of video signals and the level of the signals; and an inverter board 14. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a display device in which a display control element performs display control on a display element, and a gaming machine including the display device.

  As this type of display device, a display device (variable display device) disclosed in Japanese Patent Application Laid-Open No. 2001-1113015 is known. The display device includes a liquid crystal panel unit and an image display control board. In this case, the image display control board is mounted with an image display circuit that is configured by an auxiliary CPU, an image control IC, and the like and displays an image on the liquid crystal panel unit.

Japanese Patent Laid-Open No. 2001-1113015 (page 4, FIG. 3)

  However, the conventional display device has the following problems. That is, the liquid crystal panel unit in this type of display device generally has different electrical characteristics such as the voltage of the operating power and the frequency of the clock signal when the size and shape are different. Accordingly, this type of display device is provided with a dedicated image display control board adapted to the electrical characteristics according to the type of the liquid crystal panel unit. For this reason, even if the main functions are common, it is necessary to manufacture a plurality of different types of image display control boards depending on the type of the liquid crystal panel unit. There is a problem that the price of the equipment is soaring.

  The present invention has been made in view of such a problem, and a main object of the present invention is to provide a display device and a gaming machine that can display images on various display units without increasing the overall device price. . Another main object is to provide a display device that is highly recyclable by improving the versatility of the display portion.

  In order to achieve the above object, a display device according to the present invention includes a display unit on which a display element is mounted, a display control unit on which a display control element for performing display control on the display element is mounted, In the display device including the display unit and the connection unit that electrically connects the display control unit so that the electrical characteristics of the display unit and the display control unit match each other, the display unit and the connection A sub-connection for electrically connecting the units is provided, and a converter for converting the power or voltage output from the display control unit and outputting it to the display unit is mounted on the sub-connection unit.

  According to this display device, for example, the connection unit electrically connects the display unit and the display control unit so that the electrical characteristics of each other match each other. An image can be displayed on a plurality of types of display devices having different electrical characteristics such as frequencies using the same display control unit. Therefore, since the display control unit can be used in common, images can be displayed on various display units without increasing the overall device price. Moreover, the recyclability of the display part is also excellent.

  Furthermore, according to this display device, since the sub-connection portion can electrically connect the display portion and the connection portion, the connection portion can be made common, so that the device price of the display device can be reduced and the connection can be reduced. The converter of the unit converts the power or voltage output from the display control unit and outputs it to the display unit, so that the display control unit does not change even for display units with different operating power and voltage. An image can be displayed.

  In the display device according to the present invention, in the above display device, the connection portion includes a first connector electrically connected to the display control portion, and a first connector electrically connected to the display portion. 2 connectors are mounted.

  According to this display device, by connecting the first connector of the connection unit to the display control unit and connecting the second connector of the connection unit to the display unit, for example, the connector of the display unit and the display control unit Even when the shape of the connector and the arrangement of the signal lines are different from each other, the display control unit and the display unit can be electrically and reliably connected via the connection unit.

  Further, according to this display device, the sub-connection portion and the connection portion, and the display portion and the sub-connection portion are connected by a connector, whereby the converter of the sub-connection portion outputs the power output from the connection portion. Alternatively, by converting the voltage and outputting it to the display unit, it is possible to display an image without changing the display control unit and the connection unit even on display units having different operating power or voltage.

  In the display device according to the present invention, in the display device, the connection unit includes a clock signal oscillator that generates the display control clock signal and outputs the clock signal to the display control element of the display control unit. It is installed.

  According to this display device, the clock signal oscillator of the connection unit outputs the clock signal for display control to the display control element of the display control unit, thereby changing the display control unit even for the display units having different clock signals. An image can be displayed without doing so.

  In the display device according to the present invention, in the display device, the connection unit converts a digital signal output from the display control unit into an analog signal and outputs the analog signal to the display element of the display unit. A digital / analog converter is installed.

  According to this display device, the digital / analog converter of the connection unit operates by inputting an analog signal by converting the digital signal output from the display control unit into an analog signal and outputting the analog signal to the display unit. An image can be displayed on the display unit without changing the display control unit.

  In the display device according to the present invention, in the display device described above, the connection unit converts a level of a signal output from the display control unit and outputs the level to the display element of the display unit. A vessel is installed.

  According to this display device, the level converter of the connection unit converts the level of the signal output from the display control unit into a level that matches the display unit and outputs the level to the display unit, whereby the signal on the display control unit side An image can be displayed on a display unit that operates by inputting a signal having a level different from the level without changing the display control unit.

  Further, in the display device according to the present invention, in the display device described above, the connection unit includes an LVDS conversion in which the digital signal output from the display control unit is LVDS converted and output to the display element of the display unit. A vessel is installed.

  According to this display device, the level converter of the connection unit performs LVDS conversion on the digital signal output from the display control unit, so that a display unit of a type that operates by inputting a signal of the LVDS standard can be used. An image can be displayed without changing the display control unit.

  A gaming machine according to the present invention includes any of the display devices described above.

  According to this gaming machine, by providing the above display device, it is possible to achieve the same effect as the above display device.

  The best mode of a display device and a gaming machine according to the present invention will be described below with reference to the accompanying drawings.

  First, the configuration of the pachinko machine 1 (an example of a gaming machine according to the present invention) will be described with reference to the drawings. The pachinko machine 1 shown in FIG. 1 is, for example, a “seven machine” type pachinko machine in which a “big hit” is generated by lottery. For example, an image of a number (in the figure, the number “123” is shown as an example). G is configured to be displayed on the liquid crystal display 13 disposed in the center of the game board 21. Specifically, as shown in FIG. 2, the pachinko machine 1 includes a game mechanism 2, a main control unit 3, a main storage unit 4, a main power source 5, and a display device 6. The game mechanism 2 includes a game board 21 and a drive mechanism 27. The game board 21 as a whole is formed in, for example, a rectangular plate shape when viewed from the front. As shown in FIG. 1, the game ball 21 is configured so that a game ball can move within a circular game part 21 a defined by the frame member F. ing. In this case, the game unit 21a includes a plurality of nails 22, 22,..., A start chucker 23, a big winning opening (attacker) 24, winning openings 25, 25,. The gaming parts are arranged. The drive mechanism 27 is disposed in the housing and collects or pays out game balls in accordance with instructions from the main control unit 3.

  The main control unit 3 comprehensively controls the drive mechanism 27 and the display device 6, and executes a lottery when a game ball wins the start chucker 23. Further, the main control unit 3 causes the display device 6 to display various images G by outputting a command C when the gaming state changes, for example, when a lottery starts or when a big hit occurs. The main storage unit 4 stores an operation program of the main control unit 3 and the like. The main power supply 5 supplies operating power to the game mechanism 2, the main control unit 3, the main storage unit 4, and the display device 6.

  As shown in FIG. 3, the display device 6 includes a display control board 11, a connection board 12, and a liquid crystal display 13. The display control board 11 corresponds to the display control unit in the present invention, and has a function of displaying various images G on the liquid crystal panel 62 of the liquid crystal display 13 based on the command C from the main control unit 3. Specifically, the display control board 11 includes a connector 31, a power connector 32, an I / F circuit 33, a CPU 34, an OSC 35, an LCD controller 36, a reset circuit 37, a power circuit 38, a CGROM 39, as shown in FIG. An OSC 40, a firmware ROM 41, a host RAM 42, a VRAM 43, an OSC 44, a switch 45, and a connector 46 are provided (installed).

  The I / F circuit 33 converts the command C output from the main control unit 3 and input via the connector 31 into a signal format that can be processed by the CPU 34. The CPU 34 corresponds to the display control element according to the present invention together with the LCD controller 36, and executes display control according to the command C to generate symbol designation data for displaying various images G and output it to the LCD controller 36. . The OSC 35 generates a clock signal for operating the CPU 34. The firmware ROM 41 stores a program for operating the CPU 34. The host RAM 42 temporarily stores various data generated by the CPU 34.

  The CGROM 39 stores design data such as numbers for generating display image data to be described later. The OSC 40 generates a clock signal for operating the LCD controller 36. The VRAM 43 stores display image data generated by virtually drawing a symbol by the LCD controller 36. The OSC 44 generates a clock signal corresponding to a dot clock frequency (for example, a clock frequency of 25 MHz) when the liquid crystal display 13 displays an image on the liquid crystal panel 62. The switch 45 switches between a clock signal output from the OSC 44 and a clock signal input from an external device (for example, the connection board 12) via the connector 46 and causes the LCD controller 36 to input the clock signal. In the display device 6, the switch 45 is switched in advance so as to output the clock signal output from the OSC 44 to the LCD controller 36. The LCD controller 36, together with the CPU 34, corresponds to the display control element in the present invention, reads the symbol data designated by the symbol designation data output from the CPU 34 from the CGROM 39, and stores the symbol corresponding to the read symbol data in the VRAM 43. Display image data is generated by virtual drawing (stored in the VRAM 43). The LCD controller 36 reads the display image data stored in the VRAM 43, converts it into a digital video signal synchronized with the clock signal output from the OSC 44, and outputs it.

  The power supply circuit 38 receives, for example, DC 12V operating power supplied from the main power supply 5 through the power connector 32, converts it to DC 5V, DC 3.3V, and DC 1.8V, and performs display control. To each circuit in the circuit board 11. The reset circuit 37 resets (initializes) the CPU 34 and the LCD controller 36 based on a reset signal input via the power connector 32. The connector 46 is connected to a connector 51 of the connection board 12 described later by a cable not shown. In this case, the digital video signal output from the LCD controller 36 is output to the connection board 12 via the connector 46 and the connector 51. In addition, the DC 5V operating power out of the DC 12V, DC 5V and DC 3.3V operating power is supplied to the connection board 12 via the connector 46 and the connector 51, and each of the DC 12V and DC 5V is supplied. The operating power is supplied to the liquid crystal display 13 through the connector 46, the connector 51, and the connector 52 described later.

  The connection substrate 12 corresponds to the connection portion in the present invention, and has a function of electrically connecting the display control substrate 11 and the liquid crystal display 13 so that the electrical characteristics of each other match each other. Specifically, as shown in FIG. 3, the connection substrate 12 includes (mounts) connectors 51 and 52, a DAC (digital / analog converter) 53, and a level converter 54. The connector 51 corresponds to the first connector in the present invention, and is connected to the connector 46 of the display control board 11 via a connection cable (not shown). The connector 51 is connected to the connector 52 corresponding to the second connector in the present invention via the internal wiring of the connection board 12. The DAC 53 corresponds to a digital / analog converter in the present invention, and converts a digital video signal input via the connector 51 into an analog RGB signal that can be processed by the liquid crystal display 13. The level converter 54 converts the synchronization signal included in the digital video signal into a synchronization signal having a level that matches the liquid crystal display 13.

  The liquid crystal display 13 corresponds to a display unit in the present invention, and as shown in FIG. 3, includes a liquid crystal panel 62 (corresponding to a “display element” in the present invention) and a connector 61 (mounted). . In this case, the liquid crystal display 13 operates with DC 12 V and DC 5 V operating power supplied via the connector 61. Further, the liquid crystal display 13 displays an image on the liquid crystal panel 62 based on a synchronization signal of a level matching the liquid crystal display 13 corresponding to the dot clock frequency of 25 MHz input via the connector 61 and an analog RGB signal.

  Next, the overall operation of the pachinko machine 1 will be described with reference to the drawings. In the pachinko machine 1, when the power is turned on, the main power supply 5 supplies, for example, DC 12V operating power to each component in the pachinko machine 1. Next, the reset circuit 37 of the display control board 11 resets the CPU 34 and the LCD controller 36 based on the reset signal input via the power connector 32. Next, the power supply circuit 38 of the display control board 11 converts the operating power of DC 12V into the operating power of DC 5V, DC 3.3V, and DC 1.8V and Output to the circuit. At this time, DC 5V operating power is supplied to the connection substrate 12 via the connector 46 and the connector 51, and DC 12V and DC 5V operating power is supplied to the liquid crystal display 13.

  Next, the main control unit 3 outputs a command C for displaying, for example, the image G shown in FIG. Next, the I / F circuit 33 of the display control board 11 converts the signal format of the command C input via the connector 31 and outputs it to the CPU 34. In response to this, the CPU 34 determines the contents of the command C and executes display control. In this display control, the CPU 34 generates symbol designation data for displaying various images G in accordance with the command C and outputs the symbol designation data to the LCD controller 36. Subsequently, the LCD controller 36 reads the symbol data designated by the symbol designation data output from the CPU 34 from the CGROM 39 and virtually draws the symbol corresponding to the symbol data in the VRAM 43, thereby displaying the display image data. Generate. Next, the LCD controller 36 reads the display image data stored in the VRAM 43, converts it into a digital video signal synchronized with the clock signal output from the OSC 44, and outputs the digital video signal.

  Next, a video signal conversion process for converting a digital video signal input by the DAC 53 of the connection board 12 through the connector 51 into an RGB signal is executed. Further, the level converter 54 executes a synchronization signal conversion process for converting the synchronization signal included in the digital video signal into a synchronization signal having a level matching the liquid crystal display 13. In this case, the DAC 53 executes the video signal conversion process, and the level converter 54 executes the synchronization signal conversion process, whereby the video signal and the synchronization signal output from the display control board 11 are processed on the liquid crystal display 13. Each is converted into a possible video signal and synchronization signal. That is, the connection substrate 12 connects the liquid crystal display 13 and the display control substrate 11 so that their electrical characteristics match each other. Subsequently, the liquid crystal display 13 displays the image G on the liquid crystal panel 62 based on the analog RGB signal input via the connector 61 and the synchronization signal at a level matching the liquid crystal display 13. Thereby, as shown in FIG. 1, the image G displayed on the liquid crystal panel 62 is visually recognized.

  As described above, according to the pachinko machine 1 and the display device 6, the connection substrate 12 electrically connects the liquid crystal display 13 and the display control substrate 11 so that at least the electrical characteristics of the both match each other. Thus, for example, the image G is displayed on the plurality of types of liquid crystal displays 13 having different electrical characteristics such as the shape of the connector, the type of the video signal, and the level of the synchronization signal, using the same display control substrate 11. Can do. Therefore, since the display control board 11 can be shared, the image G can be displayed on the various display units without increasing the price of the display device 6 as a whole and without increasing the price of the pachinko machine 1. Can be displayed. Further, the liquid crystal display 13 can be recycled.

  Further, the connector 51 of the connection board 12 and the connector 46 of the display control board 11 are electrically connected, and the connector 52 of the connection board 12 and the connector 61 of the liquid crystal display 13 are electrically connected. For example, even if the shapes of the connector 61 of the liquid crystal display 13 and the connector 46 of the display control board 11 and the arrangement of signal lines are different from each other, the display control board 11 and the liquid crystal display 13 are connected to the connection board 12. It is possible to make an electrical connection through the via.

  Further, the DAC 53 of the connection board 12 operates by inputting an analog RGB signal by converting the digital video signal output from the display control board 11 into an analog RGB signal and outputting it to the liquid crystal display 13. The image G can be displayed on the liquid crystal display 13 of the type without changing the display control substrate 11.

  Further, the level converter 54 of the connection board 12 converts the level of the synchronization signal output from the display control board 11 into a synchronization signal of a level matching the liquid crystal display 13 and outputs the same to the liquid crystal display 13. The image G can be displayed without changing the display control board 11 on the liquid crystal display 13 that operates by inputting a synchronization signal of a level different from the level of the synchronization signal on the display control board 11 side. .

  Next, the display device 6A shown in FIG. 4 will be described. The present invention is basically applied to the display device 6A and display devices 6B to 6D described later. Accordingly, the same components as those of the display device 6 are denoted by the same reference numerals, and redundant description is omitted. As shown in the figure, the display device 6A includes a display control board 11, a connection board 12A, and a liquid crystal display 13A that operates with a clock signal having a dot clock frequency of, for example, 48 MHz. In this case, an OSC 55 (corresponding to the “clock signal oscillator” in the present invention) that outputs a clock signal having a clock frequency of 48 MHz is mounted on the connection board 12A. In the display device 6A, the switch 45 of the display control board 11 is switched in advance so as to connect the OSC 55 and the LCD controller 36 via the connectors 46 and 51.

  In this display device 6A, the LCD controller 36 of the display control board 11 synchronizes with the 48 MHz clock signal output from the OSC 55 of the connection board 12A and input via the connectors 51 and 46 and the switch 45. The signal is output to the connection board 12A. Further, the DAC 53 of the connection board 12A executes the video signal conversion process, and the level converter 54 executes the synchronization signal conversion process. That is, the connection substrate 12A connects the liquid crystal display 13A and the display control substrate 11 so that their electrical characteristics match each other. Thus, the image G is displayed on the liquid crystal panel 62A of the liquid crystal display 13A that operates with a clock signal having a dot clock frequency of, for example, 48 MHz.

  According to this display device 6A, the OSC 55 of the connection board 12A outputs a clock signal for generating a digital video signal synchronized with a dot clock frequency of 48 MHz that can be displayed by the liquid crystal display 13A. The image G can be displayed on the liquid crystal display 13A different from the liquid crystal display 13 without changing the configuration of the display control substrate 11.

  Next, the display device 6B shown in FIG. 5 will be described. As shown in the figure, the display device 6B includes a display control board 11, a connection board 12B, and a liquid crystal display 13B that operates with a digital signal of the LVDS (Low Voltage Differential Signaling) standard and has a backlight 64. ing. In this case, the connectors 51, 52, 58, the LVDS converter 56, and the inverter 57 (corresponding to the “converter” in the present invention) are mounted on the connection board 12B. The LVDS converter 56 LVDS converts the digital video signal output from the display control board 11. The inverter 57 converts the DC 12V operating power output from the display control board 11 into, for example, AC 500V operating power for lighting the backlight 64. Note that direct current and alternating current correspond to “electric power” in the present invention, and 12 V and 500 V correspond to “voltage” in the present invention. The liquid crystal display 13B also includes a connector 61 capable of inputting a digital video signal of DC 3.3V and LVDS standards, a liquid crystal panel 62B, a connector 63 for inputting AC 500V operating power, and a backlight 64. .

  In the display device 6 </ b> B, the operating power of 12 V DC and 3.3 V DC supplied from the display control board 11 is supplied to the connection board 12 </ b> B via the connector 51. In addition, the LVDS converter 56 of the connection board 12B performs LVDS conversion on the digital video signal output from the display control board 11 and input through the connector 51, and outputs the digital video signal. Further, the inverter 57 converts DC 12V operating power into AC 500V operating power and supplies the converted power to the backlight 64 of the liquid crystal display 13B via the connector 58 and the connector 63. That is, the connection substrate 12B connects the liquid crystal display 13B and the display control substrate 11 so that their electrical characteristics match each other. As a result, the image G is displayed on the liquid crystal panel 62B of the LVDS standard liquid crystal display 13B, the backlight 64 is turned on, and the image G is viewed brightly.

  According to the display device 6B, the LVDS converter 56 of the connection board 12B converts the digital video signal output from the display control board 11 into a LVDS standard signal, and the inverter 57 outputs from the display control board 11. By converting the operating power of 12 VDC thus generated into operating power for turning on the backlight 64, an image is displayed on the liquid crystal display 13B that operates according to the LVDS standard signal without changing the configuration of the display control board 11. G can be displayed.

  Next, the display device 6C shown in FIG. 6 will be described. The display device 6C corresponds to the connection substrate 12C obtained by dividing the function of the connection substrate 12B and the inverter substrate 14 (the “sub-connection portion” in the present invention) instead of the connection substrate 12B in the display device 6B. ). In this case, the connection board 12 </ b> C includes a connector 71 that is connected to the connector 51 via the internal wiring of the connection board 12 </ b> C and outputs operating power of 12 V DC to the inverter board 14. The inverter board 14 includes a connector 72, an inverter 57, and a connector 58 connected to the connector 71 of the connection board 12C with a cable (not shown). The inverter board 14 is entirely shielded for safety measures and noise emission measures.

  In the display device 6C, the LVDS converter 56 of the connection board 12C performs LVDS conversion on the digital video signal output from the display control board 11 and input through the connector 51, and outputs the digital video signal. Further, the inverter 57 of the inverter board 14 converts the operating power of DC 12V into the operating power of AC 500V and supplies it to the backlight 64 of the liquid crystal display 13B through the connector 58 and the connector 63. That is, the connection substrate 12C and the inverter substrate 14 are connected to each other so that the electrical characteristics of the liquid crystal display 13B and the display control substrate 11 are matched. Accordingly, the image G displayed on the liquid crystal panel 62B of the liquid crystal display 13B is viewed brightly in the same manner as the display device 6B.

  Also in this display device 6C, the LVDS converter 56 of the connection board 12C converts the digital video signal output from the display control board 11 into a signal of the LVDS standard, and the inverter 57 of the inverter board 14 operates with a DC of 12V. The image G can be displayed on the liquid crystal display 13 </ b> B without changing the configuration of the display control board 11 by converting the working power into the working power for turning on the backlight 64. In this case, since the connection board 12C and the inverter board 14 are configured separately, other types of backlights having different operating power voltages can be turned on only by changing the inverter board 14.

  In addition, this invention is not limited to said structure. For example, as shown in FIG. 7, a display device 6D including a display control board 11A in which the OSC 44 and the switch 45 in the display control board 11 (FIG. 4) are omitted may be employed. In this case, as shown in the figure, the clock signal output from the OSC 55 on the connection board 12A is input to the LCD controller 36 via the connector 51 and the connector 46, so that it can be operated in the same manner as the display device 6A. it can. Moreover, although it described above about the example which connected each connector with the cable, the structure which connects each connector directly can also be employ | adopted, and the structure which connects between each connector using a flexible substrate can also be employ | adopted. . In addition, although the example in which the inverter 57 performs both the conversion from the DC operating power to the AC operating power and the conversion of these voltages has been described above, the converter according to the present invention includes only one of these. Also included is a converter that performs

  In addition, the configuration example using the liquid crystal displays 13, 13A, and 13B as the display unit has been described above, but the display unit in the present invention includes a CRT, a plasma display, a projector, and the like. Moreover, although the example in which the present invention is applied to the pachinko machine 1 has been described above, the gaming machine according to the present invention includes a slot machine, a pinball machine, various arcade games, and the like. Of course, the present invention can be applied to various display devices such as a television device.

1 is a front view of a pachinko machine 1. 1 is a block diagram showing a configuration of a pachinko machine 1. 3 is a block diagram showing a configuration of a display device 6. FIG. It is a block diagram which shows the structure of 6 A of display apparatuses. It is a block diagram which shows the structure of the display apparatus 6B. It is a block diagram which shows the structure of 6 C of display apparatuses. It is a block diagram which shows the structure of display apparatus 6D.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Pachinko machine, 6, 6A, 6B, 6C, 6D ... Display device, 11 ... Display control board, 12, 12A, 12B, 12C ... Connection board, 13, 13A, 13B ... Liquid crystal display, 14 ... Inverter board 34 ... CPU, 36 ... LCD controller, 51,52 ... connector, 53 ... DAC, 54 ... level converter, 55 ... OSC, 56 ... LVDS converter, 57 ... inverter, 62, 62A, 62B ... liquid crystal panel.

Claims (7)

A display unit on which a display element is mounted, a display control unit on which a display control element that performs display control on the display element, and at least the display unit and the display control unit are electrically connected to each other. In a display device including the display unit and a connection unit that electrically connects the display control unit so that the characteristics match,
A sub-connection unit that electrically connects the display unit and the connection unit, and the sub-connection unit includes a converter that converts power or voltage output from the display control unit and outputs the power or voltage to the display unit. On-board display device.   A first connector electrically connected to the display control unit and a second connector electrically connected to the display unit are mounted on the connection unit, and the sub-connection unit and the connection unit The display device according to claim 1, further comprising a connector for electrically connecting the display unit and the sub-connecting unit.   3. The display device according to claim 1, wherein the connection unit includes a clock signal oscillator that generates the display control clock signal and outputs the clock signal to the display control element of the display control unit.   The digital / analog converter which converts the digital signal output from the said display control part into an analog signal, and outputs it to the said display element of the said display part is mounted in the said connection part. The display device according to any one of the above.   The level converter which converts the level of the signal output from the said display control part and outputs it to the said display element of the said display part is mounted in the said connection part. The display device described in 1.   6. The LVDS converter for mounting an LVDS converter that LVDS converts a digital signal output from the display control unit and outputs the digital signal to the display element of the display unit. The display device described in 1.   A gaming machine comprising the display device according to any one of claims 1 to 6.

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