JP2011118511A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device having improved operability to set items displayed on a display screen. <P>SOLUTION: The display device includes a touchpanel 20 which detects the position of an object to be detected with respect to an operation surface for operations as a coordinate position on the operation surface and a distance to the operation surface, and outputs them as object position information indicating the position of the object. The display device displays a display body indicating the set items with which set values can be adjusted on the display screen (S104), and updates the set value of the set items displayed on the display screen according to the distance between the object and the operation surface detected by the touchpanel 20 (S108). <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a display device capable of performing operations on setting items displayed on a display screen in response to a user operation.

  Conventionally, when a flat touch switch provided on a remote control device is touched, a menu screen is displayed on the CRT of the television receiver. In this state, a finger touching the touch switch is moved to an operation area in the touch switch. There is a device that changes the display color of the corresponding item on the menu screen so as to be different from other items (for example, see Patent Document 1).

JP-A-6-78381

  In the configuration described in Patent Document 1, it is necessary to operate according to the menu screen displayed on the display unit by touching the touch switch. For this reason, when changing the setting value of a setting item that can be adjusted, such as brightness adjustment and volume adjustment of the display screen, for example, touch the touch switch to display the menu screen on the display unit and move your finger. After selecting a setting item such as brightness adjustment or volume adjustment of the display screen, it is necessary to operate another switch to confirm the setting item, and then perform an adjustment operation on the setting item. There is a problem that is complicated.

  The present invention has been made in view of the above problems, and an object thereof is to improve operability.

  In order to achieve the above object, the invention according to claim 1 detects the position of the detection target with respect to the operation surface for performing the operation as the coordinate position on the operation surface and the distance from the operation surface, and determines the position of the detection target. Operation detection means for outputting as detection target position information to be displayed, setting item display means for displaying a display body representing a setting item whose setting value can be adjusted on the display screen, detection targets and operation surfaces detected by the operation detection means And a setting value updating means for updating the setting value of the setting item displayed on the display screen in accordance with the distance to the display screen.

  According to such a configuration, the position of the detection target with respect to the operation surface for performing the operation is detected as the coordinate position on the operation surface and the distance from the operation surface, and is output as detection target position information indicating the position of the detection target. An operation detection means is provided to display a display object that represents the setting item whose setting value can be adjusted on the display screen, and the setting value of the setting item displayed on the display screen is updated according to the distance between the detection target and the operation surface. Is done. In other words, a display body representing a setting item whose setting value can be adjusted is displayed on the display screen, and the setting value of the setting item displayed on the display screen is updated according to the distance between the user's finger and the operation surface. The user can adjust the setting value of the setting item simply by moving his / her finger close to or away from the operation surface, thereby improving the operability.

  According to the second aspect of the present invention, when the setting item display means determines that the detection target is detected based on the detection target position information, the display screen corresponding to the coordinate position where the detection target is detected. It is characterized in that a display body representing a setting item is displayed at the upper position.

  According to such a configuration, when it is determined that the detection target is detected based on the detection target position information, the setting item is represented at the position on the display screen corresponding to the coordinate position where the detection target is detected. Since the display body is displayed, the user can recognize that the detection target has been detected, and it is not necessary to always display the display body representing the setting item, and the display screen can be used effectively. .

  According to a third aspect of the present invention, the set value update means determines the set value of the setting item based on the fact that the position of the detection target with respect to the operation surface is not changed more than a predetermined reference period. It is said.

  According to such a configuration, the setting value of the setting item is determined based on the fact that the position of the detection target with respect to the operation surface is not changed for a predetermined reference period or longer. The setting value of the setting item can be confirmed simply by not moving the finger beyond the reference period at the position where the value is reached.

  In the invention according to claim 4, when the setting item display means determines that the detection target is not detected based on the detection target position information, the setting item display means hides the display body representing the setting item. It is characterized by that.

  According to such a configuration, when it is determined that the detection target is not detected based on the detection target position information, the display body representing the setting item is hidden, and thus the detection target is not detected. Can be recognized by the user, and it is not always necessary to display a display body representing the setting item, and the display screen can be used effectively.

  In the invention according to claim 5, the setting item display means draws a display body representing the setting item in a pseudo three-dimensional manner, and responds to the update of the setting value of the setting item by the setting value update means. And a drawing form changing means for changing the drawing form so that the display body drawn in a pseudo-stereoscopic manner appears.

  According to such a configuration, the drawing form is changed so that a pseudo-stereoscopic-drawn display body appears to appear as the setting item setting value is updated, so the user can increase or decrease the setting item setting value. Can be recognized in a pseudo-stereoscopic manner. In other words, the display body representing the setting item can be displayed so as to change three-dimensionally according to the three-dimensional finger movement.

  The invention according to claim 6 specifies a speed at which the detection target approaches the operation surface based on the detection target position information, and a speed at which the detection target approaches the operation surface is equal to or higher than a predetermined reference speed. A display having a display screen when it is determined by the approach speed determining means that the speed at which the detection target approaches the operation surface is greater than or equal to a predetermined reference speed. And switching means for switching on / off the power supply of the unit.

  According to such a configuration, when it is determined that the speed at which the detection target approaches the operation surface is approached at a predetermined reference speed or higher, the power of the display unit having the display screen is switched on or off. The user can perform a switching operation of turning on or off the power of the display unit without touching the operation surface. In addition, dirt on the finger is not attached to the operation surface.

  In order to achieve the above object, the invention according to claim 7 detects the position of the detection target relative to the operation surface for performing the operation as a coordinate position on the operation surface and a distance from the operation surface, and The operation detection means for outputting the detection target position information indicating the position, the speed at which the detection target approaches the operation surface based on the detection target position information, and the speed at which the detection target approaches the operation surface are determined in advance. Displayed when it is determined that the speed at which the detection target approaches the operation surface has approached at a predetermined reference speed or higher by the approach speed determination means, which determines whether or not the vehicle has approached at a reference speed or higher. And switching means for switching power on or off of the display unit having the screen.

  According to such a configuration, when it is determined that the speed at which the detection target approaches the operation surface is approached at a predetermined reference speed or higher, the power of the display unit having the display screen is switched on or off. The user can switch the power of the display unit on or off by simply bringing the finger closer to the operation surface at a reference speed or higher without bringing the finger into contact with the operation surface, thereby improving operability. . In addition, since the user does not need to bring the finger into contact with the operation surface, the finger surface does not adhere to the operation surface.

  Further, as in the invention described in claim 8, the operation detecting means can be a capacitive touch panel that detects a capacitance that changes in accordance with the approach of the detection target to the operation surface.

It is a figure which shows the structure of the display apparatus which concerns on one Embodiment of this invention. It is a figure which shows the structure of an electrostatic capacitance type touch panel. It is a figure for demonstrating the structure of an electrostatic capacitance type touch panel. It is a figure for demonstrating the operation switch displayed on a display screen. It is a flowchart of a control part. It is a figure for demonstrating the display of the operation switch displayed on a display screen. It is a figure for demonstrating the operation switch displayed on a display screen.

  A configuration of a display device according to an embodiment of the present invention is shown in FIG. The display device is configured as a navigation device mounted on a vehicle. The display device includes a display unit 10, a touch panel 20, a power supply circuit 30, a drawing circuit 40, a map data input device 50, a DVD player 51, a TV tuner 52, a speaker 60, and a control unit 70.

  The display unit 10 has a display such as a liquid crystal, and displays an image input from the drawing circuit 40 on the display.

  The touch panel 20 is provided so as to overlap the front surface of the display screen of the display unit 10, and outputs a signal corresponding to a user operation on the operation surface to the control unit 70. The touch panel 20 can perform operations on setting items displayed on the display screen of the display unit 10.

  The power supply circuit 30 supplies a constant voltage to the display unit 10 and switches on or off the power supplied to the display unit 10 in accordance with a signal input from the control unit 70.

  The map data input device 50 is a device that reads map data stored in a storage medium such as a CD, DVD, or HDD. The map data includes road data, background data, facility data, and the like.

  The DVD player 51 reads and reproduces music data stored in a storage medium such as a CD or DVD, and outputs an audio signal and a video signal to the drawing circuit 40.

  The TV tuner 52 receives a television broadcast wave and outputs an audio signal and a video signal to the drawing circuit 40.

  The drawing circuit 40 synthesizes an image to be displayed on the display unit 10 from various information input from the map data input device 50, the DVD player 51, the TV tuner 52, and the control unit 70, and outputs the synthesized image to the display unit 10. To do.

  The speaker 60 outputs sound corresponding to the sound signal input from the control microcomputer 70.

  The control unit 70 is configured as a computer including a CPU, a RAM, a ROM, an I / O, and the like, and the CPU performs various processes according to a program stored in the ROM. As processing of the control unit 70, the vehicle position is specified based on information for specifying a current position input from a position detection device (not shown), and map data around the vehicle position is obtained from the map data input device 50. A map display process for reading out and outputting an image in which the vehicle position mark is superimposed on a map around the vehicle position to the drawing circuit 40, a process for playing the music specified by the user operation on the DVD player 51, and a user operation For example, the TV tuner 52 receives the received TV broadcast.

  FIG. 2 shows the configuration of the touch panel 20. The touch panel 20 according to the present embodiment is configured as a capacitive touch panel that detects a capacitance that changes according to the approach of a detection target to the operation surface.

  The touch panel 20 includes a transparent substrate (not shown) on which a plurality of vertical transparent electrodes Ta and a plurality of horizontal transparent electrodes Tb are formed, and a detection circuit 20a connected to each of the transparent electrodes Ta and Tb. ing.

  As shown in FIG. 3, when the user's finger F as a detection target approaches the operation surface S of the touch panel 20, a change in capacitance occurs in each of the transparent electrodes Ta and Tb nearby. The detection circuit 20a three-dimensionally detects the position of the detection target with respect to the operation surface S from the change in capacitance. That is, the detection circuit 20a detects the position of the detection target with respect to the operation surface S as a coordinate position on the operation surface S and a distance from the operation surface S based on signals input from the transparent electrodes Ta and Tb. Is output to the control unit 70 as detection target position information indicating the position. In addition, this touch panel 20 can detect the position of a detection target by setting a range of about 20 to 30 millimeters (mm) from the operation surface S as a reaction region.

  When the ignition switch of the vehicle is turned on, the navigation device is in an operating state, and the detection circuit 20a of the touch panel 20 outputs detection target position information indicating the position of the detection target to the control unit 70. In addition, the control unit 70 acquires detection target position information periodically (for example, every 50 milliseconds) from the detection circuit 20a of the touch panel 20, and starts processing for specifying the detection target position.

  As shown in FIG. 5, the navigation device includes an operation switch (shown as contrast in the figure) for adjusting the brightness of the display screen when the user's finger approaches the upper right area of the operation surface S of the touch panel 20. When the user's finger approaches the lower right area of the operation surface S of the touch panel 20, an operation switch (shown as a map scale in the figure) for enlarging or reducing the map display is displayed. When the button approaches the upper left area of the operation surface S of the touch panel 20, an operation switch (shown as brightness in the figure) for brightness of the display screen is displayed, and the user's finger shows the lower left of the operation surface S of the touch panel 20 When approaching this area, an operation switch for adjusting the volume (shown as volume in the figure) is displayed. Then, it is possible to adjust the set value according to the operation on each operation switch.

  Next, processing in the case of adjusting the brightness of the display screen in response to a user operation on an operation switch (in the figure, indicated as contrast) for adjusting the brightness of the display screen will be described.

  FIG. 5 shows a flowchart of this process. When the ignition switch of the vehicle is turned on in response to the driver's operation, the navigation device is in an operating state, and the control unit 70 displays a map display screen, a music playback screen, a television reception screen, etc. in accordance with the user operation. The processing to be displayed on the display screen is started. Moreover, the control part 70 implements the process shown in FIG. 5 in parallel with these processes.

  First, the detection target position information is periodically acquired from the touch panel 20, and it is determined whether or not the detection target is detected based on the detection target position information (S100).

  Here, when the detection target is not detected by the touch panel 20, the determination in S100 is NO, and the determination in S100 is repeated.

  If the user brings his / her finger close to the operation surface S of the touch panel 20 and the touch panel 20 detects the user's finger as a detection target and determines that the detection target is detected based on the detection target position information, the determination in S100 is YES. Next, the speed at which the detection target approaches the operation surface S is specified based on the detection target position information, and whether the speed at which the detection target approaches the operation surface S approaches a predetermined reference speed or higher. It is determined whether or not (S101). The speed at which the detection target approaches the operation surface S is the distance between the detection target specified from the detection target position information acquired last time and the operation surface S, and the detection target specified from the detection target position information acquired this time. The difference from the distance to the operation surface S can be obtained by dividing by the collection period of the detection target position information.

  Here, when the user approaches the operation surface S relatively slowly, and the approaching speed is less than the reference speed, the determination in S101 is NO, and then the detection target position information is acquired again ( S102).

  Next, the drawing circuit 40 is instructed to display an operation switch (contrast adjustment) corresponding to the coordinates (S104). Specifically, the position of the detection target is specified from the detection target position information as a coordinate position on the operation surface S and a distance from the operation surface S, and an operation switch of a setting item predetermined according to the coordinates is displayed. The drawing circuit 40 is instructed. Further, the fact that an operation switch representing contrast adjustment is displayed is guided by voice. Here, it is assumed that the map screen is displayed on the display screen of the display unit 10, the detection target is detected in the upper right area of the operation surface S of the touch panel 20, and an operation switch representing contrast adjustment is displayed on the map screen. It shall be displayed overlapping the upper right area.

  In the present embodiment, an image in which the operation switch SW representing contrast adjustment is drawn in a pseudo three-dimensional manner is displayed so as to be superimposed on a map display screen or the like. Specifically, as shown in FIG. 6, a plurality of circular operation switches SW having different radii are overlapped in order from the smallest radius, with the centers thereof being gradually shifted, so that the operation switches SW are pseudo-solid. It is designed to be drawn and displayed.

  Next, it is determined whether or not the detection target is moving (S106). Here, it is determined whether or not the detection target is moving by comparing the position of each detection target specified from the detection target position information acquired last time and the detection target position information acquired this time for a certain period of time.

  Here, when the user moves the finger away from or close to the operation surface S, the determination in S106 is YES, and then the contrast setting value is updated according to the distance between the detection target and the operation surface ( S108). In this embodiment, the contrast setting value increases as the user moves the finger closer to the operation surface S, and the contrast setting value decreases as the user moves the finger away from the operation surface S. On the contrary, the contrast setting value may be decreased as the user moves the finger closer to the operation surface S, and the contrast setting value may be increased as the user moves the finger away from the operation surface S.

  Next, the drawing mode of the operation switch is changed according to the update of the contrast setting value (S110). Specifically, in S108, the drawing mode of the operation switch SW representing the contrast adjustment is changed so that the increase / decrease in the contrast adjustment set value changes according to the update of the contrast set value. In the present embodiment, as shown in FIG. 7, when the user moves his / her finger away from the upper right area of the operation surface S, the number of operation switches SW representing contrast adjustment decreases, and the user moves to the upper right area of the operation surface S. When the finger is brought closer, the number of operation switches SW representing contrast adjustment is increased in the upper right area of the display screen, and the display form is changed so that an image representing the operation switches SW appears. Further, the drawing form is changed so as to display a value indicating the contrast setting value (shown as 10 in the figure).

  Next, it is determined whether or not the detection target has stopped for a certain time (S112). Specifically, the position of each detection target specified from the detection target position information acquired last time and the detection target position information acquired this time is monitored for a predetermined time, and the position of the detection target is a predetermined range for a predetermined time or more. It is determined whether or not it is inside.

  Here, when the position of the detection target is not within a predetermined range for a certain time or more, the determination in S112 is NO and the process returns to S108.

  Therefore, the contrast setting value is updated according to the distance between the detection target and the operation surface, and the drawing mode of the operation switch SW representing the contrast adjustment changes so that the increase or decrease of the contrast changes.

  In addition, when the user stops the finger movement for a certain period of time when the brightness of the display screen is in a desired setting state, the determination in S112 is YES, and then the contrast setting value is confirmed and contrast adjustment is performed. The display of the operation switch to be displayed is not displayed (S114). Further, the fact that the display of the operation switch indicating the contrast adjustment is not displayed is guided by voice, and this processing is terminated.

  When the contrast setting value is thus determined and the display of the operation switch indicating contrast adjustment is not displayed, the contrast setting value is not changed even if the user moves his / her finger.

  If an operation switch indicating contrast adjustment is displayed in S104 and the user stops the finger movement for a certain period of time, the determination in S106 is NO and the process proceeds to S114. That is, the operation switch representing the contrast adjustment is not displayed without updating the contrast setting value and changing the drawing form of the operation switch.

  If the user suddenly brings his / her finger close to the operation surface S and the approaching speed is equal to or higher than the reference speed, the determination in S101 is YES, and then the drawing circuit 40 and the power supply circuit 30 are instructed to stop output. (S116). As a result, the drawing circuit 40 stops image output to the display unit 10, and the power supply circuit 30 stops supplying power to the display unit 10. Therefore, the display unit 10 is turned off.

  Next, again, similarly to S101, it is determined whether or not the speed at which the detection target approaches the operation surface S approaches at or above a predetermined reference speed (S118).

  Here, when the user approaches the operation surface S relatively slowly and the approaching speed is less than the reference speed, the determination in S118 is NO and the determination in S118 is repeated.

  If the user suddenly brings his / her finger close to the operation surface S and the approaching speed is equal to or higher than the reference speed, the determination in S118 is YES, and then the rendering circuit 40 and the power supply circuit 30 are instructed to start output. (S120). As a result, the drawing circuit 40 starts image output to the display unit 10, and the power supply circuit 30 resumes power supply to the display unit 10. Accordingly, the display unit 10 is turned on.

  According to the configuration described above, the touch panel that detects the position of the detection target with respect to the operation surface for performing the operation as the coordinate position on the operation surface and the distance from the operation surface, and outputs the detection target position information indicating the position of the detection target. 20, a display body representing a setting item whose setting value can be adjusted is displayed on the display screen, and the setting value of the setting item displayed on the display screen is updated according to the distance between the detection target and the operation surface. . In other words, a display body representing a setting item whose setting value can be adjusted is displayed on the display screen, and the setting value of the setting item displayed on the display screen is updated according to the distance between the user's finger and the operation surface. The user can adjust the setting value of the setting item simply by moving his / her finger close to or away from the operation surface, thereby improving the operability.

  When it is determined that the detection target is detected based on the detection target position information, a display body representing the setting item is displayed at a position on the display screen corresponding to the coordinate position where the detection target is detected. Therefore, it is possible to make the user recognize that the detection target has been detected, and it is not necessary to always display the display body representing the setting item, and the display screen can be used effectively.

  In addition, since the setting value of the setting item is determined based on the fact that the position of the detection target with respect to the operation surface is not changed for a predetermined reference period or more, the user can set the setting value of the setting item at a desired value. The setting value of the setting item can be determined simply by keeping the finger from moving beyond the reference period.

  In addition, when it is determined that the detection target is not detected based on the detection target position information, the display body representing the setting item is hidden, so that the user recognizes that the detection target is not detected. In addition, it is not always necessary to display a display body representing a setting item, and the display screen can be used effectively.

  In addition, since the display form is changed so that the display object drawn in a pseudo-stereoscopic manner appears in response to the update of the setting value of the setting item, the user can recognize the increase / decrease in the setting value of the setting item in a pseudo-stereoscopic manner. can do.

  In addition, when it is determined that the speed at which the detection target approaches the operation surface is greater than or equal to a predetermined reference speed, the power of the display device having the display screen is switched on or off, so that the user moves the finger on the operation surface. It is possible to perform the switching operation of turning on or off the power of the display device only by bringing the finger close to the operation surface at a reference speed or higher without touching the operation surface, and operability can be improved.

  In addition, this invention is not limited to the said embodiment, Based on the meaning of this invention, it can implement with a various form.

  For example, in the above embodiment, when the detection target is detected, the adjustable setting item is displayed at the coordinate position where the detection target is detected on the display screen, regardless of whether the detection target is detected, You may make it always display the setting item which can be adjusted.

  In the above embodiment, the setting value of the setting item is determined based on the fact that the position of the detection target with respect to the display screen is not changed for a predetermined reference period or more. However, the present invention is not limited to such a configuration. For example, the setting value of the setting item may be determined by operating a separately provided switch. In this case, for example, the setting value of the setting item can be adjusted with the index finger, and a separate switch can be operated with a finger other than the index finger. Further, the setting value of the setting item may be determined based on determining that the detection target moves away at a predetermined reference speed or higher based on the detection target position information. In this case, for example, the set value updated immediately before the detection target is not detected can be determined.

  Moreover, in the said embodiment, although the touch panel 20 provided on the front surface of the display screen of the display part 10 was operated, the structure which operates the setting item displayed on the display screen of the display part 10 was shown, The display unit 10 and the touch panel 20 may be configured separately.

  Further, in the above embodiment, when it is determined that the detection target has approached the operation surface S of the touch panel 20 and it has been determined that the detection target has approached the operation surface S at a reference speed or higher, the detection target and the operation surface The setting value of the setting item displayed on the display screen is updated according to the distance between the setting item and the setting value of the setting item when the detection target touches the operation surface, for example, to prevent erroneous detection. May be updated, and the setting value of the setting item displayed on the display screen may be updated according to the distance between the detection target and the operation surface.

  Further, in the above-described embodiment, the configuration in which the operation switch representing the contrast adjustment is displayed as the display body representing the setting item is shown, but the present invention is not limited to the operation switch, and is set using an icon, a character, a number, or the like. You may make it display the display body showing an item.

  In the above embodiment, when the user moves his finger away from the upper right area of the operation surface S, the number of operation switches SW representing contrast adjustment decreases, and when the user brings his finger closer to the upper right area of the operation surface S, The configuration in which the number of operation switches SW representing contrast adjustment is increased in the upper right area of the display screen is shown. Conversely, when the user moves his finger away from the upper right area of the operation surface S, the operation switch SW representing contrast adjustment is displayed. The number of operation switches SW indicating contrast adjustment may be decreased in the upper right area of the display screen when the user increases his / her finger to the upper right area of the operation surface S.

  Further, in the above embodiment, the plurality of circular operation switches SW having different radii are drawn in a pseudo-stereoscopic manner so that the operation switches SW are overlapped in order from the one with the smallest radius while shifting the center little by little. Although displayed, it is not limited to such a display form.

  In the above-described embodiment, the configuration for adjusting the setting value of the setting item is shown by taking each setting item of contrast, map scale, brightness, and volume as an example. However, the present invention is not limited to these setting items. For example, adjustments such as temperature adjustment of an air conditioner and air volume adjustment of the air conditioner may be performed.

  The correspondence between the configuration in the above embodiment and the configuration of the claims will be described. The touch panel 20 corresponds to the operation detection unit, S104 corresponds to the setting item display unit, and S108 corresponds to the setting value update unit. S110 corresponds to the drawing form changing means, S101 corresponds to the approach speed determining means, and S116 and S120 correspond to the switching means.

DESCRIPTION OF SYMBOLS 10 Display part 20 Touch panel 30 Power supply circuit 40 Drawing circuit 50 Map data input device 51 DVD player 52 TV tuner 60 Speaker 70 Control part

Claims (8)

A display device capable of performing operations on setting items displayed on a display screen in accordance with a user operation,
Operation detecting means for detecting a position of a detection target with respect to an operation surface for performing the operation as a coordinate position on the operation surface and a distance from the operation surface, and outputting as detection target position information indicating the position of the detection target; ,
A setting item display means for displaying a display body representing a setting item whose setting value can be adjusted on the display screen;
Setting value updating means for updating a setting value of the setting item displayed on the display screen according to a distance between the detection target detected by the operation detecting means and the operation surface. Display device.   When the setting item display means determines that the detection target has been detected based on the detection target position information, the setting item display means has a position on the display screen corresponding to the coordinate position at which the detection target is detected. The display device according to claim 1, wherein a display body representing a setting item is displayed.   3. The setting value update unit determines the setting value of the setting item based on a fact that the position of the detection target with respect to the operation surface is not changed for a predetermined reference period or longer. The display device described in 1.   The said setting item display means hides the display body which represents the said setting item, when it determines with the said detection target becoming non-detection based on the said detection target position information. The display device according to any one of 1 to 3. The setting item display means is configured to draw a display body representing the setting item in a three-dimensional manner,
In accordance with the update of the setting value of the setting item by the setting value updating unit, the image forming apparatus includes a drawing form changing unit that changes the drawing form so that the display body drawn in a pseudo-stereoscopic manner appears to emerge. The display device according to any one of claims 1 to 4. The speed at which the detection target approaches the operation surface is specified based on the detection target position information, and whether the speed at which the detection target approaches the operation surface has approached at a predetermined reference speed or higher. An approach speed judging means for judging;
Switching means for switching on or off the power of the display unit having the display screen when it is determined by the approach speed determining means that the speed at which the detection target approaches the operation surface approaches a predetermined reference speed or more; The display device according to claim 1, further comprising: A display device capable of performing operations on setting items displayed on a display screen in accordance with a user operation,
Operation detecting means for detecting a position of a detection target with respect to an operation surface for performing the operation as a coordinate position on the operation surface and a distance from the operation surface, and outputting as detection target position information indicating the position of the detection target; ,
The speed at which the detection target approaches the operation surface is specified based on the detection target position information, and whether the speed at which the detection target approaches the operation surface has approached at a predetermined reference speed or higher. An approach speed judging means for judging;
Switching means for switching on or off the power of the display unit having the display screen when it is determined by the approach speed determining means that the speed at which the detection target approaches the operation surface approaches a predetermined reference speed or more; A display device comprising:   The said operation detection means is a capacitance-type touch panel which detects the electrostatic capacitance which changes according to the approach of the said detection target with respect to the said operation surface, The one of Claim 1 thru | or 7 characterized by the above-mentioned. Display device.

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