JP2010165174A - Display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display for displaying a region requiring cleaning of a screen and cleaning the screen efficiently. <P>SOLUTION: The display having a screen for display includes: a display section including a touch panel where data are input by touching the screen; a section for counting the number of touch times for acquiring position information indicating a touched region on the screen and updating the number of touch times of the touched region based on the position information; a cleaning state determination section for setting only a region of which the number of touch times is not less than a prescribed value to a region to be cleaned; and a display designation section for switching the setting of the display section to a cleaning mode for displaying the region to be cleaned on the surface. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a display device provided with a touch panel.

  At present, display devices having a touch panel are widely used in information terminals such as portable electronic devices. The touch panel can input directly from the screen by bringing a finger or a touch pen into contact with the screen displayed on the display device. In a display device provided with a touch panel, the screen becomes dirty due to foreign matter adhering from a finger, and thus the screen needs to be cleaned.

  As a method of cleaning a screen in a display device provided with a touch panel, for example, there is one shown in Patent Document 1 below. In the cleaning method of Patent Document 1, when a screen is cleaned, a new screen is displayed sequentially from a location where the screen is wiped, and the screen is left unwiped or forgetting to wipe.

Japanese Patent Laid-Open No. 2005-301568

  By the way, the screen of a display device provided with a touch panel has a region that is easily soiled and a region that is not so soiled at the position of the screen. For example, display buttons for input by a touch is displayed on the screen, the area where the display button is displayed there is inevitably soiled tends to be touched frequently with a finger. On the other hand, places other than the area where the display buttons are displayed tend to be less likely to be stained because they are less touched with a finger than the areas where the display buttons are displayed. For this reason, when the user cleans the screen, it is not always necessary to clean the entire screen, and it is sufficient to clean only the area where the screen is easily soiled. However, when the user is using the display device or cleaning the screen, the user cannot visually determine where on the screen is dirty enough to require cleaning. If only a dirty area of the screen is displayed when the screen is cleaned, it is possible to avoid the trouble of cleaning the entire screen and it is convenient to use, but such a display device has not been proposed.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a display device capable of displaying an area that is easily soiled and requires cleaning.

The present invention is a display device having a screen for displaying,
A display unit provided with a touch panel capable of inputting by touching the screen;
A touch number counting unit that acquires position information indicating a touched area of the screen and updates the number of touches of the touched area based on the position information;
A cleaning state determination unit that sets only a region where the number of touches is equal to or greater than the specified value as a region to be cleaned;
And a display instruction unit that switches the setting of the display unit to a cleaning mode for displaying the cleaning target area on the screen.

  When the user touches the screen with a finger or a touch pen, the display device of the present invention detects the position information and the number of touches of the touched area of the screen, and is frequently touched based on the touch count of the touched area. The area to be cleaned can be set as the area to be cleaned, and the area to be cleaned can be displayed on the screen. The user can determine which area on the screen is dirty by visually recognizing the area to be cleaned displayed on the screen. In addition, the user only needs to clean the area to be cleaned displayed on the screen, and does not need to clean the entire screen. For this reason, it is possible to focus on cleaning only the areas that are easily soiled on the screen, and it is not necessary to frequently clean the areas that are not easily soiled, so that the entire screen can be efficiently cleaned.

  ADVANTAGE OF THE INVENTION According to this invention, the area | region which needs the cleaning of a screen can be displayed, and the display apparatus which can clean a screen efficiently can be provided.

It is a block diagram which shows the schematic structure of a display apparatus. It is a figure which shows typically the state which planarly viewed the screen of the display apparatus. It is a figure which shows an example of a structure of a display control part. It is a figure which shows the example of cleaning status information. It is a flowchart including the procedure which sets the cleaning object area | region of a screen using a display apparatus. 6 is a flowchart showing a procedure following the procedure shown in FIG. 5. It is a figure explaining the state which is displaying the cleaning object area | region on the screen of a touchscreen. It is a figure explaining other examples when displaying a cleaning object field on a screen in cleaning mode. It is a figure which shows the example which changes the update process of the frequency | count of a touch according to the area of the touch with respect to a screen. It is a figure explaining the state which the finger touching the screen is moving on the screen. It is a flowchart which shows the procedure which sets a part of screen to an insensitive state. It is a flowchart which shows an example of the procedure of operation | movement in a power saving mode.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram illustrating a schematic configuration of a display device. FIG. 2 is a diagram schematically illustrating a state in which the screen of the display device is viewed in plan.
The display device 10 includes a display unit 12 provided with a touch panel 14 that can be input by a user touching the screen.

  The display device 10 includes a display control unit 20 that controls display of the screen of the display unit 12 and a storage unit 16 that can store cleaning state information that associates the number of touches for each touched area in the screen. A specific example of the cleaning state information will be described later.

  The display device 10 can be applied as long as the user inputs from the screen using the touch panel 14. For example, the display device 10 can be applied to a screen display portion of a portable electronic device such as a digital camera, a mobile phone, or a PDA (Personal Digital Assistants).

  The configuration of the touch panel 14 can be an analog resistance film type, for example. In the analog resistance film method, a transparent film such as PET provided on the screen surface side and a glass substrate are arranged in parallel, and a transparent conductive film (for example, ITO) is formed on each surface of the transparent film and the glass substrate facing each other. ing. When the user touches the screen with his / her finger, the transparent film side and the transparent conductive film on the glass substrate side of the part pressed by the finger come into contact with each other, and electricity is energized and touched by outputting this electricity as information Can be recognized. The configuration of the touch panel 14 is not particularly limited.

  As shown in FIG. 2, the screen of the touch panel 14 displays information for visually guiding the user about operation items for executing a program such as a computer connected to the display device 10. On the screen, a touch input area 14a in which an input can be performed by touching with a finger or a touch pen is displayed so that a user can select a desired operation item. The touch input area 14a is, for example, a button or icon displayed on the screen.

  The touch panel 14 includes a detection unit A that detects a touch on the screen. The detection unit A has a plurality of detection areas that divide the screen. In FIG. 2, each area indicated by a1, a2,. Each of the plurality of detection areas has position information set based on the position with respect to the screen. As the position information, for example, information represented by position coordinates (x, y) when the screen is represented by a two-dimensional plane composed of xy can be used. When the user touches the screen of the touch panel, position information of the detection area at the touched position is generated, and a detection signal including the position information is output from the touch panel 14 to the display control unit 20. When the screen is touched, an area on the screen corresponding to one or a plurality of detection areas where the touch is detected at the same time is defined as the touched area.

  FIG. 3 is a diagram illustrating an example of the configuration of the display control unit. The display control unit 20 includes a touch count counting unit 22, a cleaning state determination unit 24, a touch area determination unit 26, a cleaning support display creation unit 27, and a display instruction unit 28.

  The touch count counting unit 22 acquires the position information of the touched area and updates the touch count of the touched area based on the position information. When the touch count of the touched area is updated, the positional information of the touched area and the updated touch count are output to the cleaning state determination unit 22.

  Specifically, when the display device 10 is initially activated, the number of touches in all detection areas is set to zero. When the screen is touched, the number of touches is updated to once for all detection areas included in the touched area. Then, the position information of the detection area where the number of touches has been updated is output to the cleaning state determination unit 24 together with the number of touches. Similarly, every time the screen is touched, the number of touches of the detection area included in the touched area is updated. Further, when the display device 10 determines that the screen has been cleaned, the display device 10 updates the number of touches of the detection area corresponding to the cleaned region to zero.

  Display device 10 includes a normal mode for displaying an operation item for causing a program to be executed on a screen, and a cleaning mode for displaying a region (cleaning target region) recommended as a target to be cleaned when the screen is cleaned.

  The cleaning state determination unit 24 acquires the touched area and the updated number of touches of the touched area from the touch count counting unit 22. And the cleaning state determination part 24 produces the cleaning state information which linked | related the frequency | count of a touch for every area | region where the screen was touched. The cleaning state information is stored in the storage unit 16.

  FIG. 4 is a diagram illustrating an example of the cleaning state information. As shown in FIG. 4, as cleaning state information, position information (x, y) and the number of touches n1 to n4 (n1 to n4 are natural numbers including 0) for each of the detection areas a1 to a4. Use data associated with each other. The cleaning state information may further include a cleaning necessity determination flag that is set to ON / OFF based on the number of touches for each of the detection areas a1 to a4.

  When the cleaning state determination unit 24 determines that the number of touches in the touched area is equal to or greater than the specified value, the cleaning state determination unit 24 sets only the area where the number of touches is equal to or greater than the specified value as the cleaning target area. For example, when the specified value is set to 5 times, if the cleaning state determination unit 24 determines that the number of touches of the detection area a3 included in the touched area based on the cleaning state information is 5 times or more, the detection is performed. The cleaning necessity determination flag corresponding to the area a3 is set to ON, and the detection area a3 is set as a cleaning target area. At this time, the cleaning state determination unit 24 keeps the cleaning necessity determination flag OFF for other detection areas where the number of touches is less than five, and does not set the area to be cleaned. It should be noted that the user himself / herself may set a desired numerical value as the prescribed value for the number of touches. Alternatively, a different number of touches may be set for each of the plurality of levels, and the number of touches set to a level selected in advance among the plurality of levels may be set as a specified value.

  As in the touch input area 14a displayed on the screen, an area frequently touched by a finger by the user frequently updates the number of touches in the touched area, and as a result, compared to an area other than the touch input area. This makes it easier to set the area to be cleaned.

  The display instructing unit 28 switches the setting of the display unit 12 to the cleaning mode for displaying the cleaning target area when an instruction signal input by the user or a signal to change to the cleaning mode is input. Further, the display instruction unit 28 returns the setting from the cleaning mode to the normal mode when an instruction signal to end the cleaning mode is input in a state where the display device 10 is set to the cleaning mode. Further, in response to an input from the cleaning support display creating unit 27, the display instruction unit 28 controls the display unit 12 to perform a display for assisting the user's cleaning in addition to the display of the cleaning target area in the cleaning mode. . The function of the cleaning support display creation unit 27 will be described later.

  The touch area determination unit 26 defines the number of detection areas in which touches are simultaneously detected as a touch area, and compares the size of the touch area with a preset range to determine what is touched on the screen. To determine. Here, examples of the object that touches the screen include human fingers, input means such as a touch pen, and cloth that wipes the screen surface during cleaning. A method for determining the touch area will be described later.

  FIG. 5 is a flowchart including a procedure for setting an area to be cleaned on the screen using the display device. FIG. 6 is a flowchart showing a procedure following the procedure shown in FIG. In the following procedure, the configuration of the display device 10 that has already been described with reference to FIG. 1 and the like is referred to as appropriate, and the members and functions that have already been described are not described again and are omitted or simplified.

  First, the energization state of the touch panel 14 is turned on (step S1). At this time, operation items are displayed on the screen of the touch panel 14.

  The display device 10 always detects the presence or absence of a touch on the screen of the touch panel 14 based on a detection signal from the detection area (step S2).

  When the screen is touched, a detection signal including position information is input to the touch count counting unit 22 from a detection area included in the touched area. The touch count counting unit 22 updates the touch counts of all detection areas included in the touched region (step S3). Position information of the detection area included in the touched area and the number of touches for each detection area are input to the cleaning state determination unit 24.

  The cleaning state determination unit 24 creates cleaning state information, and determines whether there is a detection area where the number of touches is a specified value (for example, five times) or more based on the cleaning state information (step S4). If there is no detection area where the number of touches is equal to or greater than the specified value, the state of detecting the presence or absence of touch on the screen is maintained as it is.

  The cleaning state determination unit 24 stores the cleaning state information in the storage unit 16. You may memorize | store in the memory | storage part 16 whenever the frequency | count of a touch of cleaning status information is updated. Alternatively, the cleaning state information may be stored in the storage unit 16 before and after switching between the normal mode and the cleaning mode.

  If there is a detection area in which the number of touches is equal to or greater than a specified value, an area corresponding to the detection area on the screen is set as a cleaning target area based on the position information of the detection area that is equal to or greater than the specified value (step S5 ).

  The cleaning state determination unit 24 notifies the display instruction unit 28 of the position information of all the detection areas set in the cleaning target area (step S6). When any one of the detection areas is set as the cleaning target area, the display device 10 displays a message notifying the user that the cleaning target area exists and a message prompting the user to execute the cleaning mode on the screen. You may let them.

  Next, an instruction signal for executing the cleaning mode is detected (step S7). When there is no instruction signal for executing the cleaning mode, the detection of the presence / absence of touch on the screen is continued by the touch panel, similarly to the procedure from step S2 to step S5. Note that, when the cleaning target area exists, the display instruction unit 28 may immediately switch the screen to the setting of the cleaning mode without waiting for reception of an instruction signal for executing the cleaning mode.

  When receiving the instruction signal for executing the cleaning mode, the display instruction unit 28 switches the setting of the display unit 12 to the cleaning mode and displays the cleaning target area on the screen (step S8).

  FIG. 7 is a diagram illustrating a state in which a cleaning target area is displayed on the screen of the touch panel. On the screen, the cleaning target area D is displayed so as to be visually distinguishable from other areas other than the cleaning target area D. As a display method of the cleaning target area D, for example, there is a method of displaying a screen in which the display color of the cleaning target area D is changed with respect to the display colors of other areas. Alternatively, as another display method, there is a method of displaying a screen in which a boundary line is combined with the cleaning target region D and another region. The method for displaying the cleaning target area D is not particularly limited, and the cleaning target area D can be appropriately changed as long as it can be visually identified on the screen relative to other areas.

  Next, in the state where the setting of the display unit 12 is set to the cleaning mode, the touched area of the screen is determined based on the detection signal from the detection area of the touch panel 14. Even in the cleaning mode, as in the normal mode, the position of the touched area is determined based on the position information of the detection area of the touch panel 14. In the state where the cleaning mode is set, it is considered that the user performs cleaning by touching the screen with a finger or cloth and wiping it. Therefore, the display device 10 determines that the touched area is the area where the cleaning has been performed in the cleaning mode. Specifically, the cleaning state determination unit 24 acquires a detection signal from the detection area of the touch panel 14 in the cleaning mode. Then, based on the position information included in the detection signal, when compared with the position information of the detection area included in the cleaning target area, and the position information matches, the detection area corresponding to the matched position information is determined as the cleaning target area. Release from. At this time, the number of touches in the detection area corresponding to the coincident position information is rewritten to zero. In this way, when the touched area overlaps with the cleaning target area, the setting of the cleaning target area of the overlapping area can be canceled (step S10).

  When the setting of the cleaning target area is canceled, the screen display is updated for the canceled area (step S11). For example, when the display color of the area to be cleaned is changed from the display color of the other area and displayed, the display color of the canceled area is changed to the display color of the other area or the cleaned area. Change the display color to indicate that there is something.

  A procedure for determining whether or not the cleaning is completed is executed (step S12). If the cleaning is not completed, the setting of the display unit 12 is continuously maintained in the cleaning mode.

  When the cleaning state determination unit 26 detects that all the settings of the area to be cleaned on the screen have been canceled, the display instruction unit 28 executes control to cancel the cleaning mode and return to the normal mode (step S13). In addition, the display instruction | indication part 28 may perform control which returns to normal mode according to the instruction | indication signal which completes the cleaning mode input from the user.

  FIG. 8 is a diagram illustrating another example when the cleaning target area is displayed on the screen in the cleaning mode. As shown in FIG. 8, when a plurality of cleaning target areas D are separated and displayed on the screen, the cleaning support display creation unit 27 passes through all the cleaning target areas D at least once. Is calculated. Then, the calculated line L can be displayed on the display unit 12 via the display instruction unit 28.

  The cleaning support display creation unit 27 acquires position information of each of the plurality of cleaning target areas D based on the cleaning state information, and calculates position information of the line L based on the acquired position information. Then, the position information of the line L calculated by the cleaning support display creation unit 27 is read to the display instruction unit 28, and the line L is displayed on the display unit 12 together with the cleaning target region D via the display instruction unit 28 when the cleaning mode is set. Let The line L to be calculated is determined on the condition that, for example, the cleaning target areas D can be connected as short as possible and the lines L do not intersect as much as possible.

  The user can visually recognize a single line L displayed together with the area to be cleaned on the screen, and can move the finger or cloth along the line L on the screen to clean the area to be cleaned without omission. In addition, since the line L is single, it is possible to guide the user to be cleaned not to perform an operation of simultaneously touching different areas of the screen. In this way, even if the touch panel is a detection method in which two points on the screen cannot be detected at the same time, the user can accurately detect the cleaned area by cleaning the screen along the line L.

  As illustrated in FIG. 8, the cleaning support display creation unit 27 may change the display format of the overlapping portion between the cleaning target area D and the single line L according to the number of touches of the cleaning target area D. . For example, the line L of the overlapping portion between the cleaning target region D and the single line L can be highlighted and displayed. Since it is considered that a large number of touches of the cleaning target area D are dirty as compared with a small number of touches, the display device 10 indicates that the line L passing through the cleaning target area D indicates a large number of touches of the cleaning target area D. The thickness is changed in proportion to the thickness. By visually recognizing the line L, the user can grasp not only the trajectory for cleaning but also the degree of dirt in each of the cleaning target areas D.

  The method for changing the display format of the overlapping portion between the cleaning target region D and the single line L is not particularly limited, and may be a method for changing the display color of the line L or a range visually recognizable on the screen. If present, the display format of the overlapping portion may be changed using other methods.

FIG. 9 is a diagram illustrating an example in which the update processing of the number of touches is changed according to the touch area on the screen.
The touch area determination unit 26 defines the number of detection areas as the touch area based on position information of one or more detection areas included in the touched area on the screen. Then, by comparing the size of the touch area with a preset range, it is determined what the object that touched the screen is.

  As shown in FIG. 9, generally, an input means such as a touch pen has a smaller touch area than a finger. Here, when the touch area corresponds to one detection area, the touch area determination unit 26 recognizes the object touching the screen as a touch pen. When the screen is touched with a touch pen, the screen is less likely to get dirty than a finger. For this reason, when the touch area determination unit 26 recognizes an object touching the screen as a touch pen, the touch area counting unit 22 provides an instruction signal to prohibit the update of the number of touches because the object touched on the touch count counting unit 22 is a touch pen. The touch count counting unit 22 performs a process of not updating the number of touches for the touched region based on an instruction signal that prohibits the update of the touch count. The display device 10 may control the display unit 12 via the display instruction unit 28 to display information indicating that the touched object is a touch pen on the screen.

  When the touch area corresponds to four detection areas, the touch area determination unit 26 recognizes the object touching the screen as a finger. When the screen is touched with a finger, the screen is more easily stained than a touch pen. For this reason, when the touch area determination unit 26 recognizes the object touching the screen as a finger, the touch number counting unit 22 permits the update of the number of touches because the object touched by the touch frequency counting unit 22 is a finger. The touch count counting unit 22 updates the number of touches for the touched area according to the normal procedure already described. Note that the display device 10 may control the display unit 12 via the display instruction unit 28 and display information indicating that the touched object is a finger on the screen.

  When the touch area corresponds to 16 detection areas or more, the touch area determination unit 26 recognizes that an object touching the screen is in contact with a surface such as a cloth that performs a cleaning operation. When the touch area determination unit 26 recognizes that the object touched on the screen is a surface such as a cloth, the touch area determination unit 26 provides an instruction signal to the touch count counting unit 22 to prohibit the update of the number of touches. The touch count counting unit 22 performs a process of not updating the number of touches for the touched region based on an instruction signal that prohibits the update of the touch count. Alternatively, the number of touches may be updated to 0, assuming that the screen is no longer soiled by cleaning. The display device 10 may control the display unit 12 via the display instruction unit 28 and display information indicating that the touch is a cleaning operation on the screen.

  The number of detection areas corresponding to the touch area for recognizing a finger or a touch pen is not limited to the above example, and may be changed as appropriate according to user settings.

FIG. 10 is a diagram illustrating a state where a finger touching the screen is moving on the screen.
When the display device 10 determines that the finger touching the screen is moving on the screen, the touch input area 14a displayed on the screen is not detected as a valid input even if the finger touches it. It has a function to set. The object touching the screen may be not only a finger but also a cloth.

  Specifically, the display control unit 20 detects that the position information of the touched area sequentially changes to the position information of the area adjacent to the touched area. When the finger touching the screen is moved as it is on the screen, the position information of the detection area included in the touched area is sequentially changed to position information adjacent to the position information in accordance with the movement of the finger. The display control unit 20 determines that the screen is wiped when it is detected that the position information of the touched area is sequentially changed. When the touch input area 14a for input by touching is displayed on the screen, the display control unit 20 detects a finger touch in the touch input area 14a so that an input unintended by the user is not performed. Therefore, the touch input area 14a is set to the insensitive state.

  As a method of setting the insensitive state, there are a method of turning off the activation of the detection area of the touch panel 14 corresponding to the touch input area 14a, a method of processing the detection signal of the detection area of the touch input area 14a as invalid, and the like. .

  Note that the region set to the insensitive state is not limited to the touch input region 14a, and may be a partial region or the entire region of another screen.

FIG. 11 is a flowchart showing a procedure for setting a part of the screen to the insensitive state.
First, the presence or absence of a touch on the touch panel screen is detected (step S21). If there is an area touched on the screen, the presence / absence of sequential change of the position information is determined based on the position information of the touched area (step S22).

  When it is determined that the position information of the touched area is sequentially changed, it is determined that the screen is wiped, and the touch input area 14a (for example, the display button) displayed on the screen is set to the insensitive state. (Step S23).

  When it is determined that the position information of the touched area has not changed sequentially, the number of touches of the touched area is updated based on the position information of the touched area as usual.

  When the touch input area 14a is set to the insensitive state, whether the sequential change of the position information is not detected, or when the predetermined time elapses after setting the insensitive state, whether to cancel the setting of the insensitive state Determination is made (step S24). When the setting of the insensitive state is not cancelled, the setting of the touch input area 14a is continuously maintained in the insensitive state.

  When canceling the setting of the insensitive state, the touch input area 14a is set according to the detection signal of the detection area included in the touched area in the same manner as in the normal mode.

  After canceling the setting of the insensitive state, it is determined that the area where the position information has changed sequentially among the touched areas is cleaned, and the cleaning state information is based on the position information of the area where the position information has changed successively. The number of touches may be updated to 0 (step S25).

  Next, another modification of the display device will be described. The display device 10 can be executed in a power saving mode in which the power supply is turned off to prohibit operation of some functions and only some functions including detection of a screen touch are permitted. In this way, by setting the power saving mode when the display device 10 is not used, it is possible to suppress power consumption and detect only the touch of the screen.

FIG. 12 is a flowchart illustrating an example of an operation procedure in the power saving mode.
First, the power saving mode is set (step S31). The power saving mode is set by a user operation or display device control. When the power saving mode is set by the control of the display device, for example, the power saving mode is automatically set when no processing is performed for a predetermined time from the processing such as display on the screen.

  During the power saving mode, a touch on the screen is detected by the touch panel 14 (step S32).

  Based on the detection of the touch panel 14, the position information of the area touched by the display control unit 20 and the number of touches of the touched area based on the position information are updated and stored in the storage unit 16 (step S33). This touch detection operation is repeated every time a touch is detected.

  Next, it is determined whether or not the display device 10 is in a power-off state (step S34). When the power is OFF, the function of displaying on the screen is prohibited, and the process returns to step S32, and the state of detecting only the touch on the screen is maintained.

  When the power of the display device 10 is turned on, the process proceeds to step S35 to determine whether or not to execute the cleaning mode (step S35). If the touched area has reached the specified number or more while the power is OFF, the touched area is set as the cleaning target area, and the screen indicates that the cleaning target area exists. The If the cleaning mode is not executed, the process returns to step S32.

  When the cleaning mode is disclosed, the cleaning target area is displayed on the screen (step S36). The method of displaying the cleaning target area is the same as the example already described. When the area to be cleaned is cleaned, the number of touches on the cleaned area is updated (step S37).

In the description of the display device of the present invention, the following contents are disclosed.
(1) A display device having a screen for displaying,
A display unit provided with a touch panel capable of inputting by touching the screen;
A touch number counting unit that acquires position information indicating a touched area of the screen and updates the number of touches of the touched area based on the position information;
A cleaning state determination unit that sets only a region where the number of touches is equal to or greater than the specified value as a region to be cleaned;
A display instruction unit configured to switch the setting of the display unit to a cleaning mode in which the cleaning target area is displayed on the screen.

  According to the display device, when the user touches the screen with a finger or a touch pen, the position information and the number of touches of the touched area of the screen are detected, and the touch is frequently performed based on the touch count of the touched area. An area can be set as a cleaning target area, and the cleaning target area can be displayed on the screen. The user can determine which area on the screen is dirty by visually recognizing the area to be cleaned displayed on the screen. In addition, the user only needs to clean the area to be cleaned displayed on the screen, and does not need to clean the entire screen. For this reason, it is possible to focus on cleaning only areas that are easily contaminated on the screen, and it is not necessary to frequently clean areas that are difficult to get dirty, and the entire screen can be efficiently cleaned.

(2) The display device according to (1) above,
A display device comprising a storage unit in which cleaning state information in which the number of touches is associated is created for each touched region of the screen by the cleaning state determination unit, and the cleaning state information is stored.

  According to the above configuration, the touched area and the number of touches of the touched area can be identified by referring to the cleaning state information.

(3) The display device according to (1) or (2) above,
The display device in which the touch panel has a plurality of detection areas for dividing the screen, and the position information is set in each of the plurality of detection areas.

  According to the above configuration, by acquiring position information from the detection area included in the touched area, the position of the touched area can be accurately specified.

(4) The display device according to (3) above,
The touch frequency counting unit updates the touch frequency of the detection area based on the position information of the detection area included in the touched region,
The display device in which the cleaning state determination unit sets a detection area in which the number of touches is equal to or more than the specified value in the detection area as the cleaning target area.

  According to the said structure, the cleaning object area | region can be set correctly with the frequency | count of a touch of a detection area.

(5) The display device according to any one of (1) to (4) above,
A cleaning support display creation unit that calculates a single line that passes through all the cleaning target areas at least once when the cleaning target areas are separately displayed on the screen; A display device for displaying the line on the screen when the operation is performed.

  According to the above configuration, even if the touch panel is a detection method that cannot detect two points on the screen at the same time, the user can accurately detect the cleaned region by cleaning the screen along the line L. it can.

(6) The display device according to (5) above,
The display device in which the cleaning support display creation unit changes a display format of an overlapping portion between the cleaning target area and the single line according to the number of touches of the cleaning target area.

  According to the said structure, the user can grasp | ascertain not only the locus | trajectory for cleaning but the dirt condition of each cleaning object area | region D by visually recognizing the line L. FIG.

(7) The display device according to any one of (1) to (6) above,
The area of the touch on the screen is detected, and when the area is within a predetermined range, it is determined that the touch is performed by a finger, and updating of the number of touches of the touched area is permitted, and the area is predetermined. A display device comprising a touch area determination unit that determines that the touch is by a finger other than a finger and prohibits the update of the number of touches of the touched region when it is out of the range.

  According to the above configuration, it is possible to set the cleaning target region more accurately by determining whether the object that touches the screen is an input unit that is less affected by dirt on the screen other than the finger. .

(8) The display device according to any one of (1) to (7) above,
In a state where a touch input area for input by touch is displayed on the screen, the position information of the touched area sequentially changes to the position information of an area adjacent to the touched area. A display device that changes to an insensitive state that prohibits a process of detecting a touch in the touch input area as an input.

  According to the above configuration, when the user wipes the screen, it is possible to avoid executing an unintended input instruction by touching the touch input area.

(9) The display device according to any one of (1) to (8) above,
A display device configured to set to a power saving mode that allows only a part of functions including detection of touch on the screen, and to update the number of touches in the touched region during the power saving mode.

  According to the above configuration, when the display device 10 is not used, the power saving mode is set, thereby suppressing power consumption and detecting only a touch on the screen.

DESCRIPTION OF SYMBOLS 10 Display apparatus 12 Display part 14 Touch panel 16 Storage part 20 Display control part 22 Touch frequency count part 24 Cleaning state determination part 28 Display instruction | indication part

Claims (9)

A display device having a screen for displaying,
A display unit provided with a touch panel capable of inputting by touching the screen;
A touch number counting unit that acquires position information indicating a touched area of the screen and updates the number of touches of the touched area based on the position information;
A cleaning state determination unit that sets only a region where the number of touches is equal to or greater than the specified value as a region to be cleaned;
A display instruction unit configured to switch the setting of the display unit to a cleaning mode in which the cleaning target area is displayed on the screen. The display device according to claim 1,
A display device comprising a storage unit in which cleaning state information in which the number of touches is associated is created for each touched region of the screen by the cleaning state determination unit, and the cleaning state information is stored. The display device according to claim 1 or 2,
The display device in which the touch panel has a plurality of detection areas for dividing the screen, and the position information is set in each of the plurality of detection areas. The display device according to claim 3,
The touch frequency counting unit updates the touch frequency of the detection area based on the position information of the detection area included in the touched region,
The display device in which the cleaning state determination unit sets a detection area in which the number of touches is equal to or more than the specified value in the detection area as the cleaning target area. A display device according to any one of claims 1 to 4,
A cleaning support display creation unit that calculates a single line that passes through all the cleaning target areas at least once when the cleaning target areas are separately displayed on the screen; A display device for displaying the line on the screen when the operation is performed. The display device according to claim 5,
The display device in which the cleaning support display creation unit changes a display format of an overlapping portion between the cleaning target area and the single line according to the number of touches of the cleaning target area. The display device according to any one of claims 1 to 6,
The area of the touch on the screen is detected, and when the area is within a predetermined range, it is determined that the touch is performed by a finger, and updating of the number of touches of the touched area is permitted, and the area is predetermined. A display device comprising a touch area determination unit that determines that the touch is by a finger other than a finger and prohibits the update of the number of touches of the touched region when it is out of the range. A display device according to any one of claims 1 to 7,
In a state where a touch input area for input by touch is displayed on the screen, the position information of the touched area sequentially changes to the position information of an area adjacent to the touched area. A display device that changes to an insensitive state that prohibits a process of detecting a touch in the touch input area as an input. A display device according to any one of claims 1 to 8,
A display device configured to set to a power saving mode that allows only a part of functions including detection of touch on the screen, and to update the number of touches in the touched region during the power saving mode.

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