JP5975184B2 - Display device - Google Patents

Description

  The present invention relates to a display device that displays an image on a screen and detects an operation input by a user touching the screen.

  Conventionally, various display devices for displaying an image on a screen have been devised. For example, Patent Document 1 discloses a thin display device that includes a display unit that displays an image on a screen and a plurality of operation switches provided around the display unit.

  The thin display device displays a page on the screen of the display unit. The plurality of operation switches include a first switch that displays the next page of the currently displayed page, and a second switch that displays the previous page of the currently displayed page. By repeating the operation on the first switch, the user can switch the page displayed on the screen of the display unit to the next page.

JP 2002-373045 A

  However, for example, when the thin display device of Patent Document 1 displays the first page and then displays the second page different from the first page by the user repeating the operation on the first switch. The user may want to display the first page on the screen again.

  In this case, the user needs to repeat the operation to the second switch a plurality of times in order to return from the second page to the first page. Therefore, the thin display device of Patent Document 1 has a problem that the operation is troublesome as the number of operations to the second switch increases, and the user's usability is poor.

  SUMMARY An advantage of some aspects of the invention is that it provides a display device with improved user-friendliness.

  The display device of the present invention includes a display unit, a press sensor, and a page management unit. The display unit displays an image on the operation surface. The pressure sensor detects a pressure on the operation surface. When the display unit displays the first page on the operation surface and the pressure sensor detects a pressure on the operation surface, the page management unit displays page information indicating at least one of the content of the first page and the existing position. Remember. When the pressure sensor detects a pressing on the operation surface when the display unit displays a second page different from the first page on the operation surface, the page management unit detects the first page based on the page information. Is displayed on the display unit.

  When the user switches the page displayed on the operation surface to the next page and there is a page that he / she wants to see again later, he / she presses the operation surface with his / her finger when the page is displayed on the operation surface To do. When the press sensor detects a press on the operation surface, the page management unit treats the page as the first page and stores the page information of the first page. The page information is, for example, the HTML of the first page, the URL of the first page, or the page number of the first page.

  Thereafter, the user switches the page displayed on the operation surface to the next page. At this time, when the user wants to display the first page again on the operation surface, the user presses the operation surface with a finger or the like when the second page is displayed on the operation surface. The page management unit instructs the display unit to display the first page based on the page information when the pressing sensor detects pressing on the operation surface.

  Thereby, the first page is displayed again on the operation surface. Therefore, in this configuration, the user does not need to repeat the operation for returning from the second page to the first page a plurality of times.

  Therefore, according to this configuration, user convenience can be improved.

  In the display device of the present invention, it is preferable that the page management unit deletes the page information after the page information is stored, and when the press sensor detects a press on the operation surface for a certain time or more.

  In this configuration, when the user wants to reset the first page, the user presses the operation surface with a pressing force equal to or greater than a predetermined threshold for a certain period of time. Thereby, the page information of the first page is deleted, and the user can newly determine the first page.

  The display device of the present invention preferably has the following configuration. The display device of the present invention includes a touch sensor that detects an operation position on the operation surface. And a display part provides a some display area in an operation surface, and displays an image in each display area. In the page management unit, the operation position detected by the touch sensor when the display unit displays the first page in the first display region of the plurality of display regions is in the first display region, When the pressing sensor detects pressing on the operation surface, page information is stored.

  In this configuration, the user can switch the page displayed in each display area on the operation surface to the next page by repeating the operation on each display area on the operation surface. At this time, when there is a page to be viewed again later, the user presses the display area where the page is displayed with a finger or the like. The page management unit treats the page as the first page when the press sensor detects a press on the operation surface in the display area, and sets the display area displaying the first page as the first display area. Handle and store page information of the first page.

  Therefore, according to this configuration, even when a plurality of display areas are provided in the operation surface, the user can set the first page.

  In the display device according to the present invention, the page management unit is configured such that the operation position detected by the touch sensor when the display unit displays the second page in the first display region is within the first display region. In addition, when the pressing sensor detects pressing on the operation surface, it is preferable to instruct the display unit to display the first page in the first display area based on the page information.

  In this configuration, when the user wants to display the first page again on the operation surface, the user can display the first page in the first display area when the second page is displayed in the first display area. Press with your finger. A page management part will instruct | indicate a display part to display a 1st page in a 1st display area based on page information, if a press sensor detects the press to an operation surface within a 1st display area.

  Thereby, the first page is displayed again on the operation surface in the first display area. Therefore, in this configuration, the user does not need to repeat the operation for returning from the second page to the first page a plurality of times.

  Therefore, according to this configuration, even when a plurality of display areas are provided in the operation surface, user convenience can be improved.

  In the display device of the present invention, the page management unit stores the page information, and then the operation position detected by the touch sensor is in the second display area among the plurality of display areas, and the pressure sensor. It is preferable to delete the page information when detecting a pressing on the operation surface.

  In this configuration, when the user wants to reset the first page, the user presses the second display area with a finger or the like. The second display area is an area different from the first display area. Thereby, the page information of the first page is deleted, and the user can newly determine the first page.

  In the display device of the present invention, it is preferable that the pressure sensor has a piezoelectric film formed of a chiral polymer.

  In this configuration, the signal level of the pressure detection signal can be detected reliably and with high sensitivity.

  In the display device of the present invention, the chiral polymer is preferably polylactic acid.

  In this configuration, the signal level of the pressure detection signal can be detected reliably and with high sensitivity.

  In the display device of the present invention, the polylactic acid is preferably L-type polylactic acid.

  In this configuration, the signal level of the pressure detection signal can be detected reliably and with high sensitivity.

  According to the present invention, user convenience can be improved.

1 is an external perspective view of a display device 1 according to a first embodiment of the present invention. It is sectional drawing of the SS line | wire shown in FIG. It is a top view of touch sensor 11D shown in FIG. It is a top view of the press sensor 11P shown in FIG. It is a block diagram of the display apparatus 1 shown in FIG. It is a flowchart which shows the process which the control part 20 shown in FIG. 5 performs. FIG. 2 is a diagram illustrating an example of a first page displayed on an operation surface 101 illustrated in FIG. 1. FIG. 3 is a diagram illustrating an example of a second page displayed on the operation surface 101 illustrated in FIG. 1. It is a flowchart which shows the process which the control part 20 of the display apparatus 2 which concerns on the 2nd Embodiment of this invention performs. It is a figure which shows an example of the 1st page displayed on the operation surface 101 of the display apparatus 2 which concerns on the 2nd Embodiment of this invention. It is a figure which shows an example of the 2nd page displayed on the operation surface 101 of the display apparatus 2 which concerns on the 2nd Embodiment of this invention.

  A display device according to a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an external perspective view of a display device 1 according to the first embodiment of the present invention. 2 is a cross-sectional view taken along line S-S shown in FIG. FIG. 3 is a plan view of the touch sensor 11D shown in FIG. FIG. 4 is a plan view of the press sensor 11P shown in FIG. FIG. 5 is a block diagram of the display device 1 shown in FIG.

  As shown in FIG. 1, the display device 1 includes a housing 100 having a size that is portable. The display device 1 is, for example, a tablet or a smartphone.

  The casing 100 has a rectangular parallelepiped shape whose length and width are larger than the thickness, and has a shape in which the top surface is opened. As shown in FIGS. 1 and 2, the casing 100 is fitted with a flat operation input unit 10 so as to close the opening surface of the casing 100. One main surface of the operation input unit 10 is an operation surface 101. The operation input unit 10 is made of a translucent material.

  As shown in FIGS. 1 and 2, the touch sensor 11D, the press sensor 11P, the display unit 30, the control circuit module 52, and the battery 70 shown in FIG. Is arranged. The touch sensor 11D and the press sensor 11P are combined to form the operation input unit 10. The touch sensor 11 </ b> D, the pressure sensor 11 </ b> P, and the display unit 30 have a flat plate shape, and are arranged on the housing 100 such that the flat plate surfaces are parallel to the operation surface 101 of the housing 100.

  A circuit board (not shown) is disposed between the bottom surface of the housing 100 and the display unit 30, and the control circuit module 52 is mounted on the circuit board. The control circuit module 52 is a module that implements the control unit 20, the storage unit 21, the RAM 22, the wireless LAN communication unit 60, and the 3G communication unit 61 illustrated in FIG. The control circuit module 52 is connected to the touch sensor 11 </ b> D, the press sensor 11 </ b> P, the display unit 30, and the battery 70.

  As shown in FIGS. 2 and 3, the touch sensor 11D includes a flat insulating substrate 11D1, a plurality of capacitance detection electrodes 11D2, a plurality of capacitance detection electrodes 11D3, and a protective film 11D4. Have.

  A protective film 11D4 is provided on the surface of the touch sensor 11D opposite to the pressing sensor 11P. The protective film 11D4 is made of a flexible and insulating material. The protective film 11D4 is made of a translucent material. For example, PET or PP may be used for the protective film 11D4.

  The insulating substrate 11D1 is made of a light-transmitting material. As shown in FIGS. 2 and 3, a plurality of capacitance detection electrodes 11D2 are formed on one flat plate surface of the insulating substrate 11D1. The plurality of capacitance detection electrodes 11 </ b> D <b> 2 are long and have a shape in which the long direction is along the first direction. The plurality of capacitance detection electrodes 11D2 are arranged at intervals along a second direction orthogonal to the first direction.

  A plurality of capacitance detection electrodes 11D3 are formed on the other flat plate surface of the insulating substrate 11D1. The plurality of capacitance detection electrodes 11 </ b> D <b> 3 are long and have a shape in which the long direction follows the second direction. The plurality of capacitance detection electrodes 11D3 are arranged at intervals along the first direction. The plurality of capacitance detection electrodes 11D2 and 11D3 are made of a light-transmitting material.

  The touch sensor 11D detects a change in capacitance that occurs when a user's finger approaches or comes into contact with the capacitance detection electrodes 11D2 and 11D3, and uses a signal based on this detection as an operation detection signal as a control circuit module. To 52.

  As shown in FIGS. 2 and 4, the press sensor 11 </ b> P includes a flat film-like piezoelectric film 11 </ b> P <b> 1 and press detection electrodes 11 </ b> P <b> 2 and 11 </ b> P <b> 3. Press detection electrodes 11P2 and 11P3 are formed on the opposing flat film surfaces of the piezoelectric film 11P1. The press detection electrodes 11P2 and 11P3 are formed on substantially the entire flat film surface of the piezoelectric film 11P1.

  The pressure sensor 11P detects charges generated by bending of the piezoelectric film 11P1 when the user presses the flat film surface of the piezoelectric film 11P1, using the pressure detection electrodes 11P2 and 11P3, and a signal based on this detection is detected as a pressure detection signal. To the control circuit module 52.

  The piezoelectric film 11P1 may be a film having piezoelectricity, but is preferably formed of uniaxially stretched polylactic acid (PLA), more preferably L-type polylactic acid (PLLA).

  PLLA is a chiral polymer, and the main chain has a helical structure. PLLA is uniaxially stretched and has piezoelectricity when the molecules are oriented. The uniaxially stretched PLLA generates electric charges when the flat film surface of the piezoelectric film is pressed. At this time, the amount of charge generated is uniquely determined by the amount of displacement of the flat membrane surface in the direction orthogonal to the flat membrane surface by pressing. The piezoelectric constant of uniaxially stretched PLLA belongs to a very high class among polymers.

  Therefore, by using PLLA, displacement due to pressing can be detected reliably and with high sensitivity. That is, it is possible to reliably detect the pressure and detect the amount of pressure with high sensitivity.

  The draw ratio is preferably about 3 to 8 times. By performing a heat treatment after stretching, crystallization of the extended chain crystal of polylactic acid is promoted and the piezoelectric constant is improved. In addition, when biaxial stretching is performed, the same effect as uniaxial stretching can be obtained by varying the stretching ratio of each axis. For example, when a certain direction is the X axis, the X axis direction is 8 times, and the Y axis direction orthogonal to the X axis is doubled, and the piezoelectric constant is about 4 times uniaxially stretched in the X axis direction. Is almost the same effect. A film that is simply uniaxially stretched easily tears along the direction of the stretch axis, and thus the strength can be increased somewhat by performing biaxial stretching as described above.

  In addition, PLLA generates piezoelectricity by molecular orientation treatment such as stretching, and does not need to be polled like other polymers such as PVDF or piezoelectric ceramics. That is, the piezoelectricity of PLLA that does not belong to ferroelectrics is not expressed by the polarization of ions like ferroelectrics such as PVDF and PZT, but is derived from a helical structure that is a characteristic structure of molecules. is there.

  For this reason, the pyroelectricity generated in other ferroelectric piezoelectric materials does not occur in PLLA. Further, PVDF or the like shows a change in piezoelectric constant over time, and in some cases, the piezoelectric constant may be significantly reduced, but the piezoelectric constant of PLLA is extremely stable over time. Therefore, it is possible to detect displacement due to pressing with high sensitivity without being affected by the surrounding environment.

  In such a uniaxially stretched piezoelectric film 11P1, the uniaxially stretched direction 900 forms an angle of approximately 45 ° with respect to the two orthogonal directions along the side surface of the housing 100, as shown in FIGS. Thus, it is preferable to arrange in the housing 100. By performing such an arrangement, the displacement can be detected with higher sensitivity. Therefore, it is possible to detect the pressing and the pressing amount with higher sensitivity.

  As shown in FIGS. 2 and 4, the pressure detection electrodes 11P2 and 11P3 use any of organic electrodes mainly composed of polythiophene and polyaniline, and inorganic electrodes such as ITO, ZnO, silver nanowires, carbon nanotubes, and graphene. Is preferred. By using these materials, a highly translucent conductor pattern can be formed.

  As shown in FIGS. 1 and 2, a display unit 30 is disposed on the other main surface of the operation input unit 10 inside the housing 100. The display unit 30 includes a so-called flat display, and specifically includes a liquid crystal display element. The display unit 30 includes a liquid crystal panel 301, a front polarizing plate 302, a back polarizing plate 303, and a backlight 304. The front polarizing plate 302 and the back polarizing plate 303 are arranged so as to sandwich the liquid crystal panel 301 therebetween. The backlight 304 is disposed on the opposite side of the liquid crystal panel 301 with the back polarizing plate 303 interposed therebetween.

  Next, as illustrated in FIG. 5, the display device 1 includes an operation input unit 10, a control unit 20, a storage unit 21, a RAM 22, a display unit 30, a wireless LAN communication unit 60, a 3G communication unit 61, and a battery 70. .

  The control unit 20 and the RAM 22 constitute the “page management unit” of the present invention.

  The storage unit 21 is configured by a flash memory, for example. The storage unit 21 stores a control program in which a control method for each unit of the display device 1 is described. A plurality of application software including browser software to be described later is installed in this control program.

  The control unit 20 is constituted by a CPU, for example. The control unit 20 also has a timer circuit that measures the current time and the current date. The control unit 20 controls the operation of each unit of the display device 1 according to a control program stored in the storage unit 21. The control unit 20 expands data processed by the control program in the RAM 22.

  The operation input unit 10 is configured with a touch panel, for example. The operation input unit 10 includes a press sensor 11P and a touch sensor 11D. Further, the display device 1 includes a physical end key (not shown) that ends the activated application software.

When the operation surface 101 of the operation input unit 10 is pressed, the pressing sensor 11P generates a pressing detection signal having a signal level D _Sp corresponding to the pressing amount (pressing force). The press sensor 11P outputs a press detection signal to the control unit 20.

The touch sensor 11 </ b> D is a capacitance sensor, and generates an operation detection signal indicating the value of the detection capacitance of each electrode of the operation input unit 10. The signal level _DSd of the operation detection signal depends on the amount of change in capacitance that occurs when the user's finger approaches or touches the touch sensor 11D. The touch sensor 11D outputs the generated operation detection signal to the control unit 20.

When the control unit 20 detects that the signal level _DSd of the operation detection signal output from the touch sensor 11D is larger than a predetermined threshold, the control unit 20 acquires the operation position from the operation detection signal.

  The control unit 20 determines the operation input content based on the press detection signal and the operation detection signal. At this time, the control unit 20 uses the storage unit 21 as a storage area for operation input content determination processing. The control unit 20 generates image data based on the determined operation input content and outputs it to the display unit 30.

  The display unit 30 displays an image on the operation surface 101 based on the image data.

  The wireless LAN communication unit 60 and the 3G communication unit 61 have an antenna (not shown). The wireless LAN communication unit 60 communicates with a server device (not shown) via a wireless LAN router connected to the Internet. The 3G communication unit 61 communicates with a server device (not shown) via a base station connected to the mobile phone network.

  The battery 70 supplies DC operating power to each unit of the display device 1.

  Next, the operation of the control unit 20 when the browser software is activated will be described with reference to FIGS. 6, 7, and 8. FIG. FIG. 6 is a flowchart showing processing executed by the control unit 20 shown in FIG. FIG. 7 is a diagram illustrating an example of the first page displayed on the operation surface 101 illustrated in FIG. 1. FIG. 8 is a diagram illustrating an example of the second page displayed on the operation surface 101 illustrated in FIG. 1.

  When the user touches the browser software icon among the plurality of application software icons displayed on the operation surface 101, the control unit 20 activates the browser software (S1).

  When the browser software is activated, the control unit 20 designates the URL of the home page preset in the browser software in the URL input field of the browser software (S2). Thereby, the control unit 20 accesses the designated URL by the wireless LAN communication unit 60 or the 3G communication unit 61, and downloads data of the URL from a server device (not shown). The data includes HTML (HyperText Markup Language), image data, and CSS (Cascading Style Sheets).

  Next, the control unit 20 instructs the display unit 30 to display the homepage according to the description of the downloaded HTML (S3).

Then, the control unit 20 determines whether or not the operation surface 101 has been pressed (S4), whether or not the above-described end key has been operated (S5), and whether or not a link displayed on the operation surface 101 has been operated (S6). , Is determined. In S4, the control unit 20 determines whether or not the signal level D _Sp of the pressure detection signal output from the pressure sensor 11P is equal to or greater than a predetermined threshold value. This signal level D _Sp indicates a value corresponding to the pressing force.

  In S6, when the user touches a link or bookmark displayed on the operation surface 101, or when the user directly inputs a predetermined URL into the URL input field of the browser software, the control unit 20 displays the URL of the link, the bookmark. Or a directly input URL is designated in the URL input field (S7).

  Thereby, the control unit 20 accesses the designated URL by the wireless LAN communication unit 60 or the 3G communication unit 61, and downloads data of the URL from a server device (not shown). Then, the control unit 20 instructs the display unit 30 to display the page in accordance with the downloaded HTML description (S3), and continues the processing.

  On the other hand, in S5, when the user operates the end key immediately after starting the browser software, or when the user operates the end key without pressing the operation surface 101, the control unit 20 ends the browser software ( S19).

  Here, in S <b> 3 to S <b> 7, it is assumed that the user touches the operation surface 101 to search a website on the Internet, follow a link, and browse and visit one after another. In this scene, when there is a page to be viewed again later, the user presses the operation surface 101 with a finger or the like when the page is displayed on the operation surface 101.

When it is determined that the signal level D _Sp of the pressure detection signal output from the pressure sensor 11P is equal to or higher than the predetermined threshold (Y in S4), the control unit 20 treats the current page as the first page (for example, FIG. 7). The page information indicating the contents of the first page is stored in the RAM 22 (S8). The page information includes HTML, image data, CSS, and the like.

  In this embodiment, the page information uses HTML, image data, CSS, or the like, but is not limited thereto. For example, only the HTML of the first page indicating the contents of the first page or only the URL of the first page indicating the location of the first page may be used.

Then, the control unit 20 determines whether the above-described end key is operated (S9), whether a link displayed on the operation surface 101 is operated (S10), and whether the operation surface 101 is pressed again (S11). ), Whether or not the operation surface 101 is long pressed (S12). In S11, similarly to S4, the control unit 20 determines whether or not the signal level D _Sp of the pressure detection signal output from the pressure sensor 11P is equal to or greater than a predetermined threshold value. In S12, the control unit 20 determines whether or not the signal level D _{Sp equal to} or greater than a predetermined threshold has continued for a certain period of time.

  When the user touches a link or bookmark displayed on the operation surface 101, or when the user directly inputs a predetermined URL into the URL input field of the browser software, the control unit 20 displays the URL of the link, the bookmark URL, The directly input URL is designated in the URL input field (S13).

  As a result, the control unit 20 accesses the designated URL by the wireless LAN communication unit 60 or the 3G communication unit 61, and the data of the URL (specifically, HTML, image data, and CSS) is transmitted to the server device (not specified). Download from (shown).

  Next, the control unit 20 instructs the display unit 30 to display the page according to the description of the downloaded HTML (S14). Then, the control unit 20 returns to S9 and continues the process.

  Here, in S9 to S14, it is assumed that the user touches the operation surface 101 to search a website on the Internet, follow a link, and browse and visit one after another. In this scene, as the user browses and turns around one after another, a second page different from the first page is displayed on the operation surface 101 (see, for example, FIG. 8).

  In this scene, when the user wants to display the first page on the operation surface 101 again, the user can touch the operation surface 101 with a finger or the like when the second page is displayed on the operation surface 101. Press.

When it is determined that the signal level D _Sp of the pressure detection signal output from the pressure sensor 11P is greater than or _equal to a predetermined threshold (Y in S11), the control unit 20 displays page information of the first page (in this embodiment, HTML, Image data and CSS) are read from the RAM 22 (S15).

  In S15, when the URL of the first page is read from the RAM 22 as the page information of the first page, the control unit 20 further accesses the read URL by the wireless LAN communication unit 60 or the 3G communication unit 61. The URL data is downloaded from a server device (not shown).

  Next, the control unit 20 instructs the display unit 30 to display the first page according to the page information read from the RAM 22 (S16). Then, the control unit 20 returns to S9 and continues the process.

  Thereby, the first page is displayed again on the operation surface 101 (see, for example, FIG. 7). Therefore, in this configuration, the user does not need to repeat the operation for returning from the second page to the first page a plurality of times.

  Therefore, according to this configuration, user convenience can be improved.

  Next, when it is desired to reset the first page, the user presses the operation surface 101 with a finger or the like for a predetermined time or more.

When it is determined that the signal level D _{Sp equal to} or greater than the predetermined threshold has continued for a certain time (Y in S12), the control unit 20 erases the page information of the first page stored in the RAM 22 (S17). Then, the control unit 20 returns to S4 and continues the process.

  As a result, the page information of the first page is erased from the RAM 22, and the user can newly determine the first page.

  Finally, when the user operates the end key (Y in S9), the control unit 20 deletes the page information of the first page stored in the RAM 22 (S18). Then, the control unit 20 ends the browser software (S19).

  Next, a display device according to a second embodiment of the present invention will be described with reference to the drawings.

  FIG. 9 is a flowchart showing processing executed by the control unit 20 of the display device 2 according to the second embodiment of the present invention. FIG. 10 is a diagram illustrating an example of a first page displayed on the operation surface 101 of the display device 2 according to the second embodiment of the present invention. FIG. 11 is a diagram showing an example of a second page displayed on the operation surface 101 of the display device 2 according to the second embodiment of the present invention.

  The configuration of the display device 2 of the second embodiment is the same as the configuration of the display device 1 of the first embodiment. The difference between the display device 2 of the second embodiment and the display device 1 of the first embodiment is the display method of the display unit 30 and the processing executed by the control unit 20.

  More specifically, as shown in FIG. 10, the display unit 30 includes a plurality of windows 111 and 112 in the operation surface 101 and displays an image in each of the windows 111 and 112. And as shown in FIG. 9, the process which the control part 20 of the display apparatus 2 which concerns on 2nd Embodiment performs S3, S7, S8, S11, S15, and S16 in FIG. It is replaced with S27 and S25 and S28 are added. The other processes (S1, S2, S4 to S6, S9, S10, S12 to S14, and S17 to S19) are the same as the processes shown in FIG.

  First, the control unit 20 instructs the display unit 30 to display a home page in each display area in accordance with the description of HTML downloaded from a server device (not shown) (S21).

  Then, the control unit 20 determines whether or not the operation surface 101 has been pressed (S4), whether or not the above-described end key has been operated (S5), and whether or not a link displayed on the operation surface 101 has been operated (S6). , Is determined.

  When the user touches a link or bookmark displayed on the operation surface 101, or when the user directly inputs a predetermined URL into the URL input field of the browser software, the control unit 20 displays the URL of the link, the bookmark URL, The directly input URL is designated in the URL input field of the operated display area (S22).

  Thereby, the control unit 20 accesses the designated URL by the wireless LAN communication unit 60 or the 3G communication unit 61, and downloads data of the URL from a server device (not shown). Then, the control unit 20 instructs the display unit 30 to display the page in accordance with the downloaded HTML description (S3), and continues the processing.

  In the display device 2, in S <b> 4 to S <b> 6, S <b> 21, and S <b> 22, the user searches the website on the Internet or follows the link by touching each of the windows 111 and 112 of the operation surface 101. Suppose you are browsing around one after another.

  In this scene, when there is a page to be viewed again later, the user presses the inside of the window displaying the page with a finger or the like when the page is displayed on the operation surface 101.

When it is determined that the signal level D _Sp of the pressure detection signal output from the pressure sensor 11P is equal to or greater than the predetermined threshold (Y in S4), the control unit 20 treats the current page as the first page and also performs the first The current window displaying this page is handled as the first display area, and the page information of the first page and the identification information for identifying the first display area are stored in the RAM 22 (S23).

  For example, in FIG. 10, the control unit 20 treats the window 111 as the first display area, page information of the first page displayed in the window 111, and identification information that identifies the window 111 as the first display area Is stored in the RAM 22.

  Then, the control unit 20 determines whether or not the above-described end key has been operated (S9), whether or not a link displayed on the operation surface 101 has been operated (S10), whether the operation surface 101 is within the first display area. It is determined whether or not the operation surface 101 is pressed again (S24), whether or not the operation surface 101 is pressed for a long time (S12), and whether or not the operation surface 101 is pressed within the second display area (S25).

In S24, the control unit 20 determines whether or not the signal level D _Sp of the pressure detection signal that is pressed in the first display area and output from the pressure sensor 11P is equal to or greater than a predetermined threshold value. In S25, the control unit 20 determines whether or not the signal level D _Sp of the pressure detection signal that is pressed in the second display area and output from the pressure sensor 11P is equal to or greater than a predetermined threshold value.

  Here, in S9, S10, S24, S12, and S25, the user searches for a website on the Internet or follows a link by touching each of the windows 111 and 112 of the operation surface 101. It is assumed that the user browses around one after another. In this scene, when the user browses and turns around, a second page different from the first page is displayed in the first display area.

  In this scene, if the user wants to display the first page again in the first display area of the operation surface 101, the user is in the first display area where the second page is displayed. Press with your finger. For example, in FIG. 11, the user presses the inside of the window 111 in which the second page is displayed with a finger or the like.

When it is determined that the signal level D _Sp of the pressure detection signal that is pressed in the first display area and output from the pressure sensor 11P is equal to or greater than a predetermined threshold (Y in S24), the control unit 20 is stored in the RAM 22. The page information of the first page (in this embodiment, HTML, image data, and CSS) is read from the RAM 22 (S26).

  Next, the control unit 20 instructs the display unit 30 to display the first page in the first display area in accordance with the HTML description read from the RAM 22 (S27). Then, the control unit 20 returns to S9 and continues the process.

  As a result, the first page is displayed again in the first display area. For example, as shown in FIG. 10, the first page is displayed in the window 111. Therefore, in this configuration, the user does not need to repeat the operation for returning from the second page to the first page a plurality of times.

  Therefore, according to the display device 2 of the second embodiment, the user-friendliness can be improved similarly to the display device 1 of the first embodiment.

  Next, when the user wants to reset the first page, the user presses the second display area with a finger or the like. For example, in FIG. 11, the user presses the inside of the window 112 with a finger or the like.

If it is determined that the signal level D _Sp of the pressure detection signal that is pressed in the second display area and output from the pressure sensor 11P is equal to or greater than a predetermined threshold (Y in S25), the control unit 20 is stored in the RAM 22. The page information of the first page is erased (S28). Then, the control unit 20 returns to S4 and continues the process.

  As a result, the page information of the first page is erased from the RAM 22, and the user can newly determine the first page.

  In each of the above embodiments, the display unit 30 displays the page received by the communication unit on the operation surface 111, but the present invention is not limited to this. For example, the display device may include a memory card slot, and a page read from a memory card inserted into the memory card slot may be displayed on the operation surface.

  In each of the above embodiments, the browser software is activated, but the present invention is not limited to this. The present invention is, for example, a type of application software that switches a page displayed on the operation surface by repeatedly operating the operation surface (for example, application software that displays a plurality of photographs taken by the user on the operation surface). ). In this case, the storage management unit may store the page number as page information indicating the location of the first page.

  Finally, the description of each of the embodiments should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above embodiments but by the claims. Furthermore, the scope of the present invention is intended to include all modifications within the meaning and scope equivalent to the scope of the claims.

DESCRIPTION OF SYMBOLS 1 ... Display apparatus 2 ... Display apparatus 10 ... Operation input part 11D ... Touch sensor 11D1 ... Insulating board | substrate 11D2, 11D3 ... Electrode 11D4 for electrostatic capacitance detection ... Protective film 11P ... Press sensor 11P1 ... Piezoelectric film 11P2, 11P3 ... Press detection Electrode 20 ... Control unit 21 ... Storage unit 22 ... RAM
DESCRIPTION OF SYMBOLS 30 ... Display part 52 ... Control circuit module 60 ... Wireless LAN communication part 61 ... 3G communication part 70 ... Battery 100 ... Case 101 ... Operation surface 111,112 ... Window 301 ... Liquid crystal panel 302 ... Front surface polarizing plate 303 ... Back surface polarizing plate 304 ... Backlight 900 ... Uniaxial stretching direction

Claims (8)

A display unit for displaying an image on the operation surface;
A pressure sensor for detecting pressure on the operation surface;
When the display unit displays the first page on the operation surface and the pressure sensor detects a pressure on the operation surface, page information indicating at least one of the content and the location of the first page A page management unit for storing
When the pressure sensor detects a pressure on the operation surface when the display unit displays a second page different from the first page on the operation surface, the page management unit includes the page information. And instructing the display unit to display the first page ,
The said page management part is a display apparatus which erase | eliminates the said page information, if the said press sensor detects the press to the said operation surface more than fixed time after memorize | stored the said page information .   A display unit for displaying an image on the operation surface;
  A pressure sensor for detecting pressure on the operation surface;
  A touch sensor for detecting an operation position on the operation surface;
  When the display unit displays the first page on the operation surface and the pressure sensor detects a pressure on the operation surface, page information indicating at least one of the content and the location of the first page A page management unit for storing
  When the pressure sensor detects a pressure on the operation surface when the display unit displays a second page different from the first page on the operation surface, the page management unit includes the page information. And instructing the display unit to display the first page,
  The display unit includes a plurality of display areas in the operation surface, and displays an image in each display area.
  The page management unit is configured such that an operation position detected by the touch sensor when the display unit displays the first page in a first display area of the plurality of display areas is the first position. When it is within the display area and the pressure sensor detects a pressure on the operation surface, the page information is stored,
  The page management unit stores the page information, and then the operation position detected by the touch sensor is in a second display area of the plurality of display areas, and the pressure sensor is in the operation surface. A display device that erases the page information upon detecting a press on the screen. A touch sensor for detecting an operation position on the operation surface;
The display unit includes a plurality of display areas in the operation surface, and displays an image in each display area.
The page management unit is configured such that an operation position detected by the touch sensor when the display unit displays the first page in a first display area of the plurality of display areas is the first position. The display device according to claim 1, wherein the page information is stored in a display area when the pressing sensor detects pressing on the operation surface.   The page management unit is configured such that an operation position detected by the touch sensor when the display unit displays the second page in the first display region is within the first display region, and When the press sensor detects a press on the operation surface, the display unit is instructed to display the first page in the first display area based on the page information. Display device.   The page management unit stores the page information, and then the operation position detected by the touch sensor is in a second display area of the plurality of display areas, and the pressure sensor is in the operation surface. The display device according to claim 3 or 4, wherein the page information is erased when a pressure on the screen is detected.   The display device according to claim 1, wherein the pressure sensor includes a piezoelectric film formed of a chiral polymer.   The display device according to claim 6, wherein the chiral polymer is polylactic acid.   The display device according to claim 7, wherein the polylactic acid is L-type polylactic acid.

Images