JP2009176245A - Display input device and electronic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To hold the strength of a casing applying a display part and the stability of its input detecting accuracy in the display part structured to integrate a planar display element with a surface protective panel. <P>SOLUTION: The display input device 100 comprises: the display part 29 having an operating surface and predetermined thickness and displaying an input operation image; and a planar input detecting part 45 continuously provided on the opposite side surface to the operating surface of the display part 29. The input detecting part 45 detects pressing force applied through the display part 29. When information is input by sliding and/or pressing operation on a display screen by an operator's finger or the like, the sliding position of an operating element and the amount of pressing force can be detected on the backside of the display part 29 in a tendency toward the rigidity fall and thinning of the display part 29. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a digital camera, a video camera, a mobile phone, a portable terminal device, a desktop personal computer (hereinafter referred to as a personal computer), a notebook personal computer, a braille, and a digital camera having a tactile input function that presents a tactile sensation when touching an icon screen. The present invention relates to a display input device and an electronic device applicable to an electronic device such as a block device.

  Specifically, when inputting information by sliding or pressing on the display screen with an operator's finger or the like, a flat input detection unit provided on the surface opposite to the operation surface of the display unit is provided. In addition to detecting the pressing force applied through the display unit, the sliding position of the operating body and the amount of the pressing force can be detected on the back side of the display unit, and the good optical characteristics of the display unit In addition, the strength of the casing to which the display unit is applied and the stability of the input detection accuracy can be maintained.

  In recent years, a user (operator) has photographed a subject using a digital camera equipped with various types of operation modes, or has taken various contents into a mobile terminal device such as a mobile phone or a PDA (Personal Digital Assistants) It has come to use it. These digital cameras, portable terminal devices, and the like are provided with a display input device. As the display input device, a keyboard, a touch panel type liquid crystal display in which an input means such as a JOG dial and a display unit are combined are often used. Furthermore, display input devices that change display contents when a user slides on the display screen with a finger have begun to be commercialized.

  In relation to the display input device described above, Patent Literature 1 discloses a display device with a coordinate input function. According to this display device, a pixel electrode is provided on a substrate, and a polymer-dispersed liquid crystal layer constituting a display unit is provided on the substrate. One main surface of the liquid crystal layer is provided by laminating a first transparent resistance film, a spacer, a second transparent resistance film, and a flexible transparent film constituting the coordinate input unit. The second transparent resistance film is disposed so as to face the first transparent resistance film via a spacer. The spacer is provided between the first transparent resistance film and the second transparent resistance film, and maintains a certain gap. The flexible transparent film is provided so as to overlap the second transparent resistance film.

  In such a structure, the current is supplied to the end of the first transparent resistance film, and the current is detected from the end different from the current supply end of the transparent resistance film and the end of the second transparent resistance film. To do. The coordinate of the electrical contact point is detected based on the detection output when the flexible transparent film is deformed by an external force and the second transparent resistive film is in electrical contact with the first transparent resistive film. It is. When the apparatus is configured in this manner, it is possible to eliminate a bonding shift between the coordinate input unit and the display unit and to reduce a shift between the display position and the coordinate input position in the line-of-sight direction.

  Patent Document 2 discloses an input device, an information processing device, a remote control device, and an input device control method. According to this input device, the sensor unit includes a sensor unit, a position determination processing unit, a control unit, and a drive unit, and when performing input by pressing operation or contact operation on the surface of the panel, the sensor unit is operated by pressing or contact with the panel surface. The presence or absence of pressing or the like is detected based on the detection data value that changes. The position determination processing unit measures the time from the start of operation such as pressing to the confirmation based on the detected data value, and generates a control signal corresponding to the length. A control part produces | generates the signal waveform of the drive voltage for displacing a panel using the control signal. The signal waveform of the drive voltage is output from the control unit to the drive unit. When the time until the input operation is confirmed is long, the control unit determines that the operation is weak with respect to the panel and vibrates the panel to a small extent. A signal waveform that vibrates the panel greatly is generated by judging that it is strongly applied. By configuring the apparatus in this way, it is possible to return a sense of force corresponding to how the operator operates the touch panel.

  Furthermore, in connection with the integration of the display unit and the touch panel, Patent Document 3 discloses a display device. According to this display device, a liquid crystal display panel for displaying an image and a touch panel for a user to touch and input a command are provided, and the touch panel is disposed at a distance from the liquid crystal display panel. A transparent resin filler was provided between the liquid crystal display panel and the touch panel to buffer the force applied through the touch panel. When the display device is configured in this way, the touch panel protects the liquid crystal display panel, and the liquid crystal display panel and the touch panel can be integrated, so that the strength of the touch panel can be improved and the display device can be made thinner. It can be planned.

Japanese Patent No. 3373791 (Page 3 Fig. 1) Japanese Patent No. 3941773 (Page 9, Fig. 3) Japanese Patent Laying-Open No. 2004-77887 (FIG. 3 on page 6)

By the way, according to a mobile phone, a video camera, a digital camera or the like mounted with a display device according to a conventional example, there are the following problems.
i. According to the display device as found in Patent Document 1, a resistive film system including first and second transparent resistive films, spacers, and a flexible transparent film above a polymer-dispersed liquid crystal layer forming a display unit. The coordinate input sections are stacked. Accordingly, the light that is transmitted through the display unit to the coordinate input unit and visually recognized is reduced as compared with the case where the coordinate input unit is not disposed, and there is a concern that the optical properties of the polymer-dispersed liquid crystal layer may be deteriorated.

  ii. According to the input device having a tactile sense presentation function as found in Patent Document 2, a resistive film type or electrostatic type touch panel is provided above the liquid crystal display unit. According to these types of touch panels, the first and second transparent resistance films, the spacers, the flexible transparent films, and the capacitive electrodes that constitute the potential circuit for pixel reading as disclosed in Patent Document 1 are reached. In many cases, a multilayer wiring structure is adopted as a wiring pattern such as an ITO film. Therefore, in a display input device having a touch panel input function, the light that is transmitted from the liquid crystal display unit to the touch panel of these methods and viewed is lower than that in the case where the touch panel is not disposed. Factors that degrade the optical characteristics of the display unit include a decrease in the aperture ratio of the display unit, and a decrease in transmittance associated therewith. As a result, there is a problem that the optical characteristics that should originally be obtained in the liquid crystal display unit are impaired.

  iii. In a display device in which a display unit and a touch panel as shown in Patent Document 3 are integrated, an attempt is made to add not only a sliding position of an operator's finger etc. but also a mechanism for detecting a pressing force at the sliding position. In this case, a method of detecting a pushing force in the pressing direction (Z direction) by providing a frame-like frame around the touch panel and mounting an input detection unit on the frame is conceivable. In order to perform stable input detection in the detection unit, it is necessary to adopt a structure that supports not only the touch panel but also the display unit. However, if the pressing force (load) during the pressing operation is excessively applied to the input detection unit, it will adversely affect the stability of the input detection accuracy or the display unit will be supported only by the frame. There is a problem that the strength of the portion is lowered.

  Incidentally, it is conceivable to adopt a structure in which not only the input detection unit but also other casing members support a touch panel, a liquid crystal display panel, and a flat display element such as an organic EL display element. With this structure, the housing member and the like support the touch panel and the display unit. Therefore, depending on the support method, an input operation performed via the touch panel on the display unit may be within the same plane of the panel. It is feared that a uniform input method cannot be used in this case, and the stability of input detection accuracy is adversely affected.

  Therefore, the present invention solves such a conventional problem, and even in a display unit having a structure in which a surface protection panel and a flat display element are integrated, the strength and input of a casing to which the display unit is applied. An object of the present invention is to provide a display input device and an electronic apparatus that can maintain the stability of detection accuracy.

  The above-described problem is a display input device that inputs information by sliding or pressing on a display screen with an operating body, and includes a display unit that has an operation surface and displays an input operation image, A display input device comprising: a planar input detection unit continuously provided on a surface opposite to the operation surface; and the input detection unit detects a pressing force applied through the display unit. Solved by.

  According to the display input device according to the present invention, when information is input by sliding or pressing on the display screen by the operating body, the display unit is in a trend of decreasing rigidity and thinning of the display unit. Becomes a load transmitting member, and the sliding position of the operating body and the amount of pressing force can be detected on the back side of the display unit.

  An electronic apparatus according to the present invention is an electronic apparatus provided with a display input means for inputting information by sliding or pressing on a display screen by an operating body, and the display input means has an operation surface for input. A display unit that displays an operation image; and a planar input detection unit that is connected to a surface opposite to the operation surface of the display unit. The input detection unit is pressurized through the display unit. It is characterized by detecting the pressing force.

  According to the electronic apparatus according to the present invention, since the display input device according to the present invention is provided, the display unit becomes a load transmitting member while the rigidity of the display unit is decreasing and the trend of thinning is followed. The sliding position and the amount of pressing force can be detected on the back side of the display unit.

  According to the display input device of the present invention, when information is input by sliding or pressing on the display screen by the operating body, the planar input connected to the surface opposite to the operation surface of the display unit is provided. An input detection unit is provided, and the input detection unit detects a pressing force applied through a display unit.

  With this configuration, the display unit becomes a load transmission member and the sliding position of the operating body and the amount of pressing force can be detected on the back side of the display unit while following the tendency of the display unit to decrease in rigidity and thickness. Become. Therefore, compared with a display input method in which a touch panel is provided on the display unit, it is possible to accurately detect the good optical characteristics of the display unit and the position information of the operation body for selecting the input operation image below the display surface. Become.

  According to the electronic apparatus according to the present invention, since the display input device according to the present invention is provided, the display unit becomes a load transmitting member while the rigidity of the display unit is decreasing and the trend of thinning is followed. The sliding position and the amount of pressing force can be detected on the back side of the display unit. Accordingly, it is possible to maintain the strength of the electronic apparatus to which the display unit having the structure in which the surface protection panel and the display element are integrated and the stability of the input detection accuracy thereof can be maintained. Moreover, since the display input device can be reduced in size and operability, the malfunction of the electronic device can be reduced, the cost can be reduced, and the manufacturing process can be simplified.

  Subsequently, embodiments of a display input device and an electronic apparatus according to the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing a configuration example of a display input device 100 as a first embodiment. In this embodiment, paying attention to the reduction in rigidity and thickness of the flat display element, the input detection unit 45 is arranged on the back surface of the display unit 29 when viewed from the input operation direction of the operator (user), and the user input Provided is a display input device 100 that can detect an operation through a physical pressing force of a display unit 29.

  A display input device 100 shown in FIG. 1 is for inputting information by an operation tool, for example, sliding on a display screen with an operator's finger or a pressing operation. The display input device 100 includes a planar input detection unit 45 and a display unit 29, and the display unit 29 is stacked on the input detection unit 45. The display input device 100 is thin, realizes an input detection function in a simple information processing system, and realizes a flat display element having excellent optical characteristics.

  The display unit 29 has an operation surface and displays an input operation image such as an icon operation image. The size of the display unit 29 is W × L = 40 to 60 mm × 60 to 120 mm, and the thickness t1 is 0.5 mm to 2 when the width is W, the length is L, and the thickness is t1. About 0.0 mm. For the display unit 29, for example, an organic EL display element is used. In addition to the organic EL display element, an electronic paper in which a plurality of transparent films and sealed liquid crystal layers are superimposed on the light absorption layer may be used for the display unit 29. Of course, a liquid crystal display element with a backlight may be used.

  The input detection unit 45 has a planar shape and a predetermined thickness t2, and is continuously provided on the surface of the display unit 29 opposite to the operation surface. The input detection unit 45 also has a width W, a length L, and a thickness t2. W × L of the input detection unit 45 is substantially the same as that of the display unit 29, and the thickness t2 is about 0.1 mm to 1.0 mm. The input detection unit 45 detects not only the operation position information by the user but also the pushing force (pressing force F). For example, the input detection unit 45 operates to detect a pressing force F applied through the display unit 29 when the user physically moves a finger or the like on the surface of the display unit 29. Thereby, an input operation can be executed by the display input device 100.

  FIG. 2 is a cross-sectional view illustrating a configuration example (front) of the display input device 100. The display input device 100 shown in FIG. 2 is configured by surface-joining a display unit 29 on an input detection unit 45. The input detection unit 45 has a planar pressure-sensitive sensor module structure. According to the pressure sensor module structure, the base sheet 50 is provided with the space member 53, the upper wiring pattern 571, the lower wiring pattern 572, and the plurality of pressure sensors 101.

  The base sheet 50 is substantially the same as the width × length = W × L of the display unit 29. The base sheet 50 is made of polyethylene terephthalate (PET), polyethylene naphthalate (PEN) or the like having a thickness of about 0.05 mm to 0.2 mm, and a plurality of lower wiring patterns 572 are formed on the base sheet 50. Is arranged.

  An insulating space member 53 is disposed on the base sheet 50. An opening 53a having a predetermined size is provided in the space member 53 in a honeycomb shape for each pressure-sensitive sensor 101 having a module structure. The opening 53a has a cylindrical shape with a diameter d, and sets a space opening area of the pressure-sensitive sensor 101. The space opening area is a parameter that greatly affects the pressure-sensitive characteristics of the pressure-sensitive sensor 101. The diameter d is, for example, about 2 mm to 5 mm when configuring an input device of a mobile phone. The thickness of the space member 53 is t2 '. The thickness t2 is about 0.1 mm to 0.2 mm, and is a parameter that greatly affects the pressure-sensitive characteristics of the pressure-sensitive sensor 101.

  On the space member 53, an insulating sheet 51a is provided. A plurality of upper wiring patterns 571 are arranged on the back side of the insulating sheet 51a. The display unit 29 described above is surface bonded to the surface of the insulating sheet 51a. This surface bonding is because the pressing force F is applied to the insulating sheet 51 a and the like via the display unit 29 so as to propagate the pressing force F to the pressure-sensitive electrode 110 of the pressure-sensitive sensor 101.

  In this example, the pressure sensor 101 is provided between the wiring patterns 571 and 572 and in each opening of the space member 53. In one pressure-sensitive sensor 101, an upper pressure-sensitive electrode 110 and a lower pressure-sensitive electrode 210 form a contact structure. The pressure-sensitive electrodes 110 and 210 have a coating film structure, and are configured, for example, by covering a silver electrode material with a pressure-sensitive member such as pressure-sensitive ink. The contact part of the pressure-sensitive sensor 101 has the same structure as a normal membrane switch. A major difference between the pressure-sensitive sensor 101 and a general membrane switch is that pressure-sensitive electrodes 110 and 210 are provided on both upper and lower contact electrodes. Of course, the pressure sensitive electrode 110 or 210 may be provided on one of the upper and lower contact electrodes.

  In this example, the pressure-sensitive sensor 101 has a contact structure in which the resistance value R continuously changes according to the pressing force F applied to the upper surface of the contact. That is, the pressure-sensitive sensor 101 constitutes a variable resistance type unit switch element in which the contact (contact) resistance gradually changes (decreases) after the pressure-sensitive electrodes 110 and 210 come into contact with each other. The contact resistance value is continuously reduced in accordance with the pressing force F pushed in. The resistance range is, for example, 50Ω to 500kΩ.

  A space is formed between the pressure-sensitive electrode 110 and the pressure-sensitive electrode 210 by the space member 53 in order to ensure the stroke of the unit switch element. By disposing the pressure-sensitive electrodes 110 and 210 of these contact structures in the respective openings of the space member 53 sandwiched between the upper and lower electrode sheets, the pressing position of the operator's finger and the distribution of the pressing force F (load) It is made to detect.

  FIG. 3 is a perspective view illustrating a configuration example of the pressure-sensitive sensor 101 in the input detection unit 45. The pressure-sensitive sensor 101 shown in FIG. 3 includes a pressure-sensitive electrode 110 and a pressure-sensitive electrode 210, and a sensor output employs a double-side extraction method.

  The pressure sensitive electrode 110 includes a silver (Ag) electrode 111 and a pressure sensitive coating portion 112. The silver electrode 111 has a cylindrical shape and is connected to the wiring pattern 571. The pressure-sensitive covering portion 112 covers the outer peripheral portion of the silver electrode 111 so as to be wrapped with pressure-sensitive ink or the like. The pressure-sensitive electrode 110 is formed by printing pressure-sensitive ink on the silver electrode 111 in the same manner as the silver electrode and the carbon electrode. For example, fluid pressure-sensitive ink containing conductive particles is uniformly applied to the silver electrodes 111 and 211 by screen printing. Thereafter, the coating surfaces of the pressure-sensitive electrode 110 and the pressure-sensitive electrode 210 are dried.

  The pressure-sensitive electrode 210 also includes a silver electrode 211 and a pressure-sensitive coating portion 212. The silver electrode 211 has a cylindrical shape and is connected to the wiring pattern 572. The pressure sensitive coating 212 is coated so that the outer periphery of the silver electrode 211 is wrapped with pressure sensitive ink or the like. The pressure sensitive electrode 210 is formed in the same manner as the pressure sensitive electrode 110. The contact resistance value of the contact point between the pressure-sensitive electrode 110 and the pressure-sensitive electrode 210 is determined by the specific resistance (resistivity) of the pressure-sensitive electrode layer and the connection resistance (ON resistance) between the upper and lower wiring patterns 571 and 572. .

  Next, a detection circuit example of the pressure sensitive sensor 101 in the display input device 100 will be described. FIG. 4 is a block diagram illustrating an example of a detection circuit of the pressure sensor 101. In this example, the pressure displacement of the pressure sensor 101 in the display input device 100 is read to detect the sliding position and pressing force of the operator's finger 30a and the like.

  The display input device 100 shown in FIG. 4 is a configuration example in which a portion corresponding to one operation key element is extracted, and includes an upper wiring pattern 571, a lower wiring pattern 572, a pressure sensor 101, a load resistance. RL, the comparison circuit 450, and the drive power supply 505 are comprised. The pressure sensitive sensor 101 corresponding to one operation key element is disposed between the wiring pattern 571 and the wiring pattern 572. For example, the wiring pattern 571 is connected to the ground line GND, and the wiring pattern 572 is connected to the drive power source 505 via the load resistance RL.

  A comparison circuit 450 is connected to the connection point between the load resistor RL and the wiring pattern 572, and the pressing displacement (change) of the pressure sensor 101 is read to detect the pressing force of the operating body. In this example, a voltage drop (hereinafter referred to as an output voltage V0) corresponding to the pressing force F applied to the pressure sensor 101 is generated in the load resistance RL. Two comparators 451 and 452 are used in the comparison circuit 450, and the comparators 451 and 452 are connected to the power supply line VCC and the ground line GND, respectively. The connection point between the load resistor RL and the wiring pattern 572 is connected to the + terminals of the comparators 451 and 452.

  The drive power supply 505 is connected to the negative terminals of the comparators 451 and 452 at each stage of the comparison circuit 450, and the reference voltage VREF is supplied. The position detection comparator 451 is supplied with the position detection threshold voltage Vth1 as the reference voltage VREF, and the pressing force determination threshold comparator 452 is supplied with the pressing force determination threshold voltage Vth2. The drive power supply 505 is connected to the power supply line VCC and the ground line GND.

  The threshold voltages Vth1 and Vth2 and the drive voltage Vo are set by command data D from an upper control system such as the CPU 32 (see FIG. 15). The comparator 451 compares the threshold voltage Vth1 with the output voltage V0, and outputs the position detection signal S1 to the upper control system when the output voltage V0 exceeding the threshold voltage Vth1 is obtained. The comparator 452 compares the threshold voltage Vth2 with the output voltage V0, and outputs the press detection signal S2 to the upper control system when the output voltage V0 exceeding the threshold voltage Vth2 is obtained.

  In this example, when the pressure-sensitive sensor 101 is not pressed, the pressure-sensitive electrode 110 and the pressure-sensitive electrode 210 are separated from each other, and a gap g is set between the pressure-sensitive electrode 110 and the pressure-sensitive electrode 210. . The gap g is provided to function as a normal membrane switch.

Next, an input detection example in the pressure sensor 101 will be described. 5 and 6 are block diagrams for explaining input detection examples (Nos. 1 and 2) in the pressure-sensitive sensor 101 having one operation key element.
In this example, the drive power source 505 applies a drive voltage Vo having a magnitude based on the command data D input from the upper control system between the pressure-sensitive electrodes 110 and 210 via the wiring pattern 571 and the wiring pattern 572. As an example, the threshold voltage Vth1 is set in the comparator 451, and the threshold voltage Vth2 is set in the comparator 452.

  With these as input conditions, according to the pressure-sensitive sensor 101 shown in FIG. 4, the drive power supply 505 inputs the command data D from the host control system, and the drive voltage Vo having a magnitude based on the command data D is applied to the wiring pattern. By applying the voltage between the pressure-sensitive electrodes 110 and 210 via the 571 and the wiring pattern 572, the pressure-sensitive sensor 101 is brought into a standby state. In this standby state, since the comparator 451 does not detect the output voltage V0 exceeding the threshold voltage Vth1, the position detection signal S1 is low level = “0”. Further, since the comparator 452 does not detect the output voltage V0 exceeding the threshold voltage Vth2, the pressing detection signal S2 is also at the low level = “0”.

  Then, according to the input detection example (position detection processing) of the pressure sensor 101 shown in FIG. 5, the pressure sensor 101 is pressed on the pressure sensor 101 from the thickness direction of the display unit 29 by the operator's finger 30 a or the like. This is a case where the pressure-sensitive electrode 110 and the pressure-sensitive electrode 210 of the sensor 101 are in contact with each other. At this time, since the operator's finger 30a or the like is pressing on the pressure sensor 101, the current i flowing through the load resistance RL changes. For example, it increases compared to the current i in a state where the pressure sensor 101 is not pressed. This change in current i appears due to a voltage drop across the load resistor RL.

  According to the position detection process of the comparison circuit 450, the sliding position of the operator's finger 30a or the like is detected by monitoring the output voltage V0 at the connection point between the load resistor RL and the wiring pattern 572. In this example, the comparator 451 compares the threshold voltage Vth1 with the output voltage V0 and monitors the output voltage V0 exceeding the threshold voltage Vth1. At this time, when the comparator 451 detects the output voltage V0 exceeding the threshold voltage Vth1, for example, the position detection signal S1 (which may be the position detection voltage V1) of the high level = “1” is the A of the upper control system. / D driver 31 etc. The A / D driver 31 outputs position detection information D1 obtained by analog / digital conversion of the position detection signal S1 to the upper control system (see FIG. 15).

  In this example, the pressure detection process is executed in parallel with the position detection process described above. According to the input detection example (press detection process) of the pressure sensor 101 shown in FIG. 6, the output voltage V0 at the connection point between the load resistance RL and the wiring pattern 572 is monitored, and displayed by the operator's finger 30a or the like. The pressing force F pushed into the pressure sensor 101 from the thickness direction of the part 29 is detected. In this example, the comparator 452 compares the threshold voltage Vth2 with the output voltage V0 and monitors the output voltage V0 exceeding the threshold voltage Vth2.

  At this time, when the pressure sensor 101 is further strongly pressed, the comparator 452 detects the output voltage V0 exceeding the threshold voltage Vth2, so that, for example, a press detection signal of high level = “1”. S2 (may be the pressing detection voltage V2) is output to the A / D driver 31 of the upper control system. The position detection voltage V1 and the pressure detection voltage V2 are different in magnitude (V1 ≠ V2). The A / D driver 31 outputs pressure detection information D2 obtained by analog-digital conversion of the pressure detection signal S2 to an upper control system.

  When the output voltage V0 exceeding the threshold voltage Vth2 is detected in the above example, the input is determined using the pressure detection information D2 as a trigger. As a result, the upper control system can detect the sliding position and the pressing force F of the operator's finger 30a and the like from the position detection information D1 and the pressure detection information D2.

  FIG. 7A is a graph showing an example of resistance-pressure characteristics of the module structure and the sheet-like pressure sensors 101 and 101 ′, and FIGS. 7B and 7C are conceptual diagrams showing a pressed state of the pressure sensor 101 and the like. Hereinafter, the resistance-pressure characteristics are referred to as RF characteristics.

  The vertical axis shown in FIG. 7A is the resistance value R [Ω] between the wiring pattern 571 and the wiring pattern 572 when the pressure sensor 101 having a module structure or the sheet-like pressure sensor 101 ′ is pressed. The sheet-like pressure sensor 101 ′ is operated to press the pressure-sensitive electrode 110 and the pressure-sensitive electrode 210 without interposing the display unit 29. The horizontal axis in the figure is the pressing force F [N] when the pressure sensitive sensor 101 or the like is pressed. The R-F characteristic # 101 indicated by the broken line is an example of a change in the resistance value R between the wiring pattern 571 and the wiring pattern 572 of the pressure-sensitive sensor 101 having a module structure. The R-F characteristic # 101 'indicated by the solid line is an example of a change in the resistance value R between the wiring pattern 571 and the wiring pattern 572 of the sheet-like pressure sensor 101'.

  According to the R-F characteristic # 101 of the pressure-sensitive sensor 101 in this example, the resistance value R between the wiring pattern 571 and the wiring pattern 572 is more linear than the R-F characteristic # 101 ′ of the pressure-sensitive sensor 101 ′ ( This is a case where the pressure sensor 101 is pressed by the pressing force F1 via the display unit 29 with the operator's finger 30a or the like as shown in FIG. 7B. In this case, the resistance value between the wiring pattern 571 and the wiring pattern 572 is R (I). Similarly, as shown in FIG. 7C, when the pressure-sensitive sensor 101 is pressed with the pressing force F2, the resistance value is R (II). The R-F characteristic curve has a resistance value change characteristic that tends to decrease almost linearly as the pressing force F increases.

  Further, according to the RF characteristic # 101 ′ of the pressure sensor 101 ′, it changes exponentially (linearly) as compared with the RF characteristic # 101 of the pressure sensor 101, as shown in FIG. 7B. This is a case where the operator presses the pressure sensor 101 directly with the pressing force F1 without using the display unit 29 with the operator's finger 30a or the like. In this case, the resistance value between the wiring pattern 571 and the wiring pattern 572 is R (I), but when the pressure sensor 101 is pressed with the pressing force F2, the resistance value is R (II) '. The resistance value change curve has a characteristic of decreasing exponentially as the pressing force F increases. In the case of the pressure sensor 101 ′, since the pressing force F is directly applied to the insulating sheet 51a and the like, the resistance value R between the wiring pattern 571 and the wiring pattern 572 is changed to a high pressing force F region near several hundred N. Due to difficulties.

  On the other hand, according to the pressure sensor 101 having a modular structure, the pressing force F is applied to the insulating sheet 51a and the like via the display unit 29, and the pressing force F is propagated to the pressure sensitive electrode 110. The pressing force F propagated to the sheet 51a can be dispersed. Therefore, according to the pressure-sensitive sensor 101 having the module structure, the resistance value R between the wiring pattern 571 and the wiring pattern 572 can be linearly changed up to a high pressing force F region near several hundred N.

  In this example, it is preferable that the display unit 29 has a property such as a rubber pressing member having a high elastic modulus. This is because, when a pressing force F is applied to the pressure-sensitive sensor 101 with a rubber-made pressing element having a high elastic modulus, the resistance value R tends to start to be saturated with a relatively low pressing force F. It has been confirmed that it will proceed slowly. That is, when the display unit 29 has a property like a rubber pressing member, since the elastic modulus is high, when the pressing force F is applied to the pressure sensor 101 through the display unit 29, the pressure sensitivity This is because the contact area between the upper and lower pressure-sensitive electrodes 110 and 210 of the sensor 101 gradually increases, and the contact resistance gradually decreases accordingly.

  On the contrary, when the display unit 29 has a property such as a resin presser having a low elastic modulus, the resistance value R changes at a relatively high pressure, but the change is steep, It has been found that the resistance value R tends to saturate in a narrow pressure region. This is because, when the display unit 29 has a property like a resin pressing member, the elastic modulus is low, and therefore when the pressing force F is applied to the pressure sensor 101 through the display unit 29, the feeling is reduced. This is probably because the contact area between the pressure sensitive electrodes 110 and 210 on the upper and lower sides of the pressure sensor 101 is rapidly expanded, and the contact resistance is also rapidly decreased.

  Further, when the diameter d of the opening 53a in the space member 53 shown in FIG. 2 is about 5 mm, if the pressing force F is continuously applied, the resistance value R tends to be saturated at a relatively low pressing force F. When the diameter d is 2 mm, the space opening area is smaller than when the diameter d = 5 mm. Therefore, the relationship between the pressing force F and the resistance value R tends to be closer to a straight line. ing.

  Further, regarding the thickness t2 'of the space member 53, for example, the thickness t2' = 0. 1 mm and t2 ′ = 0.125 mm (other conditions are constant), and the thickness t2 ′ of the space member 53 is 0. In the case of 1 mm, the resistance value R when the pressing force F is continuously applied changes relatively steeply. The thickness t2 'is 0. In the case of l25 mm, the resistance value R changes relatively slowly. The resistance value R when the pressing force F is applied is generally higher at t2 ′ = 0.1 mm than at t2 ′ = 0.125 mm. As a result, information input processing using the amount of pressing by the pressing force F as a parameter can be performed.

  Subsequently, another pressure-sensitive sensor 102 and the like in the input detection unit 45 will be described. FIG. 8 is a cross-sectional view illustrating a configuration example of another pressure-sensitive sensor 102 in the input detection unit 45. The pressure-sensitive sensor 102 shown in FIG. 8 includes a space member (not shown) between the lower wiring pattern 572 and the upper wiring pattern 571 of the base sheet 50, and both opposing surfaces have a concave shape. A pressure electrode 120 and a pressure sensitive electrode 220 are included. The pressure sensor 102 employs a sensor output double-side extraction method. The display unit 29 is surface-bonded on the wiring pattern 571. In order to obtain a desired stable contact resistance, the pressure-sensitive electrode 120 and the pressure-sensitive electrode 220 are provided with fine concaves or / and convexes on the surface of the coating film. In this example, the contact resistance between the pressure-sensitive electrode 120 and the pressure-sensitive electrode 220 is controlled by setting the degree of unevenness (surface roughness), the hardness of the protrusion, and the like.

  The pressure-sensitive electrode 120 includes a silver (Ag) electrode 121 and a pressure-sensitive coating part 122. The silver electrode 121 has a ring shape and is connected to the wiring pattern 571. The pressure-sensitive coating 122 covers the outer periphery of the silver electrode 121 with pressure-sensitive ink or the like. The pressure-sensitive electrode 120 is formed by printing pressure-sensitive ink on the silver electrode 121 in the same manner as the silver electrode and the carbon electrode. For example, fluid pressure-sensitive ink containing conductive particles is uniformly applied on a plane including the silver electrodes 121 and 221 by screen printing. Thereafter, the coating surfaces of the pressure-sensitive electrode 120 and the pressure-sensitive electrode 220 are dried.

  The pressure-sensitive electrode 220 is also configured to include a silver electrode 221 and a pressure-sensitive coating portion 222. The silver electrode 221 has a ring shape and is connected to the wiring pattern 572. The pressure-sensitive covering portion 222 is covered so as to wrap the outer peripheral portion of the silver electrode 221 with pressure-sensitive ink or the like. The pressure sensitive electrode 220 is formed in the same manner as the pressure sensitive electrode 120. The contact resistance value of the contact between the pressure-sensitive electrode 120 and the pressure-sensitive electrode 220 is determined by the specific resistance (resistivity) of the pressure-sensitive electrode layer and the connection resistance (ON resistance) between the upper and lower wiring patterns 571 and 572. .

  As a result, the contact variations of the contact points of the pressure-sensitive electrodes 120 and 220 can be offset by the contact unevenness shapes of the upper and lower pressure-sensitive electrodes 120 and 220, and as a result, variations in the R-F characteristics can be reduced. It becomes like this. Further, the fluctuation can be reduced while maintaining the linearity of the R-F characteristic of the pressure sensor 102. By making the contact points of the pressure-sensitive electrodes 120 and 220 uneven, it is possible to correct coating variations during screen printing.

FIG. 9 is a cross-sectional view illustrating a configuration example of another pressure-sensitive sensor 103 in the input detection unit 45.
The pressure-sensitive sensor 103 shown in FIG. 9 includes a pressure-sensitive electrode 130 and a pressure-sensitive electrode 230, and a sensor output employs a double-side extraction method.

  The pressure sensitive electrode 130 includes a silver (Ag) electrode 131 and a pressure sensitive coating portion 132. The silver electrode 131 has a cylindrical shape and is connected to the wiring pattern 571, but has a larger diameter than the silver electrode 111 shown in FIG. The pressure-sensitive covering portion 132 covers the outer periphery of the silver electrode 131 so as to be wrapped with pressure-sensitive ink or the like, but the thickness is set thinner than that of the pressure-sensitive covering portion 112 shown in FIG.

  The pressure-sensitive electrode 230 is also configured to include a silver electrode 231 and a pressure-sensitive coating portion 232. The silver electrode 231 has a cylindrical shape and is connected to the wiring pattern 572, but has a larger diameter than the silver electrode 211 shown in FIG. The pressure-sensitive covering portion 232 is covered so as to wrap the outer peripheral portion of the silver electrode 231 with pressure-sensitive ink or the like, but the thickness is set thinner than the pressure-sensitive covering portion 212 shown in FIG.

  The contact resistance value of the contact point between the pressure-sensitive electrode 130 and the pressure-sensitive electrode 230 is determined by the specific resistance (resistivity) of the pressure-sensitive electrode layer and the connection resistance (ON resistance) between the upper and lower wiring patterns 571 and 572. However, by making the pressure-sensitive covering portions 132 and 232 thinner, it is possible to obtain an R—F characteristic different from that of the pressure-sensitive sensor 101. For example, according to the pressure-sensitive sensor 103, when the resistance value R changes greatly due to a relatively low pressing force F and the high pressing force F is continuously applied, the resistance value R tends to be saturated.

  FIG. 10 is a cross-sectional view illustrating a configuration example of another pressure-sensitive sensor 104 in the input detection unit 45. The pressure-sensitive sensor 104 shown in FIG. 10 includes a pressure-sensitive electrode 140 and a pressure-sensitive electrode 240, and the sensor output employs a double-side extraction method.

  The pressure sensitive electrode 140 includes a silver (Ag) electrode 141 and a pressure sensitive coating portion 142. The silver electrode 141 has a cylindrical shape and is connected to the wiring pattern 571. The silver electrode 141 has the same diameter as the silver electrode 111 shown in FIG. The pressure-sensitive covering portion 142 covers the outer peripheral portion of the silver electrode 141 so as to be wrapped with pressure-sensitive ink or the like. The pressure sensitive coating part 142 is set to the same thickness as the pressure sensitive coating part 112 shown in FIG.

  The pressure sensitive electrode 240 includes a silver electrode 241 and a pressure sensitive coating portion 242. The silver electrode 241 has a columnar shape and is connected to the wiring pattern 572, but has a larger diameter than the silver electrode 211 shown in FIG. The pressure-sensitive covering portion 242 is covered so as to wrap the outer peripheral portion of the silver electrode 241 with pressure-sensitive ink or the like, but the thickness is set thinner than the pressure-sensitive covering portion 212 shown in FIG.

  That is, the pressure sensitive sensor 104 has a contact structure in which the pressure sensitive electrode 110 of the pressure sensitive sensor 101 and the pressure sensitive electrode 210 of the pressure sensitive sensor 103 are combined. The contact resistance value of the contact point between the pressure-sensitive electrode 140 and the pressure-sensitive electrode 240 is determined by the specific resistance (resistivity) of the pressure-sensitive electrode layer and the connection resistance (ON resistance) between the upper and lower wiring patterns 571 and 572. However, by making only the pressure-sensitive covering portion 142 thinner, it is possible to obtain an R—F characteristic different from that of the pressure-sensitive sensor 101 or the pressure-sensitive sensor 103.

  For example, according to the pressure sensor 104, when the pressing force F is continuously applied, the resistance value R starts to be saturated at a relatively low pressing force F compared to the pressure sensor 103, and the high pressing force F is continuously applied. In this case, the resistance value R is higher than that of the pressure sensitive sensor 103.

  FIG. 11 is a cross-sectional view illustrating a configuration example of another pressure-sensitive sensor 105 in the input detection unit 45. A pressure-sensitive sensor 105 shown in FIG. 11 includes a pressure-sensitive electrode 150 and an electrode pair pattern 250, and a sensor output adopts a single-side extraction method.

  The pressure sensitive electrode 150 includes a silver (Ag) electrode 151 and a pressure sensitive coating portion 152. The silver electrode 151 has a cylindrical shape and is connected to the wiring pattern 571. The silver electrode 151 has the same diameter as the silver electrode 111 shown in FIG. The pressure-sensitive coating portion 152 covers the outer periphery of the silver electrode 151 with pressure-sensitive ink or the like. The pressure sensitive coating 152 is set to the same thickness as the pressure sensitive coating 112 shown in FIG.

  The electrode pair pattern 250 has an F-shaped silver electrode pattern 251 and an F-shaped silver electrode pattern 252, and both F-shaped portions are combined in a comb shape. The silver electrode pattern 251 has an F shape and is connected to the wiring pattern 571, and the silver electrode pattern 252 has an F shape and is connected to the wiring pattern 572.

  That is, the pressure-sensitive sensor 105 has a single-sided contact structure in which the pressure-sensitive electrode 110 of the pressure-sensitive sensor 101 and the electrode pair pattern 250 adopting the sensor output single-side extraction method are combined. The contact resistance value of the contact between the pressure-sensitive electrode 150 and the electrode pair pattern 250 is determined by the specific resistance (resistivity) of the pressure-sensitive electrode layer and the connection resistance (ON resistance) between the wiring patterns 571 and 572 on the same plane. Is done. Since the pressure-sensitive sensor 105 has a single-sided contact structure, it is possible to obtain R-F characteristics different from those of the pressure-sensitive sensor 101, the pressure-sensitive sensor 103, and the like.

  For example, according to the pressure-sensitive sensor 105, when the pressing force F is continuously applied, the resistance value R starts to be saturated at a relatively low pressing force F compared to the pressure-sensitive sensor 103, and the high pressing force F is continuously applied. In this case, the resistance value R is higher than that of the pressure sensitive sensor 103.

  FIG. 12 is a cross-sectional view illustrating a configuration example of another pressure-sensitive sensor 106 in the input detection unit 45. The pressure-sensitive sensor 106 shown in FIG. 12 includes a pressure-sensitive electrode 160 and a pair of pressure-sensitive electrodes 26a and 26b, and the sensor output adopts a single-side extraction method.

  The pressure sensitive electrode 160 includes a silver (Ag) electrode 161 and a pressure sensitive coating portion 162. The silver electrode 161 has a cylindrical shape and is connected to the wiring pattern 571. The silver electrode 161 has the same diameter as the silver electrode 111 shown in FIG. The pressure-sensitive coating portion 162 covers the outer periphery of the silver electrode 161 with pressure-sensitive ink or the like. The pressure sensitive coating part 262 is set to the same thickness as the pressure sensitive coating part 112 shown in FIG.

  The pressure-sensitive electrode 26a includes a half-moon shaped silver electrode 261 and a pressure-sensitive covering portion 262 that covers the half-moon-shaped silver electrode 261. The pressure-sensitive electrode 26b includes a half-moon shaped silver electrode 263 and a pressure-sensitive coating portion 264 that covers the half-moon-shaped silver electrode 263. The pressure-sensitive electrodes 26a and 26b have both half-moon shaped chord portions opposed to each other. The pressure-sensitive electrode 26a has a thick half-moon shape and is connected to the wiring pattern 571, and the pressure-sensitive electrode 26b has a similar shape and is connected to the wiring pattern 572.

  That is, the pressure-sensitive sensor 106 has a single-sided contact structure in which the pressure-sensitive electrode 110 of the pressure-sensitive sensor 101 and the pressure-sensitive electrodes 26a and 26b adopting the sensor output single-side extraction method are combined. The contact resistance value of the contact point between the pressure-sensitive electrode 160 and the pressure-sensitive electrodes 26a and 26b is the specific resistance (resistivity) of the pressure-sensitive electrode layer and the connection resistance (ON resistance) between the wiring patterns 571 and 572 on the same plane. Determined by. Since the pressure-sensitive sensor 106 has a single-sided contact structure, it is possible to obtain R-F characteristics different from those of the pressure-sensitive sensor 101, the pressure-sensitive sensor 103, and the like.

  For example, according to the pressure sensor 106, when the pressing force F is continuously applied, the resistance value R starts to be saturated at a relatively low pressing force F compared to the pressure sensor 103, and the high pressing force F is continuously applied. In this case, the resistance value R is higher than that of the pressure sensitive sensor 103.

  As described above, according to the display input device 100 as the first embodiment, when the information is input by the sliding or pressing operation on the display screen by the operator's finger 30a, the rigidity of the display unit 29 is reduced. In the trend of thinning, the display unit 29 becomes a transmission member of the pressing force F, and the sliding position of the operator's finger 30a and the amount of pressing force can be detected on the back side of the display unit.

  Therefore, as compared with a display input method in which a touch panel is provided on the display unit 29, good optical characteristics of the display unit 29 are ensured, and position information of an operating body for selecting the input operation image is displayed below the display surface. It can be detected accurately.

  As a result, a display input method in which the pressure-sensitive sensors 101, 102, 103, 104, 105 or 106 modularized under the display unit 29 can be realized. In addition, in the display unit 29 having a structure in which the surface protection panel and the flat display element are integrated, the strength of the electronic device to which the display unit 29 is applied and the stability of the input detection accuracy can be improved as compared with the conventional method. became.

  Furthermore, according to the present invention, since the input detection unit 45, which is a single device, is provided with a position detection function and a pressing force detection function, the number of parts can be reduced compared to the conventional method, and the cost can be reduced. I was able to plan. In addition, the drive and management system of the electronic device can be simplified, which greatly contributes to the reduction of power consumption.

  In addition, since the “plane-like” input detection unit 45 is provided below the display unit 29, the display input device 100 can be easily handled in the assembly stage as compared with the conventional “frame-like” input detection unit. The production efficiency can be improved. In addition, the display unit 29 can be thinned and has high visibility.

  FIG. 13 is a perspective view showing a configuration example of a mobile phone 200 as a second embodiment provided with the display input device 100. In this example, the mobile phone 200 includes the case (case) in which the display input device 100 described in the first embodiment is mounted, and the pressure-sensitive sensor 101 and the pressure-sensitive sensors 102, 103, 104, 105, or 106. A mechanical component in which the input detection unit 45 having the pressure sensor module designed optimally and the display unit 29 (pressing force transmission member) are combined is mounted.

  A mobile phone 200 shown in FIG. 13 constitutes an example of an electronic device, and has a display input function for inputting information by sliding or pressing on the display screen with an operator's finger 30a or the like. In addition to the telephone function, the cellular phone 200 performs various data processing such as voice and video processing and a tactile input presentation function.

  The mobile phone 200 includes a non-foldable casing 401 having an operation surface and a display input device 100 having a pressing force detection and tactile input function. The display input device 100 constitutes an example of the function of the display input means, and is a device that inputs information in response to sliding and pressing operations of the operator's finger 30a and the like on the input detection surface on the display screen. The housing 401 includes an upper operation frame (cabinet) 41 and a lower container 42 (case). The lower container 42 is a box with a bottom.

  The display input device 100 is provided so as to be fitted into the upper surface operation frame body 41, and is adapted to input three-dimensional information in the X, Y, and Z directions by a sliding and pressing operation by an operator's finger 30a or the like. The The display input device 100 has an operation surface as described in the first embodiment and displays an input operation image. The display input device 100 is connected to the surface of the display unit 29 opposite to the operation surface. A planar input detection unit 45. An organic EL display element, a liquid crystal display element, or the like is used for the display unit 29, and input information such as an icon image is displayed.

  The input detection unit 45 operates so as to detect a pressing force F applied through the display unit 29. The input detection unit 45 constitutes an input device, and when the operator's (user) finger 30a touches or pushes the operation surface of the display unit 29, a pressing force in a direction substantially perpendicular to the operation surface. A change in F is detected in multiple stages, and the input detection information is linked with the application operation of the mobile phone 200 to realize a display input function.

  In this example, the input detection unit 45 is provided on the rear surface side (bottom surface side) of the display unit 29 having an operation surface, and the sliding position of the operator 30 such as the finger 30a and the pressing force F (pushing amount). It is made to detect. For the input detection unit 45, for example, a display input method in which pressure sensors 101, 102, 103, 104, 105 or 106 having a module structure are arranged is adopted.

  An ultra-small speaker 36b with an actuator function that constitutes the function of a vibrating body is disposed on the upper left of the center of the upper operation frame body 41, and the display unit is based on a position detection signal obtained from the input detection unit 45. Vibration is applied to the operation surface 29. The speaker 36b has the functions of a call receiver and a tactile sense actuator. In addition to the audio signal, a 200 Hz vibration control signal for tactile presentation is input to the speaker 36b.

  In this example, the display unit 29 is divided into two display areas, input information such as a plurality of button icons is displayed in the upper display area, and an operation panel image is displayed in the lower display area. In this example, when the icon image for input operation displayed on the display unit 29 is operated with a finger, a tactile sensation is given to the operator's finger touching the display screen together with a click sound (cyber switch operation sound) from the speaker 36b. It is made to present.

  In this example, the operation panel image displayed on the display unit 29 includes a plurality of push button switches 92. For example, the push button switch 92 includes “0” to “9” numeric keys, symbol keys such as “*” and “#”, hook buttons such as “on” and “off”, menu keys, and the like. A camera 34 is attached to the rear surface of the display unit 29 and is operated to capture a subject image. A telephone microphone 93 is attached below the upper surface of the upper operation frame 41 so as to function as a transmitter.

  A connector 99 such as a USB terminal is disposed on the side surface of the lower container 42 so that communication processing with an external device is possible. A module type antenna 96 is attached to the inside of the lower container 42, and a loud sound speaker (not shown) is provided around the inside of the lower container 42 so as to release sound (music) added to the incoming melody or video data. It is made to sound. A circuit board 97 is provided inside the lower container 42. Further, a battery 94 is built in the housing, and power is supplied to the circuit board 97, the display unit 29, and the like.

  Next, an arrangement example of the display input device 100 in the mobile phone 200 will be described. FIG. 14 is a perspective view illustrating an arrangement example of the display input device 100. The display input device 100 in the mobile phone 200 shown in FIG. 14 includes the planar input detection unit 45 and the display unit 29 having the pressure-sensitive sensor module structure shown in FIG. 1, and the display unit 29 is on the input detection unit 45. It is configured to be laminated. A flexible wiring 57 ′ is connected to one end of the input detection unit 45, and wiring patterns 571 and 572 connected to the pressure sensitive electrodes 110 and 210 as described with reference to FIG. 1 are drawn out.

  The display unit 29 includes a self-luminous organic material 29b and a sealing layer 29a that form an organic EL display element. The self-luminous organic material 29b is sealed with a sealing layer 29a. A flexible wiring 58 'is connected to one end of the sealing layer 29a, and a wiring pattern group for driving the self-luminous organic material 29b is drawn out.

  In this example, the speaker 36b with an actuator function disposed at the upper left center of the surface of the upper operation frame body 41 shown in FIG. 13 is attached to the side surface of the sealing layer 29a, for example. The size of the speaker 36b is about width × length × height = 6 mm × 15 mm × 2.8 mm.

  On the display unit 29, a base panel 29d is provided in which a transparent material such as TMD or MDG having a thickness of about 0.75 mm to 1.15 mm is formed in a sheet shape. The upper surface of the base panel 29d is integrated by being pressed by an upper surface operation frame body 41 having a frame shape constituting the housing 401. The upper operation frame 41 is made of an aluminum plate having a thickness of about 0.3 mm, for example. As a result, the input detection unit 45 and the display unit 29 (pressing force transmission member) having a pressure-sensitive sensor module structure as shown in FIG. 13 are combined, and a mechanical component having excellent optical characteristics can be configured. .

  FIG. 15 is a block diagram illustrating a configuration example of a control system of the mobile phone 200. A cellular phone 200 shown in FIG. 15 is configured by mounting blocks of various functions on a circuit board 97 of the lower container 42. Note that portions corresponding to those shown in FIGS. 13 and 14 are denoted by the same reference numerals. The mobile phone 200 includes a control unit 15, a reception unit 18, a transmission unit 22, an antenna duplexer 23, an input detection unit 45, a display unit 29, a power supply unit 33, a camera 34, a storage unit 35, a ring melody speaker 36a, and an actuator. It has a speaker 36b with a function. As the display unit 29 and the input detection unit 45, the display input device 100 described in the first embodiment is used.

  The control unit 15 illustrated in FIG. 15 includes an image processing unit 26, an A / D driver 31, a CPU 32, and a memory unit 37. The A / D driver 31 is supplied with a position detection signal S1 and a pressure detection signal S2 from the input detection unit 45. The A / D driver 31 converts an analog signal composed of the position detection signal S1 and the press detection signal S2 into digital data in order to distinguish between the functions of cursoring and icon selection. In addition to this, the A / D driver 31 performs arithmetic processing on this digital data to detect whether it is a cursoring input or icon selection information, and flag data D31 or position detection information D1 or press detection for distinguishing between the cursoring input and the icon selection. The information D2 is supplied to the CPU 32. These calculations may be executed in the CPU 32.

  A CPU 32 is connected to the A / D driver 31. The CPU 32 controls the entire telephone set based on the system program. The storage unit 35 stores system program data for controlling the entire telephone. A RAM (not shown) is used as a work memory. When the power is turned on, the CPU 32 reads out the system program data from the storage unit 35 and develops it in the RAM, starts up the system and controls the entire mobile phone. For example, the CPU 32 receives the position detection information D1, the press detection information D2 and the flag data D31 (hereinafter also simply referred to as input data) from the A / D driver 31, and sends predetermined command data D to the power supply unit 33, the camera 34, Control is performed such that the data is supplied to devices such as the storage unit 35, the memory unit 37, and the video & audio processing unit 44, the reception data from the reception unit 18 is captured, and the transmission data is transferred to the transmission unit 22.

  In this example, the CPU 32 compares the pressure detection information D2 obtained from the input detection unit 45 with a preset pressing determination threshold value Fth, and controls vibration of the speaker 36b with an actuator function based on the comparison result. The memory unit 37 is controlled. For example, if the tactile sensation propagated from the input detection surface at the pressed position via the display unit 29 of the input detecting unit 45 is #a and #b, the tactile sense #a is the operator's finger 30a at the pressed position. It is obtained by changing the input detection surface corresponding to the pressing force F from a low frequency and small amplitude vibration pattern to a high frequency and large amplitude vibration pattern. The tactile sense #b is obtained by changing the input detection surface corresponding to the pressing force F of the finger 30a of the operator at the pressed position from a high frequency and large amplitude vibration pattern to a low frequency and small amplitude vibration pattern. can get.

  A storage unit 35 is connected to the above-described CPU 32, and for example, display information D41 for displaying an input item selection display screen in a three-dimensional manner, an icon selection position corresponding to the display information D41, and a vibration mode. Control information Dc and the like are stored for each display screen. The control information Dc can generate a plurality of different tactile sensations synchronized with the application (three-dimensional display and various display contents) in the display unit 29, and a plurality of specific vibration waveforms that generate the tactile sensations, and An algorithm for setting a specific haptic generation mode for each application is included. For the storage unit 35, an EEPROM, a ROM, a RAM, or the like is used.

  In this example, the CPU 32 performs display control of the display unit 29 and output control of the speaker 36b with an actuator function based on the position detection information D1, the pressure detection information D2, and the flag data D31 output from the A / D driver 31. . For example, the control unit 15 reads the control information Dc from the storage unit 35 based on the position detection signal S1 and the pressure detection signal S2 obtained from the input detection unit 45, accesses the memory unit 37, and the speaker 36b with an actuator function. Control is performed so as to supply the vibration generation signal Sa.

  For example, the CPU 32 activates the tactile sense #a when the input detection unit 45 detects the press detection information D2 exceeding the press determination threshold Fth, and then detects the press detection information D2 below the press determination threshold Fth. The memory unit 37 is read and controlled to start #b. In this way, it is possible to generate different vibration patterns according to the “pressing force” of the operator's finger 30a or the like.

  A memory unit 37 is connected to the CPU 32, and vibration generation data Da is read based on the control information Dc from the CPU 32. The vibration generation data Da has an output waveform composed of a sine waveform. A video & audio processing unit 44 is connected to the memory unit 37, and each vibration generation data Da is supplied to the video & audio processing unit 44, and the vibration generation data Da is subjected to audio processing (digital / analog conversion / amplification etc.). The vibration generation signal Sout2 ′ is supplied to the speaker 36b with an actuator function. The speaker 36b vibrates based on the vibration generation signal Sout2 '.

  In this example, the memory unit 37 stores a pressing determination threshold value Fth corresponding to each application. For example, the pressing determination threshold value Fth is stored in advance in a ROM or the like provided in the storage unit 35 as a trigger parameter. Under the control of the CPU 32, the storage unit 35 inputs the press detection information D2, compares the press determination threshold Fth set in advance with the press force F obtained from the press detection information D2, and determines that Fth> F. Processing or determination processing such as Fth ≦ F is executed.

  For example, when the pressing determination threshold Fth = 100 [gf] is set in the memory unit 37, the input detection surface is vibrated based on the vibration pattern for obtaining the tactile sensation of the classic switch. When the pressing determination threshold Fth = 20 [gf] is set, the input detection surface is vibrated based on a vibration pattern for obtaining a tactile sense of the cyber switch.

  In addition to the memory unit 37, the image processing unit 26 is connected to the CPU 32, and the display information D41 for displaying button icons and the like in a three-dimensional manner is subjected to image processing. Display information D41 after image processing is supplied to the display unit 29. In this example, the CPU 32 controls display of the display unit 29 so that the button icons in the display screen are displayed in a three-dimensional manner with a perspective in the depth direction.

  The display input device 100 configured in this way, for example, presses (contacts) one of a plurality of button icons displayed on the display screen for selecting an input item, and moves the input detection unit 45 to Z on the display screen. When pressed in the direction, a screen input operation is performed with a tactile sensation. The operator 30 receives the vibration of the finger 30a and feels the vibration of each button icon as a tactile sensation.

  The display contents of the display unit 29 are determined by the eyes of the operator's eyes 30b, and the sound emission from the speakers 36a, 36b, etc. is determined by the sounds of the operator's ears 30c. The display unit 29 may be connected to the CPU 32 described above, and an incoming video may be displayed on the display unit 29 based on the video signal Sv in addition to the icon selection screen described above.

  Also, the antenna 96 shown in FIG. 15 is connected to the antenna duplexer 23 and receives a radio wave from the other party from a base station or the like when an incoming call is received. A receiving unit 18 is connected to the antenna duplexer 23, receives reception data guided from the antenna 96, demodulates video and audio, and outputs demodulated video and audio data Din to the CPU 32 and the like. The A video & audio processing unit 44 is connected to the receiving unit 18 through the CPU 32, and digital audio data is converted from digital to analog to output an audio signal Sout1, or digital video data is converted from digital to analog and converted into a video signal. Sv is output.

  Connected to the video & audio processing unit 44 are a speaker 36a for large sound and a speaker 36b with an actuator function for constituting a receiver. The speaker 36a is configured to ring a ringtone, a ringtone or the like based on the acoustic signal Sout1 when an incoming call is received. The speaker 36b receives the audio signal Sout2 and expands the voice of the other party and propagates it to the ear 30c. Further, the speaker 36b vibrates based on the vibration generation signal Sout2 'when presenting a tactile sensation.

  In addition to the speakers 36a and 36b, the video & audio processing unit 44 is connected to a microphone 93 that constitutes a transmitter, and collects an operator's voice 30d and outputs an audio signal Sin. The video & audio processing unit 44 performs analog / digital conversion on the analog audio signal Sin to be sent to the other party at the time of calling and outputs digital audio data, or analog / digital conversion of the analog video signal Sv. Digital video data is output.

  In addition to the receiving unit 18, the transmitting unit 22 is connected to the CPU 32 to modulate the video and audio data Dout and the like to be sent to the other party, and supply the modulated transmission data to the antenna 96 through the antenna duplexer 23. To be made. The antenna 96 radiates a radio wave supplied from the antenna duplexer 23 toward a base station or the like.

  In addition to the transmission unit 22, a camera 34 is connected to the CPU 32 described above, and a subject is photographed. For example, still image information and operation information are transmitted to the other party through the transmission unit 22. The camera 34 may be provided on the back side of the upper housing 20. The power supply unit 33 includes a battery 94, and includes a CPU 32, a reception unit 18, a transmission unit 22, a display unit 29, a camera 34, a storage unit 35, a memory unit 37, a video & audio processing unit 44, and an input detection unit 45. DC power is supplied. In this example, the case where the memory unit 37 is provided separately from the video & audio processing unit 44 has been described, but a storage device provided in the video & audio processing unit 44 may also be used. The number of parts can be reduced.

  Subsequently, an example of input processing in the mobile phone 200 will be described with reference to FIGS. 4, 5, 6, and 16. FIG. 16 is a flowchart showing an input processing example of the display input device 100 in the mobile phone 200. In this example, the drive power supply 505 shown in FIG. 4 applies a drive voltage Vo having a magnitude based on the voltage application command data D input from the CPU 32 via the wiring pattern 571 and the wiring pattern 572. Apply between. As an example, the threshold voltage Vth1 is set in the comparator 451, and the threshold voltage Vth2 is set in the comparator 452.

  With these as input conditions, the position detection signal S1 and the pressure detection signal S2 are detected by the A / D driver 31 in step ST21 of the flowchart shown in FIG. According to the pressure-sensitive sensor 101 shown in FIG. 4, the driving power source 505 receives the command data D for voltage application from the CPU 32, and the driving voltage Vo having a magnitude based on the command data D is supplied to the wiring pattern 571 and the wiring pattern 572. Although applied in the meantime, the pressure-sensitive electrodes 110 and 210 are open. In this state, since the comparator 451 does not detect the output voltage V0 exceeding the threshold voltage Vth1, the position detection signal S1 is low level = “0”. Further, since the comparator 452 does not detect the output voltage V0 exceeding the threshold voltage Vth2, the pressing detection signal S2 is also at the low level = “0”.

  And the position detection process in step ST22 and the press detection process in step ST25 are processed in parallel. According to the pressure-sensitive sensor 101 shown in FIG. 5, the pressure sensor 101 is pressed by the operator's finger 30a or the like through the display unit 29, and the display unit 29 and the wiring pattern 571 are changed into a concave shape. Is the case. Further, since the operator's finger 30a or the like is pressing on the pressure-sensitive electrode 110, the current i flowing through the load resistance RL changes. For example, it decreases or increases compared to the current i in a state where the pressure-sensitive electrode 110 is not pressed. This change in current i appears due to a voltage drop across the load resistor RL.

  According to the position detection process in step ST22, the sliding position of the operator's finger 30a or the like is detected by monitoring the output voltage V0 at the connection point between the load resistance RL and the pressure sensitive electrode 210. In this example, in step ST23, the comparator 451 compares the threshold voltage Vth1 with the output voltage V0 and monitors the output voltage V0 exceeding the threshold voltage Vth1.

  At this time, when the comparator 451 detects the output voltage V0 exceeding the threshold voltage Vth1, for example, the position detection signal S1 (which may be the position detection voltage V1) of high level = “1” is sent to the A / D driver 31. Is output. The A / D driver 31 outputs position detection information D1 obtained by analog / digital conversion of the position detection signal S1 to the CPU 32. When the output voltage V0 exceeding the threshold voltage Vth1 is detected, the process proceeds to step ST24, and the high-level position detection information D1 is stored in the storage unit 35 as shown in FIG.

  According to the pressure detection process executed in step ST25 in parallel with the position detection process described above, the output voltage V0 at the connection point between the load resistance RL and the wiring pattern 572 is monitored, thereby pressing the operator's finger 30a or the like. The pressure F is detected. In this example, in step ST26, the comparator 452 compares the threshold voltage Vth2 with the output voltage V0, and monitors the output voltage V0 exceeding the threshold voltage Vth2.

  At this time, when the pressure on the pressure-sensitive electrode 110 is further strongly pressed, the comparator 452 detects the pressure detection voltage V2 exceeding the threshold voltage Vth2, and therefore, for example, pressure detection of high level = “1”. The signal S2 is output to the A / D driver 31. The position detection voltage V1 and the pressure detection voltage V2 are different in magnitude (V1 ≠ V2). The A / D driver 31 outputs the pressure detection information D2 obtained by analog-digital conversion of the pressure detection signal S2 to the CPU 32.

  When the output voltage V0 exceeding the threshold voltage Vth2 is detected in the above example, the process proceeds to step ST27, and the input is determined using the press detection information D2 as a trigger. Accordingly, the CPU 32 can detect the sliding position and the pressing force F of the operator's finger 30a and the like from the position detection information D1 and the pressure detection information D2. Thereafter, the process proceeds to step ST28, where the CPU 32 determines the end. For example, power off information of the mobile phone 200 is detected. If power-off information is detected, the input process is terminated. When the power-off information is not detected, the process returns to step ST1 and the input process is continued.

  Thus, according to the mobile phone 200 as the second embodiment, since the display input device 100 according to the present invention is provided, the display unit 29 is being traced as the rigidity of the display unit 29 is reduced and the thickness is reduced. 29 is a pressing force transmission member, and the sliding position of the operator's finger 30a and the amount of pressing force can be detected by the input detection unit 45 of the pressure sensor module structure on the back side of the display unit.

  Therefore, compared with a display input method in which a touch panel is provided on the display unit 29, the good optical characteristics of the display unit 29 and the position information of the operator's finger 30a for selecting the input operation image are accurately displayed below the display surface. Can be detected. Thereby, in the display unit 29 having a structure in which the surface protection panel and the organic EL display element made of the self-luminous organic material 29b are integrated, the strength of the mobile phone 200 to which the display unit 29 is applied and the stability of the input detection accuracy thereof. Can be held.

  Next, another display input device 129 that can be mounted on the mobile phone 200 will be described. FIG. 17 is a perspective view showing a configuration example of a display input device 129 with a tactile variable sheet function as a third embodiment. In this embodiment, the input detection unit 45 shown in FIG. 14 has an electrode of a predetermined size and is provided with a conductive polymer material for input detection disposed at a predetermined position of the base material. A case where a tactile sheet member having a power supply unit for supplying a driving voltage to the polymer material electrode is used will be described.

  The display input device 129 illustrated in FIG. 17 includes a non-transparent tactile variable sheet unit 180 and the display unit 29 on the tactile variable sheet unit 180. An organic EL display element is used for the display unit 29. The tactile variable sheet portion 180 is configured by laminating a conductive rubber 182 and a wiring film portion 184 on a base film 181 having a wiring pattern 183. The conductive rubber 182 is composed of a plurality of element muscle portions 54 arranged in a matrix, for example. The element muscle portion 54 is made of a non-transparent and conductive sheet-like polymer material (artificial muscle). The element muscle portion 54 includes a flexible and strong conductive embroidery film having an operating voltage of about 1.5 V, and a conductive gel polymer that can swell greatly in a good solvent.

  The display unit 29 includes an intermediate layer film 29h below the sealing layer 29a, has a self-luminous organic material 29b in the sealing layer 29a, and laminates the intermediate layer film 29c and the base panel 29d on the sealing layer 29a. Configured. The display input device 129 is mounted on the upper operation frame body 41 shown in FIG.

  FIG. 18 is a cross-sectional view illustrating a configuration example of the display input device 129. A display input device 129 shown in FIG. 18 has a non-transparent tactile variable sheet portion 180. The tactile variable sheet portion 180 has a base film 181, and a wiring pattern 183 connected to the electrode 51 is disposed on the base film 181. The wiring pattern 183 is formed by patterning a conductive member such as copper, gold, or silver on the base film 181. In the electrode 51, for example, each terminal portion of the wiring pattern 183 may be formed in a round pattern. A conductive rubber 182 is laminated on the base film 181.

  The base film 181 is composed of a polyethylene terephthalate (PET) -based transparent material having a thickness of about 0.1 [mm], and an ITO film that forms a wiring pattern group 57 patterned on the material. The wiring pitch of the wiring pattern group 57 is about 1/2 to 1 times the arrangement pitch of the display pixels.

  A wiring film portion 184 is provided on the conductive rubber 182. For the film part 184, an insulating and non-transparent polyimide film member is used. A wiring pattern group 57 for the tactile sensation variable sheet is provided on the lower surface side of the film part 184, and a wiring pattern group 58 for display is provided on the upper surface side thereof. On the upper surface side of the conductive rubber 182, the electrodes 52 shown in FIG. 18 are disposed at positions corresponding to the individual operation key images, and the plurality of electrodes 52 are individually connected to the wiring pattern group 57.

  A display part 29 having an organic EL display element is bonded to the upper part of the wiring film part 184 with an adhesive or the like via an intermediate layer film 29h. The display unit 29 includes a sealing layer 29a, a self-luminous organic material 29b, an intermediate layer film 29c, a base panel 29d, and an electrode pattern 29e. The sealing layer 29a has a frame shape as shown in FIG. 17, is provided on the intermediate layer film 29h, and seals the self-luminous organic material 29b.

  An intermediate layer film 29c is bonded to the top of the sealing layer 29a and the self-luminous organic material 29b with an adhesive or the like. An insulating and non-transparent polyimide film member is used for the intermediate layer film 29c. A base panel 29d is disposed on the intermediate layer film 29c. A transparent film member or a glass member is used for the base panel 29d.

  An electrode pattern 29e is disposed on the lower surface side of the base panel 29d. The electrode pattern 29e is made of an ITO film, and may be either a solid pattern divided into single or block, or a pattern divided into a matrix. The wiring pattern group 58 on the lower surface side of the intermediate layer film 29h applies a driving voltage to each pixel of the self-luminous organic material 29b together with the electrode pattern 29e.

  The above-described wiring pattern groups 57 and 58 are connected to a driving power source 505 as shown in FIG. 20, and the driving power source 505 applies a DC driving voltage between the electrode 51 and the electrode 52 for each operation key image. Is made. At that time, the magnitude of the DC drive voltage may be varied and applied. Thus, a display input device 129 applicable to the mobile phone 200 is configured.

  Thus, according to the display input device 129, since the tactile variable sheet portion 180 is configured below the display unit 29 (organic EL display element), the display unit 29 serves as a pressing force transmission member. The sliding position of the finger 30a and the amount of pressing force can be detected by the tactile variable sheet unit 180 on the back side of the display unit.

  Moreover, when the display surface is observed to be flat, the icon image displayed on the display unit 29 is touched by hand, and the upper part of the conductive rubber 182 under the display screen is slid to present an input operation with a feeling of unevenness. become able to. As a result, it is possible to provide a display input device 129 having a programmable touch-sensitive tactile variable sheet function in a structure in which the surface protection panel and the display unit 29 made of an organic EL display element are integrated.

  Next, another display input device 229 that can be mounted on the mobile phone 200 will be described. FIG. 19 is a cross-sectional view illustrating a configuration example of a display input device 229 with a tactile variable sheet function that can be applied to the mobile phone 200.

  A display input device 229 illustrated in FIG. 19 includes a transparent tactile variable sheet unit 180 below the display unit 29. A liquid crystal display element is used for the display unit 29 instead of the organic EL display element. In this example, since the backlight 29g is provided below the touch-sensitive variable sheet portion 180, the member positioned above the backlight is required to have transparency, so the “non-transparent” member described in FIG. Can be read as “transparency”.

  The transparent tactile variable sheet portion 180 has a transparent base film 181 on an upper part of the backlight 29g shown in FIG. 19, and is configured by laminating a wiring pattern 183 and a conductive rubber 182 on the base film 181. Is done. The wiring pattern 183 is bonded to the upper part of the base film 181 with an adhesive or the like, and a conductive rubber 182 is bonded on the wiring pattern 183 with the same agent. The conductive rubber 182 is made of a transparent and conductive sheet-like polymer material (artificial muscle).

  A wiring film portion 184 is provided on the conductive rubber 182. For the film portion 184, an insulating and transparent polyimide film member is used. A wiring pattern group 57 for a tactile variable sheet is provided on the lower surface side of the film portion 184, and a wiring pattern group 58 for a liquid crystal display element is provided on the upper surface side thereof. In this example, the electrodes 52 shown in FIG. 19 are disposed on the upper surface side of the conductive rubber 182 at positions corresponding to the individual operation key images, and the plurality of electrodes 52 are individually connected to the wiring pattern group 57. The

  A display portion 29 having a liquid crystal display element is bonded to the upper portion of the wiring film portion 184 with an adhesive or the like. The display unit 29 includes a sealing layer 29a, a liquid crystal material 29f, an intermediate layer film 29c, a base panel 29d, and an electrode pattern 29e. The sealing layer 29a has a frame shape as shown in FIG. 15, is provided on the intermediate layer film 29h, and seals the liquid crystal material 29f.

  An intermediate layer film 29c is bonded to the top of the sealing layer 29a and the liquid crystal material 29f with an adhesive or the like. A base panel 29d is disposed on the intermediate layer film 29c, and an electrode pattern 29e is disposed on the lower surface side of the base panel 29d. The wiring pattern group 58 on the lower surface side of the intermediate layer film 29h applies a driving voltage to each pixel of the liquid crystal material 29f together with the electrode pattern 29e.

  The wiring pattern groups 57 and 58 are connected to a driving power source 505 (not shown), and the driving power source 505 applies a DC driving voltage between the electrodes 51 and 52 for each operation key image. At that time, the magnitude of the DC drive voltage may be varied and applied. Thus, a display input device 229 applicable to the mobile phone 200 is configured. The other constituent members and functions are the same as those of the display input device 129 and have the same functions, and thus the description thereof is omitted.

  In this way, the display input device 229 having the tactile variable sheet portion 180 is configured below the display unit 29 (liquid crystal display element), so that the display unit 29 serves as a pressing force transmission member and the operator's finger 30a. Thus, the sliding position and the amount of pressing force can be detected by the tactile variable sheet 180 on the back side of the display unit. Moreover, when the display surface is observed to be flat, the icon image displayed on the display unit 29 is touched by hand, and the upper part of the conductive rubber 182 under the display screen is slid to present an input operation with a feeling of unevenness. become able to. As a result, even in a structure in which the surface protection panel and the display unit 29 including the liquid crystal display element are integrated, the display input device 229 having a programmable touch-sensitive tactile sheet function can be provided.

  FIG. 20 is a block diagram illustrating an example of a detection circuit for one element of an operation key such as the display input device 129 or 229. In this embodiment, a display input device 129 in which an operator's finger 30a and the like are pushed through a display unit 29 is configured, and in the display input device 129, a conductive rubber 182 (element muscle portion 54 of one element of an operation key). Is read by the tactile variable sheet portion 180 constituting the input detection portion 45, and the sliding position and the pressing force are detected.

  The display input device 129 shown in FIG. 20 includes a tactile variable sheet portion 180, a load resistance RL, a comparison circuit 450, and a drive power source 505 in a configuration example in which a portion corresponding to one element of an operation key is extracted. The

  The tactile variable sheet portion 180 includes a lower electrode 51, an upper electrode 52, and an element muscle portion 54 (which may be a conductive rubber 182). In this example, the element muscle portion 54 corresponding to one operation key element is sandwiched between the electrode 51 and the electrode 52. The electrode 51 is connected to the drive power source 505 via the load resistance RL, and the electrode 52 is connected to, for example, the ground line GND via the wiring pattern group 57.

  A comparison circuit 450 is connected to the connection point between the load resistor RL and the electrode 51 so as to read the pressing displacement (change) of the element muscle portion 54 that is pushed in via the display portion 29 and detect the pressing force of the operating body. Become. In this example, a voltage drop (hereinafter referred to as an output voltage V0) corresponding to the pressing force F applied to the element muscle portion 54 is generated in the load resistance RL. 45n are used for the comparison circuit 450, and the comparators 451, 452,... 45n are connected to the power supply line VCC and the ground line GND, respectively. The connection point between the load resistance RL and the electrode 51 is connected to the + terminal of the comparator 451.

  The driving power supply 505 is connected to the negative terminals of the comparators 451, 452,... 45n at each stage of the comparison circuit 450, and the reference voltage VREF is supplied. The position detection comparator 451 is supplied with the position detection threshold voltage Vth1 as the reference voltage VREF, and the pressing force determination threshold comparator 452 is supplied with the pressing force determination threshold voltage Vth2. Similarly, a pressing force determination threshold voltage Vthn is supplied to the pressing force determination threshold comparator 45n.

  The drive power supply 505 is connected to the power supply line VCC and the ground line GND. The drive power source 505 has a programmable function of supplying the drive voltage Vo to the electrodes 51 and 52 of the conductive rubber 182 individually or in groups. The threshold voltages Vth1, Vth2,... Vthn and the drive voltage Vo are set by command data D from the CPU 32. The comparator 451 compares the threshold voltage Vth1 with the output voltage V0, and outputs a position detection signal S1 (position detection voltage V1) to the A / D driver 31 when an output voltage V0 exceeding the threshold voltage Vth1 is obtained. When the position detection signal S1 forms binary data, the A / D driver 31 is omitted and output to the CPU 32.

  The comparator 452 compares the threshold voltage Vth2 with the position detection voltage V1 of the comparator 451 and outputs a pressure detection signal S2 to the A / D driver 31 when a pressure detection voltage V2 exceeding the threshold voltage Vth2 is obtained. . When the press detection signal S <b> 2 forms binarized data, the A / D driver 31 is omitted and output to the CPU 32.

  Similarly, the comparator 45n compares the threshold voltage Vthn with the pressure detection voltage V (n-1) of the comparator 45 (n-1), and a pressure detection voltage Vn exceeding the threshold voltage Vthn is obtained. The pressure detection signal Sn is output to the A / D driver 31. When the pressure detection signal Sn is binarized data, the A / D driver 31 is omitted and the data is output to the CPU 32. Thereby, n-bit position detection and press detection information can be obtained. For example, the first bit is data indicating the pressing position, and the second to nth bits are data indicating the amount of the pressing force F.

  When the input detection unit 45 is arranged on the back surface of the display unit 29 in this manner, it is possible to detect a pressing force F by the operator's finger 30a by reading a change in pressure of the operator's finger 30a and the like. In this example, since the comparison circuit 450 is provided for one operation key element, n-bit position detection and press detection information can be obtained from each comparison circuit 450 even when a large number of operation keys are pressed at the same time. Can do.

Next, an example of input processing in the display input device 129 and the like will be described. 21 and 22 are block diagrams for explaining an operation example (Nos. 1 and 2) of one operation key element. FIG. 23 and FIG. 24 are flowcharts showing the input processing examples (parts 1 and 2).
In this example, the drive power source 505 applies a drive voltage Vo having a magnitude based on the shape presentation command data D input from the CPU 32 between the electrodes 51 and 52. As an example, the threshold voltage Vth1 is set in the comparator 451, the threshold voltage Vth2 is set in the comparator 452, and the threshold voltage Vthn is set in the comparator 45n. In addition, when one element of the operation key is, for example, an operation key image for a volume adjustment level, for example, the input of the volume adjustment level in 0 to 5 levels (volume low → high) is confirmed (set). Take the case as an example.

  With these as input conditions, the position detection signal S1 and the pressure detection signals S2 to Sn are input to the A / D driver 31 in step ST31 of the flowchart shown in FIG. According to the tactile variable sheet portion 180 shown in FIG. 21, the element muscle portion 54 changes to a convex shape when the shape is presented. This shape change is caused by the fact that the driving power source 505 receives the shape presentation command data D from the CPU 32 and applies a drive voltage Vo having a magnitude based on the command data D between the electrode 51 and the electrode 52 so that the element muscle portion 54 This is to change the shape into a convex shape. In this state, since the comparators 451 to 45n do not detect the output voltage V0 exceeding the threshold voltage Vth1, the position detection signal S1 is low level = “0”.

  Further, since the comparator 452 does not detect the output voltage V0 exceeding the threshold voltage Vth2, the pressing detection signal S2 is also at the low level = “0”. Similarly, since the comparator 45n does not detect the output voltage V0 exceeding the threshold voltage Vthn, the press detection signal Sn is also at the low level = “0”.

  And first, the position detection process in step ST32 is performed, and then the pressure detection process is executed in cascade (in series) in steps ST35 to ST46. According to the tactile variable sheet portion 180 shown in FIG. 22, when the shape is presented, the element muscle portion 54 is pressed by the operator's finger 30 a and the like, and the element muscle portion 54 changes to a concave shape. . However, since the operator's finger 30a and the like are pressing on the element muscle portion 54, the current i flowing through the load resistance RL changes. For example, it decreases or increases compared to the current i in a state where the element muscle portion 54 is not pressed. This change in current i appears due to a voltage drop across the load resistor RL.

  According to the position detection process in step ST32, the sliding position of the operator's finger 30a or the like is detected by monitoring the output voltage V0 at the connection point between the load resistor RL and the electrode 51. In this example, in step ST33, the comparator 451 compares the threshold voltage Vth1 with the output voltage V0 and monitors the output voltage V0 exceeding the threshold voltage Vth1.

  At this time, when the comparator 451 detects the output voltage V0 → V1 exceeding the threshold voltage Vth1, for example, the position detection signal S1 (which may be the position detection voltage V1) of high level = “1” is output from the A / D driver. 31 is output. The A / D driver 31 outputs position detection information D1 obtained by analog / digital conversion of the position detection signal S1 to the CPU 32. When the position detection voltage V1 exceeding the threshold voltage Vth1 is detected, the process proceeds to step ST34, and the position detection information D1 is stored in the storage unit 35 as shown in FIG.

  In parallel with the information storage process described above, the pressure detection process is continuously executed in step ST35. According to this pressing detection process, the amount of pressing force F applied to the operator's finger 30a or the like is detected by monitoring the position detection voltage V1 of the comparator 451.

  In this example, in step ST36, the comparator 452 compares the threshold voltage Vth2 with the position detection voltage V1, and monitors the position detection voltage V1 exceeding the threshold voltage Vth2. At this time, when the element muscle portion 54 is further strongly pressed, the comparator 452 detects the position detection voltage V1 → the pressure detection voltage V2 exceeding the threshold voltage Vth2, and therefore, for example, high level = “ 1 ”is output to the A / D driver 31. The position detection voltage V1 and the pressure detection voltage V2 are different in magnitude (V1 ≠ V2). The A / D driver 31 outputs the pressure detection information D2 obtained by analog-digital conversion of the pressure detection signal S2 to the CPU 32.

  When the pressure detection voltage V2 exceeding the threshold voltage Vth2 is detected in the above example, the process proceeds to step ST37, and the input # 1 is determined using the pressure detection information D2 as a trigger. In this example, with the input # 1, for example, the setting of the volume level at the first stage among the volume adjustment levels at 0 to 5 stages is confirmed.

  Further, in parallel with the above-described input # 1 determination process, the pressure detection process is continuously executed in step ST38. According to this pressing detection process, the further amount of the pressing force F of the operator's finger 30a or the like is detected by monitoring the pressing detection voltage V2 of the comparator 452.

  In this example, in step ST39, the comparator 453 compares the threshold voltage Vth3 with the pressure detection voltage V2, and monitors the pressure detection voltage V3 exceeding the threshold voltage Vth3. At this time, if the element muscle portion 54 is further strongly pressed, the comparator 453 detects the pressure detection voltage V2 → V3 exceeding the threshold voltage Vth3. For example, high level = “1”. A pressure detection signal S3 (may be a pressure detection voltage V3) is output to the A / D driver 31. The pressure detection voltage V2 and the pressure detection voltage V3 are different in magnitude (V2 ≠ V3). The A / D driver 31 outputs, to the CPU 32, pressure detection information D3 obtained by analog-digital conversion of the pressure detection signal S3.

  When the pressure detection voltage V3 exceeding the threshold voltage Vth3 is detected in the above example, the process proceeds to step ST40 and the input # 2 is determined using the pressure detection information D3 as a trigger. With the input # 2, the setting of the second volume level among the 0 to 5 volume adjustment levels is confirmed.

  Further, in parallel with the above-described input # 2 determination process, the pressure detection process is continuously executed in step ST41. According to this pressing detection process, the further amount of the pressing force F of the operator's finger 30a or the like is detected by monitoring the pressing detection voltage V3 of the comparator 453.

  In this example, in step ST42, the comparator 454 compares the threshold voltage Vth4 with the pressure detection voltage V3, and monitors the pressure detection voltage V4 exceeding the threshold voltage Vth4. At this time, when the element muscle portion 54 is further strongly pressed, the comparator 454 detects the pressure detection voltage V3 → V4 exceeding the threshold voltage Vth4. For example, high level = “1”. A pressure detection signal S4 (may be a pressure detection voltage V4) is output to the A / D driver 31. The pressure detection voltage V3 and the pressure detection voltage V4 are different in magnitude (V3 ≠ V4). The A / D driver 31 outputs the pressure detection information D4 obtained by analog-digital conversion of the pressure detection signal S4 to the CPU 32.

  When the pressure detection voltage V4 exceeding the threshold voltage Vth4 is detected in the above example, the process proceeds to step ST43, and the input # 3 is determined using the pressure detection information D4 as a trigger. With the input # 3, among the 0 to 5 volume adjustment levels, the setting of the third volume level is confirmed.

  Similarly, the press detection process is continuously executed in step ST44 in parallel with the above-described input # 3 determination process. According to this press detection process, by monitoring the press detection voltage V (n-1) 3 of the comparator 45 (n-1), a further amount of the pressing force F such as the operator's finger 30a is detected. It will be done.

  In this example, in step ST45, the comparator 45n compares the threshold voltage Vthn with the pressure detection voltage V (n-1) and monitors the pressure detection voltage V (n-1) exceeding the threshold voltage Vthn. At this time, if the element muscle portion 54 is further strongly pressed, the comparator 45n detects the pressure detection voltage V (n−1) → Vn exceeding the threshold voltage Vthn. = Pressure detection signal Sn (“Pressure detection voltage Vn”) of “1” may be output to the A / D driver 31. The pressure detection voltage V (n−1) and the pressure detection voltage Vn are different in magnitude (V (n−1) ≠ Vn). The A / D driver 31 outputs, to the CPU 32, pressure detection information Dn obtained by analog-digital conversion of the pressure detection signal Sn.

  When the pressure detection voltage Vn exceeding the threshold voltage Vthn is detected in the above example, the process proceeds to step ST46, and the input # (n-1) is determined using the pressure detection information Dn as a trigger. With the input # (n−1), among the volume adjustment levels of 0 to 5 levels, for example, the setting of the volume level of the 5th level is confirmed. Thereafter, the process proceeds to step ST47, and the CPU 32 determines the end. For example, power off information of the mobile phone 200 is detected. If power-off information is detected, the input process is terminated. When the power-off information is not detected, the process returns to step ST31 and the input process is continued.

  As described above, according to the mobile phone 200 as the third embodiment, the display input device 229 according to the present invention is provided, so that the display unit 29 follows the tendency of the rigidity and the thickness of the display unit 29 to decrease. 29 becomes a pressing force transmission member, and the sliding position of the operator's finger 30a and the amount of the pressing force F can be detected on the back side of the display unit. In the above-described example, the sliding position of the operator's finger 30a and the like can be detected from the position detection information D1, and the amount of the pressing force F at the sliding position can be detected from the pressure detection information D2 to Dn.

  Therefore, compared with a display input method in which a touch panel is provided on the display unit 29, the good optical characteristics of the display unit 29 and the position information of the operator's finger 30a for selecting the input operation image are accurately displayed below the display surface. Can be detected. Thereby, even in the display unit 29 having a structure in which the surface protection panel and the organic EL display element are integrated, the strength of the electronic device such as the mobile phone 200 to which the display unit 29 is applied and the stability of the input detection accuracy can be maintained. It becomes like this.

  In addition, it is possible to omit the resistive film type touch panel and the capacitive type touch panel that constitute the input detection unit 45 in the conventional method from the display unit 29. Since the comparison circuit 450 of the tactile variable sheet unit 180 is arranged below the display screen, the restriction that the comparison circuit 450 is arranged on a circuit board outside the display screen is also relaxed compared to the case where the comparison circuit 450 is arranged on the display screen. The design restriction of the tactile variable sheet portion 180 that forms the input detection unit 45 can be relaxed.

  According to the above-described example, since the drive voltage Vo can be applied in a variable manner between the electrode 51 and the electrode 2 corresponding to each operation key image from the drive power source 505, each operation key of the conductive rubber 182 can be applied. At the position corresponding to the image, each of the conductive rubber 182 sandwiched between the electrode 51 and the electrode 52 serving as a key element is variably adjusted with respect to the operator's finger 30a or the like. It is possible to present a programmable tactile sensation that gives a sense of unevenness by a raised shape, a depressed shape, or an original shape without energization.

  In this way, the concavo-convex shape can be expressed through a tactile sensation on the display screen as compared with the conventional method, and the place to be expressed can be changed depending on the application state of the operation key screen, so the user can It is possible to obtain tactile information (simple unevenness, texture of clothes, etc.) obtained by touching a conventional keyboard or a material having an uneven shape in the existing world from the operation plane of the present invention. The operability can be dramatically improved.

  In this embodiment, an electrode 51 is provided at each terminal portion of the wiring pattern 183 on the base film 181, the electrode 52 is provided on the conductive rubber 182, the electrode 52 is connected to the ground line, and the electrode 51 is connected via the wiring pattern 183. However, the present invention is not limited to this, and a method of grounding the electrode 51 and applying the drive voltage Vo to the electrode 52 may be adopted. In this way, the electrode 51 and the wiring pattern 183 on the base film 181 can be replaced with one ground pattern, and the manufacturing process can be simplified.

  Next, another display input device 329 that can be mounted on the mobile phone 200 will be described. FIG. 25 is a block diagram illustrating a detection circuit example of one element of the operation key of the display input device 329 as the fourth embodiment. In this embodiment, a display input device 329 in which an operator's finger 30a or the like is pushed through the display unit 29 is configured, and in the display input device 329, a conductive rubber 182 (element muscle portion 54 of one element of the operation key) is formed. The tactile non-variable sheet unit 190 constituting the input detection unit 45 is read and the sliding position and the pressing force F are detected.

  In the tactile non-variable sheet portion 190, unlike the third embodiment, the drive voltage Vo is not applied between the electrode 51 and the electrode 52 corresponding to each operation key image from the drive power supply 505 ′. At the position corresponding to each operation key image of the conductive rubber 182, there is no sense of convexity. Of course, when the pressing force F is applied, the concave feeling is generated. In addition, since the thing of the name and code | symbol similar to a 3rd Example has the same function, the description is abbreviate | omitted.

  The display input device 329 shown in FIG. 25 includes a tactile non-variable sheet portion 190, a load resistance RL, a comparison circuit 450, and a drive power source 505 ′ in a configuration example in which a portion corresponding to one element of an operation key is extracted. Composed. The tactile non-variable sheet portion 190 includes a lower electrode 51, an upper electrode 52, and an element muscle portion 54 (which may be a conductive rubber 182).

  In this example, the element muscle portion 54 corresponding to one operation key element is sandwiched between the electrode 51 and the electrode 52. Unlike the third embodiment, the electrode 51 is connected to the ground line GND, and the electrode 52 is connected to the ground line GND via the load resistance RL. According to the detection principle of the display input device 329, paying attention to the power generation (piezoelectric) phenomenon that, when the element muscle portion 54 is pressed, a pressing electromotive force V0 ′ proportional to the pressing force F is generated, the pressing electromotive force V0. 'It is made to detect. The sliding position of the operator's finger 30a and the like and the pressing force F are detected from the magnitude of the pressing electromotive force V0 '.

  A comparison circuit 450 is connected to the connection point between the load resistor RL and the electrode 52 so that the pressing displacement (change) of the element muscle portion 54 pushed in via the display unit 29 is read to detect the pressing force of the operating body. Become. In this example, a pressing electromotive force V 0 ′ corresponding to the pressing force F applied to the element muscle portion 54 is generated in the load resistance RL. The comparator circuit 450 uses n comparators 451, 452,... 45n as in the third embodiment, and the comparators 451, 452,... 45n are connected to the power supply line VCC and the ground line GND, respectively. Is done. The connection point between the load resistor RL and the electrode 52 is connected to the + terminal of the comparator 451.

  The driving power supply 505 'is connected to the negative terminals of the comparators 451, 452,... 45n at each stage of the comparison circuit 450, and the reference voltage VREF is supplied. The position detection comparator 451 is supplied with the position detection threshold voltage Vth1 as the reference voltage VREF, and the pressing force determination threshold comparator 452 is supplied with the pressing force determination threshold voltage Vth2. Similarly, a pressing force determination threshold voltage Vthn is supplied to the pressing force determination threshold comparator 45n.

  The drive power supply 505 'is connected to the power supply line VCC and the ground line GND, and generates and outputs n threshold voltages Vthn. Unlike the third embodiment, the driving power source 505 ′ does not supply a driving voltage to the electrodes 51 and 52 of the conductive rubber 182. The threshold voltages Vth1, Vth2,... Vthn are set by command data D from the CPU 32, for example. The comparator 451 compares the threshold voltage Vth1 with the pressing electromotive force V0 ′ and outputs the position detection signal S1 (position detection voltage V1) when the pressing electromotive force V0 ′ exceeding the threshold voltage Vth1 is obtained. Output to. When the position detection signal S1 forms binarized data, the A / D driver 31 may be omitted and output to the CPU 32 as in the third embodiment.

  The comparator 452 compares the threshold voltage Vth2 with the position detection voltage V1 of the comparator 451 in the same manner as in the third embodiment. When the pressure detection voltage V2 exceeding the threshold voltage Vth2 is obtained, the pressure detection signal S2 is output. The data is output to the A / D driver 31. When the press detection signal S2 forms binarized data, the A / D driver 31 may be omitted and output to the CPU 32.

  Similarly, the comparator 45n compares the threshold voltage Vthn with the pressure detection voltage V (n-1) of the comparator 45 (n-1), and a pressure detection voltage Vn exceeding the threshold voltage Vthn is obtained. The pressure detection signal Sn is output to the A / D driver 31. When the press detection signal Sn forms binary data, the A / D driver 31 may be omitted and output to the CPU 32. Thereby, n-bit position detection and press detection information can be obtained in the same manner as in the third embodiment. For example, the first bit is data indicating the pressing position, and the second to nth bits are data indicating the amount of the pressing force F.

  Next, an example of input processing in the display input device 329 will be described. 26 and 27 are block diagrams for explaining an operation example (Nos. 1 and 2) of one operation key element in the display input device 329. FIG. In this example, the drive power supply 505 'supplies threshold voltages Vth1 to Vthn having magnitudes based on the threshold setting command data D input from the CPU 32 to the comparators 451 to 45n. For example, the threshold voltage Vth1 is set in the comparator 451, the threshold voltage Vth2 is set in the comparator 452, and the threshold voltage Vthn is set in the comparator 45n.

  With these as input processing conditions, according to the tactile non-variable sheet portion 190 shown in FIG. 25, when the power is turned on, no external force is applied to the element muscle portion 54, so that the flat shape is maintained. In this state, the tactile non-variable sheet portion 190 does not generate any pressing electromotive force V0 '. Accordingly, since the comparators 451 to 45n do not detect the pressing electromotive force V0 'exceeding the threshold voltage Vth1, the position detection signal S1 is low level = “0”.

  Further, since the comparator 452 does not detect the pressing electromotive force V0 ′ exceeding the threshold voltage Vth2, the pressing detection signal S2 is also at the low level = “0”. Similarly, since the comparator 45n does not detect the pressing electromotive force V0 'exceeding the threshold voltage Vthn, the pressing detection signal Sn is also at the low level = "0".

  Next, according to the tactile non-variable sheet portion 190 shown in FIG. 26, the element muscle portion 54 is pressed by the operator's finger 30a or the like, and the element muscle portion 54 changes to a concave shape. In this example, since the operator's finger 30a or the like is pressing the element muscle portion 54 with a weak pressing force F, the current i flowing through the load resistance RL changes. For example, it increases compared to the current i in a state where the element muscle portion 54 is not pressed. This change in current i appears due to a voltage drop across the load resistor RL.

  Therefore, by monitoring the pressing electromotive force V0 'at the connection point between the load resistor RL and the electrode 51, the sliding position of the operator's finger 30a and the like can be detected. At this time, the comparator 451 compares the threshold voltage Vth1 with the pressing electromotive force V0 'and monitors the pressing electromotive force V0' exceeding the threshold voltage Vth1. For example, when the comparator 451 detects the pressing electromotive force V0 ′ → V1 exceeding the threshold voltage Vth1, as in the third embodiment, the position detection signal S1 (position detection voltage) of high level = “1”. V1 may be output to the A / D driver 31. The A / D driver 31 outputs position detection information D1 obtained by analog / digital conversion of the position detection signal S1 to the CPU 32.

  Further, according to the tactile non-variable sheet portion 190 shown in FIG. 26, the element muscle portion 54 is further strongly pressed by the operator's finger 30a or the like, and the element muscle portion 54 is further changed into a concave shape. The current i flowing through the load resistor RL increases as compared with the case shown in FIG. This change in current i appears due to a voltage drop across the load resistor RL.

  In this example, the comparator 452 compares the threshold voltage Vth2 with the position detection voltage V1, and monitors the position detection voltage V1 exceeding the threshold voltage Vth2. In the above example, since the element muscle portion 54 is pressed more strongly, the comparator 452 detects the position detection voltage V1 → the pressure detection voltage V2 exceeding the threshold voltage Vth2. Accordingly, a press detection signal S 2 with high level = “1” is output from the comparator 452 to the A / D driver 31. The A / D driver 31 outputs the pressure detection information D2 obtained by analog-digital conversion of the pressure detection signal S2 to the CPU 32.

  When the pressure detection voltage V2 exceeding the threshold voltage Vth2 is detected in the above example, the input # 1 is determined using the pressure detection information D2 as a trigger in the same manner as in the third embodiment. Since the operation is the same as that of the third embodiment, the description thereof is omitted.

  Thus, according to the mobile phone 200 as the fourth embodiment, the display input device 329 having the tactile non-variable sheet portion 190 according to the present invention is provided, so that the rigidity of the display portion 29 is reduced and the thickness is reduced. While following the trend, the display unit 29 becomes a pressing force transmission member, and the sliding position of the operator's finger 30a and the amount of the pressing force F can be detected on the back side of the display unit. In the above-described example, the sliding position of the operator's finger 30a and the like can be detected from the position detection information D1, and the amount of the pressing force F at the sliding position can be detected from the pressure detection information D2 to Dn.

  Therefore, compared with a display input method in which a touch panel is provided on the display unit 29, the good optical characteristics of the display unit 29 and the position information of the operator's finger 30a for selecting the input operation image are accurately displayed below the display surface. Can be detected. As a result, the strength of the electronic device such as the mobile phone 200 on which the display unit 29 having a structure in which the surface protection panel and the organic EL display element are integrated can be maintained and the stability of the input detection accuracy can be maintained.

  In addition, as in the third embodiment, a resistive touch panel and a capacitive touch panel can be omitted from the display unit 29. Since the comparison circuit 450 of the tactile non-variable sheet unit 190 is disposed below the display screen, there is a restriction that the comparison circuit 450 is disposed on a circuit board that is out of the display screen as compared with the case where the comparison circuit 450 is disposed on the display screen. The design constraint of the tactile non-variable sheet unit 190 constituting the input detection unit 45 can be relaxed.

  Also in this example, since the comparison circuit 450 is provided for one operation key element, n-bit position detection and press detection information can be obtained from each comparison circuit 450 even when a large number of operation keys are pressed at the same time. Can do.

  The present invention relates to a digital camera having a tactile input function that presents a tactile sensation when touching an icon screen, a video camera, a mobile phone, a mobile terminal device, a desktop type and a notebook type personal computer, a braille block device, and automatic cash payment It is extremely suitable when applied to electronic equipment such as a machine.

It is a perspective view which shows the structural example of the display input device 100 as a 1st Example. 3 is a cross-sectional view illustrating a configuration example (front) of the display input device 100. FIG. 4 is a perspective view illustrating a configuration example of a pressure-sensitive sensor 101 in an input detection unit 45. FIG. 3 is a block diagram illustrating an example of a detection circuit of the pressure-sensitive sensor 101. FIG. It is a block diagram explaining the example of the input detection in the pressure-sensitive sensor 101 of the operation key 1 element (the 1). It is a block diagram explaining the input detection example (the 2) in the pressure sensor 101 of the operation key 1 element. (A) is a graph showing an example of resistance-pressure characteristics of the pressure-sensitive sensor 101 and the like having a module structure, and (B) and (C) are conceptual diagrams showing the pressed state. FIG. 6 is a cross-sectional view illustrating a configuration example of another pressure-sensitive sensor 102 in the input detection unit 45. FIG. 6 is a cross-sectional view illustrating a configuration example of another pressure-sensitive sensor 103 in the input detection unit 45. FIG. 6 is a cross-sectional view illustrating a configuration example of another pressure-sensitive sensor 104 in the input detection unit 45. FIG. 6 is a cross-sectional view illustrating a configuration example of another pressure-sensitive sensor 105 in the input detection unit 45. FIG. 6 is a cross-sectional view illustrating a configuration example of another pressure-sensitive sensor 106 in the input detection unit 45. It is a perspective view which shows the structural example of the mobile telephone 200 with a tactile sense input function as a 2nd Example provided with the display input device. 3 is a perspective view showing an example of arrangement of the display input device 100. FIG. FIG. 3 is a block diagram showing a configuration example of a control system of mobile phone 200. 10 is a flowchart showing an example of input processing of the display input device 100 in the mobile phone 200. It is a perspective view which shows the structural example of the display input device 129 with a tactile-variable sheet function as a 3rd Example. It is sectional drawing which shows the structural example of the display input device 129. FIG. 12 is a cross-sectional view illustrating a configuration example of a display input device 229 with a tactile variable sheet function applicable to the mobile phone 200. FIG. It is a block diagram which shows the example of a detection circuit of 1 element of operation keys, such as the display input device 129. FIG. It is a block diagram explaining the operation example (the 1) of one operation key element. It is a block diagram explaining the operation example (the 2) of operation key 1 element. It is a flowchart which shows the input processing example (the 1) of the display input device 129 grade | etc.,. It is a flowchart which shows the input processing example (the 2) of display input device 129 grade | etc.,. It is a block diagram which shows the example of a detection circuit of the operation key 1 element of the display input device 329 as a 4th Example. FIG. 25 is a block diagram illustrating an operation example (No. 1) of one operation key element in the display input device 329. FIG. 32 is a block diagram illustrating an operation example (No. 2) of one operation key element in the display input device 329.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 13 ... Microphone, 15 ... Control part, 18 ... Reception part, 22 ... Transmission part, 23 ... Antenna sharing device, 26 ... Image processing part, 29 ... Display part, 31 ... A / D driver, 32 ... CPU (control unit), 33 ... power supply unit, 34 ... camera, 35 ... storage unit, 36a ... speaker, 36b ... actuator Speaker with function, 37... Memory unit, 44... Video & audio processing unit, 45... Input detection unit, 51 and 52. Part, 96 ... antenna, 57, 58 ... wiring pattern group, 100, 129, 229, 329 ... display input device, 190 ... tactile variable sheet part, 190 '... tactile non-variable sheet 110, 210 ... pressure sensitive electrode, 2 0 ... mobile phone (electronic device), 450 ... comparison circuit, 451,452,45N ... comparator, 505, 505 '... driving power source

Claims (9)

A display input device for inputting information by sliding or pressing on a display screen by an operating body,
A display unit having an operation surface and displaying an input operation image;
A planar input detection unit provided on the surface opposite to the operation surface of the display unit;
The input detection unit
A display input device that individually detects a pressing force applied through the display unit. The input detection unit
The display input device according to claim 1, further comprising a pressure-sensitive sensor module structure having a contact point of a pressure-sensitive electrode obtained by coating a conductive electrode member with a pressure-sensitive member. In the input detection unit,
Conductive polymer material for input detection having an electrode of a predetermined size and disposed at a predetermined position of the material for the base material;
The display input device according to claim 1, further comprising a tactile variable sheet function including a power supply unit that supplies a driving voltage to the electrode made of the polymer material. The power supply unit
4. The device according to claim 3, wherein the device has a programmable function of supplying a driving voltage individually or in groups to a plurality of electrodes of the polymer material disposed on the base material. 5. Display input device. In the input detection unit,
Conductive polymer material for input detection having an electrode of a predetermined size and disposed at a predetermined position of the material for the base material;
The display input device according to claim 1, further comprising a tactile non-variable sheet function including a detection circuit that detects a pressing electromotive force from the electrode made of the polymer material. In the display section,
2. The display input device according to claim 1, wherein an organic EL display element or a liquid crystal display element is used. In the liquid crystal display element,
The display input device according to claim 6, wherein an electronic paper in which a plurality of transparent films and sealed liquid crystal layers are superimposed on the light absorption layer is used. An electronic device having a display input means for inputting information by sliding or pressing on the display screen by an operating body,
The display input means includes
A display unit having an operation surface and displaying an input operation image;
A planar input detection unit connected to the surface opposite to the operation surface of the display unit;
The input detection unit
An electronic apparatus that detects a pressing force applied through the display unit. The electronic apparatus according to claim 8, further comprising a vibrating body that vibrates the operation surface of the display unit based on a position detection signal obtained from the input detection unit.

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