TW201214255A - Electrostatic capacitance type input device - Google Patents

Abstract

An input device for use in a portable information terminal and so forth is configured to perform sensuously and reliably a plurality of input operations by finger tips and contribute to the thinning of device. A touch substrate portion 32 is provided above which there are touch electrodes 32a for detecting position on a plan based on variation of electrostatic capacitance while beneath which there is a ground electrode 32b for the above mentioned touch electrodes 32a. A displacement electrode 33a is provide, which is spaced by a space 51 from under the touch substrate portion 32, opposite to the above mentioned ground electrode 32b. The displacement etectrode 33a detects pressing based on the variation of the electrostatic capacitance caused by the shortening of the distance between it and one ground electrode 32b mentioned above. A direction detecting portion I and a pressing detecting portion II are provided to overlap with each other by a common portion in the thickness direction whereby various input operations are possible to be performed.

Description

201214255 VI. Description of the Invention: [Technical Field] The present invention relates to, for example, use in, for example, a mobile phone or a PC (Personal Computer), a PDA (Personal Digital Assistants), a television, a video (video) The silently capacitive input device of an electronic device, etc., more specifically relates to a capacitive input device capable of performing a plurality of input operations by finger or by intuition. [Prior Art] As an input device capable of performing a plurality of input operations, there is disclosed one of the following patent documents. The utility model relates to an input device with a position coordinate detecting device and a pressing force detecting device, wherein the position coordinate detecting device detects a coordinate indicating a position of the position indicating device on the input detecting surface, and the pressing force detecting device detects the input. The position of the detection surface indicates the pressing force of the appliance. Further, the position coordinate detecting device is optical, and the pressing force detecting device is constituted by a capacitive sensor. However, if the detection principles of the two types of detection devices are different, it is sometimes necessary to control these with different 1C. In this case, it is costly and hinders miniaturization. Patent Document 1: Japanese Laid-Open Patent Publication No. 2000-347 807. SUMMARY OF THE INVENTION This problem can be solved by intuitive operation and for input operation.

S 201214255 The same electrostatic capacitance sensor that is reacted to form a detection device of two types of position coordinate detecting device and pressing force detecting device. Therefore, as shown in FIG. 14( a ), the touch electrode 102 provided on the upper surface of the substrate 101 and the first ground electrode 103 provided on the lower surface of the substrate 101 can be considered to constitute the input coordinate detecting device. The position detecting unit 104 is configured such that the displacement detecting unit 105 and the second ground electrode 106 which are separated from each other constitute a pressing detecting unit 107 corresponding to the pressing force detecting device, and the transmission insulating layers 108 are stacked on the upper and lower sides. Further, in Fig. 14, 109 is a key top, 110 is a spring, and 1 1 1 is a substrate. Further, the non-primary portions such as the insulating film are not shown. However, in order to secure the sensitivity of the above-described pressing detecting portion 107, it is necessary to reduce the electrostatic capacitance at the initial stage of the displacement electrode 156 in advance. Therefore, it is necessary to open the distance between the displacement electrode 105 and the first ground electrode 103 to increase the thickness of the insulating layer 108. However, in the configuration of Fig. 14(a), since the insulating layer 108 is thick in addition to the two ground electrodes 1 0 3, 106, it is impossible to make the input device thin. Therefore, as shown in Fig. 14(b), the configuration in which one ground electrode is omitted can be considered. That is, the touch electrode 102 is provided on the upper surface of the substrate 101, and the displacement electrode 105 is disposed under the substrate 1 〇1, and the ground electrode 11 is opposed to the lower side of the displacement electrode 195 via the gap. Composition. According to this configuration, the position detection of the finger can be performed by the touch electrode 102 and the ground electrode 112, and the press detection can be performed by shortening the distance between the displacement electrode 105 and the ground electrode 112. However, in this configuration, since the touch electrode 102 is disposed between the ground electrode 112 and the touch electrode 102, the distance between the displacement electrodes 1〇5 and g is shortened when pressed by a finger, and The electrical distance between the touch electrode 102 and the ground is also shortened. Therefore, the electrostatic capacitance of the position detection is unstable. As a result, the accuracy cannot be obtained and the electrostatic capacitance type of the input operation cannot be enjoyed. Therefore, this invention is mainly concerned with the ability to operate sensibly and reliably, and contributes to the thinning of the device. In order to achieve this, a capacitive input device is a touch substrate portion having a touch electrode for measuring a position on a plane according to an electrostatic capacitance, and a ground electrode for the lower mask electrode; and a displacement The electrode is formed so as to be opposed to the pole and is provided on the touch panel portion with a gap therebetween to detect the pressing according to a change in the distance from the ground electrode. When a finger or the like approaches or contacts the touch electrode, the front electrostatic capacitance changes, and the presence is detected based on the change. Since the touch electrode is spaced apart from the ground electrode at this time, the change in the capacitance 値 is stable. Further, when the touch electrode side is pressed and the distance between the displacement electrodes is shortened, the change between the static electrode 102 of the displacement electrode and the electrode 1 1 1 pole of the displacement electrode 5 is surely changed. Responding to a plurality of input devices, having: a change in the underlying grounding power detected by the touch, wherein the distance of the electrostatically charged touch electrode plane is a change in the ground electrode and the electrical capacitance 201214255, according to This change detected a press. In other words, there is no interference between the position and the detection operation of the pressing, and at least two types of input operations can be performed by the action of a finger or the like. Further, since the input operation of the two types is based on the change in electrostatic capacitance, the control is performed by one IC. The invention may be a capacitive input device in which a spring is urged in a separation direction between the ground electrode and the displacement electrode. In this case, the spring system may be formed by bending a part of the displacement substrate portion including the touch electrode, the ground electrode, and the displacement electrode. By setting the state in which the spring is exerting the elastic force to the initial state, the spring can suppress the shaking when the finger or the like comes into contact, thereby improving the operational feeling. Preferably, a leaf spring composed of an electrically conductive elastic member is assembled between the ground electrode and the displacement electrode, and the leaf spring may be a capacitive input device electrically connected to the ground electrode. In addition to the above-described spring, the leaf spring can improve the operational touch, and can exert the required elastic force for a long period of time, and contributes to thinning. Further, the invention may be a capacitive input device in which a switch for ON/OFF switching by pressing is provided below the displacement electrode. By the switching of the aforementioned switches, other functions such as a decision function can be exerted. Preferably, the opening relationship is constituted by a dome switch, and the electrode for the dome switch is preferably a capacitive input device formed on a lower surface of the displacement substrate portion having the displacement electrode thereon.

S 201214255 Since the electrode system is formed on the lower surface of the displacement substrate portion having the displacement electrode, the dome switch is mounted under the top of the dome shape. Therefore, the number of parts such as the substrate can be suppressed, and the thickness can be reduced. Further, a capacitive input device that is driven when the distance between the ground electrode and the displacement electrode is shortened to notify the notification means for pressing may be used. The above notification means can be constituted by a vibrator for generating vibration or an electronic sound generator for emitting sound. The notification means that the notification is a pressed state, and the user is given a sense of feedback. As described above, according to the present invention, a plurality of input operations can be performed sensibly and surely. Moreover, the thickness of the device can also be reduced. [Embodiment] An embodiment for carrying out the invention will be described using the following drawings. 1 is a schematic view showing a longitudinal cross-sectional structure of a main portion of a capacitive input device 11 (hereinafter referred to as an "input device"), and FIG. 2 is a perspective view showing an appearance of the input device 11 from the upper side. 3 is a perspective view showing the appearance of the view from the lower side thereof. Such an input device 1 1 is used as the input device 1 1 of the portable information terminal 21 shown in Fig. 4, for example. First, the portable information terminal 2 1 will be briefly described. The portable information terminal unit 2 1 shown in Fig. 4 is formed in a thin and rectangular shape, and has a display 22 which is mostly rectangular except for one of the front portions. In addition, the portion of the aforementioned display 22 is not formed in the front side.

S 201214255, the input device 11 and other operation switches 23 are provided. The input device 1 1 is provided with an input portion 12 having a circular shape in a plan view in a state of being exposed on the surface of the portable information terminal 2 1 . Further, the shape of the input portion 12 may be an ellipse, a square or the like, and is not necessarily limited to a circular shape. The input device 11 is configured to perform a plurality of input operations by the user's finger A (see Fig. 1). A plurality of input operations refer to, for example, an operation of moving a cursor of the display 22, and other operations such as page scrolling or determination. Next, the configuration of the input device 11 which can be used to perform such an operation will be described. As shown in Figs. 5 and 6, the input device 11 has a body member 31 composed of one piece of FPC (Flexible Printed Circuits). The main body member 31 has a touch substrate portion 3, a pressing substrate portion 33, and a control substrate portion 34 in this order from the front end side. Further, between the touch panel portion 32 and the pressing substrate portion 33, and between the pressing substrate portion 33 and the control substrate portion 34, bendable cable portions 35, 36 are provided, and from the foregoing The control board portion 34 also continues to be provided with a bendable cable portion 37. The main body member 31 can be constituted by a film printing wiring board or the like in addition to the FPC. Further, the cable portions 35, 36, and 37 are flexible and can be flexibly bent. The touch panel portion 32 and the pressing substrate portion 33 are held by the metal holding member 41 in a state in which the cable portions 35 are folded and folded in a portion where the input portion 12 is formed. 201214255 The touch panel portion 32 is formed in a substantially circular shape in plan view. As shown in FIG. 1 , a plurality of touch electrodes 3 2a for detecting a position on a plane according to a change in electrostatic capacitance are provided on the upper surface. Then, the ground electrode 32b for the touch electrode 32a is provided. The distance between the touch electrodes 32a and the ground electrodes 32b is kept constant. In addition, the touch electrode 32a of the illustrated example is four poles as shown in FIG. 5 and has four touch electrodes 32aa, 32ab, 32ac, 32ad arranged in a circle, but as long as it has two The number of electrodes above, the number and configuration can be set freely. Moreover, although the upper and lower surfaces of the touch panel portion 32 are covered with the insulating film 32c, as shown in FIG. 6, a part of the lower surface of the touch substrate portion 32 is electrically connected to the ground electrode 32b. Ground contact 3 2d. The pressing board portion 33 is formed in a substantially square shape in plan view. Further, as shown in Fig. 1, a displacement electrode 33a is provided on the upper surface, and the displacement electrode 33a faces the ground electrode 32b with a gap 5 1 interposed therebetween, and is used to shorten the distance from the ground electrode 32b. The change in electrostatic capacitance detects a press. Further, on the lower surface of the pressing substrate portion 3, a ring-shaped electrode 62 for a metal dome switch 61 and a circular electrode 63 are arranged in a concentric state. Even if the substrate portion 33 is pressed here, the insulating film 33c is covered at a position required for the upper and lower surfaces. In the control board portion 34, as shown in Figs. 3 and 6, the electronic components necessary for the integrated circuit (IC) 34a or the like are mounted. Such a body member 31 is assembled with a leaf spring 71, and the aforementioned metal dome switch 61, and held in the aforementioned holding member 41, wherein the leaf spring 71

S -10- 201214255 is a spring that pushes the ground electrode 32b and the displacement electrode 33a in a separation direction, and the metal dome switch 61 is disposed below the displacement electric power @33a and is pressed by Deformation to switch the 〇N. 〇FF switch. The leaf spring 71 is formed by piercing a conductive metal plate. The shape is substantially square and the two elastic leg portions 72 are formed by cutting and lifting. The two presser foot portions 72 are formed in parallel and extend in opposite directions. Further, the plate spring 7 1 is not limited to a metal as long as it is composed of an electrically conductive elastic member. The leaf spring 71 is fixed to the underside of the touch substrate portion 32 by a double-sided adhesive tape 81. When it is fixed, the ground contact 32d under the touch substrate portion 32 is brought into contact with the leaf spring 71. The front end of the two pressing leg portions 72 of the touch panel portion 32' is fixed to the upper surface of the pressing substrate portion 33 by a leaf spring 71. Further, the outer periphery of the leaf spring 71 has an appropriate convex portion 73 for positioning the holding member 41 when the main body member 31 is held by the holding member 41. The metal dome switch 61 is composed of two electrodes 62, 63 provided below the pressing substrate portion 33 and a dome-shaped contact 64. Therefore, the dome-shaped contacts 64 are mounted such that the top portion 64a is downward. The top portion 64a abuts on the projection 42 formed on the inner bottom surface of the holding member 41. Further, the 'dome type contact 64 is held by two sheets 65, 66 as shown in Fig. 7, but the sheets of the dome-shaped contacts 64 are covered in the sheets 65, 66. g -11- 201214255 At 65, a portion 65a is formed at a portion corresponding to the top portion 64a of the dome-shaped contact 64. This hole portion 65a is used to thin the input device! The thickness of the whole body. By having such a hole portion 65a, the top portion 64a directly abuts against the projection 42 of the holding member 41. Further, in Fig. 5, 66a is an air release hole for releasing air when the dome-shaped contact 64 is deformed. The holding member 41 is formed by pressing a metal plate so as to have a shape in which the pressing substrate portion 33 and the leaf spring 71 can enter. Further, in the center of the inner bottom surface, the projection 42 is swollen upward. Further, a peripheral wall 43 is vertically provided on the outer periphery of the holding member 41, and a portion of the inner surface of the peripheral coating member 4 is formed to be positionable by pressing an end surface ' of the convex portion 73 of the outer peripheral edge of the leaf spring 7 1 The shape of the leaf spring 71. Further, at the four corner portions of the holding member 41, a bent piece 44» is vertically provided from the peripheral wall 43 by bending the bent piece 44 to the inner side to hold the above-described body member 31 and the like. At this time, the leaf spring 71 is held in such a manner that the elastic force is exerted. The main body member 31 and the like are held by the holding member 41 as shown in Fig. 7. Further, on the touch panel portion 32, a key top 82 having an insulating property is provided. This key top 82 is fixed by a double-sided adhesive tape 83. In addition to the key top 82, other sheets (not shown) may be used, and a frame (not shown) of the machine may be used instead of the key top 82. Fig. 8 is a block diagram showing the configuration of a portable information terminal unit -12-201214255 having an input device constructed as described above. The portable information terminal 2 1 includes an input device u, a switch 23, and a display 22 as described above, and includes a power supply unit 24, a storage unit 25, and the like. Further, these are connected to the control unit 26. In the aforementioned input device! The i is connected to the control unit 26 via the low pass filter 27. The input device 11 has the four touch electrodes 32 && 32 & 13, 32 & configured with the touch electrode 32a and the displacement electrode 33a'. And 323 (1), the touch electrode 32a and the displacement electrode 33a are connected to the integrated circuit 34a, and the integrated circuit 34a is connected to the low-pass filter 27. The integrated circuit 34a is The electrostatic capacitance 値 detected by each of the touch electrodes 3.2aa, 32ab, 32ac, 3 2ad and the electrostatic capacitance 値 detected by the displacement electrode 33a are converted into digital signals. The low pass filter 27 is from the foregoing When the input device 1 1 receives the signal generated by the instantaneous energization, it blocks the signal without detecting it, and transmits only the signal generated by the energization for a long time or more to the control unit 26. Thereby, due to collision or the like The input device 11 is not subjected to an erroneous operation when it is momentarily pressed. The operation switch 23 transmits a signal according to the user's operation to the control unit 26. The power supply unit 24 supplies power to each unit. 22 according to the control signal line 26 of the control unit to display the image. This video tied with the menu images stored in the image memory or the like portion 25 °

S -13- 201214255 The memory unit 25 reads and writes data based on the control signal of the control unit 26. In this data, there are programs such as a menu screen. The control unit 26 has a RAM that stores the ROM of the program and the necessary information for the memory operation. Next, an example of the control operation by the control unit 26 that operates on the input operation of the input device 1 will be described using Figs. 9 and 10 . The input device 11 detects the touch position of the finger A of the user and the press-in load generated by the user based on the change in the electrostatic capacitance 値 of the touch electrode 32a and the displacement electrode 33a. Each of the electrodes 32aa, 32ab, 32ac, 32ad, 33a has its own capacitance 値 change ACa, ACb, ACc, /\Cd, Δ Ce, and the capacitance detected at each of the electrodes 32aa, 32ab, 32ac, 32ad値 is set to Ca, Cb, Cc, and Cd, respectively, and the electrostatic capacitance 値 detected by the displacement electrode 33a is Ce, and the electrostatic capacitance 电极 of the electrodes 32aa, 32ab, 32ac, 32ad at the time of non-touch is set to CaO, respectively. CbO, CcO, and CdO, when the capacitance 値 detected by the displacement electrode 33a is CeO, it can be calculated by the following calculation formula.

Δ Ca = Ca — CaO

Δ Cb = Cb - CbO

△ Cc = Cc — CcO

△ Cd = Cd - CdO

Δ Ce = Ce — CeO, i.e., the control unit 26 performs the data based on the signal input through the integrated circuit 34a and the pre-stored electrostatic capacitance 非 at the time of non-touch.

S -14- 201214255 The above calculation calculates the change in electrostatic capacitance. Then, based on the result, the control unit 26 further calculates the touch positions X, Y and the press-in load Z. The touch position X is the left-right direction (the direction in which the touch electrodes 32ab, 32ac and the touch electrodes 32aa, 32ad face each other), and the touch position Y is the up-and-down direction (the direction in which the touch electrodes 32aa, 32ab face the touch electrodes 32ac, 32ad) ), which can be calculated from the following equations. X = (Δ Ca + Δ Cd) — (Δ Cb + Δ Cc) Y = (Δ Ca + Δ Cb) - (Δ Cc + Δ Cd) Further, the load Z is pressed into the electrostatic capacitance of the displacement electrode 33a. The amount of change ACe is found. That is, Z=z\Ce. The touch position or the press-in depth is detected from the change in the capacitance 値 of each unit calculated in this manner, and the control unit 26 performs necessary control operations in accordance with the program. Specifically, in a state where the user's finger A taps (for example, touches with a force of less than 1 N) on the surface of the key top 82 of the input portion 12 at a level not exceeding the threshold ,, as shown in FIG. 9(a), When moving to the touch electrode 32a from left to right, the change Δ Ca, Δ Cb, Δ Cc, Δ Cd of the electrostatic capacitance 各 of each of the touch electrodes 32aa, 32ab, 32ac, 32ad is as shown in the tenth (a) Changes are shown as shown in the figure. As a result, information on the touch position X, Y can be obtained. From the information, the direction of movement of the finger 判断 is determined, and the control unit 26 performs the cursor 22a from the predetermined reference position on the menu screen displayed on the display 22 as shown in FIG. 9(a) based on the input signal. Move to the control in the direction indicated by finger -15- 201214255. In the same state, as shown in Fig. 9(b), when the movement is performed in a manner that is inclined upward from the left obliquely downward direction, the electrostatic capacitance 値 of each of the touch electrodes 32aa, 32ab, 32ac, 32ad changes ACa , ACb, ACC, △ (: (! ' is a change as shown in Figure 10 (b). This result, information on the touch position x, γ can be obtained. From this information, the direction of movement of the finger , is detected, and the control unit According to the input signal, as shown in FIG. 9(b), the cursor 22a is moved from the predetermined reference position to the oblique direction indicated by the finger A on the menu screen displayed on the display 22 or the like. In the case where the user's finger A is more strongly touched than the above-mentioned situation (for example, touched by a force of 1 N or more), the user quickly moves away, specifically, for example, as the ninth (c) When the page of the book is flipped by the finger A, the contact of the finger A is detected based on the change in the electrostatic capacitance of the touch electrode 32a, and is detected based on the change in the electrostatic capacitance of the displacement electrode 33a. The pressing. Then, in the state where the pressing is detected, According to the change of the electrostatic capacitance of the touch electrode 32a, the moving direction of the finger A is detected. The change of the capacitance 値 of each part Δ Ca, Δ Cb, Δ Cc, Δ Cd, Δ Ce is as in the 10th (c) Next, the control unit 26 follows the change of the electrostatic capacitance AA Ca, Δ(:!?, ACc, Δ0 (!, the contact position X, Y generated by the ACe and the press-in load Z) according to the capacitance 値 of each unit. As shown in FIG. 9(c), the screen is moved on the screen currently displayed on the menu screen or the like of the display 22 described above.

S • 16 - 201214255 Move to the control of a picture below the direction indicated by finger A. When the user's finger A is strongly touched and pushes in, the ON operation based on the deformation of the dome-shaped contact 64 of the metal dome switch 61 is determined by the cursor 22a. A signal such as a selected menu is transmitted to the control unit 26. At this time, the control unit 26 determines the menu selected by the cursor 22a displayed on the menu screen of the display 22 or the like based on the input ON signal, as shown in FIG. 9(d). The appearance changes and the required control actions for each part are performed. At the time of the decision, since the dome-shaped contacts 64 are deformed, a sense of typing can be obtained. Since the input operation can be performed in this manner, in addition to the cursor movement, the 'page flipping or page shifting, decision operation can also be performed by one input device 11. That is, as shown in Fig. 1, the direction detecting unit I, the pressing detecting unit II, and the press-in detecting unit III are provided in the thickness direction, and various input operations can be performed by these. Moreover, the cursor movement, the page flipping, and the determination can be performed with the finger A as if the motion was actually performed. Moreover, since the touch electrode 32a and the ground electrode 32b are formed on the upper surface and the lower surface of the touch substrate portion 32, the distance between them is fixed, so that the electrostatic capacitance of the touch electrode 32a can be made. The change is stable. Further, when the key top 82 is pressed so that the ground electrode 32b of the touch panel portion 32 is close to the displacement electrode 33a, and the distance between the ground electrode 32b and the displacement electrode 33a is shortened, the electrostatic capacitance of the displacement electrode 33a changes. According to this change, the press is detected. This result, though

S -17- 201214255 The operation of detecting only by the touch electrode 32a is an operation such as flipping. In this case, since the distance between the touch electrode 32a and the ground electrode is constant, the detection operation of the position and the pressing can be prevented. To ensure the accuracy and reliability of the operation. Further, since the same electrostatic capacitance is used for detecting such a different operation, the control board portion 34 may be provided with only one circuit 34a. Therefore, the manufacturing cost can be reduced. Further, since the ground electrodes 32b are disposed in common for detecting the different operations, the position or direction of the ground electrode 32b electrode 33a, the direction of the metal dome switch 61, and the above-described direction detecting portion I are improved. The detecting portion II and the pressing portion III can be accommodated in the thickness direction with good efficiency, and the thickness of the input 11 can be thinned. Exposing the top portion 64a of the dome-shaped contact 64 also contributes to the thinning of the opposing portion 11. Further, since the main body member 31 has the leaf spring 71 between the touch panel portion 32 and the pressing portion 33, and the plate spring 71 is held in a state of being held, it is possible to suppress the shaking in the initial state, and the finger A Since it does not shake when touched, it produces a good operation. Moreover, since the leaf spring 71 is made of metal, it can be used in a linear domain to obtain durability. Further, since the leaf spring 71 itself is thinned by the use of the leaf spring 71, and the elastic leg portion 72 is cut as described above, the thickness of the thinning input device 1 1 is available. On page 32b of his page, the joints and displacements of the L-, and Yang Shen's body are used, so the input device is loaded into the loading substrate to push the elastic force. This knot feels. The elastic zone can be opened and lifted to produce a tribute 201214255 Furthermore, since the conductive plate spring 7 is used, the relationship between the pressing force and the distance can be linearly displayed. Therefore, the pressing force and the electrostatic capacitance can be visualized and easily controlled. Further, although the conductive leaf spring 7 1 is used, since the leaf spring 71 is connected to the ground electrode 32b via the ground contact 32d, electric charge is not accumulated in the leaf spring 71, and the detection accuracy can be ensured. Further, since the metal leaf spring 71 is more precise than the FPC, when the main body member 31 is held by the holding member 41, it can be correctly held as compared with the case where the main body member 31 is positioned. Positioning of member 41. Further, a metal dome switch 61 is provided below the displacement substrate portion 33a. As described above, since the other operations can be further performed, the function as the input device 11 can be expanded. Further, since the metal dome switch 6 1 is used, a clear sense of typing can be obtained, and it is suitable for the action of determining the selected matter as described above. When the leaf spring 71 is integrated into the touch panel portion 32 and is turned ON by the deformation of the dome-shaped contact 64 of the metal dome switch 61, the plate spring 71 is terminated as the plate spring 71. The function of the spring becomes a rigid body, which makes it even better. Further, since the metal dome switch 61 is mounted on the top portion 64a of the dome-shaped contact 64 by the pressing of the substrate portion 33, the number of components to be overlapped can be reduced. Therefore, it contributes to further thinning. The following 'descriptions are described for other forms. In this description, for the front

The same or equivalent components are denoted by the same reference numerals, and the detailed description thereof will be omitted. Fig. 11 is a view showing an example in which a part of the FPC constituting the main body member 31 is bent to form a spring between the ground electrode 32b and the displacement electrode 33a. That is, the cable portion 35 between the touch panel portion 32 of the main body member 31 and the pressing substrate portion 33 is bent in a semi-circular arc shape to form the first spring portion 75 having elasticity. Further, a second spring portion 7.6 is formed on the end side of the touch panel portion 32, and the second spring portion 76 is a front end portion 76a that is in contact with the upper surface of the pressing substrate portion 33, and the first spring is The portions 75 are opposed to each other and are bent in a semicircular arc shape. Among the first spring portion 75 and the second spring portion 76, the conductor (not shown) constituting the FPC mainly exerts an elastic pressure. In the input device 11 constructed in this manner, since the other spring member 7 1 is not required, the number of parts can be reduced, and the cost can be reduced. Further, since the first spring portion 75 and the second spring portion 76 are formed at opposite positions, the elastic displacement can be stably performed, that is, the distance between the ground electrode 3 2 b and the displacement electrode 33 a can be shortened. Fig. 12 is an input device 11 for providing a vibrator 91 as a notification means. The notification means is driven when the distance between the ground electrode 32b and the displacement electrode 33a is shortened to notify the pressing. The notification means can be constituted by a vibrator 91 that generates vibration or an electronic sound generator that emits sound. However, since the input operation of the operation of the finger A is performed by feeling, it is preferable to use the vibrator 91. By vibration

S -20- 201214255 The vibration emitted by the device 91 allows the user to actually feel the pressing due to the feedback feeling, and can further operate correctly with the feeling. The vibrator 91 is attached to a suitable portion such as the bottom surface of the holding member 41 as shown in Fig. 12. In addition to the dedicated vibrator 91 in this manner, a vibrator (not shown) provided in the portable information terminal 2 1 (see Fig. 4) can be used. Fig. 13 is a diagram showing an example of a portable information terminal unit 21 having an input device 11 that can detect two or more positions in a linear direction (X direction) on a plane. The touch electrodes 32a are arranged in one direction. In the input device 11 constructed in this manner, as in the above, a plurality of input operations can be performed sensibly and surely. Moreover, the size of the device can also be reduced. In the correspondence between the configuration of the present invention and the configuration of the above aspect, the spring of the present invention corresponds to the leaf spring 71, the first spring portion 75, and the second spring portion 76 having the above-described configuration; the switch and the dome opening relationship correspond to the metal circle. The top switch 61; the notification means corresponds to the vibrator 9 1; the invention is not limited to the above configuration, and other forms may be employed. For example, the operation by the input operation of the input device may be performed in addition to the above-described example, or may be controlled such that the coordinates are specified by the change in the electrostatic capacitance of the touch electrode 32a.

Further, the metal dome switch 61 can also be omitted. Can also use, for example, TACT -21- 201214255

Instead of the metal dome switch 61, various switches such as a switch (registered trademark of ALPS ELECTRIC CO·, LTD) or a membrane switch or a pressure sensitive switch are used. Further, the input may be set to be performed by a finger. [Simplified description of the drawings] Fig. 1 is a schematic view showing a longitudinal sectional structure of a main part of the invention. Fig. 2 is a perspective view showing the appearance of the input device viewed from the upper side. Fig. 3 is a perspective view showing the appearance of the input device viewed from the lower side. Figure 4 is a perspective view of a portable information terminal equipped with an input device. Fig. 5 is an exploded perspective view from the upper side of the input device. Fig. 6 is an exploded perspective view from the lower side of the input device. Fig. 7 is a longitudinal sectional view of an essential part of the input device. Figure 8 is a block diagram showing the construction of a portable information terminal. The ninth (a) to (d) drawings are explanatory views showing an operation example of the input device. 10(a) to (c) are explanatory views showing the detection state of the input device. Fig. 11 is a longitudinal sectional view of an essential part of an input device of another example. Fig. 12 is a perspective view seen from the lower side of the input device of another example. Figure 13 is a perspective view of a portable information terminal having an input device of another example. Figure 14 is a diagram showing the construction of an input device that can be considered from the prior art.

S -22- 201214255 Not intended. [Main component symbol description] 11 Static 12 Input 21 Can 22 Display 22a Tour 2 3 Exercise 2 4 Electric 25 Record 26 Control 27 Low 3 1 32 Touch 32 a (32 aa, 32ab, 32 ac, 32 ad) Touch 32b 32c 32d connected 33 Press 33a 33c 34 control 34a Integrated capacitive input device into the portable information terminal display device switch source part of the Ministry of the pass filter body member control substrate control electrode ground electrode film Ground contact pressure substrate portion shift electrode edge film substrate body circuit (1C)

S -23- 201214255 35, 36, 37 Cable part 4 1 Holding member 42 Projection 43 Peripheral wall 44 Bending piece 5 1 Clearance 61 Metal dome switch 62, 63 Electrode 6 4 Domed contact 6 4a Top 65 piece Material 65a Hole 66 Sheet 6 6a Air release hole 7 1 Plate bow early spring 72 Pressing foot 73 Convex 75 First spring part 76 2nd bow early spring part 76a Front mountain part 8 1 Adhesive belt 82 Key top 83 Double-sided adhesive tape-24- 201214255 91 Vibrator A Finger I direction detecting unit II Pressing detecting unit III Press-in detecting unit 101 Substrate 102 Touch electrode 103 First ground electrode 104 Position detecting unit 105 Displacement electrode 106 Second Ground electrode 107 Press detection portion 108 Insulation layer 109 Key top 1 10 Spring 111 Substrate 112 Ground electrode

S -25-

Claims (1)

201214255 VII. Patent application scope: 1. A capacitive input device comprising: a touch substrate portion having a touch electrode for detecting a position on a plane according to electrostaticization, and the touch electrode The ground electrode is disposed, and the displacement electrode is disposed under the touch substrate portion opposite to the ground electrode for pressing according to a change in electrostatic capacitance generated by shortening a distance between the electrodes. 2. For the capacitive input device of the first application of the patent scope, the grounding electrode and the displacement electrode are spring-loaded. 3. The electrostatic capacitance type input device of claim 1 is a plate spring composed of an elastic member between the ground electrode and the displacement electrode, and the leaf spring is electrically connected to the electrode. 4. The capacitive input device of claim 2, wherein the spring is formed by bending a part of the substrate including the touch electrode and the ground electrode displacement electrode. 5. The electrostatic device according to any one of claims 1 to 4, wherein a switch that is switched by ON.OFF is provided below the displacement electrode. 6. The capacitive input device of claim 5 is constructed by a dome switch, and the change of the capacitor is detected under the ground and separated by the grounding, wherein the front side is separated Wherein the conductive grounding is performed, wherein the front and the capacitive input are pressed, wherein the electrode for the front dome switch -26-201214255 is formed under the displacement substrate portion having the displacement electrode thereon. 7. The capacitive input device of any one of claims 1 to 4, wherein the means for providing a notification when the distance between the ground electrode and the displacement electrode is shortened is notified to notify the pressing. S -27