JP2018060766A - Input apparatus and electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide: an input device which is capable of detecting both a touch operation on each key and a stroke operation on each key and in which, when a stroke operation is detected, the detection of a touch operation by a detection circuit for detecting the touch operation of the key is not executed; and an electronic apparatus.SOLUTION: An input device includes: a key 110 that is displaceable along a direction; a touch detecting circuit 211 that includes an electrostatic capacitance sensor detecting a variation of an electrostatic capacitance caused by a contact with the key 110; and a stroke detecting circuit that includes a stroke detecting electrode 142 and detects an electrical connection between the stroke detecting electrode 142 and a counter electrode 135 that is displaced along the same direction as the key 110 is displaced. The input apparatus switches a detecting status, according to an amount of displacement of the key 110, between a first detecting status in which the touch detecting circuit 211 is used for detection and the stroke detecting circuit 221 is not used for detection, and a second detecting status in which the stroke detecting circuit 221 is used for detection and the touch detecting circuit 211 is not used for detection.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an input device and an electronic device.

  2. Description of the Related Art Conventionally, an electronic apparatus including an input device having a first detection unit that detects a touched key and a second detection unit that detects a key that has been operated to change a state is known ( For example, see Patent Document 1.)

JP 2010-74689 A

  In a conventional input device of an electronic device, naturally, when a key is touched, even when the key is pressed (see FIG. 3C), detection of the touch operation by the first detection unit is performed. Was done. That is, it is necessary to have a configuration capable of detecting a change in capacitance caused by a touch operation on the key even while the key is displaced in the pressing direction. This limits the degree of freedom in designing an input device that can detect both touch operations and press operations on each key.

  The present invention is capable of detecting both a touch operation and a stroke operation on a certain key, and does not detect the touch operation by a detection circuit for detecting the touch operation of the key when detecting the stroke operation of the key. It is an object of the present invention to provide an input device having such a configuration and an electronic apparatus including the same.

An input device according to the present invention includes a key that is displaced in a certain direction,
A first detection circuit including a capacitance detection unit that detects a change in capacitance caused by contact or proximity of the pressing contact body to the key;
A second detection circuit having a first electrode, wherein the second detection circuit detects an electrical connection between the first electrode and the second electrode displaced in the certain direction together with the displacement of the key;
With
A first detection state that is detected by the first detection circuit and not detected by the second detection circuit according to a displacement amount of the key, and a first detection state that is detected by the second detection circuit but not detected by the first detection circuit. Switch the detection state between two detection states,
It is characterized by that.

An electronic device according to the present invention includes a first detection circuit including a key that is displaced in a certain direction, and a capacitance detection unit that detects a change in capacitance caused by the contact or proximity of a pressing contact with the key. An input comprising: a second detection circuit having a first electrode, wherein the second detection circuit detects an electrical connection between the second electrode that is displaced in the certain direction along with the displacement of the key, and the first electrode. A first detection state that is detected by the first detection circuit and not detected by the second detection circuit, and is detected by the second detection circuit and the first detection circuit according to a displacement amount of the key. The input device that switches the detection state between the second detection state that is not detected by the detection circuit;
A control unit that executes at least one function according to a detection result by the first detection circuit and the second detection circuit;
Comprising
It is characterized by that.

  According to the present invention, it is possible to detect both a touch operation and a stroke operation on a certain key, and when the stroke operation of the key is detected, the touch operation is detected by the detection circuit for detecting the touch operation of the key. It is possible to provide an input device having a novel configuration and an electronic apparatus including the same.

1 is a plan view showing an electronic desk calculator (calculator) 10 as an input device according to an embodiment of the present invention. 2A and 2B are diagrams illustrating numeric keys 110 of the input unit 11 of the calculator 10 according to the embodiment of the present invention, in which FIG. 3A is a plan view of the numeric keys 110, and FIG. It is II-II sectional drawing at the time of detection, (C) is II-II sectional drawing at the time of the stroke operation detection which shows the key structure of the numerical key 110. It is a permeation | transmission top view which shows the conductive pattern on the touch detection sheet | seat 120 of the calculator 10 which concerns on embodiment of this invention. It is a block diagram of the calculator 10 which concerns on embodiment of this invention. It is a flowchart which shows the input operation detection process using the calculator 10 which concerns on embodiment of this invention. It is a data structure of the touch input pattern memorize | stored in the memory | storage part 400 of the calculator 10 which concerns on embodiment of this invention. It is a figure which shows an example of user operation using the calculator 10 which concerns on embodiment of this invention. It is a permeation | transmission top view which shows the conductive pattern on the touch detection sheet | seat 120 of 10 A of calculators which concern on embodiment of this invention. It is sectional drawing equivalent to II-II sectional drawing of the calculator 10B which concerns on the 2nd modification of this invention, (A) is a top view of the numerical key 110, (B) shows the key structure of the numerical key 110 It is II-II sectional drawing at the time of touch operation detection.

First, an embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a plan view showing an electronic desk calculator (calculator) 10 as an input device according to an embodiment of the present invention. 2A and 2B are diagrams showing the numeric key 110 of the input unit 11 of the calculator 10 according to the embodiment of the present invention. FIG. 2A is a plan view of the numeric key 110, and FIG. 2B shows the key structure of the numeric key 110. It is II-II sectional drawing at the time of touch operation detection (1st detection state) to show, (C) is II-II sectional drawing at the time of stroke operation detection (2nd detection state) which shows the key structure of numerical key 110. .

  As shown in FIG. 1, the calculator 10 includes an input unit 11, a display unit 12, and a solar cell panel 13. The input unit 11 includes an all clear key [AC], a clear key [C], a positive / negative switching key [+/−], ten keys [0] to [9], and arithmetic keys [+] [−] [×] [÷]. Keys such as [=] are provided. Each key is configured to be displaceable in a certain direction (a direction orthogonal to the paper surface), and is a stroke key capable of detecting the stroke. Nine numeric keys [1] to [9] 110, 110... Of the numeric keys [0] to [9] are arranged in a 3 × 3 matrix. Further, these numeric keys [1] to [9] 110, 110... Function not only as stroke keys but also as touch keys.

The key structure of the input unit 11 includes a numeric key 110, a touch detection sheet 120, a key urging sheet 130, and a substrate 140, as shown in cross sections in FIGS.
The numerical key 110 is made of a conductive material such as a conductive metal. As shown in FIG. 2A, the numerical key 110 surrounds the key top 111 at the center and the four sides of the key top 111 at the peripheral edge in plan view. A character-shaped collar portion 112 is provided. Also, a number specific to the numeric key is printed on the upper surface of the key top 111. In FIG. 2A, the numerical key [9] 110 is shown and described. However, all the numerical keys [1] 110 to [8] 110 are the same except for the contents printed on the key top portion 111. . Hereinafter, in this specification, each of “numeric keys [1] to [9] 110, 110...” May be simply expressed as “numeric key 110”.

The touch detection sheet 120 includes an insulating sheet 121 provided with a plurality of holes 121h, 121h,... Through which the numerical keys 110 are inserted, and a peripheral portion of each hole 121h on the lower surface thereof, and a B-shaped collar. A conductive pattern (see FIG. 3) including at least two touch detection electrodes 122R and 122L formed at positions corresponding to two opposing sides of 112 and wirings 123R and 123L connected to the touch detection electrodes 122R and 122L; Is provided.
The key urging sheet 130 is made of an elastic member such as rubber, and a base 131 that is substantially rectangular in plan view as a whole, and a portion of the substantially rectangular shape that is arranged so as to overlap each numeric key 110 is above ( And a key push-up portion 132 having a raised shape on the key urging sheet 130 on the side where the numerical keys 110 are arranged. The key press portion 132 has a contact portion 133 disposed immediately below the numerical key 110 and an elastic repulsive force that deforms in accordance with a stroke operation of the numerical key 110 and biases the contact portion 133 and the numerical key 110 upward. And a resulting skirt portion 134. A counter electrode 135 is provided on the lower surface of the contact portion 133 (the surface facing the upper surface of the substrate 140).
The substrate 140 includes an insulating base 141 and electrodes, wiring, electronic components, and the like formed on the upper surface of the base 141. In particular, stroke detection is performed on a portion of the upper surface of the base 141 facing each counter electrode 135 of the key biasing sheet 130. An electrode (first electrode) 142 is provided.

With reference to FIGS. 2B and 2C, the key structures at the time of touch operation detection and scroll operation detection will be briefly described.
As shown in FIG. 2B, the touch operation is detected in a state where the stroke operation of the numeric key 110 is not performed. In this state, the key urging sheet 130 retains its original shape by the elastic repulsive force of the material. Accordingly, the upper surface of the contact portion 133 of the key press portion 132 contacts and supports the lower surface of the numerical key 110 (presses the lower surface), and the upper surfaces of the two opposite sides of the collar portion 112 are touched. It is made to contact | abut to 120 touch detection electrodes 122R and 122L. The key top 111 is connected to one of the capacitance detection units included in the touch detection circuit (first detection circuit) 211 (see FIG. 4) via the collar portion 112 and the touch detection electrode 122R, and It is connected to one of the other electrostatic capacity detection parts with which the touch detection circuit 211 is provided via the collar part 112 and the touch detection electrode 122L.

  On the other hand, when the user presses the key top 111 with the fingertip against the elastic repulsive force of the key urging sheet 130, the numerical key 110 is displaced downward along the stroke direction (vertical direction in FIG. 2C). . When the stroke displacement amount of the numerical key 110 by this stroke operation (the amount of movement of the numerical key 110 in the vertical direction in FIGS. 2B and 2C) reaches a certain size, as shown in FIG. The counter electrode 135 of the force sheet 130 and the stroke detection electrode 142 of the substrate 140 come into contact with each other, and the stroke operation is detected. At this time, the collar portion 112 and the touch detection electrodes 122R and 122L are separated from each other, and the electrical connection between the key top 111 and the two capacitance detection portions described above is released.

  FIG. 3 is a transparent plan view showing the touch detection electrode 122 and the wiring 123 in the conductive pattern on the touch detection sheet 120 of the calculator 10 according to the embodiment of the present invention. In FIG. 3, the arrangement of the conductive pattern when viewed from above the calculator 10 (front side of the paper) is shown as a transparent plan view. It is formed on the side where the urging sheet 130 and the substrate 140 are arranged. The touch detection sheet 120 includes a substantially rectangular key hole forming portion in which nine rectangular holes 121h1 to 121h9 are provided in a 3 × 3 matrix, and a narrow width extending from a lower right portion of the key hole forming portion. A leader line forming part to be drawn out and a capacitance detection part forming part (not shown) connected to the tip of the leader line forming part and provided with a capacitance detection part are provided. Hereinafter, in the present specification, when features common to all the holes are described, the holes 121 h may be written without distinguishing individual holes.

  Two touch detection electrodes 122R and 122L are provided on the periphery of each hole 121h so as to surround the hole. The right touch detection electrode 122R in a plan view has an inverted U-shape and is provided so as to be in contact with the entire length of the right side of the hole 121h and the right side portion of the upper and lower sides. It is U-shaped and is provided so as to be in contact with the entire length of the left side of the hole 121h and the left side of the upper and lower sides. The two touch detection electrodes 122R and 122L are separated from each other at portions adjacent to the upper and lower sides of the hole 121h. The right touch detection electrode 122R is connected to one of the capacitance detection units via the wiring 123R, and the left touch detection electrode 122L is connected to one of the other capacitance detection units via the wiring 123L. Has been.

  In addition, three holes 121h arranged in the row direction (left and right direction in the figure), for example, the right touch detection electrodes 122R7, 122R8, and 122R9 of the three holes 121h7, 121h8, and 121h9 in the uppermost row have one wiring. 123R3 is connected in parallel to one third row position detecting capacitance detecting section 212C (see FIG. 4). Similarly, with respect to the middle row, the right touch detection electrodes 122R4, 122R5, 122R6 of the three holes 121h4, 121h5, 121h6 are connected to each other in parallel by a single wiring 123R2 to form a second row position detection static. It is connected to the capacitance detection unit 212B. The same applies to the bottom row, and the right touch detection electrodes 122R1, 122R2, and 122R3 of the three holes 121h1, 121h2, and 121h3 are arranged in parallel with each other by a single wiring 123R1. It is connected to the capacitance detection unit 212A.

  On the other hand, three holes 121h arranged in the column direction (vertical direction in the figure), for example, in the rightmost column, one touch detection electrode 122L9, 122L6, 122L3 on the left side of each of the three holes 121h9, 121h6, 121h3 is one. Are connected in parallel to one third column position detecting capacitance detecting section 213C (see FIG. 4). The middle row and the leftmost row are the same, and the touch detection electrodes 122L8, 122L5, and 122L2 on the left side of the three holes 121h8, 121h5, and 121h2 are arranged in one second row position in parallel with each other by one wiring 123L2. The touch detection electrodes 122L7, 122L4, and 122L1 on the left side of the three holes 121h7, 121h4, and 121h1 are connected to the detection capacitance detection unit 213B, and are connected to each other in parallel by one wiring 123L1. It is connected to the position detection capacitance detection unit 213A.

  These six capacitance detection units, that is, the first to third row position detection capacitance detection units 212A, 212B, and 212C and the first to third column position detection capacitance detection units described above. Reference numerals 213A, 213B, and 213C are capacitance detection units that are different from each other and can independently detect a change in capacitance. Six wirings 123R1, 123R2, 123R3, 123L1, 123L2, and 123L3 are provided in the capacitance detection unit forming portion between the plurality of holes 121h, 121h... In the key hole forming unit and through the lead wire forming unit. Further, each corresponding electrostatic capacity detection unit is routed.

  The operation at the time of touch operation detection in the key structure of the calculator 10 of the present embodiment as described above will be described below. An operation when a touch operation is performed on any one of the plurality of numerical keys 110, 110..., Specifically, the numerical key [9] 110 will be described as an example. Even the key 110 operates in the same manner. In this specification, whether the user's fingertip or the like is in contact with the numeric key 110, or is the user's fingertip or the like close to the numeric key 110 to a position where the capacitance detection unit can detect a change in capacitance? And the state where the collar portion 112 of the numerical key 110 and the touch detection electrodes 122R and 122L of the touch detection sheet 120 are in contact with each other (first detection state) is a state in which the touch operation is performed. And In this state, that is, when the touch operation is detected, the stroke displacement amount of the numerical key 110 is zero. Further, the key structure at this time is as shown in FIG. 3B, and the counter electrode 135 of the key biasing sheet 130 and the stroke detection electrode 142 of the substrate 140 are separated from each other.

  When a touch operation is performed on the key top 111 of the numerical key [9] 110, the key top 111 of the numerical key [9] 110 is connected through the collar 112, the right touch detection electrode 122R, and one wiring 123R3. The change in capacitance is detected by the third row position detection capacitance detection unit. At the same time, a first column position detecting capacitance detecting unit connected to the key top 111 of the numerical key [9] 110 via the collar portion 112, the left touch detecting electrode 122L9, and one wiring 123L3. A change in capacitance is detected.

  As described above, when a touch operation is performed on any one of the plurality of keys 110, 110,..., Electrostatic capacitance is detected by any two capacitance detection units among the six capacitance detection units. When a change in capacitance is detected, it is possible to detect which numeric key 110 is touched based on the combination of the two capacitance detection units in which the change is detected. Specifically, when a change in capacitance is detected by the first row position detection capacitance detection unit and the first column position detection capacitance detection unit, the numeric key [9] 110 is used. The touched key can be identified as a touch operation. Further, when a change in capacitance is detected by the first row position detection capacitance detection unit and the second column position detection capacitance detection unit, a touch operation is performed on the numeric key [8] 110. In the same manner, when a change in capacitance is detected by the third row position detection capacitance detection unit and the third column position detection capacitance detection unit, It can be seen that the touch operation has been performed on the numeric key [1] 110. As described above, in the present embodiment, if there are six wires, it is possible to specify which of the nine numeric keys [1] to [9] 110 is touched.

  Next, an operation when a stroke operation is performed on any one of the plurality of numeric keys 110, specifically, the numeric key [9] 110 will be described as an example. Even the key 110 operates in the same manner. In the present specification, a state where the user's fingertip or the like is in contact with the numerical key 110 and the counter electrode 135 of the key biasing sheet 130 and the stroke detection electrode 142 of the substrate 140 are in contact with each other (second detection state). This is the state in which the stroke operation has been performed. In this state, that is, when the stroke operation is detected, the stroke displacement amount of the numerical key 110 has a certain size. Further, the key structure at this time is as shown in FIG. 3C, and the collar portion 112 of the numerical key 110 and the touch detection electrodes 122R and 122L of the touch detection sheet 120 are separated from each other.

The stroke detection electrode 142 is connected to a stroke detection circuit (second detection circuit) 221 (see FIG. 4) via a wiring (not shown) on the substrate 140. When the stroke operation is performed on the numeric key [9] 110, the stroke detection circuit 221 detects contact between the counter electrode 135 of the key biasing sheet 130 and the stroke detection electrode 142 of the substrate 140.
In addition, when the state between the first detection state at the time of touch detection and the second detection state at the time of stroke operation detection, that is, when the stroke displacement amount of the numerical key 110 is greater than zero and less than the predetermined amount, The flange 112 of the numerical key 110 and the touch detection electrodes 122R and 122L of the touch detection sheet 120 are separated from each other, and the counter electrode 135 of the key biasing sheet 130 and the stroke detection electrode 142 of the substrate 140 are separated from each other. . In this intermediate state, neither a touch operation nor a stroke operation is detected.

  Since the calculator 10 of the present embodiment has the above-described structure, it is possible to detect both a touch operation and a stroke operation on a certain key, and to detect the touch operation of the key when detecting the stroke operation of the key. The detection circuit does not detect a touch operation.

FIG. 4 is a block diagram of the calculator 10 according to the embodiment of the present invention. The calculator 10 includes an input detection unit 200, a control unit (CPU) 300, a storage unit 400, and a display unit 500.
The input detection unit 200 includes the input unit 11, and includes the first row position detection capacitance detection unit 212A, the second row position detection capacitance detection unit 212B, and the third row position detection. A capacitance detection unit 212C, a first column position detection capacitance detection unit 213A, a second column position detection capacitance detection unit 213B, and a third column position detection capacitance detection unit 213C; A touch operation detection unit 210 including a touch detection circuit 211 including a stroke operation detection unit 220 including a stroke detection circuit 221.
The control device 300 receives a signal from each part of the calculator 10, generates a control signal based on the received signal, transmits the control signal to each part, and controls each part by the control signal.
The storage device 400 temporarily stores data displayed on the ROM 410 storing the control command of the calculator 10 and the display unit 500, or temporarily expands the data for calculation processing by the control device 300. RAM 420 to be included.
The display unit 500 displays information such as various calculation results based on the control signal received from the control device 300.

At the time of touch operation detection, one of the first to third row position detection capacitance detection units 212A, 212B, and 212C according to the numerical key 110 that is touched or approached by the user's fingertip. A capacitance change is detected by the capacitance detection unit and one of the first to third column position detection capacitance detection units 213A, 213B, and 213C. The touch detection circuit 211 transmits each corresponding detection signal to the control device 300 depending on whether or not the amount of change in each capacitance is greater than a predetermined threshold.
When a stroke operation is detected, the stroke detection circuit 221 transmits each corresponding detection signal to the control device 300 in accordance with the numeric key 110 on which the stroke operation has been performed.
Based on the detection signal received from the input detection unit 200, the control device 300 performs a numeric key 110 on which an input operation has been performed and the type of operation performed on the numeric key 110 (either a touch operation or a stroke operation). Can be detected.

FIG. 5 is a flowchart showing an input operation detection process using the calculator 10 according to the embodiment of the present invention. The control device 300 determines whether or not a detection signal corresponding to any one of the touch operation and the stroke operation on any key has been received at a constant cycle (for example, every 10 ms). FIG. N shows a data structure of information stored in the RAM for specifying a function corresponding to the touch operation. This information is {9, 5, 1}, {8, 5, 2}, {7, 5, 3 as 1, 2, 3, and the fourth number sequence P _i1 (hereinafter referred to as touch input pattern P _i1 ). } And {4, 5, 6}, and a search flag and a specific function associated with each number sequence. As one of initialization processes when the calculator 10 is turned on, search flags are set to 1 for all touch input patterns, and values of variables i and j, which will be described later, are also rewritten to 1.

  When a detection signal corresponding to an operation other than the touch operation is received (hereinafter referred to as “detection of the operation” for simplicity), that is, when a stroke operation is detected (step S10: Yes), or another operation is detected. In the case (step S10: No, step S15: No, step S85: Yes), the control device 300 rewrites the search flag stored in the RAM to 1 and rewrites the variable i to 1 (steps S90 and S95). Processing corresponding to the detected stroke operation or other operation is executed (step S100). When no operation is detected (step S10: No, step S15: No, step S85: No), the input operation detection process is terminated. Therefore, stroke operation to any key other than the numerical keys [1] to [9] 110, 110..., That is, a key that cannot detect a touch operation (for example, all clear key [AC], clear key [C], etc.). Is detected (step S10: Yes), processing corresponding to the stroke operation is executed by the control device 300 (step S100). Although not shown, in step S100, it is determined whether or not the accepted operation is the same as the previous detection result. If the control device 300 determines that the received operation is the same as the previous detection result, the process is performed as it is. Without ending this input operation detection process.

  When the control device 300 determines that the stroke operation is not detected and the touch operation is detected (step S10: No, step S15: Yes), the numerical key 110 on which the touch operation is performed is specified based on the detection signal ( Step S20). At this time, the same numerical value as the number printed on the key top 111 of the numerical key 110 is acquired as key information. The control device 300 determines whether or not the key information acquired this time and the key information acquired last time are the same (step S22). If they are the same, the input operation detection process is terminated (step 22). : Yes). When the key information acquired this time is different from the key information acquired last time (step S22: No), it is then determined whether the key information is one of several predetermined keys. Do.

Specifically, first obtain the number M _a registered touch input pattern (step S25) and initializes the variable j from (step S30), and the first touch search from the input pattern in the order flag is 1 It is determined whether or not there is (step S32). If the search flag is 1 (step S32: Yes), is the key information acquired in step S20 equal to the i-th numeric value _Pij of the j-th pattern from the top of the touch input patterns stored in the RAM? It is determined whether or not (step S35). If the values match (step S35: Yes), the search flag of the j-th pattern is rewritten to 1 (step S40), and if they do not match (step S35: No), the search flag is set to 0. Rewriting is performed (step S45). If the search flag is not 1 in step S32 (step S32: No), the variable j is incremented (step S33), and the process proceeds to the next touch input pattern search flag determination process (step S32).

The determination process (step S35) and the search flag rewriting process (steps S40 and S45) are repeated (steps S50 and S55: No) for one or more touch input patterns stored in the RAM, and all (Ma) touch inputs are performed. After the process has been completed for the pattern (step S50, S55: Yes), the search flag acquires the number _{M b} of the touch input pattern is 1. Equal number _{M b} 1 (step S65: Yes) Search flag to perform a particular function stored in the RAM in association with the touch input pattern is 1 (step S80). If the number _Mp is not equal to 1, the variable i is incremented (step S75), and the process is terminated.

  To summarize the above input operation detection processing, if the order in which the keys are touched is equal to the previously registered touch input pattern (steps S10: No, S15: Yes, S20, S25, S30, S35: Yes / No, S40, S45, S50, S55: Yes / No, S60, S65: Yes / No, S70, S75), a specific function corresponding to the pattern is executed (step S80). If an operation other than the touch operation, that is, a stroke operation or another operation is performed before the order in which the keys are touched becomes equal to the previously registered touch input pattern (step S10: Yes / No, S15: No, S85). : Yes), after initializing variables for touch input pattern detection (steps S90 and S95), a process associated with the operation is executed (step S100).

  Further description will be given based on a touch input pattern of a specific example stored in the RAM. FIG. 7 is a diagram illustrating an example of a user operation on the input unit 11 of the calculator 10. The first touch input pattern is {9, 5, 1}. This corresponds to an input operation in which the finger is slid in a straight line from the upper right to the lower left in the substantially rectangular area where the numeric keys [1] to [9] 110, 110... Are arranged. Is associated with the function of calculating the percentage by the numerical value displayed on the display unit 12. Similarly, the second touch input pattern is {8, 5, 2}, which corresponds to the input operation of sliding the finger from above to the substantially rectangular area, and this touch input pattern. Is associated with the same function as the [M +] key. The third touch input pattern is {7, 5, 3}, which corresponds to an input operation in which the finger slides from the upper left to the lower right of the substantially rectangular area. Is associated with the same function as the [M-] key. The fourth touch input pattern is {4, 5, 6}, which corresponds to an input operation in which the finger slides from the left to the right in the substantially rectangular area, and the touch input pattern includes The same function as the [MRC] key is associated.

  When a touch operation is detected in the initial state, that is, when all the search flags are 1 and the variable i is 1, the touched numeric keys 110 are [9], [8], [7], and [4]. In any case, the search flag of the touch input pattern corresponding to the numeric key is rewritten to 1. When the touched numeric key 110 is specifically [9], the search flag of the first touch input pattern {9, 5, 1} is rewritten to 1, and the second to fourth touch input patterns The search flag is rewritten to 0. Next, when the touch operation is detected before the stroke operation or other operation is detected, if the touched numeric key 110 is not [5], the first touch input pattern {9, 5, 1} When the search flag is rewritten to 0 and is [5], the value of the search flag remains at 1. Next, if a touch operation on the numeric key [1] 110 is detected before detecting a stroke operation or other operation, the pattern matches the first touch input pattern {9, 5, 1}. The control device 300 executes a function for calculating a percentage, which is a specific function associated with.

  Thereby, in the calculator 10 of this embodiment, a function corresponding to each key can be executed by a touch operation without providing at least four keys [M +], [M−], [MRC], and [%]. Therefore, the input unit 11 and the calculator 10 can be reduced in size. Note that the touch input pattern is not limited to a linear input operation, and “[7] → [4] → [1] → [2] → [3]” (L-shaped input operation) or “ Various patterns such as [7] → [4] → [1] → [2] → [3] → [6] → [9] ”(U-shaped input operation) may be included. By associating the functions of other keys with these touch input patterns, the function corresponding to each key can be executed by a touch operation without providing them.

[First Modification]
FIG. 8 is a transparent plan view showing the touch detection electrode 122 and the wiring 123 in the conductive pattern on the touch detection sheet 120A of the calculator 10A according to the embodiment of the present invention. Constituent elements equivalent to those of the above-described embodiment are given the same or similar reference numerals, and description thereof is omitted for the sake of brevity. In this modification, only one touch detection electrode 122 is provided on the periphery of each hole 121h provided in the touch detection sheet 120A. In addition, one wiring 123 is connected to each touch detection electrode 122, and each wiring 123 is one of nine capacitance detection units (not shown) that can detect a change in capacitance independently of each other. Connected to one. When a touch operation is performed on any one of the key tops 111, 111... Of the numeric keys [1] to [9] 110, 110..., The collar portion 112 of the numeric key 110 and one corresponding touch detection electrode A change in capacitance is detected by any one of the detection capacitance detection units connected to the key top 111 via 122 and one corresponding wiring 123.

  As described above, in the first modified example, the number of electrodes formed in the touch electrode forming portion that is the region where the touch detection electrode 122 is formed in the touch detection sheet 120A and the number of wiring lines to the electrodes are described above. Compared to the embodiment, the number can be reduced. As a result, the calculator 10A according to the present modification can detect both a touch operation and a stroke operation on a certain key, as in the above-described embodiment, and detects the touch operation of the key when detecting the stroke operation of the key. The design when the touch electrode forming part of the touch detection sheet 120A is further miniaturized or the electrode and the lead-out wiring are formed in the touch electrode forming part while having a novel configuration that does not detect the touch operation by the detection circuit. The degree of freedom can be increased.

[Second Modification]
9A and 9B are cross-sectional views corresponding to the II-II cross-sectional view of the calculator 10B according to the second modification of the present invention. FIG. 9A is a plan view of the numerical key 110, and FIG. It is II-II sectional drawing at the time of touch operation detection which shows a structure. Constituent elements equivalent to those of the above-described embodiment are given the same or similar reference numerals, and description thereof is omitted for the sake of brevity. In this modification, the insulating film 113 is formed by coating an insulating resin so as to cover the entire key top 111 of the numerical key 110. The insulating film 113 may be, for example, an oily ink applied to give a desired color to the surface of the key top 111. When a touch operation is performed on any one of the key tops 111, 111... Of the numeric keys [1] to [9] 110, 110..., The collar portion 112 of the numeric key 110 and the corresponding two touch detection electrodes. A change in capacitance is detected by any two detection capacitance detection units connected to the key top 111 via 122R, 122L and the corresponding two wirings 123R3, 123L3. Based on the combination of these two capacitance detection units in which a change has been detected, it is possible to detect which numeric key 110 has been touched. If the thickness of the insulating film 113 is large, the amount of change in capacitance detected by the detection capacitance detection unit is small, and the sensitivity of the touch detection circuit 211 is lowered. Therefore, the detection sensitivity is appropriate while providing a desired color. It is necessary to design as appropriate. Further, the insulating film 113 does not need to give color, and is visually transparent or translucent, or has a desired visual or tactile sensation by giving a feeling of gloss or roughness. An effect may be given.

  As described above, the calculator 10B according to the second modified example can detect both a touch operation and a stroke operation with respect to a certain key, and can detect a touch operation of the key when a stroke operation of the key is detected. It is possible to give a desired color to the key top 111 while having a novel configuration that does not detect the touch operation by the detection circuit for performing the above. The second modified example is not limited to the case where the two touch detection electrodes 122R and 122L are provided at the periphery of each hole 121h of the numerical keys [1] to [9] 110, 110. Needless to say, the present invention can also be applied to the case where only one touch detection electrode 122 is provided at the periphery of each hole 121h of the numerical keys [1] to [9] 110, 110.

  Note that the present invention is not limited to each embodiment, and various modifications can be made without departing from the scope of the invention at the stage of implementation. Furthermore, each embodiment includes inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some constituent elements are deleted from all the constituent elements shown in each embodiment or some constituent elements are combined in different forms, the problems described in the column of the problem to be solved by the invention If the effects described in the column “Effects of the Invention” can be obtained, a configuration in which these constituent requirements are deleted or combined can be extracted as an invention.

  Hereinafter, the invention described in the scope of claims of the present application will be appended.

[Appendix 1]
A key that is displaced in a certain direction,
A first detection circuit including a capacitance detection unit that detects a change in capacitance caused by contact or proximity of the pressing contact body to the key;
A second detection circuit having a first electrode, wherein the second detection circuit detects an electrical connection between the first electrode and the second electrode displaced in the certain direction together with the displacement of the key;
With
A first detection state that is detected by the first detection circuit and not detected by the second detection circuit according to a displacement amount of the key, and a first detection state that is detected by the second detection circuit but not detected by the first detection circuit. 2 The detection state is switched exclusively.
An input device characterized by that.
[Appendix 2]
A first detection state that is detected by the first detection circuit and not detected by the second detection circuit in accordance with a displacement amount of the key, and an intermediate that is not detected by any of the first detection circuit and the second detection circuit. The state and the second detection state detected by the second detection circuit and not detected by the first detection circuit are exclusively switched in that order.
The input device according to Supplementary Note 1, wherein:
[Appendix 3]
The key has a conductive first conductive part that is brought into contact with or close to the input device by the pressing contact body, and a conductive second conductive part that is electrically connected to the first conductive part. With a spear and
The input device further includes:
A panel provided with a hole into which the key is fitted from the back side;
A third conductive part provided on the back surface of the panel, wherein in the first detection state, the heel is electrically connected to the third conductive part so that the pressing contact is made via the third conductive part. A third conductive portion that electrically connects a body and the capacitance detection portion of the first detection circuit;
The input device according to Supplementary Note 1 or Supplementary Note 2, characterized by comprising:
[Appendix 4]
The input device according to attachment 3, wherein
The key further includes an insulating layer provided on a surface of the key,
In a state where the pressing contact body is in contact with the insulating layer, the pressing contact body and the first conductive portion are close to each other via the insulating layer.
The input device according to Supplementary Note 3, wherein
[Appendix 5]
The plurality of keys are arranged in a matrix direction in a plane,
The first detection circuit includes:
A row position detection unit in which two or more conductive portions of two or more pairs of conductive portions of the first two or more keys arranged in the row direction among the plurality of keys are connected in parallel to each other. When,
Among the plurality of keys, a column position detection unit in which two or more conductive portions of two or more pairs of the second two or more keys arranged in the column direction are connected in parallel to each other. And comprising
Based on the row position detected by the row position detection unit and the column position detected by the column position detection unit, the key touched or approached by the pressing contact body is specified among the plurality of keys. To
The input device according to Supplementary Note 3 or Supplementary Note 4, wherein
[Appendix 6]
The panel is provided with a hole into which the key is fitted,
The third conductive portion includes a pair of conductive portions that are provided at the periphery of the hole and are spaced apart from each other.
The capacitance detection unit of the first detection circuit includes a first capacitance detection unit and a second capacitance detection unit that are different from each other,
One conductive part of the pair of conductive parts is connected to the first capacitance detection part, and the other conductive part of the pair of conductive parts is connected to the second capacitance detection part,
In the first detection state, the pressing contact body and the first capacitance detection unit are electrically connected to each other through the one conductive unit by connecting the collar to the pair of conductive units. , The pressing contact body and the second capacitance detection unit are electrically connected via the other conductive part,
The input device according to appendix 5, characterized in that:
[Appendix 7]
The plurality of keys are arranged in a matrix direction in a plane,
The first detection circuit includes:
Each of the third conductive portions of the plurality of keys includes a plurality of position detection units connected one to one,
Based on the position detected by the position detection unit, the key that is in contact with or close to the pressing contact body among the plurality of keys is specified.
The input device according to Supplementary Note 3 or Supplementary Note 4, wherein
[Appendix 8]
The panel is provided with a plurality of holes into which the plurality of keys are fitted,
The third conductive portion includes a conductive portion provided at each peripheral edge of the plurality of holes.
The capacitance detection unit of the first detection circuit includes a first capacitance detection unit and a second capacitance detection unit that are different from each other,
One conductive part of the third conductive part corresponding to one key among the plurality of keys is connected to the first capacitance detection part, and the one corresponding to another key among the plurality of keys. The other conductive part of the third conductive part is connected to the second capacitance detection part,
When the one key is in the first detection state, the heel is connected to the one conductive part, so that the pressing contact body and the first capacitance detection part are connected via the one conductive part. Are electrically connected and the other key is in the first detection state, the hook is connected to the other conductive portion, so that the second contact portion and the second contact portion are connected to the second contact portion. Is electrically connected to the capacitance detection unit of
The input device according to appendix 7, which is characterized in that.
[Appendix 9]
A control unit that executes at least one function according to a detection result of the first detection circuit and the second detection circuit;
A plurality of the keys are provided,
The controller is
When the first detection circuit detects that the pressing contact body is in contact with or close to any one of the keys, the first function is executed.
When the second detection circuit detects that the first electrode and the second electrode of the key are electrically connected, a second function different from the first function is executed,
When the first detection circuit detects that the pressing contact body continuously contacts or approaches two or more of the plurality of keys, both the first function and the second function Perform a different third function,
The input device according to any one of Supplementary Note 1 to Supplementary Note 9, wherein
[Appendix 10]
A first detection circuit having a key that is displaced in a certain direction, a capacitance detection unit that detects a change in capacitance caused by the contact or proximity of the pressing contact with the key, and a second detection having a first electrode A second detection circuit for detecting an electrical connection between the first electrode and a second electrode that is displaced in the certain direction along with the displacement of the key, and according to the amount of displacement of the key, The first detection state detected by the first detection circuit and not detected by the second detection circuit and the second detection state detected by the second detection circuit but not detected by the first detection circuit are exclusively switched. The input device;
A control unit that executes at least one function according to a detection result by the first detection circuit and the second detection circuit;
Comprising
An electronic device characterized by that.

10 Calculator 11 Input section 110 Numeric keys (keys)
111 Key Top 112 Hook 113 Insulating Film 120 Touch Detection Sheet 121 Insulating Sheet 121h1-121h9 Holes 122, 122R, 122L Touch Detection Electrode (Third Conductive Part)
123, 123L1, 123L2, 123L3, 123R1, 123R2, 123R3 Wiring 130 Key urging sheet 131 Base portion 132 Key push-up portion 133 Contact portion 134 Skirt portion 135 Counter electrode (second electrode)
140 Substrate 141 Base 142 Stroke detection electrode (first electrode)
211 Touch detection circuit (first detection circuit)
300 Control device (control unit)

Claims (10)

A key that is displaced in a certain direction,
A first detection circuit including a capacitance detection unit that detects a change in capacitance caused by contact or proximity of the pressing contact body to the key;
A second detection circuit having a first electrode, wherein the second detection circuit detects an electrical connection between the first electrode and the second electrode displaced in the certain direction together with the displacement of the key;
With
A first detection state that is detected by the first detection circuit and not detected by the second detection circuit according to a displacement amount of the key, and a first detection state that is detected by the second detection circuit but not detected by the first detection circuit. 2 The detection state is switched exclusively.
An input device characterized by that. A first detection state that is detected by the first detection circuit and not detected by the second detection circuit in accordance with a displacement amount of the key, and an intermediate that is not detected by any of the first detection circuit and the second detection circuit. The state and the second detection state detected by the second detection circuit and not detected by the first detection circuit are exclusively switched in that order.
The input device according to claim 1. The key has a conductive first conductive part that is brought into contact with or close to the input device by the pressing contact body, and a conductive second conductive part that is electrically connected to the first conductive part. With a spear and
The input device further includes:
A panel provided with a hole into which the key is fitted from the back side;
A third conductive part provided on the back surface of the panel, wherein in the first detection state, the heel is electrically connected to the third conductive part so that the pressing contact is made via the third conductive part. A third conductive portion that electrically connects a body and the capacitance detection portion of the first detection circuit;
The input device according to claim 1, further comprising: The input device according to claim 3,
The key further includes an insulating layer provided on a surface of the key,
In a state where the pressing contact body is in contact with the insulating layer, the pressing contact body and the first conductive portion are close to each other via the insulating layer.
The input device according to claim 3. The plurality of keys are arranged in a matrix direction in a plane,
The first detection circuit includes:
A row position detection unit in which two or more conductive portions of two or more pairs of conductive portions of the first two or more keys arranged in the row direction among the plurality of keys are connected in parallel to each other. When,
Among the plurality of keys, a column position detection unit in which two or more conductive portions of two or more pairs of the second two or more keys arranged in the column direction are connected in parallel to each other. And comprising
Based on the row position detected by the row position detection unit and the column position detected by the column position detection unit, the key touched or approached by the pressing contact body is specified among the plurality of keys. To
The input device according to claim 3, wherein the input device is an input device. The panel is provided with a hole into which the key is fitted,
The third conductive portion includes a pair of conductive portions that are provided at the periphery of the hole and are spaced apart from each other.
The capacitance detection unit of the first detection circuit includes a first capacitance detection unit and a second capacitance detection unit that are different from each other,
One conductive part of the pair of conductive parts is connected to the first capacitance detection part, and the other conductive part of the pair of conductive parts is connected to the second capacitance detection part,
In the first detection state, the pressing contact body and the first capacitance detection unit are electrically connected to each other through the one conductive unit by connecting the collar to the pair of conductive units. , The pressing contact body and the second capacitance detection unit are electrically connected via the other conductive part,
The input device according to claim 5. The plurality of keys are arranged in a matrix direction in a plane,
The first detection circuit includes:
Each of the third conductive portions of the plurality of keys includes a plurality of position detection units connected one to one,
Based on the position detected by the position detection unit, the key that is in contact with or close to the pressing contact body among the plurality of keys is specified.
The input device according to claim 3, wherein the input device is an input device. The panel is provided with a plurality of holes into which the plurality of keys are fitted,
The third conductive portion includes a conductive portion provided at each peripheral edge of the plurality of holes.
The capacitance detection unit of the first detection circuit includes a first capacitance detection unit and a second capacitance detection unit that are different from each other,
One conductive part of the third conductive part corresponding to one key among the plurality of keys is connected to the first capacitance detection part, and the one corresponding to another key among the plurality of keys. The other conductive part of the third conductive part is connected to the second capacitance detection part,
When the one key is in the first detection state, the heel is connected to the one conductive part, so that the pressing contact body and the first capacitance detection part are connected via the one conductive part. Are electrically connected and the other key is in the first detection state, the hook is connected to the other conductive portion, so that the second contact portion and the second contact portion are connected to the second contact portion. Is electrically connected to the capacitance detection unit of
The input device according to claim 7. A control unit that executes at least one function according to a detection result of the first detection circuit and the second detection circuit;
A plurality of the keys are provided,
The controller is
When the first detection circuit detects that the pressing contact body is in contact with or close to any one of the keys, the first function is executed.
When the second detection circuit detects that the first electrode and the second electrode of the key are electrically connected, a second function different from the first function is executed,
When the first detection circuit detects that the pressing contact body continuously contacts or approaches two or more of the plurality of keys, both the first function and the second function Perform a different third function,
The input device according to any one of claims 1 to 9, wherein: A first detection circuit having a key that is displaced in a certain direction, a capacitance detection unit that detects a change in capacitance caused by the contact or proximity of the pressing contact with the key, and a second detection having a first electrode A second detection circuit for detecting an electrical connection between the first electrode and a second electrode that is displaced in the certain direction along with the displacement of the key, and according to the amount of displacement of the key, The first detection state detected by the first detection circuit and not detected by the second detection circuit and the second detection state detected by the second detection circuit but not detected by the first detection circuit are exclusively switched. The input device;
A control unit that executes at least one function according to a detection result by the first detection circuit and the second detection circuit;
Comprising
An electronic device characterized by that.