JP6610813B1 - Auxiliary input device for capacitive touch panel - Google Patents

Abstract

An auxiliary input device for a capacitive touch panel capable of detecting an input operation of a knob of an auxiliary input tool by identifying the input operation body in a short time with a capacitive touch panel. An input operation electrode having a first dividing electrode and a second dividing electrode separated by a slit detectable by a capacitive touch panel is attached to an insulating knob, and the center of the first and second dividing electrodes is attached. The distance between the positions is set to a distance L1 that is sufficiently shorter than the distance between the center positions of two or more input operation bodies that multi-touch the detection surface. At the position of the detection surface of the capacitive touch panel that faces each central position of the first and second dividing electrodes, the capacitance changes the most compared to the surrounding area, so compared to the surrounding positions. The center positions of the first and second split electrodes are detected from the position where the capacitance changes most, and the distance D1 between them is sufficiently larger than the distance between the center positions of two or more input operation bodies to be multi-touched. When the input operation is short, the input operation by the knob identified as the input operation body is detected. [Selection] Figure 1

Description

  The present invention relates to an auxiliary input device for a capacitive touch panel that is arranged on a detection surface of a capacitive touch panel and performs an input operation to the capacitive touch panel by moving a knob along the detection surface. More specifically, the present invention relates to an auxiliary input device for a capacitive touch panel that discriminates an input operation using an input operation body such as a finger and an input operation using a knob.

  Capacitive touch panel pays attention to increase in stray capacitance (capacitance between input operation body and detection electrode) of detection electrode approached by input operation body such as stylus pen, finger, etc. The input position on the detection surface of the capacitive touch panel is detected from the detection electrode wiring position. For example, a large number of X-side detection electrodes and Y-side detection electrodes are insulated so as to cross each other. The input position (x, y) on the detection surface of the input operation body is detected from the arrangement position of the X-side detection electrode and the Y-side detection electrode whose capacitance changes near the input operation body. ing.

  On the other hand, an input operation body such as a stylus pen or a finger cannot perform a rotation input operation around a specific rotation axis, and in order to obtain an input operability that cannot be obtained with an input operation body, Instead, Patent Documents 1 to 4 disclose an input operation for moving an auxiliary input tool along a detection surface of a capacitive touch panel.

  When an auxiliary input tool is used, both the input operation by the input operation body and the input operation by the auxiliary input tool can be detected on the capacitive touch panel. Even if a part approaches the detection surface of the capacitive touch panel, it may be erroneously detected as an input operation by the input operation body, and it is necessary to determine both input operations. Therefore, the auxiliary input tool described in Patent Document 1 has a structure in which a specific detection pattern having a vertex at three or more touch positions on the capacitive touch panel is detected as the auxiliary input tool, and input by an input operation body. The operation and the input operation by the auxiliary input tool can be discriminated.

  Hereinafter, the auxiliary input device 100 of this conventional capacitive touch panel will be described with reference to FIGS. 14 and 15. FIG. 14A is a perspective view of the operation device 100 corresponding to the auxiliary input tool, and a cylindrical bowl-shaped case 101 composed of a conductive side plate portion 101a and an insulating resin bottom plate portion 101b, and the bottom plate portion 101b. It is comprised from the three conductor support | pillars 102a, 102b, and 102c erected upright. Since the three conductor columns 102a, 102b, 102c are attached to the bottom plate portion 101b at 120 degree intervals on a concentric circle around the center of the circular bottom plate portion 101b, as shown in FIG. The intervals between the conductor struts 102a, 102b, 102c are equal, and an equilateral triangle having the apex at the position of each body strut 102a, 102b, 102c is formed.

  In the operation device 100, the bottom plate portion 101b is disposed on a detection surface 110a of a capacitive touch panel (hereinafter simply referred to as touch panel) 110, and an input operation to the touch panel 110 is performed by moving and operating on the detection surface 110a. As shown in FIG. 14C, the bottom plate portion 101b of the case 101 interposed between the detection surface 110a and the conductor post 102 can detect a change in capacitance due to the conductor post 102 on the touch panel 110. The structure is thin enough.

  Since the operator's potential is generally a ground potential, when the operator's finger touches the three conductor columns 102a, 102b, 102c when performing an input operation with the operation device 100, the conductor columns 102a, As shown in FIG. 15, the touch panel 110 changes the positions of the conductor columns 102a, 102b, and 102c on the detection surface 110a to the touch points T1, T2, and 102b, 102c, respectively. Detect as T3. Further, when an operator performs an input operation with a finger (input operation body) directly approaching the detection surface 110a without using the operation device 100, the capacitance at each position of the two fingers similarly changes. Therefore, the touch panel 110 detects the positions where the two fingers of the detection surface 110a approach as touch points T4 and T5.

  In the input operation using the operation device 100, the shapes having the three touch points T1, T2, and T3 detected by the touch panel 110 as vertices are equilateral triangles unique to the operation device 100. When the distances between the points T1, T2, and T3 are equal, the positions of the touch points T1, T2, and T3 are detected as the input position of the operation device 100. On the other hand, the touch point T4 and the touch point T5 whose distances from at least two other touch points T are not the same distance cannot be the vertices of an equilateral triangle. Detect as position. Thereby, the distance between all the touch points T1, T2, T3, T4, and T5 detected by the touch panel 110 is compared, the input operation by the finger (input operation body) is determined, and the input operation by the operation device 100 is performed. Detected.

Japanese Patent No. 6391893 Japanese Patent No. 5705767 Republished patent WO2016 / 166793 Japanese Patent No. 6403921

  As described above, the auxiliary input device 100 of the conventional capacitive touch panel detects an input operation of the auxiliary input device 100 by detecting three or more touch points T that are vertices of a shape unique to the auxiliary input device 100. Therefore, the distance between the touch points T of at least three or more touch positions detected by the capacitive touch panel 110 is calculated, and the calculated distance is compared with each other to discriminate from the input operation body such as a finger. There is a problem that detection of the input position of the auxiliary input tool 100 is delayed.

  In particular, when detecting the input operation of the auxiliary input tool 100 from the movement trajectory on the detection surface 110a of the auxiliary input tool 100, the comparison of the distances between all the touch points T described above, Since it is necessary to calculate the input position of the auxiliary input tool 100 from the determined positions of the three touch points T1, T2, and T3, and the detection time of one cycle for detecting the input position becomes long, detection is performed for each cycle. There is a problem that the detection accuracy of the input position of the auxiliary input tool 100 becomes rough.

  If the new movement position where the input operation of the auxiliary input tool 100 is input is predicted to be close to the position of the detected touch point, the comparison of the distance between the touch points T can be omitted and the input position detection time can be shortened. When a touch point by an input operating body other than the auxiliary input tool 100 is detected in the vicinity of this, it is mistaken as a touch point of the auxiliary input tool 100 and erroneously detected as an input operation of the auxiliary input tool 100.

  Further, in order to distinguish the input operation of the auxiliary input tool 100 from the input operation of an input operation body such as a finger, the operator touches the auxiliary input tool 100 and at least three conductor columns arranged on the bottom surface side. Since it is necessary to attach 102a, 102b, 102c to the case 101, the entire structure of the auxiliary input tool 100 is complicated.

  The present invention has been made in consideration of such conventional problems, and can be identified as an input operation body in a short time without comparing the distance between touch points T detected by a capacitive touch panel. It is an object of the present invention to provide an auxiliary input device for a capacitive touch panel that can detect an input operation of the auxiliary input device.

  It is another object of the present invention to provide an auxiliary input device for a capacitive touch panel that can be distinguished from an input operating body in a capacitive touch panel with a simple configuration by simply attaching an input operation electrode consisting of a set of split electrodes. To do.

In order to achieve the above-mentioned object, an auxiliary input device for a capacitive touch panel according to claim 1 is an insulating knob movably disposed on a detection surface of the capacitive touch panel, and an input operation attached to the knob. The capacitance touch panel includes an electrode, and the capacitance changes at the position of the detection surface facing the input operation electrode. Therefore, the capacitance touch panel detects an input operation of a knob that moves on the detection surface. Auxiliary input device,
The input operation electrode has a first dividing electrode and a second dividing electrode separated by a slit that can be detected by a capacitive touch panel, and the distance between the center positions of the first dividing electrode and the second dividing electrode is detected. It is characterized by being sufficiently shorter than the distance between the center positions of two or more input operation bodies that multi-touch the surface.

  At the position of the detection surface facing each central position of the first and second split electrodes, the capacitance changes most greatly compared to the periphery thereof, and at the position of the detection surface facing the slit, the electrostatic capacitance is relatively static. Since the capacitance does not change, when the capacitive touch panel detects a slit from a position on the detection surface where the amount of change in capacitance is small, it is quieter on both sides of the position of the detection surface than the surroundings. The position on the detection surface where the capacitance changes the most represents each center position of the first and second dividing electrodes.

  When the detected distance between the center positions of the first and second split electrodes is sufficiently shorter than the distance between the center positions of the multi-touch input operation body, the capacitive touch panel The input operation of the knob of the auxiliary input tool determined to be a body is detected.

  The auxiliary input device of the capacitive touch panel according to claim 2 has a plurality of dividing electrodes separated by one or more slits that can be detected by the capacitive touch panel, and each auxiliary input device has a plurality of auxiliary electrodes. The number of slits formed in the input operation electrode of the input tool is different from each other.

  The capacitive touch panel can identify the auxiliary input tool from the number of slits detected based on the position where the amount of change in capacitance is small at the position on the detection surface facing the input operation electrode.

  The auxiliary input device of the capacitive touch panel according to claim 3 has a combination of a projected area or a projected shape obtained by projecting the first and second divided electrodes of each auxiliary input device to a detection surface. It is different from each other.

  Since the capacitance changes at the position of the detection surface where the first dividing electrode and the second dividing electrode face each other, the capacitance type touch panel has the first dividing electrode from the position on the detection surface where the capacitance changes. And the projected area or projected shape of the second split electrode projected onto the detection surface, respectively, and the auxiliary input tool is obtained from the combination of the area or shape facing the detection surface of the first split electrode and the second split electrode. Can be identified.

  The auxiliary input device of the capacitive touch panel according to claim 4 is characterized in that the widths of the slits separating the first and second divided electrodes of the auxiliary input devices of the plurality of auxiliary input devices are different from each other.

  Since the capacitance does not change at the position of the detection surface facing the slit separating the first and second dividing electrodes from the surrounding position, the capacitance touch panel has a relative capacitance. The projection shape obtained by projecting the slit onto the detection surface can be detected from the area on the detection surface that does not change to, and the auxiliary input tool can be specified from the width of the projection shape of the slit.

  The auxiliary input device of the capacitive touch panel according to claim 5 is characterized in that a touch electrode electrically connected to the input operation electrode is attached to the outer peripheral surface of the knob.

  The operator's finger touching the touch electrode while touching the knob touches the touch electrode, and the input operation electrode is at the operator's potential, so the capacitance changes more greatly at the position of the detection surface facing the input operation electrode. The position of the input operation electrode on the surface can be accurately detected.

  The auxiliary input device of the capacitive touch panel according to claim 6 further includes one or more knob position electrodes attached to the knob, and one or more input operation electrodes of each auxiliary input device of the plurality of auxiliary input devices. The combination of relative attachment positions attached to the knobs of the knob position electrodes is different from each other.

  Since the capacitance changes at a position on the detection surface where the input operation electrode and one or more knob position electrodes face each other, the capacitance type touch panel represents a region on the detection surface where these electrodes face each other. An electrode facing area is detected, and an auxiliary input tool is specified from a combination of relative positions on the detection surface of each electrode facing area.

  The auxiliary input device of the capacitive touch panel according to claim 7, wherein one or more knob position electrodes are arranged from a relative mounting position of the input operation electrode and one or more knob position electrodes, and the capacitive touch panel is a knob. It is attached to the position of the knob which makes it possible to detect the center position of the.

  The capacitive touch panel can detect the center position of the knob from the position of each electrode facing area that represents the area on the detection surface where the detected input operation electrode and one or more knob position electrodes face each other.

  The auxiliary input device of the capacitive touch panel according to claim 8 is characterized in that a touch electrode electrically connected to the knob position electrode is attached to the outer peripheral surface of the knob.

  The operator's finger touching the knob and touching the knob touches the touch electrode, and the knob position electrode is at the operator's potential, so the capacitance changes more greatly at the position of the detection surface facing the knob position electrode. The position of the knob position electrode on the surface can be accurately detected.

  The auxiliary input device of the capacitive touch panel according to claim 9 is characterized in that the knob has a cylindrical shape in which the display of the display means stacked on the capacitive touch panel can be visually observed.

  The display of the display means can be visually observed from the inside of the cylindrical knob that is moved and operated on the detection surface of the capacitive touch panel.

  The auxiliary input device of the capacitive touch panel according to claim 10 further includes a holder that is disposed on the detection surface of the capacitive touch panel and that accommodates the knob so as to be rotatable around a rotation axis orthogonal to the detection surface. It is characterized by that.

  The knob is guided by the holder so as to be rotatable around a rotation axis orthogonal to the detection surface.

  The auxiliary input device for a capacitive touch panel according to an eleventh aspect is characterized in that two or more holder position electrodes that enable detection of the rotation axis of the knob by the capacitive touch panel are attached to the holder.

  The capacitive touch panel can detect the position of the rotation axis of the knob that is rotatably guided from the position of each electrode facing area representing the area on the detection surface of two or more holder position electrodes.

  The auxiliary input device for a capacitive touch panel according to a twelfth aspect is characterized in that a moderation mechanism is provided between the knob and the holder for positioning the knob that rotates about the rotation axis at every predetermined rotation angle.

  The knob is temporarily fixed in the rotation direction at every predetermined rotation angle by the moderation mechanism.

  According to the first aspect of the present invention, the distance between the center positions of the first and second split electrodes detected by the capacitive touch panel is between the center positions of two or more input operation bodies to be multi-touched. This is sufficiently shorter than the distance between the first split electrode and the second splitting electrode without comparing the distances between the three or more touch points detected by the capacitive touch panel as positions where the electrodes face each other from the change in capacitance. The input operation of the knob of the auxiliary input tool can be detected from the distance between the center positions of the split electrodes, as determined by the input operation of the input operation body. As a result, the input position of the auxiliary input tool can be detected at high speed.

  In addition, it is easy to simply attach the input detection electrode to the knob with the first and second divided electrodes separated by a slit that is sufficiently narrower than the interval between the center positions of two or more input operation bodies to be multi-touched. With the configuration, the input operation of the auxiliary input tool can be determined on the capacitive touch panel without changing the structure of the existing capacitive touch panel.

  According to the invention of claim 2, the capacitance type touch panel can determine which auxiliary input tool is used for the input operation only by changing the number of slits formed in the input operation electrode for each auxiliary input tool. .

  According to the third aspect of the present invention, the capacitance touch panel can be changed only by changing the combination of the projected area or the projected shape of the first and second divided electrodes projected onto the detection surface for each auxiliary input tool. It is possible to determine whether the input operation is performed with the auxiliary input tool.

  According to the invention of claim 4, the capacitance type touch panel is an input operation by any auxiliary input device only by changing the width of the slit separating the first divided electrode and the second divided electrode for each auxiliary input device. Can be determined.

  According to the fifth aspect of the present invention, the input operation electrode can be naturally set to the ground potential by the operator's input operation, the capacitance is greatly changed at the position of the detection surface of the input operation electrode, and the input operation electrode The position can be detected with high accuracy.

  According to the sixth aspect of the present invention, the capacitance type touch panel can be obtained by simply changing the combination of the relative attachment positions of the input operation electrode and one or more knob position electrodes for each auxiliary input tool attached to the knob. It is possible to determine whether the input operation is performed with the auxiliary input tool.

  According to the seventh aspect of the present invention, the capacitive touch panel is configured to perform an input operation from the relative position of each electrode facing area that represents the area on the detection surface where the input operation electrode and one or more knob position electrodes face each other. The center position of the knob to be used can be set as the input position.

  According to the eighth aspect of the present invention, the knob position electrode can be set to the ground potential via the operator, the capacitance is greatly changed at the position of the detection surface of the knob position electrode, and the position of the knob position electrode is accurately determined. Can be detected well.

  According to the ninth aspect of the invention, the operator can perform an input operation of picking up the knob and moving it on the detection surface while viewing the contents of the input control displayed on the inside of the cylindrical knob.

  According to the invention of claim 10, the knob can be rotated around a specific center position on the detection surface, and the rotation operation direction and the rotation operation angle can be input to the capacitive touch panel.

  According to the invention of claim 11, since the capacitive touch panel can detect the rotation center of the knob from the position of each electrode facing region representing the position on the detection surface where two or more holder position electrodes face each other, the knob It is possible to detect a rotation input operation around the rotation center and an input operation for moving the auxiliary input tool on the detection surface.

  According to the twelfth aspect of the present invention, the rotational position of the knob subjected to the rotational input operation is hardly moved by an external force.

  Further, since the knob is positioned at every predetermined rotation angle by the moderation mechanism, the rotational operation amount for rotating the knob is obtained from the feeling of vibration transmitted from the moderation mechanism to the knob.

The auxiliary | assistant input tool 1 of the capacitive touch panel which concerns on 1st Embodiment of this invention, and the relationship of the input position on the detection surface 50A of the capacitive touch panel 50 are shown, (a) is a capacitive type. The three types of auxiliary input tools 1A, 1B, and 1C that are moved on the detection surface 50A of the touch panel 50 are detected by the capacitive touch panel 50 for the three types of auxiliary input tools 1A, 1B, and 1C. It is explanatory drawing which shows electrode opposing area | region 51A, 51B, 51C, respectively. (A) of auxiliary input device 1A of an electrostatic capacitance type touch panel is an exploded perspective view, and (b) is a bottom view. (A) of the auxiliary input device 1B of the capacitive touch panel is an exploded perspective view, and (b) is a bottom view. (A) of the auxiliary input device 1C of the capacitive touch panel is an exploded perspective view, and (b) is a bottom view. It is explanatory drawing which shows the auxiliary input tool 1A which performs input operation on the detection surface 50A of the capacitive touch panel 50, and two fingers T1 and T2 to be multi-touched. The detection signal level VS (m, n) detected by the capacitive touch panel 50 at the intersection S (m, n) of the detection electrodes on the detection surface 50A when an input operation is performed on the detection surface 50A with the auxiliary input tool 1A. It is explanatory drawing which shows. When an input operation is performed on the detection surface 50A with two fingers T1 and T2, the detection signal level VS (m) detected by the capacitive touch panel 50 at the intersection S (m, n) of the detection electrodes on the detection surface 50A , N). Explanation for schematically explaining a change in the detection signal level VS (x, y) at each position (x, y) along the position on the detection surface 50A where the maximum value of the detection signal level VS (m, n) is detected. FIG. It is a disassembled perspective view which shows the auxiliary input tool 20 of the capacitive touch panel concerning 2nd Embodiment of this invention. 4 is a longitudinal sectional view of the auxiliary input device 20 disposed on the capacitive touch panel 50. FIG. 4 is a bottom view of the auxiliary input tool 20. FIG. It is explanatory drawing which shows the electrode opposing area | region 51A, 51D, 51E1, 51E2, 51E3 which the electrostatic capacitance type touch panel 50 detected about the auxiliary input tool 20 before input operation. It is explanatory drawing which shows the electrode opposing area | region 51A, 51D, 51E1, 51E2, 51E3 which the electrostatic capacitance type touch panel 50 detected about the auxiliary input tool 20 rotated and operated by rotation angle (theta). The auxiliary input device 100 of the conventional electrostatic capacitance type touch panel is shown, (a) is a perspective view, (b) is a bottom view, and (c) is a longitudinal sectional view. It is explanatory drawing explaining the method to discriminate | determine the input operation of the input operation body which multi-touchs with the input operation of the conventional auxiliary input tool 100 with a capacitive touch panel.

  Hereinafter, an auxiliary input device (hereinafter referred to as an auxiliary input device) 1 of the capacitive touch panel according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 8. As shown in FIGS. 1 to 4, the auxiliary input device 1 includes a knob 2 formed in a cylindrical shape with an insulating synthetic resin, and a set of split electrodes of a first split electrode 3 and a second split electrode 4. The input operation electrode 5, the disc-shaped touch electrode 7 made of a conductive metal plate attached to the upper end surface of the knob 2, and the nut-shaped first and second split electrodes 3 and 4, respectively. The knob 2 and the touch electrode 7 are composed of two connecting screws 8 and 9 that are integrated together. However, the connecting screws 8 and 9 are not necessarily used as means for electrically connecting the knob 2 and the touch electrode 7.

On the bottom surface of the knob 2, a mounting recess for receiving the first split electrode 3 and the second split electrode 4 is formed so that the first split electrode 3 and the second split electrode 4 to which the connecting screws 8 and 9 are screwed. Is exposed to the bottom surface side of the knob 2 from the inside of the mounting recess. Distance L ₁ between the center positions of the first minute electrode 3 of the input operation electrode 5 second minute electrode 4, a capacitive touch panel input operation body such as a plurality of fingers (hereinafter, referred to as a touch panel) 50 Detection of In the multi-touch that touches the surface 50A at the same time, the distance is sufficiently shorter than the assumed minimum distance between the center positions of the plurality of input operating bodies. Here, in the multi-touch input operation in which two fingers touch the detection surface 50A at the same time, the minimum distance between the center positions of the two fingers is assumed to be 15 mm, and the first separation electrode 3 shown in FIGS. When is the distance L ₁ between the center positions of the second minute electrode 4 and 10 mm.

The combinations of the shapes of the three types of auxiliary input tools 1A, 1B, and 1C that are exposed on the bottom surface of the knob 2 of the first split electrode 3 and the second split electrode 4 are different, and the auxiliary input tools 1A shown in FIG. Each of the first and second divided electrodes 3A and 4A is a small circle, the first divided electrode 3B of the auxiliary input device 1B shown in FIG. 3 is a large circle, and the second divided electrode 4B is a small circle. The first split electrode 3C of the auxiliary input tool 1C has a large circle, and the second split electrode 4C has a quadrangular shape. Since the distance between the center positions of the first and second split electrodes 3 and 4 of the auxiliary input tools 1A, 1B and 1C is equal to L1, the input operation electrode 5 which separates the first and second split electrodes 3 and 4 from each other. The widths of the slits 10 are different from δ _A , δ _B , and δ _C , respectively.

  The first split electrode 3 and the second split electrode 4 of the input operation electrode 5 are electrically connected to the touch electrode 7 by fastening the knob 2 and the touch electrode 7 together with conductive connecting screws 8 and 9. On the other hand, since the operator is generally at the ground potential, when the knob 2 of the auxiliary input tools 1A, 1B, 1C is moved along the detection surface 50A of the touch panel 50 as shown in FIG. The finger of the operator who picks up the knob 2 touches the first split electrode 3 and the second split electrode 4 which are electrically connected to the touch electrode 7, and the ground potential is also applied. As a result, at the position of the detection surface 50A where the first split electrode 3 and the second split electrode 4 approach each other, the electrostatic capacity is larger than when the insulated first split electrode 3 and the second split electrode 4 approach each other. The capacitance changes, and the detection accuracy of the positions of these electrodes 3 and 4 on the touch panel 50 can be increased.

  The touch panel 50 that detects the input position of the auxiliary input tool 1 from the position on the detection surface 50A of the input operation electrode 5 is a capacitive touch panel that detects the position of the input operation electrode 5 by a so-called mutual capacitance method. As shown in FIG. 13, 13 drive electrodes TYn (n) wired in the X direction at an equal pitch of 6 mm in the Y direction along the rectangular detection surface 50A having the X and Y directions on the surface of the insulating panel as outlines. 0 to 12) and 15 detection electrodes RXm (n is 0 to 14) wired in the Y direction at an equal pitch of 6 mm in the X direction, are connected to each other at each intersection S (m, n). Insulated and wired in a grid. For convenience of explanation, the position (x, y) in the X and Y directions on the detection surface 50A is represented by the wiring position of the detection electrode RXm and the drive electrode TYn. For example, the intersection S (m, n) In the following description, it is assumed that m is in the direction and n is in the Y direction on the detection surface 50A.

  Each of the drive electrodes TYn0 to 12 is driven and scanned for each of the drive electrodes TYn0 to 12 and a drive signal that is a rectangular wave signal of a predetermined voltage is sequentially output from a detection signal generation circuit (not shown) at different timings. While the drive signal is output from the drive electrode TYn, the intersecting detection electrodes RX0 to RX14 are connected to a signal voltage detection circuit (not shown) independently of each other, and sequentially detected at different timings for the detection electrodes RX0 to RX14. A detection signal level VS (m, n) of the detection signal is detected.

  Here, when the input operation bodies T1 and T2 such as fingers and the input operation electrode 5 of the auxiliary input tool 1 touch or come close to the detection surface 50A of the touch panel 50, the intersection S () of the drive electrode TYn and the detection electrode RXm in the vicinity thereof. m, n) increases in electrostatic capacitance (floating capacitance), and part of the drive signal flowing from the drive electrode TYn intersecting at the intersection S (m, n) to the detection electrode RXm is input operation bodies T1, T2. The signal voltage of the detection signal that flows to the input operation electrode 5 of the auxiliary input tool 1 and is detected from the detection electrode RXm at the intersection S (m, n) decreases.

  In the present embodiment, the detection signal level VS (m, n) of the detection signal detected for each intersection S (m, n) is set near the intersection S (m, n). From the state in which the input operation electrode 5 does not exist, the input operation body and the input operation electrode 5 approach the intersection S (m, n), and the voltage drop is such that the signal voltage of the detection signal decreases. Is expressed as a numerical value obtained by converting the difference voltage into a numerical value and reversing the sign. For convenience of explanation, the detection signal level VS (m, n) detected at each intersection in FIGS. 6 and 7 is the vicinity of the intersection S (m, n) of the input operating bodies T1, T2 and the auxiliary input tool 1. When the input operation electrode 5 does not exist, “0” is expressed, and the maximum value when the input operation bodies T1 and T2 and the input operation electrode 5 touch the intersection S (m, n) is expressed as “100”. Yes.

  Hereinafter, the method of detecting the input operation of the knob 2 of the auxiliary input tool 1 using the touch panel 50 will be described in the case shown in FIG. 5 in which the knob 2 of the auxiliary input tool 1A inputs the position on the detection surface 50A of the touch panel 50. To do. The touch panel 50 has a detection signal level VS (m, n) that changes when the first dividing electrode 3A and the second dividing electrode 4A of the auxiliary input tool 1A approach at each intersection S (m, n) of the detection surface 50A. To detect.

  In the case of an input operation of the knob 2 of the auxiliary input tool 1A, the detection signal level VS (m, n) detected at each intersection S (m, n) of the detection surface 50A is, for example, a numerical value shown in FIG. The detection signal level VS (x, y) at each position (x, y) on the detection surface 50A calculated from the distribution of the detection signal level VS (m, n) detected at each intersection S (m, n) is: As shown in FIG. 8, local maximum values are obtained in the vicinity of the center positions of the first and second divided electrodes 3A and 4A, and valleys are formed at the positions of the slits 10 separating the first and second divided electrodes 3A and 4A. As a whole, the curve changes with an upward mountain curve.

  In addition, in the multi-touch input operation using the two finger input operation bodies T1 and T2, the detection signal level VS (m, n) detected at each intersection S (m, n) of the detection surface 50A is, for example, FIG. The detection signal level VS (at each position (x, y) on the detection surface 50A calculated from the distribution of the detection signal level VS (m, n) detected at each intersection S (m, n). As shown in FIG. 8, x, y) is a local maximum in the vicinity of the center position of the first finger T1 and the second finger T2, and is a valley at a position between the fingers T1 and T2. It changes with an upward mountain curve.

Therefore, both curves are similar, and when the touch panel 50 detects the detection signal level VS (m, n) for all the intersections S (m, n), the input operation bodies T1 and T2 or the auxiliary input tool 1 Since it cannot be determined whether the input operation is performed by the knob 2, first, the detection signal level VS (in both the X and Y directions is detected from the detection signal level VS (m, n) detected for all the intersections S (m, n). m, n) detects all intersections S (m, n) where the maximum value is detected, and whether or not the minimum value detected between the positions where each maximum value is detected is due to noise or a detection error. Determine. That is, the maximum value of the change due to noise or detection error is the noise determination threshold value T _N , and the difference between one of the two maximum values and the minimum value between them is the noise determination threshold value T _N (for example, “5” in FIG. 6). If the value is less than the value, the minimum value is detected by noise or a detection error, and the two maximum values are detected from the single first dividing electrode 3, the second dividing electrode 4, or the input operation bodies T1 and T2. The maximum value with the lower detection signal level VS (m, n) is not assumed to be the maximum value. On the other hand, if it is equal to or greater than the noise determination threshold _TN, it is considered that the minimum value between the two maximum values is detected by the slit 10 of the input operation electrode 5 or the gap between the input operation bodies T1 and T2 to be multi-touched. .

For example, as shown in FIG. 6, the minimum detected at the intersection (4, 2) where the two maximum values “60” and “62” are detected, and the intersection (5, 2) between the intersections (6, 2). Since the value “45” is different from the local maximum value “60” on the lower side by the noise determination threshold value T _N “5” or more, the two local maximum values “60” “62” It is considered that the second split electrode 4 or the input operation bodies T1 and T2 are detected by being close to each other. At this stage, whether or not the two maximum values “60” and “62” are detected by the first split electrode 3 and the second split electrode 4 of the auxiliary input tool 1, or a plurality of other multi-touch input operating bodies. It is unknown whether it was detected by T1, T2, and then, from the positions of the intersection (4, 2) and intersection (6, 2) where the two maximum values “60” and “62” were detected, respectively. The center position (x, y) on the detection surface 50A of the input operation is calculated and obtained, and it is determined from the distance between the center positions.

  The calculation of the center position (x, y) of the first and second split electrodes 3 and 4 or the input operating bodies T1 and T2 is performed by calculating the intersection (m, n) where the maximum value is detected and the intersection (m, n). ) Is calculated from a weighted average of detected voltage levels R (m, n) detected from surrounding intersections (m, n). For example, for the intersection (4, 2) where the maximum value “60” in FIG. 6 is detected, the detected voltage level VS (3-5, 1-3) at the surrounding intersection (3-5, 1-3). The center position (x, y) of the input operation from which the maximum value “60” is detected is obtained from the weighted average of.

  The detection of the center position x in the X direction of the input operation is obtained from the weighted average value in the X direction of the detection voltage level VS (3-5, 1-3). That is, Sum (x = 3) “65” of the detection voltage level VS (3-5, 1-3) in the Y direction for each of the detection electrodes RX3 to RX5 of the detection voltage level VS (3-5, 1-3), Sum (x = 4) “150” and Sum (x = 5) “118” are obtained, the sum “333” is calculated, and the wiring positions of the detection electrodes RX3 to RX5 are added to each Sum (x = 3-5). Each time, the sum “1385” is calculated by multiplying the weight assigned to the position “3-5” in the X direction. The center position x in the X direction calculated from this weighted average is about 4.16 of “1385” / “333”.

  The center position y in the Y direction is the sum (X) of the detection voltage level VS (3-5, 1-3) in the X direction for each of the drive electrodes TY1 to TY3 of the detection voltage level VS (3-5, 1-3). y = 1) “104”, Sum (y = 2) “127”, Sum (y = 3) “102”, the sum “333”, and each Sum (y = 1-3) includes drive electrodes TY1 to TY3. Each wiring position is multiplied by a weight assigned to the position “1-3” in the Y direction to calculate the sum “664”. From the weighted average, the center position y in the Y direction is “664” / “333”. It becomes about 2.00. Accordingly, the center position (x, y) of the input operation where the maximum value “60” in FIG. 6 is detected is calculated as (4.16, 2.00).

  Similarly, the center position (x, y) of the input operation in which the maximum value “62” in FIG. 6 is detected is calculated as (5.96, 2.02), and the distance between the center positions is about Considering the wiring pitch of 6 mm in the XY direction between the drive electrode TYn and the detection electrode RXm, the actual distance on the detection surface 50A is about 10.8 mm, and the minimum distance between the center positions of the two fingers Since it is sufficiently shorter than 15 mm, it can be identified as a multi-tap input operation by two or more input operation bodies, and can be determined as an input operation by the knob 2 of the auxiliary input tool 1, and the center position of the first split electrode 3 (4.16). , 2.00) and the center position (5.96, 2.02) of the second split electrode 4, the input position (x, y) of the auxiliary input tool 1 is detected.

  The actual distance on the detection surface 50A between the center positions of the input operations where the two maximum values “60” and “62” are detected is about 10.8 mm, and the first split electrode 3 set for the auxiliary input tool 1 is used. Therefore, it may be determined that the input operation is performed by the knob 2 of the auxiliary input tool 1.

On the other hand, the minimum values “6” and “6” shown in FIG. 7 are detected at the intersection (6, 6) and the intersection (7, 8) between the intersections (9, 10). 15 ”has a difference between the local maximum value and the noise determination threshold value T _N “ 5 ”or more, so the two local maximum values“ 70 ”and“ 75 ”are the independent first dividing electrode 3 and second dividing electrode 4 or input operation. From the positions of the intersections (6, 6) and the intersections (9, 10) where the two maximum values “70” and “75” are detected, The center position (x, y) on the detection surface 50A for the input operation is calculated, and the distance between the center positions is obtained.

  The center position (x, y) of the input operation for the intersection (6, 6) where the maximum value “70” in FIG. 7 is detected is the detected voltage level VS of the surrounding intersection (5-7, 5-7). From the weighted average weighted by the same method (5-7, 5-7), the center position (x, y) on the detection surface 50A is calculated as (5.86, 6.00). Further, the center position (x, y) of the input operation for the intersection (9, 10) where the maximum value “75” in FIG. 7 is detected is the detection voltage of the surrounding intersection (8-10, 9-11). The center position (x, y) on the detection surface 50A is calculated as (8.92, 9.88) from the weighted average weighted by the same method of the level VS (8-10, 9-11). As a result, the distance between the center positions of the two input operations where the maximum values “70” and “75” shown in FIG. 7 are detected is about 4.94, and the wiring pitch in the XY direction between the drive electrode TYn and the detection electrode RXm. If 6 mm is considered, the actual interval on the detection surface 50A is about 29.64 mm, which is longer than the minimum distance of 15 mm between the center positions of the two input operating bodies to be multi-tapped. The input operation is determined by the operating bodies T1 and T2.

  In addition, as shown in FIG. 2, the distance between the center positions of the first split electrodes 3 and the second split electrodes 4 of the auxiliary input devices 1A, 1B, and 1C is equal to L1, but the first split electrodes 3 and Since the combinations of shapes exposed on the bottom surface of the knob 2 of the second split electrode 4 are different, the detection signal level VS (x, y) is equal to or higher than a certain value (for example, “35”) when the electrodes face each other and come close to each other. A region 6 on the detection surface 50A (hereinafter referred to as an electrode facing region) 6 is an electrode facing region 51A, 51B, 51C composed of a combination of three different shapes and areas.

  That is, as shown in FIG. 1 (b), since the first split electrode 3A and the second split electrode 4A of the auxiliary input tool 1A are both small circles, the electrodes detected at the arrangement position of the auxiliary input tool 1A. The opposing region 51A is detected at the position of the auxiliary input tool 1B because the shape of the two small circular contours, the first split electrode 3B of the auxiliary input tool 1B is a large circle, and the second split electrode 4B is a small circle. The electrode facing region 51B has a contour shape composed of a combination of a large circle and a small circle, the first split electrode 3C of the auxiliary input tool 1C is a large circle, and the second split electrode 4C is a quadrangle. The electrode facing region 51C detected at the position of 1C has a contour shape formed of a combination of a large circle and a quadrangle.

  The touch panel 50 assumes that the center positions of the first dividing electrode 3A and the second dividing electrode 4A are in the vicinity of each intersection S (m, n) where two maximum values are detected, and the intersection S (m, n n), and when the detection signal level VS (m, n) is, for example, “35” or more, the contour shape and area of the electrode facing region 51 are estimated from the position of the surrounding intersection S (m, n), and the electrode facing region If it is 51A, it will determine with input operation of auxiliary input tool 1A, if it is electrode opposing area 51B, input operation of auxiliary input tool 1B, and if it is electrode opposing area 51C, it will be determined as input operation of auxiliary input tool 1C.

  Next, the auxiliary input device 20 of the capacitive touch panel according to the second embodiment of the present invention that can be rotated and input on the detection surface 50A of the capacitive touch panel 50 will be described with reference to FIGS. I will explain. In the description of the second embodiment, the same or similar components as those in the first embodiment described above are denoted by the same reference numerals and the description thereof is omitted.

  As shown in FIGS. 9 to 11, the auxiliary input tool 20 loosely fits the knob operating body 21 and the knob operating body 21 from above and accommodates the knob operating body 21 around the central axis C of the knob 22 so as to be rotatable. A cylindrical bowl-shaped insulating holder 30, an annular body 32 attached along the cylindrical inner wall surface of the holder 30, and three holder position electrodes 33 attached to the outer periphery of the holder 30 at intervals of 120 degrees. It is configured.

  The knob operation body 21 includes a knob 22 formed in a cylindrical shape with an insulating synthetic resin, an input operation electrode 5 including a pair of first and second split electrodes 3A and 4A, and a small circular shape. It has a knob position electrode 23 and a ring-shaped touch electrode 24 made of a conductive metal plate attached to the upper end surface of the knob 22, and penetrates the knob 22 in the vertical direction through three connecting screws 8, 9, 25. Then, the nut-shaped first split electrode 3A, the second split electrode 4A and the knob position electrode 23 arranged on the bottom surface side are respectively screwed together, and the knob 22 and the touch electrode 24 are fastened together to be integrally formed.

The input operation electrode 5 and the knob position electrode 23 composed of the first split electrode 3A and the second split electrode 4A are respectively housed in mounting recesses that are recessed at positions symmetrical with respect to the central axis C of the bottom surface of the knob 22. It is exposed along the bottom surface of the knob 22 from the inside of the mounting recess. Distance L ₁ between the center positions along the detection surface 50A of the first minute electrode 3A and the second minute electrodes 4A, similarly to the auxiliary input device 1, can detect the slit 10 in between the touch panel 50, the detection surface 50A 10 mm, which is sufficiently shorter than the minimum distance of 15 mm between the center positions of two fingers for multi-touch input operation.

  The three holder position electrodes 33 attached to the outer periphery of the holder 30 are each formed by pressing a conductive metal plate into a strip shape, and are radially formed from the central axis C on the bottom surface of the knob 22, as shown in FIG. It is exposed in a rectangular outline, and protrudes in a state inclined obliquely upward toward the central axis C on the plane side of the knob 22. On the other hand, the diameter of the ring-shaped touch electrode 24 attached to the flat surface of the knob 22 is longer than the diameter of the knob 22 and is substantially equal to the diameter of the cylindrical bowl-shaped holder 30. When accommodated in the holder 30, the inclined upper ends of the three holder position electrodes 33 are in elastic contact with the touch electrode 24.

  A boss 32 a protrudes at a position around the axis of the cylinder on the annular body 32 disposed between the inner wall surface of the cylinder of the holder 30 and the knob 22 accommodated in the holder 30. In addition, a large number of notches 25 are formed at equal angular intervals around the central axis C on the outer surface of the knob 22 facing the boss 32a, and the central axis C with respect to the holder 30 is formed by the boss 32a and the large number of notches 25. A moderation mechanism is configured to temporarily fix the knob operation body 21 that is rotated around at predetermined angular intervals.

  Here, the holder 30 is fixed at a predetermined position on the detection surface 50A by an adhesive sheet (not shown) interposed between the bottom surface of the holder 30 and the detection surface 50A of the touch panel 50. Accordingly, the knob 22 of the knob operation body 21 rotatably accommodated in the holder 30 is rotated around the central axis C passing through the fixed position on the detection surface 50A.

  Since the entire area of the detection surface 50A of the touch panel 50 is formed of a transparent material and the liquid crystal display panel 40 is laminated below the touch panel 50 as shown in FIG. 10, the knob 22 of the auxiliary input tool 20 is input. The operating operator can visually check the display on the liquid crystal display panel 40 from above the cylindrical knob 22.

  Hereinafter, a method for detecting the rotation input operation of the knob 22 of the auxiliary input tool 20 using the touch panel 50 will be described with reference to FIGS. 12 and 13. In a state where the knob operation body 21 is accommodated in the holder 30 before the rotation input operation, as shown in FIG. 12, the touch panel 50 includes an input operation electrode 5 including a first dividing electrode 3A and a second dividing electrode 4A, a knob Electrode facing regions 51A, 51D in which the detection signal level VS (x, y) is “35” or more at the position (x, y) on the detection surface 50A where the position electrode 23 and the three holder position electrodes 33 face each other. , 51E1, 51E2, 51E3 are detected.

Of these, the distance D ₁ of the between two small circular center position of the two small circular profile of the electrode facing region 51A is sufficiently shorter than the minimum distance 15mm multi-touch input operations, first minute electrode 3A and the second Since the distance L1 is substantially equal to the distance L1 between the center positions of the split electrodes 4A, the multi-touch input operation is identified and the input operation of the knob 22 of the auxiliary input tool 20 is determined. Further, since the electrode facing region 51A has two small circular outlines, it is determined that the input operation is performed by the knob 22 to which the input operation electrode 5 including the first split electrode 3A and the second split electrode 4A is attached.

  The rotation input operation of the auxiliary input tool 20 is performed by the position (xn, yn) on the detection surface 50A of the input operation electrode 5 attached to the knob operation body 21 that rotates around the fixed central axis C on the detection surface 50A. The position (xn, yn) of the input operation electrode 5 is obtained from the midpoint of the center positions of the two small circles in the electrode facing region 51A.

  The position (xc, yc) of the fixed central axis C on the detection surface 50A can be obtained from various methods. Here, the region where the electrode-opposing region 51D having a small circular outline is independently detected is the knob position. It is presumed that the electrode 23 is opposed, the center position (xnf, ynf) of the knob position electrode 23 is obtained from the center of the electrode facing area 51D, and the position (xn, yn) of the input operation electrode 5 and the knob position electrode 23 The midpoint of the position (xnf, ynf) is set as the position (xc, yc) of the central axis C. The holder 30 is fixed on the detection surface 50A, and the position (xc, yc) of the central axis C is determined from the midpoint between the position (xn, yn) of the input operation electrode 5 and the position (xnf, ynf) of the knob position electrode 23. When obtaining, the holder position electrode 33 is not necessarily attached to the holder 30.

  For the position (xc, yc) of the central axis C, the holder 30 is fixed on the detection surface 50A in advance so that the known position (x, y) on the detection surface 50A is the center position of the holder 30. The position (x, y) is set as the position (xc, yc) of the central axis C, and as described later, each position (xh1) of the electrode facing regions 51E1, 51E2, 51E3 representing the facing positions of the three holder position electrodes 33 , Yh1), (xh2, yh2), (xh3, yh3). When the position (xc, yc) of the central axis C is obtained by these methods, the knob position electrode 23 is not necessarily attached to the knob 22.

  The detection of the electrode facing regions 51E1, 51E2, 51E3 on the detection surface 50A is performed with the shape projected on the detection surface 50A of the three holder position electrodes 33 centered on the position (xc, yc) of the central axis C. When the electrode facing regions 51 detected at three locations are respectively concentric and have a rectangular shape in the radial direction from the center. The electrode facing regions 51E1, 51E2, and 51E3 are determined.

  The rotation input operation of the auxiliary input tool 20 is performed by rotating the knob operation body 21 around the central axis C with respect to the holder 30 fixed to the detection surface 50A of the touch panel 50, and the touch panel 50 before and after the input operation. Assuming that the detected electrode facing areas 51A, 51D, 51E1, 51E2, and 51E3 have changed from the positions shown in FIG. 12 to FIG. 13, the position of the electrode facing area 51A representing the center position of the input operation electrode 5 is (xn1, yn1) changes to (xn2, yn2), and the rotation operation direction (clockwise direction in the figure) and rotation operation angle of the knob 22 of the auxiliary input tool 20 are detected from the change of the position around the central axis C. .

  If the control content for controlling the controlled device by the rotation input operation direction and the rotation input operation angle detected by the touch panel 50 is displayed on the liquid crystal display panel 40 inside the cylindrical knob 22. The input operator of the auxiliary input tool 20 can rotate and operate the auxiliary input tool 20 while looking at the control content.

  Since the knob position electrode 23 also moves around the central axis C when the knob operating body 21 is rotated around the central axis C, the position (xnf, ynf) of the electrode facing region 51D that represents the region that the knob position electrode 23 faces. The rotational operation direction and rotational operation angle of the knob 22 of the auxiliary input tool 20 may be detected from the relative movement position around the central axis C).

  In the above-described embodiment, the holder 30 of the auxiliary input tool 20 is fixed on the detection surface 50A and only the rotation input operation of the knob 22 of the auxiliary input tool 20 is performed. The input operation of the knob 22 of the auxiliary input tool 20 may be performed by moving to an arbitrary position above.

  In the input operation of the knob 22 of the auxiliary input tool 20, first, the touch panel 50 has a distance D 1 between two center positions included in the electrode facing region 51 representing the facing position of the input operation electrode 5. Since the distance is sufficiently shorter than the minimum distance of 15 mm, it is determined that the input operation is performed by the auxiliary input tool 20. Subsequently, the position (xn, yn) of the input operation electrode 5 is obtained from the midpoint between the center positions of the two small circles in the electrode facing region 51A, and between the input operation electrode 5 attached to the knob 22 and the knob position electrode 23. An electrode facing region 51D that represents a region facing the knob position electrode 23 is detected from the distance and the electrode facing region 51 that is independently represented by a small circular outline, and the position of the knob position electrode 23 on the detection surface 50A is detected from the center position. (Xnf, ynf) is obtained.

  Since the center position of the auxiliary input tool 20 is an intermediate position between the input operation electrode 5 and the knob position electrode 23, the position on the detection surface 50 </ b> A of the auxiliary input tool 20 is (xn, yn) and ( xnf, ynf), and the input operation of the knob 22 of the auxiliary input tool 20 is detected from the relative change in the position on the detection surface 50A of the auxiliary input tool 20 detected every detection cycle.

  Further, the position of the auxiliary input tool 20 is determined by the positions (xh1, yh1), (xh2, yh2) of the electrode facing regions 51E1, 51E2, 51E3 representing the regions facing the three holder position electrodes 33 detected by the above-described method. ), (Xh3, yh3), and the input operation of the knob 22 of the auxiliary input tool 20 may be detected from the relative change in the position.

  Since the auxiliary input tool 20 accommodates a plurality of different knob operation bodies 21 with respect to a common holder 30 and can perform an input operation and a rotation input operation, the input attached to each knob 22 of the plurality of knob operation bodies 21 is possible. If the combination of the shapes exposed on the bottom surface of the knob 2 of the operation electrode 5 (the first divided electrode 3 and the second divided electrode 4) is different, any knob operation body 21 can be obtained from the shape and size of the electrode facing region 51. It is possible to determine whether the input operation is a rotation input operation or a rotation input operation.

  In the first embodiment described above, the combination of the shapes of the first split electrode 3 and the second split electrode 4 that are exposed on the bottom surface of the knob 2 is different, and the touch panel 50 has a plurality of auxiliary input devices 1A, 1B, 1C. Although the specific auxiliary input tool 1 is discriminated, the input operation electrode 5 is divided into a plurality of dividing electrodes including the first dividing electrode 3 and the second dividing electrode 4 by a plurality of slits 10, and a plurality of auxiliary input tools 1 are obtained. The specific auxiliary input tool 1 may be determined from the number and width of the slits 10 detected by the touch panel 50 by varying the number of slits 10 formed in each input operation electrode 5 and the width of the slits 10.

  Further, the knob position electrode 23 is attached at a position symmetrical to the input operation electrode 5 with respect to the central axis C of the knob 2, but the attachment position to the knob 2 is not limited to this. The number of knob position electrodes 23 attached to the knob 2 and the relative position with respect to the input operation electrode 5 for the plurality of auxiliary input tools 1 are made different from each other, and the electrode facing region 51D representing the facing region of the knob position electrode 23 on the touch panel 50. The specific auxiliary input tool 1 can also be discriminated from the number and the relative position with the electrode facing region 51 representing the facing region of the input operation electrode 5.

  In the above-described embodiment, all the electrodes 5, 7, 23, 33 attached to the knobs 2, 22 are electrically connected to the touch electrodes 7, 24, and these electrodes 5, 7, 23, 33 are connected to the operator. However, as long as the touch panel 50 can detect a change in capacitance due to the approach of the electrodes 5, 7, 23, and 33, the electrical connection to the touch electrodes 7 and 24 is not necessarily required.

  Further, the touch electrodes 7 and 24 may be attached at any position of the knobs 2 and 22 as long as the touch electrodes 7 and 24 are touched when the input operator performs an input operation.

  INDUSTRIAL APPLICABILITY The present invention is suitable for an auxiliary input device for a capacitive touch panel that can be easily distinguished from an input operation of an input operation body such as a finger in a capacitive touch panel.

DESCRIPTION OF SYMBOLS 1, 20 Auxiliary input tool 2 Knob 3 1st part electrode 4 2nd part electrode 5 Input operation electrode 7, 24 Touch electrode 10 Slit 25, 32a Moderation mechanism 30 Holder 33 Holder position electrode 40 Display means (liquid crystal display panel)
50 Capacitive touch panel 50A Detection surface 51 Electrode facing area T1 Input operation body (finger)
T2 input operation body (finger)

Claims (12)

An insulating knob movably disposed on the detection surface of the capacitive touch panel;
An input operation electrode attached to the knob;
Since the capacitance changes at the position of the detection surface facing the input operation electrode, the capacitance touch panel detects the input operation of the knob that moves on the detection surface. An auxiliary input device,
The input operation electrode has a first dividing electrode and a second dividing electrode separated by a slit detectable by a capacitive touch panel,
The capacitance between the center positions of the first and second split electrodes is sufficiently shorter than the distance between the center positions of two or more input operation bodies that multi-touch the detection surface. Type touch panel auxiliary input device. The input operation electrode has a plurality of dividing electrodes separated by one or more slits detectable by a capacitive touch panel,
The auxiliary input device for a capacitive touch panel according to claim 1, wherein the number of the slits formed in the input operation electrode of each auxiliary input device of the plurality of auxiliary input devices is different from each other.   2. The static electricity according to claim 1, wherein combinations of projection areas or projection shapes obtained by projecting the first and second split electrodes of each of the plurality of auxiliary input tools onto the detection surface are different from each other. Auxiliary input device for capacitive touch panel.   2. The auxiliary input device for a capacitive touch panel according to claim 1, wherein the slits separating the first and second divided electrodes of each auxiliary input device of the plurality of auxiliary input devices have different widths.   The auxiliary input of the capacitive touch panel according to any one of claims 1 to 4, wherein a touch electrode electrically connected to the input operation electrode is attached to an outer peripheral surface of the knob. Ingredients. Further comprising one or more knob position electrodes attached to the knob;
The combination of the relative operation position attached to the knob of the input operation electrode of each auxiliary input tool of the plurality of auxiliary input tools and the knob of the one or more knob position electrodes is different from each other. Auxiliary input device for capacitive touch panel.   The one or more knob position electrodes can be detected by the capacitive touch panel from a relative mounting position of the input operation electrode and the one or more knob position electrodes. The auxiliary input device for a capacitive touch panel according to claim 6, wherein the auxiliary input device is attached to the position of the capacitive touch panel.   The auxiliary input device for a capacitive touch panel according to claim 6 or 7, wherein a touch electrode electrically connected to the knob position electrode is attached to an outer peripheral surface of the knob.   The capacitance type according to any one of claims 1 to 8, wherein the knob has a cylindrical shape in which a display of a display unit stacked on the capacitance type touch panel can be visually observed. Auxiliary input device for touch panel.   10. The holder according to claim 1, further comprising a holder that is disposed on a detection surface of the capacitive touch panel and that accommodates the knob so as to be rotatable around a rotation axis orthogonal to the detection surface. The auxiliary input device of the capacitance-type touch panel of any one of Claims.   The auxiliary of the capacitive touch panel according to claim 10, wherein two or more holder position electrodes capable of detecting the rotation axis of the knob by the capacitive touch panel are attached to the holder. Input tool.   12. The moderation mechanism for positioning the knob that rotates about a rotation axis for each predetermined rotation angle is provided between the knob and the holder. Auxiliary input device for the described capacitive touch panel.

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