Pen-shaped electronic device

Abstract

A pen-type electronic apparatus (1) comprising: a tubular housing (30) that has a grip section (101) which is gripped by a user; a pen shaft (10) that is housed in the interior of the housing (30); a sheet-shaped pressing sensor (20) that is wound in a location on an outside surface of the pen shaft (10) or an inside surface of the housing (30), said location overlapping with the grip section (101); and a cushioning material (50) that is positioned between the pen shaft (10) and the pressing sensor (20), or between the pressing sensor (20) and the housing (30), wherein the pressing sensor (20) has a low-sensitivity region at a center portion (102) of the grip section (101) along the lengthwise direction of the pen shaft (10).

Description

Technical Field

[0001] The present invention relates to a pen-shaped electronic device having a gripping portion gripped by a user.

Background Art

[0002] Patent Document 1 discloses a holding state detection device (pen-shaped electronic device) including a housing having a shape that can be held by an operator, a piezoelectric sensor attached to the housing, and a detection unit that detects the holding state of the housing using the amount of change in the output voltage of the piezoelectric sensor.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When gripping a pen-shaped electronic device, there is a problem that the sensitivity easily varies depending on the gripping location and variations are likely to occur.

[0005] An object of the present invention is to provide a pen-shaped electronic device that prevents variations in sensitivity depending on the gripping location.

Means for Solving the Problems

[0006] The pen-shaped electronic device of this invention includes a cylindrical housing having a gripping portion gripped by a user, a pen shaft housed inside the housing, a sheet-like pressure sensor wound around a position overlapping the gripping portion on either the outer surface of the pen shaft or the inner surface of the housing, and a cushioning material disposed between the pen shaft and the pressure sensor or between the pressure sensor and the housing. The pressure sensor is characterized by having a low-sensitivity region in a central portion along the major axis direction of the pen shaft in the gripping portion.

[0007] The inventors of the present application have discovered that, among the gripping portions, the sensitivity of the central portion along the major axis direction of the pen shaft is high, while the sensitivity of other portions is low. Therefore, the pen-type electronic device of this invention is provided with a low-sensitivity region in the central portion along the major axis direction of the pen shaft in the gripping portion, thereby preventing variations in sensitivity depending on the gripping location.

Effect of the Invention

[0008] According to this invention, variations in sensitivity depending on the gripping location can be prevented.

Brief Description of the Drawings

[0009]

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Embodiments for Carrying Out the Invention

[0010] FIG. 1 is an exploded perspective view of the pen-type electronic device 1. FIG. 2 is a partially transparent side view of the pen-type electronic device 1. FIG. 3 is a cross-sectional view of the pen-type electronic device 1, and FIG. 4 is a partial exploded cross-sectional view taken along line A-A shown in FIG. 3.

[0011] The pen-type electronic device 1 includes a pen shaft 10, a pressure sensor 20, and a housing 30. The pen shaft 10 and the housing 30 are each in a cylindrical shape. The housing 30 has a hollow and is configured to be able to insert the pen shaft 10. The pen shaft 10 may be hollow and capable of accommodating circuit components or the like, or may have a filled shape. The pen shaft 10 and the housing 30 are each made of a resin or metal having a Young's modulus of 1 GPa or more.

[0012] One end of the pen shaft 10 in the longitudinal direction (the direction orthogonal to the circumferential direction) has a tapered pen tip. The outer diameter of the pen shaft 10 is smaller than the inner diameter of the housing 30. The pen shaft 10 is housed inside the housing 30.

[0013] The user grips the grip part 101 of the housing 30 that is close to the pen tip. The user grips the grip part 101 and brings the pen tip into contact with another electronic device (for example, a tablet computer or the like). When the user moves the pen tip, the other electronic device receives the user's operation input by sensing this movement.

[0014] The pressing sensor 20 is a member on a flexible sheet and has an elongated shape. The pressing sensor 20 is spirally wound along the outer surface of the pen shaft 10 at a portion corresponding to the gripping portion 101. However, it is not essential in the present invention that the pressing sensor 20 be spirally wound. For example, the pressing sensor 20 may be wound around all of the portion corresponding to the gripping portion 101 on the outer surface of the pen shaft 10.

[0015] Also, generally, a pressing sensor is often arranged over the entire required pressing detection area. However, if it is configured to be arranged over the entire area, the area of the pressing sensor becomes large, which is often a demerit in terms of cost. On the other hand, the sheet-like pressing sensor 20 as shown in the present embodiment has an elongated shape and is configured to be spirally wound around the pen shaft 10, so the area of the pressing sensor 20 can be reduced with respect to the area of the desired pressing detection area. Therefore, it is desirable that the pressing sensor 20 be arranged in such a spiral shape.

[0016] As shown in FIGS. 3 and 4, the pressing sensor 20 is connected to the outer surface of the pen shaft 10 via a joining member 70. That is, the joining member 70 is arranged between the pen shaft 10 and the pressing sensor 20. In the present embodiment, the joining member 70 is a double-sided tape. The joining member 70 is made of an acrylic adhesive or an adhesive having a Young's modulus of 100 kPa or more. Note that the joining member 70 may have the same area as the area of the pressing sensor 20, or may have an area that covers all of the portion corresponding to the gripping portion 101 on the outer surface of the pen shaft 10.

[0017] As shown in FIGS. 3 and 4, a cushioning material 50 is arranged between the pressing sensor 20 and the housing 30. The cushioning material 50 has shrinkability and is made of a resin having a Young's modulus of 100 kPa or more and 1 GPa or less. The cushioning material 50 may also have the same area as the area of the pressing sensor 20, or may have an area that covers all of the portion corresponding to the gripping portion 101 on the outer surface of the pen shaft 10. Further, the cushioning material 50 may have an area that covers the entire outer surface of the pen shaft 10.

[0018] As described above, the outer diameter of the pen shaft 10 is smaller than the inner diameter of the housing 30. Therefore, the pen shaft 10 is configured to be storable inside the housing 30. However, due to manufacturing errors, the outer diameter of the pen shaft 10 may be larger or smaller than the target outer diameter. Also, the housing 30 may be larger or smaller than the target inner diameter due to manufacturing errors.

[0019] If the outer diameter of the pen shaft 10 is larger than the target and the inner diameter of the housing 30 is smaller than the target, it may not be possible to store the pen shaft 10 inside the housing 30. Therefore, the outer diameter of the pen shaft 10 is designed to be smaller than the target outer diameter by a predetermined value, and the outer diameter of the housing 30 is designed to be larger than the target inner diameter by a predetermined value. This allows the pen shaft 10 to be configured to be storable inside the housing 30 even when manufacturing errors occur.

[0020] On the other hand, a space of a predetermined height is created between the pen shaft 10 and the housing 30. However, in this embodiment, a cushioning material 50 is provided between the pressure sensor 20 and the housing 30. The cushioning material 50 has shrinkability. When the thickness of the cushioning material 50 is thicker than the predetermined height, the cushioning material 50 can shrink to eliminate the space when the pen shaft 10 is stored inside the housing 30. Thereby, when the user grips the housing 30, the deformation caused by the gripping of the housing 30 is transmitted to the pressure sensor 20 via the cushioning material 50.

[0021] Next, FIG. 5 is a cross-sectional view showing the structure of the pressure sensor 20. The pressure sensor 20 has a first electrode 201, a piezoelectric film 202, an adhesive member 203, a second electrode 204, an FPC 205, a third electrode 206, and a cover 207.

[0022] The first electrode 201 is disposed on the first main surface of the piezoelectric film 202. The first electrode 201 is a tape member having adhesiveness and conductivity. The first electrode 201 is grounded and functions as a shield electrode.

[0023] The piezoelectric film 202 is a piezoelectric material that generates polarization on the opposing first main surface (upper surface) and second main surface (lower surface) due to expansion and contraction. For example, the piezoelectric film is made of uniaxially stretched polylactic acid (PLA), or PVDF or the like. The polylactic acid is either L-type polylactic acid (PLLA) or D-type polylactic acid (PDLA). Since polylactic acid generates piezoelectricity through molecular orientation treatment such as stretching, there is no need to perform a poling treatment like other polymers such as PVDF or piezoelectric ceramics. Also, polylactic acid does not have pyroelectricity. Therefore, since polylactic acid does not generate polarization due to the body temperature of the user, it is suitable for pen-type electronic devices such as in this embodiment.

[0024] The FPC 205 is a flexible insulating base material such as polyimide, PET, or liquid crystal polymer. The second electrode 204 is formed on the upper surface side (piezoelectric film 202 side) of the FPC 205. A third electrode 206 is formed on the lower surface side of the FPC 205.

[0025] The second electrode 204 is attached to the piezoelectric film 202 via the adhesive member 203. The second electrode 204 functions as a signal electrode for detecting the voltage generated on the second main surface of the piezoelectric film 202. The third electrode 206 is grounded and functions as a shield electrode. Note that it is not necessary for electrodes to be formed on both the first main surface and the second main surface of the FPC 205. Electrodes may be formed on either the first main surface or the second main surface of the FPC 205. In this case, the shield electrode can also be omitted.

[0026] The cover 207 has adhesiveness, is attached to the third electrode 206, and protects the third electrode 206. However, the cover 207 is not an essential component.

[0027] The first electrode 201 is attached to the pen shaft 10 via the joining member 70. However, the cover 207 may be attached to the pen shaft 10 via the joining member 70. Alternatively, the pressure sensor 20 may be attached to the inner surface of the housing 30. In this case, the joining member 70 is disposed between the pressure sensor 20 and the housing 30. Also, in this case, the cushioning material 50 is disposed between the pressure sensor 20 and the pen shaft 10.

[0028] A detection circuit (not shown) measures the potential difference (voltage) between the first electrode 201 and the second electrode 204. When the detection circuit detects a voltage exceeding a predetermined threshold value, it determines that the gripping portion 101 has been gripped by the user.

[0029] When the user grips the gripping portion 101, first the housing 30 deforms. When the housing 30 deforms, the cushioning material 50 also deforms. When the cushioning material 50 deforms, the pressure sensor 20 also deforms in accordance with the deformation of the cushioning material 50. When the pen shaft 10 does not deform, the lower surface side inside the pressure sensor 20 does not deform and the upper surface side deforms.

[0030] At this time, the adhesive tape 70 has the effect of fixing one side of the pressure sensor 20 to the pen shaft 10. By fixing one side of the pressure sensor 20 to the pen shaft 10, it is possible to suppress the occurrence of an unintended sensor output due to the displacement or unintended deformation of the pressure sensor 20. When pressure is applied to the sensor 20, deformation in the stretching direction or the shrinking direction occurs with respect to the second electrode 204, the FPC 205, and the third electrode 206. As a result, strain in the same direction occurs in the adhesive member 203 and is transmitted to the piezoelectric film 202. As a result, strain in the stretching direction or the shrinking direction occurs in the piezoelectric film 202, and thus an electric field is generated in the thickness direction of the piezoelectric film 202 in accordance with the characteristics of the piezoelectric body, which becomes the output of the sensor.

[0031] Also, when the pen shaft 10 deforms together with the pressure sensor 20, each layer member of the pressure sensor 20 deforms. As a result, the second electrode 204, the FPC 205, and the third electrode 206 are deformed in the bending direction. This causes the second electrode 204 and the third electrode 206 to be deformed in the stretching or shrinking direction. Thereby, the same-direction strain is generated in the adhesive member 203, and it is transmitted to the piezoelectric film 202. As a result, since strain in the stretching or shrinking direction is generated in the piezoelectric film 202, an electric field is generated in the thickness direction of the piezoelectric film 202 according to the characteristics of the piezoelectric body, which becomes the output of the sensor.

[0032] Therefore, the output of the sensor can be changed by changing the housing and the configuration inside the housing.

[0033] When the user holds the gripping portion of the pen-type electronic device, it is assumed that the user holds the center of the pressure detection area and the user holds the end of the detection area. When holding the center of the pressure detection area, the sensor area to which pressure is applied becomes a wide area, whereas when holding the end, the sensor area to which pressure is applied becomes a narrower area compared to the case of applying pressure to the center. For this reason, when holding the end, the sensor output becomes smaller compared to the case of holding the center. As a result, there is a problem that variations in the sensor output within the pressure detection area are likely to occur.

[0034] FIG. 6 is a diagram showing, as a reference example, the difference in the output voltage of the pressure sensor depending on the gripping position in the conventional configuration. The horizontal axis of the graph in the figure corresponds to the gripping position of the pen-type electronic device, and the vertical axis is the voltage.

[0035] As shown in FIG. 6, when the user holds the gripping portion of the pen-type electronic device, the gripping position A3 at the center of the pressure sensor arrangement portion shows a very high voltage. The gripping positions A2 and A4 deviated from the center portion show low voltages, and the gripping position A1 closest to the pen tip and the gripping position A5 farthest from the pen tip show very low voltages.

[0036] When a detection circuit (not shown) detects a voltage exceeding a predetermined threshold value, it determines that the pen-type electronic device is being held by the user. Here, if the threshold value is set corresponding to the voltage when the central gripping position A3 is gripped, the detection circuit cannot determine that the pen-type electronic device is being held when other gripping positions are gripped. On the other hand, if the threshold value is set corresponding to the voltage when the gripping position A1 or the gripping position A5 is gripped, the detection circuit may erroneously determine that the pen-type electronic device is being held due to a voltage such as noise.

[0037] Therefore, the pen-type electronic device 1 of the present embodiment has a low-sensitivity region where the sensitivity of the pressure sensor decreases in the central portion 102. FIG. 7 is a diagram showing a cross-section of a part of the gripping portion 101 of the pen-type electronic device 1.

[0038] As shown in FIG. 7, the cushion material 50 has a notch 51 in the central portion 102. As described above, when the user grips the gripping portion 101, first, the housing 30 deforms. When the housing 30 deforms, the cushion material 50 also deforms. When the cushion material 50 deforms, the pressure sensor 20 also deforms according to the deformation of the cushion material 50.

[0039] Therefore, when the cushion material 50 has a notch 51 in the central portion 102 as shown in FIG. 7, the amount of deformation of the pressure sensor 20 decreases in the central portion 102. Thereby, the pressure sensor 20 constitutes a low-sensitivity region in the central portion 102.

[0040] Note that instead of the cushion material 50, a notch 51 may be provided in the central portion 102 of the pressure sensor 20. Also, another cushion material that is relatively softer than the cushion material 50 may be provided at the position of the notch 51. Further, as shown in FIG. 13, a thin portion 90 may be provided in the central portion 102 of the housing 30. In these cases as well, the pressure sensor 20 constitutes a low-sensitivity region in the central portion 102.

[0041] FIG. 8 is a diagram showing the difference in output voltage of the pressure sensor depending on the gripping location in the pen-type electronic device 1 of the present embodiment. The horizontal axis of the graph in the figure corresponds to the gripping position of the pen-type electronic device, and the vertical axis is the voltage.

[0042] As shown in FIG. 8, in the pen-type electronic device 1 of the present embodiment, there is no significant difference in voltage regardless of which position among the gripping positions A1 to A5 is gripped. Therefore, a detection circuit (not shown) can appropriately detect the user's grip without misjudging it as noise or the like even when the user grips any part of the gripping portion 101.

[0043] In the above embodiment, an example is shown in which the low-sensitivity region of the pressure sensor 20 is configured by the cushion material 50 having the notch 51 in the portion corresponding to the central portion 102. However, the low-sensitivity region can also be configured by various modifications as follows.

[0044] (Modification 1) The low-sensitivity region may be configured by the cushion material 50 having a thin portion in the portion corresponding to the low-sensitivity region of the pressure sensor 20. Also in this case, the amount of deformation of the pressure sensor 20 decreases at the central portion 102.

[0045] (Modification 2) FIG. 9 is a diagram showing a partial cross section of the gripping portion 101 of the pen-type electronic device 1 according to Modification 2. As shown in FIG. 9, the low-sensitivity region may be configured by the joining member 70 having a notch in the portion corresponding to the low-sensitivity region of the pressure sensor 20. Also in this case, the amount of deformation of the pressure sensor 20 decreases at the central portion 102.

[0046] (Modification 3) The low-sensitivity region may be configured by the joining member 70 having a thin portion in the portion corresponding to the low-sensitivity region of the pressure sensor 20. Also in this case, the amount of deformation of the pressure sensor 20 decreases at the central portion 102.

[0047] (Modification 4) FIG. 10 is a cross-sectional view of a part of the gripping portion 101 of the pen-type electronic device 1 according to Modification 4. As shown in FIG. 10, the pen-type electronic device 1 according to Modification 4 includes a spacer 91 between the cushioning material 50 and the housing 30. The spacer 91 has a notch in a portion (central portion 102) corresponding to the low-sensitivity region of the pressure sensor 20. Alternatively, instead of the spacer 91, the thickness of the cushioning material 50 may be made thinner only in the central portion 102 (or thicker in portions other than the central portion 102). Thereby, a low-sensitivity region is formed in the central portion 102 of the pressure sensor 20. Also in this case, the amount of deformation of the pressure sensor 20 decreases in the central portion 102.

[0048] (Modification 5) The spacer 91 may have a thin portion in a portion (central portion 102) corresponding to the low-sensitivity region of the pressure sensor 20. Thereby, a low-sensitivity region is formed in the central portion 102 of the pressure sensor 20. Also in this case, the amount of deformation of the pressure sensor 20 decreases in the central portion 102.

[0049] (Modification 6) FIG. 11 is a cross-sectional view of a part of the pressure sensor 20 of the pen-type electronic device 1 according to Modification 6. As shown in FIG. 11, the second electrode 204 of the pressure sensor 20 has a notch in the central portion 102. Thereby, a low-sensitivity region is formed in the central portion 102 of the pressure sensor 20. Also in this case, the amount of deformation of the pressure sensor 20 decreases in the central portion 102.

[0050] Note that the piezoelectric film 202 of the pressure sensor 20 may have a notch in the central portion 102. Also in this case, a low-sensitivity region is formed in the central portion 102 of the pressure sensor 20. Also in this case, the amount of deformation of the pressure sensor 20 decreases in the central portion 102. Further, for example, a low-sensitivity region may be formed by making the width of the central portion in the longitudinal direction of the piezoelectric film smaller than the width of the end portion.

[0051] (Modification 7) FIG. 12 is a cross-sectional view showing a part of the gripping portion 101 of the pen-type electronic device 1 according to Modification 7. As shown in FIG. 12, the pen shaft 10 has a thin portion in the central portion 102. As a result, a low-sensitivity region is formed in the central portion 102 of the pressure sensor 20. Also in this case, the amount of deformation of the pressure sensor 20 decreases in the central portion 102.

[0052] (Modification 8) FIG. 14 is a cross-sectional view showing a part of the pressure sensor 20 of the pen-type electronic device 1 according to Modification 8. In the above-described embodiment, the pressure sensor 20 was wound around the outer surface of the pen shaft 10 in a spiral shape with a uniform pitch at a portion corresponding to the gripping portion 101. The pressure sensor 20 of Modification 8 is wound such that the pitch is short at the position of the central portion 102 and long at positions other than the central portion 102. As a result, the pressure sensor 20 is arranged less at the central portion 102 and more at positions other than the central portion 102. Also in this case, the amount of deformation of the pressure sensor 20 decreases in the central portion 102. (Modification 9) FIG. 15 is a cross-sectional view showing a part of the pressure sensor 20 of the pen-type electronic device 1 according to Modification 9. The pen-type electronic device 1 according to Modification 9 is divided into a first pressure sensor 20A arranged at the position of the central portion 102 and a second pressure sensor 20B arranged at a position other than the central portion 102. A detection circuit (not shown) measures the voltages of the first pressure sensor 20A and the second pressure sensor 20B, respectively. Further, the detection circuit determines that the gripping portion 101 is gripped by the user when the voltage of the first pressure sensor 20A exceeds a first threshold value or when the voltage of the second pressure sensor 20B exceeds a second threshold value. Here, the first threshold value is set to a value higher than the second threshold value. Also in this case, a low-sensitivity region where the sensitivity of the pressure sensor decreases is formed in the central portion 102.

[0053] Further, the piezoelectric films used for the first pressing sensor 20A and the second pressing sensor 20B may be polylactic acid uniaxially stretched in different directions. For example, when the uniaxial stretching direction of the piezoelectric film of the first pressing sensor 20A with respect to the axial direction of the pen shaft 10 is 20°, and the uniaxial stretching direction of the piezoelectric film of the second pressing sensor 20B with respect to the axial direction of the pen shaft 10 is 45°, the output of the first pressing sensor 20A becomes lower for the same pressing force. That is, the uniaxial stretching direction of the piezoelectric film of the second pressing sensor 20B with respect to the axial direction of the pen shaft 10 is closer to 45° (or 135°) than the uniaxial stretching direction of the piezoelectric film of the first pressing sensor 20A with respect to the axial direction of the pen shaft 10. Also in this case, a low-sensitivity region where the sensitivity of the pressing sensor decreases is formed in the central portion 102.

[0054] When using two types of sensors as described above, the sensor wound around the central portion and the sensor wound around the region other than the central portion do not have to be integrated.

[0055] Note that the above embodiments and various modifications are examples and can be combined as appropriate. For example, two sensors with the same uniaxial stretching direction may be divided and wound.

[0056] The description of this embodiment is illustrative in all respects and not restrictive. The scope of the present invention is shown not by the above embodiments but by the claims. Furthermore, the scope of the present invention is intended to include all modifications within the meaning and scope equivalent to the claims.

[0057] Summarizing the technical concept of this embodiment, it is as follows.

[0058] (1) A cylindrical housing having a grip portion held by a user, A pen shaft housed inside the housing, A sheet-like pressing sensor wound around a position overlapping the grip portion on the outer surface of the pen shaft or the inner surface of the housing, A cushioning material disposed between the pen shaft and the pressing sensor, or between the pressing sensor and the housing; comprising; The pressing sensor is a pen-type electronic device having a low-sensitivity region in a central portion along the longitudinal axis direction of the pen shaft in the gripping portion.

[0059] (2) The low-sensitivity region is configured by the cushioning material having a thin portion or a notch in a portion corresponding to the low-sensitivity region. The pen-type electronic device according to (1) above.

[0060] (3) Comprising a joining member disposed between the pen shaft and the pressing sensor, or between the pressing sensor and the housing; The low-sensitivity region is configured by the joining member having a thin portion or a notch in a portion corresponding to the low-sensitivity region. The pen-type electronic device according to (1) or (2) above.

[0061] (4) The pressing sensor is; a piezoelectric film; a first electrode disposed on a first main surface of the piezoelectric film; a second electrode disposed on a second main surface of the piezoelectric film; and having; The low-sensitivity region is configured by the first electrode or the second electrode having a notch in a portion corresponding to the low-sensitivity region. The pen-type electronic device according to any one of (1) to (3) above.

[0062] (5) The low-sensitivity region is configured by the pen shaft having a thin portion in a portion corresponding to the low-sensitivity region. The pen-type electronic device according to any one of (1) to (4) above.

[0063] (6) A spacer is provided between the pen shaft and the pressure sensor, or between the pressure sensor and the housing. The spacer has a thin portion or a notch in a portion corresponding to the low-sensitivity region, thereby constituting the low-sensitivity region. The pen-type electronic device according to any one of the above (1) to (5).

[0064] (7) The pressure sensor has a piezoelectric film, a first electrode disposed on a first main surface of the piezoelectric film, a second electrode disposed on a second main surface of the piezoelectric film, and the piezoelectric film has a notch in a portion corresponding to the low-sensitivity region, thereby constituting the low-sensitivity region. The pen-type electronic device according to any one of the above (1) to (6).

[0065] (8) The pressure sensor is in a long shape and is wound around the pen shaft in a spiral shape. The pen-type electronic device according to any one of the above (1) to (7).

Explanation of Signs

[0066] 1: Pen-type electronic device 10: Pen shaft 20: Pressure sensor 30: Housing 50: Cushion material 51: Notch 70: Joining member 91: Spacer 101: Gripping portion 102: Central portion 201: First electrode 202: Piezoelectric film 203: Adhesive member 204: Second electrode 205: FPC 206: Third electrode 207: Cover

Claims

1. A cylindrical housing having a grip portion to be gripped by a user, a pen shaft housed inside the housing, a sheet-like pressure sensor wound around a position overlapping the grip portion on either the outer surface of the pen shaft or the inner surface of the housing, a cushioning material disposed between the pen shaft and the pressure sensor, or between the pressure sensor and the housing, comprising: The pressure sensor is a pen-type electronic device having a low-sensitivity region in a central portion along the long-axis direction of the pen shaft in the grip portion.

2. The low-sensitivity region is configured by the cushioning material having a thin portion or a notch at a portion corresponding to the low-sensitivity region, The pen-type electronic device according to claim 1.

3. comprising a joining member disposed between the pen shaft and the pressure sensor, or between the pressure sensor and the housing, The low-sensitivity region is configured by the joining member having a thin portion or a notch at a portion corresponding to the low-sensitivity region, The pen-type electronic device according to claim 1 or claim 2.

4. The pressure sensor, a piezoelectric film, a first electrode disposed on a first main surface of the piezoelectric film, a second electrode disposed on a second main surface of the piezoelectric film, having: The low-sensitivity region is configured by the first electrode or the second electrode having a notch at a portion corresponding to the low-sensitivity region, The pen-type electronic device according to claim 1 or claim 2.

5. The low-sensitivity region is configured by the pen shaft having a thin portion at a portion corresponding to the low-sensitivity region, The pen-type electronic device according to claim 1 or claim 2.

6. comprising a spacer disposed between the pen shaft and the pressure sensor, or between the pressure sensor and the housing, The low-sensitivity region is configured by the spacer having a thin portion or a notch at a portion corresponding to the low-sensitivity region, The pen-type electronic device according to claim 1 or claim 2.

7. The pressure sensor, a piezoelectric film, a first electrode disposed on a first main surface of the piezoelectric film, a second electrode disposed on a second main surface of the piezoelectric film, having: The low-sensitivity region is configured by the piezoelectric film having a notch at a portion corresponding to the low-sensitivity region, The pen-type electronic device according to claim 1 or claim 2.

8. The pressure sensor is in a long shape and is wound around the pen shaft in a spiral shape. The pen-type electronic device according to claim 1 or claim 2.

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