JP2008176800A - Coordinate-detecting device, and sheet for coordinate input panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coordinate-detecting device capable of detecting correct coordinate data on the entire contact surface on a coordinate input panel. <P>SOLUTION: The coordinate-detecting device of a voltage-detecting type generates coordinate data, on the basis of voltage values to be detected with a touch on the coordinate input panel constituted of an X-coordinate and a Y-coordinate. In the device, spacers 304 are arranged in the circumference of an upper sheet 300 and a lower sheet 302. The upper sheet 300 is adhered to the lower sheet 302 via the spacers 304 with the use of adhesive layers 305. In this case, the upper sheet 300 is disposed with tension and the upper sheet and the lower sheet oppose to each other at the predetermined gap. The upper sheet 300 and the lower sheet 302 are made to be electrically conductive when there is a touch on the coordinate input panel. One sheet detects the voltage values of the other sheet pad alternately. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a coordinate detection device and a coordinate input panel sheet used as input means such as a personal computer and a word processor, and in particular, a voltage value detected by touching a coordinate input panel composed of an X coordinate and a Y coordinate. The present invention relates to a voltage detection type coordinate detection apparatus and a coordinate input panel sheet that generate coordinate data based on the above.

  In recent years, information processing devices such as personal computers and word processors have improved their operation systems so that anyone can easily operate them, and coordinates that are easy-to-operate pointing devices that have been the mainstream means of inputting information It has changed to a detection device.

  In addition, there are an electromagnetic induction method, an electrostatic coupling method, a resistance film method, and the like as a coordinate detection device. However, in recent years, a resistance film method has been used because it has many advantages such as a simple configuration, low cost, and thinning. It is often done. The configuration of a conventional resistive film type coordinate detection apparatus and its processing operation will be described with reference to FIG.

  In FIG. 27, the conventional coordinate detection apparatus applies a voltage to the coordinate input panel 201 having a contact surface for a user of an information processing apparatus such as a personal computer or a word processor to operate as an input unit, The detection unit 202 detects the position of the contact point on the coordinate input panel 201, and a user such as an information processing apparatus operates the contact surface of the coordinate input panel 201 to output switching data and coordinate data.

  The coordinate input panel 201 that constitutes the coordinate detection apparatus has, for example, as shown in FIG. 46A, two resistive films 203 and 204 that face each other with a dot spacer 216 interposed therebetween. , 204 have a pair of electrodes 205, 206 and electrodes 207, 208 facing each other across an input range 215 in the central portion formed along the peripheral edge. In addition, in the resistance films 203 and 204 facing each other via the dot spacer 216, the electrodes 205 and 206, and the electrodes 207 and 208, which are formed respectively, are arranged so as to be orthogonal to each other, for example, parallel to the Y axis. The electrode 205 on the resistive film 203 is used for detecting the X coordinate, and the electrode 207 on the resistive film 204 parallel to the X axis is used for detecting the Y coordinate. In addition, the dot spacer 216 used in the conventional coordinate detection apparatus normally has at least one resistance as shown in FIG. 46B so that the two resistance films 203 and 204 are not short-circuited. A plurality of dot spacers 216 made of an insulator are disposed on the film 204.

  In addition, the detection unit 202 that constitutes the coordinate detection apparatus applies voltages between the transistors 209 and 210 that apply a voltage between the electrodes 205 and 206 on the resistance film 203 and between the electrodes 207 and 208 on the conductive film 204. A voltage is applied to the resistance film 203 and the resistance film 204 by alternately turning on the transistors 209 and 210 and the transistors 211 and 212 one by one.

  The detection unit 202 further includes a control unit 213 that controls the transistors 209, 210, 211, and 212, and a voltage detection unit 214 that detects a voltage value corresponding to the pressed position of the coordinate input panel 201. The coordinates of the pressed position are detected. In the coordinate detection apparatus configured as described above, when one point of the coordinate input panel 201 is pressed, the two resistance films 203 and 204 come into contact with each other at the pressed contact point. At this time, if a voltage is applied to the electrodes 205 and 206, the voltage is divided at the contact point, and a voltage indicating the Y coordinate is output via the electrode 207. When a voltage is applied to the electrodes 207 and 208, the voltage is divided at the contact point, and a voltage indicating the X coordinate is output via the electrode 205.

  After detecting the voltage indicating the X coordinate and the voltage indicating the Y coordinate, the voltage detection unit 214 transmits the received voltage value to the control unit 213, and the control unit 213 determines the coordinate data of the contact point based on the voltage value. Or generate and output switching data. In addition, the conventional coordinate detection apparatus is configured such that even when the resistance films 203 and 204 are deflected due to factors such as thermal stress, the opposing resistance films 203 and 207 are arranged by the dot spacers 216 arranged at appropriate intervals. The resistance films 203 and 204 are in contact with each other only when the contact surface of the coordinate input panel 201 is pressed without contact.

  However, in the conventional coordinate detection apparatus, since the dot spacer made of an insulator is disposed between the opposing resistance films (see FIG. 47A), for example, it corresponds to just above or near the dot spacer. When the contact surface of the coordinate input panel is pressed, the resistance film contacts so as to avoid the dot spacer (see FIG. 47B), and the detected coordinate data becomes unstable.

  In order to avoid such problems and improve operability, it is necessary to increase the distance between the dod spacers, to reduce the dod spacers themselves, and to reduce the height of the dod spacers. However, if the operability is improved by changing the shape of the dod spacer as described above, the distance between the resistance films may be narrowed due to distortion or warpage of the resistance film, and short circuit may occur.

  Moreover, in the conventional coordinate detection apparatus, since the resistance film is adhered by an adhesive layer of about several tens of μm, a step is caused by a pattern existing in the adhesion part or the surface roughness of the resist layer is caused by the adhesive layer. It was not completely filled, and a gap occurred in the sticking part. For this reason, when the operation area is pressed with a relatively large area, air existing between the upper sheet and the lower sheet escapes into the outside air from the gap, and a sufficient amount of air does not immediately flow even after the pressing is released thereafter. For this reason, there is a problem that the upper sheet and the lower sheet remain adhered to each other.

  Therefore, the present invention provides a coordinate detection device and a coordinate input panel sheet that can detect accurate coordinate data on all contact surfaces on the coordinate input panel.

  Therefore, in order to solve the above-described problem, the coordinate detection apparatus of the present invention is a voltage detection type that generates coordinate data based on a voltage value detected by touching a coordinate input panel composed of an X coordinate and a Y coordinate. In the coordinate detection apparatus, the coordinate input panel sheet is configured such that the upper sheet is stretched over the lower sheet via a spacer formed in the peripheral portion, and the upper sheet and the lower sheet face each other with a predetermined distance therebetween. (Invention according to Claim 18). Then, by contacting the coordinate input panel having such an upper sheet and a lower sheet, the upper sheet and the lower sheet are electrically connected, and one sheet alternately detects the voltage value of the other sheet. (Invention according to claim 1).

  The coordinate detection apparatus according to the present invention is different from the conventional one in which a dod spacer made of an insulator is disposed between the opposing upper sheet and lower sheet (between the resistive films). By being attached (attached in a stretched state), the upper sheet and the lower sheet are opposed to each other with a predetermined distance therebetween. Only when the coordinate input panel is pressed, the resistance films of the upper sheet and the lower sheet come into contact with each other, and when the contact is released, they again face each other at a predetermined interval due to the tension of the upper sheet. Even if the upper sheet is deformed such as distortion due to a change with time when the coordinate detection apparatus is used, the predetermined distance between the upper sheet and the lower sheet is maintained because the upper sheet is stretched.

  Therefore, in the coordinate detection device of the present invention, there is no conventional problem that the coordinate data detected by the contact of the resistance film so as to avoid the dod spacer is unstable, and on all contact surfaces on the coordinate input panel, Accurate coordinate data can be detected. Further, there is no possibility that a short circuit occurs even if the sheet is deformed due to a change with time when the coordinate detection apparatus is used.

  Further, a coordinate detection device according to the present invention is a voltage detection type coordinate detection device that generates coordinate data based on a voltage value detected by contacting a coordinate input panel composed of an X coordinate and a Y coordinate. The coordinate input panel has a configuration in which an upper sheet is stretched on a mounting housing of the coordinate detection device, and the upper sheet and the lower sheet are opposed to each other with a predetermined distance therebetween. The sheet and the lower sheet are electrically connected, and one sheet alternately detects the voltage value of the other sheet (the invention according to claim 2).

  The coordinate detection apparatus according to the present invention is different from the conventional one in which a dod spacer made of an insulator is disposed between the upper sheet and the lower sheet (between the resistive films) opposed to each other. The upper sheet and the lower sheet are opposed to each other with a predetermined distance therebetween, which is stretched on the mounting housing of the apparatus. Only when the coordinate input panel is pressed, the upper and lower sheet resistance films come into contact with each other. When the contact is released, the upper sheet and the lower sheet again face each other with a predetermined distance therebetween. Even if the upper sheet is deformed such as distortion due to a change with time when the coordinate detection apparatus is used, the predetermined distance between the upper sheet and the lower sheet is maintained because the upper sheet is stretched.

  Therefore, in the coordinate detection device of the present invention, there is no conventional problem that the coordinate data detected by the contact of the resistance film so as to avoid the dod spacer is unstable, and on all contact surfaces on the coordinate input panel, Accurate coordinate data can be detected. Further, there is no possibility that a short circuit occurs even if the sheet is deformed due to a change with time when the coordinate detection apparatus is used.

  Further, the coordinate detection apparatus according to the present invention has an upper sheet attached to a guide pin standing on a mounting substrate on which a lower sheet is attached, and the upper sheet and the lower sheet are arranged in place of the above-described mounting housing. The effect of the present invention can also be obtained by a configuration that is opposed to each other with a predetermined interval (the invention according to claim 3). Further, a coordinate detection device according to the present invention is a voltage detection type coordinate detection device that generates coordinate data based on a voltage value detected by contacting a coordinate input panel composed of an X coordinate and a Y coordinate. The sheet of the coordinate input panel panel is configured such that the center portion of the upper sheet is bent upward, and the upper sheet and the lower sheet face each other with a predetermined distance therebetween. ). Then, by contacting the coordinate input panel having such an upper sheet and a lower sheet, the upper sheet and the lower sheet are electrically connected, and one sheet alternately detects the voltage value of the other sheet. It is characterized (invention according to claim 4).

  The coordinate detection device according to the present invention is different from the conventional one in which a dod spacer made of an insulator is disposed between an upper sheet and a lower sheet facing each other, and the center portion of the upper sheet is normally bent upward. Therefore, they face each other at a predetermined interval. Then, only when the coordinate input panel is pressed, the upper and lower sheet resistance films come into contact with each other, and when the contact is released, they again face each other at a predetermined interval by the restoring force of the upper sheet. In addition, even if the upper sheet is deformed due to changes over time when using the coordinate detection device, the center portion of the upper sheet is bent upward, so that a predetermined interval between the upper sheet and the lower sheet is obtained. Is maintained.

  Therefore, in the coordinate detection device of the present invention, there is no conventional problem that the coordinate data detected by the contact of the resistance film so as to avoid the dod spacer is unstable, and on all contact surfaces on the coordinate input panel, Accurate coordinate data can be detected. Further, there is no possibility that a short circuit occurs even if the sheet is deformed due to a change with time when the coordinate detection apparatus is used.

  In this way, as a specific configuration in which the center portion of the upper sheet is bent upward, a protective sheet is attached to the upper surface of the upper sheet while the upper sheet is stretched, and the upper sheet The center portion of the upper sheet can be bent upward (invention according to claim 5). Further, as another specific configuration, the double-sided adhesive tape is stuck on the lower surface of the protective sheet, and the double-sided adhesive tape contracts so that the central portion of the protective sheet faces upward. A double-sided adhesive tape that is bent and the protective sheet is attached to the upper surface of the upper sheet may be attached so that the central portion of the upper sheet is bent upward. 6).

  As still another specific configuration, the upper sheet can be molded so that the central portion is bent outward (invention according to claim 7). Further, as another specific configuration, the protective sheet is molded so that the central portion is bent, and the protective sheet is attached to the upper surface of the upper sheet with the curved surface facing upward. The central portion of the upper sheet can be bent upward (invention according to claim 8).

  As another specific configuration, the upper sheet is configured as a multilayer sheet formed of a plurality of layers having different coefficients of thermal expansion, and the central portion of the upper sheet is bent upward at the operating temperature. (Invention according to claim 9). For this purpose, for example, a material having a higher thermal expansion coefficient than that of the lower layer side is used for the upper layer side of the upper sheet, and after bonding each layer in a low temperature atmosphere, the upper layer side expands by allowing to stand at the room temperature. The center portion of the upper sheet is bent upward.

  As another specific configuration, the upper sheet is configured as a multilayer sheet formed of a plurality of layers having different thermal shrinkage rates, and the central portion of the upper sheet is bent upward at the operating temperature. (Invention according to claim 10). For this purpose, after bonding a material having a higher thermal shrinkage than the upper layer side to the lower layer side of the upper sheet, and holding it for a predetermined time in a high temperature atmosphere, the lower layer side is heated and shrunk so that the central portion of the upper sheet faces upward. Will be folded.

  Further, as another specific configuration, a protective sheet having a coefficient of thermal expansion different from that of the upper sheet is attached to the upper sheet so that the central portion of the upper sheet is bent upward at the use temperature. (Invention according to claim 11). For this purpose, a protective sheet material having a smaller coefficient of thermal expansion than the upper sheet is used for the upper surface of the upper sheet, and the protective sheet is bonded to the upper surface of the upper sheet in a high temperature atmosphere, and then cooled to the operating temperature. As a result, the upper sheet contracts and the center portion of the upper sheet is bent upward.

  Further, as another specific configuration, a protective sheet formed of a plurality of layers having different thermal shrinkage rates is attached to the upper sheet, and the central portion of the upper sheet is bent upward at the operating temperature. (Invention according to claim 12). For this purpose, an upper protective sheet having a lower thermal shrinkage than the lower protective layer is laminated on the upper surface of the lower protective sheet, and then the lower protective sheet is heated by holding it in a high temperature atmosphere for a predetermined time. Since the center portion of the protective sheet is bent upward, the upper sheet is adhered to the lower surface of the protective sheet so that the central portion of the upper sheet is directed upward in accordance with the shape of the protective sheet. Folded.

  Further, the coordinate detection device according to the present invention can obtain the effect of the present invention even if the center portion of the lower sheet is bent downward instead of the above upper sheet. invention). As a specific configuration thereof, the lower surface of the lower sheet is attached to a mounting substrate whose central portion is bent downward, and the central portion of the lower sheet is bent downward. (Invention according to claim 14). As another specific configuration, the lower sheet is attached to the mounting substrate via an adhesive layer formed in a frame shape on the lower surface of the lower sheet, and the central portion of the lower sheet is positioned below (The invention according to claim 15).

  Further, a coordinate detection device according to the present invention is a voltage detection type coordinate detection device that generates coordinate data based on a voltage value detected by contacting a coordinate input panel composed of an X coordinate and a Y coordinate. The coordinate input panel has an upper sheet and a lower sheet facing each other at a predetermined interval, and a mounting board is attached to a lower surface of the lower sheet, and the upper sheet and the lower sheet are attached to the lower sheet and the mounting board. A communication hole is formed for communicating between the space formed between and the outside air, and is configured such that air flows between the space and the outside air according to the pressing state of the coordinate input panel, By contacting the coordinate input panel, the upper sheet and the lower sheet are electrically connected, and one sheet detects the voltage value of the other sheet alternately (the invention according to claim 16).

  The coordinate detection device according to the present invention is difficult to freely circulate between the space formed between the upper sheet and the lower sheet and the outside air according to the pressed state of the coordinate input panel. Unlike the conventional case where the upper sheet and the lower sheet remain attached because a sufficient amount of air does not flow immediately even if the release is released, the mounting board is attached to the lower surface of the lower sheet The lower sheet and the mounting substrate are formed with a communication hole for communicating the space formed between the upper sheet and the lower sheet and the outside air, and the space and the outside air are connected according to the pressing state of the coordinate input panel. It is comprised so that air may circulate between them. For this reason, when the contact is released, the upper sheet and the lower sheet immediately face each other at a predetermined interval again due to the repulsive force on the lower sheet side by the magnetic force or tension.

  Therefore, in the coordinate detection device of the present invention, there is no conventional problem that the detected coordinate data becomes unstable due to the upper sheet and the lower sheet remaining stuck to each other even when the pressure is released. Accurate coordinate data can be detected on all the contact surfaces. In addition, the coordinate detection device according to the present invention has a frame-like thick film adhesive layer in place of the above-described configuration in which the communication hole for communicating the space and the outside air is formed. And a space formed between the upper sheet and the lower sheet when the coordinate input panel is pressed. Therefore, there is no conventional problem that the coordinate data detected by the upper sheet and the lower sheet remain in contact with each other even when the pressure is released, and the detected coordinate data becomes unstable. The effect of the invention can be obtained (the invention according to claim 17).

  Examples of the present invention will be described below.

  Hereinafter, a coordinate detection device and a coordinate input panel sheet of the present invention will be described with reference to the drawings. As shown in FIG. 27, the coordinate detection apparatus of the present invention includes a coordinate input panel 201 having a contact surface for a user of an information processing apparatus such as a personal computer or a word processor to operate as input means, and a voltage applied to the coordinate input panel 201. Is applied to the coordinate input panel 201 and the position of the contact point on the coordinate input panel 201 is detected. The switching data and the coordinate data are obtained when the user of the information processing device or the like operates the contact surface of the coordinate input panel 201. Is output.

  The coordinate input panel 201 that constitutes the coordinate detection device has, for example, two resistive films 203 and 204 that are opposed to each other at a predetermined interval by the repulsive force of the same magnetic pole, and the resistive films 203 and 204 are respectively arranged on the peripheral portion. A pair of electrodes 205, 206 and electrodes 207, 208 facing each other across an input range 215 at the center formed along the center are provided. Further, in the resistance films 203 and 204 facing each other through a gap due to the repulsive force of the same magnetic pole, the electrode 205 and the electrode 206 and the electrode 207 and the electrode 208 that are formed respectively are arranged so as to be orthogonal to each other. The electrode 205 on the resistance film 203 parallel to the Y axis is used for detection of the X coordinate, and the electrode 207 on the resistance film 204 parallel to the X axis is used for detection of the Y coordinate.

  In addition, the detection unit 202 that constitutes the coordinate detection apparatus of the present invention includes a transistor 209 and 210 that applies a voltage between the electrodes 205 and 206 on the resistance film 203, and an electrode 207 and 208 on the conductor film 204. A voltage is applied to the resistance film 203 and the resistance film 204 by alternately turning on the transistors 209 and 210 and the transistors 211 and 212 one by one.

  The detection unit 202 further includes a control unit 213 that controls the transistors 209, 210, 211, and 212, and a voltage detection unit 214 that detects a voltage value corresponding to the pressed position of the coordinate input panel 201. The coordinates of the pressed position are detected. In the coordinate detection apparatus of the present invention configured as described above, when one point of the coordinate input panel 201 is pressed, the two resistive films 203 and 204 come into contact with each other at the pressed contact point. At this time, if a voltage is applied to the electrodes 205 and 206, the voltage is divided at the contact point, and a voltage indicating the Y coordinate is output via the electrode 207. When a voltage is applied to the electrodes 207 and 208, the voltage is divided at the contact point, and a voltage indicating the X coordinate is output via the electrode 205.

  After detecting the voltage indicating the X coordinate and the voltage indicating the Y coordinate, the voltage detection unit 214 transmits the received voltage value to the control unit 213, and the control unit 213 determines the coordinate data of the contact point based on the voltage value. Or generate and output switching data. Further, the coordinate detection device of the present invention makes contact between the opposing resistance films 203 and 204 by the repulsive force of the same magnetic pole even when the resistance films 203 and 204 are bent due to factors such as thermal stress. Instead, the resistance films 203 and 204 are in contact with each other only when the contact surface of the coordinate input panel 201 is pressed.

  FIG. 1 shows a principle configuration of a coordinate input panel of a coordinate detection apparatus of the present invention. The coordinate input panel of the coordinate detection apparatus coordinates of the present invention is a dot formed of an insulator between the upper sheet 1 and the lower sheet 2 facing each other (between the resistance film 3 and the resistance film 4). No spacer is disposed, and, for example, as shown in FIG. 1A, the spacers are opposed to each other at a predetermined interval due to the repulsive force of the same magnetic pole (in this case, the S pole and the S pole). Then, only when the contact surface 5 of the coordinate input panel is pressed by a user such as an information processing apparatus, the resistance films of the upper sheet 1 and the lower sheet 2 are in contact with each other as shown in FIG. When released, they face each other again at a predetermined interval due to the repulsive force of the same magnetic pole. In FIG. 1, the predetermined distance between the resistance films is maintained by the repulsive force between the S pole and the S pole, but this is the same as the repulsive force between the N pole and the N pole.

  Therefore, in the coordinate detection device of the present invention, the coordinate data to be detected does not become unstable due to the contact of the resistance film so as to avoid the dot spacer as in the prior art (see FIG. 47B). Thus, accurate coordinate data can be detected on all the operation surfaces 5 on the coordinate input panel. FIG. 2 shows a first reference example of a coordinate input panel used in the coordinate detection apparatus of the present invention.

  In this reference example, the upper sheet 1a uses a PET film 6 as a base material, and on one side of the PET film 6, a magnetic printing layer 8 that uniformly screen-prints a paste in which a hard magnetic material is dispersed; The resistance film 3 is formed on the surface, and an electrode pattern and a wiring pattern (not shown) are stacked. Similarly, the lower sheet 2a uses a PET film 7 as a base material, and a magnetic printing layer 9 for uniformly screen-printing a paste in which a hard magnetic material is dispersed on one side of the PET film 7, and further its surface The electrode film and the wiring pattern are stacked, although not shown, with the resistance film 4.

  Further, the periphery of these is coated with a resist. For example, after magnetizing in the thickness direction so that the resistance film forming surface side of the magnetic printing layers 8 and 9 becomes the same magnetic pole of N pole or S pole, the resistance film surface of each sheet Are attached so as to be opposed to each other with the same magnetic pole, and are attached to the mounting substrate 11 by being attached to the periphery. In addition, in order to protect the upper sheet 1a and improve the operation feeling, a protective sheet 10 is attached to the operation surface 5 side of the upper sheet 1a.

  In the coordinate input panel configured as shown in FIG. 2, in the upper sheet 1a and the lower sheet 2a, since repulsive force works due to the repulsive force of the same magnetic pole, there is no contact when the coordinate input panel is not pressed, There will be no problems due to unintended shorts. Further, when the user presses the coordinate input panel, there is no insulator such as a dot spacer between the resistive films, so that accurate coordinate data can be obtained.

  FIG. 3 shows a second reference example of the coordinate input panel used in the coordinate detection apparatus of the present invention. In this reference example, the upper sheet 1b uses a PET film 6 as a base material, and a resistance film (magnetic powder dispersion) obtained by mixing a hard film powder with a resistance film printing paste on one side of the PET film 6. The resistor film 15) is printed, and an electrode pattern and a wiring pattern are laminated on the surface, though not shown. Similarly, the lower sheet 2b uses a PET film 7 as a base material, and a resistance film (magnetic powder dispersion resistance) is formed by mixing a hard magnetic material powder into a resistance film printing paste on one side of the PET film 7. The film 16) is printed, and an electrode pattern and a wiring pattern are laminated on the surface, though not shown.

  Further, these are coated with a resist, for example, after magnetizing in the thickness direction so that the surface side of the magnetic powder dispersion resistance films 15 and 16 becomes the same magnetic pole of N pole or S pole, the resistance film forming surface of each sheet is formed. They are attached to the mounting substrate 11 by overlapping them so that they face each other at the same magnetic pole. In addition, in order to protect the upper sheet 1b and improve the operation feeling, a protective sheet 10 is attached to the operation surface 5 side of the upper sheet 1b.

  In the coordinate input panel configured as shown in FIG. 3, in the upper sheet 1b and the lower sheet 2b, since repulsive force works due to the repulsive force of the same magnetic pole, there is no contact when the coordinate input panel is not pressed, There will be no problems due to unintended shorts. Further, when the user presses the coordinate input panel, there is no insulator such as a dot spacer between the magnetic powder dispersed resistance films, so that accurate coordinate data can be obtained.

  FIG. 4 shows a third reference example of the coordinate input panel used in the coordinate detection apparatus of the present invention. In this reference example, the upper sheet 1c uses a PET film 6 as a base material, and a hard magnetic thin film 21 is formed on one surface of the PET film 6 by vapor deposition in a magnetic field, sputtering in a magnetic field, etc., and a resistance film is further formed on the surface. 3. Although not shown, the electrode pattern and the wiring pattern are stacked. Similarly, the lower sheet 2c uses the PET film 7 as a base material, a hard magnetic thin film 22 is formed on one surface of the PET film 7 by vapor deposition in a magnetic field, sputtering in a magnetic field, and the like, and the resistance film 4 is further formed on the surface. Although not shown, an electrode pattern and a wiring pattern are stacked.

  Further, these are coated with a resist, for example, after being magnetized in the thickness direction so that the resistance film forming surface side becomes the same magnetic pole of the N pole or the S pole, the resistance film forming surfaces of the sheets face each other with the same magnetic pole. In this manner, the surroundings are superposed and attached to the mounting substrate 11. In addition, in order to protect the upper sheet | seat 1c and to improve an operation feeling, the protective sheet 10 is affixed on the operation surface 5 side of the upper sheet | seat 1c.

  In the coordinate input panel configured as shown in FIG. 4, in the upper sheet 1c and the lower sheet 2c, since repulsive force works due to the repulsive force of the same magnetic pole, there is no contact when the coordinate input panel is not pressed, There will be no problems due to unintended shorts. Further, when the user presses the coordinate input panel, there is no insulator such as a dot spacer between the resistive films, so that accurate coordinate data can be obtained.

  FIG. 5 shows a fourth reference example of the coordinate input panel used in the coordinate detection apparatus of the present invention. In this reference example, the upper sheet 1d uses a film (magnetic powder dispersion film 25) in which powder of a hard magnetic material is mixed as a base material, and a resistive film 3 and an illustration are provided on one side of the magnetic powder dispersion film 25. Although not shown, the electrode pattern and the wiring pattern are stacked. Similarly, the lower sheet 2d uses a film (magnetic powder dispersion film 26) mixed with powder of a hard magnetic material as a base material, and the resistive film 4 and one side of the magnetic powder dispersion film 26 are illustrated. Although not shown, the electrode pattern and the wiring pattern are stacked.

  Further, these are coated with a resist, for example, after being magnetized in the thickness direction so that the resistance film forming surface side becomes the same magnetic pole of the N pole or the S pole, the resistance film forming surfaces of the sheets face each other with the same magnetic pole. In this manner, the surroundings are superposed and attached to the mounting substrate 11. In addition, in order to protect the upper sheet 1d and improve the operation feeling, a protective sheet 10 is attached to the operation surface 5 side of the upper sheet 1d.

  In the coordinate input panel configured as shown in FIG. 5, in the upper sheet 1d and the lower sheet 2d, since repulsive force works due to the repulsive force of the same magnetic pole, there is no contact when the coordinate input panel is not pressed, There will be no problems due to unintended shorts. Further, when the user presses the coordinate input panel, there is no insulator such as a dot spacer between the resistive films, so that accurate coordinate data can be obtained.

  FIG. 6 shows a fifth reference example of the coordinate input panel used in the coordinate detection apparatus of the present invention. In this reference example, the upper sheet 1e uses the PET film 6 as a base material, and on one side of the PET film 6 is formed a magnetic printing layer 8 for uniformly screen printing a paste in which a hard magnetic material is dispersed, Further, a resistance film 3 is formed on the back surface, and an electrode pattern and a wiring pattern (not shown) are laminated. Further, the lower sheet 2e is formed on the magnetic printing layer 9 of the mounting substrate 11 on which the paste in which the hard magnetic material is dispersed is uniformly screen-printed, and further, the PET film 7 and the resistive film 4 are illustrated on the surface thereof. Although not shown, the electrode pattern and the wiring pattern are stacked.

  Further, for example, after the resistance film forming surface side of the upper sheet 1e and the resistance film forming surface side of the mounting substrate 11 are magnetized in the thickness direction so as to be the same magnetic pole of N pole or S pole, each resistance film It is attached to the mounting substrate 11 with the surroundings being overlapped so that the formation surfaces face each other at the same magnetic pole and pasted. In addition, in order to protect the upper sheet 1e and improve the operation feeling, a protective sheet 10 is attached to the operation surface 5 side of the upper sheet 1e.

  In the coordinate input panel configured as shown in FIG. 6, the upper sheet 1e and the lower sheet 2e on the mounting substrate 11 are repulsive due to the repulsive force of the same magnetic pole. And there will be no problems due to unintended shorts. Further, when the user presses the coordinate input panel, there is no insulator such as a dot spacer between the resistive films, so that accurate coordinate data can be obtained.

  FIG. 7 shows a sixth reference example of the coordinate input panel used in the coordinate detection apparatus of the present invention. In this reference example, the upper sheet 1f uses the PET film 6 as a base material, and forms a film (magnetic powder-dispersed film 31) in which powder of a hard magnetic material is mixed on one side of the PET film 6, A resistance film 3 is formed on the back surface, and an electrode pattern and a wiring pattern (not shown) are stacked. The lower sheet 2f is formed on a mounting substrate 32 (compound magnet) mixed with powder of a hard magnetic material, and further has a PET film 7 and a resistance film 4 on its surface, and an electrode pattern (not shown). The wiring pattern is laminated. The compound magnet is a material formed by mixing hard magnetic powder with rubber, plastic or the like.

  Further, for example, after the resistance film forming surface side of the upper sheet 1f and the resistance film forming surface side on the mounting substrate 11 are magnetized in the thickness direction so as to be the same magnetic pole of N pole or S pole, each resistance film It is attached to the mounting substrate 11 with the surroundings being overlapped so that the formation surfaces face each other at the same magnetic pole and pasted. In this embodiment, the magnetic powder-dispersed film 31 is used as a protective sheet for protecting the upper sheet 1f and improving the operational feeling.

  In the coordinate input panel configured as shown in FIG. 7, the upper sheet 1f and the lower sheet 2f on the mounting substrate 11 are repulsive due to the repulsive force of the same magnetic pole. And there will be no problems due to unintended shorts. Further, when the user presses the coordinate input panel, there is no insulator such as a dot spacer between the resistive films, so that accurate coordinate data can be obtained.

  As described above, in the first to sixth reference examples, as shown in FIG. 1A, in normal times, they are opposed at a predetermined interval by the repulsive force of the same magnetic pole (S pole and S pole, N pole and N pole). is doing. And only when the contact surface 5 of the coordinate input panel is pressed by a user such as an information processing apparatus, when the resistance films of the upper sheet and the lower sheet come into contact as shown in FIG. Again, they face each other at a predetermined interval due to the repulsive force of the same magnetic pole.

However, in the coordinate detection apparatus (first to sixth embodiments) based on the principle of FIG. 1, the magnetic pole area of one surface magnetized in the thickness direction for each sheet is large, and a very thin film magnet is obtained. In particular, in the vicinity of the center when the area of the film magnet is large, a strong magnetic field may not be generated so as to obtain an effective repulsive force. For example, in the case of a cylindrical magnet as shown in FIG. 12, the magnetic field strength (magnetic flux density B) on the central axis is B = (Br / 2) × [(L + X) ÷ {√ (R2 + (L + X) 2) } -X ÷ {√ (R 2 + X 2)}]
As can be seen from this equation, the larger the radius R and the smaller the thickness L, the smaller the generated magnetic field. That is, the magnetic field generated by a magnet that is thin and has a large magnetic pole area is also small in a quadrangular columnar magnet.

  Therefore, as shown in the principle diagrams of FIGS. 8 and 9, the dispersed film magnet pattern is formed at the symmetrical position of the upper sheet 1 and the lower sheet 2, and the opposing surfaces have the same magnetic pole. (See FIG. 8), or magnetized in the lateral direction (see FIG. 9). That is, instead of forming a film magnet as a solid film on the entire surface of each sheet as shown in FIG. 1, coordinate detection is performed by forming a pattern that forms a plurality of film magnets as shown in FIG. 8 or FIG. The device can obtain a larger magnetic field than the membrane magnet of FIG. In FIG. 8, the predetermined distance between the resistive films is maintained by the repulsive force of the S pole and the S pole, but this is the same as the repulsive force of the N pole and the N pole.

  Next, a reference example of the coordinate input panel of the present invention to which the principle of FIG. 8 or FIG. 9 is applied will be described based on the drawings. FIG. 10 shows a seventh reference example of the coordinate input panel used in the coordinate detection apparatus of the present invention. In this reference example, the upper sheet 1g uses a PET film 6 as a base material, and a plurality of film-like magnets (printed film magnets 35) are printed on one side of the PET film 6 at a predetermined interval. Alternatively, the resistance film 3 and an electrode pattern and a wiring pattern (not shown) are laminated on the back surface (in FIG. 10, for convenience, laminated on the back surface). Similarly, the lower sheet 2g uses the PET film 7 as a base material, and a plurality of film-like magnets (printed film magnets 36) are printed on one side of the PET film 7 at a predetermined interval. The resistance film 4 is laminated on the back surface (in FIG. 10, for convenience, laminated on the back surface), and an electrode pattern and a wiring pattern (not shown) are laminated.

  Further, these are coated with a resist, for example, after being magnetized in the thickness direction so that the resistance film forming surface side becomes the same magnetic pole of the N pole or the S pole, the resistance film forming surfaces of the sheets face each other with the same magnetic pole. In this manner, the surroundings are superposed and attached to the mounting substrate 11. In addition, in order to protect the upper sheet 1g and improve the operational feeling, a protective sheet 10 is attached to the operation surface 5 side of the upper sheet 1g.

  In the coordinate input panel configured as shown in FIG. 10, in the upper sheet 1g and the lower sheet 2g, since repulsive force works due to the repulsive force of the same magnetic pole, there is no contact when the coordinate input panel is not pressed, There will be no problems due to unintended shorts. Further, when the user presses the coordinate input panel, there is no insulator such as a dot spacer between the resistive films, so that accurate coordinate data can be obtained.

  FIG. 11 shows an eighth reference example of the coordinate input panel used in the coordinate detection apparatus of the present invention. In this reference example, the upper sheet 1h uses a PET film 6 as a base material, and a plurality of film-like magnets (printed film magnets 41) are printed on one side of the PET film 6 at a predetermined interval. Alternatively, the resistive film 3 and an electrode pattern and a wiring pattern (not shown) are laminated on the back surface (in FIG. 11, for convenience, laminated on the back surface). Similarly, the lower sheet 2h uses the PET film 7 as a base material, and a plurality of film-like magnets (printed film magnets 42) are printed on one side of the PET film 7 at a predetermined interval, and the surface, or The resistance film 4 is laminated on the back surface (in FIG. 11, for convenience, laminated on the back surface), and an electrode pattern and a wiring pattern (not shown) are laminated.

  Furthermore, the periphery of these is resist-coated. For example, after the magnetic film is laterally magnetized so that the resistance film forming surface side is the same magnetic pole of the N pole and the S pole, the resistance film forming surfaces of the sheets face each other with the same magnetic pole. In this manner, the surroundings are superposed and attached to the mounting substrate 11. In addition, in order to protect the upper sheet 1h and improve the operation feeling, a protective sheet 10 is attached to the operation surface 5 side of the upper sheet 1h.

  In the coordinate input panel configured as shown in FIG. 11, in the upper sheet 1h and the lower sheet 2h, since repulsive force works due to the repulsive force of the same magnetic pole, there is no contact when the coordinate input panel is not pressed, There will be no problems due to unintended shorts. Further, when the user presses the coordinate input panel, there is no insulator such as a dot spacer between the resistive films, so that accurate coordinate data can be obtained.

  As described above, the seventh and eighth reference examples can obtain a larger magnetic field than the solid-film film magnet of FIG. 1 by forming a pattern that forms a plurality of film magnets. Here, a method of obtaining a magnetic field larger than that of the solid film magnet of FIG. 1 by a method other than the seventh and eighth reference examples will be described.

  For example, as shown in the principle diagrams of FIGS. 13 and 14, a film magnet pattern is formed at a symmetrical position near the center of the operation area of the upper sheet 1 and the lower sheet 2 so that the opposing surfaces have the same magnetic pole. Magnetization is performed in the thickness direction (see FIG. 13) or in the lateral direction (see FIG. 14). In FIG. 13, the predetermined distance between the resistance films is maintained by the repulsive force between the S pole and the S pole, but this is the same as the repulsive force between the N pole and the N pole.

  Next, a reference example of the coordinate input panel of the present invention to which the principle of FIG. 13 or FIG. 14 is applied will be described based on the drawings. FIG. 15 shows a ninth reference example of the coordinate input panel used in the coordinate detection apparatus of the present invention. In this reference example, the upper sheet 1i uses the PET film 6 as a base material, prints a film-like magnet (printed film magnet 51) near the center of the operation area on one side of the PET film 6, Alternatively, the resistive film 3 and an electrode pattern and a wiring pattern (not shown) are laminated on the back surface (in FIG. 15, for convenience, laminated on the back surface). Similarly, the lower sheet 1i uses the PET film 7 as a base material, and prints a film-like magnet (printed film magnet 52) near the center of the operation area on one side of the PET film 7, and further, the surface thereof, or The resistive film 4 and electrode patterns and wiring patterns (not shown) are laminated on the back surface (in FIG. 15, for convenience, laminated on the back surface).

  Further, the periphery of these is resist-coated, for example, after magnetizing in the thickness direction so that the resistance film forming surface side is the same magnetic pole of the N pole or the S pole, the resistance film forming surface of each sheet has the fixing portion 45. It is attached to the mounting substrate 11 by being overlapped and pasted so as to face each other with the same magnetic pole. In addition, in order to protect the upper sheet 1i and improve the operational feeling, a protective sheet 10 is attached to the operation surface 5 side of the upper sheet 1i.

  In the coordinate input panel configured as shown in FIG. 15, in the upper sheet 1i and the lower sheet 2i, since repulsive force works due to the repulsive force of the same magnetic pole, there is no contact when the coordinate input panel is not pressed, There will be no problems due to unintended shorts. Further, when the user presses the coordinate input panel, there is no insulator such as a dot spacer between the resistive films, so that accurate coordinate data can be obtained.

  FIG. 16 shows a tenth reference example of the coordinate input panel used in the coordinate detection apparatus of the present invention. This reference example also basically has the same configuration as the ninth reference example, but there are some differences. The upper sheet 1i uses the PET film 6 as a base material, and a plurality of film-like magnets are printed near the center of the operation area on one side of the PET film 6 (printed film magnets 54, 55, 56, 57). The resistive film 3 and electrode patterns and wiring patterns (not shown) are laminated on the front surface or the back surface. Similarly, the lower sheet 1i uses the PET film 7 as a base material, and a plurality of film-like magnets are printed near the center of the operation area on one side of the PET film 7 (printed film magnets 54, 55, 56, 57). In addition, the resistive film 4 and electrode patterns and wiring patterns (not shown) are laminated on the front surface or the back surface.

  Further, these are coated with a resist, for example, after being magnetized in the lateral direction so that the resistance film forming surface side is the same magnetic pole of N pole or S pole (printed film magnets 54, 55, 56, 57 of FIG. 16). And the periphery of the sheet is attached to the mounting substrate 11 so that the resistance film forming surfaces of the sheets face each other with the same magnetic pole across the fixing portion 45.

  In the coordinate input panel configured as shown in FIG. 16, in the upper sheet 1i and the lower sheet 2i, repulsive force works due to the repulsive force of the same magnetic pole, so there is no contact when the coordinate input panel is not pressed, There will be no problems due to unintended shorts. Further, when the user presses the coordinate input panel, there is no insulator such as a dot spacer between the resistive films, so that accurate coordinate data can be obtained.

  FIG. 17 shows an eleventh reference example of the coordinate input panel used in the coordinate detection apparatus of the present invention. In this reference example, the upper sheet 1j uses the PET film 6 as a base material, prints a film-like magnet (printed film magnet 51) near the center of the operation area on one side of the PET film 6, Alternatively, the resistive film 3 and electrode patterns and wiring patterns (not shown) are laminated on the back surface (in FIG. 17, for convenience, laminated on the back surface). In addition, the lower sheet 1j uses a PET film 6 as a base material, and has a structure in which a resistance film 4 and electrode patterns and wiring patterns (not shown) are laminated on one surface of the PET film 6 on the mounting substrate 11. Has a permanent magnet 61 mounted near the center of the operation area of the coordinate input panel.

  Further, the periphery of these is resist-coated, and for example, the printed film magnet 51 is magnetized in the thickness direction so that the resistance film forming surface side of the printed film magnet 51 and the permanent magnet 61 are the same magnetic pole of N or S pole. After that, the sheets are stacked and attached to the mounting substrate 11 so that the sheets face each other with the same magnetic pole across the fixing portion 45. In addition, in order to protect the upper sheet 1j and improve the operation feeling, a protective sheet 10 is attached to the operation surface 5 side of the upper sheet 1j.

  In the coordinate input panel configured as shown in FIG. 17, in the upper sheet 1j and the lower sheet 2j, repulsive force works due to the repulsive force of the same magnetic pole, so there is no contact when the coordinate input panel is not pressed, There will be no problems due to unintended shorts. Further, when the user presses the coordinate input panel, there is no insulator such as a dot spacer between the resistive films, so that accurate coordinate data can be obtained.

  FIG. 18 shows a twelfth reference example of the coordinate input panel used in the coordinate detection apparatus of the present invention. The coordinate input panel of FIG. 18 has the same configuration except that the permanent magnet 61 on the mounting substrate 11 shown in FIG. In this case, when a current is passed through the coil pattern 65, a magnetic field is generated, and the same effect as the coordinate input panel of FIG. 17 can be obtained. Further, when the film-like magnet (printed film magnet 51) of the upper sheet 1j shown in FIG. 17 is formed with a coil pattern that can be a magnet, the same effect can be obtained.

  Here, an example of the configuration of the coordinate detection apparatus using the coordinate input panel shown in each of the reference examples will be specifically described. For example, as shown in FIG. 19, when printing a 30 μm thick magnetic printing layer 102 on one side of a 100 μm thick PET film 101, for example, a paste in which SmCo powder is dispersed in a binder (epoxy) is applied to the PET film 101. Apply evenly and heat cure it. Originally, the magnetic properties of SmCo are coercive force Hc = 7000-10000e and residual magnetic flux density Br = 9000-12000G. However, in the magnetic printing layer 102, since the SmCo powder is dispersed in a binder (epoxy), the magnetic properties are The holding power Hc = 5000e and the residual magnetic flux density Br = 5000G.

  When this magnetic printing layer 102 is magnetized by reversing the magnetization direction at a pitch of 4 mm as shown in the figure below, and this magnetized printed film forming sheet is faced so that the magnetic poles of the opposing portions coincide, A repulsive force of about 3 g is generated in an area of about 20 × 20 mm at the center. Therefore, when there is no pressing of 3 g or more against the coordinate detection device (normal time), the upper and lower sheets do not contact with each other due to a repulsive force of about 3 g.

  The coordinate detection apparatus having the magnetic printing layer 102 as described above is produced using the following manufacturing process.

  1. Magnetic paste layer 102 is formed by uniformly printing on one side of PET film 101 a paste in which a ferromagnetic material powder such as ferrite and SmCo is dispersed in a binder (epoxy or the like).

  2, Here, using a magnetizing head 103 as shown in FIG. 20, the PET film 101 is fed by the distance of the magnetizing pitch, and each time the direction of current flowing from the power terminal 105 to the coil 104 wound around the yoke 106 is changed. By reversing, the magnetic printing layer 102 whose magnetization direction is reversed at a constant pitch is formed. It should be noted that a plurality of magnetizing heads can be arranged when a wide PET film is used due to measures for mass production.

  3. In order to improve the workability of the following steps, the PET film 101 is cut as shown in FIG.

  4, as shown in FIG. 22, a resistance film 107 is screen-printed on the back surface of the PET film 101.

  5, As shown in FIG. 23, the electrodes 108, 109, 110, 111 and the wiring pattern 112 are formed of a conductive material such as Ag.

  6 and FIG. 24, an insulating layer is formed except for the connector connection portion 113 so that the wiring pattern 112 is not short-circuited when the upper and lower sheets are bonded to each other later.

  7. As shown in FIG. 25, an adhesive layer pattern 115 is formed on the adhesive portion around the operation area in order to bond the upper and lower sheets together.

  8. As shown in FIG. 26 (a), a protective sheet 116 is attached to the upper sheet, and the die is cut into the shape of the coordinate detection device (the upper and lower sheets are opened). Further, as shown in FIG. 26B, the die-cut sheet is bonded so that the same magnetic poles face each other. As described above, the coordinate input panel generated by the steps 1 to 8 is fixed to the mounting board, and the connector connecting portion 113 is connected to an external circuit, so that it can be applied as a coordinate input device such as a personal computer.

  FIG. 28 shows a first embodiment of a coordinate input panel used in the coordinate detection apparatus of the present invention. In the coordinate input panel of FIG. 28, a spacer 304 is provided in the periphery of the upper sheet 300 and the lower sheet 302, and the upper sheet 300 and the lower sheet 302 are attached to each other with an adhesive layer 305 through the spacer 304. At this time, since the upper sheet 300 is stretched (being attached in a stretched state), the upper sheet 300 and the lower sheet 302 are configured to face each other with a predetermined distance therebetween. In the coordinate input panel, a mounting substrate 306 is further attached to the lower surface of the lower sheet 302 in the sheet including the upper sheet 300 and the lower sheet 302.

  Here, a PET film is used as the material of the upper sheet 300 and the lower sheet 302, and the thickness thereof is about 0.1 mm. Note that an insulator is preferably used for the spacer 304. Further, like the reference examples up to the twelfth reference example described above, electrodes are formed in the peripheral portion of the upper sheet 300 and the lower sheet 302. In the following examples including, the illustration of the electrodes is omitted, and the same applies to the mounting substrate.

  The coordinate detection apparatus according to the first embodiment is different from the conventional one in which a dod spacer made of an insulator is disposed between the opposed upper sheet and lower sheet (between the resistive films). The sheet 300 is stretched to face each other with a predetermined interval. Then, only when the coordinate input panel is pressed, the resistance films of the upper sheet 300 and the lower sheet 302 come into contact with each other, and when the contact is released, they again face each other at a predetermined interval due to the tension of the upper sheet 300. Even if the upper sheet 300 is deformed due to changes over time when the coordinate detection device is used, the predetermined distance between the upper sheet 300 and the lower sheet 302 is maintained because the upper sheet 300 is stretched. Is done.

  Therefore, there is no conventional problem that the coordinate data detected by the contact of the resistive film so as to avoid the dod spacer becomes unstable, and accurate coordinate data can be detected on all contact surfaces on the coordinate input panel. Become. Further, there is no possibility that a short circuit occurs even if the sheet is deformed due to a change with time when the coordinate detection apparatus is used.

  In the coordinate input panel of the coordinate detection apparatus according to the second embodiment shown in FIG. 29, the upper sheet 308 and the lower sheet 310 are attached to an attachment housing 312 provided on the mounting substrate 311 of the coordinate detection apparatus. So as to face each other with a predetermined distance. At this time, the upper sheet 308 is stretched by the peripheral portion of the upper sheet 308 being pushed into the groove 314 formed in the mounting housing 312 by the pressing member 316 at the time of attachment.

  The coordinate detection apparatus according to the second embodiment is different from the conventional one in which a dod spacer made of an insulator is disposed between the opposing upper sheet and lower sheet (between the resistive films). 308 and the lower sheet 310 are attached to the attachment housing 312 of the coordinate detection device and face each other with a predetermined distance therebetween. Only when the coordinate input panel is pressed, the resistance films of the upper sheet 308 and the lower sheet 310 come into contact with each other. When the contact is released, the upper sheet 308 and the lower sheet 310 again face each other with a predetermined distance therebetween. Even if the upper sheet 308 is deformed due to changes over time when the coordinate detection device is used, the upper sheet 308 is stretched, so that a predetermined interval between the upper sheet 308 and the lower sheet 310 is maintained. Is done.

  Therefore, in the coordinate detection apparatus according to the second embodiment, there is no conventional problem that the coordinate data detected by the contact of the resistance film so as to avoid the dod spacer is unstable, and all the coordinates on the coordinate input panel Accurate coordinate data can be detected on the contact surface. In addition, in the third embodiment shown in FIG. 30, instead of the above-described coordinate detection device mounting housing according to the second embodiment, the upper sheet 318 stands on the mounting substrate 322 to which the lower sheet 320 is adhered. In this case, holes 326 are formed in the upper sheet 318 at a smaller interval than between the guide pins 324 so that the upper sheet 318 is stretched and the holes are formed. The interval between the portions 326 is increased to the interval between the guide pins 324, and the guide pins 324 are inserted into the holes 326 in the upper sheet 318. Also with this configuration, the same effect of the present invention as that of the coordinate detection apparatus according to the second embodiment can be obtained. In order to give tension to the upper sheet more reliably, as in the fourth embodiment shown in FIG. 31, in the coordinate input panel having the upper sheet 328 and the lower sheet 330, the peripheral portion of the upper sheet 328 is coiled. It is also suitable to be configured to be attached to an attachment housing (not shown) via an elastic member 332 such as a spring.

  FIG. 32 shows a fifth embodiment of the coordinate input panel used in the coordinate detection apparatus of the present invention. The coordinate input panel 333 shown in FIG. 32 has an upper sheet 334 and a lower sheet 336 that are opposed to each other with a predetermined distance from the center portion of the upper sheet 334 in the X direction. The layer 338 is adhered and configured. For example, on the operation surface 340 of the computer shown in FIG. 32 (b), the coordinate input panel 333 is arranged with the X direction of bending directed toward the keyboard 340. In the seventeenth embodiment, the bending is performed only in the X direction in FIG. 32. However, the present invention is not limited to this, and the entire bending may be performed including the Y direction.

  Here, a PET film is used as the material of the upper sheet 334 and the lower sheet 336, and the thickness thereof is formed to be about 0.1 mm. The upper sheet 334 and the lower sheet 336 have their peripheral portions attached by the adhesive layer 338 described above, and an insulator is appropriately inserted between the upper sheet 334 and the lower sheet 336 (not shown).

  The coordinate detection apparatus according to the fifth embodiment is different from the conventional one in which a dod spacer made of an insulator is disposed between the upper sheet and the lower sheet facing each other. And facing each other at a predetermined interval. Then, only when the coordinate input panel 333 is pressed, the resistance films of the upper sheet 334 and the lower sheet 336 come into contact with each other, and when the contact is released, they again face each other at a predetermined interval by the restoring force of the upper sheet 334. Even if the upper sheet 334 is deformed due to changes over time when the coordinate detection apparatus is used, the center portion of the upper sheet 334 is bent upward, so that the upper sheet 334 is bent between the upper sheet 334 and the lower sheet 336. The predetermined interval is maintained.

  Therefore, in the coordinate detection apparatus according to the fifth embodiment, there is no conventional problem that the coordinate data detected by the contact of the resistance film so as to avoid the dod spacer is unstable, and all the coordinates on the coordinate input panel 333 are displayed. On the contact surface, accurate coordinate data can be detected. In this way, the coordinate detecting device in which the center portion of the upper sheet is bent upward is specifically a taper inclined so as to narrow toward the outside as in the sixth embodiment shown in FIG. The lower sheet 344 is attached to the side surface of the attachment housing 342 formed in a shape, and the upper sheet 346 is attached to the upper surface of the attachment housing 342 so that the central portion of the upper sheet 346 is bent upward. Can be configured.

  As another specific configuration, as in the seventh embodiment shown in FIG. 34, the upper sheet 348 is stretched and the protective sheet 350 is adhered to the upper surface of the upper sheet 348 (see FIG. 34 (a)), after the upper sheet 348 is contracted so that the central portion of the upper sheet 348 is bent upward (FIG. 34 (b)), the lower sheet 352 is adhered and formed. (FIG. 34 (c)).

  Furthermore, as another specific configuration, as in the eighth embodiment shown in FIG. 35, the double-sided adhesive tape 356 is stuck on the lower surface of the protective sheet 354 (FIG. 35 ( a)), the double-sided adhesive tape 356 contracts and the central portion of the protective sheet 354 is bent upward (FIG. 35 (b)), and the protective sheet 354 is attached to the upper surface of the upper sheet 358. After the adhesive tape 356 is adhered and the central portion of the upper sheet 358 is bent upward (FIG. 35C), the lower sheet 360 can be adhered and formed (FIG. 35). (D)).

  Furthermore, as another specific configuration, as in the ninth embodiment shown in FIG. 36, the upper sheet 362 is molded using the molds 364a and 364b so that the central portion is bent outward. After (FIG. 36 (a)), the lower sheet 366 can be attached and formed (FIG. 36 (b)). Further, as another specific configuration, as in the tenth embodiment shown in FIG. 37, the central portion of the protective sheet 368 is molded and bent by the same method as in the eighth embodiment ( The protective sheet 368 is attached to the upper surface of the upper sheet 370 with the curved surface facing upward (FIG. 37A), and the central portion of the upper sheet 370 is bent upward. After that (FIG. 37 (b)), the lower sheet 372 can be attached and formed (FIG. 37 (c)).

  As another specific configuration, as in the eleventh embodiment shown in FIG. 38, the upper sheet 374 is configured and used as a multilayer sheet formed of a plurality of layers 374a and 374b having different thermal expansion coefficients. After the central portion of the upper sheet 374 is bent upward at a temperature, the lower sheet 376 can be attached and formed.

  Such a coordinate input panel is formed as follows. As shown in the developed view of the coordinate input panel in FIG. 38A, one layer 374b of the upper sheet and the lower sheet 376 on which a resistance film pattern, a wiring pattern, a resist pattern, an adhesive layer pattern and the like are formed (not shown) are formed. Is stamped from one sheet material.

  Next, a new upper sheet layer 374a is prepared separately, and as shown in FIG. 38B, the upper sheet layer 374b and the lower sheet 376 in the developed state and the new upper sheet layer 374a are about -20. It holds until it reaches a constant temperature state in the low temperature thermostat 378 of -30 degreeC. Here, a PET film having a thermal expansion coefficient of about 3 × 10 −5 / ° C. is used as a material for the upper sheet layer 374b and the lower sheet 376, and the film thickness is about 0.1 mm. On the other hand, as a material for the new upper sheet layer 374a, a sheet material having a larger thermal expansion coefficient than PET, for example, a polycarbonate film having a thermal expansion coefficient of about 6 × 10 −5 / ° C. is used, and the film thickness is about 0. .1 mm.

  Then, a new upper sheet layer 374a is adhered to the operation surface side of the upper sheet layer 374b (in FIG. 38 (a), the back side of the paper surface) in the thermostat 378 to form a two-layer sheet. Next, the sheet with the new upper sheet layer 374a attached thereto is taken out of the thermostatic bath and left at room temperature. As a result, the new upper sheet layer 374a that has been excessively shrunk in the thermostatic chamber due to the relatively large thermal expansion coefficient is heated from a low temperature to room temperature, and is thermally expanded more than the upper sheet layer 374b. Then, as shown in FIG. 38C, the center portion of the upper sheet 374 is bent upward (outside).

  In this state, as shown in FIG. 38 (d), it is folded so that the resistance film side opposes the YY line in FIG. 38 (a) and is adhered by the adhesive layer 380, and the coordinate axes of the eleventh embodiment are used. A panel is formed. Further, as another specific configuration, as in the twelfth embodiment shown in FIG. 39, a protective sheet 384 having a thermal expansion coefficient different from that of the upper sheet 382 is adhered to the upper sheet 382, and the upper temperature at the use temperature is increased. After the center portion of the sheet 382 is bent upward, the lower sheet 386 can be attached and formed.

  Such a coordinate input panel is formed as follows. A polycarbonate film having a high coefficient of thermal expansion is used as the material of the upper sheet 382, and a PET film having a low coefficient of thermal expansion is used as the material of the protective sheet 384, and each film thickness is formed to be about 0.1 mm. As shown in FIG. 39A, the upper sheet 382 and the protective sheet 384 are placed in a high-temperature thermostatic chamber 388 adjusted to a temperature of 70 to 100 ° C. and held, for example, for about 1 hour until reaching a constant temperature state. Then, it sticks in the thermostat 388.

  Next, the upper sheet 382 with the protective sheet 384 attached is taken out of the thermostatic bath and left at room temperature. As a result, since the thermal expansion coefficient is relatively large, the upper sheet 382 that has been relatively excessively expanded in the thermostatic bath is cooled from the constant temperature to room temperature and contracts more than the protective sheet 384, and FIG. As shown in b), the central portion of the upper sheet 382 is bent upward (outside).

  In this state, as shown in FIG. 39 (c), the upper sheet 382 with the protective sheet 384 attached is attached to the lower sheet 386 with the adhesive layer 390, and the coordinate axis panel of the twenty-fourth embodiment is formed. The Further, as another specific configuration, as in the thirteenth embodiment shown in FIG. 40, a protective sheet 394 formed of a plurality of layers having different thermal shrinkage rates is attached to the upper sheet 392 and used. After the central portion of the upper sheet 392 is bent upward at room temperature, which is a temperature, the lower sheet 396 and the adhesive layer 398 can be attached to each other.

  Such a coordinate axis panel is formed as follows. A base layer 394a of the protective sheet 394 is formed using a PET film having a thickness of 100 μm, and hard coat layers 394b and 394c made of acrylic resin are formed on both sides of the base layer 394a. The thickness of the hard coat layers 394b and 394c is set so that the hard coat layer 394c provided on the lower surface side is thicker than the hard coat layer 394b provided on the upper surface side of the base layer 394a. As a method for forming the hard coat layers 394b and 394c, a method in which a UV curable acrylic resin material is applied and cured by UV irradiation is employed. Since the hard coat layers 394b and 394c after UV curing are further polymerized by subsequent heating and undergo volume shrinkage, generally, the hard coat layer 394c has a larger heat shrinkage rate than the base layer 394a and is thicker. However, it contracts relatively larger than the hard coat layer 394b. Accordingly, when the protective sheet 394 having the hard coat layers 394b and 394c formed on both surfaces of the base layer 394a is held in a high temperature atmosphere (for example, 70 to 100 ° C.) for a predetermined time (FIG. 40A), the protective sheet 394 is centered. The part is bent upward (outside). And since heat shrinkage is irreversible, even if it returns to normal temperature, the protective sheet 394 keeps the state by which the center part was bent toward upper direction (outside) (FIG.40 (b)).

  In this state, as shown in FIG. 40 (c), for example, when an upper sheet 392 using a PET film as a material is attached, the central portion of the upper sheet 392 is upward (following the shape of the protective sheets 394a and 394b). It is bent towards the outside. A lower sheet 396 is adhered to the upper sheet 392 by an adhesive layer 398 to form the coordinate axis panel of the thirteenth embodiment.

  Further, the coordinate detection apparatus according to the present invention is not limited to the upper sheet of the fifth to thirteenth embodiments described above, but, for example, as in the fourteenth embodiment shown in FIG. As shown in FIG. 362, the upper sheet 404 is adhered to the lower sheet 402 as a configuration in which the center portion of the lower sheet 402 is bent downward using the molds 401a and 401b (FIG. 41A). (FIG. 41 (b)).

  Further, as another specific configuration, as in the fifteenth embodiment shown in FIG. 42, the lower surface of the lower sheet 408 is mounted on the mounting substrate 406 formed so that the central portion is bent downward. May be pasted and the center portion of the lower sheet 408 may be bent downward, and then the upper sheet 410 may be pasted by the adhesive layer 412. As another specific configuration, as in the twenty-eighth embodiment shown in FIG. 43, the lower sheet 414 has an adhesive layer 416 formed in a thick frame shape on the lower surface of the lower sheet 414. The upper sheet 420 may be attached after being attached to the mounting substrate 418 so that the central portion of the lower sheet 414 is bent downward.

  According to the coordinate detection apparatus of the sixth to eighteenth embodiments described above, the same effects of the present invention as in the fifth embodiment can be obtained. The coordinate input panel of the coordinate detector according to the seventeenth embodiment shown in FIG. 44 has an upper sheet 422 and a lower sheet 424 facing each other at a predetermined interval, and is mounted on the lower surface of the lower sheet 424. The substrate 426 is attached, and the lower sheet 424 and the mounting substrate 426 are connected to the space 427 formed between the upper sheet 422 and the lower sheet 424 attached by the adhesive layer 427 and a communication hole for communicating with the outside air. 428 is formed.

  The coordinate detection apparatus according to the seventeenth embodiment is difficult to freely circulate between the space formed between the upper sheet and the lower sheet and the outside air according to the pressed state of the coordinate input panel. Unlike the conventional case where the upper sheet and the lower sheet remain adhered to each other because a sufficient amount of air does not flow immediately after the pressing is released, the mounting substrate 426 is provided on the lower surface of the lower sheet 424. The lower sheet 424 and the mounting substrate 426 are formed with communication holes 424 for communicating the space 427 formed between the upper sheet 422 and the lower sheet 424 and the outside air, and pressing the coordinate input panel The air is configured to circulate between the space portion 427 and the outside air according to the state. For this reason, when the contact is released, the upper sheet 422 and the lower sheet 424 again face each other with a predetermined distance therebetween.

  Therefore, in the coordinate detection device according to the seventeenth embodiment, there is a conventional problem that the detected coordinate data becomes unstable due to the upper sheet 422 and the lower sheet 424 remaining stuck to each other even when the pressure is released. In addition, accurate coordinate data can be detected on all contact surfaces on the coordinate input panel. Further, the coordinate detection apparatus according to the present invention is different from the above-described seventeenth embodiment in which the communication hole for communicating the space portion and the outside air is formed, in the eighteenth embodiment shown in FIG. The upper sheet 430 and the lower sheet 432 are frame-like, for example, adhered by a thick film adhesive layer 434 having a thickness exceeding 50 μm to form a space portion 436 sealed between the upper sheet 430 and the lower sheet 432. The configuration is as follows.

  According to the coordinate input panel of the eighteenth embodiment, when the coordinate input panel is pressed, the air in the space 436 formed between the upper sheet 430 and the lower sheet 432 does not escape into the outside air, and therefore There is no conventional problem that the coordinate data detected by the upper sheet and the lower sheet staying stuck to each other even when the pressure is released, and this book is similar to the coordinate input panel of the fifteenth embodiment. The effects of the invention can be obtained.

It is a principle diagram of the present invention. This is a first reference example. This is a second reference example. This is a third reference example. This is a fourth reference example. This is a fifth reference example. This is a sixth reference example. It is a principle diagram of the present invention. It is a principle diagram of the present invention. This is a seventh reference example. This is an eighth reference example. It is a figure which shows the magnetic field intensity on the central axis of a cylindrical magnet. It is a principle diagram of the present invention. It is a principle diagram of the present invention. This is a ninth reference example. This is a tenth reference example. This is an eleventh reference example. This is a twelfth reference example. It is a structure of a magnetic printing film. This is a magnetization method. It is a PET film on which a magnetic printing film has been formed. Resist film printing. It is the formation of a wiring pattern. Resist pattern formation. It is formation of the adhesion layer pattern. It is a figure which shows die cutting and bonding. It is a structure of a coordinate detection apparatus. This is the first embodiment. This is a second embodiment. This is a third embodiment. This is a fourth embodiment. This is a fifth embodiment. This is the sixth embodiment. This is the seventh embodiment. This is an eighth embodiment. This is the ninth embodiment. This is a tenth embodiment. This is an eleventh embodiment. This is a twelfth embodiment. This is a thirteenth embodiment. This is a fourteenth embodiment. This is a fifteenth embodiment. This is a sixteenth embodiment. This is a seventeenth embodiment. This is an eighteenth embodiment. It is the structure of the conventional coordinate input panel. This is a problem of the conventional coordinate detection apparatus.

Explanation of symbols

1, 1a, 1b, 1c, 1d, 1e, 1f, 1g, 1h, 1i, 1j, 300, 308, 318, 328, 334, 346, 348, 358, 362, 370, 374, 382, 392, 404, 410, 420, 422, 430 Upper sheet 2, 2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h, 2i, 2j, 302, 310, 320, 330, 336, 344, 352, 360, 366, 372 376, 386, 396, 402, 408, 418, 424, 432 Lower sheet 3, 4 Resistive film 6, 7 PET film 8, 9 Magnetic printing film 10, 31, 116, 350, 354, 368, 384, 394 Protection Sheet 11 Mounting substrate 15, 16 Magnetic powder dispersion resistance film 21, 22 Magnetic thin film 25, 26 Magnetic powder dispersion film 32, 306, 311, 3 2,406,418,426 Mounting board 35, 36 Printed film magnet 41, 42 Printed film magnet 46, 47, 48, 49 Printed film magnet 51, 52 Printed film magnet 53 Film magnet printing position 54, 55, 56, 57 Print Film magnet 61 Permanent magnet 65 Coil pattern 101 PET film 102 Magnetic printed film 103 Magnetized head 104 Coil 105 Power supply terminal 106 Yoke 107 Resistive film 108, 109, 110, 111 Electrode 112 Wiring pattern 113 Connector connection part 114 Resist pattern 115 Adhesive layer Pattern 117 Folding unit 201, 333 Coordinate input panel 202 Detection unit 203, 204 Resistance film 205, 206, 207, 208 Electrode 209, 210, 211, 212 Transistor 213 Control unit 214 Voltage detection unit 215 Input range 216 Spacer 304 spacer 305, 338, 380, 390, 398, 412, 416, 427, 434 adhesive layer 312, 342 mounting housing 316 pressing member 324 guide pin 332 elastic member 356 double-sided adhesive tape 364a, 364b, 401a, 401b type 378 388, 400 Constant temperature bath 394a Base layer 394b, 394c Hard coat layer 428 Communication hole

Claims (19)

In a voltage detection type coordinate detection device that generates coordinate data based on a voltage value detected by touching a coordinate input panel configured by an X coordinate and a Y coordinate,
The coordinate input panel has a configuration in which an upper sheet and a lower sheet are stretched through a spacer formed in a peripheral portion so that the upper sheet and the lower sheet face each other with a predetermined distance therebetween. A coordinate detection apparatus, wherein the upper sheet and the lower sheet are electrically connected by contact, and one sheet detects the voltage value of the other sheet alternately. In a voltage detection type coordinate detection device that generates coordinate data based on a voltage value detected by touching a coordinate input panel configured by an X coordinate and a Y coordinate,
The coordinate input panel has a configuration in which an upper sheet is stretched on a mounting housing of the coordinate detection device, and the upper sheet and the lower sheet are opposed to each other with a predetermined distance therebetween. A coordinate detection apparatus, wherein the upper sheet and the lower sheet are electrically connected, and one sheet detects the voltage value of the other sheet alternately. In a voltage detection type coordinate detection device that generates coordinate data based on a voltage value detected by touching a coordinate input panel configured by an X coordinate and a Y coordinate,
The coordinate input panel has a structure in which an upper sheet is stretched on a guide pin standing on a mounting substrate to which a lower sheet is attached, and the upper sheet and the lower sheet are opposed to each other with a predetermined distance therebetween, A coordinate detection apparatus, wherein the upper sheet and the lower sheet are brought into conduction by contacting a coordinate input panel, and one sheet detects the voltage value of the other sheet alternately. In a voltage detection type coordinate detection device that generates coordinate data based on a voltage value detected by touching a coordinate input panel configured by an X coordinate and a Y coordinate,
The coordinate input panel is configured such that the center portion of the upper sheet is bent upward and the upper sheet and the lower sheet face each other with a predetermined distance therebetween, and the upper sheet is brought into contact with the coordinate input panel. And a lower sheet are conducted, and one sheet detects a voltage value of the other sheet alternately. In the coordinate detection apparatus according to claim 4,
A protective sheet is attached to the upper surface of the upper sheet in a state where the upper sheet is stretched, the upper sheet is contracted, and a central portion of the upper sheet is bent upward. Coordinate detection device. In the coordinate detection apparatus according to claim 4,
A double-sided adhesive tape is stuck on the lower surface of the protective sheet, the double-sided adhesive tape shrinks and the central portion of the protective sheet is bent upward, and the upper surface of the upper sheet is A coordinate detection apparatus, wherein a double-sided adhesive tape to which the protective sheet is attached is attached, and a central portion of the upper sheet is bent upward. In the coordinate detection apparatus according to claim 4,
A coordinate detection apparatus, wherein the center portion of the upper sheet is molded so as to be bent outward. In the coordinate detection apparatus according to claim 4,
Molded so that the central part of the protective sheet is bent, the protective sheet is stuck on the upper surface of the upper sheet with the curved surface facing upward, and the central part of the upper sheet faces upward A coordinate detection apparatus characterized by being curved. In the coordinate detection apparatus according to claim 4,
The coordinate detection apparatus, wherein the upper sheet is configured as a multilayer sheet formed of a plurality of layers having different coefficients of thermal expansion, and a central portion of the upper sheet is bent upward at a use temperature. In the coordinate detection apparatus according to claim 4,
The coordinate detection apparatus, wherein the upper sheet is configured as a multilayer sheet formed of a plurality of layers having different thermal shrinkage rates, and a central portion of the upper sheet is bent upward at a use temperature. In the coordinate detection apparatus according to claim 4,
A coordinate detection apparatus, wherein a protective sheet having a coefficient of thermal expansion different from that of the upper sheet is adhered to the upper sheet, and a central portion of the upper sheet is bent upward at a use temperature. In the coordinate detection apparatus according to claim 4,
A coordinate detection apparatus, wherein a protective sheet composed of a plurality of layers having different thermal shrinkage rates is attached to the upper sheet, and a central portion of the upper sheet is bent upward at a use temperature. In a voltage detection type coordinate detection device that generates coordinate data based on a voltage value detected by touching a coordinate input panel configured by an X coordinate and a Y coordinate,
The coordinate input panel has an upper sheet and a lower sheet that are bent downward at the center portion of the lower sheet and face each other at a predetermined interval, and the upper sheet and the lower sheet are brought into contact with the coordinate input panel. A coordinate detection apparatus, wherein sheets are conducted and alternately one sheet detects a voltage value of the other sheet. The coordinate detection device according to claim 13,
A coordinate detection apparatus, wherein a lower surface of the lower sheet is attached to a mounting substrate whose central portion is bent downward, and the central portion of the lower sheet is bent downward. The coordinate detection device according to claim 13,
The lower sheet is attached to a mounting substrate via an adhesive layer formed in a frame shape on the lower surface of the lower sheet, and a central portion of the lower sheet is bent downward. A coordinate detection device. In a voltage detection type coordinate detection device that generates coordinate data based on a voltage value detected by touching a coordinate input panel configured by an X coordinate and a Y coordinate,
The coordinate input panel has an upper sheet and a lower sheet that are spaced apart from each other by a predetermined distance, and a mounting substrate is attached to a lower surface of the lower sheet, and an upper sheet and a mounting sheet are attached to the lower sheet and the mounting substrate. A communication hole for communicating the space formed between the lower sheet and the outside air is formed, and the air is circulated between the space and the outside air according to the pressing state of the coordinate input panel. The coordinate detecting device is characterized in that the upper sheet and the lower sheet are brought into conduction by contacting the coordinate input panel, and one sheet detects the voltage value of the other sheet alternately. In a voltage detection type coordinate detection device that generates coordinate data based on a voltage value detected by touching a coordinate input panel configured by an X coordinate and a Y coordinate,
The coordinate input panel has an upper sheet and a lower sheet that are opposed to each other with a predetermined interval, and the upper sheet and the lower sheet are bonded to each other by a thick film-like adhesive layer. A sealed space is formed between the upper sheet and the lower sheet by contacting the coordinate input panel, and one sheet detects the voltage value of the other sheet alternately. Characteristic coordinate detection device. A sheet for a coordinate input panel of a voltage detection type coordinate detection device,
The coordinates of the sheet are such that the upper sheet is stretched over the lower sheet via a spacer formed in the peripheral portion, and the upper sheet and the lower sheet face each other with a predetermined distance therebetween Input panel sheet. A sheet for a coordinate input panel of a voltage detection type coordinate detection device,
The sheet for a coordinate input panel, wherein the sheet is configured such that a central portion of the upper sheet is bent upward and is opposed to the upper sheet lower sheet at a predetermined interval.

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