WO2017163604A1 - 感圧センサ - Google Patents
感圧センサ Download PDFInfo
- Publication number
- WO2017163604A1 WO2017163604A1 PCT/JP2017/002944 JP2017002944W WO2017163604A1 WO 2017163604 A1 WO2017163604 A1 WO 2017163604A1 JP 2017002944 W JP2017002944 W JP 2017002944W WO 2017163604 A1 WO2017163604 A1 WO 2017163604A1
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- WIPO (PCT)
- Prior art keywords
- wiring
- electrode
- electrode pattern
- pressure
- electrodes
- Prior art date
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/205—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using distributed sensing elements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/225—Measuring circuits therefor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/045—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
Definitions
- the present invention relates to a pressure-sensitive sensor, and more particularly to a pressure-sensitive sensor in which a pressure-sensitive layer and a pair of electrode patterns are disposed to face each other with a space interposed therebetween.
- a pressure-sensitive sensor has been known as one having a pressure detection function for detecting a pressing force (see, for example, Patent Document 1).
- the pressure sensor 1 described in Patent Document 1 includes a pressure-sensitive thin film 3 and electrodes 41 and 42, both of which are opposed to each other through a space.
- the electrodes 41 and 42 shown in FIG. 11 have a comb-teeth shape.
- a pressure detection part detects pressing force.
- the pressure-sensitive resistance in the conduction path of the pressure sensor 1 (between the output ends of the electrodes) is the resistance of the first electrode wiring, the contact resistance between the first electrode and the pressure-sensitive thin film, the resistance of the pressure-sensitive thin film, 2 is the total of the contact resistance between the second electrode and the pressure-sensitive thin film and the resistance of the second electrode wiring.
- the contact resistance changes depending on the magnitude of the pressing force. Thereby, the pressing force is measured. Note that when the pressing positions are different, the lengths of the conduction paths of the electrode wiring may be greatly different regardless of the magnitude of the pressing force. Accordingly, even with the same pressing force, the resistance of the entire conduction path varies depending on the pressing position.
- the above contact resistance is sufficiently larger than the resistance of the conductive path of the electrode wiring, so the fluctuation of the resistance of the conductive path of the electrode wiring can be ignored. There were few problems.
- the ratio of the resistance of the conductive path of the electrode wiring is increased in the enlarged pressure-sensitive sensor, the resistance detection value with respect to the pressing force may be greatly different depending on the difference.
- An object of the present invention is to eliminate in-plane sensitivity variations of pressure in a pressure sensor.
- a pressure-sensitive sensor includes a first insulating base material, a second insulating base material, a pressure-sensitive conductor, a first electrode pattern, a second electrode pattern, a first wiring portion, A second wiring portion.
- the second insulating base is disposed between the first insulating base and a space.
- the pressure-sensitive conductor is formed on the entire surface of the first insulating substrate on the second insulating substrate side.
- the first electrode pattern is formed on a surface of the second insulating substrate on the first insulating substrate side, and extends so as to connect the ends of the plurality of first electrodes and the plurality of first electrodes. And a first wiring portion extending from the first end of the first connecting portion.
- the second electrode pattern is formed on the surface of the second insulating substrate on the first insulating substrate side, and connects a plurality of second electrodes arranged alternately with the first electrodes and ends of the plurality of second electrodes. And a second connection portion having a second end portion diagonal to the first end portion and a second wiring portion extending from the second end portion of the second connection portion.
- the second wiring portion has a resistance of a conduction path between the output end of the first wiring portion and the output end of the second wiring portion when the adjacent first electrode and second electrode are conducted through the pressure-sensitive conductor. Extend so as to be substantially equal in any combination of the first electrode and the second electrode. “Extending from the end” means extending from one of the predetermined length portions at the end (hereinafter the same).
- the first wiring portion extends from the first end portion of the first connecting portion, and the second wiring portion extends from the second end portion of the second connecting portion. Therefore, when the adjacent first electrode and second electrode are conducted through the pressure-sensitive conductor, the total resistance of the resistance of the first electrode wiring and the resistance of the second electrode wiring is the same as that of the first electrode. Any combination of the second electrodes is substantially equal.
- the second wiring portion extends from the first end portion of the second connecting portion of the second electrode pattern, the first electrode in the vicinity of the second end portion is pushed so that the second electrode is conductive. When pressure is applied (first case), the conduction path of the first connection part and the conduction path of the second connection part are both long.
- the conduction path of the first connection part remains unchanged and short, but the conduction path of the second connection part becomes longer, and the resistance of the second wiring part is added thereto.
- the resistance of the entire conduction path is significantly higher than the conventional one. As a result, the resistance of the entire conduction path is substantially equal in any combination of the first electrode and the second electrode.
- the variation in resistance of the conduction path between the output end of the first wiring portion and the output end of the second wiring portion may be 10% or less of the pressure sensitive resistance when the maximum load is applied.
- the second wiring part may extend through the vicinity of the second connecting part.
- the second wiring portion may extend through the vicinity of the first connecting portion.
- a pressure-sensitive sensor includes a first insulating substrate, a second insulating substrate, a pressure-sensitive conductor, a first electrode pattern, a second electrode pattern, and a first wiring portion. , A second wiring part, a third electrode pattern, a fourth electrode pattern, a third wiring part, and a fourth wiring part.
- the second insulating base is disposed between the first insulating base and a space.
- the pressure-sensitive conductor is formed on the entire surface of the first insulating substrate on the second insulating substrate side.
- the first electrode pattern is formed on a surface of the second insulating substrate on the first insulating substrate side, and extends so as to connect the ends of the plurality of first electrodes and the plurality of first electrodes.
- the second electrode pattern is formed on the surface of the second insulating substrate on the first insulating substrate side, and connects a plurality of second electrodes arranged alternately with the first electrodes and ends of the plurality of second electrodes.
- a second connection portion having a second end portion diagonal to the first end portion and a second wiring portion extending from the second end portion of the second connection portion.
- the second wiring portion has a resistance of a conduction path between the output end of the first wiring portion and the output end of the second wiring portion when the adjacent first electrode and second electrode are conducted through the pressure-sensitive conductor. Extend so as to be substantially equal in any combination of the first electrode and the second electrode.
- the third electrode pattern is formed on the surface of the second insulating substrate on the first insulating substrate side, and a plurality of third electrodes and a third connecting portion extending so as to connect one ends of the plurality of third electrodes, And a third wiring portion extending from the third end of the third connecting portion.
- the fourth electrode pattern is formed on the surface of the second insulating base on the side of the first insulating base, and connects a plurality of fourth electrodes arranged alternately with the third electrodes and ends of the plurality of fourth electrodes. And a fourth connecting portion having a fourth end portion diagonally extending with respect to the third end portion and a fourth wiring portion extending from the fourth end portion of the fourth connecting portion.
- the fourth wiring portion is a resistance of a conduction path between the output end of the third wiring portion and the output end of the fourth wiring portion when the adjacent third electrode and the fourth electrode are conducted through the pressure-sensitive conductor. Extend so as to be substantially equal in any combination of the third electrode and the fourth electrode.
- this sensor a plurality of sensors are arranged at different positions on the plane. Therefore, it is possible to simultaneously detect the pressing forces in different areas.
- the variation in resistance of the conduction path between the output end of the first wiring portion and the output end of the second wiring portion is 10% or less of the pressure-sensitive resistance when the maximum load is applied, and the output of the third end portion
- the variation in resistance of the conduction path between the end and the output end of the fourth end may be 10% or less of the pressure-sensitive resistance when the maximum load is applied.
- the first wiring part and the third wiring part may be common, or the second wiring part and the fourth wiring part may be common.
- the number and area of wiring parts can be reduced.
- the number of control signals on the IC side required for control can be reduced.
- the resistance of the conduction path between the output end of the first wiring portion and the output end of the second wiring portion is substantially equal in any combination of the first electrode and the second electrode. Are equal.
- the schematic diagram which shows the structure of the pressure-sensitive sensor which concerns on this invention The side view of a pressure sensor.
- the top view of a pressure sensor. II-II sectional drawing of FIG. The schematic diagram which shows the principle of resistance measurement.
- FIG. 2 is a schematic cross-sectional view of a display device to which a pressure sensitive sensor is applied.
- FIG. 1 is a schematic diagram showing a configuration of a pressure-sensitive sensor according to the present invention. Note that the cross-sectional view of FIG. 1 merely shows the approximate positional relationship between the layers, and does not strictly reproduce the actual configuration.
- the sensor device 1 is a device for detecting a pressing force.
- the sensor device 1 has a pressure-sensitive sensor 3.
- the pressure-sensitive sensor 3 is a sensor that detects a change in resistance when receiving a pressing force.
- the pressure sensitive sensor 3 mainly includes an upper layer 9, a lower layer 11, and an intermediate adhesive layer 13.
- the upper layer 9 includes an upper film 15 (an example of a first insulating substrate) and a pressure-sensitive layer 17 (an example of a pressure-sensitive conductor).
- the upper film 15 is a layer on which a pressing force from a human finger acts, for example.
- the pressure sensitive layer 17 is formed on the lower surface of the upper film 15 (that is, the surface on the lower film 19 side).
- the pressure sensitive layer 17 is formed on the entire lower surface of the upper film 15. “It is formed entirely” means that it is solidly formed on the entire portion necessary for contact with an electrode to be described later.
- the lower layer 11 includes a lower film 19 (an example of a second insulating base material) and wirings 21.
- the lower film 19 is disposed between the upper film 15 and a space.
- the wiring 21 is formed on the upper surface of the lower film 19 (that is, on the surface on the upper film 15 side).
- An air layer 29 is secured between the wiring 21 and the pressure sensitive layer 17.
- the intermediate adhesive layer 13 is a frame-shaped portion sandwiched between the upper layer 9 and the lower layer 11, and ensures the air layer 29 described above.
- the intermediate adhesive layer 13 includes an insulating layer 23, an insulating layer 25, and an adhesive layer 27.
- the insulating layer 23 is provided on the lower surface of the upper layer 9.
- the insulating layer 25 is provided on the upper surface of the lower layer 11.
- the adhesive layer 27 is disposed between the insulating layer 23 and the insulating layer 25 and adheres both. Thereby, the upper layer 9 and the lower layer 11 are fixed in an insulated state. Note that the insulating layer 23 may be
- the pressure-sensitive layer and the wiring need only be provided on the opposing films and face each other, the pressure-sensitive layer and the wiring may be interchanged.
- the sensor device 1 has a detection circuit 5.
- the detection circuit 5 is a device that detects the pressing force by measuring the resistance in the wiring 21 and performing signal processing when the pressure-sensitive layer 17 comes into contact with the wiring 21 due to the pressing force acting thereon.
- the sensor device 1 has a control unit 7.
- the control unit 7 is a device for controlling the detection circuit 5 and transmitting an output from the detection circuit 5 to another device or displaying it on a display.
- the control unit 7 is a computer including a CPU, RAM, and ROM.
- FIG. 2 is a side view of the pressure sensor.
- FIG. 3 is a plan view of the pressure sensor.
- 4 is a cross-sectional view taken along the line II-II in FIG.
- the lower film 19 has an extension 30 that further extends from a portion facing the upper film 15.
- the extension part 30 includes a first wiring part 35 and a second wiring part 45 (described later).
- the sensor output of the pressure sensor 3 is a single-side extraction method.
- the wiring 21 includes a pair of comb-shaped electrode patterns (described later).
- the material of the upper film 15 and the lower film 19 includes materials that can be used for flexible substrates, for example, general-purpose resins such as polyethylene terephthalate, polystyrene resin, polyolefin resin, ABS resin, AS resin, acrylic resin, and AN resin. be able to.
- general-purpose resins such as polyethylene terephthalate, polystyrene resin, polyolefin resin, ABS resin, AS resin, acrylic resin, and AN resin. be able to.
- general-purpose engineering resins such as polystyrene resins, polycarbonate resins, polyacetal resins, polycarbonate-modified polyphenylene ether resins, polybutylene terephthalate resins, ultrahigh molecular weight polyethylene resins, polysulfone resins, polyphenylene sulfide resins, polyphenylene oxide resins, Super engineering resins such as polyarylate resin, polyetherimide resin, polyimide resin, liquid crystal polyester resin, and polyallyl heat-resistant resin can also be used.
- a metal such as gold, silver, copper, or nickel, or a conductive paste such as carbon can be used.
- these forming methods include printing methods such as screen printing, offset printing, gravure printing, and flexographic printing, and a photoresist method.
- the wiring 21 can also be formed by attaching a metal foil such as copper or gold.
- the wiring 21 can also be formed by forming an electrode pattern with a resist on an FPC plated with a metal such as copper and etching a portion of the metal foil that is not protected by the resist.
- the electrodes may be formed by combining or laminating the formation methods and materials listed here.
- the wiring width is 30 to 500 ⁇ m, and the thickness is 1 to 100 ⁇ m.
- the material is copper
- the wiring width is 10 to 300 ⁇ m
- the thickness is 20 to 1000 nm.
- the pressure sensitive layer 17 is made of, for example, a carbon ink, PEDOT, or a polymer containing conductive particles.
- the composition constituting the pressure-sensitive layer 17 is made of a material whose electric characteristics such as an electric resistance value change according to an external force.
- the pressure sensitive layer 17 can be disposed on the lower film 19 by coating.
- a printing method such as screen printing, offset printing, gravure printing, or flexographic printing can be used.
- a polyol resin-based, isocyanate resin-based, methylene resin-based, acrylic resin-based, urethane resin-based, or silicone resin-based material is used.
- the adhesive layer 27 is, for example, an acrylic resin-based, urethane resin-based, or silicone resin-based adhesive.
- FIG. 5 is a schematic diagram showing the principle of resistance measurement.
- the detection circuit 5 includes a DC power source 22 and an ohmmeter 24, which are connected in series, and a pair of electrode patterns of the wiring 21 are connected to both ends thereof.
- the resistance meter 24 can measure the resistance. Note that when the pressing force increases, the contact resistance between the pressure-sensitive layer 17 and the pair of electrodes decreases. As a result, the magnitude of the pressing force can be accurately measured.
- FIG. 6 is a graph showing a change (pressure-sensitive characteristic) of the resistance R total with respect to the load. It can be seen from the curve shown by the solid line that the resistance decreases as the load increases.
- FIGS. 7 and 8 are plan views showing the electrode pattern of the first example.
- the wiring includes a first electrode pattern 21A (an example of a first electrode pattern) and a second electrode pattern 21B (an example of a second electrode pattern).
- the first electrode pattern 21 ⁇ / b> A includes a plurality of first electrode portions 31, a first connecting portion 33, and a first wiring portion 35.
- the plurality of first electrode portions 31 have a strip shape or a strip shape extending in the left-right direction in the figure, and are arranged at intervals in the up-down direction in the figure.
- the first connecting portion 33 extends in the vertical direction in the drawing and connects the right ends of the plurality of first electrode portions 31 in the drawing.
- the lower end of the first connecting portion 33 in the figure is referred to as a first end portion 37, and the upper end in the drawing is referred to as a second end portion 39.
- the first wiring part 35 extends from the first end part 37.
- the first wiring portion 35 extends to the detection circuit 5 and has an output end connected to the detection circuit 5.
- the second electrode pattern 21 ⁇ / b> B includes a plurality of second electrode portions 41, a second connecting portion 43, and a second wiring portion 45.
- the plurality of second electrode portions 41 have a strip shape or a strip shape extending in the left-right direction in the drawing, and are arranged at intervals in the vertical direction in the drawing.
- the second electrode portions 41 are arranged alternately with the first electrode portions 31.
- the second connecting portion 43 extends in the vertical direction in the drawing and connects the left ends of the plurality of second electrode portions 41 in the drawing.
- the lower end of the second connecting portion 43 in the figure is a first end 47 and the upper end in the figure is a second end 49. That is, the first end 37 and the first end 47 are on the same side, and the second end 39 and the second end 49 are on the same side. In other words, the second end 49 is diagonal to the first end 37.
- the second wiring portion 45 extends from the second end portion 49. More specifically, the second wiring portion 45 starts from the second end portion 49, extends along the second connection portion 43 (that is, through the vicinity), and further extends closer to the first wiring portion 35. Finally, it extends parallel to the first wiring part 35 in the vicinity of the first wiring part 35. Thereby, the second wiring part 45 is longer than the first wiring part 35.
- the second wiring portion 45 extends to the detection circuit 5 and has an output terminal connected to the detection circuit 5. In the pressure sensitive sensor 3, the first wiring portion 35 extends from the first end portion 37 of the first connecting portion 33, and the second wiring portion 45 extends from the second end portion 49 of the second connecting portion 43.
- the output terminal of the first wiring part 35 and the output terminal of the second wiring part 45 (conductivity).
- the resistance of the entire path) is substantially equal in any combination of the first electrode portion 31 and the second electrode portion 41. This will be described in more detail below.
- the first point P ⁇ b> 1 is pressed, and one first electrode portion 31 and one second electrode portion 41 are electrically connected to each other through the pressure-sensitive layer 17.
- the first point P1 is located on the upper side in the drawing, that is, on the second end 39 and second end 49 side.
- the conduction path A1 from the first point P1 to the first electrode pattern 21A becomes the first electrode part 31, the first connecting part 33, and the first wiring part 35.
- the conduction path B1 from the first point P1 to the second electrode pattern 21B becomes the second electrode portion 41, the second connecting portion 43, and the second wiring portion 45.
- the second point P2 is located on the lower side of the drawing, that is, on the first end 37 and first end 47 side.
- the conduction path A2 in the first electrode pattern 21A from the second point P2 becomes the first electrode part 31, the first connection part 33, and the first wiring part 35.
- route B2 in the 2nd electrode pattern 21B from the 2nd point P2 becomes the 2nd electrode part 41, the 2nd connection part 43, and the 2nd wiring part 45.
- the lengths of the entire conduction paths (A1 + B1 and A2 + B2) are substantially equal.
- the wiring resistance variation is 10% or less of the pressure-sensitive resistance value.
- the pressure-sensitive resistance value is a resistance value when a maximum load is applied in an application to be applied.
- the second wiring portion 45 extends from the first end portion 47 of the second connection portion 43 of the second electrode pattern 21B, the first end in the vicinity of the second end portion 39 and the second end portion 49 is used.
- the conduction path (A1 in FIG. 7) of the first connection part 33 and the conduction path of the second connection part 43 Both (C1 in FIG. 7) are long.
- the conduction path (A2 in FIG. 7) is applied so that the first electrode portion 31 and the second electrode portion 41 in the vicinity of the first end portion 37 and the first end portion 47 are conductive (second case).
- connection part 33 and the conduction path (C2 in FIG. 8) of the second connection part 43 are both short.
- electrical_connection path will be the 1st electrode part 31 and the 2nd electrode part 41. Depending on the combination, it will vary greatly. As a result, for example, a resistance difference ⁇ R Ag shown by a dotted line in FIG. 6 occurs.
- the conduction path of the first connection part 33 remains unchanged and the conduction path of the second connection part 43 is shorter than in the second case, Since the resistance of the two wiring portions 45 is added, as a result, the entire conduction path is slightly higher than the conventional one.
- the conduction path of the first connection part 33 remains unchanged, but the conduction path of the second connection part 43 becomes longer, and the resistance of the second wiring part 45 is added thereto.
- the entire conduction path is significantly higher than the conventional one.
- the resistance of the entire conduction path is substantially equal in any combination of the first electrode portion 31 and the second electrode portion 41. For example, substantially the same resistance shown by the solid line in FIG. 6 is generated.
- FIGS. 9 and 10 are plan views showing the electrode pattern of the second example.
- the wiring has a first electrode pattern 21C (an example of a first electrode pattern) and a second electrode pattern 21D (an example of a second electrode pattern).
- the first electrode pattern 21C includes a plurality of first electrode portions 31, a first connecting portion 33, and a first wiring portion 35A.
- the 1st electrode part 31 is a strip
- the first connecting portion 33 extends in the vertical direction in the drawing and connects the left ends of the plurality of first electrode portions 31 in the drawing.
- the first wiring portion 35 ⁇ / b> A extends from the end portion of the first connecting portion 33.
- the lower end of the first connecting portion 33 in the figure is referred to as a first end portion 37, and the upper end in the drawing is referred to as a second end portion 39.
- the first wiring portion 35 ⁇ / b> A extends from the first end portion 37.
- the first wiring portion 35 ⁇ / b> A extends to the detection circuit 5 and has an output end connected to the detection circuit 5.
- the second electrode pattern 21D includes a plurality of second electrode portions 41, a second connecting portion 43, and a second wiring portion 45A.
- the 2nd electrode part 41 is a strip
- the second electrode portions 41 are arranged alternately with the first electrode portions 31.
- the second connecting portion 43 extends in the vertical direction in the drawing and connects the right ends of the plurality of second electrode portions 41 in the drawing.
- the lower end of the second connecting portion 43 in the figure is a first end 47 and the upper end in the figure is a second end 49. That is, the first end 37 and the first end 47 are on the same side, and the second end 39 and the second end 49 are on the same side. In other words, the second end 49 is diagonal to the first end 37.
- the second wiring portion 45 ⁇ / b> A extends from the second end portion 49. More specifically, the second wiring portion 45A starts from the second end portion 49, extends along the first electrode portion 31 on the uppermost side of the drawing, and further along the first connecting portion 33 (that is, in the vicinity). And finally extend parallel to the first wiring portion 35A in the vicinity of the first wiring portion 35A. Thereby, the second wiring portion 45A is longer than the first wiring portion 35A.
- the second wiring portion 45 ⁇ / b> A extends to the detection circuit 5 and has an output end connected to the detection circuit 5.
- the first wiring portion 35 ⁇ / b> A extends from the first end portion 37 of the first connecting portion 33, and the second wiring portion 45 ⁇ / b> A extends from the second end portion 49 of the second connecting portion 43. Therefore, when the adjacent first electrode portion 31 and second electrode portion 41 are in contact with each other via the pressure-sensitive layer 17, the resistance of the entire conduction path is any combination of the first electrode portion 31 and the second electrode portion 41. But it becomes substantially equal. This will be described in more detail below.
- the first point P ⁇ b> 1 is pressed, and the one first electrode part 31 and the one second electrode part 41 are electrically connected via the pressure-sensitive layer 17 of the part.
- the first point P1 is located on the upper side in the drawing, that is, on the second end portion 39 and second end portion 49 side.
- the conduction path A3 in the first electrode pattern 21C from the first point P1 is the first electrode part 31, the first connection part 33, and the first wiring part 35A.
- the conduction path B3 in the second electrode pattern 21D from the first point P1 becomes the second electrode portion 41, the second connecting portion 43, and the second wiring portion 45A.
- the second point P2 when the second point P2 is pressed, one first electrode portion 31 and one second electrode portion 41 are brought into conduction through the pressure-sensitive layer 17 of the portion.
- the second point P2 is located on the lower side of the drawing, that is, on the first end 37 and the first end 47 side.
- the conduction path A4 from the second point P2 to the first electrode pattern 21C is the first electrode part 31, the first connection part 33, and the first wiring part 35A.
- the conduction path B4 from the second point P2 to the second electrode pattern 21D becomes the second electrode portion 41, the second connecting portion 43, and the second wiring portion 45A.
- FIGS. 11 and 12 are plan views showing the electrode pattern of the third example.
- the wiring includes a first electrode pattern 21E (an example of a first electrode pattern) and a second electrode pattern 21F (an example of a second electrode pattern).
- the first electrode pattern 21E includes a plurality of first electrode portions 31, a first connecting portion 33, and a first wiring portion 35B.
- the 1st electrode part 31 is a strip
- the first connecting portion 33 extends in the left-right direction in the drawing and connects the lower ends of the plurality of first electrode portions 31 in the drawing.
- the left end of the first connecting portion 33 in the drawing is a first end portion 37, and the right end in the drawing is a second end portion 39.
- the first wiring portion 35 ⁇ / b> B extends from the first end portion 37.
- the first wiring portion 35 ⁇ / b> B extends to the detection circuit 5 and has an output end connected to the detection circuit 5.
- the second electrode pattern 21F includes a plurality of second electrode portions 41, a second connecting portion 43, and a second wiring portion 45B.
- the 2nd electrode part 41 is a strip
- the second electrode portions 41 are arranged alternately with the first electrode portions 31.
- the 2nd connection part 43 is extended in the left-right direction of the figure, and has connected the figure upper end of the some 2nd electrode part 41.
- the left end of the second connecting portion 43 in the figure is a first end 47 and the right end in the figure is a second end 49. That is, the first end 37 and the first end 47 are on the same side, and the second end 39 and the second end 49 are on the same side. In other words, the second end 49 is diagonal to the first end 37.
- the second wiring portion 45 ⁇ / b> B extends from the second end portion 49. More specifically, the second wiring portion 45B starts from the second end portion 49, extends along the second connecting portion 43 (that is, through the vicinity), and further, the leftmost first electrode portion 31 in the drawing. And finally extend parallel to the first wiring part 35B in the vicinity of the first wiring part 35B. Thereby, the second wiring part 45B is longer than the first wiring part 35B.
- the second wiring portion 45 ⁇ / b> B extends to the detection circuit 5 and has an output end connected to the detection circuit 5.
- the first wiring portion 35 ⁇ / b> B extends from the first end portion 37 of the first connecting portion 33, and the second wiring portion 45 ⁇ / b> B extends from the second end portion 49 of the second connecting portion 43. Therefore, when the adjacent first electrode portion 31 and second electrode portion 41 are in contact with each other via the pressure-sensitive layer 17, the resistance of the entire conduction path is any combination of the first electrode portion 31 and the second electrode portion 41. But it becomes substantially equal.
- the first point P ⁇ b> 1 is pressed, and one first electrode portion 31 and one second electrode portion 41 are electrically connected through the pressure-sensitive layer 17 of the portion.
- the first point P1 is located on the right side of the drawing, that is, on the second end portion 39 and second end portion 49 side.
- the conduction path A5 in the first electrode pattern 21E from the first point P1 becomes the first electrode part 31, the first connection part 33, and the first wiring part 35B.
- route B5 in the 2nd electrode pattern 21F from the 1st point P1 becomes the 2nd electrode part 41, the 2nd connection part 43, and the 2nd wiring part 45B.
- the second point P2 when the second point P2 is pressed, one first electrode portion 31 and one second electrode portion 41 are brought into conduction through the pressure-sensitive layer 17 of the portion.
- the second point P2 is located on the left side of the drawing, that is, on the first end 37 and first end 47 side.
- the conduction path A6 in the first electrode pattern 21E from the second point P2 is the first electrode part 31, the first connection part 33, and the first wiring part 35B.
- route B6 in the 2nd electrode pattern 21F from the 2nd point P2 becomes the 2nd electrode part 41, the 2nd connection part 43, and the 2nd wiring part 45B.
- FIGS. 13 and 14 are plan views showing electrode patterns of the fourth example.
- the wiring 51 and the wiring 53 are provided.
- the wiring 51 and the wiring 53 are formed at different positions on the same surface of the same film.
- the wiring 51 includes a first electrode pattern 21G (an example of a first electrode pattern) and a second electrode pattern 21H (an example of a second electrode pattern).
- the wiring 53 has a first electrode pattern 21G (an example of a third electrode pattern) and a second electrode pattern 21H (an example of a fourth electrode pattern).
- the first electrode pattern 21G includes a plurality of first electrode portions 31, a first connection portion 33, and a first wiring portion 35C.
- the 1st electrode part 31 is a strip
- the first connecting portion 33 extends in the vertical direction in the drawing and connects the right ends of the plurality of first electrode portions 31 in the drawing.
- the lower end of the first connecting portion 33 in the figure is referred to as a first end portion 37, and the upper end in the drawing is referred to as a second end portion 39.
- the first wiring portion 35 ⁇ / b> C extends from the first end portion 37.
- the first wiring portion 35 ⁇ / b> C extends to the detection circuit 5 and has an output end connected to the detection circuit 5.
- the second electrode pattern 21H includes a plurality of second electrode portions 41, a second connecting portion 43, and a second wiring portion 45C.
- the 2nd electrode part 41 is a strip
- the second electrode portions 41 are arranged alternately with the first electrode portions 31.
- the second connecting portion 43 extends in the vertical direction in the drawing and connects the left ends of the plurality of second electrode portions 41 in the drawing.
- the lower end of the second connecting portion 43 in the figure is a first end 47 and the upper end in the figure is a second end 49. That is, the first end 37 and the first end 47 are on the same side, and the second end 39 and the second end 49 are on the same side. In other words, the second end 49 is diagonal to the first end 37.
- the second wiring portion 45 ⁇ / b> C extends from the second end portion 49. More specifically, the second wiring portion 45C starts from the second end portion 49, extends along the uppermost first electrode portion 31 in FIG. 5, and further along the first connecting portion 33 (that is, in the vicinity). And finally extend in parallel with the first wiring part 35B in the vicinity of the first wiring part 35B. As a result, the second wiring portion 45C is longer than the first wiring portion 35C.
- the second wiring portion 45 ⁇ / b> C extends to the detection circuit 5 and has an output end connected to the detection circuit 5.
- the first wiring portion 35 ⁇ / b> C extends from the first end portion 37 of the first connecting portion 33, and the second wiring portion 45 ⁇ / b> C extends from the second end portion 49 of the second connecting portion 43. Therefore, when the adjacent first electrode portion 31 and second electrode portion 41 are in contact with each other via the pressure-sensitive layer 17, the resistance of the entire conduction path is any combination of the first electrode portion 31 and the second electrode portion 41. But it becomes substantially equal. This will be described in more detail below.
- the first point P1 is pressed, and one first electrode portion 31 and one second electrode portion 41 are brought into conduction through the pressure-sensitive layer 17 of the portion.
- the first point P1 is located on the upper side in the drawing, that is, on the second end 39 and second end 49 side.
- the conduction path A7 in the first electrode pattern 21G from the first point P1 becomes the first electrode part 31, the first connection part 33, and the first wiring part 35C.
- route B7 in the 2nd electrode pattern 21H from the 1st point P1 becomes the 2nd electrode part 41, the 2nd connection part 43, and the 2nd wiring part 45C.
- the second point P2 when the second point P2 is pressed, one first electrode portion 31 and one second electrode portion 41 are brought into conduction through the pressure-sensitive layer 17 of the portion.
- the second point P2 is located on the lower side of the drawing, that is, on the first end 37 and the first end 47 side.
- the conduction path A8 in the first electrode pattern 21G from the second point P2 becomes the first electrode part 31, the first connection part 33, and the first wiring part 35C.
- route B8 in the 2nd electrode pattern 21H from the 2nd point P2 becomes the 2nd electrode part 41, the 2nd connection part 43, and the 2nd wiring part 45C.
- the lengths of the entire conduction paths (A7 + B7 and A8 + B8) are substantially equal. Since the wiring 53 has the same structure as the wiring 51, the same function can be obtained. With the above configuration, unlike the above-described embodiment, four wiring portions (two first wiring portions 35C and two second wiring portions 45C) extend to the detection circuit 5.
- FIG. 15 is a plan view showing an electrode pattern of a fifth example.
- the basic structure is the same as in the fourth example.
- the first wiring part 35C (an example of the first wiring part) of the first electrode pattern 21G (an example of the first electrode pattern) of the wiring 51 and the first electrode pattern 21G (an example of the third electrode pattern) of the wiring 53 are different.
- the first wiring part 35C (an example of the third wiring part) is shared.
- the number of wiring portions can be reduced from four to three (one first wiring portion 35D and two second wiring portions 45C), thereby reducing the wiring portion material and occupied area.
- the number of control signals on the IC side required for control can be reduced.
- FIG. 16 is a plan view showing an electrode pattern of a sixth example.
- the wiring 61, the wiring 63, the wiring 65, and the wiring 67 are formed at different positions on the same surface of the same film.
- the wiring 61 and the wiring 65 are arrange
- the wiring 63 and the wiring 67 are arrange
- the wiring 61 includes a first electrode pattern 21I (an example of a first electrode pattern) and a second electrode pattern 21J (an example of a second electrode pattern).
- the wiring 63 has a first electrode pattern 21I (an example of a third electrode pattern) and a second electrode pattern 21J (an example of a fourth electrode pattern).
- the first electrode pattern 21I includes a plurality of first electrode portions 31, a first connecting portion 33, and a first wiring portion 35D.
- the plurality of first electrode portions 31 have a strip shape or a strip shape extending in the left-right direction in the drawing, and are arranged at intervals in the vertical direction in the drawing.
- the first connecting portion 33 extends in the vertical direction in the drawing and connects the right ends of the plurality of first electrode portions 31 in the drawing.
- the lower end of the first connecting portion 33 in the figure is referred to as a first end portion 37, and the upper end in the drawing is referred to as a second end portion 39.
- the first wiring portion 35 ⁇ / b> D extends from the first end portion 37.
- the first wiring portion 35 ⁇ / b> D extends to the detection circuit 5 and has an output end connected to the detection circuit 5.
- the second electrode pattern 21J includes a plurality of second electrode portions 41, a second connecting portion 43, and a second wiring portion 45D.
- the plurality of second electrode portions 41 have a strip shape or a strip shape extending in the left-right direction in the drawing, and are arranged at intervals in the vertical direction in the drawing.
- the second electrode portions 41 are arranged alternately with the first electrode portions 31.
- the second connecting portion 43 extends in the vertical direction in the drawing and connects the left ends of the plurality of second electrode portions 41 in the drawing.
- the lower end of the second connecting portion 43 in the figure is a first end 47 and the upper end in the figure is a second end 49. That is, the first end 37 and the first end 47 are on the same side, and the second end 39 and the second end 49 are on the same side. In other words, the second end 49 is diagonal to the first end 37.
- the second wiring portion 45 ⁇ / b> D extends from the second end portion 49. More specifically, the second wiring portion 45D starts from the second end portion 49, extends along the uppermost first electrode portion 31 in the drawing, and further along the first connecting portion 33 (that is, in the vicinity). Through) and further along the first wiring portion 35D. Thereby, the second wiring part 45D is longer than the first wiring part 35D.
- the second wiring portion 45 ⁇ / b> D extends to the detection circuit 5 and has an output end connected to the detection circuit 5.
- the first wiring portion 35 ⁇ / b> D extends from the first end portion 37 of the first connection portion 33, and the second wiring portion 45 ⁇ / b> D extends from the second end portion 49 of the second connection portion 43. Yes. Therefore, when the adjacent first electrode portion 31 and second electrode portion 41 are in contact with each other via the pressure sensitive layer 17, the resistance between the output end of the first wiring portion 35D and the output end of the second wiring portion 45D is reduced. Any combination of the first electrode portion 31 and the second electrode portion 41 is substantially equal. Note that the wiring 63, the wiring 65, and the wiring 67 have the same structure as that of the wiring 61, and thus a similar function is obtained.
- the second wiring part 45D (an example of the second wiring part) of the second electrode pattern 21J (an example of the second electrode pattern) of the wiring 61 is the second electrode pattern 21J (a fourth electrode pattern) of the wiring 63.
- the second wiring part 45D (an example of the fourth wiring part) is common to the second wiring part 45D (an example of the fourth wiring part).
- the second wiring part 45 ⁇ / b> D of the wiring 65 is common to the second wiring part 45 ⁇ / b> D of the wiring 67.
- the eight wiring portions are originally six (four first wiring portions 35D and two second wiring portions 45D). Further, in this embodiment, the number of wiring portions provided in the left and right frame regions is three.
- FIG. 17 is a plan view showing an electrode pattern of a seventh example.
- the wiring 71, the wiring 73, the wiring 75, and the wiring 77 are provided.
- the wiring 71, the wiring 73, the wiring 75, and the wiring 77 are formed at different positions on the same surface of the same film.
- the wiring 71 and the wiring 75 are arrange
- the wiring 73 and the wiring 77 are arrange
- the wiring 71 will be described.
- the wiring 71 includes a first electrode pattern 21K (an example of a first electrode pattern) and a second electrode pattern 21L (an example of a second electrode pattern).
- the wiring 73 has a first electrode pattern 21K (an example of a third electrode pattern) and a second electrode pattern 21L (an example of a fourth electrode pattern).
- the first electrode pattern 21K includes a plurality of first electrode portions 31, a first connection portion 33, and a first wiring portion 35E.
- the 1st electrode part 31 is a strip
- the first connecting portion 33 extends in the vertical direction in the drawing and connects the left ends of the plurality of first electrode portions 31 in the drawing.
- the lower end of the first connecting portion 33 in the figure is referred to as a first end portion 37, and the upper end in the drawing is referred to as a second end portion 39.
- the first wiring part 35 ⁇ / b> E extends from the first end part 37.
- the first wiring portion 35 ⁇ / b> E extends to the detection circuit 5 and has an output end connected to the detection circuit 5.
- the second electrode pattern 21L includes a plurality of second electrode portions 41, a second connecting portion 43, and a second wiring portion 45E.
- the 2nd electrode part 41 is a strip
- the second electrode portions 41 are arranged alternately with the first electrode portions 31.
- the second connecting portion 43 extends in the vertical direction in the drawing and connects the right ends of the plurality of second electrode portions 41 in the drawing.
- the lower end of the second connecting portion 43 in the figure is a first end 47 and the upper end in the figure is a second end 49. That is, the first end 37 and the first end 47 are on the same side, and the second end 39 and the second end 49 are on the same side. In other words, the second end 49 is diagonal to the first end 37.
- the second wiring portion 45E extends from the second end portion 49. More specifically, the second wiring portion 45E starts from the second end portion 49, extends along the second connecting portion 43 (that is, through the vicinity), and further along the second connecting portion 43 of the wiring 73. (That is, through the vicinity), and finally extends in the vicinity of the first wiring part 35E in parallel with the first wiring part 35E. Thereby, the second wiring part 45E is longer than the first wiring part 35E.
- the second wiring portion 45E extends to the detection circuit 5 and has an output end connected to the detection circuit 5.
- the first wiring part 35 ⁇ / b> E extends from the first end part 37 of the first connection part 33, and the second wiring part 45 ⁇ / b> E extends from the second end part 49 of the second connection part 43.
- the resistance of the entire conduction path is any combination of the first electrode portion 31 and the second electrode portion 41. But it becomes substantially equal.
- the wiring 73, the wiring 75, and the wiring 77 have the same structure as that of the wiring 71, and thus the same function is obtained.
- the first wiring part 35E (an example of the first wiring part) of the first electrode pattern 21K (an example of the first electrode pattern) of the wiring 71 is the first electrode pattern 21K (a third electrode pattern) of the wiring 73.
- the first wiring portion 35E (an example of the third wiring portion), the first wiring portion 35E of the first electrode pattern 21K of the wiring 75, and the first wiring portion 35E of the first electrode pattern 21K of the wiring 77. is there.
- the eight wiring portions are originally five (one first wiring portion 35E and four second wiring portions 45E). In this embodiment, the number of wiring portions provided in the left and right frame regions is four.
- FIG. 18 is a plan view showing an electrode pattern of an eighth example.
- the wiring 81, the wiring 83, the wiring 85, and the wiring 87 are formed at different positions on the same surface of the same film. Note that the wiring 81 and the wiring 85 are arranged on the side far from the output end of the wiring unit, and the wiring 83 and the wiring 87 are arranged on the side near the output end of the wiring unit.
- the wiring 81 and the wiring 83 will be described.
- the wiring 81 has a first electrode pattern 21M (an example of a first electrode pattern) and a second electrode pattern 21N (an example of a second electrode pattern).
- the wiring 83 includes a first electrode pattern 21M (an example of a third electrode pattern) and a second electrode pattern 21N (an example of a fourth electrode pattern).
- the first electrode pattern 21M includes a plurality of first electrode portions 31, a first connecting portion 33, and a first wiring portion 35F.
- the plurality of first electrode portions 31 have a strip shape or a strip shape extending in the left-right direction in the drawing, and are arranged at intervals in the vertical direction in the drawing.
- the first connecting portion 33 extends in the vertical direction in the drawing and connects the right ends of the plurality of first electrode portions 31 in the drawing.
- the lower end of the first connecting portion 33 in the figure is referred to as a first end portion 37, and the upper end in the drawing is referred to as a second end portion 39.
- the first wiring part 35 ⁇ / b> F extends from the first end part 37.
- the first wiring portion 35F extends through the right side of the first wiring portion 35F of the second wiring 83 in the drawing.
- the first wiring portion 35 ⁇ / b> F extends to the detection circuit 5 and has an output end connected to the detection circuit 5.
- the second electrode pattern 21N includes a plurality of second electrode portions 41, a second connecting portion 43, and a second wiring portion 45F.
- the plurality of second electrode portions 41 have a strip shape or a strip shape extending in the left-right direction in the drawing, and are arranged at intervals in the vertical direction in the drawing.
- the second electrode portions 41 are arranged alternately with the first electrode portions 31.
- the second connecting portion 43 extends in the vertical direction in the drawing and connects the left ends of the plurality of second electrode portions 41 in the drawing.
- the lower end of the second connecting portion 43 in the figure is a first end 47 and the upper end in the figure is a second end 49. That is, the first end 37 and the first end 47 are on the same side, and the second end 39 and the second end 49 are on the same side. In other words, the second end 49 is diagonal to the first end 37.
- the second wiring portion 45F extends from the second end portion 49. More specifically, the second wiring portion 45F starts from the second end portion 49, extends upward in the drawing, extends along the second connecting portion 43 (that is, passes through the vicinity), and further, the wiring 83. Extending along the second connecting portion 43 (that is, passing through the vicinity), and finally extending in the vicinity of the first wiring portion 35F in parallel with the first wiring portion 35F. Thereby, the second wiring part 45F is longer than the first wiring part 35F.
- the second wiring portion 45F extends to the detection circuit 5 and has an output terminal connected to the detection circuit 5.
- the second wiring portion 45F extends between the wiring 81 and the wiring 85, and further between the wiring 83 and the wiring 87, and extends long to a position adjacent to each second connecting portion 43. .
- the first wiring portion 35 ⁇ / b> F extends from the first end portion 37 of the first connection portion 33, and the second wiring portion 45 ⁇ / b> F extends from the second end portion 49 of the second connection portion 43.
- the resistance of the entire conduction path is any combination of the first electrode portion 31 and the second electrode portion 41. But it becomes substantially equal.
- the wiring 83, the wiring 85, and the wiring 87 have the same structure as the wiring 81, and thus a similar function is obtained.
- the second wiring part 45F (an example of the second wiring part) of the second electrode pattern 21N (an example of the second electrode pattern) of the wiring 81 is the second electrode pattern 21N (a fourth electrode pattern) of the wiring 83.
- the second wiring portion 45F (an example of the fourth wiring portion), the second wiring portion 45F of the second electrode pattern 21N of the wiring 85, and the second wiring portion 45F of the second electrode pattern 21N of the wiring 87. is there.
- the eight wiring portions are originally five (four first wiring portions 35F and one second wiring portion 45F). In this embodiment, the number of wiring portions provided in the left and right frame regions is two.
- FIG. 19 is a plan view showing an electrode pattern of a ninth example.
- the wiring 91, the wiring 93, the wiring 95, and the wiring 97 are provided.
- the wiring 91, the wiring 93, the wiring 95, and the wiring 97 are formed at different positions on the same surface of the same film. Note that the wiring 91 and the wiring 95 are arranged on the side far from the output end of the wiring unit, and the wiring 93 and the wiring 97 are arranged on the side near the output end of the wiring unit.
- the wiring 91 and the wiring 93 will be described.
- the wiring 91 includes a first electrode pattern 21O (an example of a first electrode pattern) and a second electrode pattern 21P (an example of a second electrode pattern).
- the wiring 93 includes a first electrode pattern 21O (an example of a third electrode pattern) and a second electrode pattern 21P (an example of a fourth electrode pattern).
- the first electrode pattern 21O includes a plurality of first electrode portions 31, a first connecting portion 33, and a first wiring portion 35G.
- the plurality of first electrode portions 31 have a strip shape or a strip shape extending in the vertical direction in the drawing, and are arranged at intervals in the horizontal direction in the drawing.
- the first connecting portion 33 extends in the left-right direction in the drawing and connects the lower ends of the plurality of first electrode portions 31 in the drawing.
- the left end of the first connecting portion 33 in the drawing is a first end portion 37, and the right end in the drawing is a second end portion 39.
- the first wiring part 35G extends from the first end part 37. Specifically, the first wiring portion 35G is arranged along the left side of the third wiring 93 in the drawing (that is, close to it).
- the first wiring portion 35 ⁇ / b> G extends to the detection circuit 5 and has an output end connected to the detection circuit 5.
- the second electrode pattern 21P includes a plurality of second electrode portions 41, a second connecting portion 43, and a second wiring portion 45G.
- the plurality of second electrode portions 41 have a strip shape or a strip shape extending in the vertical direction in the drawing, and are arranged at intervals in the horizontal direction in the drawing.
- the second electrode portions 41 are arranged alternately with the first electrode portions 31.
- the 2nd connection part 43 is extended in the left-right direction of the figure, and has connected the figure upper end of the some 2nd electrode part 41.
- the left end of the second connecting portion 43 in the figure is a first end 47 and the right end in the figure is a second end 49. That is, the first end 37 and the first end 47 are on the same side, and the second end 39 and the second end 49 are on the same side. In other words, the second end 49 is diagonal to the first end 37.
- the second wiring portion 45G extends from the second end portion 49. More specifically, the second wiring portion 45G starts from the second end portion 49, extends along the rightmost first electrode portion 31 (that is, passes through the vicinity), and further, the second wiring portion of the wiring 93. It extends along the portion 45G (that is, through the vicinity), and finally extends in the vicinity of the first wiring portion 35G in parallel with the first wiring portion 35G. Thereby, the second wiring part 45G is longer than the first wiring part 35G.
- the second wiring portion 45G extends to the detection circuit 5 and has an output terminal connected to the detection circuit 5.
- the first wiring portion 35 ⁇ / b> G extends from the first end portion 37 of the first connecting portion 33, and the second wiring portion 45 ⁇ / b> G extends from the second end portion 49 of the second connecting portion 43.
- the resistance of the entire conduction path is any combination of the first electrode portion 31 and the second electrode portion 41. But it becomes substantially equal.
- the wiring 93, the wiring 95, and the wiring 97 have the same structure as that of the wiring 91, and thus a similar function can be obtained.
- the first wiring part 35G (an example of the first wiring part) of the first electrode pattern 21O (an example of the first electrode pattern) of the wiring 91 is the first electrode pattern 21O (a third electrode pattern) of the wiring 93.
- 1st wiring portion 35G (an example of a third wiring portion), a first wiring portion 35G of the first electrode pattern 21O of the wiring 95, and a first wiring portion 35G of the first electrode pattern 21O of the wiring 97. is there.
- the eight wiring portions are originally five (one first wiring portion 35G and four second wiring portions 45G).
- the second wiring portion 45G of the wiring 93 has a shape that is folded back multiple times in order to increase the distance. In this embodiment, the number of wiring portions provided in the left and right frame regions is two.
- FIG. 20 is a plan view showing an electrode pattern of a tenth example.
- the wiring 201, the wiring 203, the wiring 205, and the wiring 207 are formed at different positions on the same surface of the same film. Note that the wiring 201 and the wiring 2055 are arranged on the side far from the output end of the wiring unit, and the wiring 203 and the wiring 207 are arranged on the side near the output end of the wiring unit.
- the wiring 201 and the wiring 203 will be described.
- the wiring 201 includes a first electrode pattern 21Q (an example of a first electrode pattern) and a second electrode pattern 21R (an example of a second electrode pattern).
- the wiring 203 has a first electrode pattern 21Q (an example of a third electrode pattern) and a second electrode pattern 21R (an example of a fourth electrode pattern).
- the first electrode pattern 21Q includes a plurality of first electrode portions 31, a first connection portion 33, and a first wiring portion 35H.
- the plurality of first electrode portions 31 have a strip shape or a strip shape extending in the vertical direction in the drawing, and are arranged at intervals in the horizontal direction in the drawing.
- the first connecting portion 33 extends in the left-right direction in the drawing and connects the lower ends of the plurality of first electrode portions 31 in the drawing.
- the left end of the first connecting portion 33 in the drawing is a first end portion 37, and the right end in the drawing is a second end portion 39.
- the first wiring portion 35 ⁇ / b> H extends from the first end portion 37.
- the first wiring portion 35 ⁇ / b> H extends to the detection circuit 5 and has an output end connected to the detection circuit 5.
- the second electrode pattern 21R includes a plurality of second electrode portions 41, a second connecting portion 43, and a second wiring portion 45H.
- the plurality of second electrode portions 41 have a strip shape or a strip shape extending in the vertical direction in the drawing, and are arranged at intervals in the horizontal direction in the drawing.
- the second electrode portions 41 are arranged alternately with the first electrode portions 31.
- the 2nd connection part 43 is extended in the left-right direction of the figure, and has connected the figure upper end of the some 2nd electrode part 41.
- the left end of the second connecting portion 43 in the figure is a first end 47 and the right end in the figure is a second end 49. That is, the first end 37 and the first end 47 are on the same side, and the second end 39 and the second end 49 are on the same side. In other words, the second end 49 is diagonal to the first end 37.
- the second wiring portion 45 ⁇ / b> H extends from the second end portion 49. More specifically, the second wiring portion 45H starts from the second end portion 49 and extends along the first electrode portion 31 on the rightmost side of the drawing (that is, through the vicinity), and further on the rightmost side of the wiring 203 in the drawing. It extends along the first electrode part 31 (that is, through the vicinity), and finally extends in the vicinity of the first wiring part 35H in parallel with the first wiring part 35H. Thereby, the second wiring part 45H is longer than the first wiring part 35H.
- the second wiring portion 45H extends to the detection circuit 5 and has an output terminal connected to the detection circuit 5.
- the 1st wiring 201 and the 2nd wiring 203 are axisymmetric, and 1st connection part 33 is common.
- the third wiring 205 and the fourth wiring 207 are axisymmetric, and the first connecting portions 33 are common.
- the first wiring portion 35 ⁇ / b> H extends from the first end portion 37 of the first connecting portion 33, and the second wiring portion 45 ⁇ / b> H extends from the second end portion 49 of the second connecting portion 43.
- the resistance of the entire conduction path is any combination of the first electrode portion 31 and the second electrode portion 41. But it becomes substantially equal.
- the wiring 203, the wiring 205, and the wiring 207 have the same structure as the wiring 201, and thus have the same function.
- the first wiring part 35H (an example of the first wiring part) of the first electrode pattern 21Q (an example of the first electrode pattern) of the wiring 201 is the first electrode pattern 21Q (a third electrode pattern) of the wiring 203.
- the first wiring portion 35H (an example of the third wiring portion), the first wiring portion 35H of the first electrode pattern 21Q of the wiring 205, and the first wiring portion 35H of the first electrode pattern 21Q of the wiring 207. is there.
- the eight wiring portions are originally five (one first wiring portion 35H and four second wiring portions 45H).
- the second wiring portion 45H of the wiring 203 has a shape that is folded back multiple times in order to increase the distance. Further, in this embodiment, the number of wiring portions provided in the left and right frame regions is one by one.
- FIG. 21 is a schematic cross-sectional view of a display device to which a pressure sensitive sensor is applied.
- the display device 101 includes a housing 103.
- the housing 103 has an open shape on the upper side in the figure.
- the display device 101 has a glass 105.
- the lower surface of the glass 105 is fixed on the frame portion of the housing 103 by an adhesive layer 107.
- a space is secured between the glass 105 and the housing 103.
- the display device 101 includes an LCD module 109.
- the LCD module 109 is provided on the lower surface of the glass 105.
- the display device 101 includes a pressure sensitive sensor 111.
- the pressure sensor 111 is the same as the pressure sensor 3 described above.
- the display device 101 includes a cushion material 113.
- the cushion material 113 is provided between the pressure-sensitive sensor 111 and the bottom surface of the housing 103.
- the cushion material 113 is made of an elastically deformable material.
- the cushion material 113 may be provided only on the upper side of the pressure-sensitive sensor 111, or may be provided on both upper and lower sides of the pressure-sensitive sensor 111.
- the pressing force acts on the glass 105
- the pressing force acts on the pressure-sensitive sensor 111 via the LCD module 109.
- the pressure sensor 111 detects the pressing force.
- an OLED may be used instead of the LCD module.
- the intervals between the electrode portions are expressed as equal intervals, but it is natural that this does not limit the present invention.
- the shape of the electrode portion is expressed as a straight line, but it is natural that this does not limit the present invention.
- the present invention can be widely applied to a pressure-sensitive sensor in which a pressure-sensitive layer and a pair of electrode patterns are arranged to face each other through a space.
- Sensor device 3 Pressure sensor 5: Detection circuit 7: Control unit 9: Upper layer 11: Lower layer 13: Intermediate adhesive layer 15: Upper film 17: Pressure sensitive layer 19: Lower film 21: Wiring 21A: First 1 electrode pattern 21B: 2nd electrode pattern 31: 1st electrode part 33: 1st connection part 35: 1st wiring part 37: 1st edge part 39: 2nd edge part 41: 2nd electrode part 43: 2nd connection Part 45: Second wiring part 47: First end part 49: Second end part
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Abstract
Description
特許文献1に記載の圧力センサ1は、感圧用薄膜3と、電極41,42とを有しており、両者が空間を介して対向している。図11に示す電極41,42は櫛歯形状になっている。押圧力が加えられると、電極41,42の一対の櫛歯同士が感圧用薄膜3を介して接続される。これにより、電極41,42及び接触位置における感圧用薄膜3の抵抗の値に基づいて、圧力検出部が押圧力を検出する。
なお、押圧位置が異なる場合には、押圧力の大きさに関わりなく、電極配線の導通経路の長さが大きく異なることがある。したがって同じ押圧力であっても、押圧位置によっては全体の導通経路の抵抗が異なってしまう。ただし、一般的なメンブレンスイッチ代替用の感圧センサの場合は、上記の接触抵抗が電極配線の導通経路の抵抗より十分に大きかったので、電極配線の導通経路の抵抗の変動は無視しても問題が少なかった。
一方、大型化された感圧センサでは、電極配線の導通経路の抵抗の割合が大きくなるので、その違いによって、押圧力に対する抵抗検出値が大きく異なるおそれがある。
第2絶縁基材は、第1絶縁基材との間に空間を介して配置されている。
感圧導電体は、第1絶縁基材の第2絶縁基材側の面全体に形成されている。
第1電極パターンは、第2絶縁基材の第1絶縁基材側の面に形成され、複数の第1電極と、複数の第1電極の一端同士を連結するように延び第1端部を有する第1連結部と、第1連結部の第1端部から延びる第1配線部とを有する。
第2電極パターンは、第2絶縁基材の第1絶縁基材側の面に形成され、第1電極と交互に配置された複数の第2電極と、複数の第2電極の一端同士を連結するように延び第1端部に対して対角にある第2端部を有する第2連結部と、第2連結部の第2端部から延びる第2配線部とを有する。
第2配線部は、隣接する第1電極及び第2電極が感圧導電体を介して導通した場合に第1配線部の出力端と第2配線部の出力端との間の導通経路の抵抗が第1電極と第2電極のいずれの組み合わせでも実質的に等しくなるように延びる。
なお、「端部から延びる」とは、端における所定の長さ部分のいずれかから延びていることを意味する(以下、同じ)。
従来であれば、第2配線部が第2電極パターンの第2連結部の第1端部から延びているので、第2端部の近傍の第1電極と第2電極が導通するように押圧力が作用した場合(第1の場合)、第1連結部の導通経路及び第2連結部の導通経路は共に長い。それに対して、第1端部の近傍の第1電極と第2電極が導通するように押圧力が作用した場合(第2の場合)、第1連結部の導通経路及び第2連結部の導通経路は共に短い。このように連結部の導通経路の合計が第1の場合と第2の場合とで異なることで、導通経路全体の抵抗が、第1電極と第2電極の組み合わせによっては、大きく異なってしまう。
それに対して、本発明では、第1の場合は、第1連結部の導通経路が変わらず長いままであり、第2連結部の導通経路が第1の場合に比べて短くなるが、そこに第2配線部の抵抗が加わるので、結果的に、導通経路全体の抵抗が従来に比べてわずかに高くなる。さらに、第2の場合、第1連結部の導通経路が変わらず短いままであるが、第2連結部の導通経路が長くなり、そこに第2配線部の抵抗が加わるので、結果的に、導通経路全体の抵抗が従来に比べて大幅に高くなる。その結果、導通経路全体の抵抗が、第1電極と第2電極のいずれの組み合わせの場合でも、実質的に等しくなる。
第2絶縁基材は、第1絶縁基材との間に空間を介して配置されている。
感圧導電体は、第1絶縁基材の第2絶縁基材側の面全体に形成されている。
第1電極パターンは、第2絶縁基材の第1絶縁基材側の面に形成され、複数の第1電極と、複数の第1電極の一端同士を連結するように延び第1端部を有する第1連結部と、第1連結部の第1端部から延びる第1配線部とを有する。
第2電極パターンは、第2絶縁基材の第1絶縁基材側の面に形成され、第1電極と交互に配置された複数の第2電極と、複数の第2電極の一端同士を連結するように延び第1端部に対して対角にある第2端部を有する第2連結部と、第2連結部の第2端部から延びる第2配線部とを有する。
第2配線部は、隣接する第1電極及び第2電極が感圧導電体を介して導通した場合に第1配線部の出力端と第2配線部の出力端との間の導通経路の抵抗が第1電極と第2電極のいずれの組み合わせでも実質的に等しくなるように延びる。
第3電極パターンは、第2絶縁基材の第1絶縁基材側の面に形成され、複数の第3電極と、複数の第3電極の一端同士を連結するように延びる第3連結部と、第3連結部の第3端部から延びる第3配線部とを有する。
第4電極パターンは、第2絶縁基材の第1絶縁基材側の面に形成され、第3電極と交互に配置された複数の第4電極と、複数の第4電極の一端同士を連結するように延び第3端部に対して対角にある第4端部を有する第4連結部と、第4連結部の第4端部から延びる第4配線部とを有する。
第4配線部は、隣接する第3電極及び第4電極が感圧導電体を介して導通した場合に第3配線部の出力端と第4配線部の出力端との間の導通経路の抵抗が第3電極と第4電極のいずれの組み合わせでも実質的に等しくなるように延びる。
(1)センサ装置全体の構成
図1を用いて、感圧センサ3を含んだセンサ装置1を説明する。図1は、本発明に係る感圧センサの構成を示す模式図である。なお、図1の断面図はあくまでも層同士の概略位置関係を示しているだけであって、厳密に実際の構成を再現していない。
センサ装置1は、押圧力を検出するための装置である。センサ装置1は、感圧センサ3を有する。感圧センサ3は、押圧力を受けたときの抵抗の変化を検出するセンサである。
上側層9は、上部フィルム15(第1絶縁基材の一例)と、感圧層17(感圧導電体の一例)とを有する。上部フィルム15は、例えば人間の指からの押圧力が作用する層である。感圧層17は、上部フィルム15の下面(つまり、下部フィルム19側の面)に形成されている。感圧層17は上部フィルム15の下面に全面的に形成されている。「全面的に形成されている」とは、後述する電極との接触において必要な箇所全体にベタ形成されている、という意味である。
中間接着層13は、上側層9と下側層11との間に挟まれた枠形状部分であり、上述の空気層29を確保している。中間接着層13は、絶縁層23と、絶縁層25と、接着層27とを有する。絶縁層23は、上側層9の下面に設けられている。絶縁層25は下側層11の上面に設けられている。接着層27は絶縁層23と絶縁層25との間に配置され、両者を接着している。これにより、上側層9と下側層11とが絶縁状態で固定されている。
なお、絶縁層23は省略されてもよい。
センサ装置1は、制御部7を有する。制御部7は、検出回路5を制御すると共に、検出回路5からの出力を他の装置に送信したり、ディスプレイに表示したりするための装置である。制御部7は、CPU,RAM,ROMを含むコンピュータである。
図2~図4を用いて、感圧センサ3を詳細に説明する。図2は、感圧センサの側面図である。図3は、感圧センサの平面図である。図4は、図3のII-II断面図である。
図2及び図3に示すように、下部フィルム19は、上部フィルム15と対向する部分からさらに延びる延長部30を有する。延長部30は、第1配線部35及び第2配線部45(後述)を有する。以上に述べたように、感圧センサ3のセンサ出力は片面取り出し方式である。
さらに、図3及び図4に示すように、配線21は、一対の櫛歯形状の電極パターン(後述)からなる。
一例として、スクリーン印刷を用いる場合は、銀インキが材料であり、配線幅は30~500μmであり、厚みは1~100μmである。他の例として、フォトリソグラフィの場合は、材料は銅であり、配線幅が10~300μmであり、厚みは20~1000nmである。
感圧層17の塗布方法としては、スクリーン印刷、オフセット印刷、グラビア印刷、又はフレキソ印刷などの印刷法を用いることができる。
絶縁層23、25は、例えば、ポリオール樹脂系、イソシアネート樹脂系、メチレン樹脂系、アクリル樹脂系、ウレタン樹脂系やシリコーン樹脂系の材料が用いられる。接着層27は、例えば、アクリル樹脂系、ウレタン樹脂系やシリコーン樹脂系の粘着剤である。
図5を用いて、検出回路5による抵抗の検出原理を説明する。図5は、抵抗測定の原理を示す模式図である。検出回路5は、直流電源22と、抵抗計24とを有しており、これらは直列に接続され、さらにその両端に配線21の一対の電極パターンが接続されている。これにより、図5に示すように押圧力によって感圧層17が一対の電極に接触すれば、一対の電極同士が感圧層17を介して導通する(詳細は後述)。これにより、抵抗計24が抵抗を測定可能になる。なお、押圧力が増加すれば、感圧層17と一対の電極との接触抵抗が減少する。その結果、押圧力の大きさを正確に測定できる。
図7及び図8を用いて、配線の第1例の構成を説明する。図7及び図8は、第1例の電極パターンを示す平面図である。
配線は、第1電極パターン21A(第1電極パターンの一例)と、第2電極パターン21B(第2電極パターンの一例)とを有する。
第1配線部35は、第1端部37から延びている。第1配線部35は、検出回路5まで延びており、検出回路5に接続される出力端を有する。
この感圧センサ3では、第1配線部35が第1連結部33の第1端部37から延び、第2配線部45が第2連結部43の第2端部49から延びている。したがって、隣接する第1電極部31及び第2電極部41が感圧層17を介して接触した場合に、第1配線部35の出力端と第2配線部45の出力端との間(導通経路全体)の抵抗が、第1電極部31と第2電極部41のいずれの組み合わせでも実質的に等しくなる。以下、さらに詳細に説明する。
図9及び図10を用いて、配線の第2例の構成を説明する。図9及び図10は、第2例の電極パターンを示す平面図である。
配線は、第1電極パターン21C(第1電極パターンの一例)と、第2電極パターン21D(第2電極パターンの一例)とを有する。
第1配線部35Aは、第1端部37から延びている。第1配線部35Aは、検出回路5まで延びており、検出回路5に接続される出力端を有する。
この感圧センサ3では、第1配線部35Aが第1連結部33の第1端部37から延び、第2配線部45Aが第2連結部43の第2端部49から延びている。したがって、隣接する第1電極部31及び第2電極部41が感圧層17を介して接触した場合に、導通経路全体の抵抗が、第1電極部31と第2電極部41のいずれの組み合わせでも実質的に等しくなる。以下、さらに詳細に説明する。
図11及び図12を用いて、配線の第3例の構成を説明する。図11及び図12は、第3例の電極パターンを示す平面図である。
配線は、第1電極パターン21E(第1電極パターンの一例)と、第2電極パターン21F(第2電極パターンの一例)とを有する。
第1配線部35Bは、第1端部37から延びている。第1配線部35Bは、検出回路5まで延びており、検出回路5に接続される出力端を有する。
この感圧センサ3では、第1配線部35Bが第1連結部33の第1端部37から延び、第2配線部45Bが第2連結部43の第2端部49から延びている。したがって、隣接する第1電極部31及び第2電極部41が感圧層17を介して接触した場合に、導通経路全体の抵抗が、第1電極部31と第2電極部41のいずれの組み合わせでも実質的に等しくなる。
図13及び図14を用いて、配線の第4例の構成を説明する。図13及び図14は、第4例の電極パターンを示す平面図である。
配線51は、第1電極パターン21G(第1電極パターンの一例)と、第2電極パターン21H(第2電極パターンの一例)とを有する。なお、配線53は、第1電極パターン21G(第3電極パターンの一例)と、第2電極パターン21H(第4電極パターンの一例)とを有する。
第1配線部35Cは、第1端部37から延びている。第1配線部35Cは、検出回路5まで延びており、検出回路5に接続される出力端を有する。
この感圧センサ3では、第1配線部35Cが第1連結部33の第1端部37から延び、第2配線部45Cが第2連結部43の第2端部49から延びている。したがって、隣接する第1電極部31及び第2電極部41が感圧層17を介して接触した場合に、導通経路全体の抵抗が、第1電極部31と第2電極部41のいずれの組み合わせでも実質的に等しくなる。以下、さらに詳細に説明する。
なお、配線53は、配線51と構造が同じであるので、同様な機能が得られる。
なお、以上の構成により、前記実施形態とは異なり、4本の配線部(2本の第1配線部35Cと2本の第2配線部45C)が検出回路5まで延びる。
図15を用いて、配線の第5例の構成を説明する。図15は、第5例の電極パターンを示す平面図である。
この実施形態では、基本的構造は第4例と同じである。
異なる点は、配線51の第1電極パターン21G(第1電極パターンの一例)の第1配線部35C(第1配線部の一例)と、配線53の第1電極パターン21G(第3電極パターンの一例)の第1配線部35C(第3配線部の一例)を共通にしたことである。これにより、配線部の本数が4本から3本(1本の第1配線部35Dと2本の第2配線部45C)に減らすことができ、それにより配線部の材料及び占有面積を減らせる。特に、制御のために必要となるIC側の制御信号本数を減らすことができる。
図16を用いて、配線の第6例の構成を説明する。図16は、第6例の電極パターンを示す平面図である。
配線61は、第1電極パターン21I(第1電極パターンの一例)と、第2電極パターン21J(第2電極パターンの一例)とを有する。なお、配線63は、第1電極パターン21I(第3電極パターンの一例)と、第2電極パターン21J(第4電極パターンの一例)とを有する。
第1配線部35Dは、第1端部37から延びている。第1配線部35Dは、検出回路5まで延びており、検出回路5に接続される出力端を有する。
なお、第2配線部45Dは、検出回路5まで延びており、検出回路5に接続される出力端を有する。
なお、配線63、配線65、及び配線67は、配線61と構造が同じであるので、同様な機能が得られる。
また、この実施形態では、左右の額縁領域に設けられた配線部の数は3本ずつである。
図17を用いて、配線パターンの第7例の構成を説明する。図17は、第7例の電極パターンを示す平面図である。
配線71を説明する。配線71は、第1電極パターン21K(第1電極パターンの一例)と、第2電極パターン21L(第2電極パターンの一例)とを有する。なお、配線73は、第1電極パターン21K(第3電極パターンの一例)と、第2電極パターン21L(第4電極パターンの一例)とを有する。
第1配線部35Eは、第1端部37から延びている。第1配線部35Eは、検出回路5まで延びており、検出回路5に接続される出力端を有する。
なお、配線73、配線75、及び配線77は、配線71と構造が同じであるので、同様な機能が得られる。
また、この実施形態では、左右の額縁領域に設けられた配線部の数は4本ずつである。
図18を用いて、配線パターンの第8例の構成を説明する。図18は、第8例の電極パターンを示す平面図である。
配線81及び配線83を説明する。配線81は、第1電極パターン21M(第1電極パターンの一例)と、第2電極パターン21N(第2電極パターンの一例)とを有する。配線83は、第1電極パターン21M(第3電極パターンの一例)と、第2電極パターン21N(第4電極パターンの一例)とを有する。
第1電極パターン21Mは、複数の第1電極部31と、第1連結部33と、第1配線部35Fとを有する。複数の第1電極部31は、図の左右方向に延びる帯状又は短冊状であり、図の上下方向に互いに間隔を空けて配置されている。第1連結部33は、図の上下方向に延び複数の第1電極部31の図右側端同士を連結している。なお、第1連結部33の図下側端を第1端部37とし、図上側端を第2端部39とする。
第1配線部35Fは、第1端部37から延びている。具体的には、第1配線部35Fは、第2配線83の第1配線部35Fの図右側を通って延びている。第1配線部35Fは、検出回路5まで延びており、検出回路5に接続される出力端を有する。
これにより、第2配線部45Fは、第1配線部35Fに比べて長くなっている。なお、第2配線部45Fは、検出回路5まで延びており、検出回路5に接続される出力端を有する。
なお、第2配線部45Fは、配線81と配線85との間、さらに、配線83と配線87との間を延びており、各第2連結部43に対して隣接する位置に長く延びている。
なお、配線83、配線85、及び配線87は、配線81と構造が同じであるので、同様な機能が得られる。
また、この実施形態では、左右の額縁領域に設けられた配線部の数は2本ずつである。
図19を用いて、配線パターンの第9例の構成を説明する。図19は、第9例の電極パターンを示す平面図である。
配線91及び配線93を説明する。配線91は、第1電極パターン21O(第1電極パターンの一例)と、第2電極パターン21P(第2電極パターンの一例)とを有する。なお、配線93は、第1電極パターン21O(第3電極パターンの一例)と、第2電極パターン21P(第4電極パターンの一例)とを有する。
第1電極パターン21Oは、複数の第1電極部31と、第1連結部33と、第1配線部35Gとを有する。複数の第1電極部31は、図の上下方向に延びる帯状又は短冊状であり、図の左右方向に互いに間隔を空けて配置されている。第1連結部33は、図の左右方向に延び複数の第1電極部31の図下側端同士を連結している。なお、第1連結部33の図左側端を第1端部37とし、図右側端を第2端部39とする。
第1配線部35Gは、第1端部37から延びている。具体的には、第1配線部35Gは、第3配線93の図左側に沿って(つまり、近接して)配置されている。第1配線部35Gは、検出回路5まで延びており、検出回路5に接続される出力端を有する。
なお、配線93、配線95、及び配線97は、配線91と構造が同じであるので、同様な機能が得られる。
なお、配線93の第2配線部45Gは、距離を長くするために複数回折り返された形状になっている。
また、この実施形態では、左右の額縁領域に設けられた配線部の数は2本ずつである。
図20を用いて、配線パターンの第10例の構成を説明する。図20は、第10例の電極パターンを示す平面図である。
配線201及び配線203を説明する。配線201は、第1電極パターン21Q(第1電極パターンの一例)と、第2電極パターン21R(第2電極パターンの一例)とを有する。なお、配線203は、第1電極パターン21Q(第3電極パターンの一例)と、第2電極パターン21R(第4電極パターンの一例)とを有する。
第1電極パターン21Qは、複数の第1電極部31と、第1連結部33と、第1配線部35Hとを有する。複数の第1電極部31は、図の上下方向に延びる帯状又は短冊状であり、図の左右方向に互いに間隔を空けて配置されている。第1連結部33は、図の左右方向に延び複数の第1電極部31の図下側端同士を連結している。なお、第1連結部33の図左側端を第1端部37とし、図右側端を第2端部39とする。
第1配線部35Hは、第1端部37から延びている。第1配線部35Hは、検出回路5まで延びており、検出回路5に接続される出力端を有する。
これにより、第2配線部45Hは、第1配線部35Hに比べて長くなっている。なお、第2配線部45Hは、検出回路5まで延びており、検出回路5に接続される出力端を有する。
この実施形態では、第1配線201と第2配線203が線対称であり、第1連結部33同士が共通である。また、第3配線205と第4配線207が線対称であり、第1連結部33同士が共通である。
なお、配線203、配線205、及び配線207は、配線201と構造が同じであるので、同様な機能が得られる。
なお、配線203の第2配線部45Hは、距離を長くするために複数回折り返された形状になっている。
また、この実施形態では、左右の額縁領域に設けられた配線部の数は1本ずつである。
図21を用いて、上記の感圧センサが表示装置に用いられた例を説明する。図21は、感圧センサが適用された表示装置の模式的断面図である。
図21に示すように、表示装置101は、筐体103を有する。筐体103は図上側が開いた形状である。
表示装置101は、ガラス105を有する。ガラス105の下面は、筐体103の枠部の上に接着層107によって固定されている。ガラス105と筐体103との間には空間が確保されている。
表示装置101は、感圧センサ111を有する。感圧センサ111は、前述の感圧センサ3と同じである。
表示装置101は、クッション材113を有する。クッション材113は、感圧センサ111と筐体103の底面との間に設けられている。クッション材113は弾性変形可能な材料からなる。クッション材113は、感圧センサ111の上側のみに設けられていてもよいし、感圧センサ111の上下両側に設けられていてもよい。
以上、本発明の一実施形態について説明したが、本発明は上記実施形態に限定されるものではなく、発明の要旨を逸脱しない範囲で種々の変更が可能である。特に、本明細書に書かれた複数の実施形態及び変形例は必要に応じて任意に組み合せ可能である。
前記実施形態では電極パターンの線幅を均一なものであるとして表現したが、これが本発明を制限するものではないことは当然である。
前記実施形態では電極部の形状を直線であるとして表現したが、これが本発明を限定するものではないことは当然である。
3 :感圧センサ
5 :検出回路
7 :制御部
9 :上側層
11 :下側層
13 :中間接着層
15 :上部フィルム
17 :感圧層
19 :下部フィルム
21 :配線
21A :第1電極パターン
21B :第2電極パターン
31 :第1電極部
33 :第1連結部
35 :第1配線部
37 :第1端部
39 :第2端部
41 :第2電極部
43 :第2連結部
45 :第2配線部
47 :第1端部
49 :第2端部
Claims (7)
- 第1絶縁基材と、
前記第1絶縁基材との間に空間を介して配置された第2絶縁基材と、
前記第1絶縁基材の前記第2絶縁基材側の面全体に形成された感圧導電体と、
前記第2絶縁基材の前記第1絶縁基材側の面に形成され、複数の第1電極と、前記複数の第1電極の一端同士を連結するように延び第1端部を有する第1連結部と、前記第1連結部の前記第1端部から延びる第1配線部と、を有する第1電極パターンと、
前記第2絶縁基材の前記第1絶縁基材側の面に形成され、前記第1電極と交互に配置された複数の第2電極と、前記複数の第2電極の一端同士を連結するように延び前記第1端部に対して対角にある第2端部を有する第2連結部と、前記第2連結部の前記第2端部から延びる第2配線部とを有する第2電極パターンと、を備え、
前記第2配線部は、隣接する第1電極及び第2電極が前記感圧導電体を介して導通した場合に前記第1配線部の出力端と前記第2配線部の出力端との間の導通経路の抵抗が前記第1電極と前記第2電極のいずれの組み合わせでも実質的に等しくなるように延びる、
を備えた感圧センサ。 - 前記第1配線部の出力端と前記第2配線部の出力端との間の導通経路の抵抗のばらつきは、最大荷重を加えた場合の感圧抵抗の10%以下である、請求項1に記載の感圧センサ。
- 前記第2配線部は前記第2連結部の近傍を通って延びる、請求項1又は2に記載の感圧センサ。
- 前記第2配線部は前記第1連結部の近傍を通って延びる、請求項1又は2に記載の感圧センサ。
- 第1絶縁基材と、
前記第1絶縁基材との間に空間を介して配置された第2絶縁基材と、
前記第1絶縁基材の前記第2絶縁基材側の面全体に形成された感圧導電体と、
前記第2絶縁基材の前記第1絶縁基材側の面に形成され、複数の第1電極と、前記複数の第1電極の一端同士を連結するように延び第1端部を有する第1連結部と、前記第1連結部の前記第1端部から延びる第1配線部とを有する第1電極パターンと、
前記第2絶縁基材の前記第1絶縁基材側の面に形成され、前記第1電極と交互に配置された複数の第2電極と、前記複数の第2電極の一端同士を連結するように延び前記第1端部に対して対角にある第2端部を有する第2連結部と、前記第2連結部の前記第2端部から延びる第2配線部とを有する第2電極パターンと、を備え、
前記第2配線部は、隣接する第1電極及び第2電極が前記感圧導電体を介して導通した場合に前記第1配線部の出力端と前記第2配線部の出力端との間の導通経路の抵抗が前記第1電極と前記第2電極のいずれの組み合わせでも実質的に等しくなるように延び、
前記第2絶縁基材の前記第1絶縁基材側の面に形成され、複数の第3電極と、前記複数の第3電極の一端同士を連結するように延びる第3連結部と、前記第3連結部の第3端部から延びる第3配線部とを有する第3電極パターンと、
前記第2絶縁基材の前記第1絶縁基材側の面に形成され、前記第3電極と交互に配置された複数の第4電極と、前記複数の第4電極の一端同士を連結するように延び前記第3端部に対して対角にある第4端部を有する第4連結部と、前記第4連結部の前記第4端部から延びる第4配線部とを有する第4電極パターンと、を備え、
前記第4配線部は、隣接する第3電極及び第4電極が前記感圧導電体を介して導通した場合に前記第3配線部の出力端と前記第4配線部の出力端との間の導通経路の抵抗が前記第3電極と前記第4電極のいずれの組み合わせでも実質的に等しくなるように延びる、
感圧センサ。 - 前記第1配線部の出力端と前記第2配線部の出力端との間の導通経路の抵抗のばらつきは、最大荷重を加えた場合の感圧抵抗の10%以下であり、前記第3端部の出力端と前記第4端部の出力端との間の導通経路の抵抗のばらつきは、最大荷重を加えた場合の感圧抵抗の10%以下である、請求項5に記載の感圧センサ。
- 前記第1配線部と前記第3配線部が共通である、又は、前記第2配線部と前記第4配線部が共通である、請求項5又は6に記載の感圧センサ。
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Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109690273B (zh) * | 2016-09-13 | 2021-06-04 | 索尼公司 | 传感器、带、电子设备和手表型电子设备 |
CN106648491A (zh) * | 2016-10-12 | 2017-05-10 | 深圳市优景观复光电有限公司 | 互动式led显示装置及显示方法 |
KR102204967B1 (ko) * | 2019-03-08 | 2021-01-19 | 한국전자기술연구원 | 유연 압력 센서 및 그 센서의 제조 방법 |
WO2021097695A1 (zh) * | 2019-11-19 | 2021-05-27 | 金俊磊 | 一种水油交界高分离率环保装置 |
CN111190504A (zh) * | 2019-12-31 | 2020-05-22 | 厦门天马微电子有限公司 | 一种显示装置 |
CN110806223B (zh) * | 2020-01-08 | 2020-04-14 | 腾讯科技(深圳)有限公司 | 柔性传感系统、接近传感方法、装置、智能机器人及设备 |
US20220020253A1 (en) * | 2020-07-15 | 2022-01-20 | Palo Alto Research Center Incorporated | Systems and methods for improved object placement sensing for point-of-purchase sales |
JP2022109012A (ja) * | 2021-01-14 | 2022-07-27 | 株式会社ジャパンディスプレイ | 圧力センサ |
CN113270555B (zh) * | 2021-05-06 | 2022-06-21 | 西安交通大学 | 具有独立电极结构的电致发光器件及制备方法和应用 |
WO2022266972A1 (zh) * | 2021-06-24 | 2022-12-29 | 鹏鼎控股(深圳)股份有限公司 | 压力传感器、压感电路板及压感电路板的制造方法 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55131707U (ja) * | 1979-03-12 | 1980-09-18 | ||
JPH1078357A (ja) * | 1996-09-04 | 1998-03-24 | Alps Electric Co Ltd | 感圧抵抗素子 |
US6360612B1 (en) * | 1999-01-29 | 2002-03-26 | Constantin M. Trantzas | Pressure sensor apparatus |
JP2012163348A (ja) * | 2011-02-03 | 2012-08-30 | Tokai Rubber Ind Ltd | 静電容量型面状センサ |
JP2012247372A (ja) | 2011-05-30 | 2012-12-13 | Nippon Mektron Ltd | 圧力センサ及びその製造方法並びに圧力検出モジュール |
US20140007706A1 (en) * | 2010-07-30 | 2014-01-09 | Delphi Technologies, Inc. | Pressure sensitive transducer assembly and control method for a system including such an assembly |
WO2015181368A1 (en) * | 2014-05-30 | 2015-12-03 | Stabilo International Gmbh | Electronic sensor of an electronic writing instrument |
Family Cites Families (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5010774A (en) * | 1987-11-05 | 1991-04-30 | The Yokohama Rubber Co., Ltd. | Distribution type tactile sensor |
US5296837A (en) * | 1992-07-10 | 1994-03-22 | Interlink Electronics, Inc. | Stannous oxide force transducer and composition |
US5302936A (en) * | 1992-09-02 | 1994-04-12 | Interlink Electronics, Inc. | Conductive particulate force transducer |
US6909354B2 (en) * | 2001-02-08 | 2005-06-21 | Interlink Electronics, Inc. | Electronic pressure sensitive transducer apparatus and method for manufacturing same |
US7112755B2 (en) * | 2003-05-21 | 2006-09-26 | Nitta Corporation | Pressure-sensitive sensor |
EP1492136A1 (de) * | 2003-06-23 | 2004-12-29 | IEE International Electronics & Engineering S.A.R.L. | Drucksensor in Folienbauweise |
GB0319714D0 (en) * | 2003-08-21 | 2003-09-24 | Philipp Harald | Anisotropic touch screen element |
WO2007047762A2 (en) * | 2005-10-14 | 2007-04-26 | P-Inc. Holdings, Llc | Pressure responsive sensor |
US8134473B2 (en) * | 2008-04-10 | 2012-03-13 | Chg Hospital Beds Inc. | Signaling device for detecting the presence of an object |
WO2010035615A1 (ja) * | 2008-09-29 | 2010-04-01 | 日本写真印刷株式会社 | 感圧センサ |
KR101625611B1 (ko) * | 2009-09-03 | 2016-06-14 | 삼성디스플레이 주식회사 | 터치 패널 및 이를 갖는 터치 입출력 장치 |
JP5575596B2 (ja) * | 2010-09-22 | 2014-08-20 | 日本写真印刷株式会社 | 等電位線歪補正部を備えたマルチタッチパネル |
TWI520857B (zh) * | 2011-09-02 | 2016-02-11 | Lg化學股份有限公司 | 模板及其製造方法 |
US8893565B2 (en) * | 2012-07-13 | 2014-11-25 | Nokia Corporation | Apparatus for sensing |
GB2510600B (en) * | 2013-02-08 | 2015-05-20 | R & D Core Ltd | Calibration of Contact Sensor |
US10007380B2 (en) * | 2013-07-29 | 2018-06-26 | Hideep Inc. | Touch input device with edge support member |
KR101681305B1 (ko) * | 2014-08-01 | 2016-12-02 | 주식회사 하이딥 | 터치 입력 장치 |
CA2925692C (en) * | 2013-09-27 | 2021-09-21 | Sensel, Inc. | Touch sensor detector system and method |
KR101712346B1 (ko) * | 2014-09-19 | 2017-03-22 | 주식회사 하이딥 | 터치 입력 장치 |
JP2016024109A (ja) * | 2014-07-23 | 2016-02-08 | パナソニックIpマネジメント株式会社 | 感圧センサ |
JP6527343B2 (ja) * | 2014-08-01 | 2019-06-05 | 株式会社 ハイディープHiDeep Inc. | タッチ入力装置 |
JP5845371B1 (ja) * | 2014-09-19 | 2016-01-20 | 株式会社 ハイディープ | スマートフォン |
WO2016163111A1 (ja) * | 2015-04-06 | 2016-10-13 | 株式会社デンソー | 力検知装置 |
KR101652029B1 (ko) * | 2015-04-13 | 2016-08-30 | 주식회사 하이딥 | 압력 검출 모듈 및 이를 포함하는 스마트폰 |
KR101583221B1 (ko) * | 2015-06-17 | 2016-01-07 | 주식회사 하이딥 | 압력 검출을 위한 전극시트 및 이를 포함하는 압력 검출 모듈 |
KR20170025706A (ko) * | 2015-08-31 | 2017-03-08 | 주식회사 하이딥 | 압력 감도 조절이 가능한 압력 검출기 및 이를 포함하는 터치 입력 장치 |
JP6486308B2 (ja) * | 2015-12-28 | 2019-03-20 | 富士フイルム株式会社 | ハードコートフィルムおよびその応用 |
CN105807988A (zh) * | 2016-02-25 | 2016-07-27 | 京东方科技集团股份有限公司 | 触控显示基板、触控显示屏及触控显示基板的制作方法 |
US10006820B2 (en) * | 2016-03-08 | 2018-06-26 | Apple Inc. | Magnetic interference avoidance in resistive sensors |
US10054503B2 (en) * | 2016-03-11 | 2018-08-21 | Microsoft Technology Licensing, Llc | Force sensor |
JP6700896B2 (ja) * | 2016-03-25 | 2020-05-27 | 株式会社ジャパンディスプレイ | 検出装置及びタッチ検出機能付き表示装置 |
JP6681765B2 (ja) * | 2016-03-29 | 2020-04-15 | 株式会社ジャパンディスプレイ | 検出装置 |
US10209830B2 (en) * | 2016-03-31 | 2019-02-19 | Apple Inc. | Electronic device having direction-dependent strain elements |
US9965092B2 (en) * | 2016-05-18 | 2018-05-08 | Apple Inc. | Managing power consumption of force sensors |
US9851267B1 (en) * | 2016-06-01 | 2017-12-26 | Microsoft Technology Licensing, Llc | Force-sensing element |
US10133418B2 (en) * | 2016-09-07 | 2018-11-20 | Apple Inc. | Force sensing in an electronic device using a single layer of strain-sensitive structures |
KR102050183B1 (ko) * | 2016-11-23 | 2019-11-28 | 선전 구딕스 테크놀로지 컴퍼니, 리미티드 | 힘 측정 방법, 장치 및 기기 |
CN107340912B (zh) * | 2017-06-30 | 2020-08-14 | 上海天马微电子有限公司 | 触控面板、触控显示装置、触控压力检测方法 |
-
2016
- 2016-03-22 JP JP2016056859A patent/JP6297613B2/ja active Active
-
2017
- 2017-01-27 KR KR1020187026748A patent/KR102534083B1/ko active IP Right Grant
- 2017-01-27 EP EP17769651.5A patent/EP3421957B1/en active Active
- 2017-01-27 CN CN201780018953.2A patent/CN108885147B/zh active Active
- 2017-01-27 WO PCT/JP2017/002944 patent/WO2017163604A1/ja active Application Filing
- 2017-03-20 TW TW106109059A patent/TWI705237B/zh active
-
2018
- 2018-09-22 US US16/138,981 patent/US10928259B2/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55131707U (ja) * | 1979-03-12 | 1980-09-18 | ||
JPH1078357A (ja) * | 1996-09-04 | 1998-03-24 | Alps Electric Co Ltd | 感圧抵抗素子 |
US6360612B1 (en) * | 1999-01-29 | 2002-03-26 | Constantin M. Trantzas | Pressure sensor apparatus |
US20140007706A1 (en) * | 2010-07-30 | 2014-01-09 | Delphi Technologies, Inc. | Pressure sensitive transducer assembly and control method for a system including such an assembly |
JP2012163348A (ja) * | 2011-02-03 | 2012-08-30 | Tokai Rubber Ind Ltd | 静電容量型面状センサ |
JP2012247372A (ja) | 2011-05-30 | 2012-12-13 | Nippon Mektron Ltd | 圧力センサ及びその製造方法並びに圧力検出モジュール |
WO2015181368A1 (en) * | 2014-05-30 | 2015-12-03 | Stabilo International Gmbh | Electronic sensor of an electronic writing instrument |
Non-Patent Citations (1)
Title |
---|
See also references of EP3421957A4 |
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US20190025139A1 (en) | 2019-01-24 |
JP2017173028A (ja) | 2017-09-28 |
EP3421957A1 (en) | 2019-01-02 |
JP6297613B2 (ja) | 2018-03-20 |
EP3421957B1 (en) | 2024-04-10 |
TWI705237B (zh) | 2020-09-21 |
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