WO2018110060A1 - Touch sensor - Google Patents

Touch sensor Download PDF

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Publication number
WO2018110060A1
WO2018110060A1 PCT/JP2017/036940 JP2017036940W WO2018110060A1 WO 2018110060 A1 WO2018110060 A1 WO 2018110060A1 JP 2017036940 W JP2017036940 W JP 2017036940W WO 2018110060 A1 WO2018110060 A1 WO 2018110060A1
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WO
WIPO (PCT)
Prior art keywords
touch sensor
outer end
base
decorative portion
coat layer
Prior art date
Application number
PCT/JP2017/036940
Other languages
French (fr)
Japanese (ja)
Inventor
佐藤　茂樹
亮 友井田
慎司 鳥山
澤田　昌樹
Original Assignee
パナソニックＩｐマネジメント株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Priority to JP2018556214A priority Critical patent/JPWO2018110060A1/en
Publication of WO2018110060A1 publication Critical patent/WO2018110060A1/en

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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

Definitions

  • the present invention relates to a touch sensor used for various electronic devices.
  • the capacitive touch sensor is mounted in front of the display unit of the electronic device.
  • the touch sensor includes a substrate, a plurality of electrodes, and wiring connected to each of the electrodes.
  • the electrode is disposed on the substrate.
  • the wiring is routed around the periphery of the substrate.
  • a frame-shaped decorative portion is arranged on the substrate so as to hide the wiring. The user visually recognizes the display content of the display unit through the touch sensor and performs an input operation to the touch sensor (see, for example, Patent Document 1).
  • the touch sensor is disposed on a translucent substrate, wiring disposed on a peripheral portion of the substrate in a top view, a first decorative portion disposed on the upper surface of the substrate, and a lower surface of the substrate.
  • a second decorating part is disposed so as to cover the wiring in a top view, and has an outer end positioned away from an outer edge end of the base and an inner portion closer to the central portion of the base than the outer end. With ends.
  • the second decorating part is closer to the central part of the base than the outer end of the first decorating part or at the same position as the outer end of the first decorating part in a top view. And an outer end located on the outer side of the base with respect to the outer end of the first decorative portion.
  • This touch sensor can suppress light leakage from the outer edge.
  • FIG. 1 is a top perspective view of the touch sensor according to the first embodiment.
  • FIG. 2 is a bottom perspective view of the touch sensor according to the first embodiment.
  • 3A is a cross-sectional view of the touch sensor shown in FIGS. 1 and 2 along line III-III.
  • 3B is a cross-sectional view of another touch sensor according to Embodiment 1.
  • FIG. FIG. 4 is a partial cross-sectional view showing the method of manufacturing the touch sensor according to the first embodiment.
  • FIG. 5 is a partial cross-sectional view showing the method of manufacturing the touch sensor according to the first embodiment.
  • FIG. 6 is a partial cross-sectional view illustrating the method of manufacturing the touch sensor according to the first embodiment.
  • FIG. 7 is a partial cross-sectional view of still another touch sensor according to the first embodiment.
  • FIG. 8 is a partial cross-sectional view showing a manufacturing method of the touch sensor shown in FIG.
  • FIG. 9A is a partial cross-sectional view of still another touch sensor according to Embodiment 1.
  • FIG. 9B is a partial cross-sectional view of still another touch sensor according to Embodiment 1.
  • FIG. 10 is a partial cross-sectional view of still another touch sensor according to the first embodiment.
  • FIG. 12B is a partial cross-sectional view of still another touch sensor according to Embodiment 1.
  • FIG. 13 is a partial cross-sectional view of the touch sensor according to the second embodiment.
  • FIG. 1 is a top perspective view of a touch sensor 1 according to the first embodiment.
  • FIG. 2 is a bottom perspective view of the touch sensor 1.
  • 3A is a cross-sectional view of the touch sensor shown in FIGS. 1 and 2 along line III-III.
  • the capacitive touch sensor 1 includes a flat substrate 10, a decorating unit 30, a decorating unit 40, a sensor electrode 70, and a wiring 80 connected to the electrode 70.
  • the substrate 10 is transparent and has translucency to transmit visible light.
  • the base 10 has an upper surface 11, a lower surface 12 opposite to the upper surface 11, an inclined surface 13, and an outer edge end 14.
  • the inclined surface 13 is located on the outer edge where the decorative portion 30 is not arranged.
  • the upper surface 11 is a flat surface.
  • the upper surface 11 and the inclined surface 13 are connected at the boundary 16.
  • the inclined surface 13 is inclined so as to fall downward from the boundary portion 16 with a certain gradient.
  • the inclined surface 13 is provided over the entire circumference of the upper surface 11, and thus the boundary portion 16 has a frame shape surrounding the upper surface 11 in a top view.
  • the inclined surface 13 is connected to the outer edge 14 of the base 10.
  • the outer edge 14 has a predetermined height and is connected to the lower surface 12.
  • the base 10 is made of a resin such as a PC resin or an acrylic resin.
  • the substrate 10 may be formed of another transparent and translucent insulating material such as glass.
  • the plurality of electrodes 70 and the plurality of wirings 80 are disposed on the lower surface 12 of the base body 10.
  • the plurality of electrodes 70 are arranged at the center of the lower surface 12.
  • the plurality of wirings 80 each have one end connected to the plurality of electrodes 70, and are routed around the periphery of the lower surface 12.
  • the other end of the wiring 80 functions as a terminal portion connected to a flexible circuit (FPC) substrate 90. That is, the base 10 has an FPC mounting portion provided on the lower surface 12 including the terminal portion of the wiring 80.
  • the FPC board 90 is mounted on the FPC mounting portion of the lower surface 12 with a conductive adhesive.
  • the detailed configuration and material of the electrode 70 are not limited.
  • the electrode 70 may be formed of, for example, ITO formed in a solid shape on a belt-like outer shape, a resin composition having translucency and conductivity, or, for example, conductive thin wires connected to each other in a mesh shape. It may be constituted by a conductive part.
  • the conductive thin wire is made of a conductive metal such as copper.
  • the width dimension and thickness dimension of the conductive thin wire are about several ⁇ m.
  • the conductive portion is disposed so as to overlap the flat lower surface 12.
  • the wiring 80 may have the same configuration as the electrode 70 and be formed of the same material. Or the wiring 80 may be formed with the resin composition etc. which hardened
  • FIG. 3B is a cross-sectional view of another touch sensor 1D according to the first exemplary embodiment.
  • a groove 12P is provided on the lower surface 12 of the substrate 10 shown in FIG. 3B by injection molding, laser processing, or the like.
  • An electrode 70 and a wiring 80 are disposed inside the groove 12P.
  • the electrode 70 and the wiring 80 are composed of the conductive thin wires described above.
  • the electrode 70 and the wiring 80 may be provided on the upper surface 11.
  • the FPC board 90 is mounted on the upper surface 11.
  • the decorative portion 30 is provided on the upper surface 11 of the base 10 and has a frame shape so as to hide the wiring 80. That is, the decoration part 30 has covered the upper position of the installation location of the wiring 80 by the top view.
  • the decorative portion 30 includes a portion 31 having a substantially constant thickness and an outer end portion 32 extending outward from the portion 31.
  • the cross section of the outer end portion 32 has a triangular shape, and the outer end portion 32 includes the outer end 33 of the decorative portion 30.
  • the outer end 33 is disposed corresponding to the boundary 16 of the base body 10.
  • the portion 31 of the decorating part 30 has a lower surface 35A that overlaps the upper surface 11 and an upper surface 35 opposite to the lower surface 35A.
  • the upper surface 35 is connected to the outer end surface 34 at a boundary point 37.
  • the outer end surface 34 is a surface connected to the lower surface 35 ⁇ / b> A of the outer end portion 32, and is located between the boundary point 37 and the outer end 33.
  • the outer end surface 34 is inclined downwardly from the boundary point 37 toward the upper surface 11 with a certain gradient. In other words, the outer end portion 32 becomes thicker as it approaches the inner portion 31 from the outer end 33 in a cross-sectional view.
  • the boundary 37, the outer end surface 34, the boundary 16 and the inclined surface 13 are substantially flush.
  • the decorating part 30 may be formed of a plurality of layers stacked on each other.
  • the decoration portion 30 extends inward from the outer end 33 and has a width that hides the wiring 80 on the back surface.
  • the color of the decorating unit 30 is, for example, a black or dark color with low light transmissivity, and is made of a material such as a resin. It is desirable that the color of the decorating unit 30 is a color that makes it difficult for the wiring 80 to be visually recognized in a top view.
  • the decoration part 30 is arrange
  • the decoration portion 40 is disposed so as to overlap the lower surface 12 inward from the outer edge 14 of the base 10. That is, the outer end 42 on the outer side of the decorating part 40 is located on the outer side of the base body 10 than the outer end 33 of the decorating part 30.
  • the decoration part 40 has, for example, a frame shape in a top view.
  • the inner end 41 of the decoration part 40 is located inside the outer end 33 of the decoration part 30 in a top view.
  • the inner end 41 may be located at the same position as the outer end 33 in a top view.
  • the decoration unit 40 is not disposed at a place where the wiring 80 is routed. In other words, it is desirable that the inner end 41 is disposed outside the wiring 80 when viewed from above. With this configuration, a step due to the wiring 80 does not occur, so that the decorative portion 40 can be thinned. Since the decorating part 40 is arranged so as to overlap the flat lower surface 12, it can be easily formed by printing or the like.
  • the decoration part 40 may also be formed of a plurality of layers that are stacked.
  • the color of the decoration unit 40 is, for example, a black or dark color having a low light transmission like the decoration unit 30. And the increase in material can be suppressed by forming the decoration part 40 with the same material as the decoration part 30, and the difference of both color tone can be made small.
  • the upper surface 35 of the decoration part 30 is covered with a coat layer 50 that is transparent and has translucency.
  • the coat layer 50 is a hard coat layer, for example.
  • the coat layer 50 is formed from a single layer, it is preferably formed of a layer having both a hard coat function and an optical adjustment function.
  • the coat layer 50 may be formed of a plurality of stacked layers.
  • the touch sensor 1 may not include the coat layer 50.
  • the portion of the coat layer 50 that overlaps the decorative portion 30 includes a portion 51 having a substantially constant thickness and an outer end portion 52 that extends outward from the portion 51.
  • the outer end 52 has a triangular cross section, and the outer end 52 includes an outer end 53 of the coat layer 50.
  • the outer end 53 is arranged corresponding to the boundary point 37.
  • the portion 51 of the coat layer 50 has an upper surface 55 and a lower surface 55A.
  • the upper surface 55 is flat and is connected to the outer end surface 54 at a boundary 56.
  • the outer end surface 54 is located on the opposite side of the lower surface 55 ⁇ / b> A of the outer end portion 52 of the coat layer 50 and is a surface between the boundary 56 and the outer end 53.
  • the outer end surface 54 is inclined downwardly from the boundary point 56 toward the upper surface 35 of the decorating unit 30 with a certain gradient. In other words, the outer end portion 52 is also thicker as it approaches the inner portion 51 from the outer end 53. And the outer end surface 54, the boundary part 37, the outer end surface 34 of the decoration part 30, and the inclined surface 13 of the base
  • the coat layer 50 covers the inner area surrounded by the decorative portion 30 in addition to the decorative portion 30.
  • the coat layer 50 is disposed so as to overlap the upper surface 11 of the substrate 10, for example.
  • An internal range surrounded by the decorating unit 30 is a detection region R1 that is an operation surface on which a user performs a touch operation or the like. In the detection region R1, contact or proximity can be detected. It is desirable that the upper surface 55 of the coat layer 50 including the detection region R1 and the non-detection region R2 is substantially flat. Note that the touch sensor 1 may not include the coat layer 50. Further, the installation range of the coat layer 50 may be set as appropriate. As described above, the coat layer 50 may be formed by directly overlapping the upper surface 35 of the decorating unit 30 and the like, and a configuration having the coat layer 50 by bonding a resin film with the coat layer 50 attached thereto may be realized. .
  • the decoration part 40 is covered with the coat layer 60 which has translucency.
  • the coat layer 60 is, for example, a hard coat layer.
  • the coat layer 60 is formed of a single layer, it is preferably formed of a layer having both a hard coat function and an optical adjustment function.
  • the coat layer 60 may be formed of a plurality of stacked layers.
  • the coat layer 60 also covers the area inside the decorative portion 40 in addition to the decorative portion 40.
  • the coat layer 60 is disposed, for example, so as to overlap the lower surface 12 of the substrate 10, and the coat layer 60 covers and protects the electrode 70 and the wiring 80 disposed on the lower surface 12 of the substrate 10.
  • the groove 12P for accommodating the conductive portion such as the electrode 70 is formed on the lower surface 12 of the base body 10
  • the wiring 80 and the like are formed at the bottom of the groove 12P, and the base body 10 of the groove 12P is formed.
  • the opening does not reach the lower surface 12.
  • the groove 12 ⁇ / b> P is filled with the coat layer 60.
  • the touch sensor 1 may not include the coat layer 60. You may set suitably also in the installation range of the coat layer 60.
  • FIG. The coating layer 60 may realize a configuration having the coating layer 60 by bonding a resin film with the coating layer 60 attached thereto.
  • the touch sensor 1 is mounted on an electronic device so that the touch sensor 1 is not attached to the cover lens and the touch panel 60 faces the display surface of the display device, and the surface on the coat layer 50 side becomes an operation surface. Is done. That is, the touch sensor 1 is mounted on the electronic device in a state in which the inclined surface 13 faces in the direction in which the user views.
  • the inclined surface 13 is an outer edge where the decorative portion 30 is not disposed.
  • the decorative portion 40 extends inward from the outer edge 14 of the base 10 on the lower surface 12, so that leakage of light from the outer edge can be suppressed even when the touch sensor 1 is separated from the display device, for example.
  • a decorative portion is arranged with insulating ink on the surface of the substrate in the viewing direction.
  • a deviation may occur in the formation position of the decoration part.
  • bonding displacement may occur. That is, in any case, there is a possibility that an outer edge portion where the decoration portion is not arranged remains in the substrate, and light leakage may occur from the outer edge portion where the decoration portion is not arranged.
  • the touch sensor 1 suppresses light leakage from the outer edge. Light leakage from the outer edge of the touch sensor 1 is reduced as the overlapping portion of the decorative portion 40 and the decorative portion 30 in a top view is widened.
  • the width from the outer edge end to the inner end 41 of the decorative portion 40 is provided with about 2 mm. It may be provided with a width of about 5 mm or more so as not to cover the wiring 80.
  • the decorative portion 40 is provided on the lower surface 12. That is, the touch sensor 1 is configured to block the light from the display surface by the decoration unit 40 at a position close to the display surface of the display device.
  • the decorative portion 40 is arranged from the vicinity of the outer edge end to the inner side, that is, outside the outer end 33 in a top view. Even if it is the decoration part 40 which has the outer end 42 on the inner side from the outer edge end on the side and is provided from the outer end 42 to the inner side, light leakage from the outer edge portion may be suppressed. As described above, the installation range of the decoration unit 40 in the touch sensor 1 may be set so as to suppress light leakage from the outer edge portion in consideration of the mounting state on the electronic device and the like.
  • the base 10 has the upper surface 11, the lower surface 12, and the outer edge 14 surrounding the upper surface 11 and the lower surface 12, and has translucency.
  • the base 10 has a detection region R1 that can detect contact or proximity, and a non-detection region R2 that surrounds the detection region R1 and includes the outer edge 14.
  • the detection region R1 is located in the central portion C10 of the base body 10
  • the non-detection region R2 is located in the peripheral portion P10 surrounding the central portion C10 around the central portion C10 of the base body 10.
  • the electrode 70 is located in the detection region R1 when viewed from above.
  • the wiring 80 is connected to the electrode 70 and is disposed in the non-detection region R2 of the base 10 in a top view.
  • the decorating unit 30 is disposed on the upper surface 11 of the base 10 and covers the wiring 80 when viewed from above.
  • the decorating unit 30 has an outer end 33 that is located away from the outer edge 14 of the base 10 and an inner end 30T that is closer to the detection region R1 than the outer end 33.
  • the decoration unit 40 is disposed on the lower surface 12 of the base body 10 and is closer to the detection region R1 than the outer end 33 of the decoration unit 30 or located at the same position as the outer end 33 of the decoration unit 30 in a top view. It has an end 41 and an outer end 42 located on the outer side of the base body 10 than the outer end 33 of the decorative portion 30.
  • the touch sensor 1 can be mounted with a small step with respect to the housing of the electronic device because the inclined surface 13 is located at the outer edge of the operation surface. Moreover, since the decoration part 30 is not arrange
  • 4 to 6 are partial cross-sectional views showing a method for manufacturing the touch sensor 1.
  • a base member 100 having a flat plate shape is prepared.
  • the base member 100 has an upper surface 11A, a lower surface 12A, and an outer edge end 14A that is connected to the upper surface 11A and the lower surface 12A and surrounds the upper surface 11A and the lower surface 12A.
  • the decoration part 30A which has a fixed thickness and has a frame shape is formed in the upper surface 11A of the member 100 for base
  • a coat layer 50A is formed on the decorative portion 30A.
  • the portion of the coat layer 50A that overlaps the decorative portion 30A has a certain thickness.
  • the outer end of the coat layer 50 ⁇ / b> A corresponding to the outer side of the base body 10 is aligned with the outer end of the decorative portion 30 ⁇ / b> A, but the positional relationship between these outer ends is not particularly limited and may be shifted. Good.
  • the order of forming the electrode 70 and the wiring 80 is not particularly limited.
  • the formation order of the decoration part 40 and the coat layer 60 is not limited, the decoration part 40 and the coat layer 60 are shown in FIGS. 5 and 6.
  • the corner of the upper surface 11 ⁇ / b> A is chamfered with a cut surface C ⁇ b> 1 that is a C surface over the coat layer 50 ⁇ / b> A, the decorative portion 30 ⁇ / b> A, and the base member 100.
  • the coat layer 50 including the outer end surface 54 and the like, the decorative portion 30 including the outer end surface 34 and the base 10 including the inclined surface 13 and the like are simultaneously formed.
  • the outer end surface 34, the boundary 16 and the inclined surface 13 can be easily made uniform by this manufacturing process.
  • the chamfered shape of the touch sensor 1, that is, the shape of the cut surface C1 may be other than the C surface which is a plane.
  • the corner on the operation surface side may be chamfered with an R shape that is a partial cylindrical surface having a predetermined radius.
  • FIG. 7 is a partial cross-sectional view of still another touch sensor 1A according to the first embodiment.
  • FIG. 8 is a partial cross-sectional view showing a manufacturing method of the touch sensor 1A. 7 and 8, the same reference numerals are given to the same parts as those of the touch sensor 1 shown in FIG. 3A.
  • the touch sensor 1A differs from the touch sensor 1 in the order of manufacturing processes.
  • the touch sensor 1A is provided with a coat layer 50B having a shape different from that of the coat layer 50, instead of the coat layer 50 of the touch sensor 1 shown in FIG. 3A.
  • the base member 100 is prepared, and the decorative portion 30A is formed in a frame shape on the upper surface 11A.
  • angular part by the side of the upper surface 11A is chamfered by the cut surface C1, and it forms in the base
  • the coating layer 50B is formed in the inner side range from the boundary location 37 so that it may overlap with the decorating part 30, and the touch sensor 1A is obtained.
  • the chamfered shape that is, the shape of the cut surface C1 may be other than the C surface.
  • the coat layer 50 ⁇ / b> B may partially or entirely cover the outer end surface 34 of the decorating unit 30 beyond the boundary portion 37.
  • the coat layer 50 ⁇ / b> B may cover the inclined surface 13 partially or entirely beyond the boundary 16. Examples of these are described below.
  • FIG. 9A is a partial cross-sectional view of still another touch sensor 1B according to the first exemplary embodiment.
  • the same reference numerals are assigned to the same portions as those of the touch sensor 1A shown in FIGS.
  • the decoration part 30 and the coat layer 50B are formed in the same order as the touch sensor 1A.
  • the coat layer 50 ⁇ / b> B covers the outer end surface 34 of the decorative portion 30 partially or entirely beyond the boundary 37, and extends to the outer edge 14 of the base 10 in a top view.
  • the height from the lower surface 12 of the substrate 10 to the upper surface of the coat layer 50B is constant from the detection region R1 to the outer edge 14 of the substrate 10, that is, the touch sensor 1B has the detection region R1 and the non-detection region. It has a certain thickness over R2.
  • FIG. 9B is a partial cross-sectional view of still another touch sensor 1C according to the first exemplary embodiment. 9B, the same reference numerals are given to the same portions as those of the touch sensor 1B shown in FIG. 9A.
  • the decorative portion 30 and the coat layer 50B are formed in the same order as the touch sensor 1A.
  • the coat layer 50 ⁇ / b> B partially or entirely covers the outer end surface 34 of the decorative portion 30 beyond the boundary 37, and substantially covers the inclined surface 13 up to the outer edge 14 of the base 10 in a top view. It extends along the inclined surface 13 in parallel.
  • FIG. 10 is a partial cross-sectional view of still another touch sensor 1E according to the first embodiment.
  • FIG. 11 is a partial cross-sectional view showing a manufacturing method of the touch sensor 1E. 10 and 11, the same reference numerals are assigned to the same parts as those of the touch sensor 1 shown in FIG. 3A.
  • the touch sensor 1E differs from the touch sensors 1 and 1A in the order of manufacturing processes.
  • a touch sensor 1E shown in FIG. 10 is different from the decorating part 30 and the coat layer 50 of the touch sensor 1 shown in FIG. 3A in that the decorating part 30B and the coat layer 50B have different shapes.
  • the base member 100 is prepared, and the base member 100 is formed on the base 10 by chamfering the corners of the upper surface 11A of the base 10A with the C surface as shown in FIG.
  • a decorative portion 30B having a frame shape and a substantially constant thickness is formed on the upper surface 11 of the base 10.
  • the position of the outer end 33 ⁇ / b> A of the decorative portion 30 ⁇ / b> B is aligned with the boundary 16. That is, the decorative portion 30B has a substantially constant thickness from the outer end 33A to the inner side.
  • coat layer 50B is formed so that it may overlap with decoration part 30B, and touch sensor 1E is obtained.
  • a coat layer 50B may be provided so as to cover the outer end 33A of the decorative portion 30B.
  • the chamfered shape may be other than the C surface as in the case of the touch sensors 1 and 1A.
  • the decorative portion 30B may partially cover the inclined surface 13 beyond the boundary 16.
  • the coat layer 50 ⁇ / b> B may cover the decorative portion 30 ⁇ / b> B disposed beyond the boundary 16.
  • the coat layer 50B may extend to the same position as the decorative portion 30B, or may cover the inclined surface 13 partially or entirely. Examples of these are described below.
  • FIG. 12A is a partial cross-sectional view of still another touch sensor 1F according to the first exemplary embodiment.
  • the same reference numerals are given to the same portions as those of the touch sensor 1E shown in FIG.
  • the decorative portion 30B and the coat layer 50B are formed in the same order as the touch sensor 1E.
  • the coat layer 50B covers the decorative portion 30B, is disposed beyond the outer end 33A of the decorative portion 30B, and extends to the outer edge 14 of the base 10 in a top view.
  • the height from the lower surface 12 of the substrate 10 to the upper surface of the coat layer 50B is constant from the detection region R1 to the outer edge 14 of the substrate 10, that is, the touch sensor 1F has the detection region R1 and the non-detection region. It has a certain thickness over R2.
  • FIG. 12B is a partial cross-sectional view of still another touch sensor 1G according to the first exemplary embodiment.
  • the same reference numerals are given to the same portions as those of the touch sensor 1F shown in FIG. 12A.
  • the decorative portion 30B and the coat layer 50B are formed in the same order as the touch sensor 1E.
  • the decorative portion 30B is disposed beyond the boundary 16. That is, the outer end 33 ⁇ / b> B of the decorative portion 30 ⁇ / b> B is located between the boundary 16 and the outer edge 14 on the inclined surface 13.
  • the coat layer 50B covers the decorative portion 30B and is disposed beyond the outer end 33B of the decorative portion 30B, and is substantially parallel to the inclined surface 13 up to the outer edge 14 of the base body 10 when viewed from above. Extending along.
  • the coat layer 50B covers the outer ends 33A and 33B of the decorative portion 30B, so that peeling from the outer ends 33A and 33B can be suppressed.
  • the coat layer 50B partially covers the outer ends 33A and 33B of the decorative portion 30B, formation unevenness may occur. Even in that case, since the coat layer 50B is transparent, formation unevenness is difficult to visually recognize.
  • the inclined surfaces 13 of the above touch sensors 1, 1A to 1G may be formed by processing other than chamfering.
  • FIG. 13 is a partial cross-sectional view of the touch sensor 1H according to the embodiment.
  • the inclined surface 13 of the base body 10 is included in the upper outer edge portion that is the surface side in the viewing direction.
  • the 13 includes a base body 10A having a shape different from that of the base body 10 instead of the base body 10 of the touch sensor 1.
  • the base 10A is used as it is without chamfering the base member 100 described above.
  • the base 10A has an outer edge 14A.
  • the decoration portion 30C is disposed so as to overlap the upper surface 11A of the base body 10A, and the coat layer 50C is disposed so as to cover the decoration portion 30C.
  • the coat layer 50C extends to the outer edge 14A of the base 10A.
  • the outer end 33B of the decorative portion 30C is located farther from the outer edge end 14A of the base body 10A than the outer edge end 14A.
  • the decorative portion 30C has a substantially constant thickness from the outer end 33B to the inner side.
  • the outer end 33 ⁇ / b> B is arranged at the same position with respect to the inner end 41 of the decorative portion 40 in a top view or a position closer to the outer edge 14 ⁇ / b> A on the outer side than
  • the outer edge portion where the decorative portion 30C is not arranged is the outer edge portion of the upper surface 11A itself, and has a configuration other than the chamfered inclined surface 13 shown in FIG. 3A.
  • the decoration part 40 is provided in the range of the lower surface 12A opposite to the outer edge part. Even in this configuration, it is possible to suppress light leakage from the outer edge where the decorative portion 30C is not disposed.
  • the decoration part 40 has the outer end 42 located outside the outer end 33B at the same position as the outer edge end 14A of the base body 10A or on the inner side of the outer edge end 14A in the top view, and from the outer end 42 to the inner side. It extends to.
  • the coat layer 50C has a peripheral portion 50D from the outer end 33B of the decorative portion 30C to the outer edge 14A of the base 10A.
  • the peripheral edge portion 50D is disposed so as to overlap the upper surface 11A.
  • the decorative portion 30C is protected by the coat layer 50C including the outer end 33B.
  • the coat layer 50C may extend to the outer end 33B of the decorative portion 30C.
  • the decorating units 30 to 30C and the decorating unit 40 are directly provided on the bases 10 and 10A.
  • the decoration parts 30, 30A to 30C and the decoration part 40 are mounted on the base 10, 10A with another member such as a film having a decoration part corresponding to the decoration parts 30, 30A to 30C and the decoration part 40. It may be provided.
  • the mounting method is not particularly limited, such as adhesion, bonding, and welding.
  • the outer shape of the base 10 or 10A is not limited to a flat plate shape, and may be a curved plate shape. Further, the bases 10 and 10A may be rigid plate-like members, or may be constituted by a flexible film or the like.
  • a mark such as a character or a figure can be formed by forming a through-hole at a position overlapping the decorative portion 40 in a top view.
  • a mark such as a character or a figure can be formed by forming a through-hole at a position overlapping the decorative portion 40 in a top view.
  • the decoration part 40 is arrange
  • the intermediate decorating unit has a color different from that of the decorating units 30, 30 ⁇ / b> A to 30 ⁇ / b> C, and the decorating unit 40.
  • the decoration unit 40 can suppress the incidence of light to the display device, that is, the intermediate decoration unit from below. Therefore, the mark can be visually recognized from above the decorating portions 30 to 30C with a small difference in color tone from the preset color.
  • terms indicating directions such as “upper surface”, “lower surface”, and “top view” indicate relative directions determined only by the relative positional relationship of the components of the touch sensor such as the base and wiring, and the vertical direction, etc. It does not indicate the absolute direction.
  • the touch sensor according to the present invention can suppress light leakage from an outer edge portion where no decorative portion is arranged, and is useful for various electronic devices.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
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Abstract

This touch sensor is provided with: a translucent base body; a wiring line that is arranged at the peripheral edge of the base body in a top view; a first decorative part that is arranged on the top surface of the base body; and a second decorative part that is arranged on the bottom surface of the base body. The first decorative part is arranged so as to cover the wiring line in the top view, and has: an outer end that is positioned away from the outer edge end of the base body; and an inner end that is closer to the center of the base body than the outer end. The second decorative part has: an inner end that is set, in the top view, closer to the center of the base body than the outer end of the first decorative part, or at the same position as that of the outer end of the first decorative part; and an outer end that is positioned more outside the base body than the outer end of the first decorative part. This touch sensor can suppress light leakage from the outer edge.

Description

タッチセンサTouch sensor
　本発明は、各種の電子機器などに用いられるタッチセンサに関する。 The present invention relates to a touch sensor used for various electronic devices.
　静電容量式のタッチセンサは、電子機器の表示部の前方に搭載される。タッチセンサは、基板と、複数の電極と、電極のそれぞれに接続された配線を有する。電極は基板に配置されている。配線は基板の周縁部で引き回されている。配線を隠すように額縁状の加飾部が基板に配置されている。使用者は、タッチセンサを通じて表示部の表示内容を視認し、タッチセンサへの入力操作を行う（例えば、特許文献１参照）。 The capacitive touch sensor is mounted in front of the display unit of the electronic device. The touch sensor includes a substrate, a plurality of electrodes, and wiring connected to each of the electrodes. The electrode is disposed on the substrate. The wiring is routed around the periphery of the substrate. A frame-shaped decorative portion is arranged on the substrate so as to hide the wiring. The user visually recognizes the display content of the display unit through the touch sensor and performs an input operation to the touch sensor (see, for example, Patent Document 1).
実用新案登録第３１６８２３８号公報Utility Model Registration No. 3168238
　タッチセンサは、透光性を有する基体と、上面視で前記基体の周縁部に配置された配線と、前記基体の上面に配置された第１の加飾部と、前記基体の下面に配置された第２の加飾部とを備える。第１の加飾部は、前記配線を上面視で覆うように配置されており、前記基体の外縁端から離れて位置する外端と、前記外端に比べて前記基体の中央部に近い内端とを有する。第２の加飾部は、上面視で前記第１の加飾部の前記外端に比べて前記基体の前記中央部に近いもしくは前記第１の加飾部の前記外端と同じ位置に位置する内端と、前記第１の加飾部の前記外端よりも前記基体の外方に位置する外端とを有する。 The touch sensor is disposed on a translucent substrate, wiring disposed on a peripheral portion of the substrate in a top view, a first decorative portion disposed on the upper surface of the substrate, and a lower surface of the substrate. And a second decorating part. The first decorating portion is disposed so as to cover the wiring in a top view, and has an outer end positioned away from an outer edge end of the base and an inner portion closer to the central portion of the base than the outer end. With ends. The second decorating part is closer to the central part of the base than the outer end of the first decorating part or at the same position as the outer end of the first decorating part in a top view. And an outer end located on the outer side of the base with respect to the outer end of the first decorative portion.
　このタッチセンサは、外縁からの光漏れを抑制できる。 This touch sensor can suppress light leakage from the outer edge.
図１は実施の形態１によるタッチセンサの上面斜視図である。FIG. 1 is a top perspective view of the touch sensor according to the first embodiment. 図２は実施の形態１によるタッチセンサの下面斜視図である。FIG. 2 is a bottom perspective view of the touch sensor according to the first embodiment. 図３Ａは図１と図２に示すタッチセンサの線ＩＩＩ－ＩＩＩにおける断面図である。3A is a cross-sectional view of the touch sensor shown in FIGS. 1 and 2 along line III-III. 図３Ｂは実施の形態１による他のタッチセンサの断面図である。3B is a cross-sectional view of another touch sensor according to Embodiment 1. FIG. 図４は実施の形態１によるタッチセンサの製造方法を示す部分断面図である。FIG. 4 is a partial cross-sectional view showing the method of manufacturing the touch sensor according to the first embodiment. 図５は実施の形態１によるタッチセンサの製造方法を示す部分断面図である。FIG. 5 is a partial cross-sectional view showing the method of manufacturing the touch sensor according to the first embodiment. 図６は実施の形態１によるタッチセンサの製造方法を示す部分断面図である。FIG. 6 is a partial cross-sectional view illustrating the method of manufacturing the touch sensor according to the first embodiment. 図７は実施の形態１によるさらに他のタッチセンサの部分断面図である。FIG. 7 is a partial cross-sectional view of still another touch sensor according to the first embodiment. 図８は図７に示すタッチセンサの製造方法を示す部分断面図である。FIG. 8 is a partial cross-sectional view showing a manufacturing method of the touch sensor shown in FIG. 図９Ａは実施の形態１によるさらに他のタッチセンサの部分断面図である。FIG. 9A is a partial cross-sectional view of still another touch sensor according to Embodiment 1. FIG. 図９Ｂは実施の形態１によるさらに他のタッチセンサの部分断面図である。FIG. 9B is a partial cross-sectional view of still another touch sensor according to Embodiment 1. 図１０は実施の形態１によるさらに他のタッチセンサの部分断面図である。FIG. 10 is a partial cross-sectional view of still another touch sensor according to the first embodiment. 図１１は図１０に示すタッチセンサの製造方法を示す部分断面図である。FIG. 11 is a partial cross-sectional view showing a manufacturing method of the touch sensor shown in FIG. 図１２Ａは実施の形態１によるさらに他のタッチセンサの部分断面図である。12A is a partial cross-sectional view of still another touch sensor according to Embodiment 1. FIG. 図１２Ｂは実施の形態１によるさらに他のタッチセンサの部分断面図である。12B is a partial cross-sectional view of still another touch sensor according to Embodiment 1. FIG. 図１３は実施の形態２によるタッチセンサの部分断面図である。FIG. 13 is a partial cross-sectional view of the touch sensor according to the second embodiment.
　（実施の形態１）
　図１は実施の形態１によるタッチセンサ１の上面斜視図である。図２はタッチセンサ１の下面斜視図である。図３Ａは図１と図２に示すタッチセンサの線ＩＩＩ－ＩＩＩにおける断面図である。 (Embodiment 1)
FIG. 1 is a top perspective view of a touch sensor 1 according to the first embodiment. FIG. 2 is a bottom perspective view of the touch sensor 1. 3A is a cross-sectional view of the touch sensor shown in FIGS. 1 and 2 along line III-III.
　静電容量式のタッチセンサ１は、平板状の基体１０と、加飾部３０と、加飾部４０と、センサ用の電極７０と、電極７０に接続された配線８０とを有する。基体１０は透明で可視光を透過する透光性を有する。 The capacitive touch sensor 1 includes a flat substrate 10, a decorating unit 30, a decorating unit 40, a sensor electrode 70, and a wiring 80 connected to the electrode 70. The substrate 10 is transparent and has translucency to transmit visible light.
　図３Ａに示すように、基体１０は、上面１１と、上面１１の反対の下面１２と、傾斜面１３と、外縁端１４とを有する。傾斜面１３は加飾部３０の配置されてない外縁に位置する。上面１１は平坦面である。上面１１と傾斜面１３とは境箇所１６で繋がっている。傾斜面１３は、境箇所１６から下方に一定の勾配で下がるように傾斜している。傾斜面１３は上面１１の全周に亘って設けられており、したがって境箇所１６は上面視で上面１１を囲む枠形状を有する。傾斜面１３は基体１０の外縁端１４に繋がっている。外縁端１４は所定の高さを有し、下面１２に繋がっている。基体１０は例えばＰＣ樹脂やアクリル系樹脂などの樹脂製である。または基体１０はガラス等の他の透明で透光性を有する絶縁材料より形成されていてもよい。 3A, the base 10 has an upper surface 11, a lower surface 12 opposite to the upper surface 11, an inclined surface 13, and an outer edge end 14. The inclined surface 13 is located on the outer edge where the decorative portion 30 is not arranged. The upper surface 11 is a flat surface. The upper surface 11 and the inclined surface 13 are connected at the boundary 16. The inclined surface 13 is inclined so as to fall downward from the boundary portion 16 with a certain gradient. The inclined surface 13 is provided over the entire circumference of the upper surface 11, and thus the boundary portion 16 has a frame shape surrounding the upper surface 11 in a top view. The inclined surface 13 is connected to the outer edge 14 of the base 10. The outer edge 14 has a predetermined height and is connected to the lower surface 12. The base 10 is made of a resin such as a PC resin or an acrylic resin. Alternatively, the substrate 10 may be formed of another transparent and translucent insulating material such as glass.
　複数の電極７０および複数の配線８０は基体１０の下面１２に配置されている。複数の電極７０は下面１２の中央に配置されている。複数の配線８０は複数の電極７０に接続された一端をそれぞれ有し、下面１２の周縁で引き回されている。配線８０の他端はフレキシブル回路（ＦＰＣ）基板９０に接続される端子部として機能する。つまり、基体１０は、配線８０の端子部を含んで下面１２に設けられたＦＰＣ装着部を有する。ＦＰＣ基板９０は下面１２のＦＰＣ装着部に導電接着剤により装着されている。 The plurality of electrodes 70 and the plurality of wirings 80 are disposed on the lower surface 12 of the base body 10. The plurality of electrodes 70 are arranged at the center of the lower surface 12. The plurality of wirings 80 each have one end connected to the plurality of electrodes 70, and are routed around the periphery of the lower surface 12. The other end of the wiring 80 functions as a terminal portion connected to a flexible circuit (FPC) substrate 90. That is, the base 10 has an FPC mounting portion provided on the lower surface 12 including the terminal portion of the wiring 80. The FPC board 90 is mounted on the FPC mounting portion of the lower surface 12 with a conductive adhesive.
　電極７０の詳細構成や材質は限定されない。電極７０は、例えば帯状の外形にベタ状に形成されたＩＴＯ、透光性および導電性を有する樹脂組成物等より形成されていてもよく、または、例えば導電性細線を互いにメッシュ状に連結させた導電部で構成されていてもよい。導電性細線は銅などの導電金属などで構成される。導電性細線の幅寸法や厚み寸法は数μｍ程度である。導電部は平坦な下面１２に重ねて配置されている。配線８０は、電極７０と同様の構成を有して同様の材質より形成されていてもよい。または、配線８０は、導電ペーストを硬化した樹脂組成物等で形成されていてもよい。 The detailed configuration and material of the electrode 70 are not limited. The electrode 70 may be formed of, for example, ITO formed in a solid shape on a belt-like outer shape, a resin composition having translucency and conductivity, or, for example, conductive thin wires connected to each other in a mesh shape. It may be constituted by a conductive part. The conductive thin wire is made of a conductive metal such as copper. The width dimension and thickness dimension of the conductive thin wire are about several μm. The conductive portion is disposed so as to overlap the flat lower surface 12. The wiring 80 may have the same configuration as the electrode 70 and be formed of the same material. Or the wiring 80 may be formed with the resin composition etc. which hardened | cured the electrically conductive paste.
　図３Ｂは実施の形態１による他のタッチセンサ１Ｄの断面図である。図３Ｂにおいて、図３Ａと同じ部分には同じ参照番号を付す。図３Ｂに示す基体１０の下面１２には射出成型やレーザー加工等によって溝１２Ｐが設けられている。溝１２Ｐの内部に電極７０や配線８０が配置されている。電極７０や配線８０は上述した導電性細線などで構成される。電極７０や配線８０は上面１１に設けられていてもよく、この場合にはＦＰＣ基板９０は上面１１に装着される。 FIG. 3B is a cross-sectional view of another touch sensor 1D according to the first exemplary embodiment. In FIG. 3B, the same parts as those in FIG. 3A are denoted by the same reference numerals. A groove 12P is provided on the lower surface 12 of the substrate 10 shown in FIG. 3B by injection molding, laser processing, or the like. An electrode 70 and a wiring 80 are disposed inside the groove 12P. The electrode 70 and the wiring 80 are composed of the conductive thin wires described above. The electrode 70 and the wiring 80 may be provided on the upper surface 11. In this case, the FPC board 90 is mounted on the upper surface 11.
　図１に示すように、加飾部３０は、基体１０の上面１１に設けられており、配線８０を隠すように額縁形状を有する。すなわち、加飾部３０は、上面視で配線８０の設置箇所の上方位置を覆っている。加飾部３０は、図３Ａに示すように、実質的に一定の厚みを有する部分３１と、部分３１から外方に延びる外端部３２とを有する。外端部３２の断面は三角形状を有し、外端部３２は加飾部３０の外端３３を含む。外端３３は基体１０の境箇所１６に対応して配置されている。加飾部３０の部分３１は上面１１に重なる下面３５Ａと、下面３５Ａの反対側の上面３５とを有する。上面３５は境箇所３７で外端面３４に繋がっている。外端面３４は、外端部３２の下面３５Ａに繋がる面であり、境箇所３７と外端３３との間に位置する。外端面３４は、境箇所３７から下方に上面１１に向って一定の勾配で傾斜する。換言すれば、外端部３２は、断面視では外端３３から内側の部分３１に近づくほど厚くなっている。そして、境箇所３７と外端面３４と境箇所１６と傾斜面１３は実質的に面一である。なお、加飾部３０は互いに重ねられた複数の層により形成されていてもよい。 As shown in FIG. 1, the decorative portion 30 is provided on the upper surface 11 of the base 10 and has a frame shape so as to hide the wiring 80. That is, the decoration part 30 has covered the upper position of the installation location of the wiring 80 by the top view. As shown in FIG. 3A, the decorative portion 30 includes a portion 31 having a substantially constant thickness and an outer end portion 32 extending outward from the portion 31. The cross section of the outer end portion 32 has a triangular shape, and the outer end portion 32 includes the outer end 33 of the decorative portion 30. The outer end 33 is disposed corresponding to the boundary 16 of the base body 10. The portion 31 of the decorating part 30 has a lower surface 35A that overlaps the upper surface 11 and an upper surface 35 opposite to the lower surface 35A. The upper surface 35 is connected to the outer end surface 34 at a boundary point 37. The outer end surface 34 is a surface connected to the lower surface 35 </ b> A of the outer end portion 32, and is located between the boundary point 37 and the outer end 33. The outer end surface 34 is inclined downwardly from the boundary point 37 toward the upper surface 11 with a certain gradient. In other words, the outer end portion 32 becomes thicker as it approaches the inner portion 31 from the outer end 33 in a cross-sectional view. The boundary 37, the outer end surface 34, the boundary 16 and the inclined surface 13 are substantially flush. In addition, the decorating part 30 may be formed of a plurality of layers stacked on each other.
　加飾部３０は、外端３３から内方に延びて、配線８０を背面に隠す幅を有する。加飾部３０の色は、光透過性の小さい例えば黒色や暗色系の色であり、樹脂等の材質よりなる。加飾部３０の色は、上面視で配線８０が視認され難い色であることが望ましい。なお、加飾部３０は、平坦な上面１１に重ねて配置するので印刷などで容易に形成できる。 The decoration portion 30 extends inward from the outer end 33 and has a width that hides the wiring 80 on the back surface. The color of the decorating unit 30 is, for example, a black or dark color with low light transmissivity, and is made of a material such as a resin. It is desirable that the color of the decorating unit 30 is a color that makes it difficult for the wiring 80 to be visually recognized in a top view. In addition, since the decoration part 30 is arrange | positioned on the flat upper surface 11, it can form easily by printing etc.
　加飾部４０は、基体１０の外縁端１４から内方に下面１２に重ねて配置されている。つまり、加飾部４０の外方側の外端４２は、加飾部３０の外端３３よりも基体１０の外方に位置する。加飾部４０は上面視では例えば枠形状を有する。加飾部４０の内端４１は、上面視で加飾部３０の外端３３よりも内側に位置する。内端４１は上面視で外端３３と同じ位置に位置してもよい。 The decoration portion 40 is disposed so as to overlap the lower surface 12 inward from the outer edge 14 of the base 10. That is, the outer end 42 on the outer side of the decorating part 40 is located on the outer side of the base body 10 than the outer end 33 of the decorating part 30. The decoration part 40 has, for example, a frame shape in a top view. The inner end 41 of the decoration part 40 is located inside the outer end 33 of the decoration part 30 in a top view. The inner end 41 may be located at the same position as the outer end 33 in a top view.
　なお、加飾部４０は、図２にも示したように、配線８０が引き回されている箇所に配置されていないことが望ましい。つまり上面視で内端４１は配線８０よりも外方に配置されることが望ましい。この構成により、配線８０に起因する段差が生じないので、加飾部４０を薄くすることができる。加飾部４０は、平坦な下面１２に重ねて配置されるので印刷などで容易に形成することができる。加飾部４０も重ねられた複数の層により形成されていてもよい。 In addition, as shown in FIG. 2, it is desirable that the decoration unit 40 is not disposed at a place where the wiring 80 is routed. In other words, it is desirable that the inner end 41 is disposed outside the wiring 80 when viewed from above. With this configuration, a step due to the wiring 80 does not occur, so that the decorative portion 40 can be thinned. Since the decorating part 40 is arranged so as to overlap the flat lower surface 12, it can be easily formed by printing or the like. The decoration part 40 may also be formed of a plurality of layers that are stacked.
　加飾部４０の色は、加飾部３０と同様に光透過性の少ない例えば黒色や暗色系の色である。そして、加飾部４０を加飾部３０と同じ材料で形成することで材料の増加を抑え、かつ、両者の色調の差を小さくできる。 The color of the decoration unit 40 is, for example, a black or dark color having a low light transmission like the decoration unit 30. And the increase in material can be suppressed by forming the decoration part 40 with the same material as the decoration part 30, and the difference of both color tone can be made small.
　加飾部３０の上面３５は、透明で透光性を有するコート層５０で覆われている。コート層５０は、例えばハードコート層である。コート層５０が単層より形成される場合、ハードコート機能と光学調整機能との両者を有する層で形成されることが望ましい。コート層５０は重ねられた複数の層により形成されていてもよい。タッチセンサ１はコート層５０を備えていなくてもよい。 The upper surface 35 of the decoration part 30 is covered with a coat layer 50 that is transparent and has translucency. The coat layer 50 is a hard coat layer, for example. When the coat layer 50 is formed from a single layer, it is preferably formed of a layer having both a hard coat function and an optical adjustment function. The coat layer 50 may be formed of a plurality of stacked layers. The touch sensor 1 may not include the coat layer 50.
　コート層５０の加飾部３０に重なる箇所は、図３Ａに示したように、実質的に略一定の厚みを有する部分５１と、部分５１から外方に延びる外端部５２とを有する。外端部５２の断面は三角形状を有し、外端部５２はコート層５０の外端５３を含む。外端５３は境箇所３７に対応して配置されている。コート層５０の部分５１は上面５５と下面５５Ａとを有する。上面５５は平坦であり境箇所５６で外端面５４に繋がっている。外端面５４は、コート層５０の外端部５２の下面５５Ａの反対側に位置し、境箇所５６と外端５３との間の面である。外端面５４は、境箇所５６から下方に加飾部３０の上面３５に向って一定の勾配で傾斜する。換言すれば、外端部５２も、外端５３から内側の部分５１に近づくほど厚くなっている。そして、外端面５４と境箇所３７と加飾部３０の外端面３４と基体１０の傾斜面１３とは面一である。 As shown in FIG. 3A, the portion of the coat layer 50 that overlaps the decorative portion 30 includes a portion 51 having a substantially constant thickness and an outer end portion 52 that extends outward from the portion 51. The outer end 52 has a triangular cross section, and the outer end 52 includes an outer end 53 of the coat layer 50. The outer end 53 is arranged corresponding to the boundary point 37. The portion 51 of the coat layer 50 has an upper surface 55 and a lower surface 55A. The upper surface 55 is flat and is connected to the outer end surface 54 at a boundary 56. The outer end surface 54 is located on the opposite side of the lower surface 55 </ b> A of the outer end portion 52 of the coat layer 50 and is a surface between the boundary 56 and the outer end 53. The outer end surface 54 is inclined downwardly from the boundary point 56 toward the upper surface 35 of the decorating unit 30 with a certain gradient. In other words, the outer end portion 52 is also thicker as it approaches the inner portion 51 from the outer end 53. And the outer end surface 54, the boundary part 37, the outer end surface 34 of the decoration part 30, and the inclined surface 13 of the base | substrate 10 are flush | level.
　コート層５０は加飾部３０に加えて、加飾部３０で囲まれる内側の範囲も覆っている。この内側の範囲では、コート層５０は例えば基体１０の上面１１に重ねて配置される。加飾部３０で囲まれる内部の範囲が、使用者のタッチ操作などをする操作面である検知領域Ｒ１になる。検知領域Ｒ１では接触または近接を検知できる。検知領域Ｒ１と非検知領域Ｒ２とを含めて、コート層５０の上面５５は実質的に平坦であることが望ましい。なお、タッチセンサ１はコート層５０を備えていなくてもよい。また、コート層５０の設置範囲も適宜設定して設けてもよい。コート層５０は、上述したように加飾部３０の上面３５などに直接重ねて形成する以外に、コート層５０が付いた樹脂フィルムを貼り合わせてコート層５０を有する構成を実現してもよい。 The coat layer 50 covers the inner area surrounded by the decorative portion 30 in addition to the decorative portion 30. In this inner range, the coat layer 50 is disposed so as to overlap the upper surface 11 of the substrate 10, for example. An internal range surrounded by the decorating unit 30 is a detection region R1 that is an operation surface on which a user performs a touch operation or the like. In the detection region R1, contact or proximity can be detected. It is desirable that the upper surface 55 of the coat layer 50 including the detection region R1 and the non-detection region R2 is substantially flat. Note that the touch sensor 1 may not include the coat layer 50. Further, the installation range of the coat layer 50 may be set as appropriate. As described above, the coat layer 50 may be formed by directly overlapping the upper surface 35 of the decorating unit 30 and the like, and a configuration having the coat layer 50 by bonding a resin film with the coat layer 50 attached thereto may be realized. .
　加飾部４０は、透光性を有するコート層６０で覆われている。コート層６０は、例えばハードコート層である。コート層６０が単層よりなる場合、ハードコート機能と光学調整機能との両者を有する層で形成されることが望ましい。コート層６０は重ねられた複数の層より形成されていてもよい。 The decoration part 40 is covered with the coat layer 60 which has translucency. The coat layer 60 is, for example, a hard coat layer. When the coat layer 60 is formed of a single layer, it is preferably formed of a layer having both a hard coat function and an optical adjustment function. The coat layer 60 may be formed of a plurality of stacked layers.
　コート層６０は、加飾部４０に加えて加飾部４０の内側の範囲も覆っている。この内側の範囲では、コート層６０は例えば基体１０の下面１２に重ねて配置され、コート層６０は基体１０の下面１２に配置された電極７０および配線８０を覆って保護している。なお、図３Ｂに示すように、基体１０の下面１２に電極７０などの導電部を収容する溝１２Ｐが形成されている場合、配線８０などが溝１２Ｐの底に形成され、溝１２Ｐの基体１０の下面１２に開口する開口部に至らないこともある。この場合には、コート層６０によって溝１２Ｐが充填される。なお、タッチセンサ１はコート層６０を備えていなくてもよい。コート層６０の設置範囲においても適宜設定してもよい。コート層６０はコート層６０が付いた樹脂フィルムを貼り合わせてコート層６０を有する構成を実現してもよい。 The coat layer 60 also covers the area inside the decorative portion 40 in addition to the decorative portion 40. In this inner range, the coat layer 60 is disposed, for example, so as to overlap the lower surface 12 of the substrate 10, and the coat layer 60 covers and protects the electrode 70 and the wiring 80 disposed on the lower surface 12 of the substrate 10. As shown in FIG. 3B, when the groove 12P for accommodating the conductive portion such as the electrode 70 is formed on the lower surface 12 of the base body 10, the wiring 80 and the like are formed at the bottom of the groove 12P, and the base body 10 of the groove 12P is formed. In some cases, the opening does not reach the lower surface 12. In this case, the groove 12 </ b> P is filled with the coat layer 60. Note that the touch sensor 1 may not include the coat layer 60. You may set suitably also in the installation range of the coat layer 60. FIG. The coating layer 60 may realize a configuration having the coating layer 60 by bonding a resin film with the coating layer 60 attached thereto.
　タッチセンサ１はカバーレンズに装着しない単体の状態で、表示装置の表示面にコート層６０を対面させ、コート層５０側の面を外方に表出する操作面となるように電子機器に搭載される。つまり、タッチセンサ１は、傾斜面１３を使用者が目視する方向に向く状態で電子機器に搭載される。傾斜面１３は加飾部３０が配置されていない外縁である。タッチセンサ１では下面１２に加飾部４０が基体１０の外縁端１４から内方に延びているので、例えば表示装置からタッチセンサ１が離れている場合でも外縁からの光の漏れが抑えられる。 The touch sensor 1 is mounted on an electronic device so that the touch sensor 1 is not attached to the cover lens and the touch panel 60 faces the display surface of the display device, and the surface on the coat layer 50 side becomes an operation surface. Is done. That is, the touch sensor 1 is mounted on the electronic device in a state in which the inclined surface 13 faces in the direction in which the user views. The inclined surface 13 is an outer edge where the decorative portion 30 is not disposed. In the touch sensor 1, the decorative portion 40 extends inward from the outer edge 14 of the base 10 on the lower surface 12, so that leakage of light from the outer edge can be suppressed even when the touch sensor 1 is separated from the display device, for example.
　特許文献１に開示されているタッチセンサでは、基板の目視方向の面に絶縁インクで加飾部を配置している。この構成の場合、単体の基板に加工した状態で加飾部を印刷形成すると、加飾部の形成位置にズレを生じることがある。また、加飾部を有する部材を基板に貼り合わせる場合でも貼り合せズレを生じることがある。すなわち、いずれの場合でも基板において加飾部の配置されない外縁箇所が残る可能性があり、加飾部の配置されない外縁箇所から光漏れを生じる場合がある。 In the touch sensor disclosed in Patent Document 1, a decorative portion is arranged with insulating ink on the surface of the substrate in the viewing direction. In the case of this configuration, when the decoration part is printed and formed in a state of being processed into a single substrate, a deviation may occur in the formation position of the decoration part. Further, even when a member having a decorative portion is bonded to a substrate, bonding displacement may occur. That is, in any case, there is a possibility that an outer edge portion where the decoration portion is not arranged remains in the substrate, and light leakage may occur from the outer edge portion where the decoration portion is not arranged.
　上記のように、タッチセンサ１では外縁からの光の漏れが抑えられる。タッチセンサ１での外縁からの光漏れは、加飾部４０と加飾部３０との上面視での重なる部分を広くするほど少なくなる。例えば、傾斜面１３をＣ０．２ｍｍ～Ｃ０．５ｍｍのＣ面で設ける場合、加飾部４０の外縁端から内端４１までの幅は、２ｍｍ程度で設ける。配線８０にかからないように５ｍｍ程度の幅もしくはそれ以上の寸法で設けてもよい。さらに、タッチセンサ１では加飾部４０を下面１２に設けている。つまり、タッチセンサ１では、表示装置の表示面に近い位置で表示面からの光を加飾部４０で遮る構成にしている。加飾部４０は外縁端から内側にかけて設けると望ましいが、電子機器での搭載状態などによっては、加飾部４０を外縁端の近傍から内側にかけて配置する、つまり上面視で外端３３よりも外方で外縁端より内側位置に外方側の外端４２を有し、外端４２から内側にかけて設けた加飾部４０であっても外縁箇所からの光漏れを抑制できる場合もある。このようにタッチセンサ１での加飾部４０の設置範囲は、電子機器への搭載状態等も踏まえつつ外縁箇所からの光漏れを抑制するように設定されていてもよい。 As described above, the touch sensor 1 suppresses light leakage from the outer edge. Light leakage from the outer edge of the touch sensor 1 is reduced as the overlapping portion of the decorative portion 40 and the decorative portion 30 in a top view is widened. For example, when the inclined surface 13 is provided with a C surface of C0.2 mm to C0.5 mm, the width from the outer edge end to the inner end 41 of the decorative portion 40 is provided with about 2 mm. It may be provided with a width of about 5 mm or more so as not to cover the wiring 80. Further, in the touch sensor 1, the decorative portion 40 is provided on the lower surface 12. That is, the touch sensor 1 is configured to block the light from the display surface by the decoration unit 40 at a position close to the display surface of the display device. Although it is desirable to provide the decorative portion 40 from the outer edge end to the inner side, depending on the mounting state of the electronic device, the decorative portion 40 is arranged from the vicinity of the outer edge end to the inner side, that is, outside the outer end 33 in a top view. Even if it is the decoration part 40 which has the outer end 42 on the inner side from the outer edge end on the side and is provided from the outer end 42 to the inner side, light leakage from the outer edge portion may be suppressed. As described above, the installation range of the decoration unit 40 in the touch sensor 1 may be set so as to suppress light leakage from the outer edge portion in consideration of the mounting state on the electronic device and the like.
　上述のように、基体１０は、上面１１と、下面１２と、上面１１と下面１２とを囲む外縁端１４とを有して透光性を有する。基体１０は、接触または近接を検知できる検知領域Ｒ１と、検知領域Ｒ１を囲みかつ外縁端１４を含む非検知領域Ｒ２とを有する。検知領域Ｒ１は基体１０の中央部Ｃ１０に位置し、非検知領域Ｒ２は基体１０の中央部Ｃ１０の周囲で中央部Ｃ１０を囲む周縁部Ｐ１０に位置する。電極７０は上面視で検知領域Ｒ１内に位置する。配線８０は電極７０に接続されて、上面視で基体１０の非検知領域Ｒ２に配置されている。加飾部３０は、基体１０の上面１１に配置され、上面視で配線８０を覆う。加飾部３０は、基体１０の外縁端１４から離れて位置する外端３３と、外端３３に比べて検知領域Ｒ１に近い内端３０Ｔとを有する。加飾部４０は、基体１０の下面１２に配置され、上面視で加飾部３０の外端３３に比べて検知領域Ｒ１に近いもしくは加飾部３０の外端３３と同じ位置に位置する内端４１と、加飾部３０の外端３３よりも基体１０の外方に位置する外端４２とを有する。 As described above, the base 10 has the upper surface 11, the lower surface 12, and the outer edge 14 surrounding the upper surface 11 and the lower surface 12, and has translucency. The base 10 has a detection region R1 that can detect contact or proximity, and a non-detection region R2 that surrounds the detection region R1 and includes the outer edge 14. The detection region R1 is located in the central portion C10 of the base body 10, and the non-detection region R2 is located in the peripheral portion P10 surrounding the central portion C10 around the central portion C10 of the base body 10. The electrode 70 is located in the detection region R1 when viewed from above. The wiring 80 is connected to the electrode 70 and is disposed in the non-detection region R2 of the base 10 in a top view. The decorating unit 30 is disposed on the upper surface 11 of the base 10 and covers the wiring 80 when viewed from above. The decorating unit 30 has an outer end 33 that is located away from the outer edge 14 of the base 10 and an inner end 30T that is closer to the detection region R1 than the outer end 33. The decoration unit 40 is disposed on the lower surface 12 of the base body 10 and is closer to the detection region R1 than the outer end 33 of the decoration unit 30 or located at the same position as the outer end 33 of the decoration unit 30 in a top view. It has an end 41 and an outer end 42 located on the outer side of the base body 10 than the outer end 33 of the decorative portion 30.
　なお、タッチセンサ１は、傾斜面１３が操作面の外縁に位置するので、電子機器の筐体に対して小さい段差で搭載可能である。また、傾斜面１３に加飾部３０が配置されていないので、傾斜面１３での加飾部３０の形成ムラが無く見栄えもよい。 The touch sensor 1 can be mounted with a small step with respect to the housing of the electronic device because the inclined surface 13 is located at the outer edge of the operation surface. Moreover, since the decoration part 30 is not arrange | positioned at the inclined surface 13, the formation unevenness of the decoration part 30 in the inclined surface 13 does not have a good appearance.
　続いて、タッチセンサ１の製造過程を説明する。図４から図６はタッチセンサ１の製造方法を示す部分断面図である。 Subsequently, the manufacturing process of the touch sensor 1 will be described. 4 to 6 are partial cross-sectional views showing a method for manufacturing the touch sensor 1.
　まず、図４に示すように、平板形状を有する基体用部材１００を準備する。基体用部材１００は、上面１１Ａと、下面１２Ａと、上面１１Ａと下面１２Ａとに繋がり上面１１Ａと下面１２Ａとを囲む外縁端１４Ａとを有する。そして、基体用部材１００の上面１１Ａに、図５に示すように、一定の厚みを有して額縁形状を有する加飾部３０Ａを形成する。そして、図６に示すように、加飾部３０Ａ上にコート層５０Ａを形成する。コート層５０Ａの加飾部３０Ａに重なる部分は一定の厚みを有する。なお、図６では、基体１０の外方側にあたるコート層５０Ａの外側端は加飾部３０Ａの外側端と揃っているが、これらの外側端の位置関係は特に限定されず、ずれていてもよい。電極７０、配線８０の形成順序も特に限定されない。同様に加飾部４０およびコート層６０の形成順序も限定はされないが、図５および図６では加飾部４０、コート層６０を形成した状態で示している。 First, as shown in FIG. 4, a base member 100 having a flat plate shape is prepared. The base member 100 has an upper surface 11A, a lower surface 12A, and an outer edge end 14A that is connected to the upper surface 11A and the lower surface 12A and surrounds the upper surface 11A and the lower surface 12A. And as shown in FIG. 5, the decoration part 30A which has a fixed thickness and has a frame shape is formed in the upper surface 11A of the member 100 for base | substrates. Then, as shown in FIG. 6, a coat layer 50A is formed on the decorative portion 30A. The portion of the coat layer 50A that overlaps the decorative portion 30A has a certain thickness. In FIG. 6, the outer end of the coat layer 50 </ b> A corresponding to the outer side of the base body 10 is aligned with the outer end of the decorative portion 30 </ b> A, but the positional relationship between these outer ends is not particularly limited and may be shifted. Good. The order of forming the electrode 70 and the wiring 80 is not particularly limited. Similarly, although the formation order of the decoration part 40 and the coat layer 60 is not limited, the decoration part 40 and the coat layer 60 are shown in FIGS. 5 and 6.
　その後、図６に示すように、コート層５０Ａ、加飾部３０Ａ、基体用部材１００にかけて上面１１Ａの角部をＣ面である切断面Ｃ１で面取りする。これによって、外端面５４などを含む形状のコート層５０、外端面３４などを含む形状の加飾部３０および、傾斜面１３などを含む形状の基体１０が同時に形成される。この製造工程により、境箇所１６と外端３３との位置ズレなどを抑えつつ、少ない工数でタッチセンサ１を製造できる。また、この製造工程により、外端面３４と境箇所１６と傾斜面１３などを容易に画一にすることができる。 Then, as shown in FIG. 6, the corner of the upper surface 11 </ b> A is chamfered with a cut surface C <b> 1 that is a C surface over the coat layer 50 </ b> A, the decorative portion 30 </ b> A, and the base member 100. Thus, the coat layer 50 including the outer end surface 54 and the like, the decorative portion 30 including the outer end surface 34 and the base 10 including the inclined surface 13 and the like are simultaneously formed. With this manufacturing process, it is possible to manufacture the touch sensor 1 with a small number of man-hours while suppressing misalignment between the boundary 16 and the outer end 33. In addition, the outer end surface 34, the boundary 16 and the inclined surface 13 can be easily made uniform by this manufacturing process.
　タッチセンサ１での面取りの形状すなわち切断面Ｃ１の形状は平面であるＣ面以外であってもよい。例えば、操作面側の角部を所定の半径を有する部分円筒面であるＲ形状などで面取りしてもよい。 The chamfered shape of the touch sensor 1, that is, the shape of the cut surface C1 may be other than the C surface which is a plane. For example, the corner on the operation surface side may be chamfered with an R shape that is a partial cylindrical surface having a predetermined radius.
　図７は実施の形態１によるさらに他のタッチセンサ１Ａの部分断面図である。図８はタッチセンサ１Ａの製造方法を示す部分断面図である。図７と図８において図３Ａに示すタッチセンサ１と同じ部分には同じ参照番号を付す。タッチセンサ１Ａではタッチセンサ１と製造過程の順序が異なる。 FIG. 7 is a partial cross-sectional view of still another touch sensor 1A according to the first embodiment. FIG. 8 is a partial cross-sectional view showing a manufacturing method of the touch sensor 1A. 7 and 8, the same reference numerals are given to the same parts as those of the touch sensor 1 shown in FIG. 3A. The touch sensor 1A differs from the touch sensor 1 in the order of manufacturing processes.
　図７に示すタッチセンサ１Ａは、図３Ａに示すタッチセンサ１のコート層５０の代わりに、コート層５０と異なる形状を有するコート層５０Ｂを備える。タッチセンサ１Ａを製造するには、まず図５に示すように、基体用部材１００を準備して、上面１１Ａに加飾部３０Ａを額縁状に形成する。その後、図８に示すように上面１１Ａ側の角部を切断面Ｃ１で面取りして、加飾部３０付きの基体１０に形成する。そして、加飾部３０に重なるように境箇所３７から内側の範囲にコート層５０Ｂを形成してタッチセンサ１Ａを得る。なお、タッチセンサ１の場合と同様に面取りの形状すなわち切断面Ｃ１の形状はＣ面以外でもよい。なお、図７に示すタッチセンサ１Ａでは、例えば、コート層５０Ｂは、境箇所３７を越えて加飾部３０の外端面３４を部分的もしくは全面で覆っていてもよい。さらには、コート層５０Ｂは、境箇所１６をも越えて傾斜面１３も部分的もしくは全面で覆っていてもよい。これらの例を以下に説明する。 7 is provided with a coat layer 50B having a shape different from that of the coat layer 50, instead of the coat layer 50 of the touch sensor 1 shown in FIG. 3A. In order to manufacture the touch sensor 1A, first, as shown in FIG. 5, the base member 100 is prepared, and the decorative portion 30A is formed in a frame shape on the upper surface 11A. Then, as shown in FIG. 8, the corner | angular part by the side of the upper surface 11A is chamfered by the cut surface C1, and it forms in the base | substrate 10 with the decorating part 30. FIG. And the coating layer 50B is formed in the inner side range from the boundary location 37 so that it may overlap with the decorating part 30, and the touch sensor 1A is obtained. As in the case of the touch sensor 1, the chamfered shape, that is, the shape of the cut surface C1 may be other than the C surface. In the touch sensor 1 </ b> A illustrated in FIG. 7, for example, the coat layer 50 </ b> B may partially or entirely cover the outer end surface 34 of the decorating unit 30 beyond the boundary portion 37. Furthermore, the coat layer 50 </ b> B may cover the inclined surface 13 partially or entirely beyond the boundary 16. Examples of these are described below.
　図９Ａは実施の形態１によるさらに他のタッチセンサ１Ｂの部分断面図である。図９Ａにおいて図７と図８に示すタッチセンサ１Ａと同じ部分には同じ参照番号を付す。タッチセンサ１Ｂではタッチセンサ１Ａと同様の順序で加飾部３０とコート層５０Ｂが形成される。タッチセンサ１Ｂではコート層５０Ｂは、境箇所３７を越えて加飾部３０の外端面３４を部分的もしくは全面で覆っており、上面視で基体１０の外縁端１４まで延びている。特にタッチセンサ１Ｂでは、基体１０の下面１２からコート層５０Ｂの上面までの高さは検知領域Ｒ１から基体１０の外縁端１４まで一定であり、すなわち、タッチセンサ１Ｂは検知領域Ｒ１と非検知領域Ｒ２とに亘って一定の厚みを有する。 FIG. 9A is a partial cross-sectional view of still another touch sensor 1B according to the first exemplary embodiment. 9A, the same reference numerals are assigned to the same portions as those of the touch sensor 1A shown in FIGS. In the touch sensor 1B, the decoration part 30 and the coat layer 50B are formed in the same order as the touch sensor 1A. In the touch sensor 1 </ b> B, the coat layer 50 </ b> B covers the outer end surface 34 of the decorative portion 30 partially or entirely beyond the boundary 37, and extends to the outer edge 14 of the base 10 in a top view. In particular, in the touch sensor 1B, the height from the lower surface 12 of the substrate 10 to the upper surface of the coat layer 50B is constant from the detection region R1 to the outer edge 14 of the substrate 10, that is, the touch sensor 1B has the detection region R1 and the non-detection region. It has a certain thickness over R2.
　図９Ｂは実施の形態１によるさらに他のタッチセンサ１Ｃの部分断面図である。図９Ｂにおいて図９Ａに示すタッチセンサ１Ｂと同じ部分には同じ参照番号を付す。タッチセンサ１Ｃではタッチセンサ１Ａと同様の順序で加飾部３０とコート層５０Ｂが形成される。タッチセンサ１Ｃではコート層５０Ｂは、境箇所３７を越えて加飾部３０の外端面３４を部分的もしくは全面で覆っており、上面視で基体１０の外縁端１４まで傾斜面１３に実質的に平行に傾斜面１３に沿って延びている。 FIG. 9B is a partial cross-sectional view of still another touch sensor 1C according to the first exemplary embodiment. 9B, the same reference numerals are given to the same portions as those of the touch sensor 1B shown in FIG. 9A. In the touch sensor 1C, the decorative portion 30 and the coat layer 50B are formed in the same order as the touch sensor 1A. In the touch sensor 1 </ b> C, the coat layer 50 </ b> B partially or entirely covers the outer end surface 34 of the decorative portion 30 beyond the boundary 37, and substantially covers the inclined surface 13 up to the outer edge 14 of the base 10 in a top view. It extends along the inclined surface 13 in parallel.
　図９Ａと図９Ｂに示すタッチセンサ１Ｂ、１Ｃではコート層５０Ｂが境箇所３７を越えて加飾部３０の外端面３４を部分的に覆う場合には形成ムラが生じる場合がある。その場合でも、コート層５０Ｂは透明なので形成ムラは視認しにくい。そして、コート層５０Ｂを境箇所１６を越えて配置していると、加飾部３０の外端３３からの剥離等を抑制できる。 In the touch sensors 1B and 1C shown in FIGS. 9A and 9B, uneven formation may occur when the coat layer 50B partially covers the outer end surface 34 of the decorative portion 30 beyond the boundary 37. Even in that case, since the coat layer 50B is transparent, formation unevenness is difficult to visually recognize. And if coat layer 50B is arranged beyond boundary part 16, exfoliation from outer end 33 of decoration part 30 can be controlled.
　図１０は実施の形態１によるさらに他のタッチセンサ１Ｅの部分断面図である。図１１はタッチセンサ１Ｅの製造方法を示す部分断面図である。図１０と図１１において図３Ａに示すタッチセンサ１と同じ部分には同じ参照番号を付す。タッチセンサ１Ｅではタッチセンサ１、１Ａと製造過程の順序が異なる。 FIG. 10 is a partial cross-sectional view of still another touch sensor 1E according to the first embodiment. FIG. 11 is a partial cross-sectional view showing a manufacturing method of the touch sensor 1E. 10 and 11, the same reference numerals are assigned to the same parts as those of the touch sensor 1 shown in FIG. 3A. The touch sensor 1E differs from the touch sensors 1 and 1A in the order of manufacturing processes.
　図１０に示すタッチセンサ１Ｅは、図３Ａに示すタッチセンサ１の加飾部３０とコート層５０の代わりに、加飾部３０とコート層５０とそれぞれ形状が異なる加飾部３０Ｂとコート層５０Ｂとを備える。まず基体用部材１００を準備し、基体用部材１００に対して図１１に示すように基体１０Ａの上面１１Ａの角部をＣ面で面取りして基体１０に形成する。その後、基体１０の上面１１に額縁形状を有して実質的に一定の厚みを有する加飾部３０Ｂを形成する。加飾部３０Ｂの外端３３Ａの位置を境箇所１６に合わせる。つまり、加飾部３０Ｂは、外端３３Ａから内方にかけて実質的に一定の厚みを有する。そして、コート層５０Ｂを加飾部３０Ｂに重なるように形成してタッチセンサ１Ｅを得る。加飾部３０Ｂの外端３３Ａを覆うようにコート層５０Ｂが設けられていてもよい。なお、タッチセンサ１、１Ａの場合と同様に面取り形状はＣ面以外でもよい。なお、タッチセンサ１Ｅでは、例えば、加飾部３０Ｂは、境箇所１６を越えて傾斜面１３を部分的に覆っていてもよい。さらに境箇所１６を越えて配置されている加飾部３０Ｂをコート層５０Ｂが覆っていてもよい。この場合、コート層５０Ｂは加飾部３０Ｂと同じ位置まで延びていてもよく、または、傾斜面１３を部分的もしくは全面で覆っていてもよい。これらの例を以下に説明する。 A touch sensor 1E shown in FIG. 10 is different from the decorating part 30 and the coat layer 50 of the touch sensor 1 shown in FIG. 3A in that the decorating part 30B and the coat layer 50B have different shapes. With. First, the base member 100 is prepared, and the base member 100 is formed on the base 10 by chamfering the corners of the upper surface 11A of the base 10A with the C surface as shown in FIG. Thereafter, a decorative portion 30B having a frame shape and a substantially constant thickness is formed on the upper surface 11 of the base 10. The position of the outer end 33 </ b> A of the decorative portion 30 </ b> B is aligned with the boundary 16. That is, the decorative portion 30B has a substantially constant thickness from the outer end 33A to the inner side. And coat layer 50B is formed so that it may overlap with decoration part 30B, and touch sensor 1E is obtained. A coat layer 50B may be provided so as to cover the outer end 33A of the decorative portion 30B. Note that the chamfered shape may be other than the C surface as in the case of the touch sensors 1 and 1A. In the touch sensor 1E, for example, the decorative portion 30B may partially cover the inclined surface 13 beyond the boundary 16. Furthermore, the coat layer 50 </ b> B may cover the decorative portion 30 </ b> B disposed beyond the boundary 16. In this case, the coat layer 50B may extend to the same position as the decorative portion 30B, or may cover the inclined surface 13 partially or entirely. Examples of these are described below.
　図１２Ａは実施の形態１によるさらに他のタッチセンサ１Ｆの部分断面図である。図１２Ａにおいて図１０に示すタッチセンサ１Ｅと同じ部分には同じ参照番号を付す。タッチセンサ１Ｆではタッチセンサ１Ｅと同様の順序で加飾部３０Ｂとコート層５０Ｂが形成される。タッチセンサ１Ｆではコート層５０Ｂは、加飾部３０Ｂを覆い、かつ加飾部３０Ｂの外端３３Ａを越えて配置され、上面視で基体１０の外縁端１４まで延びている。特にタッチセンサ１Ｆでは、基体１０の下面１２からコート層５０Ｂの上面までの高さは検知領域Ｒ１から基体１０の外縁端１４まで一定であり、すなわち、タッチセンサ１Ｆは検知領域Ｒ１と非検知領域Ｒ２とに亘って一定の厚みを有する。 FIG. 12A is a partial cross-sectional view of still another touch sensor 1F according to the first exemplary embodiment. In FIG. 12A, the same reference numerals are given to the same portions as those of the touch sensor 1E shown in FIG. In the touch sensor 1F, the decorative portion 30B and the coat layer 50B are formed in the same order as the touch sensor 1E. In the touch sensor 1F, the coat layer 50B covers the decorative portion 30B, is disposed beyond the outer end 33A of the decorative portion 30B, and extends to the outer edge 14 of the base 10 in a top view. In particular, in the touch sensor 1F, the height from the lower surface 12 of the substrate 10 to the upper surface of the coat layer 50B is constant from the detection region R1 to the outer edge 14 of the substrate 10, that is, the touch sensor 1F has the detection region R1 and the non-detection region. It has a certain thickness over R2.
　図１２Ｂは実施の形態１によるさらに他のタッチセンサ１Ｇの部分断面図である。図１２Ｂにおいて図１２Ａに示すタッチセンサ１Ｆと同じ部分には同じ参照番号を付す。タッチセンサ１Ｇではタッチセンサ１Ｅと同様の順序で加飾部３０Ｂとコート層５０Ｂが形成される。タッチセンサ１Ｇでは加飾部３０Ｂは境箇所１６を越えて配置されている。すなわち、加飾部３０Ｂの外端３３Ｂは傾斜面１３上で境箇所１６と外縁端１４との間に位置する。コート層５０Ｂは、加飾部３０Ｂを覆い、かつ加飾部３０Ｂの外端３３Ｂを越えて配置され、上面視で基体１０の外縁端１４まで傾斜面１３に実質的に平行に傾斜面１３に沿って延びている。 FIG. 12B is a partial cross-sectional view of still another touch sensor 1G according to the first exemplary embodiment. In FIG. 12B, the same reference numerals are given to the same portions as those of the touch sensor 1F shown in FIG. 12A. In the touch sensor 1G, the decorative portion 30B and the coat layer 50B are formed in the same order as the touch sensor 1E. In the touch sensor 1G, the decorative portion 30B is disposed beyond the boundary 16. That is, the outer end 33 </ b> B of the decorative portion 30 </ b> B is located between the boundary 16 and the outer edge 14 on the inclined surface 13. The coat layer 50B covers the decorative portion 30B and is disposed beyond the outer end 33B of the decorative portion 30B, and is substantially parallel to the inclined surface 13 up to the outer edge 14 of the base body 10 when viewed from above. Extending along.
　図１２Ａと図１２Ｂに示すタッチセンサ１Ｆ、１Ｇではコート層５０Ｂが加飾部３０Ｂの外端３３Ａ、３３Ｂを越えて覆うので外端３３Ａ、３３Ｂからの剥がれ等を抑制できる。コート層５０Ｂが加飾部３０Ｂの外端３３Ａ、３３Ｂを部分的に覆う場合には形成ムラが生じる場合がある。その場合でも、コート層５０Ｂは透明なので形成ムラは視認しにくい。 In the touch sensors 1F and 1G shown in FIGS. 12A and 12B, the coat layer 50B covers the outer ends 33A and 33B of the decorative portion 30B, so that peeling from the outer ends 33A and 33B can be suppressed. When the coat layer 50B partially covers the outer ends 33A and 33B of the decorative portion 30B, formation unevenness may occur. Even in that case, since the coat layer 50B is transparent, formation unevenness is difficult to visually recognize.
　なお、以上のタッチセンサ１、１Ａ～１Ｇの傾斜面１３は面取り以外の加工で形成されていてもよい。 Note that the inclined surfaces 13 of the above touch sensors 1, 1A to 1G may be formed by processing other than chamfering.
　（実施の形態２）
　図１３は実施の形態によるタッチセンサ１Ｈの部分断面図である。図３Ａに示す実施の形態１によるタッチセンサ１と同じ部分には同じ参照符号を付す。上記の実施の形態１によるタッチセンサ１、１Ａ～１Ｇでは、目視方向の面側である上方の外縁箇所に基体１０の傾斜面１３を含む。 (Embodiment 2)
FIG. 13 is a partial cross-sectional view of the touch sensor 1H according to the embodiment. The same parts as those in the touch sensor 1 according to Embodiment 1 shown in FIG. In the touch sensors 1 and 1A to 1G according to the first embodiment, the inclined surface 13 of the base body 10 is included in the upper outer edge portion that is the surface side in the viewing direction.
　図１３に示すタッチセンサ１Ｈはタッチセンサ１の基体１０の代わりに基体１０と形状が異なる基体１０Ａを備える。基体１０Ａは前述した基体用部材１００に面取りをすることなく、そのまま用いられている。基体１０Ａは外縁端１４Ａを有する。基体１０Ａの上面１１Ａに加飾部３０Ｃが重ねて配置され、さらに加飾部３０Ｃを覆うようにコート層５０Ｃが配置されている。コート層５０Ｃは基体１０Ａの外縁端１４Ａまで延びている。加飾部３０Ｃの外端３３Ｂは基体１０Ａの外縁端１４Ａから離れて外縁端１４Ａよりも内側に位置する。なお、加飾部３０Ｃは、外端３３Ｂから内方にかけて実質的に一定の厚みを有する。外端３３Ｂは、加飾部４０の内端４１に対して上面視で同じ位置もしくは内端４１よりも外方の外縁端１４Ａに近い位置に配置されている。 13 includes a base body 10A having a shape different from that of the base body 10 instead of the base body 10 of the touch sensor 1. The base 10A is used as it is without chamfering the base member 100 described above. The base 10A has an outer edge 14A. The decoration portion 30C is disposed so as to overlap the upper surface 11A of the base body 10A, and the coat layer 50C is disposed so as to cover the decoration portion 30C. The coat layer 50C extends to the outer edge 14A of the base 10A. The outer end 33B of the decorative portion 30C is located farther from the outer edge end 14A of the base body 10A than the outer edge end 14A. The decorative portion 30C has a substantially constant thickness from the outer end 33B to the inner side. The outer end 33 </ b> B is arranged at the same position with respect to the inner end 41 of the decorative portion 40 in a top view or a position closer to the outer edge 14 </ b> A on the outer side than the inner end 41.
　以上のように、タッチセンサ１Ｈでは、加飾部３０Ｃの配置されてない外縁箇所は上面１１Ａそのものの外縁部分であり、図３Ａに示す面取りをした傾斜面１３以外の構成を有する。この外縁部分の反対側の下面１２Ａの範囲に加飾部４０が設けられている。この構成でも加飾部３０Ｃの配置されてない外縁箇所からの光漏れは抑制できる。なお、加飾部４０は、上面視で外端３３Ｂよりも外方で基体１０Ａの外縁端１４Ａと同じ位置もしくは外縁端１４Ａより内側に位置する外端４２を有し、外端４２から内方に延びる。 As described above, in the touch sensor 1H, the outer edge portion where the decorative portion 30C is not arranged is the outer edge portion of the upper surface 11A itself, and has a configuration other than the chamfered inclined surface 13 shown in FIG. 3A. The decoration part 40 is provided in the range of the lower surface 12A opposite to the outer edge part. Even in this configuration, it is possible to suppress light leakage from the outer edge where the decorative portion 30C is not disposed. In addition, the decoration part 40 has the outer end 42 located outside the outer end 33B at the same position as the outer edge end 14A of the base body 10A or on the inner side of the outer edge end 14A in the top view, and from the outer end 42 to the inner side. It extends to.
　タッチセンサ１Ｈでは、コート層５０Ｃは加飾部３０Ｃの外端３３Ｂから基体１０Ａの外縁端１４Ａまでの周縁部５０Ｄを有する。周縁部５０Ｄは上面１１Ａに重なって配置されている。この構成により、加飾部３０Ｃは外端３３Ｂを含めてコート層５０Ｃで保護される。なお、タッチセンサ１Ｈの変形例として、コート層５０Ｃは加飾部３０Ｃの外端３３Ｂまでに延びていてもよい。 In the touch sensor 1H, the coat layer 50C has a peripheral portion 50D from the outer end 33B of the decorative portion 30C to the outer edge 14A of the base 10A. The peripheral edge portion 50D is disposed so as to overlap the upper surface 11A. With this configuration, the decorative portion 30C is protected by the coat layer 50C including the outer end 33B. As a modification of the touch sensor 1H, the coat layer 50C may extend to the outer end 33B of the decorative portion 30C.
　なお、実施の形態１、２によるタッチセンサ１、１Ａ～１Ｈでは、加飾部３０～３０Ｃと加飾部４０が基体１０、１０Ａに直接設けられている。加飾部３０、３０Ａ～３０Ｃと加飾部４０は、加飾部３０、３０Ａ～３０Ｃや加飾部４０に相応する加飾部を有するフィルムなどの別部材を基体１０、１０Ａに装着して設けてもよい。その装着方法は接着、接合、溶着など特に限定されない。 In the touch sensors 1 and 1A to 1H according to the first and second embodiments, the decorating units 30 to 30C and the decorating unit 40 are directly provided on the bases 10 and 10A. The decoration parts 30, 30A to 30C and the decoration part 40 are mounted on the base 10, 10A with another member such as a film having a decoration part corresponding to the decoration parts 30, 30A to 30C and the decoration part 40. It may be provided. The mounting method is not particularly limited, such as adhesion, bonding, and welding.
　さらに、基体１０、１０Ａの外形は平板形状に限定されることはなく、曲面板形状であってもよい。また、基体１０、１０Ａは、リジットな板状部材であってもよいし、フレキシブル性を有するフィルムなどで構成されていてもよい。 Furthermore, the outer shape of the base 10 or 10A is not limited to a flat plate shape, and may be a curved plate shape. Further, the bases 10 and 10A may be rigid plate-like members, or may be constituted by a flexible film or the like.
　なお、実施の形態１、２によるタッチセンサ１、１Ａ～１Ｈにおいては、上面視で加飾部３０～３０Ｃと加飾部４０との重なり合う箇所に文字や図形等のマークが設置されていてもよい。例えば、加飾部３０、３０Ａ～３０Ｃにおいて、上面視で加飾部４０との重なり合う箇所に貫通孔を形成して文字や図形等のマークを形成することができる。そして、マークを形成した箇所の反対側に中間加飾部を基体１０、１０Ａの下面１２、１２Ａに配置してもよい。さらに中間加飾部を覆い込むように加飾部４０を配置する。中間加飾部は加飾部３０、３０Ａ～３０Ｃ、加飾部４０とは異なる色を有する。この構成によれば、表示装置すなわち下方からの中間加飾部への光の入射を加飾部４０で抑制できる。したがって、加飾部３０～３０Ｃ側の上方から、マークは、予め設定されている色と少ない色調の差で視認できる。 In the touch sensors 1 and 1A to 1H according to the first and second embodiments, even if a mark such as a character or a figure is installed at a place where the decoration portions 30 to 30C and the decoration portion 40 overlap in a top view. Good. For example, in the decorative portions 30, 30A to 30C, a mark such as a character or a figure can be formed by forming a through-hole at a position overlapping the decorative portion 40 in a top view. And you may arrange | position an intermediate decoration part in the lower surface 12 and 12A of the base | substrate 10, 10A on the opposite side of the location which formed the mark. Furthermore, the decoration part 40 is arrange | positioned so that an intermediate decoration part may be covered. The intermediate decorating unit has a color different from that of the decorating units 30, 30 </ b> A to 30 </ b> C, and the decorating unit 40. According to this configuration, the decoration unit 40 can suppress the incidence of light to the display device, that is, the intermediate decoration unit from below. Therefore, the mark can be visually recognized from above the decorating portions 30 to 30C with a small difference in color tone from the preset color.
　実施形態において、「上面」「下面」「上面視」等の方向を示す用語は基体や配線等のタッチセンサの構成部品の相対的な位置関係でのみ決まる相対的な方向を示し、鉛直方向等の絶対的な方向を示すものではない。 In the embodiment, terms indicating directions such as “upper surface”, “lower surface”, and “top view” indicate relative directions determined only by the relative positional relationship of the components of the touch sensor such as the base and wiring, and the vertical direction, etc. It does not indicate the absolute direction.
　本発明にかかるタッチセンサは、加飾部の配置されてない外縁箇所からの光漏れを抑制でき、各種電子機器に有用である。 The touch sensor according to the present invention can suppress light leakage from an outer edge portion where no decorative portion is arranged, and is useful for various electronic devices.
１，１Ａ～１Ｈ　　タッチセンサ
１０，１０Ａ　　基体
１２Ｐ　　溝
１３　　傾斜面
１６　　境箇所
３０，３０Ａ，３０Ｂ，３０Ｃ　　加飾部（第１の加飾部）
３７　　境箇所
４０　　加飾部（第２の加飾部）
５０，５０Ａ，５０Ｂ，５０Ｃ　　コート層（第１のコート層）
５０Ｄ　　周縁部
５６　　境箇所
６０　　コート層（第２のコート層）
７０　　電極
８０　　配線
９０　　ＦＰＣ基板
１００　　基体用部材 1, 1A to 1H Touch sensor 10, 10A Base 12P Groove 13 Inclined surface 16 Boundary location 30, 30A, 30B, 30C Decorating part (first decorating part)
37 border 40 decoration part (second decoration part)
50, 50A, 50B, 50C Coat layer (first coat layer)
50D Peripheral part 56 Boundary point 60 Coat layer (second coat layer)
70 Electrode 80 Wiring 90 FPC board 100 Base member

Claims (14)

  1. 　　　上面と、下面と、前記上面と前記下面とを囲む外縁端とを有して透光性を有する基体と、
    　　　上面視で前記基体の周縁部に配置された配線と、
    　　　前記基体の前記上面に前記配線を上面視で覆うように配置され、前記基体の前記外縁端から離れて位置する外端と、前記外端に比べて前記基体の中央部に近い内端とを有する第１の加飾部と、
    　　　前記基体の前記下面に配置され、上面視で前記第１の加飾部の前記外端に比べて前記基体の前記中央部に近いもしくは前記第１の加飾部の前記外端と同じ位置に位置する内端と、前記第１の加飾部の前記外端よりも前記基体の外方に位置する外端とを有する第２の加飾部と、
    を備えたタッチセンサ。     A translucent base body having an upper surface, a lower surface, and an outer edge that surrounds the upper surface and the lower surface;
    Wiring arranged on the peripheral edge of the base body in a top view;
    The upper surface of the base is disposed so as to cover the wiring in a top view, and an outer end located away from the outer edge of the base and an inner end closer to the center of the base than the outer end A first decorating part having,
    Arranged on the lower surface of the base body and closer to the central portion of the base body or at the same position as the outer end of the first decorative portion than the outer end of the first decorative portion in a top view. A second decorating part having an inner end located and an outer end located outside the base from the outer end of the first decorating part;
    Touch sensor equipped with.
  2. 前記第２の加飾部の前記外端は前記基体の前記外縁端に位置する、請求項１に記載のタッチセンサ。 The touch sensor according to claim 1, wherein the outer end of the second decorative portion is located at the outer edge of the base.
  3. 前記基体は、前記上面と第１の境箇所で繋がりかつ前記基体の前記外縁端に向かって延びる傾斜面をさらに有し、
    前記第２の加飾部の前記内端は、上面視で前記第１の境箇所に比べて前記基体の前記中央部に近いもしくは前記第１の境箇所と同じ位置に位置する、請求項１に記載のタッチセンサ。     The base further includes an inclined surface connected to the upper surface at a first boundary and extending toward the outer edge of the base;
    The inner end of the second decorative portion is located closer to the central portion of the base body or at the same position as the first boundary portion than the first boundary portion in a top view. Touch sensor as described in.
  4. 前記第１の加飾部は、前記第１の加飾部の前記外端に繋がる外端部を有し、
    前記第１の加飾部の前記外端部の厚みは前記第１の加飾部の前記外端から前記第１の加飾部の前記内端に近づくほど大きくなる、請求項３に記載のタッチセンサ。     The first decorating part has an outer end connected to the outer end of the first decorating part,
    The thickness of the said outer end part of a said 1st decorating part becomes so large that it approaches the said inner end of the said 1st decorating part from the said outer end of the said 1st decorating part. Touch sensor.
  5. 前記第１の加飾部の前記外端部は、前記基体の前記上面に位置する下面と、前記下面に繋がる外端面とを有し、
    前記第１の加飾部の前記外端部の前記外端面と前記第１の境箇所と前記基体の前記傾斜面とは面一である、請求項４に記載のタッチセンサ。     The outer end portion of the first decorative portion has a lower surface located on the upper surface of the base and an outer end surface connected to the lower surface,
    The touch sensor according to claim 4, wherein the outer end surface of the outer end portion of the first decoration portion, the first boundary portion, and the inclined surface of the base body are flush with each other.
  6. 前記配線は前記基体の前記下面の下方に設けられている、請求項１に記載のタッチセンサ。 The touch sensor according to claim 1, wherein the wiring is provided below the lower surface of the base body.
  7. 前記配線は前記基体の前記下面に設けられており、
    前記第２の加飾部の前記内端は前記配線よりも前記基体の外方に位置する、請求項６に記載のタッチセンサ。     The wiring is provided on the lower surface of the base;
    The touch sensor according to claim 6, wherein the inner end of the second decorating portion is located outside the base with respect to the wiring.
  8. 前記第１の加飾部は、前記第１の加飾部の前記外端から前記第１の加飾部の前記内端まで実質的に一定の厚みを有する、請求項１に記載のタッチセンサ。 The touch sensor according to claim 1, wherein the first decorative portion has a substantially constant thickness from the outer end of the first decorative portion to the inner end of the first decorative portion. .
  9. 前記第１の加飾部と前記第２の加飾部とは同じ材質によって形成されている、請求項１に記載のタッチセンサ。 The touch sensor according to claim 1, wherein the first decorative portion and the second decorative portion are formed of the same material.
  10. 前記第１の加飾部の上面と、前記基体の前記中央部での前記基体の前記上面の部分とを覆う第１のコート層をさらに備えた、請求項１から９のいずれか一項に記載のタッチセンサ。 10. The apparatus according to claim 1, further comprising a first coat layer that covers an upper surface of the first decorative portion and a portion of the upper surface of the base at the central portion of the base. The touch sensor described.
  11. 前記第１のコート層は前記基体の前記外縁端まで延びている、請求項１０に記載のタッチセンサ。 The touch sensor according to claim 10, wherein the first coat layer extends to the outer edge of the base body.
  12. 前記第２の加飾部の下面と、前記基体の前記中央部での前記基体の前記下面の部分とを覆う第２のコート層をさらに備えた、請求項１０または１１に記載のタッチセンサ。 12. The touch sensor according to claim 10, further comprising a second coat layer that covers a lower surface of the second decorating portion and a portion of the lower surface of the base at the central portion of the base.
  13. 前記第２の加飾部の下面と、前記基体の前記中央部での前記基体の前記下面の部分とを覆うコート層をさらに備えた、請求項１から９のいずれか一項に記載のタッチセンサ。 The touch according to any one of claims 1 to 9, further comprising a coat layer that covers a lower surface of the second decorative portion and a portion of the lower surface of the base at the central portion of the base. Sensor.
  14. 前記基体の前記下面には前記配線が配置された溝が形成されている、請求項１から１３のいずれか一項に記載のタッチセンサ。 The touch sensor according to claim 1, wherein a groove in which the wiring is disposed is formed on the lower surface of the base body.
PCT/JP2017/036940 2016-12-14 2017-10-12 Touch sensor WO2018110060A1 (en)

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