CN110506251B - touch sensor - Google Patents
touch sensor Download PDFInfo
- Publication number
- CN110506251B CN110506251B CN201880024960.8A CN201880024960A CN110506251B CN 110506251 B CN110506251 B CN 110506251B CN 201880024960 A CN201880024960 A CN 201880024960A CN 110506251 B CN110506251 B CN 110506251B
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- receiving
- electrodes
- receiving electrode
- sensor
- electrode
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Classifications
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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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
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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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04107—Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04108—Touchless 2D- digitiser, i.e. digitiser detecting the X/Y position of the input means, finger or stylus, also when it does not touch, but is proximate to the digitiser's interaction surface without distance measurement in the Z direction
Abstract
The touch sensor (1) is provided with a sensor unit (10), and the sensor unit (10) can detect a touch operation by a finger of a user touching the operation surface (2 b). The outer receiving electrodes (13, 13) are provided outside the sensor section (10) at intervals from each other, and the outer receiving electrodes (13, 13) are capable of detecting a hover operation by receiving an electric field radiated from each transmitting electrode (11) when a finger performs the hover operation without touching the operation surface (2 b). The receiving wiring sections (22, 22) electrically connected to the receiving electrodes (12) are arranged at positions not overlapping the outer receiving electrodes (13, 13) in the vertical direction.
Description
Technical Field
The present invention relates to a touch sensor, and more particularly, to a touch sensor capable of both touch operation and hover (river) operation.
Background
Conventionally, as such a touch sensor, for example, a touch sensor shown in patent document 1 is known.
Patent document 1 discloses a touch sensor including: a transmission electrode group including a plurality of transmission electrodes; a receiving electrode group including a plurality of receiving electrodes intersecting the transmitting electrode in a plan view; and a plurality of peripheral electrodes arranged around the transmitting electrode group and the receiving electrode group. Wiring portions for electrical connection to an external circuit are provided in each of the transmitting electrode and the receiving electrode.
Prior art literature
Patent literature
Patent document 1: japanese patent laid-open No. 2015-46085
Disclosure of Invention
Problems to be solved by the invention
In the touch sensor of patent document 1, each wiring portion extends to the external circuit in a state in which a part of each wiring portion intersects the peripheral electrode so as to overlap the peripheral electrode in the up-down direction. Therefore, the outer peripheral electrode is directly affected by the noise of the electric signal generated by the wiring portion when receiving the electric field emitted from the transmitting electrode. As a result, the electric field emitted from the transmitting electrode cannot be properly received by the outer peripheral electrode, and thus there is a possibility that the detection state of the hover operation is unstable.
The present invention has been made in view of the above-described points, and an object thereof is to stabilize the operation states of both the touch operation and the hover operation.
Solution for solving the problem
In order to achieve the above object, a touch sensor according to one embodiment of the present invention includes a sensor unit capable of detecting a touch operation performed by a detection object contacting an operation surface. The sensor section has: a plurality of transmitting electrodes radiating an electric field; and a plurality of receiving electrodes intersecting the respective transmitting electrodes and capable of detecting a touch operation by receiving an electric field radiated from the respective transmitting electrodes at the time of the touch operation. Wiring portions for electrical connection to an external circuit are provided in each of the transmitting electrode and the receiving electrode. A plurality of outer receiving electrodes are provided at intervals from each other outside the sensor section, the plurality of outer receiving electrodes being capable of detecting a hover operation by receiving an electric field radiated from each transmitting electrode when the detection object is hover-operated in a state of not contacting the operation surface. At least one of the transmitting electrode and the receiving electrode is disposed at a position not overlapping the plurality of outer receiving electrodes in the vertical direction.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the present invention, the outer receiving electrode is not affected by at least the noise of the electric signal generated by the wiring portion of one of the transmitting electrode and the receiving electrode, so that the electric field emitted from the transmitting electrode can be appropriately received, thereby stabilizing the detection state of the hover operation. Thus, in the present invention, the operation states of both the touch operation and the hover operation can be stabilized.
Drawings
Fig. 1 is an overall perspective view of a touch sensor according to a first embodiment of the present invention.
Fig. 2 is a plan view showing the structure of the sensor body.
Fig. 3 is a plan view showing the structure of the lower substrate.
Fig. 4 is a plan view showing the structure of the center base material.
Fig. 5 is a plan view showing the structure of the upper substrate.
Fig. 6 is a partial enlarged view showing an enlarged portion a of fig. 2.
Fig. 7 is a view corresponding to fig. 2 showing a structure of a sensor body according to a second embodiment.
Fig. 8 is a partial enlarged view showing the portion B of fig. 7 in an enlarged manner.
Fig. 9 is a view corresponding to fig. 2 showing a structure of a sensor body according to a third embodiment.
Fig. 10 is a partial enlarged view of fig. 9, showing an enlarged portion C.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following description of the embodiments is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
First embodiment
Fig. 1 shows an entire touch sensor 1 according to a first embodiment of the present invention. The touch sensor 1 is a sensor type input device capable of both touch operation and hover operation. The touch sensor 1 is used as an input device for various devices (for example, in-vehicle devices such as in-vehicle navigator, display devices of personal computers, mobile phones, mobile information terminals, portable game machines, copiers, ticket vending machines, automatic teller machines, and the like) in which a display device such as a liquid crystal display or an organic EL display is incorporated.
In the following description, the lid member 2 to be described below has an "operation surface" on the side that is contacted by a finger or the like of a user in response to a touch operation of the touch sensor 1, and a "back surface" on the side opposite to the operation surface. The positional relationship in the up-down direction of the touch sensor 1 is expressed by taking the operation surface side of the cover member 2 as the upper side and the side of the sensor body 4, which is described later, on which the lower base material 5 is disposed as the lower side. The X-axis direction shown in each figure is defined as a direction going from the left side to the right side of the touch sensor 1 shown in fig. 1, and the Y-axis direction is defined as a direction going from the rear side to the front side of the touch sensor 1. In addition, such a positional relationship is independent of the actual direction of the touch sensor 1 or the device in which the touch sensor 1 is embedded.
As shown in fig. 1, the touch sensor 1 includes a light-transmitting cover member 2. The cover member 2 includes a glass cover plate (cover glass) or a cover plate (cover lens) made of plastic. Specifically, the cover member 2 is formed in a rectangular plate shape and is stacked on the upper side of the sensor body 4 described later. A substantially frame-shaped window frame portion 2a is formed on the rear surface outer periphery of the cover member 2 by printing or the like in a dark color such as black, and a light-transmissive operation surface 2b is formed in a rectangular region surrounded by the window frame portion 2 a.
The touch sensor 1 includes a flexible wiring board 3. The flexible wiring board 3 is configured to have flexibility and not change its electrical characteristics even in a deformed state. A connection portion (not shown) electrically connected to each wiring portion described later is provided at the distal end portion of the flexible wiring board 3, and is attached to the sensor body 4 described later by an anisotropic conductive resin material, for example.
As shown in fig. 1 and 2, the touch sensor 1 includes a sensor body 4. Specifically, as shown in fig. 3 to 5, the sensor body 4 includes a lower substrate 5, a central substrate 6 stacked on the upper side of the lower substrate 5, and an upper substrate 7 stacked on the upper side of the central substrate 6. The lower substrate 5, the central substrate 6, and the upper substrate 7 are each made of a light-transmitting resin sheet such as polyethylene terephthalate, polyethersulfone, or polycarbonate, or formed of glass.
The sensor body 4 has a capacitance type sensor portion 10 capable of detecting a touch operation by a finger (detection object) that a user touches the operation surface 2b of the cover member 2. Specifically, as shown in fig. 2, the sensor unit 10 includes transmission electrodes 11, ··and reception electrodes 12, ·s.
Each of the transmitting electrodes 11 is formed of a transparent material (transparent conductive film) having light transmittance such as indium tin oxide or tin oxide, and each of the transmitting electrodes 11 is configured to radiate an electric field upward. As shown in fig. 2 and 3, each of the transmitting electrodes 11 is formed on the upper surface of the lower substrate 5 by a sputtering deposition method or the like, and extends in a substantially strip shape along the Y-axis direction. In addition, in the case of the optical fiber, transmitting electrodes 11, 11 the first and second electrodes are disposed at intervals in the X-axis direction.
The receiving electrodes 12 are formed of the same material as the transmitting electrodes 11, and intersect the transmitting electrodes 11 so as to be insulated from the transmitting electrodes 11. More specifically, the receiving electrodes 12 are arranged substantially orthogonal to each other with a space from the transmitting electrodes 11 in the up-down direction. As shown in fig. 2 and 4, each receiving electrode 12 is formed on the upper surface of the central base material 6 by a sputtering deposition method or the like, and extends in the X-axis direction in a substantially strip shape. In addition, in the case of the optical fiber, receiving electrodes 12, 12 the first and second electrodes are disposed at intervals in the Y-axis direction.
The receiving electrodes 12 are configured to be able to detect whether or not there is a touch operation on the operation surface 2b and an operation position at which the touch operation is performed by receiving an electric field radiated from the transmitting electrodes 11 at the time of the touch operation. Specifically, when the user's finger contacts the operation surface 2b, a part of the electric field emitted from each of the transmission electrodes 11 connected to the driving circuit (not shown) is absorbed by the finger, and the state of the electric field changes. The change is detected by a detection circuit (not shown) connected to the receiving electrodes 12, ··, and the control circuit (not shown) determines the position where the finger is in contact with the operation surface 2b based on the result of the detection.
As shown in fig. 2 and 5, a plurality of (four in the illustrated example) outer receiving electrodes 13, 13 are arranged at intervals on the outer side of the sensor portion 10. Each of the outer receiving electrodes 13 is formed of the same material as the transmitting electrode 11, and is formed on the upper surface of the upper substrate 7 by a sputtering deposition method or the like.
Outer receiving electrodes 13, 13 the sensor unit 10 is disposed so as to surround the front, rear, left, and right directions. Specifically, the outer receiving electrodes 13a and 13b located on the left and right sides of the sensor section 10 extend in a substantially strip shape along the longitudinal direction (Y-axis direction) of each transmitting electrode 11. The outer receiving electrodes 13c and 13d located in front of and behind the sensor section 10 extend in a substantially strip shape along the longitudinal direction (X-axis direction) of each receiving electrode 12.
Each of the outer receiving electrodes 13 is configured to be able to detect a hover operation by receiving an electric field radiated from each of the transmitting electrodes 11 when the user's finger performs the hover operation in a state of not contacting the operation surface 2b. Specifically, when the finger of the user approaches the operation surface 2b at a predetermined distance, a part of the electric field emitted from each of the transmission electrodes 11 connected to the driving circuit (not shown) is absorbed by the finger, and the electric field emitted from each of the transmission electrodes 11 changes. The change is detected by a detection circuit (not shown) connected to the outer receiving electrodes 13, ··, and the control circuit (not shown) determines the position of the finger approaching the operation surface 2b at a predetermined distance based on the result of the detection.
Next, as shown in fig. 2 and 3, a transmission wiring portion 21 (wiring portion) for electrically connecting to an external circuit (not shown) is provided to each transmission electrode 11. Each of the transmission wiring portions 21 is formed of, for example, silver, carbon, copper foil, or the like, and is formed on the upper surface of the lower substrate 5 by a sputtering deposition method or the like. The front parts of the transmission wiring parts 21, & gtare mounted on the rear parts of the transmission electrodes 11, and are arranged at intervals in the X-axis direction. In addition, in the case of the optical fiber, transmission wiring parts 21, 21 the respective rear portions are wound so as to extend toward the rear end portion of the sensor body 4 (lower base material 5) and gather at a substantially central position of the outer receiving electrode 13 located rearward of the sensor portion 10. That is, in the present embodiment, the rear portion of each transmission wiring portion 21 overlaps the outer receiving electrode 13d located at the rear of the sensor portion 10 in the up-down direction.
As shown in fig. 2 and 4, each receiving electrode 12 is provided with receiving wiring portions 22, 22 (wiring portions) for electrically connecting to an external circuit. Each of the receiving wiring portions 22 is formed of the same material as the transmitting wiring portion 21, and is formed on the upper surface of the central base material 6 by a sputtering deposition method or the like. The front parts of the receiving wiring parts 22, & gtare arranged on the right side and are mounted on the right end parts of the receiving electrodes 12, and are arranged at intervals in the Y-axis direction. The front parts of the receiving wiring parts 22, & gtare arranged on the left side, are mounted on the left end parts of the receiving electrodes 12, and are arranged at intervals in the Y-axis direction.
As shown in fig. 2 and 5, each of the outer receiving electrodes 13 is provided with an outer wiring portion 23 for electrical connection with an external circuit. Each of the outer wiring portions 23 is formed of the same material as the transmission wiring portion 21, and is formed on the upper surface of the upper substrate 7 by a sputtering deposition method or the like. The outer wiring portions 23 are configured to be attached to the outer receiving electrodes 13 at the front portions thereof, and extend toward the rear end portion of the sensor body 4 (upper base 7) at the rear portions thereof.
The above-described electrodes 11, 12, 13 and the wiring portions 21, 22, 23 may be formed by a conductive layer in which fine wires made of a conductive metal such as copper are formed in a mesh shape. In addition, the thin wire may be formed of a conductive resin.
Next, as a feature of the present invention, as shown in fig. 2, the receiving wiring portions 22, 22 are arranged at positions not overlapping the outer receiving electrodes 13, 13 in the up-down direction. In other words the first and second phase of the process, the receiving wiring portions 22, & gtare wound so as to avoid the positions of the outer receiving electrodes 13, & gtin a plan view.
As also shown in fig. 5, first gap portions 31, 31 for passing the receiving wiring portions 22, 22 to the outside of the sensor portion 10 are provided between the outer receiving electrodes 13, 13 adjacent to each other. Specifically, the first gap portion 31 on the left side is provided between the outer receiving electrode 13a located on the left side of the sensor portion 10 and the outer receiving electrode 13d located on the rear side of the sensor portion 10. The first gap 31 on the right side is provided between the outer receiving electrode 13b and the outer receiving electrode 13d located on the right side of the sensor unit 10 (see fig. 6).
As shown in the figure 2 of the drawings, the left receiving wiring parts 22, 22 are not connected to the outer receiving electrode 13a in the up-down direction 13d pass through the left first gap portion 31 and extend to the outside of the sensor portion 10. In particular, the method comprises the steps of, the left receiving wiring portions 22, & gtare extended to the rear end of the sensor body 4 (central base 6) at the rear portions thereof, and are extended to the transmitting wiring portion 21 the rear part of 21 is gathered and wound at a position separated to the left side.
On the other hand, in the other hand, the right receiving wiring parts 22, 22 are not connected to the outer receiving electrode 13b in the up-down direction 13d pass through the first gap 31 on the right side and extend outward of the sensor unit 10 so as to overlap with each other (see fig. 6). In particular, the method comprises the steps of, the right receiving wiring portions 22, & gtare extended to the rear end of the sensor body 4 (central base 6) at the rear portions thereof, and are extended to the transmitting wiring portion 21 the rear part of 21 is gathered and wound at a position separated to the right side.
In the touch sensor 1 according to the present embodiment, as described above, transmission wiring parts 21, 21 the rear portion of the sensor section 10 overlaps with the outer receiving electrode 13d located at the rear of the sensor section in the up-down direction. As shown in fig. 2 and 4, a shielding portion 24 for electrically shielding the transmission wiring portions 21, 21 and the outer receiving electrode 13d is provided at the overlapping position. The shield portion 24 is formed of, for example, a ground pattern (ground pattern) such as a metal layer, and is formed on the upper surface or the lower surface of the center base material 6 by a sputtering vapor deposition method or the like.
(effects of the first embodiment)
As described above, in the touch sensor 1, the receiving wiring portions 22, 22 (wiring portions) are arranged at positions not overlapping the outer receiving electrodes 13, 13 in the up-down direction. Therefore, the outer receiving electrodes 13 are not directly affected by the noise of the electric signal generated by the receiving wiring portions 22 when receiving the electric field radiated from the transmitting electrodes 11. As a result, the electric field radiated from the transmitting electrodes 11, & gtis properly received by the outer receiving electrodes 13, & gtand, so that the detection state of the hover operation is stable. In addition, since the detection state is stable, a high detection sensitivity for the hover operation can also be set. Thus, in the touch sensor 1 according to the first embodiment of the present invention, the operation states of both the touch operation and the hover operation can be stabilized.
Further, first gap portions 31, 31 for passing the receiving wiring portions 22, 22 to the outside of the sensor portion 10 are provided between the outer receiving electrodes 13, 13 adjacent to each other. Therefore, the outer receiving electrodes 13, & gtcan stabilize the detection state of the hover operation without being affected by the noise of the electric signal from each receiving wiring section 22, and can easily connect the receiving wiring portions 22, 22 the outer side of the sensor portion 10 is wound.
In addition, in the case of the optical fiber, the transmission wiring parts 21, & gtare provided at positions overlapping the outer receiving electrode 13d in the up-down direction so as to allow the transmission wiring parts 21 21 and a shielding portion 24 electrically shielded from the outer receiving electrode 13d. Therefore, even if the transmission wiring portions 21, & gtand the outer receiving electrode 13d are overlapped in the up-down direction, the transmission wiring portions 21, and the shielding portion 24 can be suppressed influence of electrical signal noise on the outer receiving electrode 13d.
Second embodiment
Fig. 7 and 8 show a touch sensor 1 according to a second embodiment of the present invention. In the present embodiment, in the case of the present embodiment, transmission wiring parts 21, 21 the arrangement state of the information is different from the above configuration state of the first embodiment. Other structures of the touch sensor 1 according to the present embodiment are the same as those of the touch sensor 1 according to the first embodiment. Therefore, in the following description, the same portions as those in fig. 1 to 6 are denoted by the same reference numerals, and detailed description thereof is omitted.
As shown in figure 7 of the drawings, a transmitting wiring portion 21, & gtand a right receiving wiring portion 22, 22 the first gap 31 on the right side extends to the outside of the sensor unit 10. Specifically, as shown in FIG. 8, transmission wiring parts 21, 21 winding is performed as follows: the front parts of the transmission wiring parts 21, & gtare extended in the X-axis direction from the rear end part of each receiving electrode 12 to the right end part of the outer receiving electrode 13d, and the transmission wiring part 21 21, & gtthe rear portions of the first and second spacers 31 extend in the direction opposite to the X-axis direction after passing through the first and second spacers. That is to say, transmission wiring parts 21, 21 the outer receiving electrode 13d is bypassed by passing through the first gap portion 31 on the right side. The rear parts of the transmission wiring parts 21, & gtare arranged between the rear parts of the reception wiring parts 22, & gton the right side and the rear parts of the reception wiring parts 22, & gton the left side.
(effects of the second embodiment)
As described above, in the present embodiment, the transmission wiring portions 21, ·and the reception wiring portions 22, ·are arranged at positions not overlapping the outer reception electrodes 13, ·in the up-down direction. Therefore, the outer receiving electrodes 13 are not directly affected by the noise of the electric signal generated by both the transmitting wiring sections 21 and the receiving wiring sections 22 when receiving the electric field radiated from the transmitting electrodes 11, ··. Accordingly, in the touch sensor 1 according to the present embodiment, the operation states of both the touch operation and the hover operation can be stabilized as in the first embodiment. Moreover, a high detection sensitivity for hover operation can also be set. In the present embodiment, the shielding portion 24 shown in the first embodiment is not required.
In addition, in the present embodiment, the present invention, a transmitting wiring portion 21, & gtand a receiving wiring portion 22, 22 the first gap portion 31 extends outward of the sensor portion 10. Therefore, the outer receiving electrodes 13, & gtcan stabilize the detection state of the hover operation without being affected by the noise of the electric signals from the transmitting electrodes 11 and the receiving wiring sections 22, the transmission wiring sections 21, & gtand the reception wiring sections 22, & gtcan be wound in a concentrated state to the outside of the sensor section 10.
Third embodiment
Fig. 9 and 10 show a touch sensor 1 according to a third embodiment of the present invention. In the present embodiment, in the case of the present embodiment, part of the outer receiving electrode 13 and the transmitting wiring parts 21, 21 the arrangement state of the first embodiment is different from that of the first embodiment. Other structures of the touch sensor 1 according to the present embodiment are the same as those of the touch sensor 1 according to the first embodiment. Therefore, in the following description, the same portions as those in fig. 1 to 6 are denoted by the same reference numerals, and detailed description thereof is omitted.
As shown in fig. 9 and 10, a second gap portion 32 is provided in one of the outer receiving electrodes 13 adjacent to the first gap portion 31 to intercept an intermediate portion of the outer receiving electrode 13. Specifically, the outer receiving electrodes 13d, 13d are disposed behind the sensor section 10 with a gap (second gap portion 32) therebetween. Furthermore, the processing unit is configured to, transmission wiring parts 21, 21 the respective rear portions pass through the second gap portion 32, extend toward the rear end portion of the sensor body 4 (lower base material 5), and are wound so as to gather at a substantially central position in the X-axis direction of the sensor body 4 (lower base material 5).
(effects of the third embodiment)
As described above, in the present embodiment, the transmission wiring portions 21, ··and the reception wiring portions 22, ·are arranged at positions not overlapping the outer reception electrodes 13, ·in the up-down direction. Therefore, the outer receiving electrodes 13 are not directly affected by the noise of the electric signal generated by both the transmitting wiring sections 21 and the receiving wiring sections 22 when receiving the electric field radiated from the transmitting electrodes 11, ··. Accordingly, in the touch sensor 1 according to the present embodiment, the operation states of both the touch operation and the hover operation can be stabilized as in the first embodiment. Moreover, a high detection sensitivity for hover operation can also be set. In the present embodiment, the shielding portion 24 is not required as in the second embodiment.
In addition, in the present embodiment, the present invention, the receiving wiring portions 22, & gtare extended so as to pass through the first gap portions 31, 31 and go to the outside of the sensor portion 10, and transmitting wiring portions 21, 21 the second gap portion 32 extends so as to pass through the sensor portion 10. Thus, the first and second substrates are bonded together, the transmission wiring parts 21, & gtand the reception wiring parts 22, 22 can be formed the first gap portions 31 and the second gap portion 32 are efficiently led outward of the sensor portion 10, respectively.
Other embodiments
In the touch sensor 1 according to the above embodiments, the lower substrate 5 and the central substrate 6 may be arranged in a reverse arrangement to the arrangement shown in the first to third embodiments. That is, the upper and lower positions of the lower substrate 5 and the center substrate 6 may be changed from each other. Specifically, the receiving electrodes 12, & gt and the receiving wiring portions 22, & gt are formed on the upper surface of the lower substrate 5, and the transmitting electrodes 11, & gt and the transmitting wiring portions 21, & gt are formed on the upper surface of the central substrate 6. In this way, the same operational effects as those of the touch sensor 1 according to the first and third embodiments can be obtained. In the touch sensor 1 according to the first embodiment, when the vertical positions of the lower substrate 5 and the central substrate 6 are exchanged with each other, no other base material exists between the upper base material 7 on which the outer receiving electrodes 13, ··and the central base material 6 on which the transmitting wiring portions 21, ·are formed. Therefore, instead of providing the shielding portion 24 on the center base material 6 as in the first embodiment, but requires transmission wiring portions 21, 21 between the upper substrate 7 and the central substrate 6 the shielding portion 24 is provided at a position overlapping the outer receiving electrode 13d in the vertical direction.
In the touch sensor 1 according to each of the above embodiments, the transmitting electrodes 11, ··and the receiving electrodes 12, ·may be replaced with an arrangement relationship opposite to that shown in the first to third embodiments. That is, the transmitting electrodes 11, & gtare arranged so as to extend in the X-axis direction and so as to be spaced apart in the Y-axis direction, on the other hand, in the other hand, the receiving electrodes 12, & gtare arranged so as to extend in the Y-axis direction and to be spaced apart from each other in the X-axis direction. In conjunction with this, a transmitting wiring portion 21, & gtand a receiving wiring portion 22, 22 the arrangement relationship is also opposite to the arrangement relationship shown in the first to third embodiments. In the case where such a configuration relationship is applied to the touch sensor 1 according to the first embodiment described above, transmission wiring parts 21, 21 the first gap portions 31, 31 pass through. In addition, in the case where the above-described arrangement relation is applied to the touch sensor 1 according to the above-described second embodiment, the transmission wiring parts 21, & gtarranged on the left pass through the first gap part 31 on the left, on the other hand, in the other hand, receiving wiring parts 22, & gtand a transmitting wiring part 21 arranged on the right side 21, ··· pass through the first gap portion 31 on the right side. In addition, when the above-described arrangement relationship is applied to the touch sensor 1 according to the third embodiment, the transmission wiring parts 21, & gtpass through the first gap parts 31, on the other hand, in the other hand, the receiving wiring portions 22, 22, ·····pass through the second gap portion 32. In this way, the same operational effects as those of the touch sensor 1 according to the first to third embodiments can be obtained.
In the above embodiments, the sensor body 4 is configured by using three substrates (the lower substrate 5, the center substrate 6, and the upper substrate 7), but the present invention is not limited to this configuration. For example, the sensor body 4 may have only two substrates (the lower substrate 5 and the upper substrate 7) from which the central substrate 6 is removed. Specifically, the transmission electrodes 11, & gtand the transmission wiring sections 21, & gtmay be formed on the upper surface of the lower substrate 5, the receiving electrodes 12, & gtand the receiving wiring portions 22, & gtand the outer receiving electrodes 13, & gtand the outer wiring portions 23, & gtare formed on the upper surface of the upper substrate 7. That is, the receiving electrodes 12, ··and the outer receiving electrodes 13, ·are formed on the same plane. In this way, the number of substrates constituting the touch sensor 1 can be reduced, and the thickness of the touch sensor 1 can be reduced.
Here, when the central base material 6 is removed from the sensor body 4 according to the first embodiment, an insulating portion (not shown) may be formed on the upper surface of the upper base material 7 and arranged at a position between the upper and lower sides of a position where the rear portion of the left receiving wiring portion 22 overlaps the outer wiring portion 23 of the outer receiving electrode 13d. Or alternatively, the process may be performed, the outer wiring portion 23 of the outer receiving electrode 13d may be disposed on the left side of the transmission wiring portion 21 on the upper surface of the upper substrate 7 a position between the rear part of 21, & gtand the left and right of the rear part of the receiving wiring parts 22, & gtis disclosed. As a result, in the touch sensor 1 according to the first embodiment, the central base material 6 can be removed. In the case where the center substrate 6 is removed from the sensor body 4 according to the first embodiment, the shielding portion 24 may be formed on the upper substrate 7. For example, the number of the cells to be processed, the shielding portion 24 is formed on the lower surface of the upper substrate 7 and arranged in the transmission wiring portion 21 21 and the rear portion of the electrode overlaps the outer receiving electrode 13d.
In particular, the second and third embodiments may be configured such that the sensor body 4 has only one substrate and each electrode and each wiring portion are formed on the upper surface of the substrate. This can reduce the number of substrates constituting the sensor body 4 more, and can reduce the thickness of the sensor body 4.
The embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the invention.
Industrial applicability
The present invention is industrially applicable as a touch sensor type input device capable of performing both touch operation and hover operation.
Description of the reference numerals
1: a touch sensor; 2: a cover member; 2b: an operation surface; 3: a flexible wiring board; 4: a sensor body; 5: a lower substrate; 6: a central substrate; 7: a base material is arranged on the upper substrate; 10: a sensor section; 11: a transmitting electrode; 12: a receiving electrode; 13: an outer receiving electrode; 21: a transmission wiring section; 22: a receiving wiring section; 23: an outer wiring section; 24: a shielding part; 31: a first gap portion; 32: and a second gap portion.
Claims (2)
1. A touch sensor includes a sensor section capable of detecting a touch operation performed by a detection object contacting an operation surface,
the sensor section includes:
a plurality of transmitting electrodes for radiating an electric field; and
a plurality of receiving electrodes intersecting each of the transmitting electrodes and capable of detecting the touch operation by receiving an electric field radiated from each of the transmitting electrodes at the time of the touch operation,
wherein the plurality of transmitting electrodes extend in a first direction, the first direction being a direction from a rear side to a front side of the touch sensor,
the plurality of receiving electrodes extend in a second direction, the second direction being a direction from a left side to a right side of the touch sensor,
a transmission wiring portion for electrically connecting to an external circuit is provided in each of the transmission electrodes,
receiving wiring portions for electrical connection with an external circuit are provided at both end portions of each of the receiving electrodes,
a plurality of outer receiving electrodes provided at intervals from each other outside the sensor section, the plurality of outer receiving electrodes being capable of detecting a hover operation by receiving an electric field radiated from each of the transmitting electrodes when the detection object performs the hover operation in a state of not contacting the operation surface,
the transmission wiring portion and the reception wiring portion are arranged at positions not overlapping the plurality of outer reception electrodes in the up-down direction,
the plurality of outer receiving electrodes are composed of a first outer receiving electrode, a second outer receiving electrode, a third outer receiving electrode and a fourth outer receiving electrode,
wherein the first outer receiving electrode is located on the left side of the sensor section in a plan view and extends in the first direction,
the second outer-side receiving electrode is located on the right side of the sensor section in a plan view and extends in the first direction,
the third outer receiving electrode is located on the front side of the sensor section in a plan view and extends in the second direction,
the fourth outer-side receiving electrode is located on the rear side of the sensor section in a plan view and extends in the second direction,
first gap portions are provided between the first outer receiving electrode and the fourth outer receiving electrode and between the second outer receiving electrode and the fourth outer receiving electrode, respectively, in a plan view,
the receiving wiring portion located on the left side of the sensor portion extends from the end portion on the left side of the receiving electrode through the first gap portion located between the first outer receiving electrode and the fourth outer receiving electrode to the outside of the sensor portion,
the receiving wiring portion located on the right side of the sensor portion extends from an end portion on the right side of the receiving electrode through the first gap portion located between the second outer-side receiving electrode and the fourth outer-side receiving electrode to the outside of the sensor portion,
a second gap portion is provided in the fourth outer-side receiving electrode to intercept an intermediate portion of the fourth outer-side receiving electrode,
the transmission wiring portion extends from an end portion on the rear side of the transmission electrode to the outside of the sensor portion through the second gap portion.
2. The touch sensor of claim 1, wherein the touch sensor is configured to detect a touch,
the device is provided with: a lower substrate, on the upper surface of which the transmitting electrode is formed; and an upper substrate which is laminated on the upper side of the lower substrate, and both the receiving electrode and the outer receiving electrode are formed on the upper surface of the upper substrate.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-080808 | 2017-04-14 | ||
| JP2017080808 | 2017-04-14 | ||
| PCT/JP2018/006955 WO2018190008A1 (en) | 2017-04-14 | 2018-02-26 | Touch sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110506251A CN110506251A (en) | 2019-11-26 |
| CN110506251B true CN110506251B (en) | 2023-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880024960.8A Active CN110506251B (en) | 2017-04-14 | 2018-02-26 | touch sensor |
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| Country | Link |
|---|---|
| JP (1) | JP7022941B2 (en) |
| CN (1) | CN110506251B (en) |
| WO (1) | WO2018190008A1 (en) |
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| US10649488B2 (en) * | 2014-08-20 | 2020-05-12 | Microchip Technology Germany Gmbh | Electrode arrangement for gesture detection and tracking |
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2018
- 2018-02-26 WO PCT/JP2018/006955 patent/WO2018190008A1/en active Application Filing
- 2018-02-26 CN CN201880024960.8A patent/CN110506251B/en active Active
- 2018-02-26 JP JP2019512367A patent/JP7022941B2/en active Active
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| CN102804114A (en) * | 2009-06-24 | 2012-11-28 | 艾登特科技股份公司 | Electrode arrangement for display device |
| CN104067206A (en) * | 2011-12-09 | 2014-09-24 | 微晶片科技德国第二公司 | Electronic device with a user interface that has more than two degrees of freedom, the user interface comprising a touch-sensitive surface and contact-free detection means |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2018190008A1 (en) | 2018-10-18 |
| CN110506251A (en) | 2019-11-26 |
| JPWO2018190008A1 (en) | 2020-02-20 |
| JP7022941B2 (en) | 2022-02-21 |
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