WO2015147099A1 - タッチセンサ用電極、タッチパネル、および、表示装置 - Google Patents
タッチセンサ用電極、タッチパネル、および、表示装置 Download PDFInfo
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- WO2015147099A1 WO2015147099A1 PCT/JP2015/059238 JP2015059238W WO2015147099A1 WO 2015147099 A1 WO2015147099 A1 WO 2015147099A1 JP 2015059238 W JP2015059238 W JP 2015059238W WO 2015147099 A1 WO2015147099 A1 WO 2015147099A1
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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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
Definitions
- the technology of the present disclosure relates to a touch sensor electrode including a plurality of electrodes arranged in one direction, a touch panel including a touch sensor electrode, and a display device.
- the touch sensor included in the display device includes a drive electrode and a sensing electrode, which are examples of touch sensor electrodes, and the capacitance between the drive electrode and the sensing electrode indicates that a finger or the like is in contact with the operation surface of the display device. Detect as change. Since the image formed by the display panel of the display device is output to the operation surface through the drive electrode and the sensing electrode, the drive electrode and the sensing electrode have, for example, a large number of linear shapes arranged at intervals from each other. It is constituted by a set of electrode wires. (For example, refer to Patent Document 1.)
- the capacitance between the drive electrode and the sensing electrode is measured by a peripheral circuit connected to the touch sensor electrode. If the initial value of the capacitance between the electrodes is too large, a small change in capacitance due to contact between the operation surface and the finger is treated as a measurement error in the peripheral circuit. On the other hand, if the initial value of the capacitance between the electrodes is too small, noise in the peripheral circuit is handled as contact between the operation surface and the finger. Therefore, the initial value of the capacitance between the electrodes needs to be in an optimum range suitable for the change in capacitance due to contact.
- the initial value of the capacitance suitable for the change in capacitance due to contact may differ depending on the specifications of the peripheral circuit connected to the touch sensor electrode.
- the optimal range of an electrostatic capacitance changes, in the above-mentioned electrode for touch sensors, change of the width of an electrode line, the number of electrode lines, etc. is forced. Therefore, the above-described touch sensor electrode is desired to have a configuration capable of reducing structural changes with respect to different optimum capacitance ranges.
- An object of the technology of the present disclosure is to provide an electrode for a touch sensor, a touch panel, and a display device that can easily include an initial value of capacitance within a range of values suitable for a change in capacitance due to contact.
- One aspect of the electrode for a touch sensor is a first electrode layer having a plurality of first strip electrodes arranged at intervals along the first arrangement direction, and the plurality of first strip electrodes Each includes a first pad and a first line group including a plurality of first electrode lines, and the plurality of first pads are arranged at intervals along the first arrangement direction.
- the first electrode line has a shape extending toward the corresponding first pad, and a plurality of the first electrode layers are arranged at intervals along a second arrangement direction orthogonal to the first arrangement direction.
- a second electrode layer having a second strip electrode, wherein each of the plurality of second strip electrodes includes a second pad and a second line group including a plurality of second electrode lines; Two pads are arranged at intervals along the second arrangement direction, and the second electrode lines of each second line group are Having shape extending toward the second pad to respond comprises a second electrode layer, a transparent dielectric substrate located between the first electrode layer and the second electrode layer. In a plan view facing the transparent dielectric substrate, a region where the one first line group and one second line group intersect three-dimensionally is one cell, and the cell includes a plurality of the first line groups.
- Each of the one strip-shaped electrodes is arranged along the second array direction, and each of the plurality of second strip-shaped electrodes is arranged along the first array direction, and each of the first strip-shaped electrodes has the first pad.
- the cell closest to the first cell is a first closest cell, and the first line group includes a first non-connection line not connected to the first pad and a first connection line connected to the first pad. Included in the first closest cell.
- One aspect of the touch panel in the technology of the present disclosure includes a plurality of first strip electrodes, a plurality of second strip electrodes, and a transparent dielectric substrate sandwiched between the first strip electrodes and the second strip electrodes.
- the touch sensor electrode is the touch sensor electrode.
- One aspect of the display device in the technology of the present disclosure includes: a display panel that displays information; a drive circuit that drives a touch panel; and the touch panel that transmits the information displayed on the display panel.
- the touch panel includes: a display panel that displays information; a drive circuit that drives a touch panel; and the touch panel that transmits the information displayed on the display panel.
- the first band-like shape is formed as compared with the configuration in which all of the first electrode lines are connection lines.
- the initial value of the capacitance in each of the plurality of cells arranged on the electrode is reduced. Then, by changing the design so that the number of non-connected lines decreases as the number of connected lines increases, or as the number of non-connected lines increases as the number of connected lines decreases, It is possible to adjust the initial value to an optimum range. Therefore, it is possible to reduce structural changes that force changes in the width of the electrode lines and the number of electrode lines with respect to the optimum ranges of different capacitances.
- the first electrode layer includes a plurality of first strip electrodes arranged at intervals along the first arrangement direction, Each includes a first pad, a group of first main electrode lines forming an opposing angle smaller than 90 ° with the first pad, and the plurality of first main electrodes perpendicular to the first main electrode line.
- a plurality of second sub-bands arranged in a row along a second arrangement direction perpendicular to the first arrangement direction, the first electrode layer including a group of a plurality of first sub-electrode lines connecting the electrode lines
- Each of the plurality of second strip electrodes includes a second pad and a plurality of second main electrode lines forming an opposing angle smaller than 90 ° with the second pad.
- a plurality of second main electrode lines that are orthogonal to the second main electrode lines and connect the plurality of second main electrode lines to each other.
- a second dielectric layer including a group of two sub-electrode lines; and a transparent dielectric substrate positioned between the first electrode layer and the second electrode layer.
- a cell is arranged along the second arrangement direction in each of the plurality of first strip electrodes, and is arranged along the first arrangement direction in each of the plurality of second strip electrodes.
- the group of the first main electrode lines included in each includes a first unconnected line that is not connected to the first pad.
- a group of first main electrode lines included in each cell includes a first non-connection line, so that all of the first main electrode lines are first non-connected.
- the initial value of capacitance in each of the plurality of cells is small. Then, it is possible to adjust the initial value of the capacitance to an optimum range by changing the design so that the number of non-connection lines decreases or by changing the design so that the number of non-connection lines increases. Therefore, it is possible to reduce structural changes that force changes in the width of the electrode lines and the number of electrode lines with respect to the optimum ranges of different capacitances.
- Display device The configuration of the display device will be described with reference to FIG. In FIG. 1, the drive electrode and the sensing electrode are exaggerated for convenience of describing the configuration of the drive electrode formed on the drive surface and the sensing electrode formed on the sensing surface.
- the display device is a laminated body in which a display panel 10 that is a liquid crystal panel and a touch panel 20 are bonded together by a single transparent adhesive layer, and includes a drive circuit that drives the touch panel 20. .
- a display surface 10S having a rectangular shape is partitioned on the surface of the display panel 10, and information such as an image based on image data from the outside is displayed on the display surface 10S.
- the transparent adhesive layer may be omitted as long as the relative position between the display panel 10 and the touch panel 20 is fixed by another configuration such as a housing.
- the touch panel 20 is a capacitive touch panel, and is a laminated body in which a touch sensor electrode 21 and a cover layer 22 are bonded together by a transparent adhesive layer 23.
- the touch panel 20 transmits information displayed on the display panel 10.
- the cover layer 22 is formed of a glass substrate, a resin film, or the like, and the surface of the cover layer 22 opposite to the transparent adhesive layer 23 functions as the operation surface 20S of the touch panel 20.
- the transparent adhesive layer 23 has a light transmission property that transmits an image displayed on the display surface 10 ⁇ / b> S, and, for example, a polyether adhesive or an acrylic adhesive is used as a material for forming the transparent adhesive layer 23.
- the transparent substrate 31 included in the touch sensor electrode 21 is superimposed on the entire display surface 10S formed on the display panel 10 and transmits an image formed on the display surface 10S.
- the transparent substrate 31 may be composed of a base material such as a transparent glass substrate or a transparent resin film, for example, and may have a single-layer structure composed of one base material, or two or more base materials may be stacked. It may have a multilayer structure.
- the transparent substrate 31 is an example of a first base material.
- the surface of the transparent substrate 31 opposite to the display panel 10 is a drive surface 31S.
- a plurality of pads 31P are arranged at intervals along the first arrangement direction D1, which is one direction
- a plurality of electrode lines 31L are arranged at intervals along the first arrangement direction D1.
- Each of the plurality of electrode lines 31L has a polygonal line shape extending toward the pad 31P along the second arrangement direction D2 orthogonal to the first arrangement direction D1.
- the drive surface 31S is an example of the front surface
- the surface opposite to the drive surface 31S is an example of the back surface.
- Each of the plurality of electrode lines 31L is associated with one pad 31P by nine in order from the electrode line 31L located at one of the two ends in the first arrangement direction D1.
- Each of the nine electrode lines 31L associated with one pad 31P has two end portions in the second arrangement direction D2, and each electrode line 31L is associated with an end portion close to the pad 31P. It is connected to the pad 31P or close to it with a gap.
- the pad 31P is an example of a first pad, and the nine electrode lines 31L for each first pad are an example of a first line group.
- One pad 31P and nine electrode lines 31L for each pad 31P constitute one drive electrode 31DP that is an example of a first strip electrode, and the plurality of drive electrodes 31DP are arranged in the first arrangement direction D1. Are lined up at intervals.
- the plurality of drive electrodes 31DP and the transparent substrate 31 constitute a first electrode layer.
- Each of the plurality of electrode lines 31L includes a metal film such as copper or aluminum, a metal oxide film such as zinc oxide, and indium such as indium tin oxide and indium gallium zinc oxide, tin, gallium, and zinc.
- a composite oxide film containing a metal oxide is used.
- a conductive film such as a silver nanowire, a conductive polymer film, and a graphene film is also used for each of the plurality of electrode lines 31L.
- Each of the drive electrodes 31DP is individually connected to the selection circuit 34, and is selected by the selection circuit 34 when the selection circuit 34 receives a drive signal supplied to the drive electrode 31DP.
- the drive surface 31S, the plurality of electrode lines 31L, and the plurality of pads 31P are bonded to the transparent dielectric substrate 33 by one transparent adhesive layer 32.
- the transparent adhesive layer 32 has a light transmission property that transmits an image displayed on the display surface 10S, and includes the drive surface 31S, the plurality of electrode lines 31L, the plurality of pads 31P, and the transparent dielectric substrate 33.
- Glue for example, a polyether adhesive or an acrylic adhesive is used as a material for forming the transparent adhesive layer 32.
- a plurality of electrode lines 31L and a plurality of pads 31P are formed on the back surface of the transparent adhesive layer 32.
- the transparent dielectric substrate 33 may be formed of a base material such as a transparent resin film such as polyethylene terephthalate or a transparent glass substrate, for example, and may have a single layer structure composed of one base material. You may have a multilayer structure with which the above base material was piled up.
- the transparent dielectric substrate 33 has a light transmissive property for transmitting an image displayed on the display surface 10S and a relative dielectric constant suitable for detecting a capacitance between the electrodes.
- the transparent dielectric substrate 33 is an example of a second base material.
- the surface of the transparent dielectric substrate 33 opposite to the transparent adhesive layer 32 is a sensing surface 33S.
- a plurality of pads 33P are arranged at intervals along the second arrangement direction D2
- a plurality of electrode lines 33L are arranged at intervals along the second arrangement direction D2.
- Each of the plurality of electrode lines 33L has a polygonal line shape extending toward the pad 33P along the first arrangement direction D1.
- the sensing surface 33S is an example of the surface
- the surface opposite to the sensing surface 33S is an example of the back surface.
- Each of the plurality of electrode lines 33L is associated with one pad 33P in order of nine from the electrode line 33L located at one of the two ends in the second arrangement direction D2.
- Each of the nine electrode lines 33L associated with one pad 33P has two end portions in the first arrangement direction D1, and each electrode line 31L is associated with an end portion close to the pad 33P. It is connected to the pad 33P or close to it with a gap.
- the pad 33P is an example of a second pad, and the nine electrode lines 33L for each second pad are an example of a second line group.
- One pad 33P and nine electrode lines 33L for each pad 33P constitute one sensing electrode 33SP which is an example of a second strip electrode, and the plurality of sensing electrodes 33SP are arranged in the second arrangement direction D2. Are lined up at intervals.
- the plurality of sensing electrodes 33SP form a second electrode layer.
- Each of the plurality of electrode lines 33L has a metal film such as copper or aluminum, a metal oxide film such as zinc oxide, and indium tin oxide or indium oxide, similar to the electrode line 31L constituting the drive electrode 31DP described above.
- a composite oxide film containing indium such as gallium zinc, tin, gallium, and a metal oxide such as zinc is used.
- a conductive film such as a silver nanowire, a conductive polymer film, and a graphene film is also used.
- Each of the sensing electrodes 33SP is individually connected to the detection circuit 35, and the voltage for each sensing electrode 33SP is detected by the detection circuit 35.
- the touch sensor electrode 21, the selection circuit 34, and the detection circuit 35 are examples of a touch sensor.
- the sensing surface 33S, the plurality of electrode wires 33L, and the plurality of pads 33P are bonded to the cover layer 22 by the transparent adhesive layer 23 described above. That is, as shown in FIG. 2, in the touch panel 20, the transparent substrate 31, the drive electrode 31DP, the transparent adhesive layer 32, the transparent dielectric substrate 33, the sensing electrode 33SP, the transparent adhesive layer 23, and the cover layer 22 are laminated in this order. Of these, the transparent substrate 31 is located closest to the display panel 10.
- the transparent dielectric substrate 33 is located between the first electrode layer composed of the transparent substrate 31 and the drive electrode 31DP and the second electrode layer composed of the sensing electrode 33SP. That is, the transparent dielectric substrate 33 is sandwiched between the plurality of drive electrodes 31DP and the plurality of sensing electrodes 33SP.
- the transparent adhesive layer 32 is located between the drive electrode 31DP and the transparent dielectric substrate 33 while covering the periphery of each electrode line 31L constituting the drive electrode 31DP and filling between adjacent electrode lines 31L. ing.
- the transparent adhesive layer 23 is positioned between the sensing electrode 33SP and the cover layer 22 while covering the periphery of each electrode line 33L constituting the sensing electrode 33SP and filling between adjacent electrode lines 33L. .
- at least one of the transparent adhesive layer 23 and the transparent substrate 31 may be omitted.
- a plurality of constituent elements constituting the display panel 10 are arranged in the following order from the constituent elements far from the touch panel 20. That is, the lower polarizing plate 11, the thin film transistor (hereinafter, TFT) substrate 12, the TFT layer 13, the liquid crystal layer 14, the color filter layer 15, the color filter substrate 16, and the upper polarizing plate 17 are arranged in order from the components far from the touch panel 20. positioned.
- the pixel electrodes constituting the sub-pixels are located in a matrix.
- the black matrix defines a plurality of regions having a rectangular shape facing each of the sub-pixels, and white light is red, green, and blue in each region defined by the black matrix. A colored layer that changes to light of any color is located.
- the display panel 10 does not have to be a liquid crystal panel, and may be, for example, an organic EL panel.
- the plurality of electrode lines 31L and the plurality of pads 31P may be simultaneously formed by etching one thin film formed on the drive surface 31S through a mask.
- the plurality of electrode lines 31L and the plurality of pads 31P may be formed of different materials by different processes.
- the plurality of electrode lines 31L and the plurality of pads 31P are formed on another base material different from the transparent substrate 31, and the plurality of electrode lines 31L and the plurality of pads 31P are transparent from the other base materials. You may form by affixing on the board
- the plurality of electrode lines 33L and the plurality of pads 33P may be simultaneously formed by etching one thin film formed on the sensing surface 33S through a mask.
- the plurality of electrode lines 33L and the plurality of pads 33P may be formed of different materials by different processes.
- the plurality of electrode lines 33L and the plurality of pads 33P are formed on another base material different from the transparent dielectric substrate 33, and the plurality of electrode lines 33L and the plurality of pads 33P are formed on the other base material. May be formed by being attached to the transparent dielectric substrate 33.
- the surface of the cover layer 22 that faces the transparent dielectric substrate 33 is the sensing surface 33S, and patterning of one thin film formed on the sensing surface 33S is performed.
- the pad 33P and the electrode line 33L may be formed.
- a method in which the touch sensor electrode 21 and the cover layer 22 are bonded together by the transparent adhesive layer 23 may be employed.
- the manufacturing method may be adopted. That is, a thin film layer made of a conductive metal such as copper is formed directly or via a base layer on the cover layer 22 such as a resin film, and a resist having a sensing electrode pattern shape on the thin film layer Form a layer. Next, the thin film layer is processed into a plurality of sensing electrodes 33SP by a wet etching method using ferric chloride or the like to obtain a first film.
- a thin film layer formed on another resin film is processed into a plurality of drive electrodes 31DP to obtain a second film. Then, the first film and the second film are attached to the transparent dielectric substrate 33 with the transparent adhesive layer so that the first film and the second film sandwich the transparent dielectric substrate 33.
- the touch panel 20 includes a selection circuit 34, a detection circuit 35, and a control unit 36.
- the selection circuit 34 can be connected to the plurality of drive electrodes 31DP, and the detection circuit 35 can be connected to the plurality of sensing electrodes 33SP.
- the control unit 36 is connected to the selection circuit 34 and the detection circuit 35.
- the control unit 36 generates and outputs a start timing signal for causing the selection circuit 34 to start generating a drive signal for each drive electrode 31DP.
- the control unit 36 generates and outputs a scan timing signal for causing the selection circuit 34 to sequentially scan the target to which the drive signal is supplied from the first drive electrode 31DP toward the nth drive electrode 31DP.
- control unit 36 generates and outputs a start timing signal for causing the detection circuit 35 to start detecting the current flowing through each sensing electrode 33SP.
- the control unit 36 generates and outputs a scanning timing signal for causing the detection circuit 35 to sequentially scan the detection target from the first sensing electrode 33SP toward the nth sensing electrode 33SP.
- the selection circuit 34 starts generating a drive signal based on the start timing signal output from the control unit 36, and sets the output destination of the drive signal to the first drive electrode based on the scanning timing signal output from the control unit 36. Scanning from 31DP1 toward the nth drive electrode 31DPn.
- the detection circuit 35 includes a signal acquisition unit 35a and a signal processing unit 35b. Based on the start timing signal output from the control unit 36, the signal acquisition unit 35a starts acquiring a current signal that is an analog signal generated in each sensing electrode 33SP. Then, the signal acquisition unit 35a scans the current signal acquisition source from the first sensing electrode 33SP1 to the nth sensing electrode 33SPn based on the scanning timing signal output from the control unit 36.
- the signal processing unit 35b processes each current signal acquired by the signal acquisition unit 35a, generates a voltage signal that is a digital value, and outputs the generated voltage signal to the control unit 36.
- the selection circuit 34 and the detection circuit 35 generate the voltage signal from the current signal that changes in accordance with the change in the capacitance, thereby changing the capacitance between the drive electrode 31DP and the sensing electrode 33SP. Is measuring.
- the selection circuit 34 and the detection circuit 35 are examples of peripheral circuits.
- the control unit 36 detects a position touched by the user on the touch panel 20 based on the voltage signal output from the signal processing unit 35b.
- the touch panel 20 is not limited to the above-described mutual capacitive touch panel 20, and may be a self capacitive touch panel.
- FIG. 4 is a plan view showing a planar structure of the drive electrode 31DP.
- the line width of the electrode line 31L is exaggerated for convenience of explaining the arrangement of the electrode line 31L.
- one drive electrode 31DP includes nine electrode lines 31L formed in a polygonal line shape extending along the second arrangement direction D2, and is a strip electrode extending along the second arrangement direction D2. is there.
- the plurality of drive electrodes 31DP are arranged at intervals along the first arrangement direction D1.
- the drive electrode line 41 connected to the pad 31P in order from one of the two ends of the drive electrode 31DP in the first arrangement direction D1 Drive non-connection lines 42 that are not connected to the pads 31P are alternately arranged.
- five electrode lines 31L are drive electrode lines 41 which are an example of first connection lines, and four electrodes
- the line 31L is a drive non-connection line 42 which is an example of a first non-connection line.
- Each of the non-drive connection lines 42 faces the pads 31P with a predetermined interval in the second arrangement direction D2.
- Each gap between the end of each non-drive connection line 42 close to the pad 31P and the pad 31P is a pad gap portion 43 located between each electrode line 31L and the pad 31P.
- Each pad gap 43 is located outside the display surface 10S. Inside the display surface 10S, the drive electrode line 41 and the drive non-connection line 42 have the same structure, and are different from each other only in the position in the first arrangement direction D1.
- the pad gap 43 is an example of a first gap.
- the electrode line 31L located at each of the two ends in the first arrangement direction D1 is the drive electrode line 41 connected to the pad 31P.
- a part of the electrode lines 31L other than the electrode line 31L located at each of the two ends in the first arrangement direction D1 is a drive non-connection line 42 that faces the pad 31P through the pad gap 43.
- the plurality of non-drive connection lines 42 are regularly arranged in the first arrangement direction D1 among the plurality of drive electrodes 31DP. That is, in the portion where the two pads 31P are adjacent to each other in the first arrangement direction D1, the two drive non-connection lines 42 sandwich the two drive electrode lines 41 connected to the pads 31P different from each other. On the other hand, two drive non-connection lines 42 sandwich one drive electrode line 41 at a portion along one pad 31P in the first arrangement direction D1.
- Each of the plurality of pad gaps 43 in each drive electrode 31DP may be formed simultaneously with the plurality of electrode lines 31L.
- a sputtering method using a mask having openings corresponding to the plurality of electrode lines 31L and the plurality of pad gaps 43 is performed. Used.
- the number and position of the pad gaps 43 can be changed by changing the mask setting corresponding to the connection part between the electrode line 31L and the pad 31P. Therefore, even if the optimum capacitance range of the touch sensor electrode 21 changes, the electrode line 31L is not forced to change in structure such as width, position, and number.
- each of the plurality of pad gaps 43 in each drive electrode 31DP may be formed separately from the plurality of electrode lines 31L.
- the plurality of electrode lines 31L and the plurality of pad gaps 43 are separately formed, first, the plurality of electrode lines 31L are formed by various methods, and then a part of the plurality of electrode lines 31L is etched or The pad gap portion 43 is formed by cutting by the laser ablation method. The number and position of the pad gaps 43 can be changed by changing the setting of the cutting position. Therefore, even if the optimum capacitance range of the touch sensor electrode 21 changes, the electrode line 31L is not forced to change in structure such as width, position, and number.
- FIG. 5 is a plan view of the drive electrode 31DP and the sensing electrode 33SP as seen from the direction in which the drive electrode 31DP and the sensing electrode 33SP are stacked.
- the line width of the electrode line 31 ⁇ / b> L and the line width of the electrode line 33 ⁇ / b> L are exaggerated for convenience of describing the arrangement of the drive electrode 31 ⁇ / b> DP and the sensing electrode 33 ⁇ / b> SP.
- one sensing electrode 33SP is composed of nine electrode lines 33L formed in a polygonal line shape extending along the first arrangement direction D1, and has a belt shape extending along the first arrangement direction D1. Electrode. Each of the plurality of sensing electrodes 33SP is arranged at intervals along the second arrangement direction D2, and intersects each of the plurality of drive electrodes 31DP when viewed in a plan view facing the transparent dielectric substrate 33. Placed in position.
- the sensing electrode line 51 connected to the pad 33P in order from one of the two ends of the sensing electrode 33SP in the second array direction D2 Sensing non-connection lines 52 that are not connected to the pads 33P are alternately arranged.
- the nine electrode lines 33L facing in the first arrangement direction D1 with respect to one pad 33P five electrode lines 33L are sensing electrode lines 51 as an example of the second connection line, and four electrodes
- the line 33L is a sensing non-connection line 52 which is an example of a second non-connection line.
- Each sensing non-connection line 52 faces the pad 33P with a predetermined interval in the first arrangement direction D1.
- Each gap between the end close to the pad 33P in each non-sensing connection line 52 and the pad 33P is a pad gap portion 53 located between each electrode line 33L and the pad 33P.
- Each pad gap 53 is located outside the display surface 10S, and is located in a portion that does not overlap the pad gap 43 in the plurality of drive electrodes 31DP.
- the sensing electrode line 51 and the non-sensing connection line 52 have the same structure, and only the positions in the second arrangement direction D2 are different from each other.
- the pad gap 53 is an example of a second gap.
- each sensing non-connection line 52 is not connected to the pad 33P, it is not connected to the detection circuit 35 that detects the voltage of the sensing electrode 33SP. Therefore, the voltage of the sensing non-connection line 52 is not detected by the detection circuit 35.
- the electrode line 33L positioned at each of the two ends in the second arrangement direction D2 is the sensing electrode line 51 connected to the pad 33P.
- a part of the electrode lines 33L other than the electrode line 33 positioned at each of the two ends in the second arrangement direction D2 is a sensing non-connection line 52 facing the pad 33P through the pad gap portion 53.
- the plurality of sensing non-connection lines 52 are regularly arranged in the second arrangement direction D2 among the plurality of sensing electrodes 33SP. That is, in the part where the two pads 33P are adjacent in the second arrangement direction D2, the two sensing non-connection lines 52 sandwich the two sensing electrode lines 51 connected to the pads 33P different from each other. On the other hand, two sensing non-connection lines 52 sandwich one sensing electrode line 51 at a portion along one pad 33P in the second arrangement direction D2.
- Each of the plurality of pad gaps 53 in each sensing electrode 33SP may be formed simultaneously with the plurality of electrode lines 33L.
- a sputtering method using a mask having openings corresponding to the plurality of electrode lines 33L and the plurality of pad gaps 53 is performed. Used.
- the number and position of the pad gaps 53 can be changed by changing the mask setting corresponding to the connection portion between the electrode line 33L and the pad 33P. Therefore, even if the optimum capacitance range of the touch sensor electrode 21 changes, the electrode line 33L is not forced to be structurally changed in terms of width, position, number, and the like.
- each of the plurality of pad gaps 53 in each sensing electrode 33SP may be formed separately from the plurality of electrode lines 33L.
- the plurality of electrode lines 33L and the plurality of pad gaps 53 are separately formed, first, the plurality of electrode lines 33L are formed by various methods, and then a part of the plurality of electrode lines 33L is formed by an etching method or the like. By cutting by the laser ablation method, the pad gap portion 53 is formed. The number and position of the pad gaps 53 can be changed by changing the setting of the cutting position. Therefore, even if the optimum capacitance range of the touch sensor electrode 21 changes, the electrode line 33L is not forced to be structurally changed in terms of width, position, number, and the like.
- FIG. 5 A part of the configuration of the touch sensor electrode 21 will be described with reference to FIG. As shown in FIG. 5, a plurality of cells 21 ⁇ / b> C are set in the touch sensor electrode 21. In each cell 21C, in a plan view facing the transparent dielectric substrate 33, a first line group constituting one drive electrode 31DP and a second line group constituting one sensing electrode 33SP intersect three-dimensionally. It is an area to do. Therefore, in each of the plurality of drive electrodes 31DP, the plurality of cells 21C are arranged along the second arrangement direction D2 orthogonal to the first arrangement direction D1 in which the drive electrodes 31DP are arranged.
- each of the plurality of sensing electrodes 33SP the plurality of cells 21C are arranged along the first arrangement direction D1 orthogonal to the second arrangement direction D2 in which the sensing electrodes 33SP are arranged.
- Each cell 21C is located inside the display surface 10S.
- the cell 21C closest to the pad 31P for each drive electrode 31DP is the closest cell 21Cd, and the closest cell 21Cd is an example of the first closest cell.
- the first line group constituting each drive electrode 31DP includes a drive non-connection line 42 not connected to the pad 31P and a drive electrode line 41 connected to the pad 31P in the closest cell 21Cd.
- the pad gap 43 located between each non-drive connection line 42 and the pad 31P is located between the pad 31P and the nearest cell 21Cd.
- the cell 21C closest to the pad 33P for each sensing electrode 33SP is the closest cell 21Cs, and the closest cell 21Cs is an example of the second closest cell.
- the second line group constituting each sensing electrode 33SP includes, in the closest cell 21Cs, a sensing non-connection line 52 that is not connected to the pad 33P and a sensing electrode line 51 that is connected to the pad 33P.
- the pad gap 53 located between each non-sensing connection line 52 and the pad 33P is located between the pad 33P and the nearest cell 21Cs.
- the plurality of pad gaps 43 included in each drive electrode 31DP are positioned outside the display surface 10S, and the plurality of pad gaps 53 included in each sensing electrode 33SP are also positioned outside the display surface 10S. Yes. For this reason, none of the plurality of pad gaps 43 in each drive electrode 31DP and the plurality of pad gaps 53 in each sensing electrode 33SP are positioned at a portion visually recognized by the user of the display device. The quality of the image displayed on the screen can be prevented from being lowered by a plurality of pad gaps.
- FIGS. 6 and 7 schematically show the shape of the drive electrode and the shape of the sensing electrode for convenience of explaining the operation of the touch sensor electrode.
- one sensing electrode 33SP is stacked on one drive electrode 31DP.
- the sensing electrode 33SP includes the sensing electrode line 51 connected to the pad 33P and the non-sensing sensing connection line 52 not connected to the pad 33P.
- the drive electrode 31DP includes a drive electrode line 41 connected to the pad 31P and a drive non-connection line 42 not connected to the pad 31P.
- the drive electrode line 41 and the sensing electrode line 51 form a capacitance C that contributes to a change in the magnitude of the voltage detected by the detection circuit 35.
- the drive electrode line 41 and the sensing non-connection line 52 form a parasitic capacitance that does not contribute to a change in the magnitude of the voltage detected by the detection circuit 35.
- the drive non-connection line 42 and the sensing electrode line 51 form a parasitic capacitance.
- each cell 21 ⁇ / b> C out of the portions where each electrode line 31 ⁇ / b> L and each electrode line 33 ⁇ / b> L intersect three-dimensionally, the detection circuit is only in the portion where each drive electrode line 41 and each sensing electrode line 51 intersect three-dimensionally. A capacitance C reflected in the detection result 35 is formed.
- all of the electrode lines 33L included in one sensing electrode 33SP are sensing electrode lines 51 connected to the pad 33P, and all of the electrode lines 31L included in one drive electrode 31DP are padded. This is a drive electrode line 41 connected to 31P. Therefore, an electrostatic capacitance C that contributes to a change in the magnitude of the voltage detected by the detection circuit 35 is formed in all of the portions where the electrode lines 31L and the electrode lines 33L intersect three-dimensionally.
- each drive electrode 31DP includes a plurality of pad gaps 43 and each sensing electrode 33SP includes a plurality of pad gaps 53, the pad gaps are not provided. As compared with, the initial value of the capacitance C that contributes to the voltage change in each cell 21C becomes smaller.
- the design is changed so that the number of drive non-connection lines 42 decreases as the number of drive electrode lines 41 increases, or the number of drive non-connection lines 42 increases as the number of drive electrode lines 41 decreases.
- the initial value of the capacitance C can be adjusted to an optimum range.
- the initial value of the capacitance C can be adjusted to an optimum range.
- the direction in which the plurality of electrode lines constituting each drive electrode are arranged and the direction in which the plurality of electrode lines constituting each sensing electrode are arranged are generally orthogonal to each other.
- the display device since the display device includes a black matrix having a lattice shape, interference fringes are formed due to a shift between the lattice shape formed by the plurality of electrode lines and the lattice shape of the black matrix. .
- each of the plurality of electrode lines 31L configuring each drive electrode 31DP and each of the plurality of electrode lines 33L configuring each sensing electrode 33SP has a polygonal line shape. Generation of interference fringes is suppressed.
- the initial value of the capacitance C between the drive electrode 31DP and the sensing electrode 33SP is set to each of the plurality of electrode lines. Defined by shape. Therefore, the initial value of the capacitance C between the drive electrode 31DP and the sensing electrode 33SP may exceed the range of values suitable for the change in capacitance due to contact.
- the drive electrode 31DP includes the plurality of pad gap portions 43 and the sensing electrode 33SP includes the plurality of pad gap portions 53, generation of interference fringes in the display device is suppressed.
- the initial value of the capacitance C is likely to be included in the range of values suitable for the change in capacitance due to contact.
- the plurality of pad gaps 43 in each drive electrode 31DP are regularly arranged in the plurality of drive electrodes 31DP along the first arrangement direction D1, and the pad gaps 53 in each sensing electrode 33SP are plural.
- the sensing electrodes 33SP are regularly arranged along the second arrangement direction D2. Therefore, in the plurality of drive electrodes 31DP and the plurality of sensing electrodes 33SP, portions where no capacitance is formed are regularly arranged. Therefore, the position where the change in capacitance is measured is less likely to occur within the region where the touch sensor electrode 21 is formed. As a result, the detection by the touch sensor is less likely to be biased.
- the electrode line 31L facing the pad 31P via the pad gap 43 is other than the electrode line 31L located at each of the two ends in the first arrangement direction D1 in each drive electrode 31DP. Electrode wire 31L.
- the electrode line 33L facing the pad 33P via the pad gap 53 is an electrode other than the electrode line 33L located at each of the two ends in the second arrangement direction D2 in the sensing electrode 33SP. Line 33L.
- each drive electrode 31DP capacitance is formed at least at both ends in the first arrangement direction D1
- each sensing electrode 33SP capacitance is formed at least at both ends in the second arrangement direction D2.
- the effects listed below can be obtained.
- the drive non-connection line 42 that is not connected to the pad 31P has a capacitance measured by the peripheral circuit between each sensing electrode line 51 and the capacitance. Do not form.
- the sensing non-connection line 52 that is not connected to the pad 33P substantially forms a capacitance measured by the peripheral circuit with each drive electrode line 41. do not do.
- the initial value of the capacitance in each cell 21C becomes smaller in accordance with the number of electrode lines that are not connected to the pads than in a configuration that does not have electrode lines that are not connected to the pads. Therefore, it is possible to suppress the initial value of the capacitance in each cell 21C from exceeding a value suitable for the change in capacitance due to contact.
- the design is changed so that the number of drive non-connection lines 42 decreases as the number of drive electrode lines 41 increases, or the number of drive non-connection lines 42 increases as the number of drive electrode lines 41 decreases.
- the initial value of the capacitance C can be adjusted to an optimum range.
- the initial value of the capacitance C can be adjusted to an optimum range.
- a first modification will be described with reference to FIG.
- the first modification differs from the first embodiment described above in the position of the pad gap portion in the first arrangement direction D1 among the plurality of drive electrodes 31DP. Therefore, in the following, such differences will be described in detail, and detailed description will be omitted by attaching the same reference numerals as those in FIG. 5 to the same components as those in the first embodiment.
- FIG. 8 is a plan view of the drive electrode 31DP and the sensing electrode 33SP viewed from the direction in which the drive electrode 31DP and the sensing electrode 33SP are stacked, as in FIG.
- the line widths of the electrode lines 31L and the electrode lines 33L are exaggerated for convenience of describing the arrangement of the drive electrodes 31DP and the sensing electrodes 33SP, as in FIG.
- one drive electrode 31DP is composed of a pad 31P and nine electrode lines 31L formed in a polygonal line shape extending in the second arrangement direction D2, and the second arrangement direction D2 It is a strip-shaped electrode extended along.
- Each of the plurality of drive electrodes 31DP is arranged at intervals along the first arrangement direction D1.
- the fourth electrode line 31L and the sixth electrode line 31L are set as the drive non-connection lines 42.
- Line 41, one drive non-connection line 42, and three drive electrode lines 41 are arranged in order.
- the drive electrode lines 41 constituting the remaining eight electrode lines, and the drive non-connection lines 42 are arranged substantially line-symmetrically.
- the seven electrode lines 31L are the drive electrode lines 41, and the two electrode lines 31L are the drive non-connection lines 42. It is.
- Each of the non-drive connection lines 42 faces the pads 31P with a predetermined interval in the second arrangement direction D2.
- Each of the gaps between the end of each non-drive connection line 42 close to the pad 31P and the pad 31P is a pad gap 44.
- Each pad gap 44 is located outside the display surface 10S.
- the non-drive connection lines 42 of the touch sensor electrode 21 are regularly arranged in the first arrangement direction D1 among the plurality of drive electrodes 31DP. That is, in the part where two pads 31P are adjacent in the first arrangement direction D1, two drive non-connection lines 42 sandwich six drive electrode lines 41 that are connected to three different pads 31P. It is out. On the other hand, two drive non-connection lines 42 sandwich one drive electrode line 41 at a portion along one pad 31P in the first arrangement direction D1.
- One drive electrode 31DP includes two drive unconnected lines 42, while one sensing electrode 33SP includes four sensing unconnected lines 52 as in the first embodiment. That is, the number of drive unconnected lines 42 included in one drive electrode 31DP and the number of sensing unconnected lines 52 included in one sensing electrode 33SP are different from each other. Thereby, the capacitance of each cell 21C is different from the capacitance of each cell 21C in the first embodiment described above.
- the number of drive non-connection lines 42 included in one drive electrode 31DP and the number of sensing non-connection lines 52 included in one sensing electrode 33SP are different from each other.
- the capacitance of each cell 21C changes. Further, the capacitance of each cell 21C can be changed without changing the shape of each drive electrode 31DP constituting the touch sensor electrode 21 and the shape of each sensing electrode 33SP. As a result, the capacitance of each cell 21C is matched to the specifications of the peripheral circuit connected to the touch sensor electrode 21 by changing the number of unconnected lines included in each cell 21C.
- the number of drive unconnected lines 42 of one drive electrode 31DP is different from the number of sensing unconnected lines 52 of one sensing electrode 33SP.
- the capacitance of each cell 21C compared to a configuration in which the number of drive unconnected lines 42 of one drive electrode 31DP is the same as the number of sensing unconnected lines 52 of one sensing electrode 33SP. The value of is different.
- the specification of the peripheral circuit is different from the peripheral circuit in which the initial value of the electrostatic capacitance in the configuration in which the number of drive unconnected lines 42 and the number of sensing unconnected lines 52 are equal to each other is the optimum range,
- the initial value of the capacitance in each cell 21C is likely to be included in a range suitable for measurement.
- FIG. 9 is a plan view of the drive electrode 31DP and the sensing electrode 33SP as seen from the direction in which the drive electrode 31DP and the sensing electrode 33SP are stacked, as in FIG.
- the line widths of the electrode lines 31L and the electrode lines 33L are exaggerated for convenience of describing the arrangement of the drive electrodes 31DP and the sensing electrodes 33SP, as in FIG.
- one drive electrode 31DP is composed of one pad 31P and nine electrode lines 31L formed in a polygonal line shape extending in the second arrangement direction D2, and has a second arrangement. It is a strip electrode extending along the direction D2. Each of the plurality of drive electrodes 31DP is arranged along the first arrangement direction D1.
- the drive electrode line 41 connected to the pad 31P in order from one of the two ends of the drive electrode 31DP in the first arrangement direction D1 Drive non-connection lines 42 that are not connected to the pads 31P are alternately arranged.
- Each of the non-drive connection lines 42 faces the pads 31P with a predetermined interval in the second arrangement direction D2.
- Each of the gaps between the end of each non-drive line 42 near the pad 31P and the pad 31P is a pad gap 43.
- Each pad gap 43 is located outside the display surface 10S.
- Each drive non-connection line 42 is further divided into a plurality of drive non-connection pieces 42a by a plurality of electrode line gaps 45 at a portion in the middle in the second arrangement direction D2.
- the plurality of electrode line gap portions 45 are arranged along the second arrangement direction D2 at a portion farther from the pad 31P than the pad gap portion 43, and each electrode line gap portion is provided. 45 is located between all the two cells 21C adjacent to each other in the second arrangement direction D2.
- Each of the plurality of non-drive connection pieces 42a constituting each non-drive connection line 42 has substantially the same length along the second arrangement direction D2. Therefore, the parasitic capacitance formed between each non-drive piece 42a and the electrode line 33L facing each other is almost equal. Therefore, in the plurality of cells 21 ⁇ / b> C, the magnitudes of the electrostatic capacitance including the parasitic capacitance are almost equal.
- one sensing electrode 33SP is composed of one pad 33P and nine electrode lines 33L formed in a polygonal line shape extending along the first arrangement direction D1, and along the first arrangement direction D1. It is a strip-shaped electrode that extends.
- Each of the plurality of sensing electrodes 33SP is aligned along the second arrangement direction D2 and is a position that three-dimensionally intersects with each of the plurality of drive electrodes 31DP when viewed in a plan view direction facing the transparent dielectric substrate 33. Is arranged.
- the sensing electrode line 51 connected to the pad 33P in order from one of the two ends of the sensing electrode 33SP in the second array direction D2 Sensing non-connection lines 52 that are not connected to the pads 33P are alternately arranged.
- Each sensing non-connection line 52 faces the pad 33P with a predetermined interval in the second arrangement direction D2.
- Each gap between the end of each sensing non-connection line 52 close to the pad 33P and the pad 33P is a pad gap 53.
- Each pad gap 53 is located outside the display surface 10S.
- Each sensing non-connection line 52 is further divided into a plurality of sensing non-connection pieces 52a by a plurality of electrode line gaps 54 in the middle of the first arrangement direction D1.
- the plurality of electrode line gaps 54 are arranged along the first arrangement direction D1 at a part farther from the pad 33P than the pad gap 53, and each electrode line gap is formed. 54 is located in all between the two cells 21C adjacent to each other in the first arrangement direction D1.
- each of the plurality of sensing non-connection pieces 52a constituting each sensing non-connection line 52 is substantially equal along the first arrangement direction D1. Therefore, the size of the parasitic capacitance formed between each sensing non-connecting piece 52a and the electrode line 31L facing each other is substantially equal. Therefore, in the plurality of cells 21 ⁇ / b> C, the magnitudes of the electrostatic capacitance including the parasitic capacitance are almost equal.
- the second modification in addition to the effects (1) to (3) described above, the following effects can be obtained. (5) Since the parasitic capacitances in the cells 21C are almost equal and the parasitic capacitances in the cells 21C are hardly related to each other, the capacitances in the cells 21C including the parasitic capacitances are almost equal. .
- the electrode line gap 45 is located at all between the two cells 21C adjacent along the second arrangement direction D2. ing. Further, in each of the sensing non-connection lines 52 constituting each sensing electrode 33SP, the electrode line gap portion 54 is located in all between the two adjacent cells 21C.
- the electrode line gap 45 is located at a part between two adjacent cells 21C along the second arrangement direction D2. Also good. Further, in each of the non-sensing connection lines 52 constituting each sensing electrode 33SP, the electrode line gap 54 may be located at a part between the two cells 21C adjacent in the first arrangement direction D1. Even with such a configuration, the following effects can be obtained.
- the electrode line gap 45 is located at all between the two cells 21C adjacent along the second arrangement direction D2. ing. Further, in each of the sensing non-connection lines 52 constituting each sensing electrode 33SP, the electrode line gap portion 54 is located in all between the two adjacent cells 21C.
- the electrode line gap 45 is not limited to this, and may be located at a position other than between the two adjacent cells 21C along the second arrangement direction D2 as long as the electrode gap 45 is farther from the pad 31P than the pad gap 43. Good. Further, the electrode line gap 54 may be located at a position other than between the two cells 21C adjacent to each other along the first arrangement direction D1 as long as it is farther from the pad 33P than the pad gap 53. According to such a configuration, the effect according to the above (6) can be obtained.
- the electrode line gap 45 is located in the middle of the drive non-connection line 42 constituting each drive electrode 31DP, and the electrode line is located in the middle of the sensing non-connection line 52 constituting each sensing electrode 33SP.
- a gap 54 is located.
- the electrode line gap 45 is located only in the middle of the drive non-connection line 42 constituting each drive electrode 31DP, or the electrode line gap only in the sensing non-connection line 52 constituting each sensing electrode 33SP.
- the structure in which the part 54 is located may be sufficient.
- At least one of the electrode lines 31L positioned at the two ends in the first arrangement direction D1 among the nine electrode lines 31L constituting each drive electrode 31DP may be the drive non-connection line 42. Further, among the nine electrode lines 33L constituting each sensing electrode 33SP, at least one of the electrode lines 33L positioned at two ends in the second arrangement direction D2 may be the sensing non-connection line 52. Even in such a configuration, as long as each drive electrode 31DP includes the drive non-connection line 42 and each sensing electrode 33SP includes the sensing non-connection line 52, it is possible to obtain the effect according to the above (1). it can.
- the pad gaps 43 may be irregularly arranged along the first arrangement direction D1 among the plurality of drive electrodes 31DP.
- the pad gaps 53 may be irregularly arranged along the second arrangement direction D2 among the plurality of sensing electrodes 33SP. Even in such a configuration, as long as each drive electrode 31DP includes the drive non-connection line 42 and each sensing electrode 33SP includes the sensing non-connection line 52, it is possible to obtain the effect according to the above (1). it can.
- the number of drive unconnected lines 42 included in each drive electrode 31DP is not limited to the number described above, and may be any number as long as each drive electrode 31DP includes at least one drive electrode line 41.
- the number of sensing non-connection lines 52 included in each sensing electrode 33SP is not limited to the number described above, and may be any number as long as each sensing electrode 33SP includes at least one sensing electrode line 51. .
- Each of the plurality of drive electrodes 31DP and each of the plurality of sensing electrodes 33SP includes at least one unconnected line.
- the present invention is not limited thereto, and only each of the plurality of drive electrodes 31DP or only each of the plurality of sensing electrodes 33SP may include a non-connection line. Even with such a configuration, as long as each of the plurality of drive electrodes 31DP or each of the plurality of sensing electrodes 33SP includes a non-connection line, the effect according to the above (1) can be obtained.
- each drive electrode 31DP includes two drive non-connection lines 42, and each sensing electrode 33SP includes four sensing non-connection lines 52. That is, the number of drive unconnected lines 42 included in each drive electrode 31DP is smaller than the number of sensing unconnected lines 52 included in each sensing electrode 33SP. Not limited to this, the number of drive unconnected lines 42 included in each drive electrode 31DP may be larger than the number of sensing unconnected lines 52 included in each sensing electrode 33SP.
- Each drive electrode 31DP includes nine electrode lines 31L, and each sensing electrode 33SP includes nine electrode lines 33L. Not only this but each drive electrode 31DP may be the structure provided with 2 or more and 8 or less electrode lines 31L, and the structure provided with 10 or more electrode lines 31L.
- Each sensing electrode 33SP may have a configuration including two or more and eight or less electrode wires 33L, or may have a configuration including ten or more electrode wires 33L.
- the plurality of pad gaps 43 in each drive electrode 31DP and the plurality of pad gaps 53 in each sensing electrode 33SP may be located inside the display surface 10S.
- the plurality of pad gaps 44 in each drive electrode 31DP and the plurality of pad gaps 53 in each sensing electrode 33SP may be located inside the display surface 10S.
- the pad gap portion 43 in each drive electrode 31DP may not be located between the pad 31P and the nearest cell 21Cd, and the pad gap The unit 43 may be located inside the nearest cell 21Cd. Further, a part of the plurality of pad gaps 43 may be located between the pad 31P and the nearest cell 21Cd, and the remaining part may be located inside the nearest cell 21Cd.
- the first line group constituting the drive electrode 31DP only needs to include the drive non-connection line 42 not connected to the pad 31P and the drive electrode line 41 connected to the pad 31P.
- the pad gap 53 in each sensing electrode 33SP may not be located between the pad 33P and the nearest cell 21Cs, and the pad gap The part 53 may be located inside the closest cell 21Cs. Further, a part of the plurality of pad gaps 53 may be located between the pad 33P and the nearest cell 21Cs, and the remaining part may be located inside the nearest cell 21Cs.
- the second line group constituting the sensing electrode 33SP only needs to include the sensing non-connection line 52 that is not connected to the pad 33P and the sensing electrode line 51 that is connected to the pad 33P.
- an example of the first strip electrode may be the sensing electrode 33SP instead of the drive electrode 31DP.
- an example of the second strip electrode is the drive electrode 31DP
- an example of the first base material is the transparent dielectric substrate 33
- an example of the second base material is the transparent substrate 31.
- FIG. 10 and FIG. 11 a second embodiment in which a touch sensor electrode, a touch panel, and a display device are embodied will be described.
- the second embodiment differs from the first embodiment described above in the configuration of each drive electrode 31DP and the configuration of each sensing electrode 33SP. Therefore, in the following, such differences will be described in detail, and detailed description will be omitted by assigning the same reference numerals as those in FIG. 5 to the same components as those in the first embodiment.
- the configuration of the drive electrode and the configuration of the sensing electrode will be described in order.
- FIG. 10 is a plan view showing a planar structure of the drive electrode 31DP.
- the line width of the electrode line is exaggerated for convenience of explaining the arrangement of the electrode lines provided in the drive electrode 31DP.
- Each of the plurality of drive electrodes 31DP included in the touch sensor electrode 21 includes a plurality of electrode lines.
- the plurality of electrode lines in each drive electrode 31DP form a lattice shape together with the plurality of electrode lines included in each of the plurality of sensing electrodes 33SP when viewed from the direction in which the plurality of drive electrodes 31DP and the plurality of sensing electrodes 33SP are stacked. To do. That is, the plurality of electrode lines provided in each drive electrode 31DP has a shape that follows a part of the lattice shape.
- the grid shape is arranged at equal intervals along the first arrangement direction D1, and has a plurality of first reference lines that are inclined with respect to the first arrangement direction D1 and the second arrangement direction D2, and It is composed of a plurality of second reference lines arranged at equal intervals along the two arrangement directions D2 and orthogonal to the first reference line.
- one drive electrode 31DP is provided with one of a plurality of pads 31P arranged at intervals along the first arrangement direction D1.
- One drive electrode 31DP further includes a plurality of main electrode lines 61L having a linear shape extending along a first extending direction that forms a facing angle ⁇ 1 that is a predetermined angle with the first arrangement direction D1, and a main electrode line
- a first line group including a plurality of sub electrode lines 62L having a linear shape extending along a second extending direction that is a direction orthogonal to 61L is provided.
- the facing angle ⁇ 1 is an angle smaller than 90 °.
- One drive electrode 31DP is an example of a first strip electrode extending along the second arrangement direction D2.
- the plurality of drive electrodes 31DP are arranged at intervals along the first arrangement direction D1.
- the main electrode lines 61L adjacent to each other along the first arrangement direction D1 are arranged with a first interval S1 along the second extending direction, and extend along the first extending direction.
- two sub-electrode lines 62L adjacent to each other along the second arrangement direction D2 are arranged with a second interval S2 along the second arrangement direction D2.
- two sub electrode lines 62L arranged along the first arrangement direction D1 constitute one sub electrode line pair.
- Two sub electrode line pairs adjacent to each other along the second arrangement direction D2 are arranged with a second interval S2 along the second arrangement direction D2.
- n is an integer of 3 or more.
- one sub electrode line 62L is connected to three main electrode lines 61L adjacent to each other along the first arrangement direction D1.
- One sub electrode line pair is connected to five main electrode lines 61L adjacent to each other along the first arrangement direction D1.
- only one main electrode line 61L has a length equal to or longer than the second interval S2 along the second arrangement direction D2.
- the k-th sub-electrode line pair and the k + 1-th sub-electrode line pair (k is an integer not smaller than 1 and not larger than n) have a length equal to or longer than the second interval S2 along the second arrangement direction D2. They are connected by one main electrode line 61L.
- five main electrode lines 61L are connected to one pad 31P, and these five main electrode lines 61L are electrically connected by a sub electrode line pair in the first row.
- these five main electrode lines 61L are electrically connected by a sub electrode line pair in the first row.
- only one main electrode line 61L positioned at the end in the first arrangement direction D1 has a second interval along the second arrangement direction D2. It has a length of S2 or more.
- only one main electrode line 61L positioned at the end in the first arrangement direction D1 is connected to the sub electrode line pair in the second row. is doing.
- five main electrode lines 61L are connected to the second row of sub electrode line pairs, and these five main electrode lines 61L are electrically connected by the second row of sub electrode line pairs. .
- the five main electrode lines 61L connected to the sub electrode line pair in the second row only one main electrode line 61L located at the end in the first arrangement direction D1 is also in the three rows. It has a length equal to or longer than the second interval S2 toward the sub electrode line pair of the eye.
- only one main electrode line 61L located at the end in the first arrangement direction D1 is the sub electrode in the third row. Connected to a wire pair.
- a drive electrode line that is an example of a connection electrode line that is electrically connected to the pad 31P is composed of a plurality of main electrode lines 61L and a plurality of sub electrode lines 62L. Yes.
- the plurality of main electrode lines 61L constituting one drive electrode 31DP include a plurality of drive non-connection lines 63 that are not electrically connected to the pad 31P.
- Each drive non-connection line 63 is sandwiched between two sub electrode line pairs adjacent to each other in the second arrangement direction D2 in one drive electrode 31DP.
- Each drive non-connection line 63 is separated from the sub electrode line pair by two gap portions 64 and is not electrically connected to the pad 31P.
- Each gap portion 64 is located in a portion sandwiched between two sub electrode line pairs adjacent to each other in the second arrangement direction D2.
- the gap portion 64 is an example of a first gap portion.
- At least a part of the plurality of main electrode lines 61 ⁇ / b> L has at least one drive non-connection line 63 separated from the other part by the two gap portions 64.
- the plurality of sub electrode line pairs are positioned at a predetermined interval in the second arrangement direction D2, and each non-drive connection line 63 includes two sub electrode line pairs adjacent to each other in the second arrangement direction D2.
- the gap portion 64 is located at a position between the two sub electrode line pairs.
- Two gap portions 64 are located in a region sandwiched between two sub electrode lines 62L adjacent to each other in the second arrangement direction D2. Therefore, the number of gap portions 64 for forming the drive non-connection line 63 can be minimized. Therefore, the number of the gap portions 64 located in the portion overlapping the display surface 10S visually recognized by the user of the touch panel 20 is reduced. As a result, the influence of the gap 64 on the quality of the image displayed on the display surface 10S can be reduced.
- the second main electrode line 61L and the third main electrode line 61L are a sub-electrode line pair in the first row and two rows. It functions as the drive non-connection line 63 between the sub electrode line pair of the eye.
- the second main electrode line 61L and the third main electrode line 61L are also in the second row. Between the sub electrode line pair and the sub electrode line pair in the third row, it functions as a drive non-connection line 63.
- the drive non-connection line 63 that is not electrically connected to the pad 31 ⁇ / b> P includes a plurality of main electrode lines 61 ⁇ / b> L.
- a drive electrode line connected to the pad 31P is constituted by a portion of the plurality of main electrode lines 61L excluding the plurality of drive non-connection lines 63 and the plurality of sub electrode lines 62L. Has been.
- Each of the plurality of gaps 64 in each drive electrode 31DP may be formed simultaneously with the plurality of main electrode lines 61L and the plurality of sub electrode lines 62L.
- a sputtering method using a plurality of main electrode lines 61L, a plurality of sub electrode lines 62L, and a mask having openings corresponding to the plurality of gaps 64 is used.
- the number and position of the gap portions 64 can be changed by changing the mask setting corresponding to the connection portion between the main electrode line 61L and the sub electrode line 62L. Therefore, even if the optimum capacitance range of the touch sensor electrode 21 changes, structural changes such as the width, position, and number of the electrode lines are not forced.
- each of the plurality of gaps 64 in each drive electrode 31DP may be formed separately from the plurality of main electrode lines 61L and the plurality of sub electrode lines 62L.
- a plurality of main electrode lines 61L and a plurality of sub electrode lines 62L are formed by various methods, and then a part of the plurality of main electrode lines 61L is cut by an etching method or a laser ablation method.
- a plurality of gaps 64 are formed.
- the number and position of the gaps 64 can be changed by changing the setting of the cutting position. Therefore, even if the optimum range of the capacitance of the touch sensor electrode 21 changes, structural changes such as the width, position, and number of the electrode lines are not forced.
- FIG. 11 is a plan view showing a planar structure of the sensing electrode 33SP.
- the line widths of the electrode lines are exaggerated for convenience of explaining the arrangement of the electrode lines provided in the sensing electrode 33SP.
- Each of the plurality of sensing electrodes 33SP included in the touch sensor electrode 21 includes a plurality of electrode lines, like the drive electrode 31DP.
- the electrode lines in the plurality of sensing electrodes 33SP are together with the plurality of electrode lines provided in each of the plurality of drive electrodes 31DP when viewed from the direction in which the plurality of drive electrodes 31DP and the plurality of sensing electrodes 33SP are stacked.
- a lattice shape is formed. That is, the plurality of electrode lines included in each sensing electrode 33SP is a part of a lattice shape, and is a shape that follows a portion different from the plurality of electrode lines included in each drive electrode 31DP described above.
- one sensing electrode 33SP includes one of a plurality of pads 33P arranged at intervals along the second arrangement direction D2.
- One sensing electrode 33SP further includes a plurality of main electrode lines 71L having a linear shape extending along the second extending direction described above, which is the direction in which the second arrangement direction D2 and the above-described opposing angle ⁇ 1 are formed. Yes.
- One sensing electrode 33SP further includes a plurality of sub electrode lines 72L having a linear shape extending in the direction perpendicular to the main electrode line 71L and extending in the first extending direction described above.
- One sensing electrode 33SP is an example of a second strip electrode extending along the first arrangement direction D1.
- Each of the plurality of sensing electrodes 33SP is arranged at intervals along the second arrangement direction D2.
- the main electrode lines 71L adjacent to each other along the second arrangement direction D2 are arranged with a first interval S1 along the first extending direction, and extend along the second extending direction.
- two sub-electrode lines 72L adjacent to each other along the second arrangement direction D2 are arranged at a second interval S2 along the first arrangement direction D1.
- two sub electrode lines 72L arranged along the second array direction D2 constitute one sub electrode line pair.
- Two sub electrode line pairs adjacent to each other along the first arrangement direction D1 are arranged with a second interval S2 along the first arrangement direction D1.
- m is an integer of 3 or more).
- one sub electrode line 72L is connected to three main electrode lines 71L adjacent to each other along the second arrangement direction D2.
- One sub-electrode line pair is connected to five main electrode lines 71L adjacent to each other along the second arrangement direction D2.
- only one main electrode line 71L has a length equal to or longer than the second interval S2 along the first arrangement direction D1.
- the j-th sub electrode line pair and the j + 1-th sub electrode line pair (j is an integer not smaller than 1 and not larger than m) have a length equal to or longer than the second interval S2 along the first arrangement direction D1. They are connected by one main electrode line 71L.
- five main electrode lines 71L are connected to one pad 33P, and these five main electrode lines 71L are electrically connected by a sub-electrode line pair in the first row.
- these five main electrode lines 71L are electrically connected by a sub-electrode line pair in the first row.
- only one main electrode line 71L located at the center in the second arrangement direction D2 is provided with the second interval along the first arrangement direction D1. It has a length of S2 or more.
- only one main electrode line 71L located at the center in the second arrangement direction D2 is connected to the sub electrode line pair in the second row. is doing.
- five main electrode lines 71L are connected to the second row sub-electrode line pairs, and these five main electrode lines 71L are electrically connected by the second row sub-electrode line pairs. .
- the five main electrode lines 71L connected to the sub electrode line pair in the second row only one main electrode line 71L located at the center in the second arrangement direction D2 is also in three rows. It has a length equal to or longer than the second interval S2 toward the sub electrode line pair of the eye.
- only one main electrode line 71L located at the center in the second arrangement direction D2 is the sub electrode in the third row. Connected to a wire pair.
- a sensing electrode line which is an example of a connection electrode line electrically connected to the pad 33P, is composed of a plurality of main electrode lines 71L and a plurality of sub electrode lines 72L. Yes.
- the plurality of main electrode lines 71L constituting one sensing electrode 33SP include a plurality of sensing non-connection lines 73 that are not connected to the pad 33P. Each sensing non-connection line 73 is sandwiched between two sub electrode line pairs adjacent to each other in the first arrangement direction D1 in one sensing electrode 33SP.
- Each sensing non-connection line 73 is separated from the sub electrode line pair by two gap portions 74 and is not electrically connected to the pad 33P.
- Each gap 74 is located at a portion sandwiched between two sub electrode line pairs adjacent to each other in the first arrangement direction D1.
- the gap portion 74 is an example of a second gap portion.
- At least a part of the plurality of main electrode lines 71 ⁇ / b> L has at least one sensing non-connection line 73 separated from the other part by the two gap portions 74.
- the plurality of sub-electrode line pairs are positioned at a predetermined interval in the first arrangement direction D1, and each sensing non-connection line 73 includes two sub-electrode line pairs adjacent to each other in the first arrangement direction D1.
- the gap portion 74 is located at a position between the two sub electrode line pairs.
- Two gap portions 74 are located in a region sandwiched between two sub electrode lines 72L adjacent to each other in the first arrangement direction D1. Therefore, the number of gaps 74 for forming the sensing non-connection line 73 is the smallest. Therefore, the number of the gap portions 74 located in a portion overlapping with the display surface 10S visually recognized by the user of the touch panel 20 is reduced. As a result, the influence of the gap 74 on the quality of the image displayed on the display surface 10S can be reduced.
- the first main electrode line 71L and the second main electrode line 71L are the first row sub-electrode line pair and the second row. It functions as a sensing non-connection line 73 between the sub electrode line pair of the eye.
- the first main electrode line 71L and the second main electrode line 71L are also in the second row. Between the sub electrode line pair and the sub electrode line pair in the third row, it functions as a sensing non-connection line 73.
- the setting of the sensing non-connection line 73 in the main electrode line 71L is repeated for each row of the sub electrode line pair along the first arrangement direction D1. And as the white line shows in FIG. 11, the sensing non-connection line 73 which is not electrically connected to the pad 33P is composed of a plurality of main electrode lines 71L.
- a portion of the plurality of main electrode lines 71L excluding the plurality of sensing non-connection lines 73 and the plurality of sub electrode lines 72L constitute a sensing electrode line connected to the pad 33P. Has been.
- Each of the plurality of gaps 74 in each sensing electrode 33SP may be formed simultaneously with the plurality of main electrode lines 71L and the plurality of sub electrode lines 72L.
- a sputtering method using a mask having openings corresponding to the plurality of main electrode lines 71L, the plurality of sub electrode lines 72L, and the plurality of gaps 74 is used.
- the number and position of the gaps 74 can be changed by changing the mask setting corresponding to the connection portion between the main electrode line 71L and the sub electrode line 72L. Therefore, even if the optimum capacitance range of the touch sensor electrode 21 is changed, structural changes such as the width, position, and number of the electrode lines are not forced.
- each of the plurality of gaps 74 in each sensing electrode 33SP may be formed separately from the plurality of main electrode lines 71L and the plurality of sub electrode lines 72L.
- a plurality of main electrode lines 71L and a plurality of sub electrode lines 72L are formed by various methods, and then a part of the plurality of main electrode lines 71L is cut by an etching method or a laser ablation method.
- a plurality of gaps 74 are formed.
- the number and position of the gaps 74 can be changed by changing the setting of the cutting position. Therefore, even if the optimum capacitance range of the touch sensor electrode 21 is changed, structural changes such as the width, position, and number of the electrode lines are not forced.
- FIG. 12 is a plan view of the drive electrode 31DP and the sensing electrode 33SP as seen from the direction in which the drive electrode 31DP and the sensing electrode 33SP are stacked.
- the line width of the electrode line provided for the drive electrode 31DP and the line width of the electrode line provided for the sensing electrode 33SP are exaggerated.
- the drive electrode 31DP is indicated by a thin line
- the sensing electrode 33SP is indicated by a thick line.
- the plurality of drive electrodes 31DP and the plurality of sensing electrodes 33SP are directions in which the plurality of drive electrodes 31DP and the plurality of sensing electrodes 33SP are stacked, and the transparent dielectric substrate 33 and A lattice shape is formed when viewed from the opposite planar view direction.
- each of the plurality of main electrode lines 61L constituting one drive electrode 31DP is one of the plurality of main electrode lines 71L included in each sensing electrode 33SP when viewed from the plan view direction facing the transparent dielectric substrate 33.
- Cross three-dimensionally As a result, a lattice shape is formed in the portions excluding each of the drive electrodes 31DP adjacent to each other in the first arrangement direction D1 and each of the sensing electrodes 33SP adjacent to each other in the second arrangement direction D2.
- each of the plurality of sub electrode lines 62L is located between the sensing electrodes 33SP adjacent to each other in the second arrangement direction D2. Then, each of the plurality of sub electrode lines 62L fills the space between the main electrode lines 71L adjacent to each other along the second extending direction in the plurality of sensing electrodes 33SP. As a result, a lattice shape is formed in each of the sensing electrodes 33SP adjacent to each other in the second arrangement direction D2.
- each of the plurality of sub-electrode lines 72L constituting one sensing electrode 33SP is located between the drive electrodes 31DP adjacent to each other in the first arrangement direction D1.
- Each of the plurality of sub electrode lines 72L fills the space between the main electrode lines 61L adjacent in the first extending direction in the plurality of drive electrodes 31DP. As a result, a lattice shape is formed between the drive electrodes 31DP adjacent to each other in the first arrangement direction D1.
- a plurality of cells 21 ⁇ / b> C are set in the touch sensor electrode 21.
- Each cell 21 ⁇ / b> C is a region where one drive electrode 31 ⁇ / b> DP and one sensing electrode 33 ⁇ / b> SP intersect three-dimensionally in plan view facing the transparent dielectric substrate 33. Therefore, in each of the plurality of drive electrodes 31DP, the plurality of cells 21C are arranged along the second arrangement direction D2 orthogonal to the first arrangement direction D1 in which the drive electrodes 31DP are arranged. On the other hand, in each of the plurality of sensing electrodes 33SP, the plurality of cells 21C are arranged along the first arrangement direction D1 orthogonal to the second arrangement direction D2 in which the sensing electrodes 33SP are arranged. Each cell 21C is located inside the display surface 10S.
- the cell 21C closest to the pad 31P for each drive electrode 31DP is the closest cell 21Cd.
- the group of main electrode lines 61L constituting each drive electrode 31DP includes a drive non-connection line 63 that is not connected to the pad 31P in each cell 21C.
- the pad gap 64a that cuts the third main electrode line 61L from the sub electrode line pair is located inside the nearest cell 21Cd.
- the pad gap portion 64a for cutting the second main electrode line 61L from the sub electrode line pair is located between the closest cell 21Cd and the pad 33P.
- the plurality of gap portions 64 excluding the pad gap portion 64a include a gap portion 64 located inside the cell 21C and a gap portion 64 located between the two cells 21C.
- the gap portion 64 having the smallest distance from the pad 31P on the main electrode line 61L is the pad gap portion 64a.
- the cell 21C closest to the pad 33P for each sensing electrode 33SP is the closest cell 21Cs.
- the group of main electrode lines 71L constituting each sensing electrode 33SP includes a sensing non-connection line 73 that is not connected to the pad 33P in each cell 21C.
- the plurality of pad gaps 74a are located inside the closest cell 21Cs.
- the plurality of gaps 74 excluding the pad gap 74a includes a gap 74 located inside the cell 21C and a gap 74 located between the two cells 21C.
- the gap portion 74 located inside the closest cell 21Cs and having the smallest distance from the pad 33P on one main electrode line 71L is the pad portion. It is a gap 74a.
- each drive electrode 31DP includes a plurality of drive disconnection lines 63
- each sensing electrode 33SP includes a plurality of sensing disconnection lines 73. Therefore, compared to a configuration in which each drive electrode 31DP does not include a drive disconnection line and each sensing electrode 33SP does not include a sensing disconnection line, the initial value of the capacitance in each cell 21C is electrically applied to the pad. It becomes smaller according to the number of unconnected lines that are not connected to. Therefore, it is possible to suppress the initial value of the capacitance in each cell 21C from exceeding a value suitable for the change in capacitance due to contact.
- the initial value of the capacitance can be adjusted by a simple change of whether or not the electrode line and the pad are connected. That is, the initial value of the capacitance is likely to be included in a value range suitable for the change in capacitance due to contact.
- the capacitance in each of the plurality of cells 21C compared to a configuration in which all the main electrode lines do not include a non-connection line.
- the initial value of becomes smaller.
- FIG. 13 is a plan view of the drive electrode 31DP and the sensing electrode 33SP as seen from the direction in which the drive electrode 31DP and the sensing electrode 33SP are stacked, as in FIG.
- the line width of the electrode line provided in the drive electrode 31DP and the line width of the electrode line provided in the sensing electrode 33SP are exaggerated as in FIG.
- the drive electrode 31DP is indicated by a thin line
- the sensing electrode 33SP is indicated by a thick line.
- one sensing electrode 33SP includes one pad 33P, a plurality of main electrode lines 71L, and a plurality of sub electrode lines 72L.
- One sensing electrode 33SP is an example of a second strip electrode extending along the first arrangement direction D1.
- Each of the plurality of sensing electrodes 33SP is arranged at intervals along the second arrangement direction D2.
- the five main electrode lines 71L are connected to one pad 33P, and these five main electrode lines 71L are electrically connected by the sub electrode line pairs in the first row.
- one main electrode line 71L positioned at the end in the second array direction D2 and one positioned in the center of the second array direction D2 The main electrode line 71L has a length equal to or longer than the second interval S2 along the first arrangement direction D1.
- one main electrode line 71L positioned at the end in the second arrangement direction D2 and one main electrode line 71L positioned in the center Only is connected to the sub electrode line pair in the second row.
- five main electrode lines 71L are connected to the second row sub-electrode line pairs, and these five main electrode lines 71L are electrically connected by the second row sub-electrode line pairs. .
- this is also positioned at the center with one main electrode line 71L positioned at the end in the second arrangement direction D2.
- One main electrode line 71L having a length equal to or longer than the second interval S2 toward the sub electrode line pair in the third row.
- one main electrode line 71L located at the end in the second arrangement direction D2 and the center in the second arrangement direction D2 is connected to the sub electrode line pair in the third row.
- a plurality of main electrode lines 71L constituting one sensing electrode 33SP includes a plurality of sensing non-connection lines 73 that are not connected to the pad 33P. Each sensing non-connection line 73 is sandwiched between two sub electrode line pairs adjacent to each other in the first arrangement direction D1 in one sensing electrode 33SP.
- Each sensing non-connection line 73 is separated from the sub electrode line pair by two gap portions 74 and is not electrically connected to the pad 33P.
- Each gap 74 is located at a portion sandwiched between two sub electrode line pairs adjacent to each other in the first arrangement direction D1.
- the second main electrode line 71L is sensed between the sub electrode line pair in the first row and the sub electrode line pair in the second row. It functions as a non-connection line 73.
- the second main electrode line 71L is also composed of the sub electrode line pair in the second row and the sub electrode line pair in the third row. It functions as a sensing non-connection line 73 between the electrode wire pair.
- each of the plurality of sensing electrodes 33SP of the third modified example is different from each of the plurality of sensing electrodes 33SP of the second embodiment, and the five main electrode lines 71L connected to one sub electrode line pair.
- the second main electrode line 71 ⁇ / b> L includes a portion that functions as the sensing non-connection line 73. Therefore, each cell 21C includes two drive non-connection lines 63 included in the drive electrode 31DP and one sensing non-connection line 73 included in the sensing electrode 33SP. That is, in each cell 21C, the number of drive non-connection lines 63 included in the drive electrode 31DP is different from the number of sensing non-connection lines 73 included in the sensing electrode 33SP.
- the initial value of the capacitance in each cell 21C is different from the touch sensor electrode 21 in the second embodiment.
- the initial value of the capacitance of each cell 21C is matched to the specifications of the peripheral circuit connected to the touch sensor electrode 21.
- a fourth modification will be described with reference to FIGS.
- the fourth modification is different from the second embodiment described above in the arrangement of the plurality of electrode lines constituting each drive electrode 31DP and the arrangement of the plurality of electrode lines constituting each sensing electrode 33SP. Therefore, in the following, such differences will be described in detail, and detailed description will be omitted by attaching the same reference numerals as those in FIG. 10 to the same components as those in the second embodiment.
- FIG. 14 is a plan view showing the planar structure of the drive electrode 31DP, as in FIG. 10.
- the line widths of the electrode lines are exaggerated for convenience of explaining the arrangement of the electrode lines provided in the drive electrode 31DP.
- FIG. 15 is a plan view showing the planar structure of the sensing electrode 33SP, as in FIG. 11, and FIG. 15 shows the line width of the electrode lines exaggerated for convenience of explaining the arrangement of the electrode lines provided in the sensing electrode 33SP.
- FIG. 15 shows the line width of the electrode lines exaggerated for convenience of explaining the arrangement of the electrode lines provided in the sensing electrode 33SP.
- FIG. 16 is a plan view of the drive electrode 31DP and the sensing electrode 33SP as seen from the direction in which the drive electrode 31DP and the sensing electrode 33SP are stacked, as in FIG.
- the line width of the electrode line provided for the drive electrode 31DP and the line width of the electrode line provided for the sensing electrode 33SP are shown exaggeratedly. Has been.
- the drive electrode 31DP is indicated by a thin line, while the sensing electrode 33SP is indicated by a thick line.
- the plurality of electrode lines in each drive electrode 31DP includes a plurality of sensing electrodes 33SP provided in each of the plurality of sensing electrodes 33SP when viewed from the direction in which the plurality of drive electrodes 31DP and the plurality of sensing electrodes 33SP are stacked.
- a lattice shape is formed together with the electrode lines. That is, the plurality of electrode lines provided in each drive electrode 31DP has a shape that follows a part of the lattice shape, and the plurality of electrode lines provided in each sensing electrode 33SP has a shape that follows the remaining part of the lattice shape.
- the lattice shape is arranged at equal intervals along the first arrangement direction D1, and a plurality of third reference lines that are inclined with respect to the first arrangement direction D1 and the second arrangement direction D2. And a plurality of fourth reference lines orthogonal to the third reference line.
- one drive electrode 31DP is provided with one of a plurality of pads 31P arranged at intervals along the first arrangement direction D1.
- One drive electrode 31DP further includes a plurality of main electrode lines 81L having a linear shape extending along a third extending direction that forms a predetermined facing angle ⁇ 2 with the first arrangement direction D1, and orthogonal to the main electrode lines 81L.
- a plurality of sub-electrode lines 82L having a linear shape extending along the fourth extending direction.
- the facing angle ⁇ 2 is an angle smaller than 90 °.
- One drive electrode 31DP is an example of a first strip electrode extending along the second arrangement direction D2.
- Each of the plurality of drive electrodes 31DP is arranged at intervals along the first arrangement direction D1.
- the main electrode lines 81L adjacent to each other along the first arrangement direction D1 have a third interval S3 along the fourth extending direction and extend along the third extending direction.
- each of the 14 main electrode lines 81L one of which is connected to the pad 31P, is in the middle of extending toward the pad 31P along the third extending direction. It bends and extends to the pad 31P along the second arrangement direction D2.
- two sub-electrode lines 82L adjacent to each other along the second arrangement direction D2 are arranged with a fourth interval S4 along the second arrangement direction D2.
- seven sub electrode lines 82L arranged along the first arrangement direction D1 constitute one sub electrode line group.
- Two sub-electrode line groups adjacent to each other along the second arrangement direction D2 are arranged with a fourth interval S4 along the second arrangement direction D2.
- the sub-electrode line group in the first row, the sub-electrode line group in the second row,... n is an integer of 3 or more).
- each of the six sub-electrode lines 82L other than the sub-electrode line 82L positioned at the right end in the first arrangement direction D1 in the sub-electrode line group in the first row has a fourth extension. It bends in the middle of extending toward the pad 31P along the existing direction, and extends to the pad 31P along the second arrangement direction D2.
- Each of the sub electrode lines 82L included in the sub electrode line group in the first row has two main electrode lines 81L adjacent to each other along the first arrangement direction D1 in a portion extending along the fourth extending direction. Connected to.
- each of the sub-electrode lines 82L included in the sub-electrode line group in the second and subsequent rows faces the three main electrode lines 81L adjacent to each other along the first arrangement direction D1 in the second arrangement direction D2. ing.
- one sub electrode line group faces the 14 main electrode lines 81L adjacent to each other along the first arrangement direction D1 in the second arrangement direction D2.
- the five main electrode lines 81L have a length equal to or longer than the fourth interval S4 along the second arrangement direction D2.
- the k-th row sub-electrode line group and the k + 1-th row sub-electrode line group (k is an integer not smaller than 1 and not larger than n) have a length equal to or longer than the fourth interval S4 along the second arrangement direction D2.
- the five main electrode lines 81L are connected.
- 14 main electrode lines 81L are connected to one pad 31P in the second arrangement direction D2, and two of these 14 main electrode lines 81L are adjacent to each other along the first arrangement direction D1.
- the main electrode line 81L is electrically connected by one sub electrode line 82L.
- the main electrode line 81L positioned at the end in the first arrangement direction D1 the main electrode line 81L positioned at the end in the first arrangement direction D1
- the seventh main electrode line 81L and the eighth main electrode line 81L have a length equal to or longer than the fourth interval S4 along the second arrangement direction.
- the main electrode line 81L located at the end in the first arrangement direction D1 the main electrode line 81L located at the end in the first arrangement direction D1
- the third main electrode line 81L, and the fifth main electrode line 81L The seventh main electrode line 81L and the eighth main electrode line 81L are connected to the sub electrode line group in the second row.
- the 14 main electrode lines 81L face the second row sub-electrode line group in the second arrangement direction D2, and a part of the 14 main electrode lines 81L is the second row sub-electrode line group. Are electrically connected.
- this is also the main electrode line 81L located at the end in the first arrangement direction D1, the third main electrode line 81L,
- the fifth main electrode line 81L, the seventh main electrode line 81L, and the eighth main electrode line 81L have a length equal to or longer than the fourth interval S4 toward the third row sub-electrode line group. Yes.
- the main electrode line 81L positioned at the end of the first arrangement direction D1 and the third main electrode
- the line 81L, the fifth main electrode line 81L, the seventh main electrode line 81L, and the eighth main electrode line 81L are connected to the sub electrode line group in the third row.
- a drive electrode line that is an example of a connection electrode line that is electrically connected to the pad 31P is composed of a plurality of main electrode lines 81L and a plurality of sub electrode lines 82L. Yes.
- the plurality of main electrode lines 81L constituting one drive electrode 31DP include a plurality of drive non-connection lines 83 that are not electrically connected to the pad 31P.
- Each non-drive connection line 83 is sandwiched between two sub electrode line groups adjacent to each other in the second arrangement direction D2 in one drive electrode 31DP.
- Some of the plurality of non-drive connection lines 83 are separated from the sub electrode line group by the two gap portions 84 and are not electrically connected to the pad 31P. On the other hand, in the remaining portion of the plurality of non-drive connection lines 83, one of the two ends is separated from the sub electrode line group by one gap portion 84, and the other is positioned at the end of the drive electrode 31DP. is doing.
- Each gap portion 84 is located at a portion sandwiched between two sub electrode line groups adjacent to each other in the second arrangement direction D2.
- the gap 84 is an example of a first gap.
- the following five main electrode lines 81L are connected to the first row of sub electrode lines and the second row. It functions as a drive non-connection line 83 between the sub electrode line group. That is, the second main electrode line 61L, the fourth main electrode line 61L, the sixth main electrode line 81L, the tenth main electrode line 81L, and the twelfth main electrode line 81L in the first arrangement direction D1 are , Functioning as a drive non-connection line 83.
- the following five main electrode lines 81L include the second row sub-electrode line group and the third row sub-electrode line. It functions as a drive non-connection line 83 between the groups. That is, the second main electrode line 81L, the fourth main electrode line 81L, the sixth main electrode line 81L, the tenth main electrode line 81L, and the twelfth main electrode line 81L in the first arrangement direction D1 are , Functioning as a drive non-connection line 83.
- a drive non-connection line 83 that is not electrically connected to the pad 31P is composed of a plurality of main electrode lines 81L.
- a drive electrode line connected to the pad 31P is configured by a portion of the plurality of main electrode lines 81L excluding the plurality of drive non-connection lines 83 and the plurality of sub electrode lines 82L. Has been.
- one sensing electrode 33SP includes one of a plurality of pads 33P arranged at intervals along the second arrangement direction D2.
- One sensing electrode 33SP further includes a plurality of main electrode lines 91L having a linear shape extending along the second extending direction D2 and the above-described fourth extending direction that forms the opposing angle ⁇ 2, and orthogonal to the main electrode line 91L.
- a plurality of sub-electrode lines 92L having a linear shape extending along the third extending direction.
- One sensing electrode 33SP is an example of a second strip electrode extending along the first arrangement direction D1.
- Each of the plurality of sensing electrodes 33SP is arranged at intervals along the second arrangement direction D2.
- the main electrode lines 91L adjacent to each other along the second arrangement direction D2 have a third interval S3 along the third extending direction and extend along the fourth extending direction.
- each of the 14 main electrode lines 91L whose one of the two ends is connected to the pad 33P is in the middle of extending toward the pad 33P along the fourth extending direction. It bends and extends to the pad 33P along the first arrangement direction D1.
- two sub-electrode lines 92L adjacent to each other along the first arrangement direction D1 are arranged with a fourth interval S4 along the first arrangement direction D1.
- the seven sub electrode lines 92L arranged along the second arrangement direction D2 constitute one sub electrode line group.
- Two sub electrode line groups adjacent to each other along the first arrangement direction D1 are arranged with a fourth interval S4 along the first arrangement direction D1.
- the sub-electrode line group in the first row, the sub-electrode line group in the second row,... m is an integer of 3 or more).
- each of the six sub-electrode lines 92L other than the sub-electrode line 92L positioned at the lower end in the second arrangement direction D2 It bends in the middle of extending toward the pad 33P along the extending direction, and extends to the pad 33P along the first arrangement direction D1.
- each of the six sub-electrode lines 92L other than the sub-electrode line 92L positioned at the upper end extends along the third extending direction.
- the part is connected to two main electrode lines 91L adjacent to each other along the second arrangement direction D2.
- the sub-electrode lines 92L included in the sub-electrode line group in the first row are connected to the three main electrode lines 91L adjacent to each other along the second arrangement direction D2. Connected.
- the sub electrode line 92L positioned at the lower end in the second arrangement direction and the sub electrode line 92L positioned at the upper end are opposed to the three main electrode lines 91L adjacent to each other along the second arrangement direction D2 in the first arrangement direction D1.
- the sub electrode line 92L positioned at the upper end in the second arrangement direction D2 faces the four main electrode lines 91L adjacent to each other along the second arrangement direction D2 in the first arrangement direction D1. ing.
- the sub-electrode line 92L located at the lower end of the second arrangement direction D2 faces two main electrode lines 91L adjacent to each other along the second arrangement direction D2 in the first arrangement direction D1.
- one sub electrode line group faces 15 main electrode lines 91L adjacent to each other along the second arrangement direction D2 in the first arrangement direction D1.
- the four main electrode lines 91L have a length equal to or longer than the fourth interval S4 along the first arrangement direction D1.
- the j-th row sub-electrode line group and the j + 1-th row sub-electrode line group (j is an integer not smaller than 1 and not larger than m) have a length equal to or larger than the fourth interval S4 along the first arrangement direction D1. They are connected by four main electrode lines 91L.
- 15 main electrode lines 91L face one pad 33P in the first arrangement direction D1.
- 15 main electrode lines 91L in the portion excluding one main electrode line 91L located at the upper end in the second arrangement direction D2, two adjacent ones along the second arrangement direction D2
- the main electrode line 91L is electrically connected by one sub electrode line 92L.
- the eighth main electrode line 91L has a length equal to or longer than the fourth interval S4 along the first arrangement direction D1.
- the second main electrode line 91L is connected to the sub-electrode line group in the second row.
- the 15 main electrode lines 91L face the second row sub-electrode line group in the second arrangement direction D2, and a part of these 15 main electrode lines 91L is the second row sub-electrode line group. Are electrically connected.
- this is also the second main electrode line 91L and the fourth main electrode lines 91L, 6 in the second arrangement direction D2.
- the ninth main electrode line 91L and the eighth main electrode line 91L have a length equal to or longer than the fourth interval S4 toward the third row sub-electrode line group.
- the sixth main electrode line 91L and the eighth main electrode line 91L are connected to the sub-electrode line group in the third row.
- the sensing electrode line which is an example of the connection electrode line electrically connected to the pad 33P, is composed of a plurality of main electrode lines 91L and a plurality of sub electrode lines 92L. Yes.
- the plurality of main electrode lines 91L constituting one sensing electrode 33SP include a plurality of sensing non-connection lines 93 that are not electrically connected to the pad 33P.
- Each sensing non-connection line 93 is sandwiched between two sub electrode line groups adjacent to each other in the first arrangement direction D1 in one sensing electrode 33SP.
- Some of the plurality of sensing non-connection lines 93 are separated from the sub electrode line group by the two gap portions 94 and are not electrically connected to the pad 33P.
- one of the two ends is separated from the sub electrode line group by one gap portion 94, and the other is positioned at the end of the sensing electrode 33SP. is doing.
- Each gap portion 94 is located in a portion sandwiched between two sub electrode line groups adjacent to each other in the first arrangement direction D1.
- the gap portion 94 is an example of a second gap portion.
- the following 6 main electrode lines 91L include the first row of sub electrode lines and the second row of sub electrode lines 91L. It functions as a sensing non-connection line 93 between the electrode wire group. That is, the third main electrode line 91L, the fifth main electrode line 91L, the seventh main electrode line 91L, the ninth main electrode line 91L, the eleventh main electrode line 91L in the second arrangement direction D2, and The thirteenth main electrode line 91L functions as a sensing non-connection line 93.
- the following six main electrode lines 81L include the sub electrode line group in the second row and the sub electrode line in the third row. It functions as a sensing disconnection line 93 between the groups. That is, the third main electrode line 91L, the fifth main electrode line 91L, the seventh main electrode line 91L, the ninth main electrode line 91L, the eleventh main electrode line 91L in the second arrangement direction D2, and The thirteenth main electrode line 91L functions as a sensing non-connection line 93.
- the setting of the sensing non-connection line 93 in the main electrode line 91L is repeated for each row of the sub electrode line group along the first arrangement direction D1. And as the white line shows in FIG. 15, the sensing non-connection line 93 that is not electrically connected to the pad 33P is composed of a plurality of main electrode lines 91L.
- a sensing electrode line connected to the pad 33P is configured by a portion of the plurality of main electrode lines 91L excluding the plurality of sensing non-connection lines 93 and the plurality of sub electrode lines 92L. Has been.
- the plurality of drive electrodes 31DP and the plurality of sensing electrodes 33SP are directions in which the plurality of drive electrodes 31DP and the plurality of sensing electrodes 33SP are stacked, and the transparent dielectric substrate 33 and A lattice shape is formed when viewed from the opposite planar view direction.
- each of the plurality of main electrode lines 81L constituting one drive electrode 31DP is one of the plurality of main electrode lines 91L included in each sensing electrode 33SP when viewed from the plan view direction facing the transparent dielectric substrate 33.
- Cross three-dimensionally As a result, a lattice shape is formed in the portions excluding each of the drive electrodes 31DP adjacent to each other in the first arrangement direction D1 and each of the sensing electrodes 33SP adjacent to each other in the second arrangement direction D2.
- each of the plurality of sub electrode lines 82L is positioned between the sensing electrodes 33SP adjacent to each other in the second arrangement direction D2.
- Each of the plurality of sub electrode lines 82L fills the space between the adjacent main electrode lines 91L along the fourth extending direction in the plurality of sensing electrodes 33SP.
- a lattice shape is formed in each of the sensing electrodes 33SP adjacent to each other in the second arrangement direction D2.
- each of the plurality of sub electrode lines 92L constituting one sensing electrode 33SP is positioned between the drive electrodes 31DP adjacent to each other in the first arrangement direction D1.
- Each of the plurality of sub electrode lines 92L fills the space between adjacent main electrode lines 81L along the third extending direction in the plurality of drive electrodes 31DP. As a result, a lattice shape is formed between the drive electrodes 31DP adjacent to each other in the first arrangement direction D1.
- a plurality of cells 21 ⁇ / b> C are set in the touch sensor electrode 21.
- Each cell 21 ⁇ / b> C is a region where one drive electrode 31 ⁇ / b> DP and one sensing electrode 33 ⁇ / b> SP intersect three-dimensionally in plan view facing the transparent dielectric substrate 33. Therefore, in each of the plurality of drive electrodes 31DP, the plurality of cells 21C are arranged along the second arrangement direction D2 orthogonal to the first arrangement direction D1 in which the drive electrodes 31DP are arranged. On the other hand, in each of the plurality of sensing electrodes 33SP, the plurality of cells 21C are arranged along the first arrangement direction D1 orthogonal to the second arrangement direction D2 in which the sensing electrodes 33SP are arranged. Each cell 21C is located inside the display surface 10S.
- the cell 21C closest to the pad 31P for each drive electrode 31DP is the closest cell 21Cd.
- the group of main electrode lines 81L constituting each drive electrode 31DP includes a drive non-connection line 83 that is not connected to the pad 31P for each cell 21C.
- the pad gap portion 84a is the gap portion 84 closest to the pad 31P on each main electrode line 81L, and between the closest cell 21Cd and the pad 31P.
- the gap 84 is located between them.
- the gap portions 84 other than the pad gap portion 84a, each of the gap portions 84 positioned on the opposite side of the pad 31P with respect to each sub electrode line 82L in the second arrangement direction D2, , Located between the two cells 21C adjacent to each other in the second arrangement direction D2.
- the cell 21C closest to the pad 33P for each sensing electrode 33SP is the closest cell 21Cs.
- the group of main electrode lines 91L constituting each sensing electrode 33SP includes a sensing non-connection line 93 that is not connected to the pad 33P for each cell 21C.
- the pad gap 94a is the gap closest to the pad 33P on each main electrode line 91L and between the nearest cell 21Cs and the pad 33P. It is the gap part 94 located in this.
- each of the gap portions 94 other than the pad gap portion 94a which is located on the side opposite to the pad 33P with respect to each sub electrode line 92L in the first arrangement direction D1, , Located between two cells 21C adjacent to each other in the first arrangement direction.
- each of the pad gaps 64a located inside the nearest cell 21Cd is located between the pad 31P and the nearest cell 21Cd. May be.
- each of the pad gaps 64a located between the cell 21C and the pad 31P may be located inside the nearest cell 21Cd. .
- the gap portion 64 located inside the cell 21C may be located outside the cell 21C.
- each of the plurality of pad gaps 74a in each sensing electrode 33SP may be located between the pad 33P and the nearest cell 21Cs.
- each of the plurality of gaps 74 other than the pad gap 74a in each sensing electrode 33SP may be located between two cells 21C adjacent to each other in the first arrangement direction D1.
- each drive electrode 31DP includes only the drive non-connection line 63 configured by the second main electrode line 61L in the first arrangement direction D1, and each sensing electrode 33SP is provided in the second arrangement direction D2.
- a configuration including only the sensing non-connection line 73 configured by the main electrode line 71L positioned at the end of the sensor may be employed.
- each drive electrode 31DP includes only the drive non-connection line 63 configured by the third main electrode line 61L in the first arrangement direction D1, and each sensing electrode 33SP is positioned at the end of the second arrangement direction D2.
- a configuration including only the sensing non-connection line 73 configured by the main electrode line 71L may be employed.
- each drive electrode 31DP includes only the drive non-connection line 63 configured by the third main electrode line 61L in the first arrangement direction D1, and each sensing electrode 33SP is provided in the second arrangement direction D2.
- a configuration including only the non-sensing connection line 73 configured by the electrode line 71L may be employed.
- each drive electrode 31DP includes only the drive non-connection line 63 configured by the third main electrode line 61L in the first arrangement direction D1, and each sensing electrode 33SP is provided in the second arrangement direction D2.
- a configuration including only the non-sensing connection line 73 configured by the electrode line 71L may be employed.
- each drive electrode 31DP and each sensing electrode 33SP may include a non-connection line. If only each drive electrode 31DP is configured to include a non-connection line, each drive electrode 31DP may include at least one of the two drive non-connection lines 63 included in one cell 21C. Further, if only each sensing electrode 33SP includes a non-connection line, each sensing electrode 33SP may include at least one of the two sensing non-connection lines 73 included in one cell 21C. .
- each sensing electrode 33SP is not the sensing non-connection line 73 configured by the second main electrode line 71L in the second arrangement direction D2 as a non-connection line, but the first in the second arrangement direction D2.
- the structure provided with the non-sensing connection line 73 comprised by the main electrode line 71L may be sufficient.
- each drive electrode 31DP has a drive non-connection line 63 constituted by the first main electrode line 61L in the first arrangement direction D1 and a drive constituted by the second main electrode line 61L.
- a configuration including any one of the non-connection lines 63 may be adopted.
- each sensing electrode 33SP should just be the same structure as each sensing electrode 33SP in 2nd Embodiment.
- the positions of the plurality of gaps 64 and the positions of the plurality of gaps 74 are different from those in the third modification, as in the modification of the second embodiment described above. Is possible.
- each of the plurality of pad gaps 84a in each drive electrode 31DP may be located inside the nearest cell 21Cd.
- each of the plurality of pad gaps 94a in each sensing electrode 33SP may be located inside the closest cell 21Cs.
- each of the plurality of gaps 84 positioned between the cells 21C adjacent to each other in the second arrangement direction D2 in each drive electrode 31DP is defined as a pad 31P with respect to each gap 84. It may be located inside the cell 21C located on the opposite side.
- each of the plurality of gaps 94 located between the cells 21C adjacent to each other in the first arrangement direction D1 in each sensing electrode 33SP is defined as a pad 33P with respect to each gap 94. It may be located inside the cell 21C located on the opposite side.
- each drive electrode 31DP and each sensing electrode 33SP may have at least one unconnected line. In the fourth modification, only one of each drive electrode 31DP and each sensing electrode 33SP may include a non-connection line.
- the facing angle ⁇ 1 of the drive electrode 31DP and the facing angle ⁇ 1 of the sensing electrode 33SP may be different from each other.
- the facing angle ⁇ 2 of the drive electrode 31DP and the facing angle ⁇ 2 of the sensing electrode 33SP may be different from each other.
- the transparent substrate 31 and the transparent adhesive layer 32 may be omitted from the touch sensor electrode 21 constituting the touch panel 20.
- one surface facing the display panel 10 among the surfaces of the transparent dielectric substrate 33 is set as the drive surface 31S, and the drive electrode 31DP may be positioned on the drive surface 31S.
- the sensing electrode 33SP should just be located in the surface which opposes the drive surface 31S in the transparent dielectric substrate 33.
- the pad 31P and the electrode line 31L constituting the drive electrode 31DP are formed by patterning one thin film formed on the drive surface 31S, for example.
- the initial value of the capacitance in each cell 21C is influenced by the transparent dielectric substrate 33.
- the initial value of the capacitance in each cell 21C is different from the configuration in which the plurality of base materials are positioned between the plurality of drive electrodes 31DP and the plurality of sensing electrodes 33SP.
- the initial value of the capacitance in each cell 21C becomes a value suitable for a predetermined specification in the peripheral circuit.
- the drive electrode 31 DP, the transparent substrate 31, the transparent adhesive layer 32, the transparent dielectric substrate 33, the sensing electrode 33 SP, and the transparent adhesive layer 23 are sequentially arranged from the components close to the display panel 10.
- the cover layer 22 may be located.
- the pad 31P and the electrode line 31L that configure the drive electrode 31DP are formed on the drive surface 31S that is one surface of the transparent substrate 31, and the pad 33P and the electrode line 33L that configure the sensing electrode 33SP. Is formed on the sensing surface 33S, which is one surface of the transparent dielectric substrate 33. Then, the back surface of the transparent substrate 31 opposite to the drive surface 31S and the back surface of the transparent dielectric substrate 33 opposite to the sensing surface 33S are bonded by the transparent adhesive layer 32. That is, the back surface of the transparent dielectric substrate 33 overlaps the back surface of the transparent substrate 31. In such a configuration, the transparent substrate 31 and the transparent dielectric substrate 33 constitute a transparent dielectric substrate sandwiched between the plurality of drive electrodes 31DP and the plurality of sensing electrodes 33SP.
- the initial value of the capacitance in each cell 21C is two sheets Influenced by the substrate. Therefore, the initial value of the capacitance in each cell 21C is different from the configuration in which one substrate is located between the plurality of drive electrodes 31DP and the plurality of sensing electrodes 33SP. As a result, the initial value of the capacitance in each cell 21C becomes a value suitable for a predetermined specification in the peripheral circuit.
- the touch panel 20 and the display panel 10 may not be formed separately, and the touch panel 20 may be formed integrally with the display panel 10.
- a plurality of drive electrodes 31DP are positioned on the TFT layer 13, while a plurality of sensing electrodes 33SP are positioned between the color filter substrate 16 and the upper polarizing plate 17.
- An in-cell configuration can be adopted.
- an on-cell configuration in which the touch sensor electrode 21 is located between the color filter substrate 16 and the upper polarizing plate 17 may be employed.
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Abstract
Description
図1から図7を参照して、タッチセンサ用電極、タッチパネル、および、表示装置を具体化した第1実施形態を説明する。以下では、表示装置の構成、タッチパネルの電気的構成、ドライブ電極の構成、センシング電極の構成、タッチセンサ用電極の構成、および、タッチセンサ用電極の作用を順番に説明する。
図1を参照して表示装置の構成を説明する。なお、図1では、ドライブ面に形成されるドライブ電極と、センシング面に形成されるセンシング電極との構成を説明する便宜上、ドライブ電極、および、センシング電極が誇張して示されている。
すなわち、図2が示すように、タッチパネル20では、透明基板31、ドライブ電極31DP、透明接着層32、透明誘電体基板33、センシング電極33SP、透明接着層23、カバー層22が、この順番で積層され、このうち、透明基板31が表示パネル10の最も近くに位置している。透明誘電体基板33は、透明基板31とドライブ電極31DPとから構成される第1電極層と、センシング電極33SPから構成される第2電極層との間に位置している。すなわち、透明誘電体基板33は、複数のドライブ電極31DPと、複数のセンシング電極33SPとに挟まれている。
タッチパネル20において、複数の電極線31Lと、複数のパッド31Pとは、ドライブ面31Sに形成された1つの薄膜が、マスクを介してエッチングされることによって同時に形成されてもよい。あるいは、複数の電極線31Lと、複数のパッド31Pとは、各別の工程によって相互に異なる材料から形成されてもよい。また、複数の電極線31Lと、複数のパッド31Pとは、透明基板31とは異なる他の基材に形成され、複数の電極線31Lと、複数のパッド31Pとが、他の基材から透明基板31に貼り付けられることによって形成されてもよい。
図3を参照して、タッチパネル20の電気的構成を説明する。なお、以下では、静電容量式のタッチパネル20の一例として、相互容量方式のタッチパネル20における電気的構成を説明する。
なお、タッチパネル20は、上述した相互容量方式のタッチパネル20に限らず、自己容量方式のタッチパネルであってもよい。
図4を参照してドライブ電極の構成を説明する。図4は、ドライブ電極31DPの平面構造を示す平面図であり、図4では、電極線31Lの配置を説明する便宜上、電極線31Lの線幅が誇張して示されている。
図5を参照してセンシング電極の構成を説明する。図5は、ドライブ電極31DPとセンシング電極33SPとをドライブ電極31DPとセンシング電極33SPとの積層される方向から見た平面図である。なお、図5では、ドライブ電極31DP、および、センシング電極33SPの配置を説明する便宜上、電極線31Lの線幅、および、電極線33Lの線幅が誇張して示されている。
図5を参照してタッチセンサ用電極21の構成の一部を説明する。
図5が示すように、タッチセンサ用電極21には、複数のセル21Cが設定されている。各セル21Cは、透明誘電体基板33と対向する平面視において、1つのドライブ電極31DPを構成する第1線群と、1つのセンシング電極33SPを構成する第2線群とが、立体的に交差する領域である。そのため、複数のドライブ電極31DPの各々において、複数のセル21Cは、ドライブ電極31DPの並ぶ第1配列方向D1と直交する第2配列方向D2に沿って並ぶ。これに対して、複数のセンシング電極33SPの各々において、複数のセル21Cは、センシング電極33SPの並ぶ第2配列方向D2と直交する第1配列方向D1に沿って並ぶ。各セル21Cは、表示面10Sの内側に位置している。
図6および図7を参照してタッチセンサ用電極の作用を説明する。なお、図6および図7では、タッチセンサ用電極の作用を説明する便宜上、ドライブ電極の形状、および、センシング電極の形状が模式的に示されている。
ところで、各ドライブ電極を構成する複数の電極線が並ぶ方向と、各センシング電極を構成する複数の電極線が並ぶ方向とは、一般に相互に直交する。一方で、表示装置は、格子形状を有するブラックマトリクスを備えているため、複数の電極線が形成する格子形状と、ブラックマトリクスの有する格子形状との間のずれによって、干渉縞が形成されてしまう。そこで、上述した構成では、各ドライブ電極31DPを構成する複数の電極線31Lの各々、および、各センシング電極33SPを構成する複数の電極線33Lの各々が、折れ線形状を有することで、表示装置における干渉縞の発生が抑えられている。
(1)各ドライブ電極31DPを構成する電極線31Lのうち、パッド31Pに接続していないドライブ非接続線42は、周辺回路によって測定される静電容量を各センシング電極線51との間にほぼ形成しない。また、各センシング電極33SPを構成する電極線33Lのうち、パッド33Pと接続していないセンシング非接続線52は、周辺回路によって測定される静電容量を各ドライブ電極線41との間にほぼ形成しない。
(2)複数のドライブ電極31DP、および、複数のセンシング電極33SPにおいて、静電容量を形成しない部分が規則的に並んでいる。そのため、タッチセンサ用電極21が形成された領域の内部にて、静電容量を形成しない領域が偏って位置することが抑えられ、静電容量の変化が測定される位置に偏りが生じにくくなる。それゆえに、タッチセンサによる検出に偏りが生じにくくなる。すなわち、タッチセンサの検出の感度にばらつきが生じることが抑えられる。
[第1変形例]
図8を参照して第1変形例を説明する。第1変形例は、上述した第1実施形態と比べて、複数のドライブ電極31DPの中で、第1配列方向D1におけるパッド間隙部の位置が異なる。そのため、以下では、こうした相違点を詳しく説明し、第1実施形態と同等の構成には、図5と同じ符号を付すことで、詳細な説明を省略する。
(4)1つのドライブ電極31DPのドライブ非接続線42の数と、1つのセンシング電極33SPのセンシング非接続線52の数とが相互に異なる。これにより、1つのドライブ電極31DPのドライブ非接続線42の数と、1つのセンシング電極33SPのセンシング非接続線52の数とが相互に同じである構成と比べて、各セル21Cの静電容量の値が異なる。それゆえに、ドライブ非接続線42の数とセンシング非接続線52の数とが相互に等しい構成での静電容量の初期値を至適範囲とする周辺回路とは異なる周辺回路の仕様であれば、各セル21Cにおける静電容量の初期値が、測定に適した範囲に含まれやすくなる。
図9を参照して第2変形例を説明する。第2変形例は、上述した第1実施形態と比べて、複数のドライブ電極31DPの各々と、複数のセンシング電極33SPの各々とが、上述したパッド間隙部以外の間隙部を有する点が異なる。そのため、以下では、こうした相違点を詳しく説明し、第1実施形態と同等の構成には、図5と同じ符号を付すことで、詳細な説明を省略する。
(5)各セル21Cにおける寄生容量の大きさがほぼ等しく、かつ、各セル21Cにおける寄生容量が相互に関わり難くなるため、寄生容量を含む各セル21Cにおける静電容量の大きさがほぼ等しくなる。
上述した第1実施形態、第1変形例、および、第2変形例の各々は、さらに、以下のように適宜変更して実施することもできる。
・各ドライブ電極31DPは9本の電極線31Lを備え、各センシング電極33SPは9本の電極線33Lを備えている。これに限らず、各ドライブ電極31DPは、2本以上8本以下の電極線31Lを備える構成でもよいし、10本以上の電極線31Lを備える構成でもよい。また、各センシング電極33SPは、2本以上8本以下の電極線33Lを備える構成でもよいし、10本以状の電極線33Lを備える構成でもよい。
図10および図11を参照して、タッチセンサ用電極、タッチパネル、および、表示装置を具体化した第2実施形態を説明する。第2実施形態は、上述した第1実施形態と比べて、各ドライブ電極31DPの構成、および、各センシング電極33SPの構成が異なっている。そのため、以下では、こうした相違点を詳しく説明し、第1実施形態と同等の構成には、図5などと同じ符号を付すことで、詳細な説明を省略する。また、以下では、ドライブ電極の構成、および、センシング電極の構成を順番に説明する。
図10を参照してドライブ電極の構成を説明する。図10は、ドライブ電極31DPの平面構造を示す平面図であり、図10では、ドライブ電極31DPの備える電極線の配置を説明する便宜上、電極線の線幅が誇張して示されている。
図11を参照してセンシング電極の構成を説明する。図11は、センシング電極33SPの平面構造を示す平面図であり、図11では、センシング電極33SPの備える電極線の配置を説明する便宜上、電極線の線幅が誇張して示されている。
図12を参照してタッチセンサ用電極21の構成の一部を説明する。図12は、ドライブ電極31DPとセンシング電極33SPとをドライブ電極31DPとセンシング電極33SPとの積層される方向から見た平面図である。なお、図12では、ドライブ電極31DP、および、センシング電極33SPの配置を説明する便宜上、ドライブ電極31DPの備える電極線の線幅、および、センシング電極33SPの備える電極線の線幅が誇張して示されている。さらに、図12では、ドライブ電極31DPと、センシング電極33SPとの区別を簡単にするために、ドライブ電極31DPが細線で示される一方、センシング電極33SPが太線で示されている。
(7)各セル21Cに含まれる主電極線の群が非接続線を含むことで、主電極線の全てが非接続線を含まない構成と比べて、複数のセル21Cの各々における静電容量の初期値が小さくなる。そして、非接続線の本数が減るような設計の変更や、非接続線の本数が増えるような設計の変更によって、静電容量の初期値を至適な範囲に合わせることが可能である。それゆえに、相互に異なる静電容量の至適範囲に対して、電極線の幅や電極線の本数の変更を強いるような構造上の変更を軽減することができる。
[第3変形例]
図13を参照して第3変形例を説明する。第3変形例は、上述した第2実施形態と比べて、複数のセンシング電極33SPの各々における間隙部の数が異なる。そのため、以下では、こうした相違点を詳しく説明し、第2実施形態と同等の構成には、図12と同じ符号を付すことで、詳細な説明を省略する。
1つのセンシング電極33SPを構成する複数の主電極線71Lは、パッド33Pに接続していない複数のセンシング非接続線73を含んでいる。各センシング非接続線73は、1つのセンシング電極33SPの中で、第1配列方向D1にて相互に隣り合う2つの副電極線対に挟まれている。
このように、第3変形例の複数のセンシング電極33SPの各々は、第2実施形態の複数のセンシング電極33SPの各々とは異なり、1つの副電極線対に接続する5本の主電極線71Lの中で、2番目の主電極線71Lのみがセンシング非接続線73として機能する部分を含んでいる。そのため、各セル21Cには、ドライブ電極31DPの備える2本のドライブ非接続線63と、センシング電極33SPの備える1本のセンシング非接続線73とが含まれる。つまり、各セル21Cにおいて、ドライブ電極31DPの備えるドライブ非接続線63の数と、センシング電極33SPの備えるセンシング非接続線73の数とが相互に異なる。
[第4変形例]
図14から図16を参照して第4変形例を説明する。第4変形例は、上述した第2実施形態と比べて、各ドライブ電極31DPを構成する複数の電極線の配置、および、各センシング電極33SPを構成する複数の電極線の配置が異なる。そのため、以下では、こうした相違点を詳しく説明し、第2実施形態と同等の構成には、図10などと同じ符号を付すことで、詳細な説明を省略する。
[他の変形例]
上述した第2実施形態、第3変形例、および、第4変形例の各々は、さらに、以下のように適宜変更して実施することもできる。
・第2実施形態において、各センシング電極33SPにおけるパッド間隙部74a以外の複数の間隙部74の各々は、第1配列方向D1において相互に隣り合う2つのセル21Cの間に位置してもよい。
・第4変形例において、各センシング電極33SPにおける複数のパッド間隙部94aの各々は、最近接セル21Csの内部に位置してもよい。
・第4変形例において、各ドライブ電極31DP、および、各センシング電極33SPの一方のみが、非接続線を備える構成でもよい。
(8)複数のドライブ電極31DPと、複数のセンシング電極33SPとの間に、透明誘電体基板33が位置するため、各セル21Cにおける静電容量の初期値は、透明誘電体基板33によって影響される。それゆえに、各セル21Cにおける静電容量の初期値は、複数のドライブ電極31DPと複数のセンシング電極33SPとの間に複数の基材が位置する構成とは、異なる値になる。結果として、各セル21Cにおける静電容量の初期値は、周辺回路における所定の仕様に対して適した値になる。
(9)複数のドライブ電極31DPと、複数のセンシング電極33SPとの間に、透明基板31と透明誘電体基板33とが位置するため、各セル21Cにおける静電容量の初期値は、2枚の基材によって影響される。それゆえに、各セル21Cにおける静電容量の初期値は、複数のドライブ電極31DPと複数のセンシング電極33SPとの間に1枚の基材が位置する構成とは、異なる値になる。結果として、各セル21Cにおける静電容量の初期値は、周辺回路における所定の仕様に適した値になる。
Claims (17)
- 第1配列方向に沿って間隔を空けて並ぶ複数の第1帯状電極を有する第1電極層であって、複数の前記第1帯状電極の各々が、第1パッドと、複数の第1電極線を含む第1線群とを含み、複数の前記第1パッドが前記第1配列方向に沿って間隔を空けて並び、各第1線群の前記第1電極線が対応する前記第1パッドに向けて延びる形状を有する、前記第1電極層と、
前記第1配列方向と直交する第2配列方向に沿って間隔を空けて並ぶ複数の第2帯状電極を有する第2電極層であって、複数の前記第2帯状電極の各々が、第2パッドと、複数の第2電極線を含む第2線群とを含み、複数の前記第2パッドが前記第2配列方向に沿って間隔を空けて並び、各第2線群の前記第2電極線が対応する前記第2パッドに向けて延びる形状を有する、前記第2電極層と、
前記第1電極層と前記第2電極層との間に位置する透明誘電体基板と、を備え、
前記透明誘電体基板と対向する平面視において、1つの前記第1線群と1つの前記第2線群との立体的に交差する領域が1つのセルであり、前記セルが、複数の前記第1帯状電極の各々において前記第2配列方向に沿って並び、かつ、複数の前記第2帯状電極の各々において前記第1配列方向に沿って並び、
前記第1帯状電極の各々において前記第1パッドに最も近接する前記セルが第1最近接セルであり、前記第1線群は、前記第1パッドに接続しない第1非接続線と、前記第1パッドに接続する第1接続線とを前記第1最近接セルに含む、
タッチセンサ用電極。 - 前記第2帯状電極の各々において前記第2パッドに最も近接するセルが第2最近接セルであり、前記第2線群は、前記第2パッドに接続しない第2非接続線と、前記第2パッドに接続している第2接続線とを前記第2最近接セルに含む、
請求項1に記載のタッチセンサ用電極。 - 前記第1帯状電極の各々は、
前記第1パッドと、前記第1非接続線の2つの端部のうちで前記第1パッドに近い端部との間、および、前記第1最近接セルの内部の少なくとも一方に、第1間隙部を有する、
請求項1または2に記載のタッチセンサ用電極。 - 前記第2帯状電極の各々は、
前記第2パッドと、前記第2非接続線の2つの端部のうちで前記第2パッドに近い端部との間、および、前記第2最近接セルの内部の少なくとも一方に、第2間隙部を有する
請求項2に記載のタッチセンサ用電極。 - 前記第1帯状電極の各々は、
前記第1パッドと、前記第1非接続線の前記第1パッドに近い端部との間に前記第1間隙部を有し、
前記第1間隙部が、前記第1配列方向において規則的に位置している、
請求項3に記載のタッチセンサ用電極。 - 前記第2帯状電極の各々は、
前記第2パッドと、前記第2非接続線の前記第2パッドに近い端部との間に前記第2間隙部を有し、
前記第2間隙部が、前記第2配列方向において規則的に位置している、
請求項4に記載のタッチセンサ用電極。 - 前記第1帯状電極の各々における前記第1電極線の数と、前記第2帯状電極の各々における前記第2電極線の数とが相互に等しく、
複数の前記セルの各々では、前記第1帯状電極が含む前記第1非接続線の数と、前記第2帯状電極が含む前記第2非接続線の数とが相互に等しい、
請求項2に記載のタッチセンサ用電極。 - 前記第1帯状電極の各々における前記第1電極線の数と、前記第2帯状電極の各々における前記第2電極線の数とが相互に等しく、
複数の前記セルの各々では、前記第1帯状電極が含む前記第1非接続線の数と、前記第2帯状電極が含む前記第2非接続線の数とが相互に異なる、
請求項2に記載のタッチセンサ用電極。 - 第1配列方向に沿って間隔を空けて並ぶ複数の第1帯状電極を有する第1電極層であって、複数の前記第1帯状電極の各々は、第1パッドと、前記第1パッドと90°よりも小さい対向角度を形成する複数の第1主電極線の群と、前記第1主電極線と直交して前記複数の第1主電極線同士を繋ぐ複数の第1副電極線の群とを含む、前記第1電極層と、
前記第1配列方向と直交する第2配列方向に沿って間隔を空けて並ぶ複数の第2帯状電極を含む第2電極層であって、複数の前記第2帯状電極の各々は、第2パッドと、前記第2パッドと90°よりも小さい対向角度を形成する複数の第2主電極線の群と、前記第2主電極線と直交して前記複数の第2主電極線同士を繋ぐ複数の第2副電極線の群とを含む、前記第2電極層と、
前記第1電極層と前記第2電極層との間に位置する透明誘電体基板と、を備え、
前記透明誘電体基板と対向する平面視において、1つの前記第1主電極線の群と、1つの前記第2主電極線の群との立体的に交差する領域が1つのセルであり、前記セルが、複数の前記第1帯状電極の各々において前記第2配列方向に沿って並び、かつ、複数の前記第2帯状電極の各々において前記第1配列方向に沿って並び、
前記複数のセルの各々に含まれる前記第1主電極線の群は、前記第1パッドに接続していない第1非接続線を含む
タッチセンサ用電極。 - 前記複数のセルの各々に含まれる前記第2主電極線の群は、前記第2パッドに接続していない第2非接続線を含む
請求項9に記載のタッチセンサ用電極。 - 前記第1帯状電極の各々において、
複数の前記第1主電極線の少なくとも一部は、各々、2つの第1間隙部によって他の部分から切り離された第1非接続線を少なくとも1つ有し、
複数の前記第1副電極線は、前記第2配列方向において所定の間隔を空けて位置し、
各第1非接続線は、前記第2配列方向にて相互に隣り合う2つの前記第1副電極線に挟まれる領域に、それら2つの第1副電極線から前記第1間隙部を隔てて位置している
請求項9または10に記載のタッチセンサ用電極。 - 前記第2帯状電極の各々において、
複数の前記第2主電極線の少なくとも一部は、各々、2つの第2間隙部によって他の部分から切り離された第2非接続線を少なくとも1つ有し、
複数の前記第2副電極線は、前記第1配列方向において所定の間隔を空けて位置し、
各第2非接続線は、前記第1配列方向にて相互に隣り合う2つの前記第2副電極線に挟まれる領域に、それら2つの第2副電極線から前記第2間隙部を隔てて位置している
請求項10に記載のタッチセンサ用電極。 - 前記第1電極層は、複数の前記第1帯状電極が位置する表面を有した第1基材を備え、
前記第2電極層は、複数の前記第2帯状電極が位置する表面を有した第2基材を備え、
前記第1基材の表面に、前記第2基材の裏面が重なり、
前記透明誘電体基板は、前記第2基材である
請求項1から12のいずれか一項に記載のタッチセンサ用電極。 - 前記透明誘電体基板は、1つの基板から構成されている
請求項1から12のいずれか一項に記載のタッチセンサ用電極。 - 前記第1電極層は、複数の前記第1帯状電極が位置する表面を有した第1基材を備え、
前記第2電極層は、複数の前記第2帯状電極が位置する表面を有した第2基材を備え、
前記第1基材の裏面の上に、前記第2基材の裏面が重なり、
前記透明誘電体基板は、前記第1基材、および、前記第2基材を含む
請求項1から12のいずれか一項に記載のタッチセンサ用電極。 - 複数の第1帯状電極と、複数の第2帯状電極と、前記第1帯状電極と前記第2帯状電極とに挟まれる透明誘電体基板と、を備えるタッチセンサ用電極と、
前記タッチセンサ用電極を覆うカバー層と、
前記第1帯状電極と前記第2帯状電極との間の静電容量を測定する周辺回路と、を備え、
前記タッチセンサ用電極は、請求項1から15のいずれか一項に記載のタッチセンサ用電極である
タッチパネル。 - 情報を表示する表示パネルと、
タッチパネルを駆動する駆動回路と、
前記表示パネルの表示する前記情報を透過する前記タッチパネルと、を備え、
前記タッチパネルは、請求項16に記載のタッチパネルである
表示装置。
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CN105760032B (zh) * | 2016-01-29 | 2019-04-05 | 上海中航光电子有限公司 | 一种触控显示面板及其制造方法 |
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JP2015191406A (ja) | 2015-11-02 |
US9857931B2 (en) | 2018-01-02 |
PT2990916T (pt) | 2020-04-08 |
US20160320879A1 (en) | 2016-11-03 |
ES2783275T3 (es) | 2020-09-17 |
CN105393196A (zh) | 2016-03-09 |
EP2990916A1 (en) | 2016-03-02 |
KR101887925B1 (ko) | 2018-08-14 |
TWI629630B (zh) | 2018-07-11 |
CN105393196B (zh) | 2018-09-11 |
EP2990916A4 (en) | 2017-03-01 |
EP2990916B1 (en) | 2020-02-26 |
JP6225793B2 (ja) | 2017-11-08 |
KR20160051832A (ko) | 2016-05-11 |
TW201543322A (zh) | 2015-11-16 |
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