JP6806876B2 - Production method of printed wiring, touch panel and touch panel production method - Google Patents

Description

The present invention relates to a method for producing printed wiring, and further relates to a method for producing a touch panel and a touch panel on which a conductor layer is formed by printing.

In recent years, printing methods that are excellent in productivity and advantageous in terms of manufacturing cost have been used for forming electrode patterns and wiring patterns of various electronic devices such as touch panels, membrane switches, and liquid crystal displays. In particular, gravure offset printing is attracting attention as being suitable for forming fine patterns.

In gravure offset printing, a gravure plate in which recesses corresponding to a desired printing pattern are formed, a doctor blade that fills the recesses of the gravure plate with ink, and a blanket that rotates while contacting the gravure plate and receives ink are used. Be done. The ink transferred to the blanket is transferred to the print target, whereby a desired print pattern is printed on the print target.

The cutting edge of the doctor blade is pressed against the gravure plate at the required pressure, and slides relative to the gravure plate to fill the recesses of the gravure plate with ink and scrape off excess ink on the surface of the gravure plate (squeezing). ), For example, when the extending direction of the recess of the print pattern formed on the gravure plate and the direction (arrangement direction) of the doctor blade match, the tip of the doctor blade falls into the recess. Can occur.

When the doctor blade is depressed in this way, uneven scratching or a part of the ink in the recess may be scraped off, which causes printing defects such as non-transfer and poor shape.

Patent Document 1 describes a method (inking method) for avoiding printing defects caused by such a depression of the doctor blade. 8 and 9 show a state in which inking is performed and a device configuration used for carrying out inking described in Patent Document 1.

In FIG. 9, 11 is a base, 12 is a linear guide, 13 is a moving table capable of traveling (reciprocating) along the linear guide 12, and an angle can be changed (turned) on the moving table 13 in a horizontal plane. An alignment mechanism 14 is provided, and a plate fixing stage 15 is provided on the alignment mechanism 14. The plate fixing stage 15 is designed to hold a flat plate (gravure plate) 16. When the plate 16 moves along the linear guide 12 of the moving table 13, the plate surface of the plate 16 is brought into contact with the blade (doctor blade) 17 extending in the horizontal direction orthogonal to the longitudinal direction of the linear guide 12 from above. On the other hand, the blade 17 is relatively slid to perform inking.

In Patent Document 1, at the time of inking, first, the print pattern 18 of the plate 16 is divided into a plurality of parts in the moving direction (X direction) at the time of inking of the moving table 13 to set a divided area. In FIG. 8, the divided regions 18a and 18b divided into two are set, and the main groove pattern direction (direction in which the angles of the plate grooves most coincide with each other) 19a for the plate grooves provided in the divided regions 18a and 18b, 19b is calculated for each of the divided regions 18a and 18b based on data such as the groove angle (direction in which the plate groove extends), the number of grooves, and the groove width.

Then, when the blade 17 is slid and inking is performed, when the blade 17 comes into contact with the divided region 18a as shown in FIG. 8A, the main groove pattern direction 19a is at an angle larger than 0 degrees with the longitudinal direction of the blade 17. The alignment mechanism 14 rotates the plate 16 together with the plate fixing stage 15 so that the plates 16 are arranged. As a result, the blade 17 slides in an angular posture in which the longitudinal direction of the blade 17 deviates from the main groove pattern direction 19a, so that the tip of the blade 17 can be prevented from being caught in the plate groove.

When the blade 17 comes into contact with the divided region 18b as the moving table 13 travels, the main groove pattern direction 19b is aligned with the longitudinal direction of the blade 17 at an angle larger than 0 degrees as described above. The plate 16 is rotated by the mechanism 14. As a result, as described above, it is possible to prevent the tip of the blade 17 from being caught in the plate groove.

As described above, in Patent Document 1, the printing pattern of the plate is divided into a plurality of divided regions in the direction of relative movement with the blade at the time of inking, and the main groove pattern direction is obtained for each divided region, and the inking is performed. By rotating the plate and the blade relative to each other so that the direction of the main groove pattern obtained for the divided area in contact with the blade and the divided area in which the blades are in contact with each other is an angle larger than 0 degrees. , It is possible to prevent the tip of the blade from falling into the plate groove and getting caught, thereby preventing the occurrence of printing defects.

Japanese Patent No. 5347990

By the way, in the inking method as described in Patent Document 1 described above, it is necessary to perform troublesome work such as dividing the print pattern of the gravure plate and obtaining the main groove pattern direction for each divided area. The printing device of the above cannot be used as it is, and it is necessary to prepare a new printing device equipped with an alignment mechanism. In addition, there is a problem that it cannot be applied to roll-type gravure offset printing.

Furthermore, since the blade is not parallel to the main groove pattern direction of the gravure plate, the parallel relationship between the blade and the groove pattern is not completely eliminated, and therefore the blade is completely depressed and caught. Is unavoidable.

In view of such a situation, an object of the present invention is to provide a method for producing a printed wiring capable of printing a wiring pattern satisfactorily without causing a printing defect by gravure printing, and further, gravure printing. It is an object of the present invention to provide a touch panel and a method for producing a touch panel in which a conductor layer can be formed satisfactorily without causing printing defects.

According to the invention of claim 1, in a method of producing a printed wiring in which a wiring pattern made of a film of a cured conductive ink is formed on a base material, the printed wiring is extended in a specific direction on the surface of the base material. The wiring pattern that is not formed of a thin mesh is composed of wavy lines, and next to at least one wavy line included in the wiring pattern composed of wavy lines, there is an adjacent wiring pattern that is insulated from the wavy line. A folded portion that is formed and projects in each of two directions perpendicular to the extension direction of the wavy line, and that protrudes in one direction toward the side where the adjacent wiring pattern is formed among the folded portions of the wavy line. Conductive by a doctor blade installed so as to be parallel to the extension direction in a gravure plate having a notch at its apex and a recess defining a wiring pattern made of a cured conductive ink film. The printed wiring is printed by gravure printing, which comprises a step of filling the ink by squeezing the ink in a direction that coincides with one of the two directions perpendicular to the doctor blade.

In the invention of claim 2, in the invention of claim 1, the adjacent wiring pattern is included in another wiring pattern composed of wavy lines, which extends in parallel with the wavy line and is arranged together with the wavy line. It is said to be a wavy line.

According to the invention of claim 3, in a method of producing a printed wiring in which a wiring pattern made of a film of a cured conductive ink is formed on a base material, the printed wiring is extended in a specific direction on the surface of the base material. The wiring pattern that is not formed of a thin mesh is composed of wavy lines, and at least one wavy line included in the wiring pattern composed of wavy lines has two directions perpendicular to the extension direction of the wavy line. At the apex of the folded-back portion protruding in at least one of the above directions, a notch is provided in which the folded-back portion is cut out by a straight line parallel to the extension direction, and a wiring pattern made of a cured conductive ink film is defined. A doctor blade installed so as to be parallel to the extension direction of the wavy line provides the conductive ink with the notch in two directions in the direction orthogonal to the doctor blade in the gravure plate having the concave portion. The printed wiring is printed by gravure printing, which comprises a step of filling by squeezing in the protruding direction of the apex of the folded portion.

According to the invention of claim 4, in a method of producing a printed wiring in which a wiring pattern made of a film of a cured conductive ink is formed on a base material, the printed wiring is extended in a specific direction on the surface of the base material. The wiring pattern that is not formed of a thin mesh is composed of wavy lines, and at least one wavy line included in the wiring pattern composed of wavy lines has two directions perpendicular to the extension direction of the wavy line. A wavy line is extended in a gravure plate having a W-shaped notch at the apex of a folded portion protruding in at least one of the above directions and a recess for defining a wiring pattern made of a cured conductive ink film. By the doctor blade installed so as to be parallel to the doctor blade, the conductive ink is skied in the direction in which the apex of the folded portion provided with the notch out of the two directions perpendicular to the doctor blade protrudes. Print wiring is printed by gravure printing, which has a step of filling by ging.

According to the invention of claim 5, it is composed of a film of a cured conductive ink, and includes a conductor layer having a sensor electrode array arranged in a rectangular sensor region and a lead wire drawn from the sensor electrode array. The touch panel is formed of a mesh of thin wires whose sensor electrode rows are composed of lines diagonally intersecting both the short side and the long side of the rectangle, and extends parallel to the short side of the lead wiring. Wiring that is not formed of a thin mesh of at least one of the short-side parallel portion and the long-side parallel portion extending parallel to the long side is composed of wavy lines and is included in the wiring composed of wavy lines. Adjacent wiring patterns isolated from the wavy line are formed next to at least one wavy line, and the folded portion of the wavy line protruding in each of the two directions perpendicular to the extension direction of the wavy line. It is assumed that a notch is provided at the apex only at the folded-back portion that protrudes in one direction toward the side where the adjacent wiring pattern is formed.

In the invention of claim 6, in the invention of claim 5, the adjacent wiring pattern is another wavy line included in the wiring composed of wavy lines, which extends in parallel with the wavy line and is arranged together with the wavy line. It is said that.

According to the invention of claim 7, it is composed of a film of a cured conductive ink, and includes a conductor layer having a sensor electrode array arranged in a rectangular sensor region and a drawer wiring drawn from the sensor electrode array. The touch panel is formed of a mesh of thin wires composed of line segments whose sensor electrode rows intersect both the short side and the long side of the rectangle, and extends parallel to the short side of the lead wiring. At least one of the short side parallel portion and the long side parallel portion extending parallel to the long side, which is not formed of a thin mesh, is composed of wavy lines and is included in the wiring composed of wavy lines. In at least one wavy line, the folded portion is cut out by a straight line parallel to the extended direction at the apex of the folded portion protruding in at least one of two directions in the direction orthogonal to the extension direction of the wavy line. It is assumed that a notch is provided.

The invention of claim 8 is a method for producing a touch panel according to any one of claims 5 to 7, wherein a gravure plate having a recess for defining a pattern of a conductor layer is formed with respect to an extension direction of the wavy line. The conductive ink is filled by squeezing the conductive ink in the direction in which the apex of the folded-back portion is provided out of the two directions orthogonal to the doctor blade by the doctor blades installed so as to be parallel to each other. The conductor layer is printed by gravure printing having the step of printing.

According to the method for producing printed wiring according to the present invention, a wiring pattern can be gravure-printed satisfactorily without causing printing defects due to the doctor blade falling into the recess of the gravure plate.

Further, according to the touch panel and the method for producing a touch panel according to the present invention, a conductor layer can be satisfactorily formed by gravure printing without causing printing defects due to the doctor blade falling into the recess of the gravure plate.

The schematic diagram for demonstrating the outline of the roll type gravure offset printing apparatus. The figure for demonstrating the composition outline of the touch panel which is the object of this invention. A is a partially enlarged view showing the details of the first sensor electrode row of the touch panel shown in FIG. 2, and B is a partially enlarged view showing the details of the second sensor electrode row of the touch panel shown in FIG. The partially enlarged view which shows the 1st sensor electrode row and the pull-out wiring drawn out from the 1st sensor electrode row in one Example of the touch panel by this invention. FIG. 6 is a partially enlarged view showing a drawer wiring drawn from a first sensor electrode row in an embodiment of a touch panel according to the present invention. A is a diagram showing a first example of a wavy line shape of a wiring pattern, and B is a diagram for explaining tailing and bleeding of ink. A is a diagram showing a second example of the wavy line shape of the wiring pattern, B is a diagram showing a third example of the wavy line shape of the wiring pattern, and C is a diagram showing a fourth example of the wavy line shape of the wiring pattern. A is a plan view showing a state in which the blade is in contact with the first division area of the print pattern in the conventional inking method in gravure offset printing, and B is a second division area of the printing pattern after the state of A. A plan view showing a state of being in contact with. The side view which shows the apparatus configuration used for carrying out the conventional inking method in gravure offset printing.

First, an outline of roll-type gravure offset printing applied to the present invention will be described.

FIG. 1 shows the configuration of a gravure offset printing apparatus, in which ink 24 is supplied by a dispenser 23 to a cylindrical gravure plate 22 attached to a gravure cylinder 21. The ink 24 is filled in the recess 22a that defines the printing pattern formed on the gravure plate 22 by the doctor blade 25, and the excess ink 24 is scraped off by the doctor blade 25 and is uniform so that the ink 24 fits in the recess 22a. To be smoothed. The ink 24 filled in the recess 22a of the gravure plate 22 is attached to the blanket body 26, and the blanket 27 that rotates while being pressed against the gravure plate 22 is pulled out and transferred onto the blanket 27. The ink 24 transferred onto the blanket 27 Is retransferred (transferred) to the flown base material (printing base material) 28 and printed.

The present invention makes it possible to eliminate printing defects caused by the drop of the doctor blade 25 into the recess 22a of the gravure plate 22 by using the conventional gravure offset printing apparatus as it is in such gravure offset printing. Yes, it will be described below with specific examples.

FIG. 2 shows an outline of the configuration of a capacitance type touch panel. In FIG. 2, 30 indicates a transparent substrate. The capacitance type touch panel has a structure in which, for example, a first conductor layer, an insulating layer, a second conductor layer, and a protective film are sequentially laminated on a transparent substrate 30.

Although the detailed illustration of the sensor electrode row is omitted in FIG. 2, the sensor electrode row is composed of a plurality of first sensor electrode rows and a plurality of second sensor electrode rows, and the plurality of first sensor electrode rows are the first conductors. It is formed by layers, and the plurality of second sensor electrode rows are formed by a second conductor layer that is insulated from the first conductor layer by an insulating layer. In FIG. 2, a portion surrounded by a rectangular frame indicates a sensor region 40 in which the sensor electrode array is located.

FIG. 3A shows the details of the first sensor electrode row 51 formed by the first conductor layer, and FIG. 3B shows the details of the second sensor electrode row 61 formed by the second conductor layer. It shows the details.

The first sensor electrode row 51 includes a plurality of island-shaped electrodes 52 arranged in the X direction parallel to the long side 41 of the rectangular sensor region 40, and a connecting portion 53 connecting adjacent island-shaped electrodes 52. .. A plurality of first sensor electrode rows 51 are provided in parallel in the Y direction parallel to the short side 42 of the rectangular sensor region 40. The second sensor electrode row 61 includes a plurality of island-shaped electrodes 62 arranged in the Y direction, and a connecting portion 63 connecting adjacent island-shaped electrodes 62. A plurality of second sensor electrode rows 61 are provided in parallel in the X direction. The first sensor electrode row 51 and the second sensor electrode row 61 are intersected with each other in an insulated state, and the connecting portions 53 and 63 are located at positions where they overlap each other. As shown in FIGS. 3A and 3B, the first sensor electrode row 51 and the second sensor electrode row 61 are composed of line segments diagonally intersecting both the long side 41 and the short side 42 of the sensor region 40, and are internally formed. It is formed of a mesh of fine wires forming a large number of cell-shaped voids, and the island-shaped electrodes 52 and 62 have a diamond-shaped outer shape.

The drawer wirings 71 and 72 and the terminal portion 73 shown in FIG. 2 are formed by the first conductor layer, and the ground wiring 74 is formed by both the first and second conductor layers. The lead-out wiring 71 is drawn out from both ends in the X direction of each of the first sensor electrode rows 51, and the lead-out wiring 72 is drawn out from one end in the Y direction of each of the second sensor electrode rows 61. In FIG. 2, a plurality of drawer wires 71 and 72 that are arranged and drawn out from the sensor region 40 are shown only those located at both ends of the array, and those other than those located at both ends are omitted from the drawing.

The terminal portions 73 are arranged and formed in the central portion of one long side of the rectangular transparent substrate 30, and the drawer wirings 71 and 72 extend to the terminal portion 73 and are connected to the terminal portion 73. The ground wiring 74 is formed on the peripheral edge of the transparent substrate 30 so as to surround the sensor area 40 and the drawer wirings 71 and 72. The ground wiring 74 is also connected to the terminal portion 73.

Although the thick terminal portion 73 and the ground wiring 74 are not shown in detail, they diagonally intersect both the long side 41 and the short side 42 of the sensor region 40 as in the first and second sensor electrode rows 51 and 61. It is composed of line segments and is formed of a mesh of fine wires containing a large number of cell-shaped voids in the extension direction and the width direction. The thin lead-out wirings 71 and 72 are line-shaped (linear) wirings.

When the first and second conductor layers having the above structure are printed and formed by the gravure offset printing apparatus shown in FIG. 1 using a conductive ink containing conductive particles such as silver, the pattern of the conductor layers is defined. The squeezing direction of the doctor blade with respect to the gravure plate having the recess is parallel to the long side 41 of the sensor region 40, that is, the X direction parallel to the long side of the transparent substrate 30, or parallel to the short side 42 of the sensor region 40, that is. It is in any of the Y directions parallel to the short side of the transparent substrate 30.

Since the first and second sensor electrode rows 51 and 61, the terminal portion 73, and the ground wiring 74 are formed of a mesh that intersects in both the X and Y directions, these first and second sensor electrode rows The doctor blade does not fall into the recess of the gravure plate that defines the patterns of 51, 61, the terminal portion 73, and the ground wiring 74. On the other hand, since the leader wires 71 and 72 are composed of line segments extending in the X direction and the Y direction, respectively, the doctor blade may fall into the recess of the gravure plate that defines the patterns of the drawer wires 71 and 72, respectively. Can be done.

In order to eliminate such a drop of the doctor blade into the recess of the gravure plate, in the present invention, the long side parallel portion of the lead wires 71 and 72 extending in the X direction parallel to the long side 41 of the sensor region 40. And one of the short side parallel portions extending in the Y direction parallel to the short side 42 of the sensor region 40 is composed of wavy lines.

As shown in FIG. 2, the leader wiring 71 has a long side parallel portion 71a, a short side parallel portion 71b, and a long side parallel portion from the connection portion with the first sensor electrode row 51 toward the connection portion with the terminal portion 73. It has a portion 71c and a short side parallel portion 71d, and the leader wiring 72 has a short side parallel portion 72a and a long side parallel portion from the connection portion with the second sensor electrode row 61 toward the connection portion with the terminal portion 73. It has a portion 72b and a short side parallel portion 72c. With respect to these portions, in this example, the long short side parallel portion 71b of the leader wiring 71 is configured by a wavy line.

FIG. 4 shows in detail a state in which the short side parallel portions 71b of the leader wiring 71 arranged in large numbers are composed of wavy lines, and FIG. 5 shows the state in which the short side parallel portion 71b of the drawer wiring 71 is parallel to the long side. The transition portion to the portion 71c is shown in more detail. In this example, the short long side parallel portion 71a of the drawer wiring 71, which is the connection portion with the first sensor electrode row 51, is a mesh that diagonally intersects in both the X direction and the Y direction, as shown in FIG. Is formed of.

As described above, in this example, the long short side parallel portion 71b of the leader wiring 71 is composed of wavy lines. The long side parallel portion 72b of the drawer wiring 72 is formed by a normal straight line. The short side parallel portions 71d of the other leader wiring 71 and the short side parallel portions 72a and 72c of the drawer wiring 72 are not shown in detail, but in this example, the same as the long side parallel portion 71a of the drawer wiring 71. It is made of mesh.

In this way, the short side parallel portion 71b of the leader wiring 71 is formed of wavy lines, and the first conductor layer is printed and formed by gravure offset printing. At the time of printing, the conductive ink is extended by a doctor blade installed in the Y direction so as to be parallel to the extension direction of the wavy line on the gravure plate having the recess defining the pattern of the first conductor layer. Filling is performed by squeezing in the direction perpendicular to the direction (X direction). As a result, it is possible to prevent the doctor blade from falling into the recess of the gravure plate, and it is possible to eliminate the occurrence of printing defects caused by the doctor blade falling and being caught.

6A and 7A to 7C show various examples of wavy line shapes applied to the wiring pattern.

In the wiring pattern 100 forming the wavy line shown in FIG. 6A, the wavy line is a triangular wave. FIG. 6B shows a shape defect that may occur in the printed wiring pattern 100 when the wavy line is a triangular wave and gravure offset printing is performed. In FIG. 6B, the arrow S indicates the squeezing direction of the doctor blade. The tailing of the ink with a may occur from the folding part (corner) of the triangular wave located on the front side with respect to the squeezing direction, and the ink with b may bleed at the folding part of the triangular wave. ..

If the tailing or bleeding of such ink becomes large, it comes into contact with the adjacent wiring pattern and causes a circuit failure, which is a factor that hinders the narrowing of the arrangement pitch of the wiring pattern.

The wavy lines of the wiring patterns 110, 120, and 130 shown in FIGS. 7A to 7C are located on the front side with respect to the squeezing direction in order to reduce the risk of tailing and bleeding coming into contact with adjacent wiring patterns as described above. A notch is formed at the apex of the folded part of the triangular wave.

The wiring pattern 110 shown in FIG. 7A has a V-shaped notch 111 formed in the folded portion, and the wiring pattern 120 shown in FIG. 7B has the folded portion cut out in a straight line to form the notch 121. It was done. Further, in the wiring pattern 130 shown in FIG. 7C, a W-shaped notch 131 is formed at the folded-back portion. By providing notches in this way, even if ink tailing or bleeding occurs, their dimensions become small, so the risk of contact with adjacent wiring patterns can be reduced, and thus the wiring pattern arrangement. The pitch can be narrowed. The wiring patterns 110, 120, and 130 shown in FIGS. 7A to 7C are also notched in a straight line at the folded-back portion in which the cutouts 111, 121, and 131 are formed and project in the opposite direction. 112, 122, and 132 are formed, respectively.

The wavy line shape of the wiring pattern is not limited to the triangular wave as described above, but may be a wavy line shape having a curved line such as a sine wave, and if it is sufficiently short so that the doctor blade does not fall, the extension direction of the wavy line. It may have a wavy line shape such as a trapezoidal wave containing a line segment element parallel to.

The wavy line shape shown in FIG. 7A is applied to the short side parallel portion 71b of the drawer wiring 71 of the touch panel shown in detail in FIGS. 4 and 5.

In the touch panel shown in FIG. 2, the long short side parallel portion 71b of the lead wire 71 parallel to the short side 42 of the sensor area 40 is composed of wavy lines. For example, the long side 41 of the sensor area 40 The long long side parallel portion 71c of the parallel leader wiring 71 and the long long side parallel portion 72b of the drawer wiring 72 may be composed of wavy lines, and either the short side parallel portion or the long side parallel portion is composed of wavy lines. To. Then, at the time of gravure offset printing, the conductive ink is skied in the direction orthogonal to the extension direction of the wavy line by the doctor blade installed so as to be parallel to the extension direction of the wavy line. Further, when a notch is provided at the apex of the folded portion protruding in one of the two specific directions in the direction orthogonal to the extension direction of the wavy line as shown in FIGS. 7A to 7C, the specific one is provided. Squeeze the conductive ink in the direction with the doctor blade.

As yet another embodiment, the long short side parallel portion 71b of the drawer wiring 71 parallel to the short side 42 of the sensor region 40, the long long side parallel portion 71c of the drawer wiring 71 parallel to the long side 41, and the drawer wiring 72. All of the long long side parallel portions 72b may be composed of wavy lines so that squeezing can be performed satisfactorily in both the direction parallel to the short side 42 and the direction parallel to the long side 41 of the sensor region 40.

As yet another form, the notches at the vertices of the folded portions of the wavy lines shown in FIGS. 7A to 7C are formed at the vertices on both sides of the wavy line, and in either of the two opposite directions. You may be able to ski well. This is useful, for example, when squeezing a total of two round trips in one direction to ensure thorough ink filling.

Although the touch panel has been described above as an example, in a printed wiring having a wiring pattern composed of a film of conductive ink cured on the base material, a wiring pattern extending in one or a plurality of specific directions on the surface of the base material. With wavy lines, or at least all of the non-meshed wiring patterns that extend in one or more specific directions, with wavy lines. When printing a wiring pattern, the conductive ink is filled by squeezing the conductive ink in a direction orthogonal to the direction of the doctor blade by a doctor blade installed so as to be parallel to a specific direction of one or a plurality of the wiring patterns. By doing so, it is possible to prevent the doctor blade from falling into the recess of the gravure plate, and thus it is possible to eliminate the occurrence of printing defects caused by the doctor blade falling and being caught. Further, for example, when the outer shape of the device for printing the wiring is square, two orthogonal directions parallel to each side thereof are set as specific directions, and when a notch is provided at the folded portion of the wavy line, it is provided at the apex on both sides thereof. You can make good squeezing even if you install it on the printing machine in any direction along each side, or select one according to the situation when printing from multiple specific directions. Is also possible. The present invention is intended for an electronic device such as a printed wiring and a touch panel including the printed wiring, which can eliminate the occurrence of printing defects in this way.

The printing used is not limited to the roll type gravure offset printing, but may be a flat plate type gravure offset printing or may be a gravure printing.

11 Base 12 Linear guide 13 Moving table 14 Alignment mechanism 15 Plate fixed stage 16 Plate 17 Blade 18 Printing pattern 18a, 18b Divided area 19a, 19b Main groove pattern direction 21 Gravure body 22 Gravure plate 22a Recessed 23 Dispenser 24 Ink 25 Doctor blade 26 Blanket body 27 Blanket 28 Base material 30 Transparent substrate 40 Sensor area 41 Long side 42 Short side 51 First sensor electrode row 52 Island-shaped electrode 53 Connecting part 61 Second sensor electrode row 62 Island-shaped electrode 63 Connecting part 71 Drawer wiring 71a, 71c Long side parallel part 71b, 71d Short side parallel part 72 Drawer wiring 72a, 72c Short side parallel part 72b Long side parallel part 73 Terminal part 74 Ground wiring 100, 110, 120, 130 Wiring pattern 111, 112, 121, 122, 131, 132 Notches

Claims (8)

It is a method of producing a printed wiring in which a wiring pattern composed of a cured conductive ink film is formed on a base material.
The wiring pattern of the printed wiring, which extends in a specific direction on the surface of the base material and is not formed of a fine wire mesh, is composed of wavy lines.
Next to at least one wavy line included in the wiring pattern composed of the wavy line, an adjacent wiring pattern insulated from the wavy line is formed, and two directions in a direction orthogonal to the extension direction of the wavy line. A notch is provided at the apex only in the folded portion of the folded portion of the wavy line protruding in each of the folded portions in one direction toward the side where the adjacent wiring pattern is formed.
A direction in which the conductive ink is orthogonal to the doctor blade by a doctor blade installed so as to be parallel to the extension direction in a gravure plate having a recess defining a wiring pattern made of the cured conductive ink film. A method for producing a printed wiring, which comprises printing the printed wiring by gravure printing, which comprises a step of filling by squeezing in a direction matching the one of the two directions in the above. In the method for producing printed wiring according to claim 1,
The production of printed wiring, wherein the adjacent wiring pattern is another wavy line included in the wiring pattern composed of the wavy line, which extends parallel to the wavy line and is arranged together with the wavy line. Method. It is a method of producing a printed wiring in which a wiring pattern composed of a cured conductive ink film is formed on a base material.
The wiring pattern of the printed wiring, which extends in a specific direction on the surface of the base material and is not formed of a fine wire mesh, is composed of wavy lines.
The at least one wavy line included in the wiring pattern composed of the wavy lines has a folded portion at the apex of the folded portion protruding in at least one of two directions in the direction orthogonal to the extension direction of the wavy line. Is provided with a notch formed by a straight line parallel to the extension direction.
The conductive ink is orthogonal to the doctor blade by a doctor blade installed so as to be parallel to the extension direction of the wavy line in a gravure plate having a recess defining a wiring pattern formed of the cured conductive ink film. The printed wiring is printed by gravure printing, which comprises a step of filling by squeezing in the protruding direction of the apex of the folded-back portion provided with the notch out of the two directions in the direction of printing. How to produce printed wiring. It is a method of producing a printed wiring in which a wiring pattern composed of a cured conductive ink film is formed on a base material.
The wiring pattern of the printed wiring, which extends in a specific direction on the surface of the base material and is not formed of a fine wire mesh, is composed of wavy lines.
The at least one wavy line included in the wiring pattern composed of the wavy lines has a W shape at the apex of the folded portion protruding in at least one of the two directions in the direction orthogonal to the extension direction of the wavy line. There is a notch in the shape,
The conductive ink is orthogonal to the doctor blade by a doctor blade installed so as to be parallel to the extension direction of the wavy line in a gravure plate having a recess defining a wiring pattern formed of the cured conductive ink film. The printed wiring is printed by gravure printing, which comprises a step of filling by squeezing in the protruding direction of the apex of the folded-back portion provided with the notch out of the two directions in the direction of printing. How to produce printed wiring. A touch panel composed of a cured conductive ink film and including a conductor layer having a sensor electrode array arranged in a rectangular sensor region and a lead wire drawn from the sensor electrode array.
The sensor electrode row is formed of a mesh of thin lines composed of line segments diagonally intersecting both the short side and the long side of the rectangle.
Of the lead wiring, at least one of the short side parallel portion extending parallel to the short side and the long side parallel portion extending parallel to the long side is not formed of a thin mesh. The wiring is composed of wavy lines,
Adjacent wiring patterns isolated from the wavy line are formed next to at least one wavy line included in the wiring composed of the wavy line, and two directions in directions orthogonal to the extension direction of the wavy line. It is characterized in that a notch is provided at the apex only of the folded portion of the folded portion of the wavy line protruding from each of the folded portions that protrudes in one direction toward the side where the adjacent wiring pattern is formed. Touch panel. In the touch panel according to claim 5,
A touch panel characterized in that the adjacent wiring pattern is another wavy line included in the wiring composed of the wavy line, which extends in parallel with the wavy line and is arranged together with the wavy line. A touch panel composed of a cured conductive ink film and including a conductor layer having a sensor electrode array arranged in a rectangular sensor region and a lead wire drawn from the sensor electrode array.
The sensor electrode row is formed of a mesh of thin lines composed of line segments diagonally intersecting both the short side and the long side of the rectangle.
Of the lead wiring, at least one of the short side parallel portion extending parallel to the short side and the long side parallel portion extending parallel to the long side is not formed of a thin mesh. The wiring is composed of wavy lines,
At least one wavy line included in the wiring composed of the wavy line has a folded portion at the apex of the folded portion protruding in at least one of two directions in the direction orthogonal to the extension direction of the wavy line. A touch panel characterized in that a notch formed by a straight line parallel to the extension direction is provided. A method for producing the touch panel according to any one of claims 5 to 7.
A doctor blade installed in a gravure plate having a recess defining a pattern of the conductor layer so as to be parallel to the extension direction of the wavy line allows conductive ink to be applied in two directions in a direction orthogonal to the doctor blade. A method for producing a touch panel, which comprises printing the conductor layer by gravure printing, which comprises a step of filling by squeezing in the protruding direction of the apex of the folded-back portion provided with the notch.

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