JP2010205177A - Screen board and method for manufacturing touch panel using same - Google Patents

Screen board and method for manufacturing touch panel using same Download PDF

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Publication number
JP2010205177A
JP2010205177A JP2009052592A JP2009052592A JP2010205177A JP 2010205177 A JP2010205177 A JP 2010205177A JP 2009052592 A JP2009052592 A JP 2009052592A JP 2009052592 A JP2009052592 A JP 2009052592A JP 2010205177 A JP2010205177 A JP 2010205177A
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provided
touch panel
screen plate
hole
substrate
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JP2009052592A
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Japanese (ja)
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Kimitaka Nomura
Ikuko Sakai
郁子 酒井
公孝 野村
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Sharp Corp
シャープ株式会社
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Priority to JP2009052592A priority Critical patent/JP2010205177A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a screen board which can simplify a touch panel manufacturing process and achieve cost reduction. <P>SOLUTION: The base material 1A of the screen board 1 includes: an area 2A provided with a plurality of holes 2 for forming a spacer that keeps an upper substrate and a lower substrate provided in a touch panel at a predetermined interval at an inputting part of the touch panel by screen printing; and an area 3A provided, around the area 2A, with a plurality of holes 3 for forming an insulating layer for insulating wiring provided in an area outside the inputting part of the touch panel by screen printing. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a screen plate used when manufacturing a touch panel and a method of manufacturing a touch panel using the same.

  In recent years, touch panels have been widely used as input means for operating multifunctional electronic devices such as PDA (Personal Digital Assistant), MP3 player, car navigation, and the like. In these electronic devices equipped with a touch panel, icons and characters corresponding to operations that can be generally input are displayed. Therefore, the above symbols and characters are displayed on the back of a transparent touch panel as necessary. Display means that can be changed by the user or a display sheet that displays fixed symbols or characters.

  Accordingly, an operator of an electronic device can directly operate a touch panel as an input means while looking at icons and characters such as icons corresponding to various inputable operations. It is possible to provide an easy-to-use user interface.

  In addition, touch panel touch detection methods include resistive film systems, capacitive systems, ultrasonic systems using sound wave absorption, blocking infrared light emitted by light emitting elements, or receiving reflected light with light receiving elements. An infrared method for detecting a touched position, an electromagnetic induction method using electromagnetic induction, and the like are known.

  Among them, the resistance film method is generally widely used because of ease of manufacture.

  FIG. 8 is a schematic cross-sectional view showing a basic configuration of a conventional resistive film type touch panel 100.

  As shown in the drawing, the resistive film type touch panel 100 is formed by pressing the input surface 111a of the upper transparent substrate 111 so that the transparent substrate is opposed to the dot-shaped spacer 140 with a predetermined interval 130 therebetween. The upper transparent electrode 121 provided on 111 and the lower transparent electrode 122 provided on the transparent substrate 112 are in contact with each other at the pressed position, and the current flowing when the contact is made is measured by the detector 150. Thus, the touch detection is performed.

  FIG. 9 is a manufacturing process diagram of a lower substrate provided in a conventional touch panel.

  FIG. 10 is a manufacturing process diagram for explaining the manufacturing process of the upper substrate provided in the conventional touch panel.

  FIG. 11 is a cross-sectional view showing a schematic configuration of a conventional touch panel manufactured by bonding the lower substrate and the upper substrate together.

  Patent Document 1 describes a manufacturing method in which the dot-shaped spacer 207 and the insulating portion region 210 are simultaneously formed by photolithography.

  Hereinafter, the manufacturing method will be described in detail with reference to FIG.

  As shown in FIGS. 9A and 9B, first, a transparent resistance film 205 is entirely formed on the entire upper surface of the transparent insulating substrate 203.

  Next, as shown in FIG. 9C, a transparent insulating film 206 was formed on the entire surface of the resistance film 205.

  Thereafter, as shown in FIG. 9D, the input region of the insulating film 206 is patterned by photolithography to form dot-like or lattice-like spacers 207, and at the same time, outside the input portion region. The insulating region 210 was left.

  Finally, as shown in FIG. 9 (e), a pair of strip electrodes 208 parallel to both ends of the input region were formed to obtain the lower substrate 201.

  On the other hand, the upper substrate 202 is manufactured as follows.

  Hereinafter, the manufacturing method will be described in detail with reference to FIG.

  As shown in FIGS. 10A and 10B, first, a transparent resistance film 205 is entirely formed on the entire upper surface of the transparent flexible insulating base material 204.

  Next, as shown in FIG. 10C, the resistance film 205 is etched away leaving the input region.

  Next, as shown in FIG. 10D, a pair of strip electrodes 208 parallel to both ends of the resistance film 205 are formed. Further, a lead wire 209 connected to each strip electrode 208 and a lead wire 209 connected to each strip electrode 208 of the lower substrate 201 after bonding are formed as the upper substrate 202.

  Finally, as shown in FIG. 11, the lower substrate 201 and the upper substrate 202 obtained as described above are overlapped with their inter-electrode directions shifted by 90 degrees, and the periphery is pasted with an adhesive 211. At the same time, by connecting the strip electrode 208 of the lower substrate 201 and the lead wire 209 of the upper substrate 202 with the conductive adhesive 212, a transparent resistive touch panel can be obtained.

  According to the above configuration, in order to form the spacer 207 by the photolithography method, the insulating film 206 is used, and the input portion region of the insulating coating 206 is patterned to form the spacer 207 and at the same time outside the input portion region. Since it is left as the insulating region 210, it is described that the step of forming the insulating region 210 (coating, pasting, etc.) is not required separately from the step of forming the spacer 207, and the process is simplified.

  Also, as a method for forming dot-like spacers, a photolithographic method in which a UV curable resin layer is formed on the electrode surface of the substrate and exposure patterning is performed, an insulating layer is provided on the electrode surface, an etching method, a screen printing method, and the like are known. Yes.

  Patent Document 2 describes a screen printing method using a metal screen plate as a method for forming a small-diameter dot-shaped spacer with good productivity among the methods for forming the dot-shaped spacer.

According to the above method, as shown in FIG. 8, fine dot-shaped spacers 140 of a well-shaped hemispherical synthetic resin are stably provided with high productivity on a transparent substrate 112 that is a flat surface. It is described that it can.

Japanese Patent Laid-Open No. 7-282675 (released on October 27, 1995) JP-A-8-94995 (published on April 12, 1996)

  However, in the manufacturing method in which the dot-shaped spacer 207 and the insulating region 210 are simultaneously formed by the photolithography method described in Patent Document 1, since the photolithography method is used, the number of steps is increased and the cost is increased. In addition, in the development process, the resistance film 205 may be corroded by the developing solution or the surface of the resistance film 205 may be denatured. In particular, in a resistive film type touch panel in which a pressed portion is detected by a change in the resistance value of the resistive film 205, it is not preferable to use a photolithography method that may cause a resistance change of the resistive film 205.

  Note that the method described in Patent Document 1 is difficult to apply when the touch panel is narrowed and the upper and lower wirings overlap each other. That is, the method described in Patent Document 1 is applied when the lead wire 209 is provided only on the upper substrate 202 side so as not to overlap as shown in FIG. Can do.

  FIG. 12 shows an external view of a conventional touch panel 160 formed by a screen printing method.

  As shown in the figure, the dot-shaped spacer 161 that maintains a predetermined space between the substrates and the insulating layer 164 provided to avoid the leakage of the wirings 162 and 163 of the upper and lower electrodes have a finished shape and the like. Because of the difference, the dot spacer formation process using the dot spacer formation screen plate 165 shown in FIG. 13A and the insulating layer formation shown in FIG. The process for forming the insulating layer using the screen plate 166 is a separate process.

  That is, in the screen printing method using the metal screen plate described in Patent Document 2, the fine dot-shaped spacer 140 can be stably provided with high productivity on the transparent substrate 112 that is a plane. Since it is not considered at all to provide an insulating layer that needs to be provided in order to avoid vertical leakage of wiring outside the input portion region, the insulating layer is separated from the other step. Therefore, there is a problem that the process cannot be simplified.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a screen plate capable of simplifying the manufacturing process of the touch panel and realizing cost reduction.

  It is another object of the present invention to provide a method for manufacturing a touch panel that can simplify the manufacturing process and realize cost reduction.

In order to solve the above-described problems, the screen plate of the present invention uses a screen printing to form a spacer that maintains the upper substrate and the lower substrate provided in the touch panel at a predetermined interval at the input portion of the touch panel. An insulating layer that includes a first region provided with a plurality of first holes for forming, and that insulates a wiring provided in a region outside the input portion of the touch panel around the first region Is provided with a second region provided with a plurality of second holes for forming the film by screen printing.

  According to the said structure, the 1st hole for forming the said spacer and the 2nd hole for forming an insulating layer are provided in one base material. That is, the two types of holes described above are formed in the same screen plate.

  Therefore, by using the screen plate, it is possible to simultaneously form the spacer and the insulating layer, which were conventionally provided in separate steps, simplify the manufacturing process and realize cost reduction. .

  In addition, when the screen plate is used, a development process is not required, so that the possibility that the resistance film provided on the touch panel is corroded or the surface of the resistance film is denatured can be suppressed. .

  In the screen plate of the present invention, the first holes are dot-shaped, and the second holes are provided larger than the first holes and are arranged in a plurality of rows in the second region. It is preferable.

  Since the first hole is provided in the first area of the screen plate corresponding to the input portion of the touch panel which is a display area, it is required to be fine. For this reason, the first hole is preferably point-like. On the other hand, the second hole is provided in order to avoid leakage of overlapping wiring when the upper and lower substrates are bonded to the second area of the screen plate corresponding to the wiring portion of the touch panel which is a non-display area. It is preferable that an insulating layer formed of an insulating material applied through the second hole by screen printing is provided larger than the first hole so as to cover the entire wiring after the upper and lower substrates are bonded together. .

  In the present invention, the second hole is for forming an insulating layer for insulating a wiring provided in an area outside the input portion of the touch panel as described above by screen printing, and the second area is Needless to say, it is provided corresponding to the insulating layer forming region of the touch panel. Since a plurality of the second holes are provided in the second region, the upper limit of the size is naturally limited by the standard of the touch panel to be manufactured. However, even if the second hole has such a limited size, the larger the shape of the second hole, the lower the strength as a screen plate.

  Therefore, as described above, by providing the second holes in a row in the second region, the second region has a space between the holes (more specifically, the rows). A linear gap (a portion where no hole is provided) is formed between the columns. Therefore, according to said structure, since durability can be improved, maintaining the intensity | strength of the said screen plate, further cost reduction can be achieved by using the said screen plate.

  Further, according to the above configuration, since the second hole is larger in size than the first hole, the entire wiring is covered after the upper and lower substrates are bonded as described above. The insulating material can be applied in a different amount, and different amounts of the insulating material can be applied in the first hole and the second hole. Therefore, in the input part of the touch panel which is a display area, it is possible to suppress a decrease in transmittance due to the spacer formed by the first hole.

  In the screen plate of the present invention, the second hole is preferably formed in a rectangular shape whose longitudinal direction is the printing direction in screen printing.

  According to the above configuration, since the longitudinal direction of the rectangular hole provided for forming the insulating layer is parallel to the screen printing direction, the squeegee sweeps the touch panel screen plate against the substrate. At the time of screen printing, the portion where the squeegee and the rectangular hole come into contact can be reduced.

  Therefore, the durability of the screen plate can be improved while maintaining the strength. Therefore, further cost reduction can be achieved by using the screen plate.

  In the screen plate of the present invention, when the upper substrate and the lower substrate of the touch panel are bonded to each other, the second hole is formed at a portion where the wirings respectively provided on the upper substrate and the lower substrate overlap each other. Is preferably provided.

  It is not necessary to form an insulating film in a portion where the wirings provided on the upper substrate and the lower substrate of the touch panel do not overlap each other. For this reason, according to the said structure, since the durability can be improved, maintaining the intensity | strength of the said screen plate for touchscreens, further cost reduction can be aimed at by using the said screen plate for touchscreens. it can.

  In the screen plate of the present invention, when the upper substrate and the lower substrate of the touch panel are bonded together, the second hole is a portion where the wirings respectively provided on the upper substrate and the lower substrate overlap each other. It is preferable that the side to be provided is provided so that the total area of the second hole in the side is larger than the side having no overlapping portion.

  According to the above configuration, in the side where the wiring provided on the upper substrate and the lower substrate of the touch panel has an overlapping portion, the total area of the second hole in the side is increased. The second hole is provided in the base material of the screen plate. That is, on the side where the wiring does not overlap, for example, a region where the second region does not exist partially is provided on the base material, and the area of the second region, strictly speaking, the second region The total area of the holes is reduced.

  Therefore, in the screen version for a touch panel, the second region provided around the first region does not have the same area on all the sides of the base material, but the other side depends on the side. The area is smaller than that of the second region provided in. Strictly speaking, the total surface performance of the second hole is small. For this reason, since durability can be improved, maintaining intensity | strength, further cost reduction can be achieved by using the said screen version for touchscreens.

  In the screen plate of the present invention, the substrate is preferably made of a metal. That is, the touch panel screen plate of the present invention is preferably a metal screen plate.

  In the screen plate using cloth as the base material, since the screen cloth has coarser meshes than holes for forming dot-shaped spacers, for example, when forming dot-shaped spacers as the spacers, It is difficult to form such a spacer in a uniform shape, and when it is used repeatedly, the eyes of the screen cloth are gradually filled with the spacer material, and the shape of the spacer may gradually change. There is.

According to the above configuration, since the base material made of metal is used as the base material, the durability of the base material, that is, the durability of the screen plate itself can be improved, and the cost can be further reduced. Can do.

  Furthermore, problems that may occur when the above-described cloth screen plate is used can be suppressed.

  In order to solve the above problems, a method for manufacturing a touch panel according to the present invention includes an upper substrate and a lower substrate provided with a resistance film and wiring connected to the resistance film, A touch panel manufacturing method in which a lower substrate is bonded to each other, wherein the resistance film is provided in an input part of the touch panel, and the wiring is provided in the input part of the touch panel without the resistance film. The screen is printed using the screen plate according to the present invention, so that the upper substrate and the lower substrate are placed on the resistive film on either the upper substrate or the lower substrate. A spacer that maintains a predetermined distance from the side substrate is formed, and at the same time, an insulating layer that insulates the wiring is formed on the wiring.

  According to the above configuration, the spacer and the insulating layer can be formed simultaneously by using a screen printing method.

  Therefore, the manufacturing process can be simplified and the cost can be reduced.

  In addition, when the screen printing method is used, a development process is not required, so that it is possible to suppress the possibility that the resistive film provided on the touch panel is corroded or the surface of the resistive film is denatured. .

  As described above, the screen plate of the present invention is for forming a spacer by screen printing so that the base material maintains the upper substrate and the lower substrate provided in the touch panel at a predetermined interval at the input part of the touch panel. An insulating layer for insulating a wiring provided in a region outside the input portion of the touch panel is provided around the first region by screen printing, the first region having a plurality of first holes. A second region provided with a plurality of second holes to be formed is provided.

  Therefore, the touch panel manufacturing process can be simplified and the cost can be reduced.

  In the touch panel manufacturing method of the present invention, the upper substrate and the lower substrate are formed on the resistive film in either one of the upper substrate and the lower substrate by screen printing using the screen plate. Is formed at the same time as a spacer, and at the same time, an insulating layer for insulating the wiring is formed on the wiring.

  Therefore, the manufacturing process can be simplified and the cost can be reduced.

It is a top view which shows the screen plate of one embodiment of this invention. It is a figure which shows schematic structure of the touchscreen of one embodiment of this invention. It is a process figure for demonstrating the manufacturing process of the touchscreen of one embodiment of this invention. (A) is a top view which shows the screen plate of other embodiment of this invention, (b) is the positional relationship of the dot-shaped spacer formed using the said screen plate, an insulating layer, and wiring. FIG. (A) is a top view which shows the screen plate of further another embodiment of this invention, (b) is the positional relationship of the dot-shaped spacer and insulating layer which were formed using the said screen plate, and wiring. FIG. (A) is a top view which shows the screen plate of further another embodiment of this invention, (b) is the wiring of the location in which the hole for forming an insulating layer is not provided in the said screen plate It is a figure which shows an example. It is a top view which shows an example of the screen plate of further another embodiment of this invention. It is a cross-sectional schematic diagram which shows the basic composition of the conventional resistive film type touch panel. It is a manufacturing process figure for demonstrating the manufacturing process of the lower board | substrate with which the conventional touch panel was equipped. It is a manufacturing process figure for demonstrating the manufacturing process of the upper side board with which the conventional touch panel was equipped. FIG. 11 is a cross-sectional view illustrating a schematic configuration of a conventional touch panel manufactured by bonding the lower substrate of FIG. 9 and the upper substrate of FIG. 10. The external view of the conventional touch panel formed by the screen printing method is shown. (A) shows the conventional screen plate for dot-shaped spacer formation, (b) shows the conventional screen plate for insulating layer formation.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in this embodiment are merely one embodiment, and the scope of the present invention should not be construed as being limited thereto.

  The screen plate of the present invention is a screen plate for a touch panel that can simplify the manufacturing process of the touch panel and can realize cost reduction.

  Moreover, the manufacturing method of the touchscreen of one embodiment of this invention is a manufacturing method of the touchscreen which can implement | achieve cost reduction while being able to simplify a manufacturing process.

[Embodiment 1]
Hereinafter, based on FIGS. 1-3, the structure of the touchscreen of one Embodiment of this invention is demonstrated.

  FIG. 1 is a plan view showing a screen plate according to an embodiment of the present invention.

  Moreover, FIG. 2 is a figure which shows schematic structure of the touchscreen of one embodiment of this invention.

  As shown in FIG. 2, the touch panel 20 includes a transparent and flexible upper substrate 4 and a transparent lower substrate 5, and the upper substrate 4 includes a resistive film 6 and A wiring 8 connected to the resistance film 6 is provided, and a resistance film 6 and a wiring 9 connected to the resistance film 6 are provided on the lower substrate 5.

  In the present embodiment, the transparent and flexible upper substrate 4 is a transparent film made of polyethylene terephthalate resin. However, the present invention is not limited to this, and a plurality of films are stacked. A laminated body or the like can also be used.

  On the other hand, a glass substrate was used as the lower substrate 5.

  Further, as shown in the drawing, a dot spacer 10 and an insulating layer 11 are provided on the resistance film 6 and the wiring 9 provided on the lower substrate 5, respectively.

  The dot-shaped spacer 10 maintains the upper substrate 4 and the lower substrate 5 at a predetermined interval, and the insulating layer 11 insulates the wiring 8 and the wiring 9 from each other. The resistive film 6 is provided at the input part of the touch panel 20. The wirings 8 and 9 and the insulating layer 11 are provided in a region outside the input portion of the touch panel 20 where the resistance film 6 is not provided.

  Hereinafter, the screen plate (screen printing plate) according to the present embodiment will be described with reference to FIG.

  As shown in FIG. 1, the screen plate 1 according to the present embodiment includes a base material 1 </ b> A (screen plate base material) serving as a base of the screen plate 1.

  The substrate 1A is provided with a plurality of two kinds of holes 2 and 3 as holes for screen printing. The hole 2 (first hole) has a dot shape, and the hole 3 (second hole) has a rectangular shape.

  The holes 2 (first holes) are formed by screen printing dot-like spacers 10 that maintain the upper substrate 4 and the lower substrate 5 provided in the touch panel 20 at a predetermined interval at the input part of the touch panel. It is a hole for.

  The hole 3 (second hole) is a hole for forming an insulating layer 11 for insulating the wirings 8 and 9 provided in the upper substrate 4 and the lower substrate 5 by screen printing.

  In the present embodiment, the hole 2 (first hole) is provided in a dot shape, and the hole 3 (second hole) is provided in a rectangular shape. However, the present invention is not limited to this. Both holes 2 and 3 may be formed in a dot shape or a rectangle.

  The substrate 1A includes a region 2A (first region) in which a plurality of the holes 2 are provided and a region 3A (second region) in which a plurality of the holes 3 are provided.

  In the present embodiment, the region 2A is dotted with a plurality of holes 2, and the region 3A is provided with a plurality of holes 3 arranged in a row. -The arrangement | sequence of 3 is not limited to this.

  Further, the region 2A is provided in the central portion of the base material 1A. The area 2A is an area that overlaps the resistance film 6 when the base material 1A is overlapped with the upper substrate 4 or the lower substrate 5 constituting the touch panel 20 during screen printing (that is, an area corresponding to the input portion of the touch panel 20). ).

  The region 3A is provided around the region 2A. The region 3A is provided along each side (outer edge) of the region 2A. Each region 3A provided along each side of the region 2A is formed in a band shape. A plurality of holes 3 are provided in the belt-like region 3A. In the example shown in FIG. 1, these regions 3A are formed in a frame shape (frame shape) so as to surround the region 2A when viewed from the plane (direction perpendicular to the substrate 1A) of the substrate 1A. Has been.

Thus, according to this Embodiment, the hole 2 for forming the dot-shaped spacer 10 and the hole 3 for forming the insulating layer 11 are provided in one base material 1A. That is, the above-described two types of holes 2 and 3 are formed in the same screen plate 1.

  Therefore, by using the screen plate 1, the dot-shaped spacer 10 and the insulating layer 11 that are conventionally provided in separate steps can be simultaneously formed, and the manufacturing process can be simplified and the cost can be reduced. Can be realized.

  Further, when the screen plate 1 is used, a developing process is not required, and therefore the resistance film 6 provided on the touch panel 20 may be corroded or the surface of the resistance film 6 may be denatured. Can be suppressed.

  Further, in the screen plate 1 of the present embodiment, the first hole 2 is dot-shaped, and the second hole 3 is provided larger than the first hole 2 and the second hole 3 is provided. A plurality of rows are preferably provided in the region 3A.

  Since the first hole 2 is provided in the first region 2A of the screen plate 1 corresponding to the input part of the touch panel 20 which is a display region, it is required to be fine. For this reason, the first hole 2 is preferably point-like. On the other hand, when the upper and lower substrates 4 and 5 are bonded to the second region 3A of the screen plate 1 corresponding to the wiring portion of the touch panel 20 which is a non-display region, the second hole 3 overlaps the wiring 8 9 is provided in order to avoid leakage of the insulating layer 11, the insulating layer 11 formed of an insulating material applied through the second hole 3 by screen printing is connected to the wirings 8 and 9 after the upper and lower substrates 4 and 5 are bonded together. It is preferable to be larger than the first hole 2 so as to cover the whole.

  The second hole 3 is for forming the insulating layer 11 for insulating the wirings 8 and 9 provided in the region outside the input portion of the touch panel 20 by screen printing as described above. Needless to say, the region 3 </ b> A is provided corresponding to the insulating layer forming region of the touch panel 20. Since a plurality of the second holes 3 are provided in the second region 3A, the upper limit of the size is naturally limited by the standard of the touch panel 20 to be manufactured. However, even if the second hole 3 has such a limited size, the larger the shape of the second hole 3, the lower the strength as the screen plate 1.

  Therefore, as described above, the second holes 3 are provided in a plurality of rows in the second region 3A, so that the second region 3A has a space between the holes (more specifically, A linear gap (portion where no hole is provided) is formed between the rows. Therefore, according to said structure, since the durability can be improved, maintaining the intensity | strength of the said screen plate 1, the further cost reduction can be achieved by using the said screen plate 1. FIG.

  Further, according to the above configuration, since the second hole 3 is larger in size than the first hole 2, the upper and lower substrates 4 and 5 are bonded together as described above. The insulating material can be applied in such an amount that the entire wirings 8 and 9 are covered later, and different amounts of insulating material can be applied to the first hole 2 and the second hole 3. Therefore, in the input part of the touch panel 20 which is a display area, the transmittance | permeability fall by the spacer 10 formed of the said 1st hole 2 can be suppressed.

The application amount of the insulating material can be adjusted by adjusting the arrangement and size of the holes 3. Therefore, the arrangement and size of the second hole 3 is such that an appropriate amount of insulating material can be applied to cover the entire wirings 8 and 9 after the upper and lower substrates 4 and 5 are bonded as described above. What is necessary is just to set suitably according to the specification of the touch panel 20, and it is not specifically limited.

  In addition, as an example of the shape and arrangement of the holes 3, although not shown, a configuration in which square holes are arranged in a matrix may be used, and square or rectangular holes are arranged in a staggered manner. It may be a configured.

  The screen plate 1 is preferably a metal screen plate. In the present embodiment, a flat substrate (metal substrate) made of stainless steel is used as the substrate 1A.

  In addition, as said metal, it is not limited to stainless steel, The well-known metal conventionally used for the metal screen plate can be used. That is, the type of the metal is not particularly limited.

  In the screen plate using cloth as the base material, the mesh of the screen cloth is rougher than, for example, holes for forming a dot spacer having a general size. When the spacer 10 is formed, it is difficult to form the dot-shaped spacer 10 in a uniform shape. When the spacer 10 is used repeatedly, the screen cloth eyes are gradually filled with the material of the dot-shaped spacer. There is a possibility that the shape of the dot-shaped spacer 10 gradually changes.

  For this reason, by using a base material made of a metal such as stainless steel as the base material 1A as described above, the durability of the base material 1A, that is, the durability of the screen plate 1 itself can be improved. Cost can be reduced.

  Furthermore, problems that may occur when the above-described cloth screen plate is used can be suppressed.

  The screen plate 1 may be subjected to various treatments for the purpose of imparting rust prevention and solvent resistance to the surface of the substrate 1. Moreover, you may have the structure by which functional films, such as a film and a film which are not shown in figure, which have such performance are provided in the surface of the said base material 1. In addition, when such a functional film is provided on the surface of the substrate 1A, these functional films are also provided with holes having the same shape as the holes for screen printing provided in the substrate 1A. Needless to say.

  Hereinafter, a schematic manufacturing process of the touch panel 20 will be described with reference to FIG.

<Manufacturing process of touch panel 20>
FIG. 3 is a process diagram for explaining a manufacturing process of the touch panel 20 according to the embodiment of the present invention.

  As shown in FIG. 3A, first, a resistance film 6 is formed on the entire upper surface of a transparent glass substrate (lower substrate 5).

  As the resistance film 6, a transparent conductive film formed by sputtering a transparent metal oxide such as ITO (Indium Tin Oxide) or IZO (Indium Zinc Oxide) can be used. In the present embodiment, A film formed by sputtering ITO was used.

  Next, as shown in FIG. 3B, a resist 7 was formed on the resistance film 6 in a desired pattern.

  As a method of forming a desired pattern on the resist 7, when the resist 7 is a photosensitive resist, a desired pattern can be formed by an exposure / development process. Screen printing can also be performed using a plate. In the present embodiment, the screen printing method is used in consideration of the influence of the developer on the resistance film 6 and simplification of the process.

  Thereafter, the resistance film 6 was etched using the pattern of the resist 7 as a mask, and the resistance film 6 was patterned. After patterning the resistance film 6, the resist 7 is removed with a resist stripping solution, and a desired pattern is formed on the transparent glass substrate (lower substrate 5) as shown in FIG. The resistive film 6 having the above was formed.

  In addition, as the resist stripping solution, a hydrochloric acid based stripping solution can be used. However, as the resist stripping solution, it is preferable to use one having a small influence on the resistance film 6.

  As a method for patterning the resistance film 6, a method of cutting only a necessary portion from a state where the resistance film 6 is formed on the entire surface can be used other than the above-described method.

  Next, as shown in FIG. 3D, wiring 9 connected to the resistance film 6 is provided in a portion where the resistance film 6 is not provided (other than the input region in the touch panel 20). Yes.

  In the present embodiment, a silver wiring is used as the wiring 9, but the present invention is not limited to this, and any low resistance wiring can be used.

  Next, as shown in FIG. 3E, the dot-shaped spacer 10 and the insulating layer 11 were formed at the same time using the screen plate 1 already shown in FIG. That is, the dot-like spacer 10 was formed on the resistance film 6 and the insulating layer 11 was formed on the wiring 9 by screen printing at the same time.

  In the present embodiment, the thermosetting resin composition is used for forming the dot-shaped spacer 10 and the insulating layer 11, but a photo-curable resin composition may be used.

  When a thermosetting resin composition is used, a predetermined heat treatment may be performed after screen printing. On the other hand, when a photocurable resin composition is used, an exposure process may be performed after screen printing.

  As the thermosetting resin composition, for example, a monomer such as an epoxy resin or a mixture of an oligomer and an organic solvent can be used. As the photocurable resin, for example, an acrylic resin or the like can be used. It is possible to use a mixture of a monomer or oligomer, an organic solvent and a photoinitiator.

  In the present embodiment, the dot-shaped spacer 10 and the insulating layer 11 are provided on the transparent glass substrate (lower substrate 5) side, but may be provided on the transparent film (upper substrate 4) side. .

  By using the screen printing method, the manufacturing process can be simplified and the cost can be reduced.

  In addition, when the screen printing method is used, a development process is not required, and thus the resistance film 6 provided on the touch panel 20 may be corroded or the surface of the resistance film 6 may be denatured. Can be suppressed.

  That is, in either one of the two substrates 4 and 5 provided in the touch panel 20, the dot-like spacer 10 is insulated on the resistance film 6 and the wiring 8 or the wiring 9 is insulated. The layers 11 are provided so that the resistive film 6 is not denatured.

  According to the above configuration, since the resistance film 6 provided in the touch panel 20 can be prevented from being denatured, in particular, a method of detecting a pressed portion by changing a resistance value of the resistance film. In the touch panel, touch detection accuracy can be further improved.

  Finally, as shown in FIG. 3 (f), the transparent film (upper substrate 4) produced by the steps from FIG. 3 (a) to FIG. 3 (d) and the transparent glass substrate (lower) The touch panel 20 was obtained by laminating the side substrate 5) with an adhesive not shown.

  In the present embodiment, the case where the dot-shaped spacer 10 is formed as described above is described as an example of the spacer, but the present invention is not limited to this. The present invention can be applied to the formation of spacers of various shapes that can be formed by screen printing, such as a lattice, by appropriately changing the shape of the holes 2. Needless to say, the shape of the hole 3 can be changed as appropriate.

  In FIG. 1, the area 2 </ b> A has a rectangular shape (for example, a rectangular shape) according to the shape of the input part of a general touch panel. However, the shape of the area 2 </ b> A matches the shape of the input part of the touch panel 20. What is necessary is just to form, and it does not specifically limit.

[Embodiment 2]
Next, a second embodiment of the present invention will be described based on FIGS. The present embodiment shows a modification in which the durability of the screen plate 1 in the first embodiment is improved.

  For convenience of explanation, members having the same functions as those shown in the drawings of the first embodiment are given the same reference numerals, and descriptions thereof are omitted.

  FIG. 4A is a plan view showing a screen plate 1a according to another embodiment of the present invention, and FIG. 4B shows a dot spacer and an insulating layer formed using the screen plate 1a. It is a figure which shows the positional relationship with wiring.

  FIG. 5 (a) is a plan view showing a screen plate 1b according to still another embodiment of the present invention, and FIG. 5 (b) shows a dot spacer formed using the screen plate 1b. It is a figure which shows the positional relationship of an insulating layer and wiring.

As shown in FIG. 4A, in the screen plate 1a of the present embodiment, the insulating layer 11 is formed in each region 3A provided to face each side of the region 2A. It is preferable that the hole 3a is formed in a rectangular shape, and the longitudinal direction of the rectangular shape and the screen printing direction D1 shown in the figure are provided in parallel. That is, as shown in FIG. 4A, it is preferable that the screen printing direction D1 coincides with the longitudinal direction of the hole 3a having a rectangular shape.

  Similarly, in the screen plate 1b according to still another embodiment of the present invention shown in FIG. 5A, the hole 3b for forming the insulating layer 11 is formed in a rectangular shape in each region 3A. In addition, it is preferable that the rectangular longitudinal direction and the screen printing direction D2 shown in the figure are provided in parallel.

  According to the above configuration, since the longitudinal direction of the rectangular holes 3a and 3b provided to form the insulating layer 11 and the screen printing directions D1 and D2 are parallel, the screen plates 1a and 1b are squeezed. When screen printing is performed so that the squeegee is pressed against the substrate 5, the portion where the squeegee and the rectangular holes 3a and 3b are in contact with each other can be reduced.

  Therefore, since the screen plates 1a and 1b can improve the durability while maintaining the strength, further cost reduction can be achieved by using the screen plates 1a and 1b.

  Further, as shown in FIGS. 4A and 4B and FIGS. 5A and 5B, holes 3a and 3b for forming the insulating layer 11 are formed in the screen plates 1a and 1b. Are the sides (the lower side and the right side in the figure) where the wirings 8 and 9 provided on the upper substrate 4 and the lower substrate 5 overlap each other when the substrates 4 and 5 are bonded together. Is preferably provided so that the area of the region 3A corresponding to the side is larger than sides (the upper side and the left side in the drawing) that do not overlap each other. That is, in the drawing, the total area of the holes 3a and 3b in the region 3A located on the lower side and the right side of the region 2A is larger than the total area of the holes 3a and 3b in the region 3A located on the upper side and the left side of the region 2A. It is preferable that it is provided. In the following description, “upper side”, “lower side”, “right side”, and “left side” in the screen plates 1a and 1b are “upper side”, “lower side”, and “right side” of the region 2A in each substrate 1A. ”And“ Left side ”.

  As shown in FIGS. 4B and 5B, the wiring 8 provided on the upper substrate 4 and the wiring 9 provided on the lower substrate 5 are arranged on the lower side and the right side. overlapping. Therefore, the preferable shapes of the screen plates 1a and 1b in such a case are shown in FIGS. 4 (a) and 5 (a).

  As shown in FIG. 4A, in the screen plate 1a, the lower side is provided so that the total area of the hole 3a is larger than the upper side, and the right side is the hole from the left side. The total area of 3a is provided to be large.

  Similarly, in the screen plate 1b shown in FIG. 5A, the lower side is provided so that the total area of the hole 3b is larger than the upper side, and the right side is the hole 3b from the left side. It is provided so that the total area of

  Therefore, the screen plates 1a and 1b are provided with a region where the total area of the holes 3a and 3b is small, and the durability can be improved while maintaining the strength. By using it, further cost reduction can be achieved.

  FIG. 6A is a plan view showing a screen plate 1c according to still another embodiment of the present invention, and FIG. 6B shows a hole for forming the insulating layer 11 in the screen plate 1c. An example of the wirings 8 and 9 at locations where 3c is not provided is shown.

In the screen plate 1c, the holes 3c for forming the insulating layer 11 are formed by the wirings 8 and 9 provided in the upper substrate 4 and the lower substrate 5 bonding the both substrates 4 and 5 together. It is preferable that it is provided only in a portion overlapping each other.

  That is, as shown in FIG. 6 (a), in the screen plate 1c, the portion where the hole 3c is not provided (the portion circled in the figure) is shown in FIG. 6 (b). As shown in the drawing, when the two substrates 4 and 5 are bonded together, the wiring 8 provided on the upper substrate 4 and the wiring 9 provided on the lower substrate 5 do not overlap.

  According to the above configuration, in the screen plate 1c, it is not necessary to provide the hole 3c for forming the insulating layer 11 in a portion where the wirings 8 and 9 do not overlap. Since the durability can be improved while maintaining, further cost reduction can be achieved by using the screen plate 1c.

  FIG. 7 is a plan view showing an example of a screen plate 1d according to still another embodiment of the present invention.

  As shown in the drawing, the screen plate 1d includes eight regions 2A on the substrate 1A, and a plurality of regions 3A provided around each region 2A so as to face each side of each region 2A. Is provided. Therefore, productivity can be improved by using the screen plate 1d.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and the present invention can be obtained by appropriately combining technical means disclosed in different embodiments. Embodiments are also included in the technical scope of the present invention.

  The present invention can be applied to a touch panel manufacturing method and a touch panel.

1 screen version 1a screen version 1b screen version 1c screen version 1d screen version 1A base material 2 hole (first hole)
2A area (first area)
3 holes (second hole)
3a hole (second hole)
3b hole (second hole)
3A area (second area)
4 Film (upper substrate)
5 Glass substrate (lower substrate)
6 Resistive film 7 Resist 8, 9 Wiring 10 Dot spacer (spacer)
11 Insulating layer 20 Touch panel D1, D2 Screen printing direction (printing direction)

Claims (7)

  1. The substrate is
    Provided with a first region provided with a plurality of first holes for forming, by screen printing, a spacer for maintaining the upper substrate and the lower substrate provided in the touch panel at a predetermined interval at the input part of the touch panel. And
    Around the first region, there is provided a second region in which a plurality of second holes for forming an insulating layer for insulating a wiring provided in a region outside the input portion of the touch panel by screen printing are provided. A screen version characterized by
  2. The first hole is point-like,
    2. The screen plate according to claim 1, wherein the second holes are provided larger than the first holes and are arranged in a plurality of rows in the second region.
  3.   The screen plate according to claim 1, wherein the second hole is formed in a rectangular shape having a printing direction in screen printing as a longitudinal direction.
  4.   When the upper substrate and the lower substrate of the touch panel are bonded together, the second hole is provided only in a portion where the wirings respectively provided on the upper substrate and the lower substrate overlap each other. The screen plate according to claim 1, wherein the screen plate is characterized by the following.
  5.   The second hole is an overlapping portion in a side having a portion where wirings respectively provided on the upper substrate and the lower substrate overlap each other when the upper substrate and the lower substrate of the touch panel are bonded together. The screen plate according to any one of claims 1 to 4, wherein the screen plate is provided so that a total area of the second hole in the side is larger than a side not having the edge.
  6.   The screen plate according to claim 1, wherein the base material is made of metal.
  7. A method of manufacturing a touch panel comprising an upper substrate and a lower substrate provided with a resistance film and wiring connected to the resistance film, wherein the upper substrate and the lower substrate are bonded together,
    The resistive film is provided in an input part of the touch panel, and the wiring is provided in an area outside the input part of the touch panel, in which the resistive film is not provided,
    Screen printing using the screen plate according to any one of claims 1 to 6,
    At the same time as forming a spacer that maintains the upper substrate and the lower substrate at a predetermined interval on the resistance film on either the upper substrate or the lower substrate,
    A method for manufacturing a touch panel, comprising: forming an insulating layer on the wiring to insulate the wiring.
JP2009052592A 2009-03-05 2009-03-05 Screen board and method for manufacturing touch panel using same Pending JP2010205177A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012115685A1 (en) * 2011-02-24 2012-08-30 Cypress Semiconductor Corporation Single layer touch sensor
US8484838B2 (en) 2011-02-24 2013-07-16 Cypress Semiconductor Corporation Method for constructing a capacitance sensing device
US8754662B1 (en) 2013-03-11 2014-06-17 Cypress Semiconductor Corporation Flipped cell sensor pattern
US9292138B2 (en) 2013-02-08 2016-03-22 Parade Technologies, Ltd. Single layer sensor pattern
US9389258B2 (en) 2011-02-24 2016-07-12 Parade Technologies, Ltd. SLIM sensor design with minimum tail effect
US9542042B2 (en) 2011-02-24 2017-01-10 Parade Technologies, Ltd. Scanning a single-layer capacitive sense array
US9658726B2 (en) 2014-07-10 2017-05-23 Cypress Semiconductor Corporation Single layer sensor pattern
CN108582976A (en) * 2018-03-21 2018-09-28 业成科技(成都)有限公司 Halftone

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012115685A1 (en) * 2011-02-24 2012-08-30 Cypress Semiconductor Corporation Single layer touch sensor
US8484838B2 (en) 2011-02-24 2013-07-16 Cypress Semiconductor Corporation Method for constructing a capacitance sensing device
US9952737B2 (en) 2011-02-24 2018-04-24 Parade Technologies, Ltd. Single layer touch sensor
US9389258B2 (en) 2011-02-24 2016-07-12 Parade Technologies, Ltd. SLIM sensor design with minimum tail effect
US9542042B2 (en) 2011-02-24 2017-01-10 Parade Technologies, Ltd. Scanning a single-layer capacitive sense array
US9292138B2 (en) 2013-02-08 2016-03-22 Parade Technologies, Ltd. Single layer sensor pattern
US9547031B2 (en) 2013-03-11 2017-01-17 Parade Technologies, Ltd. Flipped cell sensor pattern
US8754662B1 (en) 2013-03-11 2014-06-17 Cypress Semiconductor Corporation Flipped cell sensor pattern
US9658726B2 (en) 2014-07-10 2017-05-23 Cypress Semiconductor Corporation Single layer sensor pattern
CN108582976A (en) * 2018-03-21 2018-09-28 业成科技(成都)有限公司 Halftone

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