JP2013016026A - Touch panel member, coordinate detector, lamination member, and lamination member manufacturing method - Google Patents

Abstract

Provided are a touch panel member or a laminated member that does not impair thinning and weight reduction while improving member strength, a coordinate detection device using the touch panel member, and a method for producing a laminated member including the touch panel member I will provide a.
A touch panel member 6 includes a touch panel electrode layer 8, 9 and a siloxane resin layer 3a, 3b laminated on a tempered glass substrate 2, and the tempered glass substrate is the touch panel electrode layer. The laminated member is provided by laminating an electrode layer and a siloxane resin layer on a tempered glass substrate, and the tempered glass substrate is the electrode. And a direct supporting substrate for the siloxane resin layer.
[Selection] Figure 2

Description

  The present invention relates to a touch panel member, a coordinate detection device, a laminated member, and a method for manufacturing the laminated member.

  In recent years, touch panels have been attracting attention as input devices that combine display devices and coordinate detection devices. In various technical fields such as portable devices such as mobile phones and portable music playback devices, vending machines, and personal computer screens. The number of installed models is increasing. There are various types of touch panel methods such as resistive film method, capacitance method, optical method, ultrasonic surface acoustic wave method, electromagnetic induction method, etc. from the principle of operation. Therefore, a desirable method tends to be selected.

  In the coordinate detection device, a touch panel in which an electrode layer is provided on a substrate to cause a change in voltage or a change in capacitance when a fingertip or the like comes into contact with the touch surface or is close to contact. A member is provided. The contents of the electrode layer are variously determined depending on the difference in the touch panel system and the like. As the layer configuration of the electrode layer, there are an electrode layer composed of one layer and a laminated electrode layer composed of two or more layers. The electrode layer in the touch panel member generally has an insulating film or a protective layer laminated directly or indirectly on the electrode layer in consideration of its electrical characteristics. The insulating film and the protective layer can be easily patterned by photolithography, and are colorless and highly transparent acrylic resin-based negative photosensitive material (hereinafter sometimes referred to simply as “acrylic resin material”). Is generally formed by. In addition, although the conventional insulating film or protective layer formed using the said acrylic material is based on the process conditions, heat resistance is about 230 degreeC.

  As an example of a general configuration of the touch panel member, for example, a mode in which two electrode materials in which one electrode is formed on one base material is prepared and laminated to form a stacked electrode is general-purpose (for example, Patent Document 1 below, hereinafter also referred to as “Prior Art 1”). However, since such a touch panel member requires two base materials, improvement is desired in terms of thinning and weight reduction, and alignment is also required when the electrode materials are arranged to face each other. Have a problem.

  As another aspect of the touch panel member, there is known a touch panel member (hereinafter, also referred to as “conventional technology 2”) configured by directly forming electrode layers on both sides of a single substrate. (For example, patent document 2). According to the prior art 2, there is no problem of a decrease in alignment accuracy due to the bonding of a plurality of substrates as in the prior art 1, and the touch panel thickness can be reduced as compared with the prior art 1.

By the way, any touch panel member has problems such as thinning, weight reduction, and strength improvement. From the viewpoint of weight reduction and thin film, the prior art 2 is preferable to the prior art 1 because the number of substrates that are support substrates for stacking electrodes can be reduced.
On the other hand, in terms of strength, it is common to add a protective structure such as a protective layer to the touch panel member. For example, FIG. 1 disclosed in Patent Document 1 as an example of the prior art 1 shows a mode in which upper and lower electrode materials are opposed to each other and tempered glass is bonded to the entire lower surface of the lower electrode material.
FIG. 1 disclosed in Patent Document 2 as an example of the prior art 2 shows a mode in which a protective film 4 is deposited on the surface side so as to cover the upper electrode.
In recent years, an example in which tempered glass is used as a cover glass of a touch panel member in a portable device such as a mobile phone equipped with a touch panel has been proposed (for example, Patent Document 3).

  In particular, tempered glass has higher strength than glass that has not been tempered, and is expected to be used as a protective member for touch panel members.

JP2002-278701 JP 04-264613 JP 2010-168252 A

  However, in order to use tempered glass as a protective member for a touch panel member, first, the glass before tempering is processed into a desired shape, and then tempered to form tempered glass. Had to be pasted through. Therefore, since the weight of tempered glass is added in addition to the base material of the touch panel member itself, there has been a problem in terms of reducing the weight of the member. Moreover, there existed problems, such as the point which requires the process which affixes tempered glass, and there exists a possibility that the transparency of a touchscreen may reduce by presence of the adhesion layer between a touchscreen member and tempered glass.

  On the other hand, the present inventors have examined the use of tempered glass as a base material in the prior art 2 and laminating an electrode layer using the tempered glass as a direct support substrate, but there are difficulties due to the following reasons. I understood it. That is, a laminated member such as a touch panel member is formed with an electrode layer or the like so as to laminate two or more effective areas on a multi-faceted large base material, and then the large base material is physically cut using a diamond cutter or the like. A method of obtaining a plurality of members by cutting each effective area is commonly used. However, tempered glass has higher strength than the conventionally used non-strengthened glass substrate, so there is a possibility that it cannot be desirably cut by a physical cutting means, and it is necessary to select a thermal cutting means such as a laser cutting means. There is. However, according to the thermal cutting means, although the tempered glass can be cut, since the cut surface is melted by the heat at the time of cutting, the insulating film or acrylic film material provided on the touch panel member or the like In the protective layer or the like, there is a possibility that the area close to the cut surface is burnt and becomes a foreign substance. Therefore, there is a difficulty in providing a touch panel member using tempered glass as a direct support substrate, and a technique for enabling this is required.

  In addition, the present inventors have found that the above-mentioned touch panel member has problems related to strength improvement, weight reduction, and thinning, not only in the touch panel member but also in various devices such as a solar cell module and a display device. Recognized as a general problem in a laminated member having an electrode layer and an insulating film and / or a protective layer on the material.

  The present invention has been made in view of the above problems, and provides a touch panel member or a laminated member with improved member strength, thinning, and weight reduction, or in other words, thinning and weight reduction while improving member strength. It is an object to provide a touch panel member or laminated member that does not impair the process, and more specifically, a touch panel member that uses tempered glass as a direct support substrate, a coordinate detection device that uses the touch panel member, and a direct support substrate that uses tempered glass It is an object of the present invention to provide a laminated member used as a laminated member and a method for producing a laminated member including the touch panel member.

The present invention
(1) A touch panel electrode layer and a siloxane resin layer are laminated on a tempered glass substrate, and the tempered glass substrate is a direct support substrate for the touch panel electrode layer and the siloxane resin layer. A touch panel member characterized by
(2) The touch panel member according to (1) above, wherein the Young's modulus of the tempered glass substrate is 70 GPa or more,
(3) A laminate in which an electrode layer and a siloxane resin layer are laminated on a tempered glass substrate, and the tempered glass substrate is a direct support substrate for the electrode layer and the siloxane resin layer. Element,
(4) A touch panel member in which a touch panel electrode layer and a siloxane resin layer are laminated on a tempered glass substrate, and the tempered glass substrate is a direct support substrate for the touch panel electrode layer and the siloxane resin layer. The tempered glass substrate is used as a touch surface directly or indirectly, or another substrate provided facing the tempered glass substrate with the electrode layer and / or the siloxane resin layer interposed therebetween is used as the touch surface. A detection circuit that detects an electrical signal output by a contact operation performed directly or indirectly on the touch surface, and coordinates of the contact position where the contact operation is performed are calculated from the electrical signal detected by the detection circuit. A coordinate detection device comprising a calculation circuit for coordinate calculation,
(5) A method for producing a laminated member comprising an electrode layer and a siloxane resin layer on a substrate, wherein a tempered glass substrate is used as the substrate, and the electrode layer and the siloxane resin layer are laminated on the tempered glass substrate in an arbitrary order. A laminating step for forming an effective region including the electrode layer and the siloxane resin layer, and after performing the laminating step, another region located on the entire periphery or part of the periphery of the effective region is formed by thermal cutting means. A method for producing a laminated member, comprising: a cutting step for cutting;
(6) The tempered glass substrate is a tempered glass substrate capable of taking two or more laminate members,
The laminating step is a laminating step in which the electrode layer and the siloxane resin layer are formed on the tempered glass substrate in an arbitrary order, and two or more effective regions including the electrode layer and the siloxane resin layer are formed, and the cutting step is After the said lamination process implementation, it is a cutting process including cutting | disconnecting for every said effective area | region by a thermal cutting means, The manufacturing method of the lamination | stacking member as described in said (5) characterized by the above-mentioned.
(7) The method for producing a laminated member according to (5) or (6), wherein the siloxane resin layer is formed using a siloxane resin composition containing a photosensitive siloxane resin,
(8) The method for manufacturing a laminated member according to any one of (5) to (7), wherein the laminated member is a touch panel member, and the electrode layer is an electrode layer for a touch panel,
Is a summary.

  Since the tempered glass substrate is used, the touch panel member and laminated member of the present invention are excellent in strength. In addition, a conventional touch panel member or laminated member in which non-strengthened glass or resin film is used as a support substrate, and an electrode layer, an insulating film, or a protective layer is formed on the substrate, and then tempered glass is further laminated as a protective material. Compared to this, a reduction in thickness and weight can be achieved.

  Also in the coordinate detection apparatus of the present invention configured using the touch panel member, it is possible to provide an excellent coordinate detection apparatus reflecting the effects of strength improvement, weight reduction, and thinning of the touch panel member.

The manufacturing method of the laminated member of the present invention can provide a laminated member including a touch panel member that is improved in strength, lightened, and thinned without complicating the production process.
And the manufacturing method of the lamination | stacking member of this invention includes the process of cut | disconnecting a tempered glass board | substrate with a thermal cutting means, after making a tempered glass board | substrate into a direct support substrate and laminating and forming a resin layer and an electrode layer on this. By selecting a siloxane resin layer as the resin layer, the problem of burning of the resin layer at the time of thermal cutting is solved, and multi-faced manufacturing of a laminated member using a tempered glass substrate as a direct support substrate, or in a desired shape Cutting was practically possible.

It is a schematic sectional drawing which shows the example of the lamination | stacking aspect of the touchscreen member of this invention. It is a schematic sectional drawing which shows the example of the touchscreen member by which the 1st electrode and the 2nd electrode were laminated | stacked. It is a top view which shows an example of the lamination | stacking aspect of a 1st electrode layer, a 2nd electrode layer, and an insulating film. It is a top view which shows another example of the lamination | stacking aspect of a 1st electrode layer, a 2nd electrode layer, and an insulating film. It is a schematic sectional drawing which shows an example of the usage condition (touch panel member integrated organic electroluminescence display) of the touch panel member of this invention. It is a schematic sectional drawing which shows an example of the usage condition (touch panel member mounting type liquid crystal display device) of the touch panel member of this invention. It is explanatory drawing for demonstrating one embodiment of the flow of operation | movement of the coordinate detection apparatus of this invention. It is explanatory drawing for demonstrating one embodiment of the manufacturing method of this invention. It is explanatory drawing for demonstrating one embodiment of the manufacturing method of this invention. It is sectional drawing which shows one embodiment of the touchscreen member of this invention. It is a schematic sectional drawing of the liquid crystal display device carrying the conventional touch panel member.

[Touch panel member and laminated member]
In the touch panel member of the present invention, a tempered glass substrate is used as a direct support substrate, and a touch panel electrode layer and a siloxane resin layer are laminated on the tempered glass substrate. The present invention provides an electrode layer and a siloxane resin layer using a substrate other than tempered glass as a direct support substrate by “using a tempered glass substrate as a direct support substrate”, and after that, tempered glass is further laminated. Things are excluded. By adopting such a configuration, the strength of the touch panel member or other laminated member can be improved, and the film can be made thinner and lighter than the conventional member in which a tempered glass substrate is further laminated afterwards. .

In the laminated member of the present invention, an electrode layer and a siloxane resin layer are laminated and provided on at least one side of the tempered glass substrate, and the tempered glass substrate is directly connected to the electrode layer and the siloxane resin layer. It is characterized by being a support substrate. In the description relating to the touch panel member of the present invention, which will be described later, instead of the electrode layer for the touch panel, an electrode layer suitable as an electrode layer in other devices other than the touch panel is appropriately selected and implemented, and technical matters specific to the touch panel By excluding it, the laminated member of the present invention can be understood. Accordingly, in the description or aspect of the touch panel member of the present invention described later, descriptions other than the configuration, material, aspect, etc. specific to the touch panel member overlap with the description of the laminated member of the present invention, and therefore description of the laminated member is omitted. To do.
Further, in the following description, the present invention will be described by taking an example in which the electrode layer and the siloxane resin layer are mainly provided only on one surface side of the tempered glass substrate, but the present invention is not limited to this. Similarly, the electrode layer and / or the siloxane resin layer is optionally provided on the other surface side of the tempered glass substrate in accordance with the contents and formation method of the electrode layer and the siloxane resin layer provided on the one surface side of the tempered glass substrate. The aspect is also included in the touch panel member, the laminated member of the present invention, or the method for producing the laminated member of the present invention.

  The example of the lamination | stacking aspect of the touchscreen member of this invention is demonstrated using FIG. FIG. 1A is a schematic cross-sectional view of a touch panel member 1 of the present invention in which a siloxane resin layer 3 is provided on a tempered glass substrate 2 and a touch panel electrode layer 4 is further provided on the siloxane resin layer 3. The siloxane resin layer is a layer that includes polysiloxane, and is a resin layer that can exhibit insulation, good strength, and heat resistance. Therefore, in the touch panel member 1, the siloxane resin layer 3 can exhibit an effect | action as an insulating film and / or a protective layer, for example. As a more specific example, a so-called extraction wiring formed of a metal material or the like is first formed on a tempered glass substrate, and then a touch panel electrode layer 4 may be provided (the illustration of the extraction wiring is omitted). ). In that case, the siloxane resin layer 3 can act as a protective layer for the extraction wiring and as an insulating film between the extraction wiring and the touch panel electrode layer 4 so as to cover at least a part of the extraction wiring. is there.

  As described above, in the touch panel member of the present invention, the siloxane resin layer may be provided as a protective layer and / or an insulating film. However, it is not intended to limit the siloxane resin in the present invention as a protective layer and / or an insulating film. For example, by providing a siloxane resin layer containing titanium at the outermost surface on the touch surface side or at a position close to the outermost surface layer, it is possible to exhibit the effect of antireflection or optical adjustment. Alternatively, in consideration of a device combined with the touch panel member of the present invention, the titanium-containing siloxane resin layer can exhibit an optical adjustment effect on transmitted light such as a backlight. The formation position of the siloxane resin layer is arbitrary. Therefore, the siloxane resin layer in the present invention may be provided as an antireflection layer and / or an optical adjustment layer. Of course, it may be a functional layer expected to have two or more actions such as antireflection, optical adjustment, and surface protective layer.

  Moreover, the touch panel member 1 ′ of the present invention shown in FIG. 1B is the same as the touch panel member 1 shown in FIG. 1A except that the stacking order of the electrode layer 4 for touch panel and the siloxane resin layer 3 is changed. In such an embodiment, the siloxane resin layer 3 can act as a surface protective layer of the touch panel electrode layer 4. Alternatively, when an optional layer is further provided on the opposite side of the siloxane resin layer 3 from the tempered glass substrate 2, it may act as an insulating film between the touch panel electrode layer 4 and the optional layer. It's okay.

  A touch panel member 1 ″ shown in FIG. 1C is configured by laminating a tempered glass substrate 2, a first siloxane resin layer 3 a, a touch panel electrode layer 4, and a second siloxane resin layer 3 b in this order. As in FIGS. 1A and 1B, the first siloxane resin layer 3a and the second siloxane resin layer 3b may be protective layers and / or insulating films. Similarly, a siloxane resin layer shown in FIGS. 1D and 1E described later may be a protective layer and / or an insulating film.

  The touch panel member of the present invention may include not only two or more siloxane resin layers but also two or more touch panel electrode layers. For example, as an aspect of the touch panel member of the present invention, the tempered glass substrate 2, the first electrode layer 8, the first siloxane resin layer 3a, the second electrode layer 9, and the second siloxane resin layer 3b shown in FIG. 1D are laminated in this order. The touch panel member 5 thus formed may be used. Alternatively, as shown in FIG. 1E, as another aspect of the touch panel member of the present invention, the tempered glass substrate 2, the first siloxane resin layer 3a, the first electrode layer 8, and the second siloxane resin layer 3b shown in FIG. 1E are used. The touch panel member 5 ′ may be formed by laminating the second electrode layer 9 and the third siloxane resin layer 3c in this order.

  In addition, although all showed the aspect of the touch panel member of this invention provided with the electrode layer for touchscreens and the siloxane resin layer only in the one surface side of the tempered glass substrate 2, the aspect of the touchscreen member of this invention is shown in FIG. It is not limited to this, The aspect provided with the electrode layer for touchscreens and a siloxane resin layer on the both surfaces side of a tempered glass substrate is also included, respectively. In that case, the electrode layer for touch panel and the siloxane resin layer may have a laminated structure on both sides with the tempered glass substrate as the center, and the touch panel on one side and the other side with the tempered glass substrate as the center. The lamination mode of the electrode layer for use and the siloxane resin layer may be different. Or the electrode layer for touchscreens may be laminated | stacked on the one surface side of tempered glass, and the siloxane resin layer may be laminated | stacked on the other surface side. Thus, in the touch panel member of the present invention in which the touch panel electrode layer and the siloxane resin layer are provided via the tempered glass substrate, the siloxane resin layer can exhibit functions such as antireflection of external light and optical adjustment.

  In addition, FIG. 1 shows an embodiment in which only the electrode layer for touch panel and the siloxane resin layer are provided on the tempered glass substrate 2, but the touch panel member of the present invention is not limited to this and does not depart from the spirit of the present invention. In FIG. 4, any further layers or further arbitrary configurations may be added. For example, an arbitrary layer may be provided on the electrode layer or the siloxane resin layer provided on the tempered glass substrate, or in parallel therewith. Further, a transparent resin layer and a siloxane resin layer may be provided on one side of the tempered glass substrate, and an arbitrary layer or configuration may be provided on the other side.

  The touch panel member of the present invention can be used as a member having a touch panel electrode layer in various types of touch panels. For example, the touch panel member 1, 1 ′, 1 ″ including the touch panel electrode layer 4 shown in FIGS. 1A to 1C can be used as an upper electrode plate or a lower electrode plate in a resistive film type touch panel. In such a case, it is possible to configure a tempered glass substrate as a support substrate instead of a transparent substrate such as a PET film or non-tempered glass generally used for the upper electrode plate or the lower electrode plate. Or it is possible to comprise as a touch panel member provided with the electrode layer of one layer composition in the projection type capacitive touch panel among capacitive touch panels. Alternatively, the touch panel members 1, 1 ′, 1 ″ are capacitive touch panels in which two or more touch panel electrode layers are stacked, and are electrodes in which one touch panel electrode layer is stacked on a substrate. In the aspect of laminating materials, the touch panel member of the present invention may be used as an electrode material on at least one side.

On the other hand, as illustrated in FIGS. 1E and 1D, the touch panel member according to the present invention in which two or more touch panel electrode layers are stacked on one tempered glass substrate has two or more touch panel electrode layers. It can be used for a capacitive type touch panel to be laminated. As one of the more specific modes in FIGS. 1C to 1E, in the touch panel member of the present invention, as the electrode layer for the touch panel, the first electrode layer and the first electrode layer from one surface side of the tempered glass substrate. A touch panel member comprising two layers of a second electrode layer laminated thereon, wherein the siloxane resin layer is provided as an insulating film between the first electrode layer and the second electrode layer Can be provided. Such a specific exemplary embodiment is a touch panel member in which the siloxane resin layer is formed by laminating two electrode layers without using a base material, and exhibits an excellent effect as an insulating film of both electrode layers. And since the strength improvement of the whole touch panel member, thin film formation, and weight reduction are achieved, it is understood that it is one of the outstanding aspects of this invention.
The relationship between the touch panel member of the present invention described above and various types of touch panels using the same is merely an example, and does not limit the use of the touch panel member of the present invention.

  Although the electrode layer and the siloxane resin layer in the touch panel member shown in FIG. 1 are both shown as flat layers, the electrode layer and the siloxane resin layer in the present invention are not limited to this and may be appropriately formed by patterning. .

  A touch panel member 6 of the present invention, which is the same stacking mode as the touch panel member 5 shown in FIG. 1D and in which an electrode layer and a siloxane resin layer are patterned, will be described with reference to FIG. The touch panel member 6 shown in FIG. 2 is provided with a first electrode layer 8 patterned in a desired pattern on the tempered glass substrate 2 and an extraction electrode 7 electrically connected to the end of the first electrode layer 8. The first siloxane resin layer 3 a is provided so as to cover the first electrode layer 8 and a part of the extraction electrode 7. Next, a second siloxane resin layer 3b is provided so as to cover the second electrode layer 9 and the second electrode layer 9 which are patterned in a desired pattern. The first siloxane resin layer 3a and the second siloxane resin layer 3b may be formed as solid layers, or layers formed by patterning so as not to cover a part of the lead-out wiring 7. May be. The touch panel member 6 is provided by laminating two electrode layers, and can be suitably used particularly for a capacitive touch panel from the viewpoint of thinning. At this time, the first siloxane resin layer 3a can function as an insulating film, and the second siloxane resin layer 3b can function as a protective layer. However, the touch panel member 6 is not limited to the application to the capacitive touch panel member, and the effects such as thinning brought about in the present invention are also exhibited as effective effects in other types of touch panel members. Although not shown on the paper surface of FIG. 2, the touch panel member 6 may be provided with an extraction wiring that is electrically connected to the end of the second electrode layer 9.

  When the touch panel member 6 is applied to a capacitive touch panel, the laminated pattern of the first electrode layer 8 and the second electrode layer 9 is a capacitive touch panel member in which two electrode layers are laminated. As long as it is a laminated pattern of laminated electrodes applicable to the above, it may be selected as appropriate. As an example, FIG. 3 shows a schematic top view of the touch panel member 6 having a top surface on which the first electrode layer 8 and the second electrode layer 9 are laminated. In FIG. 3, the lead-out wiring 7 and the siloxane resin layers 3a and 3b in the touch panel member 6 are not shown. The laminated pattern of the first electrode layer 8 and the second electrode layer 9 shown in FIG. 3 was formed by patterning on the tempered glass substrate 2 so that the regularly arranged diamond-shaped electrode portions were continuous in the y direction. A siloxane resin layer 3a (not shown) is formed on the first electrode layer 8, and then a second electrode layer 9 is formed by patterning so that regularly arranged diamond-shaped electrode portions are continuous in the x direction. It is configured. A siloxane resin layer 3b (not shown) may be further formed on the second electrode layer 9.

In addition, in the aspect which provides two or more electrode layers, the touch panel member of this invention includes the aspect which provides one electrode layer in the one surface side of a tempered glass substrate, and provides the other electrode layer in the other surface side of tempered glass. . As an example of the laminated pattern of the electrode layers in this case, for example, as shown in FIG. 4, diamond-shaped electrode portions regularly arranged on one side of the tempered glass substrate 2 are continued in the y direction. A touch panel member provided with the second electrode layer 10 provided with the first electrode layer 8 formed in such a pattern and having the diamond-shaped electrode portions regularly arranged on the other surface side continuous in the x-direction. It is done.
In the embodiment shown in FIG. 4, the siloxane resin layer not shown is provided between the tempered glass substrate 2 and the first electrode layer 8, between the tempered glass substrate 2 and the second electrode layer 10, on the first electrode layer 8, And at least one of the second electrode layers 10.
In addition, the lamination pattern of the first electrode layer and the second electrode layer is not limited to the above, for example, a pattern in which the first electrode layer and the second electrode layer formed in a stripe shape intersect in top view, or A plurality of diamond-shaped electrode portions in which one electrode layer is regularly arranged, and the other electrode layer connects a plurality of diamond-shaped electrode portions adjacent to each other in the x-axis direction or the y-axis direction when viewed from above; Although the pattern etc. which have a bridge-shaped electrode part are illustrated, it is not limited to this.

  1 is replaced with an electrode layer required for a device other than the touch panel so that the lamination mode explained using FIG. 1 is the laminated member of the present invention. It can be understood as an embodiment. Specific examples of devices that can use the laminated member of the present invention include, but are not limited to, solar cell modules, thin film transistors including electrode layers, and electrode substrates of various display devices.

(Tempered glass substrate)
The tempered glass substrate used in the present invention is a substrate that uses tempered glass that has been treated to improve the properties of the glass substrate that are brittle against impact or have insufficient scratch resistance due to physical impact. In general, the tempered glass includes a glass whose impact resistance is improved by performing a treatment for improving the compressive stress on the glass surface as compared with the glass before the treatment. A tempering method for obtaining tempered glass is not particularly limited, but an ion exchange method or an air cooling tempering method is widely known as means for obtaining chemically tempered glass. Moreover, the heat-strengthened glass obtained by a heat-strengthening process, the laser-treated glass obtained by the laser process etc. which are disclosed by the patent 3956286 etc. can be used as a tempered glass board | substrate in this invention, and are not limited to these.

  In particular, the ion exchange method can reinforce thin-film glass and is suitable as a method for obtaining a tempered glass substrate used in the present invention. In the ion exchange method, a treatment liquid containing appropriate ions such as potassium ions is prepared, and glass containing a substitutable ion such as sodium ions is immersed in the treatment liquid. This is a method of exchanging replaceable ions and ions contained in the treatment liquid. At this time, the sodium ions in the glass are exchanged with potassium ions larger than this, whereby the inside of the surface layer of the glass is compressed, and as a result, the strength of the glass is improved.

  The tempered glass is distinguished from the glass before the tempering treatment. Glass before tempering includes what is called blue plate glass, green plate glass, tempered untreated glass, and the like. Commercially available tempered glass includes, for example, Corning Gorilla FIT Glass (Gorilla FIT Glass), Gorilla Glass (registered trademark), Asahi Glass Dragontrail (registered trademark), Nippon Sheet Glass Examples include, but are not limited to, chemically tempered glass (FL3.2) manufactured by the company.

In particular, as the tempered glass substrate in the present invention, one having a Young's modulus of 70 GPa or more is preferably selected. If the touch panel member of the present invention uses a tempered glass substrate having a Young's modulus of 70 GPa or more, the stress on the touch force received from the touch surface side is particularly high. Therefore, in the present invention using a tempered glass substrate having a Young's modulus of 70 GPa or more, the inside of the device is pressed by a pressing force with a finger or a touch pen, and the effect of preventing failure and functional deterioration of the device becomes sufficiently high. is there. More specifically, for example, when the liquid crystal display device and the touch panel member of the present invention using a tempered glass substrate having a Young's modulus of 70 GPa or more are combined, the liquid crystal elements inside the device are pressed by touch from the touch surface. It is possible to satisfactorily prevent the occurrence of display defects on the display.
In addition, a tempered glass substrate having a Young's modulus of 70 GPa or more has particularly high scratch resistance. Therefore, when the tempered glass is designed as a touch surface, an excellent anti-scratch effect on the surface is exhibited.
However, the above-described effects such as excellent stress on the touch force of the tempered glass substrate and scratch resistance are not the effects that are exhibited for the first time when the tempered glass substrate having a Young's modulus of 70 GPa or more is used in the touch panel member of the present invention, The effect is particularly high in a tempered glass substrate of 70 GPa or more. Note that the Young's modulus of the tempered glass substrate in the present invention is preferably higher from the viewpoint of strengthening the glass, and is not particularly limited. Therefore, considering the appropriate thickness, weight, etc. of the touch panel member as a substrate. It may be determined as appropriate. The Young's modulus of the tempered glass substrate can be measured by JIS standard R1602 (measuring the elastic constant of a ceramic at room temperature).
In addition, regarding the tempered glass having the Young's modulus described above, excellent performances such as stress and scratch resistance are exhibited as excellent characteristics in the laminated member of the present invention. Therefore, also in the laminated member of the present invention, it is preferable to use a tempered glass having a Young's modulus of 70 GPa or more because the effects described above can be enjoyed.

  The Young's modulus of the glass substrate depends on the components constituting the glass substrate, and is largely dependent on the thickness of the substrate. The thickness of the glass substrate before the strengthening treatment used for the conventional touch panel member is generally about 2 to 3 mm, and the Young's modulus shown at this time is generally 50 GPa to less than 70 GPa. However, the tempered glass used in the present invention can exhibit a Young's modulus of 70 GPa or more when the thickness of the substrate is about 0.5 mm to 1.8 mm.

  Since the tempered glass is tempered as described above, it is difficult to desirably cut it by a cutting means (non-thermal cutting means) using physical pressure such as a diamond cutter. This tendency is particularly remarkable in tempered glass having a Young's modulus of 70 GPa or more. Therefore, it is possible to cut by selecting a thermal cutting means such as laser cutting, gas cutting, plasma cutting, electric discharge cutting or the like as the cutting means for tempered glass. Considering the production of the touch panel member or the laminated member of the present invention, it is desirable to form the siloxane resin layer so that no burning or the like occurs during the thermal cutting of the tempered glass substrate used in the present invention. Alternatively, the type and thickness of the tempered glass used in the present invention may be determined in consideration of the heat resistance of the siloxane resin layer in the present invention.

  The thickness of the said tempered glass board | substrate is not specifically limited, You may select suitably the thickness suitable for the device in which the touch panel member or laminated member of this invention is used. Alternatively, the thickness of the tempered glass substrate may be appropriately determined depending on whether the tempered glass substrate is scheduled to be located on the touch surface side or is located on the inner side (in-cell) of the device. For example, when a capacitive touch panel member including a first electrode layer and a second electrode layer is used, and the tempered glass substrate directly or indirectly becomes a touch surface, the thickness of the tempered glass substrate is 0. It is desirable that it is 5 mm or more and 1.8 mm or less. Thereby, the strength as a touch surface can be sufficiently exhibited.

  In general, the tempered glass substrate is desirably transparent when it is planned to be located within a display surface of a device having a display function including a touch panel. The degree of transparency of the tempered glass is not particularly limited, as long as the transparency of the device itself including the touch panel and the display performance of the device using the touch panel member or the laminated member are ensured.

(Electrode layer)
The touch panel electrode layer in the touch panel member of the present invention may be a layer that forms an electrode provided for sensing when a finger or the like is in contact with or close to contact on the touch surface. An electrode layer that can be provided on the base material of the member can be appropriately selected. The electrode layer for a touch panel in the present invention may be composed of one layer or two or more layers. When two or more electrode layers are provided on one side of the tempered glass substrate, two or more electrode layers are provided. Any of those provided and one or more electrode layers provided on both sides of the tempered glass substrate may be used.

  As the electrode layer in the laminated member of the present invention, an electrode layer that can be provided on a substrate in a device other than a touch panel can be appropriately selected. The number of electrode layers, the case of being provided on one side of the tempered glass substrate, and the case of being provided on both sides are the same as the electrode layer for touch panel described above.

Hereinafter, the electrode layer in the present invention will be described in detail by taking an electrode layer for a touch panel as an example.
In general, the electrode layer for a touch panel is mainly provided in a surface that can sense that a finger or the like is in contact with or close to contact on the touch surface. When the touch panel member is planned to be used in combination with a device having a display function, the electrode layer is generally designed to be included in the display area plane of the device. However, the end portion of the electrode layer may extend to the outside of the surface that can be sensed or the outside of the display area surface.

The electrode layer for a touch panel is generally formed of a light transmissive material from the viewpoint of not hindering the visibility and display properties of the touch panel. However, depending on the pattern of the selected electrode layer, it may be formed of a material that does not transmit light, such as a pattern formed in a small area that is not visible on the touch surface or the display surface. Examples of the material constituting the electrode layer include indium oxide-based transparent electrode materials such as indium tin oxide (ITO), indium oxide, and indium zinc oxide (IZO), or tin oxide (SnO ₂ ) and zinc oxide (ZnO). A transparent conductive film, a conductive oxide such as polyaniline, polyacetylene, or the like can be used, but the material is not limited to this. Alternatively, when the touch panel member of the present invention is to be used for a wire sensor touch panel, the electrode layer may be formed of a conductive wire. When two or more electrode layers are provided on a single tempered glass substrate, each electrode layer may be made of the same material or different materials.

  The thickness of the electrode layer for a touch panel in the present invention is not particularly limited, and is generally about 10 nm to 500 nm, preferably about 10 nm to 100 nm.

(Siloxane resin layer)
The siloxane resin layer in the present invention is a layer containing polysiloxane, and includes both a layer substantially consisting of polysiloxane and a layer containing any component and any element in addition to polysiloxane. The siloxane resin layer in the present invention can exhibit excellent properties in terms of insulation, heat resistance, hardness, and the like, but this property is presumed to be due to the layer structure of a resin skeleton composed of polysiloxane. Since the siloxane resin layer exhibits the above-described excellent properties, the insulating film and the insulating film and the electrode layer for the touch panel on the tempered glass substrate or the electrode layer other than the touch panel are laminated directly or indirectly. The function as a protective layer can be exhibited. The electrode layer is desirably laminated with an insulating film in order to cause its electrical action to work as designed. Therefore, by laminating an insulating siloxane resin layer, the electrical action of the electrode layer is improved. Desirably implemented. In addition, when a device such as a touch panel is used for a post-manufacturing process after the electrode layer is formed, a member is transported, or a finished product is used, if the electrode layer is physically or chemically damaged, the function of the touch panel or device There is a risk that it will not be implemented well. Therefore, it is desirable to provide a protective layer on the electrode layer. At this time, the protective effect can be improved by making the protective layer a siloxane resin layer having excellent hardness and heat resistance as compared with a protective layer formed from a conventional acrylic resin material. However, the above is not intended to limit the embodiment in which the siloxane resin layer in the present invention is used as an insulating film and / or a protective layer. The purpose of the lamination of the siloxane resin layer in the present invention may be appropriately understood including insulating properties and protective properties within a range of various properties mainly due to provision of a polysiloxane skeleton.

  The siloxane resin layer can exhibit an insulation property equal to or higher than that of a resin layer formed from an acrylic resin or the like, and the degree of insulation of the siloxane resin layer is not particularly limited. However, the lamination of the siloxane resin includes a case where it is required to function as an insulating film, a case where a function as a protective layer is required, or both cases. It is desirable to set the withstand voltage to about 200 V to 500 V in consideration of the subsequent breakdown due to static electricity, etc. The desired withstand voltage is determined depending on the type of siloxane resin material used and the siloxane resin layer. It can be adjusted by the thickness or the like.

  Although the heat resistance of a siloxane resin layer is not specifically limited, Generally, the heat resistance of about 400 degreeC-500 degreeC may be shown. Therefore, even when the tempered glass substrate is thermally cut at a temperature of 400 ° C. to 500 ° C. or higher than 500 ° C. and the cut surface is melted, scorching can be well prevented in the region near the cut surface of the siloxane resin layer. . Further, the hardness of the siloxane resin layer is not particularly limited, but a structure of 4H or more can be shown in a pencil hardness test in JIS K 5600-5-4. Therefore, especially when a siloxane resin layer is provided as a protective layer, it is desirable to configure the siloxane resin layer so that the hardness is 4H or more. The physical properties such as heat resistance or hardness of the siloxane resin layer are appropriately adjusted depending on the content of the siloxane resin (polysiloxane) contained in the siloxane resin layer, the type of siloxane resin selected, and the mixing of two or more siloxane resins. Good.

  When the siloxane resin layer is formed in two or more layers in the touch panel member or the laminated member, each layer may be composed of substantially the same polysiloxane, or different polysiloxanes may be formed. It may be contained. However, if each layer is made of polysiloxane substantially the same, the shrinkage rate of each siloxane resin layer can be made the same, so that it is desirable to easily manufacture a touch panel member or a laminated member as designed. In addition, since the refractive index of each siloxane resin layer is the same, it is desirable that optical reflection can be prevented. In the present invention, “two or more siloxane resin layers are composed of substantially the same polysiloxane” means that when one siloxane resin layer contains only one kind of polysiloxane, each siloxane resin. It means that the structural formulas of the polysiloxanes constituting the layers are the same. On the other hand, when one siloxane resin layer is composed of a combination of two or more polysiloxanes, it means that the combination of polysiloxanes in each siloxane resin layer is the same, up to the content ratio of the combined siloxane resins Do not ask for their identity.

  Examples of the additive arbitrarily added to the siloxane resin layer include, but are not limited to, titanium, silica particles, a photoacid generator, a thermal acid generator, or a residue thereof. In the range which does not deviate, other components other than polysiloxane may contain in the siloxane resin layer. The content of other components is not particularly limited, and properties that are not inconvenient in a touch panel in which the touch panel member of the present invention is used or a device in which the laminated member of the present invention is used, such as transparency, insulation, and curing. May be appropriately adjusted so as to show properties, heat resistance, and the like.

The thickness of the siloxane resin layer is not particularly limited, but is determined in consideration of the functions required of the siloxane resin layer, the withstand voltage, the function of the device that is expected to use the laminated member including the touch panel member including the siloxane resin layer, and the like. It is desirable to form the thin film as long as it can exhibit the functions to be achieved. The merit of designing the thickness of the siloxane resin as small as possible is as follows.
That is, in the laminated member scheduled to be used for a touch panel member or a device having a display function, the insulating film and the siloxane resin layer as the protective layer have high transmittance in the entire visible light region and are almost colorless and transparent. Although it is preferable, since it has an absorption band in the short wavelength region of the visible light region, it may be slightly colored yellow. Such coloring is not preferable in view of the display function of the device. In addition, when a siloxane resin layer is formed using a photosensitive siloxane resin, the exposure area increases due to the influence of diffracted light at the time of exposure as the film thickness is set larger. Problems such as deterioration can also occur. Therefore, in order to avoid the above-mentioned coloring problem and resolution deterioration, it is preferable that the siloxane resin layer is formed with a minimum necessary thickness within a range satisfying the withstand voltage. In general, the insulating film and the surface protective layer are preferably formed to have a thickness of 0.5 μm to 3.0 μm. Further, when the siloxane resin layer is required for optical adjustment or antireflection effect, the thickness of the layer is preferably 30 nm or more and 100 nm or less, particularly about 40 nm to 70 nm or less.

(Arbitrary configuration)
The touch panel member of the present invention or the laminated member of the present invention may be provided with any configuration including an arbitrary layer within the scope of the present invention, in addition to the electrode layer and the siloxane resin layer, on the tempered glass substrate. .

  FIG. 10 shows an example of the touch panel member of the present invention provided with an arbitrary configuration. The touch panel member 71 according to the present invention shown in FIG. 10 has a patterned first electrode layer 73 and a second transparent electrode layer 74 laminated on the tempered glass substrate 72 located on the touch surface side. A first siloxane resin layer 75 patterned as an insulating film is provided between the one electrode layer 73 and the second electrode layer 74. A lead-out wiring 77 that is electrically connected to the end portion of the first electrode layer 73 is provided. Thus, in the present invention, the extraction wiring may be provided as an arbitrary configuration, and may further have an extraction wiring that does not appear in FIG. 10 and is electrically connected to the end of the second transparent electrode layer 74. good. At this time, the second siloxane resin layer 76 is provided so as to cover the extraction wiring 77, thereby protecting and insulating the extraction wiring 77.

  The lead-out wiring is electrically conductive by electrical connection with the electrode layer, and helps current flow between the circuit and the electrode layer connected to the touch panel member. Accordingly, the conductive material is used. Further, the extraction wiring is provided in a non-operation area (non-display area) located outside the operation area (display area) that can detect that a finger or the like on the touch panel member is in contact with or close to contact. In such a case, it does not matter whether light is transmitted or not. The extraction wiring can be formed using a metal material such as silver or copper having high conductivity. More specifically, examples of the metal material constituting the extraction wiring include a metal simple substance, a metal composite, a metal / metal compound composite, and a metal alloy. Examples of the simple metal include silver, copper, gold, chromium, platinum, and aluminum. Examples of the metal composite include MAM (Mo-Al-Mo, that is, a three-layer structure of molybdenum, aluminum, and molybdenum), and examples of the composite of metal and metal compound include a chromium oxide / chromium laminate. Etc. can be illustrated. As the metal alloy, a silver alloy or a copper alloy is generally used. Moreover, APC (Au * Pd * Cu, ie, silver * palladium * copper) etc. can be illustrated as a metal alloy.

  The touch panel member 71 is provided with a frame layer 78 as another arbitrary configuration. The frame layer 78 is formed in a non-operation area (non-display area) on the tempered glass substrate 72 and has a role of covering the take-out wiring 77 and preventing the visual recognition of these when observed from the touch surface side. . Therefore, the frame layer 78 is generally black, but it is not necessary to limit the frame layer 78 to black. The frame layer 78 may be opaque as long as the extraction wiring 77 is not visible from the touch surface side. Alternatively, it may be a colored opaque layer. By providing the frame layer 78, the design from the touch surface side of the touch panel member can be improved. The frame layer 78 can be formed by a known means such as a photolithographic method or screen printing using a material such as ink or paste that can exhibit opacity. The thickness of the frame layer 78 is arbitrary, but in order to exhibit sufficient design properties, it is common to form the frame layer 78 to a thickness of about 0.8 μm to 2 μm in consideration of the type of ink or paste used. .

  Further, the touch panel member 71 may be optionally provided with a protective paste layer 79 so as to cover a part or substantially the entire surface of the second siloxane resin layer 76. By providing the protective paste layer 77, it is possible to protect the metal wiring in the lower layer. The protective pace and layer 77 may be transparent or opaque. For example, if the protective paste layer 77 is opaque, it can be formed by the same material and method as the frame layer 78 described above. it can.

  Moreover, since the tempered glass base material 72 is scheduled to be located on the touch surface side, the touch panel member 71 is provided with a protective layer 80 on the substantially entire surface opposite to the touch surface, and the touch panel member 71 and other devices are provided. The first transparent electrode layer 73 and the second transparent electrode layer 74 may be protected when combining the two or when the touch panel member 71 is transported. The protective layer 80 may be composed of a siloxane resin layer. Alternatively, the protective layer 80 may be formed of a transparent resin layer such as a transparent resin film or an acrylic resin. In such a case, when the touch panel member of the present invention is obtained from a multi-faced substrate by thermal cutting means, When processing into a desired shape by the cutting means, it is desirable to provide the protective layer 80 after the thermal cutting means.

(Touch panel member integrated organic EL display)
Below, the example of the usage condition of the touchscreen member of this invention is demonstrated using drawing. FIG. 5 is a schematic cross-sectional view of the touch panel member-integrated organic EL display device 11 which is an example of an embodiment of the touch panel member-integrated display device, cut in a substantially normal direction with respect to the substrate surface. The touch panel member integrated type means a mode in which the substrate in the touch panel member is also used as a substrate of a device to be combined.

The touch panel member-integrated organic EL display device 11 relates to the touch panel member of the present invention, and is also understood as a usage mode in which a tempered glass substrate is combined with a device so as to be directly or indirectly positioned as a touch surface.
When the tempered glass substrate is directly positioned as a touch surface, as shown in FIG. 5, one side of the tempered glass is exposed to the user side, and the user touches or uses the touch panel in a state close to contact. It means to be a face. On the other hand, when the tempered glass substrate is indirectly positioned as a touch surface, for example, an additional layer such as an antireflection film or a member is laminated on the exposed surface side of the tempered glass, and when the user contacts the touch surface, It means an embodiment in which the tempered glass is not touched directly.

The touch panel member-integrated organic EL display device 11 is configured using the touch panel member 12 and the organic EL substrate 21 of the present invention.
The touch panel member 12 is provided with a first electrode layer 14 on one side of the tempered glass substrate 13, then a siloxane resin layer 15 is provided on the first electrode layer 14, and a second electrode layer 14 ′ is further provided. And configured. Each of the first electrode layer 14 and the second electrode layer 14 ′ is patterned in an appropriate pattern so as to function as a laminated electrode of the touch panel member. In the drawing, the extraction wiring is not shown, but in the touch panel member combined with the organic EL substrate, the extraction wiring may be made of a conductive material such as a metal generally understood as the extraction wiring. Further, for light extraction, it may be formed as a transparent electrode such as a transparent conductive film made of a metal oxide.

On the other hand, the organic EL substrate 21 is configured by providing an organic EL element 23 on a transparent substrate 22. In general, the organic EL element 23 is formed with a driving circuit including TFTs on a transparent substrate 22, and a flattening film or a protective film is provided on the driving circuit as necessary. By forming a metal electrode using a known material as a metal electrode in an organic EL element such as Au, and then forming an organic layer including a light emitting layer from a known material, and then forming a metal electrode. Composed. However, the configuration of the organic EL element or the organic EL substrate including the organic EL element in the present invention is not limited thereto, and a conventionally known organic EL substrate may be appropriately selected and combined with the touch panel member.
And it can manufacture by mutually combining in the direction which the 2nd electrode layer 14 'side in the touch panel member 12 and the organic EL element 23 side in the board | substrate 21 for organic ELs face. At this time, an appropriate distance is maintained between the two substrates, for example, by a spacer 24 or the like.

  As a comparison, FIG. 11 shows a schematic cross-sectional view of a conventional touch panel member-integrated organic EL display device 100. The touch panel member 101 used in the touch panel member-integrated organic EL display device 100 uses a glass substrate or a transparent resin film that has not been reinforced as the transparent substrate 102 as a direct support substrate of the touch panel member 101, and The touch panel member 12 has the same configuration except that the acrylic resin layer 104 is used between the first electrode layer 14 and the second electrode layer 14 ′. The tempered glass 105 is provided on the exposed surface side of the transparent substrate 102 in order to combine the touch panel member 101 and the organic EL substrate 21 and improve the scratch resistance and strength of the touch surface. An adhesive layer (not shown) is provided between the tempered glass 105 and the transparent substrate 102, and the tempered glass 105 is attached to the transparent substrate 102 after being aligned.

  The touch panel member-integrated organic EL display device 11 has a tempered glass substrate 13 serving as a touch surface, so that the scratch resistance and strength of the touch surface are improved, and the touch panel member-integrated organic EL display device 100 and In comparison, since the transparent substrate 102 is omitted, the device is preferably made thinner and lighter. In addition, in the touch panel member-integrated organic EL display device 100, in order to provide the tempered glass 105, an adhesive layer (not shown) is provided between the transparent substrate 102 and the tempered glass 105. However, according to the use of the touch panel member of the present invention, there is no such fear.

(Touch panel member-mounted liquid crystal display)
Next, examples of different usage modes of the touch panel member of the present invention will be described with reference to the drawings. FIG. 6 is an example of an embodiment of the touch panel member-mounted liquid crystal display device, and is a schematic cross-sectional view of the illustrated touch panel member-mounted liquid crystal display device 31 when cut in a substantially normal direction with respect to the substrate surface. The touch panel member mounting type means an aspect in which the substrate in the touch panel member is not used as the substrate of the device to be combined, and the substrate in the touch panel member and the substrate of the device to be combined are overlapped by any means.

The touch panel member-mounted liquid crystal display device 31 is configured using the touch panel member 32 of the present invention and the liquid crystal display device 41.
The touch panel member 32 is provided with a first electrode layer 34 and an extraction wiring 36 electrically connected to an end of the first electrode layer 34 on one surface side of the tempered glass substrate 33, and then the first electrode layer A first siloxane resin layer 35 is provided on 34, a second electrode layer 34 ′ is provided, and a second siloxane resin layer 35 ′ is provided to cover the second electrode layer 34 ′. The first electrode layer 34 and the second electrode layer 34 ′ are each patterned in an appropriate pattern so as to function as a laminated electrode of the touch panel member. A transparent substrate 38 is provided on the touch panel member 32 as a counter substrate of the tempered glass substrate 33 via a spacer 37 to form a touch panel 39. Like the touch panel 39, the touch panel member of the present invention may further include a counter substrate of a tempered glass substrate to constitute a touch panel. A transparent glass substrate, a transparent film substrate, or the like is preferably used as the counter substrate, but is not limited thereto.

  On the other hand, the liquid crystal display device 41 has a configuration in which the display side substrate 43 and the electrode substrate 48 are opposed to each other, are closely attached with a space provided between the substrates by the sealing member 50, and the driving liquid crystal material 49 is filled in the space. can do. The display-side substrate 43 is provided with a black matrix 45 on a transparent substrate 42, and then a colored layer 46 including a red colored portion 44R, a green colored portion 44G, and a blue colored portion 44B. A driving liquid crystal material alignment film 47 is provided on the colored layer 46. The electrode substrate 48 is configured by providing a liquid crystal driving circuit and a liquid crystal driving electrode (not shown) on a transparent substrate. The liquid crystal display device 41 is merely an example, and may be any device that is generally understood as a liquid crystal display device using a driving liquid crystal material. The touch panel member of the present invention can be mounted so that the transparent substrate constituting the display side substrate in the known liquid crystal display device and the tempered glass substrate of the touch panel member of the present invention directly or indirectly overlap. Similarly, in a device including another display device such as an organic EL display device, the substrate on one side of the device such as the display side substrate and the tempered glass substrate of the touch panel member of the present invention are directly or indirectly overlapped. , Can be mounted on top of each other.

  The touch panel member-mounted liquid crystal display device 31 shown in FIG. 6 relates to the touch panel member of the present invention, and is understood as a usage mode in which the tempered glass substrate is combined with the device so as to be positioned on the device side (in-cell) instead of the touch surface side. . According to this usage mode, the strength of the device itself can be improved. Moreover, even if the tempered glass substrate is broken by any chance, the tempered glass substrate is located on the device side (in-cell), so that scattering of glass fragments with respect to the surroundings can be suppressed to a low level.

  In addition, the aspect shown in FIG. 6 does not limit the usage aspect which mounts the touch-panel member of this invention in arbitrary devices. For example, in FIG. 6, the touch panel 39 can be mounted on the liquid crystal layer display device 41 upside down on the paper. In this case, the tempered glass substrate 33 becomes a touch surface, which can improve the strength and the like on the touch surface side of the liquid crystal display device 31 with the touch panel member mounted thereon. There is an advantage that thinning and weight reduction are not impaired.

[Coordinate detector]
Next, the coordinate detection apparatus of the present invention will be described. Using the touch panel member of the present invention described above, a detection circuit that detects an electrical signal output from the electrode layer by a contact operation performed directly or indirectly on the touch surface, and the electrical signal detected by the detection circuit The coordinate detection device of the present invention can be configured by including a coordinate calculation arithmetic circuit that calculates the coordinates of the contact position where the contact operation is performed.

In the coordinate detection apparatus of the present invention, since the direct support substrate in the touch panel member used is tempered glass, the strength is improved, and it is advantageous from the viewpoint of thinning and weight reduction. In particular, an aspect in which a tempered glass substrate is provided on the touch surface side is preferable because it can improve the strength and scratch resistance of the touch surface against physical impact caused by contact with a finger or a touch pen. In addition, the present invention improves the strength of the touch surface by using the tempered glass as compared with the conventional coordinate detection device in which the touch surface is reinforced by attaching the tempered glass to the transparent substrate on the touch surface side via an adhesive layer. In addition, there is no risk of scattering of transmitted light by the adhesive layer.
On the other hand, in the coordinate detection device of the present invention in which the tempered glass substrate is positioned on the side opposite to the touch surface, the tempered glass substrate is expected to improve the strength of the coordinate detection device itself, and in the unlikely event tempered glass is used. Even if the glass is broken, the scattering of glass fragments to the surroundings can be kept small.

The detection circuit in the coordinate detection apparatus of the present invention is a circuit that can detect an electric signal generated by touching or touching the touch surface of the touch panel member.
Below, the coordinate detection device of the present invention using a capacitive touch panel member will be described as an example. The coordinate detection apparatus is configured such that when a conductor such as a finger comes into contact with a touch surface of a touch panel member or approaches the touch surface in a state close to contact, an alternating current is generated due to a change in capacitance at the coordinate where the contact operation is performed. And a coordinate calculation calculation circuit for calculating the coordinate position where the contact operation has been performed based on a predetermined calculation formula from the amount of change in capacitance output from the detection circuit. . The touch panel member and the detection circuit may be connected so that the contact operation on the touch panel member can be detected as an electric signal. For example, when using a touch panel member in which the electrode layer is patterned in two layers via an insulating film, from the tempered glass substrate side, the first electrode layer, the insulating film, and the second electrode layer in this order. The first wiring layer and the extraction wiring provided at the end portions of the first electrode layer and the second electrode layer are electrically connected to the detection circuit by a wiring member such as a flexible printed circuit.

  FIG. 7 is an explanatory diagram for explaining an embodiment of the operation flow of the coordinate detection apparatus of the present invention. The touch panel member shown on the left side of the drawing particularly shows an electrode layer. Specifically, a plurality of first transparent electrode portions X1, X2, X3,... Constituting the first electrode layer and a current flowing in the x direction, and a current flowing in the y direction constituting the second electrode layer. A plurality of second transparent electrode portions Y1, Y2, Y3. A current is supplied to the first transparent electrode portions X1, X2, X3... And the second transparent electrode portions Y1, Y2, Y3. At this time, the current is continuously turned on by the switching unit that switches the connection to each electrode in response to the switching instruction in the high-speed switch unit based on the specified time indicated by the reference clock. , May be switched off.

  When there is no contact operation on the touch surface of the touch panel member, an alternating current basically does not flow and the initial value is zero. However, when the contact operation is performed, an alternating current flows due to the generation of capacitance, resulting in a voltage drop. Occurs. The detection circuit is configured to intermittently send a current to each electrode while being switched as described above, and to detect a resistance change by a current of each electrode by a current detection circuit that detects a change in the current. The amount of voltage drop due to the change in current is amplified and output by the amplifier circuit in the integrating capacitor, passes through a low-pass filter to remove impulse noise, and is amplified by the reference voltage and integrating capacitor in the comparator. The time until the integrating capacitor reaches the reference voltage is recognized by comparing the voltages. A signal based on the change in the capacitance of the electrode detected by the detection circuit is sent to the touch detection calculation circuit, and the coordinates where the contact operation is performed are calculated by a predetermined calculation formula. In addition, the above is one embodiment of the coordinate detection apparatus of the present invention, and is not intended to limit the coordinate detection apparatus of the present invention. The configuration for executing the detection operation of the coordinate detection apparatus of the present invention and As a flow of operation, a circuit that can detect a contact operation on a known touch panel member may be selected as appropriate.

[Manufacturing method of laminated member]
Next, the manufacturing method of the laminated member of the present invention (hereinafter, may be abbreviated as “the manufacturing method of the present invention”) will be described. The manufacturing method of this invention is a manufacturing method of the laminated member provided with an electrode layer and a siloxane resin layer on a board | substrate, Comprising: The touch panel member of this invention and the laminated member of this invention are included in the said laminated member. The production method of the present invention includes a lamination step of laminating and forming an electrode layer and a siloxane resin layer in an arbitrary order on at least one surface side of a tempered glass substrate, and forming an effective region including the electrode layer and the siloxane resin layer; A cutting step of cutting another region located around the entire circumference of the member effective region or a part of the periphery by the thermal cutting means after the lamination step is performed. In the present invention, the “effective region” means a region including an electrode layer, a siloxane resin layer, and a further arbitrary configuration or layer related to one laminated member.

  The production method of the present invention may include an optional step other than the laminating step and the cutting step, but in order to fully enjoy the effect, at least before the cutting step, an acrylic resin is formed on the tempered glass substrate. Care should be taken not to include a step of forming the resin layer with a material having poor heat resistance such as a resin material. The resin layer having poor heat resistance means a resin layer that may cause scorching due to heat at the time of cutting by the thermal cutting means.

  In the manufacturing method of the present invention, a siloxane resin layer having excellent heat resistance is selected as a resin that can serve as an insulating film and a protective layer. Therefore, the electrode layer and the siloxane resin layer are laminated using tempered glass as a direct support substrate. After forming and forming the effective region, the tempered glass substrate can be substantially cut by a thermal cutting means. Therefore, apart from the touch panel member created by multi-cavity as in the prior art, it is possible to save the trouble of preparing the tempered glass piece, and to omit the step of aligning and attaching the touch panel member and the tempered glass piece.

  One embodiment of the manufacturing method according to the present invention will be described with reference to FIG. First, a tempered glass substrate 51 capable of taking two or more laminated members is prepared (FIG. 8A). Then, an electrode layer and a siloxane resin layer corresponding to each laminated member are laminated on the tempered glass substrate 51, and as many effective areas 52 as the number of multiple surfaces are formed (FIG. 8B). On the tempered glass substrate 51 shown in FIG. 8B, six effective regions 52 are formed. In addition, since the lamination | stacking aspect of the transparent electrode laminated | stacked in the effective area | region and the siloxane resin layer is the same as the aspect demonstrated using FIG. 1 etc. as a lamination | stacking aspect of the touch panel member of this invention, it omits description here. To do. Next, as shown in FIG. 8C, six laminated members 53 are obtained by cutting the tempered glass substrate by heat along the cutting line 54 by an appropriate thermal cutting means.

  According to the manufacturing method of the present invention, as described above, after the electrode layer and the siloxane resin layer are formed using a tempered glass substrate capable of multi-layering two or more laminated members such as a touch panel member as a direct support substrate. Further, it is possible to produce two or more laminated members by heat cutting for each effective region, and to provide a high-quality laminated member without complicating the production process.

  Moreover, the manufacturing method of this invention is not limited to the aspect which carries out multiple chamfering, As shown in FIG. 9, the tempered glass board | substrate 61 which does not plan multi-chamfering is prepared (FIG. 9A), and the tempered glass board | substrate 61 has one The effective region 62 is laminated (FIG. 9B), and then the tempered glass substrate 61 is cut along the cutting line 65 by thermal cutting means, and unnecessary regions 64 are cut and removed to form a laminated member 63 having a desired shape. May be. As described above, according to the manufacturing method of the present invention, a suitably shaped tempered glass substrate is prepared, an electrode layer and a siloxane resin layer having a desired shape are formed on the tempered glass substrate, and at least one around the effective region is formed. By cutting the part, a laminated member having a desired shape can be obtained. Therefore, it is possible to omit a complicated process of preparing a laminated member having a desired shape and separately preparing a tempered glass piece having a desired shape and laminating the laminated pieces after alignment.

  The touch panel is premised on a special method of use in which the user touches the display surface. Therefore, particularly in terms of strength, an improvement in the strength of the touch panel member is desired in the manufacturing method of the present invention. Furthermore, the touch panel member improved also about weight reduction and thin film formation can be provided. Therefore, the manufacturing method of the present invention is particularly effective as a manufacturing method of a touch panel member.

(Lamination of transparent electrodes)
In the production method of the present invention, the method for laminating and forming the transparent electrode layer on the tempered glass substrate is not particularly limited, and a known method known as a method for forming the transparent electrode formed on the substrate is appropriately selected, and a laminated member Transparent electrodes suitable for devices that are planned to be used may be laminated. For example, when a touch panel member is manufactured by the manufacturing method of the present invention, the electrode layer for the touch panel is laminated. A method for forming the electrode layer for the touch panel is not particularly limited, but generally, a formation method such as a photolithography method or a screen printing method is generally used. For example, when an electrode layer is formed by photolithography, the tempered glass substrate is directly or indirectly base material surface, and a conductive material constituting the electrode layer described above is applied to the base material surface. A conductive film is formed, and a photosensitive material is applied on the film to form a photosensitive film. And the exposure mask corresponding to the formation pattern of a some electrode part is arrange | positioned on the said photosensitive film | membrane, and it exposes by irradiating exposure light. Thereafter, the exposure mask is removed, the photosensitive film is developed, then the conductive film is etched, and finally the photosensitive film remaining on the substrate surface is removed, thereby forming a plurality of electrodes formed in a desired pattern. An electrode layer composed of parts can be formed. In the case where the electrode layer is formed by a photolithography technique, generally, the thickness of one electrode layer can be formed to about 10 nm to 500 nm. However, the above is one aspect of the method for forming the electrode layer in the production method of the present invention, and the method for forming the electrode layer is not limited.

(Lamination of siloxane resin layer)
In the production method of the present invention, the siloxane resin layer is prepared by preparing a siloxane resin composition and applying it to the substrate surface, and selecting a film forming method suitable for the siloxane resin contained in the siloxane resin composition. Can do. In addition, it is desirable that the siloxane resin layer to be formed has a heat resistance that does not cause scorching due to heat when the tempered glass substrate is cut by a thermal cutting means. Therefore, in the siloxane resin composition for forming the siloxane resin layer, the blending amount of the contained siloxane resin may be adjusted in consideration of the heat resistance of the formed siloxane resin layer.

  Hereinafter, a method for laminating and forming a siloxane resin layer using a photosensitive siloxane resin composition will be described as an example of laminating a siloxane resin in the production method of the present invention. In the present invention, photosensitivity means ionizing radiation curability. In addition to the alkoxysilane compound, the photosensitive siloxane resin composition includes a photoacid generator, a thermal acid generator, or a photobase generator, or a solvent capable of dissolving the siloxane resin, if necessary. May be prepared. A siloxane containing polysiloxane is formed by coating the siloxane resin composition on a substrate surface to form a film, hydrolyzing an alkoxylane compound contained in the film to form a silanol compound, and then subjecting the silanol compound to a condensation reaction. A resin layer can be formed.

As the alkoxysilane compound, for example, an alkoxysilane compound disclosed in Japanese Patent Application Laid-Open No. 2010-26360 can be selected, and can be arbitrarily selected from those represented by the following general formulas (1) to (3). May be used, or two or more may be used in combination.
(Formula 1) R ¹ Si (OR ⁴ ) ₃ (1)
(Formula 2) R ² R ³ Si (OR ⁵ ) ₂ (2)
(Formula 3) Si (OR ⁶ ) ₄ (3)
R ¹ may be hydrogen, an alkyl group, an alkenyl group, an aryl group, or a substituted product thereof, and a methyl group is particularly preferable. R ⁴ may be a methyl group, an ethyl group, a propyl group, an isopropyl group, or a butyl group, and may be the same or different.
R ² and R ³ each represent hydrogen, an alkyl group, an alkenyl group, an aryl group, or a substituent thereof, and may be the same or different. A methyl group is particularly preferable. R ⁵ represents a methyl group, an ethyl group, a propyl group, an isopropyl group, or a butyl group, and may be the same or different.
R ⁶ represents a methyl group, an ethyl group, a propyl group, an isopropyl group, or a butyl group, and may be the same or different.

Examples of the trifunctional silane compound represented by the general formula (1) include methyltrimethoxysilane, methyltriethoxysilane, methyltrimethoxyethoxysilane, methyltripropoxysilane, and methyltriisopropoxysilane. Well, but not limited to these.
Examples of the bifunctional silane compound represented by the general formula (2) include dimethyldimethoxysilane, dimethyldiethoxysilane, diphenyldimethoxysilane, diphenyldiethoxysilane, methylphenyldimethoxysilane, and methylvinyldimethoxysilane. However, the present invention is not limited to these.
Examples of the tetrafunctional silane compound represented by the general formula (3) include, but are not limited to, tetramethoxysilane and tetraethoxysilane.

In addition, as another example of a siloxane resin composition that is photosensitive, that is, an ionizing radiation curable material and can be patterned by a photolithography method, a conventionally known material other than the above is appropriately selected. In the production method of the present invention, it can be used for laminating a siloxane resin. Among them, the radiation curable resin composition disclosed in Japanese Patent No. 3821165, that is, a siloxane resin material (excluding an aqueous base-soluble silicon-containing polymer having a phenol group), a photoacid generator or a photobase generator, And the siloxane resin material can be dissolved, and an aprotic solvent (ie, diethyl ether, methyl ethyl ether, methyl-n-di-n-propyl ether, di-iso-propyl ether, methyltetrahydrofuran, dimethyldioxane, A radiation curable composition comprising an aprotic solvent containing at least one ether-based solvent listed in claim 1 of the above publication and cured by irradiation with radiation is laminated in the present invention. It can be suitably used as a constituent material of the siloxane resin layer. Alternatively, the radiation curable resin composition disclosed in Japanese Patent No. 3758669, that is, a siloxane resin material, a photoacid generator that releases an acidic active substance by irradiating with radiation of a specific wavelength used in the exposure step Or a photobase generator that releases a basic active substance, a solvent that can dissolve the siloxane resin material, and a curing-accelerating catalyst that does not release an acidic active substance or a basic active substance even when irradiated with radiation of the specific wavelength. The radiation curable composition containing this can be suitably used as the photosensitive siloxane resin composition of the present invention. In addition, as a preferable example of the siloxane resin material contained in the siloxane resin composition, a resin obtained by hydrolytic condensation of a compound represented by the following general formula (4) can be given.
(Formula 4) R ¹ _n SiX _4-n (4)
(In the formula, R ¹ represents an H atom or F atom, or a group containing B atom, N atom, Al atom, P atom, Si atom, Ge atom or Ti atom, or an organic group having 1 to 20 carbon atoms. , X represents a hydrolyzable group, n represents an integer of 0 to 2, and when n is 2, each R ¹ may be the same or different, and when n is 0 to 2, each X is the same But it may be different.)
The siloxane resin layer formed in the present invention may be formed from one type of photosensitive siloxane resin material, or from any combination of two or more types of photosensitive siloxane resin materials represented by different structural formulas. It may be formed. For example, the siloxane resin layer may be formed by arbitrarily combining two or more types of photosensitive siloxane resin materials represented by the above formula (4) and having different side chains.

  Using the photosensitive siloxane resin composition described above, a siloxane resin layer is formed in the same manufacturing process as a conventional insulating film manufacturing method, that is, an insulating film manufacturing method using an acrylic photosensitive material. can do. Therefore, it is desirable in the manufacturing process since the manufacturing equipment that has conventionally been formed using an acrylic photosensitive material can be used as it is.

More specifically, a photosensitive siloxane resin composition is prepared, and the photosensitive siloxane resin composition is applied directly or indirectly on a tempered glass substrate to form a coating film. As the coating method, any method may be adopted as long as the photosensitive siloxane resin composition can be applied to the substrate surface with a substantially uniform film thickness. For example, a spin coating method, A die coating method, a slit coating method, a gravure coating method, a coating method combining these methods, or an ink jet method can be selected as appropriate.
Then, after drying under reduced pressure as necessary, it is heated (prebaked) at an appropriate temperature, and then exposed to ionizing radiation such as ultraviolet rays through a photomask having a desired pattern to cure the exposed portion, The siloxane resin layer can be formed by removing the mask, developing the unexposed portion with an alkali developer, and heating (post-baking) as necessary. However, the difference from the acrylic photosensitive material is that the photosensitive siloxane resin material contained in the photosensitive siloxane resin composition can be appropriately determined by the heating temperature in the heating step from the range of about 220 ° C to 500 ° C. is there. Generally, when a photosensitive siloxane resin material is used, during pre-baking, the resin is semi-cured by heating at a relatively low temperature of around 100 ° C., and during post-baking, a temperature of about 220 ° C. to 500 ° C. The heating temperature can be selected so that the surface hardness required in the range is exhibited.
In the present invention, ionizing radiation includes both electromagnetic waves including ultraviolet rays and particle beams having energy quanta that can polymerize molecules including electron beams. The term “photosensitive” or “ionizing radiation curable” means that it can be cured by the ionizing radiation.

  Although the above mainly explained the method of forming a siloxane resin layer by a photolithographic technique using a photosensitive siloxane resin composition, the method of forming a siloxane resin layer is not limited to this. For example, the siloxane resin composition is used as an ink. The siloxane resin layer may be laminated and formed directly or indirectly on the tempered glass substrate by a printing method such as screen printing.

  Moreover, lamination | stacking formation of the siloxane resin layer in the manufacturing method of this invention can also be implemented using a non-photosensitive siloxane resin composition. For example, a silicon-based SOG (Spin on Glass) material known for forming an insulating film in the semiconductor field may be used as the siloxane resin composition to form the siloxane resin layer. The silicon-based SOG material itself does not have a patterning function. Therefore, in order to form a patterning layer using the silicon-based SOG material, first, the silicon-based SOG material is formed on the substantially entire surface of the substrate directly or indirectly on the tempered glass substrate, and then the upper surface thereof is formed. It is necessary to laminate a positive photosensitive material in the desired region, pattern by photolithography, and then remove unnecessary portions by wet etching with an acid solvent such as hydrofluoric acid. Then, after the etching is completed, the patterning can be completed by removing the unnecessary positive photosensitive material.

  However, when the silicon-based SOG material is used as described above, it is necessary to perform plate etching / peeling of the positive photosensitive material and perform wet etching using an acid solvent that is difficult to handle. The manufacturing process is complicated, and productivity may be problematic as compared with the case where the photosensitive siloxane resin composition is used.

Also, the siloxane resin layer formed using the photosensitive siloxane resin composition has good in-plane uniformity even when it is formed to take a multi-layered laminate member using a large glass reinforced substrate. Is obtained.
That is, a substrate (wafer) in the semiconductor field generally has a diameter of 300 mm or less, and it is sufficient if film forming properties on a relatively small substrate surface are ensured. On the other hand, a recent display member and a touch panel member used for the display member tend to be manufactured by taking multiple faces on a large substrate of, for example, 300 cm × 300 cm. It is unclear whether a silicon-based SOG material can exhibit good film-formability on a large substrate surface as well as a material that exhibits good film-formability on a small substrate surface. Therefore, the present inventors examined multi-cavity of a plurality of substrates with a large substrate using the silicon-based SOG material. As a result, when a dry etching or wet etching process is performed on a large substrate using a silicon-based SOG material in the same manner as a semiconductor process, in-plane uniformity cannot be guaranteed, and a siloxane resin layer formed thereby It was inferred that the in-plane uniformity was not obtained. In contrast, if a siloxane resin layer is formed using a photosensitive siloxane resin composition, a film can be formed using the technology established by the manufacture of flat panel displays. Even when a Kiba substrate is used, the in-plane uniformity of the siloxane resin layer is sufficiently ensured.

  From the above viewpoints, it can be said that the siloxane resin layered formation in the present invention is preferably performed using a photosensitive siloxane resin material.

(About formation of other arbitrary layers)
In the production method of the present invention, an arbitrary configuration or an arbitrary layer may be further formed directly or indirectly on the tempered glass substrate before the cutting step is performed. For example, in the manufacturing method of the touch panel member, the lead-out wiring may be formed on the tempered glass substrate. The method for forming the extraction wiring is the same as the method for manufacturing the extraction wiring formed in the manufacture of a general touch panel member. For example, when the extraction wiring is formed by a photolithography technique, an APC material made of silver, platinum, and copper is widely used as a forming material, but the material is not limited thereto. Moreover, when forming the extraction wiring by a printing method such as screen printing, as a forming material, metal particles such as silver and copper having a particle diameter of several tens of nm to several μm in a solvent and a resin binder, for example, an epoxy resin A resin binder made of a simple substance or a mixture of polyester resin, polyvinyl chloride, polyvinyl alcohol, polyvinyl acetate, polystyrene, etc. is contained, and a metal particle-containing paste appropriately adjusted using a solvent is widely used, but is not limited thereto. . Although not shown, terminals may be provided at the ends of the extraction wiring and at the edge of the glass reinforced substrate, and these may be formed in a process different from the process of forming the extraction wiring. However, the terminal may be formed of the same material in the same process when the extraction wiring is formed. The thickness and width dimension of the extraction wiring are not particularly limited. For example, when the extraction wiring is formed by a photolithography technique, the thickness is generally about 10 nm to 1000 nm, and the width dimension is general. Can be formed to about 5 μm to 200 μm, and when formed by printing such as screen printing, the thickness is generally about 5 μm to 20 μm, and the width dimension is generally about 20 μm to It can be formed to about 300 μm.

Cutting process:
In the production method of the present invention, the cutting step is a step of cutting the tempered glass substrate by using a thermal cutting means. The thermal cutting means is not particularly limited, and may be appropriately selected from known thermal cutting means such as laser cutting, gas cutting, plasma cutting, discharge cutting and the like. In particular, laser cutting is a processing method that does not come into direct contact with the material against contact cutting with a glass cutter, etc., so there is no problem of foreign matter adhesion or dirt, and high-precision and high-efficiency processing. Since it can respond to a request | requirement, it is preferable as a thermal cutting means in the manufacturing method of this invention. The thermal cutting means is capable of cutting the tempered glass substrate, and heat at the time of cutting the tempered glass substrate is such that the siloxane resin layer provided on the tempered glass substrate can be prevented from being burnt. It is preferable to select one that is temperature.

Example 1
(Preparation of base substrate)
First, a tempered glass substrate (reinforced alkali glass, Corning Gorilla Glass (registered trademark), Young's modulus 72 GPa) 550 mm × 650 mm as a touch panel member substrate is prepared and treated with a surfactant using ultrapure water. Subsequently, the substrate was cleaned by ultrasonic cleaning. In addition, formation of the effective area | region containing the electrode layer implemented below and a siloxane resin layer was formed 70 places on the said tempered glass board | substrate, and it implemented so that a 70-side touch panel member could be multi-faced.

(Plate making of extraction wiring)
As a lead-out wiring that assists the resistance of the outer peripheral wiring portion, APC was formed on the entire surface of the glass substrate to a thickness of 30 nm by sputtering. Subsequently, using a positive photosensitive material (manufactured by AZ Materials), a metal wiring pattern and an electrode extraction portion pattern were baked out of the effective display area by photolithography. Further, a phosphoric acid, nitric acid, and acetic acid mixed solution was used as an etchant, unnecessary portions were removed, and then the unnecessary positive photosensitive material was peeled off with caustic soda to form a metal wiring pattern.

(Film formation of the first transparent electrode layer)
Next, in order to form a first transparent electrode layer on the plate-formed metal wiring, ITO was deposited to a thickness of 30 nm on the entire surface by sputtering. Then, a plurality of diamond-shaped electrode portions to be aligned are connected linearly in the x direction to columns that are independently aligned in the x direction by photolithography using the same positive photosensitive material as that of the extraction wiring. The first transparent electrode layer was formed in a pattern in which columns were alternately formed. An oxalic acid-based solution was used as an ITO etchant. In the present embodiment, the first transparent electrode layer and the second transparent electrode layer formed on the tempered glass substrate are the first transparent electrode layer having a pattern in which diamond-shaped electrode portions are arranged in an orderly manner, and the above-mentioned diamond in top view. This was performed in a pattern in which a plurality of bridge-shaped electrode portions for arranging the shape-shaped electrode portions in the x-axis direction were regularly arranged.

(Formation of first siloxane resin layer)
In the method described in Example 2 (paragraph 0125) of Japanese Patent No. 3821165, that is, "in a solution obtained by dissolving 317.9 g of tetraethoxysilane and 247.9 g of methyltriethoxysilane in 1116.7 g of diethylene glycol dimethyl ether, 167.5 g of nitric acid prepared to 0.644% by weight was added dropwise over 30 minutes with stirring, and after 3 hours of reaction, after reaction was completed, a portion of the ethanol and diethylene glycol dimethyl ether formed was distilled off in a warm bath under reduced pressure. As a result, 1077.0 g of a polysiloxane solution was obtained, 525.1 g of this polysiloxane solution was added with 53.0 g of diethylene glycol dimethyl ether, a tetramethylammonium nitrate aqueous solution (pH 3.6) prepared to 2.38% by weight, and 3.0 g of water. And stir at room temperature (25 ° C) for 30 minutes As a result, a weight average molecular weight of the polysiloxane measured by the GPC method was 830. A photoacid was added to 10.0 g of the siloxane resin solution for a radiation curable composition. A radiation curable composition was prepared by blending 0.193 g of a generator (PAI-1001, manufactured by Midori Chemical Co., Ltd.) The amount of component (a) used was 15% by weight based on the total amount of the radiation curable composition. The amount of component (b) used is 1.9% by weight with respect to the total amount of the radiation curable composition, and the amount of component (d) used is 0.075% by weight with respect to the total amount of the radiation curable composition. According to the description, a photosensitive siloxane resin composition capable of patterning was prepared.

The above photosensitive siloxane resin composition is on a tempered glass substrate provided with a first transparent electrode layer formed as described above, and is applied directly to the surface of the first transparent electrode layer by a spin coating method. Formed. Subsequently, the solvent was partially removed by reducing the pressure to 0.02 torr with a vacuum drying apparatus, and further heated (prebaked) for 45 seconds on a hot plate at 90 ° C. to completely remove the solvent component. After cooling the substrate to room temperature, a photomask having a pattern in which contact holes are installed in the bridge portion of the ITO wiring, which is the second transparent electrode layer scheduled to be formed in a later process, is applied, and the exposure amount is 200 mJ at 365 nm by a proxy aligner. Exposure processing was performed.
As described above, the coating surface on which the exposure processing has been completed is dip-developed with 2.38 wt% (TMAH, Tokyo Ohka Kogyo Co., Ltd .: NMD-3), which is a developer, to remove unexposed portions. Pattern was formed. Further, the exposed substrate is a patterned insulating film having a thickness of 1.5 μm, which is cured by heating (post-baking) at 500 ° C. for 1 hour in an air atmosphere in a heating furnace (FUW210PA manufactured by Advantest). A siloxane resin layer was formed on the first transparent electrode layer.

(Formation of second transparent electrode layer)
Furthermore, in order to form the second transparent electrode layer constituting the bridge portion on the insulating film, ITO is used to form a film with a thickness of 50 nm on the entire surface by sputtering, and is the same as the first transparent electrode layer. The second transparent electrode layer was formed in a pattern in which a plurality of bridge-like electrode portions were formed at predetermined positions by photolithography using a positive photosensitive material.

(Formation of second siloxane resin layer)
Using the same photosensitive siloxane resin composition prepared when forming the first siloxane resin layer that is an insulating film, except that it was changed to a photomask for the formation pattern suitable as the outermost surface of the touch panel member, A second siloxane resin layer having a thickness of 1.5 μm was formed on the surface of the base material on which the second transparent electrode layer was formed by the same film forming method as that for the first siloxane resin layer. The second siloxane resin layer was provided mainly for surface protection. As described above, a multi-sided substrate having a plurality of effective regions formed on the tempered glass substrate was obtained.

A cutting line is set so as to divide the effective area formed on the multi-planar substrate substantially evenly, and along the cutting line, by a CO ₂ laser cutting device (LASERTEX-40, manufactured by Koike Oxygen Co., Ltd.), The tempered glass substrate was cut, and 70 touch panel members were obtained.

(Comparative Example 1)
In Example 1, instead of the photosensitive siloxane resin composition used as the material constituting the first siloxane resin layer (insulating film) and the second siloxane resin layer (surface protective layer), a transparent acrylic photosensitive material ( Except that the first acrylic resin layer and the second acrylic resin layer are provided by changing to NN880 manufactured by JSR) and changing part of the formation conditions of the insulating film and the surface protective layer as follows. A multi-sided substrate of the touch panel member was formed by the same method as the manufacturing method of Example 1.

  For the insulating film and the surface protective layer in Comparative Example 1, the heating time during pre-baking was changed to 60 seconds with respect to these formation conditions in Example 1, and the exposure amount in the exposure process was changed to 100 mJ. Further, when developing the substrate after the exposure processing for forming these layers, an inorganic alkaline solution (CD150-CR manufactured by JSR) as a developing solution is used, and the pattern is formed by removing unexposed portions. Formed. Further, the substrate after exposure was cured by heating at 230 ° C. for 30 minutes in an air atmosphere (DO-450FPA manufactured by ASONE Co., Ltd.) to form a patterned insulating film having a thickness of 1.4 μm and a surface protective layer. Formed. As described above, a multi-sided substrate having a plurality of effective regions formed on the tempered glass substrate was obtained.

  And this other chamfering board | substrate was cut | disconnected so that it might become for every effective area on the same conditions as the laser cutting means in Example 1, 70 touch panel members were obtained, and it was set as the comparative example 1.

(Evaluation)
The touch panel member of Example 1 was cut well, and the cut surface was shown in a state with no problem in quality. Moreover, it was observed by the method that neither the first siloxane resin layer nor the second siloxane resin layer was burnt.
On the other hand, the touch panel member of Comparative Example 1 showed a state where the cut surface had no problem in quality, but the acrylic resin layer in the region close to the cut surface of the first acrylic resin layer and the second acrylic resin layer. The scorching of was observed by microscopic observation.

1, 1 ′, 1 ″ touch panel member 2 tempered glass substrate 3 siloxane resin layer 3a first siloxane resin layer 3b second siloxane resin layer 3c third siloxane resin layer 4 transparent electrode layer for touch panel 5 touch panel member 6 touch panel member 7 Wiring 8 First electrode layer 9 Second electrode layer 10 Second electrode layer 11 Touch panel member-integrated organic EL display device 12 Touch panel member 13 Tempered glass substrate 14 First electrode layer 14 ′ Second electrode layer 15 Siloxane resin layer 21 Organic EL Substrate 22 Transparent substrate 23 Organic EL element 24 Spacer 31 Touch panel member-mounted liquid crystal display device 32 Touch panel member 33 Tempered glass substrate 34 First electrode layer 34 ′ Second electrode layer 35 First siloxane resin layer 35 ′ Second siloxane resin layer 36 Extraction wiring 37 Spacer 38 Transparent substrate 39 Touch panel Material 41 Liquid crystal display device 42 Transparent substrate 43 Display side substrate 44R, 44G, 44B Red colored portion, green colored portion, blue colored portion 45 Black matrix 46 Colored layer 47 Alignment film 48 for driving liquid crystal material Electrode substrate 49 Driving liquid crystal material 50 Seal member 51 Tempered glass substrate 52 Effective region 53 Laminated member 54 Cutting line 61 Tempered glass substrate 62 Effective region 63 Laminated member 64 Cutting region 65 Cutting line 71 Touch panel member 72 Tempered glass substrate 73 First electrode layer 74 Second electrode layer 75 First One siloxane resin layer 76 Second siloxane resin layer 77 Lead-out wiring 78 Black frame layer 79 Protective paste layer 80 Protective layer 100 Conventional touch panel member integrated organic EL display device 101 Conventional touch panel member 102 Transparent substrate 104 Acrylic resin layer 105 For protection Tempered glass

Claims (8)

On the tempered glass substrate, an electrode layer for a touch panel and a siloxane resin layer are laminated and provided,
The touch panel member, wherein the tempered glass substrate is a direct support substrate for the touch panel electrode layer and the siloxane resin layer. The touch panel member according to claim 1, wherein the tempered glass substrate has a Young's modulus of 70 GPa or more. An electrode layer and a siloxane resin layer are laminated and provided on a tempered glass substrate,
The laminated member, wherein the tempered glass substrate is a direct support substrate for the electrode layer and the siloxane resin layer. A touch panel electrode layer and a siloxane resin layer are laminated on a tempered glass substrate, and the tempered glass substrate includes a touch panel member that is a direct support substrate for the touch panel electrode layer and the siloxane resin layer,
The tempered glass substrate is used as a touch surface directly or indirectly, or another substrate provided to face the tempered glass substrate with the electrode layer and / or the siloxane resin layer interposed therebetween, as a touch surface,
A detection circuit for detecting an electrical signal output by a contact operation performed directly or indirectly on the touch surface;
A coordinate detection apparatus comprising: a coordinate calculation calculation circuit that calculates coordinates of a contact position where the contact operation is performed from an electrical signal detected by the detection circuit. A method for producing a laminated member comprising an electrode layer and a siloxane resin layer on a substrate,
Using a tempered glass substrate as the substrate,
Laminating step of laminating an electrode layer and a siloxane resin layer in an arbitrary order on a tempered glass substrate, and forming an effective region including the electrode layer and the siloxane resin layer;
After performing the laminating step, a cutting step of cutting the other region located around the entire circumference or part of the periphery of the effective region by a thermal cutting means,
The manufacturing method of the laminated member characterized by the above-mentioned. The tempered glass substrate is a tempered glass substrate that can take two or more laminate members,
The laminating step is a laminating step in which an electrode layer and a siloxane resin layer are formed on the tempered glass substrate in an arbitrary order, and two or more effective regions including the electrode layer and the siloxane resin layer are formed.
6. The method for manufacturing a laminated member according to claim 5, wherein the cutting step is a cutting step including cutting each effective area by a thermal cutting means after the lamination step. The method for producing a laminated member according to claim 5 or 6, wherein the siloxane resin layer is formed using a siloxane resin composition containing a photosensitive siloxane resin. The method for manufacturing a laminated member according to any one of claims 5 to 7, wherein the laminated member is a touch panel member, and the electrode layer is an electrode layer for a touch panel.