TW201351231A - Work-piece bonding method and touch panel - Google Patents

Abstract

Provided are: a relatively inexpensive method for bonding together workpieces, having good reworkability, no color generation, and a comparatively short processing time; and a touch panel produced using this method. Ultraviolet light is irradiated on the bonding surface of a cover glass (11) having a hydrophilic surface and a silicone substrate (e.g., PDMS) (17a), and same are laminated, pressurized/heated, and bonded. In addition, a primer is coated on an ITO electrode (13) provided upon a hard coat layer (14a) of a PET film (14) having a hydrophobic surface; ultraviolet light is irradiated on the bonding surface between that surface and the silicone substrate (e.g., PDMS) (17a); and same are laminated, pressurized/heated, and bonded. Similarly, a primer is coated on a second ITO electrode (15) upon a glass substrate (16) and on the hard coat layer (14a) of the PET film (14); ultraviolet light is irradiated on the bonding surface between that surface and a silicone substrate (e.g., PDMS) (17b); and same are laminated, pressurized/heated, and bonded.

Description

Workpiece bonding method and touch panel

The present invention relates to a bonding method for a workpiece that can be used for a touch panel, an organic EL (Organic Electro-Luminescence), an organic semiconductor, a solar cell panel, and the like, and a touch manufactured by the method. panel. More specifically, for example, a resin such as PET (polyethylene terephthalate) provided with a hard coating layer on its surface, a workpiece having hydrophobicity on the surface and a substrate made of siloxane The member is bonded, for example, a workpiece having hydrophilicity on the surface of glass or the like, and a resin having a hard coating layer on its surface, a surface having a hydrophobic surface, and further, a surface of a member formed of glass or the above resin. Providing a transparent conductive film such as an ITO (Indium Tin Oxide) transparent electrode for bonding a workpiece made of a siloxane to a workpiece having a hydrophobic surface on the surface to be bonded to each other The method and the touch panel manufactured by bonding the workpieces.

In recent years, attention has been paid to organic EL, organic semiconductors, solar cells, and the like which are manufactured by bonding workpieces. Also, as a manufacturer of the bonded workpiece, A touch panel is known. The touch panel is a display that displays an image by a finger or a stylus pen, and can be controlled by on-off or data input of a switch, and has been rapidly popularized in recent years. For example, a touch panel is widely used in a mobile phone, a device that carries a game machine, a tablet terminal, a car navigation system, a bank ATM, an automatic ticket vending machine, and the like.

FIG. 18 is a schematic diagram showing a touch panel formed by the image display device and the touch sensor module. As an example, a touch panel in which a capacitive capacitance method is projected is disclosed.

As shown in FIG. 18, the touch panel 100 is formed by an image display device 30 such as an LCD panel and a position input device 10 disposed at an upper portion thereof.

The position input device 10 is a touch sensor module 10a for detecting a portion of the touch sensor surface touched by a finger or a stylus pen, and inputting information from a position of the touch sensor module 10a. And the touch panel control unit 10b of the image display device 30 is controlled based on the above information.

The touch sensor module 10a is configured by laminating a PET film 14 having a first transparent conductive film (for example, an ITO electrode) pattern and a glass substrate 16 having a second transparent conductive film (for example, an ITO electrode) pattern. The first ITO electrode 13, the PET film 14, the second ITO electrode 15, and the glass substrate 16 are laminated in this order. Further, on both sides of the PET film 14, a light-transmissive hard coat layer 14a is provided to prevent damage of the PET film 14. That is, the first transparent conductive film pattern is provided on the hard coating layer 14a on the PET film 14. The hard coat layer 14a is made of, for example, an acrylate resin or the like.

Further, a cover glass 11 is provided on the side of the PET film 14 on which the first ITO electrode 13 is provided. A black matrix 12 is formed on the peripheral edge portion of the surface of the cover glass 11 on the side opposite to the surface on which the pattern of the first ITO electrode 13 is provided on the PET film 14.

On the other hand, on the lower side of the glass substrate 16, a wiring layer 21 that is electrically connected to the first ITO electrode 13 and the second ITO electrode 15 and is also electrically connected to the touch panel control portion 10b shown later is provided.

The wiring layer 21 is disposed on the lower side of the glass substrate 16 so as to be shielded from the black matrix 12 provided on the cover glass 11 when viewed from the side of the cover glass 11 . That is, the wiring layer 21 is provided at a position that does not interfere with the image displayed in the touch panel.

The touch panel control unit 10b is formed by a touch panel (TP) control IC unit 22 and an FPC (flexible printed circuit board) 23, and the touch panel control IC unit 22 is provided on the FPC 23. The FPC 23 is provided with an open annular structure at the center portion so as to be shielded from the black matrix 12 of the cover glass 11 when viewed from the cover glass 11, and the touch panel control IC portion 22 is provided in the ring shape. The upper part of the construction part. That is, the touch panel control unit 10b is provided at a position that does not interfere with the image displayed on the touch panel. As described above, the touch panel control unit 10b is electrically connected to the wiring layer 21 of the touch sensor module 10a, and is also electrically connected to the image display device 30.

The touch sensor module 10a and the touch panel control unit 10b are laminated on the image display device 30 composed of the image display panel 32 such as an LCD panel to constitute a touch panel. Furthermore, in the image display surface The surface of the board 32 is provided with a polarizing film 31. Further, as shown in FIG. 18, the touch panel which is laminated in the order of the touch sensor module 10a, the touch panel control unit 10b, and the image display device 30 is made of an ultraviolet curable adhesive 24 (UV Resin) to join. That is, the surface of the glass substrate 16 of the touch sensor module 10a on which the wiring layer 21 is provided is bonded to the touch panel control portion 10b and the polarizing film on the surface of the image display device 30 by UV Resin. Further, the portion of the glass substrate 16 of the touch sensor module 10a where the wiring layer 21 is not provided and the opening portion of the touch panel control portion 10b are filled with the UV Resin.

The touch panel detects the position information of the finger or the like on the cover glass 11 by using the touch sensor module 10a, and controls the image display device 30 according to the control signal from the touch panel control unit 10b that receives the position information. Actions.

As shown in FIG. 18(b), the first ITO electrode 13 is an electrode pattern in which a plurality of electrode pattern units extending in the Y direction are arranged in parallel in the X direction. That is, the first ITO electrode 13 is formed of a plurality of electrode pattern units.

On the other hand, as shown in FIG. 18(c), the second ITO electrode 15 is an electrode pattern in which a plurality of electrode pattern units extending in the X direction are arranged in parallel in the Y direction. That is, the second ITO electrode 15 is formed by a plurality of electrode pattern units.

The high frequency voltage is applied to each of the electrode pattern units by a power supply (not shown). When the finger approaches the cover glass 11 of the touch panel, the finger and the first ITO electrode 13 are disposed in the electrode pattern unit at a position close to the finger, and the finger and the second ITO electrode 15 are disposed at a position close to the finger. Electrostatic capacitors (capacitors) are formed between the electrode pattern units, and current flows respectively. By detecting this current change, the position of the finger on the cover glass 11 is detected.

That is, as is clear from FIGS. 18(b) and (c), the first ITO electrode 13 detects the position of the finger in the X direction, and the second ITO electrode 15 detects the position of the finger in the Y direction. As shown in FIG. 18(d), the first ITO electrode 13 and the second ITO electrode 15 are arranged in a matrix shape in the X-Y two-dimensional direction, and the touch panel sensor module 10a can detect the contact cover glass 11 The position of the finger in the X-Y dimension of the dimension.

The signal related to the position of the finger touching the cover glass 11 detected by the touch panel sensor 10a is transmitted to the touch panel control unit 10b.

Here, between the PET film 14 of the touch panel sensor module 10a and the cover glass 11 (between the surface of the PET film 14 on which the first ITO electrode 13 is disposed and the lower surface of the cover glass 11), or PET Between the film 14 and the glass substrate 16 (between the surface of the hard coating layer 14a on the side opposite to the first ITO electrode 13 side of the PET film 14 and the surface of the glass substrate 16 on which the second ITO electrode 15 is provided), an air layer is interposed. In the case where the refractive index of the interface between the surface and the air layer is different, reflection of light at the interface occurs, and deterioration in display quality of the touch panel such as reduction in brightness and reduction in contrast occurs.

Therefore, in order to remove such an air layer, the air layer is replaced by a transparent substance having a refractive index close to that of the cover glass 11, the PET film 14, and the glass substrate 16 in comparison with air, thereby suppressing the touch surface. The brightness of the board display is reduced and the contrast is reduced.

Specifically, the lower surface of the cover glass 11 and the side surface of the first ITO electrode 13 of the PET film 14 are bonded by a transparent adhesive member 19 having the above-described refractive index as compared with air. Moreover, the surface of the hard coating layer 14a on the side opposite to the first ITO electrode 13 side of the PET film 14 and the surface on which the second ITO electrode 15 of the glass substrate 16 is provided are also joined by the above-described bonding members.

As an adhesive member, an optical adhesive tape (Optically Clear Adhesive Tape, hereinafter referred to as OCA tape) using a highly transparent acrylic adhesive as exemplified in Patent Document 1 and Patent Document 2, or Patent Document 3, Patent Literature 4 Highly transparent curable resin (Optically Clear Resin: hereinafter referred to as OCR).

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. Hei 9-251159

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2011-74308

[Patent Document 3] Japanese Patent Laid-Open Publication No. 2009-48214

[Patent Document 4] Japanese Patent Laid-Open Publication No. 2010-257208

[Patent Document 5] Japanese Patent No. 3714338

[Patent Document 6] Japanese Laid-Open Patent Publication No. 2006-187730

[Patent Document 7] International Publication No. 2008/087800

[Patent Document 8] Japanese Patent Laid-Open Publication No. 2008-19348

As described above, the lower surface of the cover glass 11 and the surface of the first ITO electrode 13 side of the PET film 14 are bonded by the OCA tape or the OCR, and the hard coat is applied to the side opposite to the first ITO electrode 13 side of the PET film 14. The bonding of the surface of the layer 14a and the surface of the glass substrate 16 on which the second ITO electrode 15 is provided can suppress the decrease in the brightness of the touch panel display and the reduction in contrast.

However, when using OCA tape and OCR, the following problems and inappropriate conditions need to be considered.

In the case of OCA tape, there is a lack of reworkability because of its strong adhesion. That is, since it is difficult to peel and reuse, when using an OCA tape, high fitting precision is required.

Further, since the OCA tape is relatively hard, in the case where the surface of the first ITO electrode 13 of the PET film 14 and the surface of the surface of the glass substrate 16 on which the second ITO electrode 15 is provided have a stepped structure, the bubbles are likely to be mixed into the above-mentioned step when attached. section.

Further, as described above, since the OCA tape lacks reworkability, air bubbles are easily mixed in the step portion of the surface, and the attaching process is difficult. Therefore, in the case where the area of the joint surface is a large-area object to be joined, it is difficult to use the OCA tape. Also, OCA tape is more expensive.

On the other hand, the bonding by OCR is carried out as follows. That is, the OCR is applied to the joint surface of at least one of the two workpieces. The two workpieces are overlapped and the OCR is hardened by heating and ultraviolet (UV) irradiation to join the two workpieces. Here, since OCR generally has a high viscosity, it is difficult to uniformly coat the joint surface. Therefore, for example, an inappropriate condition in which the joint surface of the cover glass 11 and the joint surface of the PET film 14 are joined in a non-parallel state may be generated.

Further, in the case where the OCR has a low heat-resistant temperature and an ultraviolet (UV) curable OCR, it is necessary to consider the influence of the OCR temperature rise at the time of UV irradiation. That is, if the distance between the UV light source 40 and the OCR joint surface is too close, the OCR is heated to a temperature higher than the heat resistant temperature of the OCR. Therefore, the distance between the UV light source 40 and the OCR joint surface needs to be expanded to some extent, but at this time, since the UV intensity at the OCR joint surface is also weakened, in conclusion, in the case of UV curable OCR, hardening The processing time will become longer.

Further, since the OCR is deformed at the time of hardening, the joined state of the two workpieces does not necessarily become a desired one. For example, when the cover glass 11 is bonded to the PET film 14 and the glass substrate 16 is bonded to the image display panel 32, the interval between the cover glass 11 and the PET film 14 and the distance between the glass substrate 16 and the image display panel 32 are also The unevenness of the condition deteriorates the performance of the touch panel.

Further, the time resistance in the OCR state is not always sufficient, and when a certain amount of time elapses after bonding, the OCR itself is discolored, for example, yellowed. Therefore, in the state of the touch panel, the portrait looks discolored. Also, the price of OCR is relatively high.

The present invention has been made in view of the foregoing circumstances, the present invention The object of the present invention is to provide a method for bonding a workpiece which has good reworkability and which does not develop color even when used for a long period of time, and which has a relatively short processing time and is easy to be joined even for a member having a large joint surface. A touch panel using such a bonding method to suppress a decrease in brightness and a decrease in contrast is provided.

The present invention provides a transparent conductive film provided on a surface of a workpiece having a hydrophilic surface such as a glass having a hydrophilic surface, a resin having a hydrophobic surface, a glass or a resin, a workpiece having a hydrophobic surface, and the like, and having hydrophilicity. In the case of a workpiece on a surface and a workpiece having a hydrophobic surface, or in a state in which workpieces having a hydrophobic surface are attached to each other, a member made of siloxane is used instead of the previous OCA tape or OCR, and the And other technologies. Further, it is provided to a technician having the second and third workpieces having the above-mentioned hydrophobic surface and bonded to the member made of the oxime.

As a specific example, a touch panel will be described. In the touch panel shown in FIG. 18, the lower surface of the cover glass 11 (the surface of the first workpiece) and the surface of the first ITO electrode 13 side of the PET film 14 (the surface of the second workpiece) are bonded together. When the surface of the hard coating layer 14a on the side opposite to the first ITO electrode 13 side of the PET film 14 (the surface of the first workpiece) and the surface of the glass substrate 16 on which the second ITO electrode 15 is provided (the surface of the second workpiece) are used, Replace the previous OCA tape or OCR with a member made of oxane.

It is known to form a member made of oxoxane in the atmosphere (below When the surface is irradiated with ultraviolet rays, the surface is oxidized to become a hydrophilic surface, and the glass substrate 16 or the resin substrate is overlapped on the surface, and the glass substrate 16 or the resin substrate which overlaps and overlaps is irradiated with ultraviolet rays. The siloxane substrate is pressurized or heated for a predetermined period of time, whereby the two substrates are joined.

For example, when the oxyalkylene plate is a polydimethylsiloxane (PDMS) substrate as described in Patent Document 5, the surface of the siloxane (PDMS) substrate 17 is as shown in Fig. 2(a). There is an organic oxiranyl surface (hydrophobic surface).

By irradiating ultraviolet rays having a wavelength of 220 nm or less (for example, ultraviolet rays having a center wavelength of 172 nm emitted from a xenon excimer lamp) on the surface of the substrate 17 held in the atmosphere, active oxygen is generated on the surface of the substrate. By contacting the active oxygen with the surface of the substrate, the surface of the substrate is oxidized. That is, as shown in Fig. 2(b), the methyl group of the organic oxiranyl group is detached, and the ruthenium atom of the methyl bond is bonded to the active oxygen.

Since moisture is present in the atmosphere, the above-mentioned active oxygen is bonded to hydrogen, and as shown in Fig. 2(c), the surface of the substrate becomes a state in which a ruthenium atom is bonded to a hydroxyl group (OH group). By superimposing the hydrophilic surfaces of the mating glass substrate 16 on such a surface to make the two surfaces adhere to each other, as shown in FIG. 2(d), hydrogen bonding is formed at the interface between the surface of the PDMS substrate 17 and the glass surface, and the two are bonded. Substrate.

Hexane is a relatively stable material. Unlike OCR, even after a certain amount of time after lamination, the color of the neon alkane itself is not produced. Therefore, even if it is used as a substrate of a touch panel display The bonding material and the image of the touch panel are not affected by discoloration.

In addition, the surface of the hard coating layer 14a on the first ITO electrode 13 side of the PET film 14 or the surface of the first wiring layer 21 side of the glass substrate 16 has a stepped structure. In addition, it is also easy to suppress the air bubbles from being mixed into the aforementioned step portion at the time of attachment. That is, the joining can be easily performed even for a member having a large joint surface.

Further, as described above, the bonding using the decyloxyalkyl plate is not the coating of the bonding surface as the OCR, nor the bonding due to the hardening reaction of the OCR, and does not cause the coating when the OCR is used. The problem of uniformity of cloth and the problem of deformation during hardening.

Because the siloxane has a higher heat resistance temperature than the OCR, the UV light source 40 and the krypton oxygen in the surface treatment of the siloxane substrate can be shortened compared with the distance between the ultraviolet (UV) light source 40 and the OCR bonding surface during OCR hardening. The distance from the surface of the alkyl plate is greater than the UV intensity of the OCR interface on the surface of the siloxane substrate. That is, in the UV irradiation process of the siloxane substrate, the UV utilization efficiency is higher than that of the OCR bonding surface.

Further, according to experiments by the inventors, it was found that the time required for the UV irradiation process of the siloxane chain, the heating process of the bonded substrate such as the oxyalkylene plate and the glass substrate, and the pressurization process are longer than the UV hardening reaction of the OCR. short.

Also, in general, the price of the oxyalkylene sheet is lower than that of the OCA tape and the OCR.

In the case of bonding using a siloxane chain, it is not The glass substrate or the resin substrate is overlapped with the ultraviolet oxyalkylene oxide plate, and the bonding is completed immediately. As described above, the bonding is completed by pressing and heating the both substrates for a predetermined period of time. Therefore, the two substrates can be easily separated shortly after the overlap. Therefore, for example, when the alignment between the glass substrate or the resin substrate and the ultraviolet oxyalkylene group irradiated with ultraviolet rays is not sufficient, if the overlap is shortly after the overlap, the both may be peeled off, and the oxyalkylene plate may be irradiated with ultraviolet rays again to bond. engineering. That is, it has reworkability compared to OCA tape.

FIG. 1 discloses a configuration example of a touch panel composed of the bonding method of the present invention.

The basic structure is the same as that shown in FIG. 18, and is composed of a position input device 10 composed of a touch sensor module 10a and a touch panel control unit 10b, and an image display device 30. In the present invention, the setting is made. A nonoxyalkylene plate (for example, PDMS) 17a is provided between the first ITO electrode 13 and the cover glass 11 on the surface of the hard coat layer 14a of the PET film 14, and one surface of the oxyalkylene oxide plate 17a and the first ITO electrode are provided. There is a primer in the middle of the 13th. Further, a tantalum oxyalkylene sheet 17b is provided between the hard coating layer 14a of the PET film 14 and the second ITO electrode 15 provided on the surface of the glass substrate 16, and between the oxyalkylene group plate 17b and the hard coating layer 14a. A primer is interposed between the oxyalkylene sheet 17b and the ITO electrode 15.

Here, the experimental results of the inventors and the like obtain the following findings. That is, it was found that even if the surface of the oxyalkylene plate was irradiated with ultraviolet rays (UV), the surface became a hydrophilic surface, and the hydrophilic surface of the oxyalkylene plate was overlapped, and the PET of the first ITO electrode 13 was provided on the surface. The film 14 or the glass substrate 16 on the surface of which the second ITO electrode 15 is provided cannot be joined. Similarly, it was found that the surface of the hard coating layer 14a on the side opposite to the first ITO electrode 13 side of the PET film 14 could not be joined even if the hydrophilic surface of the oxyalkylene plate obtained by UV irradiation was overlapped.

That is, the joint surface of the oxyalkylene sheet on the hydrophilic surface, the surface of the PET film 14 on which the first ITO electrode 13 is provided, and the hard surface opposite to the surface on which the first ITO electrode 13 of the PET film 14 is provided are obtained. It is difficult to join the surface of the coating layer 14a and the surface of the glass substrate 16 on which the second ITO electrode 15 is provided.

The inventors of the present invention have intensively reviewed and found that the surface of the first ITO electrode 13 on the PET film 14 and the surface of the hard coating layer 14a on the opposite side of the surface of the PET film 14 on which the first ITO electrode 13 is provided, and the second ITO on the glass substrate 16 are provided. The surface of the electrode 15 is coated with a primer 18 (sealing), and the surface of the primer 18 is modified to thereby make the surfaces (the surface of the PET film 14 on which the first ITO electrode 13 is provided, and the PET film 14). The surface of the hard coating layer 14a on the side opposite to the surface on which the first ITO electrode 13 is provided and the surface on which the second ITO electrode 15 is provided on the glass substrate 16 are suitable for bonding, and the surface to be bonded can be joined by overlapping The surface of the UV-irradiated oxirane plate is bonded to the oxime card and the PET film 14. Then, as the primer 18, it was found that a decane coupling agent or a decane-based coating agent was effective.

The surface modification of the primer 18 by applying the primer 18 to the surface of the workpiece, the mechanism by which the workpiece can be bonded to the surface of the UV-irradiated oxyalkylene sheet is not necessarily known, but And below Mechanism. Hereinafter, the mechanism of thinking will be described with reference to FIGS. 3 and 4.

As an example, a decane coupling agent was used as the primer 18, and the surface of the primer 20 was applied to the surface of the PET film 14 on which the first ITO electrode 13 was placed. Further, the oxyalkylene sheet 17 of Fig. 4 is bonded to the cover glass 11 in advance by the method shown in Fig. 2 .

Fig. 3(a) shows a state in which a decane coupling agent is applied as a primer 18 on the surface of the PET film 14 on which the first ITO electrode 13 is provided.

The decane coupling agent is a functional group having two types of reactivity different in one molecule. In Fig. 3(a), the functional group represented by RO (O is oxygen) is a functional group chemically bonded to an inorganic material, and X is a functional group bonded to an organic material. Since the first ITO electrode 13 on the PET film 14 is an inorganic substance, it is chemically bonded to the functional group RO.

Next, as shown in FIG. 3(b), ultraviolet rays (UV) from an excimer lamp or the like are applied to the decane coupling coated surface of the PET film 14 in an atmosphere containing moisture (H ₂ O) or carbon dioxide (CO ₂ ). The ultraviolet light (UV) emitted by the light source 40. The decane coupling coated surface of the PET film 14 is surface-modified by UV irradiation.

Specifically, it is conceivable that (a) the functional group RO of the decane coupling agent, the X decomposition, the detachment, the surface of the first ITO electrode 13 on the ruthenium oxide and the PET film 14, or the surface of the PET film 14 where the pattern of the first ITO electrode 13 is not provided. a part of the bonding, (b) the decomposition reaction of the aforementioned functional group X and the chemical reaction of moisture in the air and carbon dioxide caused by UV irradiation The cerium oxide forms a carboxyl group (-COOH) bond with the surface of the first ITO electrode 13 on the PET film 14 or the surface of the PET film 14 where the pattern of the first ITO electrode 13 is not provided, and (c) the functional group of the decane coupling agent. RO, X decomposition, detachment, surface of the first ITO electrode 13 on the partially exposed PET film 14, or the surface of the PET film 14 on which the first ITO electrode 13 is not provided, and chemical reaction of moisture and carbon dioxide in the air caused by UC irradiation As a result, oxygen radicals generated by the reaction react to form a hydroxyl group (-OH, hereinafter also referred to as an OH group). Then, the above-mentioned (a) cerium oxide reacts with moisture in the air, and as shown in the figure on the right side of Fig. 3(b), the terminal is in a state in which the OH group is bonded.

Further, although not shown in FIG. 3(b), the impurities attached to the decane coupling coated surface of the PET film 14 are also removed by the oxygen radical generated as a result of the UV irradiation.

In summary, the surface of the PET film 14 on which the pattern of the first ITO electrode 13 is provided is a portion in which (a) the end of the bonded cerium oxide is an OH group, and (b) a portion bonded to the carboxyl group (the end is OH group), (c) an oxidative reaction due to an oxygen radical and a part of an OH group bond.

Since either of the conditions is an OH group at the end, the surface of the decane coupling coated surface of the PET film 14 by UV irradiation is modified, and the surface of the PET film 14 on which the pattern of the first ITO electrode 13 is provided is almost always associated with the OH group. The surface of the PET film 14 on which the pattern of the first ITO electrode 13 is provided becomes a hydrophilic surface.

That is, the setting of the PET film 14 for the hydrophobic surface The surface of the ITO electrode 13 is coated with a primer 18, and the surface on which the primer 18 is applied is irradiated with ultraviolet rays (UV), whereby the surface of the PET film 14 on which the first ITO electrode 13 is provided is a surface suitable for bonding (hydrophilicity). surface).

Then, as shown in FIG. 4(c), the first ITO of the PET film 14 which is subjected to UV irradiation treatment by such a coating of a decane coupling agent to form a hydrophilic surface (that is, a surface suitable for bonding) is overlapped. The surface of the electrode 13 is bonded to the surface of the oxyalkylene oxide plate 17 formed by the surface opposite to the bonding surface of the cover glass 11 by UV irradiation, thereby forming hydrogen bonding, and The joint surface is dehydrated by heating the overlap-matched oxirane plate 17 and the PET substrate. Finally, the oxime group 17 and the PET film 14 having the pattern of the first ITO electrode 13 on the bonding surface are shared by oxygen. Knot to join.

In addition, in the case where the ITO coupling agent is applied to the surface of the PET film 14 on which the first ITO electrode 13 is provided as the primer 18, the first ITO electrode is provided on the PET film 14 in FIG. 3 and FIG. The surface of the hard coating layer 14a on the opposite side of the surface of the surface of the glass substrate 16 and the surface of the glass substrate 16 on which the second ITO electrode 15 is provided may be bonded by the same mechanism.

Further, in the case where the decane coupling agent is used as the primer 18 in the case of using a decane coupling agent for antifouling or static electricity prevention, the surface of the workpiece coated with the siloxane model coating agent is irradiated. Ultraviolet rays, the state of the end of the coated surface becomes a hydrophilic surface to which an OH group is bonded, and is modified to a surface suitable for bonding.

According to the above, in the present invention, as described below Solve the above problems.

(1) applying a primer formed of a decane coupling agent or a decane-based coating agent to one side of a workpiece having a hydrophobic surface; the surface of the primer applied to the workpiece, and the foregoing The member formed by the oxyalkyl group is irradiated with ultraviolet rays; and the surface of the workpiece irradiated with ultraviolet rays is laminated in contact with the surface of the member made of the argon aerogel, which is irradiated with ultraviolet rays; The contact surface of the formed member is pressurized by pressurization, or the laminated workpiece and the member formed by the decane are heated, or the laminated workpiece and the member formed by the decane are used. The contact surface is heated while being pressurized, whereby the workpiece having the hydrophobic surface and the member made of siloxane are bonded.

(2) applying a primer made of a decane coupling agent or a decane-based coating agent to the surface of the second workpiece having a hydrophobic surface; and forming a surface of the first workpiece having a hydrophilic surface Both the surface of the second workpiece coated with the primer and the surface of the member made of the oxime are irradiated with ultraviolet rays; and the first workpiece and the member made of the siloxane and the second workpiece are The surface of the ultraviolet irradiation is contacted to be laminated; the contact surface is pressurized to pressurize, or the laminated first and second workpieces and the member formed of argon are heated, or laminated The first and second workpieces and the member made of siloxane are heated while being pressurized by the contact surface, whereby the member made of siloxane is interposed on the hydrophilic surface. The first workpiece is bonded to the second workpiece having a hydrophobic surface.

(3) On the first workpiece having a hydrophobic surface and having a hydrophobicity table Applying a primer 18 made of a decane coupling agent or a decane-based coating agent to the surface of the second workpiece; and applying the primer to the first workpiece and the second workpiece, and Irradiating the ultraviolet rays on both surfaces of the member formed by the decane, and stacking the first workpiece and the member made of the siloxane and the second workpiece in such a manner as to be in contact with the surface irradiated with the ultraviolet ray; Pressurized by pressurization, or by heating the laminated workpiece, or by heating the laminated workpiece while being pressurized by the contact surface, thereby forming a member made of siloxane The intermediate is present between the first workpiece having a hydrophobic surface and the second workpiece having a hydrophobic surface.

(4) A touch panel having a touch sensor module and a portrait display device having a substrate on which a transparent conductive film is disposed, wherein the touch sensor module is provided with a coating of a decane coupling agent or a ruthenium a primer made of an oxyalkylene coating agent, a substrate provided with a transparent conductive film modified by ultraviolet irradiation on the surface coated with the primer, and a surface-modified yttrium oxide by ultraviolet irradiation The formed member is formed by laminating the substrate and each of the members made of the siloxane described above by the ultraviolet ray.

In the present invention, the following effects can be obtained.

(1) Applying a primer made of a decane coupling agent or a decane-based coating agent to a surface of a workpiece having a hydrophobic surface, a surface coated with a primer of the workpiece, and a member formed of a siloxane. Irradiating ultraviolet rays and bonding them to the aforementioned workpiece, whereby the surface of the workpiece can be made into a surface suitable for bonding (hydrophilicity) The surface) can be surely joined to the member formed by the aforementioned workpiece and the oxime.

Therefore, a resin such as PET having a hydrophobic surface, a workpiece provided with a transparent conductive film, or the like can be bonded to a member made of siloxane.

(2) irradiating one surface of a workpiece having a hydrophilic surface with ultraviolet rays, irradiating ultraviolet rays on a surface coated with a primer on a surface of a workpiece having a hydrophobic surface, and irradiating ultraviolet rays on both sides of a member made of a siloxane. Coating a surface of a workpiece having a hydrophilic surface, a workpiece having a hydrophobic surface, a member made of a hydrophobic surface, or a surface of a workpiece having a hydrophobic surface, or Irradiating the surface of the coated primer with ultraviolet rays, and irradiating ultraviolet rays on both sides of the member made of decane to form a workpiece having a hydrophobic surface and a member made of a siloxane and a workpiece having a hydrophobic surface. The ultraviolet ray irradiation is layered in the manner of facing it, and the film is bonded thereto, whereby the following effects can be obtained.

(a) Since the oxime does not cause coloring after a long period of time, it does not cause a state of bonding by OCA tape or OCR, and coloring after a long period of time.

Therefore, with the manufacture suitable for the touch panel, the image of the touch panel does not have the effect of discoloration.

(b) Even if the step structure of the conductive film is present in the joint surface, the helium oxide can be deformed and adhered in accordance with the step, so that it is easy to suppress the bubbles from entering the step portion at the time of attachment.

(c) It is possible to avoid problems such as difficulty in achieving uniformity of coating in the case of bonding using OCR, deformation at the time of hardening, and the like, and since the heat-resistant temperature of the siloxane is higher than the OCR, the ultraviolet ray can be irradiated. Device connection The light-irradiated surface of the helium oxide can be efficiently modified by the irradiation surface of the near-oxane.

(d) In general, components made of oxane reduce manufacturing costs because they are cheaper than OCA tape and OCR.

(e) In the case where the joining of the members made of the decane is used, even if the bonded workpiece and the member made of the decane are overlapped, the joining is not completed, and the pressing and heating for a predetermined period of time are performed. To complete the joint. Therefore, the workpiece and the siloxane can be easily separated after the overlap. Therefore, when the alignment of the workpiece and the member made of the decane is not sufficient, if it is shortly after the overlap, the two can be peeled off, and the member made of the siloxane is irradiated with ultraviolet rays again. Joint work. That is, it has reworkability compared to OCA tape.

(f) The surface of the member made of siloxane and the surface of the touch sensor module and the surface of the hydrophobic conductive film substrate which are difficult to bond even before the surface modification treatment by ultraviolet ray irradiation fit. Therefore, when the components of the touch sensor module are attached, the components formed by the siloxane can be used in place of the previous OCA tape and the OCR to fit the structural elements to form the touch sensor module. group.

10‧‧‧ position input device

10a‧‧‧Touch Sensor Module

10b‧‧‧Touch Panel Control Department

11‧‧‧ Cover glass

12‧‧‧Black matrix

13‧‧‧1st ITO electrode (first transparent conductive film)

14‧‧‧PET film

14a‧‧‧hard coating

15‧‧‧2nd ITO electrode (2nd transparent conductive film)

16,16a,16b‧‧‧glass substrate

17,17a, 17b‧‧‧Oxysiloxane (PDMS) substrate

18‧‧‧Bottom glue

21‧‧‧Wiring layer

22‧‧‧Touch Panel (TP) Control IC Division

23‧‧‧FPC (Flexible Printed Substrate)

24‧‧‧UV curable adhesive

30‧‧‧Portrait display device

31‧‧‧ polarizing film

32‧‧‧Portrait display panel

40‧‧‧UV (UV) light source

100‧‧‧ touch panel

Fig. 1 is a view showing an example of the structure of a touch panel composed of the bonding method of the present invention.

Fig. 2 is a view for explaining joining of a glass substrate having a hydrophilic surface and a PDMS substrate irradiated with ultraviolet rays.

Fig. 3 is a view (1) illustrating the bonding of the surface of the undercoat-coated PET film to the oxyalkylene plate.

Fig. 4 is a view (2) illustrating the bonding of the surface of the undercoat-coated PET film to the oxyalkylene plate.

Fig. 5 is a view for explaining a joining process (A-1) of a cover glass and a PET film having a first transparent conductive film (ITO electrode) provided on its surface.

Fig. 6 is a view (1) illustrating a bonding process (B-1) of a PET film on which a first transparent conductive film (ITO) is provided on the surface and a glass on which a second transparent conductive film (ITO) is provided.

Fig. 7 is a view (2) showing a bonding process (B-1) of a PET film on which a first transparent conductive film (ITO) is provided on the surface and a glass on which a second transparent conductive film (ITO) is provided.

Fig. 8 is a view showing a joining process (A-2) of a cover glass and a PET film having a first transparent conductive film (ITO) provided on its surface.

Fig. 9 is a view (1) illustrating a bonding process (B-2) of a PET film having a first transparent conductive film (ITO) on its surface and a glass provided with a second transparent conductive film (ITO) on its surface.

FIG. 10 is a view (2) illustrating a bonding process (B-2) of a PET film on which a first transparent conductive film (ITO) is provided on the surface and a glass on which a second transparent conductive film (ITO) is provided.

Fig. 11 is a view showing a joining process (A-3) of a cover glass and a PET film having a first transparent conductive film (ITO) provided on its surface.

Fig. 12 is a view showing a bonding work between a PET film having a first transparent conductive film (ITO) on its surface and a glass having a second transparent conductive film (ITO) on its surface. Diagram of Cheng (B-3).

Fig. 13 is a view showing another configuration example of a touch panel composed of the bonding method of the present invention.

Fig. 14 is a view for explaining a joining process (C-1) of a cover glass and a first glass substrate on which a first transparent conductive film (ITO) is provided.

FIG. 15 is a view for explaining a joining process (D-1) of a first glass substrate on which a first transparent conductive film (ITO) is provided on the surface and a second glass substrate on which a second transparent conductive film (ITO) is provided.

Fig. 16 is a view for explaining a joining process (C-2) of a cover glass and a first glass substrate on which a first transparent conductive film (ITO) is provided.

FIG. 17 is a view for explaining a bonding process (D-2) of a first glass substrate on which a first transparent conductive film (ITO) is provided on the surface and a second glass substrate on which a second transparent conductive film (ITO) is provided.

FIG. 18 is a schematic view of a touch panel composed of an image display device and a touch sensor module.

Hereinafter, an embodiment of the present invention will be described by taking a state in which a touch panel is manufactured as an example. In addition to the touch panel, the present invention is also applicable to the manufacture of the above-described organic EL, organic semiconductor, solar cell, and the like.

(1) Embodiment 1

Fig. 1 is a view showing a first structural example of the touch panel of the present invention.

The touch panel 100 is formed by the image display device 30 such as an LCD panel and the position input device 10 disposed at the upper portion thereof, as in the basic configuration shown in FIG.

The position input device 10 is a touch sensor module 10a for detecting a portion of the touch sensor surface touched by a finger or a stylus pen, and inputting information from a position of the touch sensor module 10a. And the touch panel control unit 10b of the image display device 30 is controlled based on the above information.

The touch sensor module 10a is a PET film 14 in which a first transparent conductive film (for example, an ITO electrode) pattern shown in FIG. 18(b) is laminated, and a second transparent conductive layer as shown in FIG. 18(c) is provided. The structure of the glass substrate 16 of the film (for example, ITO electrode) is composed of a cover glass 11, a siloxane substrate 17a, a primer 18, a first ITO electrode 13, a PET film 14, a primer 18, and a decyl oxide plate 17b. The primer 18, the second ITO electrode 15, and the glass substrate 16 are laminated in this order. Further, on both sides of the PET film 14, a light-transmissive hard coat layer 14a is provided to prevent damage of the PET film 14. The hard coat layer 14a is made of, for example, an acrylic resin as described above.

A black matrix 12 is formed on the peripheral edge portion of the surface of the cover glass 11 on the side opposite to the surface on which the pattern of the first ITO electrode 13 is provided on the PET film 14.

On the lower side of the glass substrate 16, a wiring layer 21 that is electrically connected to the first ITO electrode 13 and the second ITO electrode 15 and is also electrically connected to the touch panel control unit 10b is provided. The wiring layer 21 is attached from the side of the cover glass 11 At the time of observation, the black matrix 12 provided on the cover glass 11 is shielded so as to be disposed on the lower side of the glass substrate 16.

As described above, the touch panel control unit 10b is composed of a touch panel (TP) control IC unit 22 and an FPC (flexible printed circuit board) 23, and the FPC 23 is provided with a touch panel control IC unit 22. The FPC 23 is provided with an open annular structure at the center portion so as to be shielded from the black matrix 12 of the cover glass 11 when viewed from the cover glass 11, and the touch panel control IC portion 22 is provided in the ring shape. The upper part of the construction part.

The touch panel control unit 10b is electrically connected to the wiring layer 21 of the touch sensor module 10a, and is also electrically connected to the image display device 30.

The touch sensor module 10a and the touch panel control unit 10b are stacked on the image display device 30 to form a touch panel.

In the touch panel shown in FIG. 1 , the substrate of the first transparent conductive film (for example, the first ITO electrode 13 ) of the touch sensor module 10 a is a PET film 14 and a second transparent conductive film (for example, The substrate of the 2 ITO electrode 15) is an example of the glass substrate 16. In the example of the structure of the touch panel shown in FIG. 1, the thickness of each substrate and each layer is exaggerated for ease of explanation, and the actual relative relationship between the thickness of each substrate and each layer is different from that shown in FIG.

Hereinafter, a bonding process for manufacturing each workpiece of the touch sensor module will be described.

[Engineering A-1] Bonding of the cover glass to the PET film on which the first transparent conductive film (ITO electrode) is provided

This project is disclosed in Figure 5. This project discloses a method in which a sulfoxyalkylene group is interposed between a first workpiece having a hydrophilic surface and a second workpiece having a hydrophobic surface, and is bonded to the first workpiece having a hydrophilic surface. The cover glass 11 corresponds to the second workpiece having a hydrophobic surface, and is a PET film 14 provided with a first transparent conductive film (ITO electrode 13) on the surface of the hard coating layer 14a.

(a) Bonding of the cover glass 11 to the oxyalkylene sheet 17a

Before joining the lower surface of the cover glass 11 of the first workpiece having the hydrophilic surface and the first ITO electrode 13 side surface of the PET film 14 having the second workpiece having the hydrophobic surface, first, the cover glass 11 and the cover are applied. Bonding of an oxane (e.g., PDMS) substrate 17a.

As shown in Fig. 5 (a), the surface of the siloxane (PDMS) substrate 17a is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp to oxidize the surface of the siloxane alkyl plate 17a. The surface becomes a hydrophilic surface.

Next, the bonding surface of the cover glass 11 is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp.

Thereafter, the bonding surface of the cover glass 11 and the UV irradiation surface of the siloxane array 17a are overlapped. The bonding strength is increased by appropriately pressurizing and heating the cover glass 11 and the oxyalkylene group 17a which are overlapped and overlapped.

Furthermore, since the cover glass 11 itself is a hydrophilic surface, it is not necessary to irradiate UV light. However, because of the cover glass 11 When the bonding surface is irradiated with UV light, the bonding surface of the cover glass 11 is activated, and the impurities on the surface of the cover glass 11 are decomposed and removed, and the bonding of the cover glass 11 and the oxyalkylene group plate 17a can be performed more reliably.

Further, UV irradiation of the surface of the surface of the siloxane (PDMS) substrate 17a and the cover glass 11 may be performed simultaneously.

(b) Bonding of the oxyalkylene sheet 17a bonded to the cover glass 11 and the PET film 14

Next, as shown in FIG. 5(b), for example, in the PET film 14 on which the first ITO electrode 13 of the pattern of FIG. 18(b) is provided on the surface of the hard coat layer 14a, the surface of the pattern of the first ITO electrode 13 is provided. The primer 18 is applied. Next, the surface of the coating primer 18 is irradiated with UV light emitted from an ultraviolet (UV) light source such as an excimer lamp, so that the primer-coated surface becomes a surface suitable for bonding.

On the other hand, the surface of the nonoxyalkylene sheet 17a joined to the cover glass 11 and the surface opposite to the joint surface of the cover glass 11 are irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp. The UV-irradiated surface of the oxyalkylene group plate 17a is oxidized to make the surface a hydrophilic surface.

Thereafter, the surface of the UV-irradiated surface of the oxyalkylene group plate 17a and the primer coating surface of the PET film 14 subjected to the UV irradiation treatment are superposed, and the cover glass 11 and the oxyalkylene group 17a which are overlapped and laminated are appropriately subjected to Pressurizing and heating to bond the oxyalkylene oxide plate 17a to which the cover glass 11 has been bonded and the PET film having the first ITO electrode 13 provided on the surface thereof 14.

That is, the joining method employed in the present work (A-1) is as follows.

(1) The oxyalkylene group plate 17a is joined to the lower surface of the cover glass 11 of the first workpiece having a hydrophilic surface. In the bonding method, the oxyalkylene group plate 17a is irradiated with ultraviolet rays to make the ultraviolet ray-irradiated surface a hydrophilic surface, and the surface is laminated on the cover glass 11, and the cover glass 11 of the first workpiece having a hydrophilic surface is bonded to the enamel. Alkyl plate 17a. Further, as described above, the joint surface of the cover glass 11 may be irradiated with ultraviolet rays.

(2) The primer of the first transparent conductive film (ITO electrode 13) is applied to the hard coating layer 14a of the PET film 14 having the second workpiece having a hydrophobic surface.

(3) a first transparent conductive film is provided on the surface of the oxyalkylene oxide sheet 17a of the cover glass 11 bonded to the first workpiece having a hydrophilic surface, and on the surface of the PET film 14 having the second workpiece having a hydrophobic surface ( The primer 18 coated on the surface of the ITO electrode 13) is irradiated with ultraviolet rays to make both surfaces a hydrophilic surface.

(4) Overlapping the two ultraviolet irradiation surfaces to each other.

(5) overlapping the contact of each of the workpieces in the order of the cover film 11 of the PET film 14 having the second surface having the hydrophobic surface, the oxyalkylene oxide plate 17a, and the first workpiece having the hydrophilic surface The surface is heated while being pressurized.

Further, in (5) of the present bonding method, only pressurization or heating alone may be employed, but it is preferred to perform heating while pressurizing.

[Engineering B-1] Bonding of a PET film on which a first transparent conductive film (ITO electrode) is provided and a glass on which a second transparent conductive film (ITO electrode) is provided

This project is disclosed in Figures 6 and 7. This project discloses a method of bonding a first workpiece having a hydrophobic surface and a second workpiece having a hydrophobic surface through a siloxane chain, and the first workpiece having a hydrophobic surface is bonded to the cover glass 11 The PET film 14 corresponds to a second substrate having a hydrophobic surface, and is a glass substrate 16 on the surface of which a second transparent conductive film (ITO electrode 15) is provided.

(a) Bonding of the oxyalkylene sheet 17b to the PET film 14 (which has been bonded to the cover glass 11)

As shown in Fig. 6 (a), the surface of the oxyalkylene group plate 17b is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp to oxidize the surface of the oxyalkylene group plate 17b to make the surface hydrophilic. Sexual surface.

Next, the surface of the hard coating layer 14a on which the pattern of the first ITO electrode 13 is provided is bonded to the PET film 14 of the cover glass 11 through the oxyalkylene group plate 17a, and the pattern of the first ITO electrode 13 is provided as shown in FIG. 6(a). The primer 18 is applied to the surface of the hard coating layer 14a on the opposite side. Next, the surface of the coating primer 18 is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp, so that the primer-coated surface becomes a surface suitable for bonding.

Thereafter, the UV-irradiated surface of the counter-oxyalkylene oxide plate 17b is overlapped with The primer film-coated surface of the PET film 14 subjected to the UV irradiation treatment is appropriately pressed and heated with the PET film 14 and the oxyalkylene group plate 17b to bond the oxyalkylene group plate 17b and the PET film 14 on which the first ITO electrode 13 is provided. .

(b) Bonding of the PET film 14 (which has been bonded to the cover glass 11) to the glass substrate 16

As shown in Fig. 7 (b), the surface of the pseudo-oxyalkylene sheet 17b joined to the PET film 14 on the side opposite to the bonding surface of the PET film 14 is irradiated with an ultraviolet (UV) light source 40 such as an excimer lamp. The UV light oxidizes the UV-irradiated surface of the oxyalkylene group plate 17b to make the surface a hydrophilic surface.

Next, for example, in the glass substrate 16 on which the second ITO electrode 15 having the pattern shown in FIG. 18(c) is provided, the primer 18 is applied to the surface on which the second ITO electrode pattern is provided. Next, the surface of the coating primer 18 is irradiated with UV light emitted from an ultraviolet (UV) light source such as an excimer lamp, so that the primer-coated surface becomes a surface suitable for bonding.

Thereafter, the UV-irradiated surface of the oxyalkylene group plate 17b and the primer-coated surface of the glass substrate 16 subjected to the UV irradiation treatment are superimposed, and the glass substrate 16 and the oxyalkylene group 17b are appropriately pressurized and heated to bond the bonded surface. The oxyalkylene group 17b bonded to the PET film 14 and the glass substrate 16 on the surface of which the second ITO electrode 15 is provided.

Further, a resin substrate (for example, a PET film 14) on the surface of which the second ITO electrode 15 is provided may be used instead of the surface to provide the second ITO electrode 15 The condition of the glass substrate 16, however, the order of the engineering 2 does not change.

That is, the joining method in the present work (B-1) is as follows.

(1) In the PET film 14 having the hydrophobic surface, and in the PET film 14 to which the cover glass 11 is bonded, the surface of the hard coating layer 14a of the PET film 14 to which the cover glass 11 is not bonded (hydrophobic surface) The primer 18 is applied.

(2) On the surface of the oxyalkylene group plate 17b, the surface of the primer film 18 of the PET film 14 having the first workpiece having a hydrophobic surface is irradiated with ultraviolet rays to make the both surfaces a hydrophilic surface.

(3) overlapping the two ultraviolet irradiation surfaces with each other.

(4) heating the PET film 14 (the cover glass 11 having the first workpiece having the hydrophobic surface) in the order of the top surface of the PET film 14 (the bonded cover glass 11) .

(5) The primer 18 is applied to the surface of the glass substrate 16 having the second surface having the hydrophobic surface on the surface of the second transparent conductive film (ITO electrode 15).

(6) The surface of the oxyalkylene oxide sheet 17b bonded to the PET film 14 (the bonded cover glass 11) having the first workpiece having a hydrophobic surface, and the surface of the glass substrate 16 of the second workpiece having the hydrophobic surface The primer 18 to which the surface of the second transparent conductive film (ITO electrode 15) is applied is provided, and ultraviolet rays are irradiated to make both surfaces a hydrophilic surface.

(7) Overlapping the two ultraviolet irradiation surfaces to each other.

(8) overlapping the order of the PET film 14 (the bonded cover glass 11) having the first surface having the hydrophobic surface, the oxyalkylene group 17b, and the glass substrate 16 having the second workpiece having the hydrophobic surface The contact surfaces of the respective workpieces are heated while being pressurized.

Further, in (4) and (8) of the present bonding method, only pressurization or heating may be employed, but it is preferable to heat while pressurizing.

The touch sensor module of the touch panel shown in FIG. 1 is constructed by using [Engineering A-1] and [Engineering B-1] of the bonding method of the present invention.

The touch sensor module 10a and the touch panel control unit 10b are stacked on the image display device 30 such as an LCD panel to constitute a touch panel. Here, the configuration example of the touch panel control unit 10b and the touch panel are laminated in the order of the touch sensor module 10a, the touch panel control unit 10b, and the image display device 30, because The prior art is the same, and a detailed description is omitted here.

In the first embodiment, the touch sensor module of the touch panel is constructed by the following method. That is, when the structural elements of the touch sensor module are bonded together, a naphthenic (substrate) is used instead of the previous OCA tape or OCR, and the joint surface of the siloxane (substrate) and each structural element is used. Irradiation of ultraviolet light.

Then, in a substrate provided with a conductive film (for example, an ITO electrode) of the touch sensor module, a primer (for example, a decane coupling agent) is applied to a surface on which the conductive film is disposed, and the primer is applied to the primer. The coated surface is irradiated with ultraviolet rays.

Further, when the surface on the side where the conductive film is not provided on the side where the conductive film is provided is a hydrophobic surface, a primer 18 (for example, a decane coupling agent) is applied to the surface, and the primer is coated. The cloth is exposed to ultraviolet light.

By constructing the touch sensor module by the bonding method of the present invention, the following advantages can be obtained.

That is, unlike the OCA tape and the OCR, the decane does not cause coloring after a long period of time, and does not affect the discoloration of the portrait of the touch panel of the final product.

Further, even if the step structure of the conductive film exists in the state of the joint surface, the helium oxide can be deformed and adhered in accordance with the step, so that it is easy to suppress the bubbles from entering the step portion at the time of attachment. Moreover, even a member having a large area of the joint surface can be easily joined.

Moreover, since it is not joined by the hardening reaction of OCR, it is possible to avoid the problem of difficulty in uniformity of coating, deformation at the time of hardening, and the like in the coating process of the joint surface which is unique to OCR. Further, since the heat resistant temperature is higher than the OCR, the ultraviolet light source can be brought close to the irradiation surface of the siloxane chain, and the light irradiation surface of the siloxane chain can be efficiently modified. On the other hand, in the case where the ultraviolet curable OCR is used, the heat resistance of the OCR itself is low, and the ultraviolet curable OCR coated surface cannot be too close to the ultraviolet light source 40, and the ultraviolet light intensity on the ultraviolet curable OCR coated surface is changed. Low, the utilization efficiency of ultraviolet rays also becomes low. Along with this, the time required for the OCR hardening reaction for lamination is prolonged.

Also, in general, the price of the oxyalkylene sheet is higher than that of the OCA tape and OCR. Cheap.

Further, in the case of bonding using a siloxane chain, the bonding of the glass substrate or the resin substrate to the siloxane substrate irradiated with ultraviolet rays is not completed, and the bonding and heating of the substrates are performed for a predetermined period of time. , complete the joint. Therefore, the two substrates can be easily separated shortly after the overlap. Therefore, for example, when the alignment between the glass substrate or the resin substrate and the ultraviolet oxyalkylene group irradiated with ultraviolet rays is not sufficient, if the overlap is shortly after the overlap, the both may be peeled off, and the oxyalkylene plate may be irradiated with ultraviolet rays again to bond. engineering. That is, it has reworkability compared to OCA tape.

In particular, in the bonding method of the present invention, even a conductive film of a conductive film substrate of a nonoxyalkylene plate and a touch sensor module which are difficult to bond with respect to the surface modification treatment by the prior ultraviolet irradiation is used. The bonding of the surface and the bonding of the oxyalkylene plate to the conductive film substrate when the surface is hydrophobic may also introduce a decane coupling agent on the surface of the conductive film or the hydrophobic surface of the substrate, and irradiate the decane by ultraviolet irradiation. The coupling agent is surface-modified (making it into a surface state suitable for bonding), so that the aforementioned bonding can be performed.

That is, when the structural elements of the touch sensor module are bonded together, a naphthenic (substrate) is used instead of the previous OCA tape or OCR, and the joint surface of the siloxane (substrate) and each structural element is used. The ultraviolet sensor is irradiated, and the touch sensor module can be configured by bonding the structural elements of the touch sensor module.

[Modification (1) of the first embodiment]

In the first embodiment, an example of the touch sensor module of the touch panel shown in FIG. 1 has been disclosed by using [Engineering A-1] and [Engineering B-1] of the bonding method of the present invention.

That is, in [Engineering A-1], the order in which the cover glass 11 and the oxyalkylene group plate 17a are first joined, and then the oxyalkylene group plate 17a and the PET film 14 which have been bonded to the cover glass 11 are joined, The PET film 14 on which the cover glass 11 and the first transparent conductive film (ITO electrode 13) are provided on the surface is bonded.

Further, in [Engineering B-1], the PET film 14 and the oxyalkylene oxide plate 17b which have been bonded to the cover glass 11 are joined by first absorbing the oxyalkylene plate 17a composed of [Engineering A-1]. Next, the order of bonding the sulfoxyalkylene group 17b and the glass substrate 16 to which the PET film 14 of the cover glass 11 has been bonded is bonded to bond the oxyalkylene group 17b bonded to the PET film 14 and the glass on which the second ITO electrode 15 is provided. The substrate 16 constitutes a touch sensor module 10b.

However, the order in which the workpieces are attached is not limited to the order shown in the above [Engineering A-1] [Engineering B-1].

For example, in the above [Engineering A-1], the first layer of the oxyalkylene group plate 17a and the PET film 14 are joined, and then the oxyalkylene group plate 17a and the cover glass 11 which have been bonded to the PET film 14 are bonded, and joined. The cover glass 11 and the PET film 14 in which the first transparent conductive film (ITO electrode) is provided on the surface may be used. (The following is called [Engineering A-2]).

Similarly, in the aforementioned [Engineering B-1], the first joint is used. The oxyalkylene sheet 17b and the glass substrate 16 are joined to the PET film 14 having the glass substrate 16 bonded to the glass substrate 16 and the PET film 14 bonded to the cover glass 11 to bond the PET film 14 to which the cover glass 11 has been bonded. The touch-sensing module can also be configured as the touch-oxygen card 17b with the bonded glass substrate 16. (Hereinafter, this type of project replacing the project B-1 is referred to as [Engineering B-2]).

Hereinafter, the touch sensor of the touch panel shown in FIG. 1 will be described by using [Engineering A-2] and [Engineering B-2] using the bonding method of the present invention with reference to FIGS. 8, 9, and 10. An example of a module.

[Engineering A-2] Bonding glass and PET film with the first transparent conductive film (ITO electrode) on the surface

This project is disclosed in Figure 8. This project discloses a method in which a sulfoxyalkylene group is interposed between a first workpiece having a hydrophilic surface and a second workpiece having a hydrophobic surface, and is bonded to the first workpiece having a hydrophilic surface. The cover glass 11 corresponds to the second workpiece having a hydrophobic surface, and is a PET film 14 provided with a first transparent conductive film (ITO electrode 13) on the surface of the hard coating layer 14a.

(a) bonding of the oxyalkylene sheet 17a to the PET film 14

For example, in the PET film 14 having the first ITO electrode 13 as shown in FIG. 18(b) on the surface of the hard coat layer 14a, as shown in FIG. 8(a), the hard coat layer 14a provided with the pattern of the first ITO electrode 13 is provided. The surface is coated with a primer 18. Next, for the surface of the coating primer 18, the illumination is from the standard The ultraviolet light emitted from the ultraviolet (UV) light source 40 such as a sub lamp or the like causes the undercoat coated surface to be a surface suitable for bonding.

Further, the surface of the oxyalkylene group plate 17a is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp, and the surface of the oxyalkylene group plate 17a is oxidized to make the surface a hydrophilic surface.

Thereafter, the UV-irradiated surface of the oxyalkylene group plate 17a and the primer coating surface of the PET film 14 subjected to the UV irradiation treatment are superimposed, and the PET film 14 and the oxyalkylene group plate 17a are appropriately pressed and heated to bond the ruthenium. The oxyalkylene sheet 17a and the PET film 14 on the surface of which the first ITO electrode 13 is provided.

(b) bonding of the oxyalkylene oxide sheet 17a bonded to the PET film 14 to the cover glass 11

Next, as shown in FIG. 8(b), the surface of the pseudo-oxyalkylene sheet 17a bonded to the PET film 14 on the side opposite to the bonding surface of the PET film 14 is irradiated with an ultraviolet (UV) light source 40 from an excimer lamp or the like. The emitted UV light oxidizes the UV-irradiated surface of the oxirane plate 17a to make the surface a hydrophilic surface.

Further, the bonding surface of the cover glass 11 is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp.

Thereafter, the bonding surface of the UV-irradiated surface of the oxyalkylene group 17a bonded to the PET film 14 and the cover glass 11 is overlapped, and the cover glass 11 and the oxyalkylene group 17a which are overlapped and laminated are appropriately pressurized. Heating to increase joint strength.

Furthermore, since the cover glass 11 itself is a hydrophilic surface, it is not necessary to irradiate UV light. However, since the bonding surface of the cover glass 11 is activated by irradiating the bonding surface of the cover glass 11, the impurities on the surface of the cover glass 11 are decomposed and removed, and the cover glass 11 and the oxygen can be more surely performed. Bonding of the alkyl sheet 17a.

Further, UV irradiation of the surface of the siloxane (PDMS) substrate 17a bonded to the PET film 14 and the bonding surface of the cover glass 11 may be performed simultaneously.

That is, the joining method in the present work (A-2) is as follows.

(1) A primer 18 is applied to the surface of the PET film 14 having the second workpiece having a hydrophobic surface on the surface of the first transparent conductive film (ITO electrode 13).

(2) The surface of the oxyalkylene group plate 17a is coated with a primer 18 which is coated with a surface of the first transparent conductive film (ITO electrode 13) on the surface of the PET film 14 having a second surface having a hydrophobic surface, and is irradiated with ultraviolet rays. Make both surfaces a hydrophilic surface.

(3) overlapping the two ultraviolet irradiation surfaces with each other.

(4) The PET film 14 having the second workpiece having the hydrophobic surface and the contact surface of the workpiece in which the oxyalkylene group 17a is overlapped and joined are heated while being pressurized.

(5) Next, the surface of the oxyalkylene oxide sheet 17a to which the PET film 14 having the second workpiece having the hydrophobic surface is bonded is irradiated with ultraviolet rays on the joint surface of the cover glass 11 of the first workpiece having the hydrophilic surface.

(6) overlapping the two ultraviolet irradiation surfaces with each other.

(7) The contact of each of the workpieces is overlapped in the order of the cover film 11 of the PET film 14 having the second surface having the hydrophobic surface, the oxyalkylene oxide plate 17a, and the first workpiece having the hydrophilic surface. The surface is heated while being pressurized.

Further, in (4) and (7) of the present bonding method, only pressurization or heating may be employed, but it is preferable to heat while pressurizing.

[Engineering B-2] Bonding of a PET film on which a first transparent conductive film (ITO electrode) is provided on the surface and a glass on which a second transparent conductive film (ITO electrode) is provided

This project is disclosed in Figures 9 and 10. This project discloses a method of bonding a first workpiece having a hydrophobic surface and a second workpiece having a hydrophobic surface through a siloxane chain, and the first workpiece having a hydrophobic surface is bonded to the cover glass 11 The PET film 14 corresponds to a second substrate having a hydrophobic surface, and is a glass substrate 16 on the surface of which a second transparent conductive film (ITO electrode 15) is provided.

(a) bonding of the oxyalkylene group plate 17b to the glass substrate 16

As shown in Fig. 9 (a), the surface of the oxyalkylene group plate 17b is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp to oxidize the surface of the siloxane chain 17b to make the surface hydrophilic. Sexual surface.

Further, for example, in the glass substrate 16 on which the second ITO electrode 15 having the pattern shown in FIG. 18(c) is provided, the second ITO electrode is provided The surface of the 15 pattern is coated with a primer 18. Next, the surface of the coating primer 18 is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp, so that the primer-coated surface becomes a surface suitable for bonding.

Thereafter, the UV-irradiated surface of the oxyalkylene group plate 17b and the primer-coated surface of the glass substrate 16 subjected to the UV irradiation treatment are superimposed, and the glass substrate 16 and the oxyalkylene group plate 17b are appropriately pressurized and heated to bond the ruthenium. The oxyalkylene plate 17b and the glass substrate 16 on the surface of which the second ITO electrode 15 is provided.

As shown in Fig. 10 (b), the surface of the pseudo-oxyalkylene sheet 17b bonded to the glass substrate 16 on the side opposite to the bonding surface of the glass substrate 16 is irradiated with an ultraviolet (UV) light source 40 such as an excimer lamp. The UV light oxidizes the UV-irradiated surface of the oxyalkylene group plate 17b to make the surface a hydrophilic surface.

Next, on the surface on which the pattern of the first ITO electrode 13 is provided, the PET film 14 of the cover glass 11 is bonded through the primer 18 and the oxyalkylene group 17a, and as shown in FIG. 10(b), the pattern of the first ITO electrode 13 is provided. The primer 18 is applied to the surface of the hard coating layer 14a on the opposite side. Next, the surface of the coating primer 18 is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp, so that the primer-coated surface becomes a surface suitable for bonding.

Thereafter, the UV-irradiated surface of the oxyalkylene group plate 17b and the primer-coated surface of the PET film 14 subjected to the UV irradiation treatment are superimposed, and the PET film 14 and the oxyalkylene group 17b are appropriately pressed and heated to bond. The epoxy group 17b and the surface of the glass substrate 16 are bonded to each other. The PET film 14 of the first ITO electrode 13.

That is, the joining method in the present work (B-2) is as follows.

(1) A primer 18 is applied to the surface of the glass substrate 16 having the second workpiece having a hydrophobic surface on the surface of the second transparent conductive film (ITO electrode 15).

(2) The surface of the oxyalkylene group plate 17b is coated with the primer 18 which is coated with the surface of the second transparent conductive film (ITO electrode 15) on the surface of the glass substrate 16 having the second workpiece having a hydrophobic surface, and is irradiated with ultraviolet rays. Make both surfaces a hydrophilic surface.

(3) overlapping the two ultraviolet irradiation surfaces with each other.

(4) The contact surface of the workpiece in which the glass substrate 16 of the second substrate having the hydrophobic surface is overlapped and heated is pressurized while being pressurized.

(5) In the PET film 14 having the first workpiece having a hydrophobic surface and bonding the cover glass 11, the surface of the hard coating layer 14a of the PET film 14 to which the cover glass 11 is not bonded is coated with a primer 18 .

(6) A hard coating layer of the non-bonded cover glass 11 of the PET substrate bonded to the first workpiece having the hydrophobic surface on the surface of the oxyalkylene oxide sheet 17b to which the glass substrate 16 having the second workpiece having the hydrophobic surface is bonded The surface of the 14a coated primer 18 is irradiated with ultraviolet rays to make both surfaces a hydrophilic surface.

(7) Overlapping the two ultraviolet irradiation surfaces to each other.

(8) A thin PET film on the first workpiece having a hydrophobic surface The film 14 (with the cover glass 11 joined), the primer 18, the oxyalkylene group 17b, the primer 18, and the glass substrate 16 having the second workpiece having a hydrophobic surface are stacked in the order of the contact faces of the respective workpieces. Heated while pressurized.

Further, in (4) and (8) of the present bonding method, only pressurization or heating may be employed, but it is preferable to heat while pressurizing.

[Modification (2) of the first embodiment]

[Engineering A-1] [Engineering B-1] of the first embodiment and [Engineering A-2] [Engineering B-2] of the modification (1) of the first embodiment are repeated by bonding two workpieces Composition. However, it is also possible to form three workpieces at a time in each project.

For example, in the above [Engineering A-1] [Engineering A-2], the cover glass 11 and the oxyalkylene group plate 17a and the PET film 14 may be bonded first. (The following is called [Engineering A-3].)

Similarly, in the above [Engineering B-1] [Engineering B-2], the PET film 14 to which the bonded cover glass 11 is bonded and the oxyalkylene group plate 17b and the glass substrate 16 may be bonded (hereinafter, this is the case) The project is called [Engineering B-3]).

Hereinafter, the touch sensor module of the touch panel shown in FIG. 1 will be described by using [Engineering A-3] and [Engineering B-3] using the bonding method of the present invention with reference to FIGS. 11 and 12. example.

[Engineering A-3] Bonding work of the cover glass and the PET film provided with the first transparent conductive film (ITO electrode) on the surface

This project is disclosed in FIG. This engineering department reveals that in the siloxane chain A method of bonding between a first workpiece having a hydrophilic surface and a second workpiece having a hydrophobic surface, and corresponding to the first workpiece having a hydrophilic surface is a cover glass 11 corresponding to being hydrophobic The second workpiece of the surface is a PET film 14 provided with a first transparent conductive film (ITO electrode 13) on the surface of the hard coating layer 14a.

For example, in the PET film 14 having the first ITO electrode 13 as shown in FIG. 18(b) on the surface of the hard coat layer 14a, as shown in FIG. 11, the surface of the hard coat layer 14a provided with the pattern of the first ITO electrode 13 is coated. Cloth glue 18. The surface of the coating primer 18 is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp, so that the primer-coated surface becomes a surface suitable for bonding.

Further, as shown in Fig. 11, the UV light emitted from the ultraviolet (UV) light source 40 such as an excimer lamp is irradiated to both surfaces of the oxyalkylene group plate 17a to oxidize the surface of the siloxane chain 17a to make the surface hydrophilic. surface.

Further, as shown in FIG. 11, the bonding surface of the cover glass 11 is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp.

Thereafter, the bonding surface of the UV-irradiation treatment of the cover glass 11 and one side of the UV irradiation treatment of the oxyalkylene group 17a are superimposed, and the other side of the UV irradiation treatment of the oxyalkylene group 17a is performed. The undercoat coating surface of the PET film 14 subjected to UV irradiation treatment. Then, the workpiece laminated in the order of the cover glass 11, the oxyalkylene group 17a, and the PET film 14 is appropriately pressurized and heated, and the cover glass 11 and the oxyalkylene group 17a and the surface are first bonded. 1 ITO electric PET film 14 of the pole 13.

Furthermore, since the cover glass 11 itself is a hydrophilic surface, it is not necessary to irradiate UV light. However, since the bonding surface of the cover glass 11 is activated by irradiating the bonding surface of the cover glass 11, the impurities on the surface of the cover glass 11 are decomposed and removed, and the cover glass 11 and the oxygen can be more surely performed. Bonding of the alkyl sheet 17a.

Further, UV irradiation of the bonding surface of the cover glass 11, the both surfaces of the oxyalkylene group plate 17a, and the primer application surface of the PET film 14 may be performed simultaneously or individually.

That is, the joining method in the present work (A-3) is as follows.

(1) A primer 18 is applied to the surface of the PET film 14 having the second workpiece having a hydrophobic surface on the surface of the first transparent conductive film (ITO electrode 13).

(2) A first transparent conductive film is provided on the surface of the cover glass 11 of the first workpiece having the hydrophilic surface, the both surfaces of the siloxane array 17a, and the surface of the PET film 14 having the second workpiece having the hydrophobic surface. The primer 18 coated on the surface of the (ITO electrode 13) is irradiated with ultraviolet rays to make each ultraviolet irradiation surface a hydrophilic surface.

(3) Thereafter, one side of the UV irradiation treatment of the bonding surface of the protective cover glass 11 subjected to the UV irradiation treatment and the oxyalkylene group plate 17a, and the other side of the UV irradiation treatment of the oxyalkylene group plate 17a are overlapped. The surface of the PET film 14 and the undercoat coating surface of the UV film 14 subjected to UV irradiation treatment.

(4) Then, the cover glass 11, the siloxane substrate 17a, PET The contact faces of the respective workpieces stacked in the order of the film 14 are heated while being pressurized, and the respective workpieces are joined first.

Further, in (4) of the present bonding method, only pressurization or heating may be employed, but it is preferred to perform heating while pressurizing.

[Engineering B-3] Bonding of a PET film on which a first transparent conductive film (ITO electrode) is provided on the surface and a glass on which a second transparent conductive film (ITO electrode) is provided

This project is disclosed in FIG. This project discloses a method of bonding a first workpiece having a hydrophobic surface and a second workpiece having a hydrophobic surface through a siloxane chain, and the first workpiece having a hydrophobic surface is bonded to the cover glass 11 The PET film 14 corresponds to a second substrate having a hydrophobic surface, and is a glass substrate 16 on the surface of which a second transparent conductive film (ITO electrode 15) is provided.

As shown in FIG. 12, in the PET film 14 in which the cover glass 11 is bonded through the oxyalkylene group plate 17a, the primer 18 is applied to the surface of the hard coat layer 14a on the side opposite to the surface on which the cover glass 11 is bonded. Then, the surface of the coating primer 18 is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp, so that the primer-coated surface becomes a surface suitable for bonding.

Further, as shown in Fig. 12, the both surfaces of the oxyalkylene group plate 17b are irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp, and the surface of the oxyalkylene group plate 17b is oxidized to make the surface hydrophilic. surface.

Further, for example, in the glass substrate 16 on which the second ITO electrode 15 having the pattern shown in FIG. 18(c) is provided, as shown in FIG. 12, the primer 18 is applied to the surface on which the pattern of the second ITO electrode 15 is provided. Then, the surface of the coating primer 18 is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp, so that the primer-coated surface becomes a surface suitable for bonding.

Thereafter, one side of the UV-irradiation treatment of the primer coating surface of the UV-irradiation treatment of the PET film 14 and the UV-irradiation treatment of the siloxane-based alkyl sheet 17b, and the UV irradiation treatment of the siloxane-based alkyl sheet 17b are performed. The surface of the glass substrate 16 and the primer coating surface of the glass substrate 16 subjected to UV irradiation treatment.

Then, the workpiece laminated in the order of the PET film 14, the oxyalkylene group 17b, and the glass substrate 16 to which the cover glass 11 has been joined is appropriately pressurized and heated to bond the bonded cover glass 11 first. The PET film 14 and the oxyalkylene group plate 17b and the glass substrate 16 on the surface of which the second ITO electrode 15 is provided.

Further, UV irradiation of the undercoat application surface of the PET film 14, the both surfaces of the oxyalkylene group plate 17b, and the primer application surface of the glass substrate 16 may be simultaneously or individually performed.

That is, the joining method in the present work (B-3) is as follows.

(1) In the PET film 14 having the first workpiece having a hydrophobic surface and bonded to the cover glass 11, the surface of the hard coating layer 14a of the PET film 14 to which the cover glass 11 is not bonded is coated with a primer 18 .

(2) A primer 18 is applied to the surface of the glass substrate 16 having the second workpiece having a hydrophobic surface on the surface of the second transparent conductive film (ITO electrode 15).

(3) a primer 18 applied to the surface of the hard coating layer 14a on the opposite side of the surface of the PET film 14 to which the cover glass 11 is bonded to the first workpiece having a hydrophobic surface, The primer 18 applied to the surface of the glass substrate 16 of the second substrate having the hydrophobic surface on the surface of the second transparent conductive film (ITO electrode 15) on both surfaces of the oxyalkylene group plate 17b is irradiated with ultraviolet rays to irradiate each ultraviolet ray. The surface becomes a hydrophilic surface.

(4) Thereafter, one side of the UV-irradiation treatment of the primer coating surface of the UV-irradiated treatment of the PET film 14 and the UV-oxygenated substrate 17b, and the UV irradiation treatment of the oxyalkylene group 17b are performed. The other side is the primer coated surface of the glass substrate 16 subjected to UV irradiation treatment.

(5) Then, the contact surfaces of the respective workpieces laminated in the order of the PET film 14, the oxyalkylene group 17b, and the glass substrate 16 to which the cover glass 11 has been joined are heated while being pressurized, and the workpieces are joined first. .

Further, in (5) of the present bonding method, only pressurization or heating alone may be employed, but it is preferred to perform heating while pressurizing.

[Embodiment 2]

In the first embodiment, in the configuration example of the touch panel shown in FIG. 1, it is disclosed that the substrate constituting the first transparent conductive film (for example, the ITO electrode 13) is the PET film 14, and the second transparent conductive film (for example, , ITO The substrate of the pole 15) is the bonding method of the present invention used in the touch sensor module of the glass substrate 16.

In the second embodiment, the bonding method of the present invention employed in the touch sensor module of the configuration example of the touch panel shown in FIG. 13 is disclosed.

The glass substrate which is a substrate of a transparent conductive film has excellent visibility and durability compared with a film substrate. That is, the glass substrate has higher light transmittance than the film substrate, and can reduce the scattering of light and the influence of the distortion of the substrate, and the discoloration due to ultraviolet rays or the like is also small, so that the viewpoint of visibility is relatively It has advantages in film substrates. Further, the glass substrate also has excellent durability and water resistance in a wide temperature range, and has high weather resistance as compared with a film substrate. In the touch panel for mechanical equipment requiring high visibility and weather resistance, and the touch panel for outdoor use, as a substrate for a transparent conductive film, the demand for using a glass substrate has gradually increased. In recent years, the first and the first have been reviewed. 2 A glass substrate is used for any of the transparent conductive films. Further, the thickness of the glass substrate is gradually reduced, and similarly to the film substrate, the degree of freedom of the shape and the thickness of the panel can be made.

FIG. 13 is a view showing a bonding method using the present invention when both the substrate of the first transparent conductive film (for example, the ITO electrode 13) and the substrate of the second transparent conductive film (for example, the ITO electrode 15) are the glass substrates 16a and 16b. An example of the structure of the touch panel. Here, in FIG. 13(a), the first transparent conductive film 13 and the second transparent conductive film 15 are opposed to each other via the oxyalkylene group plate 17b.

In FIG. 13(a), the touch sensor module 10a is covered with a cover glass 11, a oxyalkylene group 17a, a first glass substrate 16a, and a first ITO. The electrode 13, the primer 18, the oxyalkylene group 17b, the primer 18, the second ITO electrode 15, and the second glass substrate 16b are laminated in this order. The other structures are the same as in Fig. 1.

FIG. 13(b) shows a state in which only the second transparent conductive film 15 of the first transparent conductive film 13 and the second transparent conductive film 15 are in contact with the oxyalkylene oxide plate 17b.

In FIG. 13(b), the touch sensor module 10a is covered with a cover glass 11, a siloxane chain 17a, a primer 18, a first ITO electrode 13, a first glass substrate 16a, and a siloxane substrate. 17b, the primer 18, the second ITO electrode 15, and the second glass substrate 16b are laminated in this order. The other structures are the same as in Fig. 13(a).

In the configuration example of the touch panel shown in FIG. 13, the thickness of each substrate and each layer is exaggerated for ease of explanation, and the actual relative relationship between the thickness of each substrate and each layer is different from that shown in FIG.

First, the bonding method of the present invention used in the manufacture of the touch panel of the structural example shown in Fig. 13 (a) will be described with reference to Figs. 14 and 15 .

[Engineering C-1] Bonding of the cover glass to the first glass substrate on which the first transparent conductive film (ITO electrode) is provided

This project is disclosed in FIG. In the present process, the cover glass 11 is joined to the first glass substrate 16a on the surface of which the first transparent conductive film (ITO electrode 13) is provided. This project is a pre-engineering before [Engineering 3] to which the joining method of the present invention is applied.

(a) Bonding of the cover glass 11 to the oxyalkylene sheet 17a

As shown in Fig. 14 (a), the surface of the siloxane (PDMS) substrate 17a is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp to oxidize the surface of the siloxane chain 17a. Become a hydrophilic surface.

Next, the bonding surface of the cover glass 11 is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp.

Thereafter, the bonding surface of the cover glass 11 and the UV irradiation surface of the siloxane array 17a are overlapped. The bonding strength is increased by appropriately pressurizing and heating the cover glass 11 and the oxyalkylene group 17a which are overlapped and overlapped.

Furthermore, since the cover glass 11 itself is a hydrophilic surface, it is not necessary to irradiate UV light. However, since the bonding surface of the cover glass 11 is activated by irradiating the bonding surface of the cover glass 11, the impurities on the surface of the cover glass 11 are decomposed and removed, and the cover glass 11 and the oxygen can be more surely performed. Bonding of the alkyl sheet 17a.

Further, UV irradiation of the surface of the surface of the siloxane (PDMS) substrate 17a and the cover glass 11 may be performed simultaneously.

(b) bonding of the oxyalkylene group plate 17a bonded to the cover glass 11 and the first glass substrate 16

Then, as shown in Fig. 14 (b), the surface opposite to the bonding surface of the silicone metal plate 17a bonded to the cover glass 11 and the cover glass 11 is irradiated with ultraviolet rays (UV) from an excimer lamp or the like. Light source 40 is released The UV light oxidizes the UV-irradiated surface of the oxyalkylene group plate 17a to make the surface a hydrophilic surface.

On the other hand, for example, in the first glass substrate 16a of the first ITO electrode 13 having the pattern shown in FIG. 18(b), the surface opposite to the surface on which the first ITO electrode 13 is provided is irradiated with ultraviolet rays from an excimer lamp or the like. (UV) The UV light emitted by the light source 40.

Thereafter, the UV-irradiated surface of the first glass substrate 16a of the first glass substrate 16a and the UV-irradiated surface of the oxyalkylene group plate 17a bonded to the cover glass 11 are overlapped. The bonding strength is increased by appropriately pressurizing and heating the cover glass 11 and the oxyalkylene group 17a which are overlapped and overlapped.

In addition, as described above, the surface of the first glass substrate 16a opposite to the surface on which the first ITO electrode 13 is provided (the joint surface of the first glass substrate 16a) itself is a hydrophilic surface, and it is not necessary to irradiate UV light. However, by irradiating the bonding surface of the first glass substrate 16a with UV light, the bonding surface of the first glass substrate 16a is activated, and the impurities on the bonding surface of the first glass substrate 16a are decomposed and removed. 1 bonding of the glass substrate 16a to the oxyalkylene group 17a.

Further, UV irradiation of the surface of the surface of the siloxane (PDMS) substrate 17a and the first glass substrate 16a may be performed simultaneously.

[Project D-1] Bonding of the first glass substrate on which the first transparent conductive film (ITO electrode) is provided and the second glass substrate on the surface on which the second transparent conductive film (ITO electrode) is provided

This project is disclosed in FIG. This engineering department reveals through the oxyalkylene board The method of bonding the first workpiece having the hydrophobic surface to the second workpiece having the hydrophobic surface corresponds to the first surface of the first workpiece having the hydrophobic surface, and the other surface is provided with the cover glass 11 and the other surface. The first glass substrate 16a of the first ITO electrode 13 corresponds to the second glass substrate 16b on the surface of which the second transparent conductive film (ITO electrode 15) is provided on the surface of the second workpiece having a hydrophobic surface.

(a) Bonding of the first glass substrate 16 (bonded cover glass 11) to the oxyalkylene group 17b

As shown in Fig. 15 (a), the surface of the oxyalkylene group plate 17b is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp, and the surface of the oxyalkylene group plate 17b is oxidized to make the surface hydrophilic. Sexual surface.

Next, as shown in Fig. 15 (a), in the prior art, the first ITO electrode 13 is provided in the first glass substrate 16a in which the cover glass 11 is bonded to the other surface and the first ITO electrode 13 is provided on the other surface. The surface of the pattern is coated with a primer 18. Next, the surface of the coating primer 18 is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp, so that the primer-coated surface becomes a surface suitable for bonding.

Thereafter, the UV-irradiated surface of the oxyalkylene group plate 17b and the primer-coated surface of the first glass substrate 16a subjected to the UV irradiation treatment are superimposed, and the first glass substrate 16a and the oxyalkylene group 17b are appropriately pressurized and heated. The first glass substrate 16a of the first ITO electrode 13 is bonded to the other surface of the oxyalkylene group plate 17b to bond the cover glass 11 to the other surface.

(b) Joining of the first glass substrate 16a (with the cover glass 11 joined) and the second glass substrate 16b

Then, as shown in Fig. 15 (b), the surface of the pseudo-oxyalkylene sheet 17b joined to the first glass substrate 16a on the side opposite to the bonding surface of the first glass substrate 16a is irradiated with ultraviolet rays from an excimer lamp or the like ( UV light emitted from the light source 40 oxidizes the UV-irradiated surface of the oxyalkylene group plate 17b to make the surface a hydrophilic surface.

On the other hand, for example, in the second glass substrate 16b on which the second ITO electrode 15 of the pattern shown in FIG. 18(c) is provided, the primer 18 is applied to the surface on which the second ITO electrode pattern is provided. Next, the surface of the coating primer 18 is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp, so that the primer-coated surface becomes a surface suitable for bonding.

Thereafter, the UV-irradiated surface of the oxyalkylene group plate 17b to which the first glass substrate 16a has been bonded and the primer-coated surface of the second glass substrate 16b subjected to the UV irradiation treatment are overlapped, and the second glass substrate 16b is bonded to the second glass substrate 16b as appropriate. The oxyalkylene group plate 17b of the first glass substrate 16a is pressurized and heated to bond the oxyalkylene group plate 17b to which the first glass substrate 16a is bonded and the second glass substrate 16b on the surface of which the second ITO electrode 15 is provided.

That is, the joining method in the present work (D-1) is as follows.

(1) in the first glass substrate 16a in which the first workpiece having the hydrophobic surface is bonded to the cover glass 11 through the oxyalkylene group plate 17a and the first ITO electrode 13 is provided on the other surface First A primer 18 is applied to the surface of the ITO electrode 13.

(2) The surface of the first glass substrate 16a of the first workpiece having the hydrophobic surface is irradiated with ultraviolet rays on the surface of the oxyalkylene group plate 17b so that both surfaces become hydrophilic surfaces.

(3) overlapping the two ultraviolet irradiation surfaces with each other.

(4) Pressurizing the contact faces of the respective workpieces in the order of the first glass substrate 16a (the cover glass 11 to which the first workpiece having the hydrophobic surface is formed) Heat on one side.

(5) In the second glass substrate 16b of the second workpiece having the hydrophobic surface, the primer 18 is applied to the surface of the second transparent conductive film (ITO electrode 15).

(6) The surface of the oxyalkylene oxide sheet 17b bonded to the first glass substrate 16a (the bonded cover glass 11) having the first workpiece having a hydrophobic surface, and the second glass of the second workpiece having the hydrophobic surface On the surface of the substrate 16b, a primer 18 to which the surface of the second transparent conductive film (ITO electrode 15) is applied is provided, and ultraviolet rays are irradiated to make the both surfaces a hydrophilic surface.

(7) Overlapping the two ultraviolet irradiation surfaces to each other.

(8) The first glass substrate 16a (with the cover glass 11) having the first workpiece having the hydrophobic surface, the second epoxy substrate 17b, and the second glass substrate 16b having the second surface having the hydrophobic surface The order is superimposed by superimposing the contact faces of the respective workpieces while heating.

Further, in (4) and (8) of the present bonding method, only pressurization or heating may be employed, but it is preferable to heat while pressurizing.

Next, the manufacture of FIG. 13 will be described with reference to FIGS. 16 and 17 . (b) The bonding method of the present invention to which the touch panel of the structural example is shown.

[Engineering C-2] Bonding of the cover glass to the first glass substrate on which the first transparent conductive film (ITO electrode) is provided

This project is disclosed in FIG. This project discloses a method of bonding a first workpiece having a hydrophilic surface and a second workpiece having a hydrophobic surface through a siloxane chain, and the first workpiece having a hydrophilic surface is a cover glass 11 The second glass substrate 16a having the first transparent conductive film (ITO electrode 13) on its surface is provided on the second workpiece having a hydrophobic surface.

(a) Bonding of the cover glass 11 to the oxyalkylene sheet 17a

Before bonding the lower surface of the cover glass 11 of the first workpiece to the first ITO electrode 13 side surface of the first glass substrate 16a of the second workpiece, first, the cover glass 11 and the siloxane (for example, PDMS) substrate are used. Engagement of 17a.

As shown in Fig. 16 (a), the surface of the siloxane (PDMS) substrate 17a is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp to oxidize the surface of the siloxane array 17a. Become a hydrophilic surface.

Next, the bonding surface of the cover glass 11 is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp.

Thereafter, the joint surface of the cover glass 11 is overlapped with the oxygen The UV-irradiated surface of the alkyl plate 17a. The bonding strength is increased by appropriately pressurizing and heating the cover glass 11 and the oxyalkylene group 17a which are overlapped and overlapped.

Furthermore, since the cover glass 11 itself is a hydrophilic surface, it is not necessary to irradiate UV light. However, since the bonding surface of the cover glass 11 is activated by irradiating the bonding surface of the cover glass 11, the impurities on the surface of the cover glass 11 are decomposed and removed, and the cover glass 11 and the oxygen can be more surely performed. Bonding of the alkyl sheet 17a.

Further, UV irradiation of the surface of the substrate of the siloxane (PDMS) substrate and the cover glass 11 may be performed simultaneously.

(b) bonding of the oxyalkylene group plate 17a of the cover glass 11 to the first glass substrate 16a

Next, as shown in FIG. 16(b), for example, in the first glass substrate 16a on which the first ITO electrode 13 of the pattern shown in FIG. 18(b) is provided, a primer is applied to the surface on which the pattern of the first ITO electrode 13 is provided. 18. Next, the surface of the coating primer 18 is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp, so that the primer-coated surface becomes a surface suitable for bonding.

On the other hand, the surface of the nonoxyalkylene sheet 17a joined to the cover glass 11 and the surface opposite to the joint surface of the cover glass 11 are irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp. The UV-irradiated surface of the oxyalkylene group plate 17a is oxidized to make the surface a hydrophilic surface.

Thereafter, the surface of the oxyalkylene group plate 17a subjected to the UV irradiation treatment and the primer coating surface of the first glass substrate 16a subjected to the UV irradiation treatment are superposed, and the cover glass 11 and the oxyalkylene group are appropriately overlapped. 17a is pressurized and heated to bond the oxyalkylene oxide plate 17a to which the cover glass 11 has been bonded and the first glass substrate 16a on the surface of which the first ITO electrode 13 is provided.

That is, the joining method employed in the present project (C-2) is as follows.

(1) The oxyalkylene group plate 17a is joined to the lower surface of the cover glass 11 of the first workpiece having a hydrophilic surface. In the bonding method, the oxyalkylene group plate 17a is irradiated with ultraviolet rays, and the ultraviolet ray-irradiated surface is made into a hydrophilic surface. The surface is laminated on the cover glass 11, and the cover glass 11 of the first workpiece and the oxyalkylene group plate 17a are joined. Further, as described above, the joint surface of the cover glass 11 may be irradiated with ultraviolet rays.

(2) The primer 18 is applied to the surface of the first transparent substrate (ITO electrode 13) on the first glass substrate 16a of the second workpiece having the hydrophobic surface.

(3) The first transparent conductive film is provided on the surface of the oxyalkylene oxide sheet 17a of the cover glass 11 bonded to the first workpiece having the hydrophilic surface, and the first glass substrate 16a of the second workpiece having the hydrophobic surface. The primer 18 coated on the surface of the (ITO electrode 13) is irradiated with ultraviolet rays to make both surfaces a hydrophilic surface.

(4) Overlapping the two ultraviolet irradiation surfaces to each other.

(5) Cover glass of the first workpiece having a hydrophilic surface In the order of the glass 11, the oxyalkylene group plate 17a, and the first glass substrate 16a of the second workpiece, the contact faces of the respective workpieces are superimposed and heated while being pressurized.

Further, in (5) of the present bonding method, only pressurization or heating alone may be employed, but it is preferred to perform heating while pressurizing.

[Project D-2] Bonding of the first glass substrate on which the first transparent conductive film (ITO electrode) is provided and the second glass substrate on the surface on which the second transparent conductive film (ITO electrode) is provided

This project is disclosed in FIG. This project also discloses a method of bonding a first workpiece having a hydrophilic surface and a second workpiece having a hydrophobic surface through a siloxane chain, and the first workpiece having a hydrophilic surface is provided with a first ITO. The first glass substrate 16a of the cover glass 11 is bonded to one surface of the electrode 13 and corresponds to the second glass substrate 16b on the surface of which the second transparent conductive film (ITO electrode 15) is provided on the surface of the second workpiece having a hydrophobic surface.

(a) Joining of the first glass substrate 16a (with the cover glass 11 joined) and the oxyalkylene group 17b

The surface of the first glass substrate 16a of the first glass substrate 16a having the hydrophilic surface joined to the first ITO electrode 13 side of the bonded cover glass 11 and the second glass substrate 16b of the second workpiece having the hydrophobic surface Before the second ITO electrode 15 side surface, first, the first glass substrate 16a (the bonded cover glass 11) is bonded to the germanium oxide (for example, PDMS) substrate 17b.

As shown in Fig. 17 (a), the surface of the oxyalkylene group plate 17b is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp to oxidize the surface of the oxyalkylene group plate 17b to make the surface hydrophilic. Sexual surface.

Then, as shown in Fig. 17 (a), in the previous process, ultraviolet rays (UV) from an excimer lamp or the like are irradiated to the surface on the opposite side of the first ITO electrode 13 side of the bonded cover glass 11 of the first glass substrate 16a. The UV light emitted by the light source 40.

Thereafter, the UV-irradiated surface of the conjugated oxyalkylene group plate 17b and the UV-irradiated surface of the first glass substrate 16a are superimposed, and the contact faces of the first glass substrate 16a and the oxyalkylene oxide plate 17b are appropriately pressurized and heated to bond the ruthenium. The oxyalkylene sheet 17b and the one surface thereof are bonded to the first glass substrate 16a of the cover glass 11.

(b) Joining of the first glass substrate 16a (with the cover glass 11 joined) and the second glass substrate 16b

Then, as shown in Fig. 17 (b), the surface of the pseudo-oxyalkylene sheet 17b joined to the first glass substrate 16a on the side opposite to the bonding surface of the first glass substrate 16a is irradiated with ultraviolet rays from an excimer lamp or the like ( UV light emitted from the light source 40 oxidizes the UV-irradiated surface of the oxyalkylene group plate 17b to make the surface a hydrophilic surface.

On the other hand, for example, in the second glass substrate 16b on which the second ITO electrode 15 of the pattern shown in FIG. 18(c) is provided, the primer 18 is applied to the surface on which the pattern of the second ITO electrode 15 is provided. Next, for this coating bottom The surface of the glue 18 is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp, so that the primer-coated surface becomes a surface suitable for bonding.

Thereafter, the UV-irradiated surface of the oxyalkylene group plate 17b to which the first glass substrate 16a has been bonded and the primer-coated surface of the second glass substrate 16b subjected to the UV irradiation treatment are overlapped, and the second glass substrate 16b is bonded to the second glass substrate 16b as appropriate. The oxyalkylene group plate 17b of the first glass substrate 16a is pressurized and heated to bond the oxyalkylene group plate 17b to which the first glass substrate 16a is bonded and the second glass substrate 16b on the surface of which the second ITO electrode 15 is provided.

That is, the joining method in this project (D-2) is as follows.

(1) The first workpiece having a hydrophilic surface is the other surface of the first glass substrate 16a on which the cover glass 11 is bonded to the surface of the first ITO electrode 13 via the oxyalkylene group plate 17a, and The surface of the oxyalkylene group plate 17b is irradiated with ultraviolet rays, and the first glass substrate 16a and the oxyalkylene group plate 17b having the first workpiece having the hydrophilic surface are laminated so that the ultraviolet ray irradiation surfaces of the two workpieces are in close contact with each other, and the hydrophilic surface is bonded. The first glass substrate 16a of the first workpiece and the oxyalkylene group plate 17b.

(2) In the second glass substrate 16b of the second workpiece having the hydrophobic surface, the primer 18 is applied to the surface on which the second transparent conductive film (ITO electrode 15) is provided.

(3) The surface of the oxyalkylene oxide sheet 17b bonded to the first glass substrate 16a (the bonded cover glass 11) having the first workpiece having a hydrophilic surface, and the second glass of the second workpiece having the hydrophobic surface The surface of the substrate 16b on which the second transparent conductive film (ITO electrode 15) is provided is coated. The primer 18 is irradiated with ultraviolet rays to make both surfaces a hydrophilic surface.

(4) Overlapping the two ultraviolet irradiation surfaces to each other.

(5) The first glass substrate 16a (with the cover glass 11) having the first workpiece having the hydrophilic surface, the second epoxy substrate 17b, and the second glass substrate 16b having the second surface having the hydrophobic surface The order is superimposed by superimposing the contact faces of the respective workpieces while heating.

Further, in (5) of the present bonding method, only pressurization or heating alone may be employed, but it is preferred to perform heating while pressurizing.

The touch sensor module of the touch panel shown in FIG. 13(a) is constructed by using [Engineering C-1] and [Engineering D-1] of the bonding method of the present invention.

Moreover, the touch sensor module of the touch panel shown in FIG. 13(b) is constructed by [Engineering C-2] and [Engineering D-2] using the bonding method of the present invention.

The touch sensor module 10a and the touch panel control unit 10b are stacked on the image display device 30 such as an LCD panel to constitute a touch panel. Here, the configuration example of the touch panel control unit 10b and the touch panel are laminated in the order of the touch sensor module 10a, the touch panel control unit 10b, and the image display device 30, because The prior art is the same, and a detailed description is omitted here.

Even in the second embodiment, in the bonding of the respective components of the touch sensor module, a neodymium (substrate) is used instead of the previous OCA tape or OCR, and the paraxane (substrate) and The joint surface of each structural element is irradiated with ultraviolet rays.

Then, in a substrate provided with a conductive film (for example, an ITO electrode) of the touch sensor module, a primer (for example, a decane coupling agent) is applied to a surface on which the conductive film is disposed, and the primer is coated. The cloth is exposed to ultraviolet light. Therefore, the same effects as in the first embodiment can be exhibited.

In particular, the touch sensor module constructed in the second embodiment uses only a glass substrate as the substrate of the transparent conductive film. Therefore, the touch panel incorporated in the touch sensor module has High visibility and weather resistance.

Moreover, by using a glass substrate as a substrate of a transparent conductive film, the surface of the transparent conductive film on the opposite side to the surface on which the transparent conductive film is provided is a hydrophilic surface. Therefore, it is not necessary to introduce a primer for this side. In other words, the manufacturing process of the touch sensor module constructed in the second embodiment is less than the surface of the touch panel manufactured in the first embodiment. Therefore, it can be simplified.

[Experimental example]

As described above, in the bonding method of the present invention, the oxime group plate which is modified by the ultraviolet ray irradiation to form a hydrophilic surface is interposed between the first workpiece and the second workpiece having the conductive film on the joint surface. The first workpiece and the second workpiece are laminated on the joint surface, and the first workpiece and the second workpiece are laminated and subjected to heat and pressure treatment to bond the first workpiece and the second workpiece. In particular, in the bonding method of the present invention, the surface of the conductive film of the conductive film substrate and the surface of the conductive film of the conductive film substrate which are not bonded to the surface modification treatment by the previous ultraviolet irradiation are used, and the oxygen is contained. Alkyl plate and When the conductive film substrate is bonded to the surface of the conductive film, a decane coupling agent may be introduced onto the surface of the conductive film or the hydrophobic surface of the substrate, and the decane coupling agent may be surface-modified by ultraviolet irradiation (making it suitable) The surface state of the joint), so that the aforementioned bonding can be performed.

Hereinafter, an experimental example of a state in which a base epoxy is used to bond a siloxane array and a conductive thin film substrate provided with a conductive film will be disclosed.

As the fluorinated alkyl group, PDMS was used, and as the conductive film substrate, a PET film in which an ITO layer was provided on one surface was used. Further, as the primer, a decane coupling agent was used. The decane coupling agent is KBE-9007 manufactured by Shin-Etsu Chemical Co., Ltd., and has a structural formula of (C ₂ H ₅ O) ₃ SiC ₃ H ₆ N=C=O.

First, an acetone diluted solution of the above decane coupling agent was applied onto the ITO layer of the PET film 14 by a spin coating method.

Next, the surface of the PDMS substrate (oxyalkylene oxide plate) and the surface of the PET film coated with the decane coupling agent were irradiated with ultraviolet rays.

For the ultraviolet irradiation, an excimer lamp that emits a vacuum ultraviolet ray (VUV) having a center wavelength of 172 nm was used, and the irradiation conditions were such that the illuminance on the irradiation surface was 5 mW/cm ² and the irradiation time was 180 seconds.

After the VUV irradiation, the PDMS substrate and the PET film were superposed on each other so that the VUV irradiation surfaces of the PDMS substrate and the PET film were in contact with each other, and the temperature of both of them was 100 ° C while applying a pressure of 0.25 MPa to both of them. Way to heat. The heating time is 30 seconds. The PDMS substrate and the PET film were bonded by the above procedure.

That is, it is known that by this experiment, a sulfoxyalkyl group which was previously unable to be bonded even by surface modification treatment by ultraviolet irradiation can be performed. The bonding of the board to the surface of the conductive film of the conductive film substrate. Similarly, it is also possible to bond a fluorinated alkyl plate to a conductive film substrate having a hydrophobic surface.

Further, as the primer, the same result was obtained even if another decane coupling agent (for example, KBE-403 manufactured by Shin-Etsu Chemical Co., Ltd.: Formula (1) reveals a structural formula) was used.

Further, as the primer 18, a decane-based coating agent (for example, colcoat N-103X manufactured by colcoat Co., Ltd.) is used (approximately 2% is dispersed in ethanol: about 4%, 2) -propanol: 40%, 1-butanol: 50% mixed solvent)) The same result was obtained.

The bonding method of the present invention is also applicable to the state of the touch sensor module of the structure other than the touch sensor module having the structure shown in FIGS. 1 and 13 .

For example, in FIG. 13(a), the first and second glass substrates 16a and 16b on which the transparent conductive film is provided are used as the first and second resin substrates formed of the PET film 14 or the like. At this time, [Engineering C-1] shown in Fig. 14 is replaced with [Engineering A-1] shown in Fig. 5. Furthermore, the subsequent [Engineering D-1] can be directly applied.

10‧‧‧ position input device

10a‧‧‧Touch Sensor Module

10b‧‧‧Touch Panel Control Department

11‧‧‧ Cover glass

12‧‧‧Black matrix

13‧‧‧1st ITO electrode

14‧‧‧PET film

14a‧‧‧hard coating

15‧‧‧2nd ITO electrode

16‧‧‧ glass substrate

17a, 17b‧‧‧Oxysiloxane (PDMS) substrate

18‧‧‧Bottom glue

21‧‧‧Wiring layer

22‧‧‧Touch Panel (TP) Control IC Division

23‧‧‧FPC (Flexible Printed Substrate)

24‧‧‧UV curable adhesive

30‧‧‧Portrait display device

31‧‧‧ polarizing film

32‧‧‧Portrait display panel

100‧‧‧ touch panel

Claims (4)

A method for bonding a workpiece, which is a method of bonding a workpiece having a hydrophobic surface to a member made of a siloxane, characterized in that: a decane coupling agent is coated on one side of a workpiece having a hydrophobic surface Or a primer formed by a phthalic acid-based coating agent; a surface of the workpiece coated with a primer; and a member made of the oxime oxide; and a surface of the workpiece irradiated with ultraviolet rays; The surface of the component formed by the siloxane is irradiated by ultraviolet light contact; the contact surface of the workpiece laminated with the arson gas is pressurized by pressurization, or the laminated workpiece Heating is carried out by heating with a member made of a siloxane or by laminating a workpiece formed of siloxane and pressing the contact surface. A method for bonding a workpiece, wherein a member made of a siloxane is interposed between a first workpiece having a hydrophilic surface and a second workpiece having a hydrophobic surface, and is characterized in that: Applying a primer made of a decane coupling agent or a decane-based coating agent to the surface of the second workpiece having a hydrophobic surface; applying a primer to one surface of the first workpiece and the second workpiece Both sides of the surface and the member made of the arsonane are irradiated with ultraviolet rays; and the first workpiece and the member made of the oxime and the second workpiece are brought into contact with each other by the surface irradiated with the ultraviolet ray. Lamination; pressurizing the contact surface as described above, or the first and The second workpiece is heated by a member made of a siloxane, or the first and second workpieces laminated with the argon gas are heated while being pressurized by the contact surface. A method for bonding a workpiece, wherein a member made of a siloxane is interposed between a first workpiece having a hydrophobic surface and a second workpiece having a hydrophobic surface, and is characterized in that: Applying a primer made of a decane coupling agent or a decane-based coating agent to the surfaces of the first workpiece and the second workpiece having a hydrophobic surface; applying the primer to the first workpiece and the second workpiece Both sides of the surface and the member made of the arsonane are irradiated with ultraviolet rays; and the first workpiece and the member made of the oxime and the second workpiece are brought into contact with each other by the surface irradiated with the ultraviolet ray. Laminating; pressing the contact surface to be pressurized, or heating the laminated workpiece, or heating the laminated workpiece while being pressurized by the contact surface. A touch panel is provided with a touch sensor module having a transparent conductive film and a touch panel of the image display device, wherein the touch sensor module includes a coating a primer made of a decane coupling agent or a decane-based coating agent, a substrate provided with a transparent conductive film modified by ultraviolet irradiation on the surface of the primer, and a surface modified by ultraviolet irradiation A member made of a siloxane, wherein the substrate and the member made of the oxime are laminated by facing each of the ultraviolet rays.