TWI537781B - Workpiece fit method and touch panel - Google Patents

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, for example, a transparent conductive film such as an ITO (Indium Tin Oxide) transparent electrode, which is used to bond a member made of a siloxane to a workpiece having a hydrophobic surface to adhere to each other. And a touch panel manufactured by laminating 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. Further, as a manufacturer of a bonded workpiece, a touch panel is known. The touch panel is contacted by a finger or a stylus A display that displays an image, and a controller that can perform on-off or data input of a switch 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, the first ITO electrode 13 is provided on the PET film 14 On the side, a cover glass 11 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 side of the cover glass 11, and the touch panel control IC unit 22 is disposed in the ring. The upper part of the structural 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. Further, a polarizing film 31 is provided on the surface of the image display panel 32. Again, as shown in Figure 18. The touch panel laminated in the order of the touch sensor module 10a, the touch panel control unit 10b, and the image display device 30 is bonded by an ultraviolet curable adhesive 24 (UV Resin). 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 pattern and the first ITO electrode 13 are disposed in the electrode pattern unit at the position close to the finger, and the electrode pattern unit disposed at the position close to the finger in the finger and the second ITO electrode 15 Between, forming electrostatic capacitance (capacitor), respectively flowing Current. 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 sensor module 10a can detect the contact cover glass 11 The position of the finger in the X-Y2 dimension.

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

Here, between the PET film 14 of the touch 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 a PET film If there is an air layer interposed 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, 14 Due to the difference in refractive index between the surfaces of the respective surfaces and the air layer, 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 and the PET film 14 and the glass substrate 16 in comparison with air, thereby suppressing the touch panel display. Reduced brightness and reduced contrast.

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 to overlap the two workpieces, and the OCR is hardened by heating and ultraviolet (UV) irradiation to join the two workpieces. Here, because OCR is generally In terms of 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, and an object of the present invention is to provide a good reworkability and to prevent color development even when used for a long period of time, which is relatively short in processing time and relatively inexpensive even if the joint surface is large. The member of the area can also be easily bonded to the workpiece, and a touch panel using such a bonding method to suppress a decrease in brightness and a decrease in contrast can be 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 that when a surface of a member made of a siloxane (hereinafter referred to as a decyl oxyalkylene sheet) is irradiated with ultraviolet rays in the atmosphere, the surface is oxidized to become a hydrophilic surface, and the glass substrate or the resin base is overlapped on the surface. The plate is pressed or heated for a predetermined period of time between the overlapping glass substrate or the resin substrate and the ultraviolet oxyalkylene oxide plate, 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 the bonding material used as each substrate of the touch panel display is used, the image of the touch panel does not have the effect of discoloration.

Further, since the decane is a relatively soft material, the surface of the hard coating layer 14a on the side of the first ITO electrode 13 of the PET film 14 or the glass is used. In the case where the surface of the surface of the first wiring layer 21 side of the substrate 16 has a stepped structure, it is possible to easily suppress the bubbles from entering the 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 helium oxide has higher heat resistance temperature than OCR, it can shorten the UV light source and the oxyalkylene plate when the surface of the siloxane substrate is treated compared with the distance between the ultraviolet (UV) light source and the OCR bonding surface during OCR curing. The distance of the surface, the UV intensity at the surface of the siloxane substrate is greater than the UV intensity of the OCR interface. 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, the time required for the heating process and the pressurization of the bonded substrate of the siloxane substrate such as the UV irradiation process of the siloxane chain and the glass substrate is shorter than the time required for the UV hardening reaction of the OCR. .

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, the bonding of the glass substrate or the resin substrate to the oxyalkylene group irradiated with the ultraviolet ray is not performed, and the bonding of the two substrates is performed as described above. Heat to complete the joint. Therefore, the two substrates can be easily separated shortly after the overlap. Therefore, for example, a glass substrate or a resin substrate and irradiation When the alignment of the ultraviolet oxyalkylene plate is not sufficient, if it is shortly after the overlap, the two can be peeled off, and the siloxane chain is irradiated with ultraviolet rays again to perform the bonding process. 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, and is provided in the present invention. The first ITO electrode 13 provided on the surface of the hard coat layer 14a of the PET film 14 and the oxyalkylene plate 17a in which a decane coupling agent is introduced between the cover sheet and the cover glass 11 are provided. Further, a hard coat layer 14a of the PET film 14 and a second ITO electrode 15 provided on the surface of the glass substrate 16 are provided with a nonoxyalkylene plate 17b to which a decane coupling agent is introduced.

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 general alkoxyalkyl plate was irradiated with ultraviolet rays (UV), the surface became a hydrophilic surface, and the hydrophilic surface of the alkoxyalkyl plate was overlapped, and the first ITO electrode 13 was provided on the surface. The PET 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 plate of the hydrophilic surface and the (first surface) 13 of the PET film 14 of the (hydrophobic surface) are known. The surface of the hard coating layer 14a on the side opposite to the surface on which the first ITO electrode 13 of the PET film 14 is provided and the surface on which the second ITO electrode 15 is provided on the glass substrate 16 are difficult to bond.

The inventors have sincerely reviewed and found that a nonoxyalkylene plate introduced with a decane coupling agent is used instead of a general oxyalkylene plate, and the surface of the sulfoxyalkylene plate introduced into the decane coupling agent is irradiated with UV to make the surface a suitable surface for bonding. And superimposing the surface of the PET film 14 suitable for bonding, the surface of the first ITO electrode 13 on the hydrophobic surface, 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, or The surface of the glass substrate 16 is provided with the surface of the second ITO electrode 15, whereby the nonoxyalkylene plate into which the decane coupling agent is introduced can be bonded to the surfaces.

Further, it has been found that the surface of the cover glass 11 which overlaps the hydrophilic surface is bonded to the surface of the sulfoxyalkylene group which is suitable for the introduction of the decane coupling agent, and the fluorinated alkyl siloxane plate is overlapped by UV. The surface which is hydrophilized by irradiation is the same as that of the surface of the cover glass 11, and the oxyalkylene plate and the cover glass 11 which are introduced with the decane coupling agent can be joined.

Here, the oxyalkylene plate into which the decane coupling agent is introduced means a sulfoxyalkylene plate formed by introducing a decane coupling agent into an uncured fluorene oxide resin and then hardening it. As the decane coupling agent, for example, an epoxy-based, acrylic-based or methacrylic-based decane coupling agent can be used to obtain a bonded oxyalkylene plate suitable for the present invention.

By surface modification of the oxirane plates 17a, 17b into which the decane coupling agent is introduced, the surface modified surface can also be bonded to the PET film 14 The surface of the first ITO electrode 13 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 surface on which the second ITO electrode 15 is provided on the surface of the glass substrate 16 are provided. Engage. Although it is not always clear about the mechanism, the following mechanisms can be considered. Hereinafter, the mechanism of thinking will be described with reference to FIGS. 3 and 4.

As an example, the surface of the oxirane plate 17a to which the decane coupling agent was introduced by ultraviolet (UV) irradiation was examined, and the surface and the surface of the PET film 14 on which the first ITO electrode 13 was placed were joined. Further, the nonoxyalkylene plate 17a to which the decane coupling agent of Fig. 3(a) is introduced is bonded to the cover glass 11 by the method shown in Fig. 2 in advance.

Fig. 3(a) shows the state of the decane coupling agent present on the surface of the oxirane plate 17a to which the decane coupling agent is introduced.

The decane coupling agent is a functional group having two kinds of different reactivity in one molecule. In the oxirane plate into which the decane coupling agent is introduced, a part of the decane coupling agent is exposed on the surface of the aforementioned oxyalkylene plate.

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.

As shown in Fig. 3 (b), in the atmosphere containing moisture (H ₂ O) or carbon dioxide (CO ₂ ), the surface of the oxirane plate 17a to which the decane coupling agent is introduced is irradiated with ultraviolet rays from an excimer lamp or the like ( UV) ultraviolet light (UV) emitted by the light source 40. A part of the decane coupling agent exposed to the surface of the oxirane plate 17a to which the decane coupling agent was introduced was modified by UV irradiation.

Specifically, (a) a part of the decomposition reaction of the functional group X of the decane coupling agent exposed on the surface of the oxyalkylene group plate 17a, and a chemical reaction of moisture and carbon dioxide in the air by UV irradiation, the carboxyl group (-COOH) ) is formed on a part of the surface of the oxyalkylene group plate 17a, and (b) the functional group RO and X of the decane coupling agent are decomposed and desorbed, and oxygen generated as a result of chemical reaction with moisture and carbon dioxide in the air by ultraviolet irradiation The radical generates a reaction to form a hydroxyl group (-OH) in a part of the surface of the alkoxyalkyl group 17a. Further, (c) the undecomposed functional groups RO and X also remain on the surface.

In summary, the surface of the oxirane plate 17a to which the decane coupling agent is introduced is mixed with (a) a portion bonded to a carboxyl group (the OH group at the end), and (b) an oxidation reaction due to an oxygen radical. A portion of the OH group bond, and then (c) the functional group RO, X is not decomposed and the remaining portion is removed.

That is, by irradiating ultraviolet ray (UV) to the surface of the oxirane plate 17a to which the decane coupling agent is introduced, a part of the functional group is decomposed and desorbed in a part of the decane coupling agent exposed on the surface. The functional group of this part is decomposed and the part which is detached becomes an OH group at the end of any of the conditions, and a part of the surface of the oxirane plate 17a to which the decane coupling agent is introduced becomes a hydrophilic surface. Further, the functional group RO remaining as described above has a property of being chemically bonded to an inorganic material.

Then, as shown in Figure 4(c), by ultraviolet light In the (UV) irradiation treatment, the decane coupling agent in a state in which a hydrophilic portion is mixed with a portion in which a functional group RO group which chemically reacts with the inorganic substance is present in a part of the region is introduced into the surface of the oxyalkylene group plate 17a, and the pair is overlapped. By the irradiation of UV, a portion of the portion of the originally hydrophobic portion is modified to a surface of the PET film 14 of the terminal OH group, and the surface of the first ITO electrode 13 is provided, whereby the hydrophilic portion of the surface of the alkoxyalkyl group 17a is Hydrogen bonding is formed between the hydrophilic portions of the surface of the PET film 14 on which the first ITO electrode 13 is provided. On the other hand, a chemical bond is formed between a portion where the functional group RO remaining on the surface of the oxyalkylene group plate 17a remains and a hydrophobic portion of the surface of the PET film 14 on which the first ITO electrode 13 is provided. Here, the surface of the PET film 14 on which the first ITO electrode 13 is placed is superposed by superposition of the surface of the first ITO electrode 13 on which the decane coupling agent is introduced, and the dehydration of the joint surface is caused. Finally, the decane coupling agent is introduced into the decane. The substrate 17a and the surface of the PET film 14 on which the first ITO electrode 13 is provided are bonded by oxygen, and the functional group RO remaining on the surface of the oxyalkylene oxide plate 17a and the surface of the PET film 14 on which the first ITO electrode 13 is provided. Chemical bonding between the hydrophobic moieties to join.

Further, in FIGS. 3 and 4, the surface of the oxyalkylene group plate 17a to which the decane coupling agent is introduced and the surface of the PET film 14 on which the first ITO electrode 13 is provided have been examined. However, instead of the setting of the PET film 14, The surface of the ITO electrode 13 may be bonded to the surface of the hard coating layer 14a on the opposite side to the surface on which the first ITO electrode 13 is provided, or the surface of the glass substrate 16 on which the second ITO electrode 15 is provided.

As described above, in the present invention, the above problems are solved as described below.

(1) irradiating ultraviolet rays onto a workpiece surface having a hydrophobic surface and a member made of a decane coupling agent introduced with a decane coupling agent; and irradiating the surface of the workpiece with ultraviolet rays and irradiating the member formed of the above-mentioned oxirane The surface of the ultraviolet ray is laminated in a manner of being pressed; the contact surface of the workpiece laminated with the arson gas is pressurized, or the laminated workpiece and the member formed by argon Heating, or heating the stacked workpiece and the member made of siloxane to be pressurized while the contact surface is pressurized, thereby bonding the workpiece having the hydrophobic surface and introducing the decane coupling agent a member made of a siloxane.

(2) irradiating ultraviolet rays on one surface of the first workpiece having the hydrophilic surface, one surface of the second workpiece having the hydrophobic surface, and the surface of the member formed of the decane coupling agent introduced by the decane coupling agent; The first workpiece and the member made of the argon oxide are laminated to the second workpiece so as to be in contact with the surface irradiated with the ultraviolet ray; the contact surface is pressurized so as to pressurize the first contact layer; The second workpiece is heated by a member made of a siloxane, or the first and second workpieces and the member made of siloxane are heated while being pressurized by the contact surface. Thereby, the sulfoxyalkylene group introduced into the decane coupling agent is interposed between the first workpiece having the hydrophilic surface and the second workpiece having the hydrophobic surface.

(3) irradiating ultraviolet rays on one surface of a first workpiece having a hydrophobic surface, one surface of a second workpiece having a hydrophobic surface, and both surfaces of a member obtained by introducing a decane coupling agent from a decane coupling agent; The first work mentioned above And the member formed of the oxime and the second workpiece are laminated so as to be in contact with the surface irradiated with the ultraviolet ray; the contact surface is pressurized so as to pressurize or laminate the first and the first (2) the workpiece is heated by a member made of a siloxane, or the first and second workpieces laminated with the cesium alkane are heated while being pressurized by the contact surface. Thus, the sulfoxyalkylene group introduced into the decane coupling agent is interposed between the first workpiece having a hydrophobic surface and the second workpiece having a hydrophobic surface.

(4) In the touch panel having the touch sensor module and the image display device having the substrate on which the transparent conductive film is provided, the touch sensor module is set to be modified by ultraviolet irradiation. a substrate made of a transparent conductive film and a member obtained by introducing a decane coupling agent and modified by ultraviolet irradiation on both surfaces; and the substrate and the member made of the siloxane are irradiated with the ultraviolet rays. Facing the stratification of the past.

(5) As the decane coupling agent of the above (1) to (4), an epoxy-based, acrylic-based or methacrylic-based decane coupling agent is used.

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

(1) Ultraviolet irradiation of the surface of the workpiece and the member made of siloxane by irradiating ultraviolet rays with a member made of a hydrophobic surface and a member made of a decane coupling agent. The surface is a surface suitable for bonding, and the member having the hydrophobic surface and the member derived from the decane coupling agent into which the decane coupling agent is introduced can be surely joined.

Therefore, a resin such as PET having a hydrophobic surface, a workpiece provided with a transparent conductive film, or the like, and a member made of a decane coupling agent into which a decane coupling agent is introduced can be bonded.

(2) Irradiating ultraviolet rays on one surface of a workpiece having a hydrophilic surface, irradiating ultraviolet rays on one side of a workpiece having a hydrophobic surface, and irradiating ultraviolet rays on both sides of a member made of a decane coupling agent introduced with a decane coupling agent Emitting a workpiece having a hydrophilic surface, a workpiece having a hydrophobic surface, a member made of a decane coupling agent by ultraviolet rays, or a workpiece having a hydrophobic surface. One surface is irradiated with ultraviolet rays, and both surfaces of a member made of a decane coupling agent are irradiated with ultraviolet rays, and a workpiece having a hydrophobic surface and a member derived from a decane coupling agent having a decane coupling agent are provided. The ultraviolet ray irradiation of the workpiece on the hydrophobic surface is laminated in such a manner as to be laminated, and 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 the difficulty in achieving uniformity of coating, the deformation during hardening, and the like in the case where the OCR is used for bonding, and Since the heat resistance temperature of the oxyalkylene is higher than the OCR, the ultraviolet ray irradiation source can be brought close to the irradiation surface of the oxirane, and the light irradiation surface of the oxirane can be efficiently modified.

(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.

(3) As a decane coupling agent introduced into a member made of a siloxane, a bonding agent suitable for a workpiece having a hydrophobic surface can be obtained by using an epoxy-based, acrylic- or methacrylic decane coupling agent. a member made of oxane.

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‧‧‧Oxysiloxane (PDMS) substrate

17a, 17b‧‧‧Phosphate (PDMS) substrate with decane coupling agent

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 joining of the surface of the PET film on which the ITO electrode is provided and the oxyalkylene plate into which the decane coupling agent is introduced.

Fig. 4 is a view (2) illustrating the joining of the surface of the PET film on which the ITO electrode is provided and the oxyalkylene plate to which the decane coupling agent is introduced.

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 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. Figure (2) of Cheng (B-2).

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 for explaining a bonding process (B-3) 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. 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. The present invention is also applicable to a touch panel. The production of the above 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 covered by the cover glass 11, the oxyalkylene group 17a, the first ITO electrode 13, the PET film 14, the oxyalkylene group 17b, the second ITO electrode 15, and the glass substrate. The order of 16 is used for stratification. 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.

Black 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 first ITO electrode 13 is disposed on the PET film 14 Matrix 12.

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 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 .

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 side of the cover glass 11, and the touch panel control IC unit 22 is disposed in the ring. The upper part of the structural 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.

The following is for manufacturing the aforementioned touch sensor module. The bonding work of each workpiece will be described.

[Engineering A-1] The joining process 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 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) on the surface of the hard coat layer 14a.

(a) bonding of the cover glass 11 to the oxirane plate 17a to which the decane coupling agent is introduced

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 introduction are performed. The bonding of the oxirane plate 17a of the decane coupling agent.

As shown in Fig. 5 (a), the surface of the oxirane plate 17a to which the decane coupling agent is introduced 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 irradiated. The exposed region of the decane coupling agent is modified to a state in which a hydrophilic region having an OH group at the end and a remaining region of the functional group RO are mixed. Further, the region where the decane coupling agent on the surface of the oxyalkylene group plate 17a is not exposed is oxidized to be changed into a hydrophilic region. Hereinafter, the surface of such a modified sulfoxyalkylene plate is referred to as "the surface of a suitable oxyalkylene plate."

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 is overlapped with the UV irradiation surface of the oxyalkylene group 17a to which the decane coupling agent is introduced. The bonding strength is increased by appropriately pressurizing and heating the cover glass 11 and the oxyalkylene group 17a to which the decane coupling agent is introduced.

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 introduction of decane can be more surely performed. Bonding of the oxirane plate 17a of the coupling agent.

Further, the surface of the oxyalkylene group plate 17a to which the decane coupling agent is introduced may be simultaneously irradiated with the UV irradiation of the bonding surface of the cover glass 11.

(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), the surface of the oxyalkylene group plate 17a to which the decane coupling agent is introduced is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp, and the argon coupling agent is introduced. The UV-irradiated surface of the alkyl plate 17a becomes a surface of a sulfoxyalkylene plate suitable for bonding.

On the other hand, in the PET film 14 in which the first ITO electrode 13 is provided on the surface of the hard coating layer 14a, the surface of the pattern on which the first ITO electrode 13 is provided is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp. , the PET film 14 is provided with the first ITO electrode 13 A part of the surface of the pattern is modified into a region where the OH group is not terminated. Hereinafter, such a modified surface will be referred to as "a surface of a transparent conductive film suitable for bonding".

Thereafter, the surface of the ITO electrode 13 on which the UV-irradiation treatment is performed on the surface of the oxirane plate 17a to which the decane coupling agent is introduced, and the surface of the ITO electrode 13 are subjected to UV irradiation treatment, and the above-mentioned oxyalkylene is appropriately overlapped. The substrate 17a and the PET film 14 are pressurized and heated, and the oxyalkylene group plate 17a (with the cover glass 11) to which the decane coupling agent is introduced and the PET film 14 having the first ITO electrode 13 on the surface thereof are joined.

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

(1) A nonoxyalkylene plate 17a to which a decane coupling agent is introduced is bonded 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 a surface of a sulfoxyalkylene plate suitable for bonding, and the surface is laminated on the cover glass 11 to bond the first workpiece having a hydrophilic surface. The cover glass 11 and the oxyalkylene group plate 17a to which a decane coupling agent is introduced are used. Further, as described above, the joint surface of the cover glass 11 may be irradiated with ultraviolet rays.

(2) The surface of the oxirane sheet 17a to which the decane coupling agent is bonded to the cover glass 11 having the first surface of the hydrophilic surface, and the surface of the PET film 14 having the second workpiece having the hydrophobic surface is provided first. The surface of the transparent conductive film (ITO electrode 13) is irradiated with ultraviolet rays, and the ultraviolet ray-irradiated surface of the oxyalkylene group plate 17a is modified to a surface of a sulfoxyalkylene group suitable for bonding, and the ultraviolet ray-irradiated surface of the PET film 14 is suitable for bonding. Transparent conductive film surface.

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

(4) overlapping the PET film 14 having the second workpiece having the hydrophobic surface, the oxyalkylene group 17a introduced with the decane coupling agent, and the cover glass 11 having the first workpiece having the hydrophilic surface The contact faces of the respective workpieces are heated while being pressurized.

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-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 by introducing a decane-based coupling agent of a decane coupling agent, and the first workpiece corresponding to the hydrophobic surface is bonded. The PET film 14 of the cover glass 11 corresponds to the glass substrate 16 on the surface of which the second transparent conductive film (ITO electrode 15) is provided on the second workpiece having the hydrophobic surface.

(a) bonding of the oxirane plate 17b to which the decane coupling agent is introduced and the PET film 14 (which has been bonded to the cover glass 11)

As shown in Fig. 6 (a), the surface of the oxirane plate 17b to which the decane coupling agent is introduced is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp, and the ultraviolet ray of the amphoxy group 17b is irradiated. The surface becomes a suitable surface for the bonding of the oxyalkylene sheets.

Next, the surface of the hard coating layer 14a on which the pattern of the first ITO electrode 13 is provided is passed through the peroxyalkylene group 17a to which the decane coupling agent is introduced to bond the PET film 14 of the cover glass 11, as shown in Fig. 6(a). The surface of the hard coating layer 14a on the opposite side to the surface of the pattern of the first ITO electrode 13 is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp, and a part of the surface of the hard coating layer 14a is modified into an end. An area that is an OH group. Hereinafter, such a modified surface will be referred to as "a surface of a hard coating layer suitable for bonding".

Thereafter, the UV-irradiated surface of the oxyalkylene group plate 17b to which the decane coupling agent is introduced and the surface of the PET film 14 subjected to the UV irradiation treatment are superimposed, and the PET film 14 and the oxyalkylene group plate 17b are appropriately pressurized and heated. The oxirane plate 17b to which the decane coupling agent was introduced and the PET film 14 on the surface of which the first ITO electrode 13 was provided were joined.

(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 nonoxyalkylene group plate 17b to which the decane coupling agent has been bonded to the PET film 14 and the surface of the PET film 14 opposite to the bonding surface of the PET film 14 is irradiated with ultraviolet rays (UV) from an excimer lamp or the like. The UV light emitted by the light source 40 causes the surface to be a surface suitable for bonding the oxyalkylene sheet.

Next, for example, the surface of the glass substrate 16 of the second ITO electrode 15 having the pattern shown in FIG. 18(c) is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp, and the glass substrate 16 is irradiated. A part of the surface on which the pattern of the second ITO electrode 15 is provided is modified into a region having an OH group at its end. Hereinafter, the surface to be modified is the same as the surface of the PET film 14 on which the surface of the first ITO electrode 13 is provided with UV irradiation, and is referred to as a surface of a transparent conductive film suitable for bonding.

Thereafter, the UV-irradiated surface of the oxirane plate 17b to which the decane coupling agent is introduced and the UV-irradiated surface of the glass substrate 16 are superimposed, and the glass substrate 16 and the oxyalkylene group 17b introduced with the decane coupling agent are appropriately pressurized and heated. The aroxyalkylene oxide plate 17b bonded to the PET film 14 and the glass substrate 16 on the surface of which the second ITO electrode 15 is provided are bonded.

In addition, a resin substrate (for example, a PET film 14) having a second ITO electrode 15 on its surface may be used instead of the glass substrate 16 on which the second ITO electrode 15 is provided. However, the order of the process 2 does not change.

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

(1) In the PET film 14 on the surface of the oxirane plate 17b to which the decane coupling agent is introduced, and the first workpiece having the hydrophobic surface and the cover glass 11, the cover film is not bonded to the PET film 14 The surface of the hard coating layer 14a of 11 is irradiated with ultraviolet rays, and the ultraviolet ray-irradiated surface of the oxyalkylene group plate 17b is modified to a surface of a sulfoxyalkylene oxide plate suitable for bonding, and the ultraviolet ray of the PET film 14 bonded to the cover glass 11 is irradiated. It becomes a hard coating layer suitable for joining.

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

(3) The step of pressurizing the workpiece while superimposing the workpiece on the PET film 14 (the cover glass 11 to which the first workpiece having the hydrophobic surface) is introduced by the introduction of the decane coupling agent of the decane coupling agent heating.

(4) A glass of a second workpiece having a hydrophobic surface, which is bonded to a PET film 14 (joined cover glass 11) having a first surface having a hydrophobic surface, and a surface of a sulfonyl coupling plate 17b to which a decane coupling agent is introduced The surface of the substrate 16 is provided with a surface of the second transparent conductive film (ITO electrode 15), and ultraviolet rays are irradiated to modify the ultraviolet ray-irradiated surface of the oxyalkylene group plate 17b to a surface of a siloxane-based alkyl plate suitable for bonding, and the glass substrate 16 is immersed. The ultraviolet ray irradiation surface becomes a surface of a transparent conductive film suitable for bonding.

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

(6) A PET film 14 (with the cover glass 11) having the first workpiece having a hydrophobic surface, a siloxane chain 17b to which a decane coupling agent is introduced, and a glass substrate having a second surface having a hydrophobic surface In the order of 16, the contact faces of the respective workpieces are overlapped and heated while being pressurized.

Further, in (3) and (6) of the present bonding method, only pressurization or heating may be employed, but it is preferable to perform heating 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 to constitute a touch panel. Here, the configuration example of the touch panel control unit 10b and the order of the touch sensor module 10a, the touch panel control unit 10b, and the image display device 30 are used. The bonding of the line laminated touch panels is the same as in the prior art, 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 attached, a decane (substrate) introduced with a decane coupling agent is used instead of the previous OCA tape or OCR, and the decane coupling agent is introduced. The (substrate) and the joint surface of each structural element are irradiated with ultraviolet rays.

Then, in the substrate on which the conductive film (for example, the ITO electrode) is provided in the touch sensor module, the surface on which the conductive film is provided is irradiated with ultraviolet rays.

Further, when the surface on which the conductive film is not provided on the substrate on which the conductive film is provided is a hydrophobic surface, the surface is also irradiated with ultraviolet rays.

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 a joint due to the hardening reaction of OCR, the coating process of the joint surface of the OCR-specific joint can be avoided. Difficulties in uniformity, deformation during hardening, etc. 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 lower than that of the OCA tape and the OCR.

Further, in the case of bonding using a nonoxyalkylene plate in which a decane coupling agent is introduced, the bonding of the glass substrate or the resin substrate to the oxyalkylene group of the decane coupling agent which is irradiated with ultraviolet rays is not performed, and the bonding is completed immediately. The two substrates are pressed and heated for a predetermined period of time to complete the bonding. Therefore, the two substrates can be easily separated shortly after the overlap. Therefore, for example, when the alignment of the glass substrate or the resin substrate with the oxyalkylene group introduced into the decane coupling agent which is irradiated with ultraviolet rays is not sufficient, if it is shortly after the overlap, the two may be peeled off first, and the oxyalkylene plate may be peeled off again. The bonding process is performed by irradiating ultraviolet rays. 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. Surface bonding, and conductivity of the oxyalkylene sheet and the surface being hydrophobic For the bonding of the film substrate, the sulfoxyalkylene plate may be surface-modified by ultraviolet irradiation (using a surface layer suitable for bonding) by using a fluorenyl group plate introduced with a decane coupling agent, and irradiated with ultraviolet rays. The surface of the conductive film or the hydrophobic surface of the substrate is surface-modified (to make it a surface state suitable for bonding), so that the above-described bonding can be performed.

That is, when the constituent elements of the touch sensor module are attached, a decane (substrate) introduced with a decane coupling agent is used instead of the previous OCA tape or OCR, and the decane is introduced into the decane coupling agent. The bonding surface of the (substrate) and each of the structural elements is irradiated with ultraviolet rays, and the touch sensor module can be configured by bonding the respective constituent 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 cover glass 11 is first joined with the oxirane plate 17a to which the decane coupling agent is introduced, and then the argon-oxygenane introduced into the decane coupling agent which is bonded to the cover glass 11 is joined. In the order of the substrate 17a and the PET film 14, the cover glass 11 and the PET film 14 on the surface of which the first transparent conductive film (ITO electrode 13) is provided are bonded.

Further, in [Engineering B-1], the PET film 14 joined to the cover glass 11 and the introduction thereof are joined by first passing through the oxyalkylene group plate 17a which is a decane coupling agent which is formed by [Engineering A-1]. The oxirane plate 17b of the decane coupling agent is then bonded to the PET film 14 which has joined the cover glass 11 In the order of joining the oxirane coupling plate 17b of the decane coupling agent and the glass substrate 16, the sulfonyl group 17b to which the decane coupling agent is introduced and the glass substrate 16 on the surface of which the second ITO electrode 15 is provided are bonded to the PET film 14 to form a glass substrate 16 having a second ITO electrode 15 on the surface thereof. 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 oxime group plate 17a to which the decane coupling agent is introduced and the PET film 14 are first joined, and then the oxirane plate 17a to which the decane coupling agent has been bonded to the PET film 14 is joined. The PET film 14 in which the cover glass 11 and the first transparent conductive film (ITO electrode) are provided on the surface may be bonded to the cover glass 11 in this order. (The following is called [Engineering A-2]).

Similarly, in the above [Engineering B-1], the oxyalkylene group plate 17b to which the decane coupling agent is introduced is first joined to the glass substrate 16, and then the oxyalkylene group plate into which the decane coupling agent has been bonded to the glass substrate 16 is bonded. 17b and the PET film 14 to which the cover glass 11 has been bonded, the PET film 14 joined to the cover glass 11 and the oxyalkylene plate 17b of the bonded ruthenium coupling agent of the bonded glass substrate 16 are bonded to form a touch sensing. The module can also be used. (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 plate in which a decane coupling agent is introduced is interposed between a first workpiece having a hydrophilic surface and a second workpiece having a hydrophobic surface, and is bonded to a hydrophilic surface. The first workpiece is the cover glass 11, and the second workpiece having the hydrophobic surface is the PET film 14 in which the first transparent conductive film (ITO electrode 13) is provided on the surface of the hard coating layer 14a.

(a) bonding of the oxirane plate 17a to the PET film 14 by introducing a decane coupling agent

Next, the surface of the oxirane plate 17a to which the decane coupling agent is introduced is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp, and the surface of the oxirane plate 17a to which the decane coupling agent is introduced is suitable for bonding. The surface of the oxirane plate. As described above, the term "suitable for bonding the surface of the oxyalkylene plate" means that the region where the decane coupling agent on the surface of the siloxane substrate is exposed is modified into a hydrophilic region having an OH group at the end and a residual region of the functional group RO are mixed. In the state, the region where the decane coupling agent on the surface of the oxyalkylene plate is not exposed is oxidized to the surface of the oxirane plate of the hydrophilic region.

Further, in the PET film 14 of the first ITO electrode 13 having the pattern shown in FIG. 18(b) on the surface of the hard coat layer 14a, as shown in FIG. 8(a), a hard coat layer provided with the pattern of the first ITO electrode 13 is provided. The surface of 14a is irradiated with an ultraviolet (UV) light source 40 such as an excimer lamp. The surface of the hard coating layer 14a on which the first ITO electrode 13 is provided in the PET film 14 is made of UV light to be a surface of a transparent conductive film suitable for bonding. As described above, the surface of the transparent conductive film suitable for bonding means that a portion of the hydrophobic surface (the surface of the hard coating layer 14a) on which the transparent conductive film (the first ITO electrode 13 pattern) is provided is modified into an OH-based region. s surface.

Thereafter, the UV-irradiated surface of the oxirane plate 17a to which the decane coupling agent is introduced and the surface of the PET film 14 subjected to the UV irradiation treatment are superposed, and the oxyalkylene group plate 17a and the PET film 14 are appropriately pressurized and heated. The oxirane plate 17a to which the decane coupling agent was introduced and the PET film 14 on the surface of which the first ITO electrode 13 was provided were joined.

(b) bonding of the oxirane plate 17a to the cover glass 11 to which the decane coupling agent has been bonded to the PET film 14

Next, as shown in FIG. 8(b), ultraviolet rays (UV) from an excimer lamp or the like are irradiated to the surface on the opposite side of the bonding surface of the PET film 14 of the oxyalkylene group plate 17a to which the decane coupling agent of the PET film 14 is introduced. The UV light emitted from the light source 40 causes the UV-irradiated surface of the oxyalkylene group plate 17a to which the decane coupling agent is introduced to be a surface suitable for bonding the siloxane substrate.

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 of the decane coupling agent which has been bonded to the PET film 14 and the cover glass 11 is overlapped, and the cover glass 11 and the above-mentioned helium oxygen are appropriately overlapped. The alkyl plate 17a is pressurized and heated to increase the 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 introduction of decane can be more surely performed. Bonding of the oxirane plate 17a of the coupling agent.

Further, the surface of the oxyalkylene group plate 17a to which the decane coupling agent of the PET film 14 is bonded may be simultaneously irradiated with the UV irradiation of the bonding surface of the cover glass 11.

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

(1) The first transparent conductive film (ITO electrode 13) of the PET film 14 having the second workpiece having a hydrophobic surface is irradiated with ultraviolet rays to the surface of the nonoxyalkylene plate 17a to which the decane coupling agent is introduced, and the alkoxyalkyl group 17a is applied. The ultraviolet ray-irradiated surface is modified to a surface of a suitable siloxane substrate, and the ultraviolet ray-irradiated surface of the PET film 14 is made to be a surface of a transparent conductive film suitable for bonding.

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

(3) The PET film 14 having the second workpiece having the hydrophobic surface and the tantalum oxyalkylene sheet 17a to which the decane coupling agent is introduced are heated while being pressurized while being in contact with the contact surface of the workpiece.

(4) Next, the surface of the oxyalkylene group plate 17a to which the decane coupling agent of the PET film 14 having the second surface having the hydrophobic surface is bonded is irradiated with ultraviolet rays to make the ultraviolet ray-irradiated surface into a suitable oxyalkylene plate. surface. Further, the bonding surface of the cover glass 11 of the first workpiece having the hydrophilic surface is also irradiated with ultraviolet rays.

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

(6) overlapping the PET film 14 having the second workpiece having the hydrophobic surface, the oxyalkylene group 17a into which the decane coupling agent is introduced, and the cover glass 11 having the first workpiece having the hydrophilic surface The contact faces of the respective workpieces are heated while being pressurized.

Further, in (3) and (6) of the present bonding method, only pressurization or heating may be employed, but it is preferable to perform heating 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) is provided.

(a) bonding of the oxirane plate 17b to the glass substrate 16 by introducing a decane coupling agent

As shown in Fig. 9 (a), the surface of the oxirane plate 17b to which the decane coupling agent is introduced is irradiated with an ultraviolet (UV) light source 40 such as an excimer lamp. The UV light is applied to make the surface of the above-mentioned alkoxyalkyl group 17b a suitable surface for the bonding of the oxyalkylene group.

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 surface on which the pattern of the second ITO electrode 15 is provided is irradiated with an ultraviolet (UV) light source 40 such as an excimer lamp. The UV light is such that the surface of the glass substrate 16 on which the pattern of the second ITO electrode 15 is provided becomes a surface of a transparent conductive film suitable for bonding. As described above, the surface of the transparent conductive film which is suitable for bonding is a surface of a surface of the glass substrate 16 on which the transparent conductive film (the second ITO electrode 15 pattern) is provided, and is modified into a region having an OH group at the end. .

Thereafter, the surface of the UV-irradiated surface of the oxyalkylene group plate 17b to which the decane coupling agent is introduced and the 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. The oxyalkylene group plate 17b to which the decane coupling agent was introduced and the glass substrate 16 on which the second ITO electrode 15 was provided were joined.

As shown in Fig. 10 (b), the surface of the nonoxyalkylene group plate 17b to which the decane coupling agent has been bonded to the glass substrate 16 and the surface opposite to the bonding surface of the glass substrate 16 is irradiated with ultraviolet rays (UV) from an excimer lamp or the like. The UV light emitted from the light source 40 causes the UV-irradiated surface of the above-described oxyalkylene group plate 17b to be a surface suitable for bonding the oxyalkylene plate.

Next, the PET film 14 of the cover glass 11 is bonded to the surface of the pattern of the first ITO electrode 13 through the oxyalkylene group plate 17a, as shown in FIG. 10(b), on the opposite side to the surface on which the pattern of the first ITO electrode 13 is provided. The surface of the hard coating layer 14a is irradiated with ultraviolet rays from an excimer lamp or the like. The UV light emitted from the (UV) light source 40 is such that the surface of the hard coating layer 14a that irradiates the UV light is a surface of the hard coating layer suitable for bonding. As described above, the surface of the hard coating layer suitable for bonding means that a part of the surface of the hard coating layer 14a is modified to a surface having a region where the terminal is an OH group.

Thereafter, the UV-irradiated surface of the oxyalkylene group plate 17b to which the decane coupling agent is introduced and the surface of the PET film 14 subjected to the UV irradiation treatment are superimposed, and the PET film 14 and the oxyalkylene group plate 17b are appropriately pressurized and heated. The glass substrate 16 is bonded to the oxyalkylene group 17b to which the decane coupling agent is introduced, and the PET film 14 on the surface of which the first ITO electrode 13 is provided.

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

(1) The surface of the nonoxyalkylene sheet 17b to which the decane coupling agent is introduced is irradiated with ultraviolet rays on the surface of the glass substrate 16 having the second workpiece having the hydrophobic surface, and the surface of the second transparent conductive film (ITO electrode 15) is irradiated with ultraviolet rays. The ultraviolet ray-irradiated surface of the oxyalkylene sheet 17b is modified to a surface of a sulfoxyalkylene oxide plate suitable for bonding, and the ultraviolet ray-irradiated surface of the glass substrate 16 is made to be a surface of a transparent conductive film suitable for bonding.

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

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

(4) The glass substrate 16 of the second workpiece having a hydrophobic surface The surface of the hard coat layer 17b on the surface of the oxirane plate 17b to which the decane coupling agent is introduced, and the surface of the PET substrate on which the first workpiece having the hydrophobic surface is provided on the opposite side to the surface of the first transparent conductive film 13 (ITO electrode) The ultraviolet ray irradiation surface of the oxyalkylene group plate 17b is modified to a surface of a sulfoxyalkylene group plate suitable for bonding, and the ultraviolet ray irradiation surface of the PET film 14 is made to be a surface of a hard coating layer suitable for bonding.

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

(6) A PET film 14 (with the cover glass 11) having the first workpiece having a hydrophobic surface, a siloxane chain 17b to which a decane coupling agent is introduced, and a glass substrate having a second surface having a hydrophobic surface In the order of 16, the contact faces of the respective workpieces are overlapped and heated while being pressurized.

Further, in (3) and (6) of the present bonding method, only pressurization or heating may be employed, but it is preferable to perform heating 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 into which the decane coupling agent is introduced may be bonded first. (The following is called [Engineering A-3]).

Similarly, in the aforementioned [Engineering B-1] [Engineering B-2], the first joint has been The PET film 14 to which the cover glass 11 is bonded and the oxyalkylene group plate 17b and the glass substrate 16 to which the decane coupling agent is introduced may be used (hereinafter, such a process is referred to as [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 project discloses a method in which a sulfoxyalkylene plate in which a decane coupling agent is introduced is interposed between a first workpiece having a hydrophilic surface and a second workpiece having a hydrophobic surface, and is bonded to a hydrophilic surface. The first workpiece is the cover glass 11, and the second workpiece having the hydrophobic surface is the PET film 14 in which the first transparent conductive film (ITO electrode 13) is provided on the surface of the hard coating layer 14a.

As shown in Fig. 11, the both sides of the oxyalkylene group plate 17a to which the decane coupling agent is introduced are irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp, and the oxirane plate 17a introduced into the decane coupling agent is introduced. Both sides become the surface of the oxirane plate suitable for bonding.

Further, 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 first ITO electrode 13 is irradiated with an excimer lamp. The ultraviolet light emitted from the ultraviolet (UV) light source 40 or the like causes the surface on which the pattern of the first ITO electrode 13 is provided to be a surface of the transparent conductive film suitable for bonding.

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 is superimposed on one side of the UV irradiation treatment of the oxyalkylene group 17a to which the decane coupling agent is introduced, and the UV-ray treatment of the above-described oxyalkylene group 17a is performed. The other side is the 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 decane which introduces the decane coupling agent are first bonded. The PET film 14 of the first ITO electrode 13 is provided on the substrate 17a and the surface.

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 introduction of decane can be more surely performed. Bonding of the oxirane plate 17a of the coupling agent.

Further, UV irradiation of the bonding surface of the cover glass 11, the both surfaces of the above-described 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) The first transparent surface of the bonding surface of the cover glass 11 of the first workpiece having the hydrophilic surface, the both surfaces of the oxyalkylene group plate 17a to which the decane coupling agent is introduced, and the second film of the second workpiece having the hydrophobic surface Conductive The film (ITO electrode 13) is irradiated with ultraviolet rays, and the ultraviolet ray-irradiated surface of the oxyalkylene group plate 17a is modified to a surface of a sulfoxyalkylene group plate suitable for bonding, and the ultraviolet ray-irradiated surface of the PET film 14 is made into a surface of a transparent conductive film suitable for bonding. . The ultraviolet irradiation surface of the cover glass is activated, and the impurities are decomposed and removed.

(2) Thereafter, the bonding surface of the UV-irradiation treatment of the cover glass 11 is superimposed on one side of the UV irradiation treatment of the oxyalkylene group 17a to which the decane coupling agent is introduced, and the alumoxyalkyl group 17a is carried out. The other side of the UV irradiation treatment and the surface of the PET film 14 subjected to UV irradiation treatment.

(3) Then, the contact faces of the respective workpieces laminated in the order of the cover glass 11 and the oxyalkylene plate 17a and the PET film 14 into which the decane coupling agent is introduced 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 by introducing a decane-based coupling agent of a decane coupling agent, and the first workpiece corresponding to the hydrophobic surface is bonded. The PET film 14 of the cover glass 11 corresponds to the second workpiece having a hydrophobic surface, and the second transparent conductive film is provided on the surface. The glass substrate 16 of the (ITO electrode 15).

As shown in Fig. 12, the both surfaces of the nonoxyalkylene plate 17b to which the decane coupling agent is introduced are irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp, so that the surface of the above-described oxyalkylene group plate 17b is suitable for bonding. The surface of the oxirane plate.

Further, as shown in Fig. 12, the surface of the hard coating layer 14a on the opposite side to the surface on which the cover glass 11 is bonded is bonded to the PET film 14 of the cover glass 11 by the introduction of the decyl oxyalkylene plate 17a of the decane coupling agent. The UV light emitted from the ultraviolet (UV) light source 40 such as an excimer lamp is irradiated, and the surface of the hard coating layer 14a irradiated with the UV light is made to be a surface of the hard coating layer suitable for bonding.

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 surface on which the pattern of the second ITO electrode 15 is provided is irradiated with ultraviolet rays from an excimer lamp or the like. The UV light emitted from the (UV) light source 40 causes the surface of the glass substrate 16 on which the pattern of the second ITO electrode 15 is provided to be a surface of a transparent conductive film suitable for bonding.

Thereafter, the surface of the UV-irradiated treatment of the PET film 14 is superposed on one side of the UV irradiation treatment of the sulfoxyalkylene group 17b to which the decane coupling agent is introduced, and the UV-irradiation treatment of the above-mentioned oxyalkylene group 17b is performed. The surface of one side and the surface of the glass substrate 16 subjected to UV irradiation treatment.

Then, the stratification is performed in the order of the PET film 14 to which the cover glass 11 has been bonded, the above-described oxyalkylene group plate 17b, and the glass substrate 16. The pressure and heating are appropriately applied, and the PET film 14 to which the cover glass 11 has been bonded and the oxyalkylene group 17b to which the decane coupling agent is introduced and the glass substrate 16 on the surface of which the second ITO electrode 15 is provided are bonded.

Further, as shown in Fig. 12, the PET film 14 of the cover glass 11 is bonded to the silicone film 14 of the cover glass 11 by the introduction of the decane coupling agent of the decane coupling agent, and the hard coating layer 14a on the opposite side to the surface of the cover glass 11 is bonded. The surface of the surface of the oxyalkylene group 17b and the surface of the glass substrate 16 on which the second ITO electrode 15 is provided on the surface of the ITO electrode 15 may be simultaneously irradiated with UV irradiation.

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

(1) For the first workpiece having a hydrophobic surface, and the surface of the hard coating layer 14a on the opposite side to the surface of the bonded cover glass 11 to which the PET film 14 of the cover glass 11 is bonded, and the oxyalkylene plate into which the decane coupling agent is introduced A second transparent conductive film (ITO electrode 15) is provided on the surface of the glass substrate 16 having the second workpiece having the hydrophobic surface on both sides of the 17b, and the ultraviolet ray is irradiated to the hard surface of the PET film 14 to form a hard coating suitable for bonding. On the surface of the cloth layer, the ultraviolet ray-irradiated surface of the oxyalkylene group plate 17b is modified to a surface of a sulfoxyalkylene group plate suitable for bonding, and the ultraviolet ray-irradiated surface of the glass substrate 16 is made to be a surface of a transparent conductive film suitable for bonding.

(2) Thereafter, the surface of the UV-irradiated treatment of the overlapped PET film 14 and the surface of the UV-oxygen treatment of the oxyalkylene group 17b to which the decane coupling agent is introduced are subjected to UV irradiation, and the amphoxy group 17b is subjected to UV irradiation. The other side of the treatment and the glass substrate 16 are subjected to UV irradiation. The bottom coat is coated.

(3) Then, the contact surface of each of the workpieces laminated in the order of the PET film 14 to which the cover glass 11 has been joined, the oxyalkylene group plate 17b to which the decane coupling agent is introduced, and the glass substrate 16 are heated while being pressurized. The workpieces are joined first.

Further, in (3) 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, The substrate of the ITO electrode 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, In the substrate of the conductive film, the use of the glass substrate has been increasing. In recent years, the glass substrate has been used for any of the first and second 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 to which the decane coupling agent is introduced.

In FIG. 13(a), the touch sensor module 10a is covered with a cover glass 11, a decyl oxyalkylene plate 17a into which a decane coupling agent is introduced, a first glass substrate 16a, a first ITO electrode 13, and a decane couple. The mixture of the oxyalkylene group plate 17b, the second ITO electrode 15, and the second glass substrate 16b is 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 is in contact with the oxyalkylene group plate 17b to which the decane coupling agent is introduced.

In FIG. 13(b), the touch sensor module 10a is covered with a cover glass 11, a decyl oxyalkylene plate 17a into which a decane coupling agent is introduced, a first ITO electrode 13, a first glass substrate 16a, and a decane couple. The mixture of the oxyalkylene group plate 17b, the second ITO electrode 15, and the second glass substrate 16b is laminated in this order. The other structures are the same as in Fig. 13(a).

Furthermore, in the configuration example of the touch panel shown in FIG. 13, each substrate, The thickness of 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 this project, the cover glass 11 is joined to the first glass substrate 16a on the surface of which the first transparent conductive film (ITO electrode) 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 oxirane plate 17a to which the decane coupling agent is introduced

As shown in Fig. 14 (a), the surface of the oxyalkylene group plate 17a to which the decane coupling agent is introduced is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp to make the surface of the oxyalkylene group plate 17a suitable for bonding. The surface of the oxyalkylene plate.

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 is overlapped with the UV irradiation surface of the oxyalkylene group 17a to which the decane coupling agent is introduced. The bonding strength is increased by appropriately pressurizing and heating the cover glass 11 and the above-described oxyalkylene group 17a which are overlapped and laminated.

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 introduction of decane can be more surely performed. Bonding of the oxirane plate 17a of the coupling agent. Further, UV irradiation of the joint surface of the surface of the oxyalkylene group plate 17a and the cover glass 11 may be performed simultaneously.

(b) bonding of the oxirane plate 17a of the decane coupling agent to the cover glass 11 and the first glass substrate 16a

Then, as shown in Fig. 14 (b), the surface on the opposite side of the bonding surface of the cover glass 11 of the oxyalkylene group plate 17a to which the decane coupling agent having been introduced is bonded to the cover glass 11 is irradiated with ultraviolet rays from an excimer lamp or the like ( The UV light emitted from the light source 40 causes the UV-irradiated surface of the above-described oxyalkylene group plate 17a to be a surface of a suitable oxyalkylene plate.

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 is overlapped with the UV-irradiated surface of the oxyalkylene group 17a to which the decane coupling agent has been bonded to the cover glass 11. The bonding strength is increased by appropriately pressurizing and heating the cover glass 11 and the oxyalkylene group 17a to which the decane coupling agent is introduced.

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 oxirane plate 17a to which the decane coupling agent is introduced.

Further, UV irradiation of the joint surface of the surface of the oxyalkylene group plate 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 project discloses a method of bonding a first workpiece having a hydrophobic surface and a second workpiece having a hydrophobic surface by a nonoxyalkylene plate in which a decane coupling agent is introduced, which corresponds to a first workpiece having a hydrophobic surface. The first glass substrate 16a on which the first ITO electrode 13 is provided on the other surface, and the second transparent conductive film (ITO electrode 15) on the surface of the second workpiece having the hydrophobic surface is bonded to the cover glass 11 The second glass substrate 16b.

(a) Joining of the first glass substrate 16a (with the cover glass 11 joined) and the oxyalkylene plate 17b to which the decane coupling agent is introduced

As shown in Figure 15 (a), a nonoxyalkylene plate for introducing a decane coupling agent The surface of 17b is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp, and the surface of the above-described alkoxyalkyl group 17b is made to be a surface of a suitable sulfoxyalkylene plate.

Next, as shown in FIG. 15(a), in the first glass substrate 16a in which the first ITO electrode 13 is bonded to the cover glass 11 and the first ITO electrode 13 is provided on the other surface, the first ITO electrode 13 is provided. The surface of the pattern is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp, and the surface of the first glass substrate 16a on which the pattern of the first ITO electrode 13 is provided is a surface of a transparent conductive film suitable for bonding.

Thereafter, the UV-irradiated surface of the oxyalkylene group plate 17b to which the decane coupling agent is introduced and the 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 plate 17b are appropriately pressurized. And heating, the first glass substrate 16a in which the first ITO electrode 13 is provided on the other surface is joined by bonding the oxyalkylene group plate 17b to which the decane coupling agent is introduced to the surface of the cover glass 11 and the other surface.

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

Next, as shown in Fig. 15 (b), the surface of the nonoxyalkylene group plate 17b to which the decane coupling agent has been introduced, which is bonded to the first glass substrate 16a, is irradiated with an excimer from the surface opposite to the bonding surface of the first glass substrate 16a. The UV light emitted from the ultraviolet (UV) light source 40 such as a lamp causes the UV-irradiated surface of the oxyalkylene group plate 17b to be a surface of a suitable sulfoxyalkylene plate.

On the other hand, for example, the surface is set as shown in Figure 18(c) In the second glass substrate 16b of the second ITO electrode 15 of the present invention, the surface of the second ITO electrode 15 is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp, and the second glass substrate 16b is irradiated. The surface on which the pattern of the second ITO electrode 15 is provided becomes a surface of a transparent conductive film suitable for bonding.

Thereafter, the UV irradiation surface of the oxyalkylene group plate 17b to which the decane coupling agent has been bonded to the first glass substrate 16a and the surface of the second glass substrate 16b subjected to the UV irradiation treatment are overlapped, and the second glass substrate 16b is appropriately The oxyalkylene group plate 17b to which the first glass substrate 16a is bonded is pressed and heated to bond the oxyalkylene group plate 17b to which the decane coupling agent has been bonded to the first glass substrate 16a and the second glass to which the second ITO electrode 15 is provided. Substrate 16b.

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

(1) The surface of the first ITO electrode 13 on the surface of the oxirane plate 17b to which the decane coupling agent is introduced and the first glass substrate 16a (the bonded cover glass 11) having the first surface having the hydrophobic surface is irradiated with ultraviolet rays. The ultraviolet ray-irradiated surface of the above-described oxyalkylene group plate 17b is modified to a surface of a sulfoxyalkylene group plate suitable for bonding, and the ultraviolet ray-irradiated surface of the first glass substrate 16a is made to be a surface of a transparent conductive film suitable for bonding.

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

(3) overlapping 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 introduced) by the oxirane coupling plate 17b to which the decane coupling agent is introduced Contact side Heated while pressurized.

(4) The surface of the oxyalkylene group plate 17b to which the decane coupling agent is introduced to the first glass substrate 16a (the bonded cover glass 11) having the first workpiece having the hydrophobic surface, and the second surface having the hydrophobic surface The surface of the second transparent conductive film (ITO electrode 15) is provided on the surface of the second glass substrate 16b of the workpiece, and the ultraviolet ray is irradiated to the surface of the oxyalkylene group plate to be bonded to the surface of the siloxane substrate. The ultraviolet ray irradiation surface of the second glass substrate 16b is a surface of a transparent conductive film suitable for bonding.

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

(6) The first glass substrate 16a (with the cover glass 11) having the first workpiece having the hydrophobic surface, the oxyalkylene group 17b to which the decane coupling agent is introduced, and the second workpiece having the hydrophobic surface The order of the second glass substrate 16b is superimposed while superimposing the contact faces of the respective workpieces.

Further, in (3) and (6) of the present bonding method, only pressurization or heating may be employed, but it is preferable to perform heating while pressurizing.

Next, a bonding method of the present invention to which the touch panel of the structural example shown in Fig. 13(b) is applied will be described with reference to Figs. 16 and 17 .

[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 reveals the introduction of decane A method of bonding a first workpiece having a hydrophilic surface to a second workpiece having a hydrophobic surface, and a cover glass 11 corresponding to the first workpiece having a hydrophilic surface, which is equivalent to having a hydrophobic The second workpiece on the surface is the first glass substrate 16a on the surface of which the first transparent conductive film (ITO electrode 13) is provided.

(a) bonding of the cover glass 11 to the oxirane plate 17a to which the decane coupling agent is introduced

Before joining the lower surface of the cover glass 11 of the first workpiece and the surface of the first ITO electrode 13 side of the first glass substrate 16a of the second workpiece, first, the cover glass 11 and the oxyalkylene plate into which the decane coupling agent is introduced are performed. Engagement of 17a.

As shown in Fig. 16 (a), the surface of the oxyalkylene group plate 17a to which the decane coupling agent is introduced is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp, so that the surface of the oxyalkylene group plate 17a is suitable for bonding. The surface of the oxyalkylene plate.

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 is overlapped with the UV irradiation surface of the oxyalkylene group 17a to which the decane coupling agent is introduced. The bonding strength is increased by appropriately pressurizing and heating the cover glass 11 and the above-described oxyalkylene group 17a which are overlapped and laminated.

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 to which the decane coupling agent is introduced can be surely performed. Further, the surface of the sulfoxyalkylene plate into which the decane coupling agent is introduced may be simultaneously irradiated with the UV irradiation of the bonding surface of the cover glass 11.

(b) bonding of the oxirane plate 17a of the decane coupling agent to the cover glass 11 and 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, the surface on which the pattern of the first ITO electrode 13 is provided is irradiated. The UV light emitted from the ultraviolet (UV) light source 40 such as a molecular lamp causes the UV irradiation surface of the first glass substrate 16a to be a surface of the transparent conductive film suitable for bonding.

On the other hand, the ultraviolet ray (UV) light source 40 from an excimer lamp or the like is irradiated to the surface of the oxyalkylene group plate 17a to which the decane coupling agent has been bonded to the cover glass 11 and the surface opposite to the bonding surface of the cover glass 11 is irradiated. The UV light emitted is such that the UV-irradiated surface of the above-described oxyalkylene group plate 17a becomes a surface of a sulfoxyalkylene plate suitable for bonding.

Thereafter, the surface on which the UV-irradiation treatment is performed on the surface of the first glass substrate 16a which is subjected to the UV irradiation treatment of the oxyalkylene group plate 17a to which the decane coupling agent is introduced is overlapped, and the cover glass 11 and the above-mentioned helium oxygen are appropriately overlapped. The alkyl plate 17a is pressurized and heated to bond the oxirane plate 17a and the surface of the decane coupling agent to which the cover glass 11 has been joined. The first glass substrate 16a of the first ITO electrode 13 is placed.

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

(1) A nonoxyalkylene plate 17a to which a decane coupling agent is introduced is bonded 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 a surface of a phthalocyanide plate suitable for bonding, and the surface is laminated on the cover glass 11, and the cover glass 11 and the first workpiece are joined. The oxirane plate 17a of the decane coupling agent. Further, as described above, the joint surface of the cover glass 11 may be irradiated with ultraviolet rays.

(2) The surface of the siloxane chain 17a to which the decane coupling agent of the first workpiece having the hydrophilic surface is bonded, and the first glass substrate 16a of the second workpiece having the hydrophobic surface The surface of the transparent conductive film (ITO electrode 13) is irradiated with ultraviolet rays, and the ultraviolet ray-irradiated surface of the oxyalkylene group plate 17a is modified to a surface of a sulfoxyalkylene group plate suitable for bonding, and the ultraviolet ray irradiation surface of the first glass substrate 16a is made. A transparent conductive film surface suitable for bonding.

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

(4) overlapping the respective workpieces in the order of the cover glass 11 having the first workpiece having the hydrophilic surface, the oxyalkylene group 17a introducing the decane coupling agent, and the first glass substrate 16a of the second workpiece The contact surface is heated while being pressurized.

Further, in (4) of the present bonding method, only pressurization or heating 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 by a sulfoxyalkylene plate introduced with a decane coupling agent, and the first workpiece having a hydrophilic surface is The first glass substrate 16a to which the cover glass 11 is bonded to the surface on which the first ITO electrode 13 is provided corresponds to the second glass having the second surface of the hydrophobic surface, and the second transparent conductive film (ITO electrode) is provided on the surface. Substrate 16b.

(a) Joining of the first glass substrate 16a (with the cover glass 11 joined) and the oxyalkylene plate 17b to which the decane coupling agent is introduced

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 surface of the second ITO electrode 15 side, first, bonding of the first glass substrate 16a (with the cover glass 11 joined) to the oxyalkylene plate 17b to which the decane coupling agent is introduced is performed.

As shown in Fig. 17 (a), the surface of the oxyalkylene group plate 17b to which the decane coupling agent is introduced is irradiated with UV light emitted from an ultraviolet (UV) light source 40 such as an excimer lamp, and the UV irradiation surface of the oxyalkylene group plate 17b is irradiated. It becomes a surface suitable for the bonding of the oxyalkylene plate.

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 oxirane plate 17b to which the decane coupling agent is introduced and the UV-irradiated surface of the first glass substrate 16a are appropriately pressurized, and the contact faces of the first glass substrate 16a and the oxyalkylene group 17b are appropriately pressurized. And heating, the first glass substrate 16a which joins the cover glass 11 to the one side of the oxyalkylene group board 17b which introduces a decane coupling agent is joined.

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

Next, as shown in Fig. 17 (b), the surface of the nonoxyalkylene group plate 17b to which the decane coupling agent has been bonded to the first glass substrate 16a and the surface of the first glass substrate 16a opposite to the bonding surface are irradiated with excimer The UV light emitted from the ultraviolet (UV) light source 40 such as a lamp causes the UV-irradiated surface of the oxyalkylene group plate 17b to be a surface of a suitable sulfoxyalkylene plate.

On the other hand, for example, the second glass substrate 16b of the second ITO electrode 15 having the pattern shown in Fig. 18(c) is irradiated with ultraviolet rays (UV) such as an excimer lamp from the surface on which the pattern of the second ITO electrode 15 is provided. The UV light emitted from the light source 40 causes the surface of the second glass substrate 16b on which the pattern of the second ITO electrode 15 is provided to be a surface of a transparent conductive film suitable for bonding.

Thereafter, the UV irradiation surface of the oxyalkylene group plate 17b to which the decane coupling agent has been bonded to the first glass substrate 16a and the surface of the second glass substrate 16b subjected to the UV irradiation treatment are overlapped, and the second glass substrate 16b is appropriately The oxyalkylene group plate 17b to which the first glass substrate 16a has been bonded is pressed and heated to bond the oxyalkylene group plate 17b to which the decane coupling agent has been bonded to the first glass substrate 16a, and the second ITO electrode 15 on the surface. 2 glass substrate 16b.

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

(1) For the first workpiece having the hydrophilic surface, the first glass substrate 16a of the cover glass 11 is bonded to the surface of the first ITO electrode 13 by the oxyalkylene group 17a to which the decane coupling agent is introduced. The first glass substrate 16a on which the first workpiece having the hydrophilic surface is laminated on the surface of the oxyalkylene group 17b to which the decane coupling agent is introduced is irradiated with ultraviolet rays, and the ultraviolet irradiation surface of the two workpieces is in close contact with each other. The oxyalkylene group 17b is bonded to the first glass substrate 16a having the first workpiece having a hydrophilic surface and the oxyalkylene group 17b to which the decane coupling agent is introduced.

(2) The surface of the oxyalkylene group plate 17b to which the decane coupling agent is introduced to the first glass substrate 16a (the bonded cover glass 11) having the first workpiece having the hydrophilic surface, and the second surface having the hydrophobic surface The surface of the second transparent conductive film (ITO electrode 15) is provided on the surface of the second glass substrate 16b of the workpiece, and the ultraviolet ray is irradiated to the surface of the oxyalkylene group plate to be bonded to the surface of the siloxane substrate. The ultraviolet irradiation surface of the second glass substrate 16b is a transparent conductive film sheet suitable for bonding surface.

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

(4) The first glass substrate 16a (with the cover glass 11) having the first workpiece having the hydrophilic surface, the oxyalkylene group 17b to which the decane coupling agent is introduced, and the second workpiece having the hydrophobic surface The order of the second glass substrate 16b is superimposed while superimposing the contact faces of the respective workpieces.

Further, in (4) of the present bonding method, only pressurization or heating 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 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 decane (substrate) into which a decane coupling agent is introduced is used instead of the previous OCA tape or OCR, and the decane is introduced. I The bonding surface of the mixture of the decane (substrate) and each of the structural elements (for example, a substrate on which a conductive thin film such as an ITO electrode is provided) is irradiated with ultraviolet rays. 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.

[Experimental example]

As described above, in the bonding method of the present invention, the oxyalkylene group having the decane coupling agent having a surface suitable for bonding by ultraviolet irradiation is interposed in the second step of providing the conductive film on the first workpiece and the bonding surface. The first workpiece and the second workpiece are stacked on the joint surface of the workpiece, and the first workpiece and the second workpiece are laminated and heated to be applied to 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. When the alkyl plate is bonded to the conductive film substrate when the surface is hydrophobic, the ultraviolet ray-irradiated surface of the oxyalkylene plate may be made to be suitable for bonding by irradiating ultraviolet rays to the oxyalkylene plate into which the decane coupling agent is introduced. In the surface state of the alkyl plate, the surface of the conductive film substrate is irradiated with ultraviolet rays, and the ultraviolet ray irradiation surface of the conductive film substrate is in a surface state of the conductive film suitable for bonding, whereby the above-described bonding can be performed.

Hereinafter, an experimental example of a state in which a nonoxyalkylene plate in which a decane coupling agent is introduced and a conductive thin film substrate on which a conductive film is provided will be disclosed.

(I) Preparation of a nonoxyalkylene plate into which a decane coupling agent is introduced

First, a nonoxyalkylene plate into which a decane coupling agent is introduced is prepared. As described above, the sulfoxyalkylene group introduced into the decane coupling agent is formed by introducing a decane coupling agent into an uncured fluorene oxide resin and then hardening it.

As the uncured rhodium oxide resin, the following two resins were used.

(A-1) One-liquid type decane resin X-32-3095 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(A-2) Two-component rhodium oxide resin SIM260 (manufactured by Shin-Etsu Chemical Co., Ltd.)

Here, the one-liquid type decane resin is only one which hardens the main agent by a hardening reaction such as thermal hardening. On the other hand, the two-component rhodium oxide resin is formed of a main component and a curing agent, and after mixing the two liquids, it is cured by a curing reaction such as thermal curing.

Further, as the decane coupling agent, the following three types were used.

(B-1) Isocyanate-based decane coupling agent KBE-9007 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(B-1) epoxy decane coupling agent KBE-403 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(B-3) Aminoisocyanate-based decane coupling agent KBM-903 (manufactured by Shin-Etsu Chemical Co., Ltd.)

In addition, the structural formula of each decane coupling agent is described below.

(I-1) Formation of a nonoxyalkylene plate using a one-liquid type decane resin (X-32-3095) and a decane coupling agent

The formation of a decyloxy group using a one-liquid type decane resin and a decane coupling agent was carried out in the following order.

First, after introducing the decane coupling agent in an uncured X-32-3095 solution to a concentration of 2% by weight, stirring was carried out for about 10 minutes.

Next, the mixed solution was transferred to a glass dish and allowed to stand at room temperature for 1 hour. This project is a defoaming of bubbles generated during agitation.

Next, the mixed solution after defoaming was heated at 80 degrees for 4 hours, and the curing was performed once.

Thereafter, heating was performed at 150 ° C for 0.5 hours, and hardening was performed twice. As shown later, the hardened oxyalkylene plate was not necessarily obtained by the decane coupling agent, but the obtained oxyalkylene plate was 50 mm in diameter and 3 mm in thickness.

(I-2) Formation of a nonoxyalkylene plate using a two-component rhodium oxide resin (SIM260) and a decane coupling agent

The formation of a decyloxy group using a two-liquid type decane resin and a decane coupling agent was carried out in the following order.

First, the SIM260 solution prepared from the main component and the curing agent was introduced into the decane coupling agent so as to have a concentration of 2% by weight based on the total amount of the SIM260 solution, followed by stirring for about 10 minutes.

Next, the mixed solution was transferred to a glass dish and allowed to stand at room temperature for 16 hours. The two-component rhodium oxide resin is first hardened by mixing a main agent and a hardener. That is, this project is a process of defoaming and primary hardening of bubbles generated during stirring.

Thereafter, heating was performed at 150 ° C for 0.5 hours, and hardening was performed twice. As shown later, the hardened oxyalkylene plate is not necessarily obtained by the decane coupling agent, but the obtained oxyalkylene plate has a shape of 50 mm in diameter and 1 mm in thickness.

Table 1 shows the results when the above-described alkylene oxide plate formation order was carried out using each of the decane resin and each decane coupling agent.

According to Table 1, it can be seen that when the isocyanate-based decane coupling agent KBE-9007 is used, even one of the liquid helium-oxygen resin X-32-3095 and the two-liquid oxime resin SIM260 is subjected to the above-mentioned procedure. The alkane resins are not hardened. Further, any of the uncured mixture of each of the decane and the decane coupling agent KBE-9007 was in a white turbid state. That is, for X-32-3095, SIM260, the decane coupling agent KBE-9007 is a substance which hinders hardening.

Further, when the epoxy-based decane coupling agent KBE-403 is used, even if the above-described procedure, the siloxane oxide of any one of the liquid helioxane resin X-32-3095 and the two-liquid oxime resin SIM260 is used. hardening. That is, a nonoxyalkylene plate into which a decane coupling agent is introduced is obtained. The oxirane plate obtained here is transparent and hardly absorbs light, and is suitable as a substance for bonding an intermediate medium of each structural element of the touch panel.

Further, when an amino-based decane coupling agent KBM-903 is used, the siloxane oxide of either one-liquid oxime resin X-32-3095 or two-liquid oxime resin SIM260 is passed through the above procedure. After hardening, a nonoxyalkylene plate into which a decane coupling agent is introduced can be obtained. However, although the bubbles generated during the stirring of the mixture of the decane resin and the decane coupling agent have been removed by the defoaming process, the primary hardening and the secondary hardening for the siloxane oxide resin X-32-3095 are carried out. As a result of the heating process, bubbles in the siloxane chain are produced. Further, as a result of performing a heating process for secondary hardening of the siloxane oxide resin SIM260, bubbles in the siloxane chain were produced.

That is, the oxirane plate obtained here has a bubble inside, so that When used as an intermediate medium for bonding the respective constituent elements of the touch panel, the visibility of the image is significantly deteriorated.

As described above, it is understood that the decane coupling agent to be introduced into the decane resin is preferably an epoxy group.

(II) Bonding experiment of a non-oxyalkylene plate with a decane coupling agent and a PET film with a conductive film on its surface

Next, a bonding experiment was carried out using two kinds of the above-described oxirane plates introduced into the decane coupling agent. That is, KBE-403 was used as a decane coupling agent, and two types of oxyalkylene plates formed of X-32-3095 and SIM260 were used as a decane resin.

(II-1) As a decane resin, the use of X-32-3095

The surface of the X-32-3095-based fluorinated alkyl plate to which the decane coupling agent KBE-403 was introduced and the surface of the PET film on which the conductive film was provided 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 X-oxygenated alkylene plate of the X-32-3095-based oxirane coupling agent KBE-403 and the VUV-irradiated surface of the PET film were brought into contact with each other to overlap the sulfoxyalkylene sheet and the PET film, and one side was bonded thereto. Apply a pressure of 0.25 MPa to both, while making the temperature of both Heated at 100 °C. The heating time is 30 seconds. By the above procedure, an X-32-3095-based oxirane plate and a PET film into which a decane coupling agent KBE-403 was introduced were bonded.

(II-1) As a decane resin, the use of SIM-260

The surface of the SIM-260-based fluorinated alkyl plate to which the decane coupling agent KBE-403 was introduced and the surface of the PET film on which the conductive film was provided were irradiated with ultraviolet rays.

As the ultraviolet light source, an excimer lamp which 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 sulfoxyalkylene sheet and the PET film are superposed on each other in such a manner that the SIM-260-based oxirane plate of the decane coupling agent KBE-403 and the VUV irradiation surface of the PET film are in contact with each other, and the two sides are opposite to each other. The pressure was applied at 0.25 MPa, and the temperature was set to 100 ° C. The heating time is 30 seconds. By the above procedure, a SIM-260-based oxirane plate and a PET film of the decane coupling agent KBE-403 were bonded.

In other words, it has been found that by this experiment, the surface of the conductive film of the conductive film of the conductive film substrate which cannot be joined by the surface modification treatment by ultraviolet irradiation can be performed. Similarly, it is also possible to bond a fluorinated alkyl plate to a conductive film substrate having a hydrophobic surface.

Further, in the above experimental examples, it has been revealed that a member made of a decane-based oxirane coupling agent can be used to obtain a member made of a siloxane which is suitable for the bonding of the present invention. It is confirmed that the epoxy-based decane coupling agent introduced into the member formed of siloxane may use an epoxy-based coupling agent other than the epoxy-based compound, even if the following (B-4) (B-5) decane coupling agent is used. The conditions of the decane coupling agent are the same, and a member made of a siloxane which is suitable for the bonding of the present invention can be obtained.

(B-4) Methacrylic decane coupling agent KBM-503 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(B-5) Acrylic decane coupling agent KBM-503 (manufactured by Shin-Etsu Chemical Co., Ltd.)

The structural formula of the aforementioned decane coupling agent will be described below.

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

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 (6)

A method for attaching 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 introduced into the member formed of the oxime; The workpiece and the member made of the above-mentioned oxirane are irradiated with ultraviolet rays; and the surface of the workpiece irradiated with ultraviolet rays is laminated in contact with the surface of the ultraviolet ray-forming member of the above-mentioned siloxane to form a lining; Pressing the contact surface with the member made of siloxane to be pressurized, or heating the laminated workpiece and the member made of siloxane, or stacking the workpiece with argon The member is heated while being pressurized while the contact surface is pressurized. 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: Introducing a decane coupling agent into the member formed of the oxime, and irradiating ultraviolet rays on one surface of the first workpiece, one surface of the second workpiece, and both surfaces of the member made of the oxime; The first workpiece and the member made of the argon oxide are laminated to the second workpiece so as to be in contact with the surface irradiated with the ultraviolet ray; and the contact surface is pressurized so as to pressurize or stratify 1 and the second workpiece is heated by a member made of a siloxane, or the laminated first and second workpieces and the member made of argon are pressurized while the contact surface is pressurized. heating. A method for attaching a workpiece, which is a member made of arson a method of bonding between a first workpiece having a hydrophobic surface and a second workpiece having a hydrophobic surface, wherein a decane coupling agent is introduced into the member made of the oxime; One surface of the first workpiece, one surface of the second workpiece, and both surfaces of the member made of the siloxane are irradiated with ultraviolet rays; and the first workpiece and the member made of the oxime and the second workpiece are irradiated with ultraviolet rays; Laminating in contact with the surface irradiated by the ultraviolet rays; pressurizing the contact surface to pressurize the workpiece, or heating the laminated workpiece, or pressurizing the laminated workpiece with the contact surface It is heated while being pressurized. The method for bonding a workpiece according to any one of the preceding claims, wherein the decane coupling agent is an epoxy-based, acrylic- or methacrylic-based decane coupling. mixture. 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 comprises ultraviolet radiation a modified substrate provided with a transparent conductive film, a member formed of a decane-coupled agent introduced into a decane coupling agent modified by ultraviolet irradiation; and a substrate formed of the above-mentioned substrate and a siloxane. Each of the aforementioned ultraviolet irradiation faces is stacked. The touch panel as recited in claim 5, wherein The decane coupling agent is an epoxy, acrylic or methacrylic decane coupling agent.