JP2012098973A - Glass composite and input device using the glass composite - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a glass composite member which has a flat plane region even when a decorative member is made thick, and an input device with a narrow frame structure which has both superior visibility and safety in a case of breakage using the glass composite member.SOLUTION: A glass composite 10 includes a translucent resin base material 20, a decorative member 21 stacked on one surface of the resin base material 20, a glass member 30 opposed to the resin base material 20, a frame body 40 opposed to the decorative member 21, and a translucent adhesion member 60 bonding one surface of the base resin material 20 and one surface of the glass member 30 together. The decorative member 21 is provided so as to form a frame-shaped decorative region 12 surrounding a window-shaped translucent region 11. The frame body 40 is loosely fitted to the glass member 30, and has one surface fixed to the decorative member 21 through the adhesion member 60, the other surface of the glass member 30 and the other surface of the frame body 40 forming flat surfaces in the same plane nearby the glass member 30.

Description

  The present invention relates to a glass composite having a glass member and a frame and an input device using the glass composite, and in particular, glass having a flat surface area between the glass member and the frame even if the decorative member is thickened. The present invention relates to a composite body and an input device having good visibility.

  Currently, portable electronic devices and the like are provided with an input device that is placed over a display device. The input device is mainly composed of a translucent base material so that the screen of the display device can be visually recognized, and an input operation is performed by touching the detection area with a finger while visually confirming the display content through it. Can do.

  Input operation detection methods are classified into several methods, such as a resistive film type and a capacitance type. In the capacitance type, a translucent X conductive layer extending in the X direction and a translucent Y conductive layer extending in the Y direction are opposed to each other in the detection region, and the X conductive layer and the Y conductive layer are alternately arranged. A potential is applied. When a person's finger having a substantially ground potential approaches, an electrostatic capacitance is formed between the X conductive layer and the Y conductive layer and the finger, and a voltage or current when a potential is applied to the X conductive layer or the Y conductive layer is increased. Change. By detecting this change, the position where the finger approaches is detected.

  Such a capacitance-type input device is integrally provided with a surface protection member in order to protect the sensor substrate. One surface of the surface protection member is an input operation surface, and a sensor substrate having a translucent X conductive layer and a Y conductive layer is bonded to the other surface by an adhesive layer. The surface protection member must be formed of a transparent member so that the screen area of the input device and the display device is a light-transmitting area. In addition, the decorative region is formed using an opaque decorative member so that the other region including the wiring portion of the sensor substrate is a non-light-transmitting region in plan view.

  However, the configuration of the decorative member in which an opaque frame such as a casing is provided on the outer surface around the input operation surface is not preferable because a step between the input operation surface and the frame occurs. Then, "decorative printing" which prints a decorating member on the translucent base-material inner surface has been performed as a formation method of a decorating member which does not project a frame on an outer surface. For example, Patent Document 1 discloses an input device in which decorative printing is performed on the inside of a light-transmitting substrate or a sheet-like film, and the other region including the wiring portion is a non-light-transmitting region. Such a decorative printing is easy as a manufacturing method, and since it can perform desired coloring, it is the most preferable decoration method in a monochrome decoration member. However, in recent years, in order to perform two or more types of coloring or to obtain a high-quality color such as white, a printing layer has been formed thickly, and a step having a large step due to the thickness has been used. It has come to be.

  Such an input device is arranged so as to be superimposed on the display device and constitutes an electro-optical device, and the operator views the screen display of the display device through the input device. Very important. When a glass substrate having excellent optical properties is used, the visibility is the best, and the glass substrate cost is not a problem as long as it is a flat glass shape obtained by cutting a flat plate. Therefore, it is optimal to use flat glass as a surface protection member in the light transmitting region of such an input device. However, the structure in which the glass is exposed on the surface of the apparatus has another problem that the glass pieces are scattered when broken.

  On the other hand, the input device is preferably integrated with the casing of the electronic device. For this reason, the glass composite body which formed the frame with the housing | casing material was devised. In Patent Document 2, in a glass insert molded article with a capacitance sensor in which a capacitance type sensor substrate is bonded to a flat glass integrated with a resin frame, an input region of the sensor substrate is bonded to an inner region of the resin frame. In order to match, a narrow frame structure in which the shape of the resin frame is an inclined surface is described.

JP 2005-173970 A JP 2009-154479 A

  However, integrally molding members with different linear expansion coefficients, such as glass and resin, has the restriction that resin materials and coloring materials cannot be freely selected. There were many mass production issues. Furthermore, as shown in FIGS. 7 and 8, the structure of Patent Document 2 uses a glass insert molded product 110 having a resin frame 140 as an inclined surface, and has an inclined surface only on two opposing sides in a rectangular screen. The narrow frame structure by can be provided. Since the sensor substrate 180 cannot be deformed corresponding to all the inclined surfaces of the four sides of the rectangle, any one of the two opposing sides is formed between the outer periphery of the sensor substrate 180 and the resin frame 140. It must be designed so that the plane distance is increased (FIG. 8). Therefore, the glass insert molded product 110 having a narrow frame structure on all four sides of the rectangle could not be formed. In addition, since it is bonded to the inclined surface, there is a concern that the reliability of the deformed sensor substrate 180 is lowered and the bonding strength of the adhesive layer 170 is deteriorated.

  Furthermore, in order to make the wiring part of the sensor board | substrate 180 invisible, the decorating area | region 12 which formed the decorating member 131, such as decorating printing, in the flat glass 130 was required. From the viewpoint of the operator, the opaque decorative member 131 is seen inward along the four sides of the transparent flat glass 130, and the translucent region 11 is slightly smaller than the boundary between the flat glass 130 and the resin frame 140. It has become.

  Further, when it is necessary to make the decorating member 131 thick, a step is produced between the decorating member 131 and the flat glass 130, and thus it cannot be applied to an input device having a thick printed layer. Furthermore, since the flat glass 130 is exposed on the outermost surface, there is a concern that glass pieces broken by a strong impact such as dropping may be scattered.

  Therefore, the present invention is to solve the above-mentioned problem as a surface protection member of an input device in a composite having glass as a member, and even if the decoration member is thickened, the glass member and the frame are flat. It is an object of the present invention to provide a glass composite having a surface region, and an input device having a narrow frame structure which is excellent in visibility using this and has safety at the time of breakage.

  The glass composite of the present invention includes a translucent resin base material, a decorative member laminated on one surface of the resin base material, a glass member facing the resin base material, and the decorative member. An opposing frame, and a translucent adhesive member that bonds one surface of the resin substrate and one surface of the glass member, and the decorative member has a window-shaped translucent region. It is provided so as to constitute a surrounding frame-shaped decoration region, the frame body is loosely fitted to the glass member, and one surface thereof is fixed to the decoration member via the adhesive member, The other surface of the glass member and the other surface of the frame body form a flat surface in the same plane in the vicinity of the glass member.

  According to this configuration, even if the decorating member laminated on one surface of the resin base material is thickened, the thickness of the glass member and the thickness of the flat surface region of the frame can be individually set accordingly. Therefore, application as a glass composite having a flat surface region between the other surface of the glass member and the other surface of the frame is possible. Furthermore, since the glass member excellent in visibility is used in the translucent region and one surface of the glass member is covered with the resin base material, it is possible to prevent the glass piece from being scattered even if it is broken.

  Therefore, according to the present invention, application as a glass composite having a flat surface region between a glass member and a frame is possible, and a glass composite having excellent visibility and safety at the time of breakage can be realized. .

  Further, it is desirable that the frame body is disposed so as to form a gap portion that is loosely fitted to the glass member, and the gap portion is filled with an adhesive resin. By so doing, even when the linear expansion coefficients of the glass member and the frame are different, the stress can be relieved by the adhesive resin.

  In addition, it is preferable that the other surface of the resin base material is flat at the boundary between the translucent area and the decoration area. Since it is flat and has no steps, it is suitable as an input operation surface as a surface member of the input device.

  Moreover, it is preferable that the peripheral part is chamfered on one surface of the said glass member. By so doing, the thickness of the adhesive member does not change steeply in the vicinity of the end face of the decorative member, so that the resin base material and the glass member can be better bonded. Accordingly, the quality of the glass composite obtained by bonding the resin base material and the glass member is stabilized.

  An input device according to the present invention includes a sensor substrate having an input portion and a wiring portion, a glass composite having a flat surface region of a glass member and a frame, and an adhesive for bonding the sensor substrate and the glass composite. The sensor substrate is fixed to the flat surface via the adhesive layer, and the input portion is positioned so as to overlap the light-transmitting region, and the wiring portion is It is located so that it may overlap with a decoration area | region planarly.

  If it carries out like this, when it sees from the input operation surface side, since the wiring part of a sensor board | substrate will overlap with a decorating area | region planarly, it will not be visually recognized. Further, since the sensor substrate is bonded to the flat surface region of the glass member and the frame, a narrow frame structure is possible. By combining the frame with the appearance of the housing, the input device can be integrated with the housing. Furthermore, since it has the favorable visibility of glass, since the outermost surface is made into the resin base material, it is possible to prevent a glass piece from scattering even if it breaks. Therefore, it is possible to realize an input device having a narrow frame structure that has excellent visibility and safety at the time of breakage.

  According to the present invention, even if the decorative member laminated on one surface of the resin base material is thickened, the thickness of the glass member and the thickness of the flat surface region of the frame can be individually set accordingly. Therefore, it can be applied as a glass composite having a flat surface region between the glass member and the frame, and a glass composite having excellent visibility and safety at the time of breakage can be realized.

  According to the present invention, the sensor substrate is bonded to the flat surface region of the glass member and the frame, and the glass has good visibility, and since the outermost surface is a resin base material, it has excellent visibility and is damaged. Therefore, it is possible to realize an input device having a narrow frame structure having both safety and safety.

It is a perspective view which shows the glass complex in the 1st Embodiment of this invention. It is the schematic cross section which cut | disconnected the glass complex of FIG. 1 by the II-II line. It is a schematic cross section which shows the input device in 1st Embodiment. It is a schematic plan view which shows the sensor board | substrate in 1st Embodiment. It is a schematic cross section which shows the glass complex in 2nd Embodiment. It is a partial expanded sectional view which shows the bubble defect in the conventional input device. It is a schematic cross section which shows the conventional glass insert molded article with a capacitance sensor. It is a schematic cross section of the other direction in the conventional glass insert molded article with a capacitance sensor.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, in order to make the drawing easy to see, the ratio of dimensions of each component is appropriately changed.

<First Embodiment>
FIG. 1 is a perspective view showing a glass composite 10 according to the first embodiment of the present invention, FIG. 2 is a schematic cross-sectional view taken along the line II-II in FIG. 1, and FIG. It is a schematic cross section of the input device 1 provided. The glass composite 10 shown in FIG.1 and FIG.2 is a base material which comprises the input device 1, and the sensor board | substrate 80 is fixedly provided like FIG. The input device 1 shown in FIG. 3 is mounted on various electronic devices such as a mobile device such as a mobile phone and a portable information terminal, a game device, a camera, and a video photographing device. These electronic devices have a display device 90, and information necessary for operation is displayed on a display screen. The input device 1 is installed in front of the display screen of the display device 90 so that the input operation can be detected and the display screen can be visually recognized. The display device 90 is a self-luminous type such as a liquid crystal display panel or an electroluminescence panel having an illumination device on the back.

  As shown in FIG. 1, the glass composite 10 in the present embodiment has a decoration region 12 that surrounds a window-like light-transmitting region 11. The outermost surface of the glass composite 10 is a translucent resin base material 20, and the window-like translucent region 11 can transmit light. The translucency in this specification means a state capable of transmitting light such as transparent or translucent, and means that the transmittance is 50% or more, preferably 80% or more.

  On the other hand, the frame 40 is formed by filling a mold with a thermoplastic resin. As shown in FIG. 1, openings 22 and 23 are provided in the resin base material 20 and the frame body 40. The opening 22 can be applied as a mouthpiece, the opening 23 as a mouthpiece, and the light-transmitting region 11 as a display portion. In this case, the microphone, the speaker, and the display electro-optical device are disposed on the back side of the glass composite 10.

  A glass composite 10 shown in FIG. 2 includes a glass member 30 manufactured in advance, a frame 40 manufactured in a different process, and a resin base material 20 on which a decorative member 21 is formed by decorative printing. Are integrated through an adhesive member 60. The frame body 40 is bonded to the side surface of the glass member 30 with an adhesive resin 50. The decorating member 21 is provided so as to constitute a frame-like decorating region 12 surrounding the window-like translucent region 11. The glass member 30 is disposed so that the window-like light-transmitting region 11 substantially matches in plan view.

  Further, by designing the thickness of the flat region of the frame body 40 to be thinner than the thickness of the glass member 30 according to the thickness of the decorative member 21, the surface of the glass member 30 opposite to the adhesive member 60. , The flat region of the frame body 40 and the glass member 30 are made to be a flat surface in the same plane to suppress the occurrence of a step in this region.

  As shown in FIG. 3, the input device 1 in the present embodiment has a light-transmitting sensor substrate 80 attached to the glass composite 10. One surface of the glass composite 10 is an input operation surface 10a, and a sensor substrate 80 made of a translucent base material 83 having a translucent upper electrode 84 and a lower electrode 86 on the other surface is an adhesive layer. 70. The adhesive layer 70 is, for example, a translucent acrylic resin adhesive tape, and absorbs and adheres to the respective steps of the bonding surfaces of the glass composite 10 and the sensor substrate 80. As the translucent substrate 83, a glass substrate having excellent optical characteristics is used. Each of the upper electrode 84 and the lower electrode 86 is a transparent conductive material such as ITO (Indium Tin Oxide), and is formed on the surface of the translucent substrate 83 by sputtering or vapor deposition.

  The input device 1 determines the operation coordinate position of the finger based on the capacitance change that occurs between the finger and the upper electrode 84 and the lower electrode 86 disposed inside the light-transmitting region 11 when the input operation surface 10a is operated with the finger. To detect.

  FIG. 4 is a schematic plan view for explaining the sensor substrate 80 in more detail. The sensor substrate 80 includes an input unit 81 that overlaps the input operation surface 10a in a plan view, and a wiring unit 82 for electrical connection. In FIG. 4, the upper electrode 84 and the lower electrode 86 disposed inside the input unit 81 are omitted, the upper wiring 85 is a solid line (one surface of the translucent substrate 83), and the lower wiring 87 is a dotted line (translucent base). The other surface of the material 83). The wiring part 82 of the sensor substrate 80 is disposed around the input part 81 in plan view. In the wiring part 82, the upper electrode 84 is connected to the upper wiring 85, and the lower electrode 86 is connected to the lower wiring 87, Further, an electrical connection portion 88 for connecting the upper wiring 85 and the lower wiring 87 and the flexible printed board is provided. Further, as shown in FIG. 3, in order to protect the lower electrode 86 and the lower wiring 87, it is preferable to attach a protective base material 89 through an adhesive layer 71.

  As shown in FIGS. 3 and 4, the wiring portion 82 of the sensor substrate 80 is bonded to the glass composite 10 so as to overlap with the decoration region 12 formed by the decoration member 21 in plan view. Therefore, the wiring part 82 of the sensor substrate 80 is not visually recognized by the operator on the input operation surface 10a side. Moreover, since the bonding region of the glass composite 10 is a flat surface, the sensor substrate 80 does not need to be deformed at all. Therefore, a glass substrate having excellent optical characteristics can be used for the translucent substrate 83 of the sensor substrate 80.

  In order to clarify the configuration and the effect in the present embodiment, a description will be given in comparison with a conventional example. FIG. 6 is a partially enlarged cross-sectional view showing a bubble defect in the conventional input device 101. When pasting together the translucent resin base material 120 on which the decorative member 121 is laminated and the flat plate (sensor substrate etc.) 125 as in Patent Document 1, if the decorative member 121 is thickened as it is, the decorative member 121 is thickened. Due to the step between the member 121 and the resin base material 120, the adhesive member 126 cannot follow the stepped portion of the decorative member 121, and the bubble 123 is generated, and the bubble 123 is visually recognized from the input operation surface 120 a side.

  7 and 8 are schematic cross-sectional views showing a conventional glass insert molded article with a capacitance sensor. As in the conventional patent document 2, in the glass insert molded product 110 in which the flat glass 130 is used for the light-transmitting region 11 that is the screen region and the resin frame 140 is provided around the flat glass 130, the step of the decorative member 131 is formed. In addition, a step in the resin frame 140 is generated. Therefore, the input device 100 having a narrow frame structure on four sides cannot be realized without deforming the sensor substrate 180 to be attached here. Therefore, it is impossible to use a glass substrate for the sensor substrate 180. Further, since insert molding is performed using different materials for the flat glass 130 and the resin frame 140, there is a problem that a large thermal stress is generated between materials having different linear expansion coefficients.

  Details of this embodiment that can solve these problems will be described below.

  In the glass composite 10 of the present embodiment, the surface 30 a of the glass member 30 is bonded and fixed to the back surface 20 b of the translucent resin base material 20, and the surface 40 a of the frame body 40 is bonded and fixed to the decorating member 21. Further, the thickness of the decorative member 21 is absorbed through the adhesive member 60 by a step between the surface 30a of the glass member 30 and the surface 40a of the frame body 40, and the surface of the translucent resin base material 20 is absorbed. 20a is formed on a flat surface, and a region where the sensor substrate 80 is bonded to the back surface 30b of the glass member 30 and the back surface 40b of the frame body 40 is formed on a substantially flat surface. In particular, even if the decorating member 21 laminated on the back surface 20b of the resin base material 20 is thickened, the thickness of the glass member 30 and the thickness of the flat surface region of the frame body 40 can be set individually in accordance with the thickness. Moreover, when absorbing the thickness of the decorating member 21, it is preferable that the surface 50a of the adhesive member 50 and the surface 40a of the frame 40 are substantially flush. In addition, it is preferable that the back surface 50 b of the adhesive resin 50 be flush with the back surface 40 b of the frame body 40 and the back surface 30 b of the glass member 30 in order to bond the sensor substrate 80 via the adhesive layer 70.

  The glass composite 10 and the input device 1 of this embodiment were manufactured by performing the following steps.

  The translucent resin base material 20 is a film base material obtained by hard-coating polyethylene terephthalate (PET) and has a thickness of about 125 μm. The decorating member 21 is decorated with a desired pattern, characters, marks, patterns, coloring, etc. by a printing method, and its thickness is about 15 μm so that the front and back surfaces are sufficiently shielded from light.

  The glass member 30 was a flat plate having a thickness of 0.7 mm and a rectangular design size of 40 mm × 60 mm cut out from a large-size glass plate and subjected to appropriate grinding treatment on the side surface. On the other hand, in the frame body 40, the mold size was designed so that the width of the gap portion loosely fitted with the glass member 30 was 0.6 mm, and a polycarbonate (PC) resin was molded. Next, in the process of integrating these members, the resin base material 20, the glass member 30, and the frame body 40 were fixed via the adhesive member 60 using a jig so that the planar positional relationship was constant. The adhesive member 60 was an acrylic resin adhesive tape having a thickness of 50 μm.

  The glass composite 10 manufactured in this manner was fixed to the sensor substrate 80 prepared in another process via the adhesive layer 70. The sensor substrate 80 uses a glass substrate having a thickness of 0.55 mm for the translucent substrate 83, and the adhesive layer 70 is made of an acrylic resin adhesive tape having a thickness of 25 μm. Note that the input portion 81 of the sensor substrate 80 is positioned so as to overlap the light transmitting region 11 of the glass composite 10 in a plane, and the wiring portion 82 of the sensor substrate 80 is planarly connected to the decoration region 12 of the glass composite 10. They are positioned so that they overlap.

  As a result, the sensor substrate 80 in which the input unit 81 overlaps the translucent region 11 in a plan view is bonded to the glass member 30 in a flat manner, the wiring portion 82 of the sensor substrate 80 is hidden by the decorative member 21, and the decorative region A narrow frame structure is possible in which the frame body 40 is configured so that 12 is kept to a minimum plane size. In this way, when viewed from the input operation surface 10a side, the wiring portion 82 of the sensor substrate 80 is not visually recognized, and the boundary between the glass member 30 and the frame 40 is not exposed. Moreover, since the sensor substrate 80 is bonded to the flat surface area of the back surface 30b of the glass member 30 and the back surface 40b of the frame body 40, there is no need to forcibly deform the sensor substrate 80.

  In the present embodiment, since the glass member 30 having excellent optical characteristics is used, the input device 1 having good visibility of the screen of the display device 90 can be obtained. By matching the frame 40 with the appearance of the housing, the input device 1 can be integrated with the housing of the electronic device. Furthermore, when the display device 90 and the input device 1 are integrated so as not to have an air layer, it is also important that no concentrated stress that deforms the display device 90 is generated even when the input operation surface 10a is pressed. This is one of the effects of having the glass member 30 that is not easily deformed.

  Furthermore, since the outermost surface of the glass composite 10 is the resin base material 20, it is possible to prevent the glass pieces from scattering even if the glass composite 10 is broken. Therefore, it is possible to realize the glass composite 10 having excellent visibility and safety at the time of breakage, and the input device 1 having a narrow frame structure having excellent visibility and safety at the time of breakage.

  The acrylic resin-based adhesive tape used for the adhesive layer 70 generally has a thickness of about 20 μm to 100 μm, and it has been found that if a steep step of about 10 μm to 20 μm occurs, it is difficult to cover the adhesive layer with no gap. This causes generation of bubbles having a size that can be visually recognized in the translucent screen area. A gap is formed in the adhesive layer 70 that bonds the glass composite 10 and the sensor substrate 80, resulting in a visually inferior bubble defect, or the sensor substrate 80 is peeled off, resulting in poor characteristics such as sensor sensitivity and detection position accuracy. Is likely to be. Moreover, a defect may become apparent due to changes in the temperature and humidity environment. Therefore, the glass composite 10 with reduced steps, which is a feature of the present embodiment, has a very remarkable effect.

  This embodiment can be modified as follows. As the resin base material 20, a translucent film base material such as polymethyl methacrylate resin-based polymer, polymethylpentene, triacetyl cellulose, and cycloolefin-based polymer can be used in addition to polyethylene terephthalate (PET).

  The decorating member 21 can be formed by a printing method such as screen printing, ink jet printing, gravure printing, or offset printing. By forming by a printing method, it is possible to form a decorative layer relatively easily and inexpensively. Moreover, the formation method of the decorating member 21 is not limited to the printing method, and the decorating member 21 can be formed by a transfer method in which the decorating member 21 is transferred from a transfer sheet on which the decorating member 21 is formed in advance, or a vapor deposition method. . In the case of a hue such as white, it is necessary to overlap the printing layer in order to make it non-translucent, and the thickness is about 15 to 50 μm.

  The adhesive member 60 uses a pressure sensitive adhesive, an ultraviolet curable adhesive, a thermosetting adhesive, a thermosetting combined ultraviolet curable adhesive, a moisture adhesive, an ultraviolet moisture curable adhesive, or the like. Any transparent type can be used. Either an adhesive type that is affixed like a double-sided tape or an adhesive type that applies liquid can be selected as appropriate.

  The glass composite 10 as shown in FIG. 1 can be designed so that the side surface of the frame 40 has a curved surface, and is generally formed by resin molding. As the resin material, a thermoplastic resin can be easily molded. For example, polycarbonate (PC) or polymethyl methacrylate (PMMA) can be used. The frame 40 may be a translucent member, and the outer shape may be a combination of planes or a curved surface such as an arc. Although it is preferable to use a molding resin as the frame body 40, since the restriction on the linear expansion coefficient can be relaxed, various different materials can be applied. For example, an alloy material such as a magnesium alloy may be used.

It is practical to fill the adhesive resin 50 in the space where the frame 40 and the glass member 30 are loosely fitted. For example, after arranging and fixing so that the planar positional relationship between both members is constant, a UV curable resin combined with thermosetting is applied to the gap, followed by UV irradiation and heat curing, and an adhesive resin is applied to the gap. 50 may be filled. For example, the curing conditions are temporary fixing by ultraviolet irradiation for 15 seconds (irradiation light 365 nm, 150 mW / cm ² ), thermosetting 80 ° C., 60 minutes. By doing so, the stress can be relieved by the adhesive resin 50 even when the linear expansion coefficients of the glass member 30 and the frame body 40 are different.

  The adhesive resin 50 is preferably a transparent resin that transmits visible light. If a transparent resin that transmits visible light is used for the adhesive resin 50, the boundary with the glass member 30 is not conspicuous and can be almost integrated to form a light-transmitting region.

  The adhesive resin 50 can also be a thermosetting or ultraviolet curable resin. Among these, the ultraviolet curable resin can be cured in a short time, and the residual stress is small because there is little temperature change and volume shrinkage during bonding. Moreover, the process of bonding the glass member 30 and the frame body 40 is simple, and the mass productivity is excellent. Since the residual stress at the time of adhesion is small if it is low shrinkage and low stress, any of urethane type, acrylic type, epoxy type and the like may be used. Further, the adhesive resin 50 may have a structure that is only applied to several places in the entire circumference of the gap.

  In the present embodiment, the translucent substrate 83 of the sensor substrate 80 is a glass substrate, but is not limited to a glass substrate, and may be a film substrate. However, if the input device 1 is only a film base material, it will be deformed during the input operation. In this embodiment, since the glass member 30 is used as the surface protection member, there is no concern that the sensor substrate 80 formed of the film base material is deformed even if the input operation surface 10a of the input device 1 is pressed too much. . For the sensor substrate 80, a film substrate such as polyethylene terephthalate, polymethyl methacrylate resin-based polymer, polymethylpentene, triacetyl cellulose, cycloolefin-based polymer, or the like can be used. The thickness of the film base material used for the touch panel is generally 200 μm or less, and the thickness of the glass base material is generally 0.3 mm to 1.1 mm. Can be made thinner.

  The glass composite 10 of the present embodiment is characterized by having a translucent resin base material 20, but the resin material is not particularly limited as long as it is translucent. A base material etc. can be used. Further, the surface of the resin base material 20 on which the decorating member 21 is not laminated is flat at the boundary between the translucent region 11 and the decorating region 12. Since it is flat and has no steps, it is suitable for the input operation surface 10a of the input device 1.

  Moreover, it is preferable to have a hard-coat process as mentioned above in the surface which has not laminated | stacked the decorating member 21 of the resin base material 20. As shown in FIG. For example, when applied to the input operation surface 10a of the input device 1, an effect of preventing scratches and dirt can be obtained, which is preferable. In the present embodiment, a hard coat material that does not impair the translucency of the translucent region 11 is desirable. Furthermore, it is desirable that the hard coat treatment has an antireflection film effect. In particular, it is preferable that the refractive index of the resin base material 20 is smaller than that of the glass member 30 and the refractive index of the hard coat material is smaller than that of the resin base material 20. If it carries out like this, it can apply to the input device 1 and the optimal antireflection effect can be acquired.

<Second Embodiment>
FIG. 5 is a schematic cross-sectional view showing the glass composite 10 in the second embodiment. In this embodiment, the glass member 30 has a chamfered peripheral edge on at least one surface. This chamfering was formed by grinding a glass member 30 having a thickness of 0.7 mm to an angle of about 45 degrees with a width of about 30 μm from the end face. The width and angle of the chamfer may be adjusted as appropriate. In particular, when the end surface of the decorative member 21 in the vicinity of the light-transmitting region 11 is an inclined surface, it is preferable to be close to the inclination.

  By doing so, the thickness of the adhesive member 60 does not change steeply in the vicinity of the end face of the decorative member 21, so that the resin base material 20 and the glass member 30 can be more favorably bonded. Therefore, the quality of the glass composite 10 in which the resin base material 20 and the glass member 30 are bonded is stabilized.

  In particular, when the decorating member 21 needs to be thickened to about 15 to 50 μm, the adhesive member 60 cannot follow the stepped portion of the decorating member 21, and bubbles are generated so that the bubbles are visually recognized. Cheap. When applying to such a decorating member 21, it is preferable to set it as the glass member 30 which chamfered. By so doing, the thickness of the adhesive member 60 does not change steeply in the vicinity of the end face of the decorative member 21, so that bubble defects can be reduced. Moreover, it can also prevent that the resin base material 20 deform | transforms and produces an unevenness | corrugation.

  In the second embodiment, the same modification as described in the first embodiment is possible. In the first embodiment and the second embodiment, the structure described for the glass composite 10 and the input device 1 does not limit the manufacturing method. For example, the resin base material 20 may be bonded after the glass member 30 and the frame body 40 are bonded to the sensor substrate 80.

  The glass composite 10 described in detail in the first embodiment and the second embodiment can be widely used not only for the input device 1 but also for a part of the casing of the electronic device. Even when the input device 1 is not provided, it is particularly suitable for a case where an optical component that is mounted in a plane like the display device 90 is mounted on a housing. Therefore, an electronic device using the glass composite 10 with good visibility can be provided.

  In the decorative region 12 of the glass composite 10, an opening is formed for an electronic component such as a microphone or a speaker as necessary, or a camera lens or a light transmitting window for infrared communication may be included. . In such processing, a member formed by resin molding, which can freely form a curved surface and is relatively easy to drill, is desirable. Further, the glass composite 10 may not be formed with the openings 22 and 23. In particular, it is suitable for an electronic device having a narrow frame structure on four sides, and particularly suitable for an electronic device that does not have a main audio function, such as an electronic book, an electronic notebook, or a digital photo frame.

  Furthermore, it goes without saying that the glass member 30 is not limited to the rectangular glass member 30 as shown in FIG. For example, it can be used for an electronic device such as an electronic water tank or an electronic watch having a circular screen.

DESCRIPTION OF SYMBOLS 1,101 Input device 10 Glass composite 10a, 110a Input operation surface 11 Translucent area 12 Decorating area 20, 120 Resin base material 21, 121 Decorating member 22, 23 Opening 30 Glass member 40 Frame 50 Adhesive resin 60, 126 Adhesive member 70, 71 Adhesive layer 80, 180 Sensor substrate 81 Input unit 82 Wiring unit 83 Translucent base material 84 Upper electrode 85 Upper wiring 86 Lower electrode 87 Lower wiring 88 Electrical connection part 89 Protective base material 90 Display device 100 Static Glass insert molded product with capacitance sensor 110 Glass insert molded product 123 Air bubble 125 Flat plate (sensor substrate, etc.)
130 flat glass 131 decorative member 140 resin frame 170 adhesive layer

Claims (5)

A translucent resin base material, a decorative member laminated on one surface of the resin base material, a glass member facing the resin base material, a frame body facing the decorative member, and the resin A translucent adhesive member that bonds one surface of the substrate and one surface of the glass member;
The decorative member is provided so as to constitute a frame-shaped decorative region surrounding the window-shaped transparent region, the frame body is loosely fitted to the glass member, and one surface of the decorative member is the adhesive member. The other surface of the glass member and the other surface of the frame body constitute a flat surface in the same plane in the vicinity of the glass member. Glass composite.   2. The glass composite according to claim 1, wherein the frame body is disposed so as to form a gap portion that is loosely fitted to the glass member, and the gap portion is filled with an adhesive resin. .   3. The glass composite according to claim 1, wherein the other surface of the resin base material is flat at a boundary between the translucent region and the decorative region.   The glass composite body according to any one of claims 1 to 3, wherein a peripheral portion of one surface of the glass member is chamfered. A sensor substrate including an input unit and a wiring unit, a glass composite according to any one of claims 1 to 4, and an adhesive layer for bonding the sensor substrate and the glass composite. Have
The sensor substrate is fixed to the flat surface via the adhesive layer, the input portion is positioned so as to overlap the light transmitting region in a plane, and the wiring portion overlaps the decoration region in a plane. An input device, characterized in that

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