JP3823110B2 - Touch panel - Google Patents

Description

The present invention relates to a touch panel in which a transparent insulating film does not peel off during handling work or rack storage, and the number of machine stops is small even during rack storage by a machine.

Conventionally, an LCD (liquid crystal display) or CRT connected to a computer
By placing on a display screen such as (CRT) and pressing from above with a finger or pen according to instructions displayed on the fluoroscopic display screen, the position of the pressed location on the display screen can be input to the computer There is a touch panel. The most common transparent electrode type (resistive film type) touch panel has two types, a digital (matrix) type that detects specific coordinates in a matrix and an analog type that can detect arbitrary coordinates. Yes, the digital method is used for menu input, and the analog method is used for inputting figures and handwritten characters. In either case of a digital method or an analog method, a film / glass structure or a film / film structure can be adopted.

  Here, as shown in FIG. 13, the film / glass structure touch panel includes an upper electrode member 101 having a transparent electrode on the lower surface of the transparent insulating film 111 and a lower electrode member having a transparent electrode on the upper surface of the glass plate 121. 102, and the upper electrode member 101 and the lower electrode member 102 are bonded to each other at the peripheral edge with an adhesive, a double-sided tape 104, or the like. In each drawing, the transparent electrode is omitted, and the laminated state of the film material and the glass material is shown in a simplified manner so as to be easily understood.

  The touch panel having a film / film structure includes an upper electrode member 101 having a transparent electrode on the lower surface of the transparent insulating film 111, and a lower electrode member 102 having a transparent electrode on the upper surface of the transparent insulating film 122, and glass. A plate (transparent support plate) 105 is bonded to the entire lower surface of the lower electrode member 102 (see FIG. 17).

The film / glass structure and the film / film structure are disclosed in, for example, Patent Document 1 and Patent Document 2 below.
Japanese Patent No. 2587975 Japanese Utility Model Publication No. 3-37055

  However, the conventional touch panel has the following problems because the end surfaces of the transparent insulating films 111 and 122 and the glass plates 121 and 105 are formed by cutting perpendicular to the surfaces of the respective members.

  (1) First, when the touch panel is handled, the transparent insulating film 111 is accidentally peeled off, resulting in a defective product. When the touch panel is handled by hand, the end surfaces of two parallel sides of the touch panel are pinched with fingers so that fingerprints are not attached to the input area, but it is difficult to always press the finger 106 perpendicular to the end surfaces. When the size of the touch panel is large, the above problem is particularly likely to occur. When a finger is pressed against the end surface of the transparent insulating film 111 of the touch panel from an oblique direction, the upper end surface of the transparent insulating film is compressed, and when it cannot be compressed, the lower end surface of the transparent insulating film 111 is lifted, that is, peeling occurs. 14).

  Further, when handling the touch panel, a finger is pressed against the end face of the transparent insulating film of the touch panel from an oblique direction, and the upper end face of the transparent insulating film is compressed. As a result, the adhesive 104 is also compressed, and the upper electrode member 101 and the lower end are pressed. It may be pushed outward from between the side electrode members 102. In the case of a double-sided tape, since the adhesive 104 is applied and formed on the surface of the core material, the adhesive 104 of the double-sided tape is compressed as well, and between the upper electrode member 101 and the lower electrode member 102. May be pushed outward. If the sticking adhesive 104 sticks to the finger 106 as it is, the next touch of the finger 106 with the finger 106 may move to the front or back surface of the touch panel 108.

  Alternatively, even when the sticking adhesive 104 sticks to the pressing tool for storing the touch panel 108 in the rack 7 as shown in FIG. During the repetition, the deposits are peeled off from the pressing tool, and the peeled deposits may move to the front and back surfaces of the other touch panel 108 in the rack 7.

  As described above, the problem that shifts to the front and back surfaces of the touch panel 108 is the visibility and input characteristics (when glue is attached to the front surface).

  The former “visibility” problem is that the touch panel is installed on a display such as an LCD and performs input while seeing through the display. It is.

  In addition, the latter problem of “input characteristics” is that even when characters are written using an input pen, even if the pen tip is slid along the touch panel surface, the smoothness of the input surface is impaired by the attached matter. The problem is that the writing quality is poor. That is, the pen does not move smoothly and the intended input cannot be performed. This is a fatal wound for a touch panel.

  (2) Further, when the sticking out adhesive 104 transports the touch panel using the robot hand after the handling operation, the chuck of the robot hand and the touch panel may be difficult to separate by the adhesive 104. is there. In that case, the touch panel is moved to a place different from the planned place, that is, it is dropped on the floor and the touch panel is damaged.

  (3) Furthermore, recent touch panels are becoming narrower and the width of the double-sided tape or the like is narrow, so when the sticking adhesive 104 sticks out to the finger 106, the pressing tool or the like as described above, The touch panel may be completely transferred to the finger 106, the pressing tool, or the like. In this case, the upper electrode member 101 and the lower electrode member 102 of the touch panel are bonded to each other at the peripheral edge, and a partition for separating the inner side of the touch panel (the air layer between the electrodes) and the outer side of the touch panel is a part. There are problems such as the occurrence of Newton rings and malfunction.

  In the former “Newton ring generation”, since air can freely enter and exit from the missing part of the partition, the repulsive force due to the air layer against the deformation of the upper electrode member 101 does not work, and the upper electrode member 101 does not move while repeating the input. It will hang down and a Newton ring will occur.

  There are two cases of the latter “malfunction” problem. First, since moisture enters the inside of the touch panel (the air layer between the electrodes) from the missing part of the partition, the metal part deteriorates, resulting in a malfunction. The second case is a case where the foreign matter enters the inside of the touch panel (air layer between the electrodes) from the missing portion of the partition, and the electrodes become conductive due to the foreign matter, resulting in a malfunction.

  (4) Also, when the touch panel 108 is accommodated in the rack 7, peeling of the transparent insulating film 111 becomes a problem. Storage of the touch panel 108 in each stage of the rack 7 is performed by inserting the two parallel sides of the touch panel 108 into the back along the groove 7b cut horizontally inside the side plate of the rack 7 (see FIG. 15). However, since the width of the groove 7b is narrow, the tip of the touch panel 108 is likely to come into contact with the shelf 7a of the rack 7 at each insertion port of the rack 7. Therefore, when only the end surface of the transparent insulating film 111 of the touch panel 108 hits the shelf 7a of the rack 7, the member below the transparent insulating film 11 is inserted into the groove 7b of the rack 7, whereas the transparent insulating film 111 Is pushed out of the insertion slot and peeling occurs (see FIG. 16).

  In addition, when the touch panel 108 is continuously stored in each stage of the rack 7, if the end face of the transparent insulating film 111 and the rack 7 a of the rack 7 come into contact with one stage, the touch panel 108 is inserted at that time. The machine stopped due to the inability to perform or the time to insert the next stage.

  These (1) to (4) are all problems specific to the touch panel.

  Accordingly, an object of the present invention is to provide a touch panel that solves the above-described problems, does not cause peeling of the transparent insulating film during handling work or rack storage, and has a small number of machine stops even during rack storage by a machine. is there.

  To achieve the above object, according to the first aspect of the present invention, the upper electrode member having a transparent electrode on the lower surface of the transparent insulating film, and the lower electrode member having a transparent electrode on the upper surface of the glass plate, Provided is a touch panel having an inclined end face inclined inward as the transparent insulating film of the upper electrode member extends from bottom to top in the entire periphery.

  According to the second aspect of the present invention, the upper electrode member having the transparent electrode on the lower surface of the transparent insulating film, the lower electrode member having the transparent electrode on the upper surface of the transparent insulating film, and the lower surface of the lower electrode member A transparent support plate made of a glass plate bonded to the entire surface, and the transparent insulating film of the upper electrode member and the transparent insulating film of the lower electrode member are inwardly directed from the bottom to the top in the entire periphery. Provided is a touch panel having inclined end surfaces that are inclined, and wherein the transparent insulating film of the upper electrode member is disposed on the upper surface of the transparent electrode film of the lower electrode member excluding the inclined end surface.

  According to the third aspect of the present invention, a retreat portion is formed in which the end surface of the entire periphery of the transparent insulating film of the upper electrode member is retreated inward from the end surface of the entire periphery of the glass plate of the lower electrode member. A touch panel according to the first aspect is provided.

  According to the fourth aspect of the present invention, a retreating portion is formed in which the end surface of the lower electrode member on the entire periphery of the transparent insulating film is retreated inward from the end surface of the entire periphery of the transparent support plate of the glass plate. A touch panel according to the first aspect is provided.

  According to the 5th aspect of this invention, the width | variety of the said receding part provides the touch panel as described in any one of the 3rd or 4th aspect which is the range of 0.1-1.5 mm.

  According to the sixth aspect of the present invention, the acute angle θ between the normal line of the inclined end surface and the vertical axis is 35 to 75. The touch panel as described in any one of 1st-5 which is the range of this is provided.

  Since the touch panel of the present invention has the above-described configuration and operation, the following effects are achieved.

  That is, in the touch panel with the film / glass structure of the present invention, since the transparent insulating film of the upper electrode member has an upward inclined end surface in the entire periphery, a finger is obliquely applied to the end surface of the transparent insulating film of the touch panel during the touch panel handling operation. Even if pressed, the upper end surface of the transparent insulating film is not greatly compressed. Therefore, the lower end face of the transparent insulating film is not lifted, that is, no peeling occurs.

  In addition, since the adhesive is not compressed, it is not pushed outward from between the upper electrode member and the lower electrode member, so it does not adhere to fingers, pushers or robot hands, and moves to the front or back surface of the touch panel. The risk of getting lost is also eliminated. Therefore, the extruded adhesive does not impair the visibility and input characteristics, and the extruded adhesive does not make it difficult for the robot hand chuck and the touch panel to be separated from each other. The touch panel will not be damaged. Further, the extruded adhesive does not completely transfer the touch panel to the finger, the pressing tool, or the like, and the generation of Newton rings or malfunction can be avoided.

  In addition, since the transparent insulating film of the upper electrode member has an upward inclined end surface in the entire periphery of the touch panel having the film / glass configuration of the present invention, only the end surface of the transparent insulating film of the touch panel is the rack when stored in the rack of the touch panel. Even if it is about to hit the shelf, the entire touch panel is caused to flow obliquely downward and forward along the inclined end surface, and the hit is avoided. Therefore, only the transparent insulating film is not pressed out of the insertion port, and peeling does not occur.

  In addition, even when the touch panel rack is stored in each stage continuously by the machine, the contact between the end face of the transparent insulating film and the rack shelf is avoided as described above, so the number of machine stops is small. Become.

  In the touch panel having the film / film configuration of the present invention, the transparent insulating film of the upper electrode member and the transparent insulating film of the lower electrode member respectively form an upward inclined end surface in the entire periphery, and the transparent insulation of the upper electrode member Since the film is disposed only on the transparent insulating film of the lower electrode member, in other words, the transparent insulating film of the upper electrode member is disposed on the upper surface excluding the inclined end surface of the transparent insulating film of the lower electrode member. The same effects as those of the touch panel having the film / glass structure of the present invention described above can be obtained.

  It is to be noted that, by appropriately combining arbitrary embodiments of the various embodiments described above, the effects possessed by them can be produced.

  Although the present invention has been fully described in connection with preferred embodiments with reference to the accompanying drawings, various variations and modifications will be apparent to those skilled in the art. Such changes and modifications are to be understood as being included therein, so long as they do not depart from the scope of the present invention according to the appended claims.

  These and other objects and features of the invention will become apparent from the following description taken in conjunction with the preferred embodiments with reference to the accompanying drawings.

  Hereinafter, a touch panel according to an embodiment of the present invention will be described in detail with reference to the drawings. In the accompanying drawings, the same parts are denoted by the same reference numerals.

  The touch panel 8 according to the first embodiment of the present invention shown in FIG. 1 includes, for example, a rectangular plate-shaped transparent upper electrode member 1 having a transparent electrode on the lower surface of a rectangular transparent insulating film 11, and a rectangular glass plate, for example. In a touch panel 8 having a film / glass structure in which, for example, a rectangular plate-shaped transparent lower electrode member 2 having a transparent electrode on the upper surface of 21 is opposed to each other through a large number of transparent spacers 3 and bonded at the periphery. The transparent insulating film 11 of the upper electrode member 1 has an upward inclined end surface 11a that is inclined inwardly from the bottom toward the top in the entire periphery.

  The transparent insulating film 11 used for the upper electrode member 1 is an engineering plastic such as polycarbonate, polyamide, or polyether ketone, or a resin film such as acrylic, polyethylene terephthalate, or polybutylene terephthalate. Can be used. A hard coat layer can be formed on the upper surface of the transparent insulating film 11 of the upper electrode member 1. The hard coat layer may be an inorganic material such as a siloxane resin, or an organic material such as an acrylic epoxy or urethane thermosetting resin or an acrylate photocurable resin. Further, non-glare treatment can be performed on the upper surface of the transparent insulating film 11 of the upper electrode member 1 to prevent light reflection. For example, it is good to carry out uneven | corrugated processing or to mix fine particles, such as extender pigment, a silica, and an alumina, in a hard-coat layer. Further, the transparent insulating film 11 of the upper electrode member 1 may be a laminated body in which a plurality of films are overlapped instead of a single film.

  As the glass plate 21 used for the lower electrode member 2, soda glass, borosilicate glass, tempered glass, or the like can be used.

  A feature of the first embodiment of the present invention is that, in the touch panel 8 having a film / glass configuration, the transparent insulating film 11 of the upper electrode member 1 has an upward inclined end surface 11a in the entire periphery. With this configuration, even when a finger is pressed against the end surface of the transparent insulating film 11 of the touch panel 8 from an oblique direction during handling of the touch panel 8, the upper end surface of the transparent insulating film 11 is not greatly compressed (see FIG. 3). Therefore, the lower end face of the transparent insulating film 11 is not lifted, that is, no peeling occurs.

  Further, since the adhesive 4 is not compressed, it is not pushed outward from between the upper electrode member 1 and the lower electrode member 2, so that it does not adhere to fingers, pushers or robot hands, and the surface of the touch panel 8. The possibility of moving to the backside is also eliminated. Accordingly, the extruded adhesive 4 does not impair the visibility and input characteristics, and the extruded adhesive 4 does not make it difficult to separate the chuck of the robot hand from the touch panel 8. The touch panel 8 is not damaged by being dropped. Furthermore, the extruded adhesive 4 does not completely transfer the touch panel 8 to a finger, a pressing tool, or the like, and it is possible to avoid the occurrence of Newton rings and malfunction.

  Further, since the transparent insulating film 11 of the upper electrode member 1 has an upward inclined end surface 11a in the entire periphery, only the end surface of the transparent insulating film 11 of the touch panel abuts against the shelf 7a of the rack 7 when the touch panel 8 is stored in the rack 7. Even if it becomes so, the touch panel 8 whole is made to flow diagonally downward and forward along the inclined end surface 11a, and the contact is avoided (see FIG. 4). Therefore, only the transparent insulating film 11 is not pressed out of the insertion port, and peeling does not occur.

  Further, even when the storage of the touch panel 8 in each stage of the rack 7 is continuously performed by the machine, the contact between the end surface of the transparent insulating film 11 and the rack shelf 7a is avoided as described above. The number of stops is also reduced.

  In addition, the said inclined end surface 11a is formed as a cut cross section of the transparent insulating film 11, and acute angle (theta) (inclination angle (theta)) which the normal line of the said inclined end surface 11a makes with a vertical axis is 35-75. It is preferable to be in the range. The inclination angle θ is 35. If it is less than, it will be difficult to cut the transparent insulating film 11. On the other hand, the inclination angle θ is 75. If it exceeds the range, it will be difficult to obtain the effects resulting from the inclined end face 11a. A more preferable range of the inclination angle θ of the inclined end face is 40 to 70. It is. The inclination angle θ is 40. By setting it as the above, it can avoid reliably that the transparent insulating film 11 becomes difficult to cut. On the other hand, the inclination angle θ is 70. By setting it as the following, the effect resulting from the above-mentioned inclined end surface 11a can be acquired reliably. Further, the inclined end face 11a is not limited to a smooth one, and includes a non-smooth one as long as it has an inclination angle θ as an overall tendency. In that case, as shown in FIG. 5, the angle formed by the line (broken line in the figure) connecting the cut cross-section branch point A on the upper surface of the film and the cut cross-section branch point B on the lower surface of the film with respect to the lower surface of the film is the inclination angle θ. To do.

  If the above-mentioned transparent electrode is an analog type touch panel, it is formed one by one on the upper electrode member 1 and the lower electrode member 2, but if it is a digital type touch panel, it is formed on the upper electrode member 1 and the lower electrode member 2, respectively. A plurality of strip-like patterns are formed. As a material of the transparent electrode, tin oxide, indium oxide, antimony oxide, zinc oxide, cadmium oxide, metal oxide film such as indium tin oxide (ITO), composite film mainly composed of these metal oxides, or It can be formed by a metal film such as gold, silver, copper, tin, nickel, aluminum, or palladium. Further, the transparent electrode can be a multilayer film having two or more layers. These transparent conductive films constituting the transparent electrode can be formed by vacuum deposition, sputtering, ion plating, CVD method or the like. The transparent conductive film can be patterned by a method of removing an unnecessary portion other than a portion to be a transparent electrode by etching with an acid or the like. Moreover, you may make it cover an insulating film except the part used as the transparent electrode on a transparent conductive film.

  The touch panel body 81 is normally connected to an external circuit via a connector 82, and a lead line is provided from the transparent electrode to the input / output end of the touch panel (see FIG. 8). The lead line is usually a conductive paste such as gold, silver, copper, nickel, or a conductive metal such as carbon, a printing method such as screen printing, offset printing, gravure printing, or flexographic printing, or Although it is performed by a brush coating method or the like, it is not limited to this as long as conduction between the connector 82 and the transparent electrode can be achieved. In addition, the connecting portion of the transparent electrode and the lead wire, that is, two sides facing the transparent electrode in the case of an analog type touch panel, and a strip electrode (also referred to as a bus bar) on one short side of each strip pattern in the case of a digital type touch panel. ) Is formed. The belt-like electrode can be made of the same material and forming means as the lead wire.

  Usually, a spacer exists between the upper electrode member 1 and the lower electrode member 2. The spacer is generally formed in a frame shape or the like. As the spacer, in addition to a resin film similar to the transparent insulating substrate, an appropriate resin printing layer or coating layer such as an acrylic resin, an epoxy resin, or a silicone resin can be used. In general, this spacer often serves as an adhesive layer made of a double-faced tape 4 in the form of a frame for fixing the upper electrode member 1 and the lower electrode member 2, an adhesive, or an adhesive. Screen printing etc. are used when forming the contact bonding layer which consists of an adhesive agent or an adhesive.

  When a large-sized touch panel is formed, dot-like spacers 3 are formed on the surface of one of the transparent electrodes in order to secure a gap between the transparent electrodes of the upper electrode member 1 and the lower electrode member 2 (FIG. 1). Can be omitted if the touch panel is small. As the dot-like spacer 3, for example, an acrylate resin such as a melamine acrylate resin, a urethane acrylate resin, an epoxy acrylate resin, a methacryl acrylate resin, or an acrylic acrylate resin, or a photo-curing resin such as a polyvinyl alcohol resin is used in a photo process. It can be obtained by forming in the form of fine dots. Further, a large number of fine dots can be formed by a printing method to form a spacer. Moreover, it can obtain also by spraying or apply | coating the dispersion liquid of the particle | grains which consist of an inorganic substance and organic substance, and drying.

The touch panel 8 shown in FIG. 1 has been described above, but the configuration of the touch panel of the present invention is not limited to the above-described first embodiment.
For example, the touch panel 8A shown in FIG. 2 is a touch panel having a film / film configuration according to the second embodiment of the present invention, and the upper electrode member 1 having a transparent electrode on the lower surface of the transparent insulating film 11 and the transparent insulating film 22. A lower electrode member 2 having a transparent electrode on its upper surface, and a glass plate (transparent support plate) 5 is adhered to the entire lower surface of the lower electrode member 2 with a transparent adhesive layer 10. In the case of a touch panel, the transparent insulating film 11 of the upper electrode member 1 and the transparent insulating film 22 of the lower electrode member 2 respectively have upward inclined end surfaces 11a and 22a in the entire periphery, and the upper electrode member 1 transparent insulating film 11 is disposed only on the transparent insulating film 22 of the lower electrode member 2, in other words, the transparent insulating film 11 of the upper electrode member 1 is not transparent. Film 11 is disposed on the upper surface except for the inclined end face 22a of the transparent insulation film 22 of the lower electrode member 2.

  As the transparent insulating film 22 used for the lower electrode member 2, like the transparent insulating film 11 of the upper electrode member 1, engineering plastics such as polycarbonate, polyamide, or polyether ketone, acrylic, polyethylene terephthalate, Alternatively, a polybutylene terephthalate film or the like can be used, and a laminated body in which a plurality of films are stacked instead of a single film can be used.

  As the glass plate (transparent support plate) 5 bonded to the entire lower surface of the lower electrode member 2, soda glass, borosilicate glass, tempered glass, or the like can be used.

  In the touch panel 8A having the film / film configuration, the transparent insulation of the touch panel 8A is handled during the handling operation of the touch panel 8A in the same manner as the touch panel 8 having the film / glass configuration according to the first embodiment of the present invention described above. Even if a finger is pressed against the end surfaces 11a and 22a of the film 11 and the transparent insulating film 22 from an oblique direction, the upper portions of these end surfaces are not greatly compressed. Therefore, the lower end surfaces of the transparent insulating film 11 and the transparent insulating film 22 are not lifted, that is, peeling does not occur.

  In addition, since the adhesive 4 is not compressed, it is not pushed outward from between the upper electrode member 1 and the lower electrode member 2, so that it does not adhere to fingers, pushers or robot hands, and the surface of the touch panel 8A. The possibility of moving to the backside is also eliminated. Therefore, the extruded adhesive 4 does not impair visibility and input characteristics, and the extruded adhesive 4 does not make it difficult to separate the chuck of the robot hand from the touch panel 8A. The touch panel 8A is not damaged by being dropped. Further, the extruded adhesive 4 does not completely transfer the touch panel 8A to a finger, a pressing tool, or the like, and it is possible to avoid the occurrence of Newton rings and malfunction.

  Further, even when only the end surfaces of the transparent insulating film 11 and the transparent insulating film 22 of the touch panel 8A are likely to come into contact with the shelf 7a of the rack 7 when the touch panel 8A is stored in the rack 7, the first embodiment of the present invention described above. Similarly to the touch panel 8 having such a film / glass configuration, the entire touch panel 8A is caused to flow obliquely downward and forward along the inclined end surfaces 11a and 22a, thereby avoiding a bump. Therefore, only the transparent insulating film 11 or the transparent insulating film 22 is not pressed out of the insertion port, and peeling does not occur.

  In addition, when the storage of the touch panel 8A in each stage of the rack 7 is continuously performed by a machine, the contact between the end surfaces of the transparent insulating film 11 and the transparent insulating film 22 and the rack shelf 7a is avoided as described above. As a result, the number of machine stops is also reduced.

  Note that the inclined end surfaces 11a and 22a in the touch panel 8A having the film / film configuration are formed as cut sections of the transparent insulating films 11 and 22, and an acute angle θ (inclination angle) that a normal line of the inclined end surfaces 11a and 22a forms a vertical axis. θ) is 35 to 75 for the same reason as in the case of the touch panel 8 having the film / glass configuration according to the first embodiment of the present invention described above. It is preferable to be in the range. A more preferable range of the inclination angle θ of the inclined end face is 40 to 70 for the same reason as described above. It is. Further, the inclined end faces 11a and 22a are not limited to smooth ones, and include non-smooth ones having an inclination angle θ as an overall tendency.

  The constituent members other than the transparent insulating film 22, the adhesive layer 10 and the glass plate (transparent support plate) 5 of the lower electrode member 2 of the touch panel 8A having a film / film configuration according to the second embodiment of the present invention are described above. A touch panel similar to a film / glass touch panel is used.

  Moreover, it is more preferable that the touch panel of this invention has the receding part (glass plate exposed part) 9 adjacent to the edge part of film material. Specifically, in the touch panel 8 having the film / glass configuration according to the first embodiment of the present invention, the transparent insulating film 11 of the upper electrode member 1 is the glass plate 21 of the lower electrode member 2 in the entire periphery. It is made to recede to the inner side to form a receding part (glass plate exposed part) 9 (see FIG. 6). In the touch panel 8A having the film / film configuration according to the second embodiment of the present invention, the transparent insulating film 22 of the lower electrode member 2 is located on the inner side of the glass plate (transparent support plate) 5 in the entire periphery. The retracted portion (glass plate exposed portion) 9 is formed by retreating (see FIG. 7). In the case of the touch panel 8A having a film / film configuration, even if the transparent insulating film 22 of the lower electrode member 2 is retracted, the transparent insulating film 11 of the upper electrode member 1 is the transparent insulating film 22 of the lower electrode member 2. Arranged only on top, in other words, the relationship in which the transparent insulating film 11 of the upper electrode member 1 is disposed on the upper surface of the lower electrode member 2 excluding the inclined end surface 22a remains unchanged.

  With this configuration, the attachment of the connector 82 to the touch panel body 81 is facilitated. In general, after bonding the upper electrode member 1 and the lower electrode member 2 with a double-sided tape 4 or the like provided with a notch 4a at the peripheral edge, as shown in FIG. 8, one side of the obtained touch panel body 81 In FIG. 2, an end portion of a flexible printed wiring board (FPC) is inserted as a connector 82 between the upper electrode member 1 and the lower electrode member 2, and the end portion of the flexible printed wiring board is used with an anisotropic conductive adhesive. And thermocompression bonding by a thermocompression bonding machine. However, since the gap between the upper electrode member 1 and the lower electrode member 2 is small, the insertion of the connector 82 is not as easy as inserting a thread through the needle (see FIG. 10), leading to a reduction in production efficiency. ing. On the other hand, in the touch panel 8 having a film / glass configuration according to the first embodiment of the present invention, the transparent insulating film 11 of the upper electrode member 1 is more than the glass plate 21 of the lower electrode member 2 in the entire periphery. If the receding part (glass plate exposed part) 9 receding to the inside is arranged, the end of the connector 82 is first applied to the receding part 9 provided on the upper surface of the glass plate 21 of the lower electrode member 2. Thereafter, the end of the connector 82 can be easily inserted between the upper electrode member 1 and the lower electrode member 2 by sliding along the upper surface of the lower electrode member 2 as it is (see FIG. 9). ). Also in the touch panel 8A having the film / film configuration according to the second embodiment of the present invention, the transparent insulating film 22 of the lower electrode member 2 is inside the glass plate (transparent support plate) 5 in the entire periphery. If the retracted portion (glass plate exposed portion) 9 that has been retracted is disposed, the end of the connector 82 is first applied to the retracted portion 9 provided on the upper surface of the glass plate (transparent support plate) 5 and then as it is. By sliding along the upper surface of the glass plate (transparent support plate) 5 and the inclined end surface 22a of the lower electrode member 2, the end portion of the connector 82 can be easily placed between the upper electrode member 1 and the lower electrode member 2. It can be inserted (see FIG. 11).

  Further, by providing the retreating portion 9, the finger does not contact the end surfaces of the transparent insulating films 11 and 22 even during the touch panel handling operation, and it is easier to prevent peeling compared to the case where only the inclined end surfaces 11a and 22a are provided. (See FIG. 12).

  The width d of the receding portion 9 is preferably in the range of 0.1 to 1.5 mm. If the width d is less than 0.1 mm, it is difficult to hit the end of the connector 82. On the other hand, if the width d exceeds 1.5 mm, the area where the electrical function is not performed in the touch panels 8 and 8A becomes unnecessarily large, which goes against the trend of narrowing the frame in the industry.

The adhesive layer (adhesive layer 10 and double-sided tape 4) used for adhesion between the upper electrode member and the lower electrode member of the present invention or between the lower electrode member and the transparent support plate is shown in FIGS. 6, FIG. 7 and FIGS. 9 to 12 do not have an inclined end face, but may be inclined in the same manner as the inclined end faces of the upper electrode member and the lower electrode member.
In the touch panel of FIGS. 1, 3, and 4, an example in which the double-sided tape 4 has an inclined end surface 4 b similarly to the inclined end surface 11 a of the upper electrode member 1 is shown in FIG. 19. Further, in the touch panel of FIG. 2, an example in which the double-sided tape 4 and the adhesive layer 10 have inclined end surfaces 4 b and 10 a similar to the inclined end surface 11 a of the upper electrode member 1 and the inclined end surface 22 a of the lower electrode member 2 is shown in FIG. 20. Show. Moreover, in the touch panel of FIG. 6, the example which the double-sided tape 4 has the inclination end surface 4b similarly to the inclination end surface 11a of the upper side electrode member 1 is shown in FIG. Moreover, in the touch panel of FIG. 9, FIG. 12, the example in which the double-sided tape 4 has the inclination end surface 4b similarly to the inclination end surface 11a of the upper electrode member 1 is shown in FIG. Further, in the touch panel of FIG. 7, an example in which the double-sided tape 4 and the adhesive layer 10 have inclined end surfaces 4 b and 10 a similar to the inclined end surface 11 a of the upper electrode member 1 and the inclined end surface 22 a of the lower electrode member 2 is shown in FIG. 23. Show. Further, in the touch panel of FIG. 11, an example in which the double-sided tape 4 and the adhesive layer 10 have inclined end surfaces 4 b and 10 a similar to the inclined end surface 11 a of the upper electrode member 1 and the inclined end surface 22 a of the lower electrode member 2 is shown in FIG. 24. Show. Thus, the double-sided tape 4 and / or the adhesive layer 10 has the inclined end surfaces 4b and / or 10a similarly to the inclined end surface 11a of the upper electrode member 1 and / or the inclined end surface 22a of the lower electrode member 2, The transparent insulating film does not peel off during handling operations or rack storage, and the effects of the present invention such as a small number of machine stops can be achieved more reliably during rack storage by a machine. Furthermore, as described above, the entire periphery of the touch panel is configured to have the inclined end surfaces 11a and / or 22a, so that the inclined end surfaces 4b and / or 10a are further provided in addition to the inclined end surfaces 11a and / or 22a. By comprising so that the effect of this invention can be show | played more reliably in the perimeter of a touch panel. As a result, even if the inclined end surface of the adhesive layer exists in the receding portion 9, the adhesive layer is more flexible than the upper electrode member 1 and the lower electrode member 2. Is not obstructed by hitting the end of the glass plate 21 or 5 against the retreating portion 9 provided on the upper surface.

  Moreover, the end surface of the adhesive layer (adhesive layer 10 or double-sided tape 4) used for adhesion between the upper electrode member and the lower electrode member or adhesion between the lower electrode member and the transparent support plate is the upper electrode member or lower electrode. When tilted in the same manner as the tilted end surface of the member, by passing the touch panel 8 between the rolls of the dust removing roller 100 (see FIG. 18), not only the dust adhered to the front and back surfaces of the touch panel 8 but also the adhesive layer There is an advantage that dust adhered firmly to the end face by the adhesive force can be removed. This is because the end surface of the adhesive layer has the inclination as described above, so that the end surface of the adhesive layer can be brought into contact with the roll during insertion between the rolls. In addition, the dust adhering to the inclined end surface of the film can be removed for the same reason.

  Using a PET film having a thickness of 185 μm and an upwardly inclined end face (inclination angle 60) on the entire periphery, an ITO film having a thickness of 15 nm is formed on the upper surface by sputtering, and the peripheral portion of the ITO film is removed. A transparent electrode was used. Subsequently, the upper electrode member which formed the bus bar and the lead wire of two parallel sides of a transparent electrode by screen printing using silver paste was obtained. A soda glass plate having a thickness of 0.7 mm was used to obtain a lower electrode member in the same manner as the upper electrode member. Next, both electrode members were arranged to face each other through an air layer between the transparent electrodes, and both were adhered with a double-sided tape having a notch at the peripheral edge portion to obtain a touch panel body (50 mm in each layer × 40 mm in width). Finally, the end of a flexible printed wiring board (FPC) is inserted as a connector into the notch of the double-sided tape on the touch panel body, and is thermocompression-bonded with a thermocompression bonding machine using an anisotropic conductive adhesive. A touch panel was obtained.

  In the touch panels obtained in this way, since the transparent insulating film has an upward inclined end surface, the transparent insulating film does not peel off during handling work or rack storage, and also when the rack is stored by a machine. The number of machine stops was small.

  Using a PET film having a thickness of 185 μm and an upwardly inclined end face (inclination angle 60) on the entire periphery, an ITO film having a thickness of 15 nm is formed on the upper surface by sputtering, and the peripheral portion of the ITO film is removed. A transparent electrode was used. Subsequently, the upper electrode member which formed the bus bar and the lead wire of two parallel sides of a transparent electrode by screen printing using silver paste was obtained. A lower electrode member was obtained in the same manner as the upper electrode member, using a PET film having a thickness of 125 μm and an upward inclined end face (inclination angle 60) around the entire periphery. Next, both electrode members are arranged to face each other through the air layer between the transparent electrodes so that the transparent insulating film of the upper electrode member is disposed only on the transparent insulating film of the lower electrode member, Adhered with double-sided tape with a notch in the part, and a 0.7mm thick soda glass plate as a transparent support plate on the entire lower surface of the lower electrode member with adhesive, and the touch panel body (each layer length 50mm x width 40 mm). Finally, insert the end of a flexible printed wiring board (FPC) as a connector into the cutout of the double-sided tape on the touch panel body, and thermocompression with an anisotropic conductive adhesive using a thermocompression bonding machine. A touch panel was obtained.

  In the touch panels obtained in this way, since the transparent insulating film has an upward inclined end surface, the transparent insulating film does not peel off during handling work or rack storage, and also when the rack is stored by a machine. The number of machine stops was small.

  By reducing the vertical and horizontal dimensions of the transparent insulating film of the upper electrode member to 49.85 mm vertically and 39.85 mm horizontally, the receding portion is retracted 0.15 mm inside the glass plate of the lower electrode member in the entire periphery. It was the same as Example 1 except having provided.

  In the touch panels obtained in this manner, the transparent insulating film has an upward inclined end surface, so that the transparent insulating film does not peel off during handling work or rack storage, and also when the rack is stored by a machine. The number of machine stops was small. Further, since the film material was retreated inward and provided with a retreating portion, the workability of inserting the connector was good, and the peeling prevention property during the handling work was more excellent.

By making the vertical and horizontal dimensions of the transparent insulating film of the lower electrode member as small as 49.85 mm and 39.85 mm in width, the retreated portion is moved back 0.15 mm from the transparent support plate made of the glass plate in the entire periphery. The procedure was the same as in Example 2 except that it was provided.

  In the touch panels obtained in this way, since the transparent insulating film has an upward inclined end surface, the transparent insulating film does not peel off during handling work or rack storage, and also when the rack is stored by a machine. The number of machine stops was small. Further, since the film material was retracted inward and provided with a retracted portion, the workability of inserting the connector was good, and the peel prevention property during the handling work was more excellent.

It is sectional drawing which shows the touchscreen of the film / glass structure which concerns on 1st Embodiment of this invention. It is sectional drawing which shows the touchscreen of the film / film structure which concerns on 2nd Embodiment of this invention. It is the figure explaining the effect at the time of handling about the touch panel of FIG. It is the figure explaining the effect at the time of rack accommodation about the touch panel of FIG. It is the figure explaining the inclined end surface of the touch panel of this invention. It is sectional drawing which shows the touchscreen of the film / glass structure which concerns on 1st Embodiment of this invention. It is sectional drawing which shows the touchscreen of the film / film structure which concerns on 2nd Embodiment of this invention. It is a figure explaining attachment of the connector of a touch panel. It is a figure explaining the effect at the time of connector insertion about a touch panel. It is a figure explaining the problem at the time of connector insertion. It is the figure explaining the effect at the time of connector insertion about the touch panel of FIG. It is the figure explaining the effect at the time of handling about the touch panel of FIG. It is sectional drawing which shows an example of the touchscreen of the conventional film / glass structure. It is a figure explaining the problem at the time of handling in a prior art. It is the perspective view explaining the rack accommodation of the touch panel. It is a figure explaining the problem at the time of rack accommodation in a prior art. It is sectional drawing which shows an example of the touchscreen of the conventional film / film structure. It is a figure which shows an example of the dust attached to the touch panel. In the touch panel of FIG.1, FIG.3, FIG.4, it is a partially expanded sectional view of the example in which a double-sided tape has an inclined end surface similarly to the inclined end surface of an upper side electrode member. FIG. 3 is a partially enlarged cross-sectional view of an example in which the double-sided tape and the adhesive layer have an inclined end surface similar to the inclined end surface of the upper electrode member and the inclined end surface of the lower electrode member in the touch panel of FIG. 2. FIG. 7 is a partially enlarged cross-sectional view of an example in which the double-sided tape has an inclined end surface similar to the inclined end surface of the upper electrode member in the touch panel of FIG. 6. In the touch panel of FIG. 9, FIG. 12, it is a partially expanded sectional view of the example in which a double-sided tape has an inclined end surface similarly to the inclined end surface of an upper electrode member. FIG. 8 is a partially enlarged cross-sectional view of an example in which the double-sided tape and the adhesive layer have an inclined end surface similar to the inclined end surface of the upper electrode member and the inclined end surface of the lower electrode member in the touch panel of FIG. 7. FIG. 12 is a partially enlarged cross-sectional view of an example in which the double-sided tape and the adhesive layer have an inclined end surface similar to the inclined end surface of the upper electrode member and the inclined end surface of the lower electrode member in the touch panel of FIG. 11.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Upper electrode member 11 Transparent insulating film 11a Inclined end surface 2 Lower electrode member 21 Glass plate 22 Transparent insulating film 22a Inclined end surface 3 Dot-shaped spacer 4 Double-sided tape 4a Notch part 5 Glass plate (transparent support plate)
6 Finger 7 Rack 7a Shelf 7b Groove 8 Touch panel 8A Touch panel 81 Touch panel body 82 Connector 9 Retraction part 10 Adhesive layer 100 Dust removal roller 101 Upper electrode member 102 Lower electrode member 103 Dot spacer 104 Double-sided tape 105 Glass plate (transparent support plate )
108 Touch Panel 110 Adhesive Layer 111 Transparent Insulating Film 121 Glass Plate 122 Transparent Insulating Film

Claims (6)

An upper electrode member having a transparent electrode on the lower surface of the transparent insulating film, and a lower electrode member having a transparent electrode on the upper surface of the glass plate, wherein the transparent insulating film of the upper electrode member is from the bottom to the top in the entire periphery. A touch panel having an inclined end surface inclined inward as it goes. An upper electrode member having a transparent electrode on the lower surface of the transparent insulating film, a lower electrode member having a transparent electrode on the upper surface of the transparent insulating film, and a transparent support plate of a glass plate adhered to the entire lower surface of the lower electrode member And the transparent insulating film of the upper electrode member and the transparent insulating film of the lower electrode member each have an inclined end surface inclined inwardly from the bottom toward the top, and the upper side. The touch panel in which the transparent insulating film of the electrode member is disposed on an upper surface excluding the inclined end surface of the transparent insulating film of the lower electrode member. 2. The touch panel according to claim 1, wherein a retreating portion is formed in which the end surface of the entire periphery of the transparent insulating film of the upper electrode member recedes inward from the end surface of the entire periphery of the glass plate of the lower electrode member. The touch panel as set forth in claim 2, wherein a retreating portion is formed in which the end surface of the lower electrode member on the entire periphery of the transparent insulating film is retracted inward from the end surface of the entire periphery of the transparent support plate of the glass plate. The touch panel according to claim 3, wherein a width (d) of the receding portion is in a range of 0.1 to 1.5 mm. The acute angle θ between the normal line of the inclined end surface and the vertical axis is 35 to 75. The touch panel according to any one of claims 1 to 5, wherein the touch panel is in the range.

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