WO2004061640A1 - 狭額縁タッチパネル - Google Patents
狭額縁タッチパネル Download PDFInfo
- Publication number
- WO2004061640A1 WO2004061640A1 PCT/JP2003/015768 JP0315768W WO2004061640A1 WO 2004061640 A1 WO2004061640 A1 WO 2004061640A1 JP 0315768 W JP0315768 W JP 0315768W WO 2004061640 A1 WO2004061640 A1 WO 2004061640A1
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- WO
- WIPO (PCT)
- Prior art keywords
- electrode member
- touch panel
- thin metal
- transparent
- external terminal
- Prior art date
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/045—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
Definitions
- the present invention is arranged on a display screen such as an LCD (liquid crystal display) or a CRT (cathode ray tube) connected to a computer, and is pressed from above with a finger or a pen according to an instruction displayed on the see-through display screen.
- the present invention relates to an analog-resistive touch panel capable of inputting the position of a pressed portion on a display screen to a computer.
- PDA Personal Digital Assistant
- an analog resistive touch panel as a touch panel used for an electronic organizer or a personal computer.
- a transparent electrode 422 is provided on a part of the upper surface of the transparent insulating base material 421, and a pair of bus bars 423, 424 and a transparent electrode 422 are provided on two parallel sides of the transparent electrode 422.
- a lower electrode member 402 having routing circuits 425 and 426 for connecting the busbars 42 3 and 424 and external terminals to other portions, and a part of the lower surface of the transparent insulating base material 41 1 having flexibility.
- a pair of bus bars 413, 414 are provided on two parallel sides of the transparent electrode 412, and routing circuits 415, 416 for connecting the bus bars 413, 414 and external terminals to portions other than the transparent electrode 412, respectively.
- the upper electrode member 401 is opposed to the upper electrode member 401 via an insulating spacer 403 so that the bus bars 413, 414, 423, and 424 are arranged in a rectangular shape, and are bonded at the peripheral edge.
- the other ends of the routing circuits 415, 416, 425, and 426 are combined on one side of the touch panel, and are connected to the end of the film connector 407.
- the principle of the analog resistive film type transparent touch panel is that an arbitrary point P is pressed from above the upper electrode member 401 with a finger or a pen and the two transparent electrodes 412 are pressed.
- the point P at point 422 is brought into point contact, by applying a voltage to the transparent electrode 412 of the upper electrode member 401 and not applying a voltage to the transparent electrode 422 of the lower electrode member 402, the upper electrode member 401 the transparent electrode 412 and the potential gradient is generated in the X direction, the voltage e x obtained by dividing the point P on the transparent electrode 412 of the upper electrode member 401 occurs, the voltage e x in this divided output of the lower electrode member 402 Detected from end 405.
- the coordinates of the point P are (x, y), and the bus bar 41 of the transparent electrode 412 of the upper electrode member 401
- the distance between 3 and 414 is 1 ⁇ and the voltage between busbars 413 and 414 is E, then e The relationship, as possible out to determine the X-coordinate of the point P from the voltage e x. Further, by applying a voltage to the transparent electrode 422 of the lower electrode member 402 and not applying a voltage to the transparent electrode 412 of the upper electrode member 401, the point P on the transparent electrode 422 of the lower electrode member 402 is A divided voltage e y is generated, and this voltage e y is detected from the divided voltage output terminal 404 of the transparent electrode 412 of the lower electrode member 401.
- the wiring of the bus bar and the routing circuit be formed so as to be within a slightly narrow frame area from the edge of the panel. ing.
- the touch position when a constant voltage is applied to the touch panel is determined by the voltage e in the X direction and the voltage e y in the Y direction detected at the divided voltage output terminal as described above. Even in the same case, if the bus pars 413, 414, 423, and 424 have resistance, the X coordinate of the detected position will be near the connection with the routing circuits 415, 416, 425, and 426 (a in Fig. 9). And distant places ( Figure And b) of 9 will not be exactly the same.
- the pass bars 4 1 3, 4 1 4, 4 2 3, 4 2 4 have a large resistance due to being composed of conductive paste material, and this resistance is the bus bar 4 1 3, 4 1 4, 4 2 3, When 4 2 4 is made thinner, it becomes even larger, and the location near (a in Fig. 9) and the location far from the connection with the routing circuits 4 15, 4 16, 4 25, and 4 26 (
- the difference in position detection is more noticeable with b) in 9).
- the difference in position detection will not be noticeable, but it will not be possible to obtain a touch panel with a narrow frame.
- a specific calibration is performed so that the touch position of the touch panel and the display position of the LCD obtained by detecting the touch panel can be seen overlapping.
- Tatsuchi position when applying a constant voltage to Tatsuchipaneru is determined by the voltage e y of the voltage e x and Y direction of the X-direction detected by the divided voltage output terminal as described above, resistance of the transparent electrode with time If the temperature changes due to environmental or environmental temperature, the detected voltage will change, causing the LCD display position to shift.
- the pass bar and the routing circuit have a large resistance due to the conductive paste material, and the larger the wiring resistance, the more the displacement of the transparent electrode when the resistance changes over time or due to environmental temperature. large.
- the input position is determined by dividing the constant voltage E, but to be precise, since the constant voltage E includes the wiring resistance and becomes the voltage E 'in the bus bar, the voltage E' is divided And the input position is determined. Therefore, if the wiring resistance does not change over time or due to the environmental temperature and the resistance of the transparent electrode changes over time or due to the environmental temperature, the larger the wiring resistance is, the more the resistance of the transparent electrode changes over time or the higher the environmental temperature. The change of E 'due to the change becomes large, and the positional deviation between the touch position of the touch panel and the display position of the LCD becomes large and noticeable. If the bus wrapper and the routing circuit are formed thicker, the positional deviation between the touch position of the touch panel and the display position of the LCD is inconspicuous, but a touch panel with a narrow frame cannot be obtained.
- the conventional touch panel has a limitation on a narrow frame, and a large touch panel. Since the wiring resistance increases due to the length of the bus bar and the bow I winding circuit, it is difficult to narrow the frame.
- the wiring of the bus bar and the routing circuit be formed using only a metal material as a constituent material (Japanese Patent Application Laid-Open No. 2001-221). See Japanese Patent Application Publication No. 6900) Specifically, it is composed of a metal material consisting only of gold, silver, copper, nickel, etc., formed by the electroplating method, vacuum deposition method, sputtering method, ion plating method, CVD method, etc. .
- a bus bar and a wiring circuit formed using only a metal material as a constituent material are formed by an electroplating method, a vacuum evaporation method, a sputtering method, an ion plating method, or the like. It is formed by the coating method or the CVD method. Except for the electroplating method, it is a forming means that removes unnecessary parts as a bus bar and a wiring circuit after forming a metal thin film over the entire surface, so the removed metal material is wasted and the touch panel manufacturing cost is high. There was a problem. In addition, in the electroplating method, since the entire surface is immersed in a plating bath, there is a possibility that stains may occur in a transparent input area even after washing with water, resulting in a problem in yield.
- the bus bar and the wiring circuit are thin films formed by an electroplating method, a vacuum evaporation method, a sputtering method, an ion plating method, a CVD method, or the like, the cross-sectional area of the bus bar and the wiring circuit is small. It was greatly affected by the width of the routing circuit. Therefore, when the frame is narrowed, the cross-sectional area of the bus bar and the routing circuit is reduced, that is, the resistance is increased, and an error in position detection is likely to occur in the touch panel. The difference in position detection is inconspicuous if the busbar and the routing circuit are formed thicker, but it takes a very long time to form a thick film of 30 ⁇ or more by each of the above thin film forming methods.
- the present invention is configured as follows to achieve the above object.
- a lower transparent electrode is provided on a part of the upper surface of the lower transparent insulating base material, and a pair of lower bus bars is provided on two parallel sides of the lower transparent electrode;
- a lower electrode member having a lower external terminal connection portion connected to the lower bus bar in a portion other than the side transparent electrode,
- An upper transparent electrode is provided on a part of the lower surface of the upper transparent insulating base material having flexibility, and a pair of upper bus bars is provided on two parallel sides of the upper transparent electrode, and the upper bus bar is provided on a portion other than the upper transparent electrode.
- an upper electrode member having an upper external terminal connection portion connected to the upper electrode member.
- the lower electrode member and the upper electrode member are opposed to each other via an insulating spacer so that the upper bus par and the lower bus bar are arranged in a square shape, and are bonded to the peripheral edge by V.
- a narrow frame in which the lower busbar is formed of a thin metal wire having a wire diameter of 30 to L00 m, and the upper busbar is formed of a thin metal wire having a wire diameter of 30 to L00 / zm. Provide touch panels.
- the lower electrode member further includes a lower routing circuit for connecting the lower bus bar and the lower external terminal connection portion to a portion other than the lower transparent electrode.
- the upper electrode member further includes an upper routing circuit that connects the upper pass bar and the upper external terminal connection portion to a portion other than the upper transparent electrode,
- the lower routing circuit is formed by a fine metal wire having a wire diameter of 30 to 100 ⁇ m
- the upper routing circuit is formed by a fine metal wire having a wire diameter of 30 to 100 ⁇ m.
- a narrow frame touch panel according to the first aspect is provided.
- the lower routing circuit and the upper routing circuit The narrow picture frame according to the second aspect, wherein the thin metal wires that are respectively configured are extended to the outside of the lower electrode member and the upper electrode member to form the lower external terminal connection portion and the upper external terminal connection portion. Play Tatsuno Panel.
- the lower bus bar is directly connected to the lower external terminal connection portion, and the lower bus bar and the lower external terminal connection portion are connected to each other with a wire diameter of 30 to 1.
- the upper bus bar is directly connected to the upper external terminal connection portion, and the upper bus bar and the upper external terminal connection portion have a wire diameter of 30 to L.
- the lower electrode member and the upper electrode are formed of a 0 ⁇ m thin metal wire, and the thin metal wire of the upper external terminal connection portion and the thin metal wire of the lower external terminal connection portion are formed by the lower electrode member and the upper electrode.
- the thin metal wire is formed by interposing a conductive paste between the upper transparent insulating base material and the lower transparent insulating substrate.
- each of the fine metal wires is covered with a conductive paste to form the upper transparent insulating base material and the lower electrode member.
- the lower coating layer formed by being covered with the conductive paste on at least one of the bent portion of the lower wiring circuit of the lower electrode member and the lower bus bar is
- the lower coating layer which has a width of 2 to 5 times the diameter of the thin metal wire of the lower electrode member and is covered with the conductive paste in other portions, is formed of the lower electrode member. And has a width of 1 to 5 times the diameter of the thin metal wire, and is formed by being covered with the conductive paste on at least one of the bent portion of the upper wiring circuit of the upper electrode member and the upper bus bar.
- the upper coating layer has a width of 3 to 5 times the diameter of the fine metal wire of the upper electrode member, and the upper coating layer formed by being coated with the conductive paste in other portions is Having a 2-5 times the width of the diameter of the metal thin wires of the upper electrode member And a narrow frame touch panel according to the sixth aspect.
- the metal thin lines provide a narrower frame Tatsuchipaneru according to any one aspect of the first through 4, which is a specific resistance 2 0 x 1 0- 6 ⁇ ⁇ cm or less under .
- the metal thin wires and the surrounding on the transparent insulation ⁇ material, to the eighth aspect of which is coated with specific resistance LXL 0 one 4 Omega ⁇ cm or less conductive paste A narrow framed touch panel as described.
- FIG. 1 is an exploded perspective view showing a touch panel of an analog resistance film type according to the first embodiment of the present invention
- FIG. 2 is a partial cross-sectional view showing a fixed state of thin metal wires in an analog resistive touch panel according to the first embodiment of the present invention.
- FIG. 3 is a partial cross-sectional view showing a fixed state of a thin metal wire in a touch panel of an analog resistance film type according to the first embodiment of the present invention.
- FIG. 4 is a partial cross-sectional view showing a fixed state of fine metal / metal on the analog resistive touch panel according to the first embodiment of the present invention.
- FIG. 5 is a partial cross-sectional view showing a fixed state of a thin metal wire in a touch panel of an analog resistance film type according to the first embodiment of the present invention.
- FIG. 6 is a partial cross-sectional view showing a fixed state of thin metal wires in an analog resistive touch panel according to the first embodiment of the present invention.
- FIG. 7 is a partial cross-sectional view showing a fixed state of a thin metal wire in the touch panel of the analog resistance film type according to the first embodiment of the present invention.
- FIG. 8 is a partial cross-sectional view showing a fixed state of thin metal wires in the analog resistive touch panel according to the first embodiment of the present invention.
- FIG. 9 is an exploded perspective view showing an example of an analog resistive touch panel according to the related art.
- FIG. 10 shows the principle of the analog resistive touch panel.
- FIG. 11 is an exploded perspective view showing a touch panel according to the second embodiment of the present invention
- FIG. 12 is a perspective view showing the arrangement of the extended portions of the thin metal wires in FIG.
- FIG. 14 is an exploded perspective view showing a touch panel according to the second embodiment of the present invention.
- FIG. 14 is a perspective view showing an arrangement of an extended portion of a thin metal wire in FIG. 13;
- 15B is a partial sectional view and a detailed sectional view showing the touch panel according to the second embodiment of the present invention,
- FIG. 16 is an exploded perspective view showing an example of the touch panel according to the related art.
- FIG. 17 is a perspective view of the touch panel according to the first and second embodiments of the present invention.
- FIG. 5 is a cross-sectional view showing an allowable range of a bending portion of a coating layer formation width (contact width with a fixed surface) of a conductive paste,
- FIG. 18 is an explanatory diagram in which the straight line portion is formed in a relatively narrow width as compared with the bent portion in FIG.
- FIG. 19 is a perspective view of a touch panel according to a modification of the first embodiment of the present invention.
- FIG. 20 is a plan view of an upper electrode member of the touch panel according to a modification of the first embodiment of the present invention of FIG. 19,
- FIG. 21 is a plan view of the lower electrode member of the touch panel according to the modification of the first embodiment of the present invention shown in FIG. BEST MODE FOR CARRYING OUT THE INVENTION
- the narrow frame touch panel is a wiring area on the transparent insulating base material above and below the touch panel, around which the bus bar, the routing circuit, and the external terminal connection portion are formed. It means a region whose dimension is formed to be 2 mm or less on at least three sides.
- the touch panel shown in FIG. 1 has a lower transparent electrode 22 on a part of the upper surface of a lower transparent insulating base 21 and a pair of lower transparent electrodes 22 arranged on two parallel sides.
- Bottom external terminal connection parts 303 and 304 which are arranged in other parts and are connected to the lower wiring circuits 25 and 26 and can connect the lower wiring circuits 25 and 26 and external terminals respectively.
- the upper electrode member 1 having the terminal connection portions 301 and 302 is opposed to each other via the insulating spacer 3 so that the upper and lower bus bars 13, 14, 23 and 24 are arranged in a square,
- the upper and lower busbars 13, 14, 23, 24 and the upper and lower routing circuits 15, 16, 25, 26 have a wire diameter of 30 to : L 00 Aim
- the two thin metal wires 8 of the lower routing circuits 25 and 26 extend from the upper right corner of the lower electrode member 2 of FIG.
- the upper electrode member 1 extends the two thin metal wires 8 of the upper routing circuits 15 and 16 from approximately the center of the upper side of the upper electrode member 1 in FIG. So that the upper external terminal connection portions 301 and 302 are provided.
- the lower transparent insulating base material 21 used for the lower electrode member 2 may be a glass plate such as soda glass, borosilicate glass, or tempered glass, or a polycarbonate-based, polyamide-based, or polyetherketone-based material.
- a transparent resin plate or a transparent film of an engineering plastic, an acrylic, a polyethylene terephthalate, or a polybutylene terephthalate can be used.
- the lower transparent insulating base material 21 used for the lower electrode member 2 includes a transparent film and a transparent substrate. It may be a laminate with a plastic plate. This case is preferable because the durability of the entire touch panel is improved.
- the flexible upper transparent insulating base material 11 used for the upper electrode member engineering plastics such as polycarbonate, polyamide, or polyetherketone, acrylic, and polyethylene terephthalate are used. Or, a transparent film such as polybutylene terephthalate can be used.
- a hard coat layer can be formed on a surface of the upper electrode member 1 opposite to the surface on which the upper transparent electrode 12 of the upper transparent insulating substrate 11 is provided.
- the hard coat layer includes an inorganic material such as a siloxane-based resin, or an organic material such as an acrylic epoxy-based or urethane-based thermosetting resin, or an acrylate-based photocurable resin.
- the appropriate thickness of the hard coat layer is about l to 7 xl 0 to 3 mm.
- the upper transparent insulating base material 11 of the upper electrode member 1 can be subjected to a non-glare treatment on the surface opposite to the surface on which the upper transparent electrode 12 is provided in order to prevent light reflection. For example, it is good to carry out unevenness processing, or to mix an extra pigment such as an extender, silica, or alumina into the hard coat layer.
- the upper transparent insulating base material 11 of the upper electrode member 1 can be a laminated body in which a plurality of films are stacked instead of a single film.
- the upper and lower transparent electrodes 12 and 22 are made of a metal oxide film such as tin oxide, thidium indium oxide, antimony oxide, zinc oxide, oxide oxide, or indium tin oxide (ITO); It can be formed using a composite film mainly containing an oxide or a metal film of gold, silver, copper, tin, nickel, aluminum, palladium, or the like. Further, the upper and lower transparent electrodes 12 and 22 can be formed as a multilayer film of two or more layers. These transparent conductive films constituting the upper and lower transparent electrodes 12 and 22 can be formed by vacuum evaporation, sputtering, ion plating, CVD, or the like.
- the transparent conductive film can be patterned by a method of performing an etching treatment with an acid or the like to remove unnecessary portions other than the upper and lower transparent electrodes 12 and 22. Also, the portions other than the upper and lower transparent electrodes 12 and 22 on the transparent conductive film may be covered with an insulating film. Further, the surface of either the upper or lower transparent electrode 12 or 22 has a dot-shaped spacer 4 described later. Can be formed.
- a feature of the first embodiment of the present invention is that the upper and lower busbars 13, 14, 23, 24 and the upper and lower routing circuits 15, 16, 25, 26 are connected to each other with a wire diameter of 30 to 100 zm. In other words, they are formed integrally with the thin metal wires 8.
- the use of the thin metal wires 8 eliminates the need for patterning, so that the material is not wasted and a cheap touch panel is obtained.
- a touch panel with a high yield can be obtained without causing stains on the area to be perspectively input due to the entire immersion in the plating bath.
- the upper and lower busbars 13, 14, 23, 2.4 and the upper and lower routing circuits 15, 16, 25, 26 ensure a sufficient cross-sectional area,
- the resistance can be kept small so that no error in position detection occurs on the touch panel, and at the same time, the width can be made narrow. Therefore, it is necessary to reduce the space occupied by the upper and lower bus bars 13, 14, 23, 24 and the upper and lower wiring circuits 15, 16, 25, 26 in the peripheral portion of the touch panel, that is, to reduce the frame. it can.
- the thin metal wires 8 extend to the outside of the upper electrode member 1 and the lower electrode member 2.
- the upper and lower external terminal connection portions 301, 302, 303, and 304 can be provided to eliminate the necessity of using a film connector. Therefore, there is no need to secure a space around the touch panel for inserting and connecting a film connector between the upper electrode member 1 and the lower electrode member 2, thereby enabling a narrower frame. is there.
- the thin metal wire 8 gold, copper, aluminum, or the like can be used.
- the metal wire 8 having a diameter of 30 to 100 ⁇ is used. If the wire diameter is less than 3 O / zm, the cross-sectional area will be small, the wire will be easily broken, and it will be difficult to handle in production, and the touch panel will tend to have errors in position detection. When the wire diameter exceeds 1 ⁇ ⁇ , the gap between the transparent electrodes 12 and 22 increases. Input becomes difficult. .
- the fixing of the thin metal wires 8 on the upper and lower transparent insulating substrates 11 and 21 can be performed by, for example, melting and solidifying the upper and lower transparent insulating substrates 11 and 21 (see FIG. 2). See). Specifically, after arranging the fine metal wires 8 on the upper and lower transparent insulating base materials 11 and 21, heat and pressure are applied by a method such as a hot iron or a hot press, so that the upper and lower transparent insulating substrates 11 and 21 are heated. The surface layer of the base material 11, 21 is softened and fixed by cooling with a part of the fine metal wire 8 embedded.
- the lower electrode member 2 is limited to a case where the material of the lower transparent insulating base material 21 of the lower electrode member 2 is a resin material.
- the metal thin wire 8 is fixed by using the metal thin wire 8 whose outer peripheral surface is covered with a conductive hot melt material 91, and by melting and solidifying the hot menoleto material 91, the metal thin wire is transparently formed on the upper and lower sides. It can also be fixed on insulating substrates 11 and 21 (see Fig. 3). Specifically, after arranging the thin metal wires 8 covered with the conductive hot-melt material 91 on the upper and lower transparent insulating base materials 11 and 21, the metal thin wires 8 are pressed while being heated. The hot menoret material 91 is softened by applying heat and pressure by a method such as heating, and the thin metal wire 8 is fixed by the adhesive force of the hot melt material 91 by cooling.
- the conductive hot melt material 91 include an adhesive obtained by dispersing particles of gold, silver, nickel, or the like in synthetic rubber such as black hole preform, tin, lead, or alloy of tin and lead. Etc. can be used.
- the fixing of the thin metal wires 8 can also be performed by interposing a conductive paste 92 between the thin metal wires 8 and the upper and lower transparent insulating substrates 11 and 21 (see FIG. 4).
- a thermosetting resin such as an epoxy resin, a phenol resin, an acryl resin, a urethane resin, or a silicone resin ⁇ polyamide, or polyethylene, polystyrene, polyester, polyurethane, ethylene monovinyl acetate, etc.
- a resin in which a conductive filler is contained in a thermoplastic resin such as a coalesced or ethylene-ethyl acrylate copolymer is used.
- the conductive filler examples include conductive metal powders such as silver, gold, copper, nickel, platinum, and palladium, and inorganic insulators such as alumina or glass as a core material, or polyethylene, polystyrene, or The core material surface is coated with a conductive layer such as gold or nickel using an organic polymer such as divinylbenzene, carbon, or Graphite and the like.
- the conductive “raw film” may be in the form of a flake, a sphere, a short fiber, or the like.
- a method of coating on the insulating base materials 11 and 21 a method such as screen printing or direct application by a dispenser can be used.
- the above-mentioned thin metal wire 8 may be fixed by coating the upper and lower transparent insulating base materials 11 and 21 on and around the thin metal wire 8 with an adhesive 93 (see FIG. 5). .
- screen printing or direct application using a dispenser is performed on the fine metal I spring 8 and the surrounding area.
- the upper and lower transparent insulating base materials 11 and 21 are coated, and the thin metal wires 8 are sandwiched and fixed between the upper and lower transparent insulating base materials 11 and 21 and the adhesive 93.
- the adhesive 93 an epoxy resin, an acrylate resin, or the like can be used.
- the coating with the adhesive 93 is combined.
- the adhesive force of the fine metal wires 8 on the upper and lower transparent insulating substrates 11 and 21 may be improved (see FIGS. 6 to 8).
- the upper and lower transparent insulating substrates 11 and 21 are mainly in line contact with each other, whereas if the conductive paste described above is used as the adhesive 93, However, the upper and lower transparent insulating substrates 11 and 21 are in surface contact, and the electrical connection resistance is smaller than in the case where only the thin metal wire 8 is used, so that the conductivity can be further improved.
- the conductive paste covering it acts as an auxiliary conductive material, so that there is an effect that malfunction does not occur.
- the fixing of the thin metal wires 8 on the upper and lower transparent insulating substrates 11 and 21 is performed by the upper and lower buspers 13, 14, 23 and 24 and the upper and lower routing circuits 15, 16 and 25. , 26 need not be fixed, but may be partial as long as conduction and sufficient fixing can be achieved.
- 2 to 8 show the upper and lower routing circuits 15, 16, It is a cross-sectional view of the parts 25 and 26.
- the upper and lower bus bars 13, 14, 23 and 24 have upper and lower transparent electrodes 12 and 22, respectively.
- the spacer 3 is formed in a form that can insulate a bus bar that is squarely arranged between the upper and lower electrode members, for example, a frame form as shown in FIG.
- a spacer is formed by printing or applying an appropriate resin such as a strong acrylic resin, an epoxy resin, or a silicone resin such as a resin film similar to the transparent insulating base material. Force that can form the support 3 In general, it is often used also as a frame-shaped double-sided tape for fixing the upper electrode member 1 and the lower electrode member 2, or an adhesive layer made of an adhesive or an adhesive. When forming an adhesive layer made of an adhesive or a pressure-sensitive adhesive, a screen mark ⁇ or the like is used.
- the upper and lower transparent electrodes 1 and 2 are provided to secure a space between the upper and lower transparent electrodes 12 and 22 of the upper electrode member 1 and the lower electrode member 2.
- a dot-shaped spacer 4 can also be formed on either one of the surfaces (see FIG. 1). Examples of the dot-shaped spacer 4 include acrylate resins such as melamine acrylate resin, urethane acrylate resin, epoxy acrylate resin, methacrylate acrylate resin, acryl acrylate resin, and polyvinyl alcohol resin. Or the like can be obtained by forming a transparent photocurable resin into fine dots by a photo process. A large number of fine dots can be formed by a printing method to form a spacer. Also, a spacer can be obtained by spraying or applying a dispersion of particles made of an inorganic substance or an organic substance, followed by drying.
- the narrow frame touch panel according to the first embodiment of the present invention has the above-described configuration and operation, and has the following effects.
- the upper and lower bus bars and the upper and lower routing circuits are integrally formed by a thin metal wire having a wire diameter of 30 to L00 / m.
- a thin metal wire having a wire diameter of 30 to L00 / m.
- the upper and lower busbars and the upper and lower routing circuits ensure a sufficient cross-sectional area, that is, reduce the resistance so that an error in position detection does not occur on the touch panel.
- the width can be made narrower while suppressing it. Therefore, it is possible to reduce the formation areas of the upper and lower bus bars and the upper and lower routing circuits in the peripheral portion of the touch panel, that is, to narrow the frame. In this case, it takes no time to form the upper and lower bus bars and the upper and lower routing circuits having a large cross-sectional area, and the production efficiency is excellent.
- the narrow frame touch panel according to the first embodiment of the present invention is configured such that the upper and lower routing circuits are formed by thin metal wires, and the thin metal wires are formed between the upper electrode member and the lower electrode member. It can be extended to the outside and used as upper and lower external terminal connection parts, eliminating the need for film connectors. Therefore, there is no need to secure a space around the touch panel for inserting and connecting the film connector between the upper electrode member and the lower electrode member, and the frame can be made narrower. . Further, since the narrow frame touch panel of the first embodiment of the present invention does not require a film connector, uniform adhesive strength can be obtained over the entire periphery of the peripheral portion of the touch panel. Therefore, even when the touch panel is subjected to a high-temperature test or the like, a problem such as a local distortion and a wavy upper electrode member does not occur.
- the narrow frame touch panel according to the second embodiment of the present invention is different from the first embodiment in the arrangement shape of the thin metal wires in the narrow frame touch panel having a wide input area and display screen.
- a transparent insulating substrate 5 11 has a transparent electrode 5 12 on a part of the lower surface thereof, and a pair of bus bars 5 1 formed on the transparent electrode 5 12. 3, 5 and 14 and the upper side having a wiring circuit 5 15 and 5 16 formed on a portion other than the transparent electrode 5 12 so as to connect the bus bar 5 13 and 5 14 to an external terminal, respectively.
- a transparent electrode 522 is provided on a part of the surface, and a pair of busbars 523, 524 formed on the transparent electrode 522 and portions other than the transparent electrode 522 are connected to connect the busbars 523, 524 to external terminals.
- the lower electrode member 5 ° 2 having the routing circuits 525, 526 formed is opposed to each other via the spacer 3 so that the bus bars 513, 514, 523, 524 are arranged in a square shape. Glued.
- the other ends of the routing circuits 515, 516, 525, and 526 are combined on one side of the touch panel and connected to an end of the film connector 505.
- the wiring of the bus bar and the routing circuit be formed so as to be within a slightly narrow frame area from the edge of the panel. (See Japanese Patent Application Laid-Open No. 2001-216090).
- the bus bars 513, 514, 523, 524 and the routing circuits 515, 516, 525, 526 disperse a conductive filler such as a metal such as gold, silver, copper, or nickel, or carbon in the resin binder. Since the conductive paste is screen printed, the circuit resistance is high. If the line width is reduced to reduce the frame width, the circuit resistance will increase. In addition, when the line width is reduced, it is difficult to print with a uniform film thickness, and the print is blurred. This large circuit resistance and blurring cause a decrease in the input accuracy of the touch panel. For this reason, we have devised to use conductive paste with low resistance, but at present the specific resistance value is about 30 ⁇ 10 6 ⁇ ⁇ cm.
- a film connector 505 is used to connect the busbars 513, 514, 523, 524 to external terminals, and a routing circuit 515, 516 is provided between the busbars 513, 514, 523, 524 and the film connector 505. , 525 and 526, the following problems also occurred. That is, the film connector 505 and the routing circuits 515, 516, 525, and 526 are often connected together on one side of the touch panel. In this case, the routing circuit 525 and the bus bar 524 are connected in parallel on the same surface. It is formed. In other words, in order to obtain the same frame width as the other sides, it is necessary to form each line width even thinner. This further increases the decrease in input accuracy described above.
- connection between the wiring circuits 515, 516, 525, 526 and the film connector 505 is conventionally bonded via an anisotropic conductive adhesive, but a large bonding area is required to secure the bonding strength. And Therefore, it is difficult to make the side of the connection portion with the finolem connector 505 a narrow frame.
- an object of the second embodiment of the present invention is to solve the above-mentioned problems and to provide a narrow-frame touch panel which has high input accuracy and can narrow the frame on all four sides.
- the touch panel shown in FIGS. 11 and 13 has an upper transparent electrode 12 on a part of the lower surface of the upper transparent insulating base material 11 and has a pair of upper bus bars 13 and 14 formed on the upper transparent electrode 12.
- a lower side having an upper electrode member 1, a lower transparent electrode 22 on a part of the upper surface of the lower transparent insulating base material 21, and a pair of lower bus bars 23, 24 formed on the lower transparent electrode 22.
- the electrode member 2 is opposed via the spacer 3 so that the upper and lower bus bars 13, 14, 23, 24 are arranged in a square shape, and the analog resistive touch panel is bonded at the peripheral edge.
- a feature of the second embodiment of the present invention is that only the upper and lower busbars 13, 14, 23, and 24 (in other words, there is no routing circuit in the second embodiment, and the upper and lower busbars 13, 14) , 23, 24 and upper and lower external terminal connections 313, 314, 323, 324) with a wire diameter of 30 ⁇ ; L 00 ⁇ fine metal wire 113, 1 14, 223,
- the upper and lower external terminal connecting parts 313, 314, 323, 324 are directly extended from one end of 23, 24.
- the thin metal wires 223 and 224 are extended from the lower left corner portion and the upper right corner portion of the lower electrode member 2 of FIG. And 324, and in the upper electrode member 1, the two thin metal wires 113 and 114 are extended from the lower left corner portion and the upper right corner portion of the upper electrode member 1 in FIG. Parts 313, 314 I am trying to.
- the upper transparent electrode 12 and the upper bus bars 13 and 14 are drawn through the upper transparent insulating base material 11.
- the wire diameter of the thin metal wires 113, 114, 223, 224 is less than 30 ⁇ m, the wires are easily broken, and it is difficult to handle in production. Also, when the wire diameter of the thin metal wires 1 1 3, 11, 4, 223, 224 exceeds 100 ⁇ m, the upper and lower transparent electrodes 12,
- the gap between 22 becomes large and input becomes difficult.
- the thin metal wires 113, 114, 223, and 224 may be made of the same metal, or may be two or more alloys. Further, one or more metal layers may be coated with metal or the like around the metal wires 113, 114, 223, 224.
- the cross-sectional shape of the thin metal wires 113, 114, 223, and 224 is not particularly limited to a round shape, a square shape, or an elliptical shape, and may be designed to have a shape that can be appropriately adapted.
- the upper and lower transparent insulating substrates 11, 21 are fixed to the upper and lower transparent insulating substrates 11, 21, respectively. It is preferable to cover the layers 114, 223, 224 and their surroundings with the conductive paste 6 (see FIGS. 15A and 15B). In order to secure the above fixation, cover with a conductive paste 6 having a thickness of 5 ⁇ m or more.
- FIG. 15B is a detailed view of FIG. 15A, and 3 A is an insulating layer for securing insulation between the upper and lower transparent electrodes 12 and 22.
- the thin metal wires 8, 113, 1 14, 223, 224 place the thin metal wires 113, 1, 14, 223, 224 on the upper and lower transparent insulating base materials 11, 21 and then apply the conductive paste 6
- the conductive paste 6 may be coated on the thin metal wires 8, 113, 114, 223, and 224 beforehand, and then placed on the upper and lower transparent insulating substrates 11 and 21. Good.
- the conductive paste 6 has a conductive filler dispersed in a resin binder.
- the resin binder is a resin that joins or bonds specific materials together. In the case of the second embodiment of the present invention, the resin binder joins the conductive fillers 32 and connects the conductive filler 32 to the transparent conductive film surface. It is a joining material for joining on top.
- the resin binder it is possible to use a resin such as an atarinole resin, a urethane resin, an epoxy resin, or a silicone resin, and the curing method is heat curing, solvent evaporation drying, or UV curing. And fix it on the transparent electrode. In particular, in the case of UV curing, curing can be performed almost simultaneously from the coated end, so 1) there is no need to move to an oven after all the coating is completed and cure, simplifying the work,
- the width required for fixing is preferably 50 to 500 m.
- the width is less than 50 / Xm, the adhesion between the thin metal wires 113, 114, 223, 224 and the upper and lower transparent electrodes 12, 22 becomes weaker, and the thin metal wires from the upper and lower transparent electrodes 12, 22 are weakened. 11.3, 114, 223, 224 may peel off. If the width exceeds 500 ⁇ m, the adhesive strength between the peripheral portions of the upper electrode member 1 and the lower electrode member 2 may be weakened and peeled off, and the advantage of the narrow frame is lost.
- the upper and lower external terminal connection portions 313, 314, 323, which are extended portions from the upper ends of the thin metal wires 113, 114, 223, 224 and one end of the lower bus bars 13, 14, 23, 24, are provided. It is desirable that 324 be located closer to the touch panel corner. By designing the extension as close as possible to the touch panel corner, it is possible to narrow the frame and widen the viewable area.
- the upper and lower external terminal connection portions 313, 314, 323, and 324, which are extended portions of the thin metal wires 113, 114, 223, and 224, are arranged at every touch panel touch panel and connected to external terminals. Alternatively, they may be arranged in two opposing corners of the touch panel and connected to external terminals (see FIG. 12).
- the extension of the thin metal wires 113, 114, 223, and 224 should be determined according to the design of the external terminals. Just fine.
- the former has the advantage that the insulation between the thin metal wires can be ensured, and the latter has the advantage that the number of connection terminals to the external terminals can be reduced, that is, the circuit space other than the touch panel can be saved.
- the upper transparent insulating base material 11 used for the upper electrode member 1 is made of engineering plastics such as polycarbonate, polyamide, and polyetherketone, or atarinole, polyethylene terephthalate, or polybutylene terephthalate. A flexible material such as a transparent film can be used. Furthermore, the upper transparent insulating base material 11 of the upper electrode member 1 can be a laminate in which a plurality of films are stacked instead of a single film. Note that a hard coat layer can be formed on a surface of the upper electrode member 1 opposite to the surface on which the upper transparent electrode 12 of the upper transparent insulating substrate 11 is provided.
- the hard coat layer examples include inorganic materials such as siloxane-based resin, and organic materials such as acrylic epoxy-based and urethane-based thermosetting resins and acrylate-based photocurable resins.
- the thickness of the hard coat layer is about 1 ⁇ 7 X 1 0- 3 mm is suitable.
- the upper transparent insulating substrate 11 of the upper electrode member 1 can be subjected to a non-glare treatment on the surface opposite to the surface on which the upper transparent electrode 12 is provided in order to prevent light reflection.
- the surface opposite to the surface on which the upper transparent electrode 12 is provided may be subjected to unevenness processing, or the hard coat layer may be mixed with an extender pigment, fine particles such as silica and alumina.
- the lower transparent insulating substrate 21 used for the lower electrode member 2 a glass plate such as soda glass, borosilicate glass, or tempered glass, or a polycarbonate-based, polyamide-based, or polyetherketone-based material is used. Or a transparent resin plate or film of acrylic, polyethylene terephthalate, polybutylene terephthalate, or the like.
- the lower transparent insulating substrate 21 used for the lower electrode member 2 may be a laminate of a transparent film and a transparent plastic plate or a glass plate. This case is preferable because the durability of the entire touch panel is improved.
- the upper and lower transparent electrodes 12 and 22 are made of a metal oxide film such as tin oxide, indium oxide, antimony oxide, zinc oxide, cadmium oxide, indium tin oxide (ITO), and the like. Composite film mainly composed of gold, silver, copper, tin, Metal, such as metal, aluminum, and palladium. Further, the upper and lower transparent electrodes 12, 22 can be formed as a multilayer film of two or more layers. These transparent conductive films constituting the upper and lower transparent electrodes 12 and 22 can be formed by vacuum deposition, sputtering, ion plating, CVD, or the like. Transparent conductive film is etched with acid etc.! / ⁇ , Patterning can be performed by removing unnecessary portions other than the upper and lower transparent electrodes 12 and 22. Further, portions other than the upper and lower transparent electrodes 12 and 22 on the upper and lower transparent conductive films may be covered with an insulating film.
- a metal oxide film such as tin oxide, indium oxide, antimony oxide, zinc oxide
- the spacer 3 is formed in a form capable of ensuring a gap between the upper and lower transparent electrodes 12 and 22, for example, in a frame form as shown in FIGS. 11 and 13.
- an appropriate resin such as an acryl resin, an epoxy resin, or a silicone resin is printed.
- a coated material can be used, but in general, it is often used as a double-sided tape for bonding the upper electrode member 1 and the lower electrode member 2 at the peripheral portion, and also as an adhesive layer made of an adhesive or an adhesive. .
- the transparent conductive film When forming an adhesive layer made of an adhesive or a pressure-sensitive adhesive, it is necessary to pattern the transparent conductive film and cover the insulating film as described above in order to surely obtain the upper and lower insulation.
- the insulating property is already sufficiently ensured because it has the core material, and the transparent conductive film need not be patterned or covered with the insulating film. That is, it is possible to omit the process and to suppress the production cost.
- the narrow frame touch panel according to the second embodiment of the present invention does not form a circuit in which the thin metal wires are routed.
- the side of the other electrode member that is opposed and bonded is always a flat surface. Therefore, even if the frame is narrow, the adhesiveness is not degraded, and the reliability of the touch panel is increased.
- Dot-shaped spacer 4 can also be formed on either one of the surfaces (see FIGS. 11 and 13).
- Dot-shaped spacers 4 include, for example, melamine Acrylic resin such as tallylate resin, urethane acrylate resin, epoxy acrylate resin, methacryl acrylate resin, or acryl acrylate resin, or transparent photo-curable resin such as polyvinyl alcohol resin is finely divided by photo process. It can be obtained by forming it in a dot shape.
- a large number of fine dots can be formed by a printing method to form a spacer.
- a spacer can also be obtained by spraying or applying a dispersion of particles made of an inorganic substance or an organic substance, followed by drying.
- the touch panel is arranged on a display screen such as an LCD or CRT connected to a computer, and pressed from above with a finger or a pen according to an instruction displayed on the see-through display screen.
- the present invention relates to an analog-to-analog resistive touch panel that allows a user to input the position of a location on a display screen to a computer.
- the narrow frame touch panel panel according to the second embodiment of the present invention has the above-described configuration, and thus has the following effects.
- the narrow frame touch panel according to the second embodiment of the present invention includes only the bus bar (in other words, in the second embodiment, there is no routing circuit, and the upper and lower bus bars are connected to the upper and lower external terminal connecting portions. ) Is formed by a thin metal wire having a wire diameter of 30 to: L00m, and the thin metal wire is directly bonded from one end of the bus bar to the outside of the bonded upper electrode member and lower electrode member. Since the upper and lower external terminal connection portions are extended, it is possible to suppress an increase in circuit resistance even if the line width of the bus bar is reduced, and to provide a touch panel with high input accuracy.
- the narrow frame touch panel according to the second embodiment of the present invention does not include a routing circuit, the routing circuit and the bus bar are not formed in parallel on the same surface as in the related art. In other words, it is possible to narrow the frame on the four sides without lowering the input accuracy.
- the narrow frame touch panel according to the second embodiment of the present invention does not use a film connector, it does not require a large bonding area for securing the adhesive strength of the film connector as in the related art. Therefore, it is possible to narrow the frame of the four sides.
- the bus bar and the routing circuit or the bus bar can be made finer than before.
- the frame-shaped spacer (double-sided tape or adhesive) that covers them and secures insulation can be made thinner at the same time, and the effective operation area remains the same size as before, with a smaller external size. And the size of the entire device can be reduced.
- a 65-mm-wide, 86-mm-wide, 125- ⁇ m-thick polyester resin film is used as the lower transparent insulating substrate, and a 15-nm-thick ITO film is formed on the upper surface by sputtering. Was removed to obtain a lower transparent electrode.
- a wire diameter of 5 ⁇ is made of gold so as to form a lower routing circuit connected to the lower busbar at a portion other than the lower busbar and the lower transparent electrode on two parallel sides of the lower transparent electrode.
- the two thin metal wires were arranged with one end extended by 15 mm outside the lower transparent insulating substrate.
- a conductive paste is applied with a dispenser so as to cover the thin metal wire, and the thin metal wire is fixed to the lower transparent insulating base material with a width of 150 ⁇ , and the end of the lower transparent insulating base material is fixed.
- a lower electrode member having a frame part having a width of 0.5 mm was obtained.
- a polyester resin film having the same length and width as the transparent insulating base material of the lower electrode member and a thickness of 188 / m is used as the upper transparent insulating base material of the upper electrode member.
- An upper electrode member was obtained.
- the two electrode members were arranged opposite to each other with an air layer between the electrodes, and both were adhered at the peripheral edge with a double-sided tape to obtain a narrow frame touch panel.
- Example 3 A thin metal wire whose outer peripheral surface is coated with a conductive hot-melt material made of tin is used, and the hot-melt material is melted and solidified by heating it, so that the thin metal wire is placed on the upper and lower transparent insulating substrates, respectively.
- the procedure was the same as in Example 1, except that it was fixed. (Example 3)
- a silver paste was applied on the upper and lower transparent insulating base materials by a dispenser, and fine metal wires were fixed on the upper and lower transparent insulating base materials through the silver paste, respectively. Except for this, the procedure was the same as in Example 1.
- the metal wires and the surrounding upper and lower transparent insulating substrates are coated with a silver paste using a disperser.
- the procedure was the same as in Example 1 except that the respective layers were coated.
- a 10-nm thick IT film is formed on the entire surface by sputtering, and the short side of the ITO film is formed.
- the part (0.5 mm width) was removed and the other part was used as the lower transparent electrode.
- a copper wire with a wire diameter of 80 ⁇ is tin-plated with a thickness of 10 m on the inside of 0.2 mm from the end, and a metal with a wire diameter of 100 ⁇ m is formed.
- the thin wire resistivity 1.
- a polyester resin film with the same length and width as the lower transparent insulating base material of the lower electrode member and a thickness of 188 ⁇ is used as the upper transparent insulating base material of the upper electrode member, and the short side of the upper transparent insulating base material is used.
- An upper electrode member was obtained in the same manner as the lower electrode member except that an upper bus bar was formed.
- the lower electrode member having a pair of upper and lower busbars formed on the upper and lower transparent electrodes, and the upper electrode member are arranged in such a manner that the upper and lower busbars are arranged in a square shape, and
- a framed touch panel was obtained.
- Example 5 was the same as Example 5 except that the upper and lower external terminal connection portions, which were extended portions of the thin metal wires, were arranged in two opposing corners of the touch panel. It should be noted that the present invention is not limited to the above embodiment, and can be implemented in various other modes.
- a thin metal wire is extended from each of the upper electrode member 1 and the lower electrode member 2 to the outside to form upper and lower external terminal connection portions 301, 302, 303, 304.
- the touch panel according to the modification of the first embodiment of the present invention is not limited to this, and the upper electrode member 1 and the lower electrode member 2 are collectively extended at one place to the outside with a material other than a thin metal wire. May be provided to form upper and lower external terminal connection sections.
- a film connector 90 in which the four metal wires of the routing circuit of the upper electrode member 1 and the lower electrode member 2 are connected together is shown in the right side of FIG. It may be arranged near the upper end of the.
- a film connector 90 When such a film connector 90 is formed of an FPC (Flexible Printed Circuit) and forms a take-out portion of a touch panel, there are the following advantages. Flexible film connector 90 enables easy connection / removal to main board that drives touch panel, drive display, drive the entire device, etc., reducing the number of assembly steps . Furthermore, the electrical inspection (at the time of shipment and evaluation) of the touch panel alone can be easily performed, and the inspection processing ability can be improved. Also, by using standard FPC, development costs can be reduced.
- FPC Flexible Printed Circuit
- Each of the thin metal wires 8, 113, 114, 223, and 224 is composed of a straight portion 150 and a bent portion 151.
- the bent portion 151 is subjected to stress such as pulling and shrinking due to changes in the environmental temperature, so that it is more strongly connected to the upper and lower transparent electrodes 12 and 22 than the other portion (straight portion 150). Need to be done. Therefore, a covering layer is formed by covering the fine metal wires 8 with the conductive paste 93.
- the width of the coating layer formed by the conductive paste 93 see Fig. 17: contact width with the upper and lower transparent electrodes 12 and 22 as the fixed surface
- the lower limit of the allowable range is larger than the allowable range of the coating layer forming width in the linear portion 150.
- the portions other than the busbar portion are removed from the transparent conductive film or placed on the portion where the insulating film is coated on the transparent conductive film. Conduction is achieved only with 8. Note that if the width of the coating layer is too narrow in portions other than the bus bar portion, if the thin metal wire 8 is broken, conduction is ensured even if the conductive paste functions as an auxiliary conductive material as described above. Can not be done.
- connection between the upper transparent electrode 12 and the thin metal wire 8 is subject to stress such as pulling, shrinking, bending, etc. due to an input or a change in environmental temperature. It is necessary to make the connection stronger than the connection. Therefore, when covering the metal wire 8 with the conductive base 93, the allowable range of the width D 2 of the covering layer of the conductive paste 93 on the upper transparent electrode 12 is limited by the lower transparent electrode 22. preferably, the lower limit is greater than the tolerance of the covering layer formation width D 2 of the conductive paste 9 3.
- connection area between the thin metal wire 8 and the upper and lower transparent electrodes 12 and 22 can be secured, and the stress of pulling and shrinking becomes strong.
- the straight portion 150 is intentionally illustrated with a relatively narrow width in an easy-to-understand form, a land is formed in the bent portion 151 as shown in FIG.
- the width of the straight portion 150 may be increased in accordance with the bent portion 151.
- the second thin metal wire 1 13 used in the embodiment, 114, 223, 224 of the present invention in the specific resistance value 20x10- 6 ⁇ ⁇ cm or less value, if the wire diameter. 30 to 100 m
- the resistance can be sufficiently reduced.
- the reason for the less resistivity it straight 20 ⁇ 10- 6 ⁇ ⁇ cm is as follows. In other words, in the limit printing for sufficiently forming the circuit forming pattern by the screen printing, the width is 0.5 mm and the thickness is about 5 ⁇ . In that case, since the general resistivity of the conductive paste is 9 X 10- 5 ⁇ ⁇ cm, the circuit resistance becomes 0. 3 5 QZcm.
- the specific resistance of the thin metal wire 8, 1 13, 1 14, 223, 224 used in the present invention is since approximately 25 X 10 _6 ⁇ ⁇ cm, by a specific resistance value of the metal thin wires is selected as follows 20 ⁇ 10- 6 ⁇ ⁇ cm, than the circuit formed by screen printing, further narrow frame with low resistance This is because a simple circuit can be formed.
- a fixing means of the above-mentioned thin metal wires 8, 1 13, 114, 223 and 224 a method other than the above-mentioned method can be used.
- the transparent and transparent base materials 11 and 21 can be performed by melting and solidifying the transparent and transparent base materials 11 and 21.
- the upper and lower transparent insulating substrates 11, 21 on and around the fine metal wires 113, 114, 22 3, 224 are bonded with an adhesive. It may be performed by coating.
- the means for covering the above-mentioned fine metal wires 113, 114, 223, 224 on the upper and lower transparent insulating base materials 11, 21 and the surroundings thereof with a conductive paste heats the transparent electrodes 12, 22. It is most preferable in that there is no fear of deterioration due to pressure and that the conductive stability between the transparent electrodes 12, 22 and the thin metal wires 113, 114, 223, 224 is obtained.
- the conductive paste 6 it is preferable to use the following specific resistance value 1x10- 4 ⁇ ⁇ cm.
- the thin metal wires 8, 113, 114, 223, and 224 are composed of the upper and lower busbars 13 although the conventional conductive paste for forming a circuit needs to have even lower resistance. , 14, 23, and 24, and it is only necessary to ensure conduction between the metal wires 8, 113, 114, 223, 224 and the transparent electrodes 12, 22.
- the conductive paste 6 is coated on the thin metal wires 8, 113, 114, 223, and 224 in advance and then placed on the upper and lower transparent insulating base materials 11 and 21, or the cross-sectional shape is round. Or when the contact area with the upper and lower transparent electrodes 12 and 22 is small and the conductive paste 6 is applied after arranging the fine metal wires on the upper and lower transparent insulating bases 11 and 21.
- the problem is the resistance of the conductive paste 6. If the specific resistance of the conductive paste 6 is greater than 1 X 10- 4 ⁇ ⁇ cm, the resistance increase between the metal thin wire and a transparent electrode 12, 22 can not be ignored, lowers the input accuracy during pen input.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US10/538,509 US7499038B2 (en) | 2002-12-10 | 2003-12-10 | Thin-frame touch panel |
EP03814544A EP1571537A4 (en) | 2002-12-10 | 2003-12-10 | TOUCH SCREEN TOUCH SCREEN |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2002357424 | 2002-12-10 | ||
JP2002-357424 | 2002-12-10 | ||
JP2003339264 | 2003-09-30 | ||
JP2003-339264 | 2003-09-30 |
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WO2004061640A1 true WO2004061640A1 (ja) | 2004-07-22 |
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PCT/JP2003/015768 WO2004061640A1 (ja) | 2002-12-10 | 2003-12-10 | 狭額縁タッチパネル |
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US (1) | US7499038B2 (ja) |
EP (1) | EP1571537A4 (ja) |
JP (1) | JP4346426B2 (ja) |
KR (1) | KR20050085413A (ja) |
CN (1) | CN100359447C (ja) |
TW (1) | TW200417929A (ja) |
WO (1) | WO2004061640A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11745466B2 (en) * | 2016-11-18 | 2023-09-05 | Unist(Ulsan National Institute Of Science And Technology) | Silver nanowire film and manufacturing method therefore, and touch screen panel and manufacturing method therefor |
Families Citing this family (49)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7808479B1 (en) | 2003-09-02 | 2010-10-05 | Apple Inc. | Ambidextrous mouse |
US7656393B2 (en) | 2005-03-04 | 2010-02-02 | Apple Inc. | Electronic device having display and surrounding touch sensitive bezel for user interface and control |
US11275405B2 (en) | 2005-03-04 | 2022-03-15 | Apple Inc. | Multi-functional hand-held device |
US20060001655A1 (en) * | 2004-07-01 | 2006-01-05 | Koji Tanabe | Light-transmitting touch panel and detection device |
JP4772460B2 (ja) * | 2005-11-10 | 2011-09-14 | 宸鴻光電科技股▲分▼有限公司 | 接触制御パネルの配線構造 |
JP4506742B2 (ja) * | 2006-01-27 | 2010-07-21 | エプソンイメージングデバイス株式会社 | タッチパネル、電気光学装置及び電子機器 |
CN101609383B (zh) * | 2006-03-03 | 2014-08-06 | 苹果公司 | 具有显示器和用于用户界面及控制的周围触摸敏感边框的电子设备 |
US8022935B2 (en) | 2006-07-06 | 2011-09-20 | Apple Inc. | Capacitance sensing electrode with integrated I/O mechanism |
KR101330697B1 (ko) | 2006-12-21 | 2013-11-18 | 삼성디스플레이 주식회사 | 표시 장치 |
JP2008305036A (ja) * | 2007-06-06 | 2008-12-18 | Hitachi Displays Ltd | タッチパネル付表示装置 |
JP5186496B2 (ja) * | 2007-06-28 | 2013-04-17 | 京セラ株式会社 | タッチパネルおよびタッチパネル型表示装置 |
JP4915954B2 (ja) * | 2007-11-27 | 2012-04-11 | グンゼ株式会社 | タッチパネルおよび該タッチパネルを使用したタッチパネル装置 |
WO2009078391A1 (ja) * | 2007-12-14 | 2009-06-25 | Kyocera Corporation | タッチパネルおよびタッチパネル型表示装置 |
JP5172385B2 (ja) * | 2008-02-25 | 2013-03-27 | 株式会社ワコム | 表示機能付き入力装置及び携帯型電子機器 |
JP2009259203A (ja) * | 2008-03-25 | 2009-11-05 | Epson Imaging Devices Corp | 静電容量型入力装置、入力機能付き表示装置および電子機器 |
JP4637294B2 (ja) | 2008-05-29 | 2011-02-23 | 日本写真印刷株式会社 | タッチ入力機能を備えた保護パネル |
WO2010016174A1 (ja) * | 2008-08-07 | 2010-02-11 | シャープ株式会社 | タッチパネル、表示装置及び電子機器 |
EP2169520A3 (en) * | 2008-09-26 | 2011-07-13 | Tovis Co. Ltd. | Touch panel using tempered glass |
JP5331437B2 (ja) * | 2008-10-09 | 2013-10-30 | 株式会社ジャパンディスプレイ | 液晶表示装置 |
TWI398809B (zh) * | 2009-09-11 | 2013-06-11 | Wintek Corp | 電容式觸控面板 |
KR101032021B1 (ko) * | 2009-04-20 | 2011-05-02 | 에이디반도체(주) | 커패시터 충전시간을 통하여 터치좌표를 인식하는 저항막방식 터치스크린 |
TWM367375U (en) * | 2009-05-05 | 2009-10-21 | Minlad Invest Ltd | Resistive touch panel |
JP5396335B2 (ja) | 2009-05-28 | 2014-01-22 | 株式会社半導体エネルギー研究所 | タッチパネル |
CN101943965B (zh) * | 2009-07-08 | 2013-09-18 | 群康科技(深圳)有限公司 | 触摸屏及具有触摸屏的电子装置 |
US20110012845A1 (en) * | 2009-07-20 | 2011-01-20 | Rothkopf Fletcher R | Touch sensor structures for displays |
CN101989135A (zh) * | 2009-08-07 | 2011-03-23 | 希姆通信息技术(上海)有限公司 | 一种触摸屏线路的配置方法 |
US8654524B2 (en) | 2009-08-17 | 2014-02-18 | Apple Inc. | Housing as an I/O device |
CN101995988B (zh) | 2009-08-19 | 2012-08-15 | 群康科技(深圳)有限公司 | 触摸屏 |
TWI426426B (zh) | 2009-12-31 | 2014-02-11 | Au Optronics Corp | 觸控式顯示裝置及其包含之觸控模組 |
CN101763204B (zh) * | 2010-01-18 | 2012-10-31 | 友达光电股份有限公司 | 触控式显示装置及其包含的触控模块 |
CN201732354U (zh) * | 2010-04-11 | 2011-02-02 | 宸鸿科技(厦门)有限公司 | 加强触控面板接合强度的堆栈结构 |
KR101706232B1 (ko) * | 2010-06-29 | 2017-02-15 | 엘지디스플레이 주식회사 | 터치 패널 |
KR20110125155A (ko) * | 2010-08-30 | 2011-11-18 | 삼성전기주식회사 | 터치스크린 |
KR20120030832A (ko) * | 2010-09-20 | 2012-03-29 | 삼성전기주식회사 | 터치스크린 및 그 제조방법 |
KR20120038823A (ko) * | 2010-10-14 | 2012-04-24 | 삼성전기주식회사 | 터치스크린 |
CN102478992B (zh) * | 2010-11-26 | 2015-02-25 | 群康科技(深圳)有限公司 | 触摸屏 |
US8520380B2 (en) * | 2010-12-21 | 2013-08-27 | Luminous Optical Technology Co., Ltd. | Frame of touch panel |
US9122088B2 (en) * | 2011-03-31 | 2015-09-01 | Nissha Printing Co., Ltd. | Capacitance type touch screen |
WO2013073460A1 (ja) * | 2011-11-17 | 2013-05-23 | グンゼ株式会社 | タッチパネル及びその製造方法 |
JP5876351B2 (ja) * | 2012-03-29 | 2016-03-02 | 三菱製紙株式会社 | 光透過性電極 |
CN103389818A (zh) * | 2012-05-10 | 2013-11-13 | 介面光电股份有限公司 | 触控面板 |
TW201421304A (zh) * | 2012-11-22 | 2014-06-01 | Ibm | 修補觸控面板之方法、修補組件、及觸控面板 |
CN103870080A (zh) * | 2012-12-07 | 2014-06-18 | 联胜(中国)科技有限公司 | 触控面板及触控显示模块 |
KR20140084880A (ko) | 2012-12-27 | 2014-07-07 | 삼성전기주식회사 | 터치 패널 |
KR101613773B1 (ko) * | 2013-11-04 | 2016-04-19 | 주식회사 동부하이텍 | 터치 패널 및 그 제조 방법 |
CN105072217B (zh) * | 2015-07-17 | 2018-05-22 | 广东欧珀移动通信有限公司 | 移动终端的操作电路、方法和系统 |
US10324620B2 (en) | 2016-09-06 | 2019-06-18 | Apple Inc. | Processing capacitive touch gestures implemented on an electronic device |
KR102054934B1 (ko) * | 2018-05-29 | 2019-12-12 | 일진디스플레이(주) | 투명 유연 전극을 구비하는 터치패널 및 그 제조방법 |
CN111782086B (zh) * | 2020-07-10 | 2022-05-06 | 业成科技(成都)有限公司 | 触控面板及其制造方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63269218A (ja) * | 1987-04-27 | 1988-11-07 | Shin Etsu Polymer Co Ltd | 座標入力装置の誤差検出回路 |
JPH0178326U (ja) * | 1987-11-10 | 1989-05-26 | ||
JPH01281622A (ja) * | 1988-05-09 | 1989-11-13 | Daicel Chem Ind Ltd | 透明タッチ式入力装置 |
JP2001216090A (ja) * | 2000-01-31 | 2001-08-10 | Nissha Printing Co Ltd | 狭額縁タッチパネル |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5933069Y2 (ja) * | 1982-07-03 | 1984-09-14 | アルプス電気株式会社 | 入力装置 |
US4625075A (en) * | 1984-09-25 | 1986-11-25 | Sierracin Corporation | Patterned conductive ink touch panel |
JPH036867A (ja) * | 1989-06-05 | 1991-01-14 | Mitsubishi Electric Corp | 光発電素子の電極構造、形成方法、及びその製造装置 |
JPH0378326A (ja) | 1989-08-22 | 1991-04-03 | Pioneer Electron Corp | 路側帯放送の受信機能を備えたオーディオ装置 |
GB9406702D0 (en) * | 1994-04-05 | 1994-05-25 | Binstead Ronald P | Multiple input proximity detector and touchpad system |
JPH0936395A (ja) | 1995-07-17 | 1997-02-07 | Canon Inc | 光起電力素子及びその形成方法 |
US6597946B2 (en) * | 1998-11-09 | 2003-07-22 | Transpharma Ltd. | Electronic card for transdermal drug delivery and analyte extraction |
JP4441102B2 (ja) | 1999-11-22 | 2010-03-31 | キヤノン株式会社 | 光起電力素子及びその製造方法 |
JP4104800B2 (ja) * | 1999-12-08 | 2008-06-18 | 三菱電機株式会社 | 液晶表示装置およびtftパネル |
US6727895B2 (en) * | 2000-02-02 | 2004-04-27 | 3M Innovative Properties Company | Touch screen panel with integral wiring traces |
TW508562B (en) * | 2001-01-10 | 2002-11-01 | Atouch Co Ltd | A contact structure of touch panel |
JP2002287902A (ja) * | 2001-01-17 | 2002-10-04 | Seiko Epson Corp | タッチパネル及び電子機器 |
-
2003
- 2003-12-10 EP EP03814544A patent/EP1571537A4/en not_active Withdrawn
- 2003-12-10 JP JP2003412052A patent/JP4346426B2/ja not_active Expired - Fee Related
- 2003-12-10 WO PCT/JP2003/015768 patent/WO2004061640A1/ja active Application Filing
- 2003-12-10 TW TW092134858A patent/TW200417929A/zh unknown
- 2003-12-10 KR KR1020057010278A patent/KR20050085413A/ko active IP Right Grant
- 2003-12-10 US US10/538,509 patent/US7499038B2/en not_active Expired - Fee Related
- 2003-12-10 CN CNB2003801053044A patent/CN100359447C/zh not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63269218A (ja) * | 1987-04-27 | 1988-11-07 | Shin Etsu Polymer Co Ltd | 座標入力装置の誤差検出回路 |
JPH0178326U (ja) * | 1987-11-10 | 1989-05-26 | ||
JPH01281622A (ja) * | 1988-05-09 | 1989-11-13 | Daicel Chem Ind Ltd | 透明タッチ式入力装置 |
JP2001216090A (ja) * | 2000-01-31 | 2001-08-10 | Nissha Printing Co Ltd | 狭額縁タッチパネル |
Non-Patent Citations (1)
Title |
---|
See also references of EP1571537A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11745466B2 (en) * | 2016-11-18 | 2023-09-05 | Unist(Ulsan National Institute Of Science And Technology) | Silver nanowire film and manufacturing method therefore, and touch screen panel and manufacturing method therefor |
Also Published As
Publication number | Publication date |
---|---|
KR20050085413A (ko) | 2005-08-29 |
JP2005128993A (ja) | 2005-05-19 |
CN100359447C (zh) | 2008-01-02 |
EP1571537A4 (en) | 2006-09-27 |
JP4346426B2 (ja) | 2009-10-21 |
EP1571537A1 (en) | 2005-09-07 |
US7499038B2 (en) | 2009-03-03 |
CN1720499A (zh) | 2006-01-11 |
TW200417929A (en) | 2004-09-16 |
US20060132465A1 (en) | 2006-06-22 |
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