JP6098787B2 - Display device with touch panel - Google Patents

Description

  The present invention relates to a display device with a touch panel.

  Conventionally, a touch panel with a touch panel for detecting the input position is attached to the display surface of a display device in a personal computer, portable terminal, electronic notebook, OA device, game machine, PDA, bank terminal (cash dispenser), ticket vending machine, etc. Display devices are known. In such a display device with a touch panel, for example, as disclosed in Patent Document 1, a touch panel in which an electrode pattern for touch position detection is formed on one surface of a substrate made of glass is a display surface of the display device. It is arranged and configured.

JP 2011-054199 A

Since the conventional display device with a touch panel has a glass substrate as a constituent member of the touch panel, it may break. In order to prevent the touch panel from cracking, it is possible to increase the thickness of the glass substrate, but the weight increases. In particular, when it is attached to a device having a large screen size, it becomes an obstacle to weight reduction.
Moreover, since glass is included as a constituent member and flexibility is poor, there is also a problem that workability when the touch panel is disposed on the display surface is poor.

  The present invention has been made to solve such a problem, and an object of the present invention is to provide a touch panel display device including a thin, light, and hard-to-break touch panel.

  The object of the present invention is to provide a display device with a touch panel in which a touch panel unit is arranged without substantially providing a gap between the display surface of the display device, and the touch panel unit is arranged in order from the display device side. A planar body and a resin cover, the planar body includes a resin film and a conductive layer for detecting a touch position patterned on at least one surface of the resin film, and the resin cover includes: This is achieved by a display device with a touch panel having a thickness of 150 μm or more and 500 μm or less and a pencil hardness of the touch surface of the touch panel portion being H or more.

  By forming the planar member (resin cover or planar body) constituting the touch panel portion with a resin material, the touch panel portion can be made thin and light. Moreover, since the pencil hardness of the touch surface in a touch panel part is H or more, it becomes possible to suppress effectively the damage of a touch surface. In addition, since the touch panel unit according to the present invention has a thin and flexible structure, when pasting to the display surface of the display device through the adhesive layer, the touch panel unit is folded and bonded in order from the end. It can be installed neatly without causing air smearing. As a result, workability at the time of disposing the touch panel on the display surface of the display device is improved, and the work cost can be reduced.

  Moreover, in this display device with a touch panel, the thickness of the touch panel portion is preferably 300 μm or more and 1200 μm or less.

The weight per unit area of the touch panel unit is preferably not 0.03 g / cm ² or more 0.14 g / cm ² or less.

  The planar body has a first conductive layer patterned on one surface of the first resin film, a first electrode film having a thickness of 50 μm to 250 μm, and a second conductive layer patterned on one surface of the second resin film. And a laminate comprising a second electrode film having a thickness of 50 μm or more and 250 μm.

  Moreover, it is preferable that the said 1st resin film and the said 2nd resin film are respectively formed with the optical film.

  According to the present invention, it is possible to provide a touch panel display device including a touch panel that is thin, light, and hard to break.

1 is a schematic cross-sectional view of a display device with a touch panel according to an embodiment of the present invention. It is a top view of the 1st electrode film and 2nd electrode film with which the touch panel part shown in Drawing 1 is provided. It is a top view which shows the modification of the 1st electrode film with which the touch-panel part shown in FIG. 1 is equipped, and a 2nd electrode film. It is schematic structure sectional drawing which shows the modification of the display apparatus with a touch panel shown in FIG. It is explanatory drawing for demonstrating arrangement | positioning of the touchscreen part at the time of a pencil hardness measurement test.

  Hereinafter, a display device 100 with a touch panel according to an embodiment of the present invention will be described with reference to the accompanying drawings. Each drawing is partially enlarged or reduced to facilitate understanding of the configuration, not the actual size ratio. A display device 100 with a touch panel according to an embodiment of the present invention includes, for example, a personal computer, a smartphone, an electronic book terminal, a mobile phone, an electronic notebook, an OA device, a game machine, a PDA, a bank terminal (cash dispenser), a ticket machine, and the like. The display device 10 is used as an operation display device, and includes a display device 10 and a touch panel unit 1 as shown in the schematic cross-sectional view of FIG.

The touch panel unit 1 is a capacitive touch panel, and is disposed on the display surface 10a through the adhesive layer 6a without substantially providing a gap (air gap) between the display device 10 and the display surface 10a. Has been. As shown in FIG. 1, the touch panel unit 1 includes a planar body 2 and a resin cover 5 that are sequentially arranged from the display device 10 side. The planar body 2 and the resin cover 5 are adhered by an adhesive layer 6c. The touch panel unit 1 is preferably configured to have a thickness of 300 μm to 1200 μm, and more preferably 500 μm to 1000 μm. The weight per unit area of the touch panel portion 1, it is preferable to configure such that the 0.03 g / cm ² or more 0.14 g / cm ² or less, 0.07 g / cm ² or more 0.13 g / cm ² It is more preferable that the configuration is as follows. Here, the weight per unit area of the touch panel unit 1 refers to a parameter represented by (weight of the entire touch panel unit 1) / (panel area of the touch panel unit 1). In addition, the pencil hardness of the touch surface of the touch panel unit 1 is configured to be H or higher.

  In the configuration of FIG. 1, the planar body 2 is formed as a laminate including a first electrode film 3 and a second electrode film 4. The 1st electrode film 3 and the 2nd electrode film 4 are mutually stuck via the adhesion layer 6b. The first electrode film 3 includes a first resin film 31 and a first conductive layer 32 formed by patterning on one surface of the first resin film 31. Similarly, the second electrode film 4 includes a second resin film 41 and a second conductive layer 42 formed by patterning on one surface of the second resin film 41. The first electrode film 3 and the second electrode film 4 are preferably configured so that the thickness thereof is in the range of 50 μm or more and 250 μm or less.

  Further, on the first resin film 31, as shown in the plan view of FIG. 2A, a first lead wiring 33 that is electrically connected to each conductive portion 32a constituting the first conductive layer 32 is provided. Yes. Similarly, on the second resin film 41, as shown in the plan view of FIG. 2B, a second lead wiring 43 that is electrically connected to each conductive portion 42a constituting the second conductive layer 42 is provided. ing.

  As shown in FIG. 1, the first electrode film 3 and the second electrode film 4 include the other surface side of the first resin film 31 (the surface side on which the first conductive layer 32 is not formed) and the second resin film. One surface side of 41 (the surface side on which the second conductive layer 42 is formed) is attached via an adhesive layer 6b so as to face each other while being separated from each other. In the configuration of FIG. 1, the first conductive layer 32 formed on the first resin film 31 is arranged to face the touch surface (resin cover 5 side). Alternatively, the first electrode film 3 and the second electrode film 4 may be bonded via the adhesive layer 6b so that the first conductive layer 32 and the second conductive layer 42 are opposed to each other. Further, the first conductive layer 32 is disposed so as to face the display device 10 side, and the first conductive layer 32 and the other surface side of the second resin film 41 (the surface side on which the second conductive layer 42 is not formed). And the first electrode film 3 and the second electrode film 4 may be adhered via the adhesive layer 6b. In addition, the first electrode layer 3 and the second electrode film 4 are disposed through the adhesive layer 6b so that the other surface side of the first conductive layer 32 and the other surface side of the second conductive layer 42 are spaced apart from each other. You may stick.

  The first resin film 31 and the second resin film 41 are dielectric substrates that constitute an insulating layer, and are preferably made of a highly transparent material. For example, polyethylene terephthalate (PET), polyimide (PI), polyethylene naphthalate (PEN), polyethersulfone (PES), polyetheretherketone (PEEK), polycarbonate (PC), polypropylene (PP), polyamide (PA) , Cycloolefin resin comprising acrylic, amorphous polyolefin resin, cyclic polyolefin resin, aliphatic cyclic polyolefin, norbornene thermoplastic transparent resin, cycloolefin polymer (COP) or cycloolefin copolymer (COC) It is formed of a flexible film made of a synthetic resin such as these or a laminate of two or more of these. It is preferable that the thickness of the 1st resin film 31 and the 2nd resin film 41 is formed in the range of 50 micrometers-250 micrometers. The surfaces of the first resin film 31 and the second resin film 41 are subjected to plasma treatment for improving wettability, a hard coat layer for surface protection, the first conductive layer 32 and the second conductive layer 42. Necessary functional films such as an undercoat layer may be added to improve adhesion and optical properties.

  Moreover, you may comprise the 1st resin film 31 and the 2nd resin film 41 with the optically isotropic film (optical film) formed with the optically isotropic material. The light isotropic material is a material that is not polarized with respect to all incident light. For example, polycarbonate (PC), polyethersulfone (PES), polyacryl (PAC), amorphous polyolefin resin Examples thereof include cyclic polyolefin resins, aliphatic cyclic polyolefins, norbornene-based thermoplastic transparent resins, cycloolefin resins composed of cycloolefin copolymers (COC), and the like. As a method of forming the first resin film 31 and the second resin film 41 using these materials, a technique of casting or extrusion can be used.

  The patterned first conductive layer 32 and second conductive layer 42 respectively formed on one main surface of the first resin film 31 and the second resin film 41 are as shown in FIGS. These are formed as an assembly of strip-like conductive portions 32a and 42a formed to extend in parallel with each other at a predetermined interval. The strip-shaped conductive portions 32a and 42a constituting the first conductive layer 32 and the second conductive layer 42 have a configuration in which a plurality of rhombus-shaped conductive portions are linearly connected, and the first conductive layer 32 and the second conductive layer 42 are connected. The connecting directions of the rhombus-shaped conductive portions are orthogonal to each other, and are arranged so that the upper and lower rhombus-shaped conductive portions do not overlap in plan view. In addition, the pattern shape of the 1st conductive layer 32 and the 2nd conductive layer 42 is not limited to the thing of this embodiment, As long as it can detect contact points, such as a finger | toe, it can be made into arbitrary shapes. For example, as shown in the plan views of FIGS. 3A and 3B, the shape of the strip-shaped conductive portions 32a and 42a may be rectangular. However, with respect to the operation performance such as the resolution of the touch panel unit 1, when the first electrode film 3 and the second electrode film 4 are overlapped, a configuration in which the area where the conductive parts 32 a and 42 a do not exist is reduced is adopted. Is excellent. From such a point of view, the pattern shape of the first conductive layer 32 and the second conductive layer 42 is preferably a configuration in which a plurality of rhombus-shaped conductive portions are connected in a straight line rather than a rectangular configuration. However, the present invention is not limited to this embodiment, and an appropriate pattern shape can be selected.

  As materials for the first conductive layer 32 and the second conductive layer 42, indium tin oxide (ITO), indium oxide, antimony-added tin oxide, fluorine-added tin oxide, aluminum-added zinc oxide, potassium-added zinc oxide, silicon-added oxide Transparent conductive materials such as zinc, zinc oxide-tin oxide, indium oxide-tin oxide, zinc oxide-indium oxide-magnesium oxide, zinc oxide, tin oxide film, or tin, copper, aluminum, nickel, chromium Examples thereof include metal materials such as metal oxide materials, and may be formed by combining two or more of these materials. In addition, a simple metal weak against acid or alkali can be used as a conductive material.

  In addition, the first conductive layer is a composite material in which ultrafine conductive carbon fibers such as carbon nanotubes, carbon nanohorns, carbon nanowires, carbon nanofibers, and graphite fibrils, or ultrafine conductive fibers made of silver or the like are dispersed in a polymer material that functions as a binder. 32 and the second conductive layer 42 can also be used. Here, a conductive polymer such as polyaniline, polypyrrole, polyacetylene, polythiophene, polyphenylene vinylene, polyphenylene sulfide, poly p-phenylene, polyheterocyclic vinylene, PEDOT: poly (3,4-ethylenedioxythiophene) should be adopted as the polymer material. Can do. In addition, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyethersulfone (PES), polyetheretherketone (PEEK), polycarbonate (PC), polypropylene (PP), polyamide (PA), acrylic, polyimide, Non-conductive polymers such as epoxy resins, phenol resins, aliphatic cyclic polyolefins, norbornene-based thermoplastic transparent resins can be employed.

  When a carbon nanotube composite material in which carbon nanotubes are dispersed in a non-conductive polymer material is employed as the material of the first conductive layer 32 and the second conductive layer 42, the carbon nanotubes generally have a diameter of 0.8 nm. Since it is very thin as ~ 1.4nm (around 1nm), dispersion of carbon nanotubes in a non-conductive polymer material by one or one bundle reduces the light transmission and reduces the transparency of the planar body 2. It is preferable in securing.

  Examples of the method for forming the first conductive layer 32 and the second conductive layer 42 include PVD methods such as sputtering, vacuum deposition, and ion plating, CVD, coating, and printing. In addition, the thickness of the first conductive layer 32 and the second conductive layer 42 is preferably 60 nm or less, and more preferably 30 nm or less when an ITO film is formed by, for example, a sputtering method. Note that when the film thickness is 5 nm or less, it is difficult to form a continuous film, and it is difficult to form a stable conductive layer.

  The first conductive layer 32 and the second conductive layer 42 are patterned by forming a mask portion having a desired pattern shape on the surface of the ITO film or the like formed on the first resin film 31 and the second resin film 41. After the exposed portion is removed by etching with an acid solution or the like, the mask portion can be dissolved with an alkali solution or the like.

  The first lead-out wiring 33 electrically connected to each strip-like conductive part 32a in the first conductive layer 32 and the second lead-out wiring 43 electrically connected to each strip-like conductive part 42a in the second conductive layer 42 are the first This is for guiding the touch signal detected by the conductive layer 32 and the second conductive layer 42 to a touch position determining circuit (not shown) arranged outside. As shown in FIGS. 2A and 2B, one end of each first lead-out wiring 33 is connected to each strip-like conductive portion 32a, and the other end is a side edge of the first resin film 31. Is arranged. Similarly, one end portion of each second lead-out wiring 43 is connected to each strip-like conductive portion 42 a, and the other end portion is disposed on the side edge portion of the second resin film 41. In addition, one end portions of the first lead-out wiring 33 and the second lead-out wiring 43 that are respectively arranged on the side edges of the first resin film 31 and the second resin film 41 are arranged so as to be gathered together at a predetermined interval. Has been. One end portions of the first lead-out wiring 33 and the second lead-out wiring 43 arranged so as to form a group constitute a connection terminal, and a flexible wiring board (not shown) is connected to the connection terminal, The touch signals detected by the first conductive layer 32 and the second conductive layer 42 are guided to a touch position determination circuit (not shown) arranged outside.

  The first lead-out wiring 33 and the second lead-out wiring 43 are formed by (A) screen printing a conductive paste containing conductive particles of metal such as silver on the first and second resin films 31, 41, (B) A method in which a metal foil such as copper is laminated on the first and second resin films 31, 41, a resist pattern is formed on the metal foil, and the metal foil is etched (see, for example, JP-A-2008-32884) Is mentioned. The first and second lead wires 33 and 43 may be formed of the same material (indium tin oxide (ITO), conductive polymer, etc.) as the first conductive layer 32 and the second conductive layer 42 described above. . When the first and second lead lines 33 and 43 are formed of the same material as the first conductive layer 32 and the second conductive layer 42, the same method as the patterning method for the first conductive layer 32 and the second conductive layer 42, The formation method of (B), the method of removing an unnecessary area | region by laser irradiation, etc. are employable.

Examples of the conductive particles in the forming method (A) include fine particles containing silver as a main component. Further, for example, fine particles mainly containing any one of gold, MAM, copper, an alloy of gold and silver, an alloy of gold and copper, an alloy of silver and copper, and an alloy of gold, silver, and copper may be used. In addition, indium tin oxide (ITO), conductive oxide in which zinc oxide is mixed with indium oxide (IZO [indium
zinc oxide]), or fine particles mainly composed of conductive oxide (ITSO) in which silicon oxide is mixed with indium oxide. In addition, as another conductive paste, a conductive material using a conductive polymer such as PEDOT (poly-3,4-ethylenedioxythiophene), or a fine conductive fiber such as carbon nanowire or metal nanowire as a conductor. Can be used. Note that the method for forming the lead-out wiring is not limited to the method described in (A) and (B) above, and a printing method such as gravure printing other than the above (A) or photolithography other than the above (B) is used. May be.

  The resin cover 5 is a transparent sheet member having a function of protecting the planar body 2 and is formed in a rectangular shape in plan view. The resin cover 5 is laminated on the exposed surface of the first resin film 31 via the adhesive layer 6c so as to cover substantially the entire region of the planar body 2 in plan view. The exposed surface constitutes a touch surface for touch operation. Examples of the resin cover 5 include polyethylene terephthalate (PET), polyimide (PI), polyethylene naphthalate (PEN), polyethersulfone (PES), polyetheretherketone (PEEK), polycarbonate (PC), polypropylene (PP ), Polyamide (PA), acrylic (polymethyl methacrylate; PMMA), or other synthetic resin-made flexible film. A hard coat layer or the like may be provided on the surface of these films. Moreover, you may comprise the resin cover 5 by these 2 or more types of laminated bodies. As the resin cover 5 having a laminated structure, a laminated film (PMMA / PC / PMMA film) in which an acrylic film is disposed on both sides of a polycarbonate (PC) film, or a polycarbonate (PC) film on one side of the acrylic film. A laminated film (PMMA / PC film) provided with is preferably used. Here, the thickness of the resin cover 5 is preferably configured to be 150 μm or more and 500 μm or less, and more preferably 240 μm or more and 500 μm or less. By setting the thickness of the resin cover 5 to 150 μm or more, a display device with a touch panel in which the pencil hardness of the touch surface is H or more can be achieved. Moreover, the touch panel part 1 can be efficiently affixed on the display surface 10a because the thickness of the resin cover 5 is 500 μm or less.

  The adhesive layers 6a, 6b, and 6c can be made of a general transparent adhesive such as epoxy, acrylic, silicon, or urethane, and includes a core made of a polyester resin transparent film. May be. Moreover, the adhesive layers 6a, 6b, and 6c may be formed by overlapping a plurality of sheet-like adhesive materials, and further, a plurality of types of sheet-like adhesive materials may be overlapped. Further, an ultraviolet curable resin such as an acrylic UV curable resin or a silicon UV curable resin may be used. The thickness of each of the adhesive layers 6a, 6b, 6c is not particularly specified, but is preferably 15 μm to 175 μm in practice. If the bonding surface has irregularities such as a printed pattern of the lead-out wiring or a decorative printed layer, an appropriate thickness that is not easily affected by the step is selected.

  In the display device with a touch panel 100 having the above-described configuration, the touch position detection method is the same as that of a conventional capacitive touch panel, and when an arbitrary position on the surface side of the touch panel unit 1 is touched with a finger or the like, The first conductive layer 32 and the second conductive layer 42 in the state body 2 are grounded through the capacitance of the human body at the contact position, and a current value flowing through the first conductive layer 32 and the second conductive layer 42 is detected ( By detecting a change in capacitance between the human body and the human body), the coordinates of the contact position are calculated.

  In the display device with a touch panel 100 of the present embodiment, since the planar member (resin cover 5 and planar body 2) constituting the touch panel unit 1 is formed of a resin material, the touch panel unit 1 has a thin and light structure. It becomes possible. As a result, workability when the touch panel is disposed on the display surface 10a of the display device 10 is improved, and a display panel with a touch panel can be efficiently manufactured. Moreover, since the possibility that the touch panel unit 1 is broken can be reduced, the yield is improved, and the display device with a touch panel 100 can be manufactured at a low cost. Moreover, since the pencil hardness of the touch surface in the touch panel part 1 is H or more, the touch surface can be effectively prevented from being damaged. In addition, since the touch panel unit 1 according to the present invention has a thin, light, and flexible structure, the touch panel unit can be folded and bonded sequentially from the end of the display device 10 via the adhesive layer 6a. When sticking to the display surface 10a, it can be installed neatly without causing air smearing.

  As mentioned above, although one Embodiment of the display apparatus 100 with a touchscreen which concerns on this invention was described, a specific structure is not limited to the said embodiment. For example, in the said embodiment, although the planar body 2 is comprised so that the 1st electrode film 3 and the 2nd electrode film 4 may be provided, any one of the 1st electrode film 3 and the 2nd electrode film 4 is comprised. The display device 100 with a touch panel may be configured in a form that is omitted.

  Moreover, in the said embodiment, it comprises so that the 1st electrode film 3 and the 2nd electrode film 4 may be provided as a structure of the planar body 2, and the 1st conductive layer 32 and the 2nd conductive layer 42 are formed in each. For example, as shown in FIG. 4, the second electrode film 4 is omitted, and the first conductive layer 32 and the first conductive film 32 are formed on both surfaces of the first resin film 31 in the first electrode film 3. The planar body 2 may be configured such that the two conductive layers 42 are formed.

  Moreover, in the said embodiment, when it comprises so that it may comprise the 1st electrode film 3 and the 2nd electrode film 4 as a structure of the planar body 2, when both are overlap | superposed, the strip | belt-shaped electroconductive part 32a mutually orthogonally crossed , 42a, the first conductive layer 32 and the second conductive layer 42 are provided. For example, the second electrode film 4 is omitted and one of the first resin films 31 in the first electrode film 3 is omitted. The planar body 2 may be configured by forming the second conductive layer 42 on the surface (the surface on which the first conductive layer 32 is formed). When the planar body 2 is configured in this way, a portion where the strip-shaped conductive portion 32a of the first conductive layer 32 and the strip-shaped conductive portion 42a of the second conductive layer 42 overlap each other is formed. By interposing the insulating portion in the overlapping portion, the first conductive layer 32 and the second conductive layer 42 can be prevented from conducting and the function as a touch panel can be maintained. Alternatively, the planar body 2 may be configured by forming a dielectric layer such as a hard coat on the entire surface of the first conductive layer 32 and forming the second conductive layer 42 on the dielectric layer.

Moreover, since this inventor created the sample of the touchscreen part 1 shown in FIG.1 and FIG.4, and measured the weight per unit area in the touchscreen part 1 whole, and the pencil hardness in the touch surface of the touchscreen part 1, These results are shown below. Sample 1 to Sample 9 have the configuration of the touch panel unit 1 shown in FIG. 1, and Sample 10 to Sample 12 have the configuration of the touch panel unit 1 shown in FIG. The material, the weight per unit area (g / cm 2) and thickness (μm) of Sample 1 to Sample 9, and the pencil hardness, the total thickness of the sample (μm), the weight per unit area of the entire sample ( g / cm ² ) is shown in Table 1. In addition, the material of each constituent member in samples 10 to 12, the weight per unit area (g / cm 2) and thickness (μm), the pencil hardness, the thickness of the entire sample (μm), and the unit area of the entire sample The weight (g / cm ² ) is shown in Table 2. In addition, in the sample 12, it is set as the conventional structure provided with a glass cover instead of the resin cover 5 of FIG. Here, the pencil hardness is a result of a test conducted with a test load of 750 g based on JIS5600. For the adhesive layers 6a, 6b and 6c, an acrylic adhesive (Olivein BPS5296) manufactured by Toyo Ink Co., Ltd. was used. The adhesive layer 6a (thickness: 100 μm) was tested by placing the sample on the glass plate 8 with the lami film 7 attached to the opposite side of the surface bonded to the second electrode film 4 (the state shown in FIG. 5). went. In addition, regarding the samples 10-12, the sample was placed on the glass plate 9 in a state where the lami film 8 was attached on the opposite side of the surface bonded to the first electrode film 3 and tested.

  From Table 1, when the thickness of the resin cover 5 is larger than 150 μm, the pencil hardness is H or more (sample 2 and sample 4). Moreover, when the thickness of the resin cover 5 is 200 micrometers or more, it turns out that pencil hardness becomes 3H or more. In particular, when a high-hardness acrylic resin (PMMA) and a laminate thereof are used as the resin cover 5, it can be seen that the pencil hardness is 6H or more at 200 μm or more (Sample 5 to Sample 9, Sample 9). 11). Further, from Table 2, the sample 12 using glass as the cover (corresponding to the resin cover 5) disposed on the first electrode film 3 is more sampled than the configuration using the resin cover 5 (sample 10 and sample 11). It can be seen that the overall weight per unit area is significantly increased. That is, in contrast to the configuration in which glass is used for part of the planar member (resin cover 5, first electrode film 3 (second electrode film 4)) constituting the touch panel unit 1, as in the present invention, the touch panel unit 1. It can be seen that an extremely light touch panel portion 1 can be configured by forming all of the planar members constituting the layer of resin material.

  Further, the inventor has an influence on the pencil hardness on the touch surface of the touch panel unit 1 by the thickness of the resin cover 5 and the thickness of the adhesive layer 6 c disposed between the planar body 2. Were also tested. Specifically, with respect to the touch panel unit 1 shown in FIG. 1, samples in which the thickness of the adhesive layer 6c was changed were created, and pencil hardness was measured for each sample. The measurement method was the same as in Tables 1 and 2 except for the sample configuration. Specifically describing each sample, the first electrode film 3 and the second electrode film 4 are each composed of a PET material having a thickness of 125 μm, and the thicknesses of the adhesive layers 6a and 6b are 100 μm and 50 μm, respectively. Configured. Regarding the resin cover 5, three types of those made of a PET material having a thickness of 125 μm to 250 μm were prepared. The test results are shown in Table 3.

  From Table 3, regarding the samples A and B in which the thickness of the resin cover 5 of the PET material is 125 μm, the pencil hardness of the sample A in which the adhesive layer 6c is not provided is H, whereas the sample B having the adhesive layer 6c is The pencil hardness is F, and it can be seen that the pencil hardness is reduced by providing the adhesive layer 6c. Moreover, regarding the samples C to F in which the thickness of the resin cover 5 is 188 μm, the pencil hardness of the sample C without the adhesive layer 6c is 2H, whereas the samples D to F having the adhesive layer 6c are It can be seen that the pencil hardness is H and the pencil hardness is lowered by providing the adhesive layer 6c. On the other hand, with respect to Sample G to Sample J in which the thickness of the resin cover 5 is 250 μm, the pencil hardness remains 3H and the resin cover 5 has a thickness of 250 μm regardless of the presence or absence, type or thickness of the adhesive layer 6c. It can be seen that the pencil hardness is not lowered without being affected by the adhesive layer 6c. That is, with respect to the thickness of the resin cover 5, the pencil hardness can be maintained without being affected by the thickness condition in which the pencil hardness is reduced due to the influence of the adhesive layer 6c and in the range of about 230 μm to 240 μm. It is considered that there is a boundary (change point) with the thickness condition. Accordingly, by setting the thickness of the resin cover 5 to 240 μm or more, it is possible to effectively configure the touch panel portion 1 that is less affected by the pencil hardness without being affected by the adhesive layer 6c. it is conceivable that.

DESCRIPTION OF SYMBOLS 100 Display apparatus 1 with a touch panel Touch panel part 2 Planar body 3 1st electrode film 31 1st resin film 32 1st conductive layer 33 1st extraction wiring 4 2nd electrode film 41 2nd resin film 42 2nd conductive layer 43 2nd Lead wiring 5 Resin covers 6a, 6b, 6c, 6d, 6e Adhesive layer 7 Lami film 8 Glass plate 10 Display device 10a Display surface

Claims (9)

In a display device with a touch panel in which a touch panel portion is disposed on the display surface via an adhesive layer without substantially providing a gap between the display surface of the display device,
The touch panel unit includes a planar body, an adhesive layer, and a resin cover that are sequentially arranged from the display device side.
The planar body includes a resin film and a conductive layer for touch position detection patterned on at least one surface of the resin film,
The resin cover is a laminated film in which a PMMA (polymethyl methacrylate ) film is disposed on both sides of a polycarbonate film, or a polycarbonate film is disposed on one side of a PMMA (polymethyl methacrylate) film. Is a laminated film,
Pencil hardness of the touch surface is more than 6H in the touch panel, the thickness of the touch panel unit, 330 [mu] m or more 913μm or less, the weight per unit area of the touch panel portion, 0.04 g / cm ² or more 0.119 g / cm ² or less A display device with a touch panel. The display device with a touch panel according to claim 1, wherein the resin cover has a thickness of 200 μm or more and 500 μm or less. In a display device with a touch panel in which a touch panel portion is disposed on the display surface via an adhesive layer without substantially providing a gap between the display surface of the display device,
The touch panel unit includes a planar body, an adhesive layer, and a resin cover that are sequentially arranged from the display device side.
The planar body includes a resin film and a conductive layer for touch position detection patterned on at least one surface of the resin film,
The resin cover is a flexible film of polyethylene terephthalate, and has a thickness of 250 μm or more and 500 μm or less,
A display device with a touch panel, wherein the touch panel has a touch surface with a pencil hardness of 3H or more.   The display device with a touch panel according to claim 1, further comprising a hard coat layer formed on a surface of the resin cover.   The display device with a touch panel according to claim 4, wherein the hard coat layer is formed of a hard coat material containing a fluorine-based component or a silicon-based component or both.   The display device with a touch panel according to claim 4 or 5, wherein the hard coat layer has a surface friction coefficient of 0.03 to 0.2.   The display device with a touch panel according to claim 1, wherein the resin film is formed of an optical film. The planar body is
A first conductive layer is patterned on one surface of the first resin film, and a first electrode film having a thickness of 50 μm or more and 250 μm;
A laminate comprising a second conductive layer patterned on one surface of the second resin film, a second electrode film having a thickness of 50 μm or more and 250 μm, and an adhesive layer interposed between the first electrode film and the second electrode film The display device with a touch panel according to claim 1, wherein the display device is a body. The display device with a touch panel according to claim 8 , wherein at least one of the first resin film and the second resin film is formed of an optical film.

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