JP3166969U - Touch panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a touch panel which improves the accuracy of the alignment coupling between a sensor circuit and each laminate, reduces the steps of a plurality of laminate bonding steps, reduces the occurrence rate of defective products, and improves the optical characteristics. SOLUTION: A sensor electrode layer, a signal guide layer, and a functional thin film layer are directly formed on the main surfaces on both upper and lower sides of the same substrate. The functional thin film layer is an insulating layer, an adhesive layer, a protective layer, a decorative frame layer, a cover lens, an anti-fingerprint layer, an atomized film layer, a hard coating film layer, a polarizing film, a phase difference film, or a layer of a liquid crystal display module. A part or all composed of a plurality of layers. The substrate is a transparent composite plate in which a single transparent thin plate or a plurality of transparent thin plates are adhered and laminated to be integrated, and the plurality of transparent thin plates of the transparent composite plate use thin plates of the same or different materials. The transparent thin plate shall be a flat type or a non-flat type thin plate such as a convex surface or a concave surface. [Selection diagram] FIG. 9

Description

  The present invention relates to a touch panel. In particular, the present invention relates to a touch panel in which a sensor circuit and various functional thin film layers are arranged on two surfaces of a single substrate, and improves the alignment coupling of the sensor circuit and improves the optical characteristics of the panel. It is an improved touch panel that can be applied to high-efficiency production methods such as roll-to-roll and sheet-to-sheet.

A general touch panel is generally constructed by stacking multiple layers, and all current manufacturing methods are performed after overlaying electrodes, circuits, and various functional thin film layers on the upper and lower two-layer substrates, respectively. The two layers are laminated and integrated using a material such as a transparent optical adhesive as an adhesive layer. In the touch panel shown in FIG. 19 that is usually seen, the back surface of the lower substrate 820 is bonded to the upper surface of the electrode layer 850 of the upper substrate 840 using the adhesive layer 810, and then the cover lens (Cover lens) 870, etc. Various functional layers are laminated on the plate surface of the upper substrate 840, and the upper surface of the electrode layer 830 of the lower substrate 820 is covered with a protective layer 880. In addition, as shown in FIG. 20, after the electrode layer 850 of the upper substrate 840 and the electrode layer 830 of the lower substrate 820 are bonded and integrated using the adhesive layer 810, various types of cover lenses 870 and the like are formed by the adhesive layer 860. There is also a touch panel in which the functional laminate is bonded onto the plate surface of the upper substrate 840.
Although the manufacturing means can be mass-produced, the assembly operation process is slightly complicated, and the drawbacks are that the alignment accuracy of the upper and lower electrode layers 850 and 830 is not good. As a result, a touch signal deviation may occur or an incorrect signal may be generated, resulting in a defective product. In addition, the appearance and optical characteristics of the touch panel are severely impaired, causing refraction imbalance of light rays that pass through the panel, which causes problems such as deformation, blurring, and distortion of the display image.

  In view of the aforementioned problems, the present invention is to provide a touch panel. It increases the accuracy of alignment coupling between the sensor circuit and each stack by arranging the sensor electrode layer, signal guide layer and various functional thin film layers directly on the upper main surface and lower main surface of the substrate. Reduce the bonding process steps, reduce the incidence of defective products, and improve the optical properties of the touch panel.

In order to achieve the above-described object, the touch panel provided by the present invention includes a substrate, and an upper sensor electrode layer, an upper signal guide layer, and various functional thin film layers are sequentially disposed on the upper main surface of the substrate. A lower sensor electrode layer, a lower signal guide layer, and various functional thin film layers are arranged in this order on the lower main surface. Since the sensor electrode layer, the signal guide layer, and the various functional thin film layers are directly arranged on the upper main surface and the lower main surface of the same substrate, it is possible to improve the accuracy of alignment of each stack combined on the substrate. .
Among them, the substrate is a transparent flat or non-planar thin plate such as convex or concave, and the material is glass, polycarbonate (PC), polyethylene terephthalate (PET), polymethyl methacrylate resin (PMMA). However, the material range to be implemented is not limited to the above materials, and various soft or hard substrates, transparent or translucent substrates can be applied. In particular, the substrate may be a single thin plate or a transparent composite plate in which a plurality of thin plates are bonded and integrated, and the plurality of thin plates of the transparent composite plate are thin plates of the same or different materials. Can be used.

  The sensor electrode layer is a thin film using a material such as transparent indium tin oxide (ITO) or indium zinc oxide, and the signal guide layer is silver, copper, molybdenum aluminum molybdenum (Mo / Al / Mo), or silver palladium. A metal plating film using a material such as copper (Ag / Pd / Cu) (original Pu modified Pd) is used, and the sensor electrode layer and the signal guide layer are formed into electrodes and circuits by processing such as a photo process. The functional thin film layer includes an insulating layer, an adhesive layer, a protective layer, a decorative frame layer (I-CON), a cover lens, an anti-fingerprint layer, an atomized film layer, a hard coating film layer, a polarizing film, A phase difference film, a liquid crystal display module (LCM), or the like is provided, but the range of the type to be implemented is not limited to the functional thin film layer.

  The touch panel of the present invention has the effects of improving the accuracy of the alignment coupling of the sensor circuit and each stack, reducing the number of steps of the multi-layer bonding process, reducing the incidence of defective products, and improving the optical characteristics of the touch panel. .

It is sectional drawing of the member combination structure regarding 1st Example of this invention. It is sectional drawing of the member combination structure regarding the 2nd Example of this invention. It is sectional drawing of the member combination structure regarding the 3rd Example of this invention. It is sectional drawing of the member combination structure regarding 4th Example of this invention. It is sectional drawing of the member combination structure regarding 5th Example of this invention. It is sectional drawing of the member combination structure regarding 6th Example of this invention. It is sectional drawing of the member combination structure regarding 7th Example of this invention. It is sectional drawing of the member combination structure regarding the 8th Example of this invention. It is sectional drawing of the member combination structure regarding 9th Example of this invention. It is sectional drawing of the other member combination structure regarding 1st Example of this invention. It is sectional drawing of the other member combination structure regarding the 2nd Example of this invention. It is sectional drawing of the other member combination structure regarding the 3rd Example of this invention. It is sectional drawing of the other member combination structure regarding 4th Example of this invention. It is sectional drawing of the other member combination structure regarding the 5th Example of this invention. It is sectional drawing of the other member combination structure regarding 6th Example of this invention. It is sectional drawing of the other member combination structure regarding 7th Example of this invention. It is sectional drawing of the other member combination structure regarding the 8th Example of this invention. It is sectional drawing of the other member combination structure regarding 9th Example of this invention. It is sectional drawing of the member combination structure regarding a well-known touch panel. It is sectional drawing of the member combination structure regarding a well-known touch panel.

  Next, other functions and technical features of the present invention will be further explained. Those who are familiar with this technology will be able to instantly implement the present invention based on the explanation in the text.

  In the following implementation method, a capacitive touch panel will be described as an example. However, the scope of implementation of the present invention is not limited to the use of a capacitive touch panel, and for example, it is clearly described here that it can be applied to a resistive film type or electromagnetic induction type touch panel.

  In the first embodiment of the present invention shown in FIGS. 1 and 2, the touch panel mainly includes a transparent substrate 10, and the upper main surface of the transparent substrate 10 is an upper sensor electrode layer 20a and an upper signal guide layer in order. 30a and the upper protective layer 40a are disposed. The lower main surface of the transparent substrate 10 includes a lower sensor electrode layer 20b, a lower signal guide layer 30b, and a lower protective layer 40b in order. All the various processing steps applied to the stack formed on the substrate are all based on the same localization standard (not shown) on the substrate. The localization standard is, for example, a localization hole, a localization groove opening, and other various localization notations, each stack can be accurately localized, and the upper and lower sensor electrode layers with extremely high alignment accuracy can be arranged, so that the product defect rate The advantages of panel optical properties can be improved.

In the touch panel of the first embodiment described above, the material of the transparent substrate 10 is made of glass, polycarbonate (PC), polyethylene terephthalate (PET), polymethyl methacrylate resin (PMMA), cyclic olefin copolymer (COC), or the like. Although selected, the material range to be implemented is not limited to the above material, and any of various soft or hard substrates, transparent or translucent substrates can be applied.
The upper sensor electrode layer 20a and the lower sensor electrode layer 20b are thin films using transparent indium tin oxide (ITO), indium zinc oxide, or the like, and the upper sensor electrode layer 20a and the lower sensor electrode layer 20b are respectively X-axis sensors. Place the trace and Y-axis sensor trace.
The upper signal guide layer 30a and the lower signal guide layer 30b are metal plating films using materials such as silver, copper, molybdenum aluminum molybdenum (Mo / Al / Mo), silver palladium copper (Ag / Pd / Cu), A signal guide is formed by a photo process and connected to the sensor electrode layer.
Further, the material of the upper protective layer 40a and the lower protective layer 40b may be a material such as silicon nitride, silicon dioxide, photoresists, or a coagulation-curable adhesive layer such as a UV optical adhesive, or The glass is made of transparent material, polycarbonate (PC), or polyethylene terephthalate (PET), but the material range to be implemented is not limited to the above materials. The upper protective layer 40a and the lower protective layer 40b cover the outermost surfaces of the upper sensor electrode layer 20a and the upper signal guide layer 30a, and the lower sensor electrode layer 20b and the lower signal guide layer 30b, respectively. Prevents the electrode and signal guide from being scratched and damaged.

Furthermore, the basic structure based on the first embodiment described above enables adjustment according to the use conditions of the touch panel. For example, the second embodiment shown in FIG. 2 is based on the structure of the first embodiment, and the upper surface of the upper signal guide layer 30a is covered with the adhesive layer 51a, and the decorative frame layer (I-Con) 60 and A cover lens 70 is attached.
Among them, the component of the decorative frame layer 60 is ink, a color resist, an organic material, or an inorganic material, but the material range that can be implemented is not limited thereto. Moreover, although the said material is arrange | positioned to the edge of the bottom surface periphery of the cover lens 70 using technical means, such as printing, application | coating, metal vapor deposition, etc., the implementation range shall not be restrict | limited to the said technical means. In general, the decorative frame layer 60 forms an opaque thin film having a thickness of about 0.5 to 15 μm, and the decorative frame layer 60 has an upper signal guide layer and a lower signal guide layer formed at the peripheral edge of the transparent substrate 10 just below. Achieve the purpose of beautifying the appearance of the panel because it can be hidden.

  The third embodiment shown in FIG. 3 is obtained by replacing the flat cover lens 70 of the second embodiment with a protruding cover lens 70a having an arcuate surface. It should be noted that the non-planar cover lens can be an arcuate concave surface, or a surface with irregularities irregularly or irregularly arranged, in addition to the arcuate protruding surface described above. There is.

  In the fourth embodiment of the present invention shown in FIG. 4, an adhesive layer 51b is mainly disposed on the lower surface of the lower signal guide layer 30b of the second embodiment, and a liquid crystal display module (LCM, Liquid Crystal Display) is arranged. Module) 80 is bonded. Similarly, in the fifth embodiment of the present invention shown in FIG. 5, the adhesive layer 51b is disposed on the lower surface of the lower signal guide layer 30b of the third embodiment, and the liquid crystal display module 80 is bonded. .

The sixth embodiment of FIG. 6 is obtained by attaching a functional thin film 90 to the upper surface of the planar cover lens 70 of the second embodiment. Similarly, the seventh embodiment of FIG. 7 is a protruding cover of the third embodiment. A projecting surface type functional thin film 90a is bonded to the upper surface of the lens 70a.
In the eighth embodiment of FIG. 8, the functional thin film 90 is bonded to the upper surface of the flat cover lens 70 of the fourth embodiment. The ninth embodiment of FIG. 9 is the protruding cover lens of the fifth embodiment. A projecting surface type functional thin film 90a is bonded to the upper surface of 70a.
Among them, the functional thin films 90 and 90a are anti-fingerprint layers, atomized film layers, or hard coating film layers to prevent surface contamination, reduce the light reflectance of the touch panel surface, and increase the panel surface hardness. And increase wear resistance. The functional thin films 90 and 90a may be a single thin film having a light beam adjusting function. For example, one or two optical films such as a polarizing film, a phase difference film, and an optical isotropic film may be used. It is a light control thin film formed by combining thin film stacks of more than seeds, and expands the possibilities of display.

  The present invention is not limited to the above-described form, and can be improved or modified with more technology by referring to the above description. For example, the transparent substrate 10 can be a single transparent substrate based on the structure of any of the above-described embodiments, or a transparent composite plate in which a plurality of transparent substrates are adhered and integrated. The transparent composite plate is, for example, a transparent composite plate formed by bonding the first transparent substrate 10a and the second transparent substrate 10b with a transparent adhesive layer 10c (see FIG. 11). The same or different material is used for the one transparent substrate 10a and the second transparent substrate 10b. It can be seen that the above-described technique of the present invention is substantially the same because all of the above-described changes achieve the same or similar effects as the above-described embodiment. Accordingly, all modifications or changes relating to the present invention made under the same creative spirit shall fall within the protection scope intended by the present invention.

  The present invention has the novelty that is a requirement of the utility model, has sufficient progress compared to the conventional similar products, has high practicality, meets the needs of society, and has a very high industrial utility value .

10, 10a, 10b Transparent substrate 10c Transparent adhesive layer 20a Upper sensor electrode layer 20b Lower sensor electrode layer 30a Upper signal guide layer 30b Lower signal guide layer 40a Upper protective layer 40b Lower protective layer 51a, 51b Adhesive layer 60 Decorative frame layer 70 Cover Lens 70a Projecting cover lens 80 Liquid crystal display module 90 Functional thin film 90a Projecting surface type functional thin film 810 Adhesive layer 820 Lower substrate 830 Electrode layer
840 Upper substrate 850 Electrode layer 860 Adhesive layer 870 Cover lens 880 Protective layer

Claims (6)

Equipped with a substrate,
An upper sensor electrode layer, an upper signal guide layer, and a functional thin film layer are sequentially arranged on the upper main surface of the substrate, and a lower sensor electrode layer, a lower signal guide layer, and a functional thin film layer are sequentially arranged on the lower main surface of the substrate. And place
The sensor electrode layer, the signal guide layer, and the functional thin film layer are directly formed on the upper and lower main surfaces of the same substrate, and the functional thin film layer includes an insulating layer, an adhesive layer, a protective layer, a decorative frame layer, and a cover. A touch panel comprising a lens, an anti-fingerprint layer, an atomization film layer, a hard coating film layer, a polarizing film, a phase difference film, or a single layer or a combination of a plurality of layers of a liquid crystal display module.   The touch panel according to claim 1, wherein the substrate is a transparent thin plate or a transparent composite plate in which a plurality of transparent thin plates are bonded and integrated.   The touch panel according to claim 2, wherein a plurality of transparent thin plates of the transparent composite plate can use the same or different materials.   The touch panel according to claim 2, wherein the transparent thin plate is a flat type or a non-planar type thin plate such as a convex surface or a concave surface.   The touch panel according to claim 2, wherein a material of the transparent thin plate is any one of glass, polycarbonate, polyethylene terephthalate, polymethyl methacrylate resin, and cyclic olefin copolymer.   The touch panel according to claim 1, wherein the cover lens is a transparent flat plate or a non-planar thin plate such as a convex surface or a concave surface.

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