JP3163430U - Touch panel stag layer combination structure - Google Patents

Abstract

Provided is a stag layer combination structure of a touch panel that can increase the yield, further improve the optical characteristics, and match the trend of electronic products that are thin and compact. At least one transparent touch sensor (30) is installed between the upper and lower substrates (10, 40) in an insulating manner, so that the signal conductor portion on the edge of the touch sensor (30) corresponds just below the color frame (20). The upper substrate 10 and the lower substrate 40 are planar or non-planar transparent thin plates, the color frame 20 is an opaque or nearly opaque transparent thin film, and the bottom surface of the lower substrate 40 is made of a transparent conductive material. A grounding layer can be installed to inhibit interference of electromagnetic noise, and a transparent protective layer is placed on the lower surface of the combination of the upper substrate 10 and the color frame 20 and is flat when sticking and bonding. A functional thin film is provided on the upper surface of the upper substrate 10, and the functional thin film is one of an atomized film, a hard coating film, and a light control layer. [Selection] Figure 1

Description

  The present invention relates to a stag layer combination structure of a touch panel, and in particular, has a transparent property and can be used by being placed on the front surface of an electronic product screen, thereby enabling a user to perform an interactive input operation. About.

Touch panels are widely applied to general consumer electronic products such as mobile phone terminals, digital cameras, digital music players (MP3), PDAs, and GPS.
The touch panel is used by being placed on the screen of these electronic products, which allows the user to perform interactive input operations, greatly improving the affinity of the man-machine interface and improving the efficiency of input operations. Can do.

As shown in FIGS. 7 and 8, when a conventional touch panel is installed, a surface decoration board 600 is adhered and installed on a transparent flat touch sensor board 500, and is further adhered to the screen. cover.
In general, the touch sensor plate 500 includes a touch sensor 501 and is interposed between an upper substrate 502 and a lower substrate 503 in an insulating state.
The surface decoration plate 600 is a transparent thin plate, and a color decoration frame 601 is formed on the periphery of the surface.
Thereby, the signal conducting wire portion 501a at the edge of the touch sensor 501 is shielded, and the object of beauty is achieved.
However, all of the parts such as the conventional surface decoration plate 600 and the touch sensor plate 500 are integrally formed by bonding with a transparent adhesive layer 700 (optical adhesive) after the manufacture is completed.
This type of structure not only has a complicated assembling procedure, but also an optical adhesive is expensive, and a defective product is likely to be formed at the time of bonding, so that materials are wasted and the production cost is increased.
In addition, when the surface decoration plate 600 is adhered to the touch sensor plate 500 with the transparent adhesive layer 700 and bonded, the thickness of the combined plate body increases drastically and cannot be adapted to the trend of electronic products that are thin and compact. Moreover, the optical characteristics of the touch panel are impaired.
The present invention has been made in view of the above-described drawbacks of the conventional stag layer combination structure of a touch panel.

  The problem to be solved by the present invention is that by directly installing the color frame and the touch sensor on the substrate of the touch panel, it is possible to reduce the entire adhesion process several times, and to increase the yield, Furthermore, the present invention is to provide a stag layer combination structure of a touch panel that can improve the optical characteristics and match the trend of electronic products that are thin and compact.

In order to solve the above problems, the present invention provides a stag layer combination structure of a touch panel described below.
The touch panel stag layer combination structure includes an upper substrate and a lower substrate,
A color frame is formed on the peripheral portion of the main surface of the upper substrate, and at least one transparent touch sensor is installed between the upper and lower substrates, whereby the signal conductors on the edge of the touch sensor. The part is installed just correspondingly below the color frame,
Each of the upper and lower substrates is a substantially transparent material, and is a flat or non-planar thin plate, and the material is a glass thin plate, polycarbonate (PC), polyethylene terephthalate (PE), polymethyl methacrylate ( PMMA) or cycloolefin copolymer (COC) is selected from various flexible thin plates. However, in practice, it is not limited to the above-mentioned materials, and various soft or hard substrates, transparent or translucent substrates should be adopted. Can
Each of the upper and lower substrates can use a homogenous or different thin plate material,
The components of the color frame are ink, color photoresist, organic material, or inorganic material. However, in practice, the material is not limited to the above-described materials, and the above-described materials can be used for printing, coating, metal deposition, etc. However, the scope of implementation is not limited to the above-described technical means. Preferably, the color frame is an opaque or nearly opaque thin film of 5 μm or less. ,
The touch sensor is a capacitor type touch sensor, an electric resistance type touch sensor, or an electromagnetic type touch sensor, or a combination of two or more types.
The upper sensing layer of the touch sensor is manufactured by processing directly on the bottom surface of the upper substrate of the color frame, and the lower sensing layer of the touch sensor is also directly installed on the upper surface of the lower substrate, Are united together with an insulating adhesive layer,
A transparent grounding layer (Shielding layer) is provided on the outer main surface of the lower substrate, and the material of the grounding layer is a material such as indium tin oxide (ITO), indium zinc oxide, or zinc aluminum oxide. The material of implementation is not limited to the above,
A transparent protective layer is provided on the lower surface of the combination of the upper substrate and the color frame, and the material of the transparent protective layer is a substance such as silicon nitride, silicon dioxide, photoresist, etc. Not limited to
A functional thin film is installed on the upper surface of the upper substrate, the functional thin film is an atomized film or a hard coating film, and the functional thin film can be a light control layer, and the light control layer is a polarizing film. In addition, one type or two or more types of optical thin films such as a retardation film or an optical isotropic film are stacked and combined.

  The stag layer combination structure of the touch panel of the present invention can reduce the entire adhesion process several times and increase the yield by directly installing the color frame and touch sensor on the touch panel substrate. In addition, the optical characteristics can be further improved to match the trend of electronic products that are thin and compact.

It is sectional drawing of the parts combination structure of 1st Example of this invention. It is sectional drawing of the form which arrange | positions and uses the touch panel of 1st Example of this invention in front of a screen. It is sectional drawing of the parts combination structure of 2nd Example of this invention. It is sectional drawing of the parts combination structure of 3rd Example of this invention. It is sectional drawing of another kind of combination form of this invention 3rd Example. It is sectional drawing of the parts combination structure of 4th Example of this invention. It is sectional drawing of another kind of combination form of this invention 4th Example. It is sectional drawing of another kind of combination form of 4th Example of this invention. It is sectional drawing of the combination form of another kind of this invention 4th Example. It is sectional drawing of the parts combination structure of 5th Example of this invention. It is sectional drawing of another kind of combination form of this invention 5th Example. It is sectional drawing of the further another kind combination form of 5th Example of this invention. It is sectional drawing of the further another kind combination form of 5th Example of this invention. It is a display figure of the structural member which comprises the conventional touch panel. It is sectional drawing of the parts combination structure of the conventional touch panel.

  The best mode for carrying out the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows a first embodiment of the present invention.
In the following embodiments, a capacitor-type touch panel will be described as an example. However, the scope of the present invention is not limited to a capacitor-type touch panel, and an electric resistance touch panel or an electromagnetic touch panel can be applied.

In the first embodiment, the touch panel structure includes an upper transparent substrate 10, a color frame 20, a touch sensor 30, and a lower transparent substrate 40 in order from the top to the bottom.
The upper and lower transparent substrates 10 and 40 are made of a substantially transparent material.
The material is selected from various flexible thin plates such as glass thin plate, polycarbonate (PC), polyethylene terephthalate (PE), polymethyl methacrylate (PMMA), or cycloolefin copolymer (COC). The substrate is not limited, and various soft or hard substrates, transparent or translucent substrates can be used.
The upper and lower substrates 10 and 40 can use the same or different thin plate materials.

The components of the color frame 20 are ink, color photoresist, organic material, or inorganic material. However, in practice, the material is not limited to the above-described material, and the above-described material may be used for printing, coating, metal deposition, and the like. It is installed at the peripheral portion of the bottom surface of the upper transparent substrate 10 by technical means.
However, the scope of implementation is not limited to the technical means described above.
The color frame 20 is an opaque thin film having a thickness of about 1 μm.

The touch sensor 30 here selects a capacitor-type touch panel as an example, which includes an X-axis sensing layer 30a, a Y-axis sensing layer 30b, and an insulating layer 30c.
The insulating layer 30c is disposed between the X-axis sensing layer 30a and the Y-axis sensing layer 30b.
As a result, the two sensing layers 30a and 30b are installed in an insulating manner, and the X-axis sensing layer 30a and the Y-axis sensing layer 30b are grounded and connected to a control circuit (not shown).
The X-axis sensing layer 30a and the Y-axis sensing layer 30b use indium tin oxide (ITO) thin films.
The insulating layer 30c is an insulating adhesive thin layer.
The X-axis sensing layer 30a, the Y-axis sensing layer 30b, and the insulating layer 30c are all thin layers that are substantially transparent.

The X-axis sensing layer 30a above the touch sensor 30 is manufactured by directly processing the main surface of the upper transparent substrate 10 on which the color frame 20 is installed.
The Y-axis sensing layer 30 b below the touch sensor 30 is directly installed on the upper main surface of the lower transparent substrate 40.
Further, an insulating layer 30c is provided with the X-axis sensing layer 30a and the Y-axis sensing layer 30b separated from each other, and they are joined together.

Since the touch sensor 30 is disposed below the surface of the upper transparent substrate 10 and the color frame 20, the signal conductor portion at the edge thereof is installed just correspondingly below the color frame 20.
Therefore, the color frame 20 shields the signal conductor portion on the edge of the touch sensor 30 and thus achieves beautification of the panel appearance.

The touch panel composed of the constituent members described above is installed by adhesive bonding in front of the screen 92 using the adhesive bonding layer 91 (see FIG. 2).
Thus, the user can input a signal by lightly touching or pushing a specific position on the panel through an instruction on the screen 92.
At the time of input operation, at the moment when the user's finger or conductor touches the surface of the touch panel, the capacitor type touch sensor 30 generates a sensing capacitor signal and measures the change of the sensing signal value to thereby determine the position of the finger or conductor. Can be determined, thereby achieving the purpose of signal input.

The structure of the above-described embodiment of the present invention and the conventional touch panel will be compared below.
The color frame 20 of the present invention and the upper X-axis sensing layer 30a are directly formed on the upper transparent substrate 10, and the lower Y-axis sensing layer 30b is also directly manufactured on the lower transparent substrate 40, and both are insulated. To join.
Therefore, the front adhesive bonding process between the conventional touch panel substrate, the surface decoration plate, and each sensing layer can be omitted, so that not only the processing cost can be reduced and the product yield can be improved, but also the product optics. It is advantageous for improving the characteristics and making the product thinner.

The basic structure of the first embodiment can be adjusted according to the difference in use conditions.
For example, in the second embodiment shown in FIG. 3, the ground layer 50 is installed on the lower surface of the lower transparent substrate 40 based on the structure of the first embodiment.
The ground layer 50 is manufactured using a transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide.
The ground potential can be maintained by the ground layer 50 and interference of electromagnetic wave noise with respect to the touch sensor 30 can be inhibited.

In the third embodiment shown in FIG. 4, based on the structure of the first embodiment, a transparent protective layer 60 is provided between the main surfaces of the upper transparent substrate 10 and the color frame 20 and the upper X-axis sensing layer 30 a of the touch sensor 30. Is installed.
As a result, it is possible to improve the flat and well-formed state when stagging and adhering and joining, and to avoid the problem of bubbles remaining on the edge of the color frame 20.
The material of the protective layer 60 is selected from materials such as silicon nitride, silicon dioxide, and photoresist, but the material for implementation is not limited to this.

  In another combination form of the third embodiment shown in FIG. 5, in addition to installing the transparent protective layer 60, the ground layer 50 is installed on the lower surface of the lower transparent substrate 40.

In the fourth embodiment shown in FIG. 6, a functional thin film 70 is installed on the upper surface of the transparent substrate 10 based on the structure of the first embodiment.
The functional thin film 70 is a single atomized film or a hard coating film, which can reduce the light reflectance of the touch panel surface or improve the hardness and wear resistance of the panel surface.
The functional thin film 70 is a light-adjusting thin film composed of one or more optical thin films such as a polarizing film, a retardation film, or an optically isotropic film having a light adjusting function. As a result, the advancedness of the screen can be enhanced.

  In other combinations of the fourth embodiment shown in FIGS. 7, 8, and 9, in addition to installing the functional thin film 70, one of the transparent protective layer 60 and the ground layer 50 is added, and the transparent protective layer is provided. 60 and the ground layer 50 are simultaneously installed.

The present invention is not limited to the above-described form, and more equivalent applications, improvements, and changes can be made with reference to the above description.
For example, the transparent substrate 10 can use a flat plate shape, and based on the structure of the first embodiment, the transparent substrate 10 can be a plate having an arcuate surface or other non-planar surface according to the needs of the touch panel usage scene. A formula plate (see FIGS. 10 to 13) can be adopted.
All of these changes are substantially the same as the above-described technique of the present invention because the same or similar effects as those of the above-described embodiment can be achieved.
In other words, equivalent applications based on the spirit of the present invention, conversion of parts (structure), replacement, and increase / decrease in quantity are all included in the protection scope of 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 .

DESCRIPTION OF SYMBOLS 10 Upper transparent substrate 20 Color frame 30 Touch sensor 30a X axis sensing layer 30b Y axis sensing layer 30c Insulating layer 40 Lower transparent substrate 50 Grounding layer 60 Transparent protective layer 70 Functional thin film 91 Adhesive bonding layer 92 Screen 500 Touch sensor board 501 Touch sensor 501a Signal conductor portion 502 Upper substrate 503 Lower substrate 600 Surface decoration plate 601 Decoration frame 700 Transparent adhesive layer

Claims (10)

An upper substrate, a color frame, at least one transparent touch sensor, and a lower substrate;
The upper substrate is a substantially transparent thin plate,
The color frame is an opaque or nearly opaque thin film formed on the peripheral portion of the main surface of the upper substrate.
The at least one transparent touch sensor includes an upper sensing layer and a lower sensing layer,
The lower substrate is a substantially transparent thin plate,
The upper sensing layer of the touch sensor is manufactured by directly processing on the bottom surface of the upper substrate of the color frame, and the lower sensing layer of the touch sensor is also directly disposed on the upper surface of the lower substrate. The stag layer combination structure of the touch panel, wherein the signal conducting wire portion on the edge of the touch sensor is installed so as to correspond to the lower part of the color frame. .   The upper substrate and the lower substrate are transparent thin plates selected from materials such as glass, polycarbonate (PC), polyethylene terephthalate (PE), polymethyl methacrylate (PMMA), or cycloolefin copolymer (COC). The stag layer combination structure of a touch panel according to claim 1.   The touch panel stag layer combination structure according to claim 1, wherein the upper substrate and the lower substrate are planar or non-planar transparent thin plates.   The touch panel stag layer combination structure according to claim 1, wherein the color frame is one material such as ink, color photoresist, organic material, or inorganic material.   2. The stag layer combination structure of a touch panel according to claim 1, wherein the touch sensor is a capacitor type touch panel, an electric resistance type touch panel, or an electromagnetic touch panel, or a combination of two or more types. The stag layer combination structure of the touch panel further includes a transparent ground layer installed on the outer main surface of the lower substrate,
2. The stag layer combination structure of a touch panel according to claim 1, wherein the material of the ground layer is selected from one material such as indium tin oxide (ITO), indium zinc oxide, or zinc aluminum oxide. The stag layer combination structure of the touch panel further includes a transparent protective layer on a lower surface of the combination of the upper substrate and the color frame,
2. The touch panel stag layer combination structure according to claim 1, wherein the transparent protective layer is made of one material such as silicon nitride, silicon dioxide, or photoresist.   The stag layer combination structure of the touch panel according to claim 1, wherein the stag layer combination structure of the touch panel further includes a functional thin film disposed on an upper surface of the upper substrate.   The stag layer combination structure of a touch panel according to claim 8, wherein the functional thin film is either an atomization film or a hard coating film. The functional thin film is a light control layer,
The touch panel according to claim 8, wherein the light adjusting layer is configured by stacking one or two or more kinds of optical thin films such as a polarizing film, a retardation film, or an optical isotropic film. Stag layer combination structure.

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