JP2016031696A - Touch panel device and touch pane manufacturing method - Google Patents

Touch panel device and touch pane manufacturing method Download PDF

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JP2016031696A
JP2016031696A JP2014154588A JP2014154588A JP2016031696A JP 2016031696 A JP2016031696 A JP 2016031696A JP 2014154588 A JP2014154588 A JP 2014154588A JP 2014154588 A JP2014154588 A JP 2014154588A JP 2016031696 A JP2016031696 A JP 2016031696A
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decorative layer
touch panel
layer
panel device
surface side
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JP6213737B2 (en
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藤井　哲也
Tetsuya Fujii
哲也 藤井
柴田　実
Minoru Shibata
実 柴田
片桐　勝広
Katsuhiro Katagiri
勝広 片桐
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Toyoda Gosei Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a touch panel device that prevents obstruction of a design property due to occurrence of a light leakage from a decorative layer, and can surely secure a working range of an electrostatic capacitance sensor sheet.SOLUTION: A touch panel device 10 comprises: a panel material 11 that is made up of a transparent material; a first decorative layer 12 that is formed on a front surface side of the panel material 11; a second decorative layer 13 that is formed on a rear surface side of the panel material 11; and an electrostatic capacitance sensor sheet 15 that is adheredly fixed to the rear surface side of the panel material 11. Each of the decorative layers 12 and 13 has transparent parts 12a and 13a, and non-transparent parts 12b and 13b, in which the transparent parts 12a and 13a of each of the decorative layers 12 and 13, and the non-transparent parts 12b and 13b thereof are formed into the almost same dimension and shape in a plane view when viewing the touch panel device 10 from the front surface side, and the transparent parts 12a and 13a of each of the decorative layers 12 and 13, and the non-transparent parts 12b and 13b thereof are arranged so as to overlap each other.SELECTED DRAWING: Figure 1

Description

本発明はタッチパネル装置およびタッチパネル装置の製造方法に関するものである。   The present invention relates to a touch panel device and a method for manufacturing the touch panel device.

近年、自動車のインストルメントクラスターパネルに、静電容量センサシートを用いたタッチパネル装置を設置し、そのタッチパネル装置により自動車に搭載された各種装置（例えば、カーナビゲーション装置、オーディオ装置、空調装置、ウインド開閉装置など）を操作する技術が提案されている。
例えば、特許文献１には、自動車のセンターコンソール等に該当する絶縁性のハウジング（パネル材）の裏面側に、基材層に導電層が形成された可撓性の静電センサシート（静電容量センサシート）を取り付けた技術が開示されている。 In recent years, a touch panel device using a capacitive sensor sheet has been installed on an instrument cluster panel of an automobile, and various devices (for example, a car navigation device, an audio device, an air conditioner, a window opening / closing device) mounted on the automobile by the touch panel device. Techniques for operating devices) have been proposed.
For example, Patent Document 1 discloses a flexible electrostatic sensor sheet (electrostatic) in which a conductive layer is formed on a base layer on the back side of an insulating housing (panel material) corresponding to an automobile center console or the like. A technique in which a capacitive sensor sheet) is attached is disclosed.

特開２０１２−１５４６２９号公報JP 2012-154629 A

従来、タッチパネル装置を構成するパネル材の裏面側に静電容量センサシートを貼着固定し、パネル材の表面側に加飾層を形成した場合には、加飾層によって形成された表面意匠（文字・模様・図柄など）と静電容量センサシートとの位置がズレると、加飾層の透明部分から光漏れを起こして意匠性が阻害されるおそれがあるため、加飾層に対する静電容量センサシートシートの位置決め精度（加飾層と静電容量センサシートとの位置合わせの精度）を高くする必要があった。
また、静電容量センサシートの作用範囲（作動範囲）を確保するためにも、加飾層に対する静電容量センサシートの位置決め精度を高くする必要があった。 Conventionally, when a capacitance sensor sheet is adhered and fixed to the back surface side of a panel material constituting a touch panel device, and a decorative layer is formed on the front surface side of the panel material, the surface design formed by the decorative layer ( If the position of the character / pattern / design) and the capacitance sensor sheet is misaligned, light may leak from the transparent part of the decorative layer, which may impair the design. It was necessary to increase the positioning accuracy of the sensor sheet (positioning accuracy between the decorative layer and the capacitance sensor sheet).
Moreover, in order to ensure the working range (operation range) of the capacitance sensor sheet, it is necessary to increase the positioning accuracy of the capacitance sensor sheet with respect to the decorative layer.

これは、加飾層の表面意匠のみで、加飾層と静電容量センサシートとの位置合わせと、加飾層の透明部分からの光漏れ防止との両面性が要求されるためである。
しかし、インストルメントクラスターパネルは三次元的な湾曲形状（ラウンド形状）であるため、その湾曲形状に合わせて加飾層の表面意匠を正確に位置決めして形成するのは困難であり、加飾層と静電容量センサシートとの位置決め精度を高くするのには限界があり、特に大型の製品になるほど位置決め精度を高くするのが難しくなる。
また、加飾層の不透明部分にピンホールや膜厚の薄い箇所が生じた場合には、そのピンホールや膜厚の薄い箇所から光漏れを起こすおそれがあった。 This is because only the surface design of the decorative layer is required, and both the alignment between the decorative layer and the capacitance sensor sheet and the prevention of light leakage from the transparent portion of the decorative layer are required.
However, since the instrument cluster panel has a three-dimensional curved shape (round shape), it is difficult to accurately position and form the decorative layer surface design according to the curved shape. There is a limit to increasing the positioning accuracy between the capacitor sensor sheet and the capacitance sensor sheet. In particular, the larger the product, the more difficult it is to increase the positioning accuracy.
In addition, when a pinhole or a thin film thickness occurs in the opaque portion of the decorative layer, there is a risk of light leakage from the pinhole or a thin film thickness.

本発明は前記問題を解決するためになされたものであって、以下の目的を有するものである。
（１）加飾層から光漏れを起こして意匠性が阻害されるのを防止すると共に、静電容量センサシートの作用範囲を確実に確保することが可能なタッチパネル装置を提供する。
（２）前記（１）のタッチパネル装置の簡便な製造方法を提供する The present invention has been made to solve the above problems, and has the following objects.
(1) Provided is a touch panel device that prevents light from leaking from a decorative layer and prevents design properties from being hindered, and that can surely secure an operation range of a capacitance sensor sheet.
(2) Provide a simple manufacturing method of the touch panel device of (1).

本発明者らは前記課題を解決するために鋭意検討を重ねた結果、下記のように本発明の各局面に想到した。   As a result of intensive studies in order to solve the above-mentioned problems, the present inventors have arrived at each aspect of the present invention as follows.

＜第１の局面＞
第１の局面は、
透明材料から成るパネル材と、
パネル材の表面側に形成された第１加飾層と、
パネル材の裏面側に形成された第２加飾層と、
パネル材の裏面側に貼着固定された静電容量センサシートと
を備えたタッチパネル装置であって、
各加飾層は透明部分および不透明部分を有し、各加飾層の透明部分および不透明部分は、タッチパネル装置を表面側から視た平面視にて略同一寸法形状に形成されており、各加飾層の透明部分および不透明部分がそれぞれ重なるように配置されている。 <First aspect>
The first aspect is
Panel material made of transparent material,
A first decorative layer formed on the surface side of the panel material;
A second decorative layer formed on the back side of the panel material;
A touch panel device including a capacitance sensor sheet adhered and fixed to the back side of the panel material,
Each decorative layer has a transparent portion and an opaque portion, and the transparent portion and the opaque portion of each decorative layer are formed in substantially the same size and shape in plan view when the touch panel device is viewed from the front side. It arrange | positions so that the transparent part and opaque part of a decoration layer may overlap, respectively.

第１の局面では、加飾層が第１加飾層と第２加飾層との二重構造になっているため、第１加飾層だけを設けた場合に比べて、第２加飾層を設けた分だけ、第１加飾層の不透明部分の許容寸法（許容範囲）を大きくすることができる。
また、第１の局面では、各加飾層にそれぞれピンホールや膜厚の薄い箇所が生じたとしても、各加飾層のピンホールや膜厚の薄い箇所が重なる可能性は低いため、第１加飾層のピンホールや膜厚の薄い箇所から光漏れを起こすのを防止できる。
従って、第１の局面によれば、各加飾層と静電容量センサシートとの位置ズレが生じ難くなり、各加飾層による加飾範囲と静電容量センサシートの作用範囲との位置決め精度を向上可能なため、各加飾層から光漏れを起こして意匠性が阻害されるのを防止すると共に、静電容量センサシートの作用範囲を確実に確保することができる。 In the 1st situation, since the decoration layer has the double structure of the 1st decoration layer and the 2nd decoration layer, it is the 2nd decoration compared with the case where only the 1st decoration layer is provided. The allowable dimension (allowable range) of the opaque portion of the first decorative layer can be increased by the amount of the layer provided.
In addition, in the first aspect, even if pinholes and thin portions of the film thickness are generated in each decorative layer, the pinholes and thin portions of the decorative layers are unlikely to overlap. It is possible to prevent light leakage from a pinhole in one decorative layer or a portion having a small film thickness.
Therefore, according to the 1st situation, it becomes difficult to produce position shift with each decoration layer and a capacitance sensor sheet, and positioning accuracy with the decoration range by each decoration layer, and the operation range of a capacitance sensor sheet Therefore, it is possible to prevent the design property from being disturbed by causing light leakage from each decorative layer, and to ensure the working range of the capacitance sensor sheet.

＜第２の局面＞
第２の局面は、第１の局面において、第２加飾層は静電容量センサシートの一面側に直接形成され、第２加飾層は接着層を介してパネル材の裏面側に接着固定されている。
パネル材が大型物で三次元的な湾曲形状の場合には、パネル材が成形歪みを生じ易く、第１加飾層はパネル材の表面側に形成されているため、パネル材の成形歪みの影響により、第１加飾層の透明部分および不透明部分は位置ズレを生じ易い。 <Second aspect>
According to a second aspect, in the first aspect, the second decorative layer is directly formed on one surface side of the capacitance sensor sheet, and the second decorative layer is bonded and fixed to the back surface side of the panel material via the adhesive layer. Has been.
When the panel material is large and has a three-dimensional curved shape, the panel material is likely to cause molding distortion, and the first decorative layer is formed on the surface side of the panel material. Due to the influence, the transparent portion and the opaque portion of the first decorative layer are likely to be misaligned.

第２の局面では、第２加飾層１３が静電容量センサシートの一面側に直接形成されているため、静電容量センサシートが単体物のときに平面状でパネル材に比べて小型な場合には、第２加飾層の透明部分および不透明部分を正確に位置決めして形成するのは容易であり、第２加飾層と静電容量センサシートとの位置決め精度を高くすることができる。
従って、第２の局面によれば、第１加飾層が位置ズレを生じ易くても、第２加飾層１３と静電容量センサシートとの位置決め精度を高くすることにより、第１の局面の前記作用・効果を確実に得ることができる。 In the second aspect, since the second decorative layer 13 is directly formed on one surface side of the capacitance sensor sheet, it is planar and smaller than the panel material when the capacitance sensor sheet is a single object. In this case, it is easy to accurately position and form the transparent portion and the opaque portion of the second decorative layer, and the positioning accuracy between the second decorative layer and the capacitance sensor sheet can be increased. .
Therefore, according to the second aspect, even if the first decorative layer is likely to be misaligned, the first aspect is achieved by increasing the positioning accuracy between the second decorative layer 13 and the capacitance sensor sheet. The above-mentioned actions and effects can be obtained with certainty.

＜第３の局面＞
第３の局面は、第１の局面において、第２加飾層はパネル材の裏面側に直接形成され、静電容量センサシートは接着層を介して第２加飾層に接着固定されている。
第３の局面では、第２加飾層がパネル材の裏面側に直接形成されているが、パネル材における静電容量センサシートに対向する部分のみに第２加飾層を形成すればよい。 <Third aspect>
According to a third aspect, in the first aspect, the second decorative layer is directly formed on the back side of the panel material, and the capacitance sensor sheet is bonded and fixed to the second decorative layer through the adhesive layer. .
In the third aspect, the second decorative layer is formed directly on the back surface side of the panel material, but the second decorative layer may be formed only on the portion of the panel material facing the capacitance sensor sheet.

そのため、第３の局面では、第１加飾層に比べて、第２加飾層の面積は小さくなり、第２加飾層はパネル材の成形歪みの影響を受け難くなることから、第２加飾層の透明部分および不透明部分を正確に位置決めして形成するのは容易であり、第２加飾層と静電容量センサシートとの位置決め精度を高くすることができる。
従って、第３の局面によれば、第１加飾層が位置ズレを生じ易くても、第２加飾層１３と静電容量センサシートとの位置決め精度を高くすることにより、第１の局面の前記作用・効果を確実に得ることができる。 Therefore, in the 3rd situation, since the area of the 2nd decoration layer becomes small compared with the 1st decoration layer and the 2nd decoration layer becomes difficult to receive the influence of molding distortion of a panel material, it is 2nd It is easy to accurately position and form the transparent portion and the opaque portion of the decorative layer, and the positioning accuracy between the second decorative layer and the capacitance sensor sheet can be increased.
Therefore, according to the third aspect, even if the first decorative layer is likely to be displaced, the first aspect is improved by increasing the positioning accuracy between the second decorative layer 13 and the capacitance sensor sheet. The above-mentioned actions and effects can be obtained with certainty.

＜第４の局面＞
第４の局面は、第１〜第３の局面において、
静電容量センサシートにおけるパネル材に対向する面とは反対面に形成された第３加飾層を備え、
第３加飾層は透明部分および不透明部分を有し、第３加飾層を含めた各加飾層の透明部分および不透明部分は、タッチパネル装置を表面側から視た平面視にて略同一寸法形状に形成されており、各加飾層の透明部分および不透明部分がそれぞれ重なるように配置されている。 <Fourth aspect>
The fourth aspect is the first to third aspects,
A third decorative layer formed on the surface opposite to the surface facing the panel material in the capacitance sensor sheet,
The third decorative layer has a transparent portion and an opaque portion, and the transparent portion and the opaque portion of each decorative layer including the third decorative layer have substantially the same dimensions in plan view when the touch panel device is viewed from the surface side. It is formed in a shape, and is arranged so that the transparent portion and the opaque portion of each decorative layer overlap each other.

第４の局面では、加飾層が第１〜第３加飾層の三重構造になっているため、第１の局面に比べて、第２加飾層と第３加飾層とを設けたことによる相乗効果により、第１加飾層の不透明部分の許容寸法（許容範囲）を更に大きくすることができる。
また、第４の局面では、各加飾層にそれぞれピンホールや膜厚の薄い箇所が生じたとしても、各加飾層のピンホールや膜厚の薄い箇所が重なる可能性は非常に低いため、第１の局面に比べて、第１加飾層のピンホールや膜厚の薄い箇所から光漏れを起こすのを更に確実に防止できる。
従って、第４の局面によれば、第１の局面の前記作用・効果を更に高めることができる。 In the 4th situation, since the decoration layer has the triple structure of the 1st-3rd decoration layer, compared with the 1st situation, the 2nd decoration layer and the 3rd decoration layer were provided. Due to this synergistic effect, the allowable dimension (allowable range) of the opaque portion of the first decorative layer can be further increased.
In addition, in the fourth aspect, even if pinholes and thin portions are formed in each decorative layer, the possibility of overlapping pinholes and thin portions in each decorative layer is very low. Compared to the first aspect, it is possible to more reliably prevent light leakage from a pinhole or a thin portion of the first decorative layer.
Therefore, according to the fourth aspect, the action and effect of the first aspect can be further enhanced.

＜第５の局面＞
第５の局面は、第１〜第４の局面において、パネル材は三次元的な湾曲形状の合成樹脂材料によって形成されている。
第５の局面では、パネル材の形成材料に合成樹脂材料を用いるため、ガラス材料を用いる場合に比べて、三次元的な湾曲形状を容易に形成できる。 <5th aspect>
According to a fifth aspect, in the first to fourth aspects, the panel material is formed of a synthetic resin material having a three-dimensional curved shape.
In the fifth aspect, since a synthetic resin material is used as a material for forming the panel material, a three-dimensional curved shape can be easily formed as compared with the case of using a glass material.

＜第６の局面＞
第６の局面は、第２の局面のタッチパネル装置の製造方法であって、パネル材の表面側に第１加飾層を形成する工程と、静電容量センサシートの一面側に第２加飾層を形成する工程と、第１加飾層が表面側に形成されたパネル材の裏面側に対して、第２加飾層が形成された静電容量センサシートを、第２加飾層がパネル材に対向するように配置し、パネル材の裏面側に接着層を介して第２加飾層を貼着固定する工程とを備える。
第６の局面によれば、第２の局面のタッチパネル装置の簡便な製造方法を提供できる。 <Sixth aspect>
6th aspect is a manufacturing method of the touch panel device of the 2nd aspect, Comprising: The process of forming a 1st decoration layer in the surface side of a panel material, and 2nd decoration on the one surface side of an electrostatic capacitance sensor sheet The second decorative layer is a capacitance sensor sheet in which the second decorative layer is formed with respect to the step of forming the layer and the back side of the panel material on which the first decorative layer is formed on the front side. And a step of sticking and fixing the second decorative layer to the back side of the panel material via an adhesive layer.
According to the sixth aspect, a simple manufacturing method of the touch panel device of the second aspect can be provided.

＜第７の局面＞
第７の局面は、第３の局面のタッチパネル装置の製造方法であって、パネル材の表面側に第１加飾層を形成する工程と、パネル材の裏面側に第２加飾層を形成する工程と、第２加飾層に接着層を介して静電容量センサシートを貼着固定する工程とを備える。
第７の局面によれば、第３の局面のタッチパネル装置の簡便な製造方法を提供できる。 <Seventh aspect>
7th aspect is a manufacturing method of the touch panel device of the 3rd aspect, Comprising: The process of forming the 1st decoration layer in the surface side of a panel material, and forming the 2nd decoration layer in the back surface side of a panel material And a step of attaching and fixing the capacitance sensor sheet to the second decorative layer via an adhesive layer.
According to the seventh aspect, a simple manufacturing method of the touch panel device of the third aspect can be provided.

＜第８の局面＞
第８の局面は、第６の局面または第７の局面のタッチパネル装置の製造方法であって、第２加飾層を印刷によって形成する工程を備える。
第８の局面では、第２加飾層を容易に形成することが可能であり、第６の局面または第７の局面を確実に実現することができる。 <Eighth aspect>
The eighth aspect is a method for manufacturing the touch panel device according to the sixth aspect or the seventh aspect, and includes a step of forming the second decorative layer by printing.
In the eighth aspect, the second decorative layer can be easily formed, and the sixth aspect or the seventh aspect can be reliably realized.

本発明を具体化した第１実施形態のタッチパネル装置１０の概略構成を示す縦断面図であり、図２に示すＸ−Ｘ矢示断面図。It is a longitudinal cross-sectional view which shows schematic structure of the touchscreen apparatus 10 of 1st Embodiment which actualized this invention, and is XX arrow sectional drawing shown in FIG. タッチパネル装置１０が設置された自動車のインストルメントクラスターパネルを構成するセンターパネル２０の正面図。The front view of the center panel 20 which comprises the instrument cluster panel of the motor vehicle in which the touch panel apparatus 10 was installed. タッチパネル装置１０のパネル材１１および第１加飾層１２の製造方法を説明するための概略断面図。The schematic sectional drawing for demonstrating the manufacturing method of the panel material 11 of the touchscreen apparatus 10, and the 1st decoration layer 12. FIG. タッチパネル装置１０のパネル材１１および第１加飾層１２の製造方法を説明するための概略断面図。The schematic sectional drawing for demonstrating the manufacturing method of the panel material 11 of the touchscreen apparatus 10, and the 1st decoration layer 12. FIG. タッチパネル装置１０の作用・効果を説明するための縦断面図であり、図５（Ａ）はタッチパネル装置１０の縦断面図、図５（Ｂ）は従来のタッチパネル装置１００の断面図。5A and 5B are longitudinal sectional views for explaining the operation and effect of the touch panel device 10, in which FIG. 5A is a longitudinal sectional view of the touch panel device 10, and FIG. 本発明を具体化した第２実施形態のタッチパネル装置４０の概略構成を示す縦断面図であり、図２に示すＸ−Ｘ矢示断面図。It is a longitudinal cross-sectional view which shows schematic structure of the touchscreen apparatus 40 of 2nd Embodiment which actualized this invention, and is XX arrow sectional drawing shown in FIG. 本発明を具体化した第３実施形態のタッチパネル装置５０の概略構成を示す縦断面図であり、図２に示すＸ−Ｘ矢示断面図。It is a longitudinal cross-sectional view which shows schematic structure of the touchscreen apparatus 50 of 3rd Embodiment which actualized this invention, and is XX arrow sectional drawing shown in FIG.

以下、本発明を具体化した各実施形態について図面を参照しながら説明する。尚、各実施形態において、同一の構成部材および構成要素については符号を等しくすると共に、同一内容の箇所については重複説明を省略する。
また、各図面では、説明を分かり易くするために、各実施形態の構成部材の寸法形状および配置箇所を誇張して模式的に図示してあり、各構成部材の寸法形状および配置箇所が実物とは必ずしも一致しないことがある。 Hereinafter, embodiments embodying the present invention will be described with reference to the drawings. In each embodiment, the same constituent members and constituent elements are denoted by the same reference numerals, and redundant description of the same contents is omitted.
Moreover, in each drawing, in order to make the explanation easy to understand, the dimensional shape and arrangement location of the constituent members of each embodiment are schematically illustrated in an exaggerated manner, and the dimensional shape and arrangement location of each constituent member are the real thing. May not always match.

＜第１実施形態＞
図１に示すように、第１実施形態のタッチパネル装置１０は、パネル材１１、第１加飾層１２（透明部分１２ａ、不透明部分１２ｂ、ピンホール１２ｃ）、第２加飾層１３（透明部分１３ａ、不透明部分１３ｂ、ピンホール１３ｃ）、接着層１４、静電容量センサシート１５を備える。
タッチパネル装置１０の裏面側には、ＬＥＤ（Light Emitting Diode）や電球などの光源LSが配置されている。 <First Embodiment>
As shown in FIG. 1, the touch panel device 10 according to the first embodiment includes a panel material 11, a first decorative layer 12 (transparent portion 12a, opaque portion 12b, pinhole 12c), and a second decorative layer 13 (transparent portion). 13a, opaque portion 13b, pinhole 13c), adhesive layer 14 and capacitance sensor sheet 15.
On the back side of the touch panel device 10, a light source LS such as an LED (Light Emitting Diode) or a light bulb is disposed.

パネル材（基材）１１は、板厚が略均一な板状の透明な合成樹脂材料によって形成されており、パネル材１１の形成材料には、例えば、ＰＰ（PolyPropylene）、ＴＰＯ（Thermo PolyOlefin）、ＰＶＣ（PolyVinyl Chloride）、ＰＣ（PolyCarbonate）、ＰＭＭＡ（PolyMethylMethacrylate）、ＣＯＰ（Cyclo Olefin Polymer）、ＡＢＳ（Acrylonitrile-Butadiene-Styrene resin）、ＰＥＴ（PolyEthylene Terephthalate）、ＰＥ（PolyEthylene）、ポリウレタン、ポリイソソルバイドなどがある。
パネル材１１の板厚は約２．０〜３．５mmである。 The panel material (base material) 11 is formed of a plate-shaped transparent synthetic resin material having a substantially uniform plate thickness. Examples of the material for forming the panel material 11 include PP (PolyPropylene) and TPO (Thermo PolyOlefin). , PVC (PolyVinyl Chloride), PC (PolyCarbonate), PMMA (PolyMethyl Methacrylate), COP (Cyclo Olefin Polymer), ABS (Acrylonitrile-Butadiene-Styrene resin), PET (PolyEthylene Terephthalate), PE (PolyEthylene), Polyurethane, Polyisosol There is a bid.
The panel material 11 has a thickness of about 2.0 to 3.5 mm.

第１加飾層１２は、透明部分１２ａおよび不透明部分（光遮蔽部分）１２ｂを有する合成樹脂塗料から成り、パネル材１１の表面側（タッチパネル装置１０の表面側）に対して直接に印刷形成されている。
第２加飾層１３は、透明部分１３ａおよび不透明部分１２ｂを有する合成樹脂塗料から成り、接着層１４を介してパネル材１１の裏面側（タッチパネル装置１０の裏面側）に形成されている。
各加飾層１２，１３は、透明部分１２ａ，１３ａおよび不透明部分１２ｂ，１３ｂにより表面意匠（文字・模様・図柄など）を形成する。 The first decorative layer 12 is made of a synthetic resin paint having a transparent portion 12a and an opaque portion (light shielding portion) 12b, and is directly printed on the surface side of the panel material 11 (the surface side of the touch panel device 10). ing.
The second decorative layer 13 is made of a synthetic resin paint having a transparent portion 13a and an opaque portion 12b, and is formed on the back side of the panel material 11 (the back side of the touch panel device 10) via the adhesive layer 14.
Each decorative layer 12, 13 forms a surface design (characters, patterns, designs, etc.) with transparent portions 12a, 13a and opaque portions 12b, 13b.

各加飾層１２，１３の透明部分１２ａ，１３ａおよび不透明部分１２ｂ，１３ｂは、タッチパネル装置１０を表面側から視た平面視にて略同一寸法形状に形成されており、各透明部分１２ａ，１３ａおよび各不透明部分１２ｂ，１３ｂがそれぞれ重なるように配置されている。
各加飾層１２，１３の不透明部分１２ｂ，１３ｂには、各加飾層１２，１３に不要に生じた透孔であるピンホール１２ｃ，１３ｃが形成されている。
各加飾層１２，１３の形成材料には、例えば、ＰＣ、ＰＥＴ、ＰＭＭＡ、ＣＯＰなどがある。
各加飾層１２，１３の膜厚は約２〜５０μｍである。 The transparent portions 12a and 13a and the opaque portions 12b and 13b of the decorative layers 12 and 13 are formed in substantially the same size and shape in a plan view when the touch panel device 10 is viewed from the surface side, and the transparent portions 12a and 13a are formed. The opaque portions 12b and 13b are arranged so as to overlap each other.
Pinholes 12c and 13c, which are through holes generated unnecessarily in the decorative layers 12 and 13, are formed in the opaque portions 12b and 13b of the decorative layers 12 and 13, respectively.
Examples of the material for forming the decorative layers 12 and 13 include PC, PET, PMMA, and COP.
The film thickness of each decoration layer 12 and 13 is about 2-50 micrometers.

接着層１４は、第２加飾層１３とパネル材１１とを接着固定する透明材料から成り、接着層１４の形成材料には、例えば、高透明性接着剤転写テープ（ＯＣＡテープ：Optically Clear Adhesive Tape）などがある。
接着層１４の膜厚は約２０〜７０μｍである。 The adhesive layer 14 is made of a transparent material that adheres and fixes the second decorative layer 13 and the panel material 11. Examples of the material for forming the adhesive layer 14 include a highly transparent adhesive transfer tape (OCA tape: Optically Clear Adhesive). Tape).
The film thickness of the adhesive layer 14 is about 20 to 70 μm.

静電容量センサシート（静電容量フィルムセンサ）１５は、絶縁性の基材フィルム層（図示略）と、その基材フィルム層に複数の電極パターンと導電引回しラインとが形成される導電層（図示略）と、その導電層を被覆する絶縁性の保護カバー層（図示略）などを備え、静電容量センサシート１５を構成する各層は透明材料によって形成されている。
また、静電容量センサシート１５は可撓性を有しており、外力が印加されない単体物のときには平面状である。
尚、静電容量センサシート１５の構成は公知技術（例えば、特許文献１を参照）であるため説明を省略する。
第２加飾層１３は、静電容量センサシート１５の一面側（パネル材１１に対向する面側）に対して直接に印刷形成されている。 The capacitance sensor sheet (capacitance film sensor) 15 includes an insulating base film layer (not shown) and a conductive layer in which a plurality of electrode patterns and conductive lead lines are formed on the base film layer. (Not shown) and an insulating protective cover layer (not shown) covering the conductive layer, etc., and each layer constituting the capacitance sensor sheet 15 is made of a transparent material.
Further, the capacitance sensor sheet 15 has flexibility, and has a planar shape when it is a single object to which no external force is applied.
In addition, since the structure of the electrostatic capacitance sensor sheet | seat 15 is a well-known technique (for example, refer patent document 1), description is abbreviate | omitted.
The second decorative layer 13 is directly printed on the one surface side of the capacitance sensor sheet 15 (the surface side facing the panel material 11).

図２に示すように、タッチパネル装置１０は、自動車のインストルメントクラスターパネルを構成するセンターパネル２０に設置されており、タッチパネル装置１０のパネル材１１はセンターパネル２０のパネル材と共用されている。
図２に示す例では、各加飾層１２，１３の透明部分１２ａ，１３ａの平面視形状が矩形状であり、各透明部分１２ａ，１３ａはタッチパネル装置１０のスイッチ部分を示す表面意匠を形成している。 As shown in FIG. 2, the touch panel device 10 is installed on a center panel 20 that forms an instrument cluster panel of an automobile, and the panel material 11 of the touch panel device 10 is shared with the panel material of the center panel 20.
In the example illustrated in FIG. 2, the transparent portions 12 a and 13 a of the decorative layers 12 and 13 have a rectangular shape in plan view, and the transparent portions 12 a and 13 a form a surface design indicating a switch portion of the touch panel device 10. ing.

そして、タッチパネル装置１０のユーザーの指先が、第１加飾層１２の表面に触れると、第１加飾層１２の裏面側の静電容量センサシート１５とユーザーの人体との間に存在する静電容量（浮遊容量）が変化するため、その静電容量の変化に基づいて、ユーザーが第１加飾層１２のスイッチ部分に該当する透明部分１２ａに触れたことを、静電容量センサシート１５によって検出できる。
尚、静電容量の変化の具体的な検出方法については、公知技術（例えば、特許文献１を参照）であるため説明を省略する。 Then, when the fingertip of the user of the touch panel device 10 touches the surface of the first decorative layer 12, the static that exists between the capacitance sensor sheet 15 on the back surface side of the first decorative layer 12 and the user's human body. Since the capacitance (floating capacitance) changes, the capacitance sensor sheet 15 indicates that the user has touched the transparent portion 12a corresponding to the switch portion of the first decorative layer 12 based on the change in capacitance. Can be detected.
Note that a specific method for detecting a change in capacitance is a known technique (see, for example, Patent Document 1), and thus description thereof is omitted.

タッチパネル装置１０の裏面側に配置された光源LSが発光すると、その光源LSの放射光は、静電容量センサシート１５→第２加飾層１３の透明部分１３ａ→接着層１４→パネル材１１→第１加飾層１２の透明部分１２ａという順番で透過し、タッチパネル装置１０の表面側から放射される。
そのため、各加飾層１２，１３の透明部分１２ａ，１３ａが明るく照明され、タッチパネル装置１０を視たユーザーは、各加飾層１２，１３のスイッチ部分である透明部分１２ａ，１３ａを容易に視認することができる。 When the light source LS arranged on the back side of the touch panel device 10 emits light, the emitted light of the light source LS is changed from the capacitance sensor sheet 15 to the transparent portion 13a of the second decorative layer 13 → the adhesive layer 14 → the panel material 11 → The light passes through the transparent portions 12 a of the first decorative layer 12 and is emitted from the surface side of the touch panel device 10.
Therefore, the transparent portions 12a and 13a of the decorative layers 12 and 13 are brightly illuminated, and the user who views the touch panel device 10 can easily visually recognize the transparent portions 12a and 13a that are the switch portions of the decorative layers 12 and 13. can do.

［タッチパネル装置１０の製造方法］
タッチパネル装置１０のパネル材１１および第１加飾層１２を製造するには、まず、図３（Ａ）に示すように、均一な膜厚で平坦なベースフィルム（支持フィルム、キャリアフィルム）３０の表面上に第１加飾層１２が印刷された転写用フィルム（加飾用フィルム）３１を作製し、その転写用フィルム３１を射出成形機の金型３２ａ，３２ｂ間に送り込む。
ベースフィルム３０の形成材料には、例えば、ＰＭＭＡ、ＰＥＴ、ＰＥ、ポリウレタンなどがある。 [Manufacturing Method of Touch Panel Device 10]
In order to manufacture the panel material 11 and the first decorative layer 12 of the touch panel device 10, first, as shown in FIG. 3 (A), a flat base film (support film, carrier film) 30 having a uniform film thickness is formed. A transfer film (decorative film) 31 having the first decorative layer 12 printed on the surface is produced, and the transfer film 31 is fed between the molds 32a and 32b of the injection molding machine.
Examples of the material for forming the base film 30 include PMMA, PET, PE, and polyurethane.

次に、図３（Ｂ）に示すように、転写用フィルム３１を射出成形機の金型３２ａ，３２ｂ内に挟み込み、可動側の金型３２ａと転写用フィルム３１との間隙ＧＲに、金型３２ａの成形樹脂噴射口３２ｃからパネル材１１の形成材料を射出させ、インモールド転写成形法により、パネル材１１の射出成形と同時に、転写用フィルム３１に印刷された第１加飾層１２をパネル材１１の表面側に転写させる。
続いて、図４（Ａ）に示すように、固定側の金型３２ｂから可動側の金型３２ａを引き離して型開きし、パネル材１１からベースフィルム３０のみを剥離させて除去することにより、第１加飾層１２が形成されたパネル材１１を作製する。
その後、図４（Ｂ）に示すように、射出成形機の金型３２ａ，３２ｂから、第１加飾層１２が形成されたパネル材１１を取り出す。 Next, as shown in FIG. 3B, the transfer film 31 is sandwiched between the molds 32a and 32b of the injection molding machine, and the mold is inserted into the gap GR between the movable mold 32a and the transfer film 31. The forming material of the panel material 11 is injected from the molding resin injection port 32c of 32a, and the first decorative layer 12 printed on the transfer film 31 is formed on the panel simultaneously with the injection molding of the panel material 11 by the in-mold transfer molding method. Transfer to the surface side of the material 11.
Subsequently, as shown in FIG. 4A, the movable side mold 32a is separated from the fixed side mold 32b to open the mold, and only the base film 30 is peeled off from the panel material 11 and removed. The panel material 11 in which the 1st decoration layer 12 was formed is produced.
Thereafter, as shown in FIG. 4B, the panel material 11 on which the first decorative layer 12 is formed is taken out from the molds 32a and 32b of the injection molding machine.

それとは別に、静電容量センサシート１５の一面側に、各種印刷法（例えば、スクリーン印刷、パッド印刷、ドクターコーティングなど）を用いて第２加飾層１３を印刷することにより、第２加飾層１３が形成された静電容量センサシート１５を作製する。
ここで、第２加飾層１３は各種印刷法を用いれば容易に形成することができる。
そして、第１加飾層１２が表面側に形成されたパネル材１１の裏面側に対して、第２加飾層１３が形成された静電容量センサシート１５を、第２加飾層１３がパネル材１１に対向するように配置し、パネル材１１の裏面側に接着層１４を介して第２加飾層１３を貼着固定することにより、タッチパネル装置１０を簡便に製造することができる。 Separately, the second decoration layer 13 is printed on the one surface side of the capacitance sensor sheet 15 by using various printing methods (for example, screen printing, pad printing, doctor coating, etc.), thereby providing the second decoration. The capacitance sensor sheet 15 on which the layer 13 is formed is produced.
Here, the second decorative layer 13 can be easily formed by using various printing methods.
And with respect to the back surface side of the panel material 11 in which the 1st decoration layer 12 was formed in the surface side, the 2nd decoration layer 13 is the electrostatic capacitance sensor sheet 15 in which the 2nd decoration layer 13 was formed. The touch panel device 10 can be easily manufactured by disposing the panel member 11 so as to face the panel member 11 and sticking and fixing the second decorative layer 13 to the back surface side of the panel member 11 via the adhesive layer 14.

尚、第１加飾層１２が形成されたパネル材１１を作製するには、インモールド転写成形法に限らず、インサートモールド（フィルムインサート）成形法、インサート成形法などを用いてもよい。
また、射出成形により作製したパネル材１１の表面側に、各種印刷法を用いて第１加飾層１２を印刷してもよい。 In addition, in order to produce the panel material 11 in which the 1st decoration layer 12 was formed, you may use not only an in-mold transfer molding method but an insert mold (film insert) molding method, an insert molding method, etc.
Moreover, you may print the 1st decorating layer 12 on the surface side of the panel material 11 produced by injection molding using various printing methods.

［第１実施形態の作用・効果］
図５（Ｂ）に示すように、従来のタッチパネル装置１００では、第１加飾層１２だけが設けられており、第２加飾層１３は設けられていない。
図２に示すように、パネル材１１は自動車のインストルメントクラスターパネルを構成するセンターパネル２０のパネル材と共用であり、センターパネル２０は三次元的な湾曲形状（ラウンド形状）であるため、パネル材１１は成形歪みを生じ易い。
そして、第１加飾層１２はパネル材１１の表面側に対して直接に印刷形成されているため、パネル材１１の成形歪みの影響により、第１加飾層１２の透明部分１２ａおよび不透明部分１２ｂは位置ズレを生じ易い。 [Operations and effects of the first embodiment]
As shown in FIG. 5B, in the conventional touch panel device 100, only the first decorative layer 12 is provided, and the second decorative layer 13 is not provided.
As shown in FIG. 2, the panel material 11 is shared with the panel material of the center panel 20 constituting the instrument cluster panel of the automobile, and the center panel 20 has a three-dimensional curved shape (round shape). The material 11 tends to cause molding distortion.
And since the 1st decoration layer 12 is directly printed and formed with respect to the surface side of the panel material 11, by the influence of the shaping | molding distortion of the panel material 11, the transparent part 12a and the opaque part of the 1st decoration layer 12 12b tends to cause a positional shift.

すなわち、湾曲形状であるパネル材１１に合わせて、第１加飾層１２の透明部分１２ａおよび不透明部分１２ｂから成る表面意匠を正確に位置決めして形成するのは困難であり、第１加飾層１２と静電容量センサシート１５との位置決め精度を高くするのには限界があり、特にパネル材１１が大型になるほど位置決め精度を高くするのが難しくなる。
そのため、従来のタッチパネル装置１００では、第１加飾層１２の透明部分１２ａと静電容量センサシート１５の電極パターン（図示略）との位置ズレにより、透明部分１２ａから光漏れを起こして意匠性が阻害されることに加え、静電容量センサシートの作用範囲（作動範囲）が確保できなくなるという問題があった。 That is, it is difficult to accurately position and form the surface design composed of the transparent portion 12a and the opaque portion 12b of the first decorative layer 12 in accordance with the panel material 11 having a curved shape. There is a limit to increasing the positioning accuracy between the sensor 12 and the capacitance sensor sheet 15, and it is particularly difficult to increase the positioning accuracy as the panel material 11 becomes larger.
Therefore, in the conventional touch panel device 100, due to the positional deviation between the transparent portion 12a of the first decorative layer 12 and the electrode pattern (not shown) of the capacitance sensor sheet 15, the light leaks from the transparent portion 12a and is designed. In addition to being obstructed, there is a problem that it is impossible to secure the working range (operating range) of the capacitance sensor sheet.

それに対して、図５（Ａ）に示すように、第１実施形態のタッチパネル装置１０では、第１加飾層１２に加えて第２加飾層１３が設けられており、加飾層が二重構造になっている。
ここで、静電容量センサシート１５は、パネル材１１に貼着固定される以前の外力が印加されない単体物のときには平面状であり、パネル材１１に比べて小型である。
そして、第２加飾層１３は、単体物である静電容量センサシート１５の一面側に対して直接に印刷形成されているため、第２加飾層１３の透明部分１３ａおよび不透明部分１３ｂから成る表面意匠を正確に位置決めして形成するのは容易であり、第２加飾層１３と静電容量センサシート１５との位置決め精度を高くすることができる。 On the other hand, as shown to FIG. 5 (A), in the touch panel apparatus 10 of 1st Embodiment, in addition to the 1st decorating layer 12, the 2nd decorating layer 13 is provided, and 2 decorating layers are provided. It has a heavy structure.
Here, the capacitance sensor sheet 15 is planar when it is a single object to which an external force before being applied and fixed to the panel material 11 is not applied, and is smaller than the panel material 11.
And since the 2nd decoration layer 13 is directly printed and formed with respect to the one surface side of the electrostatic capacitance sensor sheet | seat 15 which is a single-piece | unit, from the transparent part 13a and the opaque part 13b of the 2nd decoration layer 13 It is easy to accurately position and form the formed surface design, and the positioning accuracy between the second decorative layer 13 and the capacitance sensor sheet 15 can be increased.

そのため、図５（Ａ）に示すように、第１実施形態のタッチパネル装置１０では、第２加飾層１３を設けた分だけ、図５（Ｂ）に示す従来のタッチパネル装置１００に比べて、第１加飾層１２の不透明部分１２ｂの許容寸法Ｐａ，Ｐｂを大きくすることができる（例えば、Ｐａ，Ｐｂ＝約１〜２mm）。   Therefore, as shown in FIG. 5 (A), in the touch panel device 10 according to the first embodiment, compared with the conventional touch panel device 100 shown in FIG. Allowable dimensions Pa and Pb of the opaque portion 12b of the first decorative layer 12 can be increased (for example, Pa and Pb = about 1 to 2 mm).

また、図５（Ｂ）に示すように、従来のタッチパネル装置１００では、第１加飾層１２にピンホール１２ｃが生じると、そのピンホール１２ｃから光漏れを起こすという問題があった。
それに対して、図５（Ａ）に示すように、第１実施形態のタッチパネル装置１０では、各加飾層１２，１３にそれぞれピンホール１２ｃ，１３ｃが生じたとしても、各加飾層１２，１３のピンホール１２ｃ，１３ｃが重なる可能性は低いため、第１加飾層１２のピンホール１２ｃから光漏れを起こすのを防止できる。 Further, as shown in FIG. 5B, in the conventional touch panel device 100, when a pinhole 12c is generated in the first decorative layer 12, there is a problem that light leaks from the pinhole 12c.
On the other hand, as shown in FIG. 5A, in the touch panel device 10 of the first embodiment, even if the pinholes 12c and 13c are generated in the decorative layers 12 and 13, respectively, the decorative layers 12 and 13 are provided. Since it is unlikely that the 13 pinholes 12c and 13c overlap, light leakage from the pinhole 12c of the first decorative layer 12 can be prevented.

そして、従来のタッチパネル装置１００では、第１加飾層１２に膜厚の薄い箇所が生じた場合にも、ピンホール１２ｃの場合と同様に、第１加飾層１２の膜厚の薄い箇所から光漏れを起こすという問題があった。
それに対して、第１実施形態のタッチパネル装置１０では、各加飾層１２，１３にそれぞれ膜厚が薄い箇所が生じたとしても、各加飾層１２，１３における膜厚の薄い箇所が重なる可能性は低いため、第１加飾層１２の膜厚の薄い箇所から光漏れを起こすおそれがほとんど無い。 And in the conventional touch panel apparatus 100, even when the thin film thickness location arises in the 1st decoration layer 12, it is from the thin film thickness location of the 1st decoration layer 12 similarly to the case of the pinhole 12c. There was a problem of light leakage.
On the other hand, in the touch panel device 10 according to the first embodiment, even if the thin portions of the decorative layers 12 and 13 are generated, the thin portions of the decorative layers 12 and 13 may overlap. Since the property is low, there is almost no risk of light leakage from the thin portion of the first decorative layer 12.

以上のように、第１実施形態のタッチパネル装置１０では、各加飾層１２，１３の透明部分１２ａ，１３ａと静電容量センサシート１５の電極パターン（図示略）との位置ズレが生じ難くなり、各加飾層１２，１３による加飾範囲と静電容量センサシート１５の作用範囲との位置決め精度を向上できる。
従って、第１実施形態のタッチパネル装置１０によれば、各加飾層１２，１３から光漏れを起こして意匠性が阻害されるのを防止すると共に、静電容量センサシート１５の作用範囲を確実に確保することができる。
また、パネル材１１は、三次元的な湾曲形状の合成樹脂材料によって形成されているため、ガラス材料を用いる場合に比べて、三次元的な湾曲形状を容易に形成できる。 As described above, in the touch panel device 10 according to the first embodiment, it is difficult for positional deviation between the transparent portions 12a and 13a of the decorative layers 12 and 13 and the electrode pattern (not shown) of the capacitance sensor sheet 15 to occur. The positioning accuracy between the decoration range by the decoration layers 12 and 13 and the operation range of the capacitance sensor sheet 15 can be improved.
Therefore, according to the touch panel device 10 of the first embodiment, light leakage from each of the decorative layers 12 and 13 is prevented, and the design property is prevented from being inhibited, and the working range of the capacitance sensor sheet 15 is ensured. Can be secured.
Moreover, since the panel material 11 is formed of a synthetic resin material having a three-dimensional curved shape, a three-dimensional curved shape can be easily formed as compared with the case where a glass material is used.

＜第２実施形態＞
図６に示すように、第２実施形態のタッチパネル装置４０は、パネル材１１、第１加飾層１２（透明部分１２ａ、不透明部分１２ｂ、ピンホール１２ｃ）、第２加飾層１３（透明部分１３ａ、不透明部分１３ｂ、ピンホール１３ｃ）、接着層１４、静電容量センサシート１５、第３加飾層４１（透明部分４１ａ、不透明部分４１ｂ、ピンホール４１ｃ）を備え、タッチパネル装置４０の裏面側には光源LSが配置されている。
タッチパネル装置４０において、第１実施形態のタッチパネル装置１０と異なるのは、第３加飾層４１を備える点である。 Second Embodiment
As shown in FIG. 6, the touch panel device 40 of the second embodiment includes a panel material 11, a first decorative layer 12 (transparent portion 12a, opaque portion 12b, pinhole 12c), and a second decorative layer 13 (transparent portion). 13a, opaque portion 13b, pinhole 13c), adhesive layer 14, capacitance sensor sheet 15, and third decorative layer 41 (transparent portion 41a, opaque portion 41b, pinhole 41c), and the back side of touch panel device 40 Is provided with a light source LS.
The touch panel device 40 is different from the touch panel device 10 of the first embodiment in that a third decorative layer 41 is provided.

第３加飾層４１は、透明部分４１ａと、表面意匠を形成する不透明部分１２ｂとを有する合成樹脂塗料から成り、静電容量センサシート１５におけるパネル材１１に対向する面とは反対面（タッチパネル装置４０の裏面側）に対して直接に印刷形成されている。
各加飾層１２，１３，４１の透明部分１２ａ，１３ａ，４１ａおよび不透明部分１２ｂ，１３ｂ，４１ｂは、タッチパネル装置４０を表面側から視た平面視にて略同一寸法形状に形成されており、各透明部分１２ａ，１３ａ，４１ａおよび各不透明部分１２ｂ，１３ｂ，４１ｂがそれぞれ重なるように配置されている。
第３加飾層４１の不透明部分４１ｂには、第３加飾層４１に生じた透孔であるピンホール４１ｃが形成されている。
第３加飾層４１の形成材料は各加飾層１２，１３と同じであり、第３加飾層４１の膜厚も各加飾層１２，１３と同じである。 The 3rd decoration layer 41 consists of a synthetic resin coating material which has the transparent part 41a and the opaque part 12b which forms a surface design, and is a surface on the opposite side to the surface facing the panel material 11 in the electrostatic capacitance sensor sheet 15 (touch panel). It is printed directly on the back side of the apparatus 40.
The transparent portions 12a, 13a, 41a and the opaque portions 12b, 13b, 41b of the decorative layers 12, 13, 41 are formed in substantially the same size and shape in plan view when the touch panel device 40 is viewed from the surface side. The transparent parts 12a, 13a, 41a and the opaque parts 12b, 13b, 41b are arranged so as to overlap each other.
A pinhole 41 c that is a through hole formed in the third decorative layer 41 is formed in the opaque portion 41 b of the third decorative layer 41.
The formation material of the 3rd decoration layer 41 is the same as each decoration layer 12 and 13, and the film thickness of the 3rd decoration layer 41 is also the same as each decoration layer 12 and 13.

従って、第２実施形態のタッチパネル装置４０によれば、第１実施形態の前記作用・効果を得ることができる。
加えて、タッチパネル装置４０では、各加飾層１２，１３に加えて第３加飾層４１が設けられており、加飾層が三重構造になっている。 Therefore, according to the touch panel apparatus 40 of 2nd Embodiment, the said effect | action and effect of 1st Embodiment can be acquired.
In addition, in the touch panel device 40, the third decorative layer 41 is provided in addition to the decorative layers 12 and 13, and the decorative layer has a triple structure.

第３加飾層４１は、第２加飾層１３と同様に、単体物である静電容量センサシート１５の一面側に対して直接に印刷形成されているため、第３加飾層４１の透明部分４１ａおよび不透明部分４１ｂから成る表面意匠を正確に位置決めして形成するのは容易であり、第３加飾層４１と静電容量センサシート１５との位置決め精度を高くすることができる。
そのため、第２実施形態のタッチパネル装置４０では、各加飾層１３，４１を設けたことによる相乗効果により、第１加飾層１２の不透明部分１２ｂの許容寸法（許容範囲）を更に大きくすることができる。 Since the 3rd decoration layer 41 is directly printed and formed with respect to the one surface side of the capacitance sensor sheet 15 which is a single substance like the 2nd decoration layer 13, the 3rd decoration layer 41 It is easy to accurately position and form the surface design composed of the transparent portion 41a and the opaque portion 41b, and the positioning accuracy between the third decorative layer 41 and the capacitance sensor sheet 15 can be increased.
Therefore, in the touch panel device 40 of the second embodiment, the allowable dimension (allowable range) of the opaque portion 12b of the first decorative layer 12 is further increased due to the synergistic effect by providing the decorative layers 13 and 41. Can do.

また、第２実施形態のタッチパネル装置４０では、各加飾層１２，１３，４１にそれぞれピンホール１２ｃ，１３ｃ，４１ｃや膜厚の薄い箇所が生じたとしても、各加飾層１２，１３，４１のピンホール１２ｃ，１３ｃ，４１ｃや膜厚の薄い箇所が重なる可能性は非常に低いため、第１実施形態のタッチパネル装置１０に比べて、第１加飾層１２のピンホール１２ｃや膜厚の薄い箇所から光漏れを起こすのを更に確実に防止できる。   Further, in the touch panel device 40 of the second embodiment, even if pinholes 12c, 13c, 41c and thin portions are formed in the decorative layers 12, 13, 41, the decorative layers 12, 13, The pinholes 12c, 13c, 41c of 41 and the thin film thickness are unlikely to overlap each other. Therefore, compared to the touch panel device 10 of the first embodiment, the pinhole 12c and film thickness of the first decorative layer 12 It is possible to more reliably prevent light leakage from a thin portion of the plate.

＜第３実施形態＞
図７に示すように、第３実施形態のタッチパネル装置５０は、パネル材１１、第１加飾層１２（透明部分１２ａ、不透明部分１２ｂ、ピンホール１２ｃ）、第２加飾層１３（透明部分１３ａ、不透明部分１３ｂ、ピンホール１３ｃ）、接着層１４、静電容量センサシート１５を備え、タッチパネル装置４０の裏面側には光源LSが配置されている。 <Third Embodiment>
As shown in FIG. 7, the touch panel device 50 of the third embodiment includes a panel material 11, a first decorative layer 12 (transparent portion 12a, opaque portion 12b, pinhole 12c), and a second decorative layer 13 (transparent portion). 13 a, opaque portion 13 b, pinhole 13 c), adhesive layer 14, and capacitance sensor sheet 15, and a light source LS is disposed on the back side of the touch panel device 40.

タッチパネル装置５０において、第１実施形態のタッチパネル装置１０と異なるのは、第２加飾層１３と接着層１４の配置箇所が入れ替わっている点である。
すなわち、第２加飾層１３はパネル材１１の裏面側に直接形成され、静電容量センサシート１５は接着層１４を介して第２加飾層１３に接着固定されている、 The touch panel device 50 is different from the touch panel device 10 of the first embodiment in that the arrangement positions of the second decorative layer 13 and the adhesive layer 14 are interchanged.
That is, the second decorative layer 13 is directly formed on the back surface side of the panel material 11, and the capacitance sensor sheet 15 is bonded and fixed to the second decorative layer 13 via the adhesive layer 14.

タッチパネル装置５０を製造するには、まず、第１実施形態と同様に、第１加飾層１２が表面側に形成されたパネル材１１を作製する。
次に、第１加飾層１２が表面側に形成されたパネル材１１の裏面側に、各種印刷法を用いて第２加飾層１３を印刷する。
そして、第２加飾層１３に接着層１４を介して静電容量センサシート１５を貼着固定することにより、タッチパネル装置５０を簡便に製造することができる。 In order to manufacture the touch panel device 50, first, as in the first embodiment, the panel material 11 having the first decorative layer 12 formed on the surface side is prepared.
Next, the 2nd decorating layer 13 is printed on the back surface side of the panel material 11 in which the 1st decorating layer 12 was formed in the surface side using various printing methods.
The touch panel device 50 can be easily manufactured by sticking and fixing the capacitance sensor sheet 15 to the second decorative layer 13 via the adhesive layer 14.

第３実施形態のタッチパネル装置５０では、第２加飾層１３がパネル材１１の裏面側に対して直接に印刷形成されているが、パネル材１１における静電容量センサシート１５に対向する部分のみに第２加飾層１３を形成すればよい。
そのため、第１加飾層１２に比べて、第２加飾層１３の面積は小さくなり、第２加飾層１３はパネル材１１の成形歪みの影響を受け難くなることから、第２加飾層１３の透明部分１３ａおよび不透明部分１３ｂから成る表面意匠を正確に位置決めして形成するのは容易であり、第２加飾層１３と静電容量センサシート１５との位置決め精度を高くすることができる。
従って、第３実施形態のタッチパネル装置５０でも、第１実施形態と同様の作用・効果を得ることができる。 In the touch panel device 50 of the third embodiment, the second decorative layer 13 is printed and formed directly on the back surface side of the panel material 11, but only the portion of the panel material 11 that faces the capacitance sensor sheet 15. The 2nd decoration layer 13 should just be formed.
Therefore, the area of the 2nd decoration layer 13 becomes small compared with the 1st decoration layer 12, and since the 2nd decoration layer 13 becomes difficult to receive to the influence of the shaping | molding distortion of the panel material 11, it is the 2nd decoration. It is easy to accurately position and form the surface design composed of the transparent portion 13a and the opaque portion 13b of the layer 13, and the positioning accuracy between the second decorative layer 13 and the capacitance sensor sheet 15 can be increased. it can.
Accordingly, the touch panel device 50 according to the third embodiment can obtain the same operations and effects as those of the first embodiment.

＜別の実施形態＞
本発明は前記各実施形態に限定されるものではなく、以下のように具体化してもよく、その場合でも、前記各実施形態と同等もしくはそれ以上の作用・効果を得ることができる。 <Another embodiment>
The present invention is not limited to the above-described embodiments, and may be embodied as follows. Even in this case, operations and effects equivalent to or higher than those of the above-described embodiments can be obtained.

［１］パネル材１１は、合成樹脂材料に限らず、ガラス材料によって形成してもよい。   [1] The panel material 11 is not limited to a synthetic resin material, and may be formed of a glass material.

［２］前記各実施形態は、自動車のインストルメントクラスターパネルに用いられるタッチパネル装置１０，４０，５０に適用したものであるが、本発明は、インストルメントクラスターパネルに限らず、どのような機器（例えば、自動車のセンターコンソールやオーバーヘッドコンソール、コンピュータ機器、家電製品など）に設置されるタッチパネル装置に適用してもよい。   [2] Each of the above embodiments is applied to the touch panel devices 10, 40, and 50 used for the instrument cluster panel of the automobile. However, the present invention is not limited to the instrument cluster panel, and any device ( For example, the present invention may be applied to a touch panel device installed in a car center console, an overhead console, a computer device, a household appliance, or the like.

［３］前記各実施形態を適宜組み合わせて実施してもよく、その場合には組み合わせた実施形態の作用・効果を合わせもたせたり、相乗効果を得ることができる。   [3] The embodiments described above may be combined as appropriate, in which case the actions and effects of the combined embodiments can be combined or a synergistic effect can be obtained.

本発明は、前記各局面および前記各実施形態の説明に何ら限定されるものではない。特許請求の範囲の記載を逸脱せず、当業者が容易に想到できる範囲で種々の変形態様も本発明に含まれる。本明細書の中で明示した公報などの内容は、その全ての内容を援用によって引用することとする。   The present invention is not limited to the description of each aspect and each embodiment. Various modifications are also included in the present invention as long as those skilled in the art can easily conceive without departing from the scope of the claims. The contents of publications and the like specified in the present specification are all incorporated by reference.

１０，４０，５０…タッチパネル装置
１１…パネル材
１２…第１加飾層
１３…第２加飾層
４１…第３加飾層
１２ａ，１３ａ，４１ａ…透明部分
１２ｂ，１３ｂ，４１ｂ…不透明部分
１２ｃ，１３ｃ，４１ｃ…ピンホール
１４…接着層
１５…静電容量センサシート
２０…センターパネル
LS…光源 DESCRIPTION OF SYMBOLS 10, 40, 50 ... Touch panel apparatus 11 ... Panel material 12 ... 1st decoration layer 13 ... 2nd decoration layer 41 ... 3rd decoration layer 12a, 13a, 41a ... Transparent part 12b, 13b, 41b ... Opaque part 12c , 13c, 41c ... pinhole 14 ... adhesive layer 15 ... capacitance sensor sheet 20 ... center panel
LS ... Light source

Claims (8)

透明材料から成るパネル材と、
前記パネル材の表面側に形成された第１加飾層と、
前記パネル材の裏面側に形成された第２加飾層と、
前記パネル材の裏面側に貼着固定された静電容量センサシートと
を備えたタッチパネル装置であって、
前記各加飾層は透明部分および不透明部分を有し、前記各加飾層の前記透明部分および前記不透明部分は、タッチパネル装置を表面側から視た平面視にて略同一寸法形状に形成されており、前記各加飾層の前記透明部分および前記不透明部分がそれぞれ重なるように配置されているタッチパネル装置。 Panel material made of transparent material,
A first decorative layer formed on the surface side of the panel material;
A second decorative layer formed on the back side of the panel material;
A touch panel device comprising a capacitance sensor sheet adhered and fixed to the back side of the panel material,
Each decorative layer has a transparent portion and an opaque portion, and the transparent portion and the opaque portion of each decorative layer are formed in substantially the same size and shape in a plan view when the touch panel device is viewed from the surface side. The touch panel device is arranged so that the transparent portion and the opaque portion of each decorative layer overlap each other. 前記第２加飾層は前記静電容量センサシートの一面側に直接形成され、前記第２加飾層は接着層を介して前記パネル材の裏面側に接着固定されている、
請求項１に記載のタッチパネル装置。 The second decorative layer is directly formed on one surface side of the capacitance sensor sheet, and the second decorative layer is bonded and fixed to the back surface side of the panel material via an adhesive layer.
The touch panel device according to claim 1. 前記第２加飾層は前記パネル材の裏面側に直接形成され、前記静電容量センサシートは接着層を介して前記第２加飾層に接着固定されている、
請求項１に記載のタッチパネル装置。 The second decorative layer is directly formed on the back side of the panel material, and the capacitance sensor sheet is bonded and fixed to the second decorative layer via an adhesive layer.
The touch panel device according to claim 1. 前記静電容量センサシートにおける前記パネル材に対向する面とは反対面に形成された第３加飾層を備え、
前記第３加飾層は透明部分および不透明部分を有し、前記第３加飾層を含めた前記各加飾層の前記透明部分および前記不透明部分は、タッチパネル装置を表面側から視た平面視にて略同一寸法形状に形成されており、前記各加飾層の前記透明部分および前記不透明部分がそれぞれ重なるように配置されている、
請求項１〜３のいずれか一項に記載のタッチパネル装置。 A third decorative layer formed on the surface opposite to the surface facing the panel material in the capacitance sensor sheet;
The third decorative layer has a transparent portion and an opaque portion, and the transparent portion and the opaque portion of each decorative layer including the third decorative layer are planar views of the touch panel device as viewed from the surface side. Are formed in substantially the same size and shape, and are arranged so that the transparent portion and the opaque portion of each decorative layer overlap each other.
The touch panel device according to any one of claims 1 to 3. 前記パネル材は、三次元的な湾曲形状の合成樹脂材料によって形成された、
請求項１〜４のいずれか一項に記載のタッチパネル装置。 The panel material is formed of a synthetic resin material having a three-dimensional curved shape.
The touch panel device according to any one of claims 1 to 4. 請求項２に記載のタッチパネル装置の製造方法であって、
前記パネル材の表面側に前記第１加飾層を形成する工程と、
前記静電容量センサシートの一面側に前記第２加飾層を形成する工程と、
前記第１加飾層が表面側に形成された前記パネル材の裏面側に対して、前記第２加飾層が形成された前記静電容量センサシートを、前記第２加飾層が前記パネル材に対向するように配置し、前記パネル材の裏面側に前記接着層を介して第２加飾層を貼着固定する工程と
を備えたタッチパネル装置の製造方法。 It is a manufacturing method of the touch panel device according to claim 2,
Forming the first decorative layer on the surface side of the panel material;
Forming the second decorative layer on one side of the capacitance sensor sheet;
With respect to the back surface side of the panel material on which the first decorative layer is formed on the front surface side, the capacitance sensor sheet on which the second decorative layer is formed, and the second decorative layer on the panel A method of manufacturing a touch panel device, comprising: a step of arranging the second decorative layer so as to face the material, and attaching and fixing the second decorative layer to the back surface side of the panel material via the adhesive layer. 請求項３に記載のタッチパネル装置の製造方法であって、
前記パネル材の表面側に前記第１加飾層を形成する工程と、
前記パネル材の裏面側に前記第２加飾層を形成する工程と、
前記第２加飾層に前記接着層を介して前記静電容量センサシートを貼着固定する工程と
を備えたタッチパネル装置の製造方法。 It is a manufacturing method of the touch panel device according to claim 3,
Forming the first decorative layer on the surface side of the panel material;
Forming the second decorative layer on the back side of the panel material;
A method of manufacturing a touch panel device, comprising: a step of attaching and fixing the capacitance sensor sheet to the second decorative layer via the adhesive layer. 請求項６または請求項７に記載のタッチパネル装置の製造方法であって、
前記第２加飾層を印刷によって形成する工程を備えたタッチパネル装置の製造方法。 It is a manufacturing method of the touch panel device according to claim 6 or 7,
A method for manufacturing a touch panel device, comprising a step of forming the second decorative layer by printing.
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