JP2009295365A - Decorative sheet, method of manufacturing operation panel, operation panel, and electronic apparatus - Google Patents

Decorative sheet, method of manufacturing operation panel, operation panel, and electronic apparatus Download PDF

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JP2009295365A
JP2009295365A JP2008146467A JP2008146467A JP2009295365A JP 2009295365 A JP2009295365 A JP 2009295365A JP 2008146467 A JP2008146467 A JP 2008146467A JP 2008146467 A JP2008146467 A JP 2008146467A JP 2009295365 A JP2009295365 A JP 2009295365A
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light
operation panel
resin
capacitance switch
black ink
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JP2008146467A
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JP4533446B2 (en
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Tomoya Watase
友也 渡瀬
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Nissha Printing Co Ltd
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Nissha Printing Co Ltd
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Priority to PCT/JP2009/059768 priority patent/WO2009147991A1/en
Priority to TW098118151A priority patent/TW201014502A/en
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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/96—Touch switches
    • H03K17/962—Capacitive touch switches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14778—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the article consisting of a material with particular properties, e.g. porous, brittle
    • B29C45/14811—Multilayered articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14827—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles using a transfer foil detachable from the insert
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/18—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by an internal layer formed of separate pieces of material which are juxtaposed side-by-side
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
    • B29K2995/002—Coloured
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
    • B29K2995/0025—Opaque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
    • B29K2995/0026—Transparent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • B32B2264/107—Ceramic
    • B32B2264/108—Carbon, e.g. graphite particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/402—Coloured
    • B32B2307/4026—Coloured within the layer by addition of a colorant, e.g. pigments, dyes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/41—Opaque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/414—Translucent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2451/00—Decorative or ornamental articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/83—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by legends, e.g. Braille, liquid crystal displays, light emitting or optical elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/88—Processes specially adapted for manufacture of rectilinearly movable switches having a plurality of operating members associated with different sets of contacts, e.g. keyboards
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/064—Optical isolation of switch sites
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/07—Actuators transparent
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/074—Actuation by finger touch
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/96—Touch switches
    • H03K2017/9602—Touch switches characterised by the type or shape of the sensing electrodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/96—Touch switches
    • H03K2217/9607—Capacitive touch switches
    • H03K2217/960785—Capacitive touch switches with illumination

Abstract

<P>PROBLEM TO BE SOLVED: To obtain an operation panel for a capacitance switch capable of clearly displaying a translucent display pattern without leaking light from a shaded part, and preventing that malfunction and non-function are caused in the capacitance switch. <P>SOLUTION: A translucent part surrounded by the shaded part is formed on a base material sheet as the translucent display pattern, and the shaded part is used as a decorative sheet for forming the capacitance switch operation panel formed with an insulating black ink. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、例えば携帯電話やデジタル音楽プレーヤーといった電子機器などに使用できる操作パネルを製造するための加飾シートおよび操作パネルの製造方法に関する。   The present invention relates to a decorative sheet for manufacturing an operation panel that can be used for an electronic device such as a mobile phone or a digital music player, and a method for manufacturing the operation panel.

従来、電化製品などに使用される表示パネルとして、裏面にＬＥＤなどの光源による光が照射されることによって、表面に柄を表示するものがある。こうした表示パネル１１１は、加飾シートの一種である転写シート１０１を使用して形成することができる（図６参照）。転写シート１０１を使用して形成される表示パネル１１１は、少なくとも樹脂成形品１０９の表面に、柄を形成する透光部１０３と遮光部１０４とを備えるものであり、剥離層１０５や加飾層１０６や接着層１０７を備えることもある（図７参照）。表示パネル１１１は、裏面からの光が透光部１０３を通過し遮光部１０４を通過しないようにして表面に柄を表示するため、遮光部１０４には光を完全に遮る隠蔽性が必要になる。   2. Description of the Related Art Conventionally, some display panels used for electrical appliances display a pattern on the surface by irradiating light from a light source such as an LED on the back surface. Such a display panel 111 can be formed using a transfer sheet 101 which is a kind of decorative sheet (see FIG. 6). The display panel 111 formed using the transfer sheet 101 includes a light-transmitting portion 103 and a light-shielding portion 104 that form a pattern on at least the surface of the resin molded product 109, and includes a release layer 105 and a decorative layer. 106 and an adhesive layer 107 may be provided (see FIG. 7). Since the display panel 111 displays a pattern on the front surface so that light from the back surface does not pass through the light-transmitting portion 103 but does not pass through the light-shielding portion 104, the light-shielding portion 104 needs to be concealed to completely block light. .

遮光部１０４が効果的に光を遮光するには黒色インクを用いるとよい。また、デザイン面においても操作パネルを黒色にする場合が多い。グラビア印刷で遮光部１０４が形成された加飾フィルムを用いて表示パネル１１１を作製する場合、遮光部１０４の膜厚は数μｍ程度と薄いため、遮光部１０４を形成する際に遮光性の高いインクを使用する必要がある。   In order for the light shielding unit 104 to effectively shield light, black ink may be used. Also, in terms of design, the operation panel is often black. When the display panel 111 is manufactured using a decorative film in which the light shielding portion 104 is formed by gravure printing, the light shielding portion 104 has a thin film thickness of about several μm. It is necessary to use ink.

特開平７−８４５３３号公報Japanese Patent Laid-Open No. 7-84533

近年、携帯電話やデジタル音楽プレーヤーなどの電子機器には、内部に静電容量スイッチと呼ばれる入力デバイスが多く搭載されるようになってきた。静電容量スイッチとは、指が電極に近づくと電極の静電容量が変化する現象を利用したスイッチである。   In recent years, electronic devices such as mobile phones and digital music players have been equipped with many input devices called capacitance switches. The capacitance switch is a switch that utilizes a phenomenon in which the capacitance of an electrode changes when a finger approaches the electrode.

こうした電子機器１５１に対して、静電容量スイッチの検出部１２１の上面に配置される操作パネルとして従来の表示パネル１１１を使用し、透光部１０３と遮光部１０４とで操作アイコンなどの透光表示柄を形成すると（図７参照）、スイッチに触れたところと別のスイッチが作動したり（誤動作）、スイッチに触れてもスイッチが作動しないこと（不動作）が発生した。これは、表示パネル１１１の遮光部１０４が炭素質粉体で形成されたインクで形成されていて導電性を有することに伴い、指１３１の近くの電極１２２とは別の電極１２３で指１３１を検出してしまうことが生じるためである。   For such an electronic device 151, a conventional display panel 111 is used as an operation panel disposed on the upper surface of the detection unit 121 of the electrostatic capacitance switch, and the light transmission unit 103 and the light shielding unit 104 transmit light such as operation icons. When the display pattern was formed (see FIG. 7), a switch different from that touching the switch was activated (malfunction), or the switch did not operate even when the switch was touched (non-operation). This is because the light shielding portion 104 of the display panel 111 is made of ink made of carbonaceous powder and has conductivity, so that the finger 131 is held by an electrode 123 different from the electrode 122 near the finger 131. This is because it may be detected.

本発明は、遮光部に十分な隠蔽性を備えつつ静電容量スイッチに誤動作や不動作を生じさせない操作パネルを製造するための加飾シートを提供することを目的とする。   An object of this invention is to provide the decorating sheet for manufacturing the operation panel which does not cause a malfunction or a malfunctioning to an electrostatic capacitance switch while providing sufficient concealment property to a light-shielding part.

本発明は前記目的を達成するため、以下のような特徴を備える。   In order to achieve the above object, the present invention has the following features.

本発明の静電容量スイッチ操作パネル形成用の加飾シートは、基体シート上に遮光部に囲まれた透光部が透光表示柄として形成され、遮光部が絶縁性黒色インクで形成された構成である。   In the decorative sheet for forming the capacitance switch operation panel according to the present invention, the translucent part surrounded by the light shielding part is formed as a translucent display pattern on the base sheet, and the light shielding part is formed of an insulating black ink. It is a configuration.

また、上記の発明において、絶縁性黒色インクが少なくとも４種以上の着色顔料を含有し、そのうちの１種が絶縁性黒色インク全体の不揮発成分中３０重量％以下の炭素質粉体からなり、残りの少なくとも３種以上がそれぞれ色調の異なる顔料からなってもよい。   In the above invention, the insulating black ink contains at least four or more kinds of color pigments, one of which is composed of 30% by weight or less of carbonaceous powder in the nonvolatile components of the entire insulating black ink, and the rest At least three of these may be composed of pigments having different color tones.

また、上記の発明において、遮光部がグラビア印刷による２層以上の絶縁性黒色インクの積層によって形成されてもよい。   In the above invention, the light-shielding portion may be formed by stacking two or more insulating black inks by gravure printing.

本発明の静電容量スイッチ操作パネルの製造方法は、上記のいずれかの発明の加飾シートを、透光部と遮光部とが形成されていない基体シートの面が金型キャビティに面するように金型内に配置し、金型内に成形樹脂を流し込み、冷却固化後に基体シートを剥離する工程を備える。   The manufacturing method of the capacitance switch operation panel according to the present invention is such that the surface of the base sheet on which the light transmitting portion and the light shielding portion are not formed faces the mold cavity. And a step of pouring a molding resin into the mold and peeling off the base sheet after cooling and solidification.

本発明の静電容量スイッチ操作パネルの製造方法は、上記のいずれかの発明の加飾シートと樹脂成形品とを粘着剤で貼り合せて一体化する工程を備える。   The manufacturing method of the electrostatic capacitance switch operation panel of this invention is equipped with the process of bonding together the decorating sheet | seat of any one of said invention, and a resin molded product with an adhesive.

本発明の静電容量スイッチ操作パネルは、樹脂成形品の表面に透光表示柄を形成する透光部と遮光部とが形成され、遮光部が絶縁性黒色インクで形成された構成である。   The capacitance switch operation panel of the present invention has a configuration in which a light transmitting portion and a light shielding portion for forming a light transmitting display pattern are formed on the surface of a resin molded product, and the light shielding portion is formed of an insulating black ink.

また、上記の発明において、表面上に隣り合う２箇所のスイッチタッチ面の間のＬＣＲメータによる直列等価抵抗値（ＥＳＲ）が１０ＭΩ以上であってもよい。   In the above invention, a series equivalent resistance value (ESR) by an LCR meter between two adjacent switch touch surfaces on the surface may be 10 MΩ or more.

本発明の電子機器は、静電容量スイッチの検出部の上面に、樹脂成形品の表面に透光表示柄を形成する透光部と遮光部とが形成され、遮光部が絶縁性黒色インクで形成されたものである静電容量スイッチ操作パネルを備えた構成である。   In the electronic device of the present invention, a light-transmitting portion and a light-shielding portion for forming a light-transmitting display pattern are formed on the surface of the resin molded product on the upper surface of the detection portion of the capacitance switch, and the light-shielding portion is made of insulating black ink. It is the structure provided with the electrostatic capacitance switch operation panel which is formed.

本発明の加飾シートによると、遮光部が絶縁性黒色インクで形成されている。したがって、遮光部から光を漏らすことなく透光表示柄を明瞭に表示できるとともに、静電容量スイッチに誤動作や不動作を生じさせない静電容量スイッチ用操作パネルを得ることができる。   According to the decorative sheet of the present invention, the light shielding portion is formed of an insulating black ink. Therefore, a translucent display pattern can be clearly displayed without leaking light from the light shielding portion, and an operation panel for a capacitance switch that does not cause malfunction or malfunction of the capacitance switch can be obtained.

図面を参照しながらこの発明の実施の形態について詳しく説明する。   Embodiments of the present invention will be described in detail with reference to the drawings.

まず、本発明の静電容量スイッチ操作パネル形成用の加飾シートについて説明する。加飾シートとは、樹脂成形品の表面を加飾するために用いられるシートである。   First, the decorative sheet for forming the capacitance switch operation panel of the present invention will be described. A decorating sheet is a sheet used for decorating the surface of a resin molded product.

加飾シートとして、例えば転写シート１を使用することができる。   As the decorative sheet, for example, the transfer sheet 1 can be used.

転写シート１は、基体シート２の上に透光表示柄として形成され遮光部４に囲まれた透光部３を備える転写層８が少なくとも形成されたものである（図１参照）。後述する成形同時転写法によって、転写シート１を樹脂成形品９に融着させ、転写シート１の基体シート２を剥離し、転写シート１の転写層８を樹脂成形品９の表面に転写して静電容量スイッチ操作パネルを形成することができる（図２、図３参照）。   The transfer sheet 1 is formed by forming at least a transfer layer 8 including a light-transmitting portion 3 formed as a light-transmitting display pattern and surrounded by a light-shielding portion 4 on a base sheet 2 (see FIG. 1). The transfer sheet 1 is fused to the resin molded product 9 by a molding simultaneous transfer method described later, the base sheet 2 of the transfer sheet 1 is peeled off, and the transfer layer 8 of the transfer sheet 1 is transferred to the surface of the resin molded product 9. A capacitance switch operation panel can be formed (see FIGS. 2 and 3).

基体シート２としては、ポリエステル系樹脂、ポリプロピレン系樹脂、塩化ビニル樹脂、ポリエチレン樹脂、ポリエチレンテレフタレート樹脂、ポリカーボネート樹脂、ナイロン樹脂、ビニロン樹脂、アセテート樹脂、ポリエチレン系樹脂、ポリアミド系樹脂、ポリアクリル系樹脂、ポリ塩化ビニル系樹脂などのプラスチックシートを使用することができる。基体シート２の厚さとしては、１０〜１００μｍのものを使用するとよい。基体シート２はそれ自体で剥離性を有するものを用いるとよい。また、より剥離性を安定させるために、離型層（図示せず）を形成してもよい。離型層は転写工程後に基体シート２とともに除去される層である。離型層の材質としては、シリコーン樹脂、メラミン樹脂、アルキッド樹脂、エポキシ樹脂などの硬化性樹脂を用いるとよい。離型層の形成方法としては、ロールコート法、スプレーコート法などのコート法、グラビア印刷法、スクリーン印刷法などの印刷法がある。   As the base sheet 2, polyester resin, polypropylene resin, vinyl chloride resin, polyethylene resin, polyethylene terephthalate resin, polycarbonate resin, nylon resin, vinylon resin, acetate resin, polyethylene resin, polyamide resin, polyacrylic resin, Plastic sheets such as polyvinyl chloride resins can be used. As the thickness of the base sheet 2, a sheet having a thickness of 10 to 100 μm may be used. It is preferable to use a base sheet 2 having peelability by itself. Further, a release layer (not shown) may be formed in order to further stabilize the peelability. The release layer is a layer that is removed together with the base sheet 2 after the transfer process. As a material for the release layer, a curable resin such as a silicone resin, a melamine resin, an alkyd resin, or an epoxy resin may be used. As a method for forming the release layer, there are a coating method such as a roll coating method and a spray coating method, a printing method such as a gravure printing method and a screen printing method.

また、基体シート２あるいは離型層との剥離をより確実にするために、必要に応じて剥離層５を形成してもよい。剥離層５は、成形同時転写後に基体シート２を剥離した際に、基体シート２または離型層から剥離して被転写物の最外面となる層である。剥離層５の材質としては、アクリル系樹脂、ポリエステル系樹脂、ポリ塩化ビニル系樹脂、セルロース系樹脂、ゴム系樹脂、ポリウレタン系樹脂、ポリ酢酸ビニル系樹脂などのほか、塩化ビニル−酢酸ビニル共重合体系樹脂、エチレン−酢酸ビニル共重合体系樹脂などのコポリマーを用いるとよい。剥離層５に硬度が必要な場合には、紫外線硬化性樹脂などの光硬化性樹脂、電子線硬化性樹脂などの放射線硬化性樹脂、熱硬化性樹脂などを選定して用いるとよい。剥離層５の形成方法としては、グラビアコート法、ロールコート法、コンマコート法などのコート法、グラビア印刷法、スクリーン印刷法などの印刷法がある。   Moreover, in order to make peeling with the base material sheet 2 or a release layer more reliable, you may form the peeling layer 5 as needed. The release layer 5 is a layer that peels from the base sheet 2 or the release layer and becomes the outermost surface of the transfer object when the base sheet 2 is peeled after simultaneous molding and transfer. The release layer 5 may be made of acrylic resin, polyester resin, polyvinyl chloride resin, cellulose resin, rubber resin, polyurethane resin, polyvinyl acetate resin, or vinyl chloride-vinyl acetate copolymer. Copolymers such as system resins and ethylene-vinyl acetate copolymer resins may be used. When the release layer 5 requires hardness, a photo-curing resin such as an ultraviolet curable resin, a radiation curable resin such as an electron beam curable resin, or a thermosetting resin may be selected and used. Examples of the method for forming the release layer 5 include a coating method such as a gravure coating method, a roll coating method, and a comma coating method, and a printing method such as a gravure printing method and a screen printing method.

また、意匠性を付与するため加飾層６を形成してもよい。加飾層６の材質としては、ポリビニル系樹脂、ポリアミド系樹脂、ポリエステル系樹脂、アクリル系樹脂、ポリウレタン系樹脂、ポリビニルアセタール系樹脂、ポリエステルウレタン系樹脂、セルロースエステル系樹脂、アルキド樹脂などの樹脂をバインダーとし、適切な色の顔料または染料を着色剤として含有する着色インクを用いるとよい。加飾層６の形成方法としては、グラビア印刷法、スクリーン印刷法、オフセット印刷法などの通常の印刷法などを用いるとよい。加飾層６の厚さとしては、１〜３０μｍが好ましい。   Moreover, you may form the decoration layer 6 in order to provide designability. As a material of the decoration layer 6, resins such as polyvinyl resins, polyamide resins, polyester resins, acrylic resins, polyurethane resins, polyvinyl acetal resins, polyester urethane resins, cellulose ester resins, and alkyd resins are used. A colored ink containing a binder or an appropriate color pigment or dye as a colorant may be used as a binder. As a method for forming the decorative layer 6, a normal printing method such as a gravure printing method, a screen printing method, or an offset printing method may be used. As thickness of the decoration layer 6, 1-30 micrometers is preferable.

遮光部４に囲まれた透光部３が透光表示柄となるように遮光部４を形成する。透光表示柄とは操作パネル裏面からの光の照射有無によって表示の有無が変化する柄のことである。透光表示柄として三角形や四角形などの単純な形状に限らず、例えば操作アイコンの柄を形成するようにしてもよい。遮光部４は絶縁性黒色インクで形成される。絶縁性黒色インクは、裏面から光を照射しても遮光部４に光漏れを起こさないための隠蔽性と、操作パネルの操作中に静電容量スイッチの誤動作や不動作を引き起こさないための絶縁性とを操作パネルに付与するためのインクである。絶縁性黒色インクは少なくとも４種以上の着色顔料を含有し、そのうちの１種が絶縁性黒色インク全体の不揮発成分中３０重量％以下の濃度の炭素質粉体であるのが好ましい。炭素質粉体の濃度が３０重量％以下であれば、印刷用黒色インクに絶縁性が得られ、操作パネルが静電容量スイッチの誤動作や不動作を引き起こさないようにすることができる。炭素微粉体は粒子径１〜２００ｎｍであることが望ましい。２００ｎｍより大きいと文字再現性について印刷適性が悪くなる。１ｎｍより小さいと黒色度や隠蔽性が落ちてしまう。   The light shielding part 4 is formed so that the light transmissive part 3 surrounded by the light shielding part 4 becomes a light transmissive display pattern. The translucent display pattern is a pattern whose presence or absence of display changes depending on whether or not light is irradiated from the back of the operation panel. The translucent display pattern is not limited to a simple shape such as a triangle or a quadrangle. For example, an operation icon pattern may be formed. The light shielding part 4 is formed of an insulating black ink. Insulating black ink has a concealing property for preventing light from leaking to the light shielding portion 4 even when light is irradiated from the back surface, and an insulating material for preventing malfunction or malfunction of the capacitance switch during operation of the operation panel. This is an ink for imparting performance to the operation panel. The insulating black ink contains at least four kinds of color pigments, and one of them is preferably a carbonaceous powder having a concentration of 30% by weight or less in the nonvolatile components of the whole insulating black ink. If the concentration of the carbonaceous powder is 30% by weight or less, the black ink for printing can be insulated, and the operation panel can be prevented from causing malfunction or malfunction of the capacitance switch. The fine carbon powder desirably has a particle diameter of 1 to 200 nm. If it is larger than 200 nm, the printability of the character reproducibility deteriorates. When the thickness is smaller than 1 nm, the blackness and the concealing property are deteriorated.

残りの少なくとも３種の着色顔料は青色系、赤色系、黄色系の顔料が望ましい。混ぜると黒色となるからである。青色系顔料としては、例えば、Ｐｉｇｍｅｎｔ Ｂｌｕｅ １５（銅フタロシアニン）等が、赤色系顔料としては、例えば、Ｐｉｇｍｅｎｔ Ｒｅｄ １４９（パーマネントレッドＢＬ）、Ｐｉｇｍｅｎｔ Ｒｅｄ １４４（Ｃｒｏｍｏｐｈｔａｌ Ｒｅｄ ｔｙｐｅｌ）等が、黄色系顔料としては、例えば、Ｐｉｇｍｅｎｔ Ｙｅｌｌｏｗ １２（ジスアゾイエロー）等を使用できる。青色系、赤色系、黄色系以外の顔料として、例えば、黒色系顔料としてＰｉｇｍｅｎｔ Ｂｌａｃｋ １（アニリンブラック）、Ｐｉｇｍｅｎｔ Ｂｌａｃｋ １１（鉄黒）等を使用してもよい。   The remaining at least three color pigments are preferably blue, red, and yellow pigments. This is because when mixed, it becomes black. Examples of the blue pigment include Pigment Blue 15 (copper phthalocyanine), and examples of the red pigment include Pigment Red 149 (Permanent Red BL) and Pigment Red 144 (Chromophthal Red type). For example, Pigment Yellow 12 (disazo yellow) can be used. As pigments other than blue, red, and yellow, for example, Pigment Black 1 (aniline black), Pigment Black 11 (iron black), or the like may be used as a black pigment.

絶縁性黒色インクに使用する樹脂バインダーは、アクリル系樹脂、ウレタン系樹脂、塩化ビニル／酢酸ビニル共重合体樹脂のいずれか、あるいはこれらの組み合わせを主成分とするものである。   The resin binder used for the insulating black ink is mainly composed of any one of acrylic resin, urethane resin, vinyl chloride / vinyl acetate copolymer resin, or a combination thereof.

遮光部４をグラビア印刷で形成する場合は２層以上に積層すると十分な隠蔽性を得ることができて好適である。また、遮光部４におけるインク層全体の膜厚は２０μｍ以下であるのが好ましい。この膜厚が２０μｍより大きいと、樹脂成形品９にロール転写法などで転写層８を転写する後転写加工によって操作パネル１１を形成する場合、遮光部４のインキ層膜厚と遮光部４以外の部分の膜厚との差により段差が形成され、外観の見栄えに対して好ましくない。また、後述する貼り合せ法で操作パネル１１を形成する場合も同様の段差が目立ちやすい。さらに、後述する成形同時転写法で操作パネル１１を形成する場合はインク層が厚いと溶融した成形樹脂３２の熱圧によりインクが溶融して流動しやすくなり、パターンが歪んだりするいわゆるインク流れが起こりやすくなる。   In the case of forming the light-shielding portion 4 by gravure printing, it is preferable that two or more layers are laminated because sufficient concealment can be obtained. Moreover, it is preferable that the film thickness of the whole ink layer in the light-shielding part 4 is 20 micrometers or less. If the film thickness is larger than 20 μm, when the operation panel 11 is formed by transfer processing after transferring the transfer layer 8 to the resin molded product 9 by the roll transfer method or the like, the ink layer thickness of the light shielding part 4 and the light shielding part 4 A step is formed by the difference from the film thickness of this portion, which is not preferable for the appearance. Further, when the operation panel 11 is formed by a bonding method to be described later, a similar step is easily noticeable. Further, when the operation panel 11 is formed by a molding simultaneous transfer method to be described later, if the ink layer is thick, the ink is easily melted and flowed by the hot pressure of the molten molding resin 32, and a so-called ink flow in which the pattern is distorted is generated. It tends to happen.

また、接着層７を必要に応じて形成してもよい。接着層７は、成形同時転写法により転写シートを樹脂成形品９に接着させるための層である。樹脂成形品９の材質がポリアクリル系樹脂の場合は、接着層７の材質としてポリアクリル系樹脂を用いるとよい。また、樹脂成形品９の材質がポリフェニレンオキシド・ポリスチレン系樹脂、ポリカーボネート系樹脂、スチレン共重合体系樹脂、ポリスチレン系ブレンド樹脂の場合は、これらの樹脂と親和性のあるポリアクリル系樹脂、ポリスチレン系樹脂、ポリアミド系樹脂などを、接着層７の材質として使用すればよい。接着層７の形成方法としては、グラビアコート法、ロールコート法、コンマコート法などのコーティングや、グラビア印刷、スクリーン印刷法などを用いるとよい。接着層７の乾燥膜厚は、１〜５μｍとするのが一般的である。   Moreover, you may form the contact bonding layer 7 as needed. The adhesive layer 7 is a layer for adhering the transfer sheet to the resin molded product 9 by a simultaneous molding transfer method. When the material of the resin molded product 9 is a polyacrylic resin, a polyacrylic resin may be used as the material of the adhesive layer 7. In addition, when the material of the resin molded product 9 is polyphenylene oxide / polystyrene resin, polycarbonate resin, styrene copolymer resin, or polystyrene blend resin, polyacrylic resin or polystyrene resin having affinity with these resins Polyamide resin or the like may be used as the material for the adhesive layer 7. As a method for forming the adhesive layer 7, a gravure coating method, a roll coating method, a comma coating method or the like, a gravure printing, a screen printing method, or the like may be used. The dry film thickness of the adhesive layer 7 is generally 1 to 5 μm.

次に、成形同時転写法によって操作パネル１１を製造する方法について説明する（図２参照）。   Next, a method for manufacturing the operation panel 11 by the simultaneous molding transfer method will be described (see FIG. 2).

まず、可動型と固定型とからなる成形用金型３１内に転写シート１を送り込む。その際、枚葉の転写シート１を１枚ずつ送り込んでもよいし、長尺の転写シート１の必要部分を間欠的に送り込んでもよい。長尺の転写シート１を使用する場合、位置決め機構を有する送り装置を使用して、転写シート１と成形用金型３１との見当が一致するようにするとよい。また、転写シート１を間欠的に送り込む際に、転写シート１の位置をセンサーで検出した後に転写シート１を可動型と固定型とで固定するようにしてもよい。転写シート１は転写層８が形成されていない基体シート２の面が金型キャビティに面するように金型内に配置する。成形用金型３１を閉じた後、ゲートから成形樹脂３２を金型内に射出充填させ、樹脂成形品９を形成するのと同時にその面に転写シート１を接着させる（図２（ａ）参照）。樹脂成形品９を冷却固化した後、成形用金型３１を開いて基体シート２を剥がすと、転写層８が樹脂成形品９の表面に転写され、転写工程が完了する（図２（ｂ）参照）。こうして表面に転写層８を有する操作パネル１１が形成される（図３、図４参照）。   First, the transfer sheet 1 is fed into a molding die 31 composed of a movable mold and a fixed mold. At that time, the sheet-like transfer sheets 1 may be fed one by one, or necessary portions of the long transfer sheet 1 may be intermittently fed. When the long transfer sheet 1 is used, it is preferable to use a feeding device having a positioning mechanism so that the registers of the transfer sheet 1 and the molding die 31 coincide. Further, when the transfer sheet 1 is intermittently fed, the transfer sheet 1 may be fixed by a movable mold and a fixed mold after the position of the transfer sheet 1 is detected by a sensor. The transfer sheet 1 is placed in the mold so that the surface of the base sheet 2 on which the transfer layer 8 is not formed faces the mold cavity. After the molding die 31 is closed, the molding resin 32 is injected and filled into the die from the gate, and at the same time as the resin molded product 9 is formed, the transfer sheet 1 is adhered to the surface (see FIG. 2A). ). After the resin molded product 9 is cooled and solidified, the molding die 31 is opened and the base sheet 2 is peeled off, whereby the transfer layer 8 is transferred to the surface of the resin molded product 9 and the transfer process is completed (FIG. 2B). reference). Thus, the operation panel 11 having the transfer layer 8 on the surface is formed (see FIGS. 3 and 4).

操作パネル１１を形成するための樹脂成形品９に用いられる成形樹脂３２としては、例えばポリエチレン、ポリプロピレン等のポリオレフィン系樹脂、ポリスチレン系樹脂、ポリ塩化ビニル系樹脂、ポリ（メタ）アクリレート系樹脂、アクリル系樹脂、ポリアセタール樹脂、ポリエチレンテレフタレート、ポリブチレンテレフタレート等のポリエステル樹脂、ポリアミド樹脂、ポリカーボネート樹脂、ポリフェニレンサルファイド樹脂、ポリイミド樹脂等の公知の熱可塑性樹脂がいずれも使用できる。これらの樹脂は単独あるいは２種以上を混合して使用することも可能である。   Examples of the molding resin 32 used in the resin molded product 9 for forming the operation panel 11 include polyolefin resins such as polyethylene and polypropylene, polystyrene resins, polyvinyl chloride resins, poly (meth) acrylate resins, and acrylics. Any known thermoplastic resins such as polyester resins, polyacetal resins, polyester resins such as polyethylene terephthalate and polybutylene terephthalate, polyamide resins, polycarbonate resins, polyphenylene sulfide resins and polyimide resins can be used. These resins can be used alone or in admixture of two or more.

加飾シートとしては、先に説明した転写シート１とは別に、貼り合せシート（図示せず）を使用することもできる。貼り合せシートは転写シート１の構成から剥離層５および接着層７を除いたものである。貼り合せシートは樹脂成形品の表面と接着して一体となり、樹脂成形品からはみ出た外周部分が切り離されるものである。   In addition to the transfer sheet 1 described above, a laminated sheet (not shown) can be used as the decorative sheet. The bonded sheet is obtained by removing the release layer 5 and the adhesive layer 7 from the configuration of the transfer sheet 1. The bonded sheet is bonded to and integrated with the surface of the resin molded product, and the outer peripheral portion protruding from the resin molded product is cut off.

貼り合せシートを使用する貼り合せ法によって静電容量スイッチ操作パネルを形成するには、まず、樹脂成形品の表面に粘着剤を塗布しその上に貼り合せシートを樹脂成形品の表面に接着し、その後樹脂成形品からはみ出た外周部分を切り離せばよい。   In order to form a capacitance switch operation panel by a bonding method using a bonding sheet, first, an adhesive is applied to the surface of the resin molded product, and then the bonding sheet is adhered to the surface of the resin molded product. Thereafter, the outer peripheral portion protruding from the resin molded product may be cut off.

こうして形成された操作パネル１１は透光表示柄を備えるだけでなく、電子機器５１を操作するために指が触れられる箇所であるスイッチタッチ面４１、４２も備える（図４、図５参照）。操作パネル１１は、静電容量スイッチの指を検出するための基板である検出部２１の上面に配置される（図５参照）。検出部２１は基材２４上に電極２２、２３が形成された構成である。スイッチタッチ面４１、４２は電極２２、２３の上面に位置するものであって、必ずしも透光表示柄である透光部３の位置と重なる訳ではない。   The operation panel 11 thus formed not only has a translucent display pattern, but also includes switch touch surfaces 41 and 42 that are touched by a finger to operate the electronic device 51 (see FIGS. 4 and 5). The operation panel 11 is disposed on the upper surface of the detection unit 21 which is a substrate for detecting the finger of the capacitance switch (see FIG. 5). The detection unit 21 has a configuration in which electrodes 22 and 23 are formed on a base material 24. The switch touch surfaces 41 and 42 are located on the upper surfaces of the electrodes 22 and 23, and do not necessarily overlap with the position of the translucent part 3 that is a translucent display pattern.

静電容量スイッチ用の操作パネルには、表面だけでなく内部の層にも絶縁性が要求される。しかし、内部の層が絶縁性であるかどうかは、通常の絶縁抵抗計では確認できない。そこで、測定物を抵抗値、電気容量、インダクタンスの等価回路とみなし、それぞれを独立に測定できるＬＣＲメータを使用して、直列等価抵抗値（ＥＳＲ）を測定して絶縁性を評価するのがよい。ＬＣＲメータで操作パネルのＥＳＲを測定するには、操作パネルの操作部、詳しくは表面上の隣り合う２箇所のスイッチタッチ面４１、４２にＬＣＲメータの２本のテスター棒をそれぞれ当てればよい（図４、５参照）。このスイッチタッチ面４１、４２の位置は電極２２、２３の上面の位置である。測定条件でＥＳＲの値は大きく変わるものではないが、本発明においては、周波数（ＦＲＥＱ）２０ｋＨｚ、定電圧印加（ＣＶ）１．２５Ｖの条件で測定するものとする。ＬＣＲメータで測定したＥＳＲは１０ＭΩ以上であるのが好ましい。ＥＳＲが１０ＭΩ以上であれば、操作パネルが静電容量スイッチの誤動作や不動作を引き起こさないようにすることができる。   An operation panel for a capacitance switch requires insulation not only on the surface but also on the inner layer. However, it cannot be confirmed with a normal insulation resistance meter whether the inner layer is insulative. Therefore, it is better to consider the object to be measured as an equivalent circuit of resistance value, electric capacity, and inductance, and measure the series equivalent resistance value (ESR) and evaluate the insulation by using an LCR meter that can measure each independently. . In order to measure the ESR of the operation panel with the LCR meter, the two tester bars of the LCR meter may be respectively applied to the operation part of the operation panel, more specifically, two adjacent switch touch surfaces 41 and 42 on the surface ( (See FIGS. 4 and 5). The positions of the switch touch surfaces 41 and 42 are the positions of the upper surfaces of the electrodes 22 and 23. Although the ESR value does not vary greatly depending on the measurement conditions, in the present invention, the measurement is performed under the conditions of a frequency (FREQ) of 20 kHz and a constant voltage application (CV) of 1.25 V. The ESR measured with an LCR meter is preferably 10 MΩ or more. If the ESR is 10 MΩ or more, the operation panel can be prevented from causing malfunction or malfunction of the capacitance switch.

厚さ３８μｍのポリエチレンテレフタレートフィルムを基体シート２とし、次いで、剥離層５、加飾層６、遮光部４に囲まれた透光部３が透光表示柄となるように遮光部４、および接着層７を順次グラビア印刷法により形成して、転写シート１を得た。剥離層５、加飾層６は、それぞれアクリル系樹脂からなるインキを用いて形成した。遮光部４は、下記の絶縁性黒色インクを用い、グラビア印刷機で２層刷り重ねた。接着層１５は塩化ビニル−酢酸ビニル共重合体系樹脂からなるインキを用いて形成した。   A polyethylene terephthalate film having a thickness of 38 μm is used as the base sheet 2, and then the light-shielding portion 4 is bonded to the release layer 5, the decorative layer 6, and the light-transmitting portion 3 surrounded by the light-shielding portion 4, and is bonded The layer 7 was sequentially formed by a gravure printing method to obtain a transfer sheet 1. The release layer 5 and the decorative layer 6 were each formed using an ink made of an acrylic resin. The light-shielding part 4 was printed by using the following insulating black ink, and two layers were printed with a gravure printing machine. The adhesive layer 15 was formed using an ink made of a vinyl chloride-vinyl acetate copolymer resin.

絶縁性黒色インク組成
顔料 １０．０％
アクリル樹脂 １８．０％
ビニル樹脂 ４．０％
分散剤 ０．４％
ＭＥＫ 約３１％
トルエン 約３５％
＊顔料の組成
三菱化学株式会社製カーボンブラック ＭＡ８ ４０％
青色系顔料 ２１％
赤色系顔料 １６％
黄色系顔料 ２３％ Insulating black ink composition Pigment 10.0%
Acrylic resin 18.0%
Vinyl resin 4.0%
Dispersant 0.4%
MEK about 31%
Toluene about 35%
* Pigment composition Carbon black MA8 manufactured by Mitsubishi Chemical Corporation 40%
Blue pigment 21%
Red pigment 16%
Yellow pigment 23%

成形同時転写法により操作パネル１１を得た。得られた操作パネルの操作部の抵抗値を、日置電機株式会社製３５３２−５０ ＬＣＲ ＨｉＴＥＳＴＥＲを使用し、周波数（ＦＲＥＱ）２０ｋＨｚ、定電圧印加（ＣＶ）１．２５Ｖの条件で測定したところ、直列等価抵抗値（ＥＳＲ）は１５０ＭΩであり、静電容量スイッチ用の操作パネルとして使用したところ、スイッチの誤動作や不動作は生じなかった。また、操作パネル１１の裏側からＬＥＤ光源１２を照らしたところ、透光部３から透光表示柄が明瞭に浮かび上がり遮光部４からの光漏れはなかった。   An operation panel 11 was obtained by a simultaneous molding transfer method. When the resistance value of the operation part of the obtained operation panel was measured under the conditions of a frequency (FREQ) of 20 kHz and a constant voltage application (CV) of 1.25 V using a 3532-50 LCR HiTESTER manufactured by Hioki Electric Co., Ltd. The equivalent resistance value (ESR) was 150 MΩ, and when used as an operation panel for a capacitance switch, no malfunction or malfunction of the switch occurred. Further, when the LED light source 12 was illuminated from the back side of the operation panel 11, the translucent display pattern clearly appeared from the translucent part 3, and no light leaked from the light shielding part 4.

（比較例１）
遮光部４を以下の黒色インクとしたこと以外は実施例１と同様にして形成した転写シートを用いて、成形同時転写法により操作パネルを得た。 (Comparative Example 1)
An operation panel was obtained by a molding simultaneous transfer method using a transfer sheet formed in the same manner as in Example 1 except that the light shielding portion 4 was made of the following black ink.

黒色インク組成
顔料 １０．０％
アクリル樹脂 １８．０％
ビニル樹脂 ４．０％
分散剤 ０．４％
ＭＥＫ 約３１％
トルエン 約３５％
＊顔料の組成
三菱化学株式会社製カーボンブラック ＭＡ８ １００％ Black ink composition Pigment 10.0%
Acrylic resin 18.0%
Vinyl resin 4.0%
Dispersant 0.4%
MEK about 31%
Toluene about 35%
* Composition of pigment Carbon black MA8 manufactured by Mitsubishi Chemical Corporation 100%

得られた操作パネルの操作部の抵抗値を、実施例１と同条件で測定したところ、直列等価抵抗値（ＥＳＲ）は０．５ＭΩであり、静電容量スイッチ用の操作パネルとして使用したところ、スイッチの誤動作が生じてしまった。   When the resistance value of the operation part of the obtained operation panel was measured under the same conditions as in Example 1, the series equivalent resistance value (ESR) was 0.5 MΩ, and it was used as an operation panel for a capacitance switch. The switch malfunctioned.

厚さ５０μｍのポリエチレンテレフタレートフィルムを基体シート２とし、次いで、加飾層６および遮光部４に囲まれた透光部３が透光表示柄となるように遮光部４を順次グラビア印刷法により形成して、貼り合せシートを得た。   A polyethylene terephthalate film having a thickness of 50 μm is used as the base sheet 2, and then the light shielding portion 4 is sequentially formed by a gravure printing method so that the light transmitting portion 3 surrounded by the decorative layer 6 and the light shielding portion 4 becomes a light transmitting display pattern. Thus, a bonded sheet was obtained.

遮光部は下記の絶縁性黒色インクを用い、グラビア印刷機で２層刷り重ねた。   The light-shielding part used the following insulating black ink, and was printed on two layers with a gravure printing machine.

絶縁性黒色インク組成
顔料 １０．０％
アクリル樹脂 １８．０％
ビニル樹脂 ４．０％
分散剤 ０．４％
ＭＥＫ 約３１％
トルエン 約３５％
＊顔料の組成
三菱化学株式会社製カーボンブラック ＭＡ８ ４０％
青色系顔料 ２１％
赤色系顔料 １６％
黄色系顔料 ２３％ Insulating black ink composition Pigment 10.0%
Acrylic resin 18.0%
Vinyl resin 4.0%
Dispersant 0.4%
MEK about 31%
Toluene about 35%
* Pigment composition Carbon black MA8 manufactured by Mitsubishi Chemical Corporation 40%
Blue pigment 21%
Red pigment 16%
Yellow pigment 23%

得られた貼り合せシートを貼り合せ法によって厚さ１ｍｍのポリカーボネート透明板に貼り合せ、一体化することで、操作パネルを得た。得られた操作パネルの操作部の抵抗値を、日置電機株式会社製３５３２−５０ ＬＣＲ ＨｉＴＥＳＴＥＲを使用し、周波数（ＦＲＥＱ）２０ｋＨｚ、定電圧印加（ＣＶ）１．２５Ｖの条件で測定したところ、直列等価抵抗値（ＥＳＲ）は８６ＭΩであり、静電容量スイッチ用の操作パネルとして使用したところ、スイッチの誤動作や不動作は生じなかった。また、操作パネルの裏側からＬＥＤ光源１２を照らしたところ、透光部３から透光表示柄が明瞭に浮かび上がり遮光部４からの光漏れはなかった。   The obtained bonded sheet was bonded to a 1 mm thick polycarbonate transparent plate by a bonding method and integrated to obtain an operation panel. When the resistance value of the operation part of the obtained operation panel was measured under the conditions of a frequency (FREQ) of 20 kHz and a constant voltage application (CV) of 1.25 V using a 3532-50 LCR HiTESTER manufactured by Hioki Electric Co., Ltd. The equivalent resistance value (ESR) was 86 MΩ, and when it was used as an operation panel for a capacitance switch, no malfunction or malfunction of the switch occurred. Further, when the LED light source 12 was illuminated from the back side of the operation panel, the translucent display pattern clearly emerged from the translucent part 3 and no light leaked from the light shielding part 4.

本発明の転写シートの断面図である。It is sectional drawing of the transfer sheet of this invention. 成形同時転写法により本発明の操作パネルを製造する一工程を示す断面図である。It is sectional drawing which shows 1 process of manufacturing the operation panel of this invention by a shaping | molding simultaneous transfer method. 本発明の操作パネルの断面図である。It is sectional drawing of the operation panel of this invention. 本発明の操作パネルの正面図である。It is a front view of the operation panel of this invention. 本発明の電子機器の断面図である。It is sectional drawing of the electronic device of this invention. 従来の表示パネルの断面図である。It is sectional drawing of the conventional display panel. 従来の電子機器の断面図である。It is sectional drawing of the conventional electronic device.

符号の説明Explanation of symbols

１ 転写シート
２ 基体シート
３ 透光部
４ 遮光部
５ 剥離層
６ 加飾層
７ 接着層
８ 転写層
９ 樹脂成形品
１１ 操作パネル
１２ 光源
２１ 検出部
２２ 電極
２３ 電極
２４ 基材
３１ 成形用金型
３２ 成形樹脂
４１ スイッチタッチ面
４２ スイッチタッチ面
５１ 電子機器
５２ 電子機器筐体
１０１ 転写シート
１０２ 基体シート
１０３ 透光部
１０４ 遮光部
１０５ 剥離層
１０６ 加飾層
１０７ 接着層
１０９ 樹脂成形品
１１１ 表示パネル
１１２ 光源
１２１ 検出部
１２２ 電極
１２３ 電極
１２４ 基材
１３１ 指
１５１ 電子機器
１５２ 電子機器筐体 DESCRIPTION OF SYMBOLS 1 Transfer sheet 2 Base sheet 3 Light transmission part 4 Light-shielding part 5 Peeling layer 6 Decorating layer 7 Adhesive layer 8 Transfer layer 9 Resin molded product 11 Operation panel 12 Light source 21 Detection part 22 Electrode 23 Electrode 24 Base material 31 Mold for mold 32 Molding resin 41 Switch touch surface 42 Switch touch surface 51 Electronic device 52 Electronic device casing 101 Transfer sheet 102 Base sheet 103 Translucent portion 104 Light shielding portion 105 Peeling layer 106 Decorating layer 107 Adhesive layer 109 Resin molded product 111 Display panel 112 Light source 121 Detection unit 122 Electrode 123 Electrode 124 Base material 131 Finger 151 Electronic device 152 Electronic device housing

Claims (8)

基体シート上に遮光部に囲まれた透光部が透光表示柄として形成され、遮光部が絶縁性黒色インクで形成されたことを特徴とする静電容量スイッチ操作パネル形成用の加飾シート。   A decorative sheet for forming a capacitive switch operation panel, wherein a light-transmitting portion surrounded by a light-shielding portion is formed as a light-transmitting display pattern on the base sheet, and the light-shielding portion is formed of an insulating black ink. . 絶縁性黒色インクが少なくとも４種以上の着色顔料を含有し、そのうちの１種が絶縁性黒色インク全体の不揮発成分中３０重量％以下の炭素質粉体からなり、残りの少なくとも３種以上がそれぞれ色調の異なる顔料からなる請求項１記載の加飾シート。   The insulating black ink contains at least four or more kinds of coloring pigments, one of which is composed of 30% by weight or less of carbonaceous powder in the nonvolatile components of the whole insulating black ink, and the remaining at least three or more are each The decorative sheet according to claim 1, comprising pigments having different color tones. 遮光部がグラビア印刷による２層以上の絶縁性黒色インクの積層によって形成された請求項１または２のいずれかに記載の加飾シート。   The decorative sheet according to any one of claims 1 and 2, wherein the light shielding portion is formed by laminating two or more insulating black inks by gravure printing. 請求項１〜３のいずれかに記載の加飾シートを、透光部と遮光部とが形成されていない基体シートの面が金型キャビティに面するように金型内に配置し、金型内に成形樹脂を流し込み、冷却固化後に基体シートを剥離することを特徴とする静電容量スイッチ操作パネルの製造方法。   The decorative sheet according to any one of claims 1 to 3 is disposed in a mold so that a surface of a base sheet on which a light-transmitting portion and a light-shielding portion are not formed faces the mold cavity, A method for producing a capacitance switch operation panel, wherein a molding resin is poured into the substrate and the substrate sheet is peeled off after cooling and solidification. 請求項１〜３のいずれかに記載の加飾シートと樹脂成形品とを粘着剤で貼り合せて一体化することを特徴とする静電容量スイッチ操作パネルの製造方法。   A method for manufacturing an electrostatic capacitance switch operation panel, wherein the decorative sheet according to any one of claims 1 to 3 and a resin molded product are bonded together with an adhesive. 樹脂成形品の表面に透光表示柄を形成する透光部と遮光部とが形成され、遮光部が絶縁性黒色インクで形成されたものである静電容量スイッチ操作パネル。   A capacitance switch operation panel in which a light-transmitting part and a light-shielding part for forming a light-transmitting display pattern are formed on the surface of a resin molded product, and the light-shielding part is formed of an insulating black ink. 表面上に隣り合う２箇所のスイッチタッチ面の間のＬＣＲメータによる直列等価抵抗値（ＥＳＲ）が１０ＭΩ以上である請求項６に記載の静電容量スイッチ操作パネル。   The capacitance switch operation panel according to claim 6, wherein a series equivalent resistance value (ESR) by an LCR meter between two adjacent switch touch surfaces on the surface is 10 MΩ or more. 静電容量スイッチの検出部の上面に、
樹脂成形品の表面に透光表示柄を形成する透光部と遮光部とが形成され、遮光部が絶縁性黒色インクで形成されたものである静電容量スイッチ操作パネルを備えた電子機器。

On the upper surface of the detection part of the capacitance switch,
An electronic apparatus provided with a capacitance switch operation panel in which a light-transmitting part and a light-shielding part for forming a light-transmitting display pattern are formed on the surface of a resin molded product, and the light-shielding part is formed of an insulating black ink.

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