JP2016182782A - Decorative laminate structure, housing, and electronic apparatus - Google Patents

Decorative laminate structure, housing, and electronic apparatus Download PDF

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JP2016182782A
JP2016182782A JP2015065091A JP2015065091A JP2016182782A JP 2016182782 A JP2016182782 A JP 2016182782A JP 2015065091 A JP2015065091 A JP 2015065091A JP 2015065091 A JP2015065091 A JP 2015065091A JP 2016182782 A JP2016182782 A JP 2016182782A
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refractive index
low refractive
laminated structure
layer
colored layer
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JP6486163B2 (en
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佐藤 弘樹
Hiroki Sato
弘樹 佐藤
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Alps Alpine Co Ltd
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Alps Electric Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide: a decorative laminate structure capable of heightening effectively a contrast of a part in a similar color; a housing provided with the decorative laminate structure on the surface; and an electronic apparatus including the housing.SOLUTION: A decorative laminate structure 20 provided on a surface 11 of a housing 10 of an electronic apparatus 1 includes a colored layer 21, and a low refractive index layer 22 provided under the colored layer 21, having a lower refractive index than the refractive index of the colored layer 21, and formed so as to have a smaller area than the area of the colored layer 21.SELECTED DRAWING: Figure 3

Description

本発明は、装飾に用いられる加飾積層構造体、この加飾積層構造体が表面に設けられた筐体、およびこの筐体を有する電子機器に関する。   The present invention relates to a decorative laminated structure used for decoration, a casing provided with the decorative laminated structure on a surface, and an electronic apparatus having the casing.

装飾に用いられる加飾積層構造体の一例が特許文献1に開示されている。この特許文献1に開示されている加飾積層構造体としての加飾材は、微細凹凸部を下面に有する透明基材と、透明基材の下に形成された着色透明層と、着色透明層の下に形成された黒色層と、を備えている。   An example of a decorative laminated structure used for decoration is disclosed in Patent Document 1. The decorative material as a decorative laminated structure disclosed in Patent Document 1 includes a transparent base material having a fine uneven portion on the lower surface, a colored transparent layer formed under the transparent base material, and a colored transparent layer. And a black layer formed underneath.

この加飾材では、透明基材と着色透明層との間に微細凹凸部が形成されている。そのため、透明基材側から加飾材に入射する光は、一部が微細凹凸部で反射されて、微細凹凸部に対応する位置に鮮明な図柄が得られる。また、黒色層が光を吸収して漆黒の背景が得られる。これにより、透明基材を上面から見たときに、漆黒の背景色の中に、微細凹凸部に対応する位置に彩色模様を浮かび上がらせる。   In this decorating material, fine irregularities are formed between the transparent substrate and the colored transparent layer. Therefore, a part of the light incident on the decorating material from the transparent substrate side is reflected by the fine concavo-convex part, and a clear pattern is obtained at a position corresponding to the fine concavo-convex part. Moreover, a black layer absorbs light and a jet black background is obtained. Thereby, when a transparent base material is seen from an upper surface, a coloring pattern is made to appear in the position corresponding to a fine uneven | corrugated part in the jet black background color.

特開2009−255373号公報JP 2009-255373 A

特許文献1に開示されている加飾材では、微細凹凸部が着色透明層の色の図柄として視認されるとともに微細凹凸部の周囲は漆黒の背景となるので、黒色と黒色以外の色により意匠が構成される。そのため、同系色の部分を複数含み、これら同色系の部分についてコントラストを比較的高めた意匠を構成できなかった。   In the decorative material disclosed in Patent Document 1, since the fine uneven portion is visually recognized as a color pattern of the colored transparent layer and the periphery of the fine uneven portion is a jet black background, the design is made by a color other than black and black. Is configured. For this reason, it has been impossible to construct a design that includes a plurality of similar color parts and that has a relatively high contrast for these same color parts.

そこで本発明は、上記従来の課題を解決するためのものであり、同系色の部分のコントラストを効果的に高めることができる加飾積層構造体、この加飾積層構造体が表面に設けられた筐体、およびこの筐体を備えた電子機器を提供することを目的とする。   Then, this invention is for solving the said conventional subject, The decorative laminated structure which can raise the contrast of the part of the same color effectively, This decorative laminated structure was provided in the surface It is an object to provide a housing and an electronic device including the housing.

上記課題を解決するため、本発明の一態様は、着色層と、前記着色層の下に設けられ、前記着色層の屈折率よりも低い屈折率を有しかつ前記着色層の面積よりも小さい面積に形成された低屈折率層と、を備えたことを特徴とする加飾積層構造体である。このような構成によれば、着色層側から低屈折率層側に向かって見たときに、低屈折率層を備えた部分と、低屈折率層を備えない部分とについて、同色系としかつ明度および色度に差異を生じさせてコントラストを高めることができる。   In order to solve the above problems, one embodiment of the present invention is provided under a colored layer and the colored layer, and has a refractive index lower than that of the colored layer and smaller than an area of the colored layer. A decorative laminated structure comprising: a low refractive index layer formed in an area. According to such a configuration, when viewed from the colored layer side toward the low refractive index layer side, the portion having the low refractive index layer and the portion not having the low refractive index layer have the same color system and The contrast can be increased by making a difference in brightness and chromaticity.

上記加飾積層構造体において、前記低屈折率層が複数設けられ、複数の前記低屈折率層には、異なる屈折率を有する少なくとも2以上の前記低屈折率層が含まれていてもよい。このようにすることで、着色層側から各低屈折率層側に向かって見たときに、一の低屈折率層を備えた部分および一の低屈折率層とは異なる屈折率の他の屈折率層を備えた部分と、いずれの低屈折率層も備えない部分とについて、同色系としかつ明度および色度に差異を生じさせてコントラストを高めることができる。   In the decorative laminated structure, a plurality of the low refractive index layers may be provided, and the plurality of low refractive index layers may include at least two or more low refractive index layers having different refractive indexes. In this way, when viewed from the colored layer side toward each low refractive index layer side, the portion having one low refractive index layer and other refractive index different from the one low refractive index layer Contrast can be enhanced by using the same color system for the portion including the refractive index layer and the portion not including any of the low refractive index layers, and causing differences in brightness and chromaticity.

上記加飾積層構造体において、前記低屈折率層が、無色の樹脂で構成されていてもよい。このようにすることで、低屈折率層を備えた部分と、低屈折率層を備えない部分とを同色系とすることが容易となる。   In the decorative laminated structure, the low refractive index layer may be made of a colorless resin. By doing in this way, it becomes easy to make a part with a low refractive index layer and a part without a low refractive index layer the same color system.

上記加飾積層構造体において、前記着色層が、白色インクで構成されていてもよい。このようにすることで、色度により差異を生じさせてコントラストをさらに高めることができる。   In the decorative laminated structure, the colored layer may be made of white ink. By doing in this way, a contrast can be further raised by making a difference by chromaticity.

本発明の別の一態様は、表面に光反射処理が施された筐体であって、前記表面に、上記加飾積層構造体が設けられていることを特徴とする筐体である。   Another embodiment of the present invention is a casing having a surface subjected to light reflection treatment, wherein the decorative laminated structure is provided on the surface.

本発明のさらに別の一態様は、上記筐体を備えたことを特徴とする電子機器である。   Yet another embodiment of the present invention is an electronic device including the housing.

本発明によれば、同系色の部分のコントラストを効果的に高めることができる。   According to the present invention, the contrast of a similar color portion can be effectively increased.

本発明の第1実施形態にかかる電子機器の斜視図である。1 is a perspective view of an electronic device according to a first embodiment of the present invention. 図1の電子機器の筐体背面の部分拡大図である。It is the elements on larger scale of the housing | casing back surface of the electronic device of FIG. 図2のA−A線に沿う断面図である。It is sectional drawing which follows the AA line of FIG. 本発明の第2実施形態に係る電子機器の筐体背面の部分拡大図である。It is the elements on larger scale of the housing | casing back surface of the electronic device which concerns on 2nd Embodiment of this invention. 図4のA−A線に沿う断面図である。It is sectional drawing which follows the AA line of FIG. 適用例について示す模式図である。It is a schematic diagram shown about an application example. 筐体表面にアルミニウム薄膜が成膜された構成における加飾積層構造体のLを示すプロット図である。It is a plot figure which shows L * of the decorative laminated structure in the structure by which the aluminum thin film was formed into the housing | casing surface. 筐体表面にアルミニウム薄膜が成膜された構成における加飾積層構造体のbを示すプロット図である。It is a plot figure which shows b * of the decorative laminated structure in the structure by which the aluminum thin film was formed into the housing | casing surface. 筐体表面に銀インク印刷が施された構成における加飾積層構造体のLを示すプロット図である。It is a plot figure which shows L * of the decorative laminated structure in the structure by which silver ink printing was given to the housing | casing surface. 筐体表面に銀インク印刷が施された構成における加飾積層構造体のbを示すプロット図である。It is a plot figure which shows b * of the decorative laminated structure in the structure by which silver ink printing was given to the housing | casing surface.

以下、本発明の実施形態を図面に基づいて説明する。なお、以下の説明では、同一の部材には同一の符号を付し、一度説明した部材については適宜その説明を省略する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same members are denoted by the same reference numerals, and the description of the members once described is omitted as appropriate.

(第1実施形態)
図1は、本発明の第1実施形態にかかる電子機器の斜視図である。図2は、図1の電子機器の筐体背面の部分拡大図である。図3は、図2のA−A線に沿う断面図である。
(First embodiment)
FIG. 1 is a perspective view of an electronic apparatus according to the first embodiment of the present invention. FIG. 2 is a partially enlarged view of the rear surface of the housing of the electronic device of FIG. 3 is a cross-sectional view taken along line AA in FIG.

図1に示す本実施形態の電子機器1は、スマートフォンなどの携帯端末である。図2に示すように、この電子機器1が備える筐体10における背面側の表面11には、カメラレンズに並んで加飾積層構造体20が設けられている。   An electronic device 1 according to the present embodiment illustrated in FIG. 1 is a mobile terminal such as a smartphone. As shown in FIG. 2, a decorative laminated structure 20 is provided on the back surface 11 of the housing 10 of the electronic device 1 along with the camera lens.

電子機器1の筐体10は、箱状に形成されており、筐体10には、当該電子機器1の機能を実現するための電子部品やプリント基板などの各種部品が収容される。筐体10の背面側の表面11は、スパッタリング法によるアルミニウム薄膜の成膜や銀インク印刷などが施されて、光を反射可能になっている。また、表面11は、光沢塗料が塗布されたり、研磨処理などが施されたりしていてもよく、映り込みが生じる程度の光反射処理が施されていればよい。   The housing 10 of the electronic device 1 is formed in a box shape, and the housing 10 accommodates various components such as an electronic component and a printed board for realizing the function of the electronic device 1. The surface 11 on the back side of the housing 10 is formed with an aluminum thin film formed by sputtering or silver ink printing, and can reflect light. Further, the surface 11 may be coated with a glossy paint, or may be subjected to a polishing process or the like, and may be subjected to a light reflection process that causes reflection.

図3に示すように、加飾積層構造体20は、着色層21と、着色層21の下(表面11寄り)に設けられた低屈折率層22とを備えている。加飾積層構造体20は、着色層21側から低屈折率層22側に向かって見たときに、これら着色層21および低屈折率層22の重なりによって文字、図形、記号などの意匠が視認される。   As shown in FIG. 3, the decorative laminated structure 20 includes a colored layer 21 and a low refractive index layer 22 provided below the colored layer 21 (close to the surface 11). When the decorative laminated structure 20 is viewed from the colored layer 21 side toward the low refractive index layer 22 side, the design of characters, figures, symbols, etc. is visually recognized by the overlapping of the colored layer 21 and the low refractive index layer 22. Is done.

着色層21は、例えば、バインダに顔料としての二酸化チタンを混合した白色インクで構成されている。着色層21は、白色インクが筐体10の表面11の一部、または全体に塗布されることにより形成されている。着色層21は、例えば、赤色、青色、黄色などの白色以外の色であってもよい。また、着色層21は、あらかじめ着色した合成樹脂をフィルム状に形成したものなどであってもよい。   The colored layer 21 is made of, for example, white ink in which titanium dioxide as a pigment is mixed in a binder. The colored layer 21 is formed by applying white ink to a part or the whole of the surface 11 of the housing 10. The colored layer 21 may be a color other than white, such as red, blue, and yellow. Moreover, the colored layer 21 may be a film formed of a synthetic resin colored in advance.

低屈折率層22は、着色層21を形成する白色インクの塗布に先立って、筐体10の表面に形成され、これにより、低屈折率層22は、筐体10の表面11と着色層21との間に配置される。低屈折率層22は、着色層21の屈折率より低い屈折率を有し、着色層21の面積より小さい面積となるように形成されている。   The low refractive index layer 22 is formed on the surface of the housing 10 prior to the application of the white ink forming the colored layer 21, whereby the low refractive index layer 22 is formed on the surface 11 of the housing 10 and the colored layer 21. Between. The low refractive index layer 22 has a refractive index lower than that of the colored layer 21 and is formed to have an area smaller than the area of the colored layer 21.

低屈折率層22は、例えば、無色の樹脂系塗料、例えば、アクリル樹脂系塗料などで構成されている。これ以外にも、例えば、フッ素系樹脂、多孔質シリカおよびナノファイバーシートよりなる群から選択される少なくとも1種の材料を含むものであってもよい。低屈折率層22についても、無色の合成樹脂をフィルム状に形成したものなどであってもよい。また、低屈折率層22は、無色が好ましいが、例えば、着色層21と同色系の色などの有色であってもよい。   The low refractive index layer 22 is made of, for example, a colorless resin paint, such as an acrylic resin paint. In addition to this, for example, at least one material selected from the group consisting of a fluororesin, porous silica, and a nanofiber sheet may be included. The low refractive index layer 22 may also be a film formed of a colorless synthetic resin. The low refractive index layer 22 is preferably colorless, but may be colored such as the same color as the colored layer 21.

低屈折率層22は、複数の閉気泡を含む樹脂層を含んでいてもよい。例えば、樹脂層にはマイクロカプセルが含まれる。この閉気泡によって実効的な屈折率が低くなる低屈折率層22を比較的容易に形成することができる。また、閉気泡にすることで、低屈折率層22が着色層21と接していても、着色層21となるインクが気泡内に染み込むことがなくなる。   The low refractive index layer 22 may include a resin layer including a plurality of closed cells. For example, the resin layer includes microcapsules. The low refractive index layer 22 whose effective refractive index is lowered by the closed bubbles can be formed relatively easily. In addition, by forming closed cells, even if the low refractive index layer 22 is in contact with the colored layer 21, the ink that becomes the colored layer 21 does not soak into the bubbles.

低屈折率層22は、着色層21より小さい面積となるように形成されていることから、加飾積層構造体20は、低屈折率層22を備えない第1部分20aと、低屈折率層22を備えた第2部分20bと、を有している。   Since the low refractive index layer 22 has a smaller area than the colored layer 21, the decorative laminated structure 20 includes a first portion 20 a that does not include the low refractive index layer 22, and a low refractive index layer. And a second portion 20 b having 22.

本実施形態の電子機器1によれば、加飾積層構造体20の第1部分20aは、白色に発色し、加飾積層構造体20の第2部分20bは、第1部分20aより明度(L)が高くかつ色度(b)が0に近く、より明るく純白に近い白色に発色する。例えば、低屈折率層を備えずに白色インクの塗布回数を変えて白色インクの厚さの異なる同系色の部分を設けた構成では、これらインクの厚さの異なる部分について、明度(L)に差異は生じるものの色度(b)は同程度となる。このことから、上記加飾積層構造体20は、同系色の部分について、明度に加えて色度にも差異を設けてコントラストを高めることができる。そのため、着色層21と低屈折率層22との重なりによる意匠が、より明確に視認される。 According to the electronic device 1 of the present embodiment, the first portion 20a of the decorative laminated structure 20 is colored white, and the second portion 20b of the decorative laminated structure 20 is lighter than the first portion 20a (L * ) Is high, and the chromaticity (b * ) is close to 0, and the color is brighter and closer to pure white. For example, in a configuration in which a similar color portion having a different thickness of white ink is provided by changing the number of times white ink is applied without providing a low refractive index layer, the lightness (L * ) of these portions having different thicknesses of ink is provided. However, the chromaticity (b * ) is almost the same. From this, the said decorative laminated structure 20 can provide a difference in chromaticity in addition to lightness for a similar color portion to enhance contrast. Therefore, the design by the overlapping of the colored layer 21 and the low refractive index layer 22 is visually recognized more clearly.

(第2実施形態)
図4は、本発明の第2実施形態に係る電子機器の筐体背面の部分拡大図である。図5は、図4のA−A線に沿う断面図である。
(Second Embodiment)
FIG. 4 is a partially enlarged view of the rear surface of the casing of the electronic device according to the second embodiment of the present invention. FIG. 5 is a cross-sectional view taken along line AA in FIG.

本実施形態の電子機器1Aは、第1実施形態と同様の携帯端末である。図4に示すように、この電子機器1Aが備える筐体10における背面側の表面11には、加飾積層構造体20Aが重ねて設けられている。   The electronic device 1A of the present embodiment is a portable terminal similar to that of the first embodiment. As shown in FIG. 4, a decorative laminated structure 20 </ b> A is provided on the surface 11 on the back side of the housing 10 included in the electronic apparatus 1 </ b> A.

図5に示すように、加飾積層構造体20Aは、着色層21、着色層21の下に設けられた低屈折率層22および他の低屈折率層23を備えている。加飾積層構造体20Aは、着色層21側から低屈折率層22側または他の低屈折率層23側に向かって見たときに、これら着色層21、低屈折率層22および他の低屈折率層23の重なりによって文字、図形、記号などの意匠が視認される。   As illustrated in FIG. 5, the decorative laminated structure 20 </ b> A includes a colored layer 21, a low refractive index layer 22 provided under the colored layer 21, and another low refractive index layer 23. When the decorative laminated structure 20A is viewed from the colored layer 21 side toward the low refractive index layer 22 side or the other low refractive index layer 23 side, the colored layer 21, the low refractive index layer 22, and other low refractive index layers 22 Designs such as letters, figures and symbols are visually recognized by the overlapping of the refractive index layers 23.

他の低屈折率層23についても、上記低屈折率層23と同様に、着色層21を形成する白色インクの塗布に先立って、筐体10の表面に形成され、これにより、他の低屈折率層23は、低屈折率層22と重ならないようにして筐体10の表面11と着色層21との間に配置される。他の低屈折率層23は、着色層21の屈折率より低い屈折率を有し、上記低屈折率層22と他の低屈折率層23とを合わせても着色層21の面積より小さい面積となるように形成されている。また、他の低屈折率層23は、低屈折率層22の屈折率と異なる屈折率を有している。   Similarly to the low refractive index layer 23, the other low refractive index layers 23 are formed on the surface of the housing 10 prior to the application of the white ink forming the colored layer 21. The refractive index layer 23 is disposed between the surface 11 of the housing 10 and the colored layer 21 so as not to overlap the low refractive index layer 22. The other low refractive index layer 23 has a refractive index lower than the refractive index of the colored layer 21, and even if the low refractive index layer 22 and the other low refractive index layer 23 are combined, the area is smaller than the area of the colored layer 21. It is formed to become. Further, the other low refractive index layer 23 has a refractive index different from that of the low refractive index layer 22.

他の低屈折率層23は、上記低屈折率層22と同様に、例えば、無色の樹脂系塗料、例えば、アクリル樹脂系塗料などで構成されている。これ以外にも、例えば、フッ素系樹脂、多孔質シリカおよびナノファイバーシートよりなる群から選択される少なくとも1種の材料を含むものであってもよい。他の低屈折率層23についても、無色の合成樹脂をフィルム状に形成したものなどであってもよい。また、他の低屈折率層23も、無色が好ましいが、例えば、着色層21と同色系の色などの有色であってもよい。   The other low refractive index layer 23 is made of, for example, a colorless resin-based paint, for example, an acrylic resin-based paint, similarly to the low refractive index layer 22. In addition to this, for example, at least one material selected from the group consisting of a fluororesin, porous silica, and a nanofiber sheet may be included. The other low refractive index layers 23 may also be formed by forming a colorless synthetic resin into a film. The other low refractive index layers 23 are also preferably colorless, but may be colored such as the same color as the colored layer 21.

低屈折率層22および他の低屈折率層23は、互いに重ならずかつこれらを合わせても着色層21より小さい面積となるように形成されていることから、加飾積層構造体20Aは、低屈折率層22および他の低屈折率層23のいずれも備えない第1部分20aと、低屈折率層22を備えた第2部分20bと、他の低屈折率層23を備えた第3部分20cと、を有している。   The low refractive index layer 22 and the other low refractive index layer 23 are formed so as not to overlap each other and to have an area smaller than the colored layer 21 even if they are combined, A first portion 20 a that includes neither the low refractive index layer 22 nor another low refractive index layer 23, a second portion 20 b that includes the low refractive index layer 22, and a third portion that includes the other low refractive index layer 23. Part 20c.

本実施形態の電子機器1Aによれば、加飾積層構造体20Aの第1部分20aは、白色に発色し、加飾積層構造体20Aの第2部分20bおよび第3部分20cは、第1部分20aより明度(L)が高くかつ色度(b)が0に近く、より明るく純白に近い白色に発色する。そのため、加飾積層構造体20Aは、上記加飾積層構造体20と同様に、同色系の部分について明度に加えて色度にも差異を生じさせてコントラストを高めることができる。そのため、着色層21と低屈折率層22および他の低屈折率層23との重なりによる意匠が、より明確に視認される。さらには、第2部分20bおよび第3部分20cにおける明度および色度も異なるものとなり、装飾性を効果的に高めることができる。 According to the electronic apparatus 1A of the present embodiment, the first portion 20a of the decorative laminated structure 20A is colored white, and the second portion 20b and the third portion 20c of the decorative laminated structure 20A are the first portion. The lightness (L * ) is higher than 20a and the chromaticity (b * ) is close to 0, and the color is brighter and whiter than pure white. Therefore, similarly to the decorative laminated structure 20, the decorative laminated structure 20A can increase the contrast by causing a difference in chromaticity in addition to the lightness of the same color system portion. Therefore, the design due to the overlapping of the colored layer 21 with the low refractive index layer 22 and the other low refractive index layer 23 is more clearly visible. Furthermore, the brightness and chromaticity of the second portion 20b and the third portion 20c are also different, and the decorativeness can be effectively enhanced.

(適用例)
次に、上記実施形態にかかる加飾積層構造体の適用例について説明する。
(Application example)
Next, an application example of the decorative laminated structure according to the above embodiment will be described.

図6には、加飾積層構造体20が設けられたコンピュータ400の例(ノート型コンピュータ)が表される。コンピュータ400は、ディスプレイ410、キーボード420、入力パッド430、本体筐体440、などを備える。本体筐体440の上面手前の箇所に加飾積層構造体20が設けられる。なお、電子機器400はコンピュータに限定されず、携帯電話、タブレット型端末、テレビなど他の電子機器であってもよい。   FIG. 6 illustrates an example (notebook computer) of a computer 400 provided with the decorative laminated structure 20. The computer 400 includes a display 410, a keyboard 420, an input pad 430, a main body housing 440, and the like. The decorative laminated structure 20 is provided at a location in front of the upper surface of the main body housing 440. Note that the electronic device 400 is not limited to a computer, and may be another electronic device such as a mobile phone, a tablet terminal, or a television.

以上説明したように、本実施形態に係る加飾積層構造体、筐体および電子機器によれば、同系色の部分のコントラストを効果的に高めることができる。これにより、装飾性を高めることができる。   As described above, according to the decorative laminated structure, the housing, and the electronic device according to the present embodiment, the contrast of the similar color portion can be effectively increased. Thereby, decorativeness can be improved.

なお、上記に本実施形態およびその適用例を説明したが、本発明はこれらの例に限定されるものではない。前述の各実施形態またはその適用例に対して、当業者が適宜、構成要素の追加、削除、設計変更を行ったものや、各実施形態の特徴を適宜組み合わせたものも、本発明の要旨を備えている限り、本発明の範囲に含有される。   In addition, although this embodiment and its application example were demonstrated above, this invention is not limited to these examples. Those in which those skilled in the art appropriately added, deleted, and changed the design of each of the above-described embodiments or application examples thereof, and combinations of the features of each embodiment as appropriate also include the gist of the present invention. As long as it is provided, it is included in the scope of the present invention.

(検証)
以下に示す実施例1、2および比較例1〜4を作製するとともに、L表色系の測定を行い、本発明の効果を検証した。
(Verification)
While producing Examples 1 and 2 and Comparative Examples 1 to 4 shown below, the L * a * b * color system was measured to verify the effects of the present invention.

(実施例1)
筐体表面に、スパッタリング法によりアルミニウム薄膜を成膜し、このアルミニウム薄膜の上にアクリル樹脂(PMMA)からなる厚さ約2μm、屈折率1.49の低屈折率層を形成し、低屈折率層の上に白色インク(ゼネラル社、白インク0205T)を1回塗布して厚さ3μm、屈折率2.71(顔料である二酸化チタンの屈折率)の着色層を形成して加飾積層構造体を構成した。
Example 1
An aluminum thin film is formed on the surface of the casing by a sputtering method, and a low refractive index layer made of acrylic resin (PMMA) with a thickness of about 2 μm and a refractive index of 1.49 is formed on the aluminum thin film. A white ink (General, White ink 0205T) is applied once on the layer to form a colored layer having a thickness of 3 μm and a refractive index of 2.71 (refractive index of titanium dioxide, which is a pigment). Constructed the body.

(実施例2)
筐体表面に、銀インク印刷を施し、この銀インク上に実施例1と同一の低屈折率層および着色層を形成して加飾積層構造体を構成した。
(Example 2)
Silver ink printing was performed on the surface of the housing, and the same low refractive index layer and colored layer as in Example 1 were formed on the silver ink to form a decorative laminated structure.

(比較例1)
筐体表面に、スパッタリング法により実施例1と同一のアルミニウム薄膜を成膜し、このアルミニウム薄膜の上に実施例1と同一の白色インクを1回塗布して実施例1と同一の着色層を形成して加飾積層構造体を構成した。
(Comparative Example 1)
The same aluminum thin film as in Example 1 is formed on the surface of the casing by sputtering, and the same white ink as in Example 1 is applied once on this aluminum thin film to form the same colored layer as in Example 1. The decorative laminated structure was formed.

(比較例2)
筐体表面に、スパッタリング法により実施例1と同一のアルミニウム薄膜を成膜し、このアルミニウム薄膜の上に実施例1と同一の白色インクを2回塗布して厚さ6μm、屈折率2.71の着色層を形成して加飾積層構造体を構成した。
(Comparative Example 2)
The same aluminum thin film as that of Example 1 is formed on the surface of the casing by sputtering, and the same white ink as that of Example 1 is applied twice on this aluminum thin film to have a thickness of 6 μm and a refractive index of 2.71. The decorative layered structure was configured by forming a colored layer.

(比較例3)
筐体表面に、実施例2と同一の銀インク印刷を施し、この銀インク上に実施例2と同一の白色インクを1回塗布して実施例2と同一の着色層を形成して加飾積層構造体を構成した。
(Comparative Example 3)
The same silver ink printing as in Example 2 is performed on the surface of the housing, and the same white ink as in Example 2 is applied once on this silver ink to form the same colored layer as in Example 2 and decorated. A laminated structure was constructed.

(比較例4)
筐体表面に、実施例2と同一の銀インク印刷を施し、この銀インク上に実施例2と同一の白色インクを2回塗布して厚さ6μm、屈折率2.71の着色層を形成して加飾積層構造体を構成した。
(Comparative Example 4)
The same silver ink printing as in Example 2 is applied to the surface of the housing, and the same white ink as in Example 2 is applied twice on this silver ink to form a colored layer having a thickness of 6 μm and a refractive index of 2.71. And the decorative laminated structure was comprised.

これら実施例1、2および比較例1〜4について、CIE 1976 L色空間の色座標を測定した。測定には、(コニカミノルタ社、CM−2600d))を用いた。そして、L(明度)およびb(色度)について、筐体表面処理毎にまとめてプロットしたものを、図7〜図10に示す。 For Examples 1 and 2 and Comparative Examples 1 to 4, the color coordinates of the CIE 1976 L * a * b * color space were measured. (Konica Minolta, CM-2600d)) was used for the measurement. FIG. 7 to FIG. 10 show L * (brightness) and b * (chromaticity) plotted together for each case surface treatment.

図7は、筐体表面にアルミニウム薄膜が成膜された構成における加飾積層構造体のLを示すプロット図であり、図8は、加飾積層構造体のbを示すプロット図である。図9は、筐体表面に銀インク印刷が施された構成における加飾積層構造体のLを示すプロット図であり、図10は、加飾積層構造体のbを示すプロット図である。 FIG. 7 is a plot diagram showing L * of the decorative laminated structure in a configuration in which an aluminum thin film is formed on the surface of the housing, and FIG. 8 is a plot diagram showing b * of the decorative laminated structure. . FIG. 9 is a plot diagram illustrating L * of the decorative laminated structure in a configuration in which silver ink printing is performed on the housing surface, and FIG. 10 is a plot diagram illustrating b * of the decorative multilayer structure. .

図7、図8から明らかなように、実施例1は、比較例1に比べてLが高く、bが0に近い。すなわち、実施例1は、比較例1に比べてより明るく、かつ、青味が少ないので、比較例1より明るく純白に近い白色に視認される。また、実施例1は、同一の白色インクを2回塗布した構成の比較例2に比べてもbが0に近い。すなわち、実施例1は、比較例2に比べて青味が少ないので、比較例2より純白に近い白色に視認される。 As is clear from FIGS. 7 and 8, Example 1 has a higher L * and b * is close to 0 compared to Comparative Example 1. That is, since Example 1 is brighter and less bluish than Comparative Example 1, it is visually recognized as white that is brighter than Comparative Example 1 and close to pure white. In Example 1, b * is close to 0 as compared with Comparative Example 2 in which the same white ink is applied twice. That is, since Example 1 has less bluish color than Comparative Example 2, it is visually recognized as white that is closer to pure white than Comparative Example 2.

同様に、図9、図10から明らかなように、実施例2は、比較例3に比べてLが高く、bが0に近い。すなわち、実施例2は、比較例3に比べてより明るく、かつ、青味が少ないので、比較例3より明るく純白に近い白色に視認される。また、実施例2は、同一の白色インクを2回塗布した構成の比較例4に比べてもbが0に近い。すなわち、実施例2は、比較例4に比べて青味が少ないので、比較例4より純白に近い白色に視認される。 Similarly, as is clear from FIGS. 9 and 10, Example 2 has a higher L * and b * is close to 0 compared to Comparative Example 3. That is, since Example 2 is brighter and less bluish than Comparative Example 3, it is visually recognized as white that is brighter than Comparative Example 3 and close to pure white. In Example 2, b * is close to 0 as compared with Comparative Example 4 in which the same white ink was applied twice. That is, since Example 2 has less bluish color than Comparative Example 4, it is visually recognized as white that is closer to pure white than Comparative Example 4.

このことから、本発明によれば、低屈折率層を備えない部分と低屈折率層を備えた部分とについて、明度および色度に差異を生じさせてコントラストを高めることができることが明らかとなった。   From this, according to the present invention, it is clear that the contrast can be enhanced by causing a difference in brightness and chromaticity between the portion not provided with the low refractive index layer and the portion provided with the low refractive index layer. It was.

1、1A 電子機器
10 筐体
11 (筐体の)表面
20、20A 加飾積層構造体
20a 第1部分
20b 第2部分
20c 第3部分
21 着色層
22 低屈折率層
23 他の低屈折率層
DESCRIPTION OF SYMBOLS 1, 1A Electronic device 10 Case 11 (Case) surface 20, 20A Decorated laminated structure 20a 1st part 20b 2nd part 20c 3rd part 21 Colored layer 22 Low refractive index layer 23 Other low refractive index layers

Claims (6)

着色層と、
前記着色層の下に設けられ、前記着色層の屈折率よりも低い屈折率を有しかつ前記着色層の面積よりも小さい面積に形成された低屈折率層と、
を備えていることを特徴とする加飾積層構造体。
A colored layer;
A low refractive index layer provided under the colored layer, having a refractive index lower than the refractive index of the colored layer and formed in an area smaller than the area of the colored layer;
A decorative laminated structure characterized by comprising:
前記低屈折率層が複数設けられ、
複数の前記低屈折率層には、異なる屈折率を有する少なくとも2以上の前記低屈折率層が含まれている請求項1に記載の加飾積層構造体。
A plurality of the low refractive index layers are provided,
The decorative laminated structure according to claim 1, wherein the plurality of low refractive index layers include at least two or more low refractive index layers having different refractive indexes.
前記低屈折率層が、無色の樹脂で構成されている請求項1または2に記載の加飾積層構造体。   The decorative laminated structure according to claim 1 or 2, wherein the low refractive index layer is made of a colorless resin. 前記着色層が、白色インクで構成されている請求項1から3のいずれか一項に記載の加飾積層構造体。   The decorative laminated structure according to any one of claims 1 to 3, wherein the colored layer is made of white ink. 表面に光反射処理が施された筐体であって、
前記表面に、請求項1から4のいずれか一項に記載の加飾積層構造体が設けられていることを特徴とする筐体。
A housing with a light reflection treatment on the surface,
A case wherein the decorative laminated structure according to any one of claims 1 to 4 is provided on the surface.
請求項5に記載の筐体を備えたことを特徴とする電子機器。   An electronic apparatus comprising the casing according to claim 5.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021504192A (en) * 2017-12-15 2021-02-15 エルジー・ケム・リミテッド Decorative members and their manufacturing methods

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5446479A (en) * 1977-09-20 1979-04-12 Mitsubishi Electric Corp Negative plate for photo mask
JPH1158581A (en) * 1997-08-25 1999-03-02 Toppan Printing Co Ltd Laminated material for preventing forgery
JP2006255894A (en) * 2005-03-15 2006-09-28 Nissha Printing Co Ltd Hairline like decorative sheet
JP2009166855A (en) * 2008-01-11 2009-07-30 Toppan Printing Co Ltd Plastic container

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5446479A (en) * 1977-09-20 1979-04-12 Mitsubishi Electric Corp Negative plate for photo mask
JPH1158581A (en) * 1997-08-25 1999-03-02 Toppan Printing Co Ltd Laminated material for preventing forgery
JP2006255894A (en) * 2005-03-15 2006-09-28 Nissha Printing Co Ltd Hairline like decorative sheet
JP2009166855A (en) * 2008-01-11 2009-07-30 Toppan Printing Co Ltd Plastic container

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021504192A (en) * 2017-12-15 2021-02-15 エルジー・ケム・リミテッド Decorative members and their manufacturing methods
JP7091597B2 (en) 2017-12-15 2022-06-28 エルジー・ケム・リミテッド Decorative members and their manufacturing methods

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