JP2006168335A - Peep preventive film - Google Patents

Peep preventive film Download PDF

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Publication number
JP2006168335A
JP2006168335A JP2004382544A JP2004382544A JP2006168335A JP 2006168335 A JP2006168335 A JP 2006168335A JP 2004382544 A JP2004382544 A JP 2004382544A JP 2004382544 A JP2004382544 A JP 2004382544A JP 2006168335 A JP2006168335 A JP 2006168335A
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Prior art keywords
light
film
adhesive layer
peep
resin film
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JP2004382544A
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Japanese (ja)
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Kyoji Shinko
恭司 新子
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OBIKAWA KK
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OBIKAWA KK
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Priority to JP2004382544A priority Critical patent/JP2006168335A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a highly versatile peep preventive film having excellent peep preventive performance, capable of being produced at a low cost. <P>SOLUTION: This peep preventive film is constituted by integrally laminating and fixing a light-permeable resin film 3 having a multi-layer structure and a color-developing function by the interference of internally reflected light on a light-permeable base film 4 via an adhesive layer 7 mixed with light screening pigments 7a. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

この発明は、携帯電話機やコンピュータ等の表示画面に装着使用される覗き見防止フィルムに関する。  The present invention relates to a peep prevention film that is used on a display screen of a mobile phone or a computer.

携帯電話機やコンピュータの表示画面が側方から覗き込まれることがないように、最近ではその表示画面に覗き見防止フィルムを貼ることが行なわれている。しかしながら現状のものは非常に高価であり汎用性に乏しい。  In order to prevent the display screen of a mobile phone or a computer from being looked into from the side, recently, a peep prevention film has been put on the display screen. However, the current one is very expensive and lacks versatility.

この発明は、覗き見防止性能に優れるとともに安価に製造できて汎用性に富む覗き見防止フィルムを提供することを目的とする。  An object of the present invention is to provide a peep prevention film which is excellent in peep prevention performance and can be manufactured at low cost and is versatile.

この発明の覗き見防止フィルムは、多層構造で内部反射光の干渉により発色機能を有する透光性樹脂フィルムが、光遮断用の顔料が混入された接着剤層を介して透光性ベースフィルム上に一体に積層固着されてなる構成を備える。  The peep prevention film according to the present invention is a multi-layered translucent resin film having a coloring function due to interference of internally reflected light, on the translucent base film through an adhesive layer mixed with a light blocking pigment. To be integrally laminated and fixed.

上記構成によれば、透光性樹脂フィルムにおいて光干渉による発色があり、この発色は通常透光性樹脂フィルムを真上位置から見るより斜め方向位置から見た際(覗き見動作に相当)に顕著に確認され、この発色により透光性樹脂フィルムの斜め方向位置から見た際の透視度が低下されて覗き見防止機能が発揮される。  According to the above configuration, the translucent resin film has a color due to light interference, and this color is usually generated when the translucent resin film is viewed from an oblique position rather than when viewed from directly above (equivalent to a peeping operation). Remarkably confirmed, this color development reduces the degree of transparency when viewed from the oblique direction position of the translucent resin film and exhibits a peeping prevention function.

上記の発色が透光性樹脂フィルムを真上位置から見た場合より斜め方向位置から見た場合の方が顕著に確認されるのは、次の理由によるものと考えられる。すなわち、発色現象は透光性樹脂フィルムへの表面からの入射光が積層構造を通過する際に各積層面で異なる方向に反射され、それら反射光が互いに干渉することで起こり、真上位置から透光性樹脂フィルム面上を見る場合、通常真上位置には見る者の頭等があることでそれに遮られて斜め方向位置から見るより入射光量が減少し、それに伴って反射光も減少して光の干渉が起こりにくくなるからである。  The reason why the above color development is more conspicuously confirmed when the translucent resin film is viewed from an oblique position than when the translucent resin film is viewed from directly above is considered to be due to the following reason. That is, the coloring phenomenon occurs when incident light from the surface of the translucent resin film is reflected in different directions on each laminated surface when passing through the laminated structure, and these reflected lights interfere with each other, and from the position directly above When viewing on the surface of the translucent resin film, there is usually a viewer's head at the position directly above, so that the amount of incident light is reduced compared to when viewed from an oblique position, and the reflected light also decreases accordingly. This is because light interference is less likely to occur.

また、接着剤層内を光が接着剤層面方向に対して直交する方向に進む場合と傾斜する方向に進む場合では後者の方が接着剤層内における経路が長くなる分混入される黒色等の光遮断用の顔料に遮断される光量が多くなる。その結果、斜め方向より見た際の方が接着剤層の透視度が低くなって覗き見防止機能が発揮される。  In addition, when the light travels in the direction perpendicular to the adhesive layer surface direction and the direction in which the light travels in the adhesive layer, the latter is mixed in as much as the path in the adhesive layer becomes longer. The amount of light blocked by the light blocking pigment increases. As a result, when viewed from an oblique direction, the transparency of the adhesive layer is lowered, and the peep prevention function is exhibited.

上記透光性樹脂フィルムと接着剤層それぞれにおける覗き見防止機能が合わせ発揮されることでこの発明の覗き見防止フィルムは優れた覗き見防止性能を有する。  The peeping prevention film of the present invention has excellent peeping prevention performance by combining and exhibiting the peeping prevention functions of the translucent resin film and the adhesive layer.

この発明によれば、多層構造で光干渉により発色機能を有する透光性樹脂フィルムが光遮断用の顔料が混入された接着剤層を介して透光性ベースフィルム上に貼られた構成によって覗き見防止性能に優れるフィルムが得られ、これにより安価に製造できて汎用性に富む覗き見防止フィルムが提供できるようになる。  According to the present invention, the light-transmitting resin film having a multi-layered structure and having a color developing function by light interference is looked into by a configuration in which the light-transmitting pigment is mixed on the light-transmitting base film through the adhesive layer mixed therein. A film having excellent anti-sight performance can be obtained, and thereby, a peep-preventing film that can be manufactured at low cost and is versatile can be provided.

図1はこの発明の覗き見防止フィルムを用いた携帯電話機装着用の物品の外観斜視図、図2はその積層構成説明図である。  FIG. 1 is an external perspective view of an article for mounting a mobile phone using the peep prevention film of the present invention, and FIG.

物品1はポリエステル製の透光性保護用フィルム(厚み21μm)2と、透光性樹脂フィルムとしてのマルチライヤーフィルム(例えば帝人株式会社製 厚み19μm)3と、ポリエステル製の透光性ベースフィルム(厚み188μm)4とが順次上方から透光性のアクリル系接着剤層(厚み20μm)6、7を介して積層固定され、さらに、透光性ベースフィルム4の下面に透光性粘着剤層8を介してポリエチレン製の離形シート9が貼り付けられて構成されている。マルチライヤーフィルム3の上面にはオフセット印刷によるデザイン模様10が付されている。物品1は離形シート9が剥されてその透光性粘着剤層8面が携帯電話機の表示面に貼り付けられて使用される。上記のマルチライヤーフィルム3と接着剤層7と透光性ベースフィルム4とによりこの発明の覗き見防止フィルムが構成される。  The article 1 includes a polyester translucent protective film (thickness 21 μm) 2, a multi-layer film (for example, Teijin Limited thickness 19 μm) 3 as a translucent resin film, and a polyester translucent base film ( And a light-transmitting pressure-sensitive adhesive layer 8 on the lower surface of the light-transmitting base film 4. A release sheet 9 made of polyethylene is attached to the sheet. A design pattern 10 by offset printing is attached to the upper surface of the multi-layer film 3. The article 1 is used after the release sheet 9 is peeled off and the surface of the light-transmitting pressure-sensitive adhesive layer 8 is attached to the display surface of the mobile phone. The multi-layer film 3, the adhesive layer 7, and the translucent base film 4 constitute the peep prevention film of the present invention.

以下、図3の拡大断面構成図により覗き見防止フィルムの詳細構成、さらにその覗き見防止機能について説明する。  Hereinafter, the detailed configuration of the peep prevention film and its peep prevention function will be described with reference to the enlarged sectional configuration diagram of FIG.

マルチライヤーフィルム3は多層構造で、例えばポリエステルとナイロンの2種の屈折率の異なる樹脂層が交互に60層程度積層されて構成されたもので、マルチライヤーフィルム3表面からの入射光Xはその積層構造を通過する際に各積層面で異なる方向に反射され、それら反射光Xが互いに干渉することで発色する。  The multi-layer film 3 has a multi-layer structure, and is formed by alternately laminating about 60 resin layers having different refractive indexes, for example, polyester and nylon, and the incident light X from the surface of the multi-layer film 3 is When passing through the laminated structure, it is reflected in different directions on each laminated surface, and the reflected light X is colored by interfering with each other.

接着剤層7には光遮断用の黒色の顔料(粒子)7aが、例えば、0.4重量%の割合において混入されこの接着剤層7を通過する光はその顔料7aに一部が遮られる。接着剤層7面に対して直交する方向に進む光より斜め方向に進む光の方がその接着剤層7内経路が長くなる(L1<L2)ことで顔料7aに衝突する割合が多くなる。なお、上記接着剤層6にはデザイン模様10が物品の表面から明瞭に見えるように黒色の顔料は混入されていない。  A black pigment (particle) 7a for blocking light is mixed in the adhesive layer 7 at a ratio of 0.4% by weight, for example, and light passing through the adhesive layer 7 is partially blocked by the pigment 7a. . The light traveling in the oblique direction rather than the light traveling in the direction orthogonal to the surface of the adhesive layer 7 has a longer path in the adhesive layer 7 (L1 <L2), so that the ratio of colliding with the pigment 7a increases. The adhesive layer 6 is not mixed with a black pigment so that the design pattern 10 can be clearly seen from the surface of the article.

覗き見防止フィルムが携帯電話機の表示画面上に貼られて使用された場合、その下方からの表示光は直交する方向、傾斜する方向それぞれにおいて覗き見防止フィルム内に侵入するが、直交する方向において侵入した表示光Y1は接着剤層7内において経路L1が短いことで顔料7aにあまり遮られず、また、真上位置Aから見た際にはマルチライヤーフィルム3があまり発色していないことでその表示光Y1を十分に目視できる。  When a peep prevention film is used on a display screen of a mobile phone, the display light from below enters the peep prevention film in the orthogonal direction and the inclined direction, respectively. The intruding display light Y1 is not much blocked by the pigment 7a due to the short path L1 in the adhesive layer 7, and the multi-layer film 3 is not colored so much when viewed from the position A directly above. The display light Y1 is sufficiently visible.

これに対して、傾斜する方向において侵入した表示光Y2は接着剤層7内において経路L2が長くなることで顔料7aに遮られる割合が多く、また、斜め方向位置Bから見た際にはマルチライヤーフィルム3が反射光xの干渉より発色していることで、斜め方向位置Bからは表示光Y2を十分に目視できない。すなわち、斜め方向位置Bから見た場合には覗き見防止フィルムは接着剤層7、マルチライヤーフィルム3の透視度がともに低下する状態となることで表示光Y2の黙視が困難となる。なお、図3において表示光Y1、Y2は屈折、反射の動作を省略した基本光路において示している。  On the other hand, the display light Y2 that has entered in the tilting direction is largely blocked by the pigment 7a due to the length of the path L2 in the adhesive layer 7, and when viewed from the diagonal position B, the display light Y2 Since the lier film 3 is colored by the interference of the reflected light x, the display light Y2 cannot be sufficiently visually observed from the oblique position B. That is, when viewed from the oblique position B, the peeping prevention film is in a state in which the transparency of the adhesive layer 7 and the multi-layer film 3 are both lowered, making it difficult to blind the display light Y2. In FIG. 3, the display lights Y1 and Y2 are shown in a basic optical path in which refraction and reflection operations are omitted.

上記のように斜め方向位置Bからの表示光Y2の目視が十分にできないことで覗き見防止機能が発揮され、この点は実施品の目視テストにより確認されている。  As described above, since the display light Y2 from the oblique direction position B cannot be sufficiently visually observed, a peeping prevention function is exhibited, and this point is confirmed by a visual test of the implemented product.

この発明の覗き見防止フィルムを用いて構成される物品の実施形態の斜視図  The perspective view of embodiment of the article comprised using the peep prevention film of this invention この発明の覗き見防止フィルムを用いて構成される物品の実施形態の積層構成説明図  Lamination structure explanatory drawing of embodiment of an article constituted using a peep prevention film of this invention この発明の覗き見防止フィルムの実施形態の拡大断面構成図  The expanded cross-section block diagram of embodiment of the peep prevention film of this invention

符号の説明Explanation of symbols

3 マルチライヤーフィルム(透光性樹脂フィルム)
4 透光性ベースフィルム
7 接着剤層
7a 顔料(光遮断用の顔料)
3 Multilayer film (Translucent resin film)
4 translucent base film 7 adhesive layer 7a pigment (pigment for light blocking)

Claims (1)

多層構造で内部反射光の干渉により発色機能を有する透光性樹脂フィルムが、光遮断用の顔料が混入された接着剤層を介して透光性ベースフィルム上に一体に積層固着されてなることを特徴とする覗き見防止フィルム。A translucent resin film having a color development function due to interference of internally reflected light in a multilayer structure is integrally laminated and fixed on the translucent base film via an adhesive layer mixed with a light blocking pigment. A peep prevention film characterized by
JP2004382544A 2004-12-14 2004-12-14 Peep preventive film Withdrawn JP2006168335A (en)

Priority Applications (1)

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JP2004382544A JP2006168335A (en) 2004-12-14 2004-12-14 Peep preventive film

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010085486A (en) * 2008-09-29 2010-04-15 Kalbas Japan Ltd Peep prevention filter
JP2021051161A (en) * 2019-09-24 2021-04-01 東海光学株式会社 Filter, eyeglass lens, camera filter, window plate, and sunvisor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010085486A (en) * 2008-09-29 2010-04-15 Kalbas Japan Ltd Peep prevention filter
JP2021051161A (en) * 2019-09-24 2021-04-01 東海光学株式会社 Filter, eyeglass lens, camera filter, window plate, and sunvisor
JP7350301B2 (en) 2019-09-24 2023-09-26 東海光学株式会社 Filters, eyeglass lenses, camera filters, window plates and sun visors

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