JP2007221609A - Exterior casing with antenna - Google Patents

Exterior casing with antenna Download PDF

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Publication number
JP2007221609A
JP2007221609A JP2006041724A JP2006041724A JP2007221609A JP 2007221609 A JP2007221609 A JP 2007221609A JP 2006041724 A JP2006041724 A JP 2006041724A JP 2006041724 A JP2006041724 A JP 2006041724A JP 2007221609 A JP2007221609 A JP 2007221609A
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Prior art keywords
antenna
film
molded product
resin molded
resin
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Japanese (ja)
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Tatsuo Ishibashi
達男 石橋
Shuzo Okumura
秀三 奥村
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Nissha Printing Co Ltd
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Nissha Printing Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an exterior casing with an antenna which has no failure in external appearance in a portion for covering through holes for power feed on the surface of a decorative film. <P>SOLUTION: The exterior casing with an antenna is provided with a resin molded body 2 constituting an exterior casing body; a decorative film 3 for covering the external surface of the resin molded body 2; and an antenna film 6 having planar antennas 4 each consisting of a conductive layer and formed on a film base material 5, and sandwiched and provided between the resin molded body 2 and the decorative film 3. In this casing, the resin molded body 2 has through holes 2a for power feed to expose power feeding sections 4a of the planar antennas 4, and a reinforcing plate 10 sandwiched and provided so as to cover the through holes 2a for power feed is provided between the decorative film 3 and the antenna film 6. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、携帯電話、PDA、MP3プレーヤー等の小型携帯機器の外装筐体内にアンテナが埋設されたアンテナ付き外装筺体に関する。   The present invention relates to an outer casing with an antenna in which an antenna is embedded in an outer casing of a small portable device such as a mobile phone, a PDA, or an MP3 player.

携帯電話機はもとより、PDA、MP3プレーヤー等の小型携帯機器に外界との通信機能を付与するにはアンテナを必要とするが、このアンテナは、小型化、外観デザインの観点等から携帯機器の外部に突出させずに内部に組み込まれることが求められる(例えば、特許文献1参照)。   An antenna is required to give communication functions to the outside world to small mobile devices such as PDAs and MP3 players as well as mobile phones. This antenna is external to the mobile device from the viewpoint of miniaturization and appearance design. It is required to be incorporated inside without protruding (see, for example, Patent Document 1).

しかし、機器内部には電磁波の不要輻射の影響を排除するための金属シールドケースやグランドプレーンが存在し、これらがアンテナ性能に影響を与えるという問題がある。こうした機器内部の金属層のアンテナへの影響を少なくするには、出来るだけアンテナを金属層から遠ざけるように外装筐体とアンテナを複合化するとよい(図4中、アンテナ付き外装筺体1を参照)。   However, there is a metal shield case and ground plane for eliminating the influence of unnecessary radiation of electromagnetic waves inside the device, and there is a problem that these affect antenna performance. In order to reduce the influence of the metal layer inside the device on the antenna, it is preferable to combine the outer casing and the antenna so that the antenna is as far away from the metal layer as possible (see the outer casing 1 with an antenna in FIG. 4). .

外装筐体とアンテナとの複合化の形態としては、まず、1)外装筐体の外側表面に導電層からなる平面アンテナが形成された形態、2)外装筐体の内側表面に前記平面アンテナが形成された形態などが考えられるが、1)の場合は外来からの衝撃等が加わりやすいので平面アンテナの損傷が問題となり、他方、2)の場合は外装筐体内面のリブ等の凹凸形状によりアンテナパターンに制限が加わる他、少なくとも外装筐体の厚み分平面アンテナの位置は以金属層に近くなる。   As a form of compounding the exterior housing and the antenna, first, 1) a configuration in which a planar antenna made of a conductive layer is formed on the outer surface of the exterior housing, and 2) the planar antenna on the inner surface of the exterior housing. In the case of 1), damage from the planar antenna becomes a problem because it is easy to be subjected to external impacts, etc., while in case of 2), due to the uneven shape such as ribs on the inner surface of the outer casing. In addition to limiting the antenna pattern, at least the thickness of the planar antenna is as close to the metal layer as the outer casing.

結局、外装筺体本体を構成する樹脂成形品2と当該樹脂成形品2の外側表面を被覆する装飾フィルム3との間に、フィルム基材5に導電層からなる平面アンテナ4が形成されたアンテナフィルム6を挟装する形態が、最も実用性が高いと考えられる(図5参照)。なお、この形態をとる場合、樹脂成形品2には円形や方形に開口する給電用貫通孔2aを設けて平面アンテナ4の給電部4aを露出させる。
特開2001−136255号公報
Eventually, an antenna film in which a planar antenna 4 made of a conductive layer is formed on a film base 5 between a resin molded product 2 constituting the exterior casing body and a decorative film 3 covering the outer surface of the resin molded product 2. It is considered that the configuration in which 6 is sandwiched is most practical (see FIG. 5). In the case of taking this form, the resin molded product 2 is provided with a feed through hole 2a that opens in a circular or square shape so that the feed portion 4a of the planar antenna 4 is exposed.
JP 2001-136255 A

しかし、樹脂成形品2に給電用貫通孔2aを設けると、給電用貫通孔2aの部分では樹脂による支えが無くなり装飾フィルム3とアンテナフィルム6のみとなるため、これらのフィルムに変形等による外観不良が発生する。   However, if the power supply through hole 2a is provided in the resin molded product 2, the power supply through hole 2a is not supported by the resin, and only the decorative film 3 and the antenna film 6 are provided. Occurs.

また、装飾フィルム3とアンテナフィルム6とをラミネートしたものをインサートフィルム8として用い、金型内でインサート成形することによりアンテナ付き外装筺体1を製造した場合、給電用貫通孔2aを覆う部分のインサートフィルム8に膨れ9が発生し易く、やはり外観不良の問題があった(図6参照)。これは、冷却固化後の樹脂成形品2に発生する収縮応力7が、図7に示すように、樹脂成形品2の給電用貫通孔2aの中心に向かって一点集中するためである。   Moreover, when the exterior casing 1 with an antenna is manufactured by using the laminate of the decorative film 3 and the antenna film 6 as the insert film 8 and insert-molding in the mold, the insert in the portion covering the feed through hole 2a Swelling 9 was likely to occur in the film 8, and there was also a problem of poor appearance (see FIG. 6). This is because the shrinkage stress 7 generated in the resin molded product 2 after cooling and solidification is concentrated at one point toward the center of the power supply through hole 2a of the resin molded product 2 as shown in FIG.

したがって、本発明は、上記したような問題点を解消し、装飾フィルム表面の給電用貫通孔を覆う部分に外観不良を有しないアンテナ付き外装筺体を提供することを目的とする。   Accordingly, an object of the present invention is to solve the above-described problems and to provide an exterior casing with an antenna that does not have an appearance defect in a portion that covers a power supply through hole on the surface of a decorative film.

上記目的を達成するために、本発明を以下のように構成した。   In order to achieve the above object, the present invention is configured as follows.

すなわち、本発明は、外装筺体本体を構成する樹脂成形品と、前記樹脂成形品の外側表面を被覆する装飾フィルムと、フィルム基材に導電層からなる平面アンテナが形成され、かつ前記樹脂成形品と前記装飾フィルムの間に挟装されるアンテナフィルムとを備えたアンテナ付き外装筺体であって、さらに前記樹脂成形品が給電用貫通孔を有することにより前記平面アンテナの給電部を露出させており、かつ前記装飾フィルムと前記アンテナフィルムとの間に少なくとも前記給電用貫通孔を覆うように挟装される補強板を備えているように構成した。   That is, the present invention provides a resin molded product that constitutes an exterior casing body, a decorative film that covers the outer surface of the resin molded product, a planar antenna formed of a conductive layer on a film substrate, and the resin molded product. And an antenna film with an antenna film sandwiched between the decorative film, wherein the resin molded product has a feed through hole to expose the feed portion of the planar antenna. And a reinforcing plate sandwiched between the decorative film and the antenna film so as to cover at least the feed through hole.

また、上記構成において、前記補強板が液晶ポリマー又はこれを主構成層とするように構成した。   Moreover, in the said structure, it comprised so that the said reinforcement board might use a liquid crystal polymer or this as a main structural layer.

また、上記構成において、前記補強板がガラスクロス又はこれを主構成層とするように構成した。   Moreover, the said structure WHEREIN: The said reinforcement board was comprised so that it might become a glass cloth or this as a main structural layer.

また、上記構成において、前記補強板がガラス不織布又はこれを主構成層とするように構成した。   Moreover, in the said structure, it comprised so that the said reinforcement board might be a glass nonwoven fabric or this as a main structural layer.

また、上記各構成において、前記アンテナ付き外装筺体がインサート成形品であるように構成した。   Moreover, in each said structure, it comprised so that the said exterior housing | casing with an antenna might be an insert molded product.

上記構成によれば、本発明のアンテナ付き外装筺体は、前記装飾フィルムと前記アンテナフィルムとの間に少なくとも前記給電用貫通孔を覆うように挟装される補強板を備えているので、装飾フィルム及びアンテナフィルムの変形、膨れを抑え込むという効果を奏する。   According to the above configuration, the exterior casing with an antenna of the present invention includes the reinforcing plate sandwiched between the decorative film and the antenna film so as to cover at least the feed through hole. In addition, there is an effect of suppressing deformation and swelling of the antenna film.

以下、図面を参照しながら本発明の実施の形態について詳しく説明する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

図1は本発明に係るアンテナ付き外装筺体の一実施例を示す部分断面図である。このアンテナ付き外装筺体は、外装筺体本体を構成する樹脂成形品2と、前記樹脂成形品2の外側表面を被覆する装飾フィルム3と、フィルム基材5に導電層からなる平面アンテナ4が形成され、かつ前記樹脂成形品2と前記装飾フィルム3の間に挟装されるアンテナフィルム6とを備えたアンテナ付き外装筺体であって、さらに前記樹脂成形品2が給電用貫通孔2aを有することにより前記平面アンテナ4の給電部4aを露出させており、かつ前記装飾フィルム3と前記アンテナフィルム6との間に前記給電用貫通孔2aを覆うように挟装される補強板10を備えている。   FIG. 1 is a partial cross-sectional view showing an embodiment of an exterior housing with an antenna according to the present invention. In this exterior casing with an antenna, a resin molded product 2 constituting the exterior casing main body, a decorative film 3 covering the outer surface of the resin molded product 2, and a planar antenna 4 made of a conductive layer on the film base 5 are formed. And an antenna housing 6 with an antenna provided with the antenna film 6 sandwiched between the resin molded product 2 and the decorative film 3, and the resin molded product 2 further includes a feed through hole 2a. A feeding plate 4a of the planar antenna 4 is exposed, and a reinforcing plate 10 is provided between the decorative film 3 and the antenna film 6 so as to cover the feeding through hole 2a.

上記樹脂成形品2は、所望する外装筺体本体の形状に成形され、その材質は使用目的の機器類への要求や、成形方法により選択することができる。例えば、メタクリル樹脂(PMMA),アクリロニトリル−スチレン共重合体樹脂(AS)、アクリロニトリル−ブタジエン−スチレン共重合体樹脂(ABS)、セルロースプロピオネート樹脂、ポリカーボネート樹脂(PC)、ポリスチレン樹脂(PS)、ポリエステル樹脂、若しくは、ポリエチレン樹脂などがある。   The resin molded product 2 is molded into a desired shape of the outer casing body, and the material can be selected according to the requirements for the intended equipment and the molding method. For example, methacrylic resin (PMMA), acrylonitrile-styrene copolymer resin (AS), acrylonitrile-butadiene-styrene copolymer resin (ABS), cellulose propionate resin, polycarbonate resin (PC), polystyrene resin (PS), There are polyester resin or polyethylene resin.

上記装飾フィルム3は、上記樹脂成形品2を装飾するための層であり、通常、透明樹脂フィルムの少なくとも一方の面に加飾層を形成したものを用いる(図示せず)。透明樹脂フィルムの材質としては、例えば、例えば、ポリカーボネート系、ポリアミド系、ポリエーテルケトン系のエンジニアリングプラスチック、アクリル系、ポリエチレンテレフタレート系、ポリブチレンテレフタレート系などの樹脂フィルムなどを用いることができる。また、加飾層は、通常、着色インキ層であり、ウレタン樹脂、PC樹脂、ビニル樹脂、ポリエステル樹脂など、特にウレタン系樹脂、さらにはそのエラストマーをバインダーとし、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キを用いるとよい。着色インキ層の形成方法としては、オフセット印刷法、グラビア印刷法、スクリーン印刷法などの印刷法や、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を採用することができる。   The decorative film 3 is a layer for decorating the resin molded product 2, and usually uses a decorative resin layer formed on at least one surface of a transparent resin film (not shown). As a material for the transparent resin film, for example, polycarbonate, polyamide, polyether ketone engineering plastics, acrylic, polyethylene terephthalate, polybutylene terephthalate resin films, and the like can be used. In addition, the decorative layer is usually a colored ink layer, and urethane resin, PC resin, vinyl resin, polyester resin, etc., in particular urethane resin, and further, its elastomer is used as a binder, and pigments or dyes of appropriate colors are colored. It is recommended to use colored ink contained as an agent. As a method for forming the colored ink layer, a printing method such as an offset printing method, a gravure printing method or a screen printing method, or a coating method such as a gravure coating method, a roll coating method or a comma coating method can be employed.

なお、上記装飾フィルム3は、表現したい加飾に応じて加飾層を、上記樹脂成形品2の外側表面全体を装飾するように形成してもよいし、上記樹脂成形品2の外側表面の一部を装飾しないで透明窓部などを構成するように形成してもよい。また、上記装飾フィルム3は、上記樹脂成形品2の外側表面全体を装飾しない場合、着色インキ層を形成する代わりに、上記透明樹脂フィルム中に適切な色の顔料または染料を着色剤として含有させたものを用いることもできる。   In addition, the said decorative film 3 may form a decoration layer so that the whole outer surface of the said resin molded product 2 may be decorated according to the decoration to express, or the outer surface of the said resin molded product 2 You may form so that a transparent window part etc. may be comprised without decorating a part. Further, in the case where the decorative film 3 does not decorate the entire outer surface of the resin molded product 2, instead of forming a colored ink layer, an appropriate color pigment or dye is contained as a colorant in the transparent resin film. Can also be used.

また、加飾層は、透明樹脂フィルムのいずれの面にも形成できるが、樹脂成形品2側に形成すると、指などが直接加飾層に触れることがないため、磨耗から保護される。   Moreover, although a decoration layer can be formed in any surface of a transparent resin film, when it forms in the resin molded product 2 side, since a finger | toe etc. do not touch a decoration layer directly, it protects from abrasion.

上記アンテナフィルム6の上記フィルム基材5は、平面アンテナ4の支持基材として可能なものなら何でもよく、例えば、装飾フィルム3の透明樹脂フィルム同様に、ポリカーボネート系、ポリアミド系、ポリエーテルケトン系のエンジニアリングプラスチック、アクリル系、ポリエチレンテレフタレート系、ポリブチレンテレフタレート系などの樹脂フィルムなどを用いることができる。   The film base 5 of the antenna film 6 may be anything as long as it can be used as a support base for the planar antenna 4. For example, as with the transparent resin film of the decorative film 3, polycarbonate, polyamide, and polyetherketone bases may be used. Engineering plastic, acrylic resin, polyethylene terephthalate resin, polybutylene terephthalate resin film, or the like can be used.

上記アンテナフィルム6の上記平面アンテナ4を構成する導電層は、アンテナ機能を持たせられる導電性物質からなるものであれば特に制限はない。導電性を有する素材は、例えば、金属であれば金、白金、銀、銅、アルミニウム、ニッケル、亜鉛、鉛等がある。また導電性高分子等の導電性を有する高分子化合物も可能である。またそれらからなる導電層の形態は、箔、ペースト、メッキ等によるものが可能で、上記フィルム基材5に形成される。   The conductive layer constituting the planar antenna 4 of the antenna film 6 is not particularly limited as long as the conductive layer is made of a conductive material having an antenna function. Examples of the conductive material include gold, platinum, silver, copper, aluminum, nickel, zinc, lead, and the like in the case of metal. Further, a polymer compound having conductivity such as a conductive polymer is also possible. Moreover, the form of the conductive layer made of them can be foil, paste, plating or the like, and is formed on the film base 5.

上記平面アンテナ4のパターンは、周波数帯、用途により適宜選択される。例えば、無線LAN、Bluetooth、RFID、GPS、ETC、通信等で用いられるパターンが選択可能である。具体例としては、スパイラルアンテナ41(図2参照。なお、図1は図2のAA線断面を示す図である。)やダイポールアンテナ42(図3参照)などのパターンである。また、平面アンテナ4のパターニングは、導電層がペーストによるものの場合にはスクリーン印刷法、また導電層が箔、メッキ等によるものの場合には印刷レジスト、感光性レジストを用いたエッチング法等、一般的な方法を適用することができる。   The pattern of the planar antenna 4 is appropriately selected depending on the frequency band and application. For example, a pattern used in wireless LAN, Bluetooth, RFID, GPS, ETC, communication, or the like can be selected. As a specific example, there are patterns such as a spiral antenna 41 (see FIG. 2; FIG. 1 is a diagram showing a cross section taken along line AA in FIG. 2), a dipole antenna 42 (see FIG. 3), and the like. The planar antenna 4 is generally patterned by a screen printing method when the conductive layer is made of paste, and a printing resist or an etching method using a photosensitive resist when the conductive layer is made of foil, plating, or the like. Various methods can be applied.

本発明は、携帯機器の外装筐体内に平面アンテナ4を埋設し、外装筺体本体を構成する樹脂成形品2に貫通孔を設けて外装筐体の内側から給電する構造とする場合に、樹脂成形品2による支えが無くても装飾フィルム3及びアンテナフィルム6の給電用貫通孔2aを覆う部分に発生する変形、膨れ対策を検討する中でなされたものであり、具体的には、本願発明者等は、装飾フィルム3とアンテナフィルム6とを貼り合わせる時、その間の少なくとも前記給電用貫通孔を覆う部分に補強板10を挿入することにより、装飾フィルム3及びアンテナフィルム6の変形、膨れを抑え込むことを見出したのである。   In the case where the planar antenna 4 is embedded in the exterior casing of the portable device and the resin molded product 2 constituting the exterior casing main body is provided with a through hole to supply power from the inside of the exterior casing, the resin molding is performed. The present invention has been made in consideration of measures for deformation and swelling occurring in the portion covering the feeding through hole 2a of the decorative film 3 and the antenna film 6 even when there is no support by the product 2. And the like, when the decorative film 3 and the antenna film 6 are bonded together, the reinforcing plate 10 is inserted into at least a portion covering the feeding through-hole between them, thereby suppressing deformation and swelling of the decorative film 3 and the antenna film 6. I found out.

補強板10の面積は少なくとも樹脂成形品2の給電用貫通孔2aが全て含まれるようにする必要がある。補強板としては、樹脂成形品2の給電用貫通孔2aを覆う装飾フィルム3及びアンテナフィルム6の変形、膨れを抑え込むことができるように、剛性や熱収縮率の小さなものがよく、より好ましくは液晶ポリマーフィルム、ガラスクロス、ガラス不織布等、又はこれらを主構成層とするポリイミドフィルム等との積層体である。装飾フィルム3、アンテナフィルム6、補強板10はそれぞれ透明接着剤を介して貼り合わせることが可能である(図1では省略)。透明接着剤はホットメルト系のものが好ましく、使用するフィルムの種類により選択する。   The area of the reinforcing plate 10 needs to include at least all the power supply through holes 2a of the resin molded product 2. As the reinforcing plate, one having a small rigidity and thermal contraction rate is preferable so that the decoration film 3 and the antenna film 6 covering the power feeding through hole 2a of the resin molded product 2 and the deformation and swelling can be suppressed, and more preferably. It is a laminated body with a liquid crystal polymer film, a glass cloth, a glass nonwoven fabric or the like, or a polyimide film or the like having these as a main constituent layer. The decorative film 3, the antenna film 6, and the reinforcing plate 10 can be bonded together via a transparent adhesive (not shown in FIG. 1). The transparent adhesive is preferably a hot-melt adhesive, and is selected according to the type of film used.

本発明のアンテナ付き外装筺体1は、インサート成形によるインサート成形品とするのが製造上、安定したものが得られる。上記樹脂成形品2と上記装飾フィルム3の間に上記補強板10、上記アンテナフィルム6が挟装された上記インサート成形品を製造するには、以下のようにする。   As the outer casing 1 with an antenna of the present invention, an insert molded product obtained by insert molding is stable in manufacture. In order to manufacture the insert molded product in which the reinforcing plate 10 and the antenna film 6 are sandwiched between the resin molded product 2 and the decorative film 3, the following process is performed.

まず、上記装飾フィルム3の一方の面(加飾層が透明樹脂フィルムの片面のみに用いられていらう場合には当該加飾層が形成されている側の面とするのが好ましい)と、アンテナフィルム6の給電部4aを有しない側の面とを、間の少なくとも給電用貫通孔2aを覆う部分には補強版10を介して、透明接着剤(図1では省略)により貼り合わせることにより、インサートフィルム8とする。このとき、アンテナフィルム6の平面アンテナ4が不透明な場合、上記装飾フィルム3によって平面アンテナ4が隠蔽されるような位置にアンテナフィルム6を貼り合わせる。   First, one surface of the decorative film 3 (when the decorative layer is used only on one surface of the transparent resin film, the surface on which the decorative layer is formed is preferable), and an antenna By sticking the surface of the film 6 on the side not having the power feeding part 4a to the portion covering at least the power feeding through hole 2a with a transparent adhesive (not shown in FIG. 1) via the reinforcing plate 10, The insert film 8 is used. At this time, when the planar antenna 4 of the antenna film 6 is opaque, the antenna film 6 is bonded to a position where the planar antenna 4 is concealed by the decorative film 3.

次に、上記インサートフィルム8をフィルム成形用金型内に装着して、外装筺体本体の外側表面形状に沿うように予備成形する。   Next, the insert film 8 is mounted in a film molding die and preformed so as to follow the outer surface shape of the exterior casing body.

次いで、可動型と固定型とからなる成形用金型内に予備成形されたインサートフィルム8を送り込む。この際、毎葉のインサートフィルム8を1枚づつ送り込んでもよいし、長尺のインサートフィルム8の必要部分を間欠的に送り込んでもよい。成形用金型を閉じた後、固定型に設けたゲートより溶融樹脂をキャビティ内に射出充満させ、外装筺体本体を構成する樹脂成形品2を形成するのと同時にその外側表面にインサートフィルム8を接着させる。樹脂成形品2を冷却固化した後、成形用金型を開いて樹脂成形品2を取り出し、必要に応じて樹脂成形品2周縁のインサートフィルム8の不要部分を除去し、アンテナ付き外装筺体が完成する。   Next, the preformed insert film 8 is fed into a molding die composed of a movable mold and a fixed mold. At this time, each insert film 8 may be fed one by one, or a necessary portion of the long insert film 8 may be intermittently fed. After closing the molding die, molten resin is injected and filled into the cavity from the gate provided in the fixed die, and simultaneously with the formation of the resin molded product 2 constituting the exterior casing body, the insert film 8 is placed on the outer surface thereof. Adhere. After the resin molded product 2 is cooled and solidified, the molding die is opened, the resin molded product 2 is taken out, and unnecessary portions of the insert film 8 at the periphery of the resin molded product 2 are removed as necessary, thereby completing the exterior casing with an antenna. To do.

以上、代表的な実施形態について説明したが、本発明のアンテナ付き外装筺体1は、これに限定されるものではない。例えば、インサート成形によらず、あらかじめ樹脂成形品2を成形した後、その表面に上記インサートフィルム8と同様のものを貼り合わせてもよい。また。上記アンテナ付き外装筺体1の外側最表面にはハードコート処理を施してもよい。ハードコート処理を施した場合、装飾フィルム3において加飾層を透明樹脂フィルムの外側表面となる側に形成しても、ハードコート処理層によって、加飾層が指などによる磨耗から十分に保護される。ハードコート処理方法としては、アクリル樹脂、シリコン樹脂、UV硬化樹脂などのハードコート材料を塗布したり、ハードコートフィルムを貼り付けたりする等がある。   As mentioned above, although typical embodiment was described, the exterior housing | casing 1 with an antenna of this invention is not limited to this. For example, after molding the resin molded product 2 in advance, regardless of insert molding, the same material as the insert film 8 may be bonded to the surface. Also. A hard coat process may be applied to the outermost surface of the outer casing 1 with an antenna. When the hard coat treatment is applied, even if the decorative layer is formed on the side that becomes the outer surface of the transparent resin film in the decorative film 3, the hard coat treatment layer sufficiently protects the decorative layer from abrasion due to fingers or the like. The Examples of the hard coat treatment method include applying a hard coat material such as an acrylic resin, a silicon resin, and a UV curable resin, or attaching a hard coat film.

また、アンテナフィルム6において、平面アンテナ4は、給電部4aが樹脂成形品2側となる面に設けられていれば、給電部4a以外はフィルム基材5の両面、あるいは装飾フィルム3側に設けられていても構わない。その場合、フィルム基材5の両面間の導通はスルーホール等、一般的な方法を適用することができる。   In the antenna film 6, the planar antenna 4 is provided on both surfaces of the film base 5 or on the decorative film 3 side except for the power supply portion 4 a if the power supply portion 4 a is provided on the surface on the resin molded product 2 side. It does not matter. In that case, a general method such as through-hole can be applied to the conduction between both surfaces of the film substrate 5.

また、アンテナフィルム6においてフィルム基材5の樹脂成形品2側に平面アンテナ4が形成されている場合、樹脂成形品2側の平面アンテナ4が給電部4aを除いてカバー層によって被覆されていてもよい。このようにカバー層で平面アンテナ4を被覆することにより、インサート成形中の流動する溶融樹脂から保護することができる。   When the planar antenna 4 is formed on the resin film 2 side of the film base 5 in the antenna film 6, the planar antenna 4 on the resin molded product 2 side is covered with a cover layer except for the feeding portion 4a. Also good. By covering the planar antenna 4 with the cover layer in this way, it is possible to protect from the molten resin flowing during insert molding.

本発明は、添付図面を参照しながら好ましい実施形態に関連して充分に記載されているが、この技術に熟練した人々にとっては種々の変形は修正は明白である。そのような変形や修正は、添付した請求の範囲による本発明の範囲から外れない限りにおいて、その中に含まれると理解されるべきである。   Although the present invention has been fully described in connection with preferred embodiments with reference to the accompanying drawings, various modifications will be apparent to those skilled in the art. Such changes and modifications are to be understood as being included therein, so long as they do not depart from the scope of the present invention according to the appended claims.

(実施例1)
まず、50μm厚のPETフィルムをフィルム基材5とし、その片面に導電層として18μm厚の銅箔を形成した後、該銅箔をフォトエッチング法により5cm×7cmのスパイラルアンテナの形状にパターニングにして平面アンテナ4を形成し、アンテナフィルム6を得た。また、50μm厚の透明アクリルフィルムの片面にグラビア印刷法にて加飾層を形成して装飾フィルム3を得た。さらに補強板10として液晶ポリマーフィルムを用意した。次に、装飾フィルム3の加飾層側に補強板10、アンテナフィルム6を透明接着剤にて順次貼り合わせてインサートフィルム8とし、当該インサートフィルム8を外装筺体本体の外側表面形状に沿って予備成形した。次いで、樹脂成形品2を給電用貫通孔2aを有する1mm厚の外装筺体本体形状に成形可能な成形用金型を用い、インサートフィルムを挿入し、型閉め後、キャビティ内にABS樹脂を射出することによりインサート成形品を得た。冷却固化後、金型内よりインサート成形品を取出し、樹脂成形品2周縁のインサートフィルム8の不要部分を除去してアンテナ付き外装筺体を得た。
Example 1
First, a PET film having a thickness of 50 μm is used as a film substrate 5, and a copper foil having a thickness of 18 μm is formed as a conductive layer on one side, and then the copper foil is patterned into a spiral antenna shape of 5 cm × 7 cm by a photoetching method. A planar antenna 4 was formed to obtain an antenna film 6. In addition, a decorative layer was formed on one side of a 50 μm thick transparent acrylic film by a gravure printing method to obtain a decorative film 3. Further, a liquid crystal polymer film was prepared as the reinforcing plate 10. Next, the reinforcing plate 10 and the antenna film 6 are sequentially bonded to the decorative layer side of the decorative film 3 with a transparent adhesive to form the insert film 8, and the insert film 8 is preliminarily arranged along the outer surface shape of the exterior casing body. Molded. Next, using a molding die capable of molding the resin molded product 2 into a 1 mm-thick outer casing body shape having a feed through hole 2a, an insert film is inserted, the mold is closed, and then ABS resin is injected into the cavity. Thus, an insert molded product was obtained. After cooling and solidifying, an insert molded product was taken out from the mold, and unnecessary portions of the insert film 8 on the periphery of the resin molded product 2 were removed to obtain an exterior casing with an antenna.

このようにして製造されたアンテナ付き外装筺体は、外装筺体本体を構成する樹脂成形品2と、前記樹脂成形品2の外側表面を被覆する装飾フィルム3と、フィルム基材5に導電層からなる平面アンテナ4が形成され、かつ前記樹脂成形品2と前記装飾フィルム3の間に挟装されるアンテナフィルム6とを備えたインサート成形品であって、さらに前記樹脂成形品2が給電用貫通孔2aを有することにより前記平面アンテナ4の給電部4aを露出させており、かつ前記装飾フィルム3と前記アンテナフィルム6との間に前記給電用貫通孔2aを覆うように挟装される補強板10を備えている。樹脂成形品2の給電用貫通孔2aに対応する箇所を確認したところ、装飾フィルム3の外側表面に変形による膨れはなかった。また、いくら使用しても、樹脂成形品2の給電用貫通孔2aに対応する箇所に変形が生じなかった。   The outer casing with an antenna manufactured as described above is composed of a resin molded product 2 constituting the outer casing main body, a decorative film 3 covering the outer surface of the resin molded product 2, and a conductive layer on the film base 5. A planar antenna 4 is formed and an insert molded product including an antenna film 6 sandwiched between the resin molded product 2 and the decorative film 3, and the resin molded product 2 further includes a feed through hole. The reinforcing plate 10 that exposes the feeding portion 4a of the planar antenna 4 by having 2a and is sandwiched between the decorative film 3 and the antenna film 6 so as to cover the feeding through-hole 2a. It has. When a portion corresponding to the power feeding through hole 2 a of the resin molded product 2 was confirmed, the outer surface of the decorative film 3 was not swollen due to deformation. Moreover, no matter how much it was used, no deformation occurred in the portion corresponding to the power feed through hole 2a of the resin molded product 2.

(実施例2)
まず、50μm厚のPETフィルムをフィルム基材5とし、その片面に導電層として18μm厚の銅箔を形成した後、該銅箔を印刷レジストによるエッチング法により5cm×7cmのスパイラルアンテナの形状にパターニングにして平面アンテナ4を形成し、アンテナフィルム6を得た。また、50μm厚の透明ポリカーボネートフィルムの片面にグラビア印刷法にて加飾層を形成して装飾フィルム3を得た。さらに補強板10として
ポリイミドとガラスクロスの積層体を用意した。次に、装飾フィルム3の加飾層側に補強板10、アンテナフィルム6を透明接着剤にて順次貼り合わせてインサートフィルム8とし、当該インサートフィルム8を外装筺体本体の外側表面形状に沿って予備成形した。次いで、樹脂成形品2を給電用貫通孔2aを有する1mm厚の外装筺体本体形状に成形可能な成形用金型を用い、インサートフィルムを挿入し、型閉め後、キャビティ内にABS樹脂を射出することによりインサート成形品を得た。冷却固化後、金型内よりインサート成形品を取出し、樹脂成形品2周縁のインサートフィルム8の不要部分を除去してアンテナ付き外装筺体を得た。
(Example 2)
First, a PET film having a thickness of 50 μm is used as a film substrate 5, and a copper foil having a thickness of 18 μm is formed as a conductive layer on one side, and then the copper foil is patterned into a 5 cm × 7 cm spiral antenna by an etching method using a printing resist. Thus, a planar antenna 4 was formed, and an antenna film 6 was obtained. In addition, a decorative layer was formed on one side of a transparent polycarbonate film having a thickness of 50 μm by a gravure printing method to obtain a decorative film 3. Further, a laminate of polyimide and glass cloth was prepared as the reinforcing plate 10. Next, the reinforcing plate 10 and the antenna film 6 are sequentially bonded to the decorative layer side of the decorative film 3 with a transparent adhesive to form an insert film 8, and the insert film 8 is preliminarily aligned along the outer surface shape of the exterior casing body. Molded. Next, using a molding die capable of molding the resin molded product 2 into a 1 mm-thick exterior casing body shape having a feed through hole 2a, an insert film is inserted, the mold is closed, and then ABS resin is injected into the cavity. Thus, an insert molded product was obtained. After cooling and solidification, an insert molded product was taken out from the mold, and unnecessary portions of the insert film 8 on the periphery of the resin molded product 2 were removed to obtain an exterior casing with an antenna.

このようにして製造されたアンテナ付き外装筺体は、外装筺体本体を構成する樹脂成形品2と、前記樹脂成形品2の外側表面を被覆する装飾フィルム3と、フィルム基材5に導電層からなる平面アンテナ4が形成され、かつ前記樹脂成形品2と前記装飾フィルム3の間に挟装されるアンテナフィルム6とを備えたインサート成形品であって、さらに前記樹脂成形品2が給電用貫通孔2aを有することにより前記平面アンテナ4の給電部4aを露出させており、かつ前記装飾フィルム3と前記アンテナフィルム6との間に前記給電用貫通孔2aを覆うように挟装される補強板10を備えている。樹脂成形品2の給電用貫通孔2aに対応する箇所を確認したところ、装飾フィルム3の外側表面に変形による膨れはなかった。また、いくら使用しても、樹脂成形品2の給電用貫通孔2aに対応する箇所に変形が生じなかった。   The outer casing with an antenna manufactured as described above is composed of a resin molded product 2 constituting the outer casing main body, a decorative film 3 covering the outer surface of the resin molded product 2, and a conductive layer on the film base 5. A planar antenna 4 is formed and an insert molded product including an antenna film 6 sandwiched between the resin molded product 2 and the decorative film 3, and the resin molded product 2 further includes a feed through hole. The reinforcing plate 10 that exposes the feeding portion 4a of the planar antenna 4 by having 2a and is sandwiched between the decorative film 3 and the antenna film 6 so as to cover the feeding through-hole 2a. It has. When a portion corresponding to the power feeding through hole 2 a of the resin molded product 2 was confirmed, the outer surface of the decorative film 3 was not swollen due to deformation. Moreover, no matter how much it was used, no deformation occurred in the portion corresponding to the power feed through hole 2a of the resin molded product 2.

(実施例3)
まず、25μm厚のポリイミドフィルムをフィルム基材5とし、その片面に導電層として18μm厚の銅箔を形成した後、該銅箔をフ印刷レジストによるエッチング法によりダイポールアンテナの形状にパターニングにして平面アンテナ4を形成し、アンテナフィルム6を得た。また、50μm厚の透明アクリルフィルムの片面にグラビア印刷法にて加飾層を形成して装飾フィルム3を得た。さらに補強板10としてポリイミドとガラス不織布の積層体を用意した。次に、装飾フィルム3の加飾層側に補強板10、アンテナフィルム6を透明接着剤にて順次貼り合わせてインサートフィルム8とし、当該インサートフィルム8を外装筺体本体の外側表面形状に沿って予備成形した。次いで、樹脂成形品2を給電用貫通孔2aを有する1mm厚の外装筺体本体形状に成形可能な成形用金型を用い、インサートフィルムを挿入し、型閉め後、キャビティ内にポリカーボネイト樹脂を射出することによりインサート成形品を得た。冷却固化後、金型内よりインサート成形品を取出し、樹脂成形品2周縁のインサートフィルム8の不要部分を除去してアンテナ付き外装筺体を得た。
(Example 3)
First, a polyimide film having a thickness of 25 μm is used as a film substrate 5, and a copper foil having a thickness of 18 μm is formed as a conductive layer on one side, and then the copper foil is patterned into a dipole antenna shape by an etching method using a printing resist. The antenna 4 was formed and the antenna film 6 was obtained. In addition, a decorative layer was formed on one side of a 50 μm thick transparent acrylic film by a gravure printing method to obtain a decorative film 3. Further, a laminate of polyimide and glass nonwoven fabric was prepared as the reinforcing plate 10. Next, the reinforcing plate 10 and the antenna film 6 are sequentially bonded to the decorative layer side of the decorative film 3 with a transparent adhesive to form the insert film 8, and the insert film 8 is preliminarily arranged along the outer surface shape of the exterior casing body. Molded. Next, using a molding die capable of molding the resin molded product 2 into a 1 mm-thick exterior casing body shape having a feed through hole 2a, an insert film is inserted, the mold is closed, and then a polycarbonate resin is injected into the cavity. Thus, an insert molded product was obtained. After cooling and solidifying, an insert molded product was taken out from the mold, and unnecessary portions of the insert film 8 on the periphery of the resin molded product 2 were removed to obtain an exterior casing with an antenna.

このようにして製造されたアンテナ付き外装筺体は、外装筺体本体を構成する樹脂成形品2と、前記樹脂成形品2の外側表面を被覆する装飾フィルム3と、フィルム基材5に導電層からなる平面アンテナ4が形成され、かつ前記樹脂成形品2と前記装飾フィルム3の間に挟装されるアンテナフィルム6とを備えたインサート成形品であって、さらに前記樹脂成形品2が給電用貫通孔2aを有することにより前記平面アンテナ4の給電部4aを露出させており、かつ前記装飾フィルム3と前記アンテナフィルム6との間に前記給電用貫通孔2aを覆うように挟装される補強板10を備えている。樹脂成形品2の給電用貫通孔2aに対応する箇所を確認したところ、装飾フィルム3の外側表面に変形による膨れはなかった。また、いくら使用しても、樹脂成形品2の給電用貫通孔2aに対応する箇所に変形が生じなかった。   The outer casing with an antenna manufactured as described above is composed of a resin molded product 2 constituting the outer casing main body, a decorative film 3 covering the outer surface of the resin molded product 2, and a conductive layer on the film base 5. A planar antenna 4 is formed and an insert molded product including an antenna film 6 sandwiched between the resin molded product 2 and the decorative film 3, and the resin molded product 2 further includes a feed through hole. The reinforcing plate 10 that exposes the feeding portion 4a of the planar antenna 4 by having 2a and is sandwiched between the decorative film 3 and the antenna film 6 so as to cover the feeding through-hole 2a. It has. When a portion corresponding to the power feeding through hole 2 a of the resin molded product 2 was confirmed, the outer surface of the decorative film 3 was not swollen due to deformation. Moreover, no matter how much it was used, no deformation occurred in the portion corresponding to the power feed through hole 2a of the resin molded product 2.

(比較例1〜3)
比較例1〜3のアンテナ付き外装筺体は、補強板10を省略したこと以外、上記実施例1〜3と同様とした。樹脂成形品2の給電用貫通孔2aに対応する箇所を確認したところ、いずれも装飾フィルム3の外側表面に膨れを生じた。また、使用とともに樹脂成形品2の給電用貫通孔2aに対応する箇所に変形が生じた。
(Comparative Examples 1-3)
The outer casings with antennas of Comparative Examples 1 to 3 were the same as Examples 1 to 3 except that the reinforcing plate 10 was omitted. When the part corresponding to the through-hole 2a for electric power feeding of the resin molded product 2 was confirmed, all produced the swelling on the outer surface of the decorative film 3. Moreover, the location corresponding to the through-hole 2a for electric power feeding of the resin molded product 2 changed with use.

本発明に係るアンテナ付き外装筺体の一実施例を示す部分断面図である。It is a fragmentary sectional view showing one example of an exterior case with an antenna concerning the present invention. 本発明に係るアンテナ付き外装筺体におけるアンテナパターンの一実施例を示す平面図である。It is a top view which shows one Example of the antenna pattern in the exterior housing with an antenna which concerns on this invention. 本発明に係るアンテナ付き外装筺体におけるアンテナパターンの一実施例を示す平面図である。It is a top view which shows one Example of the antenna pattern in the exterior housing with an antenna which concerns on this invention. アンテナ付き外装筺体の一例を示す携帯電話機の分解斜視図である。It is a disassembled perspective view of the mobile telephone which shows an example of the exterior housing | casing with an antenna. 従来技術に係る樹脂成形品と装飾フィルムとの間にアンテナフィルムを挟装する形態を説明するアンテナ付き外装筺体の部分断面図である。It is a fragmentary sectional view of the exterior housing with an antenna explaining the form which sandwiches an antenna film between the resin molded product and decoration film concerning a prior art. インサート成形によるアンテナ付き外装筺体の外観不良を示す部分断面図である。It is a fragmentary sectional view which shows the external appearance defect of the exterior housing | casing with an antenna by insert molding. 図6の外観不良が発生する原因を説明する図である。It is a figure explaining the cause which the external appearance defect of FIG. 6 generate | occur | produces.

符号の説明Explanation of symbols

1 アンテナ付き外装筺体
2 樹脂成形品
2a 給電用貫通孔
3 装飾フィルム
4 平面アンテナ
4a 給電部
5 フィルム基材
6 アンテナフィルム
7 収縮応力
8 インサートフィルム
9 膨れ
10 補強板
DESCRIPTION OF SYMBOLS 1 Exterior housing | casing with an antenna 2 Resin molding 2a Feeding through-hole 3 Decoration film 4 Planar antenna 4a Feeding part 5 Film base material 6 Antenna film 7 Shrinkage stress 8 Insert film 9 Swelling 10 Reinforcing plate

Claims (5)

外装筺体本体を構成する樹脂成形品と、前記樹脂成形品の外側表面を被覆する装飾フィルムと、フィルム基材に導電層からなる平面アンテナが形成され、かつ前記樹脂成形品と前記装飾フィルムの間に挟装されるアンテナフィルムとを備えたアンテナ付き外装筺体であって、さらに前記樹脂成形品が給電用貫通孔を有することにより前記平面アンテナの給電部を露出させており、かつ前記装飾フィルムと前記アンテナフィルムとの間に少なくとも前記給電用貫通孔を覆うように挟装される補強板を備えたことを特徴とするアンテナ付き外装筺体。 A resin molded product constituting the outer casing main body, a decorative film covering the outer surface of the resin molded product, a planar antenna formed of a conductive layer on the film base, and between the resin molded product and the decorative film An antenna housing with an antenna film sandwiched between the planar antenna, the resin molded article having a feed through hole, and exposing the feeding portion of the planar antenna; and the decorative film An exterior casing with an antenna, comprising a reinforcing plate sandwiched between the antenna film so as to cover at least the feed through hole. 前記補強板が液晶ポリマー又はこれを主構成層とする請求項1記載のアンテナ付き外装筺体。   The exterior casing with an antenna according to claim 1, wherein the reinforcing plate includes a liquid crystal polymer or a main constituent layer thereof. 前記補強板がガラスクロス又はこれを主構成層とする請求項1記載のアンテナ付き外装筺体。   The exterior casing with an antenna according to claim 1, wherein the reinforcing plate is a glass cloth or the main constituent layer. 前記補強板がガラス不織布又はこれを主構成層とする請求項1記載のアンテナ付き外装筺体。   The exterior casing with an antenna according to claim 1, wherein the reinforcing plate is a glass nonwoven fabric or a main constituent layer thereof. 前記アンテナ付き外装筺体がインサート成形品である請求項1〜4のいずれかに記載のアンテナ付き外装筺体。   The exterior casing with an antenna according to any one of claims 1 to 4, wherein the exterior casing with an antenna is an insert-molded product.
JP2006041724A 2006-02-18 2006-02-18 Exterior casing with antenna Withdrawn JP2007221609A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006041724A JP2007221609A (en) 2006-02-18 2006-02-18 Exterior casing with antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006041724A JP2007221609A (en) 2006-02-18 2006-02-18 Exterior casing with antenna

Publications (1)

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Country Link
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009104635A1 (en) * 2008-02-19 2009-08-27 日本写真印刷株式会社 Mesh sheet and housing for electronic devices
KR101133053B1 (en) 2010-06-25 2012-04-04 박대선 A mobile phone case within antenna and manufacturing method thereof
CN108376829A (en) * 2017-01-30 2018-08-07 英飞凌科技股份有限公司 Radio-frequency devices encapsulation and forming method thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009104635A1 (en) * 2008-02-19 2009-08-27 日本写真印刷株式会社 Mesh sheet and housing for electronic devices
US8003900B2 (en) 2008-02-19 2011-08-23 Nissha Printing Co., Ltd. Mesh sheet and housing for electronic devices
CN103252940A (en) * 2008-02-19 2013-08-21 日本写真印刷株式会社 Mesh sheet and housing for electronic devices
CN103252940B (en) * 2008-02-19 2015-04-01 日本写真印刷株式会社 Mesh sheetfor electronic devices
KR101133053B1 (en) 2010-06-25 2012-04-04 박대선 A mobile phone case within antenna and manufacturing method thereof
CN108376829A (en) * 2017-01-30 2018-08-07 英飞凌科技股份有限公司 Radio-frequency devices encapsulation and forming method thereof
CN108376829B (en) * 2017-01-30 2020-10-30 英飞凌科技股份有限公司 Radio frequency device package and method of forming the same

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