KR101405881B1 - Case for mobile device having integrally forming antenna - Google Patents

Abstract

The present invention relates to an antenna-integrated mobile device case, wherein an antenna-integrated mobile device case according to the present invention comprises at least two layers of a non-conductive fiber raw piece, at least one antenna located in the original piece, And a molded resin part which is fixed to a predetermined position of the fabric piece and penetrates into the inside and the outside of the fabric piece and is integrated with the original piece and the antenna. The antenna integrated type mobile device case according to the present invention has a texture of black and white or color fabric, At least one antenna having a high degree of design freedom because of the freedom of implementation of the pattern and capable of having a two-dimensional and / or three-dimensional shape can be selectively inserted into the surface layer, middle layer portion or low layer portion of black- It can be easily positioned at the position, and despite the thinness of the case It is possible to minimize deterioration of radio frequency (RF) characteristics of a mobile device according to need as well as to have sufficiently high impact resistance and strength, light weight, and excellent economical efficiency.

Description

{CASE FOR MOBILE DEVICE HAVING INTEGRALY FORMING ANTENNA}

The present invention relates to an antenna-integrated mobile device case, and more particularly, to an antenna-integrated mobile device case, and more particularly, to an antenna-integrated mobile device case, and more particularly to a case of a non- Dimensional or three-dimensional antenna, which has been processed into specific shapes and dimensions, may be placed on a lower layer or an intermediate layer, and then resin-transferred molding (RTM) or resin- The present invention relates to a mobile device case in which an antenna is integrally formed with a case by insert molding using an insert molding method. According to the present invention, (RF) characteristic by using a non-conductive pigment or an antistatic agent in the above-mentioned circular piece, if necessary, And it is possible to obtain a high gloss without requiring a post-treatment process such as a separate buffing (polishing) process for obtaining high gloss, and it is possible to provide a thinner and satisfactory impact resistance, and, if necessary, .

Mobile devices such as smart phones and tablet PCs have excellent mobility, processing capability, and control characteristics, so that they can utilize various video objects and applications in any attitude anytime and anywhere.

Most of today's mobile devices are equipped with a wireless information communication function such as a built-in wireless LAN connection function in addition to the above advantages. However, in order to overcome the weak point of small screen and to provide stable wireless Securing network capability is becoming an important issue.

Therefore, in order to overcome the small screen weakness of such a mobile device, a tablet PC to which a flexible display is applied, a smart phone having a beam projector function, or a new concept device such as an HMD (Head Mount Display) Is emerging.

However, it is necessary to advance and transmit a larger amount of data in real time as the screen becomes larger, and it is necessary to transmit and receive terrestrial DMB (Digital Multimedia Broadcasting) broadcasting One of the most important parts that enable these functions is an antenna in watching or uploading large amount of information such as a video file or the like.

Conventionally, an antenna used in a mobile device has been developed from an external type such as a rod type antenna or a helical type antenna to a built-in type in which it is disposed in a terminal in response to the tendency toward compactness of a mobile device in terms of convenience and design, There is a problem in that the built-in type is advantageous in portability and designability, but it is an obstacle to miniaturization and there is a fear that the reception sensitivity may be deteriorated.

Therefore, in order to solve the problems of the related art, various attempts have been actively made to integrate the antenna with the case of the mobile device, and typical examples thereof are as follows.

Korean Unexamined Patent Application Publication No. 10-2006-0065323 (published on June 14, 2006) discloses an internal antenna which is relatively advantageous for securing a mounting space of other components inside a terminal by embedding an antenna mounted inside the terminal body And a mobile communication terminal.

However, the above-mentioned prior art only mentions that the antenna is buried in the case, but does not mention the specific means at all.

Korean Patent No. 0945117 (registered on Feb. 23, 2010) discloses a semiconductor device including a radiator having an antenna pattern portion and a connection portion, a radiator frame formed by molding the radiator and allowing the antenna pattern portion to be embedded in the case, And a contact surface extending portion formed by a folding blade, a hole, an emboss, a tapered bent portion, or the like for holding the antenna pattern frame so as not to be lifted from the radiator frame, and a method of manufacturing the antenna pattern frame.

However, in the above-mentioned prior art, since the guide pin and the contact pin hole which are in contact with the guide pin and the contact pin of the mold are formed in the radiator so that the radiator does not fluctuate in the mold during molding of the radiator frame, Holes and contact pin hole marks remain. The above-mentioned radiator frame is integrated with the case frame by being simply bonded to the bottom surface of the case frame or double-injected again by insert molding to fill up the pin hole mark on the upper surface.

Korean Patent Laid-Open Publication No. 2009-0019509 (published on February 25, 2009) and Korean Patent Application Publication No. 2009-0066257 (published on June 23, 2009) disclose a radiator having a radiating portion which is in close contact with a surface of a case front surface and a terminal portion extending therefrom An antenna integrated type case for enhancing the reliability of an electrically connected state comprising a radiator, an inner connecting piece, and a molding case portion covering the radiator and the inner connecting piece together and including the exposed vertical ribs, and a manufacturing method thereof .

The above-mentioned prior art does not adopt a pin and a hole structure for fixing the radiator and / or the radiator frame without positional fluctuation in the above-mentioned prior art, but a protective film is adhered inside the upper mold and a radiator A plurality of recessed grooves are formed on the inner side of the lower mold and then the elastic inner connecting piece having a specific crimping structure is placed in the lower mold to fix the radiator in the mold. Not only the complexity of the mold, but also the process of precisely and uniformly bonding the radiator (antenna) to the protective film is not easy, but also causes a major defect, resulting in poor economics and only the protective film is placed on the radiator The damage of the protective film having a weak strength may directly lead to a functional disorder, There is a problem in that the tanner is not visually beautiful because the tanner is recognized as an outside through the protective film.

Moreover, all of the above-described prior art techniques are not always based on the use of non-conductive fibrous fabrics or non-woven fabrics such as glass fibers, and thus are not only far from the realization of textures and patterns of black and white or color fabrics, And it is of course not possible to arbitrarily realize the position of the antenna in the surface layer portion, middle layer portion or lower layer portion of the case as required.

In addition, although a method of directly bonding a flexible antenna to a body of a mobile device by using an adhesive has been proposed, there is a problem that the reliability of the antenna function becomes inferior when the adhesive force is weakened. In addition, .

Accordingly, it is a first object of the present invention to provide an antenna-integrated mobile device casing having a high degree of design freedom capable of realizing a texture and a pattern of a monochrome or color fabric.

A second object of the present invention is to provide an antenna-integrated mobile device case in which an antenna is located in a surface layer portion, a middle layer portion, or a low-layer portion of a case in which a texture and a pattern of a monochrome or color fabric are implemented.

A third object of the present invention is to provide an antenna-integrated mobile device case in which an antenna may have a two-dimensional as well as a three-dimensional shape.

A fourth object of the present invention is to provide a mobile device casing having sufficient impact resistance and strength and light weight in spite of thickness reduction.

A fifth object of the present invention is to provide a mobile device case having high economical efficiency.

A sixth object of the present invention is to provide an effective antenna-integrated mobile device case capable of minimizing deterioration of RF characteristics of a mobile device.

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According to a preferred aspect of the present invention for attaining the first to sixth objects of the present invention, at least two layers of nonwoven fabric or non- (Original forged piece) having a laminated structure composed of a single piece; At least one antenna positioned in said circular segment; And an antenna integrated type mobile terminal comprising a molded resin part formed by RTM (Resin Transfer Molding) which is fixed to the predetermined position of the fabric piece and penetrates into the inside and the outside of the fabric piece and integrated with the circular piece and the antenna A device case is provided.
According to another preferred embodiment of the present invention, there is provided a laminated structure of at least two layers of nonwoven fabric or non-fabric non-conductive fiber, (Original forged piece); At least one antenna positioned in said circular segment; The antenna is fixed at a predetermined position of the fabric piece, and a carrier (not shown) formed of a molded resin part by RTM (Resin Transfer Molding) which is infiltrated into the inside and outside of the fabric piece and integrated with the circular piece and the antenna ) Is included by insert molding.

According to still another aspect of the present invention, there is provided an antenna-integrated mobile device casing made of glass fiber, wherein the nonconductive fiber is a glass fiber.

According to still another aspect of the present invention, there is provided a method of manufacturing an antenna, the antenna including an upper surface, a lower surface, an intermediate layer, or an arbitrary mixing point of the antennas, An integrated mobile device case is provided.

According to another aspect of the present invention, there is provided an antenna-integrated mobile device casing having at least one antenna having a two-dimensional and / or three-dimensional shape, / RTI >

According to still another aspect of the present invention, there is provided an antenna-integrated mobile device casing having a surface protective coating layer on an outer surface of the molded resin part to achieve the first to sixth objects of the present invention.

According to another preferred embodiment of the present invention, there is provided an antenna-integrated mobile device case in which the nonconductive fiber includes a non-conductive pigment or an antistatic agent .
In order to achieve the first to sixth objects of the present invention, a colored coating layer or an upper coating layer for shielding an antenna is formed on a surface of the carrier, An antenna-integrated mobile device casing is provided.

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As described above, the antenna-integrated mobile device case according to the present invention has high design freedom because it can freely implement the texture and pattern of black and white or color fabrics, and it can be used for two-, three-, or two- and three- At least one antenna which may be optionally provided can be selectively placed in the surface layer portion, the middle layer portion or the low-layer portion of the monochrome or color fabric, or the mixed portion of them, and even if the case is thinned, Impact strength and strength, light weight, and excellent economical efficiency. Further, it is possible to minimize deterioration of radio frequency (RF) characteristics of a mobile device according to need.

1A and 1B are a perspective view and a perspective view, respectively, of an antenna-integrated mobile device casing 1 manufactured by a resin transfer molding according to a preferred embodiment of the present invention.
FIG. 2 is an enlarged view showing a texture and a pattern that are expressed from a raw piece of an antenna-integrated mobile device case shown in a perspective view of FIG. 1A. FIG.
3A to 3D are schematic cross-sectional views illustrating an example in which an antenna is positioned on a surface layer portion (upper surface), an intermediate layer, an intermediate layer, and a lower layer portion (bottom surface) of the raw piece.
FIG. 4A is a plan view of an antenna with a built-in antenna according to another preferred embodiment of the present invention, FIG. 4B is a cross-sectional view of an antenna integrated type in which the carrier is integrated by insert molding, FIG. 4C is a plan view of an antenna-integrated mobile device case with a colored paint post-processing state for shielding an antenna, and FIG. 4D is an illustrative photograph showing an application example of a three-dimensional shape antenna.

The term "mobile device " used throughout the specification of the present invention refers to a cellular phone, an MP3 (Moving Pictures Experts Group) -1 Audio Layer-3, a PMP (Portable Media Player) A PDA (Personal Digital Assistant), a laptop, a notebook, a UMPC (Ultra-mobile Personal Computer), a tablet PC, a smart phone, a navigation device, Station Portable), an electronic dictionary, and the like, and is capable of uploading and / or downloading information.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1A and 1B are a perspective view and a perspective view, respectively, of an antenna-integrated mobile device casing 1 manufactured by a resin transfer molding according to a preferred embodiment of the present invention. FIG. 2 is a perspective view 3A to 3D are enlarged views showing the texture and the pattern that are expressed from the original piece 2 of the mobile device case 1. Figs. , An intermediate layer, and a low-layer portion, and will be described for the convenience of explanation.

An antenna-integrated mobile device case 1 manufactured by Resin Transfer Molding (RTM) according to a preferred embodiment of the present invention comprises at least two layers of original pieces (non-conductive pieces) 2 At least one antenna 3 located in the circular segment 2 and an antenna 3 fixed at a predetermined position of the circular segment 2 and at the same time the circular segment 2 And a molding resin part 4 penetrating the inside and outside of the circular piece 2 and the antenna 3 and integrated with the circular piece 2 and the antenna 3 described above.

Here, the circular piece 2 may be composed of two or more layers, and the circular piece 2 constituting the one layer may be a nonwoven fabric or a nonwoven fabric having a unique pattern and texture, Nonconductive fiber, and optionally, different types of nonconductive fibrous element fraction layers may be stacked in any structure.

Examples of the non-conductive fibers include inorganic fibers such as glass fibers, natural fibers such as cotton fibers and hemp fibers, regenerated fibers such as rayon and acetate fibers, and synthetic fibers such as acryl, polyester and polyurethane, Inorganic fibers or cotton fibers excellent in heat resistance, and most preferably, glass fibers.

The antenna 3 may be formed at one or more positions and may be located at different points of the circular segment 2 and the antenna 3 may be formed on the upper face, (That is, a surface layer portion and an intermediate layer, or a surface layer portion and a lower layer portion, or an intermediate layer and a lower layer portion, or a surface layer portion, an intermediate layer, and a lower layer portion).

It goes without saying that the above-described antenna 3 may be a two-dimensional or three-dimensional shape, or a combination of two or three-dimensional shapes.

3A to 3D, in the case of the antenna-integrated mobile device case 1 according to the present invention, the antenna 3 can be optionally and appropriately positioned at an appropriate position in the cross section of the circular segment 2 As shown in FIG.

3a shows a case where the circular segment 2 is formed by a laminated structure of two layers of the first circular segment 2a and the second circular segment 2b and at least one antenna 3 Wherein the first circular piece 2a and the second circular piece 2b and at least one or more antennas 3 are located on the upper surface of the first molded piece 2a, 4 to form the antenna-integrated mobile device case 1.

Therefore, although the antenna 3 is located on the front surface of the antenna-integrated mobile device case 1, it is most advantageous in terms of RF (Radio Frequency) characteristics, but the original piece 2 The texture and the pattern are concealed by the antenna 3.

The resin molding section 4 is provided not only inside the fabric matrix of each of the first original piece 2a and the second original piece 2b but also between the contact gap between them and the contact gap between the antenna 3 The first and second circular segments 2a and 2b and the entire outer surface of the antenna 3 are smoothly and uniformly surrounded and the surface of the antenna 3 on which the antenna 3 exists There is no step between the nonexistent surfaces.

The molded resin part 4 may be formed of a suitable resin as required, for example, an epoxy resin, a polyethylene terephthalate resin, a polycarbonate resin, an acryl resin, a polyester resin, But are not limited to, polymethyl pentene, polyether sulfones, polyether imides, polyarylates, polymethyl methacylates, urethane acrylates, epoxy acrylates, and may be formed of a transparent resin such as epoxy acrylate, polyester acrylate and acryl acrylate. The most common ones are epoxy resin and the present invention is not limited thereto.

Further, in the present invention, the above-mentioned circular piece 2 may include a non-conductive pigment or an antistatic agent for preventing or reducing the RF characteristic of the antenna 3, and such non-conductive pigment and antistatic agent The resin molding section 4 is preferably a resin having a low viscosity of the resin and a good fluidity.

In the drawing, reference numeral 5 denotes a surface coating layer as an optional component, for example, a UV curable transparent hard coat layer or a colored paint layer or an antistatic layer excellent in scratch resistance.

3B shows a case where the circular segment 2 is formed by a laminated structure of three layers of the first circular piece 2a, the second circular piece 2b and the third circular piece 2c , At least one antenna 3 is located at an intermediate layer between the first circular piece 2a and the second circular piece 2b and the third circular piece 2c is again positioned on the first circular piece 2a The first circular piece 2a and the second circular piece 2b and the third circular piece 2c and at least one or more antennas 3 are formed by the resin molding part 4 So that the antenna-integrated mobile device case 1 is formed.

The resin molding section 4 is provided not only inside the fabric matrix of each of the first circular piece 2a, the second circular piece 2b and the third circular piece 2c, The first circular piece 2a and the second circular piece 2b and the entire outer surface of the antenna 3 are smoothly and uniformly surrounded by filling the gap between the gap and the antenna 3 .

Therefore, in the illustrated example, since the antenna 3 is positioned in the intermediate layer of the antenna-integrated mobile device case 1, the RF (radio frequency) characteristic can be somewhat lowered. However, the texture and the pattern possessed by the third original piece 2c It is not concealed by the antenna 3, so that it is possible to freely implement the texture and the pattern by the original piece 2.

The other items are substantially the same as the case of Fig. 3A described above.

3C shows a case where the circular segment 2 is formed by a laminated structure of two layers of the first circular piece 2a and the second circular piece 2b, Shows a case in which the third original piece 2c is not present but is located in the intermediate layer between the first original piece 2a and the second original piece 2b, The second original piece 2b and at least one antenna 3 are integrally cured by the resin molding section 4 to form the antenna-integrated mobile device case 1. [

The resin molding section 4 is provided not only inside the fabric matrix of each of the first original piece 2a and the second original piece 2b but also between the contact gap between them and the contact gap between the antenna 3 And the first and second circular segments 2a and 2b and the entire outer surface of the antenna 3 are smoothly and uniformly surrounded by the first circular segment 2a and the second circular segment 2b, And is essentially the same.

Also in Fig. 3 (d), the circular piece 2 is formed as a laminated structure of two layers of the first circular piece 2a and the second circular piece 2b, and at least one antenna 3 The first circular piece 2a and the second circular piece 2b and the at least one antenna 3 are located at the bottom of the two-piece piece 2b, (4) to form the antenna-integrated mobile device case (1).

The resin molding section 4 is provided not only inside the fabric matrix of each of the first original piece 2a and the second original piece 2b but also between the contact gap between them and the contact gap between the antenna 3 And the first and second circular segments 2a and 2b and the entire outer surface of the antenna 3 are smoothly and uniformly surrounded.

In the case of FIG. 3D, since the antenna 3 is located at the lower layer portion, the RF characteristic may be lowered the most, but the RF characteristics equivalent to those in the case where the antenna is formed on the PCB (Printed Circuit Board) In this case as well, the texture and pattern of the first circular segment 2a on the front face are free to be implemented, and the rest are essentially the same as those described in FIG. 3C.

4A is a plan view of the antenna-integrated carrier 100, and FIG. 4B is a plan view of the carrier 100 according to another preferred embodiment of the present invention. FIG. 4A is a plan view of the antenna- Fig. 4C is a plan view of an antenna-integrated mobile device case 1a having a colored paint post-processing state for concealing the antenna 3, Fig. 4D is a plan view of the mobile device case 1a, The structure of the carrier 100 including the antenna 3 described above is essentially the same as that described in Figs. 1 to 3 So that a brief description will be given.

The carrier 100 according to the present invention includes at least one original piece 2 made of at least two layers of nonconductive fibers, at least one antenna 3 disposed in the original piece 2, The antenna 3 is fixed to a predetermined position of the circular piece 2 and the molding resin portion 4 penetrated into the inner and outer portions of the circular piece and integrated with the circular piece 2 and the antenna 3, .

The carrier 100 is pre-positioned in a mold (not shown) by insert molding, and then molded so that the carrier 100 including the antenna 3 located in the original piece 2 does not have the original piece The antenna 3 is integrally located in a part of the conventional resin molding part 4 and is mounted on the antenna 3 so as to conceal or compensate the heterogeneous pattern and shape between the resin molding part 4 and the carrier 100, Or a surface coating layer 5 as a colored coating layer or an overcoat layer for pattern hiding of the original piece 2 is formed.

Meanwhile, the carrier 100 may be formed by physically assembling the antenna 3 to a piece having only the circular piece 2 and the resin molded part 4, and then insert-molding the same. In which case the carrier 100 is located outside the back plate of the mobile device.

By using the carrier 100 according to the present invention as described above, it becomes possible to apply the antenna 3 having a curved three-dimensional shape, which was conventionally difficult.

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Although the present invention has been described in detail with reference to the accompanying drawings, it is to be understood that the present invention is not limited thereto, and various changes and modifications may be suggested to those skilled in the art.

1.1a: an antenna-integrated mobile device case according to the present invention
2: original piece (original forged piece) 2a: first original piece
2b: second circular fragment 2c: third circular fragment
3: antenna 4: molded resin part
5: Surface coating layer
100: Carrier

Claims (8)

(Original forged piece) having a laminated structure of at least two layers of nonwoven fabric or non-fabric non-conductive fibers;
At least one antenna positioned in said circular segment;
And a molded resin part formed by RTM (Resin Transfer Molding) which is fixed to the predetermined position of the fabric piece and penetrates into the inside and outside of the fabric piece and integrated with the circular piece and the antenna
Antenna all-in-one mobile device case. (Original forged piece) having a laminated structure of at least two layers of nonwoven fabric or non-fabric non-conductive fibers;
At least one antenna positioned in said circular segment;
The antenna is fixed at a predetermined position of the fabric piece, and a carrier (not shown) formed of a molded resin part by RTM (Resin Transfer Molding) which is infiltrated into the inside and outside of the fabric piece and integrated with the circular piece and the antenna ) Is included by insert molding
Antenna all-in-one mobile device case. The antenna case according to claim 1 or 2, wherein the nonconductive fiber is a glass fiber. 3. The antenna-integrated mobile device case according to claim 1 or 2, wherein the at least one antenna is located on an upper surface, a bottom surface, an intermediate layer, or any combination thereof of the raw fabric piece.
The antenna case according to claim 4, wherein the at least one antenna has a two-dimensional or three-dimensional shape or a two-dimensional or three-dimensional shape.
The antenna unit case according to claim 1 or 2, further comprising a surface coating layer on an outer surface of the molded resin part.
3. The antenna-integrated mobile device case according to claim 1 or 2, wherein the original piece includes a non-conductive pigment or an antistatic agent.
The antenna-equipped mobile device case according to claim 2, wherein a colored coating layer or a top coat layer for covering the antenna is formed on the surface including the carrier.

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