WO2003067948A1 - Equipement de radio communication - Google Patents
Equipement de radio communication Download PDFInfo
- Publication number
- WO2003067948A1 WO2003067948A1 PCT/JP2003/000169 JP0300169W WO03067948A1 WO 2003067948 A1 WO2003067948 A1 WO 2003067948A1 JP 0300169 W JP0300169 W JP 0300169W WO 03067948 A1 WO03067948 A1 WO 03067948A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wireless communication
- communication device
- coating
- resin composition
- metal
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/0279—Improving the user comfort or ergonomics
- H04M1/0283—Improving the user comfort or ergonomics for providing a decorative aspect, e.g. customization of casings, exchangeable faceplate
Definitions
- the present invention relates to a wireless communication device having an appearance that exhibits a glittering high glitter.
- transceivers cordless telephones or personal digital assistants (PDAs) have been commercially available as wireless communication devices.
- devices using wireless local area networks (L AN) such as Bluetooth are on sale.
- home gateways which serve as points of contact between digital home appliances and the Internet, are currently being studied.In the future, many electronic products, including home appliances, will be digitized, and wireless communications will be established between them. It is expected that communication will be possible.
- wireless communication devices become portable, their design will be an important factor in selecting purchased devices.
- glossy pigments are sometimes included in constituent members forming the appearance. This gloss pigment is blended beforehand in the resin composition of each component before molding, or is blended in a paint applied after molding each component, so that it exists on the outer surface of each component. Formulation 'added. And gloss When the pigment reflects light, each component has a glittering appearance.
- wireless communication devices that have a brilliant appearance seem to give a mechanical impression to human psychology, and sales seem to be strong compared to devices that do not have a brilliant appearance.
- glitter is important in the appearance of wireless communication equipment, and it can be said that it has such an influence on the sales of the product.
- Bright pigments include flake-like aluminum powder, mica flake particles coated with metal oxides such as titanium dioxide and iron oxide, graphite flake particles, and iron oxide particles whose main components are iron oxide crystal particles. Etc. are well known.
- metal powder such as aluminum powder is not suitable for use in wireless communication devices because it has conductivity and magnetism and blocks radio waves.
- mica fragments (pearl my strength) coated with titanium dioxide, etc. do not have radio wave shielding properties, but tend to lack glitter due to low surface smoothness and have cleavage properties.
- the particles are broken during kneading to the resin composition or the paint, and the glitter is further reduced.
- the graphite oxide particles coated with the metal oxide have a problem in that the black color of the graphite is reflected in the appearance thereof, so that the range of use in design is limited.
- the iron oxide crystal particles also have a brown to black color, there is a problem in that the range in which the iron oxide crystal particles can be used in design is limited as in the case of the graphite piece particles.
- the present invention has been made in view of the above problems. Its purpose is to mix glass flakes or the like with a high surface smoothness as it is or to coat the surface with a metal or metal oxide and mix it into a resin composition or paint, and then apply this resin composition to a casing or the like.
- a radio communication device having an appearance that gives a high brilliant appearance without causing radio wave interference by molding into a component that is easily visible in appearance or by forming a coating film on the surface of the component. is there. Disclosure of the invention
- a glass flake and There is provided a wireless communication device including a member formed by molding a resin composition containing at least one material selected from the group consisting of silica flakes.
- the resin composition contains the selected material in an amount of 5 to 30% by weight.
- a wireless communication system including a member provided with a coating film containing at least one material selected from the group consisting of glass flakes and silica flakes. Equipment is provided.
- At least one material selected from the group consisting of glass flakes and silica flakes is selected from the group consisting of metals and metal oxides.
- a wireless communication device including a member formed by molding a resin composition containing a glitter pigment coated on at least one side.
- the glitter pigment is obtained by coating the selected material with titanium dioxide.
- the titanium dioxide is preferably of a rutile type.
- the glitter pigment is obtained by coating the selected material with a metal oxide thin film having a thickness of 40 to 300 nm.
- the glitter pigment is obtained by coating the selected material with a thin metal film having a thickness of 30 to 200 nm.
- the resin composition preferably contains 1 to 30% by weight of the glitter pigment coated with the metal oxide.
- the resin composition contains 1 to 20% by weight of the glittering pigment coated with the metal.
- At least one material selected from the group consisting of glass flakes and silica flakes is selected from the group consisting of metals and metal oxides.
- a wireless communication device including a member having the following.
- FIG. 1 is a diagram illustrating a measurement result of an electromagnetic wave shielding function according to the first embodiment.
- FIG. 2 is a diagram showing measurement results of the electromagnetic wave shielding function in Comparative Example 1. BEST MODE FOR CARRYING OUT THE INVENTION
- Glass flakes or silica flakes are insulators and do not have radio wave shielding properties. In addition, it has no absorption in the visible light range and is a flaky powder with extremely high surface smoothness. Therefore, the light reflected on the surface of the base material is not colored and scattered, and the luminance before the reflection is almost maintained. Further, since the base material has no cleavage property, it is hard to be crushed when being mixed and kneaded with the resin composition or the paint. When the base material is blended and added to the resin composition or coating as it is ⁇ ", the resin composition or coating can be made using conventional gloss pigments without shielding radio waves. That is, a component formed by molding the resin composition containing the base material or a component provided with a coating film containing the base material is required for a wireless communication device. Silica flakes refer to scaly powders made of silicon oxide only.
- the base material preferably has an average particle size of 5 to: 1.0 Om and an average thickness of 0.5 to 5 Aim.
- the average particle diameter is an average of the longest diameter on a smooth surface. If the average particle size is too large, the base material is easily crushed during mixing and kneading with the resin composition or the paint, and it is difficult to maintain the initial particle size. Also, when the base material is coated with a metal or metal oxide thin film as described later, the base material is crushed, so that a crushed surface not covered with the metal or metal oxide appears. Reflected light There is also a problem that the glitter is reduced.
- the base material in the resin composition or the coating film is oriented in different directions, and the direction of the reflected light is also different, so that the reflected light is scattered and the glitter is reduced.
- the average thickness of the base material is less than 0.5 m, the strength is insufficient, and the base material is deformed in the resin composition or the coating film, the smooth surface is curved, and the reflected light is scattered. easy.
- the thickness is more than 5 m, the flexibility of the base material is reduced, so that the base material is liable to be broken when kneaded and kneaded with the resin composition or the paint.
- this base material By coating this base material with a thin film of metal or metal oxide, it is possible to further increase the brightness of light reflected on the surface or to impart a metallic color to the reflected light (hereinafter, the base material is referred to as a base material).
- a base material Those coated with a metal or metal oxide are called "brilliant pigments").
- Glittering pigments are formed by forming a metal or metal oxide thin film on the surface of a substrate with high surface smoothness by sputtering or solution deposition, etc., and the surface reflects the surface condition of the substrate as it is. It becomes extremely smooth.
- the refractive index of the base material is around 1.5, whereas the refractive index of the metal oxide is generally higher.
- the difference in the refractive index between the pigment and the atmosphere at the surface of the pigment increases, and reflection is more likely to occur due to the increase in the difference in the refractive index.
- the glittering pigment has a metal thin film, the reflected light will exhibit a color peculiar to the metal.
- the metal constituting the thin film is not particularly limited, but gold, silver, nickel, copper, tin, zinc or an alloy thereof is exemplified.
- radio wave shielding becomes more remarkable, so its thickness must be kept at 200 nm or less. On the other hand, at least 30 nm is required to reflect visible light.
- the metal oxide is not particularly limited.
- ITO indium-doped tin oxide
- rutile-type titanium dioxide is preferable.
- Rutile-type titanium dioxide has a higher chemical stability and refractive index than the anatase type, and has a typical refractive index of 2.70.
- Metal oxides are generally insulators and partly semiconductors. Therefore, there is no radio interference caused by the brilliant pigment coated with the metal oxide. Further, since the metal oxide is almost colorless, the reflected light is not colored.
- the thickness of the metal oxide thin film is preferably 40 to 30.0 nm. If it is less than 40 nm, the function of increasing the luminance of the reflected light and the function of preventing the elution of alkali components are not sufficiently exhibited. On the other hand, if it exceeds 300 nm, the flexibility of the substrate may be impaired.
- a thin film of a metal oxide is usually transparent, so that light is reflected between the surface of the thin film and the surface of the substrate. Therefore, the light reflected on the surface of the thin film and the light reflected on the surface of the base material may interfere with each other to give an interference color.
- the condition for exhibiting the interference color is derived from a known relational expression between the thickness of the thin film and the refractive index. While satisfying the relational expression, a thin film of the metal oxidized product falling within the above thickness range may be formed.
- the substrate is glass flake
- the contained components elute from the surface over time.
- the elution of the alkali component degrades the resin or paint component with which it comes into contact, and also reduces the surface smoothness of the glass flake itself.
- a metal or metal oxide thin film covers the entire surface of the glass flake, so that the elution of this component is suppressed.
- metal oxide thin films have high chemical durability and are effective in preventing elution of alkaline components.
- the glitter pigment for example, a glitter pigment Metashine series manufactured by Nippon Sheet Glass Co., Ltd. is exemplified.
- the meta shine nickel series with electroless nickel plating on the glass flake surface MC5480NS, MC5230NS, MC5150NS, MC5140NS, MC5090NS, MC5030NS, MC5480NB, MC5230NB, MC5150NB, MC5140NB, MC5090NB, MC5030NB, MC1040NB, MC1020NB
- Metasilver series with silver electroless plating MC5480PS, MC5230PS, MC5150PS, MC5140PS, MC5090PS, MC5030PS, MC2080PS, MC2040PS, MC2025PS
- metashine gold series with gold electroless plating rutile Meta-inch with titanium dioxide coating Tania coat series MC1020RG.
- These glittering pigments may be surface-treated with silica or a coupling agent in order to improve water resistance and kneadability to the resin composition and paint, and to improve ultraviolet light absorption in order to improve light resistance. What formed the thin film may be sufficient.
- the content is preferably 5 to 30% by weight 9 when the solvent in the paint is removed to form a coating film.
- the content is preferably the same. If the amount is less than 5% by weight, the glitter will be insufficient, while if it exceeds 30% by weight, the relative amount of the resin component will be insufficient, and the integrity of the coating film and the resin composition will be impaired.
- a glitter pigment having a thin film of a metal oxide is blended and added to a resin composition or a coating film, its content is preferably from 1 to 30% by weight with the solvent removed. When the content is less than 1% by weight, the glitter tends to be insufficient. On the other hand, when the content is more than 30% by weight, the ratio of the resin component in the resin composition or the coating film relatively decreases. The strength may be impaired. Further preferred content is 5-1 5 weight 0/0.
- a glitter pigment having a metal thin film When a glitter pigment having a metal thin film is blended and added to a resin composition or a coating film, its content is preferably 1 to 20% by weight in a state where the solvent is removed. Further, 5 to 15% by weight is preferable. When the content is less than 1% by weight, the glitter is insufficient. On the other hand, when the content is more than 20% by weight, the glitter pigments come into contact with each other, and conductivity or magnetism appears and radio wave transmission is impaired. There is a risk.
- thermosetting resins such as acrylic resin, polyester resin, epoxy resin, phenol resin, urea resin, fluororesin, polyester urethane Curing resin, epoxy-polyester curing resin, acrylic polyester resin, acryl-urethane curing resin, acryl-melamine curing resin or polyester-melamine curing resin, etc.
- polyethylene resin, polypropylene as thermoplastic resin Resin, petroleum resin, thermoplastic polyester resin, thermoplastic fluororesin, and the like. Injection molding is possible with thermoplastic resins, so molded products with complex shapes can be obtained.
- polyisocyanate, amine, polyamide, polybasic acid, acid anhydride, polysulfide, boron trifluoride, acid dihydrazide or imidazole can be used.
- other coloring pigments having no conductivity and magnetism may be blended and added to the resin composition or the coating film.
- the coating and resin composition containing glass flakes, silica flakes and Z or brilliant pigment exhibit a high brilliant sensation due to reflected light without shielding radio waves. It can be used as a component.
- a glitter pigment composed of glass flakes coated with nickel by an electroless plating method (MC 1004 NB manufactured by Nippon Sheet Glass Co., Ltd., average particle size 40 m, average thickness 1 m, nickel film thickness 100 nm), Knead so that the content in the coating film becomes 5% by weight in the clear paint, and spray it onto a 0.3 mm-thick polyester film to give an average film thickness of 200 m using a spray.
- the paint was applied as described above. After confirming that it was completely dried, it was cut into a test piece of 150 x 15 O mm, and TR-17301A and R3361A manufactured by Advantest were used in combination. The electromagnetic wave shielding function of the test piece was measured.
- the electromagnetic shielding effect can be calculated by defining the electric field strength in a space where there is no shielding material as E0 (V / m). —The electric field strength with the shield material is E 1 (VZm),
- the incident electromagnetic wave is a plane wave
- the size of the shield material is infinitely large
- the electromagnetic wave is incident perpendicular to the shield material.
- Fig. 1 shows the results of measurements in the frequency range of 0 to 1, 000 MHz. From Fig. 1, it can be seen that this test piece does not shield electromagnetic waves at all. That is, it can be said that the coating film containing the glitter pigment can be used as a coating film of a wireless communication device. Further, in a room of normal brightness, the brightness of the test piece was visually evaluated by five sensory examiners. As a result, all of the sensory panelists evaluated that the test piece of Comparative Example 1 described below also had a high glitter.
- Example 1 instead of the bright pigment, aluminum flake commercially available as a luster pigment (Alpaste manufactured by Toyo Aluminum Co., Ltd., 0100 ⁇ average particle size 45 m, average thickness 0.3 / m) was used. A test piece was prepared in the same manner except that the electromagnetic wave shielding function was measured. Figure 2 shows the measurement results.
- the wireless communication device of the present invention including a member formed by molding a resin composition containing at least one material selected from the group consisting of glass flakes and silica flakes, it is possible to generate light-induced High design quality can be provided in appearance.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Casings For Electric Apparatus (AREA)
- Telephone Set Structure (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002475217A CA2475217A1 (en) | 2002-02-07 | 2003-01-10 | Wireless communication apparatus |
EP03700532A EP1476005A4 (en) | 2002-02-07 | 2003-01-10 | RADIO COMMUNICATION DEVICES |
US10/911,822 US20050107512A1 (en) | 2002-02-07 | 2004-08-05 | Wireless communication apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-30857 | 2002-02-07 | ||
JP2002030857A JP2003234581A (ja) | 2002-02-07 | 2002-02-07 | 無線通信機器 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/911,822 Continuation US20050107512A1 (en) | 2002-02-07 | 2004-08-05 | Wireless communication apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003067948A1 true WO2003067948A1 (fr) | 2003-08-14 |
Family
ID=27677916
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/000169 WO2003067948A1 (fr) | 2002-02-07 | 2003-01-10 | Equipement de radio communication |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1476005A4 (ja) |
JP (1) | JP2003234581A (ja) |
CN (1) | CN100566518C (ja) |
CA (1) | CA2475217A1 (ja) |
TW (1) | TW200400747A (ja) |
WO (1) | WO2003067948A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006328278A (ja) * | 2005-05-27 | 2006-12-07 | Nippon Sheet Glass Co Ltd | 油性インキ組成物 |
US8024016B2 (en) | 2006-07-18 | 2011-09-20 | Lg Electronics Inc. | Portable electronic device |
JP5626055B2 (ja) * | 2011-03-18 | 2014-11-19 | 富士通株式会社 | 電子機器 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11340639A (ja) * | 1998-05-22 | 1999-12-10 | Matsushita Electric Ind Co Ltd | 電子機器の筐体 |
JP2000349874A (ja) * | 1999-06-09 | 2000-12-15 | Yasuo Daidoji | 携帯電話機等機器本体の塗装構造 |
JP2001226601A (ja) * | 1999-12-06 | 2001-08-21 | Nippon Sheet Glass Co Ltd | 光沢性樹脂組成物及びその成形品 |
JP2001323217A (ja) * | 2000-05-17 | 2001-11-22 | Nippon Sheet Glass Co Ltd | 光沢性粉体塗料組成物およびその塗装物品 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5753371A (en) * | 1996-06-03 | 1998-05-19 | The Mearl Corporation | Pearlescent glass pigment |
-
2002
- 2002-02-07 JP JP2002030857A patent/JP2003234581A/ja active Pending
-
2003
- 2003-01-10 EP EP03700532A patent/EP1476005A4/en not_active Withdrawn
- 2003-01-10 CN CNB038033690A patent/CN100566518C/zh not_active Expired - Fee Related
- 2003-01-10 CA CA002475217A patent/CA2475217A1/en not_active Abandoned
- 2003-01-10 WO PCT/JP2003/000169 patent/WO2003067948A1/ja active Application Filing
- 2003-02-07 TW TW92102530A patent/TW200400747A/zh unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11340639A (ja) * | 1998-05-22 | 1999-12-10 | Matsushita Electric Ind Co Ltd | 電子機器の筐体 |
JP2000349874A (ja) * | 1999-06-09 | 2000-12-15 | Yasuo Daidoji | 携帯電話機等機器本体の塗装構造 |
JP2001226601A (ja) * | 1999-12-06 | 2001-08-21 | Nippon Sheet Glass Co Ltd | 光沢性樹脂組成物及びその成形品 |
JP2001323217A (ja) * | 2000-05-17 | 2001-11-22 | Nippon Sheet Glass Co Ltd | 光沢性粉体塗料組成物およびその塗装物品 |
Non-Patent Citations (1)
Title |
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See also references of EP1476005A4 * |
Also Published As
Publication number | Publication date |
---|---|
CN1628496A (zh) | 2005-06-15 |
CN100566518C (zh) | 2009-12-02 |
EP1476005A4 (en) | 2005-05-18 |
CA2475217A1 (en) | 2003-08-14 |
JP2003234581A (ja) | 2003-08-22 |
EP1476005A1 (en) | 2004-11-10 |
TW200400747A (en) | 2004-01-01 |
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