JP2010263282A - Mobile phone equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide thin mobile phone equipment which is free from reception interference due to high frequency noise and an influence upon the degradation of reception sensitivity without sticking a magnetic sheet like a radio wave absorber to a flexible cable and has an upper enclosure made thin and is superior in design and portability. <P>SOLUTION: A reinforcing sheet metal 14 and an upper enclosure case sheet metal 11 are brought into contact with and stuck to each other, whereby the reinforcing sheet metal 14 and the upper enclosure case sheet metal 11 are constituted as one body and are coupled at a high frequency and act as one metal conductor. Though an antenna current from a wireless part is made to flow through the reinforcing sheet metal 14 used as an incorporated antenna, the antenna current doesn't flow to a flexible cable 12 passing in a hollow of the metal conductor, and reception interference due to high frequency noise radiated from the flexible cable 12 wherein a control signal flow at a high speed, and an influence upon the degradation of reception sensitivity can be suppressed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a portable electronic device having a wireless function such as a cellular phone.

Conventionally, in a folding cellular phone device, there is a control signal for driving the display device of the upper casing on the signal line wired to the flexible cable in the upper casing, and this control signal needs to be controlled at high speed. At the time of control and display data writing, high frequency noise that is an integral multiple of this operation timing is radiated.

In recent mobile phone devices, various wireless circuits such as a one-segment function are often mounted. Furthermore, there are many configurations in which a built-in antenna is adopted as the antenna of the radio unit and design and portability are maintained.
As a built-in antenna of the radio circuit of this cellular phone device, a metal object such as a reinforcing sheet metal in the upper casing is used to flow an antenna current of the radio circuit, and the metal object in the upper casing is used as an antenna element.

Since a flat cable, which is a high-frequency noise generating source controlled at a high speed, is disposed in the vicinity of a metal object in the upper casing used as the antenna element, reception interference and reception of radio part reception due to the high-frequency noise are received. Measures for sensitivity degradation are necessary.
As a countermeasure against high-frequency noise generated from the flat cable, for example, as disclosed in Patent Document 1, a countermeasure for sticking a magnetic sheet such as a radio wave absorber to the flat cable is disclosed.
FIG. 7 is a cross-sectional view of the upper casing of the conventional configuration example. From the display surface, the front panel 10, the display device 8, the reinforcing sheet metal 14, the radio wave absorber 13, the flexible cable 12, and the upper housing case sheet metal 11 are configured.

When the reinforcing sheet metal 14 is used as a built-in antenna, the radio wave absorber 13 is attached between the flexible cable 12 and the reinforcing sheet metal 13 in order to eliminate the influence of high-frequency noise from the flexible cable 12.

JP 2005-184195 A

  However, as shown in FIG. 7, a countermeasure for attaching a radio wave absorber such as a magnetic sheet to a flexible cable as in Patent Document 1, as shown in FIG. 7, is between a flexible cable and a metal object (reinforcing sheet metal in FIG. 7) as an antenna element. Since it is necessary to affix a magnetic sheet, it becomes an obstacle for thickness reduction.

  The present invention has been made in view of these problems described above, and an object of the present invention is to provide a thin mobile phone device that is excellent in design and portability by reducing the thickness of the upper casing.

  In order to achieve the above-described object, the mobile phone device is configured to be foldable, and includes an upper housing and a lower housing coupled via a hinge portion, wherein the upper housing includes at least a reinforcing sheet metal and an upper housing. A flexible cable having a wiring pattern formed in the upper housing, the flexible cable being formed as a built-in antenna of a radio unit, the flexible cable being formed of an upper housing case metal plate and a reinforcing metal plate; The structure is sandwiched between.

With this configuration, the upper casing case sheet metal and the reinforcing sheet metal are in close contact with each other and the flexible cable is sandwiched so that the upper casing case sheet metal and the reinforcing sheet metal are coupled at a high frequency and act as an integral metal conductor, and are used as a built-in antenna. Even if the antenna current from the radio unit is applied to the sheet metal, the antenna current does not flow to the flexible cable that passes through the hollow metal conductor, and reception interference and reception due to high-frequency noise radiated from the flexible cable through which the control signal flows at high speed. The influence of sensitivity deterioration can be suppressed.
Further, the upper casing case sheet metal and the reinforcing sheet metal of the upper casing are attached with an adhesive tape.

As a result, the reinforcing sheet metal and the upper casing case sheet metal are in close contact with each other, so that the reinforcing sheet metal and the upper casing case sheet metal are coupled at a high frequency and act as an integral metal conductor, and the wireless sheet is used as a reinforcing sheet metal used as an internal antenna. The antenna current does not flow to the flexible cable that passes through the hollow metal conductor even if the antenna current from the antenna is passed, and the influence of reception interference and reception sensitivity deterioration due to high-frequency noise radiated from the flexible cable through which the control signal flows at high speed Can be suppressed.
Further, the upper casing case sheet metal of the upper casing and the reinforcing sheet metal are integrally formed, and a hollow space is provided in the integrally formed upper casing case sheet metal and the reinforcing sheet metal, and the hollow space is A flexible cable is used.
As a result, the reinforcing sheet metal and the upper casing case sheet metal are integrally configured, so that the reinforcing sheet metal and the upper casing case sheet metal are coupled at a high frequency and act as an integral metal conductor, and wirelessly connected to the reinforcing sheet metal used as an internal antenna. The antenna current does not flow to the flexible cable that passes through the hollow metal conductor even if the antenna current from the section flows. The reception disturbance due to the high-frequency noise radiated from the flexible cable through which the control signal flows at high speed and the reception sensitivity deteriorate. The influence can be suppressed.

  According to the present invention, the influence of reception sensitivity deterioration can be suppressed, and a thinner mobile phone device can be configured.

Cross section of upper casing (2a-2b) according to the present invention Sectional view of the upper casing (1a-1b) of Embodiment 1 according to the present invention 1 is a top perspective view of an upper casing according to a first embodiment of the present invention. Sectional view of the upper housing (1a-1b) of the second embodiment according to the present invention Mobile phone device configuration diagram according to the present invention Mobile phone device block diagram according to the present invention Conventional upper casing cross section

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.

  A cellular phone device according to a first embodiment of the present invention will be described with reference to FIGS.

1 is a cross-sectional view of the upper case (2a-2b) of the mobile phone device according to the present invention, FIG. 2 is a cross-sectional view of the upper case of the first embodiment (1a-1b), and FIG. FIG. FIG. 5 is a block diagram of the mobile phone device, and FIG. 6 is a block diagram of the mobile phone device.
As shown in FIG. 5, the mobile phone device according to the present invention includes an upper housing 1, a lower housing 2, and a hinge portion 3, and includes an operation unit 5 and a control circuit unit that is a circuit constituting the mobile phone device, wireless A lower housing 2 having a circuit unit, a power supply unit, a battery unit and the like (not shown) and an upper housing 1 having a display panel 4, a receiver 6 and the like are connected via a hinge unit 3 so as to be opened and closed. Yes.
FIG. 6 shows a block diagram of a cellular phone device. The operation unit 5, the battery unit 16, and the control board unit 20 are mounted on the lower housing 2 side, and the power supply unit 17, the control unit 18, and the radio unit 19 are mounted on the control board unit 20. Further, the display device 8 and the receiver 6 are connected to the control board 20 via the flexible cable 12 in the upper casing 1. In addition, as the antenna of the wireless unit 19, a built-in antenna 21 is configured by a reinforcing sheet metal that is a metal object inside the upper housing 1.
As an example of the radio reception operation, the operation of each part will be described by taking the one-segment reception function operation as an example.
From the standby state of the mobile phone device, the one-segment function activation operation from the operation unit 5 by the user is detected by the control unit 18, the wireless unit 19 for one-seg reception is activated, and the metal object configured in the upper casing 1 A received signal is input via the built-in antenna 21 and a one-segment reception operation is performed. The control unit 18 converts the one-segment received data from the wireless unit 19 into image data, and writes the image display data to the display device 8 via the flexible cable 12 continuously at high speed.
In this way, when the one-seg reception function is operated, high-speed continuous control is required for the display device 8 that takes noise near the built-in antenna 21 made of a metal object of the upper housing 1 and causes reception interference and reception sensitivity deterioration. An image display data signal is transmitted via the flexible cable 12.
FIG. 1 is a cross-sectional view (2a-2b) of the upper casing of the mobile phone device according to the present invention. From the display surface, it is composed of a front panel 10, a display device 8, a reinforcing sheet metal 14, a flexible cable 12, and an upper housing case sheet metal 11. Here, the reinforcing sheet metal 14 is connected to the wireless unit 19 inside the lower casing 2 described above, and has a function as a built-in antenna 21. FIG. 2 is a cross-sectional view (1a-1b) of the upper casing of the first embodiment. The entire panel 10, display device 8, reinforcing sheet metal 14, flexible cable 12, and upper housing case sheet metal 11 are formed from the display surface. Here, the reinforcing sheet metal 14 and the upper housing case sheet metal 11 are bonded to each other with adhesive tape 15 on both sides of the flexible cable 12.
FIG. 3 is a top perspective view of the upper casing of the first embodiment. The periphery of the flexible cable 12 is attached with an adhesive tape 15 so that the reinforcing sheet metal 14 and the upper housing case sheet metal 11 can be in close contact with each other.
By adopting this structure, the reinforcing sheet metal 14 and the upper casing case sheet metal 11 are brought into close contact with each other, so that the reinforcing sheet metal 14 and the upper casing case sheet metal are coupled at a high frequency, and act as an integral metal conductor, as a built-in antenna. Even if an antenna current from the radio section is passed through the reinforcing sheet metal 14 to be used, the antenna current does not flow into the flexible cable 12 passing through the hollow metal conductor, but the high frequency radiated from the flexible cable 12 through which the control signal flows at high speed. It is possible to suppress the influence of reception interference and reception sensitivity deterioration due to noise.

FIG. 4 is a cross-sectional view (1a-1b) of the upper casing according to the second embodiment. The display panel is composed of a front panel 10, a display device 8, a reinforcing sheet metal 14, a flexible cable 12, and an upper housing case sheet metal 11.
Here, by forming the reinforcing sheet metal 14 and the upper casing case sheet metal 11 integrally, the reinforcing sheet metal 14 and the upper casing case sheet metal are coupled at a high frequency and act as an integral metal conductor, which is used as a built-in antenna. 14, even if an antenna current from the radio unit is passed, the antenna current does not flow to the flexible cable 12 passing through the hollow metal conductor, and reception interference due to high-frequency noise radiated from the flexible cable 12 through which the control signal flows at high speed. The influence of reception sensitivity deterioration can be suppressed.

  As described above, the cellular phone device is configured to be foldable including the upper casing and the lower casing coupled via the hinge portion according to the present invention, and the upper casing includes at least a reinforcing sheet metal and an upper casing. A flexible cable having a wiring pattern formed in the upper housing, the flexible cable being formed as a built-in antenna of a radio unit, the flexible cable being formed of an upper housing case metal plate and a reinforcing metal plate; The upper casing case sheet metal of the upper casing and the reinforcing sheet metal are attached with an adhesive tape, or the upper casing case sheet metal of the upper casing and the reinforcing sheet metal are integrally formed. By providing a hollow space in the integrally formed upper housing case sheet metal and the reinforcing sheet metal, and having a structure in which the hollow space is passed through the flexible cable The reinforcing sheet metal and the upper casing case sheet metal are coupled at a high frequency and act as an integral metal conductor. Even if an antenna current is passed from the wireless part to the reinforcing sheet metal used as a built-in antenna, a flexible cable that passes through this metal conductor hollow The antenna current does not flow, and it is possible to suppress the effects of high-frequency noise radiated from the flexible cable through which the control signal flows at high speed, and the influence of deterioration in reception sensitivity. A magnetic sheet such as an electromagnetic wave absorber is attached to the flexible cable. It is not necessary to attach it, and a thinner upper casing can be formed, which is useful for reducing the thickness of the mobile phone device.

  The present invention can be used for all portable devices such as a mobile phone, a portable game machine, a PDA, and a portable personal computer.

DESCRIPTION OF SYMBOLS 1 Upper housing | casing 2 Lower housing | casing 3 Hinge part 4 Display panel 5 Operation part 6 Handset 8 Display device 10 Front panel 11 Upper housing | casing case sheet metal 12 Flexible cable 13 Wave absorber 14 Reinforcement sheet metal 15 Adhesive tape 16 Battery part 17 Power supply part 18 Control unit 19 Radio unit 20 Control board unit 21 Built-in antenna

Claims (3)

A mobile phone device configured to be foldable including an upper housing and a lower housing coupled via a hinge part,
The upper housing includes a reinforcing sheet metal, an upper housing case sheet metal, and a flexible cable in which a wiring pattern is formed,
The lower housing includes a wireless unit,
The reinforcing sheet metal functions as an antenna of the radio unit,
The flexible cable is a mobile phone device that is sandwiched between the upper casing case sheet metal and the reinforcing sheet metal. 2. The mobile phone device according to claim 1, wherein the upper casing case sheet metal and the reinforcing sheet metal of the upper casing are attached with an adhesive tape. The upper casing case sheet metal and the reinforcing sheet metal are integrally configured, and a hollow space is provided between the integrally configured upper casing case sheet metal and the reinforcing sheet metal. The mobile phone device according to claim 1, wherein the mobile phone device is arranged in the space.

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