KR101427261B1 - Portable terminal - Google Patents

Abstract

The present invention provides a portable terminal including a radiation reduction unit capable of reducing the amount of radio waves radiated from an auxiliary circuit board connected to the main circuit board.

Description

[0001] PORTABLE TERMINAL [0002]

The present invention relates to a portable terminal including means for reducing a radio wave radiated from an auxiliary circuit board extending from a main circuit board.

A portable terminal is a portable electronic apparatus which is portable and has one or more functions of voice and video call function, information input / output function, and data storing function.

As the functions of the portable terminal are diversified, the portable terminal is implemented in the form of a multimedia device having complicated functions such as photographing and photographing of a moving picture, reproduction of music or video file, reception of a game, and reception of a broadcast.

In order to implement complex functions in multimedia devices, various new attempts have been made in terms of hardware or software. For example, a user interface environment is provided for a user to easily and conveniently search for or select a function.

Further, efforts have been made to mitigate noise caused by unnecessary radio wave radiation incidental to the transmission and reception of radio waves for wireless communication in order to more fully operate the terminal.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a portable terminal having a radio wave radiation abatement device of a different type from the prior art.

Another object of the present invention is to alleviate the generation of noise by radio waves which are unnecessarily radiated.

Another object of the present invention is to improve the wireless performance of the terminal by the above noise reduction.

In order to accomplish the above object, a portable terminal according to an embodiment of the present invention includes a main body, a sub circuit board, and a radiation reduction section.

The main body includes a main circuit board on which a main ground is formed. The sub circuit board extends from the main circuit board. And a sub ground formed on the sub circuit board is connected to the main ground. And the radiation reduction section extends from the sub circuit board while being connected to the sub ground, so as to reduce the radiation of the radio wave in the sub ground. Thereby, the noise due to the adoption of the sub circuit board is alleviated or eliminated by the radio wave unnecessarily radiated.

According to an aspect of the present invention, the main body may further include a display unit for outputting time information. The sub-circuit board may include at least one FPC having at least one switch for generating a signal in a pushing operation with respect to a side key disposed on a side connecting a front surface on which a display unit of the main body is mounted and a rear surface opposite to the front surface. have.

According to another aspect of the present invention, the radiation reduction portion may be an extended ground extending along a direction intersecting the extending direction of the sub circuit board, and may extend from the free end of the sub circuit board.

According to another aspect of the present invention, the free end of the extended ground may be configured to be connected to the main ground. The main circuit board may include at least one conductive shield can surrounding at least one electronic device and connected to the main ground, and the free end of the extended ground may be connected to the main ground through the shield can. The receiving can accommodating the extended ground may be formed in a groove shape in the shield can.

In the portable terminal according to the present invention configured as described above, since the radiation reduction portion is provided on the auxiliary circuit board, generation of noise by unwanted radio wave radiation in the auxiliary circuit board is mitigated or eliminated.

By mitigating or eliminating the noise, the influence of the electrical interference, such as lowering the wireless communication sensitivity of the terminal, is minimized.

Hereinafter, a portable terminal related to the present invention will be described in detail with reference to the drawings. In the present specification, the same or similar reference numerals are assigned to different embodiments in the same or similar configurations, and the description thereof is replaced with the first explanation.

1 is a perspective view of a portable terminal according to an embodiment of the present invention.

The portable terminal of the present invention includes a first body 10 and a second body 20 that is slidable along at least one direction on the first body 10. The first and second bodies 10 and 20 may collectively be referred to as bodies.

The state in which the first body 10 is disposed in a state of being overlapped with the second body 20 may be referred to as a closed configuration and the first body 10 may be referred to as a second body 20 ) May be referred to as an open configuration.

The portable terminal operates mainly in the standby mode in the closed state, but the standby mode is also released by the operation of the user. In addition, the portable terminal operates mainly in a communication mode in an open state, but may be switched to a standby mode by a user's operation or a predetermined period of time.

A casing (a casing, a housing, a cover, etc.) constituting an outer appearance of the first body 10 is formed by a front case 11 and a rear case 12. Various electronic components are embedded in the space formed by the front case 11 and the rear case 12. [ At least one intermediate case may be additionally disposed between the front case 11 and the rear case 12. [ The cases may be formed by injection molding of a synthetic resin or may be formed of a metal material such as stainless steel (STS) or titanium (Ti).

The display unit 13, the sound output unit 14, the first image input unit 15, or the first operation unit 16 may be disposed in the first body 10, specifically, the front case 11.

The display unit 13 includes a liquid crystal display (LCD) module, an OLED (Organic Light Emitting Diode) module, and the like that visually express information. The display unit 13 may further include a touch screen to enable information input by a user's touch.

The sound output unit 14 may be implemented in the form of a receiver or a speaker. The first image input unit 15 may be implemented as a camera module for capturing an image or a moving image of a user.

The first operation unit 16 receives a command for controlling the operation of the portable terminal according to an exemplary embodiment of the present invention.

The front case 21 and the rear case 22 can form the case of the second body 20 as in the case of the first body 10.

The second operation unit 23 may be disposed on the front surface of the second body 20, specifically, the front case 21. [ The third operating unit 24, the first sound input unit 25, and the interface 26 may be disposed in at least one of the front case 21 and the rear case 22. [

The first to third operating portions 16, 23, 24 may be collectively referred to as a manipulating portion and may be employed in any manner as long as the user operates in a tactile manner.

For example, the operation unit may be implemented as a dome switch or a touch screen or a touch pad capable of receiving commands or information by a push or touch operation of a user, or may be a wheel, a jog type, a joystick, Or the like.

In terms of functions, the first operation unit 16 is for inputting commands such as start, end, and scroll, and the second operation unit 23 is for inputting numbers, letters, symbols, and the like. The third operation unit 24 may operate as a hot-key for performing a special function such as activation of the first image input unit 15. [

The first sound input unit 25 may be implemented in the form of a microphone, for example, to receive a user's voice, other sounds, and the like.

The interface 26 is a path through which the portable terminal related to the present invention can exchange data with an external device. For example, the interface 26 may be a wired or wireless connection terminal for connecting to an earphone, a port for short range communication (for example, an IrDA port, a Bluetooth port, a wireless LAN port a wireless Lan port), or power supply terminals for supplying power to the portable terminal. The interface 26 may be a card socket that accepts an external card such as a subscriber identification module (SIM) or a user identity module (UIM), a memory card for information storage, and the like.

A power supply unit 27 for supplying power to the portable terminal is mounted on the rear case 22 side. The power supply unit 27 may be detachably coupled to a rechargeable battery for charging, for example.

2 is a rear perspective view of the portable terminal of FIG.

Referring to FIG. 2, a second image input unit 28 may be additionally mounted on the rear surface of the rear case 22 of the second body 20. The second image input unit 28 may have a photographing direction substantially opposite to that of the first image input unit 15 (see FIG. 1), and may be a camera having different pixels from the first image input unit.

For example, the first image input unit 15 has low pixels so that it is easy to capture a face of a user in the case of a video call or the like and send it to the other party. The second image input unit 28 photographs a general object It is preferable to have a high pixel because it is often not transmitted.

A flash 29 and a mirror 30 are further disposed adjacent to the second image input unit 28. The flash 29 shines light toward the subject when the subject is photographed by the second image input unit 28. The mirror unit 30 allows the user to illuminate the user's own face or the like when the user intends to take a picture of himself / herself (self-photographing) using the second image input unit 28.

The lower cover 22 may further be provided with a second sound output section 31. [ The second sound output unit 31 may implement a stereo function together with the first sound output unit 14 (see FIG. 1), and may be used for talking in a speakerphone mode.

In addition, an antenna 32 for receiving broadcasting signals may be disposed on one side of the lower cover 22, in addition to an antenna for communication. The antenna 32 may be installed to be detachable from the second body 20.

A portion of the slide module 33 that slidably couples the first body 10 and the second body 20 is disposed on the rear case 12 side of the first body 10. [ The other part of the slide module 33 is disposed on the side of the front case 21 of the second body 20 and may be in a form that is not exposed to the outside as in this figure.

In the above description, the second image input unit 28 and the like are disposed in the second body 20, but the present invention is not limited thereto. At least one of the configurations 28 to 32 described as being arranged in the lower cover 22, such as the second image input unit 28, may be mounted on the first body 10, mainly the lower cover 12, It is also possible to mount it. In such a case, there is an advantage that the configuration (s) arranged in the lower cover 12 in the closed state is protected by the second body 20. Further, the first image input unit 15 may be rotatably formed so that the second image input unit 28 can be photographed up to the second image input unit 28 even if the second image input unit 28 is not separately provided.

3 is a perspective view showing a state in which the main circuit board 100 is mounted on the front case 21 of the second body 20 of FIG. 1, FIG. 4 is a perspective view of the main circuit board 100, (200) according to the present invention.

Referring to FIG. 3, various electronic elements for operating the main body are mounted on the main circuit board 100. A plurality of elements, such as a central processing unit, such as the control unit 40 (FIG. 6), or a memory, a wireless communication module, etc., among the electronic elements are surrounded by a shield can 400. The shield can 400 is connected to the main ground 110 formed on the main circuit board 100 to enclose the elements so as to minimize noise generated by the elements.

Referring to FIG. 4, the sub circuit board 200 connected to the main circuit board 100 includes a subground 210. The sub circuit board 200 may be an FPCB formed of a soft material than the main circuit board 100.

Electrical connection between the main circuit board 100 and the sub circuit board 200 is achieved through connection between the terminal portions 120 and 220 formed in the main circuit board 100 and the sub circuit board 200, respectively. The switch 230 provided on the sub circuit board 200 in correspondence with the third operation unit 24 is connected to the main circuit board 100 in a signal exchangeable manner. The switch 230 may be a side key or a dome switch that is pressed by the pressing operation of the third operating portion 24 to generate a signal. The subground 210 is also connected to the main ground 110 via the connection.

The sub circuit board 200 is provided with a radiation reduction section 300 for reducing noise due to unnecessary radiation of radio waves. The radiation reduction unit 300 may be an extended ground 310 that is connected to the subground 210. The extended ground 310 may be formed in the form of a ground (conductive material) having an FPC ratio as in the case of the sub circuit board 200.

The extending direction of the extended ground 310 may be a direction intersecting the extending direction of the sub circuit board 200. 4 illustrates a case in which the extended ground 310 extends in a direction perpendicular to the free end of the sub circuit board 200. As shown in FIG.

Referring to Tables 1 and 2, since the radiating reduction unit 300 according to the embodiment of the present invention is provided, the wireless communication sensitivity in the ch500, which is a null channel of the DCN band, (DB) from -88.3 (dB) to -91.3 (dB).

No. DCN ch100 ch500 ch1000 One -93.0 -89.0 -93.5 2 -93.0 -88.0 -93.5 3 -93.0 -89.0 -93.5 4 -93.5 -88.0 -93.5 5 -93.0 -89.0 -93.0 Avg. -93.1 -88.6 -93.4

No. DCN ch100 ch500 ch1000 One -93.0 -91.0 -93.5 2 -93.0 -90.5 -93.5 3 -93.0 -92.5 -93.5 4 -93.5 -91.5 -93.5 5 -93.0 -91.0 -93.0 Avg. -93.1 -91.3 -93.4

Referring again to FIG. 3, the free end of the extended ground 310 may be connected to the main ground 110 of the main circuit board 100. The connection may be via a conductive tape or the like, and the above sensitivity improvement effect is further increased by the connection.

Since the shield can 400 is mounted on the main circuit board 100, the extended ground 310 can be connected to the main ground 110 by connecting the extended ground 310 to the shield can 400 .

As the extended ground 310 is connected to the shield can 400, it is possible to prevent the free end of the extended ground 310 from interfering with the engagement of the front case 21 and the rear case 22 (Fig. 1) There is also an advantage.

5 is a perspective view showing a modification of the shield can 400 of FIG.

Referring to FIG. 5, the shield can 400 may have a receiving portion 410 extending in a recessed shape.

The extended ground 310 may be received in the receiving portion 410 in the process of coupling the extended ground 310 to the shield can 400. [

With this arrangement, there is an advantage that the overall thickness of the terminal can be prevented or mitigated by further providing the extended ground 310 and connecting it to the shield can 400. [

The portable terminal according to an embodiment of the present invention is not limited to the slide type shown in Fig. 1 but can be applied to various structures such as a bar type, a folder type, and a swing type.

6 is a block diagram of a portable terminal according to the present invention.

6, a portable terminal according to an exemplary embodiment of the present invention includes a wireless communication module 41, operation units 16, 23 and 24, image input units 15 and 28, an acoustic input unit 25, a display unit 13, sound output units 14 and 31, a sensing unit 46, an interface 26, a broadcast receiving module 45, a memory 44, a power supply unit 27 and a control unit 40.

The control unit 40 typically controls the overall operation of the portable terminal. For example, voice communication, data communication, video communication, and the like. In addition to the normal function control, the control unit 40 controls the operation of the portable terminal related to the present invention.

The wireless communication module 41 transmits / receives a wireless signal to / from a mobile communication base station through an antenna. A transmission unit 42 for transmitting and receiving voice data, character data, video data, and control data under the control of the control unit 40 and for modulating and transmitting a signal to be transmitted for this purpose; 43).

The operation units 16, 23, and 24 are configured as shown in FIG. 1, and provide the control unit 40 with key input data that the user inputs for controlling the operation of the terminal. The operation units 16, 23, and 24 are composed of a dome switch, a touch pad (static / static), a jog wheel, a jog switch, and the like.

The image input units 15 and 28 process image frames such as still images or moving images obtained by the image sensor in the video communication mode or the photographing mode. Then, the processed image frame is converted into image data that can be displayed on the display unit 13 and output to the display unit 13. [ The image frames processed by the image input units 15 and 28 are stored in the memory 44 under the control of the control unit 40 or transmitted to the outside through the wireless transmission / reception unit 41.

The sound input unit 25 receives an external sound signal by a microphone in a communication mode, a recording mode, a voice recognition mode, or the like, and processes it as electrical voice data. The processed voice data is converted into a form that can be transmitted to the mobile communication base station through the wireless communication module 41 in the communication mode, and is output to the wireless communication module. In the case of the recording mode, the processed voice data is output to be stored in the memory 44. The sound input unit 25 may be implemented with various noise reduction algorithms for eliminating noise generated in the process of receiving an external sound signal.

The display unit 13 displays and outputs information processed in the portable terminal. For example, when the portable terminal is in the call mode, the control unit 40 displays and outputs a UI (User Interface) or GUI (Graphic User Interface) related to the call. When the portable terminal is in the video communication mode or the photographing mode, the control unit 40 displays and displays the photographed image, the UI, and the GUI. When the display unit 13 includes a touch screen, the display unit 13 is used as an input device in addition to the output device.

The sound output units 14 and 31 receive sound data received from the wireless communication module 41 under the control of the control unit 40 in the call signal reception mode, the communication mode or the recording mode, the voice recognition mode, And outputs the converted sound data to the outside. Also, the sound output units 14 and 31 output sound signals related to functions (e.g., call signal reception sound, message reception sound, etc.) performed in the portable terminal. These sound output units 14 and 31 include a speaker, a receiver, a buzzer, and the like.

The sensing unit 46 senses the current state of the portable terminal, such as the opening / closing state of the portable terminal, the position of the portable terminal, whether or not the user touches the portable terminal, and generates a sensing signal for controlling the operation of the portable terminal. For example, if the portable terminal is in the form of a slide phone, it senses whether the slide phone is opened or closed and outputs the sensing result to the controller 40 so that the operation of the terminal is controlled. And a sensing function related to whether or not the power supply unit 27 is powered on, whether the interface 26 is coupled to an external device, and the like.

The interface 26 may be connected to any external device such as a wired / wireless headset, an external charger, a wired / wireless data port, a card socket (for example, a memory card, a SIM / UIM card) It serves as an interface with the device. The interface 26 receives data from an external device or receives power from the external device, transfers the data to each component in the portable terminal, or transmits data in the portable terminal to an external device.

The memory 44 may store a program for processing and controlling the control unit 40 and may have a function for temporarily storing input / output data (e.g., a phone book, a message, a still image, . In addition, the memory 44 stores a program for controlling the operation of the portable terminal related to the present invention. The memory 44 includes the concept of a generally known hard disk, a card type memory (e.g., SD or XD memory), a flash memory, a RAM, a ROM, and the like.

The broadcast receiving module 45 receives broadcast signals transmitted through satellite or terrestrial waves and converts the received broadcast signals into broadcast data types that can be output to the sound output units 14 and 31 and the display unit 13 and outputs them to the control unit 40 . In addition, the broadcast receiving module 45 receives additional data (e.g., EPG (Electric Program Guide), channel list, etc.) related to broadcasting. The broadcast data and the additional data converted by the broadcast receiving module 45 may be stored in the memory 44. [

The power supply unit 27 receives external power and internal power under the control of the control unit 40 and supplies power necessary for operation of the respective components.

The above-described portable terminal is not limited to the configuration and method of the embodiments described above, but all or some of the embodiments may be selectively combined so that various modifications may be made to the embodiments.

1 is a front perspective view of a mobile terminal according to an embodiment of the present invention;

2 is a rear perspective view of a portable terminal according to an embodiment of the present invention;

FIG. 3 is a perspective view showing a main circuit board mounted on a front case of the second body of FIG. 1;

FIG. 4 is an exploded perspective view showing the main circuit board and the sub circuit board of FIG. 3 separated; FIG.

FIG. 5 is a perspective view showing a modification of the shield can of FIG. 4; FIG.

6 is a block diagram of a mobile terminal according to an embodiment of the present invention;

Claims (7)

A main body having a main circuit board on which a main ground is formed; A sub circuit board electrically connected to the main circuit board and having a subground connected to the main ground; And And a radiation reduction portion extending from the sub circuit board while being connected to the sub ground, the radiation reduction portion being configured to reduce the radiation of the radio wave in the sub ground, Wherein the sub circuit board includes at least one switch for generating a signal in a pushing operation with respect to a side key disposed on a side connecting a front surface of the main body and a back surface opposite to the front surface, Wherein the radiation reduction portion includes an extended ground extending along a direction intersecting the extending direction of the sub circuit board, Wherein at least one conductive shield can is disposed on the main circuit board and connected to the main ground, the free end of the extended ground being connected to the main ground via the shield can, Wherein a receiving portion for receiving the extended ground is formed in a recess. delete The method according to claim 1, Wherein the extended ground extends from a free end of the sub circuit board. The method according to claim 1, And the free end of the extended ground is connected to the main ground. delete delete delete

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