JP2008187407A - Mobile terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable terminal capable of effectively using a motion sensor. <P>SOLUTION: This portable terminal comprises: a first housing in which a main display device is formed on one face, and a sub-display device is formed on the opposite face; a second housing in which a main key input device is formed on one face; and a hinge part for connecting the first and second housings so that those housings can be folded in two with the main display device and the main key input device faced inside. The portable terminal further comprises a motion sensor part for detecting the fluctuation of the position and/or angle of the portable terminal and outputting a signal corresponding to the fluctuation. In the portable terminal, the display of the sub-display device can be controlled in accordance with the output signal of the motion sensor part in such a state that the first and second housings are folded in two. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a mobile terminal.

  One of the housing designs of mobile terminals such as mobile phones is a clamshell type (bi-fold type) in which an operation unit and a display unit can be folded in half. A portable terminal employing such a clamshell type casing has a configuration in which a portion provided with a liquid crystal display device and a portion provided with a key input device are connected to each other by a hinge so as to be opened and closed. When used, both parts are opened by the user, and when the use ends, both parts are accommodated in a closed state. A clamshell type portable terminal is usually folded in half so that the liquid crystal display device and the key input device face each other, whereby the liquid crystal display device and the key input device are protected from impact and contact. For this reason, neither the liquid crystal display device nor the key input device can be used in such a state that the terminal is folded in half.

  In such a state that the portable terminal is folded in two, in order to display the current time, the incoming call status, the incoming mail status, etc. and make it visible to the user, the sub liquid crystal display device is exposed to the outside when folded in half. A housing design is also known. For example, it is widely practiced to provide a rear liquid crystal display device on the surface (back surface) opposite to the surface on which the liquid crystal display device is provided.

On the other hand, in recent mobile terminals, an electronic compass that detects the attitude angle of the terminal using a geomagnetic sensor, and a motion sensor that detects changes in the position and angle of the terminal by combining an acceleration sensor with the geomagnetic sensor (motion control) Sensors are also being developed. A terminal that employs a motion sensor can be operated by moving or tilting the terminal. Patent Document 1 can be cited as one of such techniques disclosed.
JP 2001-272413 A

  However, in a portable terminal equipped with a liquid crystal display device, it is assumed that a GUI (Graphical User Interface) is constructed on the liquid crystal display device and operated by a key input device. The GUI on the liquid crystal display device is optimized to be easy to operate. For this reason, even if a motion sensor is mounted on such a terminal so that the GUI of the liquid crystal display device can be operated, most users use a familiar key input device as before.

  Under such circumstances, the motion sensor of the mobile terminal is only used in a limited manner in some game applications and the like, and is hardly used for other purposes. In other words, in fields other than games, there is currently no proposal for an effective method of using a motion sensor in a mobile terminal.

  An object of this invention is to provide the portable terminal which can utilize a motion sensor effectively in view of the above subjects. More specifically, an object of the present invention is to provide a clamshell type portable terminal having a rear liquid crystal capable of effectively utilizing a motion sensor.

In order to solve the above-mentioned problem, a first aspect of the present invention is a first housing in which a main display device is provided on one side and a sub display device is provided on the opposite side;
A second housing having a primary key input device on one side;
In a portable terminal provided with a hinge part that connects the first and second housings so that the main display device and the main key input device are folded inward,
A motion sensor unit that detects a change in the position and / or angle of the mobile terminal and outputs a signal corresponding to the change;
In a state in which the first and second housings are folded in half, a mobile terminal is provided that can control display of the sub display device by a signal output from the motion sensor unit.

In the first aspect of the present invention, further comprising a bi-fold state detector for detecting whether or not the first and second housings are in a bi-fold state,
When the bi-fold state detection unit detects that the first and second housings are folded in half, the display of the sub-display device can be controlled by a signal output from the motion sensor unit. And when the second folded state detecting unit detects that the folded state of the first and second housings is released, the sub display device is activated by a signal output from the motion sensor unit. The controllable state can be terminated.

  In addition, a sensor activation button for turning on / off the power of the motion sensor unit may be provided in any of the first and second casings and the hinge unit. Further, the display of the sub display device is changed from a home screen to a screen according to a signal output from the motion sensor unit, and a home button for returning the screen of the sub display device to the initial screen is provided. The first and second casings and the hinge portion can be provided.

According to a second aspect of the present invention, there is provided a portable terminal including a display device, a main key input device, and a housing having a mechanism for storing the main key input device.
It further includes a motion sensor unit that detects a change in the position and angle of the mobile terminal and outputs a signal corresponding to the change,
In a state in which the main key input device is stored in a housing, a mobile terminal is provided that can control display of the display device by a signal output from the motion sensor unit.

In a second aspect of the present invention, the apparatus further comprises a key storage state detection unit that detects whether or not the main key input device is stored in a housing.
When the key storage state detection unit detects that the main key input device is stored in a housing, the display of the sub display device can be controlled by a signal output from the motion sensor unit. Further, when the key storage state detection unit detects that the main key input device is released from the state stored in the housing, the control of the sub display device by the signal output from the motion sensor unit is terminated. be able to.

Further, a sensor activation button for turning on / off the power of the motion sensor unit may be provided on the housing. Furthermore, the display of the sub display device is to change the screen from the home screen according to the signal output from the motion sensor unit,
A home button for returning the screen of the sub display device to the initial screen can be provided on the housing.

  According to the first aspect of the present invention, the first and second housings are folded in half, and the main display device and the key input device are hidden inside, and the sub display device (for example, the rear liquid crystal device). ) Display can be controlled by the motion sensor unit, so that in the situation where the main display device and the key input device cannot be used, the display of the sub display device can be switched or scrolled using the motion sensor unit. Although the size of the sub display device is small and the amount of information that can be displayed is small, more information can be displayed by switching the screen or scrolling. In a conventional portable terminal, if the main key input device cannot be operated by folding it in half, it was not possible to input an instruction for screen switching or the like without operating an auxiliary operation button or the like provided on the side of the mobile phone. . However, in the present invention, the motion sensor unit detects the movement of the terminal or tilts the user and controls the rear liquid crystal screen, so that the display of the rear liquid crystal can be switched or scrolled very intuitively. .

  In the first aspect of the present invention, a bi-fold state detection unit for detecting that the terminal is folded in half is provided, and the rear liquid crystal is automatically controlled by the motion sensor unit while the terminal is folded in half. By making it possible, it is possible to shift to a state in which the rear liquid crystal is controlled by the motion sensor unit without performing an extra operation. On the other hand, from the viewpoint of reducing power consumption, it is desirable to provide a sensor activation button and turn on the motion sensor unit only when necessary. In addition, if the rear LCD display transitions from the initial screen, it is possible to more easily control the rear LCD display by providing a home button to return the rear LCD display to the initial screen. Can do.

  Further, the present invention is not limited to the portable terminal provided with the case structure that can be folded in two and the flat liquid crystal as in the first aspect, but as shown in the second aspect, The present invention is also effective in a portable terminal that includes a key input device and a casing having a mechanism for storing the main key input device. Examples of such a dismantling terminal include a device that slides a housing to store a keyboard, and a flip-type device.

The best mode for carrying out the present invention will be described below with reference to the drawings.
FIG. 1 is a drawing showing (a) an open state in which a terminal is opened and (b) a closed state in which the terminal is folded in half for a portable terminal 100 according to an embodiment of the present invention. 100 is a functional block diagram of 100. FIG.

  As shown in FIG. 1, the portable terminal 100 includes a first casing 101 provided with a main liquid crystal display device 102 and a second casing 105 provided with a main key input device 106, which are hinge portions. 110 is a clamshell type terminal connected in a foldable manner by 110. As shown in the figure, the main liquid crystal display device 102 provided in the first housing and the main key input device 106 in the second housing 105 face each other when the portable terminal 100 is folded in half. Is housed inside. Therefore, by folding the portable terminal 100 in half, it is possible to prevent the main liquid crystal display device 102 from being damaged or the main key input device 106 from being erroneously operated. A rear liquid crystal display device (sub liquid crystal display device) 103 is provided on the opposite side of the first casing 101 from the main liquid crystal display device 102, that is, on the side exposed to the outside when the portable terminal 100 is folded in two. Is provided.

  When the mobile terminal 100 is opened, the graphical user interface of the mobile terminal 100 is displayed on the main liquid crystal display device 102, and by operating the 0-9 numeric buttons, cursor keys, etc. of the main key display device 106, It is possible to operate the portable terminal 100 via this graphical user interface. On the other hand, when the portable terminal 100 is closed, the main liquid crystal display device 102 and the main key display device 106 cannot be used, so that various information indicating the state of the portable terminal 100 is displayed on the rear liquid crystal 103. It has become. The display on the rear liquid crystal display device 103 when the mobile terminal 100 is in the open state will be described in detail later. Further, the second casing 105 is provided with a sensor activation button 108 and a home button 109 on the side thereof.

  As shown in FIG. 2, the portable terminal 100 includes a main liquid crystal display device 102, a rear liquid crystal device 103, a control unit 121, a main key input device 106, a communication unit 122, a storage unit 123, Functional blocks such as a motion sensor unit 130, a housing state detection unit 131, and an auxiliary key input device 132 are included.

  The main liquid crystal display device 102 and the rear liquid crystal display device 103 are both liquid crystal display devices (LCDs), but the main liquid crystal display device 102 is larger in size than the rear liquid crystal display device 103, and the number of displayable colors and pixels. It has a high number of expressive power. Further, even when the power of the mobile terminal 100 is turned on, power consumption can be reduced by turning off the main liquid crystal display device 102 in a state where the mobile terminal 100 is folded in half. On the other hand, the rear liquid crystal display device 103 is configured to be turned on when the portable terminal 100 is folded in two and turned off when the portable terminal 100 is opened. As described above, in the state where the portable terminal 100 is folded in two, the main liquid crystal display device 102 is hidden by the second casing 105 and thus cannot be seen by the user.

  The control unit 121 is realized, for example, by executing predetermined software on a CPU stored in the first casing 101 or the second casing 105, and controls the operation of each functional block, thereby the mobile terminal 100. The various functions are realized. More specifically, for example, the control unit 121 displays the graphical user interface on the main liquid crystal display device 102 and changes the display of the main liquid crystal display device 102 according to the input from the main key input device 106. Further, communication is performed by controlling the communication unit 122 as necessary.

  The main key input device 106 includes numeric buttons 0 to 9, a cursor key, a power switch, and the like, and is used for inputting to the portable terminal 100 by a user operation. As described above, in the state where the portable terminal 100 is folded in two, the main key input device 106 is hidden by the first casing 101 and cannot be operated.

  The communication unit 122 is a unit for connecting the mobile terminal 100 to a mobile communication network by a predetermined communication method. The mobile unit 100 can make a call to another terminal by the communication unit 122. An incoming call from the terminal can be received. In addition, transmission / reception of various mails is also performed via the communication unit 122.

  The storage unit 123 is a unit for storing various data of the mobile terminal 100, and includes a ROM that is a non-volatile memory, a flash ROM that is rewritable while being a non-volatile memory, and a RAM that is a volatile memory. Such a storage unit 123 includes a mail storage unit 124 and an outgoing / incoming call history storage unit 125. Among them, the mail storage unit 124 is a unit for accumulating and storing the mail transmitted / received by the communication unit 122 together with the transmission / reception time, and the calling / incoming history storage unit 125 is the date when the communication unit 122 made / received the call.・ This is a part for accumulating and saving the time and communication partner history. The contents stored in the mail storage unit 124 and the call / incoming call history storage unit 125 can be read out by the control unit 121 and displayed on the main liquid crystal display device 102, and a rear liquid crystal display as will be described later. It can also be displayed on the device 103.

  The motion sensor unit 130 detects the movement of the mobile terminal 100 or tilts by detecting a change in the position and / or posture angle of the mobile terminal 100, and outputs a signal corresponding thereto to the control unit 121. To do. Such a motion sensor unit 130 may be configured by combining an acceleration sensor with a geomagnetic sensor, may be an acceleration sensor, or may use an inclination sensor. Further, the direction in which the fluctuation is detected may be three axes or two axes. A 6-axis sensor combining a triaxial geomagnetic sensor and a triaxial acceleration sensor, and a 5-axis sensor combining a triaxial geomagnetic sensor and a biaxial acceleration sensor are both motion sensor units. 130 can be used. However, depending on the type of the motion sensor unit 130, the detectable operation may be limited. Therefore, the operation for controlling the rear liquid crystal display device 103, which will be described later, may depend on the sensor used in the motion sensor unit 130. It is necessary to change according to the characteristics. The following description is based on the assumption that a known 6-axis sensor is used for the motion sensor unit 130.

  The housing state detection unit 131 detects whether the mobile terminal 100 is in a closed state folded in half or in an open state not folded in half, and outputs a signal corresponding to the detected state to the control unit 121 It is. Such a housing state detection unit 131 may be configured as a sensor that detects the angles of the first housing 101 and the second housing 105 connected to the hinge unit 110, or the first housing It is also possible to provide a concave portion and a convex portion in which the switch is built in the 101 and the second casing 105, and the switch is operated by overlapping the convex portion and the concave portion when folded in half. Moreover, it is possible to take a desired configuration without being limited to these.

  The auxiliary key input device 132 is arranged on the side of the second casing so that the first or second casing 101 or 105 does not disable the operation even if the portable terminal 100 is folded in the same manner as the main key input device 106. And includes a sensor activation button 108 for turning the motion sensor unit 130 on and off, and a home button 109 for controlling the display of the rear liquid crystal display device 103 as will be described later. These auxiliary input devices 132 also operate to output predetermined signals to the control unit 121 as in the case of the main key input device 106 described above.

Next, the operation of controlling the display content of the rear liquid crystal display device 103 by the motion sensor unit 130 with the portable terminal 100 configured as described above closed as shown in FIG. This will be described with reference to FIG.
First, when the user folds the portable terminal 100 from the open state as shown in FIG. 1A to two as shown in FIG. 1B, the casing state detection unit 131 folds the terminal into two. And a predetermined signal indicating that the terminal has been folded in half is output from the housing state detection unit 131 to the control unit 121.

  When the control unit 121 receives the predetermined signal from the housing state detection unit 131, the control unit 121 turns off the power supply of the main liquid crystal display device 102 and turns on the power supply of the rear liquid crystal display device 103. Display the screen. Further, the control unit 121 receives a signal from the motion sensor unit 130 and shifts to a state in which the screen display of the rear liquid crystal display device 103 can be controlled at this stage.

  By operating the sensor activation button 108 of the auxiliary key input device 132 in such a state, the power of the motion sensor unit 130 is turned on, and the motion sensor unit 130 detects a change in the position and / or posture angle of the mobile terminal 100. When the user performs an operation of moving, tilting, or rotating the mobile terminal 100, a signal corresponding to the operation is output from the motion sensor unit 130 to the control unit 121. Upon receiving such a signal, the control unit 121 controls the display screen of the rear liquid crystal display device 103 so as to correspond to the signal. The control of the rear liquid crystal display device 103 will be described in detail later.

  After the display screen of the rear liquid crystal display device 103 is controlled by the signal output from the motion sensor unit 130 as described above, when the sensor start button 108 of the auxiliary key input device 132 is operated again, the motion sensor unit 130 is turned off. Then, the control of the rear liquid crystal display device 103 by the motion sensor unit 130 ends.

  Then, when the portable terminal 100 that has been folded in half by the user is opened as shown in FIG. 1A, this is detected by the casing state detection unit 131, and the casing state detection unit 131 controls the control unit 121. A predetermined signal indicating that the terminal has been released from the folded state is output. Upon receiving this signal, the control unit 121 turns off the power supply of the rear liquid crystal display device 103 and turns on the power supply of the main liquid crystal display device 102 to display a predetermined screen on the main liquid crystal display device 102. At this stage, the control unit 121 receives an input from the main key input device 106 and the like, and shifts to a state in which the screen display of the rear liquid crystal display device 103 can be controlled. The same applies when the mobile terminal 100 is opened before the power of the motion sensor unit 130 is turned off.

Hereinafter, screen control of the rear liquid crystal display device 103 in the above-described operation will be described with reference to screen transition.
First, as shown in FIG. 3, the first screen control for changing the screen as shown in FIG. 4 by tilting the portable terminal 100 folded in half in the upward direction, the downward direction, the right direction, or the left direction as shown in FIG. 3. Show about.

  In the first screen control, it is assumed that the rear liquid crystal display device 103 is of a size that can display multiple lines of characters. First, on the initial screen, the number of incoming calls and mails received after folding the terminal in half is respectively shown. Display with icon (HOME). From this initial screen, when the mobile terminal 100 is tilted upward while the power of the motion sensor unit 130 is turned on, information on the incoming call date / time / timer / sender is displayed for the latest incoming call. Then, by repeating the upward tilt, as shown in screens 201 to 203 in FIG. 4, the screen is sequentially switched to a screen for displaying the next incoming call, and information on each incoming call can be viewed.

  On the other hand, when the portable terminal 100 is tilted downward, the sender / subject is displayed for the latest incoming mail. Then, by repeatedly tilting downward, as shown in the screen 211 and the screen 213 in FIG. 4, the screen is sequentially switched to a screen for displaying the next mail, and information on each mail can be viewed. Further, when the mobile terminal 100 is tilted to the right while displaying the sender / subject of a certain incoming mail, the continuation of the subject of the displayed mail and the mail text are displayed. At this time, the entire text may be displayed by scrolling the display by maintaining the tilt in the right direction.

  Further, when the home button 109 provided on the side of the second housing 105 is operated, the display is returned to the initial screen (HOME) regardless of the state of the screen at that time. Thereby, even if the screen display is in a deep hierarchy, the display on the rear liquid crystal display device 103 can be easily returned to the initial screen.

  Next, the second screen control for transitioning the screen as shown in FIG. 6 on the assumption that the size of the rear liquid crystal display device 103 is small as in the portable terminal 100 ′ shown in FIG. Will be described.

  In the second screen control, only the current time is displayed on the initial screen (HOME). From this initial screen, when the mobile terminal 100 is tilted upward with the power of the motion sensor unit 130 turned on, a screen 301 indicating the incoming mail state is displayed, and the screen 301 is displayed in the right direction with the screen 301 displayed. When tilted, a screen 302 showing information of the incoming mail is displayed. Further, when the mobile terminal 100 is tilted downward from the initial screen, a screen 304 indicating incoming call information is displayed, and when the mobile terminal 100 is tilted rightward while the screen 304 is displayed, a screen 305 indicating information related to the incoming call is displayed. Is done. Further, when the mobile terminal 100 is further tilted downward with the screen 304 displayed, a screen 306 indicating the presence / absence of pre-registered site update information is displayed, and the screen 306 is displayed in the right direction. When tilted, a screen 307 showing an abstract of site update is displayed.

  Also in the second screen control, when the home button 109 provided on the side of the second casing 105 is operated, the initial screen (HOME) is used regardless of the state of the screen at that time. Return to display.

  According to the first and second screen controls as described above, various information can be displayed using the rear liquid crystal display device 103 with a small size and a limited amount of information displayed, and the mobile phone folded in half. Various information can be accessed without opening the terminal 100. The main key input device 106 cannot be used when the clamshell type portable terminal 100 is folded in two, but in this embodiment, the motion sensor unit 130 mounted on the portable terminal 100 is used, and therefore the rear liquid crystal display device 103 is used. The screen of the rear liquid crystal display device 103 can be controlled by an intuitive operation for tilting the mobile terminal 100 while minimizing the buttons for control.

  In the present embodiment, the casing state detection unit 131 detects whether or not the mobile terminal 100 is folded in half, and if it is detected that the portable terminal 100 is folded in half, the control unit 121 detects the motion sensor. It is possible to spontaneously shift to a state where the screen of the rear liquid crystal display device 103 is controlled by the output signal of the unit 130.

  Further, in the present embodiment, the screen of the rear liquid crystal display device 103 is controlled by the motion sensor unit 130 only while the mobile terminal 100 is folded in half. The motion sensor unit 130 can be used as usual. Furthermore, since the power source of the motion sensor unit 130 is turned on by explicitly operating the sensor activation button 108, the motion sensor unit 130 operates at an unnecessary timing, and the battery of the mobile terminal 100 is consumed. Can be prevented.

The embodiment of the present invention has been described above, but the present invention is not limited to this, and it is needless to say that various improvements and modifications can be made without departing from the spirit of the present invention.
For example, although the case where the present invention is applied to a clamshell type portable terminal has been described above, the present invention can also be applied to a portable terminal that can accommodate a key input device by sliding a casing. Further, the control by the motion sensor unit is not limited to the rear liquid crystal display device, and the main liquid crystal display device 102 is moved outside by rotating the first casing 101 in the clamshell type portable terminal of the present embodiment. In the case of being configured to be foldable in an exposed state, the screen display of the main liquid crystal display device 102 can be controlled by the motion sensor unit 130 in a state of being folded in half. Furthermore, the same button may be assigned to the sensor activation button 108 and the home button 109 so that both functions can be properly used by normal operation and long press.

  Furthermore, in the above-described embodiment, it is detected whether or not the terminal is folded in half by the casing state detection unit 131. If the terminal is folded in two, the motion sensor unit 130 automatically detects the rear liquid crystal display device. Although control of the rear liquid crystal display device 103 by the motion sensor unit 130 may be started by an explicit operation of the user.

  Furthermore, the first and second screen controls in the above embodiment are merely examples, and desired screen controls can be employed. For example, in the above-described embodiment, the case where the screen is changed by the operation of tilting the mobile terminal 100 up, down, left, and right is shown, but the screen may be changed by another operation.

  According to the present invention, since the main key input device cannot be used by being folded in half or housed, the screen of a display device such as a rear liquid crystal display device is controlled using a motion sensor. Various information can be displayed on the display device by effectively using the sensor.

(A) is the state which opened the portable terminal 100 concerning embodiment of this invention, (b) is a figure which shows the state which folded the portable terminal 100 into two. 3 is a functional block diagram of the mobile terminal 100. FIG. In 1st screen control, it is a figure which shows the direction which tilts the portable terminal. It is a figure which shows the screen transition in 1st screen control. In 2nd screen control, it is a figure which shows the direction which tilts portable terminal 100 '. It is a figure which shows the screen transition in 2nd screen control.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Portable terminal, 101 ... 1st housing | casing, 102 ... Main liquid crystal display device, 103 ... Back surface liquid crystal display device, 105 ... 2nd housing | casing, 106 ... Main key input device.

Claims (10)

A first housing provided with a main display on one side and a sub-display on the opposite side;
A second housing having a primary key input device on one side;
In a portable terminal provided with a hinge part that connects the first and second housings so that the main display device and the main key input device are folded inward,
A motion sensor unit that detects a change in the position and / or angle of the mobile terminal and outputs a signal corresponding to the change;
In the state which folded the said 1st and 2nd housing | casing in two, the display of the said subdisplay apparatus can be controlled with the signal which the said motion sensor part output, The portable terminal characterized by the above-mentioned. A bi-fold state detector for detecting whether or not the first and second housings are in a double-folded state;
When the bi-fold state detection unit detects that the first and second housings are folded in half, the display of the sub display device can be controlled by a signal output from the motion sensor unit. The mobile terminal according to claim 1.   Further, when the half-fold state detection unit detects that the state where the first and second housings are folded in half is released, the sub-display device can be controlled by a signal output from the motion sensor unit. The mobile terminal according to claim 2, wherein the mobile terminal is terminated.   The sensor activation button for turning on / off the power supply of the motion sensor unit is provided in any of the first and second casings and the hinge unit. The portable terminal of any one of Claims. The display of the sub display device is to change the screen from the home screen according to the signal output from the motion sensor unit,
5. The home button for returning the screen of the sub display device to the initial screen is provided on any of the first and second casings and the hinge portion. The portable terminal of any one of Claims. In a portable terminal comprising a display device, a main key input device, and a housing having a mechanism for storing the main key input device,
It further includes a motion sensor unit that detects a change in the position and angle of the mobile terminal and outputs a signal corresponding to the change,
In a state where the main key input device is stored in a housing, the display of the display device can be controlled by a signal output from the motion sensor unit. A key storage state detection unit for detecting whether or not the main key input device is stored in a housing;
When the key storage state detection unit detects that the main key input device is stored in a housing, the display of the sub display device can be controlled by a signal output from the motion sensor unit. The mobile terminal according to claim 6.   Furthermore, when the key storage state detection unit detects that the state where the main key input device is stored in the housing is released, the control of the sub display device by the signal output from the motion sensor unit is terminated. The mobile terminal according to claim 7.   The mobile terminal according to any one of claims 6 to 8, wherein a sensor activation button for turning on / off the power of the motion sensor unit is provided on the housing. The display of the sub display device is to change the screen from the home screen according to the signal output from the motion sensor unit,
The mobile terminal according to any one of claims 6 to 9, wherein a home button for returning the screen of the sub display device to the initial screen is provided on the housing.

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