KR20170047060A - Mobile terminal for performing a power cutoff and controlling method thereof - Google Patents

Abstract

The present invention relates to a mobile terminal for cutting off power and a control method thereof. The mobile terminal includes: a touch sensor which senses a change value of capacitance for each cell in response to a touch input; a display unit which receives the input of a user by the touch sensor; and a control unit which determines a region of the display unit where is stained with a specific substance based on the change value of capacitance and cuts off power supplied from a power supply unit to an internal circuit when the region is equal to or larger than a predetermined area with regard to the whole area. Different control methods can be provided according to the region and degree of water detected on the surface of the display unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a mobile terminal and a control method thereof,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile terminal for performing touch control and power-off, and a touch control method and power control method therefor.

A terminal can be divided into a mobile terminal (mobile / portable terminal) and a stationary terminal according to whether the terminal can be moved. The mobile terminal can be divided into a handheld terminal and a vehicle mounted terminal according to whether the user can directly carry the mobile terminal.

The functions of mobile terminals are diversified. For example, there are data and voice communication, photographing and video shooting through a camera, voice recording, music file playback through a speaker system, and outputting an image or video on a display unit. Some terminals are equipped with an electronic game play function or a multimedia player function. In particular, modern mobile terminals can receive multicast signals that provide visual content such as broadcast and video or television programs.

Such a terminal has various functions, for example, in the form of a multimedia device having multiple functions such as photographing and photographing of a moving picture, reproduction of a music or video file, reception of a game and broadcasting, etc. .

In order to support and enhance the functionality of such terminals, it may be considered to improve the structural and / or software parts of the terminal. Such terminals are required to provide a waterproof function or to cut off power from the water in recent years.

In this regard, there has been a problem in that it is limited to a hardware structure of a terminal that provides a waterproof function. Therefore, when a crack or the like is generated in a part of the terminal, the waterproof function is deteriorated.

In addition, even when the waterproof function is provided, the power of the terminal remains in the ON state, which may cause a failure in the internal circuit components.

The present invention is directed to solving the above-mentioned problems and other problems. Another object is to determine the region where water is detected based on the change in capacitance value.

According to an aspect of the present invention, there is provided a mobile terminal including: a touch sensor that senses a change value of a capacitance for each cell in response to a touch input; A display unit receiving a user's input by the touch sensor; And a control unit for determining a region of the display unit on which the specific substance is embedded based on the change value of the capacitance and for shutting off power supplied to the internal circuit from the power supply unit when the region is larger than a predetermined area, Different control methods can be provided depending on the area and degree of the water detected on the surface of the display unit.

According to an embodiment, the control unit may include an application processor for generating a power-off control signal for shutting off the power supply based on a change value of the capacitance from the touch sensor.

According to one embodiment, the control unit receives the power-off control signal from the application processor, and transmits a battery-out signal generated based on the received power-off signal to a power management integrated circuit (PMIC: Power Management Integrated Chip).

According to one embodiment, when the application processor receives a battery IN signal from the power management integrated circuit indicating that the battery is connected to the power management integrated circuit, the application processor determines, based on the change value of the capacitance, A power shutdown control signal for shutting off the power source can be generated.

According to an embodiment, the control unit may generate a notification message to remove water when the area is equal to or larger than a predetermined first threshold value in which water is spilled on the surface of the display unit, and transmits the notification message to the display unit And when the area is equal to or larger than a predetermined second threshold value in which the display part falls into the water, the power can be cut off.

According to an embodiment, the controller may turn off the touch sensor of the area where water is detected when the area is equal to or greater than the first threshold value and equal to or less than the second threshold value.

According to an aspect of the present invention, there is provided a method for powering off a mobile terminal, the method comprising: sensing a capacitance change value for each cell of a touch sensor in response to a touch input; A water detection area determining step of determining an area in which a specific material is deposited on the display unit based on a change value of a capacitance for each cell; And a power cutoff step of cutting off the power supplied from the power supply unit to the internal circuit when the area is larger than the predetermined area.

Effects of the mobile terminal and the control method according to the present invention will be described as follows.

According to at least one of the embodiments of the present invention, it is possible to provide different control methods depending on the area and degree of water detected on the surface of the display unit.

Further, according to at least one of the embodiments of the present invention, there is an advantage in blocking power supply from the battery when water is detected in a certain region or more.

1A to 1C are block diagrams for explaining a mobile terminal according to the present invention, and FIGS. 1B and 1C are conceptual diagrams showing an example of a mobile terminal according to the present invention in different directions.
FIG. 2 is a block diagram of a mobile terminal that performs power shutdown according to the present invention.
Fig. 3 shows the magnitude of the droplet and the value of the change in capacitance with respect to the region (center or periphery) of the droplet, according to an embodiment of the present invention.
4 shows the operating principle of the self-capacitance method and a state in which the touch sensor is attached to the rear surface of the display portion.
Fig. 5 shows the principle of operation of the mutual capacitance type and a state in which the touch sensor is attached to the rear surface of the display portion.
FIG. 6 is a block diagram of a controller for performing power shutdown according to an embodiment of the present invention. Referring to FIG.
7 is a flowchart of a method of performing touch control and power off according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or similar elements, and redundant description thereof will be omitted. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. , ≪ / RTI > equivalents, and alternatives.

Terms including ordinals, such as first, second, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

The mobile terminal described in this specification includes a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a navigation device, a slate PC A tablet PC, an ultrabook, a wearable device such as a smartwatch, a smart glass, and a head mounted display (HMD). have.

However, it will be appreciated by those skilled in the art that the configuration according to the embodiments described herein may be applied to fixed terminals such as a digital TV, a desktop computer, a digital signage, and the like, will be.

1A to 1C are block diagrams for explaining a mobile terminal according to the present invention, and FIGS. 1B and 1C are conceptual diagrams showing an example of a mobile terminal according to the present invention in different directions.

The mobile terminal 100 includes a wireless communication unit 110, an input unit 120, a sensing unit 140, an output unit 150, an interface unit 160, a memory 170, a control unit 180, ), And the like. The components shown in FIG. 1A are not essential for implementing a mobile terminal, so that the mobile terminal described herein may have more or fewer components than the components listed above.

The wireless communication unit 110 may be connected between the mobile terminal 100 and the wireless communication system or between the mobile terminal 100 and another mobile terminal 100 or between the mobile terminal 100 and the external server 100. [ Lt; RTI ID = 0.0 > wireless < / RTI > In addition, the wireless communication unit 110 may include one or more modules for connecting the mobile terminal 100 to one or more networks.

The wireless communication unit 110 may include at least one of a broadcast receiving module 111, a mobile communication module 112, a wireless Internet module 113, a short distance communication module 114, and a location information module 115 .

The input unit 120 includes a camera 121 or an image input unit for inputting a video signal, a microphone 122 for inputting an audio signal, an audio input unit, a user input unit 123 for receiving information from a user A touch key, a mechanical key, and the like). The voice data or image data collected by the input unit 120 may be analyzed and processed by a user's control command.

The sensing unit 140 may include at least one sensor for sensing at least one of information in the mobile terminal, surrounding environment information surrounding the mobile terminal, and user information. For example, the sensing unit 140 may include a proximity sensor 141, an illumination sensor 142, a touch sensor, an acceleration sensor, a magnetic sensor, A G-sensor, a gyroscope sensor, a motion sensor, an RGB sensor, an infrared sensor, a finger scan sensor, an ultrasonic sensor, A microphone 226, a battery gauge, an environmental sensor (for example, a barometer, a hygrometer, a thermometer, a radiation detection sensor, A thermal sensor, a gas sensor, etc.), a chemical sensor (e.g., an electronic nose, a healthcare sensor, a biometric sensor, etc.). Meanwhile, the mobile terminal disclosed in the present specification can combine and utilize information sensed by at least two of the sensors.

The output unit 150 includes at least one of a display unit 151, an acoustic output unit 152, a haptic tip module 153, and a light output unit 154 to generate an output related to visual, auditory, can do. The display unit 151 may have a mutual layer structure with the touch sensor or may be integrally formed to realize a touch screen. The touch screen may function as a user input unit 123 that provides an input interface between the mobile terminal 100 and a user and may provide an output interface between the mobile terminal 100 and a user.

The interface unit 160 serves as a path to various types of external devices connected to the mobile terminal 100. The interface unit 160 is connected to a device having a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, And may include at least one of a port, an audio I / O port, a video I / O port, and an earphone port. In the mobile terminal 100, corresponding to the connection of the external device to the interface unit 160, it is possible to perform appropriate control related to the connected external device.

In addition, the memory 170 stores data supporting various functions of the mobile terminal 100. The memory 170 may store a plurality of application programs or applications running on the mobile terminal 100, data for operation of the mobile terminal 100, and commands. At least some of these applications may be downloaded from an external server via wireless communication. Also, at least a part of these application programs may exist on the mobile terminal 100 from the time of shipment for the basic functions (e.g., telephone call receiving function, message receiving function, and calling function) of the mobile terminal 100. Meanwhile, the application program may be stored in the memory 170, installed on the mobile terminal 100, and may be operated by the control unit 180 to perform the operation (or function) of the mobile terminal.

In addition to the operations related to the application program, the control unit 180 typically controls the overall operation of the mobile terminal 100. The control unit 180 may process or process signals, data, information, and the like input or output through the above-mentioned components, or may drive an application program stored in the memory 170 to provide or process appropriate information or functions to the user.

In addition, the controller 180 may control at least some of the components illustrated in FIG. 1A in order to drive an application program stored in the memory 170. FIG. In addition, the controller 180 may operate at least two of the components included in the mobile terminal 100 in combination with each other for driving the application program.

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power to the components included in the mobile terminal 100. The power supply unit 190 includes a battery, which may be an internal battery or a replaceable battery.

At least some of the components may operate in cooperation with one another to implement a method of operation, control, or control of a mobile terminal according to various embodiments described below. In addition, the operation, control, or control method of the mobile terminal may be implemented on the mobile terminal by driving at least one application program stored in the memory 170. [

Hereinafter, the various components of the mobile terminal 100 will be described in detail with reference to FIG. 1A.

The sensing unit 140 senses at least one of information in the mobile terminal, surrounding environment information surrounding the mobile terminal, and user information, and generates a corresponding sensing signal. The control unit 180 may control the driving or operation of the mobile terminal 100 or may perform data processing, function or operation related to the application program installed in the mobile terminal 100 based on the sensing signal. Representative sensors among various sensors that may be included in the sensing unit 140 will be described in more detail.

First, the proximity sensor 141 refers to a sensor that detects the presence of an object approaching a predetermined detection surface, or the presence of an object in the vicinity of the detection surface, without mechanical contact by using electromagnetic force or infrared rays. The proximity sensor 141 may be disposed in the inner area of the mobile terminal or in proximity to the touch screen, which is covered by the touch screen.

Examples of the proximity sensor 141 include a transmission type photoelectric sensor, a direct reflection type photoelectric sensor, a mirror reflection type photoelectric sensor, a high frequency oscillation type proximity sensor, a capacitive proximity sensor, a magnetic proximity sensor, and an infrared proximity sensor. In the case where the touch screen is electrostatic, the proximity sensor 141 can be configured to detect the proximity of the object with a change of the electric field along the proximity of the object having conductivity. In this case, the touch screen (or touch sensor) itself may be classified as a proximity sensor.

On the other hand, for convenience of explanation, the act of recognizing that the object is located on the touch screen in proximity with no object touching the touch screen is referred to as "proximity touch & The act of actually touching an object on the screen is called a "contact touch. &Quot; The position at which the object is closely touched on the touch screen means a position where the object corresponds to the touch screen vertically when the object is touched. The proximity sensor 141 can detect a proximity touch and a proximity touch pattern (e.g., a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, have. Meanwhile, the control unit 180 processes data (or information) corresponding to the proximity touch operation and the proximity touch pattern sensed through the proximity sensor 141 as described above, and further provides visual information corresponding to the processed data It can be output on the touch screen. Furthermore, the control unit 180 can control the mobile terminal 100 such that different operations or data (or information) are processed according to whether the touch to the same point on the touch screen is a proximity touch or a touch touch .

The touch sensor uses a touch (or touch input) applied to the touch screen (or the display unit 151) by using at least one of various touch methods such as a resistance film type, a capacitive type, an infrared type, an ultrasonic type, Detection.

For example, the touch sensor may be configured to convert a change in a pressure applied to a specific portion of the touch screen or a capacitance generated in a specific portion to an electrical input signal. The touch sensor may be configured to detect a position, an area, a pressure at the time of touch, a capacitance at the time of touch, and the like where a touch object touching the touch screen is touched on the touch sensor. Here, the touch object may be a finger, a touch pen, a stylus pen, a pointer, or the like as an object to which a touch is applied to the touch sensor.

Thus, when there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller. The touch controller processes the signal (s) and transmits the corresponding data to the controller 180. Thus, the control unit 180 can know which area of the display unit 151 is touched or the like. Here, the touch controller may be a separate component from the control unit 180, and may be the control unit 180 itself.

On the other hand, the control unit 180 may perform different controls or perform the same control according to the type of the touch object touching the touch screen (or a touch key provided on the touch screen). Whether to perform different controls or to perform the same control according to the type of the touch object may be determined according to the current state of the mobile terminal 100 or an application program being executed.

On the other hand, the touch sensors and the proximity sensors discussed above can be used independently or in combination to provide a short touch (touch), a long touch, a multi touch, a drag touch ), Flick touch, pinch-in touch, pinch-out touch, swipe touch, hovering touch, and the like. Touch can be sensed.

The ultrasonic sensor can recognize the position information of the object to be sensed by using ultrasonic waves. Meanwhile, the controller 180 can calculate the position of the wave generating source through the information sensed by the optical sensor and the plurality of ultrasonic sensors. The position of the wave source can be calculated using the fact that the light is much faster than the ultrasonic wave, that is, the time when the light reaches the optical sensor is much faster than the time the ultrasonic wave reaches the ultrasonic sensor. More specifically, the position of the wave generating source can be calculated using the time difference with the time when the ultrasonic wave reaches the reference signal.

The camera 121 includes at least one of a camera sensor (for example, a CCD, a CMOS, etc.), a photo sensor (or an image sensor), and a laser sensor.

The camera 121 and the laser sensor may be combined with each other to sense a touch of the sensing object with respect to the three-dimensional stereoscopic image. The photosensor can be laminated to the display element, which is adapted to scan the movement of the object to be detected proximate to the touch screen. More specifically, the photosensor mounts photo diodes and TRs (Transistors) in a row / column and scans the contents loaded on the photosensor using an electrical signal that varies according to the amount of light applied to the photo diode. That is, the photo sensor performs coordinate calculation of the object to be sensed according to the amount of change of light, and position information of the object to be sensed can be obtained through the calculation.

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, the display unit 151 may display execution screen information of an application program driven by the mobile terminal 100 or UI (User Interface) and GUI (Graphic User Interface) information according to the execution screen information .

Also, the display unit 151 may be configured as a stereoscopic display unit for displaying a stereoscopic image.

In the stereoscopic display unit, a three-dimensional display system such as a stereoscopic system (glasses system), an autostereoscopic system (no-glasses system), and a projection system (holographic system) can be applied.

The sound output unit 152 may output audio data received from the wireless communication unit 110 or stored in the memory 170 in a call signal reception mode, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, The sound output unit 152 also outputs sound signals related to functions (e.g., call signal reception sound, message reception sound, etc.) performed in the mobile terminal 100. [ The audio output unit 152 may include a receiver, a speaker, a buzzer, and the like.

The haptic module 153 generates various tactile effects that the user can feel. A typical example of the haptic effect generated by the haptic module 153 may be vibration. The intensity and pattern of the vibration generated in the haptic module 153 can be controlled by the user's selection or the setting of the control unit. For example, the haptic module 153 may synthesize and output different vibrations or sequentially output the vibrations.

In addition to vibration, the haptic module 153 may be configured to perform various functions such as a pin arrangement vertically moving with respect to the contact skin surface, a spraying force or suction force of the air through the injection port or the suction port, a touch on the skin surface, And various tactile effects such as an effect of reproducing a cold sensation using an endothermic or exothermic element can be generated.

The haptic module 153 can transmit the tactile effect through the direct contact, and the tactile effect can be felt by the user through the muscles of the finger or arm. The haptic module 153 may include two or more haptic modules 153 according to the configuration of the mobile terminal 100.

The light output unit 154 outputs a signal for notifying the occurrence of an event using the light of the light source of the mobile terminal 100. Examples of events that occur in the mobile terminal 100 may include message reception, call signal reception, missed call, alarm, schedule notification, email reception, information reception through an application, and the like.

The signal output from the light output unit 154 is implemented as the mobile terminal emits light of a single color or a plurality of colors to the front or rear surface. The signal output may be terminated by the mobile terminal detecting the event confirmation of the user.

The interface unit 160 serves as a path for communication with all external devices connected to the mobile terminal 100. The interface unit 160 receives data from an external device or supplies power to each component in the mobile terminal 100 or transmits data in the mobile terminal 100 to an external device. For example, a port for connecting a device equipped with a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, an audio I / O port, a video I / O port, an earphone port, and the like may be included in the interface unit 160.

The identification module is a chip for storing various information for authenticating the use right of the mobile terminal 100 and includes a user identification module (UIM), a subscriber identity module (SIM) A universal subscriber identity module (USIM), and the like. Devices with identification modules (hereinafter referred to as "identification devices") can be manufactured in a smart card format. Accordingly, the identification device can be connected to the terminal 100 through the interface unit 160. [

The interface unit 160 may be a path through which power from the cradle is supplied to the mobile terminal 100 when the mobile terminal 100 is connected to an external cradle, And various command signals may be transmitted to the mobile terminal 100. The various command signals or the power source input from the cradle may be operated as a signal for recognizing that the mobile terminal 100 is correctly mounted on the cradle.

The memory 170 may store a program for the operation of the controller 180 and temporarily store input / output data (e.g., a phone book, a message, a still image, a moving picture, etc.). The memory 170 may store data on vibration and sound of various patterns outputted when a touch is input on the touch screen.

The memory 170 may be a flash memory type, a hard disk type, a solid state disk type, an SDD type (Silicon Disk Drive type), a multimedia card micro type ), Card type memory (e.g., SD or XD memory), random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read memory, a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, and / or an optical disk. The mobile terminal 100 may operate in association with a web storage that performs the storage function of the memory 170 on the Internet.

Meanwhile, as described above, the control unit 180 controls the operations related to the application program and the general operation of the mobile terminal 100. [ For example, when the state of the mobile terminal meets a set condition, the control unit 180 can execute or release a lock state for restricting input of a user's control command to applications.

In addition, the control unit 180 performs control and processing related to voice communication, data communication, video call, or the like, or performs pattern recognition processing to recognize handwriting input or drawing input performed on the touch screen as characters and images, respectively . Further, the controller 180 may control any one or a plurality of the above-described components in order to implement various embodiments described below on the mobile terminal 100 according to the present invention.

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power necessary for operation of the respective components. The power supply unit 190 includes a battery, the battery may be an internal battery configured to be chargeable, and may be detachably coupled to the terminal body for charging or the like.

In addition, the power supply unit 190 may include a connection port, and the connection port may be configured as an example of an interface 160 through which an external charger for supplying power for charging the battery is electrically connected.

As another example, the power supply unit 190 may be configured to charge the battery in a wireless manner without using the connection port. In this case, the power supply unit 190 may use at least one of an inductive coupling method based on a magnetic induction phenomenon from an external wireless power transmission apparatus and a magnetic resonance coupling method based on an electromagnetic resonance phenomenon Power can be delivered.

At least some of the components may operate in cooperation with one another to implement a method of operation, control, or control of a mobile terminal according to various embodiments described below. In addition, the operation, control, or control method of the mobile terminal may be implemented on the mobile terminal by driving at least one application program stored in the memory 170. [

Referring to FIGS. 1B and 1C, the disclosed mobile terminal 100 includes a bar-shaped terminal body. However, the present invention is not limited thereto and can be applied to various structures such as a folder type, a flip type, a slide type, a swing type, and a swivel type in which a watch type, a clip type, a glass type or two or more bodies are relatively movably coupled . A description of a particular type of mobile terminal, although relevant to a particular type of mobile terminal, is generally applicable to other types of mobile terminals.

Here, the terminal body can be understood as a concept of referring to the mobile terminal 100 as at least one aggregate.

The mobile terminal 100 includes a case (for example, a frame, a housing, a cover, and the like) that forms an appearance. As shown, the mobile terminal 100 may include a front case 101 and a rear case 102. Various electronic components are disposed in the inner space formed by the combination of the front case 101 and the rear case 102. At least one middle case may be additionally disposed between the front case 101 and the rear case 102.

A display unit 151 is disposed on a front surface of the terminal body to output information. The window 151a of the display unit 151 may be mounted on the front case 101 to form a front surface of the terminal body together with the front case 101. [

In some cases, electronic components may also be mounted on the rear case 102. Electronic parts that can be mounted on the rear case 102 include detachable batteries, an identification module, a memory card, and the like. In this case, the rear case 103 for covering the mounted electronic component can be detachably coupled to the rear case 102. [ Therefore, when the backside case 103 is separated from the rear case 102, the electronic parts mounted on the rear case 102 are exposed to the outside.

As shown in the figure, when the rear case 103 is coupled to the rear case 102, a side portion of the rear case 102 can be exposed. In some cases, the rear case 102 may be completely covered by the rear case 103 during the engagement. Meanwhile, the rear case 103 may be provided with an opening for exposing the camera 121b and the sound output unit 152b to the outside.

These cases 101, 102, and 103 may be formed by injection molding of synthetic resin or may be formed of metal such as stainless steel (STS), aluminum (Al), titanium (Ti), or the like.

The mobile terminal 100 may be configured such that one case provides the internal space, unlike the above example in which a plurality of cases provide an internal space for accommodating various electronic components. In this case, a universal mobile terminal 100 in which a synthetic resin or metal is connected from the side to the rear side can be realized.

Meanwhile, the mobile terminal 100 may include a waterproof unit (not shown) for preventing water from penetrating into the terminal body. For example, the waterproof portion is provided between the window 151a and the front case 101, between the front case 101 and the rear case 102, or between the rear case 102 and the rear cover 103, And a waterproof member for sealing the inside space of the oven.

The mobile terminal 100 is provided with a display unit 151, first and second sound output units 152a and 152b, a proximity sensor 141, an illuminance sensor 142, a light output unit 154, Cameras 121a and 121b, first and second operation units 123a and 123b, a microphone 122, an interface unit 160, and the like.

1A and 1B, a display unit 151, a first sound output unit 152a, a proximity sensor 141, an illuminance sensor 142, an optical output unit (not shown) A second operation unit 123b, a microphone 122 and an interface unit 160 are disposed on a side surface of the terminal body, And a mobile terminal 100 having a second sound output unit 152b and a second camera 121b disposed on a rear surface thereof.

However, these configurations are not limited to this arrangement. These configurations may be excluded or replaced as needed, or placed on different planes. For example, the first operation unit 123a may not be provided on the front surface of the terminal body, and the second sound output unit 152b may be provided on the side surface of the terminal body rather than the rear surface of the terminal body.

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, the display unit 151 may display execution screen information of an application program driven by the mobile terminal 100 or UI (User Interface) and GUI (Graphic User Interface) information according to the execution screen information .

The display unit 151 may be a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), a flexible display display, a 3D display, and an e-ink display.

In addition, the display unit 151 may exist in two or more depending on the embodiment of the mobile terminal 100. In this case, the mobile terminal 100 may be provided with a plurality of display portions spaced apart from each other or disposed integrally with one another, or may be disposed on different surfaces, respectively.

The display unit 151 may include a touch sensor that senses a touch with respect to the display unit 151 so that a control command can be received by a touch method. When a touch is made to the display unit 151, the touch sensor senses the touch, and the control unit 180 generates a control command corresponding to the touch based on the touch. The content input by the touch method may be a letter or a number, an instruction in various modes, a menu item which can be designated, and the like.

The touch sensor may be a film having a touch pattern and disposed between the window 151a and a display (not shown) on the rear surface of the window 151a, or may be a metal wire . Alternatively, the touch sensor may be formed integrally with the display. For example, the touch sensor may be disposed on a substrate of the display or inside the display.

In this way, the display unit 151 can form a touch screen together with the touch sensor. In this case, the touch screen can function as the user input unit 123 (see FIG. 1). In some cases, the touch screen may replace at least some functions of the first operation unit 123a.

The first sound output unit 152a may be implemented as a receiver for transmitting a call sound to a user's ear and the second sound output unit 152b may be implemented as a loud speaker for outputting various alarm sounds or multimedia playback sounds. ). ≪ / RTI >

The window 151a of the display unit 151 may be provided with an acoustic hole for emitting the sound generated from the first acoustic output unit 152a. However, the present invention is not limited to this, and the sound may be configured to be emitted along an assembly gap (for example, a gap between the window 151a and the front case 101) between the structures. In this case, the appearance of the mobile terminal 100 can be made more simple because the hole formed independently for the apparent acoustic output is hidden or hidden.

The optical output unit 154 is configured to output light for notifying the occurrence of an event. Examples of the event include a message reception, a call signal reception, a missed call, an alarm, a schedule notification, an email reception, and reception of information through an application. The control unit 180 may control the light output unit 154 to terminate the light output when the event confirmation of the user is detected.

The first camera 121a processes an image frame of a still image or a moving image obtained by the image sensor in the photographing mode or the video communication mode. The processed image frame can be displayed on the display unit 151 and can be stored in the memory 170. [

The first and second operation units 123a and 123b may be collectively referred to as a manipulating portion as an example of a user input unit 123 operated to receive a command for controlling the operation of the mobile terminal 100 have. The first and second operation units 123a and 123b can be employed in any manner as long as the user is in a tactile manner such as touch, push, scroll, or the like. In addition, the first and second operation units 123a and 123b may be employed in a manner that the user operates the apparatus without touching the user through a proximity touch, a hovering touch, or the like.

In this figure, the first operation unit 123a is a touch key, but the present invention is not limited thereto. For example, the first operation unit 123a may be a mechanical key, or a combination of a touch key and a touch key.

The contents input by the first and second operation units 123a and 123b can be variously set. For example, the first operation unit 123a receives a command such as a menu, a home key, a cancellation, a search, and the like, and the second operation unit 123b receives a command from the first or second sound output unit 152a or 152b The size of the sound, and the change of the display unit 151 to the touch recognition mode.

On the other hand, a rear input unit (not shown) may be provided on the rear surface of the terminal body as another example of the user input unit 123. The rear input unit is operated to receive a command for controlling the operation of the mobile terminal 100, and input contents may be variously set. For example, commands such as power on / off, start, end, scrolling, and the like, the size adjustment of the sound output from the first and second sound output units 152a and 152b, And the like can be inputted. The rear input unit may be implemented as a touch input, a push input, or a combination thereof.

The rear input unit may be disposed so as to overlap with the front display unit 151 in the thickness direction of the terminal body. For example, the rear input unit may be disposed at the rear upper end of the terminal body such that when the user holds the terminal body with one hand, the rear input unit can be easily manipulated using the index finger. However, the present invention is not limited thereto, and the position of the rear input unit may be changed.

When a rear input unit is provided on the rear surface of the terminal body, a new type of user interface using the rear input unit can be realized. When the first operation unit 123a is not disposed on the front surface of the terminal body in place of at least a part of the functions of the first operation unit 123a provided on the front surface of the terminal body, The display unit 151 may be configured as a larger screen.

Meanwhile, the mobile terminal 100 may be provided with a fingerprint recognition sensor for recognizing the fingerprint of the user, and the controller 180 may use the fingerprint information sensed through the fingerprint recognition sensor as authentication means. The fingerprint recognition sensor may be embedded in the display unit 151 or the user input unit 123.

The microphone 122 is configured to receive the user's voice, other sounds, and the like. The microphone 122 may be provided at a plurality of locations to receive stereophonic sound.

The interface unit 160 is a path through which the mobile terminal 100 can be connected to an external device. For example, the interface unit 160 may include a connection terminal for connection with another device (for example, an earphone or an external speaker), a port for short-range communication (for example, an infrared port (IrDA Port), a Bluetooth port A wireless LAN port, or the like), or a power supply terminal for supplying power to the mobile terminal 100. The interface unit 160 may be implemented as a socket for receiving an external card such as a SIM (Subscriber Identification Module) or a UIM (User Identity Module) or a memory card for storing information.

And a second camera 121b may be disposed on a rear surface of the terminal body. In this case, the second camera 121b has a photographing direction which is substantially opposite to that of the first camera 121a.

The second camera 121b may include a plurality of lenses arranged along at least one line. The plurality of lenses may be arranged in a matrix form. Such a camera can be named an 'array camera'. When the second camera 121b is configured as an array camera, images can be taken in various ways using a plurality of lenses, and a better quality image can be obtained.

The flash 124 may be disposed adjacent to the second camera 121b. The flash 124 shines light toward the subject when the subject is photographed by the second camera 121b.

And a second sound output unit 152b may be additionally disposed in the terminal body. The second sound output unit 152b may implement a stereo function together with the first sound output unit 152a and may be used for implementing a speakerphone mode in a call.

The terminal body may be provided with at least one antenna for wireless communication. The antenna may be embedded in the terminal body or formed in the case. For example, an antenna constituting a part of the broadcast receiving module 111 (see FIG. 1) can be configured to be able to be drawn out from the terminal body. Alternatively, the antenna may be formed in a film type and attached to the inner surface of the rear cover 103, or a case including a conductive material may be configured to function as an antenna.

The terminal body is provided with a power supply unit 190 (see FIG. 1) for supplying power to the mobile terminal 100. The power supply unit 190 may include a battery 191 built in the terminal body or detachable from the outside of the terminal body.

The battery 191 may be configured to receive power through a power cable connected to the interface unit 160. In addition, the battery 191 may be configured to be wirelessly chargeable through a wireless charger. The wireless charging may be implemented by a magnetic induction method or a resonance method (magnetic resonance method).

The rear cover 103 is configured to be coupled to the rear case 102 so as to cover the battery 191 to restrict the release of the battery 191 and to protect the battery 191 from external impact and foreign matter . When the battery 191 is detachably attached to the terminal body, the rear cover 103 may be detachably coupled to the rear case 102.

The mobile terminal 100 may be provided with an accessory that protects the appearance or supports or expands the function of the mobile terminal 100. [ One example of such an accessory is a cover or pouch that covers or accommodates at least one side of the mobile terminal 100. [ The cover or pouch may be configured to interlock with the display unit 151 to expand the function of the mobile terminal 100. Another example of an accessory is a touch pen for supplementing or extending a touch input to the touch screen.

In the following, various embodiments may be embodied in a recording medium readable by a computer or similar device using, for example, software, hardware, or a combination thereof.

As described above, with reference to the touch sensor 143, the display unit 151 and the control unit 180 shown in Figs. 1A to 1C, the mobile terminal performing the power cutoff according to the present invention and the control method thereof .

2 is a block diagram of a mobile terminal that performs power shutdown according to the present invention. The mobile terminal 100 includes a touch sensor 143, a display unit 151, and a control unit 180.

The touch sensor 143 senses a change value of a capacitance for each cell in response to a touch input.

The display unit 151 receives the input of the user by the touch sensor 143.

A method of sensing the touch input performed by the touch sensor 143 or sensing a region where water is detected on the surface of the display unit 151 is as follows. When the surface of the display unit 151 is in contact with water, there is a portion where the change value of the capacitance is changed to negative. In this regard, Fig. 3 shows the magnitude of the droplet and the value of the change in capacitance with respect to the region (center or periphery) of the droplet, as an embodiment of the present invention. That is, the change value of the capacitance varies depending on the size of the droplet and the region (center or periphery) of the droplet.

According to FIG. 3 (a), when a small droplet is formed on the surface of the display portion, it has a positive value of 2 to 3% around the water droplet and a negative value of -10% or more at the center of the water droplet.

On the other hand, according to FIG. 3 (b), when a large water droplet is formed on the surface of the display portion, it has a negative value of -10% or more around the water droplet and a positive value of 10% or more at the center of the water droplet .

A method of sensing capacitance variation according to the operation principle of the touch sensor 143 and a water detection method based on the capacitance variation amount sensing method will now be described. In this regard, FIGS. 4 and 5 illustrate the principle of operation of the self-capacitance type and mutual capacitance type touch sensors according to the present invention.

4 shows the operating principle of the self-capacitance method and a state in which the touch sensor is attached to the rear surface of the display portion. 5 shows the principle of operation of the mutual capacitance type and a state in which the touch sensor is attached to the rear surface of the display unit.

 According to FIG. 4A, in the self-capacitance method, the amount of capacitance change of a single electrode of each of the X and Y electrodes is detected. The electrostatic capacitance of the sensing electrode itself is used as the initial value, and the change of the electrostatic capacitance component that is increased on the sensing electrode as the finger is touched is recognized. Charging and discharging are performed once for each channel to detect the change in capacitance, and the position is recognized by the change in capacitance of the sensing electrode itself through charge and discharge in each channel of the X and Y axes.

4 (b), the touch sensor 443 includes a plurality of gratings in the form of a single layer, and the plurality of gratings may be arranged in the uniaxial direction. The touch sensor 443 is attached to the rear surface of the display unit 151. The self-capacitance method senses a capacitance (Ct) generated between a touch object such as a finger and a sensing electrode in a touch panel without applying a separate driving signal for touch input recognition to determine a touch input position. When a part of the body touches the touch sensor 343, a capacitance is generated between the touching body and the sensing electrode. The sensing circuit electrically connected to the touch sensor 443 senses the presence or absence of contact and the contact area in the touch sensor 443 by supplying charge to the touch sensor and measuring a change in voltage (or current) .

According to FIG. 5A, in the mutual capacitance method, a capacitance change amount formed between X and Y electrodes is detected.

5B, according to the mutual capacitance method, a sensing electrode for sensing a touch and a driving electrode for sensing a driving signal are formed on the principle of driving-sensing, (Cm) of the mutual electrostatic capacitance between the two electrodes due to the touch, thereby determining the touch input position. The method of using the mutual capacitance may be easy to judge the multi-touch input.

5 (b), the touch sensor 543 includes a plurality of first gratings 543a arranged in the uniaxial direction and a plurality of second gratings 543b arranged in the second axis direction perpendicular to the first gratings, .

Meanwhile, the touch sensing method is used to recognize a touch input of a user at a specific position of the display unit 151. However, such a touch sensing method can be used to determine an area of the display unit 151 on which a specific substance is placed. For example, if the area where the water is detected on the surface of the display unit 151 is smaller than a predetermined first threshold value in which water is spilled, the damage of the terminal will not be a problem. In this case, although water is detected on the surface, it can be recognized as a water noise. On the other hand, when the area in which the water is detected is equal to or larger than a predetermined first threshold value in which water is spilled on the surface of the display unit 151, a notification message for removing water is generated, (151). Furthermore, if the area is greater than or equal to a predetermined second threshold value, the display unit 151 may be turned off.

Specifically, when the area is greater than or equal to the first threshold value and less than or equal to the second threshold value, the controller 180 can turn off the touch sensors 443 and 543 in the area where the water is detected. On the other hand, in order to turn off the touch sensor corresponding to a certain area, it is effective to use the touch sensor 543 adopting the mutual capacitance method. This is because, when water is spilled, it is mostly scattered to various points on the surface of the display unit 151. Therefore, the mutual capacitance method for sensing the capacitance change value at each point in the X- and Y-axis directions can be sensed with high accuracy.

The control unit 180 determines an area where water is detected on the display unit 151 based on the change value of the capacitance. If the detected area is larger than a predetermined area, the controller 180 cuts off power supplied from the power supply unit to the internal circuit. For example, the predetermined area may be 1/2 or more.

Meanwhile, the water detecting method according to the capacitance change value can determine whether or not the power is cut off by considering the area of the area where the water is detected, the area, the position, and the size of the water droplet. In addition, it is possible to determine whether or not the touch sensor is turned off in a specific area in consideration of the area, the position, and the size of the water droplet. For example, when the position of the region is easy to absorb water into an internal component, power off or touch sensor off can be performed even when the area of the region is smaller than a threshold value. Also, when the size of the water droplet is large, power shutdown or touch sensor off can be performed even when the area of the area is smaller than the threshold value. Here, the position of the region can be recognized through the sensing of the change value of the capacitance using the mutual capacitance method. Also, the size of the water droplet can be grasped through the shape of the change value of the capacitance at the center and periphery of the water droplet.

FIG. 6 is a block diagram of a controller for performing power shutdown according to an exemplary embodiment of the present invention. Referring to FIG. The control unit 180 further includes an application processor 181, a power management integrated chip (PMIC) 182, and a load switch 183. The controller 180 is interfaced with the touch sensor 143 and the power supply unit 190. Here, the power supply unit 190 may be referred to as a battery.

The application processor 181 generates a power down control signal for shutting down the power supply based on the change value of the capacitance from the touch sensor 143. [

The application processor 181 may also receive a battery IN signal from the power management integrated circuit to indicate that the battery is connected to the power management integrated circuit 182. At this time, the application processor 181 may generate a power-off control signal for shutting off the power supply based on the change value of the capacitance.

The power management integrated circuit 182 may send the battery connection signal to the application processor 181. The power management integrated circuit 182 may also receive a battery OUT signal from the load switch 183 and transmit the battery isolation signal to the application processor 181.

The load switch 183 receives the power-off control signal from the application processor 181. At this time, the load switch 183 transmits a battery release signal generated based on the received power-off signal to the power management integrated circuit 182.

The power supply unit 190 corresponds to a battery and supplies power to the power management integrated circuit 182. Also, the power supply unit 190 may transmit the battery connection signal to the load switch 183.

As described above, the configuration and principle of a mobile terminal performing touch control and power shutdown have been described in detail. Hereinafter, a procedure for performing the touch control and power off will be described.

7 is a flowchart of a method of performing touch control and power off according to the present invention. The method for performing the touch control and the power shutdown includes a capacitance change value sensing process S710, a water detection region determination process S720, and a power off process S730. In addition, the method for performing the touch control and the power-off may perform the touch control process S740 without performing the power-off process S730.

The capacitance change value sensing step S710 senses a capacitance change value for each cell of the touch sensor in response to a touch input.

The water detection area determination process (S720) determines an area where water is detected on the display unit based on the change value of the capacitance for each cell.

If it is determined in step S720 that the detected area is equal to or larger than the predetermined area, the power off process S730 is performed. On the other hand, if it is determined that the area is less than the predetermined area in the water detection area determination process (S720), the touch control process (S740) may be performed.

In the power off process S730, if the detected area is equal to or larger than a predetermined area of the entire area, the power supplied from the power supply unit to the internal circuit is cut off.

The touch control process (S740) generates a notification message to remove water when the area is equal to or larger than a predetermined first threshold value in which the surface of the display unit is spilled. Further, the notification message is displayed on the display unit. At this time, when the area is equal to or greater than the first threshold value and equal to or less than the second threshold value, the touch sensor in the area where the water is detected can be turned off.

In addition, the power off process S730 may turn off the power source if the area is greater than or equal to a predetermined second threshold value in which the display unit has fallen into the water.

It should be understood that each of the processes shown in FIG. 7 may be combined with the features described in the structure and principle of the mobile terminal performing the touch control and power off as described above with reference to FIG. 2 to FIG.

As described above, according to at least one embodiment of the present invention, it is possible to provide different control methods depending on the area and degree of water detected on the surface of the display unit.

Further, according to at least one of the embodiments of the present invention, there is an advantage in blocking power supply from the battery when water is detected in a certain region or more.

The present invention described above can be embodied as computer-readable codes on a medium on which a program is recorded. The computer readable medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of the computer readable medium include a hard disk drive (HDD), a solid state disk (SSD), a silicon disk drive (SDD), a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, , And may also be implemented in the form of a carrier wave (e.g., transmission over the Internet). In addition, the computer may include a control unit 180 of the mobile terminal. Accordingly, the above description should not be construed in a limiting sense in all respects and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

100: mobile terminal 143, 343, 443: touch sensor
151: display unit 180:

Claims (7)

In the mobile terminal,
A touch sensor for sensing a change value of a capacitance for each cell in response to a touch input;
A display unit receiving a user's input by the touch sensor; And
And a control unit for judging an area of the display unit on which the specific substance is deposited based on the change value of the capacitance and for shutting off the power supplied from the power supply unit to the internal circuit when the area is larger than a predetermined area, . The method according to claim 1,
Wherein,
And an application processor for generating a power-off control signal for shutting off the power supply based on a change value of the capacitance from the touch sensor. 3. The method of claim 2,
Wherein,
A load switch for receiving the power down control signal from the application processor and transmitting a battery OUT signal generated based on the received power down signal to a power management integrated chip (PMIC) ≪ / RTI > The method of claim 3,
The application processor,
When a battery IN signal indicating that the battery is connected to the power management integrated circuit is received from the power management integrated circuit, a power cutoff control signal for shutting off the power supply based on the change value of the capacitance The mobile terminal. The method according to claim 1,
Wherein,
Generating a notification message to remove water when the area is equal to or larger than a predetermined first threshold value in which water is spilled on the surface of the display section, displaying the notification message on the display section,
And when the area is equal to or larger than a predetermined second threshold value in which the display part falls into the water, the power source is shut off. The method according to claim 6,
Wherein the controller turns off the touch sensor of the area where water is detected when the area is equal to or greater than the first threshold value and equal to or less than the second threshold value. A method for powering off a mobile terminal,
A capacitance change value sensing step of sensing a change value of a capacitance for each cell of the touch sensor in response to a touch input;
A water detection area determining step of determining a water detection area on the display unit based on a change value of capacitance of each cell; And
And disconnecting power supplied from the power supply unit to the internal circuit when the area is greater than or equal to a predetermined area of the entire area.

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