WO2020105794A1 - Flexible display device - Google Patents

Abstract

Disclosed in the present invention is a flexible display device, comprising: a flexible display unit which is formed to be transformable; a flexible frame disposed on the rear surface of the flexible display unit and configured to be folded and unfolded together with the flexible display unit; and a plurality of hinge segments connected to the flexible frame, wherein the hinge segments are sequentially disposed along the edge of the flexible frame, and are coupled with the flexible frame at one end such that the spacing at the other end is changed by the folding and unfolding of the flexible display unit.

Description

Flexible display device

The present invention relates to a flexible display device having a flexible display that can be deformed by external force.

A portable electronic device (hereinafter referred to as a mobile terminal), such as a communication terminal, a multimedia device, a portable computer, a game machine, and a photographing device, has a display for displaying image information. The mobile terminal also has a folding structure that can be folded to a smaller size for convenience of carrying. In this type of electronic device, two bodies are connected by a folding structure (for example, a hinge portion).

Since a conventional display has a structure that cannot be folded, a structure in which a display is disposed over two bodies to which a display is foldably connected cannot be implemented. Therefore, a large screen could not be practically applied to an electronic device having a folding structure.

However, with the development of a flexible display capable of bending in recent years, research is being conducted to apply the flexible display to a mobile terminal having a folding structure. In this case, since the flexible display can be arranged across the two bodies across the folding structure, a large screen can be implemented.

However, in the flexible display device, the flexible display is transformed into a folded (folded) state and an unfolded (unfolded) state using a hinge, but there is a problem of variation in deformation. That is, in the case of bending, a phenomenon occurs in which one side is tensilely deformed and the other side is compressively deformed around the neutral axis (neutral line).

More specifically, in order to supplement the characteristics of the display, the folding structure of the electronic device includes a hinge operation structure (length compensation method, concealment structure, interlocking structure for each element) or a back surface of the display for controlling the neutral plane of the display. Various considerations are needed for the structure and the operation method to support the. Accordingly, in the present invention, as part of such consideration, a new mechanism is applied to the hinge portion and the surrounding structure.

The first object of the present invention is to provide a hinge structure that does not require length compensation according to folding and unfolding in a flexible display device.

A third object of the present invention is to provide a flexible display device in which a neutral line and a display line are formed at substantially the same position.

The second object of the present invention is to provide a hinge structure that can be made slimmer in size in a flexible display device.

In order to achieve the above object of the present invention, the flexible display device has a live hinge structure without a rotating shaft. In addition, the live hinge can be implemented with a new mechanism in which the rotation reference is formed inside the hinge portion.

More specifically, the flexible display device includes a flexible display unit formed to be deformable, a flexible frame disposed on a rear surface of the flexible display unit, and folding and unfolding together with the flexible display unit, and connected to the flexible frame It includes a plurality of hinge segments, and the hinge segments are sequentially arranged along the edge of the flexible frame, and are combined with the flexible frame at the other end so that the spacing of one end is changed by folding and unfolding of the flexible display unit.

In an embodiment of the present invention, a neutral line of the plurality of hinge segments having no change in length during folding and unfolding of the flexible display unit is formed along the other end. The plurality of hinge segments may be combined with the edge at the other end so that the neutral line is located at the edge of the flexible frame. As such, as the neutral line of the flexible display device is formed inside the hinge segments, a neutral line may be formed at a position substantially the same as the flexible display unit.

As another example, each of the hinge segments may include a base portion and a projection portion protruding from the base portion to form the other end, and a side surface of the projection portion may be combined with an edge of the flexible frame.

The base portion is disposed to face the rear surface of the flexible frame, and the protrusion portion may protrude from both sides of the base portion to be higher than the rear surface of the flexible frame with respect to the base portion.

As another example, a receiving groove is formed on one side of the base portion, and a protrusion that is accommodated in the receiving groove of adjacent hinge segments when the flexible display portion is unfolded is formed on the other side of the base portion. When the flexible display unit is folded, the protrusion may move in a direction away from the receiving groove of the adjacent hinge segments.

As another example, the hinge segments may be located in a portion that is deformed in the flexible frame. Specifically, the flexible frame includes a flexible region in which through-holes are repeatedly disposed, and the hinge segments are disposed to overlap the flexible region.

As another example, the hinge segments and the flexible frame are each formed of a metal material, and a joint having a brazing welding agent is disposed between the hinge segments and the flexible frame.

The flexible frame is formed of titanium, stainless steel or an amorphous alloy, and the hinge segments are made of stainless steel. The brazing welding agent may have an amorphous alloy.

In addition, the present invention implements a flexible display device of a two-stage in-folding type using the above-described live hinge. Specifically, the flexible display device includes a first body and a second body on which the flexible display unit is disposed, and the hinge segments connect the first body and the second body so as to be rotatable, and the flexible display unit comprises the It can be folded and unfolded by relative rotation.

The flexible display unit is disposed on the front surface of the first body and the second body facing each other when the flexible display unit is folded, and a change in the spacing of the hinge segments may increase as the distance from the front surface increases.

One of the first body and the second body is formed with a body protrusion accommodated in a receiving groove provided in any one of the hinge segments, and the other of the first body and the second body has one of the hinge segments. A body groove into which a protrusion provided in the other is inserted may be formed.

In addition, the present invention implements a flexible display device of a three-stage folding type using the above-described live hinge. Specifically, the flexible display device includes a base body wrapped by the flexible display unit when folding the flexible display unit, and the flexible display unit can be rotatably connected to one side of the base body.

At least a portion of the other side of the base body, which is the opposite side of the one side of the base body, is formed as a curved surface, and the hinge segments are sequentially arranged along the curved surface of the base body while the flexible display unit surrounds the base body.

The hinge segments are rotatably connected to the first body and the second body on which the flexible display unit is disposed, and the first body and the second body cover both sides of the base body when the flexible display unit surrounds the base body. It is made to cover each.

The first body may be rotatably coupled to the base body, and an elastic force providing unit for pulling the flexible display unit may be disposed on the second body.

As another example, a through hole may be formed in the hinge segment, and an elastic member may be inserted into the through hole.

In addition, the present invention is disposed on one surface of the first body and the second body, and a hinge portion that connects the first body and the second body to enable relative rotation, and the first body and the second body, and the relative rotation The flexible display unit for folding and unfolding, and a flexible frame disposed on the rear surface of the flexible display unit to fold and unfold together with the flexible display unit, and change in length according to folding and unfolding of the flexible display unit. Disclosed is a flexible display device comprising a plurality of hinge segments sequentially coupled to an edge of the flexible frame at an end, such that a neutral line of the hinge portion without is formed at an edge of the flexible frame.

Effects of the present invention obtained through the above-described solution are as follows.

First, in the case of a multi-axis hinge, the neutral part of the hinge part is formed at a position spaced apart from the display line, but the live hinge of the present invention does not have a structure for compensation for a separate length because the neutral line and the display line are the same. do.

Second, a more compact structure can be provided to the display device through a structure in which hinge segments are coupled to the flexible frame at the ends. In addition, the hinge segments and the flexible frame may be coupled to each other at the edge of the flexible frame through brazing. In addition, as the protrusions of the hinge segments are coupled to the edges of the flexible frame, a structure in which the base parts of the hinge segments support the rear surface of the flexible frame can be implemented.

Third, through the live hinge structure, the neutral line and the display line can be matched regardless of the inner foldable type and the outer foldable type.

1 is a perspective view showing an example of a hinge portion and a flexible frame of the present invention.

Figure 2 is an enlarged view of part A of Figure 1

3 is a side view of part A of FIG. 1;

Fig. 4 is a sectional view taken along line B-B in Fig. 2;

5 is an enlarged view showing a hinge segment of the hinge part of FIG. 1.

FIG. 6 is an enlarged plan view showing the flexible frame of FIG. 1.

7 is a block diagram illustrating a flexible display device related to the present invention.

8 is a conceptual diagram illustrating a flexible display device to which the hinge portion of FIG. 1 is applied.

9A is a cross-sectional view showing the operation of the flexible display device of FIG. 8.

Figure 9b is an operation of the multi-axis hinge compared to the hinge portion of Figure 9a.

10 is a conceptual diagram illustrating another embodiment of a flexible display device to which the hinge portion of the present invention is applied.

11 is an operation diagram illustrating an operation of the flexible display device of FIG. 10.

12 is an exploded view of the flexible display device of FIG. 10.

13 and 14 are exploded views and cross-sectional views showing a modification of the flexible display device of FIG. 10.

15 is a conceptual diagram illustrating another embodiment of a flexible display device to which the hinge portion of the present invention is applied.

Hereinafter, exemplary embodiments disclosed herein will be described in detail with reference to the accompanying drawings, but the same or similar components will be denoted by the same reference numerals, and overlapping descriptions thereof will be omitted. The suffixes "modules" and "parts" for components used in the following description are given or mixed only considering the ease of writing the specification, and do not have meanings or roles distinguished from each other in themselves. In addition, in describing the embodiments disclosed in this specification, detailed descriptions of related known technologies are omitted when it is determined that the gist of the embodiments disclosed in this specification may be obscured. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical spirit disclosed in the specification is not limited by the accompanying drawings, and all modifications included in the spirit and technical scope of the present invention , It should be understood to include equivalents or substitutes.

Terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from other components.

When an element is said to be "connected" or "connected" to another component, it is understood that other components may be directly connected to or connected to the other component, but there may be other components in between. It should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that no other component exists in the middle.

Singular expressions include plural expressions unless the context clearly indicates otherwise.

In this application, terms such as "comprises" or "have" are intended to indicate the presence of features, numbers, steps, actions, components, parts or combinations thereof described in the specification, but one or more other features. It should be understood that the existence or addition possibilities of fields or numbers, steps, operations, components, parts or combinations thereof are not excluded in advance.

As described above, in the present invention, a live hinge having a new structure in which a length of the flexible display unit does not need to be compensated in the flexible display device is proposed. Hereinafter, the structure of the live hinge will be described first with reference to FIGS. 1 to 6, and various embodiments of the flexible display device to which the live hinge is applied will be described with reference to FIGS. 7 to 15.

1 is a perspective view showing an example of the hinge portion and the flexible frame of the present invention, Figure 2 is an enlarged view of part A of Figure 1, Figure 3 is a side view of part A of Figure 1, Figure 4 is of Figure 2 5 is a cross-sectional view taken along the line BB, FIG. 5 is an enlarged view showing the hinge segment of FIG. 1, and FIG. 6 is an enlarged plan view showing the flexible frame of FIG. 1.

1 to 6, as an example of implementing folding and unfolding of the flexible display unit using a live hinge, the hinge unit 230 includes a plurality of hinge segments 240.

The plurality of hinge segments 240 are connected to the flexible frame 220, and the flexible frame 220 is disposed on the rear surface of the flexible display unit 251 (see FIG. 8), and the flexible display unit 251 It can be a structure that folds and unfolds together.

In this case, the flexible display unit 251 is made to be deformable by external force.

 The deformation may be at least one of bending, bending, folding, twisting, and curling of the display unit. The deformable display unit may be referred to as a 'flexible display'. Here, the flexible display unit 251 may include both a general flexible display, an e-paper, and a combination thereof.

In a state in which the flexible display unit 251 is not deformed (for example, a state having an infinite curvature radius, hereinafter referred to as a first state, see FIG. 8 (a)), the display area of the flexible display unit 251 Becomes a plane. In the state deformed by an external force in the first state (for example, a state having a finite curvature radius, hereinafter referred to as a second state, see FIG. 8 (b)), the display area may be a curved surface. .

The flexible frame 220 is disposed on the rear surface of the flexible display unit 251 to be folded and unfolded together with the flexible display unit 251.

The flexible frame 220 may be formed to have the same or smaller size than the flexible display unit 251 in the X direction. Accordingly, at least a portion of the hinge segments 240 may be disposed on both sides of the flexible display unit 251 and the flexible frame 220. However, the present invention is not necessarily limited to this, and the flexible frame 220 may be slightly larger than the flexible display unit 251 in the X direction.

Referring to FIG. 6, the flexible frame 220 includes a flexible region 225 that can be bent with at least one maximum curvature. The flexible region 225 may be a region in which through holes are repeatedly disposed, and is made to be folded and unfolded.

The flexible region 225 may include a plurality of flexible portions capable of bending at different maximum curvatures. In the following description, the X direction corresponds to the width direction of the flexible frame 220, and the Y direction corresponds to the longitudinal direction of the flexible frame 220.

In this example, the flexible region 225 includes a first flexible portion 221 that can be bent to a state having a maximum first curvature and a second flexible portion 222 that can be bent to a state having a maximum second curvature. . As shown, the second flexible portion 222 is provided in two, may be disposed on both sides on the Y direction of the first flexible portion 221, respectively.

In order to implement the bending of the first flexible portion 221, first holes are repeatedly formed in the first flexible portion 221. That is, flexibility is generated in the first flexible portion 221 by the first holes, and the first flexible portion 221 is configured to be bent to a state having a maximum first curvature.

The first holes are formed repeatedly along the crossing X and Y directions, respectively. The first holes are formed to extend in the X direction.

Likewise, in order to implement the bending of the second flexible portion 222, second holes are repeatedly formed in the second flexible portion 222. That is, flexibility is generated in the second flexible portion 222 by the second holes, and the second flexible portion 222 is configured to be bent to a state having a maximum second curvature. Here, the second curvature has a curvature different from the first curvature.

The second holes are formed in a different shape or parallel to the first holes, and the second flexible portion 222 is configured to be bent with respect to the Y direction together with the first flexible portion 221. The second holes are repeatedly formed along the crossing X and Y directions, respectively. The second holes are elongated in the X direction.

In this example, the first curvature may be greater than the second curvature. That is, the first flexible portion 221 is configured to bend more than the second flexible portion 222. As such, the total area occupied by the first holes per unit area in the first flexible portion 221 is the second flexible portion 212 so that the first flexible portion 221 is more bent than the second flexible portion 222. In may be larger than the total area occupied by the second hole per unit area.

Accordingly, in a state in which the first and second flexible portions 221 and 222 are curved at first and second curvatures, the repulsive force acting on the first flexible portion 221 is a repulsive force acting on the second flexible portion 222. Can be greater.

A rigid potion 226 is disposed on one side of the second flexible potion 222 in the Y direction. The rigid potion 226 is a portion hardly bent by an external force, and may be formed in a plane. The rigid potion 226 is not formed with holes having the intention of realizing bending.

As described above, the rigid potions 226 and the first flexible potions 221 are disposed on both sides of the second flexible potion 222 in the Y direction. In a state where the first and second flexible potions 221 and 222 are bent to the maximum, the rigid potions 226 are disposed to face each other.

As described above, the second flexible portions 222 are disposed on both sides of the first flexible portion 221 in the Y direction, and the rigid portions 226 are disposed on one side on the Y direction of each of the second flexible portions 222. It is placed.

Referring to FIG. 6, the first flexible portion 221 of the flexible frame 220 is formed in an intermediate portion of the flexible frame 220, and thus the bending portion 252 of the flexible display unit 251 is shown in FIG. 8 (b) of FIG. Reference). The rigid portion 226 supports the flexible display unit 251 on both sides of the bent portion 252 in a flat state.

In this case, since the hinge portions 230 are disposed on both sides of the flexible frame 220, a curved cross-sectional shape of the flexible region 225 may overlap the hinge portion 230. In another aspect, a curved cross-sectional shape of the bent portion 252 of the flexible display unit 251 may overlap the hinge portion 230. However, according to the thickness of the flexible frame 220, only the flexible area of the flexible frame 220 overlaps the hinge portion 230, and the bent portion 252 of the flexible display portion 251 is the hinge It is also possible to be disposed above the branch 230.

In the above, the positional relationship between the flexible frame 220, the flexible display unit 251, and the hinge unit 230 has been described, but the present invention is not necessarily limited thereto, and a configuration without the flexible frame 220 is also possible. .

1 to 5, the hinge part 230 includes a plurality of hinge segments 240 connected to the flexible frame 220. Hereinafter, it is assumed that the flexible frame 220 is present, but the present invention is not necessarily limited thereto. In a configuration without the flexible frame 220, hinge segments 240 of the hinge part 230 may be connected to the flexible display part 251. In this case, a separate edge member that can be combined with the hinge segments 240 may be disposed on the edge of the flexible display unit 251.

Referring back to the drawings, the hinge segments 240 are sequentially arranged along the edge of the flexible frame 220, and the gap of one end is changed by folding and unfolding of the flexible display unit 251. It is coupled to the flexible frame 220 at the other end. For example, the hinge segments 240 are formed to be rotatable at one end as a free end, and the other end is combined with the flexible frame 220 to form a fixed end that is the center of the rotational displacement.

The hinge segments 240 may be disposed to overlap the flexible area 225. More specifically, since the hinge segments 240 guide folding and unfolding of the flexible area 225, a curved cross-sectional shape of the flexible area may overlap with the hinge segments 240. Further, the hinge segments 240 may be disposed to contact adjacent hinge segments at both sides when unfolding the flexible area 225.

In this case, the hinge segments 240 may include a base portion 241 and a protrusion 242 protruding from the base portion 241 to form the other end.

The base portion 241 is formed to be elongated along the X direction, and may be disposed to face the rear surface of the flexible frame 220. Thus, the base portion 241 is made to overlap with the flexible frame 220 and the flexible display unit 251 in the thickness direction of the flexible frame 220 or the flexible display unit 251. In this case, the base portions 241 of the hinge segments 240 may be formed to contact the base portions 241 of adjacent left and right hinge segments on both sides of the base portion 241, respectively.

The protruding portion 242 may be a portion protruding from the other end portion to be combined with the flexible frame 220. More specifically, the protruding portion 242 protrudes from both sides of the base portion 241, and a side surface of the protruding portion 242 may be combined with an edge of the flexible frame 220. By this structure, a space may be formed between the upper surface of the base portion 241 and the rear surface of the flexible frame 220.

According to the drawing, the protruding portion 242 may protrude from both sides of the base portion 241 to be higher than the rear surface of the flexible frame 220 based on the base portion 241. As it protrudes more than the rear surface of the flexible frame 220, edges of the flexible frame 220 may overlap each other in the X direction with the protrusion 242. In this overlapping portion, the edge of the flexible frame 220 and the protrusion 242 may be coupled to each other.

In this case, the edge of the flexible frame 220 and the protrusion 242 may be coupled to each other by brazing welding.

For example, each of the hinge segments 240 and the flexible frame 220 is formed of a metal material, and a joint having a brazing welding agent between the hinge segments 240 and the flexible frame 220 is provided. 243 may be disposed.

More specifically, the flexible frame 220 may be formed of titanium, stainless steel, or an amorphous alloy. When the flexible frame 220 is made of titanium, the through hole of the flexible region 225 is formed to have a larger diameter than the thickness of the titanium. As another example, when the flexible frame 220 is made of an amorphous alloy, for example, liquid metal, the flexible frame 220 may have a structure without the through hole.

Meanwhile, the hinge segments 240 may be made of stainless steel or titanium. In this case, considering the manufacturing cost, the hinge segments 240 may be formed of stainless steel.

When the hinge segments 240 are made of stainless steel, and the flexible frame 220 is made of titanium or an amorphous alloy, there is a problem that bonding is difficult as a heterogeneous material, but in this example, both are combined through the brazing. The brazing welding agent may have a melting temperature of 450 degrees or higher, but the melting temperature may be lower than that of the hinge segments 240 and the flexible frame 220. As an example of this, in particular, an amorphous alloy may be provided as a filler metal. That is, the brazing welding agent has an amorphous alloy.

   According to the above-described coupling method, the protrusions 242 of the hinge segments 240 may be coupled to corners of the flexible frame 220. In addition, since the hinge segments 240 are sequentially arranged along the Y direction, a coupling portion of the hinge segments 240 and the flexible frame 220 may be formed along the edge of the flexible frame 220. have. In this case, the coupling portion of the hinge segments 240 and the flexible frame 220 forms a neutral line with no change in length even when folding and unfolding of the flexible display unit 251 are performed. In a structure in which the flexible display unit 251 is disposed on the upper surface of the flexible frame 220, the flexible display unit 251 may be positioned at a neutral line of the flexible display device, and more detailed information will be described later.

On the other hand, the receiving groove 244 is formed on one side of the base portion 241, the protrusion 245 may be formed on the other side of the base portion 241. The receiving groove 244 is configured to receive the protrusion 245. More specifically, the protrusion 245 may be accommodated in the receiving groove 244 of the adjacent hinge segments 240 when the flexible display unit is unfolded. For example, the protrusion 245 is formed to support the inner wall of the receiving groove 244, through which the fastening force of the hinge segments 240 can be strengthened. In addition, in the process of folding the flexible display unit 251, the protrusion 245 may move in a direction away from the receiving groove 244. However, even in this case, the protrusion 245 may be a structure in which at least a portion is accommodated in the receiving groove 244. Through this structure, the hinge segments 240 may be supported with adjacent hinge segments.

The hinge portion 230 described above is a structure in which a neutral line is formed at an end portion of the hinge portion 230 to form a live hinge. Hereinafter, embodiments in which the hinge unit 230 is applied to the flexible display device will be described in more detail.

7 is a block diagram illustrating a flexible display device related to the present invention, and FIG. 8 is a conceptual diagram illustrating a flexible display device to which the hinge portion of FIG. 1 is applied.

The display device described herein includes a mobile phone, a smart phone, a laptop computer, a terminal for digital broadcasting, a personal digital assistants (PDA), a portable multimedia player (PMP), navigation, and a slate PC. , Tablet PC (tablet PC), ultrabook (ultrabook), wearable device (wearable device, for example, a watch-type terminal (smartwatch), a glass-type terminal (smart glass), a mobile terminal such as HMD (head mounted display)) May be included. Accordingly, as an example of the flexible display device, a mobile terminal capable of folding and unfolding is illustrated.

However, a configuration according to the embodiment described in the present specification can be easily recognized by those skilled in the art that the configuration may be applied to a fixed terminal such as a digital TV, a desktop computer, and a digital signage, except when applicable only to a mobile terminal. will be. Hereinafter, for convenience of description, the mobile terminal is described as one example of a flexible display device.

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 a power supply unit 190 ) And the like. The components shown in FIG. 7 are not essential for implementing a mobile terminal, so the mobile terminal described herein may have more or fewer components than those listed above.

More specifically, the wireless communication unit 110 among the components, between the mobile terminal 100 and the wireless communication system, between the mobile terminal 100 and another mobile terminal 100, or the mobile terminal 100 and an external server It may include one or more modules that enable wireless communication between. In addition, the wireless communication unit 110 may include one or more modules 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-range communication module 114, and a location information module 115. .

The input unit 120 may include a camera 121 for inputting a video signal or a video input unit, a microphone for inputting an audio signal (microphone 122), or an audio input unit, a user input unit 123 for receiving information from a user, for example , 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 one or more sensors 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 includes a proximity sensor 141, an illumination sensor 142, a touch sensor, an acceleration sensor, a magnetic sensor, and gravity G-sensor, gyroscope sensor, motion sensor, RGB sensor, infrared sensor (IR sensor), fingerprint scan sensor, ultrasonic sensor , Optical sensor (e.g., camera (see 121)), microphone (see 122), battery gauge, environmental sensor (e.g. barometer, hygrometer, thermometer, radioactivity sensor, Thermal sensor, gas sensor, and the like), and a chemical sensor (eg, an electronic nose, a health care sensor, a biometric sensor, etc.). Meanwhile, the mobile terminal disclosed in this specification may combine and use information sensed by at least two or more of these sensors.

The output unit 150 is for generating output related to vision, hearing, or tactile sense, and includes at least one of a display unit 151, an audio output unit 152, a hap tip module 153, and an optical output unit 154 can do. The display unit 151 may form a mutual layer structure with the touch sensor or may be integrally formed, thereby realizing 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 at the same time, provide an output interface between the mobile terminal 100 and the user.

The interface unit 160 serves as a passage with various types of external devices connected to the mobile terminal 100. The interface unit 160 connects a device equipped with a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, and an identification module. It may include at least one of a port, an audio input / output (I / O) port, a video input / output (I / O) port, and an earphone port. In the mobile terminal 100, in response to an external device being connected to the interface unit 160, appropriate control related to the connected external device may be performed.

In addition, the memory 170 stores data supporting various functions of the mobile terminal 100. The memory 170 may store a number of application programs or applications that are driven in the mobile terminal 100 and data and instructions for the operation of the mobile terminal 100. At least some of these applications can be downloaded from external servers via wireless communication. In addition, at least some of these application programs may exist on the mobile terminal 100 from the time of shipment for the basic functions of the mobile terminal 100 (for example, an incoming call, a calling function, a message reception, and a calling function). Meanwhile, the application program may be stored in the memory 170 and installed on the mobile terminal 100 to be driven by the controller 180 to perform an operation (or function) of the mobile terminal.

In addition to the operations related to the application program, the controller 180 generally controls the overall operation of the mobile terminal 100. The controller 180 may provide or process appropriate information or functions to the user by processing signals, data, information, etc. input or output through the above-described components or by driving an application program stored in the memory 170.

In addition, the controller 180 may control at least some of the components discussed with reference to FIG. 7 in order to drive the application program stored in the memory 170. Furthermore, the controller 180 may operate by combining at least two or more of the components included in the mobile terminal 100 for driving the application program.

Under the control of the controller 180, the power supply unit 190 receives external power and internal power to supply power to each component included in the mobile terminal 100. The power supply unit 190 includes a battery, and the battery may be a built-in battery or a replaceable battery.

At least some of the components may operate in cooperation with each other to implement an operation, control, or control method 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, before looking at various embodiments implemented through the mobile terminal 100 described above, the components listed above will be described in more detail with reference to FIG. 7.

First, referring to the wireless communication unit 110, the broadcast reception module 111 of the wireless communication unit 110 receives a broadcast signal and / or broadcast related information from an external broadcast management server through a broadcast channel. The broadcast channel may include a satellite channel and a terrestrial channel. Two or more broadcast receiving modules may be provided to the mobile terminal 100 for simultaneous broadcast reception or switching of broadcast channels for at least two broadcast channels.

The broadcast management server may refer to a server that generates and transmits broadcast signals and / or broadcast-related information or a server that receives previously generated broadcast signals and / or broadcast-related information and transmits them to a terminal. The broadcast signal may include a TV broadcast signal, a radio broadcast signal, and a data broadcast signal, as well as a TV broadcast signal or a radio broadcast signal combined with a data broadcast signal.

The broadcast signal may be encoded according to at least one of technical standards (or broadcast methods, for example, ISO, IEC, DVB, ATSC, etc.) for transmitting and receiving digital broadcast signals, and the broadcast receiving module 111 may The digital broadcast signal may be received using a method suitable for the technical standard determined by the technical standards.

The broadcast related information may mean information related to a broadcast channel, a broadcast program, or a broadcast service provider. The broadcast-related information may also be provided through a mobile communication network. In this case, it may be received by the mobile communication module 112.

The broadcast-related information may exist in various forms, such as Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB) or Electronic Service Guide (ESG) of Digital Video Broadcast-Handheld (DVB-H). The broadcast signal and / or broadcast-related information received through the broadcast receiving module 111 may be stored in the memory 160.

The mobile communication module 112 includes technology standards or communication methods for mobile communication (eg, Global System for Mobile Communication (GSM), Code Division Multi Access (CDMA), Code Division Multi Access 2000 (CDMA2000), EV -Enhanced Voice-Data Optimized or Enhanced Voice-Data Only (DO), Wideband CDMA (WCDMA), High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution (LTE), LTE-A (Long Term Evolution-Advanced) transmits and receives wireless signals to and from at least one of a base station, an external terminal, and a server on a mobile communication network constructed according to (Long Term Evolution-Advanced).

The wireless signal may include various types of data according to transmission and reception of a voice call signal, a video call signal, or a text / multimedia message.

The wireless Internet module 113 refers to a module for wireless Internet access, and may be built in or external to the mobile terminal 100. The wireless Internet module 113 is configured to transmit and receive wireless signals in a communication network according to wireless Internet technologies.

Wireless Internet technologies include, for example, WLAN (Wireless LAN), Wi-Fi (Wireless-Fidelity), Wi-Fi (Wireless Fidelity) Direct, DLNA (Digital Living Network Alliance), WiBro (Wireless Broadband), WiMAX (World) Interoperability for Microwave Access (HSDPA), High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution (LTE), Long Term Evolution-Advanced (LTE-A), and the wireless Internet module ( 113) transmits and receives data according to at least one wireless Internet technology in a range including the Internet technology not listed above.

In view of the wireless Internet access through WiBro, HSDPA, HSUPA, GSM, CDMA, WCDMA, LTE, LTE-A, etc., through the mobile communication network, the wireless Internet module 113 that performs wireless Internet access through the mobile communication network ) May be understood as a type of the mobile communication module 112.

The short-range communication module 114 is for short-range communication, Bluetooth (Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, NFC (Near) Field communication (Wireless-Fidelity), Wi-Fi Direct, Wi-Fi Direct, Wireless USB (Wireless Universal Serial Bus) technology can be used to support short-range communication. , Between the mobile terminal 100 and the wireless communication system via wireless area networks, between the mobile terminal 100 and another mobile terminal 100, or between the mobile terminal 100 and another mobile terminal 100, or The external server may support wireless communication between the networks where the local wireless network is located, and the short-range wireless communication network may be wireless personal area networks.

Here, the other mobile terminal 100 is a wearable device capable of exchanging data with (or interlocking with) the mobile terminal 100 according to the present invention (eg, a smartwatch), smart glasses (smart glass), HMD (head mounted display). The short-range communication module 114 may detect (or recognize) a wearable device capable of communicating with the mobile terminal 100 around the mobile terminal 100. Furthermore, when the sensed wearable device is a device authenticated to communicate with the mobile terminal 100 according to the present invention, the controller 180 may include at least a portion of data processed by the mobile terminal 100, the short-range communication module ( 114) to the wearable device. Therefore, the user of the wearable device can use data processed by the mobile terminal 100 through the wearable device. For example, according to this, the user performs a phone call through the wearable device when a call is received by the mobile terminal 100 or, when a message is received by the mobile terminal 100, the received message through the wearable device It is possible to check the message.

The location information module 115 is a module for obtaining a location (or current location) of a mobile terminal, and examples thereof include a Global Positioning System (GPS) module or a Wireless Fidelity (WiFi) module. For example, if the mobile terminal utilizes a GPS module, the location of the mobile terminal can be obtained by using a signal from a GPS satellite. As another example, if the mobile terminal utilizes a Wi-Fi module, the location of the mobile terminal may be obtained based on information of a Wi-Fi module and a wireless access point (AP) that transmits or receives a wireless signal. If necessary, the location information module 115 may perform any function of other modules of the wireless communication unit 110 in order to obtain data regarding the location of the mobile terminal by substitution or additionally. The location information module 115 is a module used to acquire the location (or current location) of the mobile terminal, and is not limited to a module that directly calculates or acquires the location of the mobile terminal.

Next, the input unit 120 is for input of image information (or signals), audio information (or signals), data, or information input from a user. For input of image information, the mobile terminal 100 is one Alternatively, a plurality of cameras 121 may be provided. The camera 121 processes image frames such as still images or moving pictures obtained by an image sensor in a video call mode or a shooting mode. The processed image frame may be displayed on the display unit 151 or stored in the memory 170. Meanwhile, the plurality of cameras 121 provided in the mobile terminal 100 may be arranged to form a matrix structure, and through the camera 121 forming the matrix structure, various angles or focuses may be applied to the mobile terminal 100. A plurality of image information may be input. Also, the plurality of cameras 121 may be arranged in a stereo structure to acquire left and right images for realizing a stereoscopic image.

The microphone 122 processes external sound signals as electrical voice data. The processed voice data may be used in various ways according to a function (or a running application program) being performed by the mobile terminal 100. Meanwhile, various noise reduction algorithms for removing noise generated in the process of receiving an external sound signal may be implemented in the microphone 122.

The user input unit 123 is for receiving information from the user. When information is input through the user input unit 123, the controller 180 may control the operation of the mobile terminal 100 to correspond to the input information. . The user input unit 123 is a mechanical input means (or a mechanical key, for example, a button located on the front, rear or side of the mobile terminal 100, a dome switch, a jog wheel, Jog switch, etc.) and a touch input means. As an example, the touch-type input means is made of a virtual key, a soft key or a visual key displayed on the touch screen through software processing, or a part other than the touch screen It may be made of a touch key (touch key) disposed on. Meanwhile, the virtual key or the visual key may be displayed on the touch screen while having various forms, for example, a graphic, text, icon, video, or the like. It can be made of a combination of.

Meanwhile, 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 sensing signal corresponding thereto. The controller 180 may control driving or operation of the mobile terminal 100 based on the sensing signal, or perform data processing, function, or operation related to an application program installed in the mobile terminal 100. 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 or absence of an object approaching a predetermined detection surface or an object in the vicinity using mechanical force or infrared light without mechanical contact. The proximity sensor 141 may be provided with the proximity sensor 141 in the inner region of the mobile terminal or the proximity of the touch screen surrounded 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 type proximity sensor, a magnetic type proximity sensor, and an infrared proximity sensor. When the touch screen is capacitive, the proximity sensor 141 may be configured to detect the proximity of the object with a change in electric field according to the proximity of the conductive object. In this case, the touch screen (or touch sensor) itself may be classified as a proximity sensor.

On the other hand, for convenience of description, the act of allowing the object to be recognized as being located on the touch screen without being touched on the touch screen is called a "proximity touch", and the touch The act of actually touching an object on the screen is called "contact touch". The location where an object is in close touch on the touch screen means a location where the object is perpendicular to the touch screen when the object is in close touch. The proximity sensor 141 may detect a proximity touch and a proximity touch pattern (eg, proximity touch distance, proximity touch direction, proximity touch speed, proximity touch time, proximity touch position, proximity touch movement state, etc.). have. Meanwhile, as described above, the controller 180 processes data (or information) corresponding to the proximity touch operation and the proximity touch pattern detected through the proximity sensor 141, and further, visual information corresponding to the processed data. It can be output on the touch screen. Furthermore, the controller 180 may control the mobile terminal 100 such that different operations or data (or information) are processed according to whether a touch on the same point on the touch screen is a proximity touch or a touch touch. .

The touch sensor detects a touch (or touch input) applied to the touch screen (or display unit 151) using at least one of various touch methods such as a resistive film method, a capacitive method, an infrared method, an ultrasonic method, and a magnetic field method. do.

As an example, the touch sensor may be configured to convert a change in pressure applied to a specific portion of the touch screen or capacitance generated in the specific portion into an electrical input signal. The touch sensor may be configured to detect a location, an area, a pressure when a touch is touched, a capacitance when a touch object is touched on the touch screen, and the like. Here, the touch object is an object that applies a touch to the touch sensor, and may be, for example, a finger, a touch pen or a stylus pen, a pointer, and the like.

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

Meanwhile, the controller 180 may perform different controls or perform the same control according to the type of the touch object that touches the touch screen (or a touch key provided in addition to the touch screen). Whether to perform different control or the same control according to the type of the touch object, it may be determined according to the current operating state of the mobile terminal 100 or an application program being executed.

On the other hand, the touch sensors and proximity sensors described above are independently or in combination, such as short (or tap) touch on the touch screen, long touch, multi touch, drag touch ), Flick touch, pinch-in touch, pinch-out touch, swipe touch, hovering touch, etc. You can sense the touch.

The ultrasonic sensor may recognize location information of a sensing target using ultrasonic waves. Meanwhile, the control unit 180 may calculate the position of the wave generating source through information sensed by the optical sensor and the plurality of ultrasonic sensors. The position of the wave generator can be calculated by using a property in which light is much faster than ultrasonic waves, that is, a time when light reaches the optical sensor is much faster than a time when ultrasonic waves reach the ultrasonic sensor. More specifically, the position of the wave generator may be calculated by using a time difference from the time at which the ultrasound reaches the light as a reference signal.

On the other hand, the camera 121, which is considered as the configuration of the input unit 120, includes at least one of a camera sensor (eg, CCD, CMOS, etc.), a photo sensor (or image sensor), and a laser sensor.

The camera 121 and the laser sensor are combined with each other to detect a touch of a sensing target for a 3D stereoscopic image. The photo sensor may be stacked on a display element, which is configured to scan the movement of the sensing object close to the touch screen. More specifically, the photo sensor mounts photo diodes and TRs (transistors) in rows / columns to scan the contents placed on the photo sensor using electrical signals that change according to the amount of light applied to the photo diode. That is, the photo sensor performs coordinate calculation of the sensing object according to the change amount of light, and through this, location information of the sensing object may be obtained.

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 user interface (UI) or graphical user interface (GUI) information according to the execution screen information. .

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

A three-dimensional display method such as a stereoscopic method (glasses method), an auto stereoscopic method (glasses-free method), or a projection method (holographic method) may be applied to the stereoscopic display unit.

The audio 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, call mode or recording mode, voice recognition mode, broadcast reception mode, or the like. The sound output unit 152 may also output sound signals related to functions (eg, call signal reception sound, message reception sound, etc.) performed in the mobile terminal 100. The sound 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 tactile effect generated by the haptic module 153 may be vibration. The intensity and pattern of vibration generated in the haptic module 153 may be controlled by a user's selection or setting of the controller 180. For example, the haptic module 153 may synthesize different vibrations and output them sequentially or sequentially.

In addition to vibration, the haptic module 153 is used for stimulation such as pin arrangement that vertically moves with respect to the contact skin surface, jet or suction power of air through a jet or intake, grazing on the skin surface, contact with an electrode, and electrostatic force. Various tactile effects can be generated, such as an effect and an effect of reproducing a feeling of cold and warm using an element capable of absorbing heat or generating heat.

The haptic module 153 may not only deliver a tactile effect through direct contact, but may also be implemented so that the user can feel the tactile effect through muscle sensations such as fingers or arms. Two or more haptic modules 153 may be provided according to a configuration aspect 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 generated in the mobile terminal 100 may include receiving messages, receiving call signals, missed calls, alarms, schedule notifications, receiving emails, and receiving information through applications.

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. The signal output may be terminated by the mobile terminal detecting the user's event confirmation.

The interface unit 160 serves as a passage with all external devices connected to the mobile terminal 100. The interface unit 160 receives data from an external device, receives power, transfers it to each component inside the mobile terminal 100, or allows data inside the mobile terminal 100 to be transmitted to the external device. For example, a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device equipped with an identification module (port), audio I / O (Input / Output) port, video I / O (Input / Output) port, earphone port, and the like may be included in the interface unit 160.

On the other hand, the identification module is a chip that stores various information for authenticating the usage rights of the mobile terminal 100, a user identification module (UIM), a subscriber identity module (SIM), universal user authentication It may include a module (universal subscriber identity module; USIM). The device provided with the identification module (hereinafter referred to as 'identification device') may be manufactured in a smart card format. Accordingly, the identification device may be connected to the terminal 100 through the interface unit 160.

In addition, when the mobile terminal 100 is connected to an external cradle, the interface unit 160 becomes a passage through which power from the cradle is supplied to the mobile terminal 100 or is input by the user from the cradle. Various command signals may be passages to the mobile terminal 100. Various command signals or power inputted from the cradle may be operated as signals 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 may temporarily store input / output data (eg, a phone book, a message, a still image, a video, etc.). The memory 170 may store data related to various patterns of vibration and sound output when a touch is input on the touch screen.

The memory 170 is 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, etc.), random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read (EPMROM) It may include a storage medium of at least one type of -only memory (PROM), programmable read-only memory (PROM), magnetic memory, magnetic disk and optical disk. The mobile terminal 100 may be operated in connection with a web storage performing a storage function of the memory 170 on the Internet.

On the other hand, as described above, the controller 180 controls the operation related to the application program and the overall operation of the mobile terminal 100 in general. For example, when the state of the mobile terminal satisfies a set condition, the controller 180 may execute or release a lock state that restricts input of a user's control command to applications.

In addition, the controller 180 performs control and processing related to voice calls, data communication, video calls, etc., or performs pattern recognition processing capable of recognizing handwriting input or drawing input on the touch screen as text and images, respectively. Can be. Furthermore, in order to implement various embodiments described below on the mobile terminal 100 according to the present invention, the controller 180 may control any one or a combination of the above-described components.

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power required for the operation of each component. The power supply unit 190 includes a battery, and the battery may be a built-in battery made to be rechargeable, and may be detachably coupled to a terminal body for charging and the like.

Further, the power supply unit 190 may include a connection port, and the connection port may be configured as an example of the interface 160 to which an external charger that supplies power for charging the battery is electrically connected.

As another example, the power supply unit 190 may be configured to charge the battery wirelessly without using the connection port. In this case, the power supply unit 190 uses one or more of an inductive coupling method based on a magnetic induction phenomenon from an external wireless power transmission device or a magnetic resonance coupling method based on an electromagnetic resonance phenomenon. Power can be delivered.

Meanwhile, various embodiments below may be implemented in a recording medium readable by a computer or a similar device using, for example, software, hardware, or a combination thereof.

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 user interface (UI) or graphical user interface (GUI) information according to the execution screen information. .

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

Also, two or more display units 151 may be present depending on the implementation form of the mobile terminal 100. In this case, a plurality of display units may be spaced apart from one surface or integrally disposed in the mobile terminal 100, or may be respectively disposed on different surfaces.

The display unit 151 may include a touch sensor that senses a touch on the display unit 151 so that a control command can be input by a touch method. Using this, when a touch is made to the display unit 151, the touch sensor detects the touch, and the controller 180 can be configured to generate 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, or an instruction or designable menu item in various modes.

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

The interface unit 160 is a passage through which the mobile terminal 100 can be connected to an external device. For example, the interface unit 160 is a connection terminal for connection with other devices (eg, earphones, external speakers), a port for short-range communication (for example, an infrared port (IrDA Port), a Bluetooth port (Bluetooth) Port, Wireless LAN Port, etc.], or at least one of a power supply terminal for supplying power to the mobile terminal 100. The interface unit 160 may be implemented in the form of a socket that accommodates an external card such as a subscriber identification module (SIM) or a user identity module (UIM) or a memory card for storing information.

The terminal body may be provided with at least one antenna for wireless communication. The antenna may be built in the terminal body or may be formed in the case. For example, the antenna forming part of the broadcast receiving module 111 (see FIG. 7) may be configured to be pulled out from the terminal body. Alternatively, the antenna may be formed of a film type and attached to an inner surface of the housing, 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. 7) for supplying power to the mobile terminal 100. The power supply unit 190 may include a battery 191 built in the terminal body or configured to be 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. Also, the battery 191 may be configured to be wirelessly charged through a wireless charger. The wireless charging may be implemented by a magnetic induction method or a resonance method (magnetic resonance method).

An accessory that protects the appearance or assists or expands the function of the mobile terminal 100 may be added to the mobile terminal 100. An 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 expand the function of the mobile terminal 100 in conjunction with the display unit 151. Another example of an accessory is a touch pen for assisting or extending a touch input to a touch screen.

8 is a conceptual diagram for describing a mobile terminal having a flexible display as a flexible display device. The mobile terminal 200 according to the present invention includes a flexible display unit 251 made to be deformable by external force.

 The deformation may be at least one of bending, bending, folding, twisting, and curling of the display module. Such a deformable display module may be referred to as a 'flexible display'. Here, the flexible display unit 251 may include both a general flexible display, an e-paper, and a combination thereof.

A general flexible display refers to a durable display that is light and easy to break, being made on a thin and flexible substrate that can bend, bend, fold, twist, or curl like paper, while maintaining the characteristics of a conventional flat panel display.

In addition, the electronic paper is a display technology to which general ink characteristics are applied, and the point of using reflected light may be different from a conventional flat panel display. The electronic paper can change information using a twist ball or electrophoresis using a capsule.

The flexible display unit 251 may be unfolded in the first state described above and folded in the second state. As illustrated, information displayed in the second state may be visual information output on a curved surface. This visual information is realized by independently controlling the light emission of sub-pixels arranged in a matrix form. The unit pixel refers to a minimum unit for realizing one color.

The flexible display unit 251 may be placed in a curved state (for example, a vertically or horizontally curved state) rather than a flat state in the first state. In this case, when an external force is applied to the flexible display unit 251, the flexible display unit 251 may be transformed into a flat state (or a less curved state) or a more curved state.

Meanwhile, the flexible display unit 251 may be combined with a touch sensor to implement a flexible touch screen. When a touch is made on the flexible touch screen, the controller 180 (see FIG. 7) may perform control corresponding to the touch input. The flexible touch screen may be configured to sense a touch input in the first state as well as the second state.

On the other hand, the mobile terminal 200 according to the present modification example may be provided with a deformation detecting means capable of detecting deformation of the flexible display unit 251. The deformation detecting means may be included in the sensing unit 140 (see FIG. 7).

The deformation detecting means is provided on the flexible display unit 251 or the bodies 201 and 202 to detect information related to deformation of the flexible display unit 251. Here, the information related to the deformation may be a direction in which the flexible display unit 251 is deformed, a deformed degree, a deformed position, a deformed time, an acceleration at which the deformed flexible display unit 251 is restored, and the like. In addition, it may be a variety of information that can be detected due to the bending of the flexible display unit 251.

In addition, the controller 180 (refer to FIG. 7) changes or moves information displayed on the flexible display unit 251 based on information related to the deformation of the flexible display unit 251 sensed by the deformation detecting means. A control signal for controlling the function of the terminal 200 may be generated.

Deformation of the state of the flexible display unit 251 is not limited only to external force. For example, when the flexible display unit 251 has a first state, it may be transformed into a second state by a user or an application command.

The mobile terminal 200 according to an embodiment of the present invention may include a housing made of folding and unfolding. The housing may be a case (eg, frame, cover, etc.) forming the appearance of the mobile terminal. The housing is provided with a plurality of cases, and various electronic components are disposed in the inner space formed by the combination of these.

According to the drawing, the housing may be provided on the first and second bodies 201 and 202, which are rotatably connected to each other. The flexible display unit 251 is coupled to one surface of the housing and is formed to be deformable. Here, the body may be understood as a concept of referring to the mobile terminal 100 as at least one aggregate.

The first body 201 supports one region of the flexible display unit 251, and the second body 202 supports another region (the remaining region) of the flexible display unit 251. A plurality of electronic components for driving the mobile terminal 200 are mounted on at least one area of the first and second bodies 201 and 202.

The first and second bodies 201 and 202 rotate relative to each other while forming an angle in a state in which they are connected to each other, so that the flexible display unit 251 is bent, and the flexible display unit 251 has at least one area. The folded state (folded state, second state) is folded so as to overlap.

8 (a) is a conceptual diagram illustrating an unfolding (unfolded state, a first state) in which the flexible display unit 251 is opened, and FIG. 8 (b) is a view of the flexible display unit 251 folded It is a conceptual diagram showing folding (second state) which is a state.

Although only the first and second states are illustrated in the drawing, there is also a state in which an angle formed between one area of the flexible display unit 251 and the other area is varied while being transformed from the first state to the second state. .

In the second state, the first and second bodies 201 and 202 overlap each other, and a space between the one area and the other area of the flexible display unit 251 is curved while forming a curved surface. In this case, a portion forming the curved surface may be the bent portion 252. That is, the flexible display unit 251 may be formed with a bending portion 252 that is bent by folding of the housing 210.

Meanwhile, in the mobile terminal, the first and second bodies 201 and 202 may be rotatably connected to each other by the hinge part 230. That is, the hinge part 230 connects the first and second bodies 201 and 202 to be relatively rotatable, and is disposed between the first and second bodies 201 and 202. The flexible display unit 251 is disposed on one surface of the first and second bodies 201 and 202 and is folded and unfolded by the relative rotation.

In this case, the hinge portion 230 may have the structure of the hinge portion described above with reference to FIGS. 1 to 6.

For example, the hinge segments 240 of the hinge part 230 connect the first and second bodies 201 and 202 to be capable of relative rotation, and the flexible display part 251 is connected to the relative rotation. It is made to fold and unfold. In this case, in this example, the flexible frame 220 is disposed on the rear surface of the flexible display unit 251 to fold and unfold together with the flexible display unit 251.

In the foldable mobile terminal 200, there is a limit to the bending radius of the flexible display. Therefore, it is necessary to consider the difference between the length of the bent portion 252 and the plane length in folding and unfolding operations. In order to offset such a change in length, in this example, the flexible display unit 251 is coupled to the hinge segments 240 and the flexible frame 220 so that the rotation centers of the hinges are disposed on both sides of the flexible display unit 251. Posted among them.

For example, a flexible frame 220 may be disposed on the rear surface of the flexible display unit 251. The flexible frame 220 may be formed to have the same or smaller size than the flexible display unit 251 in the X direction. Accordingly, protrusions 242 of the hinge segments 240 may be disposed on both sides of the flexible display unit 251 and the flexible frame 220, respectively. However, the present invention is not necessarily limited to this, and the flexible frame 220 may be slightly larger than the flexible display unit 251 in the X direction.

The first flexible portion 221 of the flexible frame 220 (refer to FIG. 6 below) is formed in the middle portion of the flexible frame 220 to support the bent portion 252 of the flexible display unit 251. The rigid potion 226 (refer to FIG. 6 below) is disposed to cover the first body 201 and the second body 202, and supports the flexible display unit 251 on both sides of the bent portion 252 in a flat state. . At this time, protrusions 242 of the hinge segments 240 may be disposed at both corners of the first flexible portion 221, respectively.

According to the illustration, when the second body 202 is superimposed on the first body 201, the flexible display unit 251 is bent by an external force. The first flexible portion 221 is bent at a first curvature, the second flexible portion 222 (see FIG. 6 below) is bent at a second curvature, and the rigid potions 226 are disposed to face each other. In this case, since the hinge portions 230 are disposed on both sides of the flexible frame 220, the curved cross-sectional shape of the first flexible portion 221 may overlap the rotation center of the hinge portion 230. In another aspect, a curved cross-sectional shape of the bent portion 252 of the flexible display unit 251 may overlap the rotation center of the hinge portion 230. At this time, the center of rotation may be a part of the other end or protrusion 242 of the hinge segments 240 in the above-described structure of the hinge part 230.

When folding and unfolding the flexible display unit 251, a neutral line NL of the plurality of hinge segments 240 having no change in length is formed along the other end. The hinge segments 240 are sequentially coupled to the edge of the flexible frame 220 at the other end so that the neutral line NL is located at the edge of the flexible frame 220. Referring to the above-described example, the other end may be specifically a protrusion 242 of the hinge segments 240.

As described above, since the edge of the flexible frame 220 is combined with a portion of the other end or protrusion 242 of the hinge segments 240, the rotation center may be formed along the edge of the flexible frame 220. have. In this case, the coupling portion of the hinge segments 240 and the flexible frame 220 forms a neutral line NL having no change in length even when folding and unfolding of the flexible display unit 251 occurs. The neutral line NL becomes a rotation center of the hinge segments 240. In addition, since the flexible display unit 251 is disposed on the upper surface of the flexible frame 220, the flexible display unit 251 is positioned at the rotation center of the hinge segments 240.

9A and 9B, since the flexible display unit 251 is disposed on the front surfaces of the first body 201 and the second body 202 facing each other during folding, unfolding is performed. While the state is changed from folding to folding, the change in the spacing of the hinge segments 240 increases as the distance from the front surface increases. According to this structure, the flexible display unit can be located at the neutral line NL of the flexible display device.

Compared to FIG. 9B showing a conventional multi-axis hinge, in a structure in which the rotation center is formed around the hinge axis, the neutral line NLa of the flexible display device is formed along the rotation axis RA. Therefore, a neutral line is formed at a position spaced apart from the flexible display unit 251a. On the other hand, in this example, as shown in FIG. 9A (b), the edge of the flexible frame 220 becomes the rotation center of the hinge part 230, so the neutral line NL of the flexible display device is the flexible frame 220 ). In this case, the flexible frame 220 is thin, so that the flexible display unit 251 is positioned at the neutral line NL of the flexible display device.

In the above, the positional relationship of the flexible frame 220, the flexible display unit 251, and the hinge unit 230 has been described, but the present invention is not necessarily limited thereto, and a configuration without the flexible frame 220 is also possible. Do.

Meanwhile, one of the first body 201 and the second body 202 is formed with a body protrusion 245 accommodated in the receiving groove 244 provided in any one of the hinge segments 240. In addition, a body groove into which the protrusion 245 provided in the other of the hinge segments 240 is inserted may be formed in the other of the first body 201 and the second body 202. Through this structure, the hinge segments 240 may be disposed between the first body 201 and the second body 202. As a more specific example, a body groove 201a is formed at an end close to the hinge portion 230 in the first body 201, and the protrusion of the outermost hinge segment 246 of the hinge segments 240 is ( 245) is accommodated in the body groove (201a). On the other hand, a body protrusion 245 is formed at an end close to the hinge part 230 in the second body 202, and the body protrusion 245 is the outermost outermost hinge segment of the hinge segments 240. It can be accommodated in the receiving groove 244 of (247).

On the other hand, referring to FIG. 9A together with 8, the first body 201 and the second body 202 are gradually spaced apart between the second state than the first state changing from the unfolding state to the folding state. do. In this case, in the second state, a space between the ends of the first body 201 and the second body 202 increases. In the course of folding of the flexible display unit 251, the protrusion 245 moves in a direction away from the receiving groove 244, but even in this case, the protrusion 245 has at least a portion of the receiving groove 244. It is accommodated, through which the interspace can be covered by the hinge segment 240. Therefore, according to the above structure, there is no need for a separate cover member, and a new mechanism is provided to cover the space between the bodies while being slim in the flexible display device.

In the above, the case in which the hinge portion of the present invention is applied to the two-stage folding structure has been described, but the hinge portion can be expanded to a three-stage folding structure. Hereinafter, the three-stage folding structure will be described in more detail with reference to the drawings.

FIG. 10 is a conceptual diagram for explaining another embodiment of the flexible display device to which the hinge portion of the present invention is applied, FIG. 11 is an operation diagram showing the operation of the flexible display device of FIG. 10, and FIG. 12 is a view of the flexible display device of FIG. 10 13 and 14 are exploded views and cross-sectional views showing a modified example of the flexible display device of FIG. 10.

The mobile terminal according to the present example may include a base body 303, a first body 301, and a second body 302 together with a flexible display unit 351 made to be deformable by external force.

The base body 303 may be a body wrapped by the flexible display unit when folding the flexible display unit.

The base body 303 includes a case (eg, frame, housing, cover, etc.) forming an exterior. As shown, the base body 303 may include a front case and a rear case. Various electronic components are arranged in the inner space formed by the combination of the front case and the rear case. In particular, such electronic components may include non-flexible components such as a battery, a main circuit board, an identification module, a memory card, an audio output unit, and a microphone. In this case, at least one middle case may be additionally disposed between the front case and the rear case. These cases may be formed by injection of synthetic resin or may be formed of metal, for example, stainless steel (STS), aluminum (Al), titanium (Ti), or the like.

A protruding border 304 may be formed along the edge of the base body 303 to provide a space around the flexible display unit 351 on the base body 303. The protruding border 304 is formed to face the edge of the flexible display unit 351 while the flexible display unit 351 surrounds the base body 303.

According to the drawing, the flexible display unit 351 is rotatably connected to one side of the base body 303. At least a portion of the other side of the base body 303, which is the opposite side of the one side of the base body 303, is formed as a curved surface, and the hinge segments 240 of the hinge portion 230 described above are the flexible display portion 351 In the state surrounding the base body 303, it is sequentially arranged along the curved surface of the base body 303. According to this structure, as shown in FIG. 11, in addition to the first state in which the flexible display unit 351 is unfolded and the second state in which the flexible display unit folds, the flexible display unit 351 is provided with a base body 303. A third state folded while being wrapped may be defined. In this case, the second state means a state in which the flexible display unit does not wrap the base body 303 or a folded state.

As a more specific example, the housing may be provided on the first and second bodies 301 and 302, respectively, which are rotatably connected to each other. The flexible display unit 351 is coupled to one surface of the housing and is formed to be deformable.

The first body 301 supports one region of the flexible display unit 351, and the second body 302 supports another region (the remaining region) of the flexible display unit 351. A plurality of electronic components for driving the mobile terminal 300 is mounted on at least one area of the first and second bodies 301 and 302.

The first and second bodies 301 and 302 are connected and rotate relative to each other at an angle in the first state, and the flexible display unit 351 is bent through this, and the second state is switched to the second state. In this case, when the flexible display unit 351 wraps around the base body 303, it is in a third state. For this operation, the first body 301 is rotatably coupled to the base body 303. For example, a base hinge part 360 having a hinge axis is disposed between the first body 301 and the base body 303, and the first body and the base body 303 are centered around the hinge axis. Relative rotation. As such, the first body 301 is rotatably coupled to the base body 303. Meanwhile, an elastic force providing unit for pulling the flexible display unit 351 may be disposed on the second body 302.

In the second state and the third state, the first and second bodies 301 and 302 overlap each other, and a space between the one area and the other area of the flexible display unit 351 is curved. It is bent as it is achieved. In this case, a portion forming the curved surface may be the bent portion 352. That is, the flexible display unit 351 may be formed with a bent portion 352 that is bent by folding of the housing.

Meanwhile, in the mobile terminal, the first and second bodies 301 and 302 may be rotatably connected to each other by a hinge part 230. That is, the hinge part 230 connects the first and second bodies 301 and 302 to be relatively rotatable, and is disposed between the first and second bodies 301 and 302. The flexible display unit 351 is disposed on one surface of the first and second bodies 301 and 302 and is folded and unfolded by the relative rotation.

In this case, the hinge portion 230 may have the structure of the hinge portion described above with reference to FIGS. 1 to 6. Accordingly, in this example, the hinge segments 240 connect the first body 301 and the second body 302 to be capable of relative rotation, through which the first body 301 and the second body 302 In the third state, each side of the base body 303 is covered. In addition, the hinge segments 240 surround the end of the base body 303 on the opposite side to the base hinge portion 360 in a third state. That is, the base hinge portion 360 is disposed at one end of the base body 303, and the other end portion of the base body 303 is formed as a curved surface so that the hinge segments 240 can be wrapped. According to such a structure, the flexible display unit 351 covers the base body 303 in a third state, surrounds the base body 303, and implements a three-stage inner folding type flexible display device. .

Meanwhile, in this example, in order to prevent the hinge segments 340 from being separated from the flexible frame due to external impact or the like, a separate complementary structure may be provided. 13 and 14, a through hole 348 is formed in the base portion 341 of the hinge segments 340, and an elastic member 370 can be inserted into the through hole 348.

The elastic member 370 may be a super-elastic wire, a flexinol wire, a shape memory alloy wire, or the like. The elastic member 370 has one end fixed to the first body 301 and the other end fixed to the second body 302, and is disposed to penetrate the through hole 348. In addition, the elastic member 370 is composed of a plurality, it may be sequentially arranged along the Y direction.

The separation complementary structure of the three-stage inner folding type flexible display device and the hinge segments 340 applicable to the examples of the present invention has been described above. On the other hand, the hinge portion of the present invention is also applicable to a flexible display device of a three-stage outer folding type, which will be described below.

15 is a conceptual diagram illustrating another embodiment of a flexible display device to which the hinge portion of the present invention is applied.

The mobile terminal according to the present example is similar to the example described with reference to FIGS. 10 to 12, together with the flexible display unit 451 configured to be deformable by external force, the base body 403, the first body 401 and A second body 402 may be provided.

The base body 403 may be a body wrapped by the flexible display unit 451 when the flexible display unit 451 is folded, and a detailed description thereof will be provided with reference to FIGS. 10 to 12. To replace.

Also in this example, the flexible display unit 451 is rotatably connected to one side of the base body 403. At least a portion of the other side of the base body 403 that is opposite to one side of the base body 403 is formed as a curved surface, and the hinge segments 440 of the hinge portion 430 described above are the flexible display portion 451. In the state surrounding the base body 403, it is sequentially arranged along the curved surface of the base body 403. According to this structure, in addition to the first state in which the flexible display unit 451 is unfolded and the second state in which the flexible display unit 451 is unfolded, as in the above example, the flexible display unit 451 wraps around the base body 403 and is folded. The third state can be defined. However, in this example, the rear surfaces of the first and second bodies in which the flexible display unit 451 is disposed such that the flexible display unit 451 is exposed to the outside in a third state is covered with the base body 403. .

In the mobile terminal, the first and second bodies 201 and 202 may be rotatably connected to each other by the hinge portion 430 of the present invention. However, in this case, the neutral line of the hinge part may be formed outside the hinge segments 440.

More specifically, the neutral line of the plurality of hinge segments 440 having no change in length during folding and unfolding of the flexible display unit 451 is formed along the other end of the hinge segments 440, In the third state, the other end is disposed farther than one end of the hinge segments 240 from the base body 403.

In this case, one end of the plurality of hinge segments 440 may be changed to be closer to each other when folded. Accordingly, the hinge segments 440 may be formed such that the distance of the one end portion becomes farther in the first state than in the second state or the third state. According to the structure of the hinge segments 440, a flexible display device of a three-stage outer folding type can be implemented.

The flexible display device described above is not limited to the configuration and method of the above-described embodiments, and the above embodiments are configured by selectively combining all or part of each embodiment so that various modifications can be made. It may be.

Claims (20)

1. A flexible display unit formed to be deformable;

   A flexible frame disposed on a rear surface of the flexible display unit to fold and unfold together the flexible display unit; And

   It includes a plurality of hinge segments connected to the flexible frame,

   The hinge segments are sequentially arranged along the edge of the flexible frame, and the flexible display device is characterized in that it is combined with the flexible frame at the other end so that a gap of one end is changed by folding and unfolding of the flexible display unit.
2. According to claim 1,

   A flexible display device characterized in that a neutral line of the plurality of hinge segments having no change in length during folding and unfolding of the flexible display unit is formed along the other end.
3. According to claim 2,

   The flexible display device, wherein the plurality of hinge segments are combined with the edge at the other end so that the neutral line is located at the edge of the flexible frame.
4. According to claim 1,

   Each of the hinge segments has a base portion and a projection portion protruding from the base portion to form the other end portion,

   The flexible display device, characterized in that the side of the protrusion is coupled to the edge of the flexible frame.
5. According to claim 4,

   The base portion is disposed to face the rear surface of the flexible frame,

   The protruding portion protrudes from both sides of the base portion to be higher than the rear surface of the flexible frame with respect to the base portion.
6. According to claim 4,

   The receiving groove is formed on one side of the base portion,

   The flexible display device is formed on the other side of the base portion when the flexible display portion is unfolded to form a protrusion accommodated in a receiving groove of adjacent hinge segments.
7. The method of claim 6,

   When the flexible display unit is folded, the flexible display device moves in a direction away from the receiving groove of the adjacent hinge segments.
8. According to claim 1,

   The flexible frame includes a flexible area in which through-holes are repeatedly arranged,

   The hinge segments are disposed to overlap the flexible area.
9. According to claim 1,

   Each of the hinge segments and the flexible frame is formed of a metal material,

   A flexible display device comprising a joint having a brazing welding agent disposed between the hinge segments and the flexible frame.
10. The method of claim 9,

    The flexible frame is formed of titanium, stainless steel or an amorphous alloy, and the hinge segments are made of stainless steel.
11. The method of claim 9,

    The brazing welding agent comprises an amorphous alloy flexible display device.
12. According to claim 1,

    The flexible display unit further includes a first body and a second body on which it is disposed,

    The hinge segments connect the first body and the second body to enable relative rotation, and the flexible display unit is folded and unfolded by the relative rotation.
13. The method of claim 12,

    The flexible display unit is disposed on the front surface of the first body and the second body facing each other when the flexible display unit is folded,

    The flexible display device, characterized in that the gap change of the hinge segments increases as the distance away from the front.
14. The method of claim 12,

    Body protrusions accommodated in the receiving groove provided in any one of the hinge segments are formed in one of the first body and the second body,

    The flexible display device of claim 1, wherein a body groove into which a protrusion provided in the other of the hinge segments is inserted is formed in the other of the first body and the second body.
15. According to claim 1,

    When folding the flexible display unit, further comprising a base body wrapped by the flexible display unit,

    The flexible display device is characterized in that the flexible display unit is rotatably connected to one side of the base body.
16. The method of claim 15,

    At least a portion of the other side of the base body that is opposite to one side of the base body is formed as a curved surface,

    The hinge segments are flexible display device, characterized in that the flexible display unit is sequentially arranged along the curved surface of the base body in a state surrounding the base body.
17. The method of claim 16,

    The flexible display unit further includes a first body and a second body on which it is disposed,

    The hinge segments connect the first body and the second body so as to be rotatable, and the first body and the second body cover each side of the base body when the flexible display unit surrounds the base body. Flexible display device.
18. According to claim 1,

    A flexible display device characterized in that a through hole is formed in the hinge segment and an elastic member is inserted into the through hole.
19. A first body and a second body;

    A hinge part connecting the first body and the second body to be capable of relative rotation;

    A flexible display unit disposed on one surface of the first body and the second body and folding and unfolding by the relative rotation; And

    It is disposed on the back of the flexible display unit, and includes a flexible frame for folding and unfolding together with the flexible display unit,

    The hinge portion has a plurality of hinge segments that are sequentially coupled to the edge of the flexible frame at an end so that a neutral line of the hinge portion having no change in length due to folding and unfolding of the flexible display portion is formed at the edge of the flexible frame. Flexible display device, characterized in that.
20. The method of claim 19,

    The hinge segments are sequentially brazed to the edge of the flexible frame, characterized in that the flexible display device.

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