KR20140117182A - Display apparatus - Google Patents

Abstract

A display device according to an embodiment of the present invention comprises a display module forming an image; and a changeable member changing the shape of the display module. The changeable member comprises a transforming unit located adjacent to the display module and providing power for transforming the display module, and a driving unit changing the central angle of the transforming unit.

Description

Display device {DISPLAY APPARATUS}

The present invention relates to a display device, and more particularly, to a display device having an improved structure.

Various types of display devices for realizing images are used. For example, there are various displays such as a liquid crystal display panel, a plasma display panel, and an organic light emitting diode display panel.

2. Description of the Related Art [0002] As the field of use of display devices is gradually expanded, various characteristics are required in various fields of use, and there is an increasing demand for not only characteristics related to displaying images, but also three- In order to satisfy such various demands, studies for improving the structure of the display device in various forms are continuing.

The present invention is intended to provide a display device improved in structure to improve viewing.

A display device according to an embodiment of the present invention includes: a display module in which an image is implemented; And a deformable member for changing the shape of the display module. The deformable member includes a deforming portion adjacent to the display module for providing a force for changing the shape of the display module, and a driving portion changing a center angle of the deforming portion.

The display device according to the present embodiment can change the shape of the display module so as to improve the satisfaction of the viewer. At this time, the deformable portion can be easily deformed, and the degree of deformation of the deformable portion, the deformation time, and the like can be precisely controlled by using a driving unit that provides mechanical energy for changing the shape of the display module. Further, the power unit constituting the driving unit can be implemented in a small size using a motor (more precisely, an ultrasonic motor) and a speed reducer, and the shape of the display module can be changed without noise. The moving part transmits the energy of the power part to the deformable part so that the deformed part can be deformed into a desired shape.

Further, the deformed portion can have a simple structure because the center angle is deformed according to the change, and can be easily deformed by the driving portion.

1 is a front perspective view of a display device according to an embodiment of the present invention.
2 is a rear perspective view illustrating a display device according to an embodiment of the present invention.
3 is a rear perspective view showing a part of the display device shown in Fig.
Fig. 4 is a plan view showing a first end of the first or second modified portion of the display device of Fig. 3; Fig.
5 is a view for explaining a shape change of a display device according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, it is needless to say that the present invention is not limited to these embodiments and can be modified into various forms.

In the drawings, the same reference numerals are used for the same or similar parts throughout the specification. In the drawings, the thickness, the width, and the like are enlarged or reduced in order to make the description more clear, and the thickness, width, etc. of the present invention are not limited to those shown in the drawings.

Wherever certain parts of the specification are referred to as "comprising ", the description does not exclude other parts and may include other parts, unless specifically stated otherwise. Also, when a portion of a layer, film, region, plate, or the like is referred to as being "on" another portion, it also includes the case where another portion is located in the middle as well as the other portion. When a portion of a layer, film, region, plate, or the like is referred to as being "directly on" another portion, it means that no other portion is located in the middle.

FIG. 1 is a front perspective view of a display device according to an embodiment of the present invention, and FIG. 2 is a rear perspective view illustrating a display device according to an embodiment of the present invention. For the sake of clarity, the illustration of the rear cover is omitted in Fig.

1 and 2, a display device 100 according to the present embodiment includes a display module 10 in which an image is implemented and a deformable member 20 that changes the shape of the display module 10 . And a rear cover 30 covering the rear surface of the display module 10. This will be explained in more detail.

The display device 100 collectively refers to a device that displays data, images, and the like on a screen. The display device 100 may include various kinds of devices such as a television, a computer monitor, a mobile phone, and an e-book.

The display module 10 includes a display panel 12 that substantially implements an image, a support member 14 that is positioned on the rear surface of the display panel 12 and supports the display panel 12, And a panel driver (not shown) that is fixed to the display panel 12 and provides a signal for driving the display panel 12. Further, a frame portion (not shown) that surrounds the edges of the display panel 12 and the support member 14 may be further positioned.

In the present embodiment, the display panel 12 is a panel having various structures and systems capable of implementing an image, and having a flexible characteristic, the shape of which can be changed by the deformable member 20.

For example, the display panel 12 may be an organic light emitting display panel using an organic light emitting diode (OLED). The organic light emitting display panel is a self-luminous display panel that uses a principle that a current is generated in a fluorescent or phosphorescent organic thin film to combine electrons and holes in the organic thin film to generate light. The organic light emitting display panel has various advantages such as a bright and clear image quality, no limitation by the viewing angle, and low power consumption. In particular, since the organic thin film can be produced by laminating it, the flexible property is excellent. However, the present invention is not limited thereto, and various display panels 12 having various structures and systems can be applied.

The support member 14 is disposed on the rear surface of the display panel 12 to support the display panel 12. A panel driving part and a deformable member 20 which are fixed to the rear surface of the supporting member 14 by driving the display panel 12 may be positioned on the rear surface of the supporting member 14. [ The supporting member 14 has a strength that can be supported and fixed to the display panel 12, the panel driving unit and the deformable member 20, and the shape can be changed when the shape of the display panel 12 is changed Elasticity, and the like. In addition, the support member 14 may have a thermal expansion coefficient similar to that of the display panel 12 in order to prevent thermal stress or the like from occurring.

For example, in this embodiment, the support member 14 may comprise a composite material such as reinforced plastic. Composite material is a material that artificially combines two or more kinds of materials to have excellent properties. For example, in this embodiment, the support member 14 may include reinforced plastics such as carbon fiber reinforced plastic (CFRP), glass fiber reinforced plastic (GFRP), and the like. Then, it is possible to have high strength, elasticity, and excellent abrasion resistance by a reinforcing material of various fiber form while having light and flexible characteristics by plastic. The support member 14 may be composed of a single composite material layer or may be formed by stacking a plurality of composite material layers for superior strength.

The support member 14 may be fixed to the rear surface of the display panel 12 using an adhesive (for example, a double-sided tape). However, the present invention is not limited thereto, and the display panel 12 and the supporting member 14 can be fixed by various other methods.

The panel driver fixed to the rear surface of the support member 14 includes a circuit board (not shown) including various wires, elements, and the like to provide a signal for driving the panel. Such a panel driving unit may be fixed to the supporting member 14 by a bracket (not shown) or the like. For example, when the bracket is fixed to the supporting member 14 only at the central portion to change the shape of the display panel 12 The required force can be minimized. However, the present invention is not limited thereto, and it is needless to say that a part or all of the panel driving unit is located outside the display module 10 or the display device 100, and the like. The panel driving unit of the present embodiment may include wiring, devices, and the like for driving the deformable member 20. [

Further, a frame portion (not shown) for protecting the edges of the display panel 12 and the support member 14 may be further positioned. Such a frame portion protects the display panel and the support member 14 while allowing the back cover 30 to be fixed by a fixing member (not shown) or the like. The shape of the frame portion, the fixing structure of the frame portion and the rear cover 30, and the like can be applied in various structures and schemes, and therefore, detailed description thereof will be omitted.

At this time, in this embodiment, the groove 142 may be formed in the support member 14 so that the shape of the display module 10 by the deformable member 20 can be deformed with a small force. That is, in this embodiment, the support member 14 is formed with a groove 142 having a thickness smaller than that of the other portions, and the support member 14 is divided into a plurality of regions. Thus, the force required to change the shape of the support member 14 can be reduced when the shape of the display module 10 is changed by the deformable member 20. That is, when the support member 14 is formed of a single plate having a uniform thickness without the grooves 142, a large force is required because the shape of one plate must be changed as a whole. In addition, since a single plate is used as a reference, the required displacement is also increased and it is difficult to uniformly apply force to all portions. On the other hand, if the support member 14 includes a plurality of regions defined by the grooves 142 as in the present embodiment, the support member 14 can be deformed by applying a relatively small force so as to deform one region . Further, since the displacement of each region is small, it is possible to cope with the shape change more easily, and uniform shape change is possible.

5, when the display module 10 is deformed into a curved surface having a constant radius of curvature R in the left-right direction, the groove 142 may have a shape extending in the vertical direction intersecting the left- Lt; / RTI > When the display module 10 is deformed into a curved surface, a bending force acts on the support member 14 in the left-right direction. Accordingly, in this embodiment, the groove 142 is formed so as to extend vertically in the vertical direction, and a plurality of divided regions are arranged in the left-right direction. As a result, the width of one region to which the bending force is applied is relatively small, so that the support member 14 can be easily deformed. However, the grooves 142 may have various shapes. In addition, the cross section of the groove 142 may have various shapes, and the present invention is not limited thereto.

In this embodiment, the gap between the grooves 142 may be formed larger at the center portion and smaller at the left and right edges. More specifically, the interval between the grooves 142 may gradually become smaller toward the vicinity of the left and right edges in the central portion. This is taken into consideration that the amount of displacement near the left and right edges when the display module 10 is deformed is larger than the amount of displacement at the center. The shape of the support member 14 can be effectively changed even with a small force. However, the present invention is not limited thereto. Accordingly, the grooves 142 may be formed at regular intervals, so that a plurality of regions defined by the grooves 142 may have the same width. Here, the same width includes not only the case where they are completely physically identical but also the width which can be judged to be the same in consideration of process errors and the like. Thus, the distance between the grooves 142 formed in the support member 14 can be variously modified. It is also possible that the groove 142 is not formed in the support member 14. [

On the rear surface of the display module 10 (more specifically, the support member 14), a deformable member 20 capable of changing the display panel 12 is positioned. The deformable member 20 will be described later in more detail.

The rear cover 30 is positioned on the rear surface of the display module 10 and the deformable member 20. The rear cover 30 protects the display module 10, the panel driving unit, and the like by an external impact while providing a space for the structure of the panel driving unit and the like. In addition, the rear cover 30 covers the panel driving unit and the like to prevent the internal structure from being seen from the outside and to improve the appearance. For example, the rear cover 30 may be formed as a curved surface as a whole to secure a sufficient space and improve the appearance. In this embodiment, the rear cover 30 may have a material, structure, and the like that can correspond to the shape change of the display module 10.

Hereinafter, the variable member 20 of the present embodiment will be described in more detail with reference to Figs. 3 and 4 together with Fig. FIG. 3 is a rear exploded perspective view showing a part of the display device 100 shown in FIG. 2, and FIG. 4 is a plan view showing a first end of the first or second modified part of the display device shown in FIG. 3 and 4, the illustration of the rear cover 30 is omitted for clarity.

Referring to the drawings, the deformable member 20 includes a deformable portion 22 that changes the shape of the display module 10 due to a change in the central angle, and a driving portion 24 that changes the center angle of the deformable portion. The deformable member 20 may have a fixing plate 26 for fixing the deformable portion 22 and the driving portion 24 to the display module 10 (more specifically, the supporting member 14).

At this time, the deforming portion 22 deforms the first deformed portion 210 and the second deformed portion 220, which are located at a central angle of the central portion of the display module 10 (more specifically, the supporting member 14) . The driving unit 24 for providing a driving force for changing the center angle of the deforming unit 22 includes a power unit 230 for providing energy and a driving unit 230 for driving the deforming unit 22 using the energy provided from the power unit 230. [ And a moving unit 240 for changing the center angle. The moving unit 240 includes a moving body 242, a ball nut 244 which is located in the moving body 242 and rotates by the rotational energy supplied by the power unit 230, a ball nut 242, And a first and a second guide pins 248a and 248b positioned on both sides of the moving body 242. The rack bar 246 includes a first guide pin 248a and a second guide pin 248b. The fixing plate 26 is provided with various components constituting the deforming portion 22 and the driving portion 24 described above.

More specifically, the fixing plate 26 is provided with a first fixing part 250 for fixing the deformable part 22 and a second fixing part 260 for fixing the driving part 24.

The first fixing part 250 may include a rotation axis 252 for rotatably fixing the first or second deformable member 210, 220. At this time, the rotation axis 252 can be fixed to the fixing plate 26 by fixing the rotation axis fixing member 254 inserted with the rotation axis 252 to the fixing plate 26. The rotating shaft fixing member 254 can be fixed to the fixing plate 26 by various methods, for example, by screwing or the like. The first or second deformable member 210 or 220 is fixed to the rotary shaft 252 and the rotary shaft fixing member 254. The first and second deformable members 210 and 220 are formed of two portions A and B and can be easily fixed to the outer surface of the rotary shaft 252 and the rotary shaft fixing member 254 . However, the present invention is not limited thereto, and the first and second deformable members 210 and 220 may be rotatably fixed to the rotary shaft 252 by various structures.

The second fixing part 260 may include an upper fixing member 262 located on the upper side of the fixing plate 26 and a lower fixing member 264 located on the lower side of the fixing plate 26. And a moving body fixing member 266 movably installed in a moving groove 266a formed between the upper fixing member 262 and the lower fixing member 264. [ A lower portion of the lower fixing member 264 may be provided with a power fixing member 268 for fixing the power portion 230.

Holes 262a and 264a are formed in the upper fixing member 262 and the lower fixing member 264 and the upper and lower portions of the rack bar 246 are fixed to the holes 262a and 264a. At this time, the moving body 242 equipped with the ball nut 244 is fixed to the moving body fixing member 266 while being rotatably fixed to the rack bar 246. Thus, the movable body 242 can be stably moved on the rack bar 246. The rotating shaft of the power unit 230 is inserted through the holes 248a and 246b formed in the power unit fixing member 268 and the lower fixing member 264 to provide rotational energy to the moving unit 240. [

At this time, the upper fixing member 262, the lower fixing member 264, and the power fixing member 268 may be fixed to the fixing plate 26 by various methods. For example, it can be fixed to the fixing plate 26 by screwing or the like. However, the present invention is not limited thereto. The moving body fixing member 266 and the moving body 242 can also be fixed to each other by various methods. For example, it can be fixed to the fixing plate 26 by screwing or the like.

The fixing plate 26 is fixed to the supporting member 14 so that the deformation portion 22 and the driving portion 24 are fixed by fixing the fixing plate 26 to the supporting member 14. [ 24 can be easily fixed to the support member 14. [ In other words, if the components constituting the deforming portion 22 and the driving portion 24 are separately fixed to the supporting member 14, a lot of parts, a long time and the like are required, and the productivity may be lowered. In consideration of this, in the present embodiment, the fixing plate 26 provided with the deforming portion 22 and the driving portion 24 is provided. By fixing the fixing plate 26 to the supporting member 14, the process is simplified, Can be improved.

A screw for fixing the rotating shaft fixing member 254, the upper fixing member 262, the lower fixing member 264 and the power fixing member 268 is formed on the support member 14 by a Pam nut , The fixing plate 26 can be fixed to the supporting member 14. [0051] By fixing the fixing plate 26 together with the supporting member 14 when fixing the deforming portion 22 and the driving portion 24 as described above, the fixing plate 26 is fixed firmly to the supporting member 14 by a simple structure can do. However, the present invention is not limited thereto, and the fixing plate 26 may be fixed to the supporting member 14 by various structures, methods, or the like.

The fixing plate 26 may have a rough rectangular shape. However, the present invention is not limited thereto, and it goes without saying that the fixing plate 26 may have various shapes.

As described above, the deformable portion 22 includes a first deformed portion 210 and a second deformed portion 210 positioned to have a predetermined center angle at a central portion of the display module 10 (more specifically, the supporting member 14) 220). In the drawing, the first deformed portion 210 and the second portion 220 are illustrated as being separated from each other. In this case, the center angle of the deformed portion 22 refers to an angle of an inclined angle formed by connecting a virtual extension line of the first deformed portion 210 and a virtual extension line of the second portion 220 A1, A2). However, the present invention is not limited thereto. Accordingly, the deformed portion 22 may have a single structure such that the first deformed portion 210 and a part of the second portion 220 are connected to each other. And various other variations are possible.

The first deformed portion 210 may be formed to extend from the central portion of the display module 10 to one side edge thereof. The first end portion 210a of the first deformed portion 210 adjacent to the central portion of the display module 10 is rotatably fixed to the rotation axis 252 and the second end portion 210a adjacent to one side edge of the display module 10 (210b) is free and is not fixed.

A first guide portion 214 is formed on the inner surface of the first end portion 210a of the first deformed portion 210 so that the first guide pin 248a of the driving portion 24 moves. The first guide portion 214 may have a groove or a concave shape formed concavely at the first end 210a of the first deformed portion 210, for example. As described above, the first guide portion 214 may have a simple structure and may not have the inconvenience of attaching a separate structure to the first guide portion 214. However, the present invention is not limited to this, and various modifications such as providing a separate structure (for example, a rail) or the like may be provided in the first end portion 210a.

The first guide part 214 may have a shape that induces the first deformed part 210 to rotate about the rotation center axis 212 by the movement of the first guide pin 248a. 4, in this embodiment, the first guide portion 214 is provided at an edge (hereinafter referred to as "module side edge") 210c adjacent to the display module 10 side at the first end portion 210a, As shown in FIG. That is, the first guide portion 214 includes a first portion 214a having a first distance D1 and a module side edge 210c, a second portion 214b having a first side 214c, And a second portion 214b having a distance D2. At this time, the first portion 214a may be formed with a certain length L1 and the second portion 214b may be formed with a certain length L2. Thus, the first guide pin 248a can be stably positioned in the first portion 214a or the second portion 214b.

Although the first portion 214a is positioned on the lower side of the display module 10 and the second portion 214b is positioned on the upper side of the display module 10 in the present embodiment, Of course, various variations are possible.

And a third portion 214c between the first portion 214a and the second portion 214b where the module side edge 210b gradually decreases from the first distance D1 to the second distance D2 have. So that movement from the first portion 214a to the second portion 214b, or from the second portion 214b to the first portion 214a, can occur smoothly. However, the present invention is not limited thereto, and it is also possible to connect the first portion 214a and the second portion 214b with a step difference. Various other variations are possible.

The second deformable portion 220 may be formed symmetrically with the first deformable portion 210 and may have a shape similar to the first deformable portion 210. That is, the second deformed portion 220 may be formed to extend from the central portion of the display module 10 to the other side edge thereof. The first end portion 220a of the second deformed portion 220 adjacent to the center of the display module 10 is rotatably fixed to the rotation fixing shaft 252 and the first end portion 220a of the second deformed portion 220 adjacent to the other side edge of the display module 10 The two ends 220b are free and not fixed. The fixing structure of the second deforming part 220 with respect to the rotation fixing shaft 252 is the same as or extremely similar to that of the first deforming part 210, and a description thereof will be omitted.

A second guide portion 224 for moving the second guide pin 248b of the driving portion 24 is formed on the inner surface of the first end portion 220a of the second deformed portion 220. [ The second guide portion 224 may have a groove or a concave shape formed concavely at the first end 220a of the second deformed portion 220, for example. As described above, the second guide portion 224 may have a simple structure and may have a disadvantage in that a separate structure is attached to the first guide portion 224. However, the present invention is not limited thereto, and various modifications such as providing a separate structure (for example, a rail) or the like may be provided in the first end portion 220a.

The second guide portion 224 may have a shape that induces the first deformed portion 220 to rotate about the rotation center axis 252 by the movement of the second guide pin 248b. For example, in the present embodiment, the second guide portion 224 includes a portion having a distance from the first end portion 220a to the edge (hereinafter referred to as "module side edge") 220b adjacent to the display module 10 side do. That is, the second guide portion 224 includes a first portion 224a having a first distance D1 from the module side edge 220c, and a second portion 224b having a first distance D2 smaller than the first distance D1. And a second portion 224b having a distance D2. At this time, the second portion 224a may be formed with a certain length L1 and the second portion 224b may be formed with a certain length L2. Thereby allowing the second guide pin 248b to be stably positioned in the first portion 224a or the second portion 224b.

In this embodiment, the first portion 224a is located on the lower side and the second portion 224b is located on the lower side. However, the present invention is not limited to this and various modifications are possible.

And a third portion 224c between the first portion 224a and the second portion 224b where the module side edge 220b gradually decreases from the first distance D1 to the second distance D2 have. So that movement from the first portion 224a to the second portion 224b or from the second portion 224b to the first portion 224a can occur smoothly. However, the present invention is not limited thereto, and it is also possible to connect the first portion 224a and the second portion 224b with a step difference. Various other variations are possible.

The first to third portions 224a, 224b and 224c of the second deformed portion 220 described above are positioned symmetrically with respect to the first to third portions 214a, 214b and 214c of the first deformed portion 210, can do.

When the center angle between the first deformed portion 210 and the second deformed portion 220 becomes small, the central portion of the first and second deformed portions 220 is fixed to the support member 14, 210 are rotated so that the edge portion gradually protrudes forward and the second deformed portion 220 rotates so that the edge portion gradually protrudes forward. Whereby the display module 10 is deformed to have a radius of curvature R. [

The first deformed portion 210 and the second deformed portion 220 may be formed such that the first ends 210a and 220a fixed to the supporting member 14 are bent at a distance from the second end portions 210b and 220b It can have a more protruded state. That is, the first deformed portion 210 and the second deformed portion 220 may have a curved shape so as to protrude more from the edge side. The display module 10 can be more easily deformed when the display module 10 is deformed to have a generally constant radius of curvature R by the shape change of the first deformed portion 210 and the second deformed portion 220. [ have.

As such, the deformation portion 22 applies a force to the display module 10 by changing the center angle (more precisely, by decreasing the center angle) to change the shape of the display module 10 correspondingly. As described above, the deforming portion 22 is a portion that changes the shape of the display module 10. Accordingly, the deformation portion 22 may include a material having excellent strength. The deformable portion 22 may be made of a light material so that the display device 100 can be lightened.

For example, the first and second deformed portions 210 and 220 of the deformable portion 22 may comprise a single or multiple layers comprising a composite material, for example, reinforced plastic (CFRP, GFRP, etc.). However, the present invention is not limited thereto, and it is needless to say that the first and second deformed portions 210 and 220 may be formed of various materials. The first and second deformed portions 210 and 220 may have a band shape having a predetermined width W and extending continuously. As a result, the force to the display module 10 can be more effectively provided. However, the present invention is not limited thereto, and it goes without saying that the first and second deformed portions 210 and 220 may have various shapes.

In this embodiment, the shape of the display module 10 can be changed by the deformation of the first and second deformed parts 210 and 220 without any other configuration. Thus, a simple structure can be applied to reduce the cost.

The driving unit 24 for providing a driving force for changing the center angle of the deforming unit 22 includes a power unit 230 for providing energy and a driving unit 230 for driving the center of the deforming unit 22 using energy provided from the power unit 230. [ And a moving unit 240 for changing the angle. At this time, the power unit 230 can provide rotational energy, and the moving unit 240 linearly moves using rotational energy to change the center angle of the deformation unit 22. [ However, it should be understood that the present invention is not limited thereto, and that the center angle of the deformable portion 22 can be varied by various structures.

In one example, the power section 230 may include a motor 232 that provides rotational energy. The motor 232 may have various structures and systems. For example, an ultrasonic motor may be used as the motor 232. The ultrasonic motor is a motor that changes the frictional force generated between the oscillator and the mover, which is caused to vibrate by ultrasonic waves, and is called a piezoelectric motor because it utilizes the piezoelectric effect of the piezoelectric ceramics.

Ultrasonic motors have a reaction speed 10 times faster than conventional electromagnetic motors and can generate large power. The ultrasonic wave outside the human auditory area is used as a driving frequency, so that there is no operation noise and the structure of the motor itself is simple and can be manufactured in a small size. Further, since it does not include magnets, it does not unnecessarily affect the display module 10 when the display device 100 is driven. Further, since the holding torque that can be stopped by itself is large and the reverse rotation does not occur even if the voltage is not applied, the state can be maintained even after the display module 10 is not provided with additional power after the display module 10 is deformed . Accordingly, stability of the display module 10 at the time of deformation can be improved, and a separate structure for maintaining the deformation state is not necessary, so that the structure can be simplified. However, the present invention is not limited thereto, and it goes without saying that motors having various structures can be applied.

The power unit 230 may further include a speed reducer 234 for reducing the speed of the motor 232 to provide a greater rotational energy. When the speed reducer 234 is used, the size of the motor 232 can be greatly reduced. At this time, the speed reduction ratio of the speed reducer 234 may be 1: 2 to 1: 300. This range is limited to the extent that it can provide the mechanical energy sufficient to deform the deformable portion 22 while minimizing the size of the motor 232. [ However, it goes without saying that the reduction ratio of the speed reducer 234 can be changed by the type of the motor 232, the structure of the deformation portion 22,

As described above, the moving unit 240 includes a moving body 242, a ball nut 244 mounted on the moving body 242 and rotated by the rotational energy supplied by the power unit 232, A rack bar 246 to which the ball nut 242 linearly moves and first and second guide pins 248a and 248b that move along the first and second guide portions 214 and 224 on both sides of the moving body 242, 248b.

The movable body 242 is fixed movably up and down along a moving groove 266a formed in the fixed plate 26. [ An upper portion of the rack bar 246 is fixed to the hole 264a of the rack bar fixing portion 264 and a screw groove 246a of a helical shape is formed on the outer circumferential surface of the rack bar 246. [ The ball nut 244 is engaged with the screw groove 246a of the rack bar 246 via a ball (not shown) and moves along the screw groove 246a. Then, the rotating ball nut 244 moves upward or downward along the screw groove 246a, so that the moving body 242 linearly moves up and down. At this time, if the ball nut 244 is used, the movable body 244 can be moved up and down while minimizing friction or the like.

A first guide pin 248a for moving along the first guide part 214 is located at one side of the moving body 242 and a second guide pin 248a for moving along the second guide part 224 is provided at the other side of the moving body 242. [ The guide pin 248b is positioned. The first and second guide pins 248a and 248b may have various shapes that protrude from the moving body 244 and can be positioned in the first and second guide portions 214 and 224.

The shape change of the display device 100 will be described in more detail with reference to FIG. 5 is a view for explaining a shape change of a display device according to an embodiment of the present invention. 5, the illustration of the rear cover 30 is omitted for clarity.

5A, when the first and second guide pins 248a and 248b are positioned in the first portions 214a and 224a, the center angle of the deformation portion 22 (that is, The angle between the portion 210 and the second deformed portion 220 has a first angle A1. At this time, as described above, the first and second deformed portions 210 and 220 each have a center portion (that is, a first end portion 210a and a second end portion 220b) The first and second deformed portions 210 and 220 are not parallel to each other and the first angle A1 is 180 degrees, It is possible to have a smaller angle.

At this time, the moving body 242 is spaced apart from the display module 10 by a third distance D3, and the first portions 214a and 224a and the module side edges 210c and 210d of FIG. 1 < / RTI > distance D1. The first ends 210a and 220a of the first or second deformed portions 210 and 220 are spaced apart from the display module 10 by a fourth distance D3, which is a value obtained by subtracting the first distance D1 from the third distance D3 D4, respectively.

When the user gives a command to change the shape of the display module 10, the power unit 230 provides rotational energy in the first direction so that the ball nut 244 can move the screw groove 246a of the rack bar 246 And then moves upward. The first and second guide pins 248a and 248b are moved to the second portions 214b and 224b through the third portions 214c and 224c. The distance between the moving body 242 and the display module 10 is maintained at the third distance D3 and the distance between the first portions 214a and 224a and the module side edges 210c and 210d The distance becomes the second distance D2. The first ends 210a and 220a of the first or second deformed portions 210 and 220 are spaced a second distance D2 from the display module 10 at a third distance D3 (That is, larger than the fourth distance D4), which is a value obtained by subtracting the distance D5 from the fifth distance D5. That is, the first or second deformed portions 210 and 220 are rotated so that the distance between the first end portions 210a and 220a and the display module 10 is larger than before the deformation. 5 (b), the center angle of the deformed portion 22 is changed to have a second angle A2 smaller than the first angle A1, and the first and second deformed portions 210, and 220 protrude further toward the front. As a result, the display module 10 is transformed into a curved surface having a uniform curvature radius R as a whole in the left-right direction, so that the user's immersion feeling can be further improved.

When the user gives a command to change the shape again to the original state, the power unit 230 provides rotational energy in a second direction opposite to the first direction so that the ball nut 244 is rotated by the screw of the rack bar 246 And moves down along the groove 246a. The first and second guide pins 248a and 248b are moved to the first portions 214a and 224a through the third portions 214c and 224c. Then, the first or second deformed portions 210 and 220 are rotated so that the distance between the first ends 210a and 220a and the display module 10 is reduced. Thereby, as shown in Fig. 5A, the center angle of the deformation portion 22 is changed again to have the first angle A1. As a result, the deformable member 20 returns to the initial state.

As described above, in this embodiment, the shape of the display module 10 can be changed so as to improve the satisfaction of viewers. At this time, the deformable part 22 can be easily deformed by using the driving part 24 that provides mechanical energy for changing the shape of the display module 10, and the degree of deformation and deformation time of the deformable part 22 can be precisely . The power unit 230 constituting the driving unit 24 can be implemented in a small size using a motor 232 (more accurately, an ultrasonic motor) and a speed reducer 234, The shape can be changed. The moving part 260 transmits the energy of the power part 230 to the deformable part 22 so that the deformable part 22 can be deformed to a desired shape.

Further, since the deformation portion 22 is deformed by the change of the center angle, it can be easily deformed by the driving portion 24 while having a simple structure.

Features, structures, effects and the like according to the above-described embodiments are included in at least one embodiment of the present invention, and the present invention is not limited to only one embodiment. Further, the features, structures, effects, and the like illustrated in the embodiments may be combined or modified in other embodiments by those skilled in the art to which the embodiments belong. Therefore, it should be understood that the present invention is not limited to these combinations and modifications.

100: display device
10: Display module
12: Display panel
14: Support member
20: variable member
22:
24:
26: Fixing plate

Claims (20)

A display module in which an image is implemented; And
And a deformable member for changing the shape of the display module
Lt; / RTI >
Wherein the deformable member includes a deforming portion adjacent to the display module and providing a force for changing the shape of the display module, and a driving portion changing a center angle of the deforming portion. The method according to claim 1,
Wherein the deforming portion is rotatably fixed to a rotation fixing shaft fixed to the display module,
Wherein the deformed portion rotates about the rotation fixed shaft by the driving unit to change the center angle of the deformed portion. The method according to claim 1,
Wherein the deformed portion includes a first deformed portion located at one side with respect to the center portion and a second deformed portion located at the other side,
Wherein the first deformed portion and the second deformed portion rotate each other to change the center angle which is an angle between the first deformed portion and the second deformed portion. The method according to claim 1,
Wherein the deformed portion includes a first deformed portion located on one side with respect to a center portion and a first deformed portion located on the other side,
A first guide portion is formed at a first end of the first deformed portion adjacent to the center portion,
A second guide portion is formed at a first end of the second deformed portion adjacent to the center portion,
Wherein the driving unit includes a first guide pin and a second guide pin that move along the first guide unit and the second guide unit, respectively. 5. The method of claim 4,
And the first and second guide portions comprise grooves formed at the first end portion. 5. The method of claim 4,
Wherein the first and second guide portions include portions having different distances from an edge adjacent to the display module,
Wherein when the first and second guide pins move along the first and second guide portions, the first and second deformed portions are positioned such that the distance between the first and second guide pins and the display module is uniform, A rotating display device. 5. The method of claim 4,
Wherein the first and second guide portions comprise a first portion having a first distance from the edge adjacent the display module and a first portion having a second distance that is less than the first distance from the edge. 8. The method of claim 7,
Wherein the first and second guide rails comprise a third portion connecting the first portion and the second portion between the first portion and the second portion and being sloped with the first and second portions Display device. The method according to claim 1,
Wherein the driving unit includes a power unit for providing rotational energy and a moving unit for changing the center angle of the deformation unit by converting the rotational energy into rectilinear motion. 10. The method of claim 9,
Wherein the power section includes a motor. 11. The method of claim 10,
And the power unit includes an ultrasonic motor. 11. The method of claim 10,
And the power unit further includes a speed reducer connected to the motor. 10. The method of claim 9,
The moving unit includes a moving body, a ball nut positioned on the moving body and rotated by the rotational energy supplied by the power unit, a rack bar on which the ball nut moves, Wherein the first guide pin and the second guide pin are movable. 14. The method of claim 13,
Wherein the deformed portion includes a first deformed portion located at one side with respect to the center portion and a second deformed portion located at the other side,
A first guide portion is formed at a first end of the first deformed portion adjacent to the center portion,
A second guide portion is formed at a first end of the second deformed portion adjacent to the center portion,
And the first and second guide pins move along the first and second guide portions, respectively. The method according to claim 1,
Wherein the deforming portion includes a first deforming portion extending from a central portion of the display module to one side of the display module and a second deforming portion extending from a central portion of the display module to the other side of the display module,
And at least a part of the driving portion is located between the first deformed portion and the second deformed portion. The method according to claim 1,
The display module includes a display panel and a support member for supporting the display panel,
And a fixing plate fixed to the supporting member and fixed to the driving unit and the deforming unit. 17. The method of claim 16,
Wherein a plurality of grooves are formed in the support member along a vertical direction. 17. The method of claim 16,
Wherein the spacing between the plurality of grooves is smaller at the opposite edges of the display module than between the center portions of the display module. 17. The method of claim 16,
Wherein the driving section includes a power section for providing rotational energy and a moving section for changing the center angle of the deformed section by converting the rotational energy into linear movement,
The moving unit includes a moving body, a ball nut positioned in the moving body and rotated by the rotational energy supplied by the power unit, a rack bar in which the ball nut is linearly moved, And first and second guide pins moving along the guide pin,
Wherein a movable groove for fixing the movable body fixing member, to which the movable body is fixed, is movably fixed to the fixed plate. 17. The method of claim 16,
Wherein the driving section includes a power section for providing rotational energy and a moving section for changing the center angle of the deformed section by converting the rotational energy into linear movement,
The moving unit includes a moving body, a ball nut positioned in the moving body and rotated by the rotational energy supplied by the power unit, a rack bar in which the ball nut is linearly moved, And first and second guide pins moving along the guide pin,
Wherein the fixing plate includes an upper fixing member for fixing the upper portion of the rack bar and a lower fixing member for fixing the lower portion of the rack bar.

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