KR20160009775A - Variable display device - Google Patents

Abstract

The present invention relates to a variable display device with a variable a mode converted into a flat mode or a curved mode, particularly relates to a variable display device with enhanced flatness. The present invention is to provide the variable display device of which the mode can be selectively converted into the flat mode and the curved mode by mounting a back cover system including an angle block module on the rear side of a display panel module. The variable display device may operate with the flat mode for realizing wide viewing range in the event of delivering contents such as news, advertisement, etc. shown by displayed image to many viewers when the variable display device is established in an open space such as an exterior square or an interior square such as an airport, a terminal, etc., and operate with the curved mode so that a user can feel comfortable by enhancing more immersion of the user and realizing more real image, considering convenience of the user. Particularly, the back cover system includes further a flatness control unit and a force pulling at both end terminals in the longitudinal direction of the display panel module is applied to the display panel module through a wire of the flatness control unit, thereby enhancing the flatness of the variable display device though plastic deformation occurs at central part of the variable display device.

Description

[0001] Variable display device [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a variable display device that can be used in a flat mode and a curved mode, and more particularly, to a variable display device having improved flatness.

2. Description of the Related Art [0002] In recent years, as the society has become a full-fledged information age, a display field for processing and displaying a large amount of information has rapidly developed, and a variety of flat display devices have been developed Be in the spotlight.

Specific examples of such a flat panel display device include a liquid crystal display device (LCD), a plasma display panel (PDP), a field emission display (FED) (ELD), organic light emitting diodes (OLED), and the like. These flat panel display devices are thinned,

Light weight and low power consumption, which are replacing CRT (Cathode Ray Tube).

Such a flat panel display device has advantages of high image quality, ultra-thinness, light weight and large size, has advantages of space utilization, interior and design, and can have various application fields.

In recent years, a curved display device in which a flat panel display device has a curved surface is rapidly emerging as a next-generation display device. The curved display device allows the user to further improve the degree of immersion and make the image more realistic, To feel comfortable.

In the curved display device, the distances from the viewer's eyes to the center of the screen and the sides are the same, so that the distortion of the screen and the decrease of the perceived outer frame portion where the end of the viewing angle is blurred are minimized.

In recent years, there has been a demand for research on a variable display device capable of satisfying the advantages of a flat panel display device as well as the advantages of a curved display device for improving immersion and comfort.

When a wide viewing radius is required, the variable display device operates in a planar mode and operates in a curved surface mode in order to improve the user's feeling of immersion. Thus, convenience of the user can be considered.

It is a first object of the present invention to provide a variable display device capable of realizing both a flat display device and a curved display device.

A second object of the present invention is to provide a curved display device having an accurate curvature in the process of implementing the curved display device. The present invention provides a flat display device and a curved display device that minimizes noise and vibration, A third object of the present invention is to provide a variable display device.

A fourth object of the present invention is to improve the flatness in the planar mode.

In order to achieve the above object, the present invention provides a variable display device which is variable in a flat mode or a curved mode forming a curved surface, and; A driving system mounted on the back surface of the display panel module and including a motor and a plurality of angle blocks arranged opposite to each other with respect to the driving system as a center, An angle block module for adjusting the angle; And a flatness adjusting unit provided on the angle block module and having one end connected to the motor and the other end connected to an end of the angle block module, To thereby improve the flatness of the central portion of the display panel module.

At this time, the wire is guided in the flatness adjusting groove provided along the longitudinal direction of one or both sides of the plurality of angle blocks, and the flatness adjusting part is formed by a wire having a double structure of a spring and a wire And a tension adjusting unit.

In addition, the tension adjusting unit may be configured such that one end of the spring is connected to a portion of the wire, the other end of the spring is connected to the wire ridge portion, and the length of the spring is the same from a portion of the wire to another portion And the wire has a length corresponding to the longitudinal direction of the back surface of the display panel module in the curved mode.

Here, in the curved mode, the pulling force of the wires at both ends in the longitudinal direction of the display panel module is smaller than the force applied to the display panel module by the angle block module. In the curved mode, And the wire is pulled tightly along the back surface of the display panel module.

In addition, the spring extending in the curved mode is restored to its original state in the planar mode, the wire is deflected, and the length of the wire after subtracting the deflected wire is implemented in the planar mode Of the rear surface of the display panel module.

At this time, the motor is further rotated in the planar mode so that the wire is pulled tightly along the back surface of the display panel module, and the wire is provided with a turnbuckle.

Here, the angle block module is composed of a plurality of block units, each of which is connected to the driving system and includes a pair of links and the angle block located between the pair of links, A shaft bearing having rollers mounted thereon is connected to the plurality of links, and the angle block is formed by protruding a protruding end at the first edge, and the protruding end is formed at the second edge, A step is formed in which the step is inserted.

The protruding end is formed to be inclined toward the display panel module toward the end, and a stepwise side surface is formed on both sides of the step, the groove being formed along the longitudinal direction, And both ends are guided in the groove.

In addition, grooves for guiding the rollers may be formed at the step, and hooks of the shaft bearings may be provided at the ends of the step, each one end of the pair of links may be extended to form a bearing groove, One end of the link of the unit which is in close contact with the bearing groove is formed to be engaged with each other.

In this case, the drive system includes a gear that transmits the rotational force of the motor and the motor to the pair of links, and the gear has a guide groove connected to the links.

As described above, according to the present invention, a back cover system including an angle block module is mounted on the back surface of a display panel module, thereby providing a variable display device capable of selectively changing to a planar mode and a curved mode Thus, when it is installed in an open space such as an outdoor square or an indoor square such as an airport or a terminal, it is possible to realize a wide viewing radius when it is intended to transmit contents such as news, advertisement, In addition, it is possible to implement a user in a curved surface mode in order to make the user feel more comfortable and feel the image more realistically. There is an effect that can be considered.

Further, by further including the flatness adjusting portion in the back cover system, the flatness can be improved even if the plastic deformation occurs in the central portion of the variable display device.

1A and 1B are perspective views schematically showing a variable display device according to an embodiment of the present invention.
2 is a perspective view schematically showing a back surface of a variable display device according to an embodiment of the present invention.
3 is a perspective view schematically illustrating a back cover system mounted on the back side of a display panel module;
4 is an exploded perspective view schematically showing an angle block module;
FIGS. 5A to 5G are views schematically showing a driving state in which a variable display device according to an embodiment of the present invention is changed from a planar mode to a curved mode. FIG.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.

FIGS. 1A and 1B are perspective views schematically showing a variable display device according to an embodiment of the present invention, and FIG. 2 is a perspective view schematically illustrating a back surface of a variable display device according to an embodiment of the present invention.

As shown, the variable display device 100 according to an embodiment of the present invention includes a display panel module 110 for realizing images, an external case 120 for accommodating the display panel module 110, And a pedestal 130 connected to a lower end portion or a back portion of the case 120 and fixed to a desk or a wall.

Here, the display panel module 110 may include a liquid crystal display device (LCD), a plasma display panel (PDP), a field emission display (FED) (ELD), and organic light emitting diodes (OLED). The organic EL display device includes a display panel, which is representative of a flexible display device capable of maintaining display performance even when bent like paper, Is preferably used.

The OLED is a self-luminous element and can be lightweight and thin because a backlight used in a liquid crystal display device which is a non-luminous element is not required.

In addition, it has a better viewing angle and contrast ratio than liquid crystal display devices, is advantageous in terms of power consumption, can be driven by DC low voltage, has a fast response speed, is resistant to external impacts due to its solid internal components, It has advantages.

Particularly, since the manufacturing process is simple, it is advantageous in that the production cost can be saved more than the conventional liquid crystal display device.

The OLED display panel includes a first substrate and a second substrate facing the first substrate. The first and second substrates are bonded to each other through a protective layer having adhesiveness.

Though not shown, a more detailed description will be made as follows. In the upper part of the first substrate, a driving thin film transistor is formed for each pixel area, and a first electrode connected to each driving thin film transistor and a first electrode And a second electrode is formed on the organic light emitting layer.

The organic light emitting layer displays red, green, and blue colors. As a general method, a separate organic material emitting red, green, and blue light is patterned for each pixel.

The first and second electrodes and the organic light emitting layer formed therebetween form a light emitting diode. In this case, the display panel having such a structure has the first electrode as an anode and the second electrode as a cathode.

Such a display panel is modularized through a back cover and a cover window to form a display panel module 110. The back cover has a shape covering a back surface and a part of a side surface of the display panel, .

A cover window for protecting the display panel is assembled to the opened front face of the back cover.

The variable display device 100 according to the embodiment of the present invention including the display panel module 110 includes a display panel module 110 in which an image is implemented as shown in FIG. 1A, a flat panel mode (flat mode), so that it has a wide viewing radius and transmits contents such as news, advertisements, and the like, which are realized by the display panel module 110 to many viewers.

1B, the display panel module 110 in which the image is implemented operates in a curved mode having a curved surface portion, Thus, the viewer can further improve the immersion level and the image can be made more realistic, so that the user can feel comfortable.

In other words, the variable display device 100 of the present invention can be selectively changed into a planar mode and a curved surface mode, and the user can select and use the display device of the planar mode and the curved mode, have.

2, the back cover system 200 is mounted on the back surface of the display panel module 110, that is, on the back surface of the back cover. The variable display device 100 of the present invention includes a back cover system 200, And operates in the planar mode and the curved surface mode by the back cover system 200 mounted on the back surface of the cover.

We will discuss this in more detail below.

FIG. 3 is a perspective view schematically showing a back cover system mounted on a back surface of a display panel module, and FIG. 4 is an exploded perspective view schematically showing an angle block module.

As shown, the back cover system 200 is mounted to the back of the back cover of the display panel module 110 (FIG. 2), which is largely divided into an angle block module 210, A driving system 220 for transmitting power to the block module 210, and a flatness adjusting unit 300.

The angle block module 210 includes an angle block 213 and a block unit 211 including a pair of links 215 for converting rotational motion transmitted from the drive system 220 into linear motion. A shaft bearing 217 (see FIG. 4) for raising and lowering the edges of a plurality of angle blocks 213 which are in contact with each other while connecting the links 215 are provided between the respective block units 211 ).

The drive system 220 includes a motor 221 for generating a rotational force and a gear 223 for transmitting the rotational motion of the motor 221 to the link 215.

The angle block module 210 is disposed opposite to both sides of the driving system 220 along the longitudinal direction of the display panel module 110 (FIG. 2). 4, the angle block module 210 includes a plurality of block units 211a and 211b arranged in parallel to each other, and each block unit 211a, 211b includes a pair of links 215a, 215b located on both sides of the angle blocks 213a, 213b and the angle blocks 213a, 213b.

That is, the first block unit 211a, in which the first angle block 213a is located, is positioned between the pair of first links 215a, and a pair of first links 215a A second block unit 211b including a second angle block 213b positioned between the second link 215b and the second link 215b.

A shaft bearing (not shown) is provided between the first and second block units 211a and 211b, that is, between the first and second angle blocks 213a and 213b perpendicularly to the longitudinal direction of the first and second links 215a and 215b. And one end and the other end of the first and second links 215a and 215b are connected through a shaft bearing 217. [ That is, one end of the pair of first links 215a and the other end of the pair of second links 215b are formed with bearing grooves 219 corresponding to each other.

The shaft bearings 217 are inserted into the bearing grooves 219 so that one end of the pair of first links 215a and the other end of the pair of second links 215b are connected through the shaft bearing 217 do.

At this time, one end and the other end of the links 215a and 215b in which the bearing groove 219 is formed are formed so as to have a thickness thinner than the thickness of the links 215a and 215b from the inside and the outside of the links 215a and 215b, One end and the other end of each of the links 215a and 215b which are in close contact with each other have a structure in which they are engaged with each other.

That is, the extended portion formed with the bearing groove 219 of the first link 215a is formed to extend from the outside of the first link 215a, and the bearing groove of the second link 215b, which is in close contact with the first link 215a, The extension formed with the second link 219 is formed to extend from the inside of the second link 215b.

Accordingly, one end of the first link 215a and the other end of the second link 215b are engaged with each other, through which the first and second links 215a and 215b are mounted so as to be in line with each other, It is possible to prevent the volume of the angle block module 210 from increasing due to the connection portion.

The plurality of angle blocks 213a and 213b have two edges of a long side having a length corresponding to the longitudinal direction of the links 215a and 215b and two short sides having a short length perpendicular to the two edges of the long side, And a protruding end 212 protrudes from one edge of the short side.

The protruding end 212 is thinner than the thickness of the angle blocks 213a and 213b and is formed to have a width smaller than the width of the angle blocks 213a and 213b. And is inclined toward the back cover of the display panel module (110 of FIG. 2) toward the end.

Here, one edge of the angle blocks 213a and 213b is defined as a first edge, and the other edge opposite to the first edge is defined as a second edge. In the second edge of the short side, A step 214 is formed in which the protruding ends 212 of the angle blocks 213a and 213b are fitted.

The step 214 is formed in a stepped shape corresponding to the width and thickness of the protruding end 212 and is provided with a stepwise side 214a on both sides of the step 214. [

At this time, a plurality of grooves may be formed in the angle blocks 213a and 213b, thereby reducing the weight of the angle block module 210, thereby realizing the light weight of the variable display device 100 (FIG. 2).

The shaft bearings 217 located between the neighboring block units 211a and 211b connect one end and the other end of the pair of first and second links 215a and 215b.

At this time, the shaft bearing 217 is positioned on the step 214 and both ends of the shaft bearing 217 are provided on the step side surface 214a of the angle blocks 215a and 215b and have grooves 214b formed along the length direction of the step side surface 214a. And is guided.

That is, the shaft bearing 217 is inserted into the groove 219 of the pair of first and second links 215a and 215b while both ends of the shaft bearing 217 are inserted into the groove 214b formed at the stepwise side 214a. Is inserted.

The shaft bearing 217 has a role of guiding the protruding end 212 of the adjacent angle blocks 213a and 213b to be inserted into the step 214 The protruding end 212 receives the driving force by the linear motion transmitted to the pair of first and second links 215a and 215b and receives the driving force of the adjacent angle blocks 213a and 213b inserted into the step 214 And lifts each of the first and second edges in a vertical direction.

At this time, a groove 214c for guiding the roller 217a may further be formed in the step 214, and a stopping projection 214d is provided at the end of the step 214 so that the shaft bearing 217 and the roller 217a Can be prevented from dropping out of the step 214.

The angle block module 210 is configured such that the opposite side edges of the plurality of angle blocks 213a and 213b are raised and lowered around the driving system 220 so that the back cover system 200 has a generally curved shape Or have a flat shape.

Accordingly, the variable display device 100 (shown in FIG. 2) according to the embodiment of the present invention includes a back cover system 200 mounted on the back cover of the display panel module 110 (FIG. 2) Can be selectively used.

2, the angle block module 210 includes a flatness adjusting unit 300 and a flatness adjusting unit 300. The flatness adjusting unit 300 includes a variable display device 100 (100 in Fig. 2) in the process of operating in the planar mode.

The flatness adjusting unit 300 includes a wire 310. The wire 310 is connected to one side or both sides of the plurality of angle blocks 213 of the angle block module 210, (See FIG. 5F) formed along the direction of the flatness adjusting groove 320 (see FIG. 5F).

The wire 310 is connected to the end of an angle block module 210 having one end connected to the motor 221 and the other end disposed opposite to the both sides of the driving system 220. The flatness adjusting unit 300 A portion of the wire 310 includes a tension adjusting portion A composed of a spring 330 and a wire 310.

5F) formed in the longitudinal direction of the angle block module 210. The flatness adjusting part 300 is formed by cutting a portion of the wire 310 at one end of the spring 330 And the other end of the spring 330 is connected to the other end of the wire 310. The length of the spring 330 is shorter than the length from the portion of the wire 310 to the other portion of the wire 310 .

The wire 310 provided in the angle block module 210 disposed opposite to both sides of the driving system 220 corresponds to the longitudinal direction of the back surface of the curved display panel module 110 As shown in FIG.

The variable display apparatus 100 according to the embodiment of the present invention further improves the flatness of the variable display apparatus 100 (FIG. 2) operating in the planar mode through the flatness adjusting unit 300 .

Here, a more detailed description will be given of a state in which the flat display mode (100 in FIG. 2) through the back cover system 200 is changed from the planar mode to the curved mode and the flatness is further improved in the planar mode. would.

This will be described in more detail with reference to FIGS. 5A to 5G.

5A to 5G are diagrams schematically showing a driving mode in which a variable display device according to an exemplary embodiment of the present invention is changed from a planar mode to a curved mode, and an angle block module will be mainly described for convenience of explanation .

5A, the back cover system 200 is mounted along the longitudinal direction to the back surface of the back cover of the display panel module 110 (FIG. 2). The back cover system 200 includes an angle block module (210) are mounted opposite to each other with respect to the drive system (220).

At this time, each of the block units 211a, 211b, and 211c of the angle block module 210 is fixed to the back cover of the display panel module 110 (FIG. 2).

When the motor 221 is driven in the clockwise direction, the rotational force of the gear 223 is transmitted to the pair of first links 215a of the angle block module 210 as the gear 223 rotates clockwise.

At this time, a guide groove 223a corresponding to the rotational force is formed in the gear 223, and a pair of first links 215a are connected to the guide groove 223a. As the gear 223 rotates, 1 link 215a is moved from one end of the guide groove 223a to the other end so that the rotational force of the gear 223 is transmitted to the first link 215a.

At this time, since the angle block module 210 is disposed opposite to both sides of the drive system 220, two gear guide grooves 223a are formed in the gear 223 so as to face each other, and each guide groove 223a A pair of first links 215a of the angle block module 210 located on both sides of the driving system 220 are connected to each other.

The rotational force transmitted to the pair of first links 215a is converted into a linear motion so that the first link 215a is moved to the opposite side from the drive system 220, The force generated by the advance of the first link 215a and the force generated by the first and second angle blocks 213a and 213b are applied to the back cover of the display panel module 110 The coupling portion at the other end of the second link 215b connected to one end of the first link 215a is received in the + Z axis direction defined by the drawing perpendicular to the direction in which the first link 215a advances .

One end of the pair of first links 215a and the other end of the pair of second links 215b are lifted in a direction perpendicular to the direction in which the first link 215a advances, And the shaft bearing 217 connecting the other ends of the pair of second links 215b are also lifted in the + Z axis direction.

At this time, the shaft bearing 217 is lifted up so that the protruding end 212 of the first angle block 213a is inserted into the step 214 of the adjacent second angle block 213b by the shaft bearing 217 .

When the protruding end 212 of the first angle block 213a is inserted into the step 214 of the adjacent second angle block 213b, the shaft bearing 217 continues to move in the + Z axis direction As shown in FIGS. 5C to 5D, the first edge formed with the protruding end 212 of the first angle block 213a and the second edge formed with the step 214 of the second angle block 213b Z-axis direction together.

As the second edge of the second angle block 213b is lifted in the + Z axis direction, the first edge of the second angle block 213b is lowered in the -Z axis direction by the reaction.

At this time, the protruding end 212 is formed so as to be inclined toward the back cover of the display panel module (110 of FIG. 2) towards the end, that is, in the -Z-axis direction defined by the drawing, When the step is inserted into the step 214, the second edge of the second angle block 213b is pressed by the protruding end 212.

Therefore, the first edge of the second angle block 213b is further lowered in the -Z axis direction.

At this time, as the first edge of the second angle block 213b is lowered in the -Z axis direction, the protruding end of the second angle block 213b, which is adjacent to the second angle block 213b and formed at the first edge of the second angle block 213b The second edge of the third angle block 213c formed with the step 214 into which the protrusion 212 is inserted is also lowered in the -Z axis direction.

Although not shown, the first edge of the third angle block 213c whose second edge descends in the -Z axis direction is lifted in the + Z axis direction by the reaction, and this phenomenon occurs when a plurality of angle blocks 213a , 213b, and 213c.

As the first and second edges of the plurality of angle blocks 213a, 213b and 213c are raised and lowered, the angles of the angle blocks 213a, 213b and 213c are increased and decreased, 213a, 213b, and 213c are fixed, the angle of the display panel module 110 is also adjusted.

The angle block module 210 mounted on the other side of the drive system 220 is also driven as described above so that the display panel module 110 mounted on the back surface of the back cover system 200 as shown in FIG. As shown in FIG. 2B, the shape is curved with respect to the vertical direction as a whole.

Thus, a curved mode is realized.

Here, the back cover system 200 of the present invention includes the angle block module 210 as a plurality of block units 211a, 211b, and 211c including the angle blocks 213a, 213b, and 213c, respectively, The block units 211a, 211b, and 211c function as one joint, respectively, so that it is possible to have an accurate curvature in the process of implementing the curved mode.

That is, it is possible to adjust the rising and falling angles of the respective angle blocks 213a, 213b, and 213c, thereby realizing a desired curvature.

5F, when the display panel module 110 is curved, the angle block modules 210 (see FIG. 5F) disposed opposite to each other with respect to the driving system 220 The flatness adjusting unit 300 includes a wire 310 having one end connected to the motor 221 of the driving system 220 and the other end connected to an end of the angle block module 210. The flatness adjusting unit 300 includes a spring 330 are stretched due to the elastic force and the wire 310 is pulled up along the back surface of the curved display panel module 110.

The flatness adjusting unit 300 is connected to the display panel module 110 as a display panel module 110 implemented in a curved surface mode, A force is exerted at both ends in the longitudinal direction of the frame.

Accordingly, the flatness of the central portion of the curved display panel module 110 can be further improved in the process of implementing the variable display device 100 in the curved surface mode.

At this time, the tension of the wire 310 applied through the flatness adjusting unit 300 is less than the force applied through the angle block module 210 so that the display panel module 110 is curved, 100), the flatness of the central portion is improved while the curved surface mode is implemented.

On the other hand, when the motor 221 of the drive system 220 is driven in the counterclockwise direction in order to change from the curved surface mode to the flat plate mode, as the gear 223 rotates counterclockwise, the guide groove 223a The pair of first links 215a located at the other end of the guide groove 223a is moved to one end of the guide groove 223a and the rotational force of the gear 223 is transmitted to the pair of first links 215a.

The rotational force transmitted to the pair of first links 215a is converted into a linear motion so that the pair of first links 215a is moved back to the driving system 220 side, that is, the -X axis direction defined by the drawing.

As the pair of first links 215a are retracted, the shaft bearing 217 lifted in the + Y axis direction is lowered. At the same time, the protruding end 212 of the first angle block 213a is moved in the Y- The first edge of the first angle block 213a and the second edge of the second angle block 213b also descend while being separated from the step 214 of the angle block 213b.

As the second edge of the second angle block 213b is lowered, the first edge of the second angle block 213b is lifted in the + Y axis direction by the reaction.

Such a phenomenon works in conjunction with all of the plurality of angle blocks 213a, 213b, and 213c, so that the angle block modules 210 are all located on a straight line.

Accordingly, the display panel module 110 realizes a planar, planar mode as a whole.

At this time, if the display panel module 110 realizes a flat planar mode, as shown in FIG. 5G, the extended spring 330 of the flatness adjusting unit 300 is restored to its original state, and the curved display The wire 310 of the flatness adjusting part 300 that has been pulled along the back surface of the panel module 110 is sagged.

The wire 310 is deflected only by the tension adjusting portion A of FIG. 3 by the spring 330 and the wire 310 sucked by the motor 221 or the like in the process of deflection of the wire 310 It is possible to prevent entry.

The length of the wire 310 excluding the other portion of the wire 310 to which the one end of the spring 330 is connected and the other end of the wire 330 to which the other end of the spring 330 is connected is not given, The length of the spring 330 corresponds to the longitudinal direction of the back surface of the display panel module 110, which is implemented in a planar mode.

At this time, when the motor 221 is driven further in the counterclockwise direction, tension is imparted by the unspread spring 330 and the wire 310 of the flatness adjusting unit 300.

Accordingly, the flatness adjusting unit 300 exerts a pulling force at both ends of the display panel module 110 in the longitudinal direction by the display panel module 110 implemented in the flat panel mode. Accordingly, the display panel module 110 realizes a planar mode in which the flatness is improved by the pulling force at both ends in the longitudinal direction.

When the variable display device 100 is repeatedly changed in the curved mode and the flat plate mode, the angle block module 210 is disposed opposite to both sides of the driving system 220, The stress due to fatigue is concentrated at the central portion of the variable display device 100 on which the display device 220 is mounted.

Therefore, if the variable display device 100 in which the stress is concentrated is continuously changed to the curved mode and the flat plate type, in the central portion of the variable display device 100 in which stress is concentrated, the variable display device 100 itself Plastic deformation such as warpage of the steel sheet is generated.

In the variable display device 100, flatness at the central portion is lowered in the process of being implemented in the curved surface mode or the planar mode by the plastic deformation at the center portion.

Therefore, the variable display device 100 according to the embodiment of the present invention includes the flatness adjusting unit 300 in the back cover system 200, so that the display panel module 300, through the wire 310 of the flatness adjusting unit 300, The flatness can be improved even if plastic deformation occurs in the central portion of the display device 100 by applying a pulling force at both ends in the longitudinal direction of the display panel module 110 to the display panel 110. [

The wire 310 of the flatness adjusting unit 300 may be provided with a fastening mechanism for adjusting the tension of the wire 310 such as a turnbuckle 340. The turnbuckle 340 may be provided at both ends The part with threaded rod is made up of right-hand thread with one male thread and left thread with male thread on the other end. When the part with female thread, that is, the adjusting nut, is rotated, two male threads approach each other, do.

As a result, when the wire 310 of the flatness adjusting unit 300 is used for a long time and the tension of the wire 310 drops, the tension of the wire 310 can be adjusted through the turnbuckle 340 at this time.

As described above, the variable display device 100 of the present invention can be manufactured by mounting the back cover system 200 on the rear surface of the display panel module 110, thereby changing the display panel module 110 from the planar mode, It can be used as a curved surface forming a curved surface.

That is, when it is installed in an open space such as an open space in the open air or an indoor square such as an airport or a terminal and is intended to convey contents such as news, advertisement, etc. transmitted by an image to many viewers, Type mode so as to be operated in a curved mode so that the user can further improve the degree of immersion and make the image more realistic and make the user feel comfortable.

Accordingly, the user can selectively implement both the planar mode and the curved mode according to the convenience through the single variable display device 100 of the present invention.

In the variable display device 100 of the present invention, vibration and noise are hardly generated in the process of changing to the planar mode and the curved surface mode. When the back cover system 200 is driven by the driving system 220 and the angle block module And the angle block module 210 is directly mounted on the back surface of the back cover of the display panel module 110 so that the volume and weight occupied by the back cover system 200 in the variable display device 100 is minimized Thus, the variable display device 100 of the present invention can realize a light weight and a thin shape while varying the planar mode and the curved mode.

Here, it is preferable that the back cover system 200 is mounted along both longitudinal sides of the display panel module 110.

Particularly, the variable display device 100 according to the embodiment of the present invention further includes a flatness adjusting unit 300 in the back cover system 200, By applying a pulling force to the display panel module 110 at both ends in the longitudinal direction of the panel module 110, flatness can be improved even if plastic deformation occurs in the central portion of the variable display device 100.

The present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

100: variable display
110: Display panel
200: Back Cover System
300: flatness adjusting part 310 (wire, 320: flatness adjusting groove, 330: spring, 340: turnbuckle)

Claims (18)

In a variable display device that is variable in a flat mode or a curved mode forming a flat surface,
A display panel module;
A driving system mounted on the back surface of the display panel module and including a motor and a plurality of angle blocks arranged opposite to each other with respect to the driving system as a center, An angle block module for adjusting the angle;
And a flatness adjusting unit which is provided in the angle block module and has one end connected to the motor and the other end connected to an end of the angle block module,
Wherein the wire pulls both ends in the longitudinal direction of the display panel module to improve the flatness of the central portion of the display panel module.
The method according to claim 1,
Wherein the wire is guided by a flatness adjusting groove provided along a longitudinal direction of one or both sides of the plurality of angle blocks.
The method according to claim 1,
Wherein the flatness adjusting portion includes a tension adjusting portion in which a part of the wire is formed of a double structure of a spring and the wire.
The method of claim 3,
Wherein the tension adjusting unit is connected to one end of the spring on a part of the wire, the other end of the spring is connected to the wire, and the length of the spring is the same as the length from the part of the wire to the other part of the wire Of the display device.
The method according to claim 1,
Wherein the wire has a length corresponding to the longitudinal direction of the back surface of the display panel module in the curved mode.
The method according to claim 1,
Wherein a force pulling the wires from both ends in the longitudinal direction of the display panel module in the curved surface mode is smaller than a force applied to the display panel module by the angle block module.
The method of claim 3,
Wherein the spring is stretched in the curved mode and the wire is pulled tightly along the back surface of the display panel module.
8. The method of claim 7,
Wherein the spring extending in the curved mode is restored to its original state in the planar mode, and the wire is deflected.
9. The method of claim 8,
Wherein a length of the wire after subtracting the deflected wire corresponds to a length direction of the back surface of the display panel module implemented in the flat panel mode.
10. The method of claim 9,
Wherein the motor is further rotated in the planar mode so that the wire is pulled up tightly along the back surface of the display panel module.
The method according to claim 1,
Wherein the wire is provided with a turnbuckle.
The method according to claim 1,
The angle block module comprises a plurality of block units, each block unit being connected to the drive system and including a pair of links and the angle blocks located between the pair of links, And a shaft bearing mounted with a roller is connected between the units, the plurality of links being connected to each other.
13. The method of claim 12,
Wherein the angle block is formed with a protruding end protruding from the first edge, and a stepped portion into which the protruding end is inserted is formed at the second edge.
14. The method of claim 13,
And the protruding end is formed to be inclined toward the display panel module toward the end.
14. The method of claim 13,
Wherein the shaft bearing is guided by the rollers being positioned on the step and both ends of the shaft bearing being inserted into the grooves.
14. The method of claim 13,
Wherein the step is formed with a groove for guiding the roller and the end of the step is provided with a hook of the shaft bearing.
13. The method of claim 12,
Wherein one end of each of the pair of links is extended to form a bearing groove and one end of the link of the neighboring block unit that is in close contact with the bearing groove is formed to be engaged with each other.
13. The method of claim 12,
Wherein the drive system includes a gear for transmitting the rotational force of the motor and the motor to the pair of links, and a guide groove connected to the links is formed in the gear.

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