KR20170070364A - Variable stiffness structure and flexible display device having the same - Google Patents

Abstract

The present invention relates to a variable stiffness structure capable of being deformed into a flexible state capable of being deformed and a rigid state maintaining a constant strength in a flat state, and a flexible display device using the variable stiffness structure.
The variable stiffness structure according to the present invention is a variable stiffness structure in which a main block and an auxiliary block are dividedly attached to one surface of a flexible sheet or a configuration in which a rigid block is divided and disposed on one surface of a flexible sheet, A shape using a throttle to be detachably attached to the magnet, and a control unit for pushing the throttle plate.
When the flexible display device is implemented using such a variable stiffness structure, the display device is rolled up at the time of carrying, thereby improving the portability. In use, the display device can maintain a flat state, and the convenience of use is improved.

Description

TECHNICAL FIELD [0001] The present invention relates to a variable stiffness structure and a flexible display device including the variable stiffness structure.

The present invention relates to a flexible rigid structure capable of being converted into a rigid flexible state and a rigid state capable of maintaining a flat state with strength, and a flexible display device including the flexible rigid structure.

There are various kinds of display devices for displaying images such as a liquid crystal display (LCD), a plasma display (PDP), an organic electroluminescence display (OLED), and an electrophoretic display (EPD).

In recent years, a flexible display capable of being deformed in response to an external physical force has been developed, and studies for applying the display to an image display device have been actively conducted.

The flexible display device refers to a display device that is bent, bent, folded, or curled like a paper while maintaining the display characteristics of a conventional flat panel display device.

The flexible display panel may be embodied as a plastic substrate that can be deformed by external pressure.

The plastic substrate may have a structure in which a base film is treated with a barrier coating on both sides. In the case of the base material, it can be realized by various resins such as PI (Polyimide), PC (Polycarbonate), PET (Polyethyleneterephtalate), PES (Polyethersulfone), PEN (Polysilene Epthalate) and FRP (Fiber Reinforced Plastic). And, the barrier coating is performed on the surfaces facing each other in the base material, and an organic film or an inorganic film can be used to maintain flexibility.

Flexible display panels can be folded or folded in various shapes because the panel itself has flexibility. Meanwhile, the flexible display device can be folded or unfolded according to the use environment. In particular, when the display device is flat, the flexible display device can maintain a constant strength, thereby increasing the convenience of use.

In the case where the display device is kept only in a soft state, the display device may be inconvenient when it is desired to mount the display device. Particularly, in the case of a display device having a touch input method, the user may feel inconvenience at the touch operation.

Further, if the display device can not maintain a flat state, the display image quality is deteriorated.

The present invention provides a variable stiffness structure capable of flexing or folding in a flexible state, rigidity in a rigid state in which a flat state can be maintained by maintaining constant strength, and a display device including the variable stiffness structure.

SUMMARY OF THE INVENTION An object of the present invention is to provide a variable stiffness structure capable of flexibly switching between a flexible state in which it can be folded or bent by a simple operation and a rigid state in which a constant strength is maintained.

Another object of the present invention is to provide a variable stiffness structure which is simple in structure and can be thinned and is applicable to a flexible display device.

Another object of the present invention is to provide a display device capable of flexibly folding or folding a display device according to a user's selection using a variable stiffness structure and capable of being freely switched to a rigid state in which a screen of the display device can be maintained in a flat state And a display device.

The variable stiffness structure according to the present invention is a flexible stiff structure capable of switching between a soft state and a rigid state and includes a flexible sheet having flexibility, a main block provided on one surface of the flexible sheet to provide rigidity and divided into a plurality of blocks, And an auxiliary block connected to one side or both sides of the main block by the flexible sheet so that the flexible sheet is folded and folded so as to overlap with the main block.

In a state where the auxiliary blocks are arranged side by side on the side surface of the main block, the split portions of the main block and the auxiliary block are in a flexible state, and when the flexible sheet is folded and the auxiliary block is superimposed on the main block, A non-supported rigid state is obtained.

The sub-block is divided in the same manner as the main block. If the main block and the sub-block are not divided equally, flexibility is limited in the soft state.

The rigid state can be more firmly maintained by providing a magnet that allows the overlapping portions of the main block and the sub-block to be attached to each other by a magnetic force.

Further, the variable stiffness structure according to the present invention can be divided so as to be rolled up in the form of a polygonal column. At this time, in order to allow the soft sheet to be rolled up in the form of a polygonal column facing outward, the side surfaces of the main block and the auxiliary block are preferably formed to be inclined.

When such a variable stiffness structure is applied to a flexible display device, the flexible display device can be folded into a polygonal prism at the time of carrying, which increases ease of use.

In addition, when the variable stiffness structure is rolled up in the form of a polygonal column, the variable stiffness structure can be superposed in a multilayer structure. At this time, the main block or the auxiliary block of the inner layer and the main block or the auxiliary block of the outer layer can be magnetically attached,

It is also possible to magnetically attach the abutting side surfaces of the main block or the sub block in a state of being rolled up in the form of a polygonal column.

This structure allows the variable stiffness structure to maintain a multi-pole configuration with magnetic force.

A flexible display device can be realized by using the variable stiffness structure and the flexible display panel as described above.

At this time, it is preferable that the sub-block is folded to the front side of the display panel, and the area where the sub-block overlaps the front surface of the display panel is a non-display area where no image is displayed.

This is to prevent the auxiliary block of the variable stiffness structure from covering the display screen when using the flexible display device.

According to another aspect of the present invention, there is provided a display device comprising: a display panel having flexibility; a rigid block divided into a plurality of segments on a rear surface of the display panel; a magnet provided on both sides of the rigid block; And a control panel attached to the side surface of the magnet or attached to the front surface of the display panel and attached to the magnet, thereby realizing a flexible display device.

This structure adjusts the angle of the throttle plate with respect to the display panel so that the soft state and the rigid state are switched.

The throttle plate may be attached to the back surface of the display panel using a flexible sheet, or may be hinged to the rigid block.

When the soft sheet is used to attach the throttle plate to the back surface of the display panel, the structure is simple, which is advantageous in terms of thickness reduction and weight reduction.

According to another aspect of the present invention, there is provided a flexible display device comprising: a flexible display panel; a control unit provided on a rear surface of the display panel and having a magnet on a side surface thereof, And a throttle plate rotatably connected to a side surface of the regulating unit.

Such a structure can arrange the adjusting section and the throttle plate on the back of the display, so that the bezel of the display apparatus can be made slim.

The variable stiffness structure according to the present invention has the effect of being able to switch between a soft state that can be bent by a simple operation and a rigid state that maintains strength in a flat shape.

Further, since the variable stiffness structure according to the present invention is simple in structure and thin, it is easy to apply to a flexible display device.

The display device having the above-described variable stiffness structure can fold or tilt the display device according to the user's needs, and can maintain the strength in a flat state when the display device is used, Bring it.

1 is a perspective view illustrating a variable stiffness structure according to a first embodiment of the present invention.
2 is a side view showing a flexible state of the variable stiffness structure according to the first embodiment of the present invention.
3 is a perspective view illustrating a rigid structure of a variable stiffness structure according to a first embodiment of the present invention.
4 is a side view showing a rigid structure of the variable stiffness structure according to the first embodiment of the present invention.
5 is a perspective view showing a variable stiffness structure according to a second embodiment of the present invention.
6 is a side view illustrating folding and unfolding of a variable stiffness structure according to a second embodiment of the present invention.
7 is a perspective view illustrating a variable stiffness structure according to a third embodiment of the present invention.
8 is a side view of a variable stiffness structure according to a third embodiment of the present invention.
9 is a perspective view showing a variable stiffness structure according to a fourth embodiment of the present invention.
10 is a side view showing a modification of the variable stiffness structure according to the fourth embodiment of the present invention.
11 is a perspective view showing a variable stiffness structure according to a fifth embodiment of the present invention.
12 is a side view showing a modification of the variable stiffness structure according to the fifth embodiment of the present invention.
13 is a perspective view illustrating a flexible display device according to a sixth embodiment of the present invention.
14 is a rear perspective view of a flexible display device according to a sixth embodiment of the present invention.
15 is a side view of a flexible display device according to a sixth embodiment of the present invention.
16 is a perspective view showing a soft state of the flexible display device according to the sixth embodiment of the present invention.
17 is a rear perspective view showing a flexible state of the flexible display device according to the sixth embodiment of the present invention.
18 is a side view showing a flexible state of the flexible display device according to the sixth embodiment of the present invention.
19 is a perspective view showing a rigid state of a flexible display device according to a sixth embodiment of the present invention.
20 is a rear perspective view showing a rigid state of the flexible display device according to the sixth embodiment of the present invention
21 is a side view showing a rigid state of a flexible display device according to a sixth embodiment of the present invention.
22 is a rear perspective view showing a flexible state of the flexible display device according to the seventh embodiment of the present invention.
23 is a side view showing a flexible state of a flexible display device according to a seventh embodiment of the present invention.
24 is a rear perspective view showing a rigid state of the flexible display device according to the seventh embodiment of the present invention.
25 is a side view showing a rigid state of a flexible display device according to a seventh embodiment of the present invention.
26 to 29 are diagrams for explaining the operation of the controller of the flexible display device according to the seventh embodiment of the present invention.

The above and other objects, features, and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings, which are not intended to limit the scope of the present invention. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to denote the same or similar elements.

Hereinafter, the term "an upper (or lower)" or a "top (or lower)" of the substrate means that any structure is disposed or arranged in any manner, as long as any structure is provided or disposed in contact with the upper surface But is not limited to not including other configurations between the substrate and any structure provided or disposed on (or under) the substrate. In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the components from other components, and the terms do not limit the nature, order, order, or number of the components. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; intervening "or that each component may be" connected, "" coupled, "or "connected" through other components.

FIG. 1 is a perspective view showing a variable stiffness structure according to a first embodiment of the present invention, and FIG. 2 is a side view showing a flexible state of the variable stiffness structure according to the first embodiment of the present invention.

The variable stiffness structure according to the first embodiment of the present invention includes a flexible sheet 130, a main block 110 divided and attached to one surface of the flexible sheet 130, And an auxiliary block 120 disposed on one side of the auxiliary block 120.

The soft sheet 130 has flexibility to be freely bent.

The soft sheet 130 may be made of a synthetic resin film or a thin metal plate.

The main block 110 and the auxiliary block 120 provide a certain strength and should have a relatively higher strength than the soft sheet 130. [ It is preferable that the main block 110 and the auxiliary block 120 have a strength not to be bent or deformed due to a small external force or self weight.

Here, the small external force refers to the magnitude of the force applied by the user to fold or to end.

The gap between the main block 110 and the sub-block 120 is set so that the sub-block 120 can be folded and adhered to the back surface of the main block 110 of the sub-block 120.

The main block 110 and the auxiliary block 120 are attached to one surface of the flexible sheet 130 so that a gap is established between the main block 110 and the auxiliary block 120, A gap may be set between the main body 110 and the sub-block 120, but it may be arranged in a substantially close state without a gap.

The main block 110 and the sub-block 120 are preferably divided equally. This is to allow the sub-blocks 120 to be entirely bendable along the divided lines in a state in which they are arranged side by side on one side of the main block 110.

As shown in FIG. 1, when the main block 110 and the sub-block 120 are placed on the same plane, the variable stiffness structure 100 can be bent as shown in FIG.

2 is a side view of the sub block 120. In FIG. 2, the main block 110 is hidden behind the sub block 120. FIG.

In the soft state, since the main block 110 and the auxiliary blocks 120 are connected by the flexible sheet 130 on one side, the main block 110 and the auxiliary blocks 120 can be deformed along the divided lines.

The figure shows a state in which the sheet is bent downward. When the sheet is bent upward, the deformation is limited. The side surfaces of the main block 110 and the auxiliary block 120 interfere with each other and the amount of deformation is extremely small. When the main block 110 and the auxiliary block 120 are closely adhered to each other, they are not bent upward.

FIG. 3 is a perspective view illustrating a rigid structure of a variable stiffness structure according to a first embodiment of the present invention, and FIG. 4 is a side view illustrating a rigid structure of a variable stiffness structure according to the first embodiment of the present invention.

As shown in the drawing, when the auxiliary block 120 is folded and overlapped on one side of the main block 110, the downward deformation is limited so that the variable stiffness structure is in a rigid state in which the variable stiffness structure is not deformed upward or downward.

FIG. 5 is a perspective view showing a variable stiffness structure according to a second embodiment of the present invention, and FIG. 6 is a side view illustrating folding and unfolding of a variable stiffness structure according to a second embodiment of the present invention.

The variable stiffness structure according to the second embodiment of the present invention shows a form that can be rolled up in a triangular prism shape.

5, the variable stiffness structure according to the second embodiment of the present invention is divided into six main blocks 41, 42, 43, 44, 45, and 46, and the main blocks 41, , 44-1, 44-1, 45-1, 46-1, 41-1, 42-1, 43-1, 44 -1, 45-1, 46-1 are divided in the same manner as the main blocks 41, 42, 43, 44, 45, 46. In FIG. 5, the flexible sheet is not shown separately for the sake of convenience, but the upper surfaces of the main blocks and the auxiliary blocks are attached to the flexible sheet as in the first embodiment. In Fig. 6, the flexible sheet is simply indicated by a thick line on one side.

The portion where the auxiliary block overlaps with the main block in the rigid state provides the strength. Therefore, when the auxiliary block is disposed on both sides of the main block, more rigid strength can be secured in the rigid state.

Referring to Fig. 6, bending and spreading which are curled at both sides will be described.

6 shows a state in which a soft sheet (thick line) is attached to the upper surfaces of the main blocks 41, 42, 43, 44, 45 and 46, and in such a state, can do.

At this time, by appropriately setting the thickness and width of the main block, the variable stiffness structure can be deformed so as to be doubly curled in a triangular column shape as shown in the lower part of Fig.

FIG. 7 is a perspective view showing a variable stiffness structure according to a third embodiment of the present invention, and FIG. 8 is a side view illustrating a dried state of the variable stiffness structure according to the third embodiment of the present invention.

A third embodiment of the present invention is shown with a magnet M for providing a fixing force to a main block and an auxiliary block.

The magnet (M) allows the auxiliary block to remain magnetically attached to the main block in the rigid state, and when the variable stiffness structure is flexed in the triangular column shape in the softened state, .

As shown in the drawing, the main block and the sub-block are divided into six pieces in the direction in which the first block 41, the second block, the third block, the fourth block, the fifth block, The fourth block 44 is superimposed on the outer side of the first block 41 which is the curled portion in the rolled state and the inner side of the sixth block 46 as the last portion to be curled The third block 43 is overlapped.

Therefore, by allowing the starting block 41 and the end block 46 to be magnetically fixed to the outer block 44 or the inner block 43, the variable stiffness structure can be stably maintained .

When the variable stiffness structure according to the first, second, and third embodiments is applied to the flexible display device, the flexible display panel can be attached to the surface having the flexible sheet.

In this type of display device, the display screen can be deformed into a shape in which the display screen is curled inward in a soft state of the variable stiffness structure, and when the variable stiffness structure is switched to the rigid state, the display screen is maintained in its strength without being deformed in a flat state .

FIG. 9 is a perspective view showing a variable stiffness structure according to a fourth embodiment of the present invention, and FIG. 10 is a side view showing a modification of the variable stiffness structure according to the fourth embodiment of the present invention.

A fourth embodiment of the present invention shows a variable stiffness structure that allows the display screen to be curled outwardly.

The variable stiffness structure according to the fourth embodiment of the present invention can be formed into an octagonal columnar shape.

To this end, the main blocks 61, 62, 63, 64, 65, 66, 67, 68 and the auxiliary blocks 61-1, 62-1, 63-1, 64-1, 65-1, 62, 62-2, 63-2, 64-2, 65-2, 66-2, 67-2, 68-2) are uniformly divided into eight, (61-1,62-1,63-1,64-1,65-1,66-1,67-1,68-1,61-2,62-2,63-2,64-2,65 62, 62, 63, 64, 65, 66, 67, 68 are arranged on both sides of the main blocks 61, 62,

61-1, 61-1, 61-1, 61-1, 67-1, 68-1, 61-2, 62-2, , 65-2, 66-2, 67-2, 68-2 are folded and fixed to the main blocks 61, 62, 63, 64, 65, 66, 67, 68, 61-1, 61-1, 61-1, 61-1, 67-1, 68-1, 61-2, 62-2, , 65-2, 66-2, 67-2, and 68-2 are made to be in a soft state when they are spread to both sides of the main blocks 61, 62, 63, 64, 65, 66, 67, 68, It is the same as the example.

In FIG. 10, the flexible sheet includes main blocks 61, 62, 63, 64, 65, 66, 67, 68 and auxiliary blocks 61-1, 62-1, 63-1, -1,67-1,68-1,61-2,62-2,63-2,64-2,65-2,66-2,67-2,68-2) As shown in Fig. 10, the soft sheet surface may be curled in an outwardly directed manner.

The sides of the main block and the auxiliary block must be inclined so that the flexible sheet surface is curled outwardly.

In order to be able to be rolled up in the shape of an octagonal prism like the illustrated embodiment, both sides of one block should be formed at an angle of 45 degrees with respect to each other.

FIG. 11 is a perspective view showing a variable stiffness structure according to a fifth embodiment of the present invention, and FIG. 12 is a side view showing a modification of the variable stiffness structure according to the fifth embodiment of the present invention.

The variable stiffness structure according to the fifth embodiment of the present invention further includes the magnet M in the variable stiffness structure of the fourth embodiment.

In the magnet M, some of the auxiliary blocks 62-1, 62-2, 67-1, and 67-2 are connected to the main blocks 62 and 67 by the magnet M in a state where the auxiliary block is superimposed on the main block. So that it can be fixed by magnetic force.

When the auxiliary blocks 61-1 to 68-1 and 61-2 to 62-2 are curled in an octagonal column shape in a soft state spreading to both sides of the main blocks 61 to 68, The magnet M can be disposed on the side surface of the variable stiffness structure 61 and the sides of the magnet M can be attached and fixed to each other by the magnetic force of the magnet M so that the variable stiffness structure can be maintained in an octagonal columnar shape .

FIG. 13 is a perspective view of a flexible display device according to a sixth embodiment of the present invention, FIG. 14 is a rear perspective view of a flexible display device according to a sixth embodiment of the present invention, FIG. 1 is a side view showing a flexible display device according to an example.

As shown in the figure, the flexible display device according to the sixth embodiment of the present invention includes a display panel DP having flexibility, a flexible sheet 80 provided on the back surface of the display panel DP, A rigid block 82 disposed on the back surface of the rigid block 80, a magnet 84 provided on both sides of the rigid block 82, and a magnetic metal piece 84 disposed on both side edges of the soft sheet, And a throttle plate 86 which is a thin plate of material.

The rigid block 82 is divided into a plurality of segments and is disposed on the back surface of the flexible sheet 80 with a spacing distance.

The adjustment plate 86 is attached to the flexible sheet 80 and may be folded to be overlapped on the front surface of the display panel DP or may be folded to be overlapped with the side surface of the rigid block 82.

FIG. 16 is a perspective view showing a flexible state of the flexible display device according to the sixth embodiment of the present invention, FIG. 17 is a rear perspective view showing a flexible state of the flexible display device according to the sixth embodiment of the present invention, 6 is a side view showing a flexible state of a flexible display device according to a sixth embodiment of the present invention.

In the flexible display device according to the sixth embodiment of the present invention, when the throttle plate 86 is overlapped with the front surface of the display panel DP, the bendable flexible state is obtained.

In the soft state, the throttle plate 86 is fixed in a state of being superimposed on the display panel DP by the magnetic force of the magnet 84 provided in the rigid block 82.

The throttle plate 86 is capable of bending deformation of the thin metal plate, and in this state, the display device can be deformed to bend or curl.

FIG. 19 is a perspective view showing a rigid state of a flexible display device according to a sixth embodiment of the present invention, FIG. 20 is a rear perspective view showing a rigid state of the flexible display device according to the sixth embodiment of the present invention, 6 is a side view showing a rigid state of a flexible display device according to a sixth embodiment of the present invention.

The flexible display device according to the sixth embodiment of the present invention is in a rigid state when the throttle plate 86 is erected so as to overlap the side surface of the rigid block 82. [

In the rigid state, the plate surface of the throttle plate 86 is perpendicular to the display panel DP, and the throttle plate 86 connects the side surfaces of the rigid blocks 82, so that the display panel DP is flat Provides strength.

The rigid state is maintained by magnetically attaching the throttle 86 to the magnet 84 provided on the side of the rigid block 82.

FIG. 22 is a rear perspective view showing a flexible state of the flexible display device according to the seventh embodiment of the present invention, and FIG. 23 is a side view showing a flexible state of the flexible display device according to the seventh embodiment of the present invention.

The flexible display device according to the seventh embodiment of the present invention changes the angle of the throttle plate 96 with respect to the display panel DP so that the flexible state and the rigid state are changed similarly to the sixth embodiment, It is.

As shown in the figure, the flexible display device according to the seventh embodiment of the present invention includes a display panel DP having a flexible display, a display panel And an adjusting unit 90 having a magnet on the side surface and adjusting the angle of the adjusting plate 94 with respect to the display panel.

Like the sixth embodiment, the throttle plate 94 may be made of a magnetic metallic thin plate attached to a magnet.

The control unit 90 includes a magnet 94 for magnetically fixing the control plate 94 in a raised state, a protrusion 93 for pushing the control plate 94 so as to overlap the display panel, And a regulating member 92 for regulating the protrusion of the protrusion 93.

As shown in the drawing, the control panel 96 overlaps with the display panel DP in a soft state, so that the display panel DP can be bent or bent.

In the soft state, the protrusion 93 protrudes outward and pushes the throttle plate 94, so that the throttle plate 96 can not stand up and maintains the flat state despite the magnetic force of the magnet 94.

The throttle plate is attached to the soft sheet 96 as shown in Fig. 23, and is connected to the side surface of the magnet 94. Fig. The throttle plate 96 may be connected to the side surface of the magnet 94 in a hinged configuration in place of the soft sheet 95 in an angle changeable manner.

In the illustrated embodiment, the pair of adjustment portions 90 are provided, protrusions are protruded or stored on both sides of the adjustment portion 90, and the adjustment plate 96 is disposed along both side edges of the adjustment portion 90 . The number of arrangements of the regulating portions 90 or the number of the regulating plates 96 may be increased as necessary.

FIG. 24 is a rear perspective view showing a rigid state of a flexible display device according to a seventh embodiment of the present invention, and FIG. 25 is a side view showing a rigid state of the flexible display device according to the seventh embodiment of the present invention.

As shown in the figure, when the plate surface of the throttle plate 96 is erected with respect to the back surface of the display panel, it becomes a rigid state which provides strength in a flat state.

The above-described transition from the soft state to the rigid state can be accomplished through manipulation of the regulating member 92. The control plate 96 is moved upward by the magnetic force of the magnet 94 and the raised control plate 96 is rotated by the magnetic force of the magnet 94 94 by magnetic force.

In the rigid state, since the side surface of the throttle plate 96 supports the rear surface of the display panel DP, the display panel DP is supported in a flat state.

26 to 29 are diagrams for explaining the operation of the controller of the flexible display device according to the seventh embodiment of the present invention.

27 and 28 show the inside of the regulating portion in the rigid state, in which the protrusion 93 protrudes to the outside of the regulating portion And is housed inside.

Referring to FIG. 25, the regulating portion 90 is formed with a guide groove 91a for guiding the upward and downward movement of the regulating member 92 in the housing 91, which forms an outer appearance.

Referring to FIG. 26, a pair of protrusions 93 are hingedly connected to each other, and the hinged portion is connected to the outer adjusting member 92.

An upper block 91b is disposed above the pair of protrusions 93 and a lower block 91c is disposed below the pair of protrusions 93. [

26, the upper block 91b has a pair of projections 93 folded in a V-shape when the adjusting member 92 is moved upward, and the projections 93 are folded into the inside of the adjusting portion 90 .

28, when the adjustment member 92 moves downward, the lower block 91c expands a pair of protrusions into one, and the protrusion 93 protrudes out of the adjustment portion 90 Guidance.

While the present invention has been particularly shown and described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is therefore to be understood that such changes and modifications are intended to be included within the scope of the present invention unless they depart from the scope of the present invention.

100: Variable stiffness structure
110: main block
120: auxiliary block
130: soft sheet
41, 42, 43, 44, 45, 46:
41-1.42-1, 43-1, 44-1, 45-1, 46-1:
41-2.42-2, 43-2, 44-2, 45-2, 46-2:
M: Magnet
61, 62, 63, 64, 65, 66,
61-1, 62-1, 63-1, 64-1, 65-1, 66-1, 67-1, 68-1:
61-2, 62-2, 63-2, 64-2, 65-2, 66-2, 67-2, 68-2:
DP: Display panel
80: soft sheet
82: Rigid block
84: Magnet
86: Throttle
90:
92: adjusting member
93: projection
94: Magnet
96: Throttle

Claims (13)

A flexible sheet having flexibility,
A main block provided on one surface of the soft sheet and divided into a plurality of blocks,
And an auxiliary block connected to one side or both sides of the main block by the flexible sheet to fold the flexible sheet and to be overlapped with the main block.
The method according to claim 1,
Wherein the auxiliary block is divided into a plurality of blocks in the same manner as the main block.
3. The method according to claim 1 or 2,
Wherein the magnet is provided so that the mutually overlapping portions of the main block and the sub-block can be attached to each other by magnetic force.
3. The method of claim 2,
Wherein the variable stiffness structure is divided into a polygonal columnar shape.
5. The method of claim 4,
Wherein the variable stiffness structure is inclined at a side of the main block and the auxiliary block so that the flexible sheet can be curled in a polygonal columnar shape facing outward.
5. The method of claim 4,
Wherein the variable stiffness structure includes a magnet so that a main block or an auxiliary block of the inner layer and a main block or an auxiliary block of the outer layer are magnetically attached to each other when the variable stiffness structure is folded in a polygonal column shape.
5. The method of claim 4,
Wherein the variable stiffness structure includes a magnet so that the mutually facing side surfaces of the main block or the auxiliary block can be magnetically attached to the variable stiffness structure in a state where the variable stiffness structure is folded in the form of a polygonal column.
A main block provided on one side of the flexible sheet and divided into a plurality of main blocks, and a flexible sheet connected to one side or both sides of the main block, the flexible sheet being folded, A variable stiffness structure including an auxiliary block arranged so as to be able to
And a flexible display panel laminated on an outer surface of the flexible sheet.
9. The method of claim 8,
Wherein the auxiliary block is folded to the front side of the display panel so that an area where the auxiliary block is superimposed on the front surface of the display panel is a non-display area where no image is displayed.
A display panel having flexibility;
A rigid block divided into a plurality of blocks on a rear surface of the display panel;
Magnets provided on both sides of the rigid block; And
And a control plate attached to the side surface of the magnet to be rotatably connected to the display panel or attached to the front surface of the display panel and attached to the magnet.
11. The method of claim 10,
Wherein the control panel is attached to the back surface of the display panel using a flexible sheet or is hinged to the rigid block.
A display panel having flexibility;
An adjuster provided on a rear surface of the display panel and having a magnet on a side surface and a projection protruding or retracted from the side surface; And
And a control plate of a magnetic material material rotatably connected to a side surface of the control unit and attached to the magnet of the control unit.
13. The method of claim 12,
Wherein the adjustment plate is attached to the back surface of the display panel using a flexible sheet or connected to the adjustment unit by a hinge.

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