WO2021132775A1 - Display device - Google Patents

Abstract

A display device is disclosed. The display device according to the present disclosure comprises: a display panel for displaying an image; a panel cover which is attached to the rear surface of the display panel and which includes a plurality of segments; a flexible sheet which has inextensibility and which is attached to the rear surfaces, being space from each other, of the plurality of segments; and a panel roller having an outer peripheral surface around which the display panel, the panel cover, and the flexible sheet are wound.

Description

display device

The present disclosure relates to a display device.

As the information society develops, the demand for display devices is also increasing in various forms. Display) and various display devices have been researched and used.

Among them, a display device using an organic light emitting diode (OLED) has superior luminance characteristics and viewing angle characteristics compared to a liquid crystal display device, and does not require a backlight unit, so it can be implemented in an ultra-thin shape.

In addition, the flexible display panel may be bent or wound around a roller. By using the flexible display panel, it is possible to implement a rollable display device that can be wound around a roller or unwound from the roller as needed. A lot of research has been done on a structure for winding or unwinding a flexible display panel on a roller.

It is an object of the present disclosure to provide a display device capable of preventing the display panel from being damaged by friction while the display panel is stacked when the display panel is wound around a panel roller.

The objects of the present disclosure are not limited to the above-mentioned objects, and other objects and advantages of the present disclosure that are not mentioned may be understood by the following description, and will be more clearly understood by the examples of the present disclosure.

Moreover, it will be readily apparent that the objects and advantages of the present disclosure may be realized by the means and combinations thereof indicated in the claims.

A display device according to the present disclosure includes a display panel for displaying an image, a panel cover attached to a rear surface of the display panel and including a plurality of segments, and a plurality of segments attached to the rear surfaces spaced apart from each other and being inextensible. The branch includes a flexible sheet, and a panel roller on which the display panel, the panel cover, and the flexible sheet are wound on an outer circumferential surface.

The display device according to the present disclosure includes a display panel for displaying an image, a panel cover attached to a rear surface of the display panel to support the display panel, and a panel cover including the plurality of segments; inextensible), and a panel roller on which the display panel, the panel cover, and the flexible sheet are wound on an outer circumferential surface. In a state in which the display panel is unwound from the panel roller, the flexible sheet is stretched out, and in a state in which the display panel is wound around the panel roller, portions of the flexible sheet may be folded into spaces between the plurality of segments. can

Accordingly, when the display panel is wound around the panel roller, it is possible to prevent the display panel from being damaged by friction while the display panels are stacked.

The effect of the display device according to the present disclosure will be described as follows.

According to the present disclosure, when the display panel is wound around the panel roller, it is possible to prevent the display panel from being damaged by friction while the display panel is stacked.

In addition, according to the present disclosure, when the display panel is released from the panel roller, the display panel can be maintained in a flat state without being bent.

In addition, according to the present disclosure, an aesthetic feeling can be provided to a user who looks at the display device from the rear or side rear of the display device in a state in which the display panel is unwound from the panel roller.

In addition to the above-described effects, specific effects of the present disclosure will be described together while describing specific details for carrying out the invention below.

1 to 59 are diagrams illustrating examples of display devices according to embodiments of the present disclosure.

60 to 64 are diagrams illustrating a portion of a display device according to embodiments of the present disclosure.

Hereinafter, the embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but the same or similar components are assigned the same reference numerals regardless of reference numerals, and overlapping descriptions thereof will be omitted.

The suffixes "module" and "part" for the components used in the following description are given or mixed in consideration of only the ease of writing the specification, and do not have a meaning or role distinct from each other by themselves.

In addition, in describing the embodiments disclosed in the present specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in the present specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical spirit disclosed in the present specification is not limited by the accompanying drawings, and all changes included in the spirit and scope of the present disclosure , should be understood to include equivalents or substitutes.

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

When a component is referred to as being “connected” or “connected” to another component, it is understood that the other component may be directly connected or connected to the other component, but other components may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that no other element is present in the middle.

The singular expression includes the plural expression unless the context clearly dictates otherwise.

In the following description, although embodiments are described with reference to specific drawings, if necessary, reference numbers not appearing in the specific drawings may be referred to, and reference numbers not appearing in the specific drawings are referred to in other drawings (in the other drawings). figures) are used where the above reference numbers appear.

Referring to FIG. 1 , the display device 100 may include a display unit 20 and a housing 30 . The housing 30 may have an internal space. At least a portion of the display unit 20 may be located inside the housing 30 . At least a portion of the display unit 20 may be located outside the housing 30 . The display unit 20 may display a screen.

A direction parallel to the longitudinal direction of the housing 30 may be referred to as a first direction DR1 , a +x-axis direction, a -x-axis direction, a left direction, or a right direction. The direction in which the display unit 20 displays the screen may be referred to as the +z axis, the forward direction, or the forward direction. A direction opposite to the direction in which the display unit 20 displays the screen may be referred to as the -z axis, the rear direction, or the rear direction. The third direction DR3 may be parallel to the +z-axis direction or the -z-axis direction. A direction parallel to the height direction of the display device 100 may be referred to as a second direction DR2 , a +y-axis direction, a -y-axis direction, an upper direction, or a lower direction.

The third direction DR3 may be a direction perpendicular to the first direction DR1 and/or the second direction DR2 . The first direction DR1 and the second direction DR2 may be collectively referred to as a horizontal direction. In addition, the third direction DR3 may be referred to as a vertical direction. The left-right direction LR may be parallel to the first direction DR1 , and the vertical direction UD may be parallel to the second direction DR2 .

Referring to FIG. 2 , the entire display unit 20 may be located inside the housing 30 . At least a portion of the display unit 20 may be located outside the housing 30 . The degree to which the display unit 20 is exposed to the outside of the housing 30 may be adjusted as necessary.

Referring to FIG. 3 , the display unit 20 may include a display panel 10 and a plate 15 . The display panel 10 may be flexible. For example, the display panel 10 may be an organic light emitting display (OLED) panel.

The display panel 10 may have a front surface for displaying an image. The display panel 10 may have a rear surface opposite to the front surface. The front surface of the display panel 10 may be covered with a light-transmitting material. For example, the light-transmitting material may be a synthetic resin or a film.

The plate 15 may be coupled, fastened, or attached to the rear surface of the display panel 10 . The plate 15 may include a metal material. The plate 15 may be referred to as a module cover 15 , a cover 15 , a display panel cover 15 , a panel cover 15 , and an apron 15 .

Referring to FIG. 4 , the plate 15 may include a plurality of segments 15c. A magnet 64 may be positioned within a recess 118 of the segment 15c. The groove 118 may be located on a surface of the segment 15c facing the display panel 10 . A groove 118 may be located in the front of each segment 15c. Since the magnet 64 is received inside the groove 118 , the magnet 64 may not protrude out of the segment 15c. The display panel 10 may be flat without being crumpled even when it comes into contact with the segment 15c.

Referring to FIG. 5 , a plurality of magnets 64 may be positioned on the link 73 . For example, at least one magnet 64 may be positioned on the first arm 73a and at least one magnet 64 may be positioned on the second arm 73b. The plurality of magnets 64 may be spaced apart from each other.

Referring to FIG. 6 , one magnet 64 may be positioned on each of the first arm 73a and the second arm 73b. The magnet 64 may have a shape extending long in the long side direction of the first arm 73a and the second arm 73b. Since the magnet 64 has a shape extending long in the long side direction of the first arm 73a and the second arm 73b, the area of the portion where the link 73 is in close contact with the display panel and the module cover may be increased. Accordingly, the adhesion between the link 73 and the display panel and the module cover may be strong.

Referring to FIG. 7 , the magnet 64 may be positioned in the depression 321 formed on the link 73 . The recessed part 321 may have a shape recessed inward of the link 73 . The magnet 64 may be coupled to the link 73 through at least one screw 187 .

A width LHW at which the depression 321 is recessed inward of the link 73 may be equal to or greater than a thickness MGW of the magnet 64 . If the thickness MGW of the magnet 64 is greater than the width LHW of the depression 321 , the display panel 10 and the module cover 15 may not be in close contact with the link 73 . In this case, the display panel 10 may be crumpled or not flat.

A panel protection unit 97 may be positioned on the rear side of the display panel 10 . The panel protection unit 97 may prevent the display panel 10 from being damaged due to friction with the module cover 15 . The panel protection part 97 may include a metal material. The panel protection part 97 may have a very thin thickness. For example, the panel protection part 97 may have a thickness of about 0.1 mm.

Since the panel protection part 97 includes a metal material, mutual attraction with the magnet 64 may act. Accordingly, the module cover 15 positioned between the panel protection part 97 and the link 73 may be in close contact with the magnet 64 even if it does not include a metal material.

Referring to FIG. 8 , the module cover 15 may be in close contact with the link 73 by the upper bar 75 on the upper side and the guide bar 234 on the lower side (see FIG. 15 ). A portion of the link 73 between the upper bar 75 and the guide bar 234 may not be in close contact with the module cover 15 . Alternatively, the central portion of the link 73 may not be in close contact with the module cover 15 . The center of the link 73 may be near the arm joint 152 . In this case, the distance between the module cover 15 and the link 73 (APRD1, APLD2) may not be constant. In this case, the display panel 10 may be bent or bent.

9, when the magnet 64 is positioned on the depression 321 of the link 73, the magnet 64 attracts the panel protection part 97, so the module cover 15 is also a magnet at the same time. (64) can be adhered to. That is, the central portion of the link 73 may be in close contact with the module cover 15 .

Referring to FIG. 10 , a bead 136 may be formed on the upper surface of the segment 15b. The bead 136 may be recessed into the segment 15b. The bead 136 may have a shape recessed in the -y-axis direction. For example, the bead 136 may be formed by pressing the segment 15b. A plurality of beads 136 may be formed on the segment 15b. The plurality of beads 136 may be spaced apart from each other. The bead 136 may improve the stiffness of the segment 15b. The bead 136 may prevent the shape of the segment 15b from being deformed from an external impact.

Referring to FIG. 11 , the source PCB 120 may be located above the module cover 15 . When the source PCB 120 is rolled up or rolled down, the position may change with the movement of the module cover 15 . The FFC cable 231 may be located in the center of the module cover 15 with respect to the first direction. The FFC cable 231 may be located at both ends of the module cover 15 with respect to the first direction.

Referring to FIG. 12 , the segment 15d may include a depression 425 that is depressed in the -z-axis direction. The depression 425 may form a space between the display panel 10 and the module cover 15 . The FFC cable 231 may be accommodated in a space formed by the depression 425 . In addition, the depression 425 may improve the rigidity of the segment 15d.

The bead 136 may be located on the segment 15d except for the portion where the depression 425 is located. The bead 136 may not be located in the portion where the depression 425 is located because the thickness of the segment 15d in the third direction becomes thinner.

Referring to FIG. 13 , a through portion 437 may be positioned at the center of the segment 15e in the first direction. The penetrating portion 437 may penetrate the central portion of the segment 15e in the second direction. That is, the through portion 437 may be a hole located in the segment 15e. The through portion 437 may be a portion in which the FFC cable 231 is positioned. Since the through portion 437 is formed in the segment 15e, the thickness of the segment 15e may be reduced compared to that of the FFC cable 231 positioned in the recessed portion 425 .

The bead 136 may be located on the segment 15e except for the portion where the through portion 437 is located. Since the thickness of the segment 15e in the third direction is reduced in the portion where the through portion 437 is located, the bead 136 may not be located.

Referring to FIG. 14 , the top case 167 may cover the display panel 10 and the module cover 15 as well as the source PCB 120 and the upper bar 75 . One side of the upper bar 75 may be coupled to the rear surface of the module cover 15 , and the other side may be coupled to the source PCB 120 . The upper bar 75 may be fixed to the module cover 15 to support the source PCB 120 .

The lower end of the FFC cable 231 may be connected to the timing controller board 105 (refer to FIG. 15 ) inside the panel roller 143 (refer to FIG. 15 ). The FFC cable 231 may be wound or unwound on the panel roller 143 together with the display unit 20 .

A portion of the FFC cable 231 may be positioned between the display panel 10 and the module cover 15 . A portion of the FFC cable 231 positioned between the display panel 10 and the module cover 15 may be referred to as a first portion 231a. The first portion 231a may be positioned in the depression 425 formed by the plurality of segments 15d. Alternatively, the first portion 231a may be accommodated in the depression 425 formed by the plurality of segments 15d.

A portion of the FFC cable 231 may pass through the segment 15f. A portion of the FFC cable 231 passing through the segment 15f may be referred to as a second portion 231b. The segment 15f may include a first hole 521a formed on the front surface and a second hole 521b formed on the rear surface. The first hole 521a and the second hole 521b may be interconnected to form one hole 521 . The hole 521 may penetrate the segment 15f in the third direction. The second portion 231b may pass through the hole 521 . The hole 521 may be referred to as a connection hole 521 .

An upper end of the FFC cable 231 may be electrically connected to the source PCB 120 . A part of the FFC cable 231 may be located on the rear side of the module cover 15 . A portion of the FFC cable 231 located on the rear surface of the module cover 15 may be referred to as a third portion 231c. The third portion 231c may be electrically connected to the source PCB 120 .

The third portion 231c may be covered by the top case 167 . Accordingly, the third portion 231c may not be exposed to the outside.

Referring to FIG. 15 , the FFC cable 231 may be connected to the timing controller board 105 mounted on the panel roller 143 . A through hole 615 may be formed on the panel roller 143 , and the FFC cable 231 may be connected to the timing controller board 105 through the through hole 615 .

The through hole 615 is located on one side of the panel roller 143 and may penetrate the outer peripheral portion of the panel roller 143 . The FFC cable 231 may be connected to one side of the timing controller board 105 through the through hole 615 .

Even if the FFC cable 231 is positioned on the outer periphery of the panel roller 143 , the connection to the timing controller board 105 may be maintained due to the through hole 615 . Accordingly, the FFC cable 231 may not be twisted by rotating together with the panel roller 143 .

A portion of the FFC cable 231 may be wound around the panel roller 143 . A portion of the FFC cable 231 wound around the panel roller 143 may be referred to as a fourth portion 231d. The fourth portion 231d may be in contact with the outer peripheral surface of the panel roller 143 .

A portion of the FFC cable 231 may pass through the through hole 615 . A portion of the FFC cable 231 passing through the through hole 615 may be referred to as a fifth portion 231e.

A lower end of the FFC cable 231 may be electrically connected to the timing controller board 105 . A portion of the FFC cable 231 may be located inside the panel roller 143 . A portion of the FFC cable 231 positioned inside the panel roller 143 may be referred to as a sixth portion 231f. The sixth part 231f may be electrically connected to the timing controller board 105 .

Referring to FIG. 16 , the lower end of the display panel 10 may be connected to the roller 143 . The display panel 10 may be wound or unwound on the roller 143 . The front surface of the display panel 10 may be coupled to a plurality of source PCBs 120 . The plurality of source PCBs 120 may be spaced apart from each other.

The source COF (Chip On Film) 123 may connect the display panel 10 and the source PCB 120 . The source COF 123 may be located in front of the display panel 10 . The roller 143 may include a first part 331 and a second part 337 . The first part 331 and the second part 337 may be fastened by screws. The timing controller board 105 may be mounted inside the roller 143 .

The source PCB 120 may be electrically connected to the timing controller board 105 . The timing controller board 105 may transmit digital video data and a timing control signal to the source PCB 120 .

The cable 117 may electrically connect the source PCB 120 and the timing controller board 105 . For example, the cable 117 may be a flexible flat cable (FFC). The cable 117 may pass through the hole 331a. The hole 331a may be formed in the seating part 379 or the first part 331 . The cable 117 may be positioned between the display panel 10 and the second part 337 .

The seating part 379 may be formed on the outer periphery of the first part 331 . The seating portion 379 may be formed by stepping a portion of the outer periphery of the first part 331 . The seating portion 379 may form a space (B). When the display unit 20 is wound around the roller 143 , the source PCB 120 may be accommodated in the mounting unit 379 . The source PCB 120 may not be bent or bent, and durability may be improved by being accommodated in the mounting portion 379 .

The cable 117 may electrically connect the timing controller board 105 and the source PCB 120 .

Referring to FIG. 17 , the roller 143 on which the display unit 20 is wound may be installed on the first base 31 . The first base 31 may be a bottom surface of the housing 30 . The roller 143 may extend long in the longitudinal direction of the housing 30 . The first base 31 may be connected to the side surface 30a of the housing 30 .

18 and 19 , the beam 31a may be formed on the first base 31 . The beam 31a may improve bending or torsional rigidity of the first base 31 . Many parts may be installed on the first base 31 , and the first base 31 may receive a large load. Since the first base 31 has improved rigidity, sagging due to a load may be prevented. For example, the beam 31a may be formed by a press process.

The second base 32 may be spaced apart from the upper side of the first base 31 . A space S1 may be formed in the first base 31 and the second base 32 . The roller 143 on which the display unit 20 is wound may be accommodated in the space S1 . The roller 143 may be positioned between the first base 31 and the second base 32 .

The second base 32 may be connected to the side surface 30a of the housing 30 . The bracket 33 may be fastened to the upper surface of the first base 31 . The bracket 33 may be fastened to the side surface 30a of the housing 30 .

The beam 32a may be formed on the second base 32 . The beam 32a may improve the bending or torsional rigidity of the second base 32 . For example, the beam 32a may be formed by a press process.

The third part 32d may be connected to the first part 32b and the second part 32c. The fourth part 32e may be connected to the first part 32b and the second part 32c. A space S2 may be formed between the third part 32d and the fourth part 32e. Accordingly, the bending or torsional rigidity of the second base 32 may be improved. The third part 32d may be referred to as a reinforcing rib 32d or a rib 32d. The fourth part 32e may be referred to as a reinforcing rib 32e or a rib 32e.

Many parts may be installed on the second base 32 , and the second base 32 may receive a large load. Since the second base 32 has improved rigidity, sagging due to a load may be prevented.

The first reinforcing plate 34 may be positioned between the first base 31 and the second base 32 . The first reinforcing plate 34 and the second base 32 may be fastened by screws. The first reinforcing plate 34 may support the second base 32 . The first reinforcing plate 34 may prevent the second base 32 from sagging. The first reinforcing plate 34 may be positioned at a central portion of the first base 31 or a central portion of the second base 32 . The first reinforcing plate 34 may include a curved portion 34a. The curved portion 34a may be formed along the roller 143 . The curved portion 34a may not come into contact with the roller 143 or the display unit 20 wound around the roller 143 . The curved portion 34a may maintain a predetermined distance from the roller 143 so as not to interfere with the rotation of the roller 143 .

The second reinforcing plate 35 may be fastened to the first base 31 and the first reinforcing plate 34 . The second reinforcing plate 35 may support the first reinforcing plate 34 . The second reinforcing plate 35 may be positioned behind the first reinforcing plate 34 . The second reinforcing plate 35 may be located at the rear of the first base 31 . The second reinforcing plate 35 may be positioned perpendicular to the first base 31 . The second reinforcing plate 35 may be fastened to the beam 31a of the first base 31 . The second base 32 may face the front or rear surface of the housing 30 .

Referring to FIG. 20 , the second base 32f may not form a space. When the load received by the second base 32f is not large, the second base 32f may have sufficient rigidity by including the beam 32g. The first base 31' may include a beam 31a'.

21 and 22 , the motor assembly 810 may be installed on the second base 32 . The driving shaft of the motor assembly 810 may be formed on both sides. The right driving shaft and the left driving shaft of the motor assembly 810 may rotate in the same direction. Alternatively, the right driving shaft and the left driving shaft of the motor assembly 810 may rotate in opposite directions.

The motor assembly 810 may include a plurality of motors. A plurality of motors may be connected in series with each other. The motor assembly 810 may output a high torque by connecting a plurality of motors in series.

The lead screw 840 may be positioned on the left and right sides of the motor assembly 810 , respectively. The motor assembly 810 may be connected to the lead screw 840 . The coupling 811 may connect the lead screw 840 to the driving shaft of the motor assembly 810 .

The lead screw 840 may be threaded along the longitudinal direction. The direction of the thread formed on the right lead screw 840 and the direction of the thread formed on the left lead screw 840 may be opposite to each other. A direction of a thread formed on the right lead screw 840 may be the same as a direction of a thread formed on the left lead screw 840 . The pitch of the left lead screw 840 and the right lead screw 840 may be the same.

The bearings 830a and 830b may be installed on the second base 32 . The bearings 830a and 830b may support both sides of the lead screw 840 . The bearings 830a and 830b may include an inner bearing 830b positioned close to the motor assembly 810 and an outer bearing 830a positioned far from the motor assembly 810 . The lead screw 840 may be stably rotated by the bearings 830a and 830b.

Slide 820 may engage lead screw 840 . The slide 820 may advance and retreat in the longitudinal direction of the lead screw 840 according to the rotation of the lead screw 840 . The slide 820 may move between the outer bearing 830a and the inner bearing 830b. The slide 820 may be positioned on the left lead screw 840 and the right lead screw 840 , respectively. The left slide 820 may engage the left lead screw 840 . The right slide 820 may engage the right lead screw 840 .

The left slide 820 and the right slide 820 may be positioned symmetrically with respect to the motor assembly 810 . Due to the driving of the motor assembly 810 , the left slide 820 and the right slide 820 may move away from or close to each other by the same distance.

Referring to FIG. 23 , the motor assembly 810 may include a plate 813 . The plate 813 may be referred to as a mount plate 813 or a motor mount plate 813 . The coupling portion 32h may be formed on the upper surface of the second base 32 . The plate 813 may be fastened to the coupling portion 32h through the screw S. The motor assembly 810 may be spaced apart from the upper surface of the second base 32 . The washer 813 may be positioned between the upper surface of the plate 813 and the screw S. The washer 813 may include a rubber material. The washer 813 may reduce vibration generated in the motor assembly 810 . The washer 813 may improve driving stability of the display device 100 .

Referring to FIG. 24 , the guide rail 860 may be installed on the second base 32 . The guide rail 860 may be positioned in parallel with the lead screw 840 . Slide 820 may engage guide rail 860 . The first stopper 861b may be located on one side of the guide rail 860 , and the second stopper 861a may be located on the other side of the guide rail 860 . A movable range of the slide 820 may be limited between the first stopper 861b and the second stopper 861a.

The spring 850 may surround the lead screw 840 . The lead screw 840 may pass through the spring 850 . The spring 850 may be positioned between the inner bearing 830b and the slide 820 . One side of the spring 850 may contact the inner bearing 830b, and the other side of the spring 850 may contact the slide 820 . The spring 850 may provide an elastic force to the slide 820 .

When the slide 820 is caught by the first stopper 861b, the spring 850 may be maximally compressed. When the slide 820 is caught by the first stopper 861b, the length of the spring 850 may be the minimum. When the slide 820 is caught by the first stopper 861b, the distance between the slide 820 and the inner bearing 830b may be the minimum.

Referring to FIG. 25 , when the slide 820 is caught by the second stopper 861a, the spring 850 may be maximally tensioned. When the slide 820 is caught by the second stopper 861b, the length of the spring 850 may be the maximum. When the slide 820 is caught by the second stopper 861a, the distance between the slide 820 and the inner bearing 830b may be the maximum.

Referring to FIG. 26 , the first part 820a may be engaged with the guide rail 860 . The first part 820a may move along the guide rail 860 . Movement of the first part 820a in the longitudinal direction of the guide rail 860 may be restricted. The second part 820b may be positioned above the first part 820a. The first part 820a and the second part 820b may be fastened through screws. The second part 820b may be spaced apart from the guide rail 860 . The lead screw 840 may penetrate the second part 820b. For example, the second part 820b may include a male thread engaged with a female thread of the lead screw 840 . Accordingly, even when the lead screw 840 rotates, the slide 820 may stably move forward and backward along the guide rail 860 without rotating.

The third part 820c may be coupled to one side of the second part 820b. The third part 820c may contact the spring 850 . The third part 820c may receive an elastic force from the spring 850 .

27 and 28 , the link mount 920 may be installed on the second base 32 . One side of the second arm 912 may be pivotally connected to the link mount 920 . The other side of the second arm 912 may be pivotally connected to the joint 913 . The other side of the second arm 912 may be pivotally connected to the second shaft 913b. One side of the rod 870 may be pivotally connected to the slide 820 . The other side of the rod 870 may be pivotally connected to the second arm 912 or the third arm 915 . One side of the third arm 915 may be pivotally connected to the link mount 920 . The other side of the third arm 915 may be pivotably connected to the other side of the rod 870 . Link mount 920 may include shaft 921 . The second arm 912 or the third arm 911 may be pivotally connected to the shaft 921 .

The link bracket 951 may be referred to as a link cap 951 . The link bracket 951 may be coupled to the top case 950 . The top case 950 may be referred to as a case top 950 , an upper bar 950 , a top 950 , or a bar 950 . The top case 950 may be located at the top of the display unit 20 . The display unit 20 may be fixed to the top case 950 .

One side of the first arm 911 may be pivotably connected to the joint 913 . One side of the first arm 911 may be pivotally connected to the first shaft 913a. The other side of the first arm 911 may be pivotably connected to the link bracket 951 or the top case 950 .

The gear g1 may be formed on one side of the first arm 911 . The gear g2 may be formed on the other side of the second arm 912 . The gear g1 of the first arm 911 and the gear g2 of the second arm 912 may be meshed with each other.

When the slide 820 moves closer to the outer bearing 830a, the second arm 912 or the third arm 915 may stand up. In this case, a direction in which the second arm 912 or the third arm 915 stands up may be referred to as a standing direction DRS.

The second arm 912 may include a protrusion 914 protruding in the standing direction DRS. The protrusion 914 may be referred to as a connecting portion 914 . The third arm 915 may include a protrusion 916 protruding in the standing direction DRS. The protrusion 916 may be referred to as a connecting portion 916 . The protrusion 914 of the second arm 912 and the protrusion 916 of the third arm 915 may face or contact each other. The other side of the rod 870 may be fastened to the protrusion 914 of the second arm 912 or the protrusion 916 of the third arm 915 .

The link 910 may include a first arm 911 , a second arm 912 , a third arm 915 , and/or a joint 913 .

29 and 30 , an angle between the second arm 912 or the third arm 915 and the second base 32 may be referred to as theta S. When the rod 870 is connected to the upper side of the second part 820b, the angle between the rod 870 and the second base 32 is theta A, and the rod 870 is the second arm 912 or the third The minimum force for standing the arm 915 may be referred to as Fa. When the rod 870 is connected in the middle of the second part 820b, the angle between the rod 870 and the second base 32 is theta B, and the rod 870 is the second arm 912 or the third The minimum force for standing the arm 915 may be referred to as Fb. When the rod 870 is connected to the lower side of the second part 820b, the angle between the rod 870 and the second base 32 is theta C, and the rod 870 is the second arm 912 or the third The minimum force for standing the arm 915 may be referred to as Fc.

For the same theta S, the relation theta A < theta B < theta C can be established. In addition, a relationship of Fc < Fb < Fa may be established for the same theta S. If the angle between the second arm 912 or the third arm 915 and the second base 32 is the same, as the angle between the rod 870 and the second base 32 increases, the second arm 912 ) or the force required to stand the third arm 915 may be reduced. The rod 870 may be connected to the lower side of the second part 820b to reduce a load applied to the motor assembly 810 .

Referring to FIG. 31 , the rod 870 ′ may not be connected to the protrusion of the second arm 912 ′ or the protrusion of the third arm 915 ′. When the angle between the second arm 912 ′ or the third arm 915 ′ and the second base 32 is theta S, the angle between the rod 870 ′ and the second base 32 is called theta 1 . The minimum force for the rod 870 ′ to stand up the second arm 912 ′ or the third arm 915 ′ may be referred to as F1 .

Referring to FIG. 32 , the rod 870 may be connected to the protrusion 914 of the second arm 912 or the protrusion 916 of the third arm 915 . If the angle between the second arm 912 or the third arm 915 and the second base 32 is theta S, the angle between the rod 870 and the second base 32 may be referred to as theta 2 and , the minimum force for the rod 870 to stand up the second arm 912 or the third arm 915 may be referred to as F2.

Referring to FIG. 33 , when theta S is the same, theta 2 may be greater than theta 1 . When Theta S is the same, F1 may be greater than F2. If the angle between the second arms 912 and 912' and the second base 32 is the same, as the angle between the rods 870 and 870' and the second base 32 increases, the second arm 912, The force required to stand 912') may be reduced. Since the rod 870 is connected to the protrusions 914 and 916 , the second arm 912 can stand up with a small force compared to a case in which the rod 870 is not connected to the protrusions. The rod 870 may be connected to the protrusions 914 and 916 to reduce a load applied to the motor assembly 810 .

Referring to FIG. 34 , the second arm 912 or the third arm 915 may have a central axis CR. When the rod 870 is fastened with the second arm 912 away from the central axis CR by a distance r, the angle between the rod 870 and the second base 32 may be referred to as theta 2 , and the rod ( The minimum force for the 870 to stand up the second arm 912 or the third arm 915 may be referred to as F3 . When the rod 870 is fastened with the second arm 912 away from the central axis CR by a distance r', the angle between the rod 870 and the second base 32 may be referred to as theta 2', The minimum force for the rod 870 to stand up the second arm 912 or the third arm 915 may be referred to as F4. When the rod 870 is fastened with the second arm 912 away from the central axis CR by a distance r", the angle between the rod 870 and the second base 32 may be called theta 2", The minimum force for the rod 870 to stand up the second arm 912 or the third arm 915 may be referred to as F5.

35 , when theta S is the same, theta 2" may be greater than theta 2', and theta 2' may be greater than theta 2. When theta S are the same, F3 may be greater than F4, and F4 may be greater than F5. The farther the rod 870 is fastened from the central axis CR, the smaller the force required to stand the second arm 912 may be. By being fastened away from the CR), the load applied to the motor assembly 810 may be reduced.

Referring to FIG. 36 , the first arm 911 and the second arm 912 may be in contact with or close to the rear surface of the display unit 20 . When the first arm 911 and the second arm 912 are positioned close to or in contact with the rear surface of the display unit 20 , the display unit 20 can be stably wound or unwound on the roller. The link mount 920 may include a first part 922 and a second part 923 . The first part 922 and the second part 923 may face each other. A space S4 may be formed between the first part 922 and the second part 923 . The first part 922 may face the display unit 20 . The first part 922 may be located closer to the display unit 20 than the second part 923 . The second arm 912 may be pivotably connected to the front surface of the first part 922 . A portion of the third arm 915 may be accommodated in the space S4 and may be pivotally connected to the first part 922 or the second part 923 .

Referring to FIG. 37 , the rod 870 may include a first part 871 and a second part 872 . The first part 871 may include a connection part 871a on one side. The second part 872 of the slide 820 may form a space S5 therein. The connection part 871a may be inserted into the space S5. The connection part 871a may be pivotably connected to the second part 820b (refer to FIG. 36 ) of the slide 820 . The other side of the first part 871 may be connected to one side of the second part 872 . The other side of the second part 872 may be pivotably connected to the second arm 912 or the third arm 915 . The first part 871 may form a space S3 therein. The first part 871 may include a hole 871b. The lead screw 840 may be accommodated in the hole 871b or the space S3 .

A distance between the second part 872 and the display unit 20 may be D1. The second arm 912 may have a thickness W1. A portion of the third arm 915 accommodated in the space S4 may have a thickness W3. The thickness W3 may be equal to the distance between the first part 922 and the second part 923 . A portion of the third arm 915 that is not accommodated in the space S4 may have a thickness W2. The first part 922 may have a thickness W4. The thickness W2 may be greater than the thickness W3. The thickness W2 may be equal to the sum of the thickness W3 and the thickness W4. D1 may be the sum of the thickness W1 and the thickness W2.

The second arm 912 may contact or be located close to the rear surface of the display unit 20 , and the third arm 915 may be located between the second arm 912 and the second part 872 . The second part 872 may stably transmit power for standing the second arm 912 due to the third arm 915 . The second part 872 may be connected to the first part 871 by moving forward with respect to the rotation axis of the lead screw 840 in order to stably stand up the second arm 912 or the third arm 915 . . Due to this, a gap between the second arm 912 and the second part 872 may be minimized.

Referring to FIG. 38 , the pusher 930 may be mounted on the link mount 920 . The pusher 930 may be referred to as a lifter 930 . The second part 932 may be fastened to the first part 931 . The second part 932 may be in contact with or separated from the link bracket 951 . The second part 932 may be made of a material having high elasticity. The first part 931 may be made of a material having lower elasticity than the second part 932 . The first part 931 may be made of a material having higher rigidity than the second part 932 . The first part 931 and the second part 932 may be collectively referred to as a head 936 . The head 936 may be located above the link mount 920 .

The third part 933 may be connected to the first part 931 . Alternatively, the third part 933 may extend downward from the first part 931 . The third part 933 may be referred to as a tail 933 . The fourth part 934 may protrude from the third part 933 . The link mount 920 may form a space S6 , and the third part 933 may be accommodated in the space S6 . The space S6 may be opened upward. The space S6 in which the third part 933 is accommodated may be adjacent to the space S4 in which the third arm 915 is accommodated (refer to FIG. 37 ). The second part 932 of the link mount 920 may include a hole 924 . The hole 924 may be a long hole formed long in the vertical direction. The length of the hole 924 may be H1. The fourth part 934 may be inserted into the hole 924 . The spring 935 may be accommodated in the space S6. The spring 935 may be located below the third part 933 . The spring 935 may provide an elastic force to the third part 933 in a vertical direction.

The head 936 may be larger than the diameter of the space S6 . When the head 936 is hung on the upper end of the space S6 , the height of the head 936 from the second base 32 may be the minimum. The minimum height of the head 936 may be referred to as H2. When the height of the head 936 is the minimum, the fourth part 934 may be hung at the lower end of the space S6 . When the height of the head 936 is minimal, the spring 935 can be maximally compressed. When the height of the head 936 is the minimum, the elastic force provided by the spring 935 may be the maximum. When the height of the head 936 is the minimum, the height of the top case 950 may be the minimum.

The pusher 930 may provide an elastic force to the link bracket 951 while in contact with the link bracket 951 . Due to this, a load applied to the motor assembly 810 to stand up the link 910 may be reduced.

Referring to FIG. 39 , when the link 910 is sufficiently erected, the pusher 930 may be separated from the link bracket 951 . When the pusher 930 is separated from the link bracket 951 , the height of the head 936 from the second base 32 may be the maximum. The maximum height of the head 936 may be referred to as H3. When the height of the head 936 is the maximum, the fourth part 934 may be caught on the upper end of the hole 924 (refer to FIG. 38 ). When the height of the head 936 is maximum, the spring 935 can be tensioned to the maximum. When the height of the head 936 is the maximum, the elastic force provided by the spring 935 may be the minimum. The maximum height H3 of the head 936 may be substantially equal to the sum of the minimum height H2 of the head 936 and the length H1 of the hole.

Referring to FIG. 40 , the display unit 20 may be maximally wound around the roller 143 . The display device 100 may be symmetrical with respect to the motor assembly 810 . The height of the top case 950 may be the minimum. The slide 820 may be at a position closest to the inner bearing 830b. The slide 820 may be in a state caught by the first stopper 861b. The spring 850 may be in a maximally compressed state. The pusher 930 may contact the link bracket 951 . The height of the pusher 930 may be the minimum.

Referring to FIG. 41 , about half of the display unit 20 may be wound around the roller 143 . The display device 100 may be symmetrical with respect to the motor assembly 810 . About half of the display unit 20 may be unwound from the roller 143 . The slide 820 may be positioned between the first stopper 861b and the second stopper 861a. The pusher 930 may be separated from the link bracket 951 . The height of the pusher 930 may be the maximum.

Referring to FIG. 42 , the display unit 20 may be in a state in which it is maximally released by the roller 143 . The display device 100 may be symmetrical with respect to the motor assembly 810 . The height of the top case 950 may be the maximum. The slide 820 may be at a position closest to the outer bearing 830a. The slide 820 may be caught by the second stopper 861a. The spring 850 may be in a maximum tensioned state. The pusher 930 may be separated from the link bracket 951 . The height of the pusher 930 may be the maximum.

43 to 46 , the link mounts 920a and 920b may be installed on the base 31 . The link mounts 920a and 920b may include a right link mount 920a spaced apart to the right from the first right bearing 830a and a left link mount 920b spaced apart to the left from the second left bearing 830d. .

Links 910a and 910b may be connected to link mounts 920a and 920b. The links 910a and 910b may include a right link 910a connected to the right link mount 920a and a left link 910b connected to the left link mount 920b.

The right link 910a may be referred to as a first link. The left link 910b may be referred to as a second link. The right link mount 920a may be referred to as a first link mount 920a. The left link mount 920b may be referred to as a second link mount 920b.

The links 910a and 910b may include first arms 911a and 911b, second arms 912a and 912b, and arm joints 913a and 913b. One side of the second arms 912a and 912b may be rotatably connected to the link mounts 920a and 920b. The other side of the second arms 912a and 912b may be rotatably connected to the arm joints 913a and 913b. One side of the first arms 911a and 911b may be rotatably connected to the arm joints 913a and 913b. The other side of the first arms 911a and 911b may be rotatably connected to the link brackets 951a and 951b.

The link brackets 951a and 951b are a right link bracket 951a connected to the first arm 911a of the right link 910a and a left link bracket 951b connected to the first arm 911b of the left link 910b. ) may be included. The link brackets 951a and 951b may be connected to the upper bar 950 .

The upper bar 950 may connect the right link bracket 951a and the left link bracket 951b.

The rods 870a and 870b may connect the sliders 860a and 860b and the links 910a and 910b. One side of the rods 870a and 870b may be rotatably connected to the sliders 860a and 860b. The other side of the rods 870a and 870b may be rotatably connected to the second arms 912a and 912b. The rods 870a and 870b are the right rod 870a connecting the right slider 860a and the second arm 912a of the right link 910a, and the second arm of the left slider 860b and the left link 910b. It may include a left rod 870b for connecting 912b). The right rod 870a may be referred to as a first rod 870a. The left rod 870b may be referred to as a second rod 870b.

Specifically, a structure formed by the right lead screw 840a, the right slider 860a, the right rod 870a, and the right link 910a will be described. The right slider 860a may include a body 861a and a rod mount 862a. The body 861a may have a thread (SS) formed on the inner circumferential surface. The thread formed in the body 861a may be engaged with the thread RS of the right lead screw 840a. The right lead screw 840a may pass through the body 861a.

The rod mount 862a may be formed on the right side of the body 861a. The rod mount 862a may be rotatably connected to one side of the right rod 870a. The rod mount 862a may include a first rod mount 862a1 and a second rod mount 862a2 . The first rod mount 862a1 may be disposed in front of the right lead screw 840a. The second rod mount 862a2 may be disposed behind the right lead screw 840a. The first rod mount 862a1 and the second rod mount 862a2 may be spaced apart from each other. The second rod mount 862a2 may be spaced apart from the first rod mount 862a1 in the -z-axis direction. The right lead screw 840a may be positioned between the first rod mount 862a1 and the second rod mount 862a2 .

The rod mount 862a may be rotatably connected to one side of the rod 870a through the connecting member C1. The connecting member C1 may pass through the rod mount 862a and the right rod 870a.

The right rod 870a may be rotatably connected to the second arm 912a through the connecting member C2. The connecting member C2 may pass through the second arm 912a and the right rod 870a.

The right rod 870a may include a transfer part 871a connected to the second arm 912a of the right link 910a and a cover 872a connected to the rod mount 862a of the right slider 860a. . The transmission unit 871a may transmit a force generated when the right slider 860a advances and retreats along the right lead screw 840a to the right link 910a.

The cover 872a may include a first plate 873a disposed in front of the right lead screw 840a. The first plate 873a may be disposed perpendicular to the base 31 . Alternatively, the first plate 873a may face the right lead screw 840a.

The cover 872a may include a second plate 874a disposed behind the right lead screw 840a. The second plate 874a may be disposed perpendicular to the base 31 . Alternatively, the second plate 874a may face the right lead screw 840a. Alternatively, the second plate 874a may be spaced apart from the first plate 873a. The right lead screw 840a may be positioned between the first plate 873a and the second plate 874a.

The cover 872a may include a third plate 875a connecting the first plate 873a and the second plate 874a. The third plate 875a may be connected to the transfer unit. The third plate 875a may be positioned above the right lead screw 840a.

The cover 872a may include a fourth plate 876a connecting the first plate 873a and the second plate 874a. The fourth plate 876a may be connected to the third plate 875a. The fourth plate 876a may be positioned above the right lead screw 840a.

One side of the first plate 873a may be connected to the first rod mount 862a1 . The first plate 873a and the first rod mount 862a1 may be connected to each other through the connecting member C1'. The other side of the first plate 873a may be connected to the third plate 875a.

One side of the second plate 874a may be connected to the second rod mount 862a2. The second plate 874a and the second rod mount 862a2 may be connected to each other through the connecting member C1 . The other side of the second plate 874a may be connected to the third plate 875a.

When the right slider 860a moves closer to the motor assembly 810 , the right lead screw 840a and the right rod 870a may contact each other. When the right lead screw 840a and the right rod 870a come into contact, mutual interference may occur and movement of the right slider 860a may be restricted.

The cover 872a may provide a space S1 therein. The first plate 873a , the second plate 874a , the third plate 875a , and the fourth plate 876a may form a space S1 . When the right slider 860a moves closer to the motor assembly 810 , the right lead screw 840a may be accommodated or escaped into the space S1 provided by the cover 872a. The right slider 860a may move closer to the motor assembly 810 than when the cover 872a is absent due to the space S1 provided by the cover 872a. That is, the cover 872a may expand the movable range of the right slider 860a by providing a space S1 therein. In addition, since the right lead screw 840a is accommodated in the cover 872a, the size of the housing 30 (refer to FIG. 2 ) can be reduced.

In addition, the cover 872a may limit the minimum value of the angle theta S formed between the second arm 912a and the base 31 . When theta S is sufficiently small, the third plate 875a of the cover 872a may contact the second arm 912a and support the second arm 912a. The third plate 875a supports the second arm 912a, thereby limiting the minimum value of theta S and preventing the second arm 912a from deflecting. That is, the cover 872a may serve as a stopper for preventing the second arm 912a from sagging. In addition, the third plate 875a limits the minimum value of theta S, thereby reducing the initial load for standing the second arm 912a.

The lead screws 840a and 840b may be driven by one motor assembly 810 . The lead screws 840a and 840b are driven by one motor assembly 810 , so that the second arms 912a and 912b can stand symmetrically. However, when the lead screws 840a and 840b are driven by one motor assembly 810 , the load applied to the motor assembly 810 in order to make the second arms 912a and 912b stand may be excessively large. In this case, the third plate 875a limits the minimum value of theta S, thereby reducing the load applied to the motor assembly 810 for standing the second arms 912a and 912b.

The structure formed by the left lead screw 840b, the left slider 860b, the left rod 870b, and the left link 910b includes the above-described right lead screw 840a, right slider 860a, right rod 870a and A structure formed by the right link 910a may be symmetrical. In this case, the axis of symmetry may be the axis of symmetry ys of the motor assembly 810 .

Referring to FIG. 47 , guides 850a, 850b, 850c, and 850d may be connected to bearings 830a, 830b, 830c, and 830d. The guides 850a, 850b, 850c, and 850d may include right guides 850a and 850b disposed on the right side of the motor assembly 810 and left guides 850c and 850d disposed on the left side of the motor assembly 810. have.

One side of the right guides 850a and 850b may be connected to the first right bearing 830a and the other side may be connected to the second right bearing 830b. The right guides 850a and 850b may be positioned parallel to the right lead screw 840a. Alternatively, the right guides 850a and 850b may be spaced apart from the right lead screw 840a.

The right guides 850a and 850b may include a first right guide 850a and a second right guide 850b. The first right guide 850a and the second right guide 850b may be spaced apart from each other. The right lead screw 840a may be positioned between the first right guide 850a and the second right guide 850b.

The right slider 860a may include a protrusion. Alternatively, the display device may include a protrusion formed on the right slider 860a. The protrusion may be formed on the body of the slider. The protrusion may include a front protrusion (not shown) protruding from the body 861a of the right slider 860a in the +z-axis direction and a rear protrusion 865a protruding from the body of the slider in the -z-axis direction.

The first right guide 850a may pass through the rear protrusion 865a. Alternatively, a first hole 863a formed in the rear protrusion may be included, and the first right guide 850a may pass through the first hole 863a. The first hole 863a may be formed in the x-axis direction. The first hole 863a may be referred to as a hole 863a.

The second right guide (not shown) may pass through the front protrusion (not shown). Alternatively, a second hole (not shown) formed in the front protrusion may be included, and the second right guide may pass through the second hole. The second hole may be formed in the x-axis direction.

The right guides 850a and 850b may guide the right slider 860a to move forward and backward along the right lead screw 840a to move more stably. Since the right guides 850a and 850b stably guide the right slider 860a, the right slider 860a may move forward and backward along the right lead screw 840a without rotating with respect to the right lead screw 840a.

The structure formed by the left guides 850c and 850d, the left bearings 830a, 830b, 830c, and 830d, the left slider 860b and the left lead screw 840b has the above-mentioned right guides 850a and 850b, the right bearing ( 830a, 830b, 830c, and 830d), the right slider 860a, and the right lead screw 840a may form a symmetrical structure. In this case, the axis of symmetry may be the axis of symmetry ys of the motor assembly 810 .

Referring to FIG. 48 , the first springs 841a and 841b may be inserted into the lead screws 840a and 840b. Alternatively, the lead screws 840a and 840b may pass through the first springs 841a and 841b. The first springs 841a and 841b may include a first right spring 841a disposed on the right side of the motor assembly 810 and a first left spring 841b disposed on the left side of the motor assembly 810 .

The first right spring 841a may be disposed between the right slider 860a and the second right bearing 830b. One end of the first right spring 841a may be in contact with or separated from the right slider 860a. The other end of the first right spring 841a may be in contact with or separated from the second right bearing 830b.

When the second arm 912a is completely lying with respect to the base 31 , the distance between the right slider 860a and the second right bearing 830b may be the distance RD3 . The first right spring 841a may have a length greater than the distance RD3 in a compressed or untensioned state. Accordingly, when the second arm 912a is fully lying with respect to the base 31 , the first right spring 841a may be compressed between the right slider 860a and the second right bearing 830b . In addition, the first right spring 841a may provide a restoring force to the right slider 860a in the +x-axis direction.

When the second arm 912a changes from a fully lying state to a standing state with respect to the base 31, the restoring force provided by the first right spring 841a may assist the second arm 912a to stand up. . As the first right spring 841a assists the second arm 912a to stand up, the load on the motor assembly 810 may be reduced.

The lead screws 840a and 840b may be driven by one motor assembly 810 . The lead screws 840a and 840b are driven by one motor assembly 810 , so that the second arms 912a and 912b can stand symmetrically. However, when the lead screws 840a and 840b are driven by one motor assembly 810 , the load applied to the motor assembly 810 in order to make the second arms 912a and 912b stand may be excessively large. At this time, as the first right spring 841a assists the second arm 912a to stand up, the load on the motor assembly 810 may be reduced, and the motor assembly 810 may cause the second arm 912a to stand up. load can be reduced.

Alternatively, when the second arm 912a changes from a standing state with respect to the base 31 to a completely lying state, the restoring force provided by the first right spring 841a is applied to the second arm 912a by the base 31 . It is possible to alleviate the shock that occurs when lying on the That is, the first right spring 841a may serve as a damper when the second arm 912a lies against the base 31 . As the first right spring 841a functions as a damper, a load on the motor assembly 810 may be reduced.

The structure formed by the first left spring 841b, the left bearings 830a, 830b, 830c, and 830d, the left slider 860b, the left lead screw 840b, and the second arm 912a is the first right spring described above. The structure formed by the 841a, the right bearings 830a, 830b, 830c, and 830d, the right slider 860a, the right lead screw 840a, and the second arm 912a may be symmetrical. In this case, the axis of symmetry may be the axis of symmetry ys of the motor assembly 810 .

49 , the second springs 851a and 851b may be inserted into the guides 850a, 850b, 850c, and 850d. Alternatively, the guides 850a, 850b, 850c, and 850d may pass through the second springs 851a and 851b. The second springs 851a and 851b may include a second right spring 851a disposed on the right side of the motor assembly 810 and a second left side spring 851b disposed on the left side of the motor assembly 810 .

The second right spring 851a may be formed in plurality. The second right spring 851a may include springs 940a and 940b inserted into the first right guide 850a and springs 940a and 940b inserted into the second right guide 850b. Alternatively, the second right spring 851a may include springs 940a and 940b through which the first right guide 850a passes and springs 940a and 940b through which the second right guide 850b passes.

The guides 850a, 850b, 850c, and 850d may include locking jaws 852a and 852b. The locking jaws 852a and 852b include a right locking jaw 852a disposed on the right side of the motor assembly 810 and a motor It may include a left locking jaw 852b disposed on the left side of the assembly 810 .

The right engaging protrusion 852a may be disposed between the right slider 860a and the second right bearing 830b. In addition, the second right spring 851a may be disposed between the right slider 860a and the second right bearing 830b. One end of the second right spring 851a may be in contact with or separated from the right slider 860a. The other end of the second right spring 851a may be in contact with or separated from the right locking jaw 852a.

When the second arm 912a is completely lying with respect to the base 31 , the distance between the right slider 860a and the right locking jaw 852a may be the distance RD4 . The second right spring 851a may have a length greater than distance RD4 in a compressed or untensioned state. Accordingly, when the second arm 912a is completely lying with respect to the base 31 , the second right spring 851a may be compressed between the right slider 860a and the right locking jaw 852a. In addition, the second right spring 851a may provide a restoring force to the right slider 860a in the +x-axis direction.

When the second arm 912a changes from a fully lying state to a standing state with respect to the base 31, the restoring force provided by the second right spring 851a may assist the second arm 912a to stand up. . As the second right spring 851a assists the second arm 912a to stand up, the load on the motor assembly 810 may be reduced.

The lead screws 840a and 840b may be driven by one motor assembly 810 . The lead screws 840a and 840b are driven by one motor assembly 810 , so that the second arms 912a and 912b can stand symmetrically. However, when the lead screws 840a and 840b are driven by one motor assembly 810 , the load applied to the motor assembly 810 in order to make the second arms 912a and 912b stand may be excessively large. At this time, as the second right spring 851a assists the second arm 912a to stand up, the load on the motor assembly 810 can be reduced, and the motor assembly 810 to make the second arm 912a stand up. load can be reduced.

Alternatively, when the second arm 912a changes from a standing state with respect to the base 31 to a fully lying state, the restoring force provided by the second right spring 851a is applied to the second arm 912a by the base 31 . It is possible to alleviate the shock that occurs when lying on the That is, the second right spring 851a may serve as a damper when the second arm 912a lies against the base 31 . As the second right spring 851a functions as a damper, a load on the motor assembly 810 may be reduced.

The structure formed by the second left spring 851b, the left locking jaw 852b, the left slider 860b, the left guides 850c and 850d and the second arm 912a is the above-described second right spring 851a, It may be symmetrical with the structure formed by the right locking jaw 852a, the right slider 860a, the right guides 850a and 850b, and the second arm 912a. In this case, the axis of symmetry may be the axis of symmetry ys of the motor assembly 810 .

50 to 52 , the second arm 912a may stand up by receiving a restoring force from the first right spring 841a and the second right spring 851a.

An angle between the second arm 912a and the base 31 may be referred to as an angle theta S. An angle between the right rod 870a and the base 31 may be referred to as an angle theta T. The force of the motor assembly 810 to move the right slider 860a in the +x-axis direction may be referred to as FA. The force applied by the first right spring 841a to the right slider 860a may be referred to as FB. The force applied by the second right spring 851a to the right slider 860a may be referred to as FC. The force transmitted by the right rod 870a to the second arm 912a may be referred to as FT.

When the second arm 912a is fully lying with respect to the base 31 , the angle theta S and the angle theta T may have a minimum value. When the second arm 912a is changed from a fully lying state to a standing state with respect to the base 31 , the angle theta S and the angle theta T may gradually increase.

When the second arm 912a is fully lying with respect to the base 31 , the first right spring 841a may be compressed. The compressed first right spring 841a may provide a restoring force FB to the right slider 860a. The restoring force FB may act in the +x direction. When the second arm 912a is completely lying with respect to the base 31, the amount of compression displacement of the first right spring 841a may be the maximum, and the magnitude of the restoring force FB may have the maximum value. When the second arm 912a is changed from a completely lying state to a standing state with respect to the base 31, the amount of compression displacement of the first right spring 841a may gradually decrease, and the magnitude of the restoring force FB may gradually decrease. can

When the second arm 912a is fully lying with respect to the base 31 , the second right spring 851a may be compressed. The compressed second right spring 851a may provide a restoring force FC to the right slider 860a. The restoring force FC can act in the +x direction. When the second arm 912a is completely lying with respect to the base 31 , the amount of compression displacement of the second right spring 851a may be the maximum, and the magnitude of the restoring force FC may have the maximum value. When the second arm 912a changes from a completely lying state to a standing state with respect to the base 31, the amount of compression displacement of the second right spring 851a may gradually decrease, and the magnitude of the restoring force FC may gradually decrease. can

The force FT that the right rod 870a transmits to the second arm 912a is the force FA that the motor assembly 810 moves the right slider 860a in the +x axis and the restoring force FB of the first right spring 841a and It may be the resultant force of the restoring force FC of the second right spring 851a.

When the second arm 912a starts to stand while the second arm 912a is completely lying on the base 31 , the load on the motor assembly 810 may be maximum. At this time, the magnitude of the restoring force FB provided by the first right spring 841a may be the maximum. In addition, the magnitude of the restoring force FC provided by the second springs 851a and 851b may be the maximum.

When the second arm 912a changes from a completely lying state to a standing state with respect to the base 31 , the restoring force provided by the first right spring 841a and the second right spring 851a is the second arm 912a ) can help to stand up. As the first right spring 841a and the second right spring 851a assist the second arm 912a to stand up, the load on the motor assembly 810 may be reduced.

The first right spring 841a and the second right spring 851a may simultaneously provide a restoring force (the result of the restoring force FB and the restoring force FC) to the right slider 860a. The restoring force (the result of the restoring force FB and the restoring force FC) is provided to the right slider 860a until the distance RD5 between the right slider 860a and the right locking jaw 852a becomes equal to the length of the second right spring 851a. can be

When the distance RD5 between the right slider 860a and the right locking jaw 852a is equal to the length of the second right spring 851a, the compression displacement of the second right spring 851a may be zero. When the amount of compression displacement of the second right spring 851a becomes zero, the restoring force FC provided by the second right spring 851a to the right slider 860a may be zero.

When the distance RD5 between the right slider 860a and the right locking jaw 852a is greater than the length of the second right spring 851a, only the first right spring 841a can provide the restoring force FB to the right slider 860a. . The restoring force FB may be provided to the right slider 860a until the distance RD6 between the right slider 860a and the second right bearing 830b becomes equal to the length of the first right spring 841a.

When the distance RD6 between the right slider 860a and the second right bearing 830b is equal to the length of the first right spring 841a, the compression displacement amount of the first right spring 841a may be zero. When the amount of compression displacement of the first right spring 841a becomes zero, the restoring force FB provided by the first right spring 841a to the right slider 860a may be zero.

When the distance RD6 between the right slider 860a and the second right bearing 830b is greater than the length of the first right spring 841a, the motor assembly 810 may be configured to operate the first right spring 841a or the second right spring 851a. ), the second arm 912a may stand without being provided with a restoring force.

The first left spring 841b, the second left spring 851b, the left locking jaw 852b, the left slider 860b, the left guides 850c and 850d, the left lead screw 840b, the left rod 870b and The structure formed by the second arm 912a includes the above-described first right spring 841a, second right spring 851a, right locking jaw 852a, right slider 860a, right guides 850a and 850b, A structure formed by the right lead screw 840a, the right rod 870a, and the second arm 912a may be symmetrical. In this case, the axis of symmetry may be the axis of symmetry ys of the motor assembly 810 .

Referring to FIG. 53 , the pushers 930a and 930b may be connected to the link mounts 920a and 920b. The pushers 930a and 930b may include a right pusher 930a disposed on the right side of the motor assembly 810 and a left pusher 930b disposed on the left side of the motor assembly 810 .

Link mounts (920a, 920b) may form an accommodation space (A). The accommodation space (A) can accommodate the springs (940a, 940b) and the pushers (930a, 930b). The springs 940a and 940b may include a right spring 940a disposed on the right side of the motor assembly 810 and a left side spring 940b disposed on the left side of the motor assembly 810 . The accommodation space (A) may be referred to as an inner space (A).

The link mounts 920a and 920b may include a first hole 922a connecting the receiving space A and the external space (the first hole corresponding to 920b is not shown). The first hole 922a may be formed on the upper surface of the link mounts 920a and 920b. The first hole 922a may be referred to as a hole 922a.

The pushers 930a and 930b may be positioned perpendicular to the base 31 . Alternatively, the pushers 930a and 930b may be disposed parallel to the y-axis. The springs 940a and 940b may be positioned perpendicular to the base 31 . Alternatively, the springs 940a and 940b may be disposed parallel to the y-axis.

The pushers 930a and 930b may include first parts 931a and 931b and second parts 932a and 932b. The second parts 932a and 932b may be connected to lower sides of the first parts 931a and 931b. Lower ends of the second parts 932a and 932b may be connected to the springs 940a and 940b. All or part of the second parts 932a and 932b may be accommodated in the accommodation space A formed by the link mounts 920a and 920b. The second parts 932a and 932b may have a diameter equal to or smaller than a diameter of the first hole 922a. The second parts 932a and 932b may pass through the first hole 922a.

The first parts 931a and 931b may be located outside the link mounts 920a and 920b. Alternatively, the first parts 931a and 931b may be located outside the accommodation space A of the link mounts 920a and 920b. The first parts 931a and 931b may have a larger diameter than the diameter of the first hole 922a.

The first parts 931a and 931b may be in contact with or spaced apart from the link brackets 951a and 951b. For example, when the second arms 912a and 912b are fully lying with respect to the base 31 , the first parts 931a and 931b may be in contact with the link brackets 951a and 951b. Alternatively, when the second arms 912a and 912b completely stand with respect to the base 31 , the first parts 931a and 931b may be spaced apart from the link brackets 951a and 951b.

When the first parts 931a and 931b contact the link brackets 951a and 951b, the pushers 930a and 930b may receive a force from the link brackets 951a and 951b. The force received by the pushers 930a and 930b may be in a downward direction. Alternatively, the force received by the pushers 930a and 930b may be in the -y-axis direction. Alternatively, the link brackets 951a and 951b may press the pushers 930a and 930b. The direction in which the link brackets 951a and 951b press the pushers 930a and 930b may be downward. Alternatively, the direction in which the link brackets 951a and 951b press the pushers 930a and 930b may be the -y-axis direction.

When the first parts 931a and 931b are subjected to a force, the springs 940a and 940b may be compressed. The compressed springs 940a and 940b may provide a restoring force to the pushers 930a and 930b. The restoring force may be in a direction opposite to the direction of the force applied to the first parts 931a and 931b. Alternatively, the restoring force may act in the +y-axis direction.

The link mounts 920a and 920b may include a second hole 921a (a second hole corresponding to 920b is not shown). The second hole 921a may connect the accommodating space A and the external space. All or part of the springs 940a and 940b may be exposed to the outside through the second hole 921a. All or part of the pushers 930a and 930b may be exposed to the outside through the second hole 921a. During maintenance or repair of the display device, the service provider may check the operation state of the pushers 930a and 930b through the second hole 921a. The second hole 921a may provide convenience of maintenance or repair to the service provider.

54 to 56 , the right link 910a may stand up by receiving a restoring force from the right pusher 930a. The reference to the right link 910a will be described.

An angle between the second arm 912a and the base 31 may be referred to as an angle theta S. The force transmitted by the right rod 870a to the second arm 912a may be referred to as FT. The force transmitted by the right pusher 930a to the right link bracket 951a may be referred to as FP.

Referring to FIG. 54 , when the second arm 912a is fully lying with respect to the base 31 , the angle theta S may have a minimum value. The right spring 940a connected to the right pusher 930a may be compressed to the maximum, and the magnitude of the restoring force FP may have a maximum value. The compressed right spring 940a may provide a restoring force FP to the right pusher 930a. The right pusher 930a may transmit the restoring force FP to the right link bracket 951a. The restoring force FP may act in the +y-axis direction.

When the second arm 912a is completely lying with respect to the base 31 , the distance HL from the base 31 to the upper end of the right pusher 930a may have a minimum value. The first part 931a of the right pusher 930a may protrude to the outside of the right link mount 920a, and the second part 932a of the right pusher 930a has an accommodation space ( 923a).

Referring to FIG. 55 , when the second arm 912a changes from a completely lying state to a standing state with respect to the base 31, the angle theta S may gradually increase. The amount of compression displacement of the right spring 940a may gradually decrease, and the magnitude of the restoring force FP may gradually decrease.

As the angle theta S gradually increases, at least a portion of the second part 932a of the right pusher 930a may protrude to the outside of the right link mount 920a. A length in which the second part 932a of the right pusher 930a protrudes to the outside of the right link mount 920a may be referred to as a length HP. The distance HL from the base 31 to the upper end of the right pusher 930a may be increased by HP compared to the case where the second arm 912a is fully lying with respect to the base 31 .

Referring to FIG. 56 , when the standing of the second arm 912a with respect to the base 31 proceeds, the right pusher 930a and the right link bracket 951a may be separated from each other. The compression displacement amount of the right spring 940a may be zero. When the amount of compression displacement of the right spring 940a becomes zero, the restoring force FP provided by the right pusher 930a to the right link bracket 951a may be zero.

In addition, the length HP of the second part 932a of the right pusher 930a protruding to the outside of the right link mount 920a may have a maximum value. In addition, the distance HL from the base 31 to the upper end of the right pusher 930a may have a maximum value.

That is, the right pusher 930a applies a restoring force to the right link bracket 951a while the right pusher 930a and the right link bracket 951a are in contact, thereby assisting the second arm 912a to stand up. and reduce the load of the motor assembly 810 .

The lead screws 840a and 840b may be driven by one motor assembly 810 . The lead screws 840a and 840b are driven by one motor assembly 810 , so that the second arms 912a and 912b can stand symmetrically. However, when the lead screws 840a and 840b are driven by one motor assembly 810 , the load applied to the motor assembly 810 in order to make the second arms 912a and 912b stand may be excessively large. In this case, the right pusher 930a applies a restoring force to the right link bracket 951a , thereby assisting the second arm 912a to stand up and reducing the load on the motor assembly 810 .

Alternatively, when the second arm 912a is changed from a standing state with respect to the base 31 to a completely lying state, the right pusher 930a has a restoring force provided to the right link bracket 951a by the link 910a on the base. (31) can mitigate the impact that occurs when lying down. That is, the restoring force that the right pusher 930a provides to the right link bracket 951a may serve as a damper when the link 910a lies against the base 31 . Since the right pusher 930a serves as a damper, a load on the motor assembly 810 may be reduced.

The structure formed by the left pusher 930b, the left spring 940b, the left link bracket 951b, the left link mount 920b and the left rod 870b is the above-described right pusher 930a, right spring 940a, The right link bracket 951a, the right link 910a mount and the right rod 870a may form a symmetrical structure. In this case, the axis of symmetry may be the axis of symmetry of the motor assembly 810 .

57 to 59 , the panel roller 143 may be installed on the base 31 . The panel roller 143 may be installed in front of the lead screws 840a and 840b. Alternatively, the panel roller 143 may be disposed parallel to the length direction of the lead screws 840a and 840b. Alternatively, the panel roller 143 may be spaced apart from the lead screws 840a and 840b.

The display unit 20 may include a display panel 10 and a module cover 15 . A lower side of the display unit 20 may be connected to the panel roller 143 , and an upper side of the display unit 20 may be connected to the upper bar 75 . The display unit 20 may be wound or unwound on the panel roller 143 .

A distance from the axis of symmetry ys of the motor assembly 810 to the right slider 860a may be referred to as a distance RD. A distance from the axis of symmetry ys of the motor assembly 810 to the left slider 860b may be referred to as a distance LD. The distance between the right slider 860a and the left slider 860b may be referred to as a distance SD. The distance SD may be the sum of the distance RD and the distance LD. A distance from the base 31 to the upper end of the display unit 20 may be referred to as a distance HD.

Referring to FIG. 57 , when the second arms 912a and 912b are fully lying with respect to the base 31 , the distance SD between the right slider 860a and the left slider 860b may have a minimum value. The distance RD from the symmetry axis ys of the motor assembly 810 to the right slider 860a and the distance LD from the symmetry axis ys of the motor assembly 810 to the left slider 860b may be equal to each other.

When the second arms 912a and 912b are completely lying with respect to the base 31 , the distance HD from the base 31 to the upper end of the display unit 20 may have a minimum value.

When the second arms 912a and 912b are fully lying with respect to the base 31 , the first springs 841a and 841b may contact the sliders 860a and 860b. Also, the second springs 851a and 851b may contact the sliders 860a and 860b. In addition, the pushers 930a and 930b may contact the link brackets 951a and 951b.

When the second arms 912a, 912b are fully lying with respect to the base 31, the compression amount of the first springs 841a, 841b may have a maximum value, and the first springs 841a, 841b The magnitude of the restoring force provided to 860a and 860b) may have a maximum value.

When the second arms 912a, 912b are fully lying with respect to the base 31, the compression amount of the second springs 851a, 851b may have a maximum value, and the second springs 851a, 851b The magnitude of the restoring force provided to 860a and 860b) may have a maximum value.

When the second arms 912a, 912b are fully lying with respect to the base 31 , the compression amount of the springs 940a and 940b may have a maximum value, and the springs 940a and 940b may be applied to the pushers 930a and 930b. The magnitude of the restoring force provided to can have a maximum value.

When the second arms 912a, 912b start to stand with respect to the base 31, the second arms 912a, 912b are connected to the first springs 841a, 841b, the second springs 851a, 851b and the springs ( 940a, 940b) can provide a restoring force to stand up. Accordingly, a load applied to the motor assembly 810 may be reduced.

Referring to FIG. 58 , as the standing of the second arms 912a and 912b with respect to the base 31 progresses, the distance SD between the right slider 860a and the left slider 860b may gradually increase. Even if the distance SD increases, the distance LD and the distance RD may be equal to each other. That is, the right slider 860a and the left slider 860b may be positioned symmetrically with respect to the symmetry axis ys of the motor assembly 810 . In addition, the degree to which the second arms 912a and 912b of the right link 910a stand with respect to the base 31 and the degree to which the second arms 912a and 912b of the left link 910b stand with respect to the base 31 The degree may be mutually equal.

As the standing of the second arms 912a and 912b with respect to the base 31 progresses, the distance HD from the base 31 to the upper end of the display unit 20 may gradually increase. The display unit 20 may be released from the panel roller 143 . Alternatively, the display unit 20 may be deployed from the panel roller 143 .

When the second arms 912a and 912b sufficiently stand with respect to the base 31 , the first springs 841a and 841b may be separated from the sliders 860a and 860b. Also, when the second arms 912a and 912b sufficiently stand with respect to the base 31 , the second springs 851a and 851b may be separated from the sliders 860a and 860b. In addition, when the second arms 912a and 912b sufficiently stand with respect to the base 31 , the pushers 930a and 930b may be separated from the link brackets 951a and 951b.

The first springs 841a and 841b are separated from the sliders 860a and 860b, the second springs 851a and 851b are separated from the sliders 860a and 860b, and the pushers 930a and 930b are separated from the link brackets ( 951a, 951b) and separation may proceed independently of each other. That is, the first springs 841a and 841b are separated from the sliders 860a and 860b, the second springs 851a and 851b are separated from the sliders 860a and 860b, and the pushers 930a and 930b are links. The order of the brackets (951a, 951b) and the separation may be mutually variable.

An angle between the axis xs1 parallel to the base 31 and the second arm 912a may be referred to as theta R. And the angle formed by the axis xs1 parallel to the base 31 and the first arm 911a may be referred to as theta R'. The axes xs1 and the x-axis may be side by side.

When the second arm 912a is fully lying with respect to the base 31 , or while the second arm 912a stands against the base 31 , or when the second arm 912a rests against the base 31 , When standing is completed, theta R and theta R' may be kept the same.

An angle between the axis xs2 parallel to the base 31 and the second arm 912b may be referred to as theta L. And the angle formed by the axis xs2 parallel to the base 31 and the first arm 911b may be referred to as theta L'. The axes xs2 and the x-axis may be side by side.

When the second arm 912b is fully lying with respect to the base 31 , or while the second arm 912b stands with respect to the base 31 , or the second arm 912b rests against the base 31 . In the case where the standing is completed, theta L and theta L' may be kept the same.

The axis xs1 and the axis xs2 may be the same axis as each other.

Referring to FIG. 59 , when the second arms 912a and 912b completely stand with respect to the base 31 , the distance SD between the right slider 860a and the left slider 860b may have a maximum value. Even when the distance SD is the maximum, the distance LD and the distance RD may be equal to each other.

When the second arms 912a and 912b completely stand with respect to the base 31 , the distance HD from the base 31 to the upper end of the display unit 20 may have a maximum value.

FIG. 60 shows a state in which a part of the display panel 10 is wound around the panel roller 143, and FIG. 61 is an enlarged view of an area indicated by a dotted line in FIG.

60 and 61 , the display device according to an embodiment of the present disclosure includes a display panel 10 for displaying an image, a panel cover 15 ′ attached to the rear of the display panel 10, and a panel cover ( 15') having an inextensible flexible sheet 18 attached to the rear surface, and a panel roller on which the display panel 10, the panel cover 15' and the flexible sheet 18 are wound ( 143) may be included.

The front side of the display panel 10 means one side of the display panel 10 on which an image is displayed. Conversely, the rear surface of the display panel 10 means a surface opposite to the front surface of the display panel 10 that cannot be recognized by the user.

The display panel 10 may be wound around the outer circumferential surface of the panel roller 143 or unwound from the panel roller 143 . That is, since the display panel 10 has flexibility, an operation of rolling (or winding) or unrolling (unrolling, or unwinding) can be easily and repeatedly performed. In the present embodiment, since the flexible sheet 18 having inextensible is attached to the rear surface of the panel cover 15', the display panel 10 does not bend forward, but can only be bent backward. . Accordingly, in the present embodiment, the display panel 10 may be wound only in the rear direction of the display panel 100 . That is, the display panel 10 may be wound only in an out-rolling method.

The panel cover 15 ′ supports the rear surface of the display panel 10 and reinforces the rigidity of the display panel 10 . That is, by providing the panel cover 15 ′, the physical durability of the display panel 10 may be improved. The panel cover 15' may include a plurality of segments 15c'. Each segment 15' has a front side facing the display panel 10 and a back side facing it. The front surface of the panel cover 15' may be formed by the front surfaces of the plurality of segments 15c', and the rear surface of the panel cover 15' may be formed by the rear surfaces of the plurality of segments 15c'. have. The plurality of segments 15c ′ may support the display panel 10 to maintain its curvature when the display panel 10 is stacked while being wound around the panel roller 143 .

The plurality of segments 15c ′ have a bar shape extending in the left and right directions LR (refer to FIG. 1 ) of the display panel 10 and are arranged in the vertical direction UD crossing the left and right directions LR. can be The left-right direction LR of the plurality of segments 15c ′ may be the same as or longer than the left-right direction LR length of the display panel 10 . Accordingly, it is possible to protect the side edges of the display panel 10 vulnerable to external impact.

A space between the plurality of segments 15c ′ is required so that the display panel 10 can be wound on the outer circumferential surface of the panel roller 143 in the rear direction of the display panel 10 . Accordingly, each segment 15c ′ may have a cross-section of a trapezoidal shape that becomes narrower from the display panel 10 to the flexible sheet 18 , that is, from the front to the rear. Front edges of the plurality of segments 15c ′ may contact each other, but are not limited thereto.

The plurality of segments 15c ′ may include a material having high strength while being light. The plurality of segments 15c ′ may be formed of, for example, any one of carbon fiber reinforced plastics (CFRP), glass fiber reinforced plastics (GFRP), aluminum, and plastic. The plurality of segments 15c ′ may be formed of carbon fiber reinforced plastics (CFRP). The carbon fibers F included in the plurality of segments 15c ′ may extend in the left-right direction LR. Due to the panel cover 15 ′ including the plurality of segments 15c ′, rigidity in the left and right direction LR of the display panel 10 may be reinforced.

The plurality of segments 15c ′ may be attached to the rear surface of the display panel 10 by an adhesive member 11 . The adhesive member 11 is provided between the rear surface of the display panel 10 and the front surface of the plurality of segments 15c', so that the plurality of segments 15c' can be moved to either side of the display panel ( 10) can be supported. The adhesive member 11 may be a double-sided tape, an adhesive heat conductive tape, or the like.

The inextensible flexible sheet 18 may be attached to the rear surfaces of the plurality of segments 15c ′ by an adhesive member 17 . The adhesive member 17 may be disposed on the rear surfaces of the plurality of segments 15c', respectively. The adhesive member 17 may be a double-sided tape, an adhesive heat conductive tape, or the like.

In a state in which the display panel 10 is unwound from the panel roller 143, the flexible sheet 18 is stretched taut, and in a state in which the display panel 10 is wound around the panel roller 143, portions of the flexible sheet 18 are It may be folded into spaces between the plurality of segments 15c'. When the flexible sheet 18 is laminated while the display panel 10 is wound around the panel roller 143, the display panel 10 is not scratched or damaged by the plurality of segments 15c'. 10) can be protected.

One end of the flexible sheet 18 may be fixed to the panel roller 143 . To this end, an adhesive member may be further provided between one end of the flexible sheet 18 and the panel roller 143 , or a fixing member for fixing one end of the flexible sheet 18 to the panel roller 143 may be further provided. A connecting member connecting one end of the display panel 10 and the panel roller 143 may be further provided. In this case, one end of the flexible sheet 18 may not be fixed to the panel roller 143 or may be fixed to the connecting member. Alternatively, one end of the flexible sheet 18 and one end of the connecting member may be fixed together to the panel roller 143 . Meanwhile, the other end of the flexible sheet 18 may be fixed to the upper bar 75 (see FIG. 62 ). In contrast, the other end of the flexible sheet 18 is not fixed to the top bar 75 and may extend only to the rear surface of the uppermost segment 15c'.

The flexible sheet 18 may be made of any one of a fabric, a polymer mesh, and a decorative film. Accordingly, the flexible sheet 18 may have various colors and patterns, and may provide an aesthetic feeling to the user. In this embodiment, since the flexible sheet 18 having inextensible is attached to the rear surface of the panel cover 15', that is, the rear surfaces of the plurality of segments 15c', the display panel 10 is It does not bend forward, it can only bend backwards. Accordingly, in the present embodiment, the display panel 10 may be wound around the outer circumferential surface of the panel roller 143 only in the rear direction of the display panel 100 . That is, the display panel 10 may be wound only in an out-rolling method.

Since the flexible sheet 18 having inextensible is attached to the rear surface of the panel cover 15', that is, the rear surfaces of the plurality of segments 15c', the display panel 10 is moved by the panel roller 143. The display panel 10 may maintain a flat state without being bent or bent forward in a state released from it. Accordingly, it is possible to prevent scratches on the flexible sheet 18 and the display panel 10 by the link 73 during the process of repeatedly winding or unwinding the display panel 10 .

Referring to FIG. 62 , the spacing between the rear surfaces of the plurality of segments 15c ′ may vary according to positions on the rear surface of the display panel 10 . For example, the first gap d1 between the plurality of segments 15c ′ at the upper portion of the display panel 10 is the second distance d1 between the plurality of segments 15c ′ at the lower portion of the display panel 10 . (d2) may be smaller. The interval between the plurality of segments 15c ′ may be set in consideration of the curvature of the display panel 10 when the display panel 10 is wound around the panel roller 143 . The curvature of the display panel 10 is greatest when the panel roller 143 starts to be wound, and the curvature of the display panel 10 gradually decreases as the display panels 10 are wound and stacked. Accordingly, the second distance d1 between the plurality of segments 15c' at the lower part of the display panel 10 is higher than the first gap d1 between the plurality of segments 15c' at the upper part of the display panel 10 ) is preferably formed larger. Of course, it is also possible to form the same on the entire rear surface of the display panel 10 with the first gap d1 between the plurality of segments 15c ′ under the display panel 10 .

Referring to FIG. 63 , each segment 15c ′ may have a front portion having a constant width and a lower portion having a narrower width from the display panel side toward the flexible sheet. Referring to FIG. 64 , each segment 15c ′ may have a rectangular cross-section.

Each segment 15c ′ reinforces the rigidity of the display panel 10 , and includes a plurality of segments so that the display panel 10 can be wound on the outer circumferential surface of the panel roller 143 in the rear direction of the display panel 100 . 15c'), various cross-sectional shapes may be provided in addition to the above-described cross-sectional shapes.

Although the embodiments described herein have been described with respect to a structure in which the housing 30 is disposed below and the display unit 20 rises for viewing, the configuration of the embodiments described herein is disposed above the housing 30 and , it can also be applied to a structure in which the display unit 20 descends for viewing.

In addition, the configuration according to the embodiment described in this specification may be applied to a fixed terminal such as a digital TV, a desktop computer, digital signage, etc., as well as being applicable to a mobile terminal if it is not a configuration applicable only to a fixed terminal. It will be readily apparent to those skilled in the art. Here, the mobile terminal includes a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a navigation system, a slate PC, and a tablet PC. (tablet PC), ultrabook (ultrabook), wearable device (for example, watch-type terminal (smartwatch), glass-type terminal (smart glass), HMD (head mounted display)) may be included.

Any or other embodiments of the present disclosure described above are not mutually exclusive or distinct. Certain embodiments or other embodiments of the present disclosure described above may be combined or combined with each configuration or function.

For example, it means that configuration A described in a specific embodiment and/or drawing may be combined with configuration B described in another embodiment and/or drawing. That is, even if the combination between the components is not directly described, it means that the combination is possible except for the case where it is described that the combination is impossible.

The above detailed description should not be construed as restrictive in all respects but as illustrative. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are included in the scope of the present invention.

Claims (18)

1. a display panel for displaying an image;

   a panel cover attached to a rear surface of the display panel and including a plurality of segments;

   a flexible sheet attached to the rear surfaces of the plurality of segments spaced apart from each other and having inextensible properties; and

   and a panel roller on which the display panel, the panel cover, and the flexible sheet are wound on an outer circumferential surface.
2. According to claim 1,

   The plurality of segments have a bar shape extending in a left and right direction of the display panel and are arranged in a vertical direction intersecting the left and right directions.
3. According to claim 1,

   Each segment has a cross-section of a trapezoidal shape that is narrower in width from the display panel side toward the flexible sheet.
4. According to claim 1,

   Each segment has a lower portion having a constant width and an upper portion having a narrower width from the display panel side toward the flexible sheet.
5. According to claim 1,

   Each segment is a display device having a rectangular cross section.
6. According to claim 1,

   The plurality of segments is a display device made of carbon fiber reinforced plastic (CFRP).
7. 7. The method of claim 6,

   The carbon fibers included in the plurality of segments extend in the left and right directions of the display panel.
8. According to claim 1,

   In a state in which the display panel is unwound from the panel roller, the flexible sheet is stretched taut,

   With the display panel wound around the panel roller, portions of the flexible sheet are folded into spaces between the plurality of segments.
9. According to claim 1,

   The flexible sheet is a display device made of any one of a fabric, a polymer mesh, and a decorative film.
10. According to claim 1,

    A display device wherein the first spacing between the plurality of segments at the top of the display panel is smaller than the second spacing between the plurality of segments at the bottom of the display panel.
11. According to claim 1,

    One end of the flexible sheet is fixed to the panel roller.
12. a display panel for displaying an image;

    a panel cover attached to a rear surface of the display panel to support the display panel and including the plurality of segments;

    a flexible sheet attached to the rear surface of the panel cover and having inextensible properties; and

    and a panel roller on which the display panel, the panel cover and the flexible sheet are wound on an outer circumferential surface;

    A display device in which the flexible sheet is stretched while the display panel is unwound from the panel roller, and portions of the flexible sheet are folded into spaces between the plurality of segments while the display panel is wound around the panel roller .
13. 13. The method of claim 12,

    The plurality of segments have a bar shape extending in a left and right direction of the display panel and are arranged in a vertical direction intersecting the left and right directions.
14. 13. The method of claim 12,

    Each segment has a cross-section of a trapezoidal shape that is narrower in width from the display panel side toward the flexible sheet.
15. 13. The method of claim 12,

    Each segment has a lower portion having a constant width and an upper portion having a narrower width from the display panel side toward the flexible sheet.
16. 13. The method of claim 12,

    Each segment is a display device having a rectangular cross section.
17. According to claim 1,

    The plurality of segments are made of carbon fiber reinforced plastic (CFRP),

    The carbon fibers included in the plurality of segments extend in the left and right directions of the display panel.
18. 13. The method of claim 12,

    A display device wherein the first spacing between the plurality of segments at the top of the display panel is smaller than the second spacing between the plurality of segments at the bottom of the display panel.

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