Display device

Abstract

This display device comprises: a display module that includes a first region and a second region extending in a first direction from the first region and folded such that a portion thereof is disposed below the first region; an extension module that is disposed between the first region and the second region disposed below the first region; and a plurality of support bars disposed on the rear surface of the second region. The extension module includes: a plurality of fixing plates disposed below the first region; and a guide unit including a first section, at least a portion of which is disposed between the plurality of fixing plates below the first region, and a second section, at least a portion of which is disposed between the rear surface of the second region and the upper surfaces of the plurality of support bars. The center of the plurality of support bars may overlap the second section.

Description

display device

[0001] The present invention relates to a display device, and more particularly, to a display device with improved surface quality.

[0002] Electronic devices such as smartphones, digital cameras, laptops, navigation systems, and smart televisions that typically provide images to users include a display device for displaying the images. The display device generates the images and presents them to the user through a display screen.

[0003] With recent technological advancements in display devices, various forms of display devices are being developed. For example, flexible display devices that can slide or extend beyond the case are being developed. Flexible display devices, which can change shape in various ways, are easy to carry and can enhance user convenience.

[0004] The purpose of the present invention is to provide a display device with improved surface quality.

[0005] A display device according to one embodiment of the present invention comprises a display module including a first region and a second region extending in a first direction from the first region and folded so that a portion thereof is disposed below the first region, an extension module disposed between the second region disposed below the first region and the first region, and a plurality of support bars disposed on a rear surface of the second region, wherein the extension module includes a guide portion including a plurality of fixing plates disposed below the first region, and a first portion disposed below the first region, at least a portion of which is disposed between the plurality of fixing plates, and a second portion disposed at least a portion of which is disposed between the rear surface of the second region and upper surfaces of the plurality of support bars, wherein centers of the plurality of support bars may overlap the second portion.

[0006] According to one embodiment of the present invention, a display device includes a display module including a first region and a second region extending from the first region in a first direction and folded so that a portion thereof is disposed below the first region, an extension module disposed between the first region and the second region, and a plurality of support bars, at least a portion of which is disposed below the second region and a plurality of guide grooves defined on an upper surface facing a back surface of the second region, wherein the extension module includes a guide portion disposed in the guide groove, at least a portion of which has a curved shape, and a plurality of fixing plates disposed on both sides of the guide portion, which are disposed under the first region to be opposite to each other in a second direction intersecting the first direction, and wherein the plurality of support bars can move along the guide portion.

[0007] According to an embodiment of the present invention, the centers of the plurality of support bars can be moved along the guide portion. Accordingly, the centers of the support bars are not deformed, thereby preventing the formation of wrinkles in the display module positioned on the support bars. Consequently, the surface quality of the display device can be improved.

[0008] FIG. 1a is a perspective view of a display device in an inserted state according to one embodiment.

[0009] FIG. 1b is a perspective view illustrating an unfolded state of the display device illustrated in FIG. 1a according to one embodiment.

[0010] FIG. 2A is an exploded perspective view of a display device according to one embodiment.

[0011] FIG. 2b is an exploded perspective view of a display device according to one embodiment.

[0012] FIG. 3 is an exploded perspective view illustrating the display assembly shown in FIG. 2a according to one embodiment.

[0013] FIG. 4 is a cross-sectional view of the display module illustrated in FIG. 3 according to one embodiment.

[0014] FIG. 5 is a cross-sectional view of the display panel illustrated in FIG. 4 according to one embodiment.

[0015] FIG. 6a is a perspective view of the lower plate illustrated in FIG. 3 in an unfolded state according to one embodiment.

[0016] FIG. 6b is a perspective view illustrating one of the support bars illustrated in FIG. 6a according to one embodiment.

[0017] FIG. 7 is an exploded perspective view of the case and expansion module illustrated in FIG. 2a according to one embodiment.

[0018] FIG. 8 is a perspective view of the guide portion illustrated in FIG. 7 according to one embodiment.

[0019] FIG. 9a is a cross-sectional view of a pressurizing portion corresponding to line Ⅰ-Ⅰ' shown in FIG. 7 according to one embodiment.

[0020] Fig. 9b is a drawing for explaining the combination of a pressurizing portion and a guide portion according to one embodiment.

[0021] Fig. 10 is a perspective view illustrating the combination of a rotating part and a pressurizing part (PP) according to one embodiment.

[0022] Fig. 11 is a perspective view illustrating the combination of a guide part and a moving plate according to one embodiment.

[0023] FIG. 12a is a perspective view of the fixed plate illustrated in FIG. 7 according to one embodiment.

[0024] FIG. 12b is a perspective view illustrating the coupling of the first fixing part and the fixing plate and the coupling of the second fixing part and the nut parts according to one embodiment.

[0025] Figure 12c is a perspective view illustrating the combination of a fixed plate and a guide portion according to one embodiment.

[0026] Figure 13a is a perspective view illustrating the movement of support bars according to one embodiment.

[0027] Figure 13b is a perspective view illustrating the movement of support bars according to one embodiment.

[0028] FIG. 13c is a perspective view illustrating the movement of support bars according to one embodiment.

[0029] FIG. 14a is a cross-sectional view corresponding to line Ⅱ-Ⅱ' shown in FIG. 13a according to one embodiment.

[0030] FIG. 14b is a cross-sectional view corresponding to line IV-VI' shown in FIG. 13c according to one embodiment.

[0031] FIG. 15a is a cross-sectional view corresponding to line Ⅲ-Ⅲ' shown in FIG. 13a according to one embodiment.

[0032] FIG. 15b is a cross-sectional view corresponding to the line V-V' shown in FIG. 13c according to one embodiment.

[0033] In this specification, when it is said that a component (or region, layer, portion, etc.) is “on,” “connected to,” or “coupled to” another component, it means that it can be directly disposed / connected / coupled to the other component, or a third component may be disposed between them.

[0034] Identical drawing numbers indicate identical components. Furthermore, in the drawings, the thicknesses, proportions, and dimensions of components are exaggerated for the purpose of effectively illustrating the technical content. "And / or" encompasses any combination of one or more of the associated components.

[0035] While terms such as "first" and "second" may be used to describe various components, these components should not be limited by these terms. These terms are used solely to distinguish one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a "second component," and similarly, a second component may also be referred to as a "first component." Singular expressions include plural expressions unless the context clearly indicates otherwise.

[0036] Additionally, terms such as "below," "lower," "above," and "upper" are used to describe the relationships between components depicted in the drawings. These terms are relative concepts and are explained based on the directions indicated in the drawings.

[0037] It should be understood that terms such as "include" or "have" are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in the specification, but do not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0038] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. Furthermore, terms defined in commonly used dictionaries should be interpreted to have a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an overly idealistic or overly formal sense unless explicitly defined herein.

[0039] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0040]

[0041] Fig. 1a is a perspective view of a display device in an inserted state according to an embodiment of the present invention. Fig. 1b is a perspective view for explaining an unfolded state of the display device illustrated in Fig. 1a.

[0042] Referring to FIG. 1A, a display device (DD) may include a display assembly (PCR) and a case (CS) that accommodates the display assembly (PCR). The display assembly (PCR) may include a display module (DM). The display module (DM) may be exposed to the outside through an opening (OP) defined in the upper portion of the case (CS).

[0043] The case (CS) may include a main case (MCS) and a moving case (MVS). The main case (MCS) and the moving case (MVS) may be coupled to each other to accommodate a display assembly (PCR). The moving cases (MVS) may be coupled to the main case (MCS) to move in a first direction (DR1).

[0044] Hereinafter, a direction intersecting the first direction (DR1) is defined as a second direction (DR2). A direction intersecting substantially perpendicularly with the plane defined by the first and second directions (DR1, DR2) is defined as a third direction (DR3). In this specification, the meaning of "when viewed on a plane" may mean a state viewed from the third direction (DR3).

[0045] As illustrated in Fig. 1a, the area of ​​the display surface of the display assembly (PCR) exposed to the outside can be set to a minimum when the moving case (MVS) is closest to the main case (MCS). This state of the display device (DD) can be defined as an inserted state.

[0046] In one embodiment of the present invention, the area of ​​the display module (DM) exposed to the outside from the case (CS) can be adjusted according to the movement of the moving case (MVS). For example, the moving case (MVS) can be moved in a first direction (DR1) by an external force applied by a user. As illustrated in Fig. 1b, as the moving case (MVS) moves, the area of ​​the display module (DM) exposed to the outside increases, and the user can view an image on a larger screen.

[0047] In one embodiment of the present invention, as illustrated in FIG. 1b, a state of the display device (DD) in which the area of ​​the display assembly (PCR) exposed to the outside is increased compared to the inserted state of FIG. 1a can be defined as an unfolded state.

[0048] Although not shown, a portion of the display module (DM) that is not exposed to the outside, other than the display module (DM) exposed through the opening (OP) in the insertion mode, may be placed within the case (CS).

[0049]

[0050] FIGS. 2A and 2B are exploded perspective views of a display device according to one embodiment.

[0051] By way of example, FIG. 2A is a drawing illustrating a display assembly (PCR), a case (CS), and an expansion module (EMD) in an inserted state according to one embodiment, and FIG. 2B is a drawing illustrating a display assembly (PCR), a case (CS), and an expansion module (EMD) in an unfolded state according to one embodiment.

[0052] Referring to FIGS. 2A and 2B, the main case (MCS) may include a first bottom portion (BP1), a plurality of first sidewall portions (SW1), and a first bulkhead (BW1). The first bottom portion (BP1) may be parallel to a plane defined by a first direction (DR1) and a second direction (DR2).

[0053] The first side wall portions (SW1) may extend in a third direction (DR3) from opposite sides of the first bottom portion (BP1) in the second direction (DR2). The first side wall portions (SW1) may have a plane defined by the first direction (DR1) and the third direction (DR3), and may extend longer in the first direction (DR1) than in the third direction (DR3). The first side wall portions (SW1) facing each other may be symmetrical to each other in the second direction (DR2).

[0054] The first bulkhead (BW1) may extend from one side of the two opposite sides of the main case (MCS) in the first direction (DR1) in the third direction (DR3). The first bulkhead (BW1) may be disposed between the first side wall portions (SW1). The first bulkhead (BW1) may have a plane defined by the second direction (DR2) and the third direction (DR3), and may extend longer in the second direction (DR2) than in the third direction (DR3). One side of the two opposite sides of the main case (MCS) in the first direction (DR1) may be defined as a side disposed further away from the moving case (MVS).

[0055] A moving case (MVS) according to one embodiment may include a second bottom portion (BP2), a plurality of second sidewall portions (SW2), and a second bulkhead (BW2). The second bottom portion (BP2) may have a plane defined by a first direction (DR1) and a second direction (DR2). The second bottom portion (BP2) may be disposed on the first bottom portion (BP1).

[0056] The second side wall portions (SW2) may extend in a third direction (DR3) from opposite sides of the second bottom portion (BP2) in the second direction (DR2). The second side wall portions (SW2) may have a plane defined by the first direction (DR1) and the third direction (DR3), and may extend longer in the first direction (DR1) than in the third direction (DR3). The second side wall portions (SW2) facing each other may be symmetrical to each other in the second direction (DR2).

[0057] The second side wall portions (SW2) can be positioned between the first side wall portions (SW1) facing each other. The second side wall portions (SW2) can be moved in the first direction (DR1) along the inner surfaces of the first side wall portions (SW1) facing each other.

[0058] The second bulkhead (BW2) may extend from one side of the opposite sides of the moving case (MVS) in the first direction (DR1) in the third direction (DR3). The second bulkhead (BW2) may be disposed between the second side wall portions (SW2). The second bulkhead (BW2) may extend longer in the second direction (DR2) than in the third direction (DR3). One side of the opposite sides of the moving case (MVS) in the first direction (DR1) may be defined as the side disposed further away from the main case (MCS).

[0059] A display device (DD) according to one embodiment may include an expansion module (EMD). The expansion module (EMD) may be accommodated within a case (CS). The expansion module (EMD) is coupled to the case (CS) and may be unfolded or folded in a first direction (DR1). The expansion module (EMD) may include driving units (DU), a pressure unit (PP), a roller (ROL), a guide unit (GP), and a plurality of fixing plates (FPL). A detailed description of the expansion module (EMD) will be described later.

[0060] When the expansion module (EMD) according to one embodiment is unfolded, the moving case (MVS) connected to the expansion module (EMD) can move in a first direction (DR1). When the moving case (MVS) moves in the first direction (DR1), the area of ​​the second bottom portion (BP2) overlapping the first bottom portion (BP1) can be varied. In the unfolded state, the area of ​​the second bottom portion (BP2) overlapping the first bottom portion (BP1) can be minimum. In the inserted state, the area of ​​the second bottom portion (BP2) overlapping the first bottom portion (BP1) can be maximum.

[0061]

[0062] FIG. 3 is a perspective view illustrating the display assembly shown in FIG. 2a according to one embodiment.

[0063] By way of example, FIG. 3 is a drawing showing a display assembly (PCR) when a display device (DD, see FIG. 1a) is in an inserted state.

[0064] Referring to FIG. 3, the display assembly (PCR) may include a display module (DM), an upper plate (UTP), and a lower plate (LTP). The display module (DM) may include a first region (DFP) and a second region (DEP) extending from the first region (DFP) in a first direction (DR1).

[0065] The first region (DFP) can be exposed to the outside of the case (CS) of FIG. 2A regardless of the inserted state of FIG. 1A and the unfolded state of FIG. 1B. The first region (DFP) can be parallel to a plane defined by the first direction (DR1) and the second direction (DR2).

[0066] The second region (DEP) extends in the first direction (DR1) from the first region (DFP) and can be folded so that a portion thereof is positioned below the first region (DFP). Depending on the inserted and unfolded states of the display device (DD, FIG. 1a), the area of ​​the second region (DEP) exposed to the outside of the case (CS) can vary.

[0067]

[0068] FIG. 4 is a cross-sectional view of the display module illustrated in FIG. 3 according to one embodiment. FIG. 5 is a cross-sectional view of the display panel illustrated in FIG. 4 according to one embodiment.

[0069] Referring to FIG. 4, the display module (DM) may include a display panel (DP), an input sensing unit (ISP), an anti-reflection layer (RPL), a window (WIN), and a panel protection film (PPF).

[0070] The display panel (DP) may be a flexible display panel. The display panel (DP) according to an embodiment of the present invention may be an emissive display panel, and is not particularly limited thereto. For example, the display panel (DP) may be an organic light-emitting display panel or an inorganic light-emitting display panel. The emissive layer of the organic light-emitting display panel may include an organic light-emitting material. The emissive layer of the inorganic light-emitting display panel may include quantum dots, quantum rods, and the like. Hereinafter, the display panel (DP) is described as an organic light-emitting display panel.

[0071] An input sensing unit (ISP) according to one embodiment may be disposed on a display panel (DP). The input sensing unit (ISP) may include a plurality of sensing units (not shown) for sensing an external input in a capacitive manner. The input sensing unit (ISP) may be manufactured directly on the display panel (DP) during the manufacturing of the display device (DD). However, the present invention is not limited thereto, and in another embodiment, the input sensing unit (ISP) may be manufactured as a separate panel from the display panel (DP) and attached to the display panel (DP) by an adhesive layer.

[0072] According to one embodiment, an anti-reflection layer (RPL) may be disposed on an input sensing unit (ISP). The anti-reflection layer (RPL) may be defined as an external light anti-reflection film. The anti-reflection layer (RPL) may reduce the reflectivity of external light incident from above the display device (DD) toward the display panel (DP).

[0073] When external light directed toward the display panel (DP) is reflected by the display panel (DP) and re-exposed to an external user, the user may perceive the external light as a mirror. To prevent this phenomenon, for example, the anti-reflection layer (RPL) may include a plurality of color filters that display the same color as the pixels of the display panel (DP).

[0074] In one embodiment, color filters can filter external light to the same color as the pixels. In this case, the external light may not be visible to the user. However, the invention is not limited thereto, and in other embodiments, the anti-reflection layer (RPL) may include a phase retarder and / or a polarizer to reduce the reflectivity of external light.

[0075] According to one embodiment, a window (WIN) may be disposed on an anti-reflection layer (RPL). The window (WIN) may protect a display panel (DP), an input sensing unit (ISP), and the anti-reflection layer (RPL) from external scratches and impacts.

[0076] According to one embodiment, a panel protection film (PPF) may be disposed under a display panel (DP). The panel protection film (PPF) may protect the lower portion of the display panel (DP). The panel protection film (PPF) may include a flexible plastic material such as polyethylene terephthalate (PET).

[0077] Referring to FIG. 5, the display panel (DP) may include a substrate (SUB), a circuit element layer (DP-CL) disposed on the substrate (SUB), a display element layer (DP-OLED) disposed on the circuit element layer (DP-CL), and a thin film encapsulation layer (TFE) disposed on the display element layer (DP-OLED).

[0078] According to one embodiment, a substrate (SUB) may include a display area (DA) and a non-display area (NDA) surrounding the display area (DA). The substrate (SUB) may include a flexible plastic material such as polyimide (PI). A display element layer (DP-OLED) may be disposed on the display area (DA).

[0079] According to one embodiment, a plurality of pixels may be arranged on a circuit element layer (DP-CL) and a display element layer (DP-OLED). Each pixel may include transistors arranged on the circuit element layer (DP-CL) and a light-emitting element arranged on the display element layer (DP-OLED) and connected to the transistors. The configuration of the pixels will be described in detail below.

[0080] According to one embodiment, a thin film encapsulation layer (TFE) can be disposed on a circuit element layer (DP-CL) to cover a display element layer (DP-OLED). The thin film encapsulation layer (TFE) can protect pixels from moisture, oxygen, and external foreign substances.

[0081] Referring to FIG. 3, an upper plate (UTP) may be placed on the lower surface of the display module (DM). The upper plate (UTP) may include a metal material such as stainless steel (e.g., SUS 316), but the metal material of the upper plate (UTP) is not limited thereto. Furthermore, the invention is not limited thereto, and in other embodiments, the upper plate (UTP) may include a non-metal material such as plastic.

[0082] The upper plate (UTP) may include a first fixing portion (LF1) and a first extension portion (LE1). The first fixing portion (LF1) may be parallel to a plane defined by the first direction (DR1) and the second direction (DR2). The first fixing portion (LF1) may overlap the first region (DFP).

[0083] The first extension portion (LE1) may be arranged in the first direction (DR1) with the first fixing portion (LF1). The first extension portion (LE1) may extend from the first fixing portion (LF1) in the first direction (DR1), and a portion thereof may be positioned below the first fixing portion (LF1). The first extension portion (LE1) may overlap with the second region (DEP).

[0084] In one embodiment, a plurality of openings (LOP) may be defined in the first extension portion (LE1). The openings (LOP) may overlap the second region (DEP). By defining the openings (LOP), the rigidity of the first extension portion (LE1) may be reduced and the flexibility may be increased. As a result, the first extension portion (LE1) may be easily bent.

[0085]

[0086] Fig. 6a is a perspective view of the lower plate illustrated in Fig. 3 in an unfolded state according to one embodiment. Fig. 6b is a perspective view of one of the support bars illustrated in Fig. 6a according to one embodiment.

[0087] For example, in FIG. 6a, the second fixing member (LF2) and the support bars (MTB) according to one embodiment are illustrated with their lower surfaces facing upward, and in FIG. 6b, the upper surface facing the first extension portion (LE1) of the support bar (MTB) according to one embodiment is illustrated with their upper surfaces facing downward.

[0088] Referring to FIGS. 3 and 6A, the lower plate (LTP) may be positioned beneath the upper plate (UTP). For example, the lower plate (LTP) may be welded to the lower surface of the upper plate (UTP), but the invention is not limited thereto, and various methods may be employed in other embodiments.

[0089] According to one embodiment, a lower plate (LTP) may include a second fixed portion (LF2) and a second extension portion (LE2) arranged in a first direction (DR1) with respect to the second fixed portion (LF2). The second fixed portion (LF2) may be parallel to a plane defined by the first direction (DR1) and the second direction (DR2). The second fixed portion (LF2) may overlap the first fixed portion (LF1) and the first region (DFP).

[0090] According to one embodiment, a receiving opening (VOP) may be defined in the second fixing portion (LF2). The receiving opening (VOP) may be defined to extend in the first direction (DR1) from one side of the opposite sides of the second fixing portion (LF2) toward the other side. One side of the opposite sides of the second fixing portion (LF2) in the first direction (DR1) may be defined as a side facing the support bars (MTB) described below.

[0091] According to one embodiment, the second extension (LE2) may include a plurality of support bars (MTB). When the lower plate (LTP) is unfolded, the support bars (MTB) may extend in the second direction (DR2) and be arranged in the first direction (DR1). When the support bars (MTB) are accommodated within the case (CS, FIG. 2a), some of the support bars (MTB) may be arranged in a curved shape.

[0092] According to one embodiment, the second extension (LE2) may overlap the second region (DEP) and the first extension (LE1). The upper surface of the support bars (MTB) may face the back surface of the second region (DEP) and be attached to the back surface of the first extension (LE1).

[0093] Guide grooves (GGR) may be defined on the upper surface of the support bars (MTB). For convenience of explanation, one of the plurality of support bars (MTB) will be described below in FIG. 6b. The guide groove (GGR) may be defined at the center of the support bar (MTB). The distances from the opposite ends of the guide grooves (GGR) in the second direction (DR2) to the guide groove (GGR) may be the same.

[0094] The guide groove (GGR) may extend in a third direction (DR3) from the upper surface of the support bar (MTB) toward the lower surface. For example, in FIG. 6b, the depth of the guide groove (GGR) is equal to half the thickness of the support bar (MTB), but the depth of the guide groove (GGR) is not limited thereto. In addition, the guide groove (GGR) may have a shape corresponding to a portion of a square, but the shape of the guide groove (GGR) is not limited thereto.

[0095] In one embodiment of the present invention, one guide groove (GGR) is defined in one support bar (MTB), but the number of guide grooves (GGR) defined in one support bar (MTB) is not limited thereto and may be defined as multiple.

[0096]

[0097] Fig. 7 is an exploded perspective view of the case and expansion module illustrated in Fig. 2a according to one embodiment. Fig. 8 is a perspective view of the guide portion illustrated in Fig. 7 according to one embodiment.

[0098] Among the components illustrated in FIGS. 7 and 8, reference will be made to the drawings described above, and descriptions of components identical to the described components will be omitted or simplified.

[0099] Referring to FIGS. 7 and 8, the expansion module (EMD) may include driving units (DU), a pressure unit (PP), a roller (ROL), a guide unit (GP), and a plurality of fixed plates (FPL).

[0100] A portion of the guide portion (GP) may be bent about an axis parallel to the second direction (DR2) to form a curved shape. The guide portion (GP) may include a first portion (PT1), a second portion (PT2), and a third portion (PT3). In one embodiment, the first portion (PT1), the second portion (PT2), and the third portion (PT3) may be formed integrally.

[0101] The first portion (PT1) may include a moving portion (GT) and a plurality of protrusions (PTP) extending from the moving portion (GT). The moving portion (GT) may be parallel to a plane defined by a first direction (DR1) and a second direction (DR2). For example, the moving portion (GT) may have a plurality of short sides extending in the first direction (DR1) and a plurality of long sides extending in the second direction (DR2).

[0102] A plurality of openings (OP) can be defined adjacent to both sides of the moving part (GT) that oppose each other in the second direction (DR2). For example, the openings (OP) can have a shape corresponding to a square, but the shape of the openings (OP) is not limited thereto. As the openings (OP) are defined, the stiffness of the edges on both sides of the moving part (GT) that oppose each other in the second direction (DR2) can be reduced.

[0103] The protrusions (PTP) may extend in the second direction (DR2) from opposite sides of the moving portion (GT) in the second direction (DR2). In practice, the moving portion (GT) and the protrusions (PTP) may be formed integrally. For example, the protrusions (PTP) may have a semicircular shape, but the shape of the protrusions (PTP) is not limited thereto.

[0104] The second portion (PT2) extends from the first portion (PT1) in the first direction (DR1), and a portion of the second portion (PT2) may be bent and positioned below the first portion (PT1). The second portion (PT2) may include a second-first portion (PT2-1), a second-second portion (PT2-2), and a second-third portion (PT2-3).

[0105] The second-first portion (PT2-1) may extend from the first portion (PT1) in the first direction (DR1). The second-first portion (PT2-1) may be parallel to a plane defined by the first direction (DR1) and the second direction (DR2). The second-first portion (PT2-1) may be arranged on the same plane as the first portion (PT1). The width of the second-first portion (PT2-1) in the second direction (DR2) may be the same as the width of the first portion (PT1) in the first direction (DR1).

[0106] The second-second portion (PT2-2) may extend from the second-first portion (PT2-1) and may be bent about an axis parallel to the second direction (DR2). When viewed in the second direction (DR2), the second-second portion (PT2-2) may have a curved shape.

[0107] The second-third portion (PT2-3) may extend from the second-second portion (PT2-2) in a direction opposite to the first direction (DR1). The second-third portion (PT2-3) may be positioned below the second-first portion (PT2-1). The second-third portion (PT2-3) may be parallel to the second-first portion (PT2-1).

[0108] The third portion (PT3) may extend from the second-third portion (PT2-3) in a direction opposite to the first direction (DR1). For example, the third portion (PT3) may have a semicircular shape. A coupling opening (UOP) may be defined at the center of the third portion (PT3).

[0109]

[0110] Fig. 9a is a cross-sectional view of a pressurizing portion corresponding to line Ⅰ-Ⅰ' illustrated in Fig. 7 according to one embodiment. Fig. 9b is a drawing for explaining the combination of a pressurizing portion and a guide portion according to one embodiment.

[0111] Referring to the drawings described above, among the components illustrated in FIGS. 9a and 9b, descriptions of components identical to the described components will be omitted or simplified.

[0112] Referring to FIG. 7, the pressurizing portion (PP) may include a rod portion (CB) and a plurality of third side wall portions (SW3) coupled to the rod portion (CB). The rod portion (CB) may extend in the second direction (DR2).

[0113] The third side wall portions (SW3) can be coupled to opposite sides of the bar portion (CB) in the second direction (DR2). The third side wall portions (SW3) can face each other in the second direction (DR2). The third side wall portions (SW3) can have a plane defined by the first direction (DR1) and the third direction (DR3). The third side wall portions (SW3) can extend longer in the second direction (DR2) than in the third direction (DR3). The third side wall portions (SW3) can have a shape corresponding to the second side wall portions (SW2) of the moving case (MVS).

[0114] Referring to FIGS. 7 and 9a, sliding grooves (SWR) may be defined on the facing inner surfaces of the third side wall portions (SW3). Hereinafter, for convenience of explanation, the inner surface of one of the third side wall portions (SW3) will be described.

[0115] The sliding grooves (SWR) may include a first sliding groove (SWR1), a second sliding groove (SWR2), and a third sliding groove (SWR3). The first sliding groove (SWR1) is defined adjacent to an upper portion of the third side wall portion (SW3) and may extend in a first direction (DR1).

[0116] The second sliding groove (SWR2) may be defined adjacent to the lower portion of the third side wall portion (SW3). The second sliding groove (SWR2) may be defined below the first sliding groove (SWR1). The second sliding groove (SWR2) may extend in the first direction (DR1). The first sliding groove (SWR1) and the second sliding groove (SWR2) may be symmetrical to each other in the third direction (DR3).

[0117] The third sliding groove (SWR3) can connect the first sliding groove (SWR1) and the second sliding groove (SWR2). The third sliding groove (SWR3) can be defined as a curved shape.

[0118] The two opposing sides of the support bars (MTB) in the second direction (DR2) illustrated in Fig. 3 can be arranged in the sliding grooves (SWR). When the display device (DD, see Fig. 1a) is converted to the unfolded or inserted state, the support bars (MTB) can move along the sliding grooves (SWR). The support bars (MTB) moving along the sliding grooves (SWR) will be described in detail in Figs. 15a and 15b.

[0119] As an example, an embodiment in which a sliding groove (SWR) is defined on the inner surface of the third side wall portion (SW3) has been described, but the sliding groove (SWR) of the third side wall portion (SW3) may be omitted.

[0120] Referring to Fig. 7, the roller (ROL) may have a cylindrical shape extending in the second direction (DR2). The roller (ROL) may be coupled to the pressurizing portion (PP). The roller (ROL) may be coupled to the rod portion (CB). The roller (ROL) may be arranged between the third side wall portions (SW3). The roller (ROL) may be coupled to the rod portion (CB) and may rotate around a rotational axis parallel to the second direction (DR2).

[0121] Referring to Fig. 9b, the pressurizing portion (PP) and the roller (ROL) can be arranged between the 2-1 part (PT2-1) and the 2-3 part (PT2-3). The bar portion (CB) and the roller (ROL) can be arranged between the 2-1 part (PT2-1) and the 2-3 part (PT2-3). The 2-2 part (PT2-2) can surround the outer surface of the roller (ROL).

[0122]

[0123] Figure 10 is a perspective view for explaining the combination of the rotating part and the pressurizing part (PP).

[0124] Among the components illustrated in FIG. 10, reference will be made to the drawings described above, and descriptions of components identical to the described components will be omitted or simplified.

[0125] Referring to FIGS. 7 and 10, a plurality of driving units (DU) may be arranged spaced apart from each other in the second direction (DR2). For example, two driving units (DU) are illustrated in FIG. 7, but the number of driving units (DU) is not limited thereto.

[0126] The driving parts (DU) may include rotating parts (RP) and nut parts (NTR). The rotating parts (RP) may include screw parts (SCW) and motor parts (MTR). The screw parts (SCW) may have a rod shape extending in the first direction (DR1). Spiral grooves (GR) may be defined on the outer surface of the screw parts (SCW).

[0127] The motor parts (MTR) can be coupled to one end of the screw parts (SCW) facing the pressurizing part (PP). The motor parts (MTR) can have a cylindrical shape. The motor parts (MTR) can be rotated around a rotation axis parallel to the first direction (DR1) by an external power source. When the motor parts (MTR) rotate around the rotation axis parallel to the first direction (DR1), the screw parts (SCW) coupled to the motor parts (MTR) can be rotated around the rotation axis parallel to the first direction (DR1).

[0128] The screw portions (SCW) can be inserted into the openings (SOP) defined in the nut portions (NTR). Although not shown, projections corresponding to the spiral grooves (GR) can be arranged inside the openings (SOP). Accordingly, when the screw portions (SCW) rotate around a rotation axis parallel to the first direction (DR1), the spiral grooves (GR) and the projections can be engaged with each other. Accordingly, the screw portions (SCW) can be reciprocated in the first direction (DR1). The movement of the screw portions (SCW) will be described in detail in FIGS. 13a to 13c.

[0129] Driving grooves (MGR) may be defined on one side of the rod portion (CB) facing the rotating portions (RP). The driving grooves (MGR) may be arranged in a second direction (DR2). The driving grooves (MGR) may have a shape corresponding to the motor portions (MTR). For example, the driving grooves (MGR) may have a shape corresponding to a portion of a circle. The rotating portions (RP) may be coupled to the rod portion (CB). Each of the rotating portions (RP) may be inserted into and coupled to a corresponding driving groove (MGR) among the driving grooves (MGR).

[0130] The third part (PT3) is provided in multiple numbers, and the multiple third parts (PT3) extend from the second-third part (PT2-3) and can be arranged in the second direction (DR2).

[0131]

[0132] Fig. 11 is a perspective view illustrating the combination of a guide part and a moving plate according to one embodiment.

[0133] Among the components illustrated in Fig. 11, reference will be made to the drawings described above, and descriptions of components identical to the described components will be omitted or simplified.

[0134] Referring to FIGS. 7 and 11, a plurality of fixed openings (GOP) may be defined in the second bottom portion (BP2). The fixed openings (GOP) may be defined adjacent to one of the two opposing sides of the second bottom portion (BP2) in the first direction (DR1), the side facing the main case (MCS). The fixed openings (GOP) may be arranged in the second direction (DR2).

[0135] The guide portion (GP), the pressure portion (PP), and the roller (ROL) can be accommodated in the moving case (MVS). The guide portion (GP) can be arranged on the second bottom portion (BP2). The third portion (PT3) of the guide portion (GP) can overlap the fixed openings (GOP). Although not shown, fastening screws can pass through the third portion (PT3) and be coupled to the fixed openings (GOP). Accordingly, the guide portion (GP) can be fixed to the moving case (MVS).

[0136] The third side wall portions (SW3) of the pressurizing portion (PP) may be positioned between the inner surfaces of the second side wall portions (SW2) facing each other. The third side wall portions (SW3) may be joined to the second side wall portions (SW2). Accordingly, the pressurizing portion (PP) may be fixed to the moving case (MVS).

[0137]

[0138] Fig. 12a is a perspective view of the fixed plate illustrated in Fig. 7 according to one embodiment. Fig. 12b is a perspective view illustrating the coupling of the first fixed part and the fixed plate and the coupling of the second fixed part and the nut parts according to one embodiment. Fig. 12c is a perspective view illustrating the coupling of the fixed plate and the guide part according to one embodiment.

[0139] Referring to the drawings described above, among the components illustrated in FIGS. 12a to 12c, descriptions of components identical to the described components will be omitted or simplified.

[0140] Referring to FIGS. 7 and 12A, the fixed plates (FPL) may be parallel to planes defined by the first direction (DR1) and the second direction (DR2). The fixed plates (FPL) may have long sides extending in the first direction (DR1) and short sides extending in the second direction (DR2).

[0141] Rail grooves (RGR) may be defined on one side of the fixed plates (FPL) facing each other in the second direction (DR2). The rail grooves (RGR) may extend toward both sides of the fixed plates (FPL) opposing each other in the first direction (DR1).

[0142] The fixed grooves (FGR) may be defined on one side of the fixed plates (FPL) facing each other. The fixed grooves (FGR) may extend from the rail grooves (RGR) in a second direction (DR2). The fixed grooves (FGR) and the rail grooves (RGR) may be defined to be continuous in the second direction (DR2). For example, the fixed grooves (FGR) may have a shape corresponding to a portion of a circle.

[0143] The fixed grooves (FGR) may include first fixed grooves (FGR1) and second fixed grooves (FGR2). A pair of the first fixed grooves (FGR1) and the second fixed grooves (FGR2) may be spaced apart from each other in a first direction (DR1). The first fixed grooves (FGR1) may be adjacent to one side adjacent to the first bulkhead (BW1) among the opposite sides of the fixed plates (FPL) that are opposed to each other in the first direction (DR1). The second fixed grooves (FGR2) may be adjacent to the other side among the opposite sides of the fixed plates (FPL) that are opposed to each other in the first direction (DR1). The first fixed grooves (FGR1) and the second fixed grooves (FGR2) may be spaced apart from each other in the first direction (DR1).

[0144] Referring to Fig. 12b, for convenience of explanation, the back surface of the first fixing part (LF1), the back surface of the second fixing part (LF2), and the back surface of the fixing plate (FPL) are illustrated facing upward. The fixing plates (FPL) may be positioned on the back surface of the first fixing part (LF1). When viewed in plan, the fixing plates (FPL) may be positioned within a receiving opening (VOP, see Fig. 6) defined in the second fixing part (LF2).

[0145] When viewed from a plan view, the fixing plate (FPL) can be positioned on the back surface of the first fixing part (LF1) exposed to the outside from the second fixing part (LF2) by the receiving opening (VOP). The upper surface of the fixing plate (FPL) can be attached to the back surface of the first fixing part (LF1). Accordingly, the position of the fixing plates (FPL) can be fixed regardless of the unfolded state and inserted state of the display device (DD, see FIGS. 1A and 1B).

[0146] The nut part (NTR) can be positioned on the back surface of the second fixing part (LF2). The nut part (NTR) can be fixed on the back surface of the second fixing part (LF2). Accordingly, the position of the nut part (NTR) can be fixed regardless of the unfolded state and the inserted state of the display device (DD, see FIGS. 1A and 1B).

[0147] Referring to Fig. 12c, for convenience of explanation, the first fixing part (LF1) and the second fixing part (LF2) of Fig. 12b are omitted, and only the fixing plates (FPL) arranged on the back surface of the first fixing part (LF1) and the nut parts (NTR) arranged on the back surface of the second fixing part (LF2) are illustrated. In addition, Fig. 12c is a drawing illustrating the fixing plates (FPL) and the guide part (GP) when in an inserted state.

[0148] When the first and second fixing parts (LF1, LF2) of FIG. 12b are placed on the guide part (GP), the fixing plates (FPL) can be coupled to the guide part (GP). The protrusions (PTP) can be placed in the first fixing grooves (FGR1). Accordingly, in the inserted state of the display device (DD, see FIG. 1a), no play may occur between the fixing plates (FPL) and the guide part (GP).

[0149] The nut portions (NTR) can be coupled to the screw portions (SCW). The screw portions (SCW) can be inserted into the openings (SOP) defined in the nut portions (NTR). Although not shown, the spiral grooves (GR) defined on the outer surface of the screw portions (SCW) can engage with the protrusions arranged within the openings (SOP).

[0150]

[0151] Figures 13a to 13c are perspective views illustrating the movement of support bars according to one embodiment of the present invention. Figure 14a is a cross-sectional view corresponding to the line II-II' illustrated in Figure 13a according to one embodiment of the present invention. Figure 14b is a cross-sectional view corresponding to the line IV-IV' illustrated in Figure 13c.

[0152] For example, FIGS. 13a and 14a are drawings showing the expansion module (EMD), the case (CS), and the support bars (MTB) when in the inserted state, and FIGS. 13c and 14b are drawings showing the expansion module (EMD), the case (CS), and the support bars (MTB) when in the unfolded state.

[0153] For convenience of explanation, the display module (DM), the upper plate (UTP), the second fixing part (LF2), and some of the support bars (MTB) are omitted in FIGS. 13a to 14b. In addition, other components except for the support bars (MTB), the guide part (GP), and the roller (ROL) are omitted in FIGS. 14a and 14b.

[0154] Among the components illustrated in FIGS. 13a to 14b, reference will be made to the drawings described above, and descriptions of components identical to the described components will be omitted or simplified.

[0155] Referring to FIGS. 13A and 14A, the support bars (MTB) can be connected to the guide portion (GP) and the moving case (MVS). The guide portion (GP) can be arranged in the guide grooves (GGR). Some of the support bars (MTB) can be arranged on the back surface of the 2-1 part (PT2-1). Other support bars (MTB) can be arranged in a curved shape between the back surface of the 2-2 part (PT2-2) and the outer surface of the roller (ROL). The remaining support bars (MTB) can be arranged on the upper surface of the 2-3 part (PT2-3) facing the back surface of the 2-1 part (PT2-1).

[0156] When the expansion module (EMD) is inserted, the number of support bars (MTB) arranged on the upper surface of the 2-3 part (PT2-3) may be greater than the number of support bars (MTB) arranged on the back surface of the 2-1 part (PT2-1).

[0157] Referring to Fig. 13b, the motor parts (MT) can rotate around a rotation axis parallel to the first direction (DR1). When the motor parts (MT) rotate, the screw parts (SCW) connected to the motor parts (MT) can rotate around a rotation axis parallel to the first direction (DR1). When the screw parts (SCW) rotate, the protrusions (not shown) arranged inside the spiral grooves (GR) and the nut parts (NTR) can engage with each other. Accordingly, the screw parts (SCW) and the motor parts (MT) can move in the first direction (DR1) with respect to the nut parts (NTR).

[0158] When the screw parts (SCW) and motor parts (MT) move in the first direction (DR1), the pressurizing part (PP) of Fig. 11 coupled to the motor parts (MT) can move in the first direction (DR1). The roller (R0L) connected to the pressurizing part (PP) can move in the first direction (DR1).

[0159] When the pressurizing portion (PP) and the roller (ROL) move in the first direction (DR1), the moving case (MVS) connected to the pressurizing portion (PP), the guide portion (GP) coupled to the moving case (MVS), and the support bars (MTB) arranged between the guide portion (GP) and the roller (ROL) can move in the first direction (DR1).

[0160] As the moving case (MVS) moves in the first direction (DR1), the case (CS) can expand in the first direction (DR1). The overlapping area between the moving case (MVS) and the main case (MCS) can be reduced.

[0161] When the guide part (GP) coupled to the moving case (MVS) moves in the first direction (DR1), the two sides and the protrusions (PTP) of the second-first part (PT2-1) that oppose each other in the second direction (DR2) can move in the first direction (DR1) along the rail grooves (RGR) of FIG. 12a.

[0162] As the openings (OP) are defined in the first part (PT1), the rigidity of the first part (PT1) is reduced, so that the two opposite sides of the first part (PT1) in the second direction (DR2) can be bent. Accordingly, the gap between the protrusions (PTP) in the second direction (DR2) is reduced, and the protrusions (PTP) can be separated from the first fixing grooves (FGR1) and arranged in the rail grooves (RGR).

[0163] The support bars (MTB) arranged on the upper surface of the 2-3 part (PT2-3) of Fig. 14a can move along the upper surface of the 2-3 part (PT2-3) as the guide part (GP) and the roller (R0L) move. The support bars (MTB) arranged on the back surface of the 2-2 part (PT2-2) and the outer surface of the roller (ROL) can move upwards of the pressure part (PP, see Fig. 14a) along the back surface of the 2-2 part (PT2-2) and the outer surface of the roller (ROL). The support bars (MTB) moved upwards can move along the back surface of the 2-1 part (PT2-1). The number of support bars (MTB) arranged on the upper surface of the pressure part (PP) can increase.

[0164] As the center of the support bars (MTB) moves along the back surface (PT2-1) of the 2-1 section, the back surface (PT2-2) of the 2-2 section, and the upper surface of the 2-3 section (PT2-3), the center of the support bars (MTB) may not be bent. Accordingly, wrinkles may not occur in the portion of the display module (DM, see Fig. 3) that overlaps the center of the support bars (MTB). Accordingly, the surface quality of the display device (DD, see Fig. 1a) may be improved.

[0165] Referring to FIGS. 13c and 14b, when the expansion module (EMD) is in the unfolded state, the case (CS) can be expanded to its maximum extent. The overlapping area between the moving case (MVS) and the main case (MVS) can be minimized.

[0166] When the expansion module (EMD) is in the unfolded state, the protrusions (PTP) of the guide portion (GP) can be positioned within the second fixing grooves (FGR2). Accordingly, when the display device (DD, see FIG. 1b) is in the expanded state, no play may occur between the guide portion (GP) and the fixing plate (FPL).

[0167] When the expansion module (EMD) is in the unfolded state, the number of support bars (MTB) arranged on the upper side of the pressurized portion (PP) can be increased. The number of support bars (MTB) arranged on the back surface of the 2-1 part (PT2-1) can be greater than the number of support bars (MTB) arranged on the upper surface of the 2-3 part (PT2-3).

[0168] Although not shown, as the number of support bars (MTB) arranged on the upper portion of the pressurized portion (PP) increases, the area of ​​the upper plate (UTP) exposed to the outside from the case (CS) and the area of ​​the display module (DM) may increase.

[0169] Hereinafter, the process of changing the display device (DD, see Fig. 1b) from the unfolded state to the inserted state is performed in the reverse order of the process described in Figs. 13a to 13c, and thus will be omitted.

[0170]

[0171] Fig. 15a is a cross-sectional view corresponding to line Ⅲ-Ⅲ' shown in Fig. 13a. Fig. 15b is a cross-sectional view corresponding to line Ⅳ-Ⅳ' shown in Fig. 13c.

[0172] Referring to the drawings described above, among the components illustrated in FIGS. 15a and 15b, descriptions of components identical to the described components will be omitted or simplified.

[0173] Referring to FIGS. 13A and 15A, both sides of the support bars (MTB) opposing each other in the second direction (DR2) may be coupled to third side wall portions (SW3). Both sides of the support bars (MTB) opposing each other in the second direction (DR2) may be coupled to sliding grooves (SWR). Hereinafter, for convenience of explanation, one of the third side wall portions (SW3) will be described.

[0174] When the expansion module (EMD) is inserted, the number of support bars (MTB) arranged in the first sliding groove (SWR1) may be smaller than the number of support bars (MTB) arranged in the second sliding groove (SWR2). The support bars (MTB) arranged in the third sliding groove (SWR3) may be arranged on the outer surface of the roller (ROL).

[0175] Referring to FIGS. 13C, 15A, and 15B, when the expansion module (EMD) changes from an inserted state to an unfolded state, the support bars (MTB) can be moved along the second sliding groove (SWR2), pass through the third sliding groove (SWR3), and move toward the first sliding groove (SWR1). The support bars (MTB) can be moved along the outer surface of the roller (ROL) toward the first sliding groove (SWR1). The number of support bars (MTB) arranged in the first sliding groove (SWR1) can be increased. The number of support bars (MTB) arranged in the first sliding groove (SWR1) can be smaller than the number of support bars (MTB) arranged in the second sliding groove (SWR2).

[0176] Accordingly, the area of ​​the display module (DM, see Fig. 1b) exposed to the outside from the case (CS, see Fig. 1b) can be increased.

[0177]

[0178] Although the present invention has been described with reference to exemplary embodiments, it will be understood by those skilled in the art that various modifications and changes can be made to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. Furthermore, the embodiments disclosed herein are not intended to limit the technical spirit of the present invention, and all technical ideas falling within the scope of the following claims and their equivalents should be construed as being included within the scope of the present invention. Furthermore, the embodiments or portions of the embodiments may be combined in whole or in part without departing from the scope of the present invention.

[0179]

[0180] As the centers of the plurality of support bars move along the guide portion, the centers of the support bars are not deformed, so that a display device with improved surface quality of a display module placed on the support bars can be provided to a user, and therefore the present invention has high industrial applicability.

Claims

1. A display module including a first region and a second region extending in a first direction from the first region and folded so that a portion thereof is disposed below the first region; An expansion module disposed between the first region and a portion of the second region disposed below the first region; and It comprises a plurality of support bars arranged on the back surface of the second region, The above expansion module, a plurality of fixed plates arranged below the first region; and A guide portion including a first portion, at least a portion of which is disposed between the plurality of fixed plates under the first region, and a second portion, at least a portion of which is disposed between the back surface of the second region and the upper surface of the plurality of support bars, A display device in which the center of the plurality of support bars overlaps the second part.

2. In paragraph 1, A plurality of rail grooves are defined on one side of a plurality of fixed plates facing each other in a second direction intersecting the first direction, The above first part is a display device that moves in the first direction along the plurality of rail grooves.

3. In paragraph 2, The above first part is, A moving part having a plane defined by the first direction and the second direction; It comprises a plurality of protrusions extending in the second direction from both sides of the moving part arranged to oppose each other in the second direction, A plurality of fixing grooves extending in the second direction from the plurality of rail grooves are defined in the plurality of fixing plates, A display device in which the plurality of protrusions are arranged in the plurality of fixing grooves when the expansion module is in an expanded state extended in the first direction or an inserted state reduced in the first direction.

4. In paragraph 3, A display device having a plurality of openings defined in the moving part adjacent to the plurality of protrusions.

5. In paragraph 1, A plurality of guide grooves are defined on the upper surface of the support bar facing the back surface of the second part, The second part is a display device arranged within the guide groove.

6. In paragraph 1, The second part above is, A second-first part arranged on the same plane as the first part; A 2-2 portion extending from the 2-1 portion and having a curved shape; and A display device including a 2-3 section positioned below the 2-1 section.

7. In paragraph 6, A main case accommodating the display module and the expansion module; and Further comprising a moving case that moves in the first direction with respect to the main case; The above moving case is, a bottom portion defined by the first direction and a second direction intersecting the first direction; and A display device comprising a plurality of side wall portions arranged on opposite sides of the bottom portion in the second direction.

8. In paragraph 7, A plurality of sliding grooves having at least a portion of a curved shape are defined on the inner surface of the plurality of side wall portions facing each other, A display device in which both sides of the support bar opposing each other in the second direction are arranged within the plurality of sliding grooves.

9. In paragraph 7, The above guide part, Further comprising a third portion extending in the first direction from the second-third portion, The third part is a display device that is connected to the bottom part.

10. In paragraph 1, Further comprising an upper plate disposed between the first region and the first part, The above fixed plate is a display device placed on the lower surface of the upper plate.

11. A display module including a first region and a second region extending in a first direction from the first region and folded so that a portion thereof is disposed below the first region; An expansion module disposed between the first region and a portion of the second region disposed below the first region; and At least some of the support bars are positioned below the second region, and a plurality of guide grooves are defined on the upper surface facing the back surface of the second region, The above expansion module, A guide portion arranged in the above guide groove and having at least a portion having a curved shape; and Below the first region, a plurality of fixed plates are disposed on both sides of the guide portion in a second direction intersecting with the first direction, The above plurality of support bars are a display device that moves along the guide section.

12. In paragraph 11, A plurality of rail grooves extending in a first direction are defined on one side facing each other of the plurality of fixed plates, A display device in which, when the guide part moves along the plurality of rail grooves, the plurality of support bars move along the curve.

13. In paragraph 12, The above guide part, A first part disposed below the first region and including a moving part disposed between the plurality of fixed plates and a plurality of protrusions extending from the moving part in the second direction; and A display device comprising a second portion disposed below the second region, extending in the first direction from the first portion, and having at least a portion of the second portion having the curve.

14. In paragraph 13, A first groove is defined adjacent to one side of the fixed plate in the first direction and extending from the rail groove in the second direction, A second groove is defined adjacent to the first direction on the other side of the fixed plate and extending from the rail groove in the second direction, A display device in which the expansion module expands in the first direction when the plurality of protrusions move from the first groove to the second groove.

15. In paragraph 14, A display device having a plurality of openings defined on both sides of the first portion opposite to each other in the second direction.

16. In paragraph 13, A main case accommodating the display module and the expansion module; and Further comprising a moving case that moves in the first direction with respect to the main case; The above moving case has a bottom part; and a second direction opposite to each other A display device comprising a plurality of side wall portions extending in a third direction intersecting a plane defined by the first direction and the second direction from both sides of the bottom portion that are opposed to each other in the second direction.

17. In paragraph 16, A plurality of sliding grooves having at least a portion of a curved shape are defined on the inner surface of the plurality of side wall portions facing each other, A display device in which both sides of the support bar opposing each other in the second direction are arranged within the plurality of sliding grooves.

18. In paragraph 17, The above guide part, Further comprising a third part extending from the second part in the first direction and positioned below the first part, The third part is a display device that is connected to the bottom part.

19. In paragraph 16, The above expansion module, A pressurizing member arranged between the plurality of side wall members; A driving unit coupled to one side of the pressurized portion that opposes each other in the first direction, the side defined as the side facing the main case; and A display device further comprising a roller coupled to the other side of the pressurizing portion.

20. In paragraph 11, The above plurality of guide grooves are display devices defined at the center of the above plurality of support bars.

Images