Display device

Abstract

A display device includes: a display module; a support plate disposed under the display module and including a plate and a plurality of support bars arranged together with the plate in a first direction and extending in a second direction crossing the first direction; the main shell is arranged below the supporting plate; a moving housing disposed between the support plate and the main housing and moving in the first direction with respect to the main housing; and an elastic member disposed on an upper surface of the moving housing and coupled to the support plate. The elastic member is stretched and applies an elastic force to the support plate in a state where an overlapping area of the moving housing and the main housing is minimum.

Description

[0001] This application claims priority to and all benefits derived from Korean Patent Application No. 10-2023-0113765, filed on August 29, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The disclosure herein relates to a display device. Background Art

[0003] Electronic devices that provide images to users, such as smart phones, digital cameras, laptop computers, navigation systems, and smart TVs, include display devices for displaying images. The display devices generate images and provide the images to users through display screens.

[0004] Due to recent technological developments in display devices, various types of display devices are being developed. For example, various display devices that can be expanded or contracted or deformed into a curved form are being developed. The display device is easy to carry and can improve user convenience. Summary of the invention

[0005] The present disclosure provides a display device capable of preventing deformation of a support rod supporting a display module.

[0006] An embodiment of the inventive concept provides a display device, comprising: a display module; a support plate disposed under the display module and comprising a plate and a plurality of support rods, the plurality of support rods being arranged together with the plate in a first direction and extending in a second direction intersecting the first direction; a main housing disposed under the support plate; a moving housing disposed between the support plate and the main housing and configured to move relative to the main housing in the first direction; and an elastic member disposed on an upper surface of the moving housing and coupled to the support plate. In a state where an overlapping area of ​​the moving housing and the main housing is minimum, the elastic member is stretched and applies an elastic force to the support plate.

[0007] In another embodiment of the present invention, a display device includes: a display module; a support plate disposed below the display module and having a plurality of guide grooves defined therein; a main housing disposed below the support plate; a mobile housing disposed between the main housing and the support plate and slidably coupled to the main housing; and a plurality of elastic members disposed on an upper surface of the mobile housing and coupled to the plurality of guide grooves. In a state where the mobile housing moves relative to the main housing in a first direction, portions of the plurality of elastic members coupled to the plurality of guide grooves become closer to each other or farther away from each other, and in a state where the distance between the portions of the plurality of elastic members is the largest, the plurality of elastic members are stretched and apply elastic force to the support plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The accompanying drawings are included to provide a further understanding of the inventive concept and are incorporated in and constitute a part of this specification. The accompanying drawings illustrate embodiments of the inventive concept and together with the description serve to explain the principles of the inventive concept. In the drawings:

[0009] Figure 1A A perspective view of an embodiment of a display device according to the present invention;

[0010] Figure 1B As an example Figure 1A FIG. 1 is a diagram of an extended mode of a display device as illustrated in FIG. 1 ;

[0011] Figure 2 for Figure 1A An exploded perspective view of the display device illustrated in FIG.

[0012] Figure 3 As an example Figure 2 An exploded perspective view of the module set illustrated in FIG.

[0013] Figure 4 for Figure 3 A cross-sectional view of the display module illustrated in FIG.

[0014] Figure 5 for Figure 4 A cross-sectional view of a display panel as illustrated in FIG.

[0015] Figure 6 for Figure 5 A plan view of the display panel illustrated in FIG.

[0016] Figure 7 for Figure 3 A perspective view of the support plate illustrated in FIG.

[0017] Figure 8 for Figure 2 An exploded perspective view of the expansion module illustrated in FIG.

[0018] Fig. 9 for Figure 8 FIG. 1 is a diagram of an elastic member as illustrated in FIG. 1 ;

[0019] Fig.10 for Figure 8 A cross-sectional view of the pressing portion illustrated in FIG.

[0020] Fig.11 for Figure 8 A diagram of a driving portion and a pressing portion illustrated in FIG.

[0021] Fig.12 A diagram illustrating the connection between the driving part and the support plate;

[0022] FIG. 13A to FIG. 13F A diagram illustrating an expanded mode or a reduced mode of a display device;

[0023] Fig.14A and Fig. 14B A diagram illustrating a support rod according to a comparative example;

[0024] Fig. 14C and Fig.14D A diagram illustrating an embodiment of a support rod according to the present invention; and

[0025] Fig.15A and Fig. 15B is a diagram illustrating another embodiment of an elastic member according to the inventive concept. DETAILED DESCRIPTION

[0026] The advantages and features of the inventive concept and how to achieve them will become clear by reference to the embodiments described in detail below and the accompanying drawings. However, the inventive concept can be implemented in different forms and should not be construed as being limited to the embodiments set forth herein. Instead, these embodiments are provided so that the disclosure will be thorough and complete and will fully convey the scope of the inventive concept to those skilled in the art, and the scope of the inventive concept is limited here only by the claims. The same reference numerals or symbols refer to the same elements throughout the specification.

[0027] It will be understood that when an element or layer is referred to as being "on," "connected to," or "coupled to" another element or layer, it may be directly on, connected to, or coupled to the other element or layer, or there may be intervening elements or layers. Conversely, when an element is referred to as being "directly on," "directly connected to," or "directly coupled to" another element or layer, there are no intervening elements or layers. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0028] For ease of description, spatially relative terms such as "below," "beneath," "below," "above," "upper," etc. may be used herein to describe the relationship of one element or feature to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.

[0029] It will be understood that although the terms "first", "second", etc. may be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Therefore, without departing from the teachings of the present inventive concept, the first element, component, region, layer or section discussed below may be referred to as a second element, component, region, layer or section.

[0030] The embodiments described in this specification are described with reference to plan views and cross-sectional views that are ideal schematic views of the inventive concept. Therefore, the form of the drawings may be modified according to manufacturing techniques and / or tolerances. Therefore, the inventive concept is not limited to the specific forms illustrated, but includes variations in form resulting from manufacturing processes. Therefore, the regions illustrated in the figures have schematic properties, and the shapes of the regions in the figures are intended to illustrate specific shapes of elements, but are not intended to limit the scope of the inventive concept.

[0031] Hereinafter, embodiments of the inventive concept will be described in more detail with reference to the accompanying drawings.

[0032] Figure 1A FIG. 1 is a perspective view of an embodiment of a display device according to the inventive concept. Figure 1B As an example Figure 1A FIG. 4 is a diagram of an extended mode of a display device illustrated in FIG.

[0033] refer to Figure 1A , the display device DD may include a module set PCR and an expansion module EMD accommodating the module set PCR. The module set PCR may include a display module DM. The display module DM may be exposed to the outside through an opening OP defined in an upper portion of the expansion module EMD.

[0034] The expansion module EMD may include a main housing MCS and a mobile housing MVS. The mobile housing MVS may be coupled to the main housing MCS to be movable in a first direction DR1.

[0035] Hereinafter, a direction crossing the first direction DR1 is defined as a second direction DR2. A direction substantially perpendicular to a plane defined by the first direction DR1 and the second direction DR2 is defined as a third direction DR3. In this specification, "in a plan view" may refer to a state when viewed from the third direction DR3.

[0036] Will refer to the following Figure 8 The exploded perspective view of the expansion module EMD illustrated in FIG. 1 describes in detail the more specific composition of the main shell MCS and the mobile shell MVS.

[0037] refer to Figure 1A and Figure 1B , the mobile housing MVS can move along the first direction DR1 to move away from or approach the main housing MCS. The overlapping area of ​​the main housing MCS and the mobile housing MVS can be changed. When the mobile housing MVS moves in the first direction DR1, the area to be exposed of the display module DM can be controlled according to the movement of the mobile housing MVS. According to the movement of the mobile housing MVS, a basic mode (e.g., a reduced mode) and an extended mode of the display device DD can be realized.

[0038] The display module DM may be a flexible display module, and may be provided with a support plate (such as the following) disposed below the display module DM. Figure 3 The display module DM and the support plate may be accommodated in the main housing MCS and the mobile housing MVS. The display module DM and the support plate may be connected to the mobile housing MVS, and when the mobile housing MVS moves from the main housing MCS along the first direction DR1, the display module DM and the support plate may also move in the first direction DR1. In one embodiment, the main housing MCS may be disposed below the support plate, and the mobile housing MVS may be disposed between the support plate and the main housing MCS.

[0039] Although not illustrated in the drawings, a portion of the display module DM that is not exposed to the outside may be provided in the mobile housing MVS, except for the portion of the display module DM exposed through the opening OP.

[0040] refer to Figure 1B , the mobile housing MVS can move in the first direction DR1 to move away from the main housing MCS. The display module DM disposed on the support plate moves in the first direction DR1 together with the support plate as the mobile housing MVS moves, and as a result, the exposed surface of the display module DM can be expanded. As the exposed surface of the display module DM is expanded, the user can view images through a larger screen. The state of the display device DD in which the exposed surface of the display module DM is expanded can be defined as an expanded mode.

[0041] refer to Figure 1A , the mobile housing MVS may move in the opposite direction of the first direction DR1 to approach the main housing MCS. When the mobile housing MVS moves toward the main housing MCS to its maximum extent, the exposed surface of the display module DM may be set to a minimum value. This state of the display device DD may be defined as a zoom-out mode.

[0042] Figure 2 for Figure 1AAn exploded perspective view of the display device illustrated in FIG. Figure 3 for Figure 2 An exploded perspective view of the module set illustrated in . Figure 4 for Figure 3 001 is a cross-sectional view of a display module illustrated in FIG. Figure 5 for Figure 4 A cross-sectional view of a display panel illustrated in FIG. Figure 6 for Figure 5 A plan view of the display panel illustrated in FIG. Figure 7 for Figure 3 A perspective view of the support plate illustrated in FIG.

[0043] Figure 2 The module set PCR and the extended module EMD are instantiated in reduced mode.

[0044] Figure 7 The support plate MTP is illustrated in an unfolded state.

[0045] refer to Figure 2 and Figure 3 The display device DD may include an expansion module EMD and a module set PCR. The expansion module EMD may include a main housing MCS, a mobile housing MVS, a plurality of elastic members EPT, a roller unit RU, a pressing unit PUL, and a plurality of driving units DPT. Figures 8 to 12 The specific compositions of the main housing MCS, the mobile housing MVS, the plurality of elastic members EPT, the roller portion RU, the pressing portion PUL, and the plurality of driving portions DPT are described in detail.

[0046] As the mobile housing MVS moves in the first direction DR1 relative to the main housing MCS, the expansion module EMD may expand or contract in the first direction DR1.

[0047] The extension module EMD can accommodate the module set PCR. A part of the module set PCR can be accommodated in the mobile shell MVS and can therefore move in the first direction DR1 relative to the main shell MCS. The area of ​​the exposed surface of the module set PCR can be controlled according to the movement of the mobile shell MVS. In the reduced mode, the module set PCR can be accommodated in the mobile shell MVS. In the extended mode, the module set PCR can be extended from the mobile shell MVS.

[0048] The module set PCR may include a display module DM, an upper panel LTP, and a support panel MTP. When the display module DM is unfolded, the display module DM may have a quadrilateral shape in a plan view, such as a rectangular shape including long sides extending in a first direction DR1 and short sides extending in a second direction DR2.

[0049] refer to Figure 3 The display module DM can be retracted into the mobile housing MVS (refer to Figure 2 ) in a reduced mode, or in an extended mode in which the display module DM is extended from the mobile housing MVS. The display module DM may include a fixed area DFP and an extended area DEP. Figure 1A and Figure 1B ) is in the reduction mode, a portion of the display module DM flatly exposed to the outside may be defined as the fixed region DFP, and a portion of the display module DM not flatly exposed to the outside may be defined as the expansion region DEP.

[0050] When the display device DD (reference Figure 1A and Figure 1B ) is in the expansion mode, a portion of the expansion area DEP may be flatly exposed to the outside. The expansion area DEP may be expanded from the fixed area DFP in the first direction DR1. The expansion area DEP and the fixed area DFP may be arranged in the first direction DR1.

[0051] refer to Figure 4 , the display module DM may include a display panel DP, an input sensing part ISP, an anti-reflection layer RPL, a window WIN, a panel protection film PPF, and first to third adhesive layers AL1 to AL3.

[0052] The display panel DP may be a flexible display panel. The display panel DP in an embodiment of the present invention may be an emissive display panel, but is not particularly limited thereto. In an embodiment, the display panel DP may be, for example, an organic light-emitting display panel or an inorganic light-emitting display panel. The light-emitting layer of the organic light-emitting display panel may include an organic light-emitting material. The light-emitting layer of the inorganic light-emitting display panel may include quantum dots, quantum rods, etc. Hereinafter, the display panel DP is described as an organic light-emitting display panel.

[0053] The input sensing part ISP may be disposed on the display panel DP. The input sensing part ISP may include a plurality of sensing parts (not shown) for detecting external input in a capacitive manner. In manufacturing the display device DD, the input sensing part ISP may be directly manufactured on the display panel DP. However, the inventive concept is not limited thereto, and the input sensing part ISP may be manufactured separately from the display panel DP and bonded to the display panel DP through an adhesive layer.

[0054] The anti-reflection layer RPL may be disposed on the input sensing part ISP. The anti-reflection layer RPL may be defined as an external light anti-reflection film. The anti-reflection layer RPL may reduce reflectivity of external light incident from above the display device DD toward the display panel DP.

[0055] When external light directed toward the display panel DP is reflected on the display panel DP to provide a user back to the outside, the user can see the external light like in a mirror. To prevent this phenomenon, the anti-reflection layer RPL may include, for example, a plurality of color filters displaying the same color as the pixels of the display panel DP.

[0056] The color filter may filter the external light into the same color as the pixel. In this case, the user may not see the external light. However, the inventive concept is not limited thereto, and the anti-reflection layer RPL may include a retarder and / or a polarizer to reduce the reflectivity of the external light.

[0057] The window WIN may be disposed on the anti-reflection layer RPL. The window WIN may protect the display panel DP, the input sensing part ISP, and the anti-reflection layer RPL from external scratches and impacts.

[0058] The panel protection film PPF may be disposed under the display panel DP. The panel protection film PPF may protect a lower portion of the display panel DP. The panel protection film PPF may include a flexible plastic material such as polyethylene terephthalate ("PET").

[0059] The first adhesive layer AL1 may be disposed between the display panel DP and the panel protection film PPF, and the display panel DP and the panel protection film PPF may be bonded to each other through the first adhesive layer AL1. The second adhesive layer AL2 may be disposed between the anti-reflection layer RPL and the input sensing part ISP, and the anti-reflection layer RPL and the input sensing part ISP may be bonded to each other through the second adhesive layer AL2. The third adhesive layer AL3 may be disposed between the window WIN and the anti-reflection layer RPL, and the window WIN and the anti-reflection layer RPL may be bonded to each other through the third adhesive layer AL3.

[0060] refer to Figure 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.

[0061] The substrate SUB may include a display area DA and a non-display area NDA around the display area DA. The substrate SUB may include a flexible plastic material such as polyimide ("PI"). The display element layer DP-OLED may be disposed in the display area DA.

[0062] A plurality of pixels may be arranged on the circuit element layer DP-CL and the display element layer DP-OLED. The pixels may each include a transistor arranged on the circuit element layer DP-CL and a light emitting element arranged on the display element layer DP-OLED to be connected to the transistor. The configuration of the pixels will be described in detail later.

[0063] The thin film encapsulation layer TFE may be disposed on the circuit element layer DP-CL to cover the display element layer DP-OLED. The thin film encapsulation layer TFE may protect the pixels from moisture, oxygen, and foreign substances.

[0064] refer to Figure 6 , the display panel DP may include a scan driver SDV, a data driver DDV, a light emission driver EDV, and a plurality of pads PD.

[0065] The display panel DP may have a quadrilateral shape in a plan view, for example, a rectangular shape including long sides extending in the first direction DR1 and short sides extending in the second direction DR2, but the shape of the display panel DP is not limited thereto. The display panel DP may include a display area DA and a non-display area NDA surrounding the display area DA.

[0066] The display panel DP may include a plurality of pixels PX, a plurality of scan lines SL1 to SLm, a plurality of data lines DL1 to DLn, a plurality of emission lines EL1 to ELm, first and second control lines CSL1 and CSL2, power lines PL, and connection lines CNL. Here, m and n are natural numbers greater than 1.

[0067] The pixel PX may be disposed in the display area DA, and the scan driver SDV and the light emission driver EDV may be disposed in the non-display area NDA adjacent to the long sides of the display panel DP, respectively. The data driver DDV may be disposed in the non-display area NDA adjacent to any one of the short sides of the display panel DP. In a plan view, the data driver DDV may be adjacent to the lower end of the display panel DP.

[0068] The scan lines SL1 to SLm may extend in the second direction DR2 to be connected to the pixels PX and the scan driver SDV. The data lines DL1 to DLn may extend in the first direction DR1 to be connected to the pixels PX and the data driver DDV. The emission lines EL1 to ELm may extend in the second direction DR2 to be connected to the pixels PX and the light emission driver EDV.

[0069] The power line PL may extend in the first direction DR1 to be disposed in the non-display area NDA. The power line PL may be disposed between the display area DA and the light emission driver EDV, but the inventive concept is not limited thereto and may also be disposed between the display area DA and the scan driver SDV.

[0070] The connection line CNL may extend in the second direction DR2 and be arranged in the first direction DR1, and may thus be connected to the power line PL and the pixel PX. A driving voltage may be applied to the pixel PX through the connection line CNL and the power line PL connected to each other.

[0071] The first control line CSL1 may be connected to the scan driver SDV and extend toward the lower end of the display panel DP. The second control line CSL2 may be connected to the light emission driver EDV and extend toward the lower end of the display panel DP. The data driver DDV may be disposed between the first control line CSL1 and the second control line CSL2.

[0072] The data lines DL1 to DLn may be connected to corresponding pads PD through a data driver DDV. In an embodiment, for example, the data lines DL1 to DLn may be connected to the data driver DDV, and the data driver DDV may be connected to the pads PD corresponding to the data lines DL1 to DLn.

[0073] Although not illustrated in the figure, a printed circuit board may be connected to the pad PD, and a timing controller and a voltage generator may be provided on the printed circuit board. The timing controller may be manufactured as an integrated circuit chip to be provided (e.g., mounted) on the printed circuit board. The timing controller and the voltage generator may be connected to the pad PD through the printed circuit board.

[0074] The scan control signal may be provided to the scan driver SDV through the first control line CSL1. The emission control signal may be provided to the light emission driver EDV through the second control line CSL2. The data control signal may be provided to the data driver DDV. The timing controller may receive an image signal from the outside, and convert the data format of the image signal into a data format that complies with the interface specification of the data driver DDV, and may thus provide the converted data to the data driver DDV.

[0075] The scan driver SDV may generate a plurality of scan signals in response to the scan control signal. The scan signals may be applied to the pixels PX through the scan lines SL1 to SLm. The scan signals may be sequentially applied to the pixels PX.

[0076] The data driver DDV may generate a plurality of data voltages corresponding to the image signal in response to the data control signal. The data voltages may be applied to the pixels PX through the data lines DL1 to DLn. The light emission driver EDV may generate a plurality of emission signals in response to the emission control signal. The emission signals may be applied to the pixels PX through the emission lines EL1 to ELm.

[0077] The pixel PX may receive a data voltage in response to a scan signal. In response to an emission signal, the pixel PX may emit light with a brightness corresponding to the data voltage, thereby displaying an image. The emission time of the pixel PX may be controlled by the emission signal.

[0078] refer to Figure 3 , the upper panel LTP may be disposed below the display module DM. The upper surface of the upper panel LTP may be attached to the lower surface of the display module DM.

[0079] When the upper panel LTP is unfolded, the upper panel LTP may have a quadrilateral shape in a plan view, for example, a rectangular shape including long sides extending in the first direction DR1 and short sides extending in the second direction DR2 .

[0080] The upper plate LTP may include a metal material such as stainless steel (eg, SUS316), but the metal material of the upper plate LTP is not limited thereto. In addition, the inventive concept is not limited thereto, and the upper plate LTP may include a non-metal material such as plastic.

[0081] The upper panel LTP may include a first fixing portion LF1 and a first extension portion LE1. The first fixing portion LF1 may overlap the fixing region DFP of the display module DM. The first extension portion LE1 may overlap the extension region DEP of the display module DM. The first extension portion LE1 may extend from the first fixing portion LF1 in a first direction DR1. The first extension portion LE1 and the first fixing portion LF1 may be arranged in the first direction DR1.

[0082] A plurality of openings LOP may be defined in the first extension portion LE1. The openings LOP may overlap with the extension area DEP of the display module DM. Because the openings LOP are defined, the rigidity of the first extension portion LE1 may be reduced. Therefore, when the openings LOP are defined in the upper panel LTP, the flexibility of the upper panel LTP may be increased compared to when the openings LOP are not defined. As a result, the upper panel LTP may be more easily bent.

[0083] refer to Figure 3 and Figure 7 , the support plate MTP may be disposed below the upper plate LTP and the display module DM, and the upper surface of the support plate MTP may be attached to the lower surface of the upper plate LTP. The support plate MTP may be coupled to the upper plate LTP by welding, but the inventive concept is not limited thereto, and the support plate MTP may be coupled to the upper plate LTP in various ways.

[0084] The support plate MTP may include a metal material such as stainless steel (eg, SUS316), but the metal material of the support plate MTP is not limited thereto. In addition, the inventive concept is not limited thereto, and the support plate MTP may include a non-metal material such as plastic.

[0085] The support plate MTP may include a second fixing portion LF2 and a second extension portion LE2. The second fixing portion LF2 may overlap the first fixing portion LF1 and the fixing region DFP. The second extension portion LE2 may overlap the first extension portion LE1 and the extension region DEP.

[0086] When the display device DD (reference Figure 1A and Figure 1B) when in the contracted mode or the expanded mode, the second fixed part LF2 may not be accommodated in the mobile housing MVS and may be exposed to the outside of the mobile housing MVS.

[0087] When unfolded, the second fixing portion LF2 may include a plate PLA having a quadrilateral shape in a plan view (e.g., a rectangular shape including long sides extending in the first direction DR1 and short sides extending in the second direction DR2). In an embodiment, the plate PLA may include a flat surface defined by the first direction DR1 and the second direction DR2.

[0088] The second extension portion LE2 may include a plurality of support bars MSB. The support bars MSB may extend in the second direction DR2 to be arranged in the first direction DR1. The support bars MSB and the plate PLA may be arranged in the first direction DR1. Figure 3 The openings LOP of the upper plate LTP illustrated in FIG. 4 may each overlap a portion between two supporting rods MSB adjacent to each other.

[0089] A support bar MSB that is most spaced apart from the board PLA among the plurality of support bars MSB may be defined as a coupling support bar COB. A guide groove GGR may be defined in an upper surface of the coupling support bar COB. The guide grooves GGR may be defined to be spaced apart from each other in the second direction DR2. The guide grooves GGR may each extend in the second direction DR2.

[0090] The connecting support rod COB can be connected to the elastic member EPT (reference Figure 2 ). Elastic member EPT (reference Figure 2 ) can each be connected to a corresponding guide groove GGR in the guide groove GGR. Fig.13A The elastic member EPT is described in detail (refer to Figure 2 ) and the connection of the connecting support rod COB.

[0091] Figure 8 for Figure 2 Exploded perspective view of the expansion module illustrated in FIG. Fig. 9 for Figure 8 Figure 3 shows an elastic member illustrated in FIG. Fig.10 for Figure 8 A cross-sectional view of the pressing portion illustrated in FIG. Fig.11 for Figure 8 A diagram of a driving unit and a pressing unit illustrated in FIG. Fig.12 This is a diagram illustrating the connection between the driving unit and the support plate.

[0092] Fig.10 For along Figure 8 An exemplary cross-sectional view taken along line II'.

[0093] Fig.11is a perspective view illustrating the driving portion when viewed from another direction.

[0094] exist Fig.11 In the example, the nut part NTP is omitted.

[0095] exist Fig.12 , only the nut portion NTP of the driving portion DPT is illustrated.

[0096] refer to Figure 8 , the expansion module EMD may include a main housing MCS, a mobile housing MVS, an elastic member EPT, a driving part DPT, a pressing part PUL and a roller part RU, and the main housing MCS may include a first bottom part BP1, a fixed cover BBC and a first side wall part SPW1. The first bottom part BP1 may have a flat plate shape defined by a first direction DR1 and a second direction DR2. The first bottom part BP1 may have a quadrilateral shape in a plan view, for example, a rectangular shape including short sides extending in the first direction DR1 and long sides extending in the second direction DR2.

[0097] The fixing cover BBC may be disposed adjacent to a first side portion of opposite side portions of the first bottom portion BP1 opposite to each other in the first direction DR1. The fixing cover BBC may extend from the first side portion of the first bottom portion BP1 in the third direction DR3. The fixing cover BBC may extend in the second direction DR2 along the long side of the first bottom portion BP1. The first side portion of the opposite side portions of the first bottom portion BP1 opposite to each other in the first direction DR1 may be defined as a side opposite to the opposite side facing the moving housing MVS.

[0098] The first side wall portions SPW1 may be respectively disposed adjacent to opposite sides of the first bottom portion BP1 opposite to each other in the second direction DR2. The first side wall portions SPW1 may face each other in the second direction DR2. The first side wall portions SPW1 may extend in the first direction DR1 along the short sides of the first bottom portion BP1, respectively. Each of the first side portions in the opposite side portions opposite to each other in the first direction DR1 of the first side wall portion SPW1 may be connected to the fixed cover BBC. The first side portion in the opposite side portions opposite to each other in the first direction DR1 of each of the first side wall portions SPW1 may be defined as a side opposite to the opposite side facing the moving housing MVS.

[0099] The first sliding grooves SGR1 may be respectively defined in mutually facing surfaces of the first side wall portion SPW1. The first sliding grooves SGR1 may extend in the first direction DR1. The first sliding grooves SGR1 may extend from the second side portion to the first side portion of the first side wall portion SPW1, respectively.

[0100] The moving housing MVS may include a second bottom portion BP2, a second side wall portion SPW2, a coupling protrusion portion PTP, and a moving cover MCV. The second bottom portion BP2 may have a flat plate shape defined by a first direction DR1 and a second direction DR2. The second bottom portion BP2 may have a short side extending in the first direction DR1 and a long side extending in the second direction DR2.

[0101] The movable cover MCV may be disposed adjacent to a first side portion of opposite side portions of the second bottom portion BP2 that are opposite to each other in the first direction DR1. The movable cover MCV may extend from the first side portion of the second bottom portion BP2 in the third direction DR3. The movable cover MCV may extend in the second direction DR2 along the long side of the second bottom portion BP2. The first side portion of opposite side portions of the second bottom portion BP2 that are opposite to each other in the first direction DR1 may be defined as a side opposite to the opposite side facing the main housing MCS.

[0102] The second side wall portions SPW2 may be respectively disposed adjacent to opposite side portions of the second bottom portion BP2 opposite to each other in the second direction DR2. The second side wall portions SPW2 may face each other in the second direction DR2. The second side wall portions SPW2 may extend in the first direction DR1 along the short sides of the second bottom portion BP2, respectively. The first side portions of the opposite side portions of the second side wall portions SPW2 opposite to each other in the first direction DR1 may be respectively connected to the opposite side portions of the movable cover MCV opposite to each other in the second direction DR2. The first side portion of the opposite side portions of each of the second side wall portions SPW2 opposite to each other in the first direction DR1 may be defined as a side opposite to the opposite side facing the main housing MCS.

[0103] The second sliding grooves SGR2 may be respectively defined in mutually facing surfaces of the second side wall portion SPW2. The second sliding grooves SGR2 may extend in the first direction DR1. The second sliding grooves SGR2 may extend from the second side portion to the first side portion of the second side wall portion SPW2.

[0104] The coupling protrusions PTP may be disposed on the upper surface of the second bottom portion BP2. The coupling protrusions PTP may be spaced apart from each other in the second direction DR2 to be disposed on the upper surface of the second bottom portion BP2. The coupling protrusions PTP may be disposed adjacent to the second side portion of the second bottom portion BP2 in the opposite side portions opposite to each other in the first direction DR1. In a plan view, the coupling protrusions PTP may be disposed between the second side wall portions SPW2. In an embodiment, the coupling protrusions PTP may each have, for example, a cylindrical shape.

[0105] The mobile housing MVS may be disposed on the main housing MCS. The second bottom portion BP2 may be disposed on the first bottom portion BP1. The second side wall portion SPW2 may be disposed in a first sliding groove SGR1 defined in the first side wall portion SPW1. The second side wall portion SPW2 may be coupled to the first side wall portion SPW1 to be slidable in a first direction DR1. The second side wall portion SPW2 may move back and forth in the first direction DR1 relative to the first side wall portion SPW1.

[0106] refer to Figure 2 , Figure 8 and Fig. 9 , the elastic member EPT may be disposed on the upper surface of the second bottom portion BP2. The first side portions of the elastic member EPT may be respectively coupled to the coupling protrusions PTP. Although not illustrated in the figure, the second side portion of the elastic member EPT disposed opposite to the first side portion may be coupled to the coupling support bar COB (reference Figure 7 ). In one embodiment, the first side portion of the elastic member EPT may be coupled to the upper surface of the mobile housing MVS, and the second side portion of the elastic member EPT may be rotatably coupled to the support plate MTP. In one embodiment, the second side portion of the elastic member EPT may be rotatably coupled to the guide groove GGR. Fig.13A The coupling of the elastic member EPT and the coupling support bar COB is described in detail.

[0107] Figure 2 and Figure 8 Two elastic members EPT are exemplified, but the number of the elastic members EPT is not limited thereto. Hereinafter, for convenience of description, any one of the elastic members EPT will be described.

[0108] The elastic member EPT may include a first fixing portion FPL1, a second fixing portion FPL2, and an elastic body SPR. The elastic body SPR may be disposed between the first fixing portion FPL1 and the second fixing portion FPL2. The first fixing portion FPL1 and the second fixing portion FPL2 may be connected to each other through the elastic body SPR.

[0109] When the elastic member EPT is disposed on the upper surface of the second bottom portion BP2, the coupling protrusion PTP may be coupled to the elastic member EPT. The first coupling opening POP1 may be defined in the first fixing portion FPL1. The first coupling opening POP1 may correspond to the shape of the coupling protrusion PTP. The coupling protrusion PTP may be disposed in the first coupling opening POP1.

[0110] The coupling of the elastic member EPT may be performed such that the elastic member EPT rotates around a rotation axis parallel to the third direction DR3. Since the coupling protrusion PTP has a cylindrical shape, the elastic member EPT may rotate around a rotation axis parallel to the third direction DR3.

[0111] The second coupling opening POP2 may be defined in the second fixing portion FPL2. The second fixing portion FPL2 may be connected to the support rod COB (refer to Figure 7 ) of the guide groove GGR (reference Figure 7 ) and the connection unit NSA (reference Fig.13A ) connected to the connecting support rod COB (reference Figure 7 ). Fig.13A The second fixing part FPL2 and the connecting support rod COB (refer to Figure 7 ) connection.

[0112] The elastic body SPR can be connected to the mobile housing MVS through the first fixing part FPL1. The elastic body SPR can be connected to the connecting support rod COB (refer to Figure 7 ). The elastic body SPR can be connected to the support plate MTP through the second fixing part FPL2 (refer to Figure 3 ). The elastomer SPR can be connected to the module set PCR through the second fixed part FPL2 (refer to Figure 3 ).

[0113] In one embodiment, the elastic body SPR may include, for example, a tension spring. A tension spring may be defined as a spring that tends to return to its initial length when it becomes longer than its initial length. The elastic body SPR may extend to the support plate MTP (reference Figure 7 ) to apply elastic force. This will refer to Fig.13D Detailed description.

[0114] The exemplary elastic body SPR is connected to the mobile housing MVS via a first fixing part FPL1 and to the support plate MTP via a second fixing part FPL2 (refer to Figure 7 ), but the present inventive concept is not limited thereto, and the first fixing portion FPL1 and the second fixing portion FPL2 may be omitted. This will refer to Fig.14A and Fig. 14B Detailed description.

[0115] refer to Figure 2 , Figure 8 , Fig. 9 and Fig.11 The pressing portion PUL may be coupled to the moving housing MVS. The pressing portion PUL may be coupled to the second side wall portion SPW2. The pressing portion PUL may be disposed in a second sliding groove SGR2 defined in the second side wall portion SPW2.

[0116] The pressing portion PUL may include a rod portion PB and a third side wall portion SPW3. The rod portion PB may extend in the second direction DR2. The rod portion PB may include a first portion PT1 and a second portion PT2. The first portion PT1 may extend in the second direction DR2. The second portions PT2 may be respectively disposed on opposite sides of the first portion PT1 that are opposite to each other in the second direction DR2. The second portions PT2 may face each other in the second direction DR2. The second portions PT2 may extend in the first direction DR1 from opposite sides of the first portion PT1 that are opposite to each other in the second direction DR2. Basically, the first portion PT1 and the second portion PT2 may be integral.

[0117] Fig.11 The driving groove MGR illustrated in the figure may be defined in the first portion PT1. The driving groove MGR may be defined in a first side portion of opposite side portions of the first portion PT1 opposite to each other in the first direction DR1. The first side portion of opposite side portions of the first portion PT1 opposite to each other in the first direction DR1 may be defined as a side facing the main housing MCS.

[0118] The driving grooves MGR may be spaced apart from each other in the second direction DR2. The driving grooves MGR may each have a partial circular shape. When viewed from the first direction DR1, the driving grooves MGR may extend from the lower surface of the first portion PT1 in the third direction DR3 and may each have a concave shape.

[0119] The roll openings ROP may be defined in the second portion PT2. The roll openings ROP may be respectively defined in surfaces of the second portion PT2 facing each other in the second direction DR2. The roll openings ROP may each have a circular shape when viewed from the second direction DR2.

[0120] refer to Figure 2 , Figure 8 and Fig.10 , the third side wall portions SPW3 may be respectively disposed on opposite side portions of the rod portion PB opposite to each other in the second direction DR2. The third side wall portions SPW3 may be respectively coupled to the second portion PT2 of the rod portion PB. The third side wall portions SPW3 may be respectively coupled to surfaces opposite to surfaces of the second portion PT2 facing each other. The third side wall portions SPW3 may face each other in the second direction DR2.

[0121] The third side wall portion SPW3 may be connected to the second side wall portion SPW2. The third side wall portions SPW3 may be respectively disposed in the second sliding grooves SGR2 defined in the second side wall portion SPW2. The third side wall portion SPW3 may have a shape corresponding to the second sliding groove SGR2. Because the third side wall portion SPW3 is disposed in the second sliding groove SGR2, the pressing portion PUL may be connected to the moving housing MVS.

[0122] Fig.10 The sliding groove SGR illustrated in the figure may be defined in the mutually facing surfaces of the third side wall portion SPW3. Hereinafter, for the convenience of description, any one of the third side wall portions SPW3 will be described. The sliding groove SGR may be defined along the boundary of the third side wall portion SPW3. The sliding groove SGR may include a first sliding groove SGR1, a second sliding groove SGR2, and a third sliding groove SGR3.

[0123] The first slide groove SGR1 may be defined adjacent to an upper portion of the third sidewall portion SPW3. The first slide groove SGR1 may extend in the first direction DR1.

[0124] The second sliding groove SGR2 may be defined adjacent to a lower portion of the third sidewall portion SPW3. The second sliding groove SGR2 may be defined below the first sliding groove SGR1. The second sliding groove SGR2 may extend in the first direction DR1. The first sliding groove SGR1 and the second sliding groove SGR2 may be symmetrical to each other in the third direction DR3.

[0125] The third sliding groove SGR3 may connect the first sliding groove SGR1 to the second sliding groove SGR2. The third sliding groove SGR3 may be defined in a curved shape.

[0126] Module set PCR (reference Figure 2 ) in the second direction DR2 may be disposed in the sliding groove SGR. Figure 7 ) opposite sides opposite to each other in the second direction DR2 may be disposed in the slide groove SGR. Figure 1A and Figure 1B ) When switching from expanded mode to reduced mode, or from reduced mode to expanded mode, the module set PCR (reference Figure 2 ) can move along the sliding groove SGR. This will refer to Fig. 13B and Fig.13E Detailed description.

[0127] The roller portion RU may include a roller ROL and a roller protruding portion RPT. The roller ROL may extend in the second direction DR2 in a plan view and may be disposed between the third side wall portions SPW3 facing each other. The roller ROL may have a cylindrical shape extending in the second direction DR2.

[0128] The roller protrusion portions RPT may be respectively disposed on opposite sides of the roller ROL that are opposite to each other in the second direction DR2. The roller protrusion portions RPT may extend from opposite sides of the roller ROL in the second direction DR2.

[0129] The roller section RU may be connected to the pressing section PUL. The roller section RU may be connected to the rod portion PB of the pressing section PUL. The roller section RU may be connected to the second portion PT2. The roller protrusion RPT may be arranged in the roller opening ROP. Accordingly, the roller section RU may be connected to the pressing section PUL. The roller section RU may be connected to the moving housing MVS through the pressing section PUL.

[0130] refer to Figure 2 , Figure 8 , Fig.11 and Fig.12 The driving portion DPT may be disposed adjacent to one of the opposite side portions of the pressing portion PUL in the first direction DR1. The driving portion DPT may be connected to the pressing portion PUL. The driving portions DPT may be disposed in the corresponding driving grooves MGR in the driving grooves MGR. In one embodiment, the driving portion DPT may be disposed on the support plate MTP (refer to Figure 3 ) and the elastic member EPT. In one embodiment, the driving part DPT can be arranged between the moving housing MVS and the supporting plate MTP (refer to Figure 3 )between.

[0131] The driving parts DPT may each include a nut part NTP, a stop part STP, a screw part SCW, and a motor part MTR. The nut part NTP may be coupled to the plate PLA. Fig.12 As illustrated in FIG. 1 , the nut portion NTP may be coupled to the lower surface of the plate PLA. The plate PLA may be a display device DD (refer to FIG. 1 ). Figure 1A and Figure 1B ) is exposed to the outside regardless of the expansion mode or the reduction mode of the display device DD (reference Figure 1A and Figure 1B ) regardless of the expansion mode or contraction mode, the position of the nut part NTP connected to the plate PLA can be fixed.

[0132] The motor part MTR may be connected to the pressing part PUL. The motor parts MTR may be respectively disposed in the driving grooves MGR defined in the rod part PB. The motor part MTR may be connected to the third side wall part SPW3 through the rod part PB. The motor part MTR may be connected to the moving housing MVS through the third side wall part SPW3 disposed in the second sliding groove SGR2.

[0133] Although not illustrated in the drawings, the motor portion MTR may be rotated by an external power about a rotation axis parallel to the first direction DR1.

[0134] The screw portion SCW may be connected to a first side portion of opposite side portions of each of the motor portions MTR opposite to each other in the first direction DR1. When the motor portion MTR rotates about a rotation axis parallel to the first direction DR1, the screw portion SCW connected to the motor portion MTR may rotate about a rotation axis parallel to the first direction DR1. The first side portion of opposite side portions of each of the motor portions MTR opposite to each other in the first direction DR1 may be defined as a side opposite to a second side portion facing the rod portion PB.

[0135] The screw portions SCW may extend in the first direction DR1. The screw portions SCW may each have a rod shape. A groove may be defined in an outer surface of the screw portion SCW. The groove may be defined in an outer surface of the screw portion SCW in a spiral shape.

[0136] The screw portion SCW may pass through the nut portion NTP. The screw portion SCW may extend in the first direction DR1 to be respectively disposed in openings defined in the nut portion NTP. Although not illustrated in the figure, a protrusion corresponding to a groove defined in the outer surface of the screw portion SCW may be disposed inside the nut portion NTP. Accordingly, when the screw portion SCW rotates around a rotation axis parallel to the first direction DR1, the groove defined in the outer surface of the screw portion SCW may engage with the protrusion. Accordingly, when the screw portion SCW rotates around a rotation axis parallel to the first direction DR1, the screw portion SCW may move back and forth in the first direction DR1 relative to the nut portion NTP.

[0137] The stopper portions STP may be respectively disposed on first side portions of opposite side portions of the screw portion SCW opposite to each other in the first direction DR1. The first side portion of opposite side portions of each of the screw portions SCW opposite to each other in the first direction DR1 may be defined as a side opposite to the second side portion connected to each of the motor portions MTR.

[0138] The stopper portions STP may each have a disc shape. The size of the radius of each of the stopper portions STP may be greater than the size of the radius of each of the screw portions SCW. Accordingly, the stopper portions STP may not pass through the nut portion NTP, and the stopper portions STP may limit movement of the screw portion SCW in the first direction DR1.

[0139] refer to Figure 2 , Figure 7 and Figure 8 , when the motor part MTR to which external power is applied rotates around a rotation axis parallel to the first direction DR1, the screw part SCW can rotate around a rotation axis parallel to the first direction DR1. When rotating, the screw part SCW can move relative to the nut part NTP in the first direction DR1. When the screw part SCW moves in the first direction DR1, the motor part MTR can move in the first direction DR1. When the motor part MTR moves in the first direction DR1, the pressing part PUL connected to the motor part MTR can move in the first direction DR1. When the pressing part PUL moves in the first direction DR1, the movable housing MVS and the roller part RU connected to the pressing part PUL can move in the first direction DR1.

[0140] The mobile housing MVS is movable in the first direction DR1 relative to the main housing MCS. The second side wall portion SPW2 is slidable relative to the first side wall portion SPW1. The overlapping area of ​​the first bottom portion BP1 of the main housing MCS and the second bottom portion BP2 of the mobile housing MVS is changeable.

[0141] When the pressing portion PUL moves in the first direction DR1, the support rod MSB (refer to Figure 7 ) may move along the slide groove SGR. Some support bars MSB disposed in the third slide groove SGR3 may be disposed on the outer surface of the roller ROL. The support bars MSB may move along the outer surface of the roller ROL.

[0142] When the support rod MSB (ref. Figure 7 ) moves along the sliding groove SGR, the first extension portion LE1 (reference Figure 3 ) and the extended area DEP of the display module DM (reference Figure 3 ) can be flatly exposed to the outside. Accordingly, the display device DD can be operated from the reduced mode to the expanded mode.

[0143] FIG. 13A to FIG. 13F The diagrams are diagrams illustrating an expansion mode or a reduction mode of a display device.

[0144] Fig.13A , Fig. 13C , Fig.13D and Fig.13F is an exemplary plan view, Fig. 13B For along Fig.13A A cross-sectional view taken along line II-II', and Fig.13E For along Fig.13D A cross-sectional view taken along line III-III'.

[0145] Fig.13A , Fig. 13C , Fig.13D and Fig.13F The exemplary nut portion NTP is basically arranged on the plate PLA (refer to Fig.12 ), but for ease of description, the plate PLA is omitted.

[0146] Fig.13A and Fig. 13B The display device DD is illustrated in a reduced mode, and Fig.13D and Fig.13E The display device DD is illustrated in an extended mode.

[0147] Fig. 13B and Fig.13E A diagram illustrating a support bar MSB provided in the slide groove SGR of the third side wall portion SPW3.

[0148] For the convenience of description, the display module DM (refer to Figure 3 ) and upper LTP (reference Figure 3 ).

[0149] For ease of description, Fig.13A , Fig. 13C , Fig.13D and Fig.13F Only the coupling support bars COB of the support plate MTP are illustrated.

[0150] because FIG. 13A to FIG. 13F The expansion module EMD and the connecting support rod COB Figure 8 The extension module EMD and Figure 7 The connecting support rod COB is the same, so its description will be omitted or simplified.

[0151] refer to Fig.13A and Fig. 13B When the display device DD is in the reduced mode, the mobile housing MVS can be accommodated in the main housing MCS. When the display device DD is in the reduced mode, the support plate MTP can be accommodated in the mobile housing MVS. The connecting support rod COB can be accommodated in the mobile housing MVS.

[0152] The support plate MTP may be disposed in a slide groove SGR defined in the third side wall portion SPW3. In a reduced mode of the display device DD, the number of support bars MSB disposed in the first slide groove SGR1 may be less than the number of support bars MSB disposed in the second slide groove SGR2. The support bar MSB disposed in the third slide groove SGR3 may be disposed on an outer surface of the roller ROL.

[0153] The elastic member EPT may be coupled to the moving housing MVS and the coupling support bar COB. In particular, the first fixing portions FPL1 of the elastic member EPT may be coupled to the coupling protrusion portions PTP of the moving housing MVS, respectively.

[0154] The second fixing portion FPL2 of the elastic member EPT may be disposed below the coupling support bar COB. A second coupling opening POP2 (refer to Fig. 9 ) may overlap the guide grooves GGR, respectively. The coupling unit NSA may pass through the guide grooves GGR to be inserted into the second coupling opening POP2 (refer to Fig. 9 ). Accordingly, the elastic member EPT may be connected to the supporting plate MTP.

[0155] The driving portion DPT may be disposed on the elastic member EPT. The driving portion DPT may be connected to the pressing portion PUL.

[0156] refer to Fig. 13B and Fig. 13C , when external power is applied to the motor part MTR, the motor part MTR can rotate around a rotation axis parallel to the first direction DR1. When the motor part MTR rotates, the screw part SCW connected to the motor part MTR can rotate around a rotation axis parallel to the first direction DR1. In one embodiment, the motor part MTR and the screw part SCW can rotate clockwise, for example. When rotating, the screw part SCW can move relative to the nut part NTP in the first direction DR1. The motor part MTR connected to the screw part SCW can move in the first direction DR1.

[0157] When the motor part MTR moves in the first direction DR1, the pressing part PUL connected to the motor part MTR may move in the first direction DR1. When the pressing part PUL moves in the first direction DR1, the moving housing MVS connected to the pressing part PUL may move in the first direction DR1. The moving housing MVS may move in the first direction DR1 relative to the main housing MCS. Since the moving housing MVS moves in the first direction DR1, the overlapping area of ​​the main housing MCS and the moving housing MVS may be reduced.

[0158] When the pressing portion PUL moves in the first direction DR1, the roller ROL connected to the pressing portion PUL may move in the first direction DR1. The roller ROL moving in the first direction DR1 may push the support rod MSB in the first direction DR1. Through the roller ROL, the support rod MSB disposed in the third sliding groove SGR3 may move along the outer surface of the roller ROL toward the second sliding groove SGR2. The support rod MSB disposed in the second sliding groove SGR2 may move along the sliding groove SGR toward the first sliding groove SGR1. The connecting support rod COB in the support rod MSB may move in the first direction DR1. As the support rod MSB moves, the display module DM (reference Figure 3 ) and upper LTP (reference Figure 3 ) can also be moved to the upper part.

[0159] The moving speed of the connecting support rod COB may be different from the moving speed of the moving housing MVS. The moving speed of the connecting support rod COB may be higher than the moving speed of the moving housing MVS. Due to the difference in moving speed between the connecting support rod COB and the moving housing MVS, the distance between the connecting protrusion PTP and the connecting support rod COB may gradually increase. As the distance between the connecting protrusion PTP and the connecting support rod COB increases, the elastic member EPT connected to the connecting support rod COB and the connecting protrusion PTP may rotate around a rotation axis parallel to the third direction DR3. When the elastic member EPT rotates, the connecting unit NSA passing through the second fixing part FPL2 and the guide groove GGR may slide in the guide groove GGR in the second direction DR2. Accordingly, the distance between the second fixing parts FPL2 may increase.

[0160] In one embodiment, in a state where the mobile housing MVS moves in the first direction DR1 relative to the main housing MCS, the second fixing parts FPL2 may become closer to each other or farther away from each other. The connecting unit NSA may reach the end portion of the guide groove GGR before the stop portion STP limits the movement of the screw portion SCW. The distance between the connecting units NSA connected to the connecting support rod COB may become maximum. At this time, the second fixing parts FPL2 connected to the connecting unit NSA may rotate, and thus the distance between the second fixing parts FPL2 may become maximum, and accordingly the elastic member EPT may be stretched. When the elastic member EPT rotates, the first length L1 defined as the initial length of each of the elastic members EPT may remain constant.

[0161] refer to Fig.13D and Fig.13EThe motor part MTR can keep rotating around the rotation axis parallel to the first direction DR1 until the stop part STP limits the movement of the screw part SCW in the first direction DR1. The pressing part PUL, the roller ROL and the moving housing MVS can keep moving in the first direction DR1 by the motor part MTR. The connecting support rod COB can move in the first direction DR1 by the roller ROL.

[0162] When the coupling support bar COB moves in the first direction DR1, the distance between the coupling support bar COB and the coupling protrusion PTP may increase. Accordingly, the length of each of the elastic members EPT connected to the coupling support bar COB may increase. The length of the elastomer SPR of each of the elastic members EPT may increase. As the length of the elastomer SPR increases, an elastic force may be generated in which the elastomer SPR tends to return to a state in the first length L1. The elastic member EPT may apply an elastic force to the coupling support bar COB.

[0163] When the movement of the screw portion SCW in the first direction DR1 is limited by the stop portion STP, the pressing portion PUL, the roller ROL and the moving housing MVS may stop. When the moving housing MVS stops, the overlapping area of ​​the main housing MCS and the moving housing MVS may become minimum. When the overlapping area of ​​the moving housing MVS and the main housing MCS is minimum, the display device DD (reference Figure 1B ) can be in the extended mode. In one embodiment, when the overlapping area of ​​the mobile housing MVS and the main housing MCS is the smallest, the elastic member EPT can be stretched and moved toward the support plate MTP (reference Figure 3 ) applies elastic force.

[0164] In the display device DD (reference Figure 1B ), the number of the support bars MSB disposed in the first sliding groove SGR1 may be greater than the number of the support bars MSB disposed in the second sliding groove SGR2. Figure 3 ) may also have an enlarged area to be exposed to the outside.

[0165] When the display device DD (reference Figure 1B ) is in the expansion mode, the length of the elastic body SPR of the elastic member EPT can be limited to a second length L2. The second length L2 can be greater than the first length L1 (refer to Fig. 13C ). Accordingly, elastic force can be generated in the elastic body SPR.

[0166] refer to Fig.13D , Fig.13E and Fig.13F , when the display device DD (reference Figure 1B)When the motor part MTR is converted from the expansion mode to the contraction mode, the motor part MTR can rotate around a rotation axis parallel to the first direction DR1. When the motor part MTR rotates, the screw part SCW connected to the motor part MTR can rotate around a rotation axis parallel to the first direction DR1. In one embodiment, the motor part MTR and the screw part SCW can rotate counterclockwise, for example. With the rotation, the screw part SCW can move in the first direction DR1 relative to the nut part NTP. When the screw part SCW moves in the first direction DR1, the motor part MTR connected to the screw part SCW can move in the first direction DR1. When the motor part MTR moves in the first direction DR1, the pressing part PUL connected to the motor part MTR can move in the first direction DR1.

[0167] When the pressing portion PUL moves in the first direction DR1, the mobile housing MVS connected to the pressing portion PUL may move in the first direction DR1. When the display device DD is converted from the extended mode to the reduced mode, the overlapping area of ​​the main housing MCS and the mobile housing MVS may increase. In one embodiment, in a state where the overlapping area of ​​the mobile housing MVS and the main housing MCS is the largest, the display module DM may operate in a reduced mode in which the display module DM is retracted into the mobile housing MVS.

[0168] As the pressing portion PUL moves in the first direction DR1, the support rod MSB disposed in the sliding groove SGR may move. At this time, a static friction force may be generated between the support rod MSB and the third side wall portion SPW3 in contact with the support rod MSB. The elastic member EPT connected to the connecting support rod COB may apply an elastic force to the connecting support rod COB. The elastic member EPT may apply an elastic force greater than the static friction force to the support plate MTP. The elastomer SPR that has applied the elastic force to the support plate MTP may shrink from the second length L2 to the first length L1.

[0169] The support rod MSB to which an elastic force greater than the static friction force is applied can move from the first sliding groove SGR1 to the second sliding groove SGR2 via the third sliding groove SGR3. Figure 3 ) can be moved into the mobile housing MVS.

[0170] Hereinafter, the display device DD (refer to Figure 1B ) The process of switching from extended mode to reduced mode follows the same procedure as reference FIG. 13A to FIG. 13E The described process is performed in the reverse order, and therefore its description will be omitted.

[0171] Fig.14A and Fig. 14B A diagram illustrating a support rod according to a comparative example. Fig. 14C and Fig.14DFIG. 1 is a diagram illustrating an embodiment of a support rod according to the inventive concept.

[0172] Fig.14A and Fig. 14B 2 is a cross-sectional view illustrating the support bar MSB′ and the third side wall portion SPW3 when viewed from the second direction DR2.

[0173] refer to Fig.14A and Fig. 14B , when the display device DD (reference Figure 1B ) When the expansion mode is switched to the contraction mode, the support rod MSB' may move along the sliding groove SGR. At this time, a static friction force may be generated between the support rod MSB' and the sliding groove SGR. Due to the static friction force, the moving speeds of adjacent support rods MSB' may be different from each other. Fig. 14B As illustrated in FIG. 1 , the distance between adjacent support bars MSB′ decreases, and thus the support plate MTP (refer to Figure 7 ) is deformable. Therefore, the support plate MTP (reference Figure 7 ) on the display module DM' may also be deformed. In one embodiment, the upper plate LTP' may be between the support plate MTP (refer to Figure 7 ) and the display module DM'.

[0174] refer to Fig.13D , Fig.13F , Fig. 14C and Fig.14D , when the display device DD (reference Figure 1B )When the expansion mode is switched to the contraction mode, the elastomer SPR of the elastic member EPT can be stretched from the first length L1 to the second length L2. As the length of the elastomer SPR increases, the elastomer SPR can generate elastic force. The elastomer SPR connected to the connecting support rod COB can apply elastic force to the connecting support rod COB. The magnitude of the elastic force can be greater than the magnitude of the static friction force. Accordingly, the support rods MSB adjacent to each other can move at the same speed, and the distance between the adjacent support rods MSB can be kept constant. Therefore, the support plate MTP (reference Figure 7 ) deformation, thereby preventing the support plate MTP (reference Figure 7 ) on the display module DM.

[0175] Fig.15A and Fig. 15B is a diagram illustrating another embodiment of an elastic member according to the inventive concept.

[0176] Fig.15A is a perspective view illustrating the elastic member EPTa, and Fig. 15B FIG. 1 is a plan view of an example extension module EMDa.

[0177] Fig. 15B The extension module EMDa is instantiated in a reduced mode.

[0178] Fig. 15B Only the support rod MSB is shown as an example (refer to Figure 7 ) in the connecting support rod COB.

[0179] In one embodiment, Fig. 15B The main housing MCS, the mobile housing MVS, the roller ROL, the pressing part PUL, the driving part DPT, the connecting support rod COB and the connecting unit NSA are respectively connected to Fig.13A The main housing MCS, the moving housing MVS, the roller ROL, the pressing portion PUL, the driving portion DPT, the coupling support rod COB and the coupling unit NSA are the same, and therefore, for example, descriptions thereof will be omitted or simplified.

[0180] refer to Fig.15A , the elastic member EPTa may include an elastic body SPR and rings HK respectively disposed on opposite side portions of the elastic body SPR. The elastic body SPR may be a tension spring. The ring HK may extend from the opposite side portions of the elastic body SPR. Basically, the elastic body SPR and the ring HK may be integrated.

[0181] The ring HK may include a first ring HK1 and a second ring HK2. The first ring HK1 and the second ring HK2 may be symmetrical with respect to the elastic body SPR.

[0182] refer to Fig.15A and Fig. 15B , hereinafter, for the convenience of description, any one of the plurality of elastic members EPTa will be described. The first ring HK1 of the rings HK of the elastic member EPTa may be coupled to each of the coupling protrusions PTP of the mobile housing MVS. Through the first ring HK1, the elastic member EPTa may be coupled to the mobile housing MVS. The second ring HK2 may be coupled to the coupling support bar COB through the coupling unit NSA.

[0183] Although not illustrated in the drawings, when the mobile housing MVS moves in the first direction DR1 relative to the main housing MCS, the elastic member EPTa may rotate about a rotation axis parallel to the third direction DR3. When the elastic member EPTa rotates, the second ring HK2 may move along the guide groove GGR in the second direction DR2. The distance between the second rings HK2 spaced apart from each other in the second direction DR2 may increase.

[0184] Although not illustrated in the figure, after the coupling units NSA are respectively disposed in the end portions of the guide grooves GGR, the coupling support bars COB may keep moving in the first direction DR1. Accordingly, the elastic member EPTa may be stretched. The elastic body SPR of the elastic member EPTa may be stretched. As the elastic body SPR is stretched, an elastic force may be generated.

[0185] refer to Fig.13E and Fig. 15B , when the display device DD (reference Figure 1A ) when the expansion mode is switched to the contraction mode, the elastic member EPTa may apply an elastic force to the connecting support bar COB. The magnitude of the elastic force may be greater than the magnitude of the friction force generated between the support bar MSB and the third side wall portion SPW3. Accordingly, the moving speed of the support bars MSB may be the same, and the distance between adjacent support bars MSB may be kept constant. Therefore, the support plate MTP may be prevented from being deformed, thereby preventing the display module DM (reference Figure 3 ) deformation.

[0186] In one embodiment of the present invention, an elastic member may be coupled to a mobile housing and a support plate including a support rod. When the display device is switched from an expansion mode in which an exposed surface of a display module is expanded to a contraction mode in which an exposed surface of the display module is contracted, a static friction force may be generated between the support rod and the pressing portion. The elastic member may apply an elastic force greater than the static friction force to the support plate. Accordingly, the support rod may be easily moved without being deformed. Therefore, deformation of the support rod may be prevented.

[0187] Although the embodiments of the inventive concept have been described, it should be understood that the inventive concept should not be limited to these embodiments, but a person of ordinary skill in the art may make various changes and modifications within the spirit and scope of the inventive concept as claimed in the claims. In addition, the embodiments of the inventive concept disclosed herein are not intended to limit the technical ideas of the inventive concept, but should be interpreted as all technical ideas within the scope of the claims and their equivalents are included in the scope of the rights of the inventive concept.

Claims

1. A display device, comprising: Display module; A support plate is arranged below the display module, and the support plate comprises: Board; and a plurality of support rods arranged together with the plate in a first direction and extending in a second direction intersecting the first direction; A main housing, arranged below the support plate; a movable housing disposed between the support plate and the main housing and movable in the first direction relative to the main housing; and an elastic member disposed on an upper surface of the moving housing and coupled to the support plate, When the overlapping area between the moving housing and the main housing is at a minimum, the elastic member is stretched and applies elastic force to the support plate.

2. The display device according to claim 1, wherein the elastic member is provided in plurality, First side portions of a plurality of elastic members are coupled to the upper surface of the moving housing, and second side portions of the plurality of elastic members opposite to the first side portions are rotatably coupled to the support plate.

3. The display device according to claim 2, wherein a support rod among the plurality of support rods that is most spaced apart from the panel is defined as a coupling support rod, A plurality of guide grooves extending in the second direction are defined in an upper surface of the coupling support bar, and the second side portions of the plurality of elastic members are rotatably coupled to the plurality of guide grooves.

4. The display device according to claim 3, wherein in a state where the overlapping area of ​​the mobile housing and the main housing is maximized, the display module operates in a reduced mode in which the display module is retracted into the mobile housing, In a state where the overlapping area between the mobile housing and the main housing is minimized, the display module operates in an extended mode in which the display module is extended from the mobile housing, and In a state where the contraction mode is converted to the expansion mode, a distance between the second side portions of the plurality of elastic members increases. 5 . The display device of claim 4 , wherein each of the plurality of elastic members is stretched in a state in which the distance between the second side portions of the plurality of elastic members is maximum.

6. The display device according to claim 1, further comprising a pressing portion provided on the moving housing and comprising a plurality of side wall portions facing each other in the second direction, A plurality of slide grooves are defined in mutually facing surfaces of the plurality of side wall portions, and opposite sides of each of the plurality of support bars that are opposite to each other in the second direction are disposed in the plurality of slide grooves.

7. The display device according to claim 6, further comprising: a roller extending in the second direction in a plan view and disposed between the plurality of side wall portions facing each other; as well as The driving part is disposed between the supporting plate and the elastic member and connected to the pressing part. 8 . The display device according to claim 7 , wherein some of the plurality of support bars are disposed on an outer surface of the roller.

9. The display device according to claim 7, wherein the driving unit comprises: a nut portion disposed on a lower surface of the plate; a screw portion extending in the first direction and passing through the nut portion; as well as a motor portion connected to the pressing portion, and The moving housing moves in the first direction relative to the main housing in a state where the motor portion rotates about a rotation axis parallel to the first direction. 10 . The display device according to claim 1 , wherein the elastic member comprises a tension spring.

11. The display device according to claim 10, wherein the elastic member further comprises: a first fixed portion coupled to the mobile housing; as well as a second fixing portion coupled to the support plate, and The tension spring is disposed between the first fixing portion and the second fixing portion.

12. A display device, comprising: Display module; A support plate, disposed below the display module, and having a plurality of guide grooves defined therein; A main housing, arranged below the support plate; A movable housing, disposed between the main housing and the support plate, and slidably coupled to the main housing; as well as a plurality of elastic members disposed on an upper surface of the moving housing and coupled to the plurality of guide grooves, wherein in a state where the moving housing moves relative to the main housing in the first direction, portions of the plurality of elastic members coupled to the plurality of guide grooves become closer to each other or farther away from each other, and In a state where the distance between the portions of the plurality of elastic members is maximum, the plurality of elastic members are stretched and apply elastic force to the support plate.

13. The display device according to claim 12, wherein the support plate comprises: a plate including a flat surface defined by the first direction and a second direction intersecting the first direction; as well as a plurality of support rods arranged together with the plate in the first direction and extending in the second direction, and The plurality of guide grooves are defined in the coupling support rod, and a support rod of the plurality of support rods that is most spaced apart from the plate is defined as the coupling support rod.

14. The display device according to claim 13, further comprising a pressing portion coupled to the moving housing and comprising a plurality of side wall portions facing each other in the second direction, A plurality of slide grooves are defined in mutually facing surfaces of the plurality of side wall portions, and opposite sides of each of the plurality of support bars that are opposite to each other in the second direction are disposed in the plurality of slide grooves.

15. The display device according to claim 14, further comprising: a roller disposed between the plurality of side wall portions; as well as a driving part, disposed between the moving housing and the supporting plate and connected to the pressing part, Some of the plurality of support rods are disposed on an outer surface of the roller.

16. The display device according to claim 12, further comprising a plurality of coupling units provided in the plurality of guide grooves to connect the support plate and the plurality of elastic members to each other, wherein first side portions of the plurality of elastic members are coupled to the upper surface of the moving housing, and second side portions of the plurality of elastic members disposed opposite to the first side portions are rotatably coupled to the plurality of guide grooves through the plurality of coupling units. 17 . The display device of claim 16 , wherein in a state in which the second side portions of the plurality of elastic members are rotated, the plurality of coupling units move along the plurality of guide grooves in a second direction crossing the first direction.

18. The display device according to claim 16, wherein in a state where the overlapping area of ​​the mobile housing and the main housing is maximized, the display module operates in a reduced mode in which the display module is retracted into the main housing, In a state where the overlapping area of ​​the mobile housing and the main housing is minimized, the display module operates in an extended mode in which the display module is extended from the main housing, and A distance between the second side portions of the plurality of elastic members in the contracted mode is smaller than a distance between the second side portions of the plurality of elastic members in the expanded mode. 19 . The display device of claim 12 , wherein at least one of the plurality of elastic members comprises a tension spring.

20. The display device according to claim 19, wherein the at least one of the plurality of elastic members further comprises: A first fixing portion coupled to an upper surface of the moving housing; as well as a second fixing portion coupled to each of the plurality of guide grooves, and The tension spring is disposed between the first fixing portion and the second fixing portion.

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