Display device

Abstract

This invention discloses a display device. According to one embodiment of the invention, the display device may include: a display panel; a flat plate disposed below the display panel; and a folding module disposed below the flat plate to support the display panel. The folding module may include: a hinge portion; a first support portion coupled to the hinge portion; a second support portion coupled to the hinge portion; a first secondary support portion coupled to the first support portion and rotatable; and a second secondary support portion coupled to the second support portion and rotatable.

Description

Technical Field

[0001] This invention relates to a foldable display device. Background Technology

[0002] Typically, electronic devices that provide images to users, such as smartphones, digital cameras, laptops, navigation devices, and smart TVs, include display devices for displaying images. These display devices generate images and present them to the user via a screen.

[0003] Recently, with the technological advancements in display devices, various forms of display devices have been developed. For example, flexible display devices that can be deformed into curved shapes, folded, or rolled up have been developed. Flexible display devices are easy to carry, improving user convenience.

[0004] In flexible display devices, the foldable display device folds based on a folding axis extending in one direction. However, in foldable display devices, previously unforeseen problems such as deformation of the folding area and damage to components in the folding area have occurred, requiring the development of technologies to solve these problems. Summary of the Invention

[0005] One object of the present invention is to provide a display device that improves the flatness of the display panel in the unfolded state.

[0006] One object of the present invention is to provide a display device including a folding module that improves durability against external impacts.

[0007] A display device according to an embodiment of the present invention may include: a display panel, comprising: a first non-foldable region; a second non-foldable region spaced apart from the first non-foldable region in a first direction; a foldable region disposed between the first non-foldable region and the second non-foldable region; a first curved region disposed between the foldable region and the first non-foldable region; and a second curved region disposed between the foldable region and the second non-foldable region; a flat plate disposed below the display panel; and a folding module disposed below the flat plate and supporting the display panel. The folding module may include: a hinge portion supporting the foldable region; a first support portion supporting the first non-foldable region and coupled to the hinge portion; a second support portion supporting the second non-foldable region and coupled to the hinge portion; a first secondary support portion supporting the first curved region and coupled to the first support portion for rotation; and a second secondary support portion supporting the second curved region and coupled to the second support portion for rotation.

[0008] The folding module may include: a hinge portion supporting the folding area; a first support portion supporting the first non-folding area and connected to the hinge portion; a second support portion supporting the second non-folding area and connected to the hinge portion; a first secondary support portion supporting the first curved area and connected to the first support portion for rotation; and a second secondary support portion supporting the second curved area and connected to the second support portion for rotation.

[0009] It is possible that, when the display device is folded, the distance between the first non-folded area and the second non-folded area of ​​the display panel is less than twice the radius of curvature of the folded area.

[0010] Alternatively, the first and second auxiliary support portions may be in contact with the plate, or the first and second support portions may be combined with the plate.

[0011] The hinge portion may include: a main body extending in a second direction intersecting the first direction; a plurality of first wings rotatably coupled to the main body; and a plurality of second wings rotatably coupled to the main body. Alternatively, the plurality of first wings may be coupled to the first support portion, and the plurality of second wings may be coupled to the second support portion.

[0012] Alternatively, when the display device is folded, the first secondary support and the second secondary support are separated from the main body.

[0013] Alternatively, the main body may define an internal space, and the display device may further include an electronic module disposed in the internal space.

[0014] Alternatively, when the display device is folded, the main body may come into contact with the flat panel.

[0015] It may be that the main body portion has the following defined features: a first plane; a second plane spaced apart from the first plane in the first direction; and a support groove recessed between the first plane and the second plane.

[0016] Alternatively, the folding module may further include: a first shaft, which is coupled to the first support portion and passes through the first secondary support portion; and a second shaft, which is coupled to the second support portion and passes through the second secondary support portion.

[0017] Alternatively, the folding module may further include: a first spring configured to be penetrated by the first shaft and coupled to the first support portion and the first secondary support portion; and a second spring configured to be penetrated by the second shaft and coupled to the second support portion and the second secondary support portion.

[0018] The folding module may further include: a first guide portion disposed below the first sub-support portion; and a second guide portion disposed below the second sub-support portion, wherein the first support portion defines a first receiving groove for receiving the first guide portion, and the second support portion defines a second receiving groove for receiving the second guide portion.

[0019] Alternatively, when viewed on a plane, the first guide portion protrudes from the first secondary support portion in a second direction intersecting the first direction, and the second guide portion protrudes from the second secondary support portion in the second direction.

[0020] The plate may include: a first plate disposed below the first curved region and the first non-folded region; and a second plate disposed below the second curved region and the second non-folded region, and spaced apart from the first plate in the first direction.

[0021] Alternatively, the flat plate may be disposed below the first non-folded region, the second non-folded region, the folded region, the first curved region, and the second curved region, and the flat plate may have a continuous shape.

[0022] It is possible that, when viewed on a plane, multiple grooves are defined in the portion of the flat plate that overlaps with the folded area.

[0023] Alternatively, when the display device is folded, the folded area has a first curvature, and the first curved area and the second curved area each have a second curvature smaller than the first curvature in the opposite direction to the first curvature.

[0024] The first support portion may include: a first lower support portion defining a first opening; a first upper support portion disposed on the first lower support portion and slidably coupled to the first lower support portion; and a first elastic portion disposed in the first opening.

[0025] The display device according to an embodiment of the present invention may include: a display panel capable of being folded or unfolded; a flat plate disposed below the display panel; a hinge portion disposed below the flat plate; a first support portion disposed below the flat plate and coupled to one side of the hinge portion; a second support portion disposed below the flat plate and coupled to the other side of the hinge portion; a first secondary support portion disposed between the first support portion and the hinge portion; and a second secondary support portion disposed between the second support portion and the hinge portion.

[0026] Alternatively, when the display panel is unfolded, the top surface of the hinge portion, the top surface of the first support portion, the top surface of the second support portion, the top surface of the first sub-support portion, and the top surface of the second sub-support portion may be provided as flat surfaces.

[0027] Alternatively, the plate may be combined with the first support portion and the second support portion, and the plate may be in contact with the hinge portion, the first secondary support portion, and the second secondary support portion.

[0028] Alternatively, when the display panel is folded, the hinge portion is separated from the first secondary support portion and the second secondary support portion.

[0029] (The effect of the invention)

[0030] According to the present invention, a flat plate disposed below the display panel can support the underside of the folded or unfolded display panel. When the display panel is in the unfolded state, the flatness of the display panel can be improved by the flat plate. Therefore, in the unfolded state, the shape of the folded area can be maintained by the flat plate. In addition, the folded area of ​​the display panel can be supported by the main body. For example, when the display panel is in the unfolded state, the folded area of ​​the display panel can be supported by the main body to maintain flatness. The main body can prevent the folded area of ​​the display panel from sagging. That is, by means of the flat plate and the main body, the shape deformation of the folded area of ​​the display panel can be reduced in the unfolded state.

[0031] According to the present invention, the main body can be separated from the first secondary support, the second secondary support, the first support, and the second support by a predetermined gap. Therefore, even if an external impact is applied to the display device, the probability of the first secondary support and the second secondary support colliding with the main body can be reduced, thereby reducing the probability of the folding module being deformed. Thus, the display device can improve its durability against external impacts. Attached Figure Description

[0032] Figure 1a This is a perspective view of a display device according to an embodiment of the present invention.

[0033] Figure 1b This illustrates an embodiment of the present invention. Figure 1a A diagram showing the folded state of the display device.

[0034] Figure 2a This is a perspective view of a display device according to an embodiment of the present invention.

[0035] Figure 2b This illustrates an embodiment of the present invention. Figure 2a A diagram showing the folded state of the display device.

[0036] Figure 3This is a perspective view of a display device according to an embodiment of the present invention.

[0037] Figure 4 This is an exploded perspective view of a display device according to an embodiment of the present invention.

[0038] Figure 5a According to an embodiment of the present invention, along Figure 3 The cross-sectional view taken from I-I'.

[0039] Figure 5b This is a cross-sectional view showing a folded display device according to an embodiment of the present invention.

[0040] Figure 6a According to an embodiment of the present invention, along Figure 3 The cross-sectional view taken from section II-II'.

[0041] Figure 6b According to an embodiment of the present invention, along Figure 3 The cross-sectional view taken from section III-III'.

[0042] Figure 7 This is a cross-sectional view showing a folded display device according to an embodiment of the present invention.

[0043] Figure 8 This is a cross-sectional view showing a folded display device according to an embodiment of the present invention.

[0044] Figure 9 This is a cross-sectional view showing a folded display device according to an embodiment of the present invention.

[0045] Figure 10a This is a cross-sectional view of a portion of a display device according to an embodiment of the present invention.

[0046] Figure 10b This is according to an embodiment of the present invention. Figure 10a A cross-sectional view of the display device being folded.

[0047] (Explanation of reference numerals in the attached diagram)

[0048] DD: Display device; DP: Display panel

[0049] PL: Flat Panel; FM: Foldable Module

[0050] HG: Hinge section; SP1: First support section

[0051] SP2: Second support section; SS1: First auxiliary support section

[0052] SS2: Second Support Section Detailed Implementation

[0053] In this specification, when a constituent element (or region, layer, part, etc.) is referred to as being "on", "connected" or "combined" with other constituent elements, it means that it can be directly configured / connected / combined with other constituent elements or that a third constituent element can be configured between them.

[0054] The same reference numerals refer to the same constituent elements. Furthermore, in the drawings, the thickness, scale, and dimensions of the constituent elements are enlarged for the purpose of effectively illustrating the technical content.

[0055] "and / or" includes all combinations that the associated structure can define.

[0056] The terms "first," "second," etc., can be used to describe various constituent elements, but these constituent elements should not be limited by these terms. The terms are used only for the purpose of distinguishing one constituent element from others. For example, without departing from the scope of the invention, a first constituent element can be named a second constituent element, and similarly, a second constituent element can be named a first constituent element. Unless explicitly indicated differently in the context, singular expressions include plural expressions.

[0057] In addition, terms such as "below," "lower side," "above," and "upper side" are used to explain the relationship between the structures shown in the figure. These terms are relative concepts and are explained based on the direction indicated in the figure.

[0058] Unless otherwise defined, all terms used in this specification (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Furthermore, terms such as those defined in commonly used dictionaries shall be interpreted as having a meaning consistent with their meaning in the context of the related art, and may be expressly defined herein as long as they are not interpreted as having an idealized or overly formal meaning.

[0059] Terms such as “including” or “having” should be understood as specifying the presence of features, figures, steps, actions, constituent elements, components, or combinations thereof described in the specification, without pre-excluding the presence or additional possibility of one or more other features or figures, steps, actions, constituent elements, components, or combinations thereof.

[0060] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0061] Figure 1a This is a perspective view of a display device according to an embodiment of the present invention. Figure 1b This illustrates an embodiment of the present invention. Figure 1a A diagram showing the folded state of the display device.

[0062] Reference Figure 1a as well as Figure 1b The display device DD can be a device activated by an electrical signal. For example, the display device DD can be a mobile phone, tablet computer, car navigation system, game console, or wearable device, but is not limited thereto. The display device DD can be a flexible display device.

[0063] The display device DD can be parallel to the surface defined by the first direction DR1 and the second direction DR2 intersecting the first direction DR1. The normal direction of the display device DD, that is, the thickness direction of the display device DD, can point to the third direction DR3.

[0064] The front (or top) and back (or bottom) of each component or unit described below can be divided by a third direction DR3. The third direction DR3 can be a direction intersecting the first direction DR1 and the second direction DR2. For example, the first direction DR1, the second direction DR2, and the third direction DR3 can be orthogonal to each other. Furthermore, in this specification, the surface defined by the first direction DR1 and the second direction DR2 can be defined as a plane, and "viewed from the plane" can be defined as viewed from the third direction DR3.

[0065] The display device DD may include a folded region DD-FA and multiple non-folded regions DD-NFA1 and DD-NFA2. The multiple non-folded regions DD-NFA1 and DD-NFA2 may include a first non-folded region DD-NFA1 and a second non-folded region DD-NFA2. The folded region DD-FA may be disposed between the first non-folded region DD-NFA1 and the second non-folded region DD-NFA2. The folded region DD-FA, the first non-folded region DD-NFA1, and the second non-folded region DD-NFA2 may be arranged in a first direction DR1.

[0066] exist Figure 1a as well as Figure 1b The illustration exemplarily shows a folded region DD-FA and two non-folded regions DD-NFA1 and DD-NFA2, but the number of folded regions DD-FA and non-folded regions DD-NFA1 and DD-NFA2 according to an embodiment of the present invention is not limited thereto. For example, a display device DD according to an embodiment of the present invention may include more than two non-folded regions and more than two folded regions disposed between the more than two non-folded regions.

[0067] The top of the display device DD can be defined as the display surface DS. The display surface DS can have a plane defined by a first direction DR1 and a second direction DR2. Through the display surface DS, the image IM generated in the display device DD can be provided to the user.

[0068] The display surface DS may include a display area DA and a non-display area NDA adjacent to the display area DA. The display area DA may display an image IM, while the non-display area NDA may not display the image IM. The non-display area NDA may surround the display area DA, defining the edge of the display device DD printed in a predetermined color.

[0069] The display device DD can be a foldable (foldable) display device DD that can be folded or unfolded. The display device DD can be folded by folding the folding area DD-FA with reference to the folding axis FX extending in the second direction DR2. For example, the folding axis FX can be defined as the long axis parallel to the long side of the display device DD.

[0070] When the display device DD is folded, the first non-folding area DD-NFA1 and the second non-folding area DD-NFA2 can face each other. The display device DD can be in-folded so that the display surface DS is not exposed to the outside.

[0071] Figure 2a This is a perspective view of a display device according to an embodiment of the present invention. Figure 2b This illustrates an embodiment of the present invention. Figure 2a A diagram showing the folded state of the display device. (In the description...) Figure 2a as well as Figure 2b At that time, targeting through Figure 1a as well as Figure 1b The constituent elements described are labeled with the same reference numerals in the accompanying drawings, and the description of these elements is omitted.

[0072] Reference Figure 2a as well as Figure 2b The display device DD-1 may include a folded region DD-FA' and multiple non-folded regions DD-NFA1' and DD-NFA2'. The multiple non-folded regions DD-NFA1' and DD-NFA2' may include a first non-folded region DD-NFA1' and a second non-folded region DD-NFA2'. The folded region DD-FA' may be configured between the first non-folded region DD-NFA1' and the second non-folded region DD-NFA2'. The folded region DD-FA', the first non-folded region DD-NFA1', and the second non-folded region DD-NFA2' may be arranged in a second direction DR2.

[0073] The display device DD-1 can be a foldable (foldable) display device that can be folded or unfolded. The display device DD-1 can be folded by folding the folding region DD-FA' with respect to a folding axis FX' extending in the first direction DR1. For example, the folding axis FX' can be defined as a short axis parallel to the short side of the display device DD-1. When the display device DD-1 is folded, the first non-folding region DD-NFA1' and the second non-folding region DD-NFA2' can face each other. The display device DD-1 can be in-folded so that the display surface DS is not exposed to the outside.

[0074] The following describes the structure of a display device DD that is folded with respect to its long axis, but it is not limited thereto. The structure described below can also be applied to a display device DD-1 that is folded with respect to its short axis.

[0075] Figure 3 This is a perspective view of a display device according to an embodiment of the present invention. Figure 4 This is an exploded perspective view of a display device according to an embodiment of the present invention.

[0076] Reference Figure 3 as well as Figure 4 The display device DD may include a display panel DP, a flat panel PL, and a folding module FM.

[0077] The display panel (DP) can be a structure that substantially generates the image (IM). The display panel (DP) can be a light-emitting display panel, without particular limitation. For example, the display panel (DP) can be an organic light-emitting display panel or a quantum dot light-emitting display panel. The light-emitting layer of the organic light-emitting display panel may include organic light-emitting materials. The light-emitting layer of the quantum dot light-emitting display panel may include quantum dots and / or quantum rods.

[0078] The display panel DP may include a first non-folding region NFA1, a second non-folding region NFA2, a folding region FA, a first curved region BA1, and a second curved region BA2. The second non-folding region NFA2 may be spaced apart from the first non-folding region NFA1 in a first direction DR1. The folding region FA may be configured between the first non-folding region NFA1 and the second non-folding region NFA2. The first curved region BA1 may be configured between the folding region FA and the first non-folding region NFA1. The second curved region BA2 may be configured between the folding region FA and the second non-folding region NFA2.

[0079] The folding area FA, the first bending area BA1, and the second bending area BA2 can correspond to the display device DD (see reference). Figure 1a The folded area DD-FA of the display device. The first non-folded area NFA1 may correspond to the display device DD (refer to...). Figure 1aThe first non-folding region DD-NFA1. The second non-folding region NFA2 may correspond to the display device DD (refer to...). Figure 1a The second unfolded region DD-NFA2.

[0080] The flat panel PL can be configured below the display panel DP. The flat panel PL can support the display panel DP. The flat panel PL can be attached to the display panel DP. For example, the flat panel PL can be attached to the opposite side of the front of the display panel DP, i.e., the back of the display panel DP. The front of the display panel DP can be the side displaying the image IM.

[0081] The flat plate PL can include metal. The flat plate PL can be stainless steel (SUS). However, this is exemplary, and the material of the flat plate PL according to an embodiment of the invention is not limited thereto. For example, the flat plate PL can be titanium alloy (Ti alloy) or Invar. The thickness TH-PL of the flat plate PL can be from 0.05 mm to 0.2 mm. However, this is exemplary, and the thickness TH-PL of the flat plate PL according to an embodiment of the invention is not limited as long as it is a foldable thickness.

[0082] According to the present invention, the flat plate PL can be folded or unfolded along with the display panel DP. The flat plate PL can support the folded or unfolded display panel DP, thereby improving the flatness of the display panel DP. The folded area FA of the display panel DP can be supported by the flat plate PL to maintain flatness. Therefore, the shape deformation of the folded area FA of the display panel DP can be reduced in the unfolded state.

[0083] The folding module FM can be configured below the flat panel PL. The folding module FM can support the folded or unfolded display panel DP and the flat panel PL. The folding module FM may include a hinge part HG, a first support part SP1, a second support part SP2, a first shaft SF1, a second shaft SF2, a first secondary support part SS1, a second secondary support part SS2, a first guide part GD1, and a second guide part GD2.

[0084] The hinge section HG supports the folding area FA of the display panel DP. The hinge section HG provides a rotation axis RX for the first support section SP1 and the second support section SP2. The hinge section HG allows the first support section SP1 and the second support section SP2 to rotate around the rotation axis RX. With the rotation of the first support section SP1 and the second support section SP2, the display panel DP and the flat panel PL can be folded.

[0085] The rotation axis RX can include multiple rotation axes. For example, the rotation axis RX can be a two-axis rotation axis. The rotation axis RX can include a first rotation axis RX1 and a second rotation axis RX2. The first rotation axis RX1 can extend in a second direction DR2. The second rotation axis RX2 can extend in the second direction DR2 and is spaced apart from the first rotation axis RX1 in a first direction DR1. The first support portion SP1 and the second support portion SP2 can rotate about the rotation axis RX.

[0086] The hinge section HG may include a main body section BD, multiple first wings WP1, and multiple second wings WP2.

[0087] The main body BD can extend in the second direction DR2. When viewed in a plane, the main body BD can overlap with the folding area FA of the display panel DP. The main body BD can support the folding area FA of the display panel DP.

[0088] Each of the plurality of first wings WP1 can extend in a first direction DR1. The plurality of first wings WP1 can be configured to be spaced apart from the main body BD in a second direction DR2. The plurality of first wings WP1 can be rotatably coupled to the main body BD. The plurality of first wings WP1 can rotate about a first rotation axis RX1. The plurality of first wings WP1 can be coupled to a first support SP1. For example, the first support SP1 and the plurality of first wings WP1 can be coupled by at least one screw SW.

[0089] Each of the plurality of second wings WP2 can extend in a first direction DR1. The plurality of second wings WP2 can be arranged with the main body BD positioned between them in a second direction DR2. The plurality of first wings WP1 and the plurality of second wings WP2 can be arranged in the first direction DR1 respectively. The plurality of second wings WP2 can be rotatably coupled to the main body BD. The plurality of second wings WP2 can rotate about a second rotation axis RX2. The plurality of second wings WP2 can be coupled to a second support SP2. For example, the second support SP2 and the plurality of second wings WP2 can be coupled by at least one screw SW.

[0090] The first support portion SP1 can be coupled to the flat plate PL. The first support portion SP1 can be coupled to the hinge portion HG. The first support portion SP1 can support the first non-folding area NFA1 of the display panel DP. When viewed on a flat surface, the first support portion SP1 can overlap with the first non-folding area NFA1 of the display panel DP. The first support portion SP1 can rotate relative to the hinge portion HG about the first rotation axis RX1.

[0091] The second support portion SP2 can be coupled to the flat panel PL. The second support portion SP2 can be coupled to the hinge portion HG. The second support portion SP2 and the first support portion SP1 can be separated from the hinge portion HG in the first direction DR1. The second support portion SP2 can support the second non-folding area NFA2 of the display panel DP. When viewed in a plane, the second support portion SP2 can overlap with the second non-folding area NFA2 of the display panel DP. The second support portion SP2 can rotate relative to the hinge portion HG about the second rotation axis RX2.

[0092] The first shaft SF1 can be coupled to the first support SP1 and extend in the second direction DR2. The second shaft SF2 can be coupled to the second support SP2 and extend in the second direction DR2.

[0093] A first secondary support portion SS1 can be disposed between a first support portion SP1 and a main body portion BD. The first secondary support portion SS1 may define a first through-hole HL1 extending in a second direction DR2. A first shaft SF1 may be disposed through the first through-hole HL1. The first secondary support portion SS1 may be rotatably coupled to the first shaft SF1. The first secondary support portion SS1 may contact the flat plate PL. The first secondary support portion SS1 may support a first curved region BA1 of the display panel DP. When viewed in a plane, the first secondary support portion SS1 may overlap with the first curved region BA1 of the display panel DP.

[0094] The second sub-support SS2 can be disposed between the second support SP2 and the main body BD. The second sub-support SS2 may define a second through-hole HL2 extending in the second direction DR2. The second shaft SF2 may be disposed through the second through-hole HL2. The second sub-support SS2 may be rotatably coupled to the second shaft SF2. The second sub-support SS2 may contact the flat plate PL. The second sub-support SS2 may support the second curved region BA2 of the display panel DP. When viewed in a plane, the second sub-support SS2 may overlap with the second curved region BA2 of the display panel DP.

[0095] The first guide portion GD1 can be disposed below the first sub-support portion SS1. The first guide portion GD1 can be accommodated in the first receiving groove HM1 defined in the first support portion SP1. When viewed in a plane, the first guide portion GD1 can protrude from the first sub-support portion SS1 in the second direction DR2.

[0096] The second guide portion GD2 can be disposed below the second sub-support portion SS2. The second guide portion GD2 can be accommodated in the second receiving groove HM2 defined by the second support portion SP2. When viewed in a plane, the second guide portion GD2 can protrude from the second sub-support portion SS2 in the second direction DR2.

[0097] Figure 5a According to an embodiment of the present invention, along Figure 3 The cross-sectional view taken from I-I'.

[0098] Reference Figure 5a In the unfolded display device DD, the display panel DP and the flat panel PL can be supported by the folding module FM.

[0099] The upper part BD-U of the main body BD can support the folded area FA of the display panel DP. The upper part SS1-U of the first sub-support part SS1 can support the first curved area BA1 of the display panel DP. The upper part SS2-U of the second sub-support part SS2 can support the second curved area BA2 of the display panel DP. The upper part SP1-U of the first support part SP1 can support the first non-folded area NFA1 of the display panel DP. The upper part SP2-U of the second support part SP2 can support the second non-folded area NFA2 of the display panel DP.

[0100] The upper surface BD-U of the main body BD, the upper surface SS1-U of the first secondary support SS1, the upper surface SS2-U of the second secondary support SS2, the upper surface SP1-U of the first support SP1, and the upper surface SP2-U of the second support SP2 can be provided as flat surfaces. The flat plate PL can contact the flat surfaces.

[0101] The flat panel PL can have a continuous shape. The flat panel PL can be continuously disposed under the first non-folded area NFA1, the second non-folded area NFA2, the folded area FA, the first curved area BA1, and the second curved area BA2 of the display panel DP.

[0102] According to the present invention, the folding module FM can support the display panel DP and the flat panel PL. The folding module FM can improve the flatness of the display panel DP and the flat panel PL. The main body BD can prevent the sagging of the folding area FA of the display panel DP. The sagging can be defined as the phenomenon that stress is applied to the folding area FA of the display panel DP as the display panel DP is repeatedly folded or unfolded, causing the folding area FA to sag downward. The folding area FA of the display panel DP can be supported by the main body BD to maintain flatness. Therefore, the shape deformation of the folding area FA of the display panel DP can be reduced in the unfolded state.

[0103] An internal space IS may be defined within the main body portion BD. An electronic module EM may be configured within the internal space IS. For example, the electronic module EM may include a camera module. However, this is exemplary, and the components configured in the internal space IS according to an embodiment of the present invention are not limited thereto. For example, components for facilitating the folding of the hinge portion HG may be configured within the internal space IS.

[0104] Figure 5b This is a cross-sectional view showing a folded display device according to an embodiment of the present invention.

[0105] Reference Figure 5b In the folded display device DD, the display panel DP and the flat panel PL can be folded by the folding module FM (see reference). Figure 4 Support.

[0106] The first non-folding area NFA1 of the display panel DP (refer to) Figure 5a ) and the second non-folded region NFA2 (refer to Figure 5a The distance DT between them can be less than the folded region FA (refer to...). Figure 5a The radius of curvature CR is twice that of the other two.

[0107] When the display device DD is folded, the first sub-support SS1 can rotate about the first axis SF1 toward the first support SP1. The second sub-support SS2 can rotate about the second axis SF2 toward the second support SP2. The first sub-support SS1 and the second sub-support SS2 can provide the first bending area BA1 of the display panel DP (refer to...). Figure 5a ), second bending region BA2 (refer to) Figure 5a ) and the folded area FA (refer to Figure 5a Each of these is a space that can be bent at a predetermined curvature.

[0108] Folded area FA (reference) Figure 5a The first point CV1 below ) can have a first curvature. The first curved region BA1 (refer to) Figure 5a The second point CV2-1 below the first curvature can have a second curvature smaller than the first curvature in the opposite direction to the first curvature. Second curvature region BA2 (refer to...) Figure 5a The third point CV2-2 below can have a third curvature less than the first curvature in the opposite direction. The first curved region BA1 with the second curvature (refer to) Figure 5a The shape of the second curved region BA2 with the third curvature (refer to) and the shape of the third curved region BA2 (refer to) Figure 5a The shape of ) can be symmetrical about the axis extending towards DR3 in a third direction.

[0109] The first curvature center of the first curvature can be separated from the first point CV1 in the direction from the flat panel PL towards the display panel DP. The second curvature center of the second curvature can be separated from the second point CV2-1 in the direction from the display panel DP towards the flat panel PL. The third curvature center of the third curvature can be separated from the third point CV2-2 in the direction from the display panel DP towards the flat panel PL.

[0110] It is possible that the first curvature center is closer to the top of the display panel DP than the bottom of the display panel DP, and the second curvature center and the third curvature center are closer to the bottom of the display panel DP than the top of the display panel DP.

[0111] With the first bending region BA1 (refer to) Figure 5a The first region of the overlapping flat plate PL can be subjected to a first force in the direction toward the display panel DP. The first region can have a second curvature in the direction toward the display panel DP by the first force. (Refer to the second curved region BA2). Figure 5a A second force can be applied to the upper part of the second region of the overlapping flat plate PL in the direction toward the display panel DP. The second region can have the third curvature in the direction toward the display panel DP by the second force.

[0112] According to the present invention, the first region and the second region of the flat plate PL can each provide force toward the display panel DP. First bending region BA1 (refer to...) Figure 5a The second curvature and the second bending region BA2 (refer to) Figure 5a The third curvature can be increased. Through the second curvature, the first tension can be provided in the first bending region BA1 (refer to...). Figure 5a Through the third curvature, the second tension can be provided in the second bending region BA2 (refer to...). Figure 5a The first and second tensions can alleviate the stress formed in the folded region FA (see reference). Figure 5a The first curvature of ) is applied to the folded region FA (refer to) Figure 5a Therefore, it is possible to reduce the tension applied to the folded area FA (refer to) in the folded state. Figure 5a The stress of ).

[0113] When the display panel DP is folded, the upper part BD-U of the main body BD can support the folded area FA of the display panel DP (see reference). Figure 5a Part of the display panel DP. The main body BD can contact the flat panel PL. The upper part SS1-U of the first sub-support SS1 can support a portion of the first curved area BA1 of the display panel DP. The upper part SS2-U of the second sub-support SS2 can support a portion of the second curved area BA2 of the display panel DP. The upper part SP1-U of the first support SP1 can support the first non-folded area NFA1 of the display panel DP. The upper part SP2-U of the second support SP2 can support the second non-folded area NFA2 of the display panel DP.

[0114] The first secondary support SS1 can rotate about the first axis SF1 in the direction toward the first support SP1 as the display panel DP and the flat panel PL are folded. The second secondary support SS2 can rotate about the second axis SF2 in the direction toward the second support SP2 as the display panel DP and the flat panel PL are folded.

[0115] The first secondary support SS1 and the second secondary support SS2 can be separated from the main body BD by a first gap GP in the third direction DR3.

[0116] According to the present invention, when an impact is applied to the display device DD from the outside, the main body BD can be separated from the first sub-support SS1, the second sub-support SS2, the first support SP1, and the second support SP2 by a first gap GP without colliding. This allows for a reduction in the folding module FM (see reference). Figure 5a The probability of deformation. Therefore, the display device DD can improve its durability against external impacts. The deformation may include a folding module FM (see reference). Figure 5a Damage to ) and the formation of folding module FM (refer to Figure 5a The shape deformation or folding of each component of the FM module (refer to) Figure 5a It cannot be deformed to the extent that it can be folded or unfolded.

[0117] Figure 6a According to an embodiment of the present invention, along Figure 3 The cross-sectional view taken from section II-II'. Figure 6b According to an embodiment of the present invention, along Figure 3 The cross-sectional view taken from section III-III'.

[0118] Reference Figure 6a as well as Figure 6b The first guide portion GD1 can be disposed below the first secondary support portion SS1. The first guide portion GD1 and the first secondary support portion SS1 can be provided as a single unit. The first guide portion GD1 can be accommodated in the first receiving groove HM1 defined by the first support portion SP1. The upper part GD1-U of the first guide portion GD1 can contact the lower part HM1-L defining the first receiving groove HM1. The lower part HM1-L defining the first receiving groove HM1 can prevent the first secondary support portion SS1 from protruding in the third direction DR3.

[0119] The second guide portion GD2 can be disposed below the second auxiliary support portion SS2. The second guide portion GD2 and the second auxiliary support portion SS2 can be provided as a single unit. The second guide portion GD2 can be accommodated in the second receiving groove HM2 defined by the second support portion SP2. The upper part GD2-U of the second guide portion GD2 can contact the lower part HM2-L defining the second receiving groove HM2. The lower part HM2-L defining the second receiving groove HM2 can prevent the second auxiliary support portion SS2 from protruding towards the third direction DR3.

[0120] According to the present invention, a flat surface can be provided under the flat plate PL by means of the first guide part GD1, the first sub-support part SS1, and the first support part SP1. A flat surface can also be provided under the flat plate PL by means of the second guide part GD2, the second sub-support part SS2, and the second support part SP2. The display panel DP can be supported by the first sub-support part SS1, the first support part SP1, the second sub-support part SS2, and the second support part SP2 to maintain its flatness. Therefore, the flatness of the display panel DP can be improved in the unfolded state.

[0121] The folding module FM may include a first spring SR1 and a second spring SR2. The first spring SR1 may be configured to be penetrated by a first shaft SF1. The first spring SR1 may include a first portion SR1-1 and a second portion SR1-2. The first portion SR1-1 may be coupled to a first sub-support SS1. The second portion SR1-2 may be coupled to the first support SP1. The first spring SR1 may have an elastic force in a third direction DR3. For example, the first spring SR1 may provide an elastic force to the first sub-support SS1 in the direction toward the display panel DP.

[0122] The second spring SR2 can be configured to be penetrated by the second shaft SF2. The second spring SR2 can include a first portion SR2-1 and a second portion SR2-2. The first portion SR2-1 can be attached to the second sub-support SS2. The second portion SR2-2 can be attached to the second support SP2. The second spring SR2 can have an elastic force in a third direction DR3. For example, the second spring SR2 can provide an elastic force to the second sub-support SS2 in the direction toward the display panel DP.

[0123] According to the present invention, the first spring SR1 can cause the upper surface SS1-U of the first secondary support SS1 to contact the flat plate PL. The first secondary support SS1 can support the display panel DP and the flat plate PL. The second spring SR2 can cause the upper surface SS2-U of the second secondary support SS2 to contact the flat plate PL. The second secondary support SS2 can support the display panel DP and the flat plate PL. The upper surface BD-U of the main body BD, the upper surface SS1-U of the first secondary support SS1, the upper surface SS2-U of the second secondary support SS2, the upper surface SP1-U of the first support SP1, and the upper surface SP2-U of the second support SP2 can be provided as flat surfaces. Therefore, the flatness of the display panel DP can be improved in the unfolded state.

[0124] Figure 7 This is a cross-sectional view showing a folded display device according to an embodiment of the present invention. In the description... Figure 7 At that time, targeting through Figure 5b The constituent elements described are labeled with the same reference numerals in the accompanying drawings, and the description of these elements is omitted.

[0125] Reference Figure 7 The display device DDA is foldable. A flat panel PLA can be disposed below the display panel DP. The flat panel PLA can support the display panel DP. The flat panel PLA may include a first flat panel PL1 and a second flat panel PL2. The first flat panel PL1 can be connected to a first bending region BA1 (see reference). Figure 5a ) and the first non-folded region NFA1 (refer to Figure 5a The second flat plate PL2 can overlap with the second curved region BA2 (refer to...). Figure 5a ) and the second non-folded region NFA2 (refer to Figure 5a Overlap. The folded area FA of the display panel DP (refer to...) Figure 5a It can be non-overlapping with the flat panel PLA. The display panel DP can contact the main body BD.

[0126] Folded area FA (reference) Figure 5a The area below can have a first curvature. The first curvature region BA1 (refer to...) Figure 5a Below the first curvature, there may be a second curvature smaller than the first curvature in the opposite direction. The second curvature region BA2 (refer to...) Figure 5a Below, it can have a third curvature less than the first curvature in the opposite direction. The first curved region BA1 (refer to) has the second curvature. Figure 5a The shape of the second curved region BA2 with the third curvature (refer to) and the shape of the third curved region BA2 (refer to) Figure 5a The shape of ) can be symmetrical about the axis extending towards DR3 in a third direction.

[0127] It is possible that the first curvature center of the first curvature is closer to the top of the display panel DP than the bottom of the display panel DP, and the second curvature center of the second curvature and the third curvature center of the third curvature are closer to the bottom of the display panel DP than the top of the display panel DP.

[0128] A first plate PL1 can provide a first force in the direction toward the display panel DP. The top surface of the first plate PL1 can have a second curvature in the direction toward the display panel DP through the first force. A second plate PL2 can provide a second force in the direction toward the display panel DP. The top surface of the second plate PL2 can have the third curvature in the direction toward the display panel DP through the second force.

[0129] According to the present invention, the first plate PL1 and the second plate PL2 can each provide force toward the display panel DP. The first bending region BA1 (refer to...) Figure 5a The second curvature and the second bending region BA2 (refer to) Figure 5a The third curvature can be increased. Through the second curvature, the first tension can be provided in the first bending region BA1 (refer to...). Figure 5a Through the third curvature, the second tension can be provided in the second bending region BA2 (refer to...). Figure 5a The first and second tensions can alleviate the stress formed in the folded region FA (see reference). Figure 5a The first curvature of ) is applied to the folded region FA (refer to) Figure 5a Therefore, it is possible to reduce the tension applied to the folded area FA (refer to) in the folded state. Figure 5a The stress of ).

[0130] Figure 8 This is a cross-sectional view showing a folded display device according to an embodiment of the present invention. In the description... Figure 8 At that time, targeting through Figure 5b The constituent elements described are labeled with the same reference numerals in the accompanying drawings, and the description of these elements is omitted.

[0131] Reference Figure 8 The display device DDb can be folded. The flat panel PLb can be configured below the display panel DP. The flat panel PLb can be configured in the first non-folding area NFA1 (see reference). Figure 5a ), second non-folded region NFA2 (refer to Figure 5a ), Folded area FA (refer to) Figure 5a ), first bending region BA1 (refer to) Figure 5a ) and the second bending region BA2 (refer to Figure 5aBelow this, the flat panel PLb can have a continuous shape. The flat panel PLb can support the display panel DP. In the folding area FA of the flat panel PLb and the display panel DP (refer to...) Figure 5a The overlapping areas can define multiple tank pH values.

[0132] According to the present invention, multiple grooves PH can reduce the rebound force generated when the display panel DP is bent. Therefore, by means of multiple grooves PH, a folding area FA of the display panel DP can be provided (see reference). Figure 5a The foldable display device DDb.

[0133] Figure 9 This is a cross-sectional view showing a folded display device according to an embodiment of the present invention. In the description... Figure 9 At that time, targeting through Figure 5b The constituent elements described are labeled with the same reference numerals in the accompanying drawings, and the description of these elements is omitted.

[0134] Reference Figure 9 The display device DDc is foldable. The main body BD1 can be disposed below the display panel DP and the flat panel PL. A first plane ST1, a support groove SH, and a second plane ST2 can be defined on the top of the main body BD1. The second plane ST2 can be separated from the first plane ST1 in a first direction DR1. The support groove SH can be disposed between the first plane ST1 and the second plane ST2. The support groove SH can be defined by recessing between the first plane ST1 and the second plane ST2.

[0135] The curvature of the support groove SH can correspond to the curvature of the flat plate PL.

[0136] According to the present invention, the folding area FA of the display panel DP can be controlled by the support groove SH of the main body BD1 (see reference). Figure 5a The radius of curvature of the display panel DP. The display panel DP can be bent along the shape of the support groove SH. The main body BD1 can guide the display panel DP and the flat plate PL so that the display panel DP can be folded in the folding area FA (see reference). Figure 5a Curvature folding that minimizes shape deformation.

[0137] Figure 10a This is a cross-sectional view of a portion of a display device according to an embodiment of the present invention. Figure 10b This is according to an embodiment of the present invention. Figure 10a A cross-sectional view of the display device being folded. (In the description) Figure 10a as well as Figure 10b At that time, targeting through Figure 5a as well as Figure 5b The constituent elements described are labeled with the same reference numerals in the accompanying drawings, and the description of these elements is omitted.

[0138] Reference Figure 10a as well as Figure 10b The first support portion SP1-1 may include a first upper support portion SP1-T, a first lower support portion SP1-B, a first protrusion PU1, and a first elastic portion EU1.

[0139] The first upper support portion SP1-T can be disposed on the first lower support portion SP1-B. The first upper support portion SP1-T can be slidably coupled to the first lower support portion SP1-B. The display panel DP and the flat panel PL can be disposed on the first upper support portion SP1-T.

[0140] The first lower support portion SP1-B can be defined by a first opening portion OP1.

[0141] The first protrusion PU1 can be disposed on the first opening OP1. The first protrusion PU1 can protrude from the first upper support SP1-T toward the third direction DR3. The first protrusion PU1 and the first upper support SP1-T can be provided as a single unit.

[0142] The first elastic portion EU1 can be disposed in the first opening OP1. The first elastic portion EU1 can be disposed between the side wall SP1-BS of the first lower support portion SP1-B and the first protrusion PU1. One side of the first elastic portion EU1 can be coupled to the side wall SP1-BS of the first lower support portion SP1-B. The other side of the first elastic portion EU1 can be coupled to one side of the first protrusion PU1. The first elastic portion EU1 can provide elastic force to the first upper support portion SP1-T and the first lower support portion SP1-B.

[0143] When the display device DDd is unfolded, the first elastic part EU1 can provide force in the first elastic direction DR-EU1. The first elastic direction DR-EU1 can be parallel to the first direction DR1. The first protrusion PU1 can move in the first elastic direction DR-EU1. The first upper support part SP1-T can be engaged with the first protrusion PU1 and slide in the first elastic direction DR-EU1.

[0144] According to the present invention, the first elastic portion EU1 can apply a force in the first elastic direction DR-EU1 to the first upper support portion SP1-T. The first upper support portion SP1-T can move away from the main body portion BD. The force can be provided in the first elastic direction DR-EU1 to the folding area FA of the display panel DP that is coupled with the first upper support portion SP1-T (see reference). Figure 5a When the display device DDd is unfolded, the display panel DP can be subjected to forces by the first elastic part EU1 and the second elastic part EU2 in a direction that moves them away from each other. This improves the folding area FA of the display panel DP (see reference). Figure 5aThis reduces the sagging phenomenon of the display panel DP in the unfolded state. Therefore, it is possible to reduce the folding area FA (refer to...) of the display panel DP in the unfolded state. Figure 5a The shape of the shape is deformed.

[0145] The second support portion SP2-1, which is spaced apart from the first support portion SP1-1 in the first direction DR1, can be provided with a shape symmetrical to the first support portion SP1-1. A second opening OP2 can be defined in the second lower support portion SP2-B.

[0146] When the display device DDd is folded, the first elastic portion EU1 and the second elastic portion EU2 can provide force in the second elastic direction DR-EU2. The second elastic direction DR-EU2 can be parallel to the third elastic direction DR3. The first protrusion PU1 and the second protrusion PU2 can move in the second elastic direction DR-EU2. The first upper support portion SP1-T can be engaged with the first protrusion PU1 and slide in the second elastic direction DR-EU2. The second upper support portion SP2-T can be engaged with the second protrusion PU2 and slide in the second elastic direction DR-EU2.

[0147] According to the present invention, the first elastic part EU1 can apply a force to the first upper support part SP1-T in the second elastic direction DR-EU2, and the second elastic part EU2 can apply a force to the second upper support part SP2-T in the second elastic direction DR-EU2. When the display device DDd is folded, the display panel DP can be subjected to a force by the first elastic part EU1 and the second elastic part EU2 in the direction closer to the main body part BD. This can reduce the force applied to the folding area FA of the display panel DP (see reference). Figure 5a Therefore, it is possible to reduce the tension applied to the folded area FA (refer to) in the folded state. Figure 5a The stress of ).

[0148] Although the present invention has been described above with reference to preferred embodiments, those skilled in the art or those with ordinary knowledge in the art will understand that various modifications and alterations can be made to the present invention without departing from the concept and scope of the invention as set forth in the claims. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description but should be determined by the claims.

Claims

1. A display device, wherein, include: The display panel includes: a first non-foldable area; a second non-foldable area spaced apart from the first non-foldable area in a first direction; a foldable area disposed between the first non-foldable area and the second non-foldable area; a first curved area disposed between the foldable area and the first non-foldable area; and a second curved area disposed between the foldable area and the second non-foldable area. A flat panel, configured below the display panel; and A folding module, positioned beneath the flat panel, supports the display panel. The folding module includes: The hinge section supports the folding area; A first support portion supports the first non-folding area and is combined with the hinge portion; The second support portion supports the second non-folding area and is combined with the hinge portion; A first secondary support portion supports the first curved region and rotates in conjunction with the first support portion; and The second secondary support supports the second curved area and rotates in conjunction with the second support. The hinge portion includes a main body portion extending in a second direction intersecting the first direction. At least a portion of the flat plate is exposed in the first direction between the first secondary support and the main body when folded. In the folded state, the distance between the main body and the first support is greater than the distance between the main body and the first secondary support. In the unfolded state, the main body supports the folded area of ​​the display panel. In the folded state, the main body is separated from the first support, the second support, the first secondary support, and the second secondary support. The folding module further includes: a first guide portion disposed below the first sub-support portion; and a second guide portion disposed below the second sub-support portion. The first support portion defines a first receiving groove for accommodating the first guide portion, and the second support portion defines a second receiving groove for accommodating the second guide portion.

2. The display device according to claim 1, wherein, When the display device is folded, the distance between the first non-folded area and the second non-folded area of ​​the display panel is less than twice the radius of curvature of the folded area.

3. The display device according to claim 1, wherein, The first and second auxiliary support portions are in contact with the plate. The first support portion and the second support portion are combined with the plate.

4. The display device according to claim 1, wherein, The hinge portion also includes: Multiple first wings, rotatably coupled to the main body; and Multiple second wings are rotatably coupled to the main body. The plurality of first wings are coupled to the first support portion, and the plurality of second wings are coupled to the second support portion.

5. The display device according to claim 4, wherein, The main body defines an internal space, and the display device further includes an electronic module disposed in the internal space.

6. The display device according to claim 4, wherein, When the display device is folded, the main body comes into contact with the flat panel.

7. The display device according to claim 4, wherein, A first plane and a second plane, separated from the first plane and directed in the first direction, are defined on the upper part of the main body. And a support groove, which is recessed between the first plane and the second plane.

8. The display device according to claim 1, wherein, The folding module further includes: a first shaft, which is coupled to the first support portion and passes through the first secondary support portion; and a second shaft, which is coupled to the second support portion and passes through the second secondary support portion.

9. The display device according to claim 8, wherein, The folding module further includes: a first spring configured to be penetrated by the first shaft and coupled to the first support portion and the first secondary support portion; and a second spring configured to be penetrated by the second shaft and coupled to the second support portion and the second secondary support portion.

10. The display device according to claim 1, wherein, When viewed on a plane, the first guide portion protrudes from the first secondary support portion in a second direction intersecting the first direction, and the second guide portion protrudes from the second secondary support portion in the second direction.

11. The display device according to claim 1, wherein, The plate includes: a first plate disposed below the first curved region and the first non-folded region; and a second plate disposed below the second curved region and the second non-folded region, and spaced apart from the first plate in the first direction.

12. The display device according to claim 1, wherein, The flat plate is disposed below the first non-folded region, the second non-folded region, the folded region, the first curved region, and the second curved region, and the flat plate has a continuous shape.

13. The display device according to claim 1, wherein, When viewed on a flat surface, multiple grooves are defined in the portion of the flat plate that overlaps with the folded area.

14. The display device according to claim 1, wherein, When the display device is folded, the folded area has a first curvature, and the first curved area and the second curved area each have a second curvature smaller than the first curvature in the opposite direction to the first curvature.

15. The display device according to claim 1, wherein, The first support portion includes: a first lower support portion defining a first opening; a first upper support portion disposed on the first lower support portion and slidably coupled to the first lower support portion; and a first elastic portion disposed in the first opening.

16. A display device, wherein, include: The display panel can be folded or unfolded. A flat panel is positioned below the display panel; A hinge portion is disposed below the flat plate and includes a main body portion; The first support portion is disposed below the plate and is attached to one side of the hinge portion; The second support portion is disposed below the plate and is connected to the other side of the hinge portion; A first secondary support portion is disposed between the first support portion and the hinge portion; A second auxiliary support is disposed between the second support and the hinge portion; The first guide portion is disposed below the first secondary support portion; as well as The second guide section is located below the second auxiliary support section. When the display panel is unfolded, the top surfaces of the hinge portion, the first support portion, the second support portion, the first secondary support portion, and the second secondary support portion are provided with flat surfaces. At least a portion of the flat plate is exposed between the first secondary support and the main body in the folded state. In the folded state, the distance between the main body and the first support is greater than the distance between the main body and the first secondary support. In the unfolded state, the main body supports the folding area of ​​the display panel. In the folded state, the main body is separated from the first support portion, the second support portion, the first secondary support portion, and the second secondary support portion. The first support portion defines a first receiving groove for accommodating the first guide portion, and the second support portion defines a second receiving groove for accommodating the second guide portion.

17. The display device according to claim 16, wherein, The plate is combined with the first support portion and the second support portion. The plate contacts the hinge portion, the first secondary support portion, and the second secondary support portion.

18. The display device according to claim 16, wherein, When the display panel is folded, the hinge portion is separated from the first secondary support portion and the second secondary support portion.

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