Display device

Abstract

According to an exemplary embodiment of the present disclosure, a display device includes: a display panel; a roller, the display panel is wound around or unwound from the roller; a housing unit, which accommodates the display panel and the roller; a head rod, which is connected to one end of the display panel; and a supporting plate, which supports the rear surface of the display panel, has one side fixed to the head rod and the other side fixed to the housing unit, and forms a mesh pattern.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the priority of Korean Patent Application No. 10-2020-0110640 filed on August 31, 2020 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference. Technical Field

[0003] The present disclosure relates to a display device, and more particularly, to a rollable display device capable of supporting a display panel. Background Art

[0004] As display devices for monitors of computers, televisions, or cellular phones, there are organic light emitting display devices (OLEDs) that are self-light emitting devices and liquid crystal display devices (LCDs) that require a separate light source.

[0005] The application range of the display device is diversified to personal digital assistants as well as monitors of computers and televisions, and display devices having a large display area and reduced volume and weight are being studied.

[0006] Furthermore, recently, a rollable display device has attracted attention as a next-generation display device, which is manufactured to be able to display an image even if the display device is rolled up by forming a display unit and wiring on a flexible substrate such as plastic as a flexible material. Summary of the invention

[0007] An object to be achieved by the present disclosure is to provide a display device provided with a structure that supports a display panel to minimize a problem that the display panel is not supported when the display panel is wound or unfolded.

[0008] Another object to be achieved by the present disclosure is to provide a display device which can minimize the distortion of a display panel by means of a support plate when the display device is unfolded.

[0009] The objects of the present disclosure are not limited to the above-mentioned objects, and other objects not mentioned above can be clearly understood by those skilled in the art through the following description.

[0010] According to one aspect of the present disclosure, a display device includes: a display panel; a roller, the display panel is wound around or unwound from the roller; a housing unit, which accommodates the display panel and the roller; a head rod, which is connected to one end of the display panel; and a support plate, which supports the rear surface of the display panel, has one side fixed to the head rod and the other side fixed to the housing unit, and forms a mesh pattern.

[0011] According to another aspect of the present disclosure, a display device includes: a display panel that displays an image; a back cover that is disposed on the rear surface of the display panel; a roller around which the back cover and the display panel are wound or unrolled; a head rod that is fastened to the back cover; a shell unit that accommodates the display panel, the back cover and the roller; and a supporting plate that is fastened to the head rod and the shell unit to support the rear surface of the display panel and the rear surface of the back cover.

[0012] Additional details of exemplary embodiments are included in the detailed description and the accompanying drawings.

[0013] According to the present disclosure, a support plate is disposed on a rear surface of a display panel to suppress bending of the display panel when the display panel is unfolded.

[0014] According to the present disclosure, distortion of a support plate is reduced to fix the unfolded display panel to be flat.

[0015] According to a preferred embodiment of the present disclosure, when the display panel is wound, the bent shape of the support plate can be guided to suppress the support plate from being irregularly bent.

[0016] The effects according to the present disclosure are not limited to the above-exemplified contents, and more various effects are included in the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other aspects, features and other advantages of the present disclosure will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0018] Figure 1A and Figure 1B is a schematic perspective view of a display device according to an exemplary embodiment of the present disclosure;

[0019] Figure 2 is a perspective view of a display device according to an exemplary embodiment of the present disclosure;

[0020] Figure 3 is a plan view of a display unit of a display device according to an exemplary embodiment of the present disclosure;

[0021] Figure 4 yes Figure 3 A cross-sectional view of the display unit shown;

[0022] Figure 5 is a perspective view of a display device according to another exemplary embodiment of the present disclosure;

[0023] Figure 6 yes Figure 5 an enlarged plan view of a second panel of the display device shown;

[0024] Figure 7is a perspective view of a display device according to still another exemplary embodiment of the present disclosure;

[0025] Figure 8 is a perspective view of a display device according to still another exemplary embodiment of the present disclosure;

[0026] Fig. 9 Among them Figure 8 A cross-sectional view of a display device in which the display panel is completely wrapped; and

[0027] Fig. 10A and Fig. 10B is a perspective view of a display device according to still another exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0028] By referring to the exemplary embodiments described in detail below in conjunction with the accompanying drawings, the advantages and features of the present disclosure and the methods for achieving these advantages and features will be clear. However, the present disclosure is not limited to the exemplary embodiments disclosed herein, but will be implemented in various forms. Exemplary embodiments are provided only by way of example so that those skilled in the art can fully understand the disclosure of the present disclosure and the scope of the present disclosure. Therefore, the present disclosure will only be limited by the scope of the appended claims.

[0029] The shapes, sizes, ratios, angles, quantities, etc. shown in the drawings used to describe the exemplary embodiments of the present disclosure are merely examples, and the present disclosure is not limited thereto. Throughout the specification, similar reference numerals generally represent similar elements. In addition, in the following description of the present disclosure, detailed descriptions of known related technologies may be omitted to avoid unnecessarily obscuring the subject matter of the present disclosure. Terms such as "including", "having" and "consisting of..." used in this article are generally intended to allow the addition of other components unless these terms are used together with the term "only". Any reference to the singular may include the plural, unless otherwise expressly provided.

[0030] Parts are interpreted as including ordinary error ranges even if not expressly stated.

[0031] When terms such as "on", "over", "below" and "adjacent" are used to describe the positional relationship between two parts, unless these terms are used with the term "immediately" or "directly", one or more parts may be located between the two parts.

[0032] When an element or layer is referred to as being “on” another element or layer, the other layer or element may be directly on the other element or interposed therebetween.

[0033] Although the terms "first", "second", etc. are used to describe various components, these components are not limited by these terms. These terms are only used to distinguish one component from other components. Therefore, the first component mentioned below can be the second component in the technical concept of the present disclosure.

[0034] Like reference numerals generally refer to like elements throughout the specification.

[0035] The size and thickness of each component shown in the drawings are illustrated for convenience of description, and the present disclosure is not limited to the size and thickness of the components shown.

[0036] The features of the various embodiments of the present disclosure may be partially or completely adhered to or combined with each other and may be interlocked and operated in various technically different ways, and the embodiments may be implemented independently of each other or in association with each other.

[0037] Hereinafter, a display device according to exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0038] <Display device-rollable display device>

[0039] A rollable display device may also be referred to as a display device that can display an image even if the display device is rolled up. Compared with a general display device of the related art, a rollable display device may have high flexibility. The shape of the rollable display device may be freely changed depending on whether the rollable display device is to be used. Specifically, when the rollable display device is not used, the rollable display device is rolled up for storage in a reduced volume. In contrast, when the rollable display device is used, the rolled-up display device is unfolded for use.

[0040] Figure 1A and Figure 1B is a perspective view of a display device according to an exemplary embodiment of the present disclosure.

[0041] Reference Figure 1A and Figure 1B , a display device 100 according to an exemplary embodiment of the present disclosure includes a display unit DP and a housing unit HP (which may also be referred to as a housing HP).

[0042] The display unit DP is a configuration for displaying an image to a user, and, for example, a display element and a circuit, wiring, and components for driving the display element may be provided in the display unit DP. In this case, since the display device 100 according to the exemplary embodiment of the present disclosure is a rollable display device 100, the display unit DP may be configured to be wound and unfolded. For example, the display unit DP may be formed of a display panel and a back cover, both of which have flexibility to be wound or unfolded. Figure 3 and Figure 4 The display unit DP is described in more detail.

[0043] The housing unit HP is a box in which the display unit DP is accommodated. The display unit DP may be wound to be accommodated in the housing unit HP, and the display unit DP may be unfolded to be disposed outside the housing unit HP.

[0044] The housing unit HP has an opening HPO through which the display unit DP moves to the inside and outside of the housing unit HP. The display unit DP may move by passing through the opening HPO of the housing unit HP.

[0045] Meanwhile, the display unit DP of the display device 100 may be switched from the fully unfolded state to the fully wound state or from the fully wound state to the fully unfolded state.

[0046] Figure 1A The fully unfolded display unit DP of the display device 100 is shown, and in the fully unfolded state, the display unit DP of the display device 100 is disposed outside the housing unit HP. That is, in order for the user to view an image through the display device 100, when the display unit DP is unfolded to be disposed as far as possible outside the housing unit HP and cannot be unfolded further, it can be defined as the fully unfolded state.

[0047] Figure 1B A fully wound display unit DP of the display device 100 is shown, and in the fully wound state, the display unit DP of the display device 100 is accommodated in the housing unit HP and cannot be further wound. That is, when the user does not view an image through the display device 100, it is advantageous from the viewpoint of appearance that the display unit DP is not disposed outside the housing unit HP. Therefore, when the display unit DP is wound to be accommodated in the housing unit HP, it is defined as a fully wound state. In addition, when the display unit DP is in a fully wound state to be accommodated in the housing unit HP, the volume of the display device 100 is reduced and the display device 100 can be easily carried.

[0048] In addition, the display unit DP of the display device 100 may be switched from a fully wound state to a partially unfolded state. The partially unfolded state of the display unit DP may be defined as a state in which a portion of the display unit DP is disposed outside the housing unit HP.

[0049] Figure 2 is a perspective view of a display device according to an exemplary embodiment of the present disclosure.

[0050] Reference Figure 2 The display device 100 includes a display unit DP, a housing unit HP, a head bar HB, a roller unit 150 and a support plate 160.

[0051] The head bar HB covers only a portion of the surface of the display unit DP adjacent to the uppermost edge of the display unit DP so as not to hide the image displayed on the front surface of the display unit DP. The display unit DP and the head bar HB may be fixed by screws, adhesives, etc., but are not limited thereto.

[0052] The roller 151 is accommodated in the housing unit HP so that the display unit DP can be wound or unfolded. Specifically, the roller 151 is accommodated in the housing unit HP so that the lower edge of the display unit DP is fixed to a portion of the roller 151, and the roller 151 rotates in a clockwise direction or a counterclockwise direction to wind or unfold the display unit DP. For example, when the roller 151 rotates, the display unit DP can be wound with the opposite surface of the surface of the display screen in close contact with the surface of the roller 151. In contrast, when the roller 151 rotates in the opposite direction, the display unit DP wound around the roller 151 can be unfolded from the roller 151 to be set outside the housing unit HP.

[0053] The display device 100 according to an exemplary embodiment of the present disclosure is a manually driven rollable display device in which the winding or unfolding operation is directly performed by the user using the hand. Specifically, in the display device 100, the user pulls the head bar HB from the housing unit HP so that the display unit DP is stretched. Therefore, when the user pulls the head bar HB from the housing unit HP, the display unit DP can be unfolded from the roller 151, and when the user releases the head bar HB, the display unit DP can be fixed to be wound around the roller 151 or unfolded from the roller 151. That is, the display device 100 according to the exemplary embodiment of the present disclosure does not include a separate driving unit for mechanically winding or unfolding the display unit DP.

[0054] In addition, the roller 151 may be more easily wrapped around the display unit DP using an elastic member.

[0055] Specifically, the elastic member is provided in the housing unit HP. Therefore, when the roller 151 rotates to unfold the display unit DP, the elastic member is compressed, and when the rotational force of the roller 151 is released, the elastic member rotates the roller 151 in the opposite direction using the elastic force to wind the display unit DP around the roller 151. At this time, the rotational force of the roller 151 for unfolding the display unit DP is applied to the display unit DP unfolded from the roller 151 by the elastic force of the elastic member, and therefore, the display unit DP exposed to the outside of the housing unit HP can maintain a flat state. The elastic member may be a coil spring, but is not limited thereto.

[0056] The roller supporting unit 152 supports the roller 151 at both ends of the roller 151. Specifically, the roller supporting unit 152 is disposed on the bottom surface of the housing unit HP. In addition, the upper side surface of the roller supporting unit 152 is coupled to both ends of the roller 151. By doing so, the roller supporting unit 152 can support the roller 151 to be spaced apart from the bottom surface of the housing unit HP. In this case, the roller 151 can be rotatably coupled to the roller supporting unit 152.

[0057] At the same time, despite Figure 2 , the roller 151 is shown to have a cylindrical shape having a circular cross-section, but the roller 151 may also have a cylindrical shape in which at least a portion of the outer circumferential surface of the roller 151 is flat and the rest of the outer circumferential surface is curved. That is, a portion of the outer circumferential surface of the roller 151 is formed to be flat, and the rest of the outer circumferential surface may be formed to be curved.

[0058] In addition, in some exemplary embodiments, the roller 151 may include a base and a top cover. For example, the base and the top cover are formed to have a semicircular cross-section, so that when the base and the top cover are coupled, the roller 151 may have a cylindrical shape.

[0059] Furthermore, in some exemplary embodiments, the display device 100 may further include a fixing tool which fixes the fully extended state of the display unit DP when the display unit DP is fully extended.

[0060] In addition, although the display device 100 described above has a housing unit and a head bar, the housing unit and the head bar may be optional elements of the display device, as long as one side of the support plate can be coupled to the display panel and the other side of the support plate can be coupled to the roller. For example, the head bar may be omitted, and the uppermost end of the support plate may be formed with a protrusion that is fixed to the upper side of the display unit. Similarly, the housing unit may be omitted, and the roller support unit may be formed with a bottom surface in addition to the upper side surfaces coupled to both ends of the roller, and the bottom surface may support the roller and the display unit wrapped around the roller.

[0061] In the following, for the convenience of description, a display device having a housing unit and a head bar is described as an example, but the display device is not limited thereto. The housing unit and the head bar of the display device are both optional elements, and they can be omitted by appropriate configuration of the support plate and / or the roller.

[0062] In the following, we will refer to Figure 3 and Figure 4 The display unit DP is described in more detail.

[0063] <Display Unit>

[0064] Figure 3is a plan view of a display unit of a display device according to an exemplary embodiment of the present disclosure. Figure 4 is along Figure 3 A cross-sectional view taken along line IV-IV'.

[0065] Reference Figure 3 , the display device 100 (for example, see Figure 1A , Figure 1B or Figure 2 ) includes a back cover 110, a display panel 120, a flexible film 130 and a printed circuit board 140.

[0066] The back cover 110 is disposed on the rear surfaces of the display panel 120, the flexible film 130, and the printed circuit board 140 to support the display panel 120, the flexible film 130, and the printed circuit board 140. Therefore, the size of the back cover 110 may be larger than that of the display panel 120. That is, the outer edge of the back cover 110 may be disposed outside the corresponding outer edge of the display panel 120. Therefore, when the display unit DP is disposed on the housing unit HP (for example, referring to Figure 1A , Figure 1B or Figure 2 ), the back cover 110 may protect other configurations of the display unit DP from external impacts, specifically, protect the display panel 120 from external impacts.

[0067] Although the back cover 110 is formed of a material having rigidity, at least a portion of the back cover 110 may have flexibility to be wound or unfolded together with the display panel 120. For example, the back cover 110 may be formed of a metal material such as steel using stainless steel (Steel Use Stainless, SUS) or invar alloy or plastic. However, if the material of the back cover 110 satisfies physical conditions such as thermal strain amount, curvature radius and rigidity, the material may be varied in various ways and is not limited thereto.

[0068] The back cover 110 includes a fixed area FA, a support area PA, and an extensible area MA. Specifically, the back cover 110 includes a support area PA at the uppermost end, a fixed area FA at the lowermost end, and an extensible area MA between the support area PA and the fixed area FA. No opening 111 is provided in the support area PA, and the head bar HB (for example, referring to Figure 1A , Figure 1B or Figure 2 ) is fastened to the supporting area PA. A plurality of openings 111 are provided in the extensible area MA, and winding or unwinding is basically performed by the extensible area MA. The fixing area FA is the area where the back cover 110 is fixed to the roller 151 together with the printed circuit board 140 and the flexible film 130.

[0069] The support area PA of the back cover 110 is the uppermost area of ​​the back cover 110 and is fastened to the head bar HB. The support area PA may include a first fastening hole AH1 through which a screw passes to be fastened to the head bar HB. Therefore, the head bar HB may be fastened to the support area PA of the back cover 110. Figure 3 , nine first fastening holes AH1 are shown, but the number of the first fastening holes AH1 is not limited thereto. Figure 3 The first fastening hole AH1 in the back cover 110 fastens the head bar HB, but it is not limited thereto and the back cover 110 and the head bar HB may also be fastened to each other without using separate fastening holes.

[0070] The fixing area FA of the back cover 110 is the lowermost area of ​​the back cover 110 and is fastened to the roller 151. The fixing area FA may include a second fastening hole AH2 through which a screw passes to be fastened to the roller 151. Therefore, the roller 151 may be fastened to the fixing area FA of the back cover 110. In addition, since the fixing area FA is fastened to the roller 151, the back cover 110 may be wound around or unwound from the roller 151 by the rotation of the roller 151. At the same time, Figure 3 The number of the plurality of second fastening holes AH2 shown in FIG. 1 is illustrative, and the number of the plurality of second fastening holes AH2 may be determined based on the number of printed circuit boards 140 , the number of flexible films 130 , and the like.

[0071] In the fixing area FA, the printed circuit board 140 and the flexible film 130 connected to one end of the display panel 120 are arranged and fixed. Some second fastening holes AH2 through which the screws pass are provided between the flexible films 130 to more stably fix the flexible films 130. The portion of the roller 151 coupled to the fixing area FA may be formed to have a flat shape corresponding to the fixing area FA. For example, when the portion of the roller 151 coupled to the fixing area FA is formed to be flat, the flexible film 130 and the printed circuit board 140 arranged in the fixing area FA are also arranged to be flat at the roller 151, so that damage of the flexible film 130 and the printed circuit board 140 can be suppressed.

[0072] The stretchable area MA of the back cover 110 is an area that is wound around the roll 151 together with the display panel 120 or unwound from the roll 151. The stretchable area MA may overlap partial areas of the display panel 120 and the flexible film 130.

[0073] A plurality of openings 111 are provided in the stretchable region MA of the back cover 110. When the display unit DP is wound or unfolded, the plurality of openings 111 may be deformed due to stress applied to the display unit DP. Specifically, when the display unit DP is wound or unfolded, the stretchable region MA of the back cover 110 may be deformed as the plurality of openings 111 shrink or expand. In addition, as the plurality of openings 111 shrink or expand, a sliding phenomenon of the display panel 120 provided on the stretchable region MA of the back cover 110 is minimized, so that the stress applied to the display panel 120 may be minimized.

[0074] At the same time, in the supporting area PA and the fixing area FA, the multiple openings 111 formed in the extensible area MA are not formed. That is, in the supporting area PA and the fixing area FA, only the first fastening hole AH1 and the second fastening hole AH2 are formed, and the multiple openings 111 formed in the extensible area MA are not formed. In addition, the first fastening hole AH1 and the second fastening hole AH2 may have a shape different from the shape of the multiple openings 111. The supporting area PA and the fixing area FA, which are respectively fixed to the head bar HB and the roller 151, need to be more rigid than the extensible area MA. Specifically, since the supporting area PA and the fixing area FA have rigidity, the supporting area PA and the fixing area FA can be firmly fixed to the head bar HB and the roller 151. Therefore, the display unit DP is fixed to the head bar HB and the roller 151 to move to the inside or outside of the housing unit HP according to the operation of the head bar HB and the roller 151.

[0075] Reference Figure 3 The extensible area MA may include a first extensible area MA1 extending from the supporting area PA and a second extensible area MA2 between the first extensible area MA1 and the fixing area FA.

[0076] The first extensible area MA1 is an area where a plurality of openings are provided and to which the display panel 120 is attached. The second extensible area MA2 is an area extending from the first extensible area MA1 to the fixing area FA. In the second extensible area MA2, a plurality of openings 111 are provided, but the display panel 120 is not provided. In addition, in the second extensible area MA2, at least a portion of the flexible film 130 extending from the display panel 120 to the printed circuit board 140 is provided.

[0077] The second stretchable area MA2 extends to set the display area AA of the display panel 120 outside the housing unit HP. For example, when the back cover 110 and the display panel 120 are fully unfolded, the fixing area FA to which the printed circuit board 140 is attached to be fixed to the roller 151 and the second stretchable area MA2 to which the flexible film 130 is attached can be set in the housing unit HP, and the first stretchable area MA1 and the support area PA to which the display panel 120 is attached can be set outside the housing unit HP. In this case, when the length from the fixing area FA fixed to the roller 151 to the second stretchable area MA2 is less than the opening HPO from the fixing area FA to the housing unit HP (for example, refer to Figure 1A , Figure 1B or Figure 2 ), a portion of the first extensible area MA1 to which the display panel 120 is attached may be disposed in the housing unit HP. Therefore, since a portion of the lower end of the display area AA of the display panel 120 is disposed in the housing unit HP, it may be difficult to view the image. Therefore, the length from the fixing area FA fixed to the roller 151 to the second extensible area MA2 may be designed to be equal to the length from the fixing area FA fixed to the roller 151 to the opening HPO of the housing unit HP.

[0078] The display panel 120 is a panel for displaying an image to a user, and may include a display element for displaying an image, a driving element for driving the display element, and wiring for transmitting various signals to the display element and the driving element.

[0079] The display element may be defined in different ways depending on the type of the display panel 120. For example, when the display panel 120 is an organic light-emitting display panel, the display element may be an organic light-emitting diode including an anode, an organic light-emitting layer, and a cathode. For example, when the display panel 120 is a liquid crystal display panel, the display element may be a liquid crystal display element. In addition, when the display panel 120 is a light-emitting display panel including an LED, the display element may be an LED. In the following, although it is assumed that the display panel 120 is an organic light-emitting display panel, the display panel 120 is not limited to an organic light-emitting display panel. In addition, since the display device 100 according to the exemplary embodiment of the present disclosure is a rollable display device, the display panel 120 may be implemented as a flexible display panel to be wound around the roller 151 or unfolded from the roller 151.

[0080] Reference Figure 3 , the display panel 120 includes a display area AA and a non-display area NA.

[0081] The display area AA is an area in the display panel 120 where an image is displayed. In the display area AA, a plurality of sub-pixels for configuring a plurality of pixels and a driving circuit for driving the plurality of sub-pixels may be provided. The plurality of sub-pixels are the minimum units for configuring the display area AA, and a display element may be provided in each of the plurality of sub-pixels. For example, an organic light emitting diode including an anode, an organic light emitting layer, and a cathode may be provided in each of the plurality of sub-pixels, but is not limited thereto. In addition, a circuit for driving the plurality of sub-pixels may include a driving element, wiring, and the like. For example, the circuit may be configured by a thin film transistor, a storage capacitor, a gate line, a data line, and the like, but is not limited thereto.

[0082] The non-display area NA is an area where no image is displayed. The non-display area NA is arranged to surround the periphery of the display area AA. In the non-display area NA, various wirings and circuits for driving the organic light emitting diodes of the display area AA are arranged. For example, in the non-display area NA, link lines for transmitting signals to a plurality of sub-pixels and circuits of the display area AA, or a driver IC such as a gate driver IC or a data driver IC may be arranged, but the non-display area is not limited thereto.

[0083] The flexible film 130 is a film in which various components are disposed on a base film having ductility. The flexible film 130 has ductility so that a partial area can be wound around the roller 151 or unrolled from the roller 151 together with the second extensible area MA2. The flexible film 130 provides signals to a plurality of sub-pixels and circuits of the display area AA and is electrically connected to the display panel 120. The flexible film 130 is disposed at one end of the non-display area NA of the display panel 120 to provide a power supply voltage, a data voltage, etc. to a plurality of sub-pixels and circuits of the display area AA. Figure 3 The number of flexible films 130 shown in FIG. 1 is illustrative, and the number of flexible films 130 may vary according to design, but is not limited thereto.

[0084] Meanwhile, for example, a driver IC such as a gate driver IC or a data driver IC may also be disposed on the flexible film 130. The driver IC is a component that processes data for displaying an image and a drive signal for processing the data. Depending on the mounting method, the driver IC may be disposed by a chip on glass (COG), a chip on film (COF), or a tape carrier package (TCP) technology. However, for ease of description, it is described that the driver IC is mounted on the flexible film 130 by a chip on film method, but is not limited thereto.

[0085] The printed circuit board 140 is disposed at one end of the flexible film 130 to be connected to the flexible film 130. The printed circuit board 140 is a component that provides a signal to the driver IC. The printed circuit board 140 provides various signals such as a driving signal or a data signal to the driver IC. Various components may be provided on the printed circuit board 140. For example, a timing controller, a power supply unit, etc. may be provided on the printed circuit board 140. Although Figure 3 One printed circuit board 140 is shown in FIG. 1 , but the number of printed circuit boards 140 may vary according to design and is not limited thereto.

[0086] Reference Figure 4 The display panel 120 includes a substrate 121 , a buffer layer 122 , a pixel unit 123 , an encapsulation layer 124 and an encapsulation substrate 125 .

[0087] The substrate 121 is a base member supporting various components of the display panel 120 and may be configured of an insulating material. The substrate 121 may be formed of a material having flexibility so that the display panel 120 can be wound or unwound, and may be formed of, for example, a plastic material such as polyimide (PI).

[0088] The buffer layer 122 may suppress diffusion of moisture and / or oxygen infiltrated from the outside of the substrate 121. The buffer layer 122 may be configured of a double layer or a single layer of silicon oxide SiOx and silicon nitride SiNx, but is not limited thereto.

[0089] The pixel unit 123 includes a plurality of organic light emitting diodes and a circuit for driving the plurality of organic light emitting diodes. The pixel unit 123 may be a region corresponding to the display area AA. The organic light emitting diode may include an anode, an organic light emitting layer, and a cathode.

[0090] The anode may provide holes to the organic light emitting layer and may be formed of a conductive material having a high work function. For example, the anode may be formed of tin oxide (TO), indium tin oxide (ITO), indium zinc oxide (IZO), or indium zinc tin oxide (ITZO), but is not limited thereto.

[0091] The organic light emitting layer is provided with holes from the anode and electrons from the cathode to emit light. According to the color of the light emitted from the organic light emitting layer, the organic light emitting layer may be formed of a red organic light emitting layer, a green organic light emitting layer, a blue organic light emitting layer, a white organic light emitting layer, etc. In this case, when the organic light emitting layer is a white organic light emitting layer, a color filter having various colors may be additionally provided.

[0092] The cathode may provide electrons to the organic light emitting layer and may be formed of a conductive material having a low work function. For example, the cathode may be formed of any one or more selected from the group consisting of metals such as magnesium (Mg), silver (Ag) and aluminum (Al) and alloys thereof, but is not limited thereto.

[0093] Meanwhile, the display panel 120 may be configured in a top emission type or a bottom emission type according to an emission direction of light emitted from the organic light emitting diode.

[0094] According to the top emission type, light emitted from the organic light emitting diode is emitted to the upper portion of the substrate 121 on which the organic light emitting diode is formed. In the case of the top emission type, a reflective layer may be formed under the anode to allow light emitted from the organic light emitting diode to travel to the upper portion of the substrate 121, that is, toward the cathode.

[0095] According to the bottom emission type, light emitted from the organic light emitting diode is emitted to the lower portion of the substrate 121 on which the organic light emitting diode is formed. In the case of the bottom emission type, the anode may be formed of only a transparent conductive material, and the cathode may be formed of a metal material having a high reflectivity so that the light emitted from the organic light emitting diode can travel to the lower portion of the substrate 121.

[0096] Hereinafter, for convenience of description, description will be made by assuming that the display device 100 according to an exemplary embodiment of the present disclosure is a bottom emission type display device, but is not limited thereto.

[0097] A circuit for driving the organic light emitting diode is provided in the pixel unit 123. The circuit may be formed of a thin film transistor, a storage capacitor, a gate line, a data line, a power line, etc., but it may be changed in various forms according to the design of the display device 100.

[0098] The encapsulation layer 124 covering the pixel unit 123 is disposed on the pixel unit 123. The encapsulation layer 124 seals the organic light emitting diode of the pixel unit 123. The encapsulation layer 124 can protect the organic light emitting diode of the pixel unit 123 from external moisture, oxygen, impact, etc. The encapsulation layer 124 can be formed by alternately laminating a plurality of inorganic layers and a plurality of organic layers. For example, the inorganic layer can be formed of an inorganic material such as silicon nitride SiNx, silicon oxide SiOx, and aluminum oxide AlOx, and the organic layer can use epoxy resin or acrylic polymer, but it is not limited thereto.

[0099] The encapsulation substrate 125 is disposed on the encapsulation layer 124. The encapsulation substrate 125 protects the organic light emitting diode of the pixel unit 123 together with the encapsulation layer 124. The encapsulation substrate 125 can protect the organic light emitting diode of the pixel unit 123 from external moisture, oxygen, impact, etc. The encapsulation substrate 125 can be formed of a metal material having high corrosion resistance and easy to be processed in the form of a foil or a thin film, such as aluminum (Al), nickel (Ni), chromium (Cr), and an alloy material of iron (Fe) and nickel. Therefore, since the encapsulation substrate 125 is formed of a metal material, the encapsulation substrate 125 can be implemented as an ultra-thin film and provide strong resistance to external impacts and scratches.

[0100] A first adhesive layer AD1 may be provided between the encapsulation layer 124 and the encapsulation substrate 125. The first adhesive layer AD1 may bond the encapsulation layer 124 and the encapsulation substrate 125 to each other. The first adhesive layer AD1 is formed of a material having adhesiveness, and may be a thermosetting or naturally curing adhesive. For example, the first adhesive layer AD1 may be formed of an optically clear adhesive (OCA), a pressure sensitive adhesive (PSA), etc., but is not limited thereto.

[0101] At the same time, the first adhesive layer AD1 may be arranged to surround the encapsulation layer 124 and the pixel unit 123. That is, the pixel unit 123 may be sealed by the buffer layer 122 and the encapsulation layer 124, and the encapsulation layer 124 and the pixel unit 123 may be sealed by the buffer layer 122 and the first adhesive layer AD1. The first adhesive layer AD1 may protect the organic light emitting diode of the pixel unit 123 from external moisture, oxygen, impact, etc. together with the encapsulation layer 124 and the encapsulation substrate 125. In this case, the first adhesive layer AD1 may further include an absorbent. The absorbent may be hygroscopic particles and absorb moisture, oxygen, etc. from the outside to minimize the penetration of moisture and oxygen into the pixel unit 123.

[0102] The back cover 110 is disposed on the encapsulation substrate 125. The back cover 110 may be disposed to contact the encapsulation substrate 125 of the display panel 120 to protect the display panel 120. In order to protect the display panel 120, the back cover 110 may be formed of a material having rigidity.

[0103] A second adhesive layer AD2 may be provided between the encapsulation substrate 125 and the back cover 110. The second adhesive layer AD2 may bond the encapsulation substrate 125 and the back cover 110 to each other. The second adhesive layer AD2 is formed of an adhesive material and may be a thermosetting or naturally curing adhesive. For example, the second adhesive layer AD2 may be formed of an optically clear adhesive (OCA), a pressure sensitive adhesive (PSA), etc., but is not limited thereto.

[0104] Despite Figure 4, it is shown that the plurality of openings 111 of the back cover 110 are not filled with the second adhesive layer AD2, but the second adhesive layer AD2 may be filled in some or all of the plurality of openings 111. If the second adhesive layer AD2 is filled in the plurality of openings 111 of the back cover 110, the contact area between the second adhesive layer AD2 and the back cover 110 is increased, so that the peeling phenomenon can be avoided.

[0105] At the same time, despite Figure 4 Although not shown in the figure, a light-transmitting film may be further provided on the entire substrate 121. The light-transmitting film may perform a function of protecting the front surface of the display panel 120 or minimizing reflection of external light incident on the display panel 120. For example, the light-transmitting film may be at least one of a polyethylene terephthalate (PET) film, an anti-reflection film, a polarizing film, and a transmittance controllable film, but is not limited thereto.

[0106] <Support Plate>

[0107] Refer again Figure 2 , the support plate 160 is disposed on the rear surface of the display unit DP. The support plate 160 is disposed on the surface of the display unit DP opposite to the surface on which the screen is displayed, that is, on the rear surface of the display unit DP. In addition, one side of the support plate 160 is fixed to the head bar HB, and the other side of the support plate 160 may be fixed to the housing unit HP. Therefore, the support plate 160 may be folded or unfolded as the display unit DP is wound or unfolded. For example, when the display unit DP is wound around the roller 151, the support plate 160 may be folded, and when the display unit DP is unfolded from the roller 151, the support plate 160 may be unfolded. In addition, when the display unit DP is completely wound around the roller 151, most of the support plate 160 is disposed in the housing unit HP to be surrounded by the head bar HB and the housing unit HP. In addition, when the display unit DP is completely unfolded from the roller 151, the support plate 160 may be disposed on the rear surface of the display unit DP in a mesh pattern.

[0108] The support plate 160 supports the display unit DP from the rear surface of the display unit DP. For example, when the display unit DP is fully unfolded, the display unit DP may be unfolded to be partially bent. At this time, the support plate 160 supports the entire rear surface of the display unit DP to suppress the display unit DP from partially bending. The support plate 160 may be formed of a metal or plastic material, but is not limited thereto.

[0109] Reference Figure 2 The supporting plate 160 includes a plurality of first plates 161 and a plurality of second plates 162 .

[0110] Some of the plurality of first plates 161 are fixed to the head bar HB and the housing unit HP. For example, one of the plurality of first plates 161 is fixed to the head bar HB, and another of the plurality of first plates 161 may be fixed to the housing unit HP. At this time, the plurality of second plates 162 may be disposed adjacent to the plurality of first plates 161 fixed to the head bar HB and the housing unit HP.

[0111] The plurality of first plates 161 and the plurality of second plates 162 are alternately arranged. For example, the plurality of first plates 161 may be arranged in odd rows and the plurality of second plates 162 may be arranged in even rows. Therefore, the plurality of first plates 161 and the plurality of second plates 162 may be arranged to form a mesh pattern as a whole. Meanwhile, the plurality of first plates 161 and the plurality of second plates 162 may be arranged in a reverse manner. For example, the plurality of second plates 162 may be arranged in odd rows and the plurality of first plates 161 may be arranged in even rows.

[0112] The plurality of first plates 161 and the plurality of second plates 162 may be formed independently. The plurality of first plates 161 and the plurality of second plates 162 are formed separately to be partially combined with each other by a binder material. For example, the plurality of first plates 161 and the plurality of second plates 162 are formed in a sinusoidal shape to be combined at points where the peaks of the plurality of first plates 161 and the valleys of the plurality of second plates 162 meet. That is, the plurality of first plates 161 and the plurality of second plates 162 are combined at a plurality of points to configure the support plate 160. However, it is not limited thereto and the plurality of first plates 161 and the plurality of second plates 162 may be formed integrally.

[0113] The support plate 160 may include a plurality of openings 160a. Specifically, when the display unit DP is fully unfolded, the support plate 160 is arranged on the rear surface of the display unit DP in a mesh pattern so that a plurality of openings 160a may be included. The width W1 of the plurality of openings 160a in a direction perpendicular to the moving direction of the display unit DP may be greater than the width W2 of the plurality of openings 160a in the moving direction of the display unit DP, for example, W1 may be twice or more of W2, and W1 is preferably twice of W2, but is not limited thereto. Specifically, when the display panel of the display unit DP is wound, buckling is generated in the plurality of second plates 162 so that the plurality of openings 160a (in the moving direction of the display unit DP) are closed and the support plate 160 may be folded. In this case, when the width W1 of the plurality of openings 160a in a direction perpendicular to the moving direction of the display unit DP is equal to or less than the width W2 in the moving direction of the display unit DP, the elastic force of the support plate 160 may increase in the moving direction of the display unit DP. Therefore, the support plate 160 may not be easily folded when the display panel is wound, so that it may not be easy to repeatedly fold and unfold the support plate. Therefore, the plurality of openings 160a are formed so that the width W1 of the plurality of openings 160a in the direction perpendicular to the moving direction of the display unit DP is greater than the width W2 in the moving direction of the display unit DP to reduce the elastic force of the support plate 160 in the moving direction of the display unit DP. By doing so, the support plate 160 can be easily flexibly deformed according to the winding or unfolding of the display panel.

[0114] In a general manually driven rollable display device, a user directly pulls a head bar connected to a display panel from a housing unit to unfold the display panel. However, when the user directly pulls the display panel to be unfolded, the display panel may be partially bent due to gravity. Specifically, the display panel has no separate structure on the rear surface to support the display panel, making it difficult to fix the portion between the housing unit and the head bar to be flat.

[0115] Therefore, the display device 100 according to the exemplary embodiment of the present disclosure sets the support plate 160 on the rear surface of the display unit DP to fix the display panel to be flat when the display panel of the display unit DP is unfolded. The support plate 160 is configured to be folded or unfolded when the display panel is wound or unfolded. For example, the support plate 160 is configured to be folded when the display panel is wound, and the support plate 160 can be unfolded to support the rear surface of the display unit when the display panel is unfolded. Specifically, when the display panel is unfolded, the support plate 160 is arranged on the rear surface of the display unit DP in a mesh pattern to uniformly support the entire rear surface of the display unit DP. Therefore, the support plate 160 that supports the portion of the display unit DP that is originally to be bent supports the rear surface of the display unit DP to fix the display panel to be flat. Therefore, when the user uses the unfolded display device 100, a structure in which the display device 100 is firmly fixed to be maintained is provided, so that the display device 100 according to the exemplary embodiment of the present disclosure can also improve the convenience of the user and the reliability of the display device.

[0116] <Hole of Support Plate>

[0117] Figure 5 is a perspective view of a display device according to another exemplary embodiment of the present disclosure. Figure 6 yes Figure 5 An enlarged plan view of the second panel of the display device is shown. Figure 5 and Figure 6 The display device 500 and Figures 1A to 4 The only difference between the display devices 100 is the support plate 560, and the other configurations are substantially the same, so redundant description will be omitted.

[0118] Reference Figure 5 and Figure 6 , the plurality of second plates 562 include a plurality of holes 562a. The plurality of holes 562a are formed to have an elliptical shape and may be formed in the plurality of second plates 562. Figure 6 In the figure, it is shown that a plurality of holes 562a are alternately arranged in a plurality of second plates 562, but it is not limited thereto, so a plurality of holes 562a can be arranged in parallel and can also be arranged irregularly. In addition, a plurality of holes 562a can be formed in various shapes such as a rectangular shape, a band shape, a dumbbell shape or a diamond shape.

[0119] The width WL of the plurality of holes 562a in the short side direction of the plurality of second plates 562 is greater than the width WS of the plurality of holes 562a in the long side direction. Specifically, as the display panel of the display unit DP is wound or unfolded, the plurality of second plates 562 are repeatedly folded and unfolded in the same shape and the opposite shape as the shape of the plurality of first plates 561, so that stress may be generated in the plurality of second plates 562. At this time, when the width WL of the plurality of holes 562a in the short side direction of the plurality of second plates 562 is less than the width WS in the long side direction, it is difficult to disperse the stress generated in the plurality of second plates 562, and the elasticity of the plurality of second plates 562 may be stronger. Therefore, the plurality of second plates 562 may not be flexibly deformed. Therefore, the width WL of the plurality of holes 562a in the short side direction of the plurality of second plates 562 is formed to be greater than the width WS in the long side direction. By doing so, when the display panel is wound or unfolded, the stress generated in the plurality of second plates 562 is reduced and the plurality of second plates 562 can be flexibly deformed.

[0120] In a display device 500 according to another exemplary embodiment of the present disclosure, a plurality of holes 562a are formed in a plurality of second plates 562 so that when the display unit DP is wound, bending occurs in the plurality of second plates 562. Specifically, the support plate 560 is configured to be folded as the display panel of the display unit DP is wound. At this time, the plurality of second plates 562 arranged in even rows are folded according to the shape of the plurality of first plates 561 fixed to the head bar HB and the housing unit HP. Therefore, when bending, i.e., twisting, is easily generated in the plurality of second plates 562, the support plate 560 can be easily folded. Therefore, a plurality of holes 562a are formed in the plurality of second plates 562 so that the plurality of second plates 562 can be easily deformed when the display panel is wound, so that the support plate 560 can be easily folded.

[0121] In addition, in the display device 500 according to another exemplary embodiment of the present disclosure, the width WL of the plurality of holes 562a in the short side direction of the plurality of second plates 562 is formed to be greater than the width WS in the long side direction, so that the stress generated in the plurality of second plates 562 can be reduced. Specifically, the plurality of second plates 562 can be repeatedly folded and unfolded in the same shape and the opposite shape as the shape of the plurality of first plates 561 as the display panel is wound or unfolded. At this time, stress is generated in the short side direction of the plurality of second plates 562. Therefore, when the width WL of the plurality of holes 562a in the short side direction of the plurality of second plates 562 is formed to be greater than the width WS in the long side direction, the stress and elasticity generated in the plurality of second plates 562 can be reduced. Therefore, the width WL of the plurality of holes 562a in the short side direction of the plurality of second plates 562 is formed to be greater than the width WS in the long side direction. By doing so, when the display panel is wound or unfolded, the stress and elasticity generated in the plurality of second plates 562 are reduced, so that the plurality of second plates 562 can be flexibly deformed.

[0122] <Modulus of Support Plate>

[0123] Figure 7 is a perspective view of a display device according to still another exemplary embodiment of the present disclosure. Figure 7 The display device 700 and Figures 1A to 4 The only difference between the display devices 100 is the support plate 760, and the other configurations are substantially the same, so redundant description will be omitted.

[0124] Reference Figure 7 , the elastic modulus (elastic modulus may also be referred to as modulus herein unless the context clearly indicates otherwise) of the plurality of first plates 761 is greater than the modulus of the plurality of second plates 762. Specifically, when the plurality of first plates 761 is formed of a metal material, the plurality of second plates 762 may be formed of a material having a modulus smaller than that of the plurality of first plates 761, that is, may be formed of a material softer than the plurality of first plates 761. At this time, the modulus of the material of the plurality of second plates 762 may be 30% or less of the modulus of the material of the plurality of first plates 761.

[0125] In the display device 700 according to another exemplary embodiment of the present disclosure, the plurality of second plates 762 are formed of a material having a modulus smaller than that of the plurality of first plates 761 to generate buckling in the plurality of second plates 762. Specifically, the support plate 760 is configured to fold as the display panel of the display unit DP is wound. At this time, the plurality of second plates 762 arranged in the even-numbered rows are folded according to the shapes of the plurality of first plates 761 fixed to the head bar HB and the housing unit HP. Therefore, when buckling, i.e., twisting, is easily generated in the plurality of second plates 762, the support plate 760 can be easily folded. Therefore, the plurality of second plates 762 are formed of a material having a modulus lower than that of the plurality of first plates 761, so that the plurality of second plates 762 can be easily folded according to the shapes of the plurality of first plates 761.

[0126] <Multiple guide members>

[0127] Figure 8 is a perspective view of a display device according to still another exemplary embodiment of the present disclosure. Fig. 9 Among them Figure 8 A cross-sectional view of a display device in which the display panel is fully wrapped. Figure 8 and Fig. 9 The display device 800 and Figures 1A to 4 The only difference between the display devices 100 is that guide members 870HB and 870HP are added, and other configurations are substantially the same, so redundant description will be omitted.

[0128] Reference Figure 8 The head bar HB and the housing unit HP include a plurality of guide members 870HB and 870HP, respectively. The plurality of guide members 870HB and 870HP are respectively disposed in the head bar HB and the housing unit HP, so that a portion of the guide members is disposed inside the head bar HB or the housing unit HP, while another portion of the guide members can be disposed outside the head bar HB or the housing unit HP. Figure 8 In the figure, it is shown that the multiple guide members 870HB and 870HP are formed integrally with the head bar HB or the shell unit HP, respectively. However, the multiple guide members 870HB and 870HP may be formed in a configuration separate from the head bar HB or the shell unit HP, respectively, so as to be fixed in the head bar HB or the shell unit HP by means of a separate fixing member. In addition, the number of the multiple guide members 870HB and 870HP may vary according to the design, and the multiple guide members 870HB or 870HP may be provided only in a part of the head bar HB or the shell unit HP. In addition, although it is shown that the multiple guide members 870HB and 870HP are provided in both the head bar HB or the shell unit HP, the multiple guide members 870HB or 870HP may also be provided only in the corresponding one of the head bar HB or the shell unit HP.

[0129] Reference Figure 8 and Fig. 9 , the shapes of the multiple guide members 870HB of the head bar HB and the multiple guide members 870HP of the shell unit HP correspond to the mesh pattern of the support plate 160 or the shape of the opening of the support plate 160. More specifically, the shapes of the lower surfaces of the multiple guide members 870HB of the head bar HB and the shapes of the upper surfaces of the multiple guide members 870HP of the shell unit HP correspond to the mesh pattern of the support plate 160 or the shape of the opening of the support plate 160. For example, when the support plate 160 is formed in a sinusoidal shape, the lower surfaces of the multiple guide members 870HB of the head bar HB and the upper surfaces of the multiple guide members 870HP of the shell unit HP may also be formed in a sinusoidal shape. Therefore, when the display panel of the display unit DP is wound, the support plate 160 can be folded while being guided along the shapes of the lower surfaces of the multiple guide members 870HB of the head bar HB and the upper surfaces of the multiple guide members 870HP of the shell unit HP.

[0130] Reference Figure 8 and Fig. 9 , the multiple guide members 870HB of the head rod HB and the multiple guide members 870HP of the shell unit HP are formed to correspond to each other. For example, when the multiple guide members 870HB of the head rod HB and the multiple guide members 870HP of the shell unit HP are formed in a sine shape, the peaks of the multiple guide members 870HB of the head rod HB and the valleys of the multiple guide members 870HP of the shell unit HP are formed at corresponding positions. In addition, the valleys of the multiple guide members 870HB of the head rod HB and the peaks of the multiple guide members 870HP of the shell unit HP can be formed at corresponding positions. Therefore, as Fig. 9 As shown, when the display panel is fully wound, the peaks of the multiple guide members 870HB of the head bar HB engage with the valleys of the multiple guide members 870HP of the housing unit HP, and the valleys of the multiple guide members 870HB of the head bar HB can engage with the peaks of the multiple guide members 870HP of the housing unit HP.

[0131] At the same time, despite Figure 8 and Fig. 9 , it is shown that the multiple guide members 870HB of the head bar HB and the multiple guide members 870HP of the housing unit HP are formed in a sine shape, but it is not limited to this. Therefore, the multiple guide members 870HB of the head bar HB and the multiple guide members 870HP of the housing unit HP can be formed in any one of a triangular shape, a rectangular shape and a circular shape.

[0132] Meanwhile, in some exemplary embodiments, the support plate 160 fixed to the plurality of guide members 870HB and 870HP may include a plurality of holes, such as Figure 5Alternatively, the support plate 160 fixed to the plurality of guide members 870HB and 870HP may be formed of a material having a lower modulus, such as Figure 7 The support plate 160 is the same as the plurality of second plates 762 of the support plate 760. Therefore, when the display panel DP is wound, the support plate 160 can be more easily guided by the plurality of guide members 870HB of the head bar HB and the plurality of guide members 870HP of the housing unit HP.

[0133] In a display device 800 according to another exemplary embodiment of the present disclosure, a plurality of guide members 870HB and 870HP are provided in the head bar HB and the housing unit HP so that when the display panel is wound, the folding shape of the support plate 160 can be guided. Specifically, the shape of the lower surface of the plurality of guide members 870HB of the head bar HB and the shape of the upper surface of the plurality of guide members 870HP of the housing unit HP can be formed into a mesh pattern corresponding to the support plate 160. For example, when the support plate 160 is formed in a sinusoidal shape, the lower surface of the plurality of guide members 870HB of the head bar HB and the upper surface of the plurality of guide members 870HP of the housing unit HP can also be formed in a sinusoidal shape. Therefore, when the display panel is wound, the support plate 160 can be folded while being guided along the shape of the lower surface of the plurality of guide members 870HB of the head bar HB and the upper surface of the plurality of guide members 870HP of the housing unit HP.

[0134] In addition, in the display device 800 according to another exemplary embodiment of the present disclosure, the multiple guide members 870HB of the head bar HB and the multiple guide members 870HP of the housing unit HP can be formed to engage with each other. More specifically, the shapes of the multiple guide members 870HB of the head bar HB and the shapes of the multiple guide members 870HP of the housing unit HP can be formed so that the multiple guide members 870HB and the multiple guide members 870HP engage with each other when the display panel of the display device 800 is wound. For example, when the multiple guide members 870HB of the head bar HB and the multiple guide members 870HP of the housing unit HP are formed in a sine shape, if the display panel of the display device 800 is wound, the peaks of the multiple guide members 870HB of the head bar HB and the valleys of the multiple guide members 870HP of the housing unit HP can engage with each other. In addition, the valleys of the multiple guide members 870HB of the head bar HB and the peaks of the multiple guide members 870HP of the housing unit HP can engage with each other. Therefore, when the display panel is completely wound, the support plate 160 disposed between the plurality of guide members 870HB of the head bar HB and the plurality of guide members 870HP of the housing unit HP can be stably accommodated. In addition, as the volume of the support plate 160 is minimized, the volume of the display device 800 can also be minimized accordingly.

[0135] <Display device including drive unit>

[0136] Fig. 10A and Fig. 10B is a perspective view of a display device according to still another exemplary embodiment of the present disclosure. Fig. 10A and Fig. 10B The display devices 1000A and 1000B are Figures 1A to 4 The only difference between the display devices 100 is the addition of driving units 1180A and 1180B, and the other configurations are substantially the same, so redundant description will be omitted.

[0137] Reference Fig. 10A and Fig. 10B , the display devices 1000A and 1000B include driving units 1180A and 1180B, respectively, which may be referred to as driving components herein. The driving units 1180A and 1180B are disposed on the rear surface of the support plate 160 to drive the display panel of the display unit DP to be wound or unwound. For example, the driving units 1180A and 1180B may be configured using a connecting rod structure, a chain structure, or a block structure.

[0138] First, refer to Fig. 10A , the driving unit 1180A can be formed using a connecting rod structure. The connecting rod structure may include a connecting rod unit 1181, a rotating unit 1182, and a motor 1183. The connecting rod unit 1181 may be configured by a plurality of connecting rods. One end of the connecting rod unit 1181 is connected to the head bar HB and the other end of the connecting rod unit 1181 may be connected to the rotating unit 1182. In addition, the connecting rod unit 1181 receives a driving force from the motor 1183 and the rotating unit 1182 connected to the motor 1183 to repeatedly perform a folding operation or an unfolding operation. Specifically, according to the drive of the motor 1183, the rotating unit 1182 moves linearly, and according to the linear movement of the rotating unit 1182, the connecting rod unit 1181 may move in the vertical direction while crossing in a scissors shape. Therefore, the display unit DP connected to the head bar HB may move in the vertical direction according to the vertical movement of the connecting rod unit 1181, and even when the display unit DP is fully unfolded, the display unit DP may be fixed in a flat state by the connecting rod unit 1181.

[0139] Next, refer to Fig. 10B, the drive unit 1180B can be formed using a chain structure. The chain structure may include a lifting unit 1184, a rotating unit 1182, and a motor 1183. The lifting unit 1184 may be configured by a sprocket 1184a and a plurality of unit blocks 1184b connected to each other by a plate. One end of the plurality of unit blocks 1184b is connected to the head bar HB to lift and lower the display unit DP according to the rotation of the sprocket 1184a. Specifically, when the rotating unit 1182 transmits the rotational motion of the motor 1183 to the sprocket 1184a, the sprocket 1184a may rotate. In addition, the plurality of unit blocks 1184b engage with the sprocket 1184a to move in the vertical direction according to the rotation of the sprocket 1184a. Therefore, the display unit DP connected to the head bar HB may move in the vertical direction according to the vertical movement of the plurality of unit blocks 1184b, and even when the display unit DP is fully unfolded, the display unit DP may be fixed in a flat state by the lifting unit 1184. At the same time, although in Fig. 10B , it is shown that the lifting units 1184 are provided at the left and right sides of the display unit DP, but it is not limited thereto and only one lifting unit 1184 may be provided at the center of the display unit DP.

[0140] The display devices 1000A and 1000B according to another exemplary embodiment of the present disclosure include drive units 1180A and 1180B to realize large-sized display devices 1000A and 1000B. Specifically, when the size of the display devices 1000A and 1000B increases, if the display unit DP is lifted or lowered, the tension and compression forces may increase. Therefore, the drive unit 1180A or 1180B having a connecting rod structure, a chain structure, or a block structure is configured to provide power so that the connecting rod unit 1181 or the lifting unit 1184 is lifted or lowered according to the rotational movement of the motor 1183, thereby lifting or lowering the display unit DP.

[0141] Exemplary embodiments of the present disclosure may also be described as follows:

[0142] According to one aspect of the present disclosure, a display device includes: a display panel; a roller, the display panel is wound around or unwound from the roller; a housing unit, which accommodates the display panel and the roller; a head rod, which is connected to one end of the display panel; and a support plate, which supports the rear surface of the display panel, has one side fixed to the head rod and the other side fixed to the housing unit, and forms a mesh pattern.

[0143] The support plate may include a plurality of first plates and a plurality of second plates, the plurality of first plates and the plurality of second plates may be alternately disposed, and the plurality of first plates and the plurality of second plates may form a mesh pattern.

[0144] One of the plurality of first plates may be fixed to the head bar and another of the plurality of first plates may be fixed to the housing unit, and the plurality of second plates may be more easily deformed than the plurality of first plates. As an example, the plurality of second plates may include a plurality of holes.

[0145] A width of the plurality of holes in a short side direction of the plurality of second plates may be greater than a width of the plurality of holes in a long side direction of the plurality of second plates.

[0146] Furthermore, as another example, the modulus of the plurality of second plates may be less than the modulus of the plurality of first plates.

[0147] The modulus of the material forming the plurality of second plates may be 30% or less of the modulus of the material forming the plurality of first plates.

[0148] The plurality of first plates and the plurality of second plates may be bonded at a plurality of points by an adhesive.

[0149] The plurality of first plates and the plurality of second plates may be integrally formed.

[0150] The head bar or the housing unit may include a plurality of guide members, and the plurality of guide members may be formed to have a shape corresponding to the mesh pattern. As an example, the shape may include any one of a triangular shape, a rectangular shape, a sinusoidal shape, and a circular shape.

[0151] The shapes of the plurality of guide members of the head rod may be engaged with the shapes of the plurality of guide members of the housing unit.

[0152] The shapes of lower surfaces of the plurality of guide members of the head bar and upper surfaces of the plurality of guide members of the housing unit may correspond to the mesh pattern of the support plate.

[0153] When the display panel is completely wrapped, the support plate may be surrounded by the housing unit and the head bar.

[0154] The display device may further include an elastic member provided in the housing unit to provide elastic force for winding the display panel.

[0155] The display device may further include a back cover attached to the display panel between the display panel and the support plate and including a plurality of openings.

[0156] The display device may further include a driving unit configured to drive the display panel to be wound or unwound. As an example, the driving unit may have a connecting rod structure, a chain structure, or a block structure.

[0157] As an example, when the display panel is fully unfolded, the mesh pattern may include a plurality of openings, wherein a width of each opening in a direction perpendicular to a moving direction of the display panel may be twice a width of each opening in the moving direction of the display panel.

[0158] According to another aspect of the present disclosure, a display device may include: a display panel that displays an image; a back cover arranged on the rear surface of the display panel; a roller, the back cover and the display panel being wound around or unwound from the roller; a head rod fastened to the back cover; a shell unit that accommodates the display panel, the back cover and the roller; and a supporting plate, which is fastened to the head rod and the shell unit to support the rear surface of the display panel and the rear surface of the back cover.

[0159] When the display panel is fully unfolded, the support plate may form a mesh pattern including a plurality of openings. For example, the width of the plurality of openings in a direction perpendicular to the moving direction of the display panel may be twice the width of the plurality of openings in the moving direction of the display panel.

[0160] The support plate may include a plurality of plates, and among the plurality of plates, a plate adjacent to a plate fastened to the head bar or housing unit may be more easily deformed than a plate fastened to the head bar or housing unit. In one example, a plate adjacent to a plate fastened to the head bar or housing unit includes a plurality of holes.

[0161] In another example, a plate adjacent to a plate to which the head bar or housing unit is fastened may be formed of a material having a modulus less than the modulus of the plate to which the head bar or housing unit is fastened.

[0162] The head bar or the housing unit may include a plurality of guide members, and the plurality of guide members may be formed to have a shape corresponding to the above-mentioned mesh pattern, which shape may include, for example, any one of a triangular shape, a rectangular shape, a sinusoidal shape, and a circular shape. As an example, the shapes of the plurality of guide members of the head bar may mesh with the shapes of the plurality of guide members of the housing unit.

[0163] Although the exemplary embodiments of the present disclosure have been described in detail with reference to the accompanying drawings, the present disclosure is not limited thereto and may be implemented in many different forms without departing from the technical concept of the present disclosure. Therefore, the exemplary embodiments of the present disclosure are provided for illustrative purposes only and are not intended to limit the technical concept of the present disclosure. The scope of the technical concept of the present disclosure is not limited thereto. Therefore, it should be understood that the above exemplary embodiments are exemplary in all aspects and do not limit the present disclosure. The scope of protection of the present disclosure should be interpreted based on the attached claims, and all technical concepts within their equivalent scope should be understood to fall within the scope of the present disclosure.

Claims

1. A display device, comprising: Display panel; a roller, the display panel being wound onto or unwound from the roller; a housing unit that accommodates the display panel and the roller; A head bar connected to one end of the display panel; as well as a support plate that supports the rear surface of the display panel, has one side fixed to the head bar and the other side fixed to the housing unit, and forms a mesh pattern, wherein the support plate is configured to be folded or unfolded when the display panel is wound or unfolded, and when the display panel is unfolded, the support plate is arranged on the rear surface of the display panel in the mesh pattern and supports the rear surface of the display panel, The support plate includes a plurality of plates, and among the plurality of plates, a plate adjacent to a plate fixed to the head rod or the housing unit is more easily deformed than a plate fixed to the head rod or the housing unit.

2. The display device according to claim 1, wherein: The plurality of plates include a plurality of first plates and a plurality of second plates, the plurality of first plates and the plurality of second plates are alternately arranged, and the plurality of first plates and the plurality of second plates form a mesh pattern.

3. The display device according to claim 2, wherein: One of the plurality of first plates is fixed to the head bar and another of the plurality of first plates is fixed to the housing unit, and the plurality of second plates are more easily deformed than the plurality of first plates.

4. The display device according to claim 3, wherein: The second plurality of plates includes a plurality of holes.

5. The display device according to claim 4, wherein: The width of the plurality of holes in the short-side direction of the plurality of second plates is greater than the width of the plurality of holes in the long-side direction of the plurality of second plates.

6. The display device according to claim 3, wherein: The modulus of the second plurality of plates is less than the modulus of the first plurality of plates.

7. The display device according to claim 6, wherein: The modulus of the material forming the plurality of second plates is 30% or less of the modulus of the material forming the plurality of first plates.

8. The display device according to claim 2, wherein: The plurality of first plates and the plurality of second plates are bonded at a plurality of points by an adhesive.

9. The display device according to claim 2, wherein: The plurality of first plates and the plurality of second plates are integrally formed.

10. The display device according to claim 1, wherein: The head bar or the housing unit includes a plurality of guide members, and the plurality of guide members are formed to have a shape corresponding to the mesh pattern.

11. The display device according to claim 10, wherein: The shape includes any one of a triangular shape, a rectangular shape, a sinusoidal shape, and a circular shape.

12. The display device according to claim 10, wherein: The shapes of the plurality of guide members of the head bar are engaged with the shapes of the plurality of guide members of the housing unit.

13. The display device according to claim 10, wherein: The shapes of the lower surfaces of the plurality of guide members of the head bar and the upper surfaces of the plurality of guide members of the housing unit correspond to the mesh pattern of the support plate.

14. The display device according to claim 1, wherein: When the display panel is completely wound, the support plate is surrounded by the housing unit and the head bar.

15. The display device according to claim 1, further comprising: An elastic member is provided in the housing unit to provide elastic force for winding the display panel.

16. The display device according to claim 1, further comprising: A back cover is attached to the display panel between the display panel and the support plate and includes a plurality of openings.

17. The display device according to claim 1, further comprising: A driving unit is configured to drive the display panel to be wound or unwound.

18. The display device according to claim 17, wherein: The driving unit has a connecting rod structure, a chain structure or a block structure.

19. The display device according to claim 1, wherein: When the display panel is fully unfolded, the mesh pattern includes a plurality of openings, wherein a width of each opening in a direction perpendicular to a moving direction of the display panel is twice a width of each opening in the moving direction of the display panel.

20. A display device, comprising: a display panel that displays an image; a back cover, which is disposed on the rear surface of the display panel; a roller, the back cover and the display panel being wound onto or unwound from the roller; A head rod, which is fastened to the back cover; a housing unit that accommodates the display panel, the back cover, and the roller; as well as a support plate, which is fastened to the head bar and the housing unit to support the rear surface of the display panel and the rear surface of the back cover, wherein the support plate is configured to be folded or unfolded when the display panel is wound or unfolded, and when the display panel is unfolded, the support plate is disposed on the rear surface of the back cover in a mesh pattern including a plurality of openings and supports the rear surface of the back cover, and The support plate includes a plurality of plates, and among the plurality of plates, a plate adjacent to a plate fastened to the head rod or the housing unit is more easily deformed than a plate fastened to the head rod or the housing unit.

21. The display device according to claim 20, wherein: A width of the plurality of openings in a direction perpendicular to a moving direction of the display panel is twice a width of the plurality of openings in the moving direction of the display panel.

22. The display device according to claim 20, wherein: A plate adjacent to the plate to which the head bar or the housing unit is fastened includes a plurality of holes.

23. The display device according to claim 20, wherein: The plate adjacent to the plate fastened to the head bar or the housing unit is formed of a material having a modulus smaller than the modulus of the plate fastened to the head bar or the housing unit.

24. The display device according to claim 20, wherein: The head bar or the housing unit includes a plurality of guide members, and the plurality of guide members are formed to have a shape corresponding to the mesh pattern. 25 . The display device according to claim 24 , the shape comprising any one of a triangular shape, a rectangular shape, a sinusoidal shape, and a circular shape.

26. The display device according to claim 24, wherein: The shapes of the plurality of guide members of the head bar are engaged with the shapes of the plurality of guide members of the housing unit.

27. A display device comprising: Display panel; a roller, the display panel being wound onto or unwound from the roller; as well as a support plate having one side coupled to the display panel and another side coupled to the roller, The support plate supports the rear surface of the display panel and is folded or unfolded as the display panel is wound or unfolded. wherein the support plate has a plurality of openings that are closed or opened to form a mesh pattern as the display panel is wound or unfolded, and wherein the support plate comprises a plurality of plates alternately arranged to form the plurality of openings, and among the plurality of plates, plates adjacent to plates adjacent to the coupling position are more easily deformed than plates adjacent to the coupling position, wherein the support plate is coupled to the display panel or the roller at the coupling position.

28. The display device according to claim 27, wherein: A width of the plurality of openings in a direction perpendicular to a moving direction of the display panel is twice a width of the plurality of openings in the moving direction of the display panel.

29. The display device according to claim 27, further comprising: A head bar connected to one end of the display panel; as well as a housing unit that accommodates the display panel and the roller, One side of the support plate is coupled to the display panel via the head bar, and the other side of the support plate is coupled to the roller via the housing unit.

30. The display device according to claim 29, wherein: The head bar or the housing unit includes a plurality of guide members, and the plurality of guide members are formed to have a shape corresponding to the opening of the support plate.

31. The display device according to claim 30, wherein: The shapes of the plurality of guide members of the head bar are engaged with the shapes of the plurality of guide members of the housing unit.

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