Slide-in display unit

Abstract

A display device presented here comprises a display panel containing a first area in which an image is displayed, a second area, and a third area, wherein the first area is deformable and the second and third areas are located outside the first area and are non-deformable. The display device further comprises a support element that carries the display panel and an adhesive element that attaches the support element to the display panel. The adhesive element comprises a first adhesive element corresponding to the first area of ​​the display panel, a second adhesive element corresponding to the second area of ​​the display panel, and a third adhesive element corresponding to the third area of ​​the display panel. The elastic modulus of the first adhesive element is less than the elastic modulus of the second adhesive element and less than the elastic modulus of the third adhesive element.

Description

The present application claims priority over patent application No. 10-2024-0192120 of the Republic of Korea, filed on December 20, 2024. BACKGROUND Area The present disclosure relates to a retractable or rollable display device that can prevent a support element from being pulled off a display panel. Discussion of the related field Recently, with the development of multimedia, the importance of display devices has increased. In response, display devices with a flat display panel, such as liquid crystal displays and organic electroluminescent displays, are being marketed. Of these, organic electroluminescent displays are currently widely used because they offer a fast response time, high brightness, and a good viewing angle. Furthermore, various flexible display devices have been developed recently. For example, rollable, extendable, and retractable display devices are being developed. However, these display devices have a support element that is attached to a display panel to support it. Due to tension differences between areas, however, the problem arises that the support element can be pulled away from the display panel. SUMMARY An advantage of the present disclosure is to provide a display device which, by differently adjusting the elastic modulus of an adhesive element in certain areas, can prevent a support element from being pulled off a display panel. Additional features and advantages of the present disclosure are set forth in the following description and will be partly evident from the description or can be learned through practical application of the present disclosure. These and other advantages of the present disclosure are realized and achieved through the structure, which is particularly evident in the written description and the claims thereto, as well as in the accompanying drawings. To achieve these and other advantages, and in accordance with the purpose of the present disclosure, as set forth and described in detail herein, a display device is presented. The display device includes a display panel. The display panel comprises a first area in which an image is displayed and which is deformable, and a second and a third area which are arranged outside the first area and are not deformable. The display panel includes a support element that carries the display panel and an adhesive element that attaches the support element to the display panel, the adhesive element being a first adhesive element corresponding to the first area of ​​the display panel, and a second adhesive element corresponding to the second area of ​​the display panel, respectively.a third adhesive element corresponding to the third area of ​​the scoreboard, wherein an elastic modulus of the first adhesive element is smaller than an elastic modulus of the second adhesive element and / or an elastic modulus of the third adhesive element. The display device according to any of the above aspects may include one, more, or all of the following features. The first adhesive element and / or the second adhesive element and / or the third adhesive element can be configured with double-sided adhesive tapes. The boundary surface between the first adhesive element and the second adhesive element can be designed in a sawtooth shape. The boundary surfaces between the first adhesive element and the third adhesive element can be designed in a sawtooth shape. The boundary surfaces between the first adhesive element, the second adhesive element and the third adhesive element can be designed in a sawtooth shape. The sawtooth shape, as mentioned above, can be either a triangular shape, a right-angled shape, or a circular shape. The first adhesive element may contain at least one of the following elements or may contain all of the following elements: a first foam element; a first adhesive layer formed on a lower surface of the first foam element; and a second adhesive layer formed on an upper surface of the first foam element opposite the lower surface of the first foam element. The first adhesive element can contain two areas that are separate from each other. The second adhesive element and / or the third adhesive element may contain, i.e., either the second and third adhesive elements, or each or both of the second and third adhesive elements, may contain at least one of the following elements, or may contain all of the following elements: a base element; a third adhesive layer arranged on a lower surface of the base element; a fourth adhesive layer arranged on an upper surface of the base element opposite the lower surface of the base element; a second foam element arranged on the fourth adhesive layer; and a fifth adhesive layer arranged on the second foam element. The first foam element may contain a resin. The second foam element may contain a resin. The basic element can contain a flexible plastic material. The support element may contain a metal material. The support element may contain at least one or more or all of the following elements: a first support element attached to the first adhesive element at a first surface of the first adhesive element; a second support element attached to the second adhesive element at a first surface of the second adhesive element; and a third support element attached to the third adhesive element at a first surface of the third adhesive element. Several chamfers can be formed on a second surface of the first support element, which is opposite the first surface of the first support element. The first chamfer of the multiple chamfers can be trapezoidal in shape. The first chamfer can penetrate the first supporting element. The scoreboard can be a retractable scoreboard. The display device may further include: a housing for receiving the display panel; and / or a guide element that guides the display panel into the housing and winds up the display panel. The guide element can be cylindrical. The guide element can include a curved section around which the display panel is wrapped. The width of the multiple chamfers and / or the spacing between the multiple chamfers can be determined according to the curvature of the curved section. The modulus of elasticity of the second adhesive element and the modulus of elasticity of the third adhesive element can be the same. It should be understood that both the preceding general description and the following detailed description are exemplary and explanatory, and are intended to provide a deeper explanation of the revelation as claimed. BRIEF DESCRIPTION OF THE DRAWINGSThe accompanying drawings, which are included to provide a deeper understanding of the disclosure and are incorporated into and form an integral part of this disclosure, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure. The drawings are as follows: Fig. 1 is a perspective view illustrating a display device according to one or more embodiments of the present disclosure. Figs. 2A and 2B are side views of a display device according to one or more embodiments of the present disclosure. Fig. 3 is a cross-sectional view schematically illustrating a display module of a display device according to one or more embodiments of the present disclosure.Figure 4 is a view illustrating a display panel according to one or more embodiments of the present disclosure. Figure 5 is a top view of a support element according to one or more embodiments of the present disclosure. Figure 6 is an enlarged view of a section of a support element according to one or more embodiments of the present disclosure. Figure 7 is a view illustrating a support element wrapped around a guide element according to one or more embodiments of the present disclosure. Figure 8 is a top view of an adhesive element of a display device according to one or more embodiments of the present disclosure. Figure 9A is a cross-sectional view of a first adhesive element according to one or more embodiments of the present disclosure.Figure 9B is a cross-sectional view of a second and third adhesive element according to one or more embodiments of the present disclosure. Figures 10A and 10B are views illustrating other sawtooth shapes of an adhesive element according to one or more embodiments of the present disclosure. Figure 11 is a view illustrating a further structure of an adhesive element according to one or more embodiments of the present disclosure. DETAILED DESCRIPTION The advantages and features of the present disclosure and methods for achieving them will become apparent with reference to the embodiments described in detail below and accompanied by the drawings. However, the present disclosure is not limited to the embodiments disclosed below, but can be realized in a multitude of different forms, and only these embodiments allow the present disclosure to be complete. The present disclosure is provided to fully communicate the scope of the disclosure to those skilled in the art in the field of the present disclosure, and the present disclosure can be defined by the scope of the claims. The shapes, sizes, dimensions (e.g., length, width, height, thickness, radius, diameter, area, etc.), proportions, angles, numbers and the like disclosed in the drawings to explain the embodiments of the present disclosure are for illustrative purposes only and the present disclosure is not limited to the illustrated circumstances. A dimension containing the size and thickness of each component illustrated in the drawing is included for convenience of description, and the present disclosure is not limited to the size and thickness of the illustrated component, but it should be mentioned that the relative dimensions containing the relative size, relative location, and relative thickness of the components illustrated in various drawings hereby submitted are an integral part of the present disclosure. The same reference numerals throughout the description refer to the same components. Furthermore, if, in describing the present disclosure, it is determined that a precise description of the associated known technology would unnecessarily obscure the subject matter of the present disclosure, its precise description may be omitted. When expressions such as "contain," "exhibit," "comprise," "form," "made of something," "consist of something," and the like are used in this disclosure, other components may be added unless "merely" is used. When a component is expressed in the singular, cases containing the plural are included unless a specific statement is described. The word "exemplary" is used to mean serving as an example or illustration. Aspects are exemplary aspects. "Models," "examples," "aspects," and the like should not be interpreted as being preferred or advantageous over other implementations. An embodiment, an example, an exemplary embodiment, an aspect, or the like may refer to one or more embodiments, one or more examples, one or more exemplary embodiments, one or more aspects, or the like, unless otherwise specified. Furthermore, the term "may" includes all meanings of the term "can." When interpreting the components, even if there is no separate, explicit description, they are interpreted in such a way that they contain a tolerance range. Where positional relationships are described, such as where the positional relationship between two components is described using "on," "above," "below," "under," "near," "close to," "adjacent to," "beside," "next to," or the like, one or more other components may be positioned between the two components unless a more restrictive expression such as "immediately," "directly," or "closely" is used. For example, if a structure is described as being "on," "above," "under," "above," "under," "near," "close to," "adjacent to," "next to," or "next to" another structure, this description should be interpreted to include a case in which the structures are touching, as well as a case in which a third structure is positioned or inserted between them.Furthermore, the expressions "left", "right", "above", "below", "downwards", "upwards", "upper", "lower" refer to any reference frame. In the case of a description of a temporal relationship, such as when a temporal ranking is described as "after", "following", "before" and the like, cases that are not continuous may be included unless "direct" or "immediately" is used. The respective features of various embodiments of the present disclosure can be partially or completely connected or combined with one another and can be technically coupled and driven in various ways, and the respective embodiments can be implemented independently of one another or can be implemented together with an associated relationship. When describing components of the present disclosure, terms such as first(s), second(s), A, B, (a), (b), and the like may be used. These terms serve only to distinguish the components from other components, and no nature, sequence, order, or number of components is restricted by these terms. Furthermore, when it is described that a component is "connected," "coupled," or "in contact" with another component, the component may be directly connected to or in direct contact with the other component; however, it should be understood that another component may be "inserted" between the components, or that the components may be "connected," "coupled," or "in contact" through another component. The phrase "at least one" should be understood to include all combinations of one or more of the associated elements. For example, the phrase "at least one of the first, the second, and the third element" can include all combinations of two or more of the first, the second, and the third element, as well as the first, the second, or the third element. In this disclosure, a “display device” may include a display device defined in a narrow sense, such as a display module or the like, which includes a display panel and a control section for controlling the display panel. Furthermore, the “display device” may be a complete or final product that is a notebook computer, a television, a computer monitor, a motor vehicle accessory, or an equipment display device, including any other type of vehicle, or an electronic device, or a device or instrument such as a mobile electronic device, such as a smartphone, an electronic input device, or the like, which includes the display module or the like. Therefore, the display device of this disclosure may include a display device itself, defined in a narrow sense, such as the display module or the like, and / or an application product or device that is an end-user device containing the display module or the like. In the following, embodiments of the present disclosure are described in detail with reference to the drawings. Fig. 1 is a perspective view illustrating a display device according to one or more embodiments of the present disclosure. Fig. 2A and Fig. 2B are side views of a display device according to one or more embodiments of the present disclosure. With reference to Fig. 1, Fig. 2A and Fig. 2B, the display device 100 according to one or more embodiments of the present disclosure can include a display module 110, a housing 120 in which the display module 110 is received, a guide element 150 which guides the display module 110 into the housing 120 and / or out of the housing 120, and a motor 160 which drives the display module 110 into the housing 120 and / or out of the housing 120. The housing 120 can contain at least a section of the display module 110. For example, the housing 120 can be embedded in a vehicle's dashboard to accommodate the display module 110. However, the present disclosure is not limited to this structure. For example, the display module 110 can be completely enclosed within the housing 120, or a section of the display module 110 can be exposed outside the housing 120, and another section of the display module 110 can be enclosed within the housing 120. The display module 110 can include a display panel PNL, which displays an image, and a support element 130, which is arranged on one or both sides and / or on the back of the display panel PNL to support the display panel PNL. The display panel PNL can be made of a flexible material such as plastic, such that at least one section of it is deformable. The support element 130 can support and guide the PNL scoreboard in such a way that the PNL scoreboard can slide, bend, or roll up in one direction. For example, the support element 130 can be an apron. The support element 130 can serve to increase the rigidity of the PNL scoreboard and prevent it from bending in an undesirable direction. The support element 130 can be made of a metal such as aluminum (Al), magnesium (Mg), or stainless steel (SUS), but is not limited to these materials. The support element 130 can be described in more detail later. A motion element 140 can be arranged on a rear surface of the support element 130. One end of the motion element 140 can be attached to the support element 130 and the other end of the motion element 140 can be attached to the housing 120. The motion element 140 can include a connecting section 141, a frame 142, a motion carrier 143, a motion section 144, and a reinforcement plate 145. The connecting section 141 can be coupled to the support element 130 and can move together with the support element 130 when the support element 130 moves. The connecting section 141 can be in the form of a rod and can be coupled to the upper rear surface of the support element 130. The connecting section 141 can be designed to be raised and lowered by the housing 120. When the connecting section 141 is raised and lowered, the support element 130 coupled to the connecting section 141, i.e., the display module 110, can also be raised and lowered. The connecting section 141 can connect the support element 130 and the movement section 144. Frame 142 can be coupled to housing 120. Frame 142 can be configured in a rod shape and can be coupled to housing 120. Housing 120 can support frame 142. The motion carrier 143 can be designed such that it projects upwards from the frame 142. The motion carriers 143 can be provided as a pair, and the pair of motion carriers 143 can be spaced apart from each other by a specific distance in a horizontal direction (e.g., the y-direction). A hollow section can be formed in the motion carrier 143, in which the motion section 144 is mounted. The reinforcement plate 145 can be arranged between the pair of spaced-apart motion carriers 143 and can be coupled to the motion carrier 143 to enable the pair of motion carriers 143 to maintain the set distance between them. The reinforcement plate 145 can be formed in a plate shape, but is not limited to this. The reinforcement plate 145 can be manufactured as a single piece with the pair of motion carriers 143 or can be omitted if necessary. Furthermore, the frame 142, the motion carrier 143, and the reinforcement plate 145 can be manufactured as a single piece. The motion section 144 can be coupled at one end to the connecting section 141 and can be inserted into the motion carrier 143 such that it moves in a z-direction relative to the motion carrier 143. The motion section 144 can be inserted into the hollow section of the motion carrier 143 and can move up and down from the motion carrier 143. The motion section 144 can support the support element 130 such that the exposed section of the display module 110 can maintain linearity when the display module 110 is lifted out of the housing 120. The housing 120 can be configured to accommodate at least one section of the display module 110. When the display module 110 is pushed downwards, at least one section of the display module 110 can be bent and then rolled into a cylindrical shape to be accommodated in the housing 120. The guide element 150 can be a roller guide. The guide element 150 can be installed in the housing 120, and while it is rolling, the display module 110 can be wound around an outer surface of the guide element 150 and received in the housing 120. The guide element 150 can be made of a metal such as aluminum (Al), magnesium (Mg), or stainless steel (SUS), but is not limited to this. The guide element 150 can include a curved section 151, a connecting section 152, and a bridge 153. The display module 110 can be wrapped around the outer surface of the curved section 151. The curved section 151 can be cylindrical or semi-cylindrical, but is not limited to this shape. A pair of curved sections 151 can be provided on both sides of the rear surface of the display module 110, and the pair of curved sections 151 can be spaced apart from each other in the second direction of the display module 110. The bridge 153 can be arranged between the pair of curved sections 151. One end of the display module 110 can be locked to the guide element 150. For example, one end of the display module 110 can be locked to the curved section 151 of the guide element 150, but is not restricted to this. The motor 160 can be positioned on one side of the guide element 150 to raise the display module 110. In other words, the movement section 144 can be raised by the operation of the motor 160, and while the movement section 144 moves upwards, the display module 110 can move upwards and be guided out of the housing 120. The motor 160 can be coupled to the housing 120, and a rotary shaft can be coupled to the guide element 150. Thus, when the motor 160 rotates, the guide element 150 can rotate, and accordingly, the display module 110 can be wound around or released from the guide element 150, and the display module 110 can be raised and lowered. The following describes an insertion process for the insertable display device 100 according to the present disclosure with reference to Fig. 2A and Fig. 2B. Fig. 2A is a view illustrating a state in which the display module 110 is enclosed inside the housing 120, and Fig. 2B is a view illustrating a state in which the display module 110 is led out of the housing 120. As illustrated in Fig. 2A, one end of the display module 110 can be locked to the curved section 151 of the guide element 150, and the other end of the display module 110 can be located outside the housing 120 or locked inside an inlet or outlet opening of the housing 120. At this point, the display device 100 can be in a switched-off state, such that the bendable or flexible display module 110 can be received inside the housing 120 in a state in which it is wound around the curved section 151 of the guide element 150. As illustrated in Fig. 2B, the motor 160 can be driven when the indicator device 100 is switched on, and when the motor 160 is driven, the guide element 150, which is connected to a drive shaft of the motor 160, can begin to rotate counterclockwise. When the guide element 150 rotates, the motion section 144, which is inserted into the hollow section of the motion carrier 143, can begin to rise in the z-direction. As the motion section 144 rises, the display module 110, which is coupled to the motion section 144 by the connecting section 141, can rise, and the display module 110, which is wound around the guide element 150, can be released from the guide element 150 and discharged through the outlet of the housing 120 to the outside of the housing 120. At this point, the display module 110, which has been completely led out of the housing 120, can display an image while maintaining a flat state, since the display module 110 is equipped with the support element 130. Fig. 3 is a cross-sectional view that schematically illustrates a display module of a display device according to one or more embodiments of the present disclosure. As illustrated in Fig. 3, the display module 110 can include the display panel PNL, which displays an image, the support element 130 under or on a rear surface of the display panel PNL, and an adhesive element 180 that attaches the support element 130 to the display panel PNL. The PNL scoreboard can be any of several types. For example, it can be an organic electroluminescence (EOL) scoreboard, a liquid crystal (LC) scoreboard, an electrophoresis (EC) scoreboard, a micro-LED scoreboard, a mini-LED scoreboard, etc. The PNL scoreboard can also be flexible, meaning it can be bent or folded. The support element 130 can be made of a metal such as aluminum (Al), magnesium (Mg), or stainless steel (SUS), but is not limited to such materials. The support element 130 can support the display panel PNL and ensure that the display module 110 remains flat and in a desired orientation, such as perpendicular to a floor, when the display module 110 lifts and exits the housing 120. A chamfer 132 or several chamfers 132 can be formed at a set interval on a lower surface (or a rear surface) of the support element 130, i.e., a surface that is not attached to the PNL scoreboard. The chamfer 132 can impart a bending property to the support element 130, which is made of metal, allowing the PNL scoreboard to be easily wound around the guide element 150 in a cylindrical shape. The adhesive element 180 can be a double-sided adhesive tape, but is not limited to this. As will be described in detail later, the adhesive element 180 can be configured with several areas of varying elasticity, which can prevent poor adhesion between the display panel PNL and the support element 130, which is caused by the adhesive element 180 being pulled off due to tension. This can be described in more detail later. A backplate can be located under or on the back of the PNL display panel, and a polarizing plate and a cover window can be located on or in front of the PNL display panel. Fig. 4 is a view illustrating a display panel from Fig. 3. The PNL display panel according to one or more embodiments of the present disclosure can use any of various display panels; however, an organic electroluminescent display panel can be described below as an example. As illustrated in Fig. 4, a buffer layer 242 can be formed on a substrate 240. The substrate 240 can be made of a plastic material such as polyimide, polymethyl methacrylate, polyethylene terephthalate, polyethersulfone, or polycarbonate, but is not limited to this. If the substrate 240 is formed from polyimide, for example, it may be configured with multiple layers made of polyimide, and an inorganic layer may further be arranged between the polyimide layers, but is not limited to this. The buffer layer 242 can serve to improve the adhesion between layers formed on it and the substrate 240, and to block various types of defects, such as alkaline components leaching from the substrate 240. Furthermore, the buffer layer 242 can serve to delay the diffusion of moisture or oxygen penetrating the substrate 240. The buffer layer 242 can be formed as a single layer of SiNx or SiOx, or as multiple layers using SiNx and / or SiOx. If the buffer layer 242 is formed with multiple layers, SiOx and SiNx can be arranged alternately. The buffer layer 242 can be omitted depending on the type and material of the substrate 240, the structure and type of thin-film transistor, etc. A thin-film transistor T can be formed on the buffer layer 242. For the sake of clarity, a driver thin-film transistor is illustrated, along with various thin-film transistors that can be arranged in the display device 100. However, other thin-film transistors containing a switching thin-film transistor can also be included in the display device 100. Furthermore, the thin-film transistor T is not limited to this structure, although the drawing illustrates the thin-film transistor T as having a top-mounted gate structure, and it can be implemented with a different structure, such as a bottom-mounted gate structure. The thin-film transistor T can include a semiconductor layer 212 arranged on the buffer layer 242, a gate insulating layer 244 formed on the semiconductor layer 212, a gate electrode 214 arranged on the gate insulating layer 244, an intermediate insulating layer 246 formed on the gate electrode 214, and a source electrode 215 and a drain electrode 216 arranged on the intermediate insulating layer 246. Semiconductor layer 212 can be formed from a polycrystalline semiconductor. For example, the polycrystalline semiconductor can be formed from a low-temperature, high-mobility polysilicon LTPS, but is not limited to this. Alternatively, the semiconductor layer 212 can be formed from an oxide semiconductor. For example, the semiconductor layer 212 can be formed from any of IGZO (indium gallium zinc oxide), IZO (indium zinc oxide), IGTO (indium gallium tin oxide), and IGO (indium gallium oxide), but is not limited to these. The semiconductor layer 212 can be configured to include a channel region 212a in a central area and a source region 212b and a drain region 212c, which are doping regions, on either side. The gate insulating layer 244 can be formed in a single layer or in multiple layers using an inorganic material such as SiOx and / or SiNx, but is not limited to this. The gate electrode 214 can be made of a metal. For example, the gate electrode 113 can be made in a single layer or in multiple layers using molybdenum (Mo) and / or aluminum (Al) and / or chromium (Cr) and / or gold (Au) and / or titanium (Ti) and / or nickel (Ni) and / or neodymium (Nd) and / or copper (Cu) and / or an alloy thereof, but is not limited to this. The intermediate insulating layer 246 can be formed in a single layer or in multiple layers using an organic material such as photoacrylic or an inorganic material such as SiNx and / or SiOx. Furthermore, the intermediate insulating layer 246 can be formed in multiple layers using an organic layer and an inorganic layer, but is not limited to this. The source electrode 215 and the drain electrode 216 can be formed in a single layer or in multiple layers using molybdenum (Mo) and / or aluminum (Al) and / or chromium (Cr) and / or gold (Au) and / or titanium (Ti) and / or nickel (Ni) and / or neodymium (Nd) and / or copper (Cu) and / or an alloy thereof, but are not limited to this. The source electrode 215 and the drain electrode 216 can be in contact with the source region 212b and the drain region 212c of the semiconductor layer 212 by means of contact holes formed in the gate insulating layer 244 and the intermediate insulating layer 246, respectively. A lower shielding metal layer can be arranged beneath the semiconductor layer 212 and on the substrate 240. The lower shielding metal layer can minimize or at least reduce a back-channel phenomenon caused by charges trapped in the substrate 240, thus preventing afterimages or performance degradation of the thin-film transistor T. The lower shielding metal layer can be formed in a single layer or in multiple layers using, but is not limited to, titanium (Ti) and / or molybdenum (Mo) and / or an alloy thereof. A planarization layer 248 can be formed on the substrate 240 on which the thin-film transistor T is arranged. The planarization layer 248 can be formed from an organic material such as photoacrylic, but is not limited to this, and can also be formed in several layers, each containing an inorganic layer and an organic layer. An organic light-emitting element (or organic light-emitting diode) D can be arranged on the planarization layer 248. The organic light-emitting element D can comprise a first electrode 232, a light-emitting layer 234, and a second electrode 236, such that light emitted by the light-emitting layer 234 can be emitted downwards through the first electrode 232. The first electrode 232 can be formed in a single layer or in multiple layers using a metal such as Ca, Ba, Mg, Al, Ag and an alloy thereof. A bank layer BNK can be formed at the boundary of each subpixel on the planarization layer 248. The bank layer BNK can be a type of partition that defines the subpixel. The bank layer BNK can separate each subpixel and prevent light of a specific color emitted by the neighboring pixel from mixing and being emitted. The bank layer BNK can be formed from, but is not limited to, an inorganic insulating material such as SiNx or SiOx and / or an organic insulating material such as BCB (benzocyclobutene), an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin or a polyimide resin and / or a photosensitive agent containing a black dye. The light-emitting layer 234 can contain a red (R) light-emitting layer formed in a red subpixel and emitting red light, a green (G) light-emitting layer formed in a green subpixel and emitting green light, and a blue (B) light-emitting layer formed in a blue subpixel and emitting blue light. Alternatively, the light-emitting layer 234 can be a white (W) light-emitting layer that emits white light. The light-emitting layer 234 may contain, but is not limited to, an organic light-emitting layer or an inorganic light-emitting layer such as a nano-sized material layer, a quantum dot layer, a light-emitting micro-LED layer or a light-emitting mini-LED layer. The light-emitting layer 234 may, but is not limited to, contain an electron injection layer and a hole injection layer that inject electrons and holes into an emission material layer, and an electron transport layer, a hole barrier layer, an electron barrier layer and a hole transport layer that transport the injected electrons and holes into the emission material layer. The second electrode 236 can be arranged on the light-emitting layer 234 and can be made of a transparent conductive material such as ITO (indium tin oxide) or IZO (indium zinc oxide) or a thin metal that transmits visible light, but is not limited to this. Furthermore, the organic light-emitting element D can be configured in a tandem structure. The tandem structure can contain multiple organic layers, and a charge-generating layer can be located between the organic layers. The charge-generating layer can serve to control a charge equilibrium between the multiple organic layers and can be configured with multiple layers, including a first charge-generating layer and a second charge-generating layer. The charge-generating layer can be an N-type charge-generating layer and a P-type charge-generating layer and can be formed with, but is not limited to, an organic layer doped with an alkali metal such as Li, Na, K, or Cs, or an alkaline earth metal such as Mg, Sr, Ba, or Ra. An encapsulation layer 280 can be formed on the second electrode 236 of the organic light-emitting element D. In this regard, a pixel shrinkage phenomenon, in which an emission area shrinks, or a defect such as a dark spot in the emission area can occur if the organic light-emitting element D is exposed to moisture or oxygen. Furthermore, moisture or oxygen oxidizes a metal electrode. The encapsulation layer 280 can block the ingress of moisture and oxygen from the outside and prevent defects in the organic light-emitting element D and in various electrodes. The encapsulation layer 280 can be configured with a first encapsulation layer 282, a second encapsulation layer 284 and a third encapsulation layer 286, but is not limited to this and can be configured with two, four or more layers. The first encapsulation layer 282 and the third encapsulation layer 286 can each be formed in a single layer or in multiple layers using an inorganic material such as SiOx, SION, or SiNx, and may furthermore contain, but are not limited to, an organic material between the inorganic layers. The second encapsulation layer 284 can be formed from, but are not limited to, an organic insulating material such as acrylic resin, epoxy resin, polyimide, polyethylene, or silicon oxycarbon (SiOC). The third encapsulation layer 286 can be formed from, but are not limited to, a thin metal (e.g., a flat gasket metal). A touch element can be arranged on the encapsulation layer 280. The touch element can be located in a display area to detect touch input. The touch element can detect external touch information using a user's finger or a stylus. Fig. 5 is a top view of a support element according to one or more embodiments of the present disclosure. As illustrated in Fig. 5, the support element 130 comprises a first support element or section or component 130a, a first support element or section or component 130b, and a third support element or section or component 130c. The first support element 130a may be a bendable area, and the second support element 130b and / or the third support element 130c may be flat, rigid, or non-bendable areas. The display panel may have a first area attached to, bonded to, or equivalent to the first support element, a second area attached to, bonded to, or equivalent to the second support element, and / or a third area attached to, bonded to, or equivalent to the first support element.Thus, the first area of ​​the scoreboard can be deformable, for example, because the first support element is deformable and / or because of its own physical structure, while the second and / or third areas of the scoreboard can be rigid or non-deformable, for example, because the second and / or third support element is deformable and / or because of its own physical structure. In one example, the entire scoreboard can be deformable, i.e., when not attached / glued to the support element, but once attached / glued to the support element, it can define the first area as deformable and the second and / or third area as non-deformable. The second and / or third region can be defined at the edge of the first region. For example, the second and third regions can be spaced apart, and the first region can be located between the second and third regions. The first support element 130a can be an area where the display module 110, e.g., the first section of the scoreboard, is wound around the guide element 150 when it is housed in the casing 120. The multiple chamfers 132 can be formed on the lower surface or the rear surface of the first support element 130a and / or correspond to the first section of the scoreboard. The second and / or third support elements 130b, 130c need not have chamfers. The first support element 130a can correspond to the display area of ​​the scoreboard PNL, i.e., the first area of ​​the scoreboard can be the display area or the display surface of the scoreboard, i.e., an area in which the images or the display are output. The second support element 130b and the third support element 130c can correspond to a contact area or an edge area of ​​the scoreboard PNL outside the display area, i.e., the second and / or the third area can be a contact area or an edge area of ​​the scoreboard PNL outside the display area, i.e., they can be non-displaying areas. In another example, the first to third areas of the scoreboard can all be used for displaying, but the second and third areas are not deformable. In the retractable or rollable display device 100 according to the present disclosure, one end of the display module 110 can be locked to the guide element 150, and the other end of the display module 110 can protrude from the housing 120 or can be arranged at an outlet of the housing 120. Furthermore, various control elements can be provided in one end of the display module 110, and a contact surface area to which a flexible printed circuit board is attached can be formed. The second support element 130b and the third support element 130c can be a locked area and a contact surface area where the display module 110 is locked to the guide element 150. The multiple chamfers 132 can be formed on the rear surface of the first support element 130a. The chamfers 132 can impart flexibility to the support element 130, which is made of a metal material, thus enabling the support element 130 to be wrapped around the guide element 150. In the drawing, the chamfers 132 are formed in the first support element 130a; however, the chamfers 132 can also be formed in the second support element 130b and / or the third support element 130c of the support element 130. The chamfers formed on the second support element 130b and / or the third support element 130c can provide the same flexibility as the chamfers formed on the first support element or they can provide a different flexibility, such as less flexibility than the chamfers formed on the first support element.In other words, the chamfers formed on the first support element and the chamfers formed on the second and / or third support element can be the same or different. The chamfers formed on the second support element and the chamfers formed on the third support element can be the same or different. Fig. 6 is a view that magnifies a section of a support element, and Fig. 7 is a view that illustrates a support element wound around a guide element. As illustrated in Fig. 6, the chamfers 132 can be configured to completely penetrate the support element 130, i.e., they can extend from one face to the opposite face of the support element. In this case, the width of the chamfer, or the space between the faces defining the chamfers, can decrease from one face (a face opposite the face to which the PNL scoreboard is attached) to the other face (the face to which the PNL scoreboard is attached). The reduction in width of the chamfer can be gradual down to a predetermined depth in the support element, and thereafter the width can be constant, thus optimizing flexibility and support. For example, the chamfer 132 can be configured in an essentially trapezoidal shape, but is not limited to this.Alternatively, the chamfers can extend from one surface (a surface opposite the surface to which the PNL scoreboard is attached) but cannot reach the other surface (the surface to which the PNL scoreboard is attached). The width of the chamfers can decrease from one surface towards the other. The width reduction of the chamfer can be gradual down to a predetermined depth in the support element, and thereafter the width can be constant, optimizing flexibility and support. For example, chamfer 132 can be configured in an essentially trapezoidal shape, but is not limited to this. As illustrated in Fig. 7, the support element 130 can be wound around the guide element 150 when the display module 110 is inserted or wound up and received in the housing 120. When the support element 130 is wound around the guide element 150, it can be bent. Here, the support element 130 can be bent to a specific curvature by decreasing the width of the chamfer 132. Furthermore, due to the trapezoidal shape of the chamfer 132, the support element 130 can be bent to the same curvature as the guide element 150 and wound around it. In other words, in the present disclosure, the support element 130 can be bent into a desired curvature by adjusting the width and shape of the chamfer 132. Therefore, the curvature of the bendable support element 130 can be adjusted by setting the width and shape of the chamfer 132. Furthermore, the curvature of the bendable support element 130 can be adjusted by setting a gap between the chamfers 132. Thus, the display module 110 in the present disclosure can be wound up and received around the guide element 150 by adjusting the width, shape and spacing of the chamfer 132 formed on the support element 130 in accordance with the curvature of the curved section 151 of the guide element 150. Since the display device 100 can be applied to various electronic devices according to one or more embodiments of the present disclosure, the housing 120 in which the display module 110 is received can be configured in various shapes depending on the shapes of the electronic devices. If the curved section 151 in which the display module 110 is received is configured in an elliptical, cylindrical shape, the curvature of the curved section 151 can vary accordingly depending on its position. In this case, the width, shape, and spacing of the chamfers 132 of the support element 130 can be adjusted differently depending on the positions of the first support element 130a according to the curvature of the curved section 151. Reference may be made below to Fig. 8, which can be understood as illustrating a top view corresponding to the top view in Fig. 5. As illustrated in Fig. 8, the adhesive element 180 can comprise a first adhesive element 180a, a second adhesive element 180b, and a third adhesive element 180c. The first adhesive element 180a can be attached to the first support element 130a, and the second adhesive element 180b and the third adhesive element 180c can be attached to the second support element 130b and the third support element 130c, respectively. The first adhesive element 180a can be attached to the first area of ​​the scoreboard, the second adhesive element 180b can be attached to the second area of ​​the scoreboard, and the third adhesive element 180c can be attached to the third area of ​​the scoreboard. In the present disclosure, the different configuration of the elastic moduli of the first, second, and third adhesive elements 180a, 180b, and 180c prevents the adhesive element 180 from being pulled off the display panel PNL and / or the support element 130. Here, the elastic modulus can be understood as the modulus of adhesion elasticity, i.e., as a measure of the stiffness of the adhesive after it has cured or dried, or as its modulus of elasticity or its Young's modulus. The first adhesive element 180a can be an area that, in a state where the first support element 130a is attached to the display area of ​​the PNL scoreboard, is wrapped around the curved section 151 of the guide element 150. The second adhesive element 180b and the third adhesive element 180c need not be areas to be wrapped, but can be flat areas. When the adhesive element 180 is attached to the support element 130 and the PNL scoreboard and wrapped around the curved section 151 of the guide element 150, stresses can thus be generated between the first adhesive element 180a, the second adhesive element 180b, and the third adhesive element 180c. Due to this stress differential, a specific area, such as the first adhesive element 180a, can be pulled away from the support element 130 and the PNL scoreboard. However, in the present disclosure, the elastic modulus of the first adhesive element 180a, which is wound around the curved section 151 of the guide element 150, can be adjusted to be smaller than the elastic moduli of the second adhesive element 180b and / or the third adhesive element 180c. By wrapping the adhesive element 180 around the curved section 151 of the guide element 150, the stresses in this area can thus be minimized or at least reduced, preventing the adhesive element 180 from being pulled away from the display panel PNL and the support element 130 in this area. Here, the elastic modulus of the second adhesive element 180b and the third adhesive element 180c can be the same, but is not limited to being the same. Fig. 9A is a cross-sectional view of a first adhesive element, and Fig. 9B is a cross-sectional view of a second and a third adhesive element. The cross-sections can be understood in the thickness direction, i.e., in a direction from the front surface of the support element to the rear surface of the display panel. As illustrated in Fig. 9A, the first adhesive element 180a can comprise a first foam element 186a and a first and a second adhesive layer 184a and 184b, which are formed on the upper and lower surfaces, i.e., the rear and front surfaces, respectively, of the first foam element 186a. The first adhesive element 180a can be understood as a double-sided adhesive tape. The first foam element 186a can be formed from a resin such as a urethane-based resin or an acrylic-based resin, but is not limited to this. In this case, the first foam element 186a can be formed with a thickness in the range of approximately 350 µm to 400 µm, but is not limited to this. The first and second adhesive layers 184a and 184b can be formed from various adhesive materials, which may be the same or different from each other. For example, the first and second adhesive layers 184a and 184b can be formed from an acrylic-based, silicone-based, or urethane-based adhesive material, but are not limited to these. The first and second adhesive layers 184a and 184b can have a thickness in the range of approximately 40 µm to 60 µm, but are not limited to this. As illustrated in Fig. 9B, the second and / or third adhesive elements 180b and 180c can each comprise a base element 182, a third and a fourth adhesive layer 184c and 184d arranged on the upper and lower surfaces, i.e., the rear and front surfaces, respectively, of the base element 182, a second foam element 186b arranged on an upper surface, i.e., a front or rear surface, of the fourth adhesive layer 184d, and a fifth adhesive layer 184e arranged on an upper surface, i.e., a front or rear surface, of the second foam element 186b. The base element 182 can be thinner than the second foam element 186b. The order of the arrangement of the layers, i.e., in the front-to-back direction, can differ from that shown in Fig.Figure 9B shows different configurations, but can still include the base element and the second foam element spaced apart by an adhesive layer. The second and / or third adhesive element 180b, 180c can be understood as double-sided adhesive tapes, i.e., the surface facing the scoreboard has an adhesive layer and the surface facing the support element has another adhesive layer, such as adhesive layers 184c or 184e. The basic element 182 can be made of a flexible plastic material such as polyethylene terephthalate, but is not limited to this. In this case, the basic element 182 can have a thickness in the range of 40 µm to 50 µm, but is not limited to this. The second foam element 186b can be made of a resin such as a urethane-based resin or an acrylic-based resin, but is not limited to this. In this case, the second foam element 186b can be formed with a thickness in the range of approximately 250 µm to 350 µm, but is not limited to this. The third to fifth adhesive layers 184c, 184d, and 184e can be formed from various adhesive materials, which may be the same or different from each other, or two may be the same and the third may be different. For example, the fourth adhesive layer 184d may be different from the third and fifth adhesive layers 184c and 184e, which may be the same. For instance, the third to fifth adhesive layers 184c, 184d, and 184e may be formed from an acrylic-based, silicone-based, or urethane-based adhesive material. The thickness of the third to fifth adhesive layers 184c, 184d, and 184e can be in the range of approximately 40 µm to 60 µm, but is not limited to this range. When the first adhesive element 180a is compared with the second and third adhesive elements 180b and 180c, the first adhesive element 180a is not provided with the base element 182, while the second and third adhesive elements 180b and 180c are provided with the base element 182. Depending on the presence or absence of the base element 182, a difference in the modulus of elasticity can occur between the first adhesive element 180a and the second and / or third adhesive elements 180b and 180c. Due to this difference in the modulus of elasticity, no peeling occurs due to a stress difference when the indicator module 110 is wrapped around the guide element 150. The first to third adhesive elements 180a, 180b, and 180c can be attached to the display panel PNL and the support element 130, respectively, while being spaced apart from each other by a predetermined distance d, e.g., as shown in Fig. 8. The separation distance d can serve to prevent the first to third adhesive elements 180a, 180b, and 180c from overlapping due to different moduli of elasticity when the first to third adhesive elements 180a, 180b, and 180c are attached separately. The separation distance d can be determined according to the moduli of elasticity of the first to third adhesive elements 180a, 180b, and 180c. The first to third adhesive elements 180a, 180b, and 180c can be formed in a sawtooth shape instead of a straight line at the boundaries between the first to third support elements 130a, 130b, and 130c. The sawtooth shape can be understood as a nested arrangement. This allows local stresses concentrated at the boundaries between the first to third support elements 130a, 130b, and 130c to be distributed, thus preventing the adhesive element (180) from pulling away at these boundaries. The sawtooth shape of the first to third adhesive element 180a, 180b and 180c at the boundaries can be triangular, but can also be formed in another shape. As illustrated in Fig. 10A and Fig. 10B, the sawtooth shape can be rectangular or circular. Fig. 11 is a view illustrating a further structure of an adhesive element according to one or more embodiments of the present disclosure. As illustrated in Fig. 11, the adhesive element 180 can contain a first, a fourth, a second and a third adhesive element 180a1, 180a2, 180b and 180c. Here, instead of having a first adhesive element, the first area of ​​the display panel can have several adhesive elements arranged side by side; that is, there can be a first adhesive element 180a1 and a fourth adhesive element 180a2, which can be areas that are wrapped around the curved section 151 of the guide element 150 or can be deformable, while the second adhesive element 180b and the third adhesive element 180c can be flat or non-deformable areas, not areas that are to be wrapped. The first and fourth adhesive elements described in this embodiment can be the same as the first adhesive element described in the preceding embodiments herein, as shown, for example, in Fig. 9A, and the second adhesive element 180b and the third adhesive element 180c can be the same as the second adhesive element 180b and the third adhesive element 180c described in the preceding embodiments herein, as shown, for example, in Fig.9B . In the adhesive element 180 of this structure, the areas that are wrapped around the curved section 151 of the guide element 150 can be separated from each other, thereby distributing stresses that may occur in these areas, i.e. curved areas, thus preventing the adhesive element 180 from being pulled off. As described above, in the present disclosure, by changing the modulus of elasticity of the adhesive element that attaches the support element to the scoreboard, stresses in the area that is wound in a curved shape can be minimized or at least reduced, thereby preventing the support element from being pulled away from the scoreboard in the wound area. Furthermore, by forming the boundaries of the adhesive elements of different areas in a sawtooth shape, local stresses that are concentrated at the boundaries between the areas can be distributed, thereby more effectively preventing the adhesive material from peeling off at the boundary areas. Furthermore, preventing the adhesive element from being removed eliminates the need to dispose of the detached, defective adhesive element. Thus, preventing the disposal of hazardous substances promotes environmental sustainability. The above detailed description explains the retractable display device; however, the present disclosure is not limited to any specific display device. For example, the present disclosure can be applied to various display devices, such as a foldable display device, a bendable display device, an extendable display device, and a flexible display device. When applied to such display devices, the modulus of elasticity of the adhesive element in a deformed region, such as a folding region, a bending region, an extension region, or a kinking region, can be adjusted to be smaller than the modulus of elasticity of the adhesive element in a non-deformed region, thereby preventing the adhesive element from detaching due to stress. It will be apparent to a person skilled in the art that various modifications and alterations can be made to the present disclosure without departing from the inventive concept or the scope of the disclosure. Therefore, it is intended that the present disclosure covers the modifications and alterations of this disclosure, provided they fall within the scope of the attached claims and their equivalents. QUOTES INCLUDED IN THE DESCRIPTION This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature KR 10-2024-0192120

[0001]

Claims

Display device (100) comprising: a display panel (PNL) containing a first area configured to display an image, a second area and a third area, wherein the first area is configured to be deformable, and wherein the second area and the third area are located outside the first area and are configured to be non-deformable; a support element (130) located on a rear side of the display panel and configured to support the first area, the second area and the third area of ​​the display panel (PNL);and an adhesive element (180) that attaches the support element (130) to the scoreboard (PNL), wherein the adhesive element (180) comprises: a first adhesive element (180a) that attaches the first area of ​​the scoreboard (PNL) to the support element, a second adhesive element (180b) that attaches the second area of ​​the scoreboard (PNL) to the support element, and a third adhesive element (180c) that attaches the third area of ​​the scoreboard (PNL) to the support element, wherein the elastic modulus of the first adhesive element (180a) is less than the elastic modulus of the second adhesive element (180b) and the elastic modulus of the third adhesive element (180c). Display device (100) comprising: a display panel (PNL) containing a first area configured to display an image, a second area and / or a third area, wherein the first area is configured to be deformable, and wherein the second area and / or the third area are located outside the first area and are configured to be non-deformable; a support element (130) located on a rear side of the display panel and configured to support the first area, the second area and the third area of ​​the display panel (PNL);and an adhesive element (180) that attaches the support element (130) to the scoreboard (PNL), wherein the adhesive element (180) comprises: a first adhesive element (180a) that attaches the first area of ​​the scoreboard (PNL) to the support element, and a second adhesive element (180b) that attaches the second area of ​​the scoreboard (PNL) to the support element, and / or a third adhesive element (180c) that attaches the third area of ​​the scoreboard (PNL) to the support element, wherein an elastic modulus of the first adhesive element (180a) is less than an elastic modulus of the second adhesive element (180b) and / or an elastic modulus of the third adhesive element (180c). Display device according to claim 1 or 2, wherein the second area and the third area are spaced apart from each other and the first area is defined between them, and / or wherein the second area and the third area define two different boundaries of the first area. Display device according to one of the preceding claims, wherein the first adhesive element (180a), the second adhesive element (180b) and the third adhesive element (180c) are configured as double-sided adhesive tapes. Display device according to one of the preceding claims, wherein the boundary surfaces between the first adhesive element (180a) and the second adhesive element (180b) and / or the third adhesive element (180c) are formed in a sawtooth shape. Display device according to claim 5, wherein the sawtooth shape comprises either a triangular shape, a right-angled shape or a circular shape. Display device according to one of the preceding claims, wherein the first adhesive element (180a) comprises: a first foam element (186a); a first adhesive layer (184a) formed on a surface of the first foam element (186a) facing the display panel (PNL); and a second adhesive layer (184b) formed on a further surface of the first foam element (186a) facing the support element (PNL). Display device according to claim 6, wherein the first foam element (186a) contains a resin; and / or wherein the first adhesive element (180a) comprises two areas (180a1, 180a2) which are arranged side by side and separated from each other. Display device according to one of the preceding claims, wherein the second adhesive element (180b) and / or the third adhesive element (180c) comprise: a base element (182); a third adhesive layer (184c) arranged on the base element (182) and facing one of the display panel (PNL) and the support element (130); a second foam element (186b); a fourth adhesive layer (184d) arranged between the base element and the second foam element (186b); and a fifth adhesive layer (184e) arranged on the second foam element (186b) and facing the other of the display panel (PNL) and the support element (130). Display device according to claim 9, wherein the second foam element (186b) contains a resin. Display device according to claim 9 or 10, wherein the base element (182) contains a plastic material or contains a flexible plastic material. Display device according to one of the preceding claims, wherein the carrier element (130) contains a metal material. Display device according to one of the preceding claims, wherein the support element (130) comprises: a first support element (130a) which is attached to the first area of ​​the display panel (PNL) by the first adhesive element (180a), wherein the first adhesive element (180a) is arranged on a first surface of the first support element (130a) which faces the display panel (PNL); a second support element (130b) which is attached to the second area of ​​the display panel (PNL) by the second adhesive element (180b), wherein the second adhesive element (180b) is arranged on a first surface of the second support element (130b) which faces the display panel (PNL); and a third support element (130c) which is attached to the third area of ​​the scoreboard (PNL) by the third adhesive element (180c), wherein the third adhesive element (180c) is arranged on a first surface of the third support element (130c) which faces the scoreboard (PNL). Display device according to claim 13, wherein several chamfers (132) are formed on a second surface of the first support element (130a), which is opposite the first surface of the first support element (130a). Display device according to claim 14, wherein a first chamfer (132) of the several chamfers is formed in a trapezoidal shape and penetrates the first support element (130a) from the first surface of the first support element (130a) to the second surface of the first support element (130a). Display device according to one of the preceding claims, wherein the display panel (PNL) is a retractable or rollable display panel (PNL). Display device according to claim 16, further comprising: a housing (120) for receiving the display panel (PNL); and a guide element (150) for guiding the display panel (PNL) into or out of the housing when the display panel (PNL) is wound up or unwound. Display device according to claim 17, wherein the guide element (150) is formed in a cylindrical shape and wherein the guide element (150) includes a curved section around which the display panel (PNL) is wound. Display device according to claim 18, when dependent on one of claims 14 and 15, wherein a width of the chamfers (132) and / or a space between the chamfers are determined according to a curvature of the curved section. Display device according to one of the preceding claims, wherein the modulus of elasticity of the second adhesive element (180b) and the modulus of elasticity of the third adhesive element (180c) are the same.

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