Adhesive member and display device including the same

Abstract

Embodiments of the present disclosure relate to an adhesive member and a display device including the same, and more particularly, may provide a display device including: a display panel assembly that implements an image; a support frame supporting a rear surface of the display panel assembly; and an adhesive member disposed between the display panel assembly and the support frame to couple the display panel assembly and the support frame, in which the adhesive member has protruding patterns on one surface or two opposite surfaces thereof, the protruding patterns having different heights.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to an adhesive member and a display device including the same. Background Art

[0002] The advent of the information age has led to the rapid development of displays for visually expressing electrical information signals. Therefore, various display devices that are thin and light, have low power consumption, and have excellent performance have been developed.

[0003] Specific examples of such display devices include a liquid crystal display device (LCD), a plasma display panel device (PDP), a field emission display device (FED), an organic light emitting display device (OLED), and the like.

[0004] Recently, flexible display devices that are made of flexible materials such as plastics rather than non-flexible materials such as glass substrates to be able to bend like paper without reducing display performance are rapidly attracting attention as next-generation display devices. In addition, flexible display devices with large areas have been developed and commercialized in recent years for commercial purposes and consumer needs.

[0005] Such a large-area flexible display device may generally include a display panel assembly for displaying an image, a support frame for supporting a rear surface of the display panel assembly, and an adhesive member for coupling the display panel assembly and the support frame. In this case, the adhesive member may be formed of a double-sided tape and may be cut to fit the size of the display panel assembly. In other words, the adhesive member may be cut in proportion to the size of the display panel assembly.

[0006] The description provided in the Background section should not be assumed to be prior art merely because it is mentioned in the Background section or associated with the Related Art section.The Background section may include information that describes one or more aspects of the subject technology. Summary of the invention

[0007] The inventors of the present disclosure newly recognized that as the display panel assembly becomes larger, the attachment area of ​​the adhesive member also increases, which leads to the following problems: the display panel assembly and the adhesive member are not properly attached together and many bubbles are formed between the display panel assembly and the adhesive member during the attachment process. Specifically, more bubbles tend to form in the curved area of ​​the display panel assembly. Due to the heat generated when the display panel assembly is driven, the bubbles formed between the display panel assembly and the adhesive member may expand as the internal pressure thereof increases, resulting in delamination between the display panel assembly and the supporting frame and deterioration of the visibility of the display device.

[0008] Therefore, the inventors of the present disclosure recognized the above-mentioned limitations and other limitations associated with the related art, and conducted various experiments to realize a display device that is capable of preventing or reducing the formation of bubbles between a display panel assembly and an adhesive member when the adhesive member is attached to a large-area display panel assembly by, for example, forming a micro-irregular pattern for discharging bubbles on the surface of the adhesive member.

[0009] One aspect of the present disclosure is to provide a display device including an adhesive member including a pattern area having a protrusion pattern and a non-pattern area without the protrusion pattern, thereby removing bubbles formed between a display panel assembly and the adhesive member through the pattern area during an attachment process and simultaneously enhancing adhesion through the non-pattern area.

[0010] Another aspect of the present disclosure is to provide a display device capable of preventing or reducing delamination of a display panel assembly and degradation of visibility due to bubbles by minimizing or reducing bubbles formed between the display panel assembly and an adhesive member.

[0011] Additional features and aspects of the present disclosure will be described in part in the following description, and in part will become apparent from the description, or may be learned by the practice of the inventive concept provided herein. Other features and aspects of the inventive concept may be realized and obtained by the structures indicated in the written description or structures derivable therefrom, as well as the attached claims and drawings.

[0012] Embodiments of the present disclosure may provide an adhesive member for connecting a display panel assembly for realizing an image and a supporting frame for supporting a rear surface of the display panel assembly, the adhesive member including a base and an adhesive portion formed on one side or two opposite sides of the base and provided with protrusion patterns having different heights.

[0013] An embodiment of the present disclosure may provide a display device, which includes a display panel assembly for realizing an image, a supporting frame supporting a rear surface of the display panel assembly, and an adhesive member arranged between the display panel assembly and the supporting frame to connect the display panel assembly to the supporting frame, wherein the adhesive member has a protrusion pattern on one surface or two opposite surfaces thereof, and the protrusion pattern has different heights.

[0014] According to an embodiment of the present disclosure, a display device can be provided that is capable of preventing or reducing the formation of bubbles between a display panel assembly and an adhesive member when the adhesive member is attached to a large-area display panel assembly by forming a micro-irregular pattern for discharging bubbles on the surface of the adhesive member.

[0015] According to an embodiment of the present disclosure, a display device capable of increasing a contact area with a display panel assembly by forming a micro irregular pattern on a surface of an adhesive member, thereby enhancing adhesion between the display panel assembly and the adhesive member may be provided.

[0016] According to an embodiment of the present disclosure, a display device capable of preventing or reducing delamination of a display panel assembly and degradation of visibility due to bubbles by minimizing or reducing bubbles formed between the display panel assembly and an adhesive member may be provided.

[0017] According to an embodiment of the present disclosure, a display device capable of realizing a single-body product having simplified and unified components by coupling a display panel assembly and a supporting frame using only an adhesive member without using a fastening member such as a bolt may be provided.

[0018] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the inventive concepts as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which may be included to provide a further understanding of the disclosure and may be incorporated in and constitute a part of this disclosure, illustrate embodiments of the disclosure and together with the description serve to explain various principles of the disclosure.

[0020] The above and other objects, features and advantages of the present disclosure will be more clearly understood through the following detailed description in conjunction with the accompanying drawings, in which:

[0021] Figure 1 is a cross-sectional view illustrating a bonding member according to an embodiment of the present disclosure;

[0022] Figure 2 is an exploded perspective view illustrating a display device according to an embodiment of the present disclosure;

[0023] Figure 3 This is an example Figure 2 A diagram of a process of attaching an adhesive member to a display panel assembly; and

[0024] Figure 4 , Figure 5 and Figure 6 is a cross-sectional view illustrating the shape of a protrusion pattern according to a bending structure of a flexible display device.

[0025] Throughout the drawings and detailed description, unless otherwise described, the same drawing reference numerals should be understood to refer to the same elements, features, and structures. The relative sizes and depictions of these elements may be exaggerated for clarity, illustration, and convenience. DETAILED DESCRIPTION

[0026] In the following description of examples or embodiments of the present disclosure, reference will be made to the accompanying drawings, in which specific examples or embodiments that can be implemented are illustrated by way of illustration, and the same reference numerals and symbols may be used in the accompanying drawings to represent the same or similar components, even when they are shown in different drawings from each other. In addition, in the following description of examples or embodiments of the present disclosure, when it is determined that a detailed description of the well-known functions and components included therein may make the subject matter of some embodiments of the present disclosure unclear, such description will be omitted. The described progress of the processing steps and / or operations is an example; however, the order of the steps and / or operations is not limited to the order set forth herein, and may be changed as known in the art, except for the steps and / or operations that must occur in a specific order. The names of the corresponding elements used in the following description may be selected only for the convenience of writing the specification, and therefore may be different from the names used in the actual product. The use of terms such as "including", "having", "including", "consisting of", "consisting of" and "formed of" herein is generally intended to allow the addition of other components, unless these terms are used with the term "only". As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise.

[0027] The advantages and features of the present disclosure and methods for implementing the same will become clear by reference to the following example embodiments described in detail in conjunction with the accompanying drawings. However, the present disclosure can be implemented in different forms and should not be construed as being limited to the example embodiments set forth herein. On the contrary, these example embodiments can be provided so that the present disclosure can be sufficiently thorough and complete to help those skilled in the art fully understand the scope of the present disclosure. In addition, the present disclosure will only be limited by the scope of the appended claims. Any implementation described herein as an "example" is not necessarily to be construed as being preferred or advantageous over other implementations.

[0028] The shapes, sizes, proportions, angles, quantities, etc. illustrated in the drawings describing various example embodiments of the present disclosure are given only by way of example. Therefore, the present disclosure is not limited to the illustrations in the drawings. Unless otherwise specified, the same or similar elements are represented by the same or similar reference numerals throughout the specification. In addition, in the following description, when a detailed explanation of a related known function or configuration may unnecessarily obscure the main points of the present disclosure, a detailed description of such a related known function or configuration may be omitted.

[0029] When describing a positional relationship, for example, when using "on", "above", "below", "over", "under", "down", "adjacent", "close to", or "adjacent", "beside", "next to", etc. to describe the positional relationship between two components, one or more other components may be arranged between the two components, unless more restrictive terms such as "immediately", "directly" or "closely" are used. For example, when a structure is described as being located "on", "above", "below", "above", "below", "below", "adjacent to" another structure, "close to" another structure, or "adjacent to" another structure, "beside", "next to" another structure, this description should be interpreted as including the situation where the structures are in contact with each other and the situation where a third structure is arranged or inserted therebetween. In addition, the terms "left", "right", "top", "bottom", "downward", "upward", "up", "down", etc. refer to an arbitrary reference system.

[0030] The term "at least one" should be understood to include any and all combinations of one or more associated listed items. For example, the meaning of "at least one of the first element, the second element, and the third element" covers the combination of all three listed elements, the combination of any two of the three elements, and each individual element (the first element, the second element, or the third element).

[0031] Terms such as "first", "second", "A", "B", "(A)" or "(B)" may be used herein to describe elements of the present disclosure. Each of these terms is not used to limit the nature, sequence, order or quantity of the elements, etc., but is only used to distinguish the corresponding element from other elements.

[0032] When it is mentioned that a first element is "connected or coupled", "contacted or overlapped", etc. with a second element, it should be interpreted that not only the first element can be "directly connected or coupled" or "directly contacted or overlapped" with the second element, but also a third element can be "interposed" between the first element and the second element, or the first element and the second element can be "connected or coupled", "contacted or overlapped" with each other through a fourth element, etc. Here, the second element can be included in at least one element of the two or more elements that are "connected or coupled", "contacted or overlapped", etc. with each other.

[0033] When time-related terms such as “after,” “subsequently,” “next,” “before,” etc. are used to describe a process or operation of an element or configuration, or a flow or step in an operation, process, or method of manufacture, these terms may be used to describe non-sequential or non-sequential processes or operations unless used with the terms “directly” or “immediately following.”

[0034] Furthermore, when referring to any dimension, relative size, etc., it should be considered that the numerical value or corresponding information (e.g., level, range, etc.) of an element or feature includes a tolerance or error range that may be caused by various factors (e.g., process factors, internal or external influences, noise, etc.), even in the case where no relevant description is specified. In addition, the term "may" fully encompasses all meanings of the term "can".

[0035] The features in the various embodiments of the present disclosure may be partially or entirely connected or combined with each other, and may be technically interoperable and driven in various ways as those skilled in the art can fully understand. The embodiments of the present disclosure may be implemented independently of each other, or may be implemented together in a mutually dependent relationship.

[0036] Unless otherwise defined, the terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which the example embodiments belong. It will also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted as having, for example, a meaning consistent with their meaning in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense unless expressly defined as such herein. For example, the term "component" or "unit" may apply, for example, to a separate circuit or structure, an integrated circuit, a computing block of a circuit device, or any structure configured to perform the described function, as will be understood by one of ordinary skill in the art.

[0037] Hereinafter, various embodiments of the present disclosure are described in detail with reference to the accompanying drawings. In addition, each bonding member according to all embodiments of the present disclosure and all components of each display device including the same are operationally connected and configured. For ease of description, the scale of each element illustrated in the accompanying drawings is different from the actual scale, and is therefore not limited to the scale shown in the drawings.

[0038] Figure 1 is a cross-sectional view of a bonding member according to an embodiment of the present disclosure, and Figure 2 Yes Figure 1 An exploded perspective view of a display device of a bonding member.

[0039] Reference Figure 1 to Figure 2 The adhesive member 100 is used to couple between the display panel assembly 200 realizing an image and the support frame 300 supporting the rear surface of the display panel assembly 200 , and may include a base portion 110 and an adhesive portion 120 .

[0040] The base 110 may be formed in a flat plate shape and may be formed of an insulating material. For example, the base 110 may be formed of a flexible material such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonate (PC), or the like.

[0041] The adhesive part 120 may be formed on one side or two opposite sides of the base part 110 and may have a protrusion pattern 121 having different heights.

[0042] The protrusion pattern 121 may be formed into an irregular or uneven shape in which a plurality of protrusions are spaced apart from each other. For example, the adhesive member 100 may be provided in a state pre-attached to the display panel assembly 200. In this case, when bubbles are formed between the display panel assembly 200 and the adhesive member 100, the bubbles may expand due to the heat generated when the display panel assembly 200 is driven. In this case, the display panel assembly 200 may be peeled off and visibility may be reduced. When a protrusion pattern 121 having an irregular or uneven structure with different heights is formed on the surface of the adhesive member 100 as in the present embodiment, during the attachment process, the bubbles may be discharged through the space between the patterns. Therefore, the bonding strength between the display panel assembly 200 and the adhesive member 100 can be enhanced, thereby preventing or reducing the peeling of the display panel assembly 200 and the degradation of visibility due to the generation of bubbles.

[0043] Each protrusion pattern 121 may be formed into a tapered shape having a narrowed width toward the end. Due to the shape of the protrusion pattern 121, a channel through which bubbles can be removed is formed between the protrusions, and more bubbles can be removed. In addition, due to the tapered structure, interference between the protrusions of the protrusion pattern 121 that are compressed and expanded during the attachment process can be prevented or reduced. However, the present disclosure is not limited thereto, and for example, the protrusion pattern 121 may be formed into various other shapes other than the tapered shape.

[0044] The end of the protrusion pattern 121 may be formed in a straight line shape or a dome shape. When the end of the protrusion pattern 121 is formed in a straight line shape, the contact area with the object may be increased, thereby increasing the adhesive force. In addition, when the end of the protrusion pattern 121 is formed in a dome shape, the protrusion pattern 121 may be better compressed during the attachment process compared to the straight line shape, thereby facilitating attachment.

[0045] The protrusion pattern 121 may include first protrusions 121 a and second protrusions 121 b .

[0046] The first protrusion 121a may protrude in one direction. A plurality of first protrusions 121a may be disposed to be spaced apart from each other. Each second protrusion 121b may be disposed between the first protrusions 121a and may protrude in a size smaller than the height of the first protrusion 121.

[0047] The height of the second protrusion 121b may be formed to be at least half or less than the height of the first protrusion 121a. For example, the first protrusion 121a may be set to have a height of 50 μm to 80 μm (specifically, 60 μm to 70 μm, or 65 μm), and the second protrusion 121b may be set to have a height of 20 μm to 30 μm (specifically, 25 μm). When the height difference between the first protrusion 121a and the second protrusion 121b is less than 30 μm, the bubble removal efficiency may be reduced, and when the height difference between the first protrusion 121a and the second protrusion 121b exceeds 60 μm, the adhesive strength may be reduced.

[0048] In this way, since the height of the second protrusion 121b is formed to be small, an air passage through which air can be discharged can be formed between the first protrusions 121a. Therefore, bubbles can be discharged through the air passage during the attachment process of the adhesive member 100, thereby enhancing the adhesive force between the support frame 300 or the display panel assembly 200 as an object to be attached.

[0049] The sum of the maximum width of the first protrusion 121a and the maximum width of the second protrusion 121b may be at least 1200 μm or less. For example, the sum of the maximum width of the first protrusion 121a and the maximum width of the second protrusion 121b may be set to 1000 μm to 1200 μm. This is designed in consideration of the height of the first protrusion 121a and the second protrusion 121b, and when designed in this way, bubbles generated during the attachment process can be discharged seamlessly while enhancing the adhesive force.

[0050] It should be noted that although Figure 1 As shown, the irregular or uneven shape of the protrusion pattern 121 is formed by alternately arranging the first protrusions 121a and the second protrusions 121b having different heights, but the present disclosure is not limited thereto. For example, the first protrusions 121a and the second protrusions 121b may be irregularly arranged on the base 110. As another example, the second protrusions 121b may be omitted, and only the first protrusions 121a are formed to be spaced apart from each other on the base 110. As yet another example, the adhesive portion 120 may have a plurality of grooves, holes, or recessed patterns arranged regularly or irregularly therein. In other words, the shape or structure of the protrusion pattern 121 according to an embodiment of the present disclosure is not limited to Figure 1 The shape or structure shown, and may have various other arrangements as long as an air passage through which air can be discharged is formed in the protrusion pattern 121 during the attachment process of the adhesive member 100 .

[0051] Figure 2 is an exploded perspective view of a display device according to an embodiment of the present disclosure, and Figure 3 This is an example Figure 2FIG. 1 is a diagram of a process of attaching an adhesive member of FIG. 1 to a display panel assembly. In this embodiment, the description mainly focuses on differences from the above-described embodiment.

[0052] Reference Figures 2 to 3 , the display device 1 may include an adhesive member 100 , a display panel assembly 200 , and a supporting frame 300 .

[0053] The display panel assembly 200 is a component for realizing an image, and a light emitting element for realizing an image, a circuit, a line, and a component for driving the light emitting element may be disposed thereon. Figure 2 The rear surface of the display panel assembly 200 is illustrated, and although not shown, a display surface may be located on the front surface.

[0054] The support frame 300 may support the rear surface of the display panel assembly 200. The rear surface of the display panel assembly 200 may be protected by the support frame 300.

[0055] The adhesive member 100 may be disposed between the display panel assembly 200 and the support frame 300, and couple the display panel assembly 200 with the support frame 300. For example, the adhesive member 100 may be extendedly disposed on the rear edge of the display panel assembly 200. The attachment position of the adhesive member 100 is not limited to the illustrated example, and may vary depending on the shape of the display panel assembly 200.

[0056] The protrusion patterns 121 having different heights may be formed on one surface or two opposite surfaces of the adhesive member 100. Specifically, the adhesive member 100 may include a base 110 and an adhesive portion 120, the adhesive portion 120 being formed on one side or two opposite sides of the base 110 and provided with protrusion patterns 121 having different heights. In other words, the protrusion pattern 121 may be formed by forming irregularities such that a plurality of protrusions are spaced apart from each other. Each protrusion pattern 121 may be formed in a tapered shape whose width decreases toward an end, and the end may be formed in a straight line shape or a dome shape.

[0057] The protrusion pattern 121 may include first protrusions 121 a and second protrusions 121 b .

[0058] The first protrusion 121a may protrude in one direction. A plurality of first protrusions 121a may be arranged to be spaced apart from each other. Each second protrusion 121b may be arranged between the first protrusions 121a and may protrude with a size smaller than the height of the first protrusion 121. For example, the first protrusion 121a may be arranged to have a height of 50 μm to 80 μm (specifically, 60 μm to 70 μm, or 65 μm), and the second protrusion 121b may be arranged to have a height of 20 μm to 30 μm (specifically, 25 μm).

[0059] In this way, since the protrusion patterns 121 having different heights are formed on one surface or both opposite surfaces of the adhesive member 100, bubbles may be prevented or reduced from being formed between the display panel assembly 200 and the adhesive member 100 during the attaching process of the display panel assembly 200 and the adhesive member 100. In other words, Figure 3 As shown, when the adhesive member 100 is brought into close contact with one surface of the display panel assembly 200 and then pressed, bubbles can be discharged through the space provided between the first protrusions 121a. Therefore, the adhesive strength between the display panel assembly 200 and the adhesive member 100 can be enhanced, thereby preventing or reducing the display panel assembly 200 from being peeled off due to the generation of bubbles and preventing or reducing the degradation of visibility.

[0060] Specifically, when the adhesive member 100 is attached to the display panel assembly 200 having a large area, more bubbles may be formed. When the display panel assembly 200 and the support frame 300 are attached using the adhesive member 100 having the protrusion pattern 121 formed thereon, the display panel assembly 200 can be stably coupled to the support frame 300 without delamination.

[0061] According to an embodiment of the present disclosure, a heat dissipation plate 210 formed of, for example, but not limited to, a metal such as aluminum may be further provided on the rear surface of the display panel assembly 200. Thus, when the heat dissipation plate 210 is provided on the rear surface of the display panel assembly 200, the adhesive member 100 may be provided between the heat dissipation plate 210 and the support frame 300.

[0062] Figures 4 to 6 is a cross-sectional view illustrating the shape of a protrusion pattern 121 according to a curved structure of a flexible display device.

[0063] like Figures 4 to 6 As shown, the adhesive portion 120 may include a pattern area in which the protrusion pattern 121 is formed and a non-pattern area in which the protrusion pattern 121 is not formed. This is because the protrusion pattern 121 can easily discharge bubbles, but may reduce the contact area with the object to be attached, thereby deteriorating the attachment performance. Therefore, when the protrusion pattern 121 is not formed on the entire front surface of the adhesive portion 120 and is formed only on a portion of the adhesive portion 120, bubbles can be removed by the pattern area during the attachment process, and the adhesive strength can be enhanced by the non-pattern area.

[0064] In addition, the display panel assembly 200 may be formed to be bendable, and a curve may be formed on at least a portion of the display panel assembly 200, and the height and width of the protrusion pattern 121 may vary with the shape of the curve. Figures 4 to 6The structure of the protrusion pattern 121 according to the curved line shape of the display panel assembly 200 is described.

[0065] like Figure 4 As shown, the central portion of the display panel assembly 200 may be bent to form a curve having two opposite sides symmetrical about the bending axis BX. In addition, the height of the protrusion pattern 121 formed on the adhesive member 100 may be formed to decrease from a portion facing the bending axis BX toward the outside.

[0066] As described above, when the micro patterns are formed to decrease in height outward from the bending axis BX according to the curved shape, the portion where the bending axis BX is located may be prevented or reduced from being lifted, which brings the adhesive member 100 into close contact with the display panel assembly 200 .

[0067] like Figure 5 As shown, one side portion of the display panel assembly 200 may be bent to form an asymmetric curve about the bending axis BX. In addition, the protrusion pattern 121 formed on the adhesive member 100 may be formed to increase in width outward from a portion facing the bending axis BX.

[0068] In other words, by increasing the density of the protrusion pattern 121 in the portion further bent due to bending, bubbles can be discharged more seamlessly during the attachment process of the adhesive member 100, and the adhesiveness can be enhanced. In addition, in order to prevent or reduce the bending axis BX from being lifted from the portion where the bending axis BX is located, the height of the protrusion pattern 121 formed on the portion of the bending axis BX can be greater than the height of the protrusion pattern 121 formed outside the bending axis BX.

[0069] like Figure 6 As shown, two or more portions of the display panel assembly 200 may be bent to form at least one of a convex curve and a concave curve about each bending axis BX. The width of the protrusion pattern 121 formed at a portion facing the convex curve may be smaller than the width of the protrusion pattern 121 formed at another portion facing the concave curve.

[0070] In other words, by forming the adhesive member 100 to have different densities according to the bending direction of the curve, bubbles may be discharged more seamlessly during the attaching process of the adhesive member 100 , and adhesiveness may be enhanced.

[0071] As described above, since micro irregular patterns are formed on the surface of the adhesive member 100 so that bubbles can be discharged, bubbles formed between the display panel assembly 200 and the adhesive member 100 can be prevented or reduced when the adhesive member 100 is attached to the display panel assembly 200 having a large area.

[0072] Furthermore, by minimizing or reducing bubbles formed between the display panel assembly 200 and the adhesive member 100, delamination of the display panel assembly 200 and degradation of visibility due to the occurrence of bubbles may be prevented or reduced.

[0073] The embodiments of the present disclosure described above are briefly described below.

[0074] According to an embodiment of the present disclosure, an adhesive member for connecting a display panel assembly for realizing an image and a supporting frame for supporting a rear surface of the display panel assembly may include a base and an adhesive portion formed on one side or two opposite sides of the base and provided with a protrusion pattern of an uneven structure.

[0075] According to an embodiment of the present disclosure, the protrusion patterns may have different heights.

[0076] According to an embodiment of the present disclosure, a protrusion pattern may be formed by forming irregularities in which a plurality of protrusions are spaced apart from each other.

[0077] According to an embodiment of the present disclosure, the protrusion pattern may be formed in a tapered shape whose width decreases toward an end thereof.

[0078] According to an embodiment of the present disclosure, an end portion of the protrusion pattern may be formed in a straight line shape or a dome shape.

[0079] According to an embodiment of the present disclosure, the protrusion pattern may include a plurality of first protrusions protruding in one direction and spaced apart from each other, and second protrusions disposed between the first protrusions and protruding to a size smaller than a height of the first protrusions.

[0080] According to an embodiment of the present disclosure, the height of the second protrusion may be formed to be at least half or less than the height of the first protrusion.

[0081] According to an embodiment of the present disclosure, a sum of a maximum width of the first protrusion and a maximum width of the second protrusion may be at least 1200 μm or less.

[0082] According to an embodiment of the present disclosure, the adhesive part may include a pattern region in which the protrusion pattern is formed and a non-pattern region in which the protrusion pattern is not formed.

[0083] According to an embodiment of the present disclosure, the display panel assembly may be formed to be bendable to form a curve in at least a portion thereof. The height and width of the protrusion pattern may vary according to the shape of the curve.

[0084] According to an embodiment of the present disclosure, a display device may include a display panel assembly for realizing an image, a supporting frame for supporting a rear surface of the display panel assembly, and an adhesive member arranged between the display panel assembly and the supporting frame to connect the display panel assembly to the supporting frame, wherein the adhesive member has a protrusion pattern with an uneven structure on one or two relative surfaces thereof.

[0085] According to an embodiment of the present disclosure, the protrusion patterns may have different heights.

[0086] According to an embodiment of the present disclosure, an adhesive member may include a base portion and an adhesive portion formed on one side or two opposite sides of the base portion and provided with a protrusion pattern.

[0087] According to an embodiment of the present disclosure, a protrusion pattern may be formed by forming irregularities in which a plurality of protrusions are spaced apart from each other.

[0088] According to an embodiment of the present disclosure, each protrusion pattern may be formed in a tapered shape having a width decreasing toward an end portion, and the end portion may be formed in a straight line shape or a dome shape.

[0089] According to an embodiment of the present disclosure, the protrusion pattern may include a plurality of first protrusions protruding in one direction and spaced apart from each other and a second protrusion disposed between the first protrusions and protruding to a size smaller than the height of the first protrusion. The height of the second protrusion may be formed to be at least half or less than the height of the first protrusion.

[0090] According to an embodiment of the present disclosure, the adhesive part may include a pattern region in which the protrusion pattern is formed and a non-pattern region in which the protrusion pattern is not formed.

[0091] According to an embodiment of the present disclosure, a central portion of a display panel assembly may be bent to form a curve having two opposite sides symmetrical about a bending axis, and a protrusion pattern formed on an adhesive member may be formed to decrease in height outward from a portion facing the bending axis.

[0092] According to an embodiment of the present disclosure, a portion of one side of the display panel assembly may be bent to form an asymmetric curve about a bending axis. The protrusion pattern formed on the adhesive member may be formed to increase in width outward from a portion facing the bending axis.

[0093] According to an embodiment of the present disclosure, a height of a protrusion pattern formed at a portion of the bending axis may be greater than a height of a protrusion pattern formed outside the bending axis.

[0094] According to an embodiment of the present disclosure, two or more portions of the display panel assembly may be bent to form at least one of a convex curve and a concave curve about each bending axis. The width of the protrusion pattern formed on the portion facing the convex curve may be smaller than the width of the protrusion pattern formed on the other portion facing the concave curve.

[0095] According to an embodiment of the present disclosure, a heat dissipation plate may be further provided on the rear surface of the display panel assembly, and an adhesive member may be provided between the heat dissipation plate and the support frame.

[0096] The above description is presented to enable any person skilled in the art to make and use the technical concept of the present disclosure, and is provided in the context of a specific application and its requirements. Various modifications, additions and substitutions to the described embodiments will be apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the present disclosure. The above description and accompanying drawings provide examples of the technical concept of the present disclosure for illustrative purposes only. For example, the disclosed embodiments are intended to illustrate the scope of the technical concept of the present disclosure.

[0097] CROSS-REFERENCE TO RELATED APPLICATIONS

[0098] This application claims the benefit of and priority to Korean Patent Application No. 10-2023-0152723 filed in Korea on November 7, 2023, the entire contents of which are incorporated herein by reference for all purposes as if fully set forth herein.

Claims

1. An adhesive member for connecting a display panel assembly for realizing an image and a support frame for supporting a rear surface of the display panel assembly, the adhesive member comprising: base; as well as An adhesive portion is formed on one side or two opposite sides of the base portion and is provided with a protrusion pattern of an uneven structure.

2. The bonding member according to claim 1, wherein The protrusion patterns have different heights.

3. The bonding member according to claim 1, wherein The protrusion pattern is formed by forming irregularities in which a plurality of protrusions are spaced apart from each other.

4. The bonding member according to claim 1, wherein The protrusion pattern is formed in a tapered shape whose width decreases toward an end of the protrusion pattern.

5. The bonding member according to claim 1, wherein An end portion of the protrusion pattern is formed in a straight line shape or a dome shape.

6. The bonding member according to claim 1, wherein The protrusion pattern includes: a plurality of first protrusions protruding in one direction and spaced apart from each other; and A second protrusion is disposed between the first protrusions and protrudes to a size smaller than a height of the first protrusion.

7. The bonding member according to claim 6, wherein The height of the second protrusion is formed to be at least half or less than the height of the first protrusion.

8. The bonding member according to claim 6, wherein A sum of a maximum width of the first protrusion and a maximum width of the second protrusion is at least 1200 μm or less.

9. The bonding member according to claim 1, wherein The bonding portion includes a pattern region where the protrusion pattern is formed and a non-pattern region where the protrusion pattern is not formed.

10. The bonding member according to claim 1, wherein The display panel assembly is formed to be bendable to have a curve formed in at least a portion of the display panel assembly, and Wherein, the height and width of the protrusion pattern vary according to the shape of the curve.

11. The bonding member according to claim 10, wherein A portion of the display panel assembly is bent to form a curve having two opposite sides symmetrical with respect to a bending axis, and Here, the protrusion pattern formed on the adhesive member is formed to decrease in height outward from a portion facing the bending axis.

12. The bonding member according to claim 10, wherein A side portion of the display panel assembly is bent to form an asymmetric curve with respect to a bending axis, and Herein, the protrusion pattern formed on the adhesive member is formed to increase in width outward from a portion facing the bending axis.

13. The bonding member according to claim 12, wherein A height of the protrusion pattern formed at a portion of the bending axis is greater than a height of the protrusion pattern formed outside the bending axis.

14. The bonding member according to claim 10, wherein Two or more portions of the display panel assembly are bent to form at least one of a convex curve and a concave curve about each bending axis, and The width of the protrusion pattern formed on a portion facing the convex curve is smaller than the width of the protrusion pattern formed on another portion facing the concave curve.

15. A display device, comprising: A display panel assembly, wherein the display panel assembly realizes an image; a supporting frame, the supporting frame supporting a rear surface of the display panel assembly; as well as an adhesive member disposed between the display panel assembly and the supporting frame to couple the display panel assembly and the supporting frame, The bonding member has a protrusion pattern with an uneven structure on one surface or two opposite surfaces of the bonding member.

16. The display device according to claim 15, wherein: The protrusion patterns have different heights.

17. The display device according to claim 15, wherein: The adhesive member includes a base and an adhesive portion formed on one side or two opposite sides of the base and provided with the protrusion pattern.

18. The display device according to claim 15, wherein: The protrusion pattern is formed by forming irregularities in which a plurality of protrusions are spaced apart from each other.

19. The display device according to claim 15, wherein: The protrusion pattern is formed in a tapered shape having a width decreasing toward an end of the protrusion pattern, and wherein the end of the protrusion pattern is formed in a straight line shape or a dome shape.

20. The display device according to claim 15, wherein: The protrusion pattern includes a plurality of first protrusions protruding in one direction and spaced apart from each other, and a second protrusion disposed between the first protrusions and protruding to a size smaller than a height of the first protrusion, and The height of the second protrusion is formed to be at least half or less than the height of the first protrusion.

21. The display device according to claim 17, wherein: The bonding portion includes a pattern region where the protrusion pattern is formed and a non-pattern region where the protrusion pattern is not formed.

22. The display device according to claim 15, wherein: A portion of the display panel assembly is bent to form a curve having two opposite sides symmetrical with respect to a bending axis, and Here, the protrusion pattern formed on the adhesive member is formed to decrease in height outward from a portion facing the bending axis.

23. The display device according to claim 15, wherein: A side portion of the display panel assembly is bent to form an asymmetric curve with respect to a bending axis, and Herein, the protrusion pattern formed on the adhesive member is formed to increase in width outward from a portion facing the bending axis.

24. The display device according to claim 23, wherein: A height of the protrusion pattern formed at a portion of the bending axis is greater than a height of the protrusion pattern formed outside the bending axis.

25. The display device according to claim 15, wherein: Two or more portions of the display panel assembly are bent to form at least one of a convex curve and a concave curve about each bending axis, and The width of the protrusion pattern formed on a portion facing the convex curve is smaller than the width of the protrusion pattern formed on another portion facing the concave curve.

26. The display device according to claim 15, wherein: A heat dissipation plate is further disposed on a rear surface of the display panel assembly, and wherein the adhesive member is disposed between the heat dissipation plate and the support frame.

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