Display apparatus

Abstract

A display device according to an embodiment of the present specification comprises a front member disposed on the front surface of a display panel and having a curved area and a flat area, a second adhesive layer disposed on the back surface of the display panel, a first member disposed on the upper surface of the second adhesive layer, a second member disposed on the upper surface of the first member, a heat dissipation member disposed on the upper surface of the second member and having a width different from that of the front member, a sealing member encapsulating the heat dissipation member and including a first area and a second area, and a third adhesive layer disposed on the upper surface of the heat dissipation member, wherein the curved area is located on both sides of the front member along the width direction of the front member, and the width of the sealing member may be smaller than or equal to the width of the front member.

Description

Technology Field

[0001] This specification relates to a display device, and more specifically, to a display device capable of improving heat dissipation. Background Technology

[0002] Display devices are used in a wide variety of forms and methods in televisions, monitors, smartphones, tablet PCs, laptops, and wearable devices. Among the display devices used in various forms and methods, there is the Organic Light Emitting Display (OLED).

[0003] Organic light-emitting displays (OLEDs) are equipped with self-emissive elements that act as the light source themselves, eliminating the need for a separate light source and enabling the realization of bendable displays or displays of various designs. Furthermore, OLEDs allow for the production of displays thinner than Liquid Crystal Displays (LCDs). With advantages such as superior color reproduction, viewing angles, contrast ratios, and fast response speeds, they enable the creation of displays capable of displaying high-definition video, leading to a gradual increase in their range of applications.

[0004] Such an organic light-emitting display device includes a display area for displaying the screen and a non-display area formed along the outer edge of the display area. Additional components may be located in the non-display area, or various connecting components, such as a flexible circuit board for connecting additional components, may be located therein.

[0005] The thickness and width of a display device may increase due to the presence of multiple additional components. As the increased thickness and width of a display device presents disadvantages in terms of design and portability, research is being conducted on technologies to reduce the thickness and width while maintaining the rigidity of the display device.

[0006] In addition, heat may be generated in the driving direct circuit and other components when the display device is in operation. Accordingly, a heat dissipation layer may be provided on the back of the display panel to release (or dissipate) heat from the driving direct circuit and other components, and research is being conducted on technologies to improve the efficiency of heat dissipation.

[0007] Recently, display devices are being developed with curved surfaces to enhance viewer immersion and tension, or to provide a wider screen. The problem to be solved

[0008] In order to effectively dissipate heat from driving direct circuits, the thickness of the heat dissipation layer can be increased, but the overall thickness of the display device increases by the amount of the additional heat dissipation layer, which may lead to an increase in the bezel area.

[0009] In addition, after the display panel manufacturing or bending process is completed, it may be difficult to effectively dissipate heat from the driving direct circuit because it is difficult to attach additional heat dissipation layers during the process.

[0010] Accordingly, the inventors of this specification conducted various experiments to improve heat dissipation performance without increasing the thickness of the display device. Through these experiments, they invented a display device with a new structure capable of improving heat dissipation characteristics without increasing the thickness of the display device.

[0011] The problem to be solved according to the embodiments of the present specification is to provide a display device that can maintain rigidity and improve heat dissipation performance without increasing the overall thickness of the display device.

[0012] The problems to be solved according to the embodiments of this specification are not limited to those mentioned above, and other unmentioned problems will be clearly understood by those skilled in the art from the description below. means of solving the problem

[0013] A display device according to an embodiment of the present specification comprises a front member disposed on the front surface of a display panel and having a curved area and a flat area, a second adhesive layer disposed on the back surface of the display panel, a first member disposed on the upper surface of the second adhesive layer, a second member disposed on the upper surface of the first member, a heat dissipation member disposed on the upper surface of the second member and having a width smaller than that of the front member, a sealing member encapsulating the heat dissipation member and having a first area and a second area, and a third adhesive layer disposed on the upper surface of the heat dissipation member, wherein the curved area is located on both sides in the width direction of the front member, and the width of the sealing member may be smaller than or equal to the width of the front member.

[0014] A display device according to another embodiment of the present specification comprises a front member having a curved area and a flat area, a first adhesive layer disposed on the back surface of the front member, a display panel disposed on the upper surface of the first adhesive layer, a second adhesive layer disposed on the upper surface of the display panel, a first heat dissipation layer disposed on the upper surface of the second adhesive layer and comprising metal, a first cushion layer disposed on the upper surface of the first heat dissipation layer, a second heat dissipation layer disposed on the upper surface of the first cushion layer and having a width smaller than that of the front member, a sealing layer having a sealing portion and a wing portion that seals the front surface of the second heat dissipation layer, and a third adhesive layer disposed on the upper surface of the second heat dissipation layer, wherein the first cushion layer and the third adhesive layer can come into contact through a plurality of holes formed in the wing portion of the sealing layer. Effects of the invention

[0015] According to the present specification, a heat dissipation member is disposed within a display device having a curved area and a flat area, and an adhesive structure of the heat dissipation member is formed in the curved area, thereby improving heat dissipation performance without increasing the overall thickness of the display device.

[0016] According to the present specification, the adhesive performance of a heat dissipation member can be improved by forming a structure that utilizes an adhesive layer having a higher adhesive strength than a sealing member that encapsulates the heat dissipation member.

[0017] The effects of this specification are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art from the description below. Brief explanation of the drawing

[0018] FIG. 1 is a plan view of a display device according to an embodiment of the present specification. Figure 2 is a cross-sectional view along the cutting line I-I' of Figure 1. Figure 3 is an enlarged view of section A-A' of Figure 2. Figure 4 is a real photograph of the cross-sectional view according to Figure 2. FIG. 5 is a plan view of a bag member according to another embodiment of the present specification. FIG. 6 is an enlarged view of cross-section A-A' of FIG. 2 according to another embodiment of the present specification. Specific details for implementing the invention

[0019] The advantages and features of this specification and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, this specification is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of this specification is complete and to fully inform those skilled in the art of the scope of the invention, and this specification is defined only by the scope of the claims.

[0020] Shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of this specification are exemplary and are not limited to the depicted items. Throughout the specification, the same reference numerals refer to the same components. Furthermore, in describing this specification, if it is determined that a detailed description of related prior art could unnecessarily obscure the essence of this specification, such detailed description is omitted. Where terms such as "includes," "has," or "is made up" are used in this specification, other parts may be added unless "only" is used. Where a component is expressed in the singular, it includes cases where it is included in the plural unless specifically stated otherwise.

[0021] In interpreting the components, they are interpreted to include a margin of error even in the absence of a separate explicit statement.

[0022] In the case of describing a positional relationship, for example, when the positional relationship between two parts is described using expressions such as 'on,' 'upper,' 'lower,' or 'next to,' one or more other parts may be located between the two parts unless 'immediately' or 'directly' is used.

[0023] In the case of an explanation of a temporal relationship, for example, when a temporal sequence is explained using 'after', 'following', 'next', 'before', etc., it may include cases where the sequence is not continuous unless 'immediately' or 'directly' is used.

[0024] Although terms such as "first," "second," etc. are used to describe various components, these components are not limited by these terms. These terms are used merely to distinguish one component from another. Accordingly, the first component mentioned below may be the second component within the technical scope of this specification.

[0025] The features of each of the various embodiments of this specification may be combined or combined with one another, either partially or wholly, and may technically enable various interlocking and operation. Each embodiment may be implemented independently of one another or may be implemented together in an associated relationship.

[0026] In this specification, the term “display device” may include display devices in the narrow sense, such as a Liquid Crystal Module (LCM), an Organic Light-Emitting Module (OLED Module), and a Quantum Dot Module, which include a display panel and a driver for driving the display panel. Additionally, it may include set electronic apparatus or set devices, such as complete products or final products including LCMs, OLED modules, QD modules, etc., including equipment display apparatus such as notebook computers, televisions, computer monitors, automotive display apparatus or other forms of vehicles, and mobile electronic apparatus such as smartphones or electronic pads.

[0027] Accordingly, the display device in this specification may include the display device itself in the narrow sense, such as an LCM, an OLED module, a QD module, etc., and even a set device that is an application product or end-consumer device including an LCM, an OLED module, a QD module, etc.

[0028] In addition, depending on the case, an LCM, OLED module, or QD module composed of a display panel and a driving unit may be referred to as a “display device” in the narrow sense, and an electronic device as a finished product including the LCM, OLED module, or QD module may be distinguished and referred to as a “set device.” For example, a display device in the narrow sense includes a liquid crystal (LCD), organic light-emitting diode (OLED), or quantum dot display panel and a source PCB, which is a control unit for driving the display panel, and a set device may be a concept that further includes a set PCB, which is a set control unit electrically connected to the source PCB to control the entire set device.

[0029] The display panel used in this embodiment may be any type of display panel, such as a liquid crystal display panel, an organic light-emitting diode (OLED) display panel, a quantum dot (QD) display panel, and an electroluminescent display panel, and is not limited to a specific display panel capable of bezel bending using the flexible substrate for the organic light-emitting diode (OLED) display panel and the lower backplate support structure of this embodiment. Furthermore, the shape or size of the display panel used in the display device according to the embodiment of this specification is not limited.

[0030] For example, if the display panel is an organic light-emitting diode (OLED) display panel, it may include a plurality of gate lines and data lines, and pixels formed in the intersection area of ​​the gate lines and data lines. It may also be configured to include an array comprising thin-film transistors, which are devices for selectively applying voltage to each pixel, an organic light-emitting diode (OLED) layer on the array, and an encapsulation substrate or encapsulation layer disposed on the array to cover the organic light-emitting diode layer. The encapsulation layer can protect the thin-film transistors and the organic light-emitting diode layer from external shocks and prevent moisture or oxygen from penetrating into the organic light-emitting diode layer. Furthermore, the layer formed on the array may include an inorganic light-emitting layer, for example, a nano-sized material layer or a quantum dot.

[0031] Below, we will describe in detail various configurations of a display device that can improve heat dissipation without increasing the overall thickness.

[0032] FIG. 1 is a plan view of a display device according to an embodiment of the present specification. FIG. 2 is a cross-sectional view along the cutting line I-I' of FIG. 1, and FIG. 3 is an enlarged view of the cross-section A-A' of FIG. 2.

[0033] The back and top directions defined in this specification may be in the Z-axis direction, and the front and bottom directions may be in the -Z-axis direction. For example, FIG. 1 illustrates the front of a display device (100).

[0034] Referring to FIGS. 1 to 3, the display device (100) may be configured to include a front member (200), a display panel (400), and a heat dissipation structure (700).

[0035] A front member (200) may be adhered to the front surface of the display panel (400). For example, the front member (200) may be adhered to the display panel (400) by a first adhesive layer (310).

[0036] The display panel (400) may include a display substrate made of a polymer, plastic such as polyimide (PI), or glass. The display panel (400) may include an active area for displaying an image and a non-active area. A plurality of subpixels for displaying an image and a driving circuit for driving the plurality of subpixels may be disposed in the active area. The pixel array may include a plurality of subpixels and a driving circuit. The non-active area is formed to surround the active area and may be an area where no image is displayed.

[0037] The bezel may be a non-display area surrounding a display area in a display device product to which the display device (100) is applied. The non-display area of ​​the display device (1) and the bezel may be the same area. A circuit board (105), a driving integrated circuit (110), and a connector (120) connected to an external device may be disposed in the non-display area. The connector (120) may be a current connector, but is not limited to the term.

[0038] In the embodiments of the present specification, the driving integrated circuit (110) may be applied as a chip-on-film (COF) that is directly mounted on the display panel (400), but is not limited thereto. The circuit board (105) may be a flexible printed circuit board (FPCB), and the circuit board (105) may be directly mounted or attached to the display panel (400).

[0039] One side (or end) of the circuit board (105) is attached to the non-display area of ​​the display panel (400), and the other side (or end) is subsequently bent so as to be placed on the back surface of the display panel (400), thereby reducing the non-display area of ​​the display panel (400) visible from the front. Additionally, the end of the display panel (400) on which the circuit board (105) is mounted is subsequently bent to a certain degree together with the circuit board (105), thereby further reducing the non-display area of ​​the display panel (400) visible from the front.

[0040] In another embodiment of the present specification, in order to minimize the non-display area of ​​the display panel (400) visible from the front, one side (or end) of the display panel (400) may be bent and positioned on the back surface of the display panel (400). Based on the bent state of the circuit board (105), the driving integrated circuit (110) may be positioned on the back surface of the display board.

[0041] The larger the radius of curvature at which the display panel (400) or circuit board (105) is bent, the larger the non-display area of ​​the display panel (400) visible from the front becomes, and the overall thickness of the display device (100) can be reduced so that the radius of curvature of the circuit board (105) can be formed smaller.

[0042] A pixel array portion including a thin-film transistor layer and a light-emitting element may be disposed on the upper part of the display panel (400). The pixel array portion includes a plurality of subpixels. Each of the plurality of subpixels may be an individual unit that emits light, and a light-emitting element may be disposed in each of the plurality of subpixels.

[0043] The driving integrated circuit (110) generates a data signal and a gate control signal based on image data and a timing synchronization signal supplied from an external host driving system. The driving integrated circuit (110) supplies the data signal to the data wiring of each pixel through the display pad section and can supply the gate control signal to the gate driving circuit section.

[0044] Since the driving integrated circuit (110) generates high heat, it may be necessary to effectively provide a heat dissipation effect to the driving integrated circuit (110). For example, the display panel (400) and the driving integrated circuit (110) can be effectively heat dissipated by a first heat dissipation structure (500) or a second heat dissipation structure (700).

[0045] The first and second heat dissipation structures (500, 700) are positioned between the display panel (400) and the driving integrated circuit (110) to effectively dissipate heat generated from the display panel (400) as well as the driving integrated circuit (110). The first and second heat dissipation structures (500, 700) may be cushion plates or heat dissipation layers, etc., and are not limited to the terms. For example, the second heat dissipation structure (500) may be an extended heat dissipation structure, and is not limited to the terms.

[0046] The first heat dissipation structure (500) may be configured to include a first member (or first heat dissipation layer) (510) and a second member (or first cushion layer) (520). The second heat dissipation structure (700) may be configured to further include a heat dissipation member (or second heat dissipation layer) (600) in the first heat dissipation structure (500). For example, the first member (510), the second member (520), and the heat dissipation member (600) may be stacked in order toward the rear surface of the display device (100).

[0047] A first member (or first heat dissipation layer) (510) may be disposed on the upper part of the display panel (400). The first member (510) may be disposed on the lower part of the display substrate constituting the display panel (400) to reinforce the rigidity of the display substrate. The first member (510) may be formed to have a certain strength and thickness to reinforce the rigidity of the display substrate. The first member (510) may be a back plate, a support layer, a heat dissipation member, or a rigidity member, but is not limited to these terms.

[0048] The first member (or first heat dissipation layer) (510) can transfer heat generated from the display panel (400) to the upper side. The first member (510) can absorb heat generated from the display panel (400) and transfer heat to another medium. The first member (510) can be composed of a material with high thermal conductivity or heat dissipation efficiency. For example, the first member (510) may be a metal layer containing copper, but is not limited to this material.

[0049] A second adhesive layer (320) may be disposed between the display panel (400) and the first member (510). The second adhesive layer (320) can bond the display panel (400) and the first member (510) to each other. The second adhesive layer (320) can transfer heat generated from the display panel (400) to the first member (510).

[0050] A second member (or first cushion layer) (520) may be disposed on the upper portion of the first member (510). The second member (520) may have a heat dissipation function and a shock absorption function. The second member (520) may receive heat generated from the display panel (400) from the first member (510) and transfer it to another medium. The second member (520) may absorb external shocks to the display device (400) to reduce the shock transmitted to the display panel (400). The second member (520) may be a cushion layer, a foam layer, or a shock absorption layer, but is not limited to these terms. For example, the second member (520) may be a foam having a plurality of air bubbles inside and may be formed of urethane foam, but is not limited thereto. For example, the second member (520) may have a greater thickness than the first member (510).

[0051] The second member (520) may be composed of a metal having a multi-pore shape. For example, the second member (520) may be a metal foam or a flexible conductive film (FCF), but is not limited to these terms. The material of the second member (520) may be composed of a metal, but is not limited thereto. For example, the second member (520) may be composed of copper (Cu), which has high thermal conductivity and is easy to manufacture into a multi-pore shape.

[0052] Since the second member (520) is a metal having a porous shape, it may be lighter than the same metal without porosity, and since it has a soft nature, it may be easy to process, such as cutting or bending. In addition, since the second member (520) has a porous shape, it has a large surface area in contact with air, which can be advantageous for heat dissipation.

[0053] The second member (520) may have a greater thickness than the first member (510). For example, the second member (520) may absorb external shocks to the display device (400) to reduce the shock transmitted to the display panel (400). An adhesive layer may be interposed between the first member (510) and the second member (520).

[0054] Heat generated from the display panel (400) can be efficiently dissipated by the basic heat dissipation structure (500). In addition, by absorbing external shocks to the display device (100) by the basic heat dissipation structure (500), the rigidity of the display device (100) can be reinforced to prevent damage.

[0055] In addition to the first heat dissipation structure (500), a heat dissipation member (or second heat dissipation layer) (600) and a third adhesive layer (330) may be added and placed in the display device (100). By placing the heat dissipation member (600) and the third adhesive layer (330), heat dissipation efficiency can be increased and rigidity can be further improved.

[0056] The heat dissipation member (or second heat dissipation layer) (600) can dissipate heat received from the basic heat dissipation structure (500). The heat dissipation member (600) may be a material having a higher thermal conductivity than the first member (510). For example, the heat dissipation member (600) may be composed of graphite (or graphite), but is not limited to the material.

[0057] A third adhesive layer (330) may be placed on the upper surface of the heat dissipation member (600). The third adhesive layer (330) may cover the heat dissipation member (600) and absorb external shocks to the display device (100). The third adhesive layer (330) may be an embossed layer or a cushion layer, but is not limited to these terms. For example, the third adhesive layer (330) may have a thickness of 60 μm and an adhesive strength of 1,000 gf, but is not limited thereto.

[0058] The heat dissipation member (600) can be composed of graphite material. Graphite is lightweight and slim, and has superior thermal conductivity compared to aluminum (Al) or copper (Cu). For example, its thermal diffusivity in the planar direction is more than three times that of copper. In addition to its heat dissipation characteristics in the longitudinal direction (or Z-axis direction), graphite also possesses heat dissipation characteristics in the transverse direction (or X-axis direction), resulting in higher thermal conductivity efficiency. Graphite cannot be used as graphite alone, and a protective film is attached to it due to its conductivity and the possibility of dust generation.

[0059] Referring to FIG. 3, the heat dissipation member (600) may have a width smaller than that of the front member (200). The sealing member (or sealing layer) (340) may seal (or seal) the heat dissipation member (600) from the top and bottom. The sealing member (340) may eliminate the conductivity and potential for dust generation of the heat dissipation member (600).

[0060] The bag member (340) is composed of two planar layers and can be bagged by covering the heat dissipation member (600) on the upper and lower surfaces, respectively. The bag member (340) can be bonded to a third adhesive layer (330) placed on the upper surface of the bag member (340) and can be bonded to a second member (520) placed on the lower surface of the bag member (340). For example, each of the two planar layers of the bag member (340) may be a material having adhesive properties on both sides. For example, the bag member (340) may have a thickness of 5 to 10 μm and an adhesive strength of 500 to 600 gf, but is not limited thereto.

[0061] The sealing member (340) may be composed of a first region (or sealing portion) (R1) that seals (or seals) the heat dissipation member (600) between two planar layers and a second region (or wing portion) (R2) where the two planar layers are directly bonded to each other. By this, at least one or all regions of the heat dissipation member (600) may be sealed by the sealing member (340).

[0062] In the embodiments of the present specification, the heat dissipation structure (500, 700) may be formed to be smaller than the size of the display panel (400). If the heat dissipation structure (500, 700) is formed to be larger than the display panel (400), the non-display area may be increased. Accordingly, the size of the heat dissipation structure (500, 700) may be formed to be smaller than the size of the display panel (400) so that the non-display area is not increased. As another example, if the heat dissipation structure (500, 700) is formed to be smaller than the size of the display panel (400), the weight of the display device (100) may be reduced and manufacturing costs may be lowered, but the heat dissipation and shock absorption functions may be reduced.

[0063] Additionally, if the heat dissipation structure (500, 700) is formed to be smaller than the display panel (400), a step difference occurs between the heat dissipation structure (500, 700) and the display panel (400), and in the end portion of the display panel (400) where the step difference is formed, the display panel (400) protrudes without being supported by the heat dissipation structure (500, 700), so it can be easily damaged when an external impact is applied.

[0064] The display device (100) may be configured such that a portion of the area of ​​the display panel (400) has a curved surface. Referring to FIGS. 1 and 2, the front member (200) may have a curved area (CA) and a flat area (PA).

[0065] The front member (200) may be a cover glass, a cover window, or tempered glass, etc., and is not limited to the terms. A curved area (CA) may be positioned at one or both ends of the first direction (or X-axis direction) of the front member (200). The value of the radius of curvature of the curved area (CA) may not be fixed.

[0066] A display device (100) according to an embodiment of the present specification may have curved areas (CA) at both ends of a front member (200). The values ​​of the radius of curvature of each of the curved areas (CA) on both sides may be different from each other.

[0067] Referring to FIG. 2, components positioned on the upper part of the front member (200) may be affected by the shape of the front member (200). For example, the display panel (400), the first member (510), the second member (520), and the heat dissipation member (600) positioned in the flat area (PA) of the front member (200) may have a flat shape, and the display panel (400), the first member (510), the second member (520), and the heat dissipation member (600) positioned in the curved area (CA) of the front member (200) may have a curved shape.

[0068] The display panel (400), the first member (510), the second member (520), and the heat dissipation member (600) disposed on the curved area (CA) of the front member (200) can maintain a curved shape by the adhesive force of the first adhesive layer (310), the second adhesive layer (320), and the encapsulating member (340). The display panel (400), the first member (510), the second member (520), and the heat dissipation member (600) may have a restoring force (or elastic force) due to the material properties of each component. The restoring force may also be influenced by the thickness of each component. For example, the restoring force may increase as the thickness of each component increases.

[0069] Adhesive force and restoring force act in opposite directions. For example, the adhesive force is directed outward toward the arc formed by the curved area (CA), and the restoring force is directed inward toward the arc formed by the curved area (CA). If the adhesive force is greater than the restoring force, each component can maintain a state of adhesion to the curved area (CA). If the restoring force is greater than the adhesive force, each component may not be able to maintain a state of adhesion to the curved area (CA). For example, at least one of the first adhesive layer (310), the second adhesive layer (320), or the encapsulating member (340) may detach without maintaining an adhesion state.

[0070] Figure 4 is a real photograph of the cross-sectional view according to Figure 2.

[0071] Referring to FIG. 4, it can be observed that the display panel (400) and the heat dissipation structure (500) are maintained in an adhesive state by the first adhesive layer (310) and the second adhesive layer (320), respectively, on the curved area (CA) of the front member (200), but the heat dissipation structure (500) and the sealing member (340) are not maintained in an adhesive state and a phenomenon of lifting (lifting phenomenon) is observed.

[0072] The sealing member (340) is composed of two planar layers and can seal (or seal) the heat dissipation member (600) on the upper and lower surfaces, respectively. Each of the two planar layers of the sealing member (340) may be made of a material having adhesive properties on both sides. The sealing member may be composed of a first region (or sealing portion) (R1) that seals the heat dissipation member (600) between the two planar layers and a second region (or wing portion) (R2) where the two planar layers are directly bonded to each other.

[0073] The location where the lifting phenomenon of the bag member (340) occurs may be a location within the curved area (CA). For example, the lifting phenomenon of the bag member (340) may occur within the second area (R2) within the curved area (CA). The lifting phenomenon of the bag member (340) may be caused by the weak adhesive force of the bag member (340) itself and the step shape of the boundary surface between the first area (R1) and the second area (R2) of the bag member (340), but is not limited thereto.

[0074] The first region (R1) in which the sealing member (340) seals the heat dissipation member (600) can be reduced, for example, by reducing the width of the heat dissipation member (600), so that the step shape of the boundary surface between the first region (R1) and the second region (R2) can be moved from a curved region (CA) to a flat region (PA). By doing so, the lifting phenomenon of the sealing member (340) can be reduced, but the heat dissipation performance may be reduced as the area of ​​the heat dissipation member (600) is reduced.

[0075] The lifting phenomenon can be resolved by supplementing the adhesive strength of the bag member (340). Methods for supplementing the adhesive strength of the bag member (340) may include strengthening the adhesive strength of the bag member (340) itself (or the first method) and strengthening the adhesive strength from the outside of the bag member (340) (or the second method). Since the first method may increase the thickness of the bag member (340) and may affect the bag function due to changes in the adhesive material, there may be limitations in attempting the first method.

[0076] The inventors of this specification conducted various experiments to strengthen the adhesive force from the outside of the bag member (340). Through these experiments, a display device with a new structure capable of strengthening the adhesive force without changing the characteristics of the bag member (340) was invented.

[0077] FIG. 5 is a plan view of a bag member according to another embodiment of the present specification, and FIG. 6 is an enlarged view of cross-section A-A' of FIG. 2 according to another embodiment of the present specification.

[0078] Referring to FIG. 5, a display device (100) according to another embodiment of the present specification may form a plurality of holes in a second region (R2) of a sealing member (340). Referring to FIG. 6, a display device (100) according to another embodiment of the present specification may include a front member (200), a first adhesive layer (310), a display panel (400), a second adhesive layer (320), a sealing member (340) that seals a first member (510), a second member (520), and a heat dissipation member (600), and a third adhesive layer (330). Here, components identical or similar to those in FIG. 3 will be described briefly.

[0079] Referring to FIGS. 5 and 6, the sealing member (340) is composed of two planar layers and can seal (or seal) the heat dissipation member (600) on the upper and lower surfaces, respectively. Each of the two planar layers of the sealing member (340) may be made of a material having adhesive properties on both sides. For example, the sealing member (340) may have a thickness of 5 to 10 μm and an adhesive strength of 500 to 600 gf, but is not limited thereto. The sealing member may be composed of a first region (or sealing portion) (R1) that seals the heat dissipation member (600) between the two planar layers and a second region (or wing portion) (R2) where the two planar layers are directly bonded to each other.

[0080] The bag member (340) may have a plurality of holes (HL) in the second region (R2). The third adhesive layer (330) may be directly adhered to the second member (520) through the plurality of holes (HL) in the second region (R2). The adhesive strength of the third adhesive layer (330) may be 1,000 gf, and the adhesive strength of the bag member (340) may be 500 to 600 g. Since the adhesive strength of the third adhesive layer (330) is higher than that of the bag member (340), the force with which the third adhesive layer (330) adheres to the second member (520) through the plurality of holes (HL) may be stronger than the force with which the bag member (340) adheres to the second member (520). By doing so, the adhesion between the bag member (340) and the second member (520) is supplemented, thereby resolving the lifting phenomenon between the bag member (340) and the second member (520).

[0081] Referring to FIG. 6, the front member (200) may be composed of a curved area (CA) and a flat area (PA). The curved area (CA) may be positioned at one or both ends of the first direction (or X-axis direction) of the front member (200). The values ​​of the radius of curvature of each curved area (CA) positioned at both ends may be different from each other.

[0082] A display panel (400) may be attached to the back surface of the front member (200). For example, the display panel (400) may be attached to the front member (200) by a first adhesive layer (310).

[0083] A first member (or first heat dissipation layer) (510) may be disposed on the upper part of the display panel (400). The first member (510) may be disposed on the lower part of the display substrate constituting the display panel (400) to reinforce the rigidity of the display substrate. The first member (510) may absorb heat generated from the display panel (400) and transfer it to another medium.

[0084] A second adhesive layer (320) may be disposed between the display panel (400) and the first member (510). The second adhesive layer (320) can bond the display panel (400) and the first member (510) to each other. The second adhesive layer (320) can transfer heat generated from the display panel to the first member (510).

[0085] A second member (or first cushion layer) (520) may be disposed on the upper portion of the first member (510). The second member (520) may have a heat dissipation function and a shock absorption function. The second member (520) may receive heat generated from the display panel (400) from the first member (510) and transfer it to another medium. The second member (520) may absorb external shocks to the display device (400) to reduce the shock transmitted to the display panel (400).

[0086] A heat dissipation member (or second heat dissipation layer) (600) may be disposed on the upper portion of the second member (520). The heat dissipation member (600) may dissipate heat received from the second member (520). The heat dissipation member (600) may be composed of a graphite material.

[0087] The bagging member (or sealing layer) (340) is composed of two planar layers and can cover and seal the heat dissipation member (600) on the upper and lower surfaces, respectively. The bagging member (340) can eliminate the conductivity and potential for dust generation of the heat dissipation member (600). Each of the two planar layers of the bagging member (340) may be made of a material having adhesive properties on both sides. The adhesive strength of the bagging member (340) may be 500 to 600 gf, but is not limited thereto.

[0088] The sealing member (340) may be composed of a first region (or sealing portion) (R1) that seals (or seals) the heat dissipation member (600) between two planar layers and a second region (or wing portion) (R2) where the two planar layers are directly bonded to each other. Accordingly, at least one or all regions of the heat dissipation member (600) may be sealed by the sealing member (340). The sealing member (340) may have a plurality of holes (HL) in the second region (R2).

[0089] A third adhesive layer (330) may be placed on the upper portion of the heat dissipation member (600). The third adhesive layer (330) may cover the heat dissipation member (600) and absorb external shocks to the display device (100). The adhesive strength of the third adhesive layer (330) may be 1,000 gf, but is not limited thereto.

[0090] A display device according to another embodiment of the present specification may have a plurality of holes (HL) in a second region (R2) of a sealing member (340) to strengthen the adhesion between components within a curved region (CA), for example, to supplement the adhesion between a second member (520) and a sealing member (340).

[0091] The third adhesive layer (330) and the second member (520) can be directly bonded through multiple holes (HL). For example, the adhesive strength of the third adhesive layer (330) may be 1,000 gf, and the adhesive strength of the bag member (340) may be 500 to 600 gf, but is not limited thereto. Since the adhesive strength of the third adhesive layer (330) is higher than that of the bag member (340), the force with which the third adhesive layer (330) bonds to the second member (520) through multiple holes (HL) may be stronger than the force with which the bag member (340) bonds to the second member (520). By doing so, the bonding force of the bag member (340) to the second member (520) is supplemented, thereby resolving the lifting phenomenon between the bag member (340) and the second member (520). By improving the adhesion performance between components within the curved area (CA) in this way, a display device (100) with improved reliability can be provided.

[0092] The bag member (340) may have a width that is smaller than or equal to that of the front member (200). The area of ​​the second region (R2) of the bag member (340) may be influenced by the area of ​​the first region (R1), for example, the area occupied by the heat dissipation member (600). The area of ​​the second region (R2) may be divided into the area of ​​the region where multiple holes (HL) are formed and the area of ​​the region where multiple holes (HL) are not formed. The area of ​​the region where multiple holes (HL) are formed may be influenced by the shape and spacing of the multiple holes (HL). For example, the area where the third adhesive layer (330) adheres to the second member (520) may be influenced by the shape and spacing of the multiple holes (HL). Additionally, the area where the third adhesive layer (330) and the second member (520) adhere may be influenced by the height of the bag member (340) within the second region (R2).

[0093] Multiple holes (HL) may have a circular or polygonal shape. By adjusting the circular or polygonal shape of the multiple holes (HL) to form them, the area of ​​the multiple holes (HL) can be adjusted. Accordingly, the combined force of the adhesive force between the sealing member (340) and the second member (520) and the adhesive force between the third adhesive layer (330) and the second member (520) is made stronger than the restoring force of the heat dissipation member (600) or the sealing member (340), thereby eliminating the lifting phenomenon.

[0094] Multiple holes (HL) can be arranged side by side at equal intervals. By adjusting the spacing of the arrangement of the multiple holes (HL), the area of ​​the multiple holes (HL) can be adjusted. Accordingly, the combined force of the adhesive force between the sealing member (340) and the second member (520) and the adhesive force between the third adhesive layer (330) and the second member (520) is made stronger than the restoring force of the heat dissipation member (600) or the sealing member (340), thereby eliminating the lifting phenomenon.

[0095] A display device according to an embodiment of the present specification may be described as follows.

[0096] A display device according to an embodiment of the present specification comprises a front member disposed on the front surface of a display panel and having a curved area and a flat area, a second adhesive layer disposed on the back surface of the display panel, a first member disposed on the upper surface of the second adhesive layer, a second member disposed on the upper surface of the first member, a heat dissipation member disposed on the upper surface of the second member and having a width different from that of the front member, a sealing member encapsulating the heat dissipation member and including a first area and a second area, and a third adhesive layer disposed on the upper surface of the heat dissipation member, wherein the curved area is located on both sides of the front member along the width direction of the front member, and the width of the sealing member may be smaller than or equal to the width of the front member.

[0097] In a display device according to some embodiments of the present specification, the heat dissipation member may be sealed in a first region of the sealing member.

[0098] A display device according to some embodiments of the present specification may include a plurality of holes in a second region of a sealing member.

[0099] A display device according to some embodiments of the present specification may have a plurality of holes arranged side by side at equal intervals.

[0100] In a display device according to some embodiments of the present specification, a plurality of holes may have a circular or polygonal shape.

[0101] In a display device according to some embodiments of the present specification, a third adhesive layer and a second member may come into contact inside a plurality of holes.

[0102] In some embodiments of the present specification, the display device may include a first member made of metal.

[0103] A display device according to some embodiments of the present specification may further include a first adhesive layer between a display panel and a front member.

[0104] A display device according to some embodiments of the present specification may have a heat dissipation member having a width smaller than that of a front member.

[0105] A display device according to an embodiment of the present specification comprises a front member having a curved area and a flat area, a first adhesive layer disposed on the back surface of the front member, a display panel disposed on the upper surface of the first adhesive layer, a second adhesive layer disposed on the upper surface of the display panel, a first heat dissipation layer disposed on the upper surface of the second adhesive layer and comprising metal, a first cushion layer disposed on the upper surface of the first heat dissipation layer, a second heat dissipation layer disposed on the upper surface of the first cushion layer and having a width different from that of the front member, a sealing layer having a sealing portion and a wing portion that seals the front surface of the second heat dissipation layer, and a third adhesive layer disposed on the upper surface of the second heat dissipation layer, wherein the first cushion layer and the third adhesive layer can come into contact through a plurality of holes formed in the wing portion of the sealing layer.

[0106] A display device according to some embodiments of the present specification may have a plurality of holes having a circular or polygonal shape, and the plurality of holes may be arranged at equal intervals.

[0107] A display device according to some embodiments of the present specification may have a wing portion adjacent to one side of a curved area and disposed within the curved area.

[0108] In some embodiments of the present specification, the display device may have a second heat dissipation layer with a width smaller than that of the front member.

[0109] Although the embodiments of this specification have been described in more detail with reference to the attached drawings, this specification is not necessarily limited to these embodiments and may be modified in various ways within the scope of the technical spirit of this specification. Accordingly, the embodiments disclosed in this specification are intended to explain, not limit, the technical spirit of this specification, and the scope of the technical spirit of this specification is not limited by these embodiments. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. The scope of protection of this specification shall be interpreted by the claims, and all technical spirits within an equivalent scope shall be interpreted as being included within the scope of rights of this specification. Explanation of the symbols

[0110] 100: Display device 200: Front member 310: 1st adhesive layer 320: 2nd adhesive layer 330: Third adhesive layer 340: Encapsulation member 400: Display panel 510: First member 520: Second component 600: Heat dissipation component R1: Zone 1 R2: Zone 2 PA: Planar area CA: Curved area HL: Hole

Claims

Claim 1 A display device comprising: a front member disposed on the front surface of a display panel and having a curved area and a flat area; a second adhesive layer disposed on the back surface of the display panel; a first member disposed on the upper surface of the second adhesive layer; a second member disposed on the upper surface of the first member; a heat dissipation member disposed on the upper surface of the second member and having a width different from that of the front member; a sealing member comprising a first area that encloses the heat dissipation member and a second area disposed on the outside of the first area; and a third adhesive layer disposed on the upper surface of the heat dissipation member, wherein the curved area is located on both sides of the front member along the width direction of the front member, the second area is disposed within the curved area, a plurality of holes are formed in the second area, and the third adhesive layer is in direct contact with the second member through the plurality of holes. Claim 2 delete Claim 3 delete Claim 4 A display device according to claim 1, wherein the plurality of holes are arranged side by side at equal intervals. Claim 5 A display device according to claim 1, wherein the plurality of holes have a circular or polygonal shape. Claim 6 A display device according to claim 1, wherein the first region is arranged to extend from the planar region to a part of the curved region. Claim 7 In claim 1, the first member comprises a metal, forming a display device. Claim 8 A display device according to claim 1, further comprising a first adhesive layer between the display panel and the front member. Claim 9 A display device according to claim 1, wherein the heat dissipation member has a width smaller than that of the front member. Claim 10 A display device comprising: a front member having a curved area and a flat area; a first adhesive layer disposed on the back surface of the front member; a display panel disposed on the upper surface of the first adhesive layer; a second adhesive layer disposed on the upper surface of the display panel; a first heat dissipation layer disposed on the upper surface of the second adhesive layer and comprising metal; a first cushion layer disposed on the upper surface of the first heat dissipation layer; a second heat dissipation layer disposed on the upper surface of the first cushion layer and having a width different from that of the front member; a sealing layer comprising a sealing portion that seals the front surface of the second heat dissipation layer and a wing portion disposed on the outer side of the sealing portion; and a third adhesive layer disposed on the upper surface of the second heat dissipation layer, wherein the wing portion is disposed corresponding to the curved area, and a plurality of holes are formed in the wing portion, and the first cushion layer and the third adhesive layer come into contact through the plurality of holes. Claim 11 A display device according to claim 10, wherein the plurality of holes have a circular or polygonal shape and the plurality of holes are arranged at equal intervals. Claim 12 A display device according to claim 10, wherein the packaging portion is arranged to extend from the flat area to a part of the curved area. Claim 13 In claim 10, the display device, wherein the second heat dissipation layer has a width smaller than that of the front member.

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