Display device

Abstract

The present invention provides a display device that can suppress display defects without compromising the levitation effect in a display device that can achieve a levitation effect. The display device (1) includes: a display panel (50) having a display section for displaying images; a plate-shaped member (20) having a first main surface (20a) and a second main surface (20b), wherein the display panel (50) is disposed on the side of the second main surface (20b) and has a screen section (21) disposed at a position corresponding to the display section; an opaque frame edge member (10) disposed on the periphery of the screen section (21); an adhesive member (40) having light transmittance and adhering the display panel (50) to the plate-shaped member (20); a retaining member (90) disposed on the side of the second main surface (20b) of the plate-shaped member (20); and a fixing member (screw (70)) fixing the frame edge member (10) and the retaining member (90) to the plate-shaped member (20), wherein the plate-shaped member (20) also has a transparent peripheral portion (23) disposed on the outside of the frame edge member (10).

Description

Technical Field

[0001] This invention relates to display devices. Background Technology

[0002] Display devices using flat panel display panels (display panels) such as liquid crystal display panels and organic EL (electro-Luminescence) display panels are known. In such display devices, a bezel is used to fix the display panel and a front panel (plate-like component) disposed on the front side of the display panel (see Patent Document 1). The bezel is an opaque frame-like component disposed on the outer periphery of the display device.

[0003] Patent Document 1: Japanese Patent Publication No. 2014-160281

[0004] However, a display device has been proposed that creates a floating effect by arranging a frame-shaped transparent portion around the display portion of the display panel, thereby making the image displayed on the display panel appear to be suspended in the air.

[0005] In such display devices, for example, a configuration in which the display panel is bonded to the plate-like component using an adhesive component such as an optically clear adhesive (OCA) has been studied. However, such a display device has the following problems: due to the stress when a load is applied to the outer periphery, display defects such as peeling of the display panel from the plate-like component or cracking of the display panel may occur. In addition, although a bezel as shown in Patent Document 1 can be provided on the outer periphery of the display device with this configuration, it will impair the floating effect.

[0006] Thus, in the existing technology, it is difficult to achieve a display device that can suppress display defects without compromising the levitation effect. Summary of the Invention

[0007] Therefore, the present invention provides a display device that can suppress display defects without compromising the levitation effect in a display device that can achieve a levitation effect.

[0008] One aspect of the present invention provides a display device comprising: a display panel having a display portion for displaying an image; a plate-like member having a first main surface and a second main surface, wherein the display panel is disposed on the second main surface side and has a screen portion disposed at a position corresponding to the display portion; an opaque frame edge member disposed around the periphery of the screen portion; an adhesive member having light transmittance for adhesively bonding the display panel to the plate-like member; a retaining member disposed on the second main surface side of the plate-like member; and a fixing member for fixing the frame edge member and the retaining member to the plate-like member, wherein the plate-like member further has a transparent peripheral portion disposed on the outer side of the frame edge member.

[0009] According to one aspect of the present invention, a display device capable of achieving a levitation effect can be realized that suppresses display defects without compromising the levitation effect. Attached Figure Description

[0010] Figure 1 This is a perspective view showing the appearance of the display device according to the embodiment.

[0011] Figure 2 This is an exploded perspective view showing the configuration of the display device according to the embodiment.

[0012] Figure 3 This is an exploded perspective view showing the structure of the frame edge component in the embodiment.

[0013] Figure 4 This is the front view of the front panel showing the implementation method.

[0014] Figure 5 It means to use Figure 4 The cross-sectional view of the front panel cut by the VV cut line is shown.

[0015] Figure 6 This is a graph showing the spectral transmittance of the adhesive component in the embodiment.

[0016] Figure 7 This is a partial perspective view showing the configuration of the rear side of the display device according to the embodiment.

[0017] Figure 8A This is a diagram showing the configuration of the display device when viewed from the side.

[0018] Figure 8B This diagram shows the configuration of the display device with the peripheral fixing parts removed when viewed from the side.

[0019] Figure 8C This diagram shows the configuration of the display device with the peripheral fixing parts and plate-shaped parts removed when viewed from the side.

[0020] Figure 9 This is a first diagram illustrating the load applied in a simulation of a display device for an embodiment.

[0021] Figure 10 This is a diagram used to illustrate the load applied in a simulation of the display device for the comparative example.

[0022] Figure 11A This is a second diagram used to illustrate the load applied in a simulation of a display device for an embodiment.

[0023] Figure 11B This is a graph showing the simulation results of the shape deformation of a display device under a 1N load.

[0024] Figure 11C The first figure shows the simulation results of the stress applied to the display device of the embodiment under a load of 1N.

[0025] Figure 11D This is a graph showing the simulation results of the stress applied to the display panel of the display device in the embodiment under a load of 1N.

[0026] Figure 12A This is a graph showing the simulation results of the shape deformation of a display device for a comparative example under a 1N load.

[0027] Figure 12B The first figure shows the simulation results of the stress applied to the display device of the comparative example under a load of 1N.

[0028] Figure 12C This is a graph showing the simulation results of the stress applied to the display panel of the comparative example display device under a load of 1N.

[0029] Figure 13 The second figure shows the simulation results of the stress applied to the display device of the embodiment under a load of 1N.

[0030] Figure 14 The second figure shows the simulation results of the stress applied to the display device of the comparative example under a load of 1N.

[0031] Explanation of reference numerals in the attached figures

[0032] 1 Display device

[0033] 10. Frame edge components

[0034] 11 Decorative Components

[0035] 12, 14, 40 Adhesive components

[0036] 13 Protruding parts

[0037] 13a First plate-shaped part

[0038] 13a1 First protrusion

[0039] 13b Second plate-shaped part

[0040] 13b1 Second protrusion

[0041] 20, 200 plate-shaped components

[0042] 20a First Main Face

[0043] 20b Second Main Face

[0044] 21. Image Section

[0045] 22 slots

[0046] 22a Bottom surface

[0047] 23 Peripheral section

[0048] 24 Through holes

[0049] 30, 230 Front Panel

[0050] 50 Display Panel

[0051] 60 Peripheral fixing components (frame components)

[0052] 61 plate-shaped part

[0053] 62 First Thick-walled Section

[0054] 63 Second thick-walled section

[0055] 70 Screws (for fixing parts)

[0056] 80 and 120 heat dissipation components

[0057] 90 Retaining component

[0058] 100 FPC

[0059] 110 Printed substrate

[0060] 121 Transmission Components

[0061] Thicknesses t1 and t2 Detailed Implementation

[0062] The embodiments will be described in detail below with reference to the accompanying drawings.

[0063] Furthermore, the embodiments described below are general or specific examples. The numerical values, shapes, constituent elements, arrangement positions of constituent elements, and connection methods shown in the following embodiments are examples and are not intended to limit the present invention. For example, constituent elements in the following embodiments that are not described in the independent claims can be described as arbitrary constituent elements.

[0064] Furthermore, these figures are schematic diagrams and may not be strictly accurate. Therefore, for example, the scales may not be consistent across different figures. Additionally, identical reference numerals are used for substantially identical components across figures, and repetitive descriptions are omitted or simplified.

[0065] In this specification and figures, the X-axis, Y-axis, and Z-axis represent the three axes of a right-handed three-dimensional orthogonal coordinate system. In the embodiment, the X-axis direction is defined as the stacking direction of the components of the display device, the Y-axis direction is defined as the direction of the long side of the rectangular display device, and the Z-axis direction is defined as the direction of the short side of the rectangular display device. The direction perpendicular to the X-axis and Y-axis directions is defined as the Z-axis direction. Furthermore, in this specification, "frontal viewing" means viewing the display device along its stacking direction (which is also the thickness direction of the display device, the X-axis direction).

[0066] Furthermore, in this specification, terms such as "equal" to indicate the relationship between elements, and terms such as "rectangle" and "ellipse" to indicate the shape of elements, as well as numerical values ​​and numerical ranges, are not merely expressions of a strict meaning, but also imply and include substantially equivalent ranges, such as expressions of differences of a few percent (e.g., about 10%).

[0067] In addition, in this specification, display defects refer to display defects that may occur due to stress caused by applying a load to the outer periphery of the display device. Examples include the separation of the display panel from the plate-like component or a crack in the display panel. Furthermore, display defects can also be caused by uneven display thickness resulting from an uneven display.

[0068] (Implementation Method)

[0069] The following is for reference Figures 1 to 14 The display device of this embodiment will be described.

[0070] [1. Composition of the display device]

[0071] First, refer to Figures 1 to 8C The configuration of the display device in this embodiment will be described. Figure 1 This is a perspective view showing the appearance of the display device 1 according to this embodiment. Figure 2 This is an exploded perspective view showing the configuration of the display device 1 according to this embodiment.

[0072] The display device 1 in this embodiment is a device for displaying images, such as... Figure 1 as well as Figure 2 As shown, the display device 1 includes a front panel 30, an adhesive component 40, a display panel 50, a screw 70, and a retaining component 90.

[0073] The front panel 30 is a plate-shaped component having a first main surface 20a and a second main surface 20b located on the back side of the first main surface 20a, and a display panel 50 disposed on the side of the second main surface 20b. The display panel 50 is disposed along the second main surface 20b.

[0074] The front panel 30 has a frame edge member 10 and a plate-like member 20. The display device 1 has a configuration that suppresses display defects such as peeling of the plate-like member 20 from the display panel 50 by means of the frame edge member 10 and the retaining member 90. Specifically, the display device 1 has a configuration that suppresses deformation of the plate-like member 20 due to load by means of the frame edge member 10 and the retaining member 90. The frame edge member 10 and the plate-like member 20 are, for example, separate members.

[0075] The frame edge member 10 is a plate-shaped frame that is decorated with desired designs. In this embodiment, the frame edge member 10 also serves to suppress display defects in the display device 1. The frame edge member 10, for example, has higher rigidity than the plate-shaped member 20. Furthermore, the frame edge member 10 is an opaque member disposed around the periphery of the screen portion 21. The transmittance of the frame edge member 10 is lower than that of the plate-shaped member 20. Opaqueness refers to complete lack of visible light transmission, or substantially lack of visible light transmission. In this specification, visible light transmittance of less than 10% is defined as opaque. Additionally, the opaque area may also include portions that are transparent when viewed microscopically.

[0076] When viewed from the front, the frame edge component 10 can have uniform visible light transmittance, and the visible light transmittance gradually increases as it moves towards the outer side of the display device 1 (from the screen portion 21 towards the peripheral portion 23).

[0077] In this embodiment, the frame edge member 10 is housed in a frame-shaped groove 22 formed in the plate-shaped member 20. Alternatively, the frame edge member 10 can be described as being embedded in the groove 22. When viewed from the front, the frame edge member 10 is positioned between the screen portion 21 and the peripheral portion 23. For example, the frame edge member 10 is a plate-shaped frame surrounding the screen portion 21. The frame edge member 10 may also be positioned corresponding to the bezel portion (not shown) of the display panel 50. The width of the frame edge member 10 in the short side direction (i.e., the Z-axis direction) and the width in the long side direction (i.e., the Y-axis direction) can also be approximately equal to the width of the bezel portion in the short side direction (i.e., the Z-axis direction) and the width in the long side direction (i.e., the Y-axis direction), respectively.

[0078] Therefore, the frame portion can be hidden by the frame edge member 10. As a result, the frame portion, which is a structure of the display panel 50, becomes less visible to the user, thus improving the floating effect of the display device 1.

[0079] The thickness of the frame edge component 10 (i.e., the dimension in the X-axis direction, for example, Figure 5 The thickness t2 shown is approximately 1.6 mm, but it is not limited to this.

[0080] Here, further reference Figure 3 The structure of the frame edge component 10 will be described. Figure 3 This is an exploded perspective view showing the structure of the frame edge member 10 in this embodiment.

[0081] like Figure 3 As shown, the frame edge member 10 has a decorative member 11, an adhesive member 12, a protruding member 13, and an adhesive member 14. The decorative member 11 and the protruding member 13 are, for example, formed of metal. The frame edge member 10 has, for example, a laminated structure obtained by stacking two or more metal members.

[0082] The decorative component 11 is a plate-shaped frame with a desired decoration, disposed on the side of the first main surface 20a (positive X-axis side) closer to the protruding component 13 than the protruding component 13. The decorative component 11 is a component visually visible to the user within the frame edge component 10, functioning as a decorative panel. In this embodiment, the decorative component 11 is formed of SUS (Steel Use Stainless), but it is not limited to this. For example, the decorative component 11 can be formed by applying a desired paint to the surface of the SUS frame on the side of the first main surface 20a (positive X-axis side). In this embodiment, the decorative component 11 is formed by applying a black paint to the SUS frame.

[0083] The thickness (i.e., the dimension in the X-axis direction) of the decorative component 11 is about 0.3 mm, but it is not limited to this.

[0084] Furthermore, the decorative component 11 is not limited to being made of metal; for example, it may also be made of frame-shaped rigid plastic or the like.

[0085] The adhesive component 12 has a frame shape corresponding to the decorative component 11, and adheres the decorative component 11 to the protruding component 13. The adhesive component 12 is formed, for example, of a material capable of bonding metals together. In this embodiment, an acrylic resin adhesive is used as the adhesive component 12, but silicone resin adhesives or other adhesives may also be used. Alternatively, the adhesive component 12 may also be double-sided tape. When viewed from the front, since it is hidden by the decorative component 11, the adhesive component 12 is not visually apparent to the user.

[0086] The thickness (i.e., the dimension in the X-axis direction) of the adhesive component 12 is about 0.2 mm, but it is not limited to this.

[0087] The protruding member 13 is a plate-shaped frame for fixing the frame edge member 10 and the retaining member 90 (specifically, the peripheral fixing member 60) to the plate-shaped member 20 using screws 70. When viewed from the front, the protruding member 13 can overlap with the decorative member 11. The shape of the protruding member 13 when viewed from the front can be approximately equal to that of the decorative member 11. When viewed from the front, the protruding member 13 can have a shape that overlaps with the decorative member 11. When viewed from the front, since it is hidden by the decorative member 11, the protruding member 13 is not visually apparent to the user. Furthermore, the thickness of the protruding member 13 (i.e., the dimension in the X-axis direction) is, for example, greater than the thickness of the decorative member 11. The thickness of the protruding member 13 is, for example, about 0.8 mm, but is not limited to this. Additionally, the thickness of the protruding member 13 is the thickness of the first plate-shaped portion 13a and the second plate-shaped portion 13b, which will be described below.

[0088] The protruding member 13 is formed by a pair of first plate-shaped portions 13a having a strip in the long side direction (i.e., the Y-axis direction) and a pair of second plate-shaped portions 13b having a strip in the short side direction (i.e., the Z-axis direction). The first plate-shaped portions 13a and the second plate-shaped portions 13b are formed as a single unit, but they can also be separate components.

[0089] The first plate-shaped portion 13a has a convex first protrusion 13a1 protruding towards the second main surface 20b (negative X-axis side) on its surface. The second plate-shaped portion 13b has a convex second protrusion 13b1 protruding towards the second main surface 20b (negative X-axis side) on its surface. Threaded holes for threaded fixing by screws 70 are formed in both the first protrusion 13a1 and the second protrusion 13b1. When viewed from the front, the first protrusion 13a1 and the second protrusion 13b1 are positioned overlapping with the decorative member 11. Therefore, when viewed from the front, the screws 70 can be prevented from being visually confirmed by the user.

[0090] There is no particular limitation on the number of the first protrusion 13a1 and the second protrusion 13b1. For example, more than two can be provided on one side.

[0091] The rigidity of the protruding member 13 can be higher than that of the plate-shaped member 20. Furthermore, the rigidity of the protruding member 13 can, for example, be higher than that of the decorative member 11. In this embodiment, the protruding member 13 is formed of SECC steel (electroplated galvanized steel), but it is not limited to this.

[0092] Furthermore, the protruding part 13 is not limited to being made of metal; for example, it can also be made of frame-shaped rigid plastic.

[0093] The adhesive component 14 has a frame shape corresponding to the decorative component 11, connecting the protruding component 13 to the plate-shaped component 20 (specifically, the frame-shaped bottom surface that forms the groove 22 of the plate-shaped component 20 (see reference)). Figure 5 The bottom surface 22a) is shown to be bonded. The bonding component 14 is formed, for example, of a material capable of bonding metal to resin or glass. In this embodiment, an acrylic resin adhesive is used as the bonding component 14, but silicone resin adhesives or other adhesives may also be used. Alternatively, the bonding component 14 may be double-sided tape. When viewed from the front, the bonding component 14 is not visually apparent to the user because it is hidden by the decorative component 11.

[0094] The thickness (i.e., the dimension in the X-axis direction) of the adhesive component 14 is about 0.3 mm, but it is not limited to this.

[0095] Refer again Figure 1 as well as Figure 2 The plate-shaped member 20 is a light-transmitting plate-shaped member disposed in front of (e.g., at the very front) of the display device 1. The plate-shaped member 20 is configured to create a levitation effect that makes the image displayed on the display panel 50 appear to float in mid-air. In this embodiment, the plate-shaped member 20 has a rectangular shape. The thickness of the plate-shaped member 20 (i.e., the dimension in the X-axis direction, for example...) Figure 5 The thickness t1 shown is approximately 2.5 mm, but it is not limited to this. Furthermore, the plate-shaped member 20 is rigid. Also, when viewed from the front, the plate-shaped member 20 is larger than the display panel 50. Additionally, in this specification, "transmittance" refers to, for example, a visible light transmittance of 10% or more.

[0096] The plate-shaped component 20 is formed of a light-transmitting resin. For example, the plate-shaped component 20 is formed of a transparent resin. In this embodiment, the plate-shaped component 20 uses a transparent polycarbonate plate. The plate-shaped component 20 is a transparent plate. Here, "transparent" means not only completely transparent, i.e., with a visible light transmittance of 100%, but also substantially transparent. In this specification, a visible light transmittance of 90% or more is referred to as transparent.

[0097] The plate-shaped member 20 has a screen portion 21 and a peripheral portion 23. Furthermore, when viewed from the front, a frame-shaped groove 22 is formed on the plate-shaped member 20 between the screen portion 21 and the peripheral portion 23. The screen portion 21 and the peripheral portion 23 are integrally formed.

[0098] The screen portion 21 is a translucent portion positioned opposite the display panel 50, covering the entire display panel 50 (e.g., the display section of the display panel 50). In this embodiment, the screen portion 21 is implemented as part of a transparent polycarbonate sheet. Thus, because the screen portion 21 is transparent, the image displayed on the display panel 50 can be viewed from outside the display device 1. Furthermore, compared to the case where the screen portion 21 is formed by a through hole or the like in the plate-like member 20, the area from the screen portion 21 to the peripheral portion 23 can be made flat, making it difficult for the user to discern the boundary between the screen portion 21 and the peripheral portion 23. Therefore, the levitation effect of the display device 1 can be improved.

[0099] The groove 22 is a frame-shaped recess that surrounds the image portion 21 when viewed from the front, and the frame edge member 10 is embedded in the groove 22. The size of the groove 22 corresponds to the size of the frame edge member 10. For example, the width (i.e., the dimension in the Y-axis direction or Z-axis direction) and depth (i.e., the dimension in the X-axis direction) of the groove 22 correspond to the corresponding dimensions of the frame edge member 10. The groove 22 is formed on the first main surface 20a of the plate-like member 20.

[0100] Alternatively, the groove 22 can be formed by processing the flat plate-shaped component 20 by laser processing or other methods, or it can be formed in a way that the groove 22 is present during the molding of the plate-shaped component 20 (e.g., during resin molding).

[0101] The peripheral portion 23 is a translucent portion disposed on the outer side of the frame member 10 when viewed from the front. The peripheral portion 23 surrounds the display panel 50 when viewed from the front. For example, the peripheral portion 23 is transparent. Because the display device 1 has a transparent peripheral portion 23 on the outer side of the screen portion 21, the user can easily perceive that the image displayed on the display panel 50 appears to be suspended in mid-air. That is, a floating effect is achieved in the display device 1. Furthermore, the peripheral portion 23 does not overlap with the display panel 50 when viewed from the front. Additionally, for example, the user can directly touch the peripheral portion 23.

[0102] The area of ​​the peripheral portion 23 is not particularly limited; for example, it can be more than twice the area of ​​the frame member 10. This increases the distance from the end of the display panel 50 to the end of the peripheral portion 23. That is, it increases the distance from the image displayed on the display panel 50 to the end of the plate-shaped member 20, making it harder for the user to spot the end of the plate-shaped member 20 when viewing the image. Therefore, it can suppress the reduction of the floating effect that occurs when the user spots the end of the plate-shaped member 20. The area of ​​the peripheral portion 23 can also be more than three times the area of ​​the frame member 10. This further suppresses the reduction of the floating effect that occurs when the user spots the end of the plate-shaped member 20.

[0103] The width of the peripheral portion 23 is not particularly limited. Furthermore, in this embodiment, the width of the peripheral portion 23 is fixed, but it can vary depending on its position. Additionally, the minimum width of the peripheral portion 23 can be more than twice the maximum width of the frame member 10. This can suppress the reduction of the floating effect when the user identifies the end of the plate-shaped member 20. Furthermore, the minimum width of the peripheral portion 23 can also be more than three times the maximum width of the frame member 10. This can further suppress the reduction of the floating effect. Additionally, the minimum width of the frame member 10 can be more than 10% of the length of the long side of the display panel 50. This can suppress the reduction of the floating effect when the user identifies the end of the plate-shaped member 20.

[0104] Furthermore, no opaque parts are provided on the outer side of the periphery 23 of the plate-shaped member 20. As a result, the levitation effect can be reduced as the user identifies the end of the plate-shaped member 20.

[0105] Additionally, the plate-shaped component 20 may have a hard coating on its surface. The hard coating may, for example, be an acrylic-based hard coating. In this embodiment, the plate-shaped component 20 has a substrate formed of polycarbonate and a hard coating formed on the surface of that substrate. The hard coating may be provided, for example, on the first main surface 20a side of the substrate (positive X-axis side), but is not limited thereto. By providing the hard coating, the flame resistance (flame retardancy) of the display device 1 can be improved.

[0106] Here, refer to Figure 4 as well as Figure 5 The structure of the front panel 30, namely the structure of the plate-shaped member 20 of the frame edge member 10 housed in the slot 22, will be explained. Figure 4 This is a front view of the front panel 30 of this embodiment. Figure 5 It means to use Figure 4 The diagram shows a cross-sectional view of the front panel 30 cut by the VV cut line. The VV cut line is the cut line that passes through the first protrusion 13a1 formed in the first plate-like portion 13a when viewed from the front.

[0107] like Figure 4 As shown, with the frame member 10 housed in the slot 22, the first protrusion 13a1 and the second protrusion 13b1 cannot be visually confirmed. However, since the peripheral portion 23 is transparent, the rear side of the display device 1 can be visually confirmed through this peripheral portion 23.

[0108] like Figure 5As shown, the frame edge member 10 housed in the groove 22 abuts against the bottom surface 22a forming the groove 22. The groove 22 does not penetrate the plate-shaped member 20 in the thickness direction, and its depth (i.e., the dimension in the X-axis direction) is the same as the thickness t2 of the frame edge member 10. That is, when the frame edge member 10 is housed in the groove 22, the surface of the first main surface 20a (positive X-axis side) of the frame edge member 10 is on the same plane as the first main surface 20a. The front panel 30 is arranged so that the frontmost surface (positive X-axis side) of the decorative member 11 and the frontmost surface (i.e., the first main surface 20a) of the plate-shaped member 20 are on the same plane. In other words, the front panel 30 is arranged so that the positive X-axis surfaces of the screen portion 21, the decorative member 11, and the peripheral portion 23 are on the same plane. It can also be said that the surface of the first main surface 20a side (positive X-axis side) of the front panel 30 becomes a flat surface through the screen portion 21, the frame edge member 10, and the peripheral portion 23. In addition, the thickness t2 is the total thickness of the decorative part 11, the adhesive part 12, the protruding part 13, and the adhesive part 14.

[0109] The bottom surface 22a forms the front side (positive X-axis side) of the plate-shaped member 20. That is, the bottom surface 22a is a part of the first main surface 20a. The contact between the bottom surface 22a and the frame edge member 10 is an example of the contact between the first main surface 20a and the frame edge member 10.

[0110] A through hole 24 for inserting the first protrusion 13a1 is formed on the bottom surface 22a at a position corresponding to the first protrusion 13a1. The through hole 24 penetrates the plate-shaped member 20 in the thickness direction. The through hole 24 is located at a position overlapping the frame edge member 10 when viewed from the front. In addition, a through hole 24 for inserting the second protrusion 13b1 is formed on the bottom surface 22a at a position corresponding to the second protrusion 13b1. Through holes 24 are provided on both the first protrusion 13a1 and the second protrusion 13b1.

[0111] Refer again Figure 1 as well as Figure 2The adhesive component 40 is light-transmitting and bonds the plate-shaped component 20 to the display panel 50. The adhesive component 40 can be disposed on the entire contact surface between the plate-shaped component 20 and the display panel 50, or only on a portion of the contact surface. As the adhesive component 40, optical adhesive sheet (OCA: Optical Clear Adhesive), optical adhesive (OCR: Optical Clear Resin) or double-sided tape can be used. In this embodiment, OCA is used as the adhesive component 40. Specifically, in this embodiment, acid-free OCA is used as the adhesive component 40. By using acid-free OCA, it is possible to suppress the generation of exhaust gas under high-temperature loads. Acid-free OCA is, for example, OCA that does not contain materials that corrode metal wiring (e.g., monomers containing acidic groups). However, the OCA does not necessarily have to be acid-free.

[0112] Alternatively, the plate-shaped component 20 and the display panel 50 can be joined by other joining components, such as transparent screws.

[0113] Here, refer to Figure 6 The optical properties of the adhesive component 40 are described. Figure 6 This is a graph showing the spectral transmittance of the adhesive component 40 in this embodiment. Figure 6 The diagram also shows the plate-shaped component 20 and the plate-shaped component 20 to which the adhesive component 40 is attached. Figure 6 The spectral characteristics of the plate-shaped component (+OCA) in the middle. Figure 6 The vertical axis represents transmittance, and the horizontal axis represents the wavelength of light.

[0114] like Figure 6 As shown, the transmittance of the adhesive component 40 for light in low-wavelength regions (e.g., regions below approximately 415 nm) is higher than that of the plate-shaped component 20. For example, the transmittance of the plate-shaped component 20 is less than 10% when the wavelength is below 380 nm, while the transmittance of the adhesive component 40 is more than 10% when the wavelength is below 380 nm. Furthermore, the transmittance of the adhesive component 40 for light in high-wavelength regions (e.g., regions higher than approximately 415 nm) is lower than that of the plate-shaped component 20. For example, while the transmittance of the plate-shaped component 20 is more than 90% when the wavelength is above 450 nm, the transmittance of the adhesive component 40 is more than 80% when the wavelength is above 450 nm.

[0115] in addition, Figure 6 The spectral transmittance shown is an example and is not limited to this.

[0116] Refer again Figure 1 as well as Figure 2The display panel 50 is a flat panel display panel for displaying images. In this embodiment, the display panel 50 is an organic EL display panel. Thus, by using an organic EL display panel, which excels at displaying black, as the display panel 50, the floating effect of the display device 1 can be improved, especially when displaying images with a black background.

[0117] The display panel 50, for example, includes: a display section composed of a plurality of pixels arranged in a two-dimensional shape, which is the portion of the display panel 50 that displays images; and a border section (not shown) disposed around the periphery of the display section, which does not display images. Additionally, the display panel 50 may also include, for example, a circuit board (e.g., described later). Figure 8B The printed circuit board 110 shown above has a control circuit for controlling the display panel 50; a drive circuit (not shown) for driving the display unit; and a flexible wiring board (such as those described later). Figure 8B The FPC100 shown is used to connect the circuit board and the drive circuit; etc.

[0118] The shape of the display panel 50 is, for example, rectangular, but not limited to this; it can also be oval, etc.

[0119] The display panel 50 is rigid. Furthermore, the display panel 50 does not overlap with the peripheral portion 23 when viewed from the front. Additionally, the display panel 50 is held, for example, by the plate-like member 20 and the holding member 90.

[0120] Screw 70 is a fastening member used to secure the frame edge member 10 to the retaining member 90. In this embodiment, screw 70 secures the frame edge member 10 and the retaining member 90 (specifically, the peripheral fixing member 60) to the plate-shaped member 20. Screw 70 is threaded onto the first protrusion 13a1 and the second protrusion 13b1, thus securing the frame edge member 10 and the retaining member 90 to the plate-shaped member 20. Each of the plurality of screws 70 is positioned at a location overlapping the frame edge member 10 when viewed from the front. Screw 70 is an example of a fixing member.

[0121] In addition, Figure 2 The diagram shows four screws 70, but the number of screws 70 is not particularly limited as long as they can secure the frame edge member 10 and the retaining member 90. Furthermore, the securing member is not limited to screws 70; any component positioned to overlap with the frame edge member 10 when viewed from the front and capable of securing both the frame edge member 10 and the retaining member 90 is acceptable. The securing member can be, for example, a pin or an adhesive component. For instance, the adhesive force of the adhesive component used to secure the frame edge member 10 and the retaining member 90 can be higher than that of the adhesive component 40.

[0122] The retaining member 90 is used to suppress display defects such as peeling between the plate-shaped member 20 and the display panel 50 by fixing it to the plate-shaped member 20 together with the frame edge member 10 via screws 70. For example, by fixing the frame edge member 10 and the retaining member 90 to the plate-shaped member 20 with screws 70, the stress applied to the plate-shaped member 20 when a load is applied to the outer periphery of the display device 1 can be reduced. The retaining member 90 is disposed on the second main surface 20b side (negative X-axis side) of the plate-shaped member 20. The retaining member 90 can, for example, be used to fix the display panel 50 with the surface opposite to the plate-shaped member 20 (the surface of the retaining member 90 on the positive X-axis side). In addition, the rigidity of the retaining member 90 is, for example, higher than that of the plate-shaped member 20. In addition, the retaining member 90 can, for example, be disposed in a position that does not overlap with the peripheral portion 23 when viewed from the front.

[0123] The retaining member 90 includes a peripheral fixing member 60 and a heat dissipation member 80. Furthermore, the retaining member 90 only needs to have at least the peripheral fixing member 60. In this embodiment, the peripheral fixing member 60 and the heat dissipation member 80 are separate components.

[0124] The peripheral fixing member 60 is a component used to suppress display defects in the display device 1. For example, the peripheral fixing member 60 reduces the stress applied to the plate-shaped member 20; that is, the peripheral fixing member 60 suppresses deformation of the plate-shaped member 20 due to stress. The peripheral fixing member 60, for example, has higher rigidity than the plate-shaped member 20. The peripheral fixing member 60 is an opaque component disposed at the periphery of the screen portion 21 when viewed from the front.

[0125] The peripheral fixing member 60 is a plate-shaped frame, configured such that at least a portion overlaps with the frame edge member 10 when viewed from the front. In this embodiment, the peripheral fixing member 60 overlaps entirely with the frame edge member 10 when viewed from the front. The shape of the peripheral fixing member 60 when viewed from the front can be approximately the same as that of the frame edge member 10. The width of the peripheral fixing member 60 in the short side direction (i.e., the Z-axis direction) and the width of the peripheral fixing member 60 in the long side direction (i.e., the Y-axis direction) can be approximately equal to the width of the frame edge member 10 (e.g., the protruding member 13) in the short side direction (i.e., the Z-axis direction) and the width of the frame edge member 10 in the long side direction (i.e., the Y-axis direction), respectively. For example, since the peripheral fixing member 60 is hidden by the frame edge member 10 when viewed from the front, it will not be visually confirmed by the user. In addition, the peripheral fixing member 60 does not overlap with the peripheral portion 23 when viewed from the front. The peripheral fixing member 60 is an example of a frame member.

[0126] Therefore, the peripheral fixing component 60 can be hidden by the frame edge component 10. As a result, the floating effect of the display device 1 can be improved because the peripheral fixing component 60 is difficult for the user to visually confirm.

[0127] When viewed from the front, the peripheral fixing component 60 has through holes (not shown) formed at positions corresponding to the first protrusion 13a1 and the second protrusion 13b1 of the protruding component 13, respectively, through which the screw 70 can be inserted.

[0128] The heat dissipation component 80 is a component used to dissipate heat generated by the display panel 50. The heat dissipation component 80 is disposed on the second main surface 20b side (negative X-axis side) of the display panel 50. The heat dissipation component 80 is, for example, a plate-shaped component, which may be configured to at least partially contact the surface (back side) of the second main surface 20b side of the display panel 50, or it may be separated from the back side, i.e., configured through an air layer. The heat dissipation component 80 is, for example, configured opposite to the display panel 50.

[0129] In this embodiment, the peripheral fixing member 60 and the heat dissipation member 80 are each formed of metal (or alloy). The peripheral fixing member 60 and the heat dissipation member 80 may be formed of different metals, for example. The peripheral fixing member 60 may be formed of a metal with higher rigidity than the heat dissipation member 80, and the heat dissipation member 80 may be formed of a metal with higher heat dissipation performance than the peripheral fixing member 60. In this embodiment, the peripheral fixing member 60 is formed of SECC steel (electroplated zinc steel), but it is not limited to this. The peripheral fixing member 60 may, for example, be formed of the same metal as the protruding member 13. Furthermore, the heat dissipation member 80 may be formed of an aluminum alloy, but it is not limited to this; it may also be formed of a magnesium alloy or a single metallic substance.

[0130] Furthermore, the peripheral fixing member 60 and the heat dissipation member 80 are not limited to being made of metal (or alloy). The peripheral fixing member 60 may also be made of, for example, a frame-shaped rigid plastic. The heat dissipation member 80 may also be made of a thermally conductive resin.

[0131] With the frame edge member 10 and the retaining member 90 fixed by screws 70, a portion of the plate-shaped member 20 exists between the frame edge member 10 and the retaining member 90. The frame edge member 10, the plate-shaped member 20, and the retaining member 90 are fixed together by screws 70. In other words, the frame edge member 10 and the retaining member 90 do not contact each other. Thus, for the display device 1 of this embodiment, when the frame edge member 10 and the retaining member 90 are fixed, the plate-shaped member 20, which is a transparent member, is sandwiched between the frame edge member 10 and the retaining member 90. In addition, the plate-shaped member 20 can contact both the frame edge member 10 and the retaining member 90.

[0132] Here, further reference Figure 7 The structure of the retaining component 90 will be explained. Figure 7 This is a partial perspective view showing the configuration of the rear side of the display device 1 according to this embodiment.

[0133] like Figure 7As shown, screw 70 is threaded onto protruding member 13 with its head facing the second main surface 20b side (negative X-axis side). Additionally, peripheral fixing member 60 is provided around the periphery of heat dissipation member 80 when viewed from the front.

[0134] The peripheral fixing member 60 has a plate-shaped portion 61, a first thick-walled portion 62, and a second thick-walled portion 63. The plate-shaped portion 61, the first thick-walled portion 62, and the second thick-walled portion 63 may be formed as a single unit, but are not limited thereto.

[0135] The plate-shaped part 61 is a plate-shaped frame.

[0136] The first thick-walled portions 62 are formed at the locations where screws 70 are installed when viewed from the front, to increase the strength of the portions where screws 70 are installed. The first thick-walled portions 62 are thick-walled portions that protrude from the plate-like portion 61 toward the second main surface 20b (negative X-axis side). The first thick-walled portions 62 may have, for example, a cuboid shape, but are not limited to this. The first thick-walled portions 62 are provided separately from each other. Through holes formed in the peripheral fixing member 60 for inserting screws 70 penetrate both the plate-like portion 61 and the first thick-walled portions 62.

[0137] The second thick-walled portion 63 is a plate-shaped portion extending along the long side of the peripheral fixing member 60. In this embodiment, the second thick-walled portion 63 extends in the Y-axis direction. When viewed from the front, the second thick-walled portion 63 is positioned where it does not overlap with the first thick-walled portion 62, and for example, its thickness is greater than that of the first thick-walled portion 62. By providing the second thick-walled portion 63, the strength of the long side of the peripheral fixing member 60 can be improved.

[0138] It is believed that the strength of the peripheral fixing member 60 is dominated by the strength of the threaded portion. Therefore, by increasing the strength of the threaded portion, the stress applied to the plate member 20 can be effectively reduced. In the display device 1, by providing the first thick-walled portion 62, the strength of the peripheral fixing member 60 can be effectively increased. In addition, the thickness of the portion of the peripheral fixing member 60 that has little impact on strength is relatively thin, thus reducing weight.

[0139] Here, refer to Figures 8A to 8C The configuration of the display device 1 when viewed from the side (Y-axis direction) will be described. Figures 8A to 8C From Figure 7 The direction of the arrow shown is indicated in the diagram of display device 1. Figure 8A This is a diagram showing the configuration of the display device 1 of this embodiment when viewed from the side. Figure 8B This diagram shows the configuration of the display device 1 of this embodiment when the peripheral fixing member 60 is removed, viewed from the side. Figure 8C This is a side view of the configuration of the display device 1 in this embodiment, with the peripheral fixing member 60 and the plate-shaped member 20 removed. Additionally, in Figures 8A to 8C The illustrations of components such as adhesive component 40 are omitted in the text.

[0140] like Figure 8A As shown, the plate-shaped member 20 and the peripheral fixing member 60 are fixed to each other by screws 70 in a manner that they are in contact with each other. Specifically, the second main surface 20b of the plate-shaped member 20 abuts against the surface of the first main surface 20a (positive X-axis side) of the plate-shaped portion 61.

[0141] like Figure 8B As shown, the display device 1 may include an FPC (Flexible Printed Circuits) 100, a printed circuit board 110, and a heat dissipation component 120.

[0142] FPC100 is a flexible substrate that connects the display panel 50 and the printed circuit board 110. FPC100 is configured to bend towards the back side of the display panel 50. By hiding FPC100, which is used to provide image signals, etc., on the back side of the display device 1, the levitation effect of the display device 1 can be further improved.

[0143] The printed circuit board 110 is a substrate on which various electronic components are mounted for displaying images on the display panel 50.

[0144] The heat dissipation component 120 is a plate-shaped component for dissipating heat generated by the printed circuit board 110. The heat dissipation component 120 is configured, for example, to at least partially contact the printed circuit board 110. Furthermore, the heat dissipation component 120 is, for example, thermally connected to the heat dissipation component 80. The heat dissipation component 120 and the heat dissipation component 80 are connected, for example, via a heat transfer component 121. Additionally, the heat dissipation component 80 may, for example, partially abut against the plate-shaped component 20 and be secured by screws 70. Furthermore, in... Figure 8B as well as Figure 8C In, with Figure 8A The transmission component 121 is shown in a thicker diagram.

[0145] In addition, of the first protrusion 13a1 and the second protrusion 13b1, only the second protrusion 13b1 is used for fixing the heat dissipation component 80, but it is not limited to this.

[0146] like Figure 8C As shown, the frame edge component 10 and the retaining component 90 are fixed by screws 70 threaded onto the first protrusion 13a1 and the second protrusion 13b1 protruding from the frame edge component 10 (specifically the protruding component 13) toward the negative X-axis side, and a portion of the plate-shaped component 20 is clamped between them.

[0147] [2. Simulation Results]

[0148] Next, refer to Figures 9 to 14The simulation results of the stress applied to the display device 1 configured as described above are explained. Figures 9 to 14 The diagram schematically illustrates the configuration of the display device 1 used for simulation, omitting some parts or altering their shapes. Figure 9 This is a first figure used to illustrate the load applied in a simulation of the display device 1 according to this embodiment. Figure 10 This is a diagram used to illustrate the load applied in a simulation of a display device for a comparative example. Figure 11A This is a second figure used to illustrate the load applied in a simulation of the display device 1 according to this embodiment.

[0149] like Figure 9 As shown, in the display device 1 of this embodiment, there is a configuration in which a first protrusion 13a1 and a second protrusion 13b1 are provided, and the frame edge member 10 and the retaining member 90 (specifically, the peripheral fixing member 60) are fixed to the plate-shaped member 20 by screws 70 (the configuration described above). That is, in the display device 1 of this embodiment, there is a configuration in which the frame edge member 10 and the retaining member 90 reinforce the plate-shaped member 20.

[0150] like Figure 10 As shown, in the comparative example display device, there is a configuration in which the first protrusion 13a1 and the second protrusion 13b1 are not provided, and the frame edge member 10 and the retaining member 90 (specifically, the peripheral fixing member 60) are not fixed to the plate-shaped member 20 by screws 70. That is, in the comparative example display device, the plate-shaped member 20 is not reinforced.

[0151] The simulation results shown below illustrate the effect of whether or not the frame edge component 10 and the retaining component 90 are fixed to the plate component 20 by screws 70.

[0152] Furthermore, the display device 1 of this embodiment and the display device of the comparative example are identical in configuration except for whether screws 70 are used to fix the frame member 10 and the retaining member 90 to the plate member 20. For example, the rigidity of the plate member 20 and the display panel 50 are the same in the display device 1 of this embodiment and the display device of the comparative example.

[0153] like Figure 9 as well as Figure 10As shown, a load of 1 N (Newtons) is applied to the ends (the ends on the positive sides of the Y-axis and Z-axis) of these two display devices in the direction of the arrow (from the negative side of the X-axis to the positive side of the X-axis). Specifically, a load of 1 N is applied to the ends of the plate-shaped member 20 of the display device 1 of this embodiment and the ends of the plate-shaped member 200 of the comparative example display device. The ends are the portions within the peripheral portion 23 when viewed from above. In addition, the plate-shaped member 20 and the plate-shaped member 200 are, for example, the same components.

[0154] in addition, Figure 11A This is a perspective view showing the load applied to display device 1. The same load is applied to the display device of the comparative example.

[0155] First, the simulation results of the display device 1 in this embodiment will be explained. Figure 11B This is a graph showing the simulation results of the shape deformation of the display device 1 in this embodiment for a load of 1N. Figure 11C The first graph shows the simulation results of the stress applied to the display device 1 of this embodiment under a load of 1N. Figure 11D This is a graph showing the simulation results of the stress applied to the display panel 50 of the display device 1 of this embodiment under a load of 1N.

[0156] like Figure 11B As shown, the maximum shape deformation under a 1N load is only 0.0092046mm, which is extremely small. Furthermore, the shape deformation refers to the amount of deformation of the front panel 30 (specifically, the plate-shaped member 20) of the display device 1 in this embodiment towards the positive X-axis.

[0157] like Figure 11C As shown, the maximum stress applied to the display device 1 under a load of 1N is approximately 1.6MPa. Furthermore, in Figure 11C In this context, the stress applied to the front panel 30 (specifically, the plate-shaped member 20) of the display device 1 of this embodiment is indicated.

[0158] like Figure 11D As shown, the maximum stress applied to the display panel 50 under a load of 1N is approximately 1.6MPa.

[0159] Next, refer to Figures 12A to 12C The simulation results of the display device for the comparative example are explained. Figure 12A This is a graph showing the simulation results of the shape deformation of a display device for a comparative example under a 1N load. Figure 12B The first figure shows the simulation results of the stress applied to the display device of the comparative example under a load of 1N. Figure 12CThis is a graph showing the simulation results of the stress applied to the display panel 50 of the comparative example display device under a load of 1N.

[0160] like Figure 12A As shown, the maximum shape deformation under a 1N load is 0.254mm, which is considerably larger than that of display device 1. That is, the comparative display device is prone to deformation under load. Consequently, in the comparative display device, the display panel 50 is easily separated from the front panel 230 (specifically, the plate-like member 200). Furthermore, the shape deformation amount represents the amount of deformation of the front panel 230 of the comparative display device towards the positive X-axis.

[0161] like Figure 12B As shown, the maximum stress applied to display device 1 under a load of 1N is 17MPa, which is more than 10 times higher than that under the condition of display device 1. Furthermore, in Figure 12B In the figure, the stress applied to the front panel 230 (specifically, the plate-shaped member 200) of the display device of the comparative example is indicated.

[0162] like Figure 12C As shown, the maximum stress applied to the display panel 50 under a load of 1N is 17MPa, which is more than 10 times that of the display device 1.

[0163] Next, refer to Figure 13 as well as Figure 14 The simulation results of the stress applied to the display device when viewed from the side are explained. Figure 13 The second figure shows the simulation results of the stress applied to the display device 1 of this embodiment under a load of 1N. Figure 14 The second figure shows the simulation results of the stress applied to the display device of the comparative example under a load of 1N.

[0164] like Figure 13 as well as Figure 14 As shown, the display panel 50 of the display device 1 of this embodiment is not subjected to a stress exceeding 1.6 MPa, while the display panel 50 of the comparative example display device is subjected to a stress exceeding 6 MPa (specifically, a maximum of 17 MPa). This indicates that the display device 1 according to this embodiment can reduce the stress applied to the display panel 50. That is, the display device 1 of this embodiment can reduce the stress applied to the display panel 50 when a load is applied to the plate-shaped member 20. The display device 1 fixes the frame edge member 10 and the retaining member 90 to the plate-shaped member 20 by screws 70, thereby reducing the amount of deformation of the plate-shaped member 20 under load, and thus also reducing the stress applied to the display panel 50.

[0165] Therefore, the display device 1 of this embodiment can suppress the deformation of the plate-shaped member 20, and as a result, can suppress the stress applied to the display panel 50. That is, the display device 1 can suppress display defects such as peeling between the plate-shaped member 20 and the display panel 50 due to stress.

[0166] [3. Effects, etc.]

[0167] As described above, a display device 1 according to one aspect of the present invention includes: a display panel 50 having a display portion for displaying an image; a plate-like member 20 having a first main surface 20a and a second main surface 20b, with the display panel 50 disposed on the second main surface 20b side and having a screen portion 21 disposed at a position corresponding to the display portion; an opaque frame edge member 10 disposed around the periphery of the screen portion 21; an adhesive member 40 having light transmittance and for bonding the display panel 50 to the plate-like member 20; a retaining member 90 disposed on the second main surface 20b side of the plate-like member 20; and a fixing member (e.g., a plurality of screws 70) for fixing the frame edge member 10 and the retaining member 90 to the plate-like member 20. Furthermore, the plate-like member 20 also has a transparent peripheral portion 23 disposed on the outer side of the frame edge member 10.

[0168] Therefore, the display device 1 has a transparent peripheral portion 23 around the display panel 50, thus creating a floating effect where the image displayed on the display panel 50 appears to be suspended in mid-air. Furthermore, since the frame edge member 10 and the retaining member 90 are not fixed to the outer periphery of the peripheral portion 23 by means of a frame or similar component, the floating effect is not compromised during the fixing of the frame edge member 10 and the retaining member 90. Additionally, by fixing the frame edge member 10 and the retaining member 90 to the plate-shaped member 20, deformation of the plate-shaped member 20 when a load is applied to the outer periphery of the display device 1 can be suppressed. Therefore, in a display device capable of achieving a floating effect, a display device 1 can be realized that suppresses display defects without compromising the floating effect.

[0169] In addition, when the display device 1 is viewed from the front, the plate-shaped member 20 forms a frame-shaped groove 22 between the screen portion 21 and the peripheral portion 23, and the frame edge member 10 is housed in the groove 22.

[0170] Therefore, the display device 1 can reduce discomfort at the boundaries between the frame edge member 10 and the screen portion 21 and the peripheral portion 23, thereby improving the sense of suspension. That is, it can improve the suspension effect.

[0171] Furthermore, when the frame edge member 10 is housed in the slot 22, the surface of the frame edge member 10 on the first main surface 20a side is on the same plane as the first main surface 20a.

[0172] Therefore, since the surface on the first main surface 20a side (the surface on the positive side of the X-axis) of the frame edge component 10 is on the same plane as the first main surface 20a, the discomfort of the image edge can be eliminated, and the floating effect can be further improved. That is, the floating effect can be further improved.

[0173] Additionally, the fixing components include a plurality of screws 70 (an example of a plurality of fastening components) that are fastened by securing the frame edge component 10 and the retaining component 90. The frame edge component 10 has a protruding component 13 that is fastened by the plurality of screws 70 and a decorative component 11 disposed on the side closer to the first main surface 20a than the protruding component 13.

[0174] Therefore, compared to cases where adhesive components are used, the frame edge member 10 and the retaining member 90 can be securely fixed. For example, even when a greater load is applied to the end of the plate-shaped member 20, the fixed detachment of the frame edge member 10 and the retaining member 90 can be suppressed. As a result, the display device 1 can more reliably suppress the occurrence of display defects.

[0175] Furthermore, when viewing the display device 1 from the front, the entire protruding part 13 overlaps with the decorative part 11.

[0176] Therefore, since the protruding part 13 can be hidden by the decorative part 11, it is difficult for the user to visually confirm the protruding part 13, thus the floating effect of the display device 1 can be further improved without compromising the decorative effect.

[0177] In addition, at least one of the frame edge member 10 and the retaining member 90 has a higher rigidity than the plate member 20.

[0178] Therefore, when a load is applied to the outer periphery of the display device 1, deformation of the plate-shaped member 20 can be effectively suppressed by at least one of the frame edge member 10 and the retaining member 90. Thus, according to the display device 1, display defects can be further suppressed.

[0179] In addition, the plate-shaped member 20 is formed of a light-transmitting resin, and at least one of the frame member 10 and the retaining member 90 is formed of metal.

[0180] Thus, at least one of the frame edge member 10 and the retaining member 90 can easily have the desired rigidity.

[0181] In addition, the plate-shaped component 20 has a substrate formed of polycarbonate and a hard coating formed on the surface of the substrate.

[0182] Therefore, when polycarbonate is used in the plate-shaped component 20, the heat resistance of the display device 1 can be improved.

[0183] In addition, the retaining member 90 has a frame-shaped peripheral fixing member 60 (an example of a frame member) that overlaps at least partly with the frame edge member 10 when the display device 1 is viewed from the front.

[0184] Therefore, by using the frame edge member 10 and the frame-shaped peripheral fixing member 60, display defects of the display device 1 can be suppressed. In addition, since at least a portion of the peripheral fixing member 60 can be hidden by the frame edge member 10, the peripheral fixing member 60 is difficult for the user to identify, thereby further improving the floating effect of the display device 1.

[0185] In addition, the retaining component 90 also has a heat dissipation component 80 for releasing heat generated by the display panel 50, and a peripheral fixing component 60 is disposed at the periphery of the heat dissipation component 80 and has a higher rigidity than the heat dissipation component 80.

[0186] Therefore, since the heat dissipation component 80 is difficult for the user to detect, the levitation effect of the display device 1 can be further improved, and the heat generated by the display panel 50 can be released. In addition, even if the rigidity of the heat dissipation component 80 is low, the peripheral fixing component 60 can suppress the occurrence of display defects. Such a retaining component 90 can achieve both the desired heat dissipation and the desired rigidity.

[0187] In addition, the retaining component 90 is positioned so that it does not overlap with the peripheral portion 23 when the display device 1 is viewed from the front.

[0188] Therefore, since the user has difficulty recognizing the holding part 90, the floating effect of the display device 1 can be further improved.

[0189] In addition, the screen portion 21 of the plate-shaped component 20 is transparent.

[0190] Therefore, since the screen portion 21 is transparent, the image displayed on the display panel 50 can be viewed from outside the display device 1.

[0191] In addition, the display panel 50 is an organic EL (electroluminescent) display panel.

[0192] Therefore, by using an organic EL display panel that excels at displaying black as the display panel 50, the floating effect of the display device 1 can be improved, especially when displaying images with a black background.

[0193] (Other implementation methods)

[0194] The above description describes one or more embodiments of the display device 1, but the present invention is not limited to these embodiments. Various modifications to this embodiment that can be conceived by those skilled in the art, and combinations of different embodiments' constituent elements, are also included in the present invention, as long as they do not depart from its spirit.

[0195] For example, in the above embodiment, an organic EL display panel is used as the display panel 50, but other flat panel display panels such as liquid crystal display panels and quantum dot LED (quantum-dot light-emitting diode) display panels can also be used as the display panel.

[0196] Furthermore, in the above embodiment, a transparent polycarbonate is used to form the plate-shaped component 20, but other transparent components may also be used to form the plate-shaped component 20. For example, a transparent resin other than polycarbonate, such as acrylic, may be used to form the plate-shaped component 20, or glass may be used to form the plate-shaped component 20.

[0197] In addition, in the above embodiment, a groove 22 is formed in the plate-shaped member 20, but the groove 22 may not be formed. The frame edge member 10 may also be fixed to the surface of the flat plate-shaped member 20.

[0198] Furthermore, it is sufficient that the rigidity of at least one of the frame edge member 10 (e.g., the protruding member 13) and the retaining member 90 (e.g., the peripheral fixing member 60) in the above embodiment is higher than the rigidity of the plate-shaped member 20. For example, at least one of the frame edge member 10 (e.g., the protruding member 13) and the retaining member 90 (e.g., the peripheral fixing member 60) in the above embodiment can be formed of metal. In this way, in the display device 1, for example, if the rigidity of at least one of the protruding member 13 and the peripheral fixing member 60 is configured to be higher than the rigidity of the plate-shaped member 20, it is less prone to deformation.

[0199] Furthermore, in the above embodiment, an example of the frame edge member 10 being in contact with the bottom surface 22a of the plate-shaped member 20 has been described, but other members may also be provided between the frame edge member 10 and the bottom surface 22a.

[0200] Furthermore, in the above embodiment, an example of contact arrangement between the peripheral fixing member 60 and the second main surface 20b of the plate-shaped member 20 has been described, but other members may also be arranged between the peripheral fixing member 60 and the second main surface 20b.

[0201] Furthermore, in the above embodiment, metal is used to form the peripheral fixing member 60, but other materials with higher rigidity than the plate-shaped member 20 may also be used to form the peripheral fixing member 60. For example, a resin material with higher rigidity than polycarbonate may be used to form the peripheral fixing member 60. In this case, the peripheral fixing member 60 may be formed of transparent resin or opaque resin.

[0202] Furthermore, the peripheral fixing member 60 of the above embodiment may not have at least one of the first thick-walled portion 62 and the second thick-walled portion 63. For example, the thickness of the peripheral fixing member 60 may be uniform.

[0203] Furthermore, in the above embodiment, an example was described where the peripheral fixing member 60 and the heat dissipation member 80 are separate components; however, this is not a limitation, and the peripheral fixing member 60 and the heat dissipation member 80 may also be integrally formed components. In this case, the peripheral fixing member 60 and the heat dissipation member 80 are formed of the same metal.

[0204] Industrial applicability

[0205] This invention can be used as a display device to achieve a floating effect, and is especially suitable for use as a wall-mounted display device.

Claims

1. A display device, characterized by comprising: Possessing: a display panel having a display portion that displays an image; a plate-shaped member having a first main surface and a second main surface, the display panel being arranged on the second main surface side, and having a picture portion arranged at a position corresponding to the display portion; an opaque frame member arranged on a periphery of the picture portion; an adhesive member having light transmittance that adheres the display panel to the plate-shaped member; a holding member arranged on the second main surface side of the plate-shaped member; and a fixing member that fixes the frame member and the holding member to the plate-shaped member, the plate-shaped member further has a transparent peripheral portion arranged on an outer side of the frame member.

2. The display device according to claim 1, wherein when the display device is viewed from the front, the plate-shaped member forms a frame-shaped groove between the picture portion and the peripheral portion, the frame member is housed in the groove.

3. The display device according to claim 2, wherein in a state where the frame member is housed in the groove, a surface of the frame member on the first main surface side is on the same plane as the first main surface.

4. The display device according to any one of claims 1 to 3, wherein the fixing member includes a plurality of fastening members that are fixed by fastening the frame member and the holding member, the frame member has a protruding member that is fixed by the plurality of fastening members, and a decorative member arranged at a position closer to the first main surface side than the protruding member.

5. The display device according to claim 4, wherein when the display device is viewed from the front, the entire protruding member overlaps the decorative member.

6. The display device according to any one of claims 1 to 3, wherein at least one of the frame member and the holding member has rigidity higher than that of the plate-shaped member.

7. The display device according to claim 6, wherein the plate-shaped member is formed of a resin having light transmittance, the at least one of the frame member and the holding member is formed of a metal.

8. The display device according to any one of claims 1 to 3, wherein the plate-shaped member has a base material formed of polycarbonate, and a hard coat layer formed on a surface of the base material.

9. The display device according to any one of claims 1 to 3, wherein the holding member has a frame member that is frame-shaped and overlaps the frame member when the display device is viewed from the front.

10. The display device according to claim 9, wherein the holding member further has a heat dissipation member that dissipates heat generated by the display panel, the frame member is provided on a periphery of the heat dissipation member and has rigidity higher than that of the heat dissipation member.

11. The display device according to any one of claims 1 to 3, wherein the holding member is arranged at a position that does not overlap the peripheral portion when the display device is viewed from the front.

12. The display device according to any one of claims 1 to 3, wherein ​ The picture portion of the plate-shaped member is transparent.

13. The display device according to any one of claims 1 to 3, wherein The display panel is an organic EL display panel.

Images