Display device

Abstract

A display device is provided. The display device includes: a display panel having a first region, a second region, and a curved region between the first and second regions, the curved region being flexible; a support member located behind the display panel, including a first support member supporting the first region, a second support member supporting the second region, and a connecting portion connecting the first and second support members and having a thickness smaller than the thickness of the first or second support member; and a magnetic field generating portion located behind the support member, the magnetic field generating portion overlapping the curved region, wherein a magnetic field generated by the magnetic field generating portion interacts with a current in a component located in the magnetic field, causing the component to push the connecting portion toward the display panel.

Description

[0001] This application is a divisional application of Chinese patent application No. 202110793120.1, filed on July 14, 2021, entitled "Display Device". Cross-references to related applications

[0002] This application claims priority and benefit to Korean Patent Application No. 10-2020-0118485, filed with the Korean Intellectual Property Office on September 15, 2020, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] One or more embodiments relate to a display device. Background Technology

[0004] Display devices can be used as various electronic devices. For example, a display device can be a mobile electronic device such as a smartphone. In order to increase the area of ​​the display surface while reducing the overall size of the electronic device, the electronic device can be a foldable electronic device with a partially foldable display surface.

[0005] The information disclosed in this background section is only intended to enhance the understanding of the background, and therefore the information discussed in this background section does not necessarily constitute prior art. Summary of the Invention

[0006] One or more aspects of the embodiments relate to display devices, and for example, to display devices including display surfaces with relatively improved flatness.

[0007] In electronic devices, when the display surface is unfolded, there may be a problem that the display surface may not be flat at the folds (e.g., curved areas or areas where the display surface is bent).

[0008] Aspects of one or more exemplary embodiments include a display device comprising a display surface having relatively improved flatness. However, these are merely examples, and the scope of embodiments according to this disclosure is not limited thereto.

[0009] Additional aspects will be set forth in part in the description which follows, and in part will be apparent from the description or may be learned by practice of the embodiments of this disclosure presented.

[0010] According to some embodiments of the present disclosure, the display device includes (i) a display panel, (ii) a support member, and (iii) a magnetic field generating unit. The display panel has a first region, a second region, and a curved region located between the first region and the second region and having a shape extending in a direction intersecting an imaginary first straight line connecting the first region and the second region. The curved region is flexible. The support member is located behind the display panel and includes a first support member supporting the first region, a second support member supporting the second region, and a connecting portion connecting the first support member and the second support member and having a thickness smaller than the thickness of the first support member or the thickness of the second support member. The magnetic field generating unit is positioned such that it is configured to generate a magnetic field in a direction from the first support member toward the second support member.

[0011] According to some embodiments, the magnetic field generating part can be positioned such that the connecting part is located between the display panel and the magnetic field generating part.

[0012] According to some embodiments, the magnetic field generating part may include a first generating part and a second generating part, the first generating part may be positioned closer to the first support member than the second generating part, the second generating part may be positioned closer to the second support member than the first generating part, and the first generating part and the second generating part may define a stylus insertion space between the first generating part and the second generating part.

[0013] According to some embodiments, the first generating part may be connected to the first support member, and the second generating part may be connected to the second support member.

[0014] According to some implementations, the stylus insertion space may have a shape that extends in a direction intersecting an imaginary first straight line.

[0015] According to some embodiments, the first support member may include a first support member 1-1 and a first support member 1-2, the first support member 1-1 being positioned closer to the display panel than the first support member 1-2; the second support member may include a second support member 2-1 and a second support member 2-2, the second support member 2-1 being positioned closer to the display panel than the second support member 2-2; and the connecting portion may include a first connecting portion and a second connecting portion, the first connecting portion being positioned closer to the display panel than the second connecting portion.

[0016] According to some embodiments, the first-1 support member, the first connecting portion, and the second-1 support member can be integrally formed into a single body.

[0017] According to some embodiments, the first-second support member may have the same layer structure as the second-second support member.

[0018] According to some embodiments, the first-2 support members may include a heat dissipation layer and a shielding layer, the heat dissipation layer being positioned in a direction toward the first-1 support member, and the shielding layer being positioned such that the heat dissipation layer is located between the display panel and the shielding layer.

[0019] According to some embodiments, the second connection may include a layer having a lower hardness than the layer included in the first-second support members.

[0020] According to some embodiments, the thickness of the second connection portion may be less than the thickness of the first-2 support member or the thickness of the second-2 support member.

[0021] According to some implementation methods, when the angle between the upper surface of the first region and the upper surface of the second region is greater than or equal to a preset angle, the magnetic field generating unit can generate a magnetic field.

[0022] According to some implementation methods, when the angle between the upper surface of the first region and the upper surface of the second region is less than a preset angle, the magnetic field generating unit can be in a closed state.

[0023] According to some embodiments, when the upper surface of the first region and the upper surface of the second region are located on the same plane, the magnetic field generating part can generate a magnetic field.

[0024] According to some implementations, when the angle between the upper surface of the first region and the upper surface of the second region is less than 180°... ° At this time, the magnetic field generating unit can be in the off state.

[0025] According to some embodiments, when the angle between the upper surface of the first region and the upper surface of the second region is greater than or equal to a preset angle and the stylus is positioned such that the connecting part is between the display panel and the stylus, the magnetic field generating part can generate a magnetic field.

[0026] According to some embodiments, when the angle between the upper surface of the first region and the upper surface of the second region is less than a preset angle or the stylus is not positioned in a direction opposite to the direction from the connecting part toward the display panel, the magnetic field generating part can be in a closed state.

[0027] According to some embodiments, when the upper surface of the first region and the upper surface of the second region are on the same plane and the stylus is positioned such that the connecting part is between the display panel and the stylus, the magnetic field generating part can generate a magnetic field.

[0028] According to some implementations, when the angle between the upper surface of the first region and the upper surface of the second region is less than 180°... ° Alternatively, if the stylus is not positioned in the direction opposite to the direction from the connector toward the display panel, the magnetic field generating unit may be in the off state. Attached Figure Description

[0029] The above and other aspects, features, and characteristics of certain embodiments of this disclosure will become more apparent from the following description taken in conjunction with the accompanying drawings, in which: Figure 1 This is a schematic perspective view of a part of a display device according to some embodiments; Figure 2 It is based on some implementation methods Figure 1 A schematic cross-sectional view of a portion of the display device; Figure 3 It is based on some implementation methods Figure 2 A schematic enlarged view of part A of the display device; Figure 4 It is based on some implementation methods Figure 1 A schematic diagram illustrating the operating principle of the display device; Figure 5 According to some implementation methods, it will be Figure 1 A schematic concept diagram of a stylus used in a display device; Figure 6 This is a schematic cross-sectional view of a display device according to some embodiments; and Figure 7 This is a schematic perspective view of a display device according to some embodiments. Detailed Implementation

[0030] Reference will now be made in more detail to aspects of some exemplary embodiments illustrated in the accompanying drawings, wherein the same reference numerals throughout indicate the same elements. In this respect, the embodiments may take different forms and should not be construed as limited to the description set forth herein. Accordingly, embodiments are described below only with reference to the drawings to explain aspects of this description. As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items. Throughout this disclosure, the expression “at least one of a, b, and c” means only a, only b, only c, both a and b, both a and c, both b and c, all or variations thereof of a, b, and c.

[0031] Because this disclosure allows for various modifications and numerous implementations, the embodiments will be illustrated in the accompanying drawings and described in detail in the written description. The effects and features of these embodiments, as well as the methods for implementing them, will become clearer when the accompanying drawings are taken into account and the following detailed description is provided. However, these embodiments can be implemented in various forms and are not limited to the embodiments presented below.

[0032] In the following, embodiments according to the present disclosure will be described in more detail by explaining aspects of some embodiments with reference to the accompanying drawings. In the drawings, the same reference numerals denote the same elements.

[0033] In the following embodiments, it should be understood that when a component such as a layer, film, region, or plate is referred to as being "on" another component, the component can be directly on the other component, or an intermediary component may be present thereon. For ease of explanation, the dimensions of the components in the figures may be enlarged. In other words, since the dimensions and thicknesses of the components in the figures are arbitrarily shown for ease of explanation, the following embodiments are not limited thereto.

[0034] In the following implementation, the x-axis, y-axis, and z-axis are not limited to the three axes of a Cartesian coordinate system and can be interpreted in a broader sense. For example, the x-axis, y-axis, and z-axis can be perpendicular to each other, or they can represent different directions that are not perpendicular to each other.

[0035] Figure 1 This is a schematic perspective view of a part of a display device according to some embodiments. Figure 2 yes Figure 1 A schematic cross-sectional view of a portion of the display device. Figure 3 yes Figure 2 A schematic enlarged view of part A of the display device. For reference, in Figure 1 In the image, the display panel 10 is shown in a configuration or arrangement in which it is partially and slightly curved, and... Figure 2 and Figure 3 In the image, the display panel 10 is shown as being in a completely flat state without any bending.

[0036] The display device according to some embodiments may include a display panel 10, a support member 30, and a magnetic field generating unit 40 (e.g., in...). Figure 3 (As shown in the image).

[0037] The display panel 10 can display images. For this purpose, the display panel 10 may include a substrate and display devices such as organic light-emitting devices located on the substrate. Figure 1 In the image, the upper surface of the display panel 10 (the surface approximately in the +z direction) is shown as the display surface.

[0038] The display panel 10 may include a first region A1, a second region A2, and a curved region BA. The curved region BA is located between the first region A1 and the second region A2. When the display panel 10 is unfolded and not bent, the curved region BA has a shape extending in a direction (y-axis direction) intersecting an imaginary first straight line (parallel to the x-axis) connecting the first region A1 and the second region A2. The display panel 10 can be bent within the curved region BA. After bending within the curved region BA, the display panel 10 can return to its unbent state. In other words, the display panel 10 is a foldable display panel.

[0039] Because the display panel 10 has a foldable feature, the substrate included in the display panel 10 may include a polymer resin, such as polyethersulfone, polyacrylate, polyetherimide, polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyarylate, polyimide, polycarbonate, or cellulose acetate propionate. The substrate included in the display panel 10 can be modified in various ways. For example, the substrate may have a multilayer structure comprising two layers each containing a polymer resin, and a barrier layer located between the two layers and comprising an inorganic material such as silicon oxide, silicon nitride, or silicon oxynitride.

[0040] Various display devices may be located on the substrate. For example, an organic light-emitting device including a pixel electrode, a common electrode corresponding to the pixel electrode, and an intermediate layer disposed between the pixel electrode and the common electrode and including at least an emission layer may be located on the substrate. Thin-film transistors and capacitors for controlling electrical signals applied to the organic light-emitting device may be located on the substrate.

[0041] The display panel 10 can display one or more images in the first region A1, the second region A2, and the curved region BA. In other words, the display areas of the first region A1, the second region A2, and the curved region BA can be connected to each other to form a single entity.

[0042] The support member 30 is located behind the display panel 10. In other words, as Figure 2 and Figure 3 As shown, the display panel 10 may include a front surface (+z direction) and an opposite rear surface (-z direction), wherein the front surface includes a display surface. The support member 30 is located behind the display panel 10 to face the rear surface of the display panel 10.

[0043] The support member 30 may include a first support member 31, a second support member 32, and a connecting portion 33. The first support member 31 supports a first region A1 of the display panel 10. The second support member 32 supports a second region A2 of the display panel 10. The connecting portion 33 connects the first support member 31 to the second support member 32. Figure 2 and Figure 3As shown, the connecting portion 33 has a thickness thinner than the thickness of the first support member 31 or the thickness of the second support member 32. Figure 2 and Figure 3 As shown, the thickness of the first support member 31 can be the same as the thickness of the second support member 32.

[0044] The first support member 31 and the second support member 32 can support the entire display panel 10. As described above, the display panel 10 can be configured to bend in the bending region BA. However, the display panel 10 can have substantially the same structure in each of the first region A1, the second region A2, and the bending region BA. Accordingly, the display panel 10 can theoretically have a bendable structure not only in the bending region BA but also in the first region A1 or the second region A2. Since the first support member 31 and the second support member 32 support the first region A1 and the second region A2 of the display panel 10, bending in the first region A1 and the second region A2 of the display panel 10 can be prevented or reduced. For this purpose, the first support member 31 and the second support member 32 can be rigid enough to prevent bending.

[0045] When in a direction perpendicular to the front surface of the first region A1 of the display panel 10 (e.g., Figure 2 When viewed along the z-axis, the first support member 31 supporting the first region A1 of the display panel 10 may mean that the first support member 31 and the first region A1 of the display panel 10 overlap with each other. Although Figure 2 The diagram shows that the area of ​​the surface of the first support member 31 in the direction toward the display panel 10 matches the area of ​​the first region A1 of the display panel 10, but the embodiments according to this disclosure are not limited thereto. For example, even when the area of ​​the surface of the first support member 31 in the direction toward the display panel 10 is smaller than the area of ​​the first region A1 of the display panel 10, the first support member 31 is sufficient to fully support the first region A1 of the display panel 10.

[0046] Similarly, in the direction perpendicular to the front surface of the second region A2 of the display panel 10 (e.g., Figure 2 When viewed along the z-axis, the second support 32 supporting the second region A2 of the display panel 10 may mean that the second support 32 and the second region A2 of the display panel 10 overlap with each other. Although Figure 2 The area of ​​the surface of the second support member 32 in the direction toward the display panel 10 is shown to match the area of ​​the second region A2 of the display panel 10, but this disclosure is not limited thereto. For example, even when the area of ​​the surface of the second support member 32 in the direction toward the display panel 10 is smaller than the area of ​​the second region A2 of the display panel 10, the second support member 32 is sufficient to fully support the second region A2 of the display panel 10.

[0047] The connection portion 33 connecting the first support member 31 to the second support member 32 may at least correspond to the curved area BA of the display panel 10. The connection portion 33 corresponding to the curved area BA of the display panel 10 may mean that, as Figure 2 and Figure 3 As shown, when the display panel 10 is in a non-bent state, when in a direction perpendicular or orthogonal to the front surface of the curved area BA of the display panel 10 (e.g., Figure 2 and Figure 3 When viewed along the z-axis, the connecting part 33 overlaps with the curved area BA of the display panel 10. Although Figure 2 and Figure 3 The diagram shows that the area of ​​the surface of the connecting portion 33 in the direction toward the display panel 10 matches the area of ​​the curved region BA of the display panel 10; however, the embodiments according to this disclosure are not limited thereto. For example, the area of ​​the surface of the connecting portion 33 in the direction toward the display panel 10 may be larger than the area of ​​the curved region BA of the display panel 10.

[0048] To enable the display device to be flexible, when the display panel 10 bends in the bending region BA, the connecting portion 33 bends along with the bending region BA of the display panel 10. For this purpose, the connecting portion 33 has a thickness smaller than that of the first support member 31 or the second support member 32. This is because bending is easier in the relevant portion as the thickness decreases. The physical properties of the connecting portion 33 may differ from those of the first support member 31 or the second support member 32. For example, the total stiffness of the connecting portion 33 may be less than the total stiffness of the first support member 31 or the second support member 32. In other words, the connecting portion 33 may have flexible characteristics.

[0049] like Figure 3 As shown, the magnetic field generating unit 40 is located on one side of the support member 30, while the display panel 10 is located on the other side of the support member 30. The magnetic field generating unit 40 can be located in the direction from the first support member 31 to the second support member 32 (in... Figure 2 and Figure 3 A magnetic field is generated in the +x direction (under certain conditions). The magnetic field generating unit 40 may include a permanent magnet or an electromagnet.

[0050] The magnetic field generating unit 40 can be positioned such that the connecting portion 33 of the support member 30 is located between the magnetic field generating unit 40 and the display panel 10. Accordingly, as Figure 2 and Figure 3 As shown, when the display panel 10 is in a non-bent state, when viewed in a direction perpendicular or orthogonal to the front surface (+z-axis direction) relative to the bending region BA (z-axis direction), the magnetic field generated by the magnetic field generating unit 40 can pass between the first support member 31 and the second support member 32.

[0051] The magnetic field generating unit 40 may include a first generating unit 41 and a second generating unit 42. Compared to the second generating unit 42, the first generating unit 41 may be positioned relatively closer to the first support member 31, and compared to the first generating unit 41, the second generating unit 42 may be positioned relatively closer to the second support member 32. Accordingly, the first generating unit 41 and the second generating unit 42 may define a space between the first generating unit 41 and the second generating unit 42 for the stylus 100 (see [link to stylus]). Figure 1 Insert the stylus into the stylus insertion space.

[0052] The first generating section 41 and the second generating section 42 may include permanent magnets or electromagnets. For example, the first generating section 41 may include an electromagnet with its portion facing the second generating section 42 having an N pole, and the second generating section 42 may include an electromagnet with its portion facing the first generating section 41 having an S pole. Accordingly, a magnetic field in the direction from the first support member 31 to the second support member 32 may be generated between the first generating section 41 and the second generating section 42.

[0053] For reference only. Figure 2 and Figure 3 This is a cross-sectional view. Accordingly, the first generating portion 41 and the second generating portion 42 may each have a shape that extends in the direction (y-axis direction) in which the curved region BA extends. Alternatively, the display device may include a pair of first generating portions 41 and second generating portions 42. In this case, the pair of first generating portions 41 and second generating portions 42 may be positioned to correspond to the connecting portion 33, and these pairs may be arranged at regular intervals in the direction (y-axis direction) in which the curved region BA extends.

[0054] Figure 4 yes Figure 1 A schematic diagram illustrating the operating principle of a display device. (e.g.) Figure 4 As shown, the magnetic field B (in the +x axis direction) is formed by a magnetic field generating section 40 including a first generating section 41 and a second generating section 42. In this case, when the current C flows in a direction perpendicular to the direction of the magnetic field B (-y direction), according to Fleming's left-hand law, a force F in a direction perpendicular to both the direction of the magnetic field B (+x direction) and the direction of the current C flow (-y direction) (+z direction) is applied to the conductor in which the current C flows.

[0055] Similarly, when a magnetic field B is generated between the first generating part 41 and the second generating part 42 in the direction from the first support member 31 to the second support member 32 (+x direction), and when the extension direction (y-axis direction) of the stylus 100 located between the first generating part 41 and the second generating part 42 is perpendicular to the direction (+x direction) of the magnetic field B, and the current C also flows in the stylus 100 in the direction (-y direction) perpendicular to the direction (+x direction) of the magnetic field B, a force F is applied to the stylus 100 in the direction toward the curved area BA of the display panel 10.

[0056] As described above, the display device according to some embodiments has a foldable feature that bends in the bending region BA. Accordingly, during manufacturing or during use after manufacturing, wrinkles may form in the bending region BA of the display panel 10 even when the first region A1 and the second region A2 of the display panel 10 are located on substantially the same plane (e.g., the xy plane). In other words, even when the first region A1 and the second region A2 of the display panel 10 are located on substantially the same plane (e.g., the xy plane), for example, as... Figure 2 As shown, part of the display surface of the upper surface of the display panel 10 in the outward direction (+z direction) may have a recessed shape in the curved region BA (in the -z direction), and the user can perceive this recessed shape as a wrinkle. The wrinkle can be perceived by the user when the display device is not folded.

[0057] However, in some embodiments of the display device, when the display device is not folded, when a magnetic field B is generated between the first generating part 41 and the second generating part 42 in the direction from the first support member 31 to the second support member 432 (+x direction), and a current C flows in the stylus 100 located between the first generating part 41 and the second generating part 42 in the direction perpendicular to the direction of the magnetic field B (+x direction) (-y direction), a force F in the direction toward the curved region BA of the display panel 10 can be applied to the stylus 100. Accordingly, the stylus 100 pushes the connecting part 33 in the direction toward the display panel 10 (+z direction), and the connecting part 33 pushes the curved region BA of the display panel 10 in the direction toward the front side of the display panel 10 (+z direction), which can remove or reduce wrinkles formed in the curved region BA of the display panel 10, or reduce the depth of the wrinkles.

[0058] like Figures 1 to 3As shown, the magnetic field generating section 40, including the first generating section 41 and the second generating section 42, can be positioned such that the connecting section 33 is located between the magnetic field generating section 40 and the display panel 10. In this state, as described above, the first generating section 41 can be positioned relatively closer to the first support member 31 compared to the second generating section 42, and the second generating section 42 can be positioned relatively closer to the second support member 32 compared to the first generating section 41. Accordingly, the first generating section 41 and the second generating section 42 can define a space between the first generating section 41 and the second generating section 42 for the stylus 100 (see [link to documentation]). Figure 1 Insert the stylus into the stylus insertion space.

[0059] Furthermore, the first generating part 41 can be connected to the first support member 31, and the second generating part 42 can be connected to the second support member 32. The connection of the first generating part 41 to the first support member 31 means that the first generating part 41 can be fixed to the first support member 31. Similarly, the connection of the second generating part 42 to the second support member 32 means that the second generating part 42 can be fixed to the second support member 32.

[0060] In order for the display device to bend and unfold in the bending region BA, the total stiffness of the connecting portion 33 corresponding to the bending region BA can be less than the total stiffness of the first support member 31 or the total stiffness of the second support member 32. In other words, the connecting portion 33 can have a flexible feature. Accordingly, it may not be easy to fix the first generating portion 41 and the second generating portion 42 to the connecting portion 33. Therefore, since the first generating portion 41 is connected to the first support member 31, which has a relatively higher stiffness than the connecting portion 33, and the second generating portion 42 is connected to the second support member 32, which has a relatively higher stiffness than the connecting portion 33, the durability of the constituent elements of the display device can be improved.

[0061] Figure 5 It will be Figure 1 A schematic concept diagram of the stylus 100 used in a display device. (See attached image.) Figure 5 As shown, the stylus 100 may include a tip 110 and a body 120. The tip 110 can apply signals to the display device by approaching or contacting the display surface of the display device, and the body 120 is connected to the tip 110. A battery 121 and wiring portions 124 and 125 connected to the battery 121 are located in the body 120. A drive circuit portion 123 for controlling the operation of the stylus 100 may be located in the body 120, and various other necessary components may be included in the body 120.

[0062] Wiring sections 124 and 125 may have a structure in which conductors such as copper or aluminum are surrounded by an insulator such as resin, and as... Figure 5As shown, wiring portions 124 and 125 may include a first wiring portion 124 and a second wiring portion 125. The first wiring portion 124 has a shape extending in a direction (+y direction) from the portion of the body 120 opposite to the tip 110 toward the tip 110, and the second wiring portion 125 has a shape extending in a direction (-y direction) from the portion of the body 120 near the tip 110 toward the portion of the body 120 opposite to the tip 110.

[0063] Current flows through battery 121 in wiring sections 124 and 125. Figure 5 In the first wiring section 124, the current (+) i flows in the direction (+y direction) from the portion of the body 120 opposite to the tip 110 toward the tip 110, and in the second wiring section 125, the current (-) i flows in the direction (-y direction) from the portion of the body 120 near the tip 110 toward the portion of the body 120 opposite to the tip 110.

[0064] As described above, in a display device according to some embodiments, when the display device is in an unfolded state, a magnetic field is generated between the first generating section 41 and the second generating section 42 in the direction (+x direction) from the first support member 31 to the second support member 32. Accordingly, in this state, when a stylus 100 having a second wiring section 125 in which current (-)i flows from the portion of the body 120 near the tip 110 toward the portion of the body 120 opposite to the tip 110 in the direction (-y direction) is located in the space between the first generating section 41 and the second generating section 42, a force is applied to the second wiring section 125 in the direction toward the curved region BA of the display panel 10. Since the second wiring section 125 is fixed in the body 120 of the stylus 100, a force is applied to the stylus 100 in the direction toward the curved region BA of the display panel 10. Accordingly, since the stylus 100 pushes the connecting portion 33 in the direction toward the display panel 10 (+z direction), and therefore the connecting portion 33 pushes the curved area BA of the display panel 10 in the direction toward the front side of the display panel 10 (+z direction), the wrinkles formed in the curved area BA of the display panel 10 can be removed, or the depth of the wrinkles can be reduced.

[0065] like Figure 5As shown, the current (+)i flows in the first wiring portion 124 in the direction (+y direction) from the portion of the body 120 opposite to the tip 110 toward the tip 110. Accordingly, when the stylus 100 is located between the first generating portion 41 and the second generating portion 42, a force can be applied to the first wiring portion 124 by a magnetic field from the first generating portion 41 toward the second generating portion 42. In this case, the direction of the force applied to the first wiring portion 124 may be opposite to the direction of the force applied to the second wiring portion 125. This is because the direction of the current (+)i flowing in the first wiring portion 124 is opposite to the direction of the current (-)i flowing in the second wiring portion 125.

[0066] Accordingly, in order to prevent force from being applied to the first wiring section 124, it is necessary to shield the first wiring section 124 from the magnetic field in the direction from the first generating section 41 to the second generating section 42. For this purpose, the stylus 100 may be provided with a magnetic field shielding section 127 for shielding most of the first wiring section 124.

[0067] For example, the magnetic field shielding portion 127 may have a cylindrical shape in the direction (y-axis direction) in which the body 120 of the stylus 100 extends, and most of the first wiring portion 124 may be located in the magnetic field shielding portion 127. Figure 5 As shown, the magnetic field shielding portion 127 has two holes so that the connecting wiring portion connecting the second wiring portion 125 and the first wiring portion 124 can pass through the holes. The first wiring portion 124, the second wiring portion 125, and the connecting wiring portion can be integrally formed into a single body. The shape of the magnetic field shielding portion 127 is not limited to a cylindrical shape, and the shape of the magnetic field shielding portion 127 can be changed in various ways to a cuboid or the like. The magnetic field shielding portion 127 may include a material capable of shielding magnetic fields, such as metals such as copper and / or aluminum.

[0068] Figure 6 This is a schematic cross-sectional view of a portion of a display device according to some embodiments. For example... Figure 6 As shown, each of the first support member 31, the second support member 32, and the connecting portion 33 provided in the display device according to some embodiments may have a multi-layer structure.

[0069] The first support member 31 may include a first support member 1-1 and a second support member 1-2. The first support member 1-1 may be positioned relatively closer to the display panel 10 than the first support member 1-2. The first support member 1-1 may include adhesive layers 311a, 11th layer 312, 12th layer 313, 13th layer 314, 14th layer 315, 15th layer 316, and adhesive layer 311b, which are sequentially stacked in a direction from the portion adjacent to the display panel 10 toward the portion away from the display panel 10. The first support member 1-2 may include a 16th layer 317, adhesive layer 311c, and 17th layer 319, which are sequentially stacked in a direction from the portion adjacent to the first support member 1-1 toward the portion away from the first support member 1-1.

[0070] The adhesive layer 311a attaches the first support member 31 to the display panel 10. The eleventh layer 312 prevents or reduces the visibility of the components located behind the display panel 10 to a user viewing the display panel 10 from the front. For this purpose, the eleventh layer 312 may include a black pigment containing chromium or the like. Furthermore, the eleventh layer 312 may include a polymer resin. For example, the eleventh layer 312 may include a black pigment and polyethylene terephthalate.

[0071] Layer 12 313 may be a pressure-sensitive adhesive (PSA), and layer 13 314, serving as a padding layer, may be attached to layer 11 312. Layer 14 315, serving as a PSA, may also have layer 15 316, serving as a base layer, attached to layer 13 314, serving as a padding layer. Layer 15 316, serving as a base layer, may comprise a polymer resin, such as polyimide. Adhesive layer 311b may attach the first-2 support members, as described below, to the first-1 support member.

[0072] The 16th layer 317 may be attached to the 1-1 support member via an adhesive layer 311b included in the 1-1 support member. The 16th layer 317, serving as a heat dissipation layer, may include, for example, graphite. The 16th layer 317, serving as a heat dissipation layer, can dissipate heat generated during image realization in the display panel 10 to the outside. The 17th layer 319 may be attached to the 16th layer 317, serving as a heat dissipation layer, via an adhesive layer 311c. The 17th layer 319 can prevent or reduce the application of electromagnetic waves to the display panel 10, thereby improving the quality of the image realized in the display panel 10. The 17th layer 319, serving as a shielding layer, may be a metal layer and may include, for example, copper.

[0073] Compared to the first-second support member including the 16th layer 317, adhesive layer 311c, and 17th layer 319, the first-first support member including adhesive layer 311a, 11th layer 312, 12th layer 313, 13th layer 314, 14th layer 315, 15th layer 316, and adhesive layer 311b can be positioned relatively closer to the display panel 10.

[0074] The second support member 32 may have a similar configuration to the first support member 31. In other words, the second support member 32 may include a second-1 support member and a second-2 support member. Compared to the second-2 support member, the second-1 support member may be positioned relatively closer to the display panel 10. The second-1 support member may include adhesive layers 321a, 21st layer 322, 22nd layer 323, 23rd layer 324, 24th layer 325, 25th layer 326, and adhesive layer 321b, which are sequentially stacked in a direction from the portion adjacent to the display panel 10 toward the portion away from the display panel 10. The second-2 support member may include a second-6th layer 327, adhesive layer 321c, and second-7th layer 329, which are sequentially stacked in a direction from the portion adjacent to the second-1 support member toward the portion away from the second-1 support member.

[0075] The adhesive layer 321a attaches the second support member 32 to the display panel 10. The 21st layer 322 prevents or reduces the visibility of components located behind the display panel 10 to a user viewing the display panel 10 from the front. For this purpose, the 21st layer 322 may include a black pigment containing chromium or the like. Furthermore, the 21st layer 322 may include a polymer resin. For example, the 21st layer 322 may include a black pigment and polyethylene terephthalate.

[0076] Layer 22 323 may be PSA, and layer 23 324, serving as a padding layer, may be attached to layer 21 322. Layer 24 325 may also be PSA, and layer 25 326, serving as a base layer, may be attached to layer 23 324, serving as a padding layer. Layer 25 326, serving as a base layer, may comprise a polymer resin, such as polyimide. Adhesive layer 321b may attach support member 2-2, described later, to support member 2-1.

[0077] The 26th layer 327 may be attached to the 2-1 support member via an adhesive layer 321b included in the 2-1 support member. The 26th layer 327, serving as a heat dissipation layer, may include, for example, graphite. The 26th layer 327, serving as a heat dissipation layer, can dissipate heat generated during image realization in the display panel 10 to the outside. The 27th layer 329 may be attached to the 26th layer 327, serving as a heat dissipation layer, via an adhesive layer 321c. The 27th layer 329 can prevent or reduce the application of electromagnetic waves to the display panel 10, thereby improving the quality of the image realized in the display panel 10. The 27th layer 329, serving as a shielding layer, may be a metal layer and may include, for example, copper.

[0078] Compared to the second-2 support member, which includes the 26th layer 327, the adhesive layer 321c, and the 27th layer 329, the second-1 support member, which includes the adhesive layer 321a, the 21st layer 322, the 22nd layer 323, the 23rd layer 324, the 24th layer 325, the 25th layer 326, and the adhesive layer 321b, can be positioned relatively closer to the display panel 10.

[0079] The connecting portion 33 may include a first connecting portion and a second connecting portion. Compared to the second connecting portion, the first connecting portion may be positioned relatively closer to the display panel 10. The first connecting portion may include adhesive layers 331a, 31st layer 332, 32nd layer 333, 33rd layer 334, 34th layer 335, 35th layer 336, and adhesive layer 331b, which are sequentially stacked in a direction from the portion adjacent to the display panel 10 toward the portion away from the display panel 10. The second connecting portion may include an elastic layer 338.

[0080] The adhesive layer 331a attaches the connecting portion 33 to the display panel 10. The 31st layer 332 prevents or reduces the visibility of components located behind the display panel 10 to a user viewing the display panel 10 from the front. For this purpose, the 31st layer 332 may include a black pigment containing chromium or the like. Furthermore, the 31st layer 332 may include a polymer resin. For example, the 31st layer 332 may include a black pigment and polyethylene terephthalate.

[0081] Layer 32, 333, may be PSA, and layer 33, 334, serving as a padding layer, may be attached to layer 31, 332. Layer 34, 335, may also be PSA, and layer 35, 336, serving as a base layer, may be attached to layer 33, 334, serving as a padding layer. Layer 35, 336, serving as a base layer, may comprise a polymer resin, such as polyimide. Adhesive layer 331b may attach the second connecting portion, as described below, to the first connecting portion.

[0082] Compared to the second connecting portion including the elastic layer 338, the first connecting portion including the adhesive layer 331a, the 31st layer 332, the 32nd layer 333, the 33rd layer 334, the 34th layer 335, the 35th layer 336 and the adhesive layer 331b can be positioned relatively closer to the display panel 10.

[0083] The elastic layer 338 included in the second connecting portion can be attached to the first connecting portion via the adhesive layer 331b included in the first connecting portion. The elastic layer 338 can directly contact the stylus 100, which is subjected to a force in the direction toward the display panel 10 by a magnetic field as described above. The elastic layer 338 may have a lower hardness than the layer included in the first-2 support members. The elastic layer 338 may have a lower hardness than the layer included in the second-2 support members.

[0084] As described above, in the display device according to some embodiments, when the display device is in the unfolded state, a magnetic field is generated between the first generating part 41 and the second generating part 42 in the direction from the first support member 31 to the second support member 32 (+x direction), and current flows in the stylus 100 located between the first generating part 41 and the second generating part 42 in a direction perpendicular to the direction of the magnetic field (+x direction) (-y direction). Therefore, a force can be applied to the stylus 100 in the direction toward the curved region BA of the display panel 10. Accordingly, since the stylus 100 pushes the connecting part 33 in the direction toward the display panel 10 (+z direction), and therefore the connecting part 33 pushes the curved region BA of the display panel 10 in the direction toward the front side of the display panel 10 (+z direction), wrinkles formed in the curved region BA of the display panel 10 can be removed, or the depth of the wrinkles can be reduced.

[0085] In this state, the wrinkles in the display panel 10 need to be uniformly removed by the force applied to the display panel 10 by the stylus 100. When the force applied to the display panel 10 by the stylus 100 is concentrated on a specific portion of the display panel 10, it may result in undesirable deformation of the display surface of the display panel 10. In a display device according to some embodiments, as described above, the second connecting portion includes an elastic layer 338 with low hardness. The elastic layer 338 uniformly distributes the force applied from the stylus 100 to transmit it to the curved region BA of the display panel 10. Accordingly, wrinkles in the curved region BA of the display panel 10 can be effectively removed or reduced.

[0086] Therefore, the elastic layer 338 has a lower hardness than the layer included in the first-second support member. Furthermore, the thickness of the second connecting portion including the elastic layer 338 can be less than the thickness of the first-second support member or the thickness of the second-second support member. Accordingly, space for the stylus 100 can be ensured from the elastic layer 338 in a direction opposite to the direction from the elastic layer 338 toward the display panel 10 (-z direction).

[0087] As described above, the layer structure of the first-1 support member, the layer structure of the first connecting portion, and the layer structure of the second-1 support member can be the same. Accordingly, the first-1 support member, the first connecting portion, and the second-1 support member can be integrally formed into a single main body. For example, the adhesive layer 311a of the first-1 support member, the adhesive layer 331a of the first connecting portion, and the adhesive layer 321a of the second-1 support member can be integrally formed into a single main body; the 11th layer 312 of the first-1 support member, the 31st layer 332 of the first connecting portion, and the 21st layer 322 of the second-1 support member can be integrally formed into a single main body; the 12th layer 313 of the first-1 support member, the 32nd layer 333 of the first connecting portion, and the 22nd layer 323 of the second-1 support member can be integrally formed into a single main body; the 13th layer 314 of the first-1 support member, the 33rd layer 33... The 23rd layer 324 of the 4th and 2nd-1st supports can be integrally formed into a single body; the 14th layer 315 of the 1st-1st support, the 34th layer 335 of the first connecting portion and the 24th layer 325 of the 2nd-1st support can be integrally formed into a single body; the 15th layer 316 of the 1st-1st support, the 35th layer 336 of the first connecting portion and the 25th layer 326 of the 2nd-1st support can be integrally formed into a single body; and the adhesive layer 311b of the 1st-1st support, the adhesive layer 331b of the first connecting portion and the adhesive layer 321b of the 2nd-1st support can be integrally formed into a single body.

[0088] The first-second support member and the second-second support member are separate from each other. However, as mentioned above, the layer structure of the first-second support member can be the same as that of the second-second support member.

[0089] As described above, when the angle between the upper surface (+z direction) of the first region A1 of the display panel 10 and the upper surface (+z direction) of the second region A2 of the display panel 10 is greater than or equal to an angle (e.g., a set angle, a preset angle, or a predetermined angle), the magnetic field generating unit 40 can generate a magnetic field. For example, the angle (e.g., a set angle, a preset angle, or a predetermined angle) can be 170°. ° When the display panel 10 is unfolded, it is necessary to remove the wrinkles in the curved area BA. Accordingly, when the angle between the upper surface of the first area A1 of the display panel 10 and the upper surface of the second area A2 of the display panel 10 is less than an angle (e.g., a set angle, a preset angle, or a predetermined angle), the magnetic field generating unit 40 can be in a closed state. In this state, it is not necessary to remove the wrinkles in the curved area BA of the display panel 10.

[0090] When the upper surfaces of the first region A1 and the second region A2 of the display panel 10 are located on the same plane (e.g., the xy plane), the magnetic field generating unit 40 can generate a magnetic field. When the display panel 10 is fully unfolded, it is necessary to remove the wrinkles in the curved region BA. Accordingly, when the angle between the upper surfaces of the first region A1 and the second region A2 of the display panel 10 is less than 180 degrees... ° At this time, the magnetic field generating unit 40 can be in the off state.

[0091] When the angle between the upper surface (+z direction) of the first region A1 of the display panel 10 and the upper surface (+z direction) of the second region A2 of the display panel 10 is greater than or equal to an angle (e.g., a set angle, a preset angle, or a predetermined angle), if the stylus 100 is not positioned in the direction opposite to the direction from the connecting portion 33 toward the display panel 10 (-z direction), the magnetic field generating unit 40 may not generate a magnetic field. Even when the magnetic field generating unit 40 generates a magnetic field, if the stylus 100 is not present, the wrinkles on the display panel 10 may not be removed.

[0092] Accordingly, when the angle between the upper surface (+z direction) of the first region A1 of the display panel 10 and the upper surface (+z direction) of the second region A2 of the display panel 10 is greater than or equal to an angle (e.g., a set angle, a preset angle, or a predetermined angle), and the stylus 100 is positioned in the direction opposite to the direction from the connecting portion 33 toward the display panel 10 (-z direction), the magnetic field generating unit 40 can generate a magnetic field. In other words, when the angle between the upper surface of the first region A1 of the display panel 10 and the upper surface of the second region A2 of the display panel 10 is less than an angle (e.g., a set angle, a preset angle, or a predetermined angle), or when the stylus 100 is not positioned in the direction opposite to the direction from the connecting portion 33 toward the display panel 10 (-z direction), the magnetic field generating unit 40 is in a closed state.

[0093] When the upper surfaces of the first region A1 and the second region A2 of the display panel 10 are located on the same plane (e.g., the xy plane), and the stylus 100 is positioned in a direction opposite to the direction from the connecting portion 33 toward the display panel 10 (i.e., the stylus 100 is positioned such that the connecting portion 33 is between the stylus 100 and the display panel 10), the magnetic field generating unit 40 can generate a magnetic field. In other words, when the angle between the upper surface of the first region A1 and the upper surface of the second region A2 of the display panel 10 is less than 180 degrees... °If the stylus 100 is not positioned in the opposite direction from the connection portion 33 toward the display panel 10, the magnetic field generating portion 40 may be in the off state.

[0094] This disclosure is not limited thereto. For example, even when the angle between the upper surface (+z direction) of the first region A1 of the display panel 10 and the upper surface (+z direction) of the second region A2 of the display panel 10 is greater than or equal to an angle (e.g., a set angle, a preset angle, or a predetermined angle) or is 180 degrees. ° Furthermore, when the stylus 100 is positioned in the opposite direction (-z direction) from the connecting portion 33 toward the display panel 10 (i.e., the stylus 100 is positioned such that the connecting portion 33 is between the stylus 100 and the display panel 10), if the display panel 10 is in a closed state, the magnetic field generating portion 40 may not generate a magnetic field.

[0095] Figure 7 This is a schematic perspective view of a display device 1 according to some embodiments. Figure 7 It is shown that there are also surrounding features such as Figure 1 The housing includes the first support member 31, the second support member 32, and the connecting portion 33. Batteries and the like can be located within the housing. Furthermore, depending on the type of display device 1, various electronic devices such as cameras can be arranged within the housing. The housing may have a hinge at a portion corresponding to the curved area BA of the display panel 10.

[0096] like Figure 7 As shown, the display device 1 may include a stylus insertion space 3 or a stylus insertion hole. When the display panel 10 is in a flat state, the stylus insertion space 3 has a shape extending in a direction (y-axis direction) intersecting an imaginary first straight line (parallel to the x-axis) connecting the first region A1 and the second region A2 of the display panel 10. The stylus 100 described above can be inserted into the stylus insertion space 3.

[0097] The amount of force applied by the stylus 100 to the curved region BA of the display panel 10 is proportional to the strength of the magnetic field generated by the magnetic field generating unit 40. Accordingly, during the manufacturing of the display device, when the display panel 10 is unfolded, the depth of wrinkles in the curved region BA of the display panel 10 is measured, and the strength of the magnetic field generated by the magnetic field generating unit 40 can be set according to the measured depth. Accordingly, the optimal strength of the magnetic field for removing wrinkles or reducing the depth of wrinkles when the display panel 10 is unfolded can be generated by the magnetic field generating unit 40. It can be said that a method for manufacturing a display device that includes setting the strength of the magnetic field generated by the magnetic field generating unit 40 falls within the scope of this disclosure.

[0098] According to some embodiments of the present disclosure as described above, a display device comprising a display surface with improved flatness can be realized. The scope of the present disclosure is not limited to the effects described above.

[0099] It should be understood that the embodiments described herein are to be considered in a descriptive sense only and are not intended to be limiting. The description of features or aspects within each embodiment should generally be regarded as other similar features or aspects that may be used in other embodiments. Although one or more embodiments have been described with reference to figures, those skilled in the art will understand that various changes in form and detail may be made therein without departing from the spirit and scope defined in the appended claims and their equivalents.

Claims

1. A display device, comprising: The display panel has a first region, a second region, and a curved region between the first region and the second region, the curved region being flexible; A support member, located behind the display panel, includes a first support member supporting the first area, a second support member supporting the second area, and a connecting portion connecting the first support member and the second support member and having a thickness smaller than that of the first support member or the second support member. as well as A magnetic field generating section is located behind the support member, and the magnetic field generating section overlaps with the curved region. The magnetic field generated by the magnetic field generating unit interacts with the current in the component located in the magnetic field, causing the component to push the connecting part toward the display panel.

2. The display device according to claim 1, wherein, The connecting part is located between the display panel and the magnetic field generating part.

3. The display device according to claim 1, wherein, The magnetic field generating unit includes a first generating unit and a second generating unit that are spaced apart from each other.

4. The display device according to claim 3, wherein, The first generating part is closer to the first support member than the second generating part, the second generating part is closer to the second support member than the first generating part, and the first generating part and the second generating part define a stylus insertion space between the first generating part and the second generating part.

5. The display device according to claim 4, wherein, The first generating part is connected to the first support member, and the second generating part is connected to the second support member.

6. The display device according to claim 4, wherein, The stylus insertion space has a shape that extends in a direction intersecting an imaginary first straight line connecting the first region and the second region.

7. The display device according to claim 1, wherein, The connecting portion includes a first connecting portion and a second connecting portion, wherein the first connecting portion is closer to the display panel than the second connecting portion, and the second connecting portion includes an elastic layer.

8. The display device according to claim 1, wherein, The first support member includes a first support member and a second support member, wherein the first support member is closer to the display panel than the second support member. The second support member includes a 2-1 support member and a 2-2 support member, wherein the 2-1 support member is closer to the display panel than the 2-2 support member. The connecting portion includes a first connecting portion and a second connecting portion, wherein the first connecting portion is closer to the display panel than the second connecting portion.

9. The display device according to claim 8, wherein, The first-1 support member, the first connecting part, and the second-1 support member are collectively formed into a single main body.

10. The display device according to claim 9, wherein, The first-2 support member has the same layer structure as the second-2 support member.

11. The display device according to claim 10, wherein, The first-2 support member includes: a heat dissipation layer in the direction toward the first-1 support member and a shielding layer positioned such that the heat dissipation layer is between the display panel and the shielding layer.

12. The display device according to claim 9, wherein, The second connecting portion includes a layer having a lower hardness than the layer included in the first-second support members.

13. The display device according to claim 8, wherein, The thickness of the second connecting part is less than the thickness of the first-2 support member or the thickness of the second-2 support member.

14. The display device according to claim 1, wherein, The magnetic field generating unit is configured to generate a magnetic field in response to an angle between the upper surface of the first region and the upper surface of the second region being greater than or equal to a preset angle.

15. The display device according to claim 1, wherein, The magnetic field generating unit is configured to be in a closed state in response to the angle between the upper surface of the first region and the upper surface of the second region being less than a preset angle.

16. The display device according to claim 1, wherein, The magnetic field generating unit is configured to generate a magnetic field in response to the fact that the upper surfaces of the first region and the second region are located on the same plane.

17. The display device according to claim 1, wherein, The magnetic field generating unit is configured to be in a closed state in response to the angle between the upper surface of the first region and the upper surface of the second region being less than 180°.

18. The display device according to claim 1, wherein, The magnetic field generating part is configured to generate a magnetic field in response to an angle between the upper surface of the first region and the upper surface of the second region being greater than or equal to a preset angle and the stylus being positioned such that the connecting part is located between the display panel and the stylus.

19. The display device according to claim 1, wherein, The magnetic field generating unit is configured to be in a closed state in response to the angle between the upper surface of the first region and the upper surface of the second region being less than a preset angle or the stylus not being positioned in a direction opposite to the direction from the connecting part toward the display panel.

20. The display device according to claim 1, wherein, The magnetic field generating part is configured to generate a magnetic field in response to the upper surface of the first region and the upper surface of the second region being on the same plane and the stylus being positioned such that the connecting part is located between the display panel and the stylus.

21. The display device according to claim 1, wherein, The magnetic field generating unit is configured to be in a closed state in response to an angle between the upper surface of the first region and the upper surface of the second region being less than 180° or the stylus not being positioned in a direction opposite to the direction from the connecting part toward the display panel.

Images