Display device

Abstract

A display device according to an embodiment includes: a flat area and a sliding area; a display panel disposed in the flat area and the sliding area; a first adhesive layer disposed on the display panel in the flat area; a cover member disposed on the display panel in the sliding area; a first plate disposed on the cover member; and a second plate disposed on the first adhesive layer. The first adhesive layer and the cover member are spaced apart from each other, and a region between the first adhesive layer and the cover member is covered by the first plate.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2023-0031324 filed on March 9, 2023, in the Korean Intellectual Property Office (KIPO), the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to a display device in which a sliding portion and a planar portion have different laminated structures. Background Art

[0004] With the recent development of display-related technologies, display devices that can change shape during the use phase (such as folding, curling into a roll shape, or stretching like a rubber band) are being studied and developed. Since these displays can be converted into various forms, they can meet the demand for large displays during the use phase and the demand for small-sized displays for portability.

[0005] The user can slide and unfold the display panel as needed. The slidable display panel area requires low modulus, and the non-slidable display panel area requires high impact resistance, and therefore the physical properties required for each area are different. Utility Model Content

[0006] Embodiments provide a display device having impact resistance and flexibility by implementing different physical characteristics for each region.

[0007] A display device according to an embodiment may include: a flat region and a sliding region; a display panel disposed in the flat region and the sliding region; a first adhesive layer disposed on the display panel in the flat region; a cover member disposed on the display panel in the sliding region; a first plate disposed on the cover member; and a second plate disposed on the first adhesive layer. The first adhesive layer and the cover member may be spaced apart from each other, and a region between the first adhesive layer and the cover member may be covered by the first plate.

[0008] In a thickness direction of the display panel, a thickness of the first adhesive layer may be smaller than a thickness of the cover member.

[0009] The first adhesive layer may have a thickness in the range of about 10 μm to about 30 μm in a thickness direction of the display panel.

[0010] The cover member may have a thickness in a range of about 50 μm to about 400 μm in a thickness direction of the display panel.

[0011] A separation distance between the first adhesive layer and the cover member may be in a range of about 0.2 mm to about 0.5 mm in a thickness direction of the display panel.

[0012] The first plate may extend to the flat region and may be disposed in the flat region, and the first plate and the second plate may overlap in the thickness direction of the display panel in the flat region.

[0013] The display device may further include a second adhesive layer disposed between the first plate and the second plate overlapped with each other in the thickness direction.

[0014] In a thickness direction of the display panel, a sum of a thickness of the first adhesive layer and a thickness of the second plate may be smaller than a thickness of the cover member.

[0015] The display device may further include a plurality of sliding members provided on one side of the first plate.

[0016] The first plate may include a plurality of slots.

[0017] The display device may further include a buffer layer disposed on one side of the second plate.

[0018] The second plate may include a first portion and a second portion having a thickness greater than that of the first portion in a thickness direction of the display panel.

[0019] The first plate may overlap the first portion of the second plate in a thickness direction.

[0020] The display device may further include a second adhesive layer disposed between the first portion of the second plate and the first plate.

[0021] A side surface of the second portion of the second plate may contact a side surface of the first plate.

[0022] The display device may further include a third adhesive layer disposed between a side surface of the second portion of the second plate and the first plate.

[0023] The display device may further include: a second cover member disposed on one side of the display panel and spaced apart from the cover member; and a third board disposed on one side of the second cover member and spaced apart from the first board.

[0024] The display device may further include: a fourth adhesive layer disposed on one side of the display panel and spaced apart from the cover member; and a third plate disposed on one side of the second adhesive layer and spaced apart from the first plate. The first plate may overlap the third plate in a thickness direction of the display panel.

[0025] According to an embodiment, a rollable display device may include: a flat area and a sliding area; a display panel arranged in the flat area and the sliding area; a first adhesive layer arranged on the display panel in the flat area; a covering member arranged on the display panel in the sliding area; a first plate arranged on the covering member; and a second plate arranged on the first adhesive layer, wherein the first adhesive layer and the covering member may be spaced apart from each other, an area between the first adhesive layer and the covering member may be covered by the first plate, and the covering member may include a polymer.

[0026] The rollable display device may further include a buffer layer disposed on one side of the second plate.

[0027] According to an embodiment, a display device having both impact resistance and flexibility may be provided by implementing different physical characteristics for each region. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic perspective view of a display device according to an embodiment.

[0029] Figure 2 yes Figure 1 Schematic cross-sectional view of a display device.

[0030] Figure 3 is a schematic cross-sectional view of a display device in a rolled state.

[0031] Figure 4 is a schematic cross-sectional view of a display device according to an embodiment.

[0032] Figure 5 is in a bent state according to an embodiment Figure 4 Schematic cross-sectional view of a display device.

[0033] Figure 6 is a schematic cross-sectional view of a display device according to another embodiment.

[0034] Figure 7 is a schematic cross-sectional view of a display device according to another embodiment.

[0035] Figure 8 is a schematic cross-sectional view of a display device according to another embodiment.

[0036] Fig. 9 is a schematic cross-sectional view of a display device according to another embodiment.

[0037] Fig.10 is a schematic cross-sectional view of a display device according to another embodiment. DETAILED DESCRIPTION

[0038] Hereinafter, various embodiments of the present disclosure will be described in detail with reference to the accompanying drawings, and thus ordinary technicians can easily practice them in the technical field to which the present disclosure belongs. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein.

[0039] In order to clearly explain the present disclosure, parts irrelevant to the description are omitted, and the same reference numerals are applied to the same or similar constituent elements throughout the specification.

[0040] In addition, since the size and thickness of each component shown in the drawings are arbitrarily shown for the convenience of explanation, the present disclosure is not necessarily limited to the drawings. In the drawings, the thickness of layers, films, panels, regions, etc. are exaggerated for clarity. In addition, in the drawings, the thickness of some layers and regions are exaggerated for the convenience of explanation.

[0041] When an element (such as a layer) is referred to as being "on," "connected to," or "coupled to" another element or layer, it may be directly on, connected to, or coupled to another element or layer, or there may be intervening elements or layers. However, when an element or layer is referred to as being "directly on," "directly connected to," or "directly coupled to" another element or layer, there are no intervening elements or layers. For this purpose, the term "connected" may refer to a physical connection, an electrical connection, and / or a fluid connection with or without intervening elements.

[0042] The terms used herein are used to describe the purpose of a particular embodiment and are not intended to be limiting. As used herein, the singular forms "one", "a kind of" and "the" are intended to also include plural forms unless the context clearly indicates otherwise. In addition, when used in this specification, the terms "comprise", "comprises", "includes" and / or "includes" specify the presence of the features, integral bodies, steps, operations, elements, parts and / or its groups, but do not exclude the presence or addition of one or more other features, integral bodies, steps, operations, elements, parts and / or its groups. It should also be noted that, as used herein, the terms "substantially", "about" and other similar terms are used as approximate terms and not as degree terms, and similarly, are used to explain the inherent deviations of the values ​​measured, calculated and / or provided that will be recognized by those of ordinary skill in the art.

[0043] Furthermore, throughout the specification, the phrase “on a plane” or “in a plan view” means observing a target portion from the top, and the phrase “on a section” or “in a cross-sectional view” means observing a section formed by vertically cutting the target portion from the side.

[0044] Unless otherwise defined or indicated herein, all terms (including technical and scientific terms) used have the same meaning as commonly understood by those skilled in the art to which the present disclosure belongs. It will also be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense unless explicitly defined in this specification.

[0045] Hereinafter, a display device according to an embodiment will be described in detail with reference to the accompanying drawings.

[0046] Figure 1 is a schematic perspective view of a display device according to an embodiment. Figure 1 , the display device according to the embodiment may be a rollable display device. Figure 1 , a display device according to an embodiment may include a roller 11 and a display panel 100 wound into a roll in the roller 11. Although not shown, a rod (not shown) may be provided inside the roller 11, and the display panel 100 may be wound around the rod as a central axis. For example, according to an embodiment, a user may loosen and unfold the display panel 100 wound around the roller 11 as needed to use the display panel 100. The display panel 100 may include a sliding member (not shown) at the bottom, and a rolling motion may occur while the sliding member (not shown) slides.

[0047] Figure 2 yes Figure 1 A schematic cross-sectional view of a display device. Figure 2 , the display device may include a display panel 100, a cover window 200 disposed on one side of the display panel 100, a cover member 300 disposed on the other side of the display panel 100, and a plate 400 disposed on the bottom side of the cover member 300. The plate 400 may include a plurality of grooves 450, and the sliding member 600 may be disposed on a surface of the plate 400. Figure 2 The display device may be divided into a flat area FA and a sliding area SA. The flat area FA may be a non-sliding portion, and the sliding area SA may be a sliding portion. The flat area FA may not include the sliding member 600, and the sliding area SA may include the sliding member 600.

[0048] Figure 3 is a schematic cross-sectional view of a display device in a rolled-up state. Figure 3 As shown in , the rolling motion can be performed while the sliding member 600 slides. Figure 3, the flat area FA and the sliding area SA are shown separately. The flat area FA and the sliding area SA may require different physical properties. For example, since the flat area FA is an uncurled portion, a low modulus may not be required. Since the flat area FA is an exposed portion that is not curled, high impact resistance may be required. However, the sliding area SA may be a curled portion of the display device and may require a low modulus. In the case of a high modulus, cracks may occur during the curling process or the laminated structure may peel off. Since the sliding area SA is not exposed as a normally curled portion, the impact resistance of the sliding area SA may be lower than that of the flat area FA. The display device may require different physical properties for the flat area FA and the sliding area SA. Therefore, according to this embodiment, the display device may include a laminated structure of a flat area FA and a sliding area SA having different properties.

[0049] Figure 4 is a schematic cross-sectional view of a display device according to an embodiment. Figure 4 , the display device according to the embodiment may be a rollable display device, and may include a flat area FA and a sliding area SA. The description of the flat area FA and the sliding area SA is the same as above. For example, the sliding area SA may be a sliding portion, and thus the display panel 100 may be bent, and the flat area FA may be a non-sliding portion, and the display panel 100 may not be bent.

[0050] refer to Figure 4 , a display panel 100 may be provided. The display panel 100 may include a plurality of transistors and light emitting elements connected to the transistors. A cover window 200 may be provided on one side of the display panel 100.

[0051] The display device may include a flat area FA and a sliding area SA. The cover member 300 may be disposed on one side of the display panel 100 in the sliding area SA. The cover member 300 may include an organic material. The cover member 300 may include a polymer material such as polyurethane or polyimide.

[0052] In the flat area FA, the first adhesive layer 310 may be disposed on one side of the display panel 100. For example, the first adhesive layer 310 may be disposed in the flat area FA, and the cover member 300 may be disposed in the sliding area SA. In the thickness direction of the display panel 100, the thickness of the cover member 300 may be greater than the thickness of the first adhesive layer 310. For example, the thickness D1 of the cover member 300 may be in the range of about 50 μm to about 400 μm. The thickness D2 of the first adhesive layer 310 may be in the range of about 10 μm to about 30 μm.

[0053] For example, since the cover member 300 including a polymer is disposed in the sliding area SA, the display device according to the embodiment may have low modulus and high flexibility in the sliding area SA. Since the flat area FA does not include the cover member 300, the overall thickness may be reduced.

[0054] refer to Figure 4 , the covering member 300 and the first adhesive layer 310 may be spaced apart from each other, and the separation distance H1 between the covering member 300 and the first adhesive layer 310 may be in the range of about 0.2 mm to about 0.5 mm. In the case where the separation distance H1 is less than 0.2 mm, it may be difficult to manage tolerances in the manufacturing process, and sufficient grooves may not be formed. In the case where the separation distance H1 is greater than 0.5 mm, the separation area may be visible from the outside.

[0055] refer to Figure 4 , the plate 400 may be disposed at the bottom of the cover member 300. The plate 400 may include a first plate 410 and a second plate 420 separated from each other. The first plate 410 may be disposed below the cover member 300. The second plate 420 may be disposed below the first adhesive layer 310 and may be attached to the display panel 100 through the first adhesive layer 310. For example, the first plate 410 may be disposed in the sliding area SA, and the second plate 420 may be disposed in the flat area FA. Figure 4 As shown in FIG. 1 , the first plate 410 may extend to the flat area FA and may overlap the second plate 420 in the thickness direction of the display panel 100. The third adhesive layer 510 may be disposed in the overlapping area of ​​the first plate 410 and the second plate 420, and thus the first plate 410 and the second plate 420 may be bonded to each other.

[0056] like Figure 4 As shown in , the separation area between the cover member 300 and the first adhesive layer 310 may be covered by the first plate 410 .

[0057] Therefore, the separation zone cannot be seen from the outside. Figure 4 , the sum of the thickness of the second plate 420 and the thickness of the first adhesive layer 310 may be equal to or less than the thickness of the cover member 300. In the case where the thickness is within this condition, the second plate 420 and the first plate 410 may be stably bonded.

[0058] A plurality of sliding members 600 may be provided on the first plate 410. A plurality of grooves 450 may be formed in the region of the first plate 410 between the sliding members 600. Since the grooves 450 are formed on the first plate 410, the first plate 410 may be easily bent. As described above, the sliding area SA including the first plate 410 may be bent as the sliding member 600 slides.

[0059] In an embodiment, the first plate 410 and the second plate 420 may include metal or carbon fiber reinforced plastic (CFRP). The first plate 410 and the second plate 420 may include titanium alloy, stainless steel, carbon fiber reinforced plastic, or a combination thereof. The first plate 410 and the second plate 420 may include different materials or the same material. For example, one of the first plate 410 and the second plate 420 may include metal, and the other of the first plate 410 and the second plate 420 may include plastic. The thickness of the first plate 410 and the second plate 420 may be the same as or different from each other.

[0060] Figure 5 is in a bent state according to an embodiment Figure 4 A schematic cross-sectional view of a display device. Figure 5 In the display device according to the embodiment, the sliding area SA may be curved. As described above, the curved sliding area SA may require high flexibility and low modulus, and as Figure 4 and Figure 5 As shown in , the cover member 300 may be disposed in the sliding area SA, and thus the sliding area SA may have a low modulus and high flexibility. Figure 5 As shown in FIG. 4 , the separation area between the first plate 410 and the second plate 420 may be covered by the first plate 410 , and thus the separation area may not be visible from the outside.

[0061] Figure 6 is a schematic cross-sectional view of a display device according to another embodiment. Figure 6 The implementation method and Figure 4 The embodiment of the present invention may be different from that of the present invention in that the display device may include a buffer layer 340 below the second plate 420. Detailed description of the same components is omitted. Figure 6 , the display device according to the embodiment may further include a buffer layer 340 disposed under the second plate 420 in the flat area FA. In the case where the buffer layer 340 is disposed under the second plate 420, the impact resistance of the display device may be further improved.

[0062] Figure 7 is a schematic cross-sectional view of a display device according to another embodiment. Figure 7 The implementation method and Figure 4 The embodiment of the present invention may differ in at least the shape of the second plate 420. Detailed description of the same components is omitted. Figure 7, the second plate 420 of the display device according to the embodiment may include a first portion 4201 and a second portion 4202 having different thicknesses. The first portion 4201 may be a portion overlapping the first plate 410 in the thickness direction of the display panel 100, and the thickness of the first portion 4201 may be smaller than the thickness of the second portion 4202 in the thickness direction. The thickness of the second portion 4202 may be greater than the thickness of the first portion 4201, and for this reason, as Figure 7 As shown in , the thickness of the sliding area SA and the thickness of the flat area FA may be similar. In the case where the thickness of the second plate 420 disposed in the flat area FA is increased, the impact resistance of the display device may be improved. The third adhesive layer 510 may be disposed between the first portion 4201 of the second plate 420 and the first plate 410. However, as Figure 7 As shown in FIG. 4 , the adhesive layer may not be disposed between the side surface of the second portion 4202 of the second plate 420 and the first plate 410. For example, the side surface of the second portion 4202 of the second plate 420 and the first plate 410 may be in direct contact.

[0063] However, the present disclosure is not limited thereto, and in another embodiment, the fourth adhesive layer 520 (see Figure 8 ) may be disposed between a side surface of the second portion 4202 of the second plate 420 and the first plate 410 . Figure 8 is a schematic cross-sectional view of a display device according to another embodiment.

[0064] Figure 8 The implementation method and Figure 7 The embodiment of the present invention may be different from that of the present invention at least in that the fourth adhesive layer 520 may be disposed between the side surface of the second portion 4202 of the second plate 420 and the first plate 410. Detailed description of the same constituent elements is omitted.

[0065] In an embodiment, the board 400 may include a first board 410 and a second board 420 separated from each other, but in another embodiment, the display device may further include a third board 430 (see Fig. 9 ). The third plate 430 may be spaced apart from the other plates.

[0066] Fig. 9 is a schematic cross-sectional view of a display device according to another embodiment. Fig. 9 The implementation method and Figure 4 The embodiment of the present invention may be different from that the display device may include a third board 430. Fig. 9As shown in , the third plate 430 may be disposed separately from the first plate 410. The second covering member 330 may be disposed between the third plate 430 and the display panel 100, and the second covering member 330 may be disposed separately from the covering member 300. The separation distance H2 between the third plate 430 and the covering member 300 may be in the range of about 0.2 mm to about 0.5 mm. In the case where the separation distance H2 is less than 0.2 mm, it may be difficult to manage tolerances in the manufacturing process, and the groove may not be formed. In the case where the separation distance H1 is greater than 0.5 mm, the separation area may be visible from the outside.

[0067] In an embodiment, a thickness of the second cover member 330 and a thickness of the cover member 300 may be similar, and a thickness of the third plate 430 and a thickness of the first plate 410 may be similar.

[0068] Fig.10 is a schematic cross-sectional view of a display device according to another embodiment. Fig.10 The implementation method and Fig. 9 The embodiment of the present invention may be different from that of the present invention in at least that the display device may include a second adhesive layer 320 instead of the second cover member 330. Detailed description of the same constituent elements is omitted. Fig.10 , the display panel 100 may be disposed on the second adhesive layer 320. The third adhesive layer 510 may be disposed between the first plate 410 and the third plate 430, and the first plate 410 and the third plate 430 may be bonded to each other. For example, Fig.10 The embodiment may have a symmetrical structure based on the first plate 410.

[0069] The above description is an example of the technical features of the present disclosure, and a person skilled in the art will be able to make various modifications and changes.Therefore, the embodiments of the present disclosure described above can be implemented individually or in combination with each other.

[0070] Therefore, the embodiments disclosed in the present disclosure are not intended to limit the technical spirit of the present disclosure, but are intended to describe the technical spirit of the present disclosure, and the scope of the technical spirit of the present disclosure is not limited by these embodiments. The protection scope of the present disclosure should be interpreted by the attached claims, and should be interpreted as all technical spirits within the equivalent scope are included in the scope of the present disclosure.

Claims

1. A display device, characterized in that include: flat areas and sliding areas; A display panel is arranged in the flat area and the sliding area; a first adhesive layer disposed on the display panel in the flat region; a covering member, disposed on the display panel in the sliding region; a first plate disposed on the cover member; as well as a second plate disposed on the first adhesive layer, wherein the first adhesive layer and the covering member are spaced apart from each other, and A region between the first adhesive layer and the covering member is covered by the first plate.

2. The display device according to claim 1, characterized in that In a thickness direction of the display panel, a thickness of the first adhesive layer is smaller than a thickness of the covering member.

3. The display device according to claim 1, characterized in that The thickness of the first adhesive layer is in a range of 10 μm to 30 μm in a thickness direction of the display panel.

4. The display device according to claim 1, characterized in that The cover member has a thickness in a range of 50 μm to 400 μm in a thickness direction of the display panel.

5. The display device according to claim 1, characterized in that A separation distance between the first adhesive layer and the cover member is in a range of 0.2 mm to 0.5 mm in a thickness direction of the display panel.

6. The display device according to claim 1, characterized in that: the first plate extends into the flat area and is disposed in the flat area, and The first plate and the second plate overlap in the thickness direction of the display panel in the flat region.

7. The display device according to claim 6, characterized in that: Also includes: A second adhesive layer is provided between the first plate and the second plate which overlap each other in the thickness direction.

8. The display device according to claim 1, characterized in that: In a thickness direction of the display panel, a sum of a thickness of the first adhesive layer and a thickness of the second plate is smaller than a thickness of the cover member.

9. The display device according to claim 1, characterized in that: Also includes: A plurality of sliding members are disposed on one side of the first plate.

10. The display device according to claim 1, characterized in that The first plate includes a plurality of slots.

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