Display device and electronic device

Abstract

The invention relates to a display device and an electronic device. The display device includes: a display panel; and a panel support layer disposed below the display panel, in which the panel support layer includes a folding portion, at least one non-folding portion, disposed on at least one side of the folding portion, a plurality of strips and a plurality of slits alternately arranged at the folding portion, and at least one cutting line disposed between the slits and the non-folding portion.

Description

[0001] Cross-references to related applications

[0002] This application claims priority to Korean Patent Application No. 10-2024-0111789, filed on August 21, 2024, with the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] This disclosure relates to display devices. Background Technology

[0004] With the continuous development of information technology in society, the demand for display devices is constantly increasing. Display devices can include liquid crystal displays, field emission displays, and light-emitting displays. Specifically, light-emitting displays can be classified into organic light-emitting displays that use organic light-emitting diodes (OLEDs) as light-emitting elements and inorganic light-emitting displays that use inorganic light-emitting diodes (LEDs).

[0005] Recently, in order to enhance the portability of display devices and provide wider displays, flexible display devices with flexible displays and foldable display devices with foldable display areas have been introduced to the market. Summary of the Invention

[0006] Embodiments of this disclosure provide a display device including a panel support layer with improved durability.

[0007] According to an embodiment of the present disclosure, a display device is provided, including: a display panel; and a panel support layer disposed below the display panel, wherein the panel support layer includes: a folded portion, at least one non-folded portion disposed on at least one side of the folded portion, a plurality of strips and a plurality of slits alternately arranged at the folded portion, and at least one cutting line disposed between the slits and the non-folded portion.

[0008] The width of the cutting line is less than the width of one of the slits in the set.

[0009] At least one cutting line includes a first cutting line and a second cutting line, wherein the first cutting line is disposed between a plurality of slits and non-folded portions, and wherein the second cutting line extends from the first cutting line toward the plurality of slits.

[0010] The first cutting line extends in the same direction as the extension direction of the plurality of slits, and wherein the second cutting line extends in a direction different from the extension direction of the plurality of slits.

[0011] The first cutting line also includes a cutting hole formed at at least one end of the first cutting line.

[0012] The plurality of slits includes a first slit arranged in a first column, a second slit arranged in a second column, and a third slit arranged in a third column, wherein the second slit is offset in one direction relative to the first slit and the third slit.

[0013] The cutting line is parallel to the second slit and offset in one direction relative to the first and third slits.

[0014] At least one cutting line includes a first cutting line extending in one direction and a second cutting line extending from the first cutting line toward a plurality of slits, wherein the distance in one direction between the second cutting line and the first slits is less than the distance between the first slits.

[0015] At least one cutting line includes a first cutting line extending in one direction and a second cutting line extending from the first cutting line toward a plurality of slits, wherein the distance in one direction between the second cutting line and the first slits is equal to the distance between the first slits.

[0016] At least one cutting line includes a plurality of cutting lines, wherein the cutting lines are spaced apart from each other in one direction, and wherein the strip includes spaced strips arranged between the cutting lines.

[0017] The spacing between the cutting lines is equal to the spacing between the second slits.

[0018] When the display panel is folded, the slits extend in a direction different from one direction, and the lengths of the first to third slits are equal to each other.

[0019] When the display panel is folded, the slit contracts in one direction.

[0020] At least one cutting line includes a first cutting line extending in one direction and a second cutting line extending from the first cutting line toward a plurality of slits, wherein the second cutting line is connected to a second slit.

[0021] The second cutting line lies between the first slits in one direction.

[0022] The length of the first slit in one direction is less than the length of the third slit in one direction.

[0023] The plurality of strips includes a first horizontal strip disposed between the first slits, wherein the first horizontal strip includes a first sub-horizontal strip and a second sub-horizontal strip spaced apart from each other, and a second cutting line is disposed between the first sub-horizontal strip and the second sub-horizontal strip.

[0024] According to an embodiment of this disclosure, a display device is provided, comprising: a display panel; and a panel support layer disposed below the display panel, wherein the panel support layer includes: a folded portion, a first non-folded portion disposed on a first side of the folded portion, a second non-folded portion disposed on a second side of the folded portion, and a grid pattern disposed in the folded portion, wherein the grid pattern includes: a plurality of strips and a plurality of slits arranged alternately; a first cutting line disposed between the plurality of slits and the first non-folded portion; and a second cutting line disposed between the plurality of slits and the second non-folded portion.

[0025] The width of one of the first and second cutting lines is less than the width of one of the multiple slits.

[0026] The plurality of slits includes a first slit arranged in a first column, a second slit arranged in a second column, and a third slit arranged in a third column, wherein the second slit is offset in one direction relative to the first slit and the third slit.

[0027] The cutting line is set parallel to the second slit and offset in one direction relative to the first and third slits.

[0028] Each of the first and second cutting lines includes a vertical cutting line and a horizontal cutting line, wherein the vertical cutting line of the first cutting line is disposed between the slit and the first non-folded portion, wherein the vertical cutting line of the second cutting line is disposed between the slit and the second non-folded portion, wherein the horizontal cutting line of the first cutting line extends toward the slit from the vertical cutting line of the first cutting line, and wherein the horizontal cutting line of the second cutting line extends toward the slit from the vertical cutting line of the second cutting line.

[0029] According to an embodiment of the present disclosure, an electronic device is provided, including: a display device, including: a display panel; and a panel support layer disposed below the display panel, wherein the panel support layer includes: a folded portion, at least one non-folded portion disposed on at least one side of the folded portion, a plurality of solid segments and a plurality of openings alternately arranged at the folded portion, and a cutting line disposed between the openings and the non-folded portion. Attached Figure Description

[0030] The above and other features of this disclosure will become more apparent from the detailed description of embodiments thereof with reference to the accompanying drawings, in which: Figure 1 This is a perspective view showing a display device according to an embodiment of the present disclosure when it is unfolded; Figure 2 This is a perspective view showing a display device according to an embodiment of the present disclosure when folded; Figure 3This is a perspective view showing a display device according to another embodiment of the present disclosure when it is unfolded; Figure 4 This is a perspective view showing a display device according to another embodiment of the present disclosure when it is folded. Figure 5 This is a cross-sectional view showing a display device according to an embodiment of the present disclosure; Figure 6 This is a cross-sectional view showing an example of a display panel according to an embodiment of the present disclosure; Figure 7 This is a plan view showing a panel support layer according to an embodiment of the present disclosure; Figure 8 yes Figure 7 A magnified view of region A; Figure 9 This is a plan view showing the grid pattern of the panel support layer when the display device is folded according to an embodiment of the present disclosure; Figure 10 This is a plan view showing the grid pattern of the panel support layer according to the comparative example; Figure 11 It is a plan view showing the grid pattern of the panel support layer according to a comparative example when the display device is folded; Figure 12 This is a plan view showing the grid pattern of a panel support layer according to another embodiment of the present disclosure; Figure 13 This shows the situation when the display device is folded. Figure 12 A plan view of the grid pattern of the panel support layer in the embodiment; Figure 14 This is a plan view showing the grid pattern of a panel support layer according to another embodiment of the present disclosure; and Figure 15 This is a plan view showing the grid pattern of a panel support layer according to another embodiment of the present disclosure. Detailed Implementation

[0031] The present disclosure will now be described in more detail with reference to the accompanying drawings illustrating embodiments. However, the present disclosure may be implemented in different forms and should not be construed as limited to the embodiments set forth herein.

[0032] It will also be understood that when a layer is referred to as being "on" another layer or substrate, it can be directly on the other layer or substrate, or an intervening layer may be present. Throughout the specification, the same reference numerals denote the same components.

[0033] This disclosure relates to a foldable display device having a reinforced panel support layer designed to improve durability and flexibility during folding. The support layer includes a grid pattern of alternating strips and slits in the folded area, which allows for control of deformation while maintaining structural integrity. Additionally, cut lines located near the non-folded portion help to evenly distribute mechanical stress, thereby preventing concentrated strain that could lead to damage over time.

[0034] By optimizing the slit arrangement and incorporating cutting lines, this disclosure ensures smoother folding of the display, reduced wear, and improved lifespan. The panel support layer can be made of sheet metal (e.g., aluminum, stainless steel) or fiber-reinforced polymer, thus balancing flexibility and rigidity in critical areas. This design minimizes issues such as screen creases and mechanical failures, making it ideal for next-generation foldable electronic devices.

[0035] Figure 1 This is a perspective view showing a display device according to an embodiment of the present disclosure when it is unfolded. Figure 2 This is a perspective view showing a display device according to an embodiment of the present disclosure when folded.

[0036] refer to Figure 1 and Figure 2 , Figure 1 The first state of the display device 10 unfolded without folding around the fold lines FL1 and FL2 is shown, and Figure 2 The second state in which the display device 10 is folded around fold lines FL1 and FL2 is shown.

[0037] According to embodiments of this disclosure, the display device 10 may be a foldable display device. According to embodiments of this disclosure, the display device 10 is applied to a smartphone. However, it should be understood that embodiments of this disclosure are not limited thereto. For example, in embodiments of this disclosure, the display device 10 is configured to display both moving images and still images. The display device 10 can be used as a display screen for portable electronic devices such as mobile phones, smartphones, tablet PCs, smartwatches, watch phones, mobile communication terminals, e-notebooks, e-book readers, portable multimedia players (PMPs), navigation devices, and ultra-mobile PCs (UMPCs), as well as a display screen for various products such as televisions, laptops, monitors, billboards, and Internet of Things (IoT) devices.

[0038] The display device 10 according to the embodiments can be classified based on the method used to display the image. For example, the display device 10 may include organic light-emitting display devices, inorganic light-emitting display devices, quantum dot light-emitting display devices, micro-LED display devices, nano-LED display devices, field emission display devices, electrophoretic display devices, etc. In the following description, organic light-emitting display devices will be described as examples of display devices, and organic light-emitting display devices will be simply referred to as display devices unless it is necessary to distinguish them from other display devices. However, it should be understood that the embodiments of this disclosure are not limited to organic light-emitting display devices, and one of the display devices listed above or any other display device known in the art may be used without departing from the scope of this disclosure.

[0039] In the accompanying drawings, when viewed from above, the first direction DR1 can refer to a direction parallel to one side (e.g., the first side) of the display device 10, such as the horizontal direction of the display device 10. The second direction DR2 can refer to a direction parallel to the other side of the display device 10 that intersects with one side (e.g., the first side). For example, when viewed from above, the second direction DR2 can correspond to the vertical direction of the display device 10. The third direction DR3 can refer to the thickness direction of the display device 10.

[0040] The first direction DR1 and the second direction DR2 can be horizontal and can intersect each other. For example, the first direction DR1 and the second direction DR2 can be perpendicular to each other. Furthermore, the third direction DR3 can intersect the first direction DR1 and the second direction DR2, and can be, for example, perpendicular. In this document, the side indicated by the arrow of each of the first direction DR1, the second direction DR2, and the third direction DR3 can be referred to as the "first side," and the opposite side can be referred to as the "second side," unless otherwise stated. As used herein, the terms "upper," "upper side," "above," "top," and "upper surface" refer to the side indicated by the arrow of the third direction DR3 as shown in the figure. The terms "below," "lower side," "below," "bottom," and "lower surface" refer to the opposite side indicated by the arrow of the third direction DR3 as shown in the figure.

[0041] When viewed from above, the display device 10 may have a rectangular or square shape. However, it should be understood that the embodiments of this disclosure are not limited thereto. In some embodiments, when viewed from above, the display device 10 may have a rectangular shape with sharp corners or a rectangular shape with rounded corners. When viewed from above, the display device 10 may include two shorter sides extending in a first direction DR1 and two longer sides extending in a second direction DR2.

[0042] Display device 10 includes a display area DA and a non-display area NDA. When viewed from above, the shape of the display area DA may conform to the shape of the display device 10. For example, if the display device 10 is rectangular when viewed from above, the display area DA may also be rectangular.

[0043] The display area DA can include multiple pixels for displaying images. These pixels can be arranged in a matrix pattern. When viewed from above, the pixels can take on various shapes, including but not limited to rectangles, rhombuses, or squares. For example, the pixels can also form quadrilaterals other than rectangles, rhombuses, or squares, polygons other than quadrilaterals, circles, or ellipses.

[0044] The non-display area NDA may not contain pixels, and therefore may not display an image. The non-display area NDA can be set around the display area DA. For example... Figure 1 and Figure 2 As shown, the non-display area NDA can be configured to surround the display area DA, but this disclosure is not limited thereto. The display area DA can be partially surrounded by the non-display area NDA.

[0045] The display device 10 can remain in its first state when unfolded or in its second state when folded. For example... Figure 2 As shown, the display device 10 can be folded inward (inward folding manner), such that the display area DA is located on the inside. When the display device 10 is folded inward, a portion of the front surface of the display device 10 can face another portion of the front surface of the display device 10. Alternatively, the display device 10 can be folded outward (outward folding manner), such that the display area DA is located on the opposite side and exposed to the outside. When the display device 10 is folded outward, a portion of the rear surface of the display device 10 can face another portion of the rear surface of the display device 10.

[0046] Display device 10 may include a folding region FDA, a first non-folding region NFA1, and a second non-folding region NFA2. Display device 10 may be bent or folded at the folding region FDA, but not at the first non-folding regions NFA1 and NFA2. According to an embodiment, the first non-folding regions NFA1 and NFA2 may be flat areas of display device 10. However, it should be understood that the embodiments of this disclosure are not limited thereto.

[0047] The first non-foldable region NFA1 can be located on one side (e.g., the left side) of the foldable region FDA. The second non-foldable region NFA2 can be located on the opposite side (e.g., the right side) of the foldable region FDA. Here, left side can refer to the second side on the first direction DR1, and right side can refer to the first side on the first direction DR1.

[0048] The folded area FDA may be defined by a first fold line FL1 and a second fold line FL2, at which the display device 10 may be bent at a predetermined curvature. The first fold line FL1 may be the boundary between the folded area FDA and the first non-folded area NFA1, and the second fold line FL2 may be the boundary between the folded area FDA and the second non-folded area NFA2.

[0049] like Figure 1 and Figure 2 As shown, the first fold line FL1 and the second fold line FL2 can extend in the second direction DR2, and the display device 10 can be folded in the first direction DR1. Therefore, the length of the display device 10 in the first direction DR1 can be reduced to about half, making the display device 10 easy to carry.

[0050] When the first fold line FL1 and the second fold line FL2 extend in the second direction DR2, the length of the folded region FDA in the second direction DR2 can be greater than its length in the first direction DR1. Furthermore, the length of the first non-folded region NFA1 in the second direction DR2 can be greater than its length in the first direction DR1. The length of the second non-folded region NFA2 in the second direction DR2 can be greater than its length in the first direction DR1.

[0051] Each of the display area DA and the non-display area NDA may overlap with at least one of the folded area FDA, the first non-folded area NFA1, and the second non-folded area NFA2. Figure 1 and Figure 2 In the example shown, each of the display area DA and the non-display area NDA overlaps with the folded area FDA, the first non-folded area NFA1, and the second non-folded area NFA2.

[0052] Figure 3 This is a perspective view showing a display device according to another embodiment of the present disclosure when it is unfolded. Figure 4 This is a perspective view showing a display device according to another embodiment of the present disclosure when it is folded.

[0053] refer to Figure 3 and Figure 4 , Figure 3 The first state is shown in which the display device 10 is unfolded without folding around the fold lines FL1 and FL2, and Figure 4 The second state in which the display device 10 is folded around fold lines FL1 and FL2 is shown.

[0054] In the first state in which the display device 10 is unfolded, the longer side of the display device 10 can extend in the second direction DR2, and the shorter side of the display device 10 can extend in the first direction DR1.

[0055] According to Figure 3 and Figure 4 In the display device 10 of the embodiment shown, the first fold line FL1 and the second fold line FL2 can extend in the first direction DR1, and the display device 10 can be folded along the second direction DR2.

[0056] The first non-foldable region NFA1 may be located on one side (e.g., the lower side) of the foldable region FDA. The second non-foldable region NFA2 may be located on the opposite side (e.g., the upper side) of the foldable region FDA. In this document, "upper side" may refer to the first side on the second direction DR2, and "lower side" may refer to the second side on the second direction DR2.

[0057] like Figure 3 and Figure 4 As shown, when the first fold line FL1 and the second fold line FL2 extend in the first direction DR1, the length of the folded region FDA in the first direction DR1 can be greater than its length in the second direction DR2. Furthermore, the length of the first non-folded region NFA1 in the second direction DR2 can be greater than its length in the first direction DR1. The length of the second non-folded region NFA2 in the second direction DR2 can be greater than its length in the first direction DR1.

[0058] Figure 5 This is a cross-sectional view showing a display device according to an embodiment of the present disclosure.

[0059] refer to Figure 5 The display device 10 according to this embodiment may include an upper protective film 100, a window 200, a second adhesive layer 300, a display panel 400, a lower protective film 500, a fourth adhesive layer 600, and a panel support layer 700.

[0060] Display panel 400 can be a panel for displaying images. Display panel 400 can be an organic light-emitting display panel including an organic light-emitting layer, a quantum dot light-emitting display panel including a quantum dot light-emitting layer, an inorganic light-emitting display panel using inorganic semiconductor elements as light-emitting elements, or a micro light-emitting display panel using micro light-emitting diodes as light-emitting elements. In the following description, an organic light-emitting display panel is used as display panel 400. However, it should be understood that this disclosure is not limited thereto. Reference will be made later. Figure 6 Description of display panel 400.

[0061] The window 200 can be disposed on the surface of the display panel 400. For example, the window 200 can be disposed on the upper surface of the display panel 400. The window 200 can protect the display panel 400 from external impacts. The window 200 can enhance the impact resistance of the display device 10.

[0062] Window 200 can be made of a transparent material. For example, window 200 can be made of glass or plastic. In some embodiments, window 200 can be ultra-thin glass (UTG) with a thickness of 0.1 mm or less. Alternatively, window 200 can be a transparent polyimide film.

[0063] The second adhesive layer 300 may be disposed below the window 200. For example, the second adhesive layer 300 may be disposed between the window 200 and the display panel 400. The window 200 and the display panel 400 may be bonded to each other through the second adhesive layer 300. The second adhesive layer 300 may include transparent adhesives such as pressure-sensitive adhesive (PSA) and optically clear adhesive (OCA). Alternatively, the second adhesive layer 300 may include an acrylic adhesive material.

[0064] The upper protective film 100 may be disposed on the window 200. The upper protective film 100 may include an upper protective layer 110, a coating film 100a, and a first adhesive layer 120.

[0065] The upper protective layer 110 can perform at least one of the following functions in the event of a breakage of the window 200: impact absorption, scratch resistance, fingerprint resistance, glare reduction, and anti-scattering. The upper protective layer 110 may comprise a highly flexible and scratch-resistant material. For example, the upper protective layer 110 may be a polymer film such as polyethylene terephthalate or a tempered glass film.

[0066] The coating film 100a can be disposed on the upper protective layer 110. For example, the coating film 100a can be disposed on the upper surface of the upper protective layer 110. The coating film 100a can be a low-reflection and anti-fingerprint (LRAF) coating film.

[0067] The first adhesive layer 120 may be disposed below the upper protective layer 110. For example, the first adhesive layer 120 may be disposed between the upper protective layer 110 and the window 200. The upper protective layer 110 and the window 200 may be bonded to each other through the first adhesive layer 120. The first adhesive layer 120 may include transparent adhesives such as pressure-sensitive adhesives (PSA) and optically clear adhesives (OCA). Alternatively, the first adhesive layer 120 may include an acrylic adhesive material.

[0068] During the storage, transportation, and other handling of the upper protective film 100, the first adhesive layer 120 may remain attached to the upper protective layer 110. A release film may be disposed on the lower surface of the first adhesive layer 120 before the first adhesive layer 120 is attached to the window 200. When the upper protective film 100 is handled, the release film may be attached to the lower surface of the first adhesive layer 120, and the release film may be removed when the first adhesive layer 120 is attached to the window 200.

[0069] The lower protective film 500 can be disposed on the opposite surface of the display panel 400. For example, the lower protective film 500 can be disposed on the lower surface of the display panel 400. The lower protective film 500 may include a lower protective layer 510 and a third adhesive layer 520.

[0070] The lower protective layer 510 can support the display panel 400 and protect the opposite surface of the display panel 400. According to some embodiments, the lower protective layer 510 can be a plastic, such as polyethylene terephthalate (PET) and polyimide.

[0071] The third adhesive layer 520 may be disposed on the lower protective layer 510. For example, the third adhesive layer 520 may be disposed between the lower protective layer 510 and the display panel 400. The lower protective layer 510 and the display panel 400 may be bonded to each other through the third adhesive layer 520. The third adhesive layer 520 may include transparent adhesives such as pressure-sensitive adhesive (PSA) and optically clear adhesive (OCA). Alternatively, the third adhesive layer 520 may include an acrylic adhesive material.

[0072] The third adhesive layer 520 can remain attached to the lower protective layer 510 during storage, transportation, and other processing of the lower protective film 500. A release film can be applied to the upper surface of the third adhesive layer 520 before it is attached to the display panel 400. The release film can be attached to the upper surface of the third adhesive layer 520 when the lower protective film 500 is processed, and can be removed when the third adhesive layer 520 is attached to the display panel 400.

[0073] The panel support layer 700 may be disposed below the lower protective film 500. The panel support layer 700 may be a rigid component that resists deformation or volume change under external pressure. Located on the opposite surface of the display panel 400, the panel support layer 700 provides structural support by maintaining its shape and volume, thereby reinforcing the display panel 400.

[0074] According to embodiments of this disclosure, the panel support layer 700 may be a metal plate. For example, the panel support layer 700 may be a metal plate and may be made of metal or metal alloy. The panel support layer 700 may include, but is not limited to, copper (Cu), aluminum (Al), stainless steel (SUS), and / or alloys thereof.

[0075] According to another embodiment, the panel support layer 700 may be a polymer comprising carbon fiber or glass fiber. The panel support layer 700 may have a stacked structure of polymers comprising carbon fiber or glass fiber.

[0076] The panel support layer 700 may include a grid pattern disposed in the folding region FDA, allowing it to be easily bent within the folding region FDA. Because the panel support layer 700 includes a grid pattern disposed in the folding region FDA, the panel support layer 700 can be bent more easily when the display device 10 is folded.

[0077] A fourth adhesive layer 600 may be disposed on the panel support layer 700. For example, the fourth adhesive layer 600 may be disposed between the panel support layer 700 and the lower protective film 500. The panel support layer 700 and the lower protective film 500 may be bonded to each other via the fourth adhesive layer 600. The fourth adhesive layer 600 may include transparent adhesives such as pressure-sensitive adhesive (PSA) and optically clear adhesive (OCA). Alternatively, the fourth adhesive layer 600 may include an acrylic adhesive material.

[0078] Figure 6 This is a cross-sectional view showing an example of a display panel according to an embodiment of the present disclosure.

[0079] refer to Figure 6 The display panel 400 may include a substrate SUB, a display layer DISL, and a touch sensor layer ISP. The display layer DISL may include a thin film transistor layer TFTL, an emissive material layer EML, and an encapsulation layer TFEL.

[0080] The substrate SUB can be made of an insulating material such as a polymer resin. For example, the substrate SUB can be made of polyimide. The substrate SUB can be a flexible substrate that can be bent, folded, or rolled up.

[0081] The thin-film transistor layer (TFTL) can be disposed on the substrate (SUB). The TFTL may include a barrier layer (BR), a thin-film transistor (TFT1), a first capacitor electrode (CAE1), a second capacitor electrode (CAE2), a first anode connection electrode (ANDE1), a second anode connection electrode (ANDE2), a gate insulator (130), a first interlayer dielectric film (141), a second interlayer dielectric film (142), a first planarization film (160), and a second planarization film (180).

[0082] A barrier layer BR can be disposed on a substrate SUB. The barrier layer BR is a film used to protect the thin-film transistor layer TFTL and the emitter layer 172 of the emitter material layer EML. The barrier layer BR can be composed of multiple inorganic films that are alternately stacked with each other. For example, the barrier layer BR can be composed of multiple layers in which one or more inorganic layers selected from silicon nitride, silicon oxynitride, silicon oxide, titanium oxide, and aluminum oxide are alternately stacked with each other.

[0083] The thin-film transistor TFT1 can be disposed on the barrier layer BR. The active layer ACT1 of the thin-film transistor TFT1 can be disposed on the barrier layer BR. The active layer ACT1 of the thin-film transistor TFT1 may include polycrystalline silicon, monocrystalline silicon, low-temperature polycrystalline silicon, amorphous silicon, or oxide semiconductor.

[0084] The active layer ACT1 may include a channel region CHA1, a source region TS1, and a drain region TD1. The channel region CHA1 may overlap with the gate electrode TG1 on a third direction DR3, which is the thickness direction of the substrate SUB. The source region TS1 may be disposed on one side of the channel region CHA1, and the drain region TD1 may be disposed on the opposite side of the channel region CHA1. The source region TS1 and the drain region TD1 may not overlap with the gate electrode TG1 on the third direction DR3. The source region TS1 and the drain region TD1 may be formed by doping silicon semiconductor or oxide semiconductor with ions or impurities to make them conductive.

[0085] The gate insulator 130 can be disposed on the active layer ACT1 of the thin-film transistor TFT1. The gate insulator 130 can be formed of an inorganic layer (e.g., a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer).

[0086] The gate electrode TG1 and the first capacitor electrode CAE1 of the thin-film transistor TFT1 can be disposed on the gate insulator 130. The gate electrode TG1 can overlap with the channel region CHA1 on the third-direction DR3. Although in Figure 6 In the example shown, the gate electrode TG1 and the first capacitor electrode CAE1 are spaced apart from each other, but the gate electrode TG1 and the first capacitor electrode CAE1 can be connected to each other as single pieces. The gate electrode TG1 and the first capacitor electrode CAE1 can be composed of a single layer or multiple layers of one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd) and copper (Cu) or their alloys.

[0087] The first interlayer dielectric film 141 can be disposed on the gate electrode TG1 and the first capacitor electrode CAE1 of the thin-film transistor TFT1. The first interlayer dielectric film 141 can be formed of an inorganic layer (e.g., a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer). The first interlayer dielectric film 141 can be made of multiple inorganic films.

[0088] The second capacitor electrode CAE2 can be disposed on the first interlayer dielectric film 141. The second capacitor electrode CAE2 can overlap with the first capacitor electrode CAE1 on the third-direction DR3. Furthermore, when the gate electrode TG1 and the first capacitor electrode CAE1 are integrally formed, the second capacitor electrode CAE2 can overlap with the gate electrode TG1 on the third-direction DR3. Since the first interlayer dielectric film 141 has a predetermined dielectric constant, the capacitor can be formed by the first capacitor electrode CAE1, the second capacitor electrode CAE2, and the first interlayer dielectric film 141 disposed therebetween. The second capacitor electrode CAE2 can be composed of a single layer or multiple layers of one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu) or their alloys.

[0089] The second interlayer dielectric film 142 can be disposed on the second capacitor electrode CAE2. The second interlayer dielectric film 142 can be formed of an inorganic layer (e.g., a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer). The second interlayer dielectric film 142 can be made of multiple inorganic films.

[0090] The first interlayer dielectric film 141 and the second interlayer dielectric film 142 may be included in the interlayer dielectric film 140.

[0091] The first anode connection electrode ANDE1 can be disposed on the second interlayer dielectric film 142. The first anode connection electrode ANDE1 can be connected to the drain region TD1 of the thin-film transistor TFT1 through a first connection contact hole ANCT1 passing through the gate insulator 130, the first interlayer dielectric film 141, and the second interlayer dielectric film 142. The first anode connection electrode ANDE1 can be composed of a single layer or multiple layers of one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu) or their alloys.

[0092] A first planarization film 160 may be disposed above the first anode connection electrode ANDE1 to create a flat surface, thereby compensating for the horizontal difference caused by the thin-film transistor TFT1. The first planarization film 160 may be formed of an organic layer (such as acrylic resin, epoxy resin, phenolic resin, polyamide resin, and polyimide resin).

[0093] The second anode connection electrode ANDE2 can be disposed on the first planarization film 160. The second anode connection electrode ANDE2 can be connected to the first anode connection electrode ANDE1 through the second connection contact hole ANCT2 passing through the first planarization film 160. The second anode connection electrode ANDE2 can be composed of a single layer or multiple layers of one or an alloy of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd) and copper (Cu).

[0094] The second planarization film 180 can be disposed on the second anode connection electrode ANDE2. The second planarization film 180 can be formed as an organic layer, such as acrylic resin, epoxy resin, phenolic resin, polyamide resin, and polyimide resin.

[0095] The light-emitting element (LEL) and the emitting material layer (EML) of the dam 190 can be disposed on the second planarization film 180. Each of the light-emitting elements (LEL) includes a pixel electrode 171, an emitting layer 172, and a common electrode 173.

[0096] Pixel electrode 171 can be disposed on the second planarization film 180. Pixel electrode 171 can be connected to the second anode connection electrode ANDE2 through a third connection contact hole ANCT3 passing through the second planarization film 180.

[0097] In the top-emission structure in which light is emitted from the emission layer 172 toward the common electrode 173, the pixel electrode 171 can be made of a metallic material with high reflectivity, such as a stacked structure of aluminum and titanium (Ti / Al / Ti), a stacked structure of aluminum (Al) and ITO (indium tin oxide) (ITO / Al / ITO), an APC alloy, and a stacked structure of APC alloy and ITO (ITO / APC / ITO). The APC alloy is an alloy of silver (Ag), palladium (Pd), and copper (Cu).

[0098] The dam 190 can separate the pixel electrode 171 on the second planarization film 180 to define a first emission region EA1 and a second emission region EA2. The dam 190 can be configured to cover the edge of the pixel electrode 171. The dam 190 can be formed of an organic film (such as acrylic resin, epoxy resin, phenolic resin, polyamide resin, and polyimide resin).

[0099] In each of the first emission region EA1 and the second emission region EA2, the pixel electrode 171, the emission layer 172 and the common electrode 173 are stacked sequentially on each other, such that holes from the pixel electrode 171 and electrons from the common electrode 173 recombine with each other in the emission layer 172 to emit light.

[0100] The emitting layer 172 can be disposed on the pixel electrode 171 and the dam 190. The emitting layer 172 may include organic materials to emit light of a specific color. For example, the emitting layer 172 may include a hole transport layer, an organic material layer, and an electron transport layer.

[0101] A common electrode 173 may be disposed on the emitter layer 172. The common electrode 173 may be configured to cover the emitter layer 172. The common electrode 173 may be a common layer formed to cover the first emitter region EA1 and the second emitter region EA2.

[0102] In a top-emitting organic light-emitting diode, the common electrode 173 can be formed of a transparent conductive material (TCP) capable of transmitting light (such as ITO and IZO) or a semi-transmissive conductive material (such as magnesium (Mg), silver (Ag), or an alloy of magnesium (Mg) and silver (Ag)). When the common electrode 173 is formed of a semi-transmissive metallic material, the light extraction efficiency can be improved by using a microcavity.

[0103] Spacer 191 may be disposed on dam 190. During the process of manufacturing emitter layer 172, spacer 191 may support mask. Spacer 191 may be formed of organic layers such as acrylic resin, epoxy resin, phenolic resin, polyamide resin, and polyimide resin.

[0104] According to some embodiments of this disclosure, the display panel 400 may further include a capping layer CPL disposed on the common electrode 173. The capping layer CPL may be made of an inorganic material. For example, the capping layer CPL may include at least one of silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, titanium oxide, tin oxide, cerium oxide, and silicon oxynitride.

[0105] An encapsulation layer TFEL can be disposed on the common electrode 173. The encapsulation layer TFEL may include at least one inorganic layer to prevent oxygen or moisture from penetrating into the emitter material layer EML. Furthermore, the encapsulation layer TFEL may include at least one organic film to protect the emitter material layer EML from particles such as dust. For example, the encapsulation layer TFEL may include a first inorganic encapsulation layer TFE1, an organic encapsulation layer TFE2, and a second inorganic encapsulation layer TFE3.

[0106] A first inorganic encapsulation layer TFE1 can be disposed on the common electrode 173, an organic encapsulation layer TFE2 can be disposed on the first inorganic encapsulation layer TFE1, and a second inorganic encapsulation layer TFE3 can be disposed on the organic encapsulation layer TFE2. The first inorganic encapsulation layer TFE1 and the second inorganic encapsulation layer TFE3 can be composed of multiple layers in which one or more inorganic layers selected from silicon nitride, silicon oxynitride, silicon oxide, titanium oxide, and aluminum oxide are alternately stacked. The organic encapsulation layer TFE2 can be an organic film, such as acrylic resin, epoxy resin, phenolic resin, polyamide resin, polyimide resin, etc.

[0107] The touch sensor layer ISP can be disposed on the encapsulation layer TFEL. The touch sensor layer ISP can be installed in the display panel 400 through a continuous process. The touch sensor layer ISP may include a first touch insulating film TINS1, a first conductive layer ICL1, a second touch insulating film TINS2, a second conductive layer ICL2, and a third touch insulating film TINS3.

[0108] The first touch insulating film TINS1 can be disposed on the encapsulation layer TFEL. The first touch insulating film TINS1 can be formed of an inorganic film (e.g., a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer).

[0109] The first conductive layer ICL1 can be disposed on the first touch insulating film TINS1. The first conductive layer ICL1 can be composed of a single layer or multiple layers of one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd) and copper (Cu) or their alloys.

[0110] The second touch insulating film TINS2 can be disposed on the first conductive layer ICL1. The second touch insulating film TINS2 can be formed of an inorganic layer (e.g., a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer). Alternatively, the second touch insulating film TINS2 can be formed of an organic layer (such as acrylic resin, epoxy resin, phenolic resin, polyamide resin, and polyimide resin).

[0111] The second conductive layer ICL2 can be disposed on the second touch insulating film TINS2. The second conductive layer ICL2 can be composed of a single layer or multiple layers of one or an alloy of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd) and copper (Cu).

[0112] A third touch insulating film (TINS3) is formed on the second conductive layer (ICL2). The third touch insulating film (TINS3) can create a flat surface above the electrodes of the second conductive layer (ICL2), thereby compensating for height variations. The third touch insulating film (TINS3) can be formed from organic layers (such as acrylic resin, epoxy resin, phenolic resin, polyamide resin, and polyimide resin).

[0113] Figure 7 This is a plan view showing a panel support layer according to an embodiment of the present disclosure. Figure 8 yes Figure 7 A magnified view of region A. Figure 9 This is a plan view showing the grid pattern of the panel support layer when the display device is folded, according to an embodiment.

[0114] refer to Figures 7 to 9 The panel support layer 700 may include a folded portion 710, a first non-folded portion 720, and a second non-folded portion 730. The folded portion 710 may be disposed in a folded region FDA, the first non-folded portion 720 may be disposed in a first non-folded region NFA1, and the second non-folded portion 730 may be disposed in a second non-folded region NFA2.

[0115] When the display device 10 is folded, the first non-folding portion 720 and the second non-folding portion 730 may remain folded. The first non-folding portion 720 may be disposed on a second side in the first direction DR1 of the folded portion 710, and the second non-folding portion 730 may be disposed on a first side in the first direction DR1 of the folded portion 710.

[0116] When the display device 10 is folded, the folding portion 710 can be folded. The folding portion 710 can be positioned in the first direction DR1 between the first non-folding portion 720 and the second non-folding portion 730.

[0117] The folded portion 710 may include a grid pattern. For example, the folded portion 710 may include a plurality of strip bars and a plurality of slits SLT disposed between the plurality of strip bars. Each of the plurality of slits SLT may be a hole passing through the panel support layer 700 in a third direction DR3. The plurality of strip bars may be solid portions of the panel support layer 700 without slits SLT.

[0118] The slit SLT can extend in the second direction DR2. For example, the length of each of the multiple slit SLTs in the second direction DR2 can be greater than its length in the first direction DR1.

[0119] exist Figure 8In the example shown, the grid pattern includes multiple slits (SLTs) arranged in the first slit columns CS1 to the seventh slit columns CS7 and multiple bars (BARs) arranged in the first bar columns CB1 to the eighth bar columns CB8. It should be noted that the number of slit columns and bars is not limited to this.

[0120] The first slit columns CS1 to the seventh slit column CS7 and the first strip columns CB1 to the eighth strip columns CB8 can be alternately arranged on the first direction DR1. For example, the first strip columns CB1 to the eighth strip columns CB8 can be arranged sequentially on the first direction DR1. The first slit column CS1 can be located between the first strip column CB1 and the second strip column CB2, the second slit column CS2 can be located between the second strip column CB2 and the third strip column CB3, the third slit column CS3 can be located between the third strip column CB3 and the fourth strip column CB4, the fourth slit column CS4 can be located between the fourth strip column CB4 and the fifth strip column CB5, the fifth slit column CS5 can be located between the fifth strip column CB5 and the sixth strip column CB6, the sixth slit column CS6 can be located between the sixth strip column CB6 and the seventh strip column CB7, and the seventh slit column CS7 can be located between the seventh strip column CB7 and the eighth strip column CB8.

[0121] Each of the slits SLT in the first slit column CS1 can be called the first slit S1, each of the slits SLT in the second slit column CS2 can be called the second slit S2, each of the slits SLT in the third slit column CS3 can be called the third slit S3, each of the slits SLT in the fourth slit column CS4 can be called the fourth slit S4, each of the slits SLT in the fifth slit column CS5 can be called the fifth slit S5, each of the slits SLT in the sixth slit column CS6 can be called the sixth slit S6, and each of the slits SLT in the seventh slit column CS7 can be called the seventh slit S7.

[0122] Multiple bars (BARs) may include the first vertical bar VB1 to the eighth vertical bar VB8 and the first horizontal bar HB1 to the seventh horizontal bar HB7.

[0123] Each bar in column CB1 can be called the first vertical bar VB1, each bar in column CB2 can be called the second vertical bar VB2, each bar in column CB3 can be called the third vertical bar VB3, each bar in column CB4 can be called the fourth vertical bar VB4, each bar in column CB5 can be called the fifth vertical bar VB5, each bar in column CB6 can be called the sixth vertical bar VB6, each bar in column CB7 can be called the seventh vertical bar VB7, and each bar in column CB8 can be called the eighth vertical bar VB8.

[0124] The first slit S1 can be located between the first vertical bar VB1 and the second vertical bar VB2. The second slit S2 can be located between the second vertical bar VB2 and the third vertical bar VB3. The third slit S3 can be located between the third vertical bar VB3 and the fourth vertical bar VB4. The fourth slit S4 can be located between the fourth vertical bar VB4 and the fifth vertical bar VB5. The fifth slit S5 can be located between the fifth vertical bar VB5 and the sixth vertical bar VB6. The sixth slit S6 can be located between the sixth vertical bar VB6 and the seventh vertical bar VB7. The seventh slit S7 can be located between the seventh vertical bar VB7 and the eighth vertical bar VB8.

[0125] Each of the bars in the first slit column CS1 can be referred to as the first horizontal bar HB1, each of the bars in the second slit column CS2 can be referred to as the second horizontal bar HB2, each of the bars in the third slit column CS3 can be referred to as the third horizontal bar HB3, each of the bars in the fourth slit column CS4 can be referred to as the fourth horizontal bar HB4, each of the bars in the fifth slit column CS5 can be referred to as the fifth horizontal bar HB5, each of the bars in the sixth slit column CS6 can be referred to as the sixth horizontal bar HB6, and each of the bars in the seventh slit column CS7 can be referred to as the seventh horizontal bar HB7.

[0126] The first horizontal bar HB1 can be disposed between the first slits S1 that are adjacent to each other along the second direction DR2; the second horizontal bar HB2 can be disposed between the second slits S2 that are adjacent to each other along the second direction DR2; the third horizontal bar HB3 can be disposed between the third slits S3 that are adjacent to each other along the second direction DR2; the fourth horizontal bar HB4 can be disposed between the fourth slits S4 that are adjacent to each other along the second direction DR2; the fifth horizontal bar HB5 can be disposed between the fifth slits S5 that are adjacent to each other along the second direction DR2; the sixth horizontal bar HB6 can be disposed between the sixth slits S6 that are adjacent to each other along the second direction DR2; and the seventh horizontal bar HB7 can be disposed between the seventh slits S7 that are adjacent to each other along the second direction DR2.

[0127] The first horizontal bar HB1 can be positioned on the first direction DR1 between the first vertical bar VB1 and the second vertical bar VB2. The second horizontal bar HB2 can be positioned on the first direction DR1 between the second vertical bar VB2 and the third vertical bar VB3. The third horizontal bar HB3 can be positioned on the first direction DR1 between the third vertical bar VB3 and the fourth vertical bar VB4. The fourth horizontal bar HB4 can be positioned on the first direction DR1 between the fourth vertical bar VB4 and the fifth vertical bar VB5. The fifth horizontal bar HB5 can be positioned on the first direction DR1 between the fifth vertical bar VB5 and the sixth vertical bar VB6. The sixth horizontal bar HB6 can be positioned on the first direction DR1 between the sixth vertical bar VB6 and the seventh vertical bar VB7. Furthermore, the seventh horizontal bar HB7 can be positioned on the first direction DR1 between the seventh vertical bar VB7 and the eighth vertical bar VB8.

[0128] In the first slits S1 to the seventh slits S7, the even-numbered slits S2, S4, and S6 can be offset relative to the odd-numbered slits S1, S3, S5, and S7 in the second direction DR2. Therefore, the lower ends of the odd-numbered slits S1, S3, S5, and S7 can at least partially overlap with the upper ends of the even-numbered slits S2, S4, and S6 in the first direction DR1. Additionally, the upper ends of the odd-numbered slits S1, S3, S5, and S7 can at least partially overlap with the lower ends of the even-numbered slits S2, S4, and S6 in the first direction DR1.

[0129] Furthermore, the odd-numbered horizontal bars HB1, HB3, HB5, and HB7 can be arranged parallel to each other in the first direction DR1, and the even-numbered horizontal bars HB2, HB4, and HB6 can be arranged parallel to each other in the first direction DR1. Additionally, the second horizontal bar HB2 can be positioned between the first slit S1 and the third slit S3, the third horizontal bar HB3 can be positioned between the second slit S2 and the fourth slit S4, the fourth horizontal bar HB4 can be positioned between the third slit S3 and the fifth slit S5, the fifth horizontal bar HB5 can be positioned between the fourth slit S4 and the sixth slit S6, and the sixth horizontal bar HB6 can be positioned between the fifth slit S5 and the seventh slit S7.

[0130] Because the folded portion 710 includes a grid pattern with multiple slits SLT, it provides flexibility. When the display device 10, such as Figure 9 When folded as shown, as when the display device 10 is... Figure 8 Compared to the folded shape shown, the grid pattern extends in the first direction DR1. For example, when folded, the grid pattern can extend from a first width W1 to a second width W2 that is greater than the first width W1.

[0131] Furthermore, when the display device 10 is folded, as the grid pattern extends in the first direction DR1, the grid pattern can simultaneously contract in the second direction DR2. For example, during folding, the grid pattern can contract from a first length L1 to a second length L2 that is smaller than the first length L1.

[0132] The grid pattern of the folded portion 710 of the display device 10 according to this embodiment may further include a plurality of cut lines CTL. Each of the plurality of cut lines CTL may be a hole passing through the panel support layer 700 in a third direction DR3. According to some embodiments, the width of the plurality of cut lines CTL in the first direction DR1 may be smaller than the width of the plurality of slits SLT in the first direction DR1.

[0133] The plurality of cutting lines CTLs may include vertical cutting lines VC1 and VC2 extending in the second direction DR2 and horizontal cutting lines HC1 and HC2 extending in the first direction DR1. The length of each of the vertical cutting lines VC1 and VC2 in the second direction DR2 may be greater than its length in the first direction DR1, and the length of each of the horizontal cutting lines HC1 and HC2 in the first direction DR1 may be greater than its length in the second direction DR2.

[0134] The cutting line CTL can be set in the first outer column CT1 and the second outer column CT2. The first outer column CT1 can be located between the first column CB1 and the first non-folded portion 720, and the second outer column CT2 can be located between the eighth column CB8 and the second non-folded portion 730.

[0135] Each of the cutting lines CTLs set in the first outer column CT1 can be referred to as the first cutting line CTL1, and each of the cutting lines CTLs set in the second outer column CT2 can be referred to as the second cutting line CTL2.

[0136] The first cutting line CTL1 may include a first vertical cutting line VC1 extending in the second direction DR2 and a first horizontal cutting line HC1 extending in the first direction DR1. Each of the first horizontal cutting lines HC1 may have a shape that protrudes from the corresponding first vertical cutting line VC1 in the first direction DR1. In other words, each first horizontal cutting line HC1 may protrude from its corresponding first vertical cutting line VC1 in the first direction DR1.

[0137] The second cutting line CTL2 may comprise a second vertical cutting line VC2 extending in the second direction DR2 and a second horizontal cutting line HC2 extending in the first direction DR1. Each of the second horizontal cutting lines HC2 may have a shape that protrudes from the corresponding second vertical cutting line VC2 in a direction opposite to the first direction DR1. In other words, each second horizontal cutting line HC2 may protrude from its corresponding second vertical cutting line VC2 in a direction opposite to the first direction DR1.

[0138] The lengths of the first vertical cutting line VC1 and the second vertical cutting line VC2 in the second direction DR2 can be substantially equal to the lengths of the second slit S2, the fourth slit S4, and the sixth slit S6 in the second direction DR2. The first vertical cutting line VC1 and the second vertical cutting line VC2 can be located at the same position as the second slit S2, the fourth slit S4, and the sixth slit S6 in the second direction DR2. For example, the first vertical cutting line VC1 and the second vertical cutting line VC2 can completely overlap with the second slit S2, the fourth slit S4, and the sixth slit S6 in the first direction DR1. In other words, the second slit S2, the fourth slit S4, and the sixth slit S6 can be positioned between the first vertical cutting line VC1 and the second vertical cutting line VC2 in the first direction DR1. The first vertical cutting line VC1 and the second vertical cutting line VC2 can be offset relative to the first slit S1, the third slit S3, the fifth slit S5, and the seventh slit S7 in the second direction DR2.

[0139] In the second direction DR2, the first spacer HT1 can be positioned between the first vertical cutting lines VC1, and in the second direction DR2, the second spacer HT2 can be positioned between the second vertical cutting lines VC2. The first spacer HT1 and the second spacer HT2 can be aligned with the second horizontal strip HB2, the fourth horizontal strip HB4, and the sixth horizontal strip HB6 in the first direction DR1. In other words, the first spacer HT1, the second spacer HT2, the second horizontal strip HB2, the fourth horizontal strip HB4, and the sixth horizontal strip HB6 can form a line in the first direction DR1. The length of the first spacer HT1 and the second spacer HT2 in the second direction DR2 can be equal to the length of the second horizontal strip HB2, the fourth horizontal strip HB4, and the sixth horizontal strip HB6 in the second direction DR2. The length of the first spacer HT1 and the second spacer HT2 in the second direction DR2 can be referred to as the first auxiliary length La1.

[0140] The first horizontal cutting line HC1 can be located in the first column CB1. For example, the first horizontal cutting line HC1 can pass through the first vertical bar VB1 in the second direction DR2. The second horizontal cutting line HC2 can be located in the eighth column CB8. For example, the second horizontal cutting line HC2 can pass through the eighth vertical bar VB8 in the second direction DR2.

[0141] The first horizontal cutting line HC1 and the second horizontal cutting line HC2 can overlap with the first horizontal strip HB1, the third horizontal strip HB3, the fifth horizontal strip HB5, and the seventh horizontal strip HB7 in the first direction DR1. In other words, the first horizontal strip HB1, the third horizontal strip HB3, the fifth horizontal strip HB5, and the seventh horizontal strip HB7 can be positioned between the first horizontal cutting line HC1 and the second horizontal cutting line HC2 in the first direction DR1. The distance Lc1 between the first horizontal cutting line HC1 and the first slit S1 and the distance Ld1 between the second horizontal cutting line HC2 and the seventh slit S7 in the second direction DR2 can be less than the length Lb1 of the first horizontal strip HB1, the third horizontal strip HB3, the fifth horizontal strip HB5, and the seventh horizontal strip HB7 in the second direction DR2.

[0142] According to this embodiment, the display device 10 includes a cutting line CTL, thereby allowing the grid pattern to be uniformly distributed under tension elongation in the first direction DR1 and contraction force contraction in the second direction DR2.

[0143] This will be achieved by combining it with... Figure 10 and Figure 11 To further describe this, we will compare it with the grid pattern of another panel support layer in the comparative example.

[0144] Figure 10 This is a plan view showing the grid pattern of the panel support layer according to the comparative example. Figure 11 It is a plan view showing the grid pattern of the panel support layer according to a comparative example when the display device is folded.

[0145] Combination Figures 7 to 9 refer to Figure 10 and Figure 11 The panel support layer 700' according to the comparative example may include a grid pattern. Except that it does not include cut lines CTL, the grid pattern of the panel support layer 700' according to the comparative example is the same as that of the reference. Figure 8 The grid pattern of the panel support layer 700 described in the embodiments is substantially the same. Therefore, redundant descriptions will be omitted.

[0146] When display device 10 Figure 10 Compared to its shape when folded, as shown in the figure, when the display device 10 is as shown... Figure 11 When folded as shown, the grid pattern of the panel support layer 700' in the comparative example can be extended in the first direction DR1. For example, when folded, the grid pattern of the panel support layer 700' can be extended from a first width W1' to a second width W2' that is greater than the first width W1'.

[0147] However, when the grid pattern of the panel support layer 700' in the comparative example elongates in the first direction DR1, it can exhibit minimal contraction in the second direction DR2. For example, when the display device 10 is folded, the edges of the grid pattern of the panel support layer 700' (specifically, the portions adjacent to the non-folded portions 720' and 730' in the first direction DR1) can maintain a second length L2' equal to the first length L1'.

[0148] In the comparative example, the center of the grid pattern in the panel support layer 700' (e.g., the center in the first direction DR1) can shrink from the first length L1' to the third length L3'. The third length L3' can be greater than the... Figures 7 to 9 The second length L2 of the grid pattern of the panel support layer 700 described in the embodiment. In other words, the degree of contraction at the center of the grid pattern of the comparative example panel support layer 700' can be less than Figures 7 to 9 The degree of contraction at the center of the grid pattern of the panel support layer 700 described in the embodiment.

[0149] When the display device 10 is folded, the repulsive force in the grid pattern of the panel support layer 700' in the comparative example can be concentrated at the first fixed portion P1 where the first horizontal bar HB1 intersects with the first non-folded portion 720' and the second fixed portion P2 where the seventh horizontal bar HB7 intersects with the second non-folded portion 730'. Specifically, during folding, a tensile force elongating in the first direction DR1 and a contractile force contracting in the second direction DR2 are generated. However, in the grid pattern of the panel support layer 700' in the comparative example, the first fixed portion P1 and the second fixed portion P2 remain in contact with the first non-folded portion 720' and the second non-folded portion 730', respectively. Therefore, the flexibility required for contraction in the second direction DR2 is insufficient, resulting in a significant increase in the repulsive force.

[0150] Therefore, the grid pattern of the panel support layer 700' in the comparative example can have different degrees of elongation in the second direction DR2 from the center to the edge, as in the first direction DR1. For example, when the display device 10 is unfolded, the distance Wa1' in the second direction DR2 between the center of the fourth horizontal bar HB4 and the center of the fifth horizontal bar HB5, the distance Wb1' in the second direction DR2 between the center of the fifth horizontal bar HB5 and the center of the sixth horizontal bar HB6, and the distance Wc1' in the second direction DR2 between the center of the sixth horizontal bar HB6 and the center of the seventh horizontal bar HB7 can be substantially equal. On the other hand, when the display device 10 is folded, the distance Wa2' in the second direction DR2 between the center of the fourth horizontal bar HB4 and the center of the fifth horizontal bar HB5 can be greater than the distance Wb2' in the second direction DR2 between the center of the fifth horizontal bar HB5 and the center of the sixth horizontal bar HB6. In addition, the distance Wb2' in the second direction DR2 between the center of the fifth horizontal bar HB5 and the center of the sixth horizontal bar HB6 can be greater than the distance Wc2' in the second direction DR2 between the center of the sixth horizontal bar HB6 and the center of the seventh horizontal bar HB7.

[0151] Thus, the elongation tension in the first direction DR1 and the contraction force in the second direction DR2 are not uniformly distributed throughout the grid pattern. Consequently, the first fixed portion P1 and / or the second fixed portion P2 may be subjected to excessive repulsive forces, which could lead to structural failure or cutting at these stress concentration points.

[0152] Conversely, in embodiments of this disclosure, the grid pattern of the panel support layer 700 includes cut lines CTL instead of the first fixing portion P1 and the second fixing portion P2. This design allows the grid pattern to be evenly distributed during the folding of the display device 10, mitigating the tension elongation in the first direction DR1 and the contraction force contracting in the second direction DR2, thereby reducing the risk of stress concentration and structural failure.

[0153] Therefore, the grid pattern of the panel support layer 700 in the embodiments of this disclosure can exhibit a uniform elongation along the first direction DR1 at any point along the second direction DR2. For example, when the display device 10 is unfolded, the distance Wa1 in the second direction DR2 between the centers of the fourth horizontal bar HB4 and the fifth horizontal bar HB5, the distance Wb1 in the second direction DR2 between the centers of the fifth horizontal bar HB5 and the sixth horizontal bar HB6, and the distance Wc1 in the second direction DR2 between the centers of the sixth horizontal bar HB6 and the seventh horizontal bar HB7 can be substantially equal. Furthermore, when the display device 10 is folded, the distance Wa2 in the second direction DR2 between the centers of the fourth horizontal bar HB4 and the fifth horizontal bar HB5, the distance Wb2 in the second direction DR2 between the centers of the fifth horizontal bar HB5 and the sixth horizontal bar HB6, and the distance Wc2 in the second direction DR2 between the centers of the sixth horizontal bar HB6 and the seventh horizontal bar HB7 can be substantially equal.

[0154] In this way, the tensile force that elongates in the first direction DR1 and the contractile force that contracts in the second direction DR2 can be evenly distributed throughout the grid pattern, thereby enhancing the durability of the panel support layer 700.

[0155] In the following description, other embodiments of the display device according to this disclosure will be described. In the following description, the same or similar elements will be indicated by the same or similar reference numerals, and redundant descriptions will be omitted or briefly described.

[0156] Figure 12 This is a plan view showing the grid pattern of a panel support layer according to another embodiment of the present disclosure. Figure 13 This shows the situation when the display device is folded. Figure 12 A plan view of the grid pattern of the panel support layer in the embodiment.

[0157] according to Figure 12 and Figure 13 The display device 10 according to the embodiment and the embodiment of the present invention Figure 8 The difference between the display device 10 of the above-described embodiments is that the shapes of the horizontal cutting lines HC1 and HC2 are different.

[0158] More specifically, in the display device 10 according to this embodiment, horizontal dicing lines HC1 and HC2 can be connected to slits SLT. For example, the first horizontal dicing line HC1 can be connected to the second slit S2, and the second horizontal dicing line HC2 can be connected to the sixth slit S6. For example, the first dicing line CTL1 can be connected to the second slit S2, and the second dicing line CTL2 can be connected to the sixth slit S6. In this case, the individual second slit S2, the individual first horizontal dicing line HC1, and the individual first dicing line CTL1 can together form a single opening in the panel support layer 700. Similarly, the individual sixth slit S6, the individual second horizontal dicing line HC2, and the individual second dicing line CTL2 can together form a single opening in the panel support layer 700.

[0159] The first horizontal cutting line HC1 may extend in the first direction DR1 and may be located in the first column CB1, the first slit column CS1, and the second column CB2. The first horizontal cutting line HC1 may be located in the second direction DR2 between the first slits S1.

[0160] The first horizontal strip HB1 can be divided into two parts by the first horizontal cutting line HC1. For example, the first horizontal strip HB1 can include a first sub-horizontal strip HB1_1 and a second sub-horizontal strip HB1_2. The first sub-horizontal strip HB1_1 and the second sub-horizontal strip HB1_2 can be located on opposite sides with the first horizontal cutting line HC1 between them. The first sub-horizontal strip HB1_1 can be located on a second side of the second direction DR2 of the first horizontal cutting line HC1, and the second sub-horizontal strip HB1_2 can be located on a first side of the second direction DR2 of the first horizontal cutting line HC1.

[0161] The second horizontal cutting line HC2 can extend in the first direction DR1 and can be located in the eighth column CB8, the seventh slit column CS7, and the seventh column CB7. The second horizontal cutting line HC2 can be located in the second direction DR2 between the seventh slits S7.

[0162] The seventh horizontal strip HB7 can be divided into two parts by the second horizontal cutting line HC2. For example, the seventh horizontal strip HB7 can include a third sub-horizontal strip HB7_1 and a fourth sub-horizontal strip HB7_2. The third sub-horizontal strip HB7_1 and the fourth sub-horizontal strip HB7_2 can be located on opposite sides with the second horizontal cutting line HC2 between them. The third sub-horizontal strip HB7_1 can be located on a second side of the second direction DR2 of the second horizontal cutting line HC2, and the fourth sub-horizontal strip HB7_2 can be located on a first side of the second direction DR2 of the second horizontal cutting line HC2.

[0163] According to some embodiments, the length LSa on the second direction DR2 of the first slit S1 and the seventh slit S7 can be less than the length LSb on the second direction DR2 of the third slit S3 and the fifth slit S5. The lengths LS1_1, LS1_2, LS7_1, and LS7_2 on the second direction DR2 of the first sub-horizontal bar HB1_1, the second LS1_2, the third LS7_1, and the fourth LS7_2 can be substantially equal to the lengths LS0 on the second direction DR2 of the second slits S2 to the sixth slit S6.

[0164] Therefore, by maintaining a constant width of the strip BAR adjacent to the slit SLT, the tension that elongates in the first direction DR1 and the contraction force that contracts in the second direction DR2 can be distributed more evenly when the display device 10 is folded.

[0165] Despite the above references Figure 8 In the display device 10 of the embodiments described above, the lengths of the first slit S1 and the seventh slit S7 in the second direction DR2 are equal to the lengths of the third slit S3 and the fifth slit S5, but it should be understood that this disclosure is not limited thereto. For example, with reference to the above... Figure 12 Similar to the display device 10 described in the embodiment, the lengths of the first slit S1 and the seventh slit S7 in the second direction DR2 can be less than the lengths of the third slit S3 and the fifth slit S5 in the second direction DR2. Therefore, the distance Lc1 between the first horizontal cutting line HC1 and the first slit S1 in the second direction DR2, and the distance Ld1 between the second horizontal cutting line HC2 and the seventh slit S7 in the second direction DR2, can be substantially equal to the lengths Lb1 of the first horizontal bar HB1, the third horizontal bar HB3, the fifth horizontal bar HB5, and the seventh horizontal bar HB7.

[0166] Figure 14 This is a plan view showing the grid pattern of a panel support layer according to another embodiment of the present disclosure.

[0167] according to Figure 14 The display device 10 of the above implementation method and the reference above Figure 8 The display device 10 described in the embodiments differs in that the shape of the slit SLT is different and it also includes a cut hole CTH.

[0168] More specifically, the plurality of slits SLT in the display device 10 according to this embodiment may have rounded ends in the second direction DR2. Therefore, the horizontal cutting lines HC1 and HC2 may include curves that conform to the shapes of the two ends of the plurality of slits SLT. Since the slits SLT have rounded ends, the tension of elongation in the first direction DR1 and the contraction force of contraction in the second direction DR2 can be more evenly distributed when the display device 10 is folded.

[0169] According to some embodiments, the cutting line CTL may also include a cutting hole CTH. For example, the first cutting line CTL1 may include a first cutting hole CTH1_1 and a second cutting hole CTH1_2, and the second cutting line CTL2 may include a third cutting hole CTH2_1 and a fourth cutting hole CTH2_2. Figure 14 As shown, the shape of the cut hole CTH when viewed from above can be, but is not limited to, circular. The shape of the cut hole CTH when viewed from above can be changed in various ways.

[0170] The first cutting hole CTH1_1 and the second cutting hole CTH1_2 can be formed at both ends of the first vertical cutting line VC1 in the second direction DR2. For example, the first cutting hole CTH1_1 can be formed on the second side of the first vertical cutting line VC1 in the second direction DR2, and the second cutting hole CTH1_2 can be formed on the first side of the first vertical cutting line VC1 in the second direction DR2.

[0171] The third cutting hole CTH2_1 and the fourth cutting hole CTH2_2 can be formed at both ends of the second vertical cutting line VC2 in the second direction DR2. For example, the third cutting hole CTH2_1 can be formed on the second side of the second vertical cutting line VC2 in the second direction DR2, and the fourth cutting hole CTH2_2 can be formed on the first side of the second vertical cutting line VC2 in the second direction DR2.

[0172] Despite Figure 14 The intermediate cutting holes CTH are formed at both ends of the first vertical cutting line VC1 and the two ends of the second vertical cutting line VC2, but this disclosure is not limited thereto. For example, the first cutting line CTL1 may not include one of the first cutting holes CTH1_1 and the second cutting hole CTH1_2, and the second cutting line CTL2 may not include one of the third cutting hole CTH2_1 and the fourth cutting hole CTH2_2.

[0173] According to this embodiment, the display device 10 includes a cutout hole CTH, which allows for a uniform distribution of tension when the display device 10 is folded in the first direction DR1 and contraction force when it contracts in the second direction DR2.

[0174] Figure 15 This is a plan view showing the grid pattern of a panel support layer according to another embodiment of the present disclosure.

[0175] according to Figure 15 The display device 10 of this embodiment and according to Figure 14 The display device 10 of the embodiment of the above differs in that the horizontal cutting lines HC1 and HC2 have different shapes and also include a bridging cutting line BRC.

[0176] More specifically, in the display device 10 according to this embodiment, horizontal cutting lines HC1 and HC2 can be connected to slits SLT. For example, the first horizontal cutting line HC1 can be connected to the second slit S2, and the second horizontal cutting line HC2 can be connected to the sixth slit S6. For example, the first cutting line CTL1 can be connected to the second slit S2, and the second cutting line CTL2 can be connected to the sixth slit S6.

[0177] The display device 10 according to this embodiment may further include a bridging cut line BRC. The bridging cut line BRC may include a first bridging cut line BRC1, a second bridging cut line BRC2, a third bridging cut line BRC3, a fourth bridging cut line BRC4, and a fifth bridging cut line BRC5.

[0178] The first slit S1 to the seventh slit S7 can be connected to each other via bridging cut lines BRC. For example, the first slit S1 and the third slit S3 can be connected to each other via the first bridging cut line BRC1, the second slit S2 and the fourth slit S4 can be connected to each other via the second bridging cut line BRC2, the third slit S3 and the fifth slit S5 can be connected to each other via the third bridging cut line BRC3, the fourth slit S4 and the sixth slit S6 can be connected to each other via the fourth bridging cut line BRC4, and the fifth slit S5 and the seventh slit S7 can be connected to each other via the fifth bridging cut line BRC5.

[0179] The first horizontal cutting line HC1 may extend in the first direction DR1 and may be located in the first column CB1, the first slit column CS1, and the second column CB2. The first horizontal cutting line HC1 may be located in the second direction DR2 between the first slits S1.

[0180] The first horizontal strip HB1 can be divided into two parts by the first horizontal cutting line HC1. For example, the first horizontal strip HB1 can include a first sub-horizontal strip HB1_1 and a second sub-horizontal strip HB1_2. The first sub-horizontal strip HB1_1 and the second sub-horizontal strip HB1_2 can be located on opposite sides with the first horizontal cutting line HC1 between them. The first sub-horizontal strip HB1_1 can be located on a second side of the second direction DR2 of the first horizontal cutting line HC1, and the second sub-horizontal strip HB1_2 can be located on a first side of the second direction DR2 of the first horizontal cutting line HC1.

[0181] The first bridging cut line BRC1 can extend in the first direction DR1 and can be located in the second column CB2, the second slit column CS2, and the third column CB3. The first bridging cut line BRC1 can be located between the second slits S2 in the second direction DR2. For example, the first bridging cut line BRC1 can separate two adjacent second slits S2 from each other in the second direction DR2.

[0182] The second horizontal strip HB2 can be divided into two parts by the first bridging cut line BRC1. For example, the second horizontal strip HB2 can include a third sub-horizontal strip HB2_1 and a fourth sub-horizontal strip HB2_2. The third sub-horizontal strip HB2_1 and the fourth sub-horizontal strip HB2_2 can be located on opposite sides with the first bridging cut line BRC1 between them. The third sub-horizontal strip HB2_1 can be located on a second side of the second direction DR2 of the first bridging cut line BRC1, and the fourth sub-horizontal strip HB2_2 can be located on a first side of the second direction DR2 of the first bridging cut line BRC1.

[0183] The second bridging cut line BRC2 can extend in the first direction DR1 and can be located in the third column CB3, the third slit column CS3, and the fourth column CB4. The second bridging cut line BRC2 can be located in the second direction DR2 between the third slits S3. The second bridging cut line BRC2 can separate two adjacent third slits S3 in the second direction DR2 from each other.

[0184] The third horizontal strip HB3 can be divided into two parts by the second bridging cut line BRC2. For example, the third horizontal strip HB3 can include a fifth sub-horizontal strip HB3_1 and a sixth sub-horizontal strip HB3_2. The fifth sub-horizontal strip HB3_1 and the sixth sub-horizontal strip HB3_2 can be located on opposite sides with the second bridging cut line BRC2 between them. The fifth sub-horizontal strip HB3_1 can be located on a second side of the second direction DR2 of the second bridging cut line BRC2, and the sixth sub-horizontal strip HB3_2 can be located on a first side of the second direction DR2 of the second bridging cut line BRC2.

[0185] The third bridging cut line BRC3 can extend in the first direction DR1 and can be located in the fourth column CB4, the fourth slit column CS4, and the fifth column CB5. The third bridging cut line BRC3 can also be located in the second direction DR2 between the fourth slits S4. For example, the third bridging cut line BRC3 can separate two adjacent fourth slits S4 in the second direction DR2 from each other.

[0186] The fourth horizontal strip HB4 can be divided into two parts by the third bridging cut line BRC3. For example, the fourth horizontal strip HB4 can include a seventh sub-horizontal strip HB4_1 and an eighth sub-horizontal strip HB4_2. The seventh sub-horizontal strip HB4_1 and the eighth sub-horizontal strip HB4_2 can be located on opposite sides with the third bridging cut line BRC3 between them. The seventh sub-horizontal strip HB4_1 can be located on a second side of the second direction DR2 of the third bridging cut line BRC3, and the eighth sub-horizontal strip HB4_2 can be located on a first side of the second direction DR2 of the third bridging cut line BRC3.

[0187] The fourth bridging cut line BRC4 can extend in the first direction DR1 and can be located in the fifth column CB5, the fifth slit column CS5, and the sixth column CB6. The fourth bridging cut line BRC4 can also be located in the second direction DR2 between the fifth slits S5. For example, the fourth bridging cut line BRC4 can separate two adjacent fifth slits S5 in the second direction DR2 from each other.

[0188] The fifth horizontal strip HB5 can be divided into two parts by the fourth bridging cut line BRC4. For example, the fifth horizontal strip HB5 can include a ninth sub-horizontal strip HB5_1 and a tenth sub-horizontal strip HB5_2. The ninth sub-horizontal strip HB5_1 and the tenth sub-horizontal strip HB5_2 can be located on opposite sides with the fourth bridging cut line BRC4 between them. The ninth sub-horizontal strip HB5_1 can be located on a second side of the second direction DR2 of the fourth bridging cut line BRC4, and the tenth sub-horizontal strip HB5_2 can be located on a first side of the second direction DR2 of the fourth bridging cut line BRC4.

[0189] The fifth bridging cut line BRC5 can extend in the first direction DR1 and can be located in the sixth column CB6, the sixth slit column CS6, and the seventh column CB7. The fifth bridging cut line BRC5 can also be located in the second direction DR2 between the sixth slits S6. For example, the fifth bridging cut line BRC5 can separate two adjacent sixth slits S6 from each other in the second direction DR2.

[0190] The sixth horizontal strip HB6 can be divided into two parts by the fifth bridging cut line BRC5. For example, the sixth horizontal strip HB6 can include an eleventh sub-horizontal strip HB6_1 and a twelfth sub-horizontal strip HB6_2. The eleventh sub-horizontal strip HB6_1 and the twelfth sub-horizontal strip HB6_2 can be located on opposite sides with the fifth bridging cut line BRC5 between them. The eleventh sub-horizontal strip HB6_1 can be located on a second side of the second direction DR2 of the fifth bridging cut line BRC5, and the twelfth sub-horizontal strip HB6_2 can be located on a first side of the second direction DR2 of the fifth bridging cut line BRC5.

[0191] The second horizontal cutting line HC2 can extend in the first direction DR1 and can be located in the eighth column CB8, the seventh slit column CS7, and the seventh column CB7. The second horizontal cutting line HC2 can be located in the second direction DR2 between the seventh slits S7.

[0192] The seventh horizontal strip HB7 can be divided into two parts by the second horizontal cutting line HC2. For example, the seventh horizontal strip HB7 can include a thirteenth sub-horizontal strip HB7_1 and a fourteenth sub-horizontal strip HB7_2. The thirteenth sub-horizontal strip HB7_1 and the fourteenth sub-horizontal strip HB7_2 can be located on opposite sides with the second horizontal cutting line HC2 between them. The thirteenth sub-horizontal strip HB7_1 can be located on a second side of the second direction DR2 of the second horizontal cutting line HC2, and the fourteenth sub-horizontal strip HB7_2 can be located on a first side of the second direction DR2 of the second horizontal cutting line HC2.

[0193] In the display device 10 according to this embodiment, the slit SLT and the cut line CTL can be connected to each other via horizontal cut lines HC1 and HC2 and bridging cut line BRC. For example, the first slit S1, the third slit S3, the fifth slit S5, and the seventh slit S7 can be connected to each other via the first bridging cut line BRC1, the third bridging cut line BRC3, and the fifth bridging cut line BRC5. The first vertical cut line VC1, the second slit S2, the fourth slit S4, the sixth slit S6, and the second vertical cut line VC2 can be connected to each other via the first horizontal cut line HC1, the second bridging cut line BRC2, the fourth bridging cut line BRC4, and the second horizontal cut line HC2.

[0194] According to this embodiment, the display device 10 includes a bridging cut line BRC, such that when the display device 10 is folded, the tension that elongates in the first direction DR1 and the contraction force that contracts in the second direction DR2 can be evenly distributed.

[0195] In addition, based on the above references Figure 8 , Figure 12 , Figure 14The display device 10 of the embodiments described may also include a bridging cut line (BRC). In this case, it is similar to that described in the reference. Figure 15 In the embodiment described in the article, the display device 10 has a horizontal bar that can be divided into sub-horizontal bars that are disposed on both sides of the bridging cut line BRC and spaced apart from each other by the bridging cut line BRC.

[0196] In summary, those skilled in the art will recognize that many variations and modifications can be made to the described embodiments without substantially departing from the principles of this disclosure. Therefore, the embodiments described herein are intended to be illustrative and descriptive, not restrictive.

Claims

1. A display device, including: Display panel; as well as A panel support layer is disposed below the display panel. The panel support layer includes: Folded parts, At least one non-folded portion is disposed on at least one side of the folded portion. Multiple strips and multiple slits are alternately arranged at the folded portion, and At least one cutting line is provided between the slit and the non-folded portion.

2. The display device according to claim 1, wherein, The width of the cutting line is less than the width of one of the plurality of slits.

3. The display device according to claim 1, wherein, The at least one cutting line includes a first cutting line and a second cutting line. Wherein, the first cutting line is disposed between the plurality of slits and the non-folded portion, and The second cutting line extends from the first cutting line toward the plurality of slits.

4. The display device according to claim 3, wherein, The first cutting line extends in the same direction as the extension direction of the plurality of slits, and The second cutting line extends in a direction different from the extension direction of the plurality of slits.

5. The display device according to claim 3, wherein, The first cutting line further includes a cutting hole formed at at least one end of the first cutting line.

6. The display device according to claim 1, wherein, The plurality of slits includes a first slit arranged in a first column, a second slit arranged in a second column, and a third slit arranged in a third column, and The second slit is offset in one direction relative to the first slit and the third slit.

7. The display device according to claim 6, wherein, The cutting line is parallel to the second slit and offset relative to the first slit and the third slit in the same direction.

8. The display device according to claim 7, wherein, The at least one cutting line includes a first cutting line extending in the one direction and a second cutting line extending from the first cutting line toward the plurality of slits, and Wherein, the distance in one direction between the second cutting line and the first slit is less than the distance between the first slits.

9. The display device according to claim 7, wherein, The at least one cutting line includes a first cutting line extending in the one direction and a second cutting line extending from the first cutting line toward the plurality of slits, and Wherein, the distance in one direction between the second cutting line and the first slit is equal to the distance between the first slits.

10. The display device according to claim 7, wherein, The at least one cutting line includes multiple cutting lines. Wherein, the cutting lines are spaced apart from each other in one direction, and The strips include spaced strips arranged between the cutting lines.

11. The display device according to claim 10, wherein, The spacing between the cutting lines is equal to the spacing between the second slits.

12. The display device according to claim 6, wherein, When the display panel is folded, the slit extends in a direction different from the stated direction, and The lengths of the first slit to the third slit are equal.

13. The display device according to claim 12, wherein, When the display panel is folded, the slit contracts in one direction.

14. The display device according to claim 6, wherein, The at least one cutting line includes a first cutting line extending in the one direction and a second cutting line extending from the first cutting line toward the plurality of slits, and The second cutting line is connected to the second slit.

15. The display device according to claim 14, wherein, The second cutting line is located between the first slits in the direction stated.

16. The display device according to claim 15, wherein, The length of the first slit in one direction is less than the length of the third slit in one direction.

17. The display device according to claim 14, wherein, The plurality of strips includes a first horizontal strip disposed between the first slits, and The first horizontal bar includes a first sub-horizontal bar and a second sub-horizontal bar spaced apart from each other, and the second cutting line is between the first sub-horizontal bar and the second sub-horizontal bar.

18. A display device, including: Display panel; as well as A panel support layer is disposed below the display panel. The panel support layer includes: Folded parts, The first non-folding portion is disposed on the first side of the folding portion. The second non-folding portion is disposed on the second side of the folding portion, and A grid pattern is provided in the folded portion, and The grid pattern includes: Multiple strips and multiple slits, arranged alternately. A first cutting line is provided between the plurality of slits and the first non-folded portion, and A second cutting line is provided between the plurality of slits and the second non-folded portion.

19. The display device according to claim 18, wherein, The width of one of the first cutting line and the second cutting line is smaller than the width of one of the plurality of slits.

20. Electronic devices, including: Display devices, including: Display panel; and A panel support layer is disposed below the display panel. The panel support layer includes: Folded parts, At least one non-folded portion is disposed on at least one side of the folded portion. Multiple solid sections and multiple openings are alternately arranged at the folded portion, and A cutting line is provided between the opening and the non-folded portion.

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