Cover layer for display device, display device, and electronic device

Abstract

According to the embodiment of the invention, the invention provides a cover layer for a display device, the display device and an electronic device. The cap layer includes: a first layer forming a substrate; a second layer on the first layer and comprising a random silsesquioxane comprising an ether functional group; and a third layer on the second layer and comprising a random silsesquioxane comprising a perfluoroalkyl functional group.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2024-0022650 filed in the Korean Intellectual Property Office on February 16, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] Embodiments of the present disclosure relate to a cover layer for a display device, a display device including the cover layer, and an electronic device including the display device. Background Art

[0004] As information technology develops, the importance of display devices as a connection medium between users and information is increasing.

[0005] The display device utilizes a structure to improve external visibility. For example, it is useful to adjust the external light reflectivity for improving external visibility.

[0006] The display device can be applied to various suitable product groups. Therefore, it is beneficial for the display device to have excellent properties in various physical properties such as flexibility. Summary of the Invention

[0007] An aspect of an embodiment of the present disclosure is to provide a cover layer having improved visibility by controlling external light reflectivity, a display device including the cover layer, and an electronic device including the display device.

[0008] An aspect of an embodiment of the present disclosure is to provide a cover layer having excellent mechanical properties and flexibility, a display device including the cover layer, and an electronic device including the display device.

[0009] According to an embodiment of the present disclosure, a cover layer for a display device may include: a first layer, forming a substrate; a second layer, on the first layer and including a random silsesquioxane containing an ether functional group (e.g., a silsesquioxane having a random structure); and a third layer, on the second layer and including a random silsesquioxane containing a perfluoroalkyl functional group (e.g., a silsesquioxane having a random structure).

[0010] According to an embodiment, the first layer may include poly(ethylene terephthalate) (PET).

[0011] According to an embodiment, the ether functional group of the second layer may include an ethyl-methyl-ether group (C2H5OCH3), an ether group containing 5 carbon atoms (C5OH 11 ) and / or an ether group containing 4 carbon atoms (C4OH9).

[0012] According to an embodiment, the perfluoroalkyl functional group of the third layer may include CF2CF2CF2CF3, CF2CF2CF3, or CF2CF2CF2CF2CF3.

[0013] According to an embodiment, the first layer may have a thickness in the range of 30 μm to 95 μm.

[0014] According to an embodiment, the second layer may have a thickness in the range of 1 μm to 10 μm.

[0015] According to an embodiment, the third layer may have a thickness in the range of 50 nm to 150 nm.

[0016] According to an embodiment, a surface of the second layer may contact (eg, physically contact) the first layer. Another surface of the second layer may contact (eg, physically contact) the third layer.

[0017] According to an embodiment, the capping layer may have a reflectivity of 1.4% to 1.6% with respect to light having a wavelength of 550 nm.

[0018] According to an embodiment, the third layer may have a refractive index in the range of 1.2 to 1.59.

[0019] According to an embodiment, the cover layer may have an elongation in the range of 10% to 15%.

[0020] According to an embodiment of the present disclosure, a display device may include a light-emitting element layer including a light-emitting element that emits light and a capping layer on the light-emitting element layer. The capping layer may include: a first layer forming a substrate; a second layer on the first layer and including a random silsesquioxane including an ether functional group (e.g., a silsesquioxane having a random structure); and a third layer on the second layer and including a random silsesquioxane including a perfluoroalkyl functional group (e.g., a silsesquioxane having a random structure).

[0021] According to an embodiment, the first layer includes polyethylene terephthalate (PET). The ether functional groups of the second layer may include ethyl-methyl-ether groups (C2H5OCH3), ether groups containing 5 carbon atoms (C5OH 11 ) and / or an ether group (C4OH9) containing 4 carbon atoms. The perfluoroalkyl functional groups of the third layer may include CF2CF2CF2CF3, CF2CF2CF3 and / or CF2CF2CF2CF2CF3.

[0022] According to an embodiment, the first layer may have a thickness in the range of 30 μm to 95 μm, the second layer may have a thickness in the range of 1 μm to 10 μm, and the third layer may have a thickness in the range of 50 nm to 150 nm.

[0023] According to an embodiment, the third layer may be the uppermost layer of the display device.

[0024] According to an embodiment, the display device may be a flexible display device.

[0025] According to an embodiment of the present disclosure, an electronic device may include: a processor configured to transmit an input control signal; a display device configured to output image information; and a power module configured to supply power to the display device. The display device may include: a light-emitting element layer including a light-emitting element that emits light; and a cover layer on the light-emitting element layer. The cover layer may include: a first layer forming a substrate; a second layer on the first layer and including a random silsesquioxane including an ether functional group; and a third layer on the second layer and including a random silsesquioxane including a perfluoroalkyl functional group.

[0026] According to the embodiments of the present disclosure, a cover layer having improved visibility by controlling external light reflectivity, a display device including the cover layer, and an electronic device including the display device may be provided.

[0027] According to the embodiments of the present disclosure, a cover layer having excellent mechanical properties and flexibility, a display device including the cover layer, and an electronic device including the display device may be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and other features of the embodiments of the present disclosure will become more apparent by further describing the embodiments of the present disclosure in detail with reference to the accompanying drawings, in which:

[0029] Figure 1 is a schematic plan view showing a display device according to an embodiment;

[0030] Figure 2 is a schematic cross-sectional view showing a display device according to an embodiment;

[0031] Figure 3 is a schematic cross-sectional view showing a cover layer according to an embodiment;

[0032] Figure 4 is a chemical formula showing a material included in the second layer;

[0033] Figure 5 is a chemical formula showing a material included in the third layer;

[0034] Figure 6 is a block diagram of an electronic device according to an embodiment; and

[0035] Figure 7 Schematic diagrams showing various embodiments of electronic devices. DETAILED DESCRIPTION

[0036] The subject matter of the present disclosure can be modified in various suitable ways and have various suitable forms. Therefore, example embodiments will be shown in the drawings and will be described in more detail in the specification. However, it should be understood that the present disclosure is not intended to be limited to the specific forms disclosed, and the present disclosure includes all modifications, equivalents and alternatives within the spirit and technical scope of the present disclosure.

[0037] Terms such as "first" and "second" can be used to describe various components, but the components should not be limited by the terms. The terms are used only to distinguish one component from another. For example, a first component can be referred to as a second component, and similarly, a second component can be referred to as a first component without departing from the scope of the present disclosure. In the following description, unless the context clearly dictates otherwise, a singular expression includes a plural expression.

[0038] It should be understood that, in this application, terms such as "including" and / or "having" are used to illustrate the presence of features, quantities, steps, operations, components, parts, or combinations thereof described in the specification, but do not exclude the possibility of the pre-existence or addition of one or more other features, quantities, steps, operations, components, parts, or combinations thereof. In an embodiment, when a portion of a layer, region, and / or plate, etc. is referred to as being "on" another portion, this includes not only the case where the portion is "directly on" the other portion, but also the case where another portion exists between the portion and the other portion. In this specification, when a portion of a layer, region, and / or plate, etc. is formed on another portion, the formation direction is not limited to the upward direction but includes forming the portion on the side surface and / or in the downward direction. When a portion of a layer, region, and / or plate, etc. is formed "below" another portion, this includes not only the case where the portion is "directly below" the other portion, but also the case where another portion exists between the portion and the other portion.

[0039] The present disclosure relates to a cover layer for a display device, a display device including the cover layer, and an electronic device including the display device. Hereinafter, a cover layer for a display device, a display device including the cover layer, and an electronic device including the display device according to embodiments are described with reference to the accompanying drawings.

[0040] Figure 1 is a schematic plan view showing a display device according to an embodiment.

[0041] Reference Figure 1 The display device DD may include a base layer BSL and pixels PXL on the base layer BSL. In embodiments, the display device DD may further include a driving circuit unit (eg, a scan driver and / or a data driver), lines, and pads for driving the pixels PXL.

[0042] The display device DD (or base layer BSL) may include a display area DA and a non-display area NDA. The non-display area NDA may refer to an area other than the display area DA. The non-display area NDA may surround at least a portion of the display area DA.

[0043] According to an embodiment, the display device DD may be a flexible display device. For example, the display device DD may be a bendable display device, a rollable display device, and / or a foldable display device.

[0044] According to an embodiment, the display device DD may include a cover layer COL (see FIG. 1 ) having excellent mechanical properties and flexibility. Figure 2 ), and thus the display device DD can be suitably applied to a flexible display device.

[0045] The base layer BSL may form the base surface of the display device DD. The base layer BSL may be a rigid substrate or a flexible substrate and / or a rigid film or a flexible film. For example, the base layer BSL may be a rigid substrate formed of glass and / or tempered glass, a flexible substrate (or film) formed of a plastic material and / or a metal material and / or at least one insulating layer (e.g., an electrically insulating layer). There is no particular limitation on the material and / or physical properties of the base layer BSL. In an embodiment, the base layer BSL may be substantially transparent. Here, substantially transparent may mean that light (e.g., visible light) may be transmitted with a transmittance or greater (e.g., at a set transmittance or greater). In another embodiment, the base layer BSL may be translucent or opaque. In an embodiment, the base layer BSL may include a reflective material according to an embodiment.

[0046] The display area DA may be an area where the pixels PXL are provided. The non-display area NDA may be an area where no pixels PXL are provided. Driving circuit units, lines, and pads connected to the pixels PXL in the display area DA may be in the non-display area NDA.

[0047] According to an embodiment, the pixel PXL (or sub-pixel SPX) may be arranged in a stripe structure or The present invention may be arranged in a structure (eg, RGBG matrix, RGBG structure, or RGBG matrix structure), but is not limited thereto, and various suitable embodiments may be within the scope of the present disclosure. is an officially registered trademark of Samsung Display Co., Ltd.

[0048] According to an embodiment, the pixel PXL (or sub-pixel SPX) may include a first sub-pixel SPX1, a second sub-pixel SPX2, and a third sub-pixel SPX3. Each of the first sub-pixel SPX1, the second sub-pixel SPX2, and the third sub-pixel SPX3 may be a sub-pixel. At least one selected from the first sub-pixel SPX1, the second sub-pixel SPX2, and the third sub-pixel SPX3 may form a pixel unit configured to emit light of various suitable colors.

[0049] For example, each of the first sub-pixel SPX1, the second sub-pixel SPX2, and the third sub-pixel SPX3 may emit light of a color (e.g., a set color). For example, the first sub-pixel SPX1 may be a red pixel that emits red light (e.g., a first color), the second sub-pixel SPX2 may be a green pixel that emits green light (e.g., a second color), and the third sub-pixel SPX3 may be a blue pixel that emits blue light (e.g., a third color). According to an embodiment, the number of second sub-pixels SPX2 may be greater than the number of first sub-pixels SPX1 and the number of third sub-pixels SPX3. However, the color, type (or kind), and / or number, etc., of the first sub-pixel SPX1, the second sub-pixel SPX2, and the third sub-pixel SPX3 that form each pixel unit are not limited to specific examples.

[0050] Figure 2 is a schematic cross-sectional view showing a display device according to an embodiment.

[0051] Reference Figure 2 , the display device DD may include a pixel circuit layer PCL (eg, a backplane layer), a light emitting element layer LEL, and a capping layer COL.

[0052] The pixel circuit layer PCL may be a layer including a pixel circuit for driving the pixel PXL formed by the light emitting element layer LEL (or the light emitting element included in the light emitting element layer LEL). The pixel circuit layer PCL may include a base layer BSL (see Figure 1 ), a conductive layer (e.g., an electrically conductive layer) that forms a pixel circuit, and an insulating layer (e.g., an electrically insulating layer) on the conductive layer.

[0053] The light emitting element layer LEL may be on the pixel circuit layer PCL. According to an embodiment, the light emitting element layer LEL may include a light emitting element. According to an embodiment, the light emitting element may include an organic light emitting diode (OLED). In an embodiment, the light emitting element may include an inorganic light emitting element including an inorganic material. In an embodiment, the light emitting element layer LEL may include a liquid crystal display (LCD). However, the present disclosure is not limited thereto.

[0054] The capping layer COL may be on the light emitting element layer LEL. The capping layer COL may transmit light emitted from the light emitting element layer LEL.

[0055] Refer to the following Figures 3 to 5 Details about the capping layer COL according to the embodiment are further described.

[0056] Figure 3 is a schematic cross-sectional view illustrating a capping layer according to an embodiment. Figure 4 is a chemical formula showing a material included in the second layer. Figure 5 is a chemical formula showing a material included in the third layer.

[0057] Reference Figures 3 to 5 , the capping layer COL may include a first layer L1 , a second layer L2 , and a third layer L3 .

[0058] The first layer L1 may be a base of the cap layer COL. For example, the first layer L1 may form a base on which the second layer L2 is provided. According to an embodiment, the first layer L1 may be a film-type layer.

[0059] The first layer L1 may include an organic material. For example, the first layer L1 may include polyethylene terephthalate (PET). However, the present disclosure is not limited thereto.

[0060] According to an embodiment, the first layer L1 may have a thickness in the range of 30 μm to 95 μm. For example, the first layer L1 may have a thickness of 65 μm. However, the present disclosure is not limited thereto.

[0061] According to an embodiment, each of the second layer L2 and the third layer L3 may include random silsesquioxanes (eg, silsesquioxanes having a random structure) including different functional groups. Therefore, the capping layer COL may concurrently (eg, simultaneously) meet the requirements for the display device DD (see FIG. Figure 2 ) various suitable physical properties useful such as visibility and / or mechanical properties.

[0062] Random silsesquioxane is one of various suitable structural examples of silsesquioxane. Random silsesquioxane is a siloxane material including a silicon-oxygen-silicon bond (Si-O-Si). Random silsesquioxane can be manufactured based on a hydrolysis-condensation method of alkoxy and / or chlorosilane. However, the present disclosure is not limited thereto.

[0063] In random silsesquioxane, organic compounds and inorganic compounds can form a three-dimensional connected structure. Random silsesquioxane can be an organic-inorganic hybrid material in which organic compounds and inorganic compounds are combined on a molecular scale. Therefore, random silsesquioxane can have the properties of both inorganic materials and organic materials.

[0064] For example, random silsesquioxane may have relatively excellent flexibility and solubility as properties of an organic material. In an embodiment, random silsesquioxane may have relatively excellent heat resistance and hardness properties as properties of an inorganic material.

[0065] According to the embodiment, since random silsesquioxane can have excellent flexibility, the display device DD including the capping layer COL can be applicable to a flexible display device. Therefore, even if the display device DD is implemented as a flexible display device, the risk of mechanical properties such as cracks or the possibility of degradation in the display device DD can be reduced.

[0066] For example, the cap layer COL may have a crack strain in the range of 10% to 15%. According to an embodiment, the cap layer COL may have a crack strain of 12.5%. Crack strain is a physical property that indicates resistance to deformation and is the same as or substantially the same as elongation. The crack strain of the cap layer COL can be measured using any suitable device commonly used in the art for measuring elongation.

[0067] The second layer L2 may be on the first layer L1. The second layer L2 may be between the first layer L1 and the third layer L3. According to an embodiment, the second layer L2 may be directly on (eg, contacting) the first layer L1.

[0068] The second layer L2 may include random silsesquioxane including an ether functional group (eg, silsesquioxane having a random structure). The chemical formula of the random silsesquioxane including an ether functional group is Figure 4 As shown in Figure 4 In the example, R may represent an ether group (e.g., C n OH 2n+1 ). For example, R may represent an ethyl-methyl-ether group (C2H4OCH3 or C2H5OCH2). In an embodiment, R may represent an ether group including 5 carbon atoms (C5OH 11 In an embodiment, R may represent an ether group (C4OH9) including four carbon atoms.

[0069] The random silsesquioxane including an ethyl-methyl-ether functional group (ie, an ethyl-methyl-ether group) according to an embodiment may include 12 ethyl-methyl-ether groups in the molecule. The random silsesquioxane including an ethyl-methyl-ether functional group may include six reactive groups.

[0070] According to embodiments, the second layer L2 may be a hard coating layer. For example, since the second layer L2 includes random silsesquioxane containing an ethyl-methyl-ether group, the second layer L2 may have high hardness and relatively excellent flexibility. In embodiments, since the second layer L2 includes random silsesquioxane having excellent mechanical properties, the stretchability and wear resistance of the cap layer COL may be improved.

[0071] According to the embodiment, since the second layer L2 includes the random silsesquioxane including the ethyl-methyl-ether functional group, the second layer L2 may have excellent heat resistance.

[0072] According to an embodiment, the second layer L2 may be manufactured by depositing random silsesquioxane forming the second layer L2 on the first layer L1. Since random silsesquioxane has excellent reactivity, the second layer L2 may be efficiently manufactured through a vacuum deposition polymerization process.

[0073] According to an embodiment, the second layer L2 may have a thickness in the range of 1 μm to 10 μm. For example, the second layer L2 may have a thickness of 5 μm.

[0074] The third layer L3 may be on the second layer L2. The third layer L3 may be the uppermost layer of the cover layer COL. The third layer L3 may be the uppermost layer of the display device DD. According to an embodiment, the third layer L3 may be directly on (eg, in contact with) the second layer L2.

[0075] The third layer L3 may include random silsesquioxane including a perfluoroalkyl functional group (eg, silsesquioxane having a random structure). The chemical formula of the random silsesquioxane including a perfluoroalkyl functional group is Figure 5 As shown in Figure 5 In the example, Rf may represent a fluorine-containing perfluoroalkyl functional group (e.g., C n F 2n+1 ). For example, Rf may include a fluorine-containing perfluoroalkyl functional group containing four carbon atoms (CF2CF2CF2CF3). In an embodiment, Rf may include a fluorine-containing perfluoroalkyl functional group containing three carbon atoms (CF2CF2CF3). In an embodiment, Rf may include a fluorine-containing perfluoroalkyl functional group containing five carbon atoms (CF2CF2CF2CF2CF3).

[0076] The random silsesquioxane including a perfluoroalkyl functional group according to an embodiment may include 12 fluorine-containing perfluoroalkyl functional groups in a molecule. The random silsesquioxane including a perfluoroalkyl functional group may include six reactive groups.

[0077] According to an embodiment, the third layer L3 may be a low-refractive layer. For example, the third layer L3 may have a refractive index lower than that of the second layer L2. According to an embodiment, the refractive index of the third layer L3 may be in a range of 1.2 to 1.59. According to an embodiment, the refractive index of the third layer L3 may be 1.39.

[0078] According to embodiments, the third layer L3 may have low reflectivity. For example, the reflectivity of the cap layer COL including the third layer L3 may be 1.4% to 1.6%. For example, the reflectivity of the cap layer COL including the third layer L3 may be 1.42% or 1.51%. In embodiments, the reflectivity of the cap layer COL including the third layer L3 may be described based on an embodiment in which the thickness of the third layer L3 is 100 nm and the wavelength of the applied light is 550 nm. However, the present disclosure is not limited thereto.

[0079] Therefore, the third layer L3 can achieve low reflectivity for external light and reduce the external light reflectivity of the display device DD. Therefore, the risk of visibility being impaired by external light can be reduced, and a display device DD with improved visibility can be provided. Finally, the display device DD according to the embodiment can be provided with high visibility and suitable for use as a flexible display device.

[0080] According to an embodiment, the third layer L3 may be an anti-fingerprint layer. According to an embodiment, the upper surface of the third layer L3 may be exposed. The upper surface of the third layer L3 may include an area where the main body of the display device DD touches and a touch event may occur. According to an embodiment, the third layer L3 provided relatively on the upper side may include a random silsesquioxane containing a perfluoroalkyl functional group (e.g., a fluorine-containing material), and thus the third layer L3 may have excellent wear resistance and friction resistance and may be used as an anti-fingerprint layer. Therefore, an additional layer for realizing the anti-fingerprint layer may not be required, and the process cost may ultimately be reduced.

[0081] According to an embodiment, the third layer L3 may be manufactured by depositing random silsesquioxane forming the third layer L3 on the second layer L2. As described above, since random silsesquioxane has excellent reactivity, the third layer L3 may be efficiently manufactured through a vacuum deposition polymerization process.

[0082] According to an embodiment, the third layer L3 may have a thickness in the range of 50 nm to 150 nm. The third layer L3 may have a thickness in the range of 80 nm to 120 nm. For example, the third layer L3 may have a thickness of 100 nm.

[0083] Finally, since the display device DD according to the embodiment includes a cover layer COL (the cover layer COL includes a second layer L2 and a third layer L3 respectively containing different random silsesquioxanes), a display device DD with improved display quality and improved mechanical properties can be provided, and the display device DD can be applied to various suitable flexible display devices.

[0084] The display device according to the embodiment is applicable to various types of electronic devices. In the embodiment, the electronic device includes the above-mentioned display device and may further include other modules or devices having additional functions in addition to the display device.

[0085] Figure 6 is a block diagram of an electronic device according to an embodiment. Figure 6 , the electronic device 10 may include a display module 11 , a processor 12 , a memory 13 and a power module 14 .

[0086] The processor 12 may include at least one of a central processing unit (CPU), an application processor (AP), a graphics processor (GPU), a communication processor (CP), an image signal processor (ISP), and a controller.

[0087] The memory 13 may store data and / or information for operating the processor 12 or the display module 11. When the processor 12 executes an application stored in the memory 13, an image data signal and / or an input control signal may be transmitted to the display module 11. The display module 11 may process the provided signals and output image information on a display screen.

[0088] The power module 14 may include a power supply module (such as a power adapter or a battery device) and a power conversion module. The power conversion module converts the power supplied by the power supply module and generates power to operate the electronic device 10.

[0089] According to the embodiment described above, at least one of the components of the electronic device 10 may be included in the display device. Furthermore, in terms of functionality, some of the multiple individual modules included in one module may be included in the display device, and other modules may be provided separately from the display device. For example, the display module 11 may be included in the display device, while the processor 12, memory 13, and power module 14 may not be included in the display device and may instead be provided separately in the electronic device 10.

[0090] Figure 7 Schematic diagrams showing various embodiments of electronic devices.

[0091] refer to Figure 7Various types of electronic devices to which embodiments of the display device are applied may include electronic devices for displaying images (such as smart phones 10_1a, tablet personal computers (PCs) 10_1b, laptop computers 10_1c, televisions (TVs) 10_1d, and desktop monitors 10_1e), wearable electronic devices including display modules (such as smart glasses 10_2a, head-mounted displays (HMDs) 10_2b, and smart watches 10_2c), and automotive electronic devices 10_3 including display modules (such as central information displays (CIDs) provided on dashboards, central instrument panels, and instrument panels of vehicles, and interior rearview mirror displays).

[0092] As described above, although the subject matter of the present disclosure has been described with reference to the above example embodiments, it will be understood by those skilled in the art or those of ordinary skill in the art that various modifications and changes may be made to the subject matter of the present disclosure without departing from the spirit and technical field of the present disclosure described in the appended claims and their equivalents.

[0093] Therefore, the technical scope of the present disclosure should not be limited to the contents described in the detailed description of the specification, but should be defined by the appended claims and their equivalents.

Claims

1. A cover layer for a display device, wherein: The cap layer comprises: The first layer forms the matrix; a second layer on the first layer and comprising a random silsesquioxane comprising an ether functional group; and A third layer is on the second layer and includes a random silsesquioxane containing a perfluoroalkyl functional group.

2. The cover layer according to claim 1, wherein The first layer includes poly(ethylene terephthalate).

3. The cover layer according to claim 1, wherein The ether functional group of the second layer includes an ethyl-methyl-ether group, an ether group containing 5 carbon atoms, or an ether group containing 4 carbon atoms.

4. The cover layer according to claim 1, wherein The perfluoroalkyl functional group of the third layer includes CF2CF2CF2CF3, CF2CF2CF3 or CF2CF2CF2CF2CF3.

5. The cap layer according to claim 1, wherein The first layer has a thickness in the range of 30 μm to 95 μm. The cap layer according to claim 1 , wherein: The second layer has a thickness in the range of 1 μm to 10 μm.

7. The cap layer according to claim 1, wherein The third layer has a thickness in the range of 50 nm to 150 nm.

8. The cap layer according to claim 1, wherein A surface of the second layer contacts the first layer, and The other surface of the second layer contacts the third layer.

9. The cap layer according to claim 1, wherein The cover layer has a reflectivity of 1.4% to 1.6% with respect to light having a wavelength of 550 nm.

10. The cap layer according to claim 1, wherein The third layer has a refractive index in the range of 1.2 to 1.

59.

11. The cap layer according to claim 1, wherein The cover layer has an elongation in the range of 10% to 15%.

12. A display device, wherein: The display device includes: a light-emitting element layer including a light-emitting element that emits light; and a cap layer on the light emitting element layer, Wherein, the cover layer comprises: The first layer forms the matrix; a second layer on the first layer and comprising a random silsesquioxane comprising an ether functional group; and A third layer is on the second layer and includes a random silsesquioxane containing a perfluoroalkyl functional group.

13. The display device according to claim 12, wherein: The first layer comprises poly(ethylene terephthalate), The ether functional group of the second layer includes an ethyl-methyl-ether group, an ether group containing 5 carbon atoms, or an ether group containing 4 carbon atoms, and The perfluoroalkyl functional group of the third layer includes CF2CF2CF2CF3, CF2CF2CF3 or CF2CF2CF2CF2CF3.

14. The display device according to claim 12, wherein: the first layer has a thickness in the range of 30 μm to 95 μm, The second layer has a thickness in the range of 1 μm to 10 μm, and The third layer has a thickness in the range of 50 nm to 150 nm.

15. The display device according to claim 12, wherein: The third layer is the uppermost layer of the display device.

16. The display device according to claim 12, wherein: The display device is a flexible display device.

17. An electronic device, wherein: The electronic device comprises: a processor configured to transmit an input control signal; a display device configured to output image information; and a power module configured to supply power to the display device, Wherein, the display device includes: a light-emitting element layer including a light-emitting element that emits light; and a cover layer on the light emitting element layer, Wherein, the covering layer comprises: The first layer forms the matrix; a second layer on the first layer and comprising a random silsesquioxane comprising an ether functional group; and A third layer is on the second layer and includes a random silsesquioxane containing a perfluoroalkyl functional group.

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