Display device comprising a window

Abstract

A display device is disclosed. The display device includes a display panel; and a window disposed on the display panel. The window includes a base layer including a first surface and a second surface opposite to each other, a first inorganic layer disposed on the first surface of the base layer, a second inorganic layer in contact with the second surface of the base layer, and a protective layer disposed between the base layer and the first inorganic layer or on a first portion of the first inorganic layer opposite to a second portion of the first inorganic layer facing the base layer.

Description

[0001] Cross Reference to Related Applications

[0002] This application claims priority to Korean Patent Application No. 10-2020-0074368, filed on June 18, 2020, and all benefits accruing therefrom, the disclosure of which is incorporated herein in its entirety by reference. TECHNICAL FIELD

[0003] Embodiments of the present application relate to a window and a display device including the same, and more particularly, to a window and a display device having a flexible feature and improved impact resistance against an external impact. BACKGROUND

[0004] In recent years, foldable or bendable electronic devices are being actively developed. Such flexible electronic devices each include an electronic panel such as a flexible display panel or a flexible touch panel, and a different external member. The external member has a function different from each other. The external member is disposed on at least any one of opposite surfaces of each of such electronic devices. The external member can be deformable, for example, rollable, bendable, or foldable, together with the electronic device. SUMMARY

[0005] The external member needs to have a relatively flexible property in order to be deformable, for example, rollable, bendable, or foldable. The flexible property can enhance reliability against stress caused by bending, but can reduce reliability against an external impact.

[0006] Embodiments of the present application provide a window having improved flexibility and improved impact resistance against an external impact.

[0007] Embodiments of the present application also provide a flexible display device capable of preventing damage to a display module due to an external impact while maintaining flexibility.

[0008] Embodiments of the present application provide a display device including a display panel, and a window disposed on the display panel. The window includes a base layer having a first surface and a second surface opposite to each other, a first inorganic layer disposed on the first surface of the base layer, a second inorganic layer in contact with the second surface of the base layer, and a protective layer disposed between the base layer and the first inorganic layer, or on a first portion of the first inorganic layer opposite to a second portion of the first inorganic layer facing the base layer.

[0009] In embodiments, the protective layer can be disposed between the base layer and the first inorganic layer, the first inorganic layer can include a plurality of layers, and the first inorganic layer can have a total thickness of about 10 nanometers (nm) or more.

[0010] In an embodiment, the protective layer can be disposed between the base layer and the first inorganic layer, and the display device can further include a protective film disposed on the first portion of the first inorganic layer, and an adhesive layer bonding the first inorganic layer and the protective film.

[0011] In an embodiment, the protective layer can be disposed between the base layer and the first inorganic layer, and the display device can further include an anti-fingerprint layer disposed on the first portion of the first inorganic layer, and a primer layer increasing a bonding strength between the anti-fingerprint layer and the first inorganic layer.

[0012] In an embodiment, the display device can further include a shock absorbing layer disposed on a first portion of the second inorganic layer, and an adhesive layer bonding the second inorganic layer and the shock absorbing layer, wherein the first portion of the second inorganic layer is opposite to a second portion of the second inorganic layer facing the base layer.

[0013] In an embodiment, the anti-fingerprint layer can be provided by a coating solution.

[0014] In an embodiment, the protective layer can be disposed on the first portion of the first inorganic layer.

[0015] In an embodiment, the display device can further include a primer layer increasing a bonding strength between the protective layer and the first inorganic layer.

[0016] In an embodiment, the display device can further include a shock absorbing layer disposed on a first portion of the second inorganic layer, and an adhesive layer bonding the second inorganic layer and the shock absorbing layer, wherein the first portion of the second inorganic layer is opposite to a second portion of the second inorganic layer facing the base layer.

[0017] In an embodiment, the protective layer can include an organic material increasing a surface hardness and an anti-fingerprint material.

[0018] In an embodiment, the first inorganic layer can have a thickness of about 50 nm to about 150 nm.

[0019] In an embodiment, the first inorganic layer can include a plurality of layers.

[0020] In an embodiment, the protective layer can be disposed on the first portion of the first inorganic layer and can contact the first inorganic layer.

[0021] In an embodiment, the protective layer can include an inorganic material, and the display device can further include an anti-fingerprint layer disposed on the protective layer, a primer layer increasing a bonding strength between the anti-fingerprint layer and the protective layer, a shock absorbing layer disposed on a first portion of the second inorganic layer, wherein the first portion of the second inorganic layer is opposite to a second portion of the second inorganic layer facing the base layer, and an adhesive layer bonding the second inorganic layer and the shock absorbing layer.

[0022] In an embodiment, the first inorganic layer can have a thickness of about 50 nm to about 150 nm.

[0023] In an embodiment, the anti-fingerprint layer can be provided from a coating solution.

[0024] In an embodiment, the protective layer can include an organic material, and the display device can further include an anti-fingerprint layer disposed on the protective layer, and a primer layer that increases a bonding strength between the anti-fingerprint layer and the protective layer.

[0025] In an embodiment, the first inorganic layer can have a thickness of about 10 nm to about 25 nm.

[0026] In an embodiment, the anti-fingerprint layer can include an anti-fingerprint material.

[0027] In an embodiment, the first inorganic layer can include a plurality of layers.

[0028] In an embodiment, the first inorganic layer and the second inorganic layer can include any one of silicon nitride, silicon oxynitride, and silicon oxide.

[0029] In an embodiment, the display device can be folded with respect to a folding axis extending in one direction. BRIEF DESCRIPTION OF DRAWINGS

[0030] The accompanying drawings are included to provide a further understanding of the present application, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the present application and, together with the specification, serve to explain principles of the present application. In the drawings:

[0031] Figure 1 is a perspective view of an embodiment of a display device according to the present application;

[0032] Figure 2A is a perspective view of an embodiment of a display device according to the present application in a folded-in state;

[0033] Figure 2B is a perspective view of an embodiment of a display device according to the present application in a folded-out state;

[0034] Figure 2C is a perspective view of an embodiment of a display device according to the present application in a bent state;

[0035] Figure 2D is a perspective view of an embodiment of a display device according to the present application in a bent state;

[0036] Figure 2Eis a perspective view showing an embodiment of a display device according to the present application in a bent state;

[0037] Figure 3A is an assembled perspective view of an embodiment of a display device according to the present application;

[0038] Figure 3B is a sectional view of an embodiment of a display device according to the present application;

[0039] Figure 4A is a plan view of an embodiment of a display panel according to the present application;

[0040] Figure 4B is an equivalent circuit diagram of an embodiment of a pixel according to the present application;

[0041] Figure 5 is a sectional view of an embodiment of a window according to the present application;

[0042] Figure 6 is a sectional view of an embodiment of a window according to the present application;

[0043] Figure 7 is a sectional view of an embodiment of a window according to the present application;

[0044] Figure 8A is a sectional view of an embodiment of a window according to the present application;

[0045] Figure 8B is a sectional view of an embodiment of a window according to the present application;

[0046] Figure 9 is a sectional view of an embodiment of a window according to the present application;

[0047] Figure 10 is a sectional view of an embodiment of a window according to the present application;

[0048] Figure 11A is a sectional view of an embodiment of a window according to the present application; and

[0049] Figure 11B is a sectional view of an embodiment of a window according to the present application. DETAILED DESCRIPTION

[0050] In the present disclosure, when an element (or a region, layer, part, and the like) is referred to as being "on" or "connected to" or "coupled to" another element, it can be directly on, connected to, or coupled to the other element, or there can be intervening elements therebetween.

[0051] The same reference numbers are used throughout the drawings to represent the same elements. Furthermore, in the accompanying drawings, the thickness of lines, the proportions of the various components, and the relative sizes of the various components are exaggerated for the sake of clarity and convenience.

[0052] The term "and / or" includes all combinations of one or more of the associated items.

[0053] It will be understood that, although the terms "first", "second", etc. can be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of embodiments of the present application. The singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise.

[0054] In addition, terms such as "below", "under", "above", "over", and the like, are used herein to describe the relationship of one element to another in the configurations shown in the drawings. These terms are used as relative concepts and are described with reference to the directions indicated in the drawings.

[0055] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0056] "About" or "approximately," as used herein, includes the recited value and the average value within an acceptable range of deviation for the particular value as determined by one of ordinary skill in the art to which the discussion pertains, and the error in measurement associated with the measurement of the particular quantity (i.e., the limitations of the measurement system). For example, "about" can mean within one or more standard deviations, or within ± 30%, ± 20%, ± 10%, ± 5% of the recited value.

[0057] It is to be understood that the terms "including", "comprising", "having" and the like are meant to be interpreted inclusively rather than exclusively. That is, unless otherwise indicated, these terms are to be interpreted to mean "including but not limited to". It will be further understood that the terms "comprises" and "comprising", when used in this disclosure and claims, specify the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof. In the following, embodiments of the present application will be described with reference to the drawings.

[0058] Figure 1 is a perspective view of an embodiment of a display device according to the present application. Figure 2A is a perspective view of an embodiment of a display device according to the present application in a folded-in state. Figure 2Bis a perspective view showing an embodiment of the display device according to the present application in a folded-out state. Figure 2C is a perspective view showing an embodiment of the display device according to the present application in a folded-out state. Figure 2D is a perspective view showing an embodiment of the display device according to the present application in a folded-out state. Figure 2E is a perspective view showing an embodiment of the display device according to the present application in a folded-out state.

[0059] Referring to Figure 1 , the display device DD of the embodiment of the present application includes a display surface IS that displays an image IM. The display surface IS that displays the image IM is parallel to a plane defined by a first direction DR1 and a second direction DR2. A normal direction of the display surface IS (i.e., a thickness direction of the display device DD) is indicated by a third direction DR3. An upper surface (or a front surface) and a rear surface (or a lower surface) of each member are separated by the third direction DR3. However, the directions indicated by the first direction DR1, the second direction DR2, and the third direction DR3 are relative concepts, and thus can be changed to other directions. Although a flexible display device is shown in the illustrated embodiment, the present application is not limited thereto. In another embodiment, the display device DD can be a rigid display device.

[0060] The display device DD in the embodiment of the present application can be a deformable display device, such as a foldable display device or a rollable display device. The display device DD in the embodiment of the present application can be used not only for large display devices such as televisions and monitors, but also for small and medium display devices such as mobile phones, tablet computers, car navigation units, game consoles, and smart watches.

[0061] The display surface IS of the display device DD in the embodiment of the present application can include a plurality of regions. The display device DD can include a display region DD-DA in which the image IM is displayed, and a non-display region DD-NDA adjacent to the display region DD-DA. The non-display region DD-NDA can be a region in which the image IM is not displayed. In Figure 1 In the embodiment, an application icon and a clock window are presented as examples of the image IM. The display region DD-DA can have a quadrilateral (e.g., rectangular) shape. The non-display region DD-NDA can surround the display region DD-DA. However, the present application is not limited thereto, and the outer shape of the display region DD-DA and the non-display region DD-NDA can be changed in relation.

[0062] Although not shown, the display device DD can include a housing. The housing combines with the window WM to define the appearance of the display device DD, and the components of the display device DD can be accommodated in an internal space defined by the housing and the window WM to protect them from external impacts. Also, the housing can include a hinge according to the folding feature of the display device DD, and the present application is not limited to one embodiment.

[0063] Referring to Figure 2A , the display device DD in an embodiment of the present application can be folded inward with respect to the folding axis BX. The virtual folding axis BX can be defined on the display surface IS to extend along the second direction DR2. When the display device DD in an embodiment of the present application is folded inward with respect to the folding axis BX, the display device DD is folded such that the display surface IS can face itself, and the rear surface opposite to the display surface IS can be exposed to the outside.

[0064] Referring to Figure 2B , the display device DD in an embodiment of the present application can be folded outward with respect to the folding axis BX. The virtual folding axis BX can be defined on the rear surface of the display device DD to extend along the second direction DR2. When the display device DD in an embodiment of the present application is folded outward with respect to the folding axis BX, the display device DD is folded such that the rear surface can face itself, and the display surface IS can be exposed to the outside.

[0065] Referring to Figure 2C to Figure 2E , the display device DD in an embodiment of the present application can be folded or rolled in various ways. As shown in Figure 2C , the display device DD in an embodiment of the present application can be rolled or folded inward from the end portions. As shown in Figure 2D , the display device DD in an embodiment of the present application can be rolled or folded outward from the end portions. As shown in Figure 2E , the display device DD in an embodiment of the present application can be folded or rolled in a diagonal direction. However, the rolling or folding of the display device DD shown in Figure 2A to Figure 2E is shown as an example, and the present application is not limited thereto, and the display device DD can be folded or rolled in various ways.

[0066] Figure 3A is a perspective view of an embodiment of a display device according to the present application. Figure 3B is a cross-sectional view of an embodiment of a display device according to the present application. Figure 3B shows a cross-sectional view defined by the second direction DR2 and the third direction DR3. Hereinafter, the display device DD in an embodiment of the present application will be described with reference to Figure 3A and Figure 3B .

[0067] Referring to Figure 3A and Figure 3B The display device DD in an embodiment of the present application includes a display module DM and a window WM.

[0068] The display module DM can include a protective film PM, a display panel DP, an optical member PZ, and an input sensor TS. The display panel DP, the optical member PZ, and the input sensor TS can be sequentially stacked on the protective film PM.

[0069] The window WM can protect the display module DM from external impact and can provide a display surface to a user. The window WM can include an outer surface exposed to the outside. The display surface IS (referring to Figure 1 ) of the display device DD can correspond to the outer surface of the window WM. A detailed description of the window WM will be given later.

[0070] The display module DM can include an upper surface and a rear surface opposite the upper surface. The upper surface of the display module DM can be a display surface on which an image is displayed. The display module DM can generate an image and display the image toward the window WM in contact with the upper surface of the display module DM.

[0071] The input sensor TS can sense an external input applied from the outside and generate an electrical signal. The input applied from the outside can be provided in different forms. In an embodiment, for example, the external input can include an external input applied when approaching or proximate to (e.g., hovering over) the display device DD at a predetermined distance, and contact by a part of a body such as a user's hand. Furthermore, the external input can have various forms such as force, pressure, and light, and is not limited to one embodiment. The input sensor TS according to the present application can sense an external input applied in a capacitive manner or a pressure sensing manner, and is not limited to one embodiment.

[0072] The optical member PZ optically converts incident light. The optical member PZ can reduce the reflectance of light incident on a front surface, cause re-reflection of light incident on a rear surface, or improve the transmittance of light incident on the rear surface. In an embodiment, for example, the optical member PZ can include at least any one of a polarizing film, an anti-reflection film, a retardation film, and an anti-scattering film.

[0073] Figure 3BThe input sensor TS is shown as being disposed on the optical member PZ, and the optical member PZ is disposed on the display panel DP, but the present application is not limited thereto, and the arrangement of each component can be changed. In an embodiment, for example, the input sensor TS can be disposed on the display panel DP. In this case, the input sensor TS can be directly disposed on the display panel DP through a continuous process with the display panel DP, and the input sensor TS is disposed in a separate panel form to be combined with the display panel DP through an adhesive layer, and the present application is not limited to one embodiment.

[0074] Further, the optical member PZ can be disposed on the input sensor TS. The input sensor TS can be integrated on the display panel DP through a continuous process. In this case, the input sensor TS can also be referred to as an input sensing unit or an input sensing circuit.

[0075] The display panel DP can include a plurality of pixels, and generate an image IM corresponding to input image data (refer to FIG. 1). Figure 1 ) The display panel DP can generate an image, and display the image in a thickness direction DR3 of the display device DD. The display panel DP can display the generated image in an upward direction along which the window WM is disposed.

[0076] The protective film PM can be disposed below the display panel DP to protect the display panel DP. More specifically, the protective film PM can prevent external moisture from penetrating into the display panel DP and absorb external shock. The protective film PM can include a plastic film as a base layer. In an embodiment, the protective film PM can include a plastic film including one of polyether sulfone (“PES”), polyacrylate, polyetherimide (“PEI”), polyethylene naphthalate (“PEN”), polyethylene terephthalate (“PET”), polyphenylene sulfide (“PPS”), polyarylate, polyimide (“PI”), polycarbonate (“PC”), poly(arylene ether sulfone), and any combination thereof.

[0077] The material constituting the protective film PM is not limited to a plastic resin, and can include an organic / inorganic composite material. The protective film PM can include a porous organic layer and an inorganic material filled in the pores of the organic layer. The protective film PM can further include a film functional layer disposed on the plastic film. The film functional layer can include a resin layer. The film functional layer can be provided through a coating method.

[0078] Figure 4A is a plan view of an embodiment of a display panel according to the present application. Figure 4B is an equivalent circuit diagram of an embodiment of a pixel according to the present application.

[0079] As Figure 4AAs shown in the diagram, the display panel DP includes a display area DA and a non-display area NDA in the plan view. The display area DA and the non-display area NDA of the display panel DP correspond to the display device DD (see reference). Figure 1 The display area DD-DA (refer to) Figure 1 ) and non-display area DD-NDA (refer to) Figure 1 The display area DA and non-display area NDA of the display panel DP are not necessarily the same as those of the display device DD (see reference). Figure 1 The display area DD-DA (refer to) Figure 1 ) and non-display area DD-NDA (refer to) Figure 1 The same applies, and can be changed depending on the structure / design of the display panel DP.

[0080] Reference Figure 4A In embodiments of the present invention, the display panel DP includes a base substrate BS, multiple pixels PX, multiple signal lines GL, DL and PL, and multiple display pads DPD. The display area DA and the non-display area NDA can be areas provided by the base substrate BS. The base substrate BS may include an insulating substrate. In embodiments, for example, the base substrate BS may include a glass substrate, a plastic substrate, or any combination thereof.

[0081] Signal lines GL, DL, and PL are connected to pixel PX to transmit electrical signals to pixel PX. As an example, Figure 4A The diagram shows scan lines GL, data lines DL, and power lines PL, which are included in the signal lines of a display panel DP. However, this is shown as an example, and the signal lines GL, DL, and PL may also include at least any of additional power lines, initialization voltage lines, and light emission control lines, and the invention is not limited to one embodiment.

[0082] As an example, Figure 4B The circuit diagram for amplifying the signal of pixel PX, one of a set of pixels, is shown. As an example, Figure 4B The pixel PX connected to the i-th scan line GLi and the i-th emission control line ECLi is shown, where i is a natural number greater than 1.

[0083] A pixel PX may include a light-emitting element EE and a pixel circuit CC. The pixel circuit CC may include a plurality of transistors T1 to T7 and a capacitor CP. In an embodiment, for example, the plurality of transistors T1 to T7 may be provided by a low-temperature polycrystalline silicon (“LTPS”) process or a low-temperature polycrystalline oxide (“LTPO”) process.

[0084] The pixel circuit CC controls the amount of current flowing through the light emitting element EE in response to a data signal. The light emitting element EE can emit light at a predetermined luminance in response to the amount of current supplied from the pixel circuit CC. To this end, the level of the first power ELVDD can be set to be higher than the level of the second power ELVSS. The light emitting element EE can include an organic light emitting element or a quantum dot light emitting element.

[0085] Each of the plurality of transistors T1 to T7 can include an input electrode (or a source electrode), an output electrode (or a drain electrode), and a control electrode (or a gate electrode). In the description, for convenience, either of the input electrode and the output electrode can also be referred to as a first electrode, and the other can also be referred to as a second electrode.

[0086] The first electrode of the first transistor T1 is connected to the first power ELVDD via the fifth transistor T5, and the second electrode of the first transistor T1 is connected to the anode electrode of the light emitting element EE via the sixth transistor T6. The first transistor T1 can also be referred to as a drive transistor in the specification.

[0087] The first transistor T1 controls the amount of current flowing through the light emitting element EE in response to a voltage applied to the control electrode of the first transistor T1.

[0088] The second transistor T2 is connected between the data line DL and the first electrode of the first transistor T1. In addition, the control electrode of the second transistor T2 is connected to the i-th scan line GLi. When the i-th scan signal is supplied to the i-th scan line GLi, the second transistor T2 is turned on to electrically connect the data line DL and the first electrode of the first transistor T1.

[0089] The third transistor T3 is connected between the second electrode of the first transistor T1 and the control electrode of the first transistor T1. The control electrode of the third transistor T3 is connected to the i-th scan line GLi. When the i-th scan signal is supplied to the i-th scan line GLi, the third transistor T3 is turned on to electrically connect the second electrode of the first transistor T1 and the control electrode of the first transistor T1. Thus, when the third transistor T3 is turned on, the first transistor T1 is connected in a diode form.

[0090] The fourth transistor T4 is connected between the node ND and an initialization power generation unit (not shown). In addition, the control electrode of the fourth transistor T4 is connected to the (i-1)-th scan line GLi-1. When the (i-1)-th scan signal is supplied to the (i-1)-th scan line GLi-1, the fourth transistor T4 is turned on to supply the initialization voltage Vint to the node ND.

[0091] The fifth transistor T5 is connected between the power line PL and the first electrode of the first transistor T1. The control electrode of the fifth transistor T5 is connected to the i-th light emitting control line ECLi.

[0092] The sixth transistor T6 is connected between the second electrode of the first transistor T1 and the anode electrode of the light emitting element EE. Further, the control electrode of the sixth transistor T6 is connected to the i-th light emitting control line ECLi.

[0093] The seventh transistor T7 is connected between an initialization power generation unit (not shown) and the anode electrode of the light emitting element EE. Further, the control electrode of the seventh transistor T7 is connected to the i+1-th scan line GLi+1. When the i+1-th scan signal is supplied to the i+1-th scan line GLi+1, the seventh transistor T7 is turned on to supply the initialization voltage Vint to the anode electrode of the light emitting element EE.

[0094] The seventh transistor T7 can improve the black display capability of the pixel PX. Specifically, when the seventh transistor T7 is turned on, a parasitic capacitor (not shown) of the light emitting element EE is discharged. Then, when black luminance is achieved, the light emitting element EE does not emit light due to the leakage current from the first transistor T1, and thus, the black display capability can be improved.

[0095] In addition, Figure 4B The control electrode of the seventh transistor T7 is shown as being connected to the i+1-th scan line GLi+1, but the present application is not limited thereto. In another embodiment of the present application, the control electrode of the seventh transistor T7 can be connected to the i-th scan line GLi or the i-1-th scan line GLi-1.

[0096] The capacitor CP is provided between the power line PL and the node ND. The capacitor CP stores a voltage corresponding to the data signal. When the fifth transistor T5 and the sixth transistor T6 are turned on according to the voltage stored in the capacitor CP, the amount of current flowing through the first transistor T1 can be determined.

[0097] In the present application, the equivalent circuit of the pixel PX is not limited to Figure 4B the equivalent circuit shown in FIG. 1. In another embodiment of the present application, the pixel PX can be implemented in various forms to emit light of the light emitting element EE. In Figure 4B the present application, the pixel circuit CC is shown as including only p-channel (+) metal oxide semiconductor ("PMOS") transistors, but the present application is not limited thereto. In another embodiment of the present application, the pixel circuit CC can include only n-channel (-) metal oxide semiconductor ("NMOS") transistors. In another embodiment of the present application, the pixel circuit CC can include a combination of NMOS and PMOS transistors.

[0098] The light emitting pixel can have the same configuration as the pixel PX described above. That is, the light emitting pixel can include the light emitting element EE and the pixel circuit CC.

[0099] The non-light-emitting pixel can be defined as not having any of the components included in the light-emitting element EE and the pixel circuit CC. In an embodiment, in the non-light-emitting pixel, for example, any of the electrodes included in the light-emitting element EE in the configuration of the pixel PX can be omitted, or any of the transistors T1 to T7 can be omitted. Thus, the non-light-emitting pixel can be defined as having a configuration that substantially does not generate light.

[0100] Referring back to Figure 4A A power pattern VDD is provided in the non-display area NDA. In the illustrated embodiment, the power pattern VDD is connected to the plurality of power lines PL. Thus, the display panel DP includes the power pattern VDD, and thus the same first power signal can be supplied to the plurality of pixels PX.

[0101] The display pad DPD can include a first pad P1 and a second pad P2. The first pad P1 can be provided in plurality and can be connected to the data lines DL, respectively. The second pad P2 can be connected to the power pattern VDD to be electrically connected to the power lines PL. The display panel DP can supply an electrical signal supplied to the pixels PX from the outside through the display pad DPD. The display pad DPD can include pads for receiving other electrical signals in addition to the first pad P1 and the second pad P2, and the present application is not limited to one embodiment.

[0102] Figure 5 is a cross-sectional view of an embodiment of a window according to the present application. Hereinafter, the embodiment of the window described will be described with reference to Figure 6 to Figure 9 The embodiment of the window described can correspond to the configuration to be described in Figure 5 , and a repeated description will be omitted.

[0103] In the illustrated embodiment, the window WM includes a base layer BSL, a protective layer HCL, a first inorganic layer UIL, and a second inorganic layer LIL.

[0104] The base layer BSL can include a transparent polymeric material. In an embodiment, for example, the base layer BSL can include polyimide, polyacrylate, polymethyl methacrylate ("PMMA"), polycarbonate ("PC"), polyethylene naphthalate ("PEN"), polyvinylidene chloride, polyvinylidene fluoride ("PVDF"), polystyrene, ethylene-vinyl alcohol copolymer, or any combination thereof. Preferably, the base layer BSL includes polyimide, and thus transparency, strength, and surface hardness can be increased.

[0105] In the illustrated embodiment, the protective layer HCL is provided on the base layer BSL. The protective layer HCL can be provided between the upper surface of the base layer BSL and the first inorganic layer UIL. The protective layer HCL is a layer having a function of increasing the surface hardness of the window WM.

[0106] The protective layer HCL can include any one of an organic compound, an inorganic compound, and an organic-inorganic composite compound. In an embodiment, the protective layer HCL can include, for example, an acrylic-based compound, an epoxy-based compound, or any combination thereof. In an alternative embodiment, the protective layer HCL can include any one of an inorganic compound of silicon nitride, silicon oxynitride, silicon oxide, zirconium oxide, aluminum oxide, tantalum oxide, niobium oxide, and glass beads.

[0107] The protective layer HCL can be provided by a wet coating method. The protective layer HCL can be provided by applying any one of an organic compound coating solution and an organic-inorganic compound coating solution to the base layer BSL and then curing the coating solution.

[0108] When the protective layer HCL includes an inorganic compound coating solution, the protective layer HCL can be provided by a process of depositing the inorganic compound coating solution on the base layer BSL. In the illustrated embodiment, when the protective layer HCL includes an inorganic compound, the thickness H-T of the protective layer HCL along the third direction DR3 can be about 500 nanometers (nm) to about 1 micrometer (µm). When the protective layer HCL includes an organic compound, the thickness H-T of the protective layer HCL along the third direction DR3 can be about 3 µm to about 10 µm.

[0109] Although not shown, the protective layer HCL can be provided as a plurality of layers each including any one of an organic compound, an inorganic compound, and an organic-inorganic composite compound. Further, the protective layer HCL can be provided between the back surface of the base layer BSL and the second inorganic layer LIL, but is not limited to one embodiment.

[0110] The first inorganic layer UIL is provided on the upper surface of the base layer BSL. In the illustrated embodiment, the first inorganic layer UIL is provided on the protective layer HCL and is spaced apart from the base layer BSL with the protective layer HCL therebetween. The second inorganic layer LIL can be provided below the base layer BSL to contact the back surface of the base layer BSL.

[0111] The first inorganic layer UIL and the second inorganic layer LIL can include an inorganic compound. In an embodiment, for example, the first inorganic layer UIL and the second inorganic layer LIL can include any one of silicon nitride, silicon oxynitride, silicon oxide, zirconium oxide, and aluminum oxide. The method for forming the inorganic layers UIL and LIL can be deposition by a sputtering process, but is not limited to one embodiment.

[0112] The window WM according to the present application includes the first inorganic layer UIL and the second inorganic layer LIL which cover the base layer BSL and the protective layer HCL, and thus can enhance the function of preventing moisture penetration and can stably maintain physical properties such as modulus and yield point under high temperature / high humidity conditions. In addition, the inclusion of the first inorganic layer UIL and the second inorganic layer LIL can improve surface hardness and pressing properties such as pen pressing and pen dropping, and according to the display device DD including a folding feature, can reduce a crease of the window WM overlapping a folding area.

[0113] Figure 6 is a cross-sectional view of an embodiment of a window according to the present application. The same / similar reference numerals are applied to configurations the same / similar to those described in Figure 5

[0114] Referring to Figure 6 , the window WM-A includes the base layer BSL, the protective layer HCL, the first inorganic layer UIL-A, and the second inorganic layer LIL.

[0115] The protective layer HCL is disposed on the upper surface of the base layer BSL. The first inorganic layer UIL-A is disposed on the protective layer HCL. The second inorganic layer LIL can be disposed below the base layer BSL to contact the rear surface of the base layer BSL.

[0116] In the illustrated embodiment, the first inorganic layer UIL-A can include a plurality of layers U1, U2…Un, where n is a natural number greater than 2. The total thickness of the first inorganic layer UIL-A (i.e., the sum of the thicknesses of the plurality of layers U1, U2…Un in the third direction DR3) can be about 10 nm or more. Each of the plurality of layers U1, U2…Un can include an inorganic compound. In embodiments, for example, each of the plurality of layers U1, U2…Un can include any one of silicon nitride, silicon oxynitride, silicon oxide, zirconium oxide, and aluminum oxide. In the illustrated embodiment, the first inorganic layer UIL-A disposed on the outermost side is stacked in the third direction DR3 and includes a plurality of layers U1, U2…Un including an inorganic material, and thus can enhance the function of preventing moisture penetration.

[0117] Figure 7 is a cross-sectional view of an embodiment of a window according to the present application. The same / similar reference numerals are applied to configurations the same / similar to those described in Figure 5

[0118] Referring to Figure 7 , the window WM-B includes the base layer BSL, the protective layer HCL, the first inorganic layer UIL, and the second inorganic layer LIL. In addition, in the illustrated embodiment, the window WM-B can further include a protective film PTL and an adhesive layer AHL.​​

[0119] The protective layer HCL is disposed on the upper surface of the base layer BSL. The first inorganic layer UIL is disposed on the protective layer HCL. The second inorganic layer LIL can be disposed below the base layer BSL to contact the rear surface of the base layer BSL.

[0120] In the illustrated embodiment, the protective film PTL can be disposed on the upper portion of the first inorganic layer UIL. The adhesive layer AHL can be disposed between the first inorganic layer UIL and the protective film PTL to bond the first inorganic layer UIL and the protective film PTL.

[0121] The protective film PTL can be disposed in a form in which a base layer including PET is mixed with a material identical to that of the protective layer HCL and an anti-fingerprint material. In the embodiment, for example, the anti-fingerprint material can include at least any one of metal oxides such as titanium oxide, silicon-based compounds, and fluorine-based compounds, but the anti-fingerprint material is not limited thereto, as long as it is a conventional material known to those skilled in the art.

[0122] The adhesive layer AHL can be a pressure sensitive adhesive ("PSA"), an optically clear adhesive ("OCA"), or an optically clear resin ("OCR"). Furthermore, the adhesive layer AHL can include a photocurable adhesive material or a thermosetting adhesive material, and the material is not limited thereto.

[0123] In the illustrated embodiment, the bonding strength between the first inorganic layer UIL and the adhesive layer AHL can be weaker than the bonding strength between the protective film PTL and the adhesive layer AHL. Accordingly, the protective film PTL, which is disposed in a film form, can be separated from / attached to the first inorganic layer UIL and replaced.

[0124] Figure 8A is a cross-sectional view of an embodiment of a window according to the present application. Figure 8B is a cross-sectional view of an embodiment of a window according to the present application. The same / similar reference numerals are applied to the same / similar configurations described in Figure 5 and a repetitive description is omitted.

[0125] Referring to Figure 8A , the window WM-C includes the base layer BSL, the protective layer HCL, the first inorganic layer UIL, and the second inorganic layer LIL. Furthermore, in the illustrated embodiment, the window WM-C can further include the anti-fingerprint layer AFL and the primer layer AHP.

[0126] The protective layer HCL is disposed on the upper surface of the base layer BSL. The first inorganic layer UIL is disposed on the protective layer HCL. The second inorganic layer LIL can be disposed below the base layer BSL to contact the rear surface of the base layer BSL.

[0127] In the illustrated embodiment, the anti-fingerprint layer AFL can be provided on the upper portion of the first inorganic layer UIL. The primer layer AHP is provided between the first inorganic layer UIL and the anti-fingerprint layer AFL, and thus can increase the bonding strength between the first inorganic layer UIL and the anti-fingerprint layer AFL.

[0128] Unlike the protective film PTL described in Figure 7 The anti-fingerprint layer AFL according to the present application can be provided by coating on the first inorganic layer UIL. The anti-fingerprint layer AFL can be provided by applying a solution including an anti-fingerprint material. The coating method can be wet coating or dry coating, and is not limited thereto.

[0129] The primer layer AHP can be an auxiliary adhesive layer for increasing the bonding strength between the anti-fingerprint layer AFL and the first inorganic layer UIL. In an embodiment, the primer layer AHP can include a silane-based coupling agent and isocyanate.

[0130] Referring to Figure 8B , the window WM-D can include the base layer BSL, the protective layer HCL, the first inorganic layer UIL, the second inorganic layer LIL, the anti-fingerprint layer AFL, and the primer layer AHP. Further, in the illustrated embodiment, the window WM-D can further include the shock absorbing layer IPL and the adhesive layer AHL.

[0131] The base layer BSL, the protective layer HCL, the first inorganic layer UIL, the second inorganic layer LIL, the anti-fingerprint layer AFL, and the primer layer AHP of the window WM-D can respectively correspond to the base layer BSL, the protective layer HCL, the first inorganic layer UIL, the second inorganic layer LIL, the anti-fingerprint layer AFL, and the primer layer AHP of the window WM-C described with reference to Figure 8A .

[0132] In the illustrated embodiment, the shock absorbing layer IPL is provided on the rear surface of the base layer BSL. The shock absorbing layer IPL can be spaced apart from the base layer BSL with the second inorganic layer LIL therebetween.

[0133] In an embodiment, the shock absorbing layer IPL can include any one of PET, polyurethane (e.g., thermoplastic polyurethane elastomer ("TPU")), silicone-based polymer, and rubber. The shock absorbing layer IPL can function as a stress buffer for alleviating an impact applied to the base layer BSL.

[0134] The adhesive layer AHL can be provided between the second inorganic layer LIL and the shock absorbing layer IPL to bond the second inorganic layer LIL and the shock absorbing layer IPL.

[0135] In an embodiment, for example, the adhesive layer AHL can be a PSA, an OCA, or an OCR. In addition, the adhesive layer AHL can include a photocurable adhesive material or a thermosetting adhesive material, and the material is not limited thereto.

[0136] Figure 9 is a cross-sectional view of an embodiment of a window according to the present application. The same / similar reference numerals are applied to configurations identical / similar to those described in Figure 5 described in the above-described configuration, and a repeated description is omitted.

[0137] Referring to Figure 9 , the window WM-E includes a base layer BSL, a protective layer HCL, a first inorganic layer UIL, and a second inorganic layer LIL. In addition, in the illustrated embodiment, the window WM-E can further include an anti-fingerprint layer WCA and a primer layer AHP.

[0138] The protective layer HCL is disposed on the upper surface of the base layer BSL. The first inorganic layer UIL is disposed on the protective layer HCL. The second inorganic layer LIL can be disposed below the base layer BSL to contact the rear surface of the base layer BSL.

[0139] In the illustrated embodiment, the anti-fingerprint layer WCA can be disposed on the upper portion of the first inorganic layer UIL. The primer layer AHP is disposed between the first inorganic layer UIL and the anti-fingerprint layer WCA to increase the bonding strength between the first inorganic layer UIL and the anti-fingerprint layer WCA.

[0140] The anti-fingerprint layer WCA of the present application can be provided by applying a solution including an anti-fingerprint material. As an embodiment of a wet coating method, the coating method can be spray coating applicable to forming the anti-fingerprint layer WCA on the primer layer AHP. When the anti-fingerprint layer WCA is provided by the wet coating method, the protective layer HCL of the illustrated embodiment can include an inorganic compound.

[0141] The primer layer AHP can be an auxiliary adhesive layer for increasing the bonding strength between the anti-fingerprint layer WCA and the first inorganic layer UIL. In an embodiment, the primer layer AHP can include a silane-based coupling agent and an isocyanate.

[0142] The shock absorbing layer IPL is disposed on the rear surface of the base layer BSL. The shock absorbing layer IPL can be spaced apart from the base layer BSL, and the second inorganic layer LIL is between them.

[0143] The adhesive layer AHL can be disposed between the second inorganic layer LIL and the shock absorbing layer IPL to bond the second inorganic layer LIL and the shock absorbing layer IPL.

[0144] Figure 10 is a cross-sectional view of an embodiment of a window according to the present application.Figure 11A is a cross-sectional view of an embodiment of a window according to the present application. Figure 11B is a cross-sectional view of an embodiment of a window according to the present application. The same / similar reference numerals are applied to the same / similar configurations described in Figure 5 and repetitive descriptions are omitted.

[0145] Referring to Figure 10 , a window WM-F according to the present application includes a base layer BSL, a protective layer HAL, a first inorganic layer UIL, and a second inorganic layer LIL.

[0146] In the illustrated embodiment, the base layer BSL can be covered by the inorganic layers UIL and LIL. In an embodiment, for example, an upper surface of the base layer BSL can be covered by the first inorganic layer UIL, and a rear surface of the base layer BSL can be covered by the second inorganic layer LIL. Accordingly, the upper surface and the rear surface of the base layer BSL can contact the inorganic layers UIL and LIL. In the illustrated embodiment, the first inorganic layer UIL can have a thickness of about 50 nm to about 150 nm.

[0147] The first inorganic layer UIL can include a plurality of layers U1, U2…Un as described in Figure 6 . Each of the plurality of layers U1, U2…Un can include an inorganic compound. In an embodiment, for example, each of the plurality of layers U1, U2…Un can include any one of silicon nitride, silicon oxynitride, silicon oxide, zirconium oxide, and aluminum oxide.

[0148] The protective layer HAL is disposed on an upper portion of the first inorganic layer UIL. A primer layer AHP can be disposed between the protective layer HAL and the first inorganic layer UIL to increase a bonding strength between the protective layer HAL and the first inorganic layer UIL. In the illustrated embodiment, when the protective layer HAL is exposed at the top, the protective layer HAL can protect the base layer BSL from external impact and have an anti-fingerprint property.

[0149] In the illustrated embodiment, an organic material that increases a surface hardness of the protective layer HAL and a material having an anti-fingerprint property can be mixed to be disposed on the primer layer AHP. The material having the anti-fingerprint property can include at least any one of metal oxides such as titanium oxide, silicon-based compounds, and fluorine-based compounds.

[0150] In the illustrated embodiment, when the protective layer HAL in which the material that increases the surface hardness and the material having the anti-fingerprint property are mixed is disposed on the outermost side, a thinner window WM-F can be provided.

[0151] Referring to Figure 11AThe window WM-G according to the present application includes a base layer BSL, a protective layer IHC, a first inorganic layer UIL, and a second inorganic layer LIL. In addition, in the illustrated embodiment, the window WM-G can further include an anti-fingerprint layer WCA, a primer layer AHP, a shock absorbing layer IPL, and an adhesive layer AHL.

[0152] In the illustrated embodiment, the base layer BSL can be covered by the inorganic layers UIL and LIL. In an embodiment, for example, the upper surface of the base layer BSL can be covered by the first inorganic layer UIL, and the rear surface of the base layer BSL can be covered by the second inorganic layer LIL. Accordingly, the upper surface and the rear surface of the base layer BSL can contact the inorganic layers UIL and LIL. In the illustrated embodiment, the first inorganic layer UIL can have a thickness of about 50 nm to about 150 nm.

[0153] The first inorganic layer UIL can include a plurality of layers U1, U2…Un as described in the first inorganic layer UIL-A. Figure 6 Each of the plurality of layers U1, U2…Un can include an inorganic compound. In an embodiment, for example, each of the plurality of layers U1, U2…Un can include any one of silicon nitride, silicon oxynitride, silicon oxide, zirconium oxide, and aluminum oxide.

[0154] The protective layer IHC is disposed on an upper portion of the first inorganic layer UIL. In the illustrated embodiment, the protective layer IHC can include an inorganic compound. In an embodiment, for example, the protective layer IHC can include any one of inorganic compounds of silicon nitride, silicon oxynitride, silicon oxide, zirconium oxide, aluminum oxide, tantalum oxide, niobium oxide, and glass beads.

[0155] The anti-fingerprint layer WCA can be disposed on an upper portion of the protective layer IHC. The primer layer AHP is disposed between the protective layer IHC and the anti-fingerprint layer WCA to increase the bonding strength between the protective layer IHC and the anti-fingerprint layer WCA.

[0156] The anti-fingerprint layer WCA can be provided by applying a solution including an anti-fingerprint material. As an embodiment of wet coating, the coating method can be spray coating applicable to forming the anti-fingerprint layer WCA on the primer layer AHP. When the anti-fingerprint layer WCA is provided by the wet coating method, the protective layer HCL of the illustrated embodiment can include an inorganic compound.

[0157] The shock absorbing layer IPL is disposed on the rear surface of the base layer BSL. The shock absorbing layer IPL can be spaced apart from the base layer BSL with the second inorganic layer LIL therebetween.

[0158]

[0159]

[0160] In Table 1, "SAL" denotes a shock absorbing layer, "IL1" denotes a first inorganic layer, "IL2" denotes a second inorganic layer, "PL" denotes a protective layer, and "AL" denotes an anti-fingerprint layer. Referring to Table 1, 1 in Example 1 (Ex1 in Table 1) is data of an example having the same stack structure as that of the window WM-F shown in Figure 10 Example 1, 2 is different from 1 in Example 1 in the thickness of the inorganic layer (TH in Table 1), and 3 in Example 1 is different from 1 in Example 1 in the method for forming the anti-fingerprint layer. As shown in 1 and 2 of Example 1, when the thickness of the first inorganic layer included in the window is about 150 nm or less, the water vapor transmission rate ("WVTR") can be less than that in the case where the thickness is 20 nm or less. Thus, the moisture introduced from the outside can be effectively blocked.

[0161] As shown in 1 and 3 of Example 1, when the anti-fingerprint layer is an anti-fingerprint layer (HCAF) including an organic material that increases the surface hardness and a material having anti-fingerprint properties, peeling can be reduced compared to an anti-fingerprint layer (Dry AF) provided by a dry coating method. Peeling can be distinguished by determining when the coated layer is peeled in the case where abrasion is applied while the coated layer is exposed to the outside for the same period of time. Thus, when the anti-fingerprint layer including the organic material and the material having anti-fingerprint properties (HCAF) is included, a window having improved durability can be provided.

[0162] 1 in Example 2 (Ex2 in Table 1) is data of an example having the same stack structure as that of the window WM-G shown in Figure 11A Example 2, 2 is different from 1 in Example 2 in the thickness of the inorganic layer, and 3 in Example 2 is different from 1 in Example 2 in the method for forming the anti-fingerprint layer.

[0163] As shown in 1 and 2 of Example 2, when the thickness of the first inorganic layer included in the window is about 150 nm or less, the water vapor transmission rate ("WVTR") can be less than that in the case where the thickness is 20 nm or less. Thus, the moisture introduced from the outside can be effectively blocked.

[0164] As shown in 1 and 3 of Example 2, when the anti-fingerprint layer is provided by a wet coating method (Wet AF), peeling can be reduced compared to an anti-fingerprint layer provided by a dry coating method. Peeling can be distinguished by determining when the coated layer is peeled in the case where abrasion is applied while the coated layer is exposed to the outside for the same period of time. Thus, when the anti-fingerprint layer is provided by a wet coating method, a window having improved durability can be provided.

[0165] Referring to Figure 11BThe window WM-H according to the present application includes a base layer BSL, a protective layer OHC, a first inorganic layer UIL, and a second inorganic layer LIL. In addition, in the illustrated embodiment, the window WM-H can further include an anti-fingerprint layer HFL, a primer layer AHP, a shock absorbing layer IPL, and an adhesive layer AHL.

[0166] In the illustrated embodiment, the base layer BSL can be covered by the inorganic layers UIL and LIL. In an embodiment, for example, the upper surface of the base layer BSL can be covered by the first inorganic layer UIL, and the rear surface of the base layer BSL can be covered by the second inorganic layer LIL. Accordingly, the upper surface and the rear surface of the base layer BSL can contact the inorganic layers UIL and LIL. In the illustrated embodiment, the first inorganic layer UIL can have a thickness of about 10 nm to about 25 nm.

[0167] The first inorganic layer UIL can include a plurality of layers U1, U2…Un as described in the first inorganic layer UIL-A. Figure 6 Each of the plurality of layers U1, U2…Un can include an inorganic compound. In an embodiment, for example, each of the plurality of layers U1, U2…Un can include any one of silicon nitride, silicon oxynitride, silicon oxide, zirconium oxide, and aluminum oxide.

[0168] The protective layer OHC is disposed on an upper portion of the first inorganic layer UIL. In the illustrated embodiment, the protective layer OHC can include an organic compound. In an embodiment, the protective layer OHC can include an acrylic-based compound, an epoxy compound, or any combination thereof.

[0169] The anti-fingerprint layer HFL can be disposed on an upper portion of the protective layer OHC. The primer layer AHP is disposed between the protective layer OHC and the anti-fingerprint layer HFL to improve the bonding strength between the protective layer OHC and the anti-fingerprint layer HFL.

[0170] In the illustrated embodiment, a material that increases the surface hardness of the anti-fingerprint layer HFL and a material having anti-fingerprint properties can be mixed to be disposed on the primer layer AHP.

[0171] The windows WM-G and WM-H according to the illustrated embodiments, including the anti-fingerprint layers WCA and HFL disposed on upper portions of the protective layers OHC and IHC, exposed to the outermost surface to increase the surface hardness, and having anti-fingerprint properties, can improve press properties such as pen press and pen drop. In addition, since the base layer BSL is covered by the inorganic layers UIL and LIL including inorganic compounds, the function of preventing moisture penetration can be improved, and physical properties such as modulus and yield point can be stably maintained under high temperature / high humidity conditions.

[0172] The window according to the present application includes an inorganic layer covering a base layer and a protective layer, and thus can improve a function of preventing moisture penetration and stably maintain physical properties such as modulus and yield point under high temperature / high humidity conditions. In addition, surface hardness and press characteristics such as pen press and pen drop can be improved, and according to characteristics of a display device including a folding feature, a crease of a window overlapping a folding area can be reduced.

[0173] Although the present application has been described with reference to the preferred embodiments thereof, it is to be understood that a person skilled in the art can make various changes in form and details without departing from the spirit and scope of the present application.

[0174] Accordingly, the technical scope of the present application is not intended to be limited to what is set forth in the detailed description of the specification but includes all modifications and equivalents of the concepts described in the claims attached hereto.

Claims

1. A display device comprising: a display panel; and a window disposed on the display panel, the window comprising: a base layer including a first surface and a second surface opposite to each other; a first inorganic layer disposed on the first surface of the base layer; a second inorganic layer in contact with the second surface of the base layer; and a protective layer disposed between the base layer and the first inorganic layer, or disposed on a first portion of the first inorganic layer opposite to a second portion of the first inorganic layer facing the base layer, wherein the first inorganic layer and the second inorganic layer each have a thickness of 50 nm to 150 nm. 2.The display device of claim 1, wherein: the protective layer is disposed between the base layer and the first inorganic layer; and the first inorganic layer includes a plurality of layers. the protective layer is disposed between the base layer and the first inorganic layer, and 3. The display device according to claim 1, wherein the display device further comprises a protective film disposed on the first portion of the first inorganic layer, and an adhesive layer bonding the first inorganic layer and the protective film. the protective layer is disposed between the base layer and the first inorganic layer, and 4. The display device according to claim 1, wherein the display device further comprises an anti-fingerprint layer disposed on the first portion of the first inorganic layer, and a primer layer increasing a bonding strength between the anti-fingerprint layer and the first inorganic layer. the first portion of the second inorganic layer is opposite to a second portion of the second inorganic layer facing the base layer. 5.The display device according to claim 4, further comprising a shock absorbing layer provided on the first portion of the second inorganic layer, and an adhesive layer that bonds the second inorganic layer and the shock absorbing layer, wherein, the anti-fingerprint layer is provided by a coating solution.

6. The display device according to claim 4, wherein the protective layer is disposed on the first portion of the first inorganic layer.

7. The display device according to claim 1, wherein 8.The display device of claim 7, further comprising a primer layer increasing a bonding strength between the protective layer and the first inorganic layer. the first portion of the second inorganic layer is opposite to a second portion of the second inorganic layer facing the base layer. 9.The display device according to claim 7, further comprising a shock absorbing layer disposed on a first portion of the second inorganic layer, and an adhesive layer that bonds the second inorganic layer and the shock absorbing layer, wherein, the protective layer includes an organic material increasing a surface hardness and an anti-fingerprint material.

10. The display device of claim 7, wherein, the first inorganic layer includes a plurality of layers.

11. The display device according to claim 7, wherein the protective layer is disposed on the first portion of the first inorganic layer and in contact with the first inorganic layer.

12. The display device of claim 1, wherein, the protective layer includes an inorganic material, and 13. The display device of claim 12, wherein, the display device further comprises: an anti-fingerprint layer disposed on the protective layer; a primer layer increasing a bonding strength between the anti-fingerprint layer and the protective layer; a shock absorbing layer disposed on a first portion of the second inorganic layer, wherein the first portion of the second inorganic layer is opposite to a second portion of the second inorganic layer facing the base layer; and an adhesive layer bonding the second inorganic layer and the shock absorbing layer. the anti-fingerprint layer is provided by a coating solution.

14. The display device of claim 13, wherein, the protective layer includes an organic material, and 15. The display device of claim 12, wherein, the display device further comprises an anti-fingerprint layer disposed on the protective layer, and a primer layer increasing a bonding strength between the anti-fingerprint layer and the protective layer. the anti-fingerprint layer includes an anti-fingerprint material.

16. The display device of claim 15, wherein, the first inorganic layer includes a plurality of layers.

17. The display device of claim 12, wherein, the first inorganic layer and the second inorganic layer include any one of silicon nitride, silicon oxynitride, and silicon oxide.

18. The display device of claim 1, wherein, ​ 19. The display device of claim 1, wherein, The display device is folded with respect to a folding axis extending in one direction.

Images