Display device and manufacturing method thereof

Abstract

A display device includes a display area and a peripheral area disposed adjacent to the display area, and includes: a base layer; a display element layer disposed on the base layer and including a light emitting element overlapping the display area on a plane; a color filter disposed on the display element layer; a refractive layer disposed on the color filter; and a protective layer disposed on the refractive layer, the refractive layer including: a cover layer covering the color filter; and a protruding pattern disposed between the cover layer and the protective layer and forming an integral shape with the cover layer, one end of the protective layer being aligned with a boundary of the display area and the peripheral area on a plane.

Description

Technical Field

[0001] The present invention relates to a display device and a method for manufacturing the same, and more particularly, to a display device with improved durability and reliability and a method for manufacturing the display device with improved process difficulty. Background Art

[0002] Display devices such as televisions, monitors, smartphones, and tablet computers that provide images to users include display panels that display the images. Various display panels are being developed, including liquid crystal display panels, organic light emitting display panels, electrowetting display panels, and electrophoretic display panels.

[0003] To improve the reliability of display panels, research is underway into patterning methods for light-emitting elements. Recently, research is underway into high-resolution display devices that incorporate light-emitting materials that are publicly provided using open masks. In particular, there is a need for solutions to improve the durability of ultra-high-resolution display devices that incorporate microlens arrays (MLAs). Summary of the Invention

[0004] An object of the present invention is to provide a display device that achieves high resolution while improving durability and reliability, and a method for manufacturing the display device that improves the difficulty of the manufacturing process.

[0005] A display device according to an embodiment of the present invention includes a display area and a peripheral area arranged adjacent to the display area, and includes: a base layer; a display element layer arranged on the base layer and including a light-emitting element overlapping with the display area in a plane; a color filter arranged on the display element layer; a refractive layer arranged on the color filter; and a protective layer arranged on the refractive layer, the refractive layer including: a covering layer covering the color filter; and a protruding pattern arranged between the covering layer and the protective layer and forming an integral shape with the covering layer, one end of the protective layer being aligned with a boundary between the display area and the peripheral area in a plane.

[0006] The display device of an embodiment may further include: a filling layer disposed on the base layer and overlapping the protection layer in the first direction.

[0007] The filling layer may be in contact with the one end of the protection layer.

[0008] The thickness of the protective layer can be 20 μm or more and 500 μm or less.

[0009] The display device of one embodiment can further include a window disposed on the protective layer, and a sealing member disposed between the base layer and the window, and the protective layer can be spaced apart from the sealing member in the first direction.

[0010] The protruding pattern can overlap with the light emitting element in a plan view.

[0011] The light emitting element can be provided in a plurality of the light emitting elements, and the protruding pattern can be provided in a plurality of the protruding patterns.

[0012] The refractive layer can have a refractive index of 1.6 or more.

[0013] The refractive layer can include an acrylic resin.

[0014] The display region can include a first display region and a second display region spaced apart from the first display region in a plan view, and the first display region and the second display region can each independently include a rectangular shape or a circular shape.

[0015] The light emitting element can include a first electrode, a light emitting layer disposed on the first electrode, and a second electrode disposed on the light emitting layer.

[0016] A display device according to one embodiment includes a display region and a peripheral region disposed adjacent to the display region, and includes a base layer, a display element layer disposed on the base layer and including a light emitting element overlapping with the display region in a plan view, a color filter disposed on the display element layer, a refractive layer disposed on the color filter, and a protective layer disposed on the refractive layer, the refractive layer including a cover layer covering the color filter and a protruding pattern disposed between the cover layer and the protective layer and having an integral shape with the cover layer, the protective layer including a first compound including at least one of a polysilsesquioxane-based compound, a polyurethane-based compound, a polycarbonate-based compound, and a polyethyleneterephthalate-based compound, a second compound including a surfactant including at least one of a fluorine-containing compound and a silicon-containing compound, and a third compound including an epoxy-based compound, the weight of the second compound being 0.05 % or more and less than 0.2 % of the sum of the weight of the first compound, the weight of the second compound, and the weight of the third compound.

[0017] One end of the protective layer can be aligned with a boundary of the display area and the peripheral area on a plane.

[0018] The first compound can include at least one of first to seventh polysilsesquioxane compounds represented by Chemical Formula 1 to Chemical Formula 7, respectively:

[0019] [Chemical Formula 1]

[0020]

[0021] [Chemical Formula 2]

[0022]

[0023] [Chemical Formula 3]

[0024]

[0025] [Chemical Formula 4]

[0026]

[0027] [Chemical Formula 5]

[0028]

[0029] [Chemical Formula 6]

[0030]

[0031] [Chemical Formula 7]

[0032]

[0033] In the Chemical Formula 1 to the Chemical Formula 7, X can be R 41 or [(SiO 3 / 2 R 42 ) 4+2n O], Y1 and Y2 can be independently O, NR 51 or [(SiO 3 / 2 R 52 ) 4+2n' O], R 11 , R 12 , R 21 to R 24 , R 31 to R 34 , R a1 , R a2 , R b1 to R b5 , R c1 to R c4 , R 41, R 42 , R 51 , and R 52 may be each independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted amine group, a substituted or unsubstituted epoxy group, a nitro group, a nitrile group, a mercapto group, an isocyanate group, a substituted or unsubstituted alkyl group having a carbon number of 1 to 20, a substituted or unsubstituted alkenyl group having a carbon number of 2 to 20, a substituted or unsubstituted alkoxy group having a carbon number of 1 to 40, a substituted or unsubstituted aliphatic heterocyclic group having a ring-constituting carbon number of 2 to 30, a substituted or unsubstituted aryl group having a ring-constituting carbon number of 6 to 30, a substituted or unsubstituted heteroaryl group having a ring-constituting carbon number of 2 to 30, a substituted or unsubstituted aryloxy group having a ring-constituting carbon number of 3 to 30, or a substituted or unsubstituted arylmercapto group having a ring-constituting carbon number of 3 to 30, n and n' can be each independently an integer of 1 to 20, a can be an integer of 1 to 100,000, b, b', c, and c' can be each independently an integer of 1 to 100.

[0034] The epoxy-based compound can include a viscosity modifier.

[0035] A display device manufacturing method according to an embodiment of the present application includes: a step of providing an initial display device including a display area and a peripheral area disposed adjacent to the display area, and including: a base layer; a display element layer disposed on the base layer, and including a light emitting element overlapping the display area on a plane; and a color filter disposed on the display element layer; a step of forming an initial refractive layer on the color filter; a step of etching a portion of the initial refractive layer to form a refractive layer including: a cover layer covering the color filter; and a convex pattern disposed between the cover layer and a protection layer, and having a shape integrated with the cover layer, one end of the protection layer being aligned with a boundary between the display area and the peripheral area on a plane; and a step of forming the protection layer on the refractive layer.

[0036] The step of forming the protective layer can include a step of forming an initial protective layer including a first compound, a second compound, and a third compound by an inkjet coating method, and a step of curing the initial protective layer, the first compound including at least one of a polysilsesquioxane-based compound, a polyurethane-based compound, a polycarbonate-based compound, and a polyethylene terephthalate-based compound, the second compound including a surfactant including at least one of a fluorine compound and a silicon compound, the third compound including an epoxy-based compound, the weight of the second compound being 0.05% or more and less than 0.2% of the sum of the weight of the first compound, the weight of the second compound, and the weight of the third compound.

[0037] The initial protective layer can have a viscosity of 1 cP or more and 30 cP or less at 20 degrees Celsius.

[0038] The initial protective layer can have a Young's modulus of 1 Gpa or more and 10 Gpa or less at 25 degrees Celsius.

[0039] The weight of the second compound can be 0.05% or more and 0.1% or less of the sum of the weight of the first compound, the weight of the second compound, and the weight of the third compound.

[0040] A display device according to an embodiment of the present application, a planarization layer disposed on a microlens array does not include a dam (DAM), thereby improving productivity. A display device manufacturing method according to an embodiment of the present application, a dam (DAM) is not required in a process of forming a planarization layer disposed on a microlens array, thereby improving difficulty of a display device manufacturing process, and improving productivity. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 FIG. 1 is an exploded perspective view illustrating an electronic device according to an embodiment of the present application.

[0042] Figure 2 FIG. 2 is a perspective view illustrating a display device according to an embodiment of the present application.

[0043] Figure 3 FIG. 3 is a sectional view taken along line I-I' of FIG. 2. Figure 2

[0044] Figure 4 FIG. 4 is a partial enlarged view of the sectional view illustrated in FIG. 3. Figure 3

[0045] ​​Figure 5a and Figure 5b are flowcharts showing a display device manufacturing method according to an embodiment of the present application.

[0046] Figures 6 to 11 are cross-sectional views of a part of steps of a display device manufacturing method according to an embodiment of the present application. DETAILED DESCRIPTION

[0047] In the present specification, when it is described that any one component (or region, layer, part, etc.) is "on", "connected to", or "coupled to" another component, it means that it can be directly connected / coupled to the other component, or a third component can be disposed therebetween.

[0048] The same reference numerals refer to the same components. Also, in the drawings, the thickness, proportions, and sizes of the components are exaggerated for the sake of effective explanation of the technical content. "And / or" includes all combinations of one or more of the relevant components.

[0049] The first, second, and the like terms can be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another component. For example, a first component can be named a second component, and similarly, a second component can be named a first component without departing from the scope of the present application. The singular expression includes the plural expression unless it is explicitly stated otherwise in the context.

[0050] Also, the terms "below", "lower", "above", "upper", and the like are used to describe the relative relationship between the components shown in the drawings. The terms are relative concepts described based on the direction shown in the drawings.

[0051] It should be understood that the terms "include" or "have" and the like are intended to designate the presence of the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and do not preclude the presence or possibility of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0052] In the present specification, "directly disposed" can mean that there is no layer, film, region, plate, etc. added between the parts of the layer, film, region, plate, etc. and other parts. For example, "directly disposed" can mean disposed without using an additional member such as an adhesive member between two layers or two members.

[0053] In the present specification, "substituted or unsubstituted" can mean unsubstituted or substituted with one or more substituents selected from the group consisting of a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, an amino group, an amine group, a silyl group, an oxyl group, a thiol group, a thio group, a sulfinyl group, a sulfonyl group, a carbonyl group, a boron group, a phosphine oxide group, a phosphine sulfide group, an alkyl group, an alkenyl group, an alkynyl group, a hydrocarbon ring group, an aryl group, and a heterocyclic group. In addition, each of the substituents of the examples can be a substituted or unsubstituted group. For example, a biphenyl group can also be interpreted as an aryl group, and as a phenyl group substituted with a phenyl group.

[0054] In the present specification, "bonded to each other with adjacent groups to form a ring" can mean bonded to each other with adjacent groups to form a substituted or unsubstituted hydrocarbon ring or a substituted or unsubstituted heterocyclic ring. The hydrocarbon ring includes an aliphatic hydrocarbon ring and an aromatic hydrocarbon ring. The heterocyclic ring includes an aliphatic heterocyclic ring and an aromatic heterocyclic ring. The hydrocarbon ring and the heterocyclic ring can be a single ring or a polycyclic ring. In addition, the ring formed by bonding to each other can also be a ring connected to other rings to form a spiro structure.

[0055] In the present specification, "adjacent groups" can mean a substituent that substitutes an atom directly connected to an atom substituted with a corresponding substituent, another substituent that substitutes an atom substituted with a corresponding substituent, or a substituent that is closest to a corresponding substituent in a steric structure. For example, in 1,2-dimethylbenzene, the two methyl groups can be interpreted as "adjacent groups" to each other, and in 1,1-diethylcyclopentane, the two ethyl groups can be interpreted as "adjacent groups" to each other. In addition, in 4,5-dimethylphenanthrene, the two methyl groups can be interpreted as "adjacent groups" to each other.

[0056] In the present specification, examples of a halogen atom include a fluorine atom, a chlorine atom, a bromine atom, or an iodine atom.

[0057] In the present specification, an alkyl group can be linear or branched. The number of carbon atoms of the alkyl group is 1 or more and 50 or less, 1 or more and 30 or less, 1 or more and 20 or less, 1 or more and 10 or less, or 1 or more and 6 or less. Examples of the alkyl group include methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, t-butyl, isobutyl, 2-ethylbutyl, 3,3-dimethylbutyl, n-pentyl, isopentyl, neopentyl, t-pentyl, 1-methylpentyl, 3-methylpentyl, 2-ethylpentyl, 4-methyl-2-pentyl, n-hexyl, 1-methylhexyl, 2-ethylhexyl, 2-butylhexyl, n-heptyl, 1-methylheptyl, 2,2-dimethylheptyl, 2-ethylheptyl, 2-butylheptyl, n-octyl, t-octyl, 2-ethyloctyl, 2-butyloctyl, 2-hexyloctyl, 3,7-dimethyloctyl, n-nonyl, n-decyl, adamantyl, 2-ethyldecyl, 2-butyldodecyl, 2-hexyldecyl, 2-octyldecyl, n-undecyl, n-dodecyl, 2-ethyldodecyl, 2-butyldodecyl, 2-hexyldodecyl, 2-octyldodecyl, n-tridecyl, n-tetradecyl, n-pentadecyl, n-hexadecyl, 2-ethylhexadecyl, 2-butyihexadecyl, 2-hexylhexadecyl, 2-octylhexadecyl, n-heptadecyl, n-octadecyl, n-nonadecyl, n-eicosyl, 2-ethyleicosyl, 2-butyleicosyl, 2-hexyleicosyl, 2-octyleicosyl, n- heneicosyl, n-docosyl, n-tricosyl, n-tetracosyl, n-pentacosyl, n-hexacosyl, n-heptacosyl, n-octacosyl, n-nonacosyl, n-triacontyl, and the like, but are not limited thereto.

[0058] In the present specification, a cycloalkyl group can mean a cyclic alkyl group. The number of carbon atoms of the cycloalkyl group is 3 or more and 50 or less, 3 or more and 30 or less, 3 or more and 20 or less, or 3 or more and 10 or less. Examples of the cycloalkyl group include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, 4-methylcyclohexyl, 4-t-butylcyclohexyl, cycloheptyl, cyclooctyl, cyclononyl, cyclodecyl, norbornyl, 1-adamantyl, 2-adamantyl, isobornyl, dicycloheptyl, and the like, but are not limited thereto.

[0059] In the present specification, an alkenyl group means a hydrocarbon group including one or more carbon-carbon double bonds in the middle or at the end of an alkyl group having 2 or more carbon atoms. The alkenyl group can be linear or branched. The number of carbon atoms is not particularly limited, but is 2 or more and 30 or less, 2 or more and 20 or less, or 2 or more and 10 or less. Examples of the alkenyl group include ethenyl, 1-butenyl, 1-pentenyl, 1,3-butadienyl, phenylethenyl, phenylethenyl ethenyl, and the like, but are not limited thereto.

[0060] In this specification, an alkynyl group refers to a hydrocarbon group having one or more carbon-carbon triple bonds in the middle or at the end of an alkyl group having 2 or more carbon atoms. An alkynyl group may be straight-chain or branched. The number of carbon atoms is not particularly limited, but is 2 or more and 30 or less, 2 or more and 20 or less, or 2 or more and 10 or less. Specific examples of alkynyl groups include, but are not limited to, ethynyl and propynyl.

[0061] In the present specification, a hydrocarbon ring group means any functional group or substituent derived from an aliphatic hydrocarbon ring. The hydrocarbon ring group may be a saturated hydrocarbon ring group having 5 or more and 20 or less ring carbon atoms.

[0062] In this specification, an aryl group means any functional group or substituent derived from an aromatic hydrocarbon ring. The aryl group may be a monocyclic aryl group or a polycyclic aryl group. The number of ring carbon atoms of the aryl group may be 6 or more and 30 or less, 6 or more and 20 or less, or 6 or more and 15 or less. Examples of aryl groups include phenyl, naphthyl, fluorenyl, anthracenyl, phenanthrenyl, biphenyl, terphenyl, quaterphenyl, quinquephenyl, hexaphenyl, benzo[9,10]phenanthrenyl, pyrenyl, benzofluoranthenyl, etc., but not limited thereto.

[0063] In this specification, the fluorenyl group may be substituted, or two substituents may be bonded to each other to form a spiro structure. Examples of fluorenyl groups being substituted are as follows. However, the present invention is not limited thereto.

[0064]

[0065] In this specification, a heterocyclic group refers to any functional group or substituent derived from a ring containing one or more heteroatoms selected from B, O, N, P, Si, and S. Heterocyclic groups include aliphatic heterocyclic groups and aromatic heterocyclic groups. Aromatic heterocyclic groups may be heteroaryl groups. Aliphatic heterocyclic and aromatic heterocyclic groups may be monocyclic or polycyclic.

[0066] In this specification, the heterocyclic group may include one or more of B, O, N, P, Si and S as heteroatoms. When the heterocyclic group includes two or more heteroatoms, the two or more heteroatoms may be the same as or different from each other. The heterocyclic group may be a monocyclic heterocyclic group or a polycyclic heterocyclic group, and is a concept including heteroaryl groups. The number of carbon atoms in the ring of the heterocyclic group may be 2 or more and 30 or less, 2 or more and 20 or less, or 2 or more and 10 or less.

[0067] In the present specification, the aliphatic heterocyclic group can include one or more of B, O, N, P, Si, and S as a heteroatom. The number of ring-forming carbon atoms of the aliphatic heterocyclic group can be 2 or more and 30 or less, 2 or more and 20 or less, or 2 or more and 10 or less. Examples of the aliphatic heterocyclic group include oxiranyl group, thiiranyl group, pyrrolidinyl group, piperidinyl group, tetrahydrofuranyl group, tetrahydrothiophenyl group, thianyl group, tetrahydropyranyl group, 1,4-dioxanyl group, and the like, but are not limited thereto.

[0068] In the present specification, the heteroaryl group can include one or more of B, O, N, P, Si, and S as a heteroatom. When the heteroaryl group includes two or more heteroatoms, the two or more heteroatoms can be the same as each other or different from each other. The heteroaryl group can be a monocyclic heterocyclic group or a polycyclic heterocyclic group. The number of ring-forming carbon atoms of the heteroaryl group can be 2 or more and 30 or less, 2 or more and 20 or less, or 2 or more and 10 or less. Examples of the heteroaryl group include thienyl group, furanyl group, pyrrolyl group, imidazolyl group, pyridyl group, bipyridyl group, triazinyl group, triazolyl group, acridinyl group, pyrazinyl group, quinazolyl group, quinazolyl group, quinoxazinyl group, quinoxazinyl group, pyridazinyl group, pyrazinyl group, quinolyl group, quinazolinyl group, quinoxalinyl group, phenoxazinyl group, phthalazinyl group, pyridopyridyl group, pyridopyrazinyl group, pyrazinopyrazinyl group, isoquinolyl group, indolyl group, carbazolyl group, N-arylcarbazolyl group, N-heteroarylcarbazolyl group, N-alkylcarbazolyl group, benzoxazolyl group, benzimidazolyl group, benzothiazolyl group, benzocarbazolyl group, benzothiophenyl group, dibenzothiophenyl group, thienothiophenyl group, benzofuranyl group, phenanthrolinyl group, thiazolyl group, isoxazolyl group, oxazolyl group, oxadiazolyl group, thiadiazolyl group, phenothiazinyl group, dibenzosilolyl group, dibenzofuranyl group, and the like, but are not limited thereto.

[0069] In the present specification, the aforementioned description on the aryl group can be applied to the arylene group except that the arylene group is a divalent group. The aforementioned description on the heteroaryl group can be applied to the heteroarylene group except that the heteroarylene group is a divalent group.

[0070] In the present specification, the silyl group includes alkylsilyl group and arylsilyl group. Examples of the silyl group include trimethylsilyl group, triethylsilyl group, t-butyldimethylsilyl group, vinyl dimethylsilyl group, propyldimethylsilyl group, triphenylsilyl group, diphenylsilyl group, phenylsilyl group, and the like, but are not limited thereto.

[0071] In the present specification, the number of carbon atoms of the acyl group is not particularly limited, but can be 1 or more and 40 or less, 1 or more and 30 or less, 1 or more and 20 or less, or 1 or more and 10 or less. Examples of the acyl group include ethylacyl group, ethylcarbonyl group, isopropylcarbonyl group, naphthylcarbonyl group, cyclopentylcarbonyl group, cyclohexylcarbonyl group, phenylcarbonyl group, and the like, but are not limited thereto. For example, the acyl group can have the following structure, but is not limited thereto.

[0072]

[0073] In the present specification, the number of carbon atoms of a sulfinyl group and a sulfonyl group is not particularly limited, but can be 1 or more and 30 or less. The sulfinyl group can include an alkylsulfinyl group and an arylsulfinyl group. The sulfonyl group can include an alkylsulfonyl group and an arylsulfonyl group.

[0074] In the present specification, a thio group can include an alkylthio group and an arylthio group. The thio group can mean a sulfur atom bonded to a group of the above-described defined alkyl group or aryl group. Examples of the thio group include a methylthio group, an ethylthio group, a propylthio group, a pentylthio group, a hexylthio group, an octylthio group, a dodecylthio group, a cyclopentylthio group, a cyclohexylthio group, a phenylthio group, a naphthylthio group, and the like, but are not limited thereto.

[0075] In the present specification, an oxy group can mean an oxygen atom bonded to a group of the above-described defined alkyl group or aryl group. The oxy group can include an alkoxy group and an aryloxy group. The alkoxy group can be linear, branched, or cyclic. The number of carbon atoms of the alkoxy group is not particularly limited, and for example, can be 1 or more and 20 or less or 1 or more and 10 or less. Examples of the aryloxy group include a methoxy group, an ethoxy group, an n-propoxy group, an i-propoxy group, a butoxy group, a pentoxy group, a hexyloxy group, an octyloxy group, a nonyloxy group, a decyloxy group, a benzyloxy group, and the like, but are not limited thereto.

[0076] In the present specification, a boron group can mean a boron atom bonded to a group of the above-described defined alkyl group or aryl group. The boron group includes an alkylboron group and an arylboron group. Examples of the boron group include a dimethylboron group, a diethylboron group, a tert-butylmethylboron group, a diphenylboron group, a phenylboron group, and the like, but are not limited thereto.

[0077] In the present specification, the number of carbon atoms of an amine group is not particularly limited, but can be 1 or more and 30 or less. The amine group can include an alkylamine group and an arylamine group. Examples of the amine group include a methylamine group, a dimethylamine group, a phenylamine group, a diphenylamine group, a naphthylamine group, a 9-methyl-anthrylamine group, and the like, but are not limited thereto.

[0078] In the present specification, the alkyl group in an alkylthio group, an alkylsulfonyl group, an alkylboron group, an alkylsilyl group, and an alkylamine group is the same as the examples of the alkyl group described above.

[0079] In the present specification, the aryl group in an aryloxy group, an arylthio group, an arylsulfonyl group, an arylboron group, an arylsilyl group, and an arylamine group is the same as the examples of the aryl group described above.

[0080] In the present specification, direct linkage can mean single bond linkage.

[0081] Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification have the same meaning as commonly understood by one of ordinary skill in the art to which the present application pertains. 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 overly idealized or formal sense unless expressly so defined herein.

[0082] Hereinafter, a display device according to an embodiment of the present application and a display panel included in the display device will be described with reference to the accompanying drawings.

[0083] Figure 1 is an exploded perspective view illustrating an electronic device according to an embodiment of the present application. Figure 2 is a perspective view illustrating a display device according to an embodiment of the present application. Figure 2 is a view illustrating only a display device DD shown in FIG. 1A. Figure 1 is a view illustrating only a display device DD shown in FIG. 1A.

[0084] In Figure 1 , a head mounted display (HMD) is illustrated as an example of the electronic device EE. The head mounted display can be an electronic device mounted on a user's head to provide a screen of a display image or a video to the user. The head mounted display can include a see-through type providing augmented reality (AR) based on actual external things and a see-closed type providing virtual reality (VR) to the user with a screen independent of external things.

[0085] Referring to Figure 1 , the electronic device EE can include a display device DD and a lens portion LS opposite the display device DD. In addition, the electronic device EE can include a main frame MFR, a cover frame CFR, and a fixing portion FP.

[0086] The main frame MFR can be a portion worn on a user's face. The main frame MFR can have a shape corresponding to a shape of the user's head (face). For example, a length of the fixing portion FP can be adjusted according to a head circumference of the user. The fixing portion FP, as a structure to make the installation of the main frame MFR easy, can include a lanyard, a strap, or the like. However, embodiments are not limited thereto, and the fixing portion FP can be a helmet or a temple, or the like coupled with the main frame MFR.

[0087] The main frame MFR can be coupled with the cover frame CFR to provide an accommodation space capable of mounting the lens portion LS and the display device DD.

[0088] The lens portion LS can be disposed between the display device DD and the user. The lens portion LS can pass light emitted from the display device DD therethrough to provide it to the user. For example, the lens portion LS can include various types of lenses such as a multi-lens, a convex lens, a concave lens, a spherical lens, an aspherical lens, a single lens, a compound lens, a standard lens, a narrow-angle lens, a wide-angle lens, a fixed-focus lens, and a zoom lens.

[0089] The lens portion LS can include a first lens LS1 and a second lens LS2. The first lens LS1 and the second lens LS2 can be disposed to correspond to positions of the left and right eyes of the user. The first lens LS1 and the second lens LS2 can be accommodated inside the main frame MFR.

[0090] The display device DD can be provided in a state fixed to the main frame MFR, or can also be provided in a state capable of being detached. The display device DD can provide an image to the user, which can include not only a dynamic image but also a static image. The display device DD will be described in greater detail below.

[0091] The cover frame CFR can be disposed on a surface of the display device DD to protect the display device DD. The cover frame CFR and the lens portion LS can space the display device DD apart from each other.

[0092] In Figure 1 The first direction DR1, the second direction DR2, and the third direction DR3 are shown in the accompanying drawings below, and the directions indicated by the first direction DR1, the second direction DR2, and the third direction DR3 described in the specification are a relative concept and can be changed to other directions. In the specification, the first direction DR1 and the second direction DR2 can be orthogonal to each other, and the third direction DR3 can be a normal direction to a plane defined by the first direction DR1 and the second direction DR2.

[0093] The thickness direction of the electronic device EE can be a direction parallel to the third direction DR3, which is a normal direction to a plane defined by the first direction DR1 and the second direction DR2. In the specification, a front surface (or an upper surface) and a back surface (or a lower surface) of a member constituting the electronic device EE can be defined with reference to the third direction DR3. In the specification, "on a plane" means a surface parallel to a plane defined by the first direction DR1 and the second direction DR2, and "on a cross section" means a surface parallel to the third direction DR3.

[0094] Referring to Figure 2 The display device DD can be a structure that substantially generates an image. The image generated by the display device DD can be visually recognized by the user from the outside.

[0095] The display device DD may be a light-emitting display panel, but is not particularly limited thereto. For example, the display device DD may be an organic light-emitting display panel or an inorganic light-emitting display panel. An organic light-emitting display panel may have a light-emitting layer comprising an organic light-emitting substance. An inorganic light-emitting display panel may have a light-emitting layer comprising quantum dots, quantum rods, or micro-LEDs. Hereinafter, the display device DD will be described as an organic light-emitting display panel.

[0096] The display device DD of one embodiment includes a display area AA and a peripheral area NAA.

[0097] The display device DD can display an image through the display area AA. The display area AA may include a plane defined by a first direction DR1 and a second direction DR2. The display area AA may be provided in a plurality. The display area AA of an embodiment may include a first display area AA1 and a second display area AA2. Figure 2 , the first display area AA1 and the second display area AA2 are spaced apart from each other in the first direction DR1. However, this may be different and one or more display areas AA may be provided. The display area AA may include a rectangular shape or a circular shape. The first display area AA1 and the second display area AA2 may each independently include a rectangular shape or a circular shape. For example, Figure 2 As shown, each of the first display area AA1 and the second display area AA2 may include a rectangular shape. The peripheral area NAA is adjacent to the display area AA. The peripheral area NAA may surround the display area AA. The peripheral area NAA is adjacent to each of the first display area AA1 and the second display area AA2. The peripheral area NAA may surround each of the first display area AA1 and the second display area AA2. However, this is not limited to this, and the peripheral area NAA may be arranged adjacent to only one side of the display area AA.

[0098] Refer to it together Figure 1 and Figure 2 The display area AA may correspond to the lens portion LS. The first display area AA1 may correspond to the first lens LS1. The second display area AA2 may correspond to the second lens LS2. Light emitted from the first display area AA1 may pass through the first lens LS1 and enter the user's right eye. Light emitted from the second display area AA2 may pass through the second lens LS2 and enter the user's left eye.

[0099] Figure 3 It is along Figure 2 A cross-sectional view taken along line II'. Figure 4 yes Figure 3 The sectional view shown is a partial enlargement of the figure. Figure 4 In, omitted Figure 3The base layer BS, the filling layer FM, the sealing member SLM, and the window body WM are illustrated, and the stacked structure of the display device DD is illustrated in detail.

[0100] Referring to Figure 3 and Figure 4 , the display device DD includes the base layer BS, the display element layer DP-OLED, the color filters CF-R, CF-G, CF-B, the refractive layer RL, and the protective layer PL. The display panel DP can include the base layer BS and the display element layer DP-OLED. The display module DM can include the display panel DP, the color filters CF-R, CF-G, CF-B arranged on the display panel DP, the refractive layer RL arranged on the display panel DP and covering the color filters CF-R, CF-G, CF-B, and the protective layer PL arranged on the refractive layer RL.

[0101] The base layer BS can be a member for providing a base surface on which the display element layer DP-OLED is arranged. The base layer BS can be rigid or flexible. The base layer BS can be a glass substrate, a metal substrate, or a polymer substrate, etc. However, embodiments are not limited thereto, and the base layer BS can be an inorganic layer, an organic layer, or a composite material layer.

[0102] The base layer BS can have not only a single layer structure but also a multi-layer structure. For example, the base layer BS can have a three-layer structure of a polymer resin layer, an adhesive layer, and a polymer resin layer. In particular, the polymer resin layer can include a polyimide-based resin. In addition, the polymer resin layer can include at least one of an acrylate-based resin, a vinyl-based resin, an epoxy-based resin, a urethane-based resin, a cellulose-based resin, a siloxane-based resin, and a perylene-based resin. On the other hand, in the present specification, the "based resin" means to include a functional group of "based".

[0103] The display panel DP of an embodiment can further include a circuit layer DP-CL arranged between the base layer BS and the display element layer DP-OLED. The circuit layer DP-CL can be arranged on the base layer BS. The circuit layer DP-CL can include an insulating layer, a semiconductor pattern, a conductive pattern, a signal line, etc. The circuit layer DP-CL can include a plurality of transistors (not shown) formed of the semiconductor pattern, the conductive pattern, the signal line, etc. The transistors (not shown) each can include a control electrode, an input electrode, and an output electrode. For example, the circuit layer DP-CL can include a switching transistor and a driving transistor for driving the light emitting elements ED-R, ED-G, ED-B.

[0104] The display element layer DP-OLED is arranged on the substrate layer BS. The display element layer DP-OLED can be arranged on the circuit layer DP-CL. The display element layer DP-OLED includes light emitting elements ED-R, ED-G, ED-B. In an embodiment, the display element layer DP-OLED can include a first light emitting element ED-R, a second light emitting element ED-G, and a third light emitting element ED-B. The display element layer DP-OLED can further include a pixel definition film PDL. Each of the light emitting elements ED-R, ED-G, ED-B overlaps the display area AA (e.g., a first display area AA1) in the plane. Each of the light emitting elements ED-R, ED-G, ED-B can include a first electrode AE-R, AE-G, AE-B, a second electrode CE facing the first electrode AE-R, AE-G, AE-B, and a light emitting layer EML-R, EML-G, EML-B arranged between the first electrode AE-R, AE-G, AE-B and the second electrode CE. Further, each of the light emitting elements ED-R, ED-G, ED-B can further include a hole transport region HTR and an electron transport region ETR. Figure 3 and Figure 4 Each of the light emitting elements ED-R, ED-G, ED-B can include a first electrode AE-R, AE-G, AE-B, a second electrode CE facing the first electrode AE-R, AE-G, AE-B, and a light emitting layer EML-R, EML-G, EML-B arranged between the first electrode AE-R, AE-G, AE-B and the second electrode CE. Further, each of the light emitting elements ED-R, ED-G, ED-B can further include a hole transport region HTR and an electron transport region ETR.

[0105] On the other hand, in the present specification, two structures "overlap" are not limited to having the same area and the same shape in the plane, and also include a case where the two structures have different areas and / or different shapes. The plane means a plane perpendicular to the thickness direction.

[0106] The pixel definition film PDL can be arranged on the substrate layer BS. The pixel definition film PDL can be arranged on the circuit layer DP-CL. A plurality of pixel opening portions OH can be defined in the pixel definition film PDL. At least a part of the first electrode AE-R, AE-G, AE-B can be exposed in the pixel opening portion OH of the pixel definition film PDL.

[0107] The pixel definition film PDL can include an organic resin or an inorganic substance. For example, the pixel definition film PDL can be formed of a Polyacrylate-based resin, a Polyimide-based resin, silicon nitride (SiN x ), silicon oxide (SiO x ), or silicon oxynitride (SiO x N y ), or the like.

[0108] In addition, in one embodiment, the pixel defining layer (PDL) may have a light-absorbing property, for example, it may display black. The pixel defining layer (PDL) may include a black coloring agent. The black coloring agent may include a black dye or a black pigment. The pixel defining layer (PDL) may be equivalent to a light-shielding pattern having a light-shielding property.

[0109] exist Figure 4 , an embodiment is shown in which the light-emitting layers EML-R, EML-G, and EML-B of the light-emitting elements ED-R, ED-G, and ED-B are arranged in the pixel opening OH defined in the pixel definition film PDL, and the hole transport region HTR, the electron transport region ETR, and the second electrode CE are commonly provided in the entire light-emitting elements ED-R, ED-G, and ED-B. However, the embodiment is not limited thereto, and Figure 4 Unlike the case shown in FIG. 1 , in one embodiment, at least one of the hole transport region HTR, the electron transport region ETR, and the second electrode CE may be provided by patterning within the pixel opening OH defined in the pixel defining layer PDL. In one embodiment, at least one of the hole transport region HTR, the light-emitting layers EML-R, EML-G, EML-B, the electron transport region ETR, and the second electrode CE of the light-emitting elements ED-R, ED-G, and ED-B may be provided by patterning using an inkjet printing method.

[0110] In a display device DD according to an embodiment, the first light-emitting element ED-R, the second light-emitting element ED-G, and the third light-emitting element ED-B may emit light in different wavelength regions. For example, in an embodiment, the display device DD may include a first light-emitting element ED-R that emits red light, a second light-emitting element ED-G that emits green light, and a third light-emitting element ED-B that emits blue light. However, embodiments are not limited thereto, and the first light-emitting element ED-R, the second light-emitting element ED-G, and the third light-emitting element ED-B may emit light in the same wavelength region, or at least one of the first light-emitting element ED-R, the second light-emitting element ED-G, and the third light-emitting element ED-B may emit light in a different wavelength region. For example, the first light-emitting element ED-R, the second light-emitting element ED-G, and the third light-emitting element ED-B may all emit blue light.

[0111] In the first light emitting element ED-R, the second light emitting element ED-G, and the third light emitting element ED-B, the first electrode AE-R, AE-G, AE-B can be disposed on the circuit layer DP-CL. The first electrode AE-R, AE-G, AE-B can be an anode or a cathode. Further, the first electrode AE-R, AE-G, AE-B can be a pixel electrode. The first electrode AE-R, AE-G, AE-B can be a transmissive electrode, a semi-transmissive electrode, or a reflective electrode.

[0112] The hole transport region HTR can be disposed between the first electrode AE-R, AE-G, AE-B and the light emitting layer EML-R, EML-G, EML-B. The hole transport region HTR can include at least one of a hole injection layer, a hole transport layer, and an electron blocking layer. The hole transport region HTR can be disposed as a common layer in a manner overlapping the display area AA. However, embodiments are not limited thereto, and the hole transport region HTR can be patterned to be provided as separately disposed corresponding to each of the light emitting elements ED-R, ED-G, ED-B.

[0113] The light emitting layer EML-R, EML-G, EML-B can be disposed on the first electrode AE-R, AE-G, AE-B. The light emitting layer EML-R, EML-G, EML-B can include a first light emitting layer EML-R, a second light emitting layer EML-G, and a third light emitting layer EML-B. The first light emitting layer EML-R can emit first light. The second light emitting layer EML-G can emit second light. The third light emitting layer EML-B can emit third light. The first light to the third light emitted from the light emitting element ED-R, ED-G, ED-B according to an embodiment can be light of substantially different wavelength ranges from each other. For example, the first light can be red light of a wavelength range of 625 nm or more and 675 nm or less, the second light can be green light of a wavelength range of 500 nm or more and 570 nm or less, and the third light can be blue light of a wavelength range of 410 nm or more and 480 nm or less.

[0114] The electron transport region ETR can be disposed between the light emitting layer EML-R, EML-G, EML-B and the second electrode CE. The electron transport region ETR can include at least one of an electron injection layer, an electron transport layer, and a hole blocking layer. The electron transport region ETR can be disposed as a common layer in a manner overlapping the display area AA. However, embodiments are not limited thereto, and the electron transport region ETR can be patterned to be provided as separately disposed corresponding to each of the light emitting layer EML-R, EML-G, EML-B.

[0115] The second electrode CE can be disposed on the electron transport region ETR. The second electrode CE can be a common electrode. The second electrode CE can be a cathode or an anode, but embodiments are not limited thereto. For example, when the first electrode AE-R, AE-G, AE-B is an anode, the second electrode CE can be a cathode, and when the first electrode AE-R, AE-G, AE-B is a cathode, the second electrode CE can be an anode. The second electrode CE can be a transmissive electrode, a semi-transmissive electrode, or a reflective electrode.

[0116] The display device DD of an embodiment can further include a first dam pattern DMP1 and a second dam pattern DMP2. Each of the first dam pattern DMP1 and the second dam pattern DMP2 can be an insulating pattern. Each of the first dam pattern DMP1 and the second dam pattern DMP2 can have a thickness greater than a thickness of the pixel definition layer PDL. Each of the first dam pattern DMP1 and the second dam pattern DMP2 can include the same substance as the pixel definition layer PDL. The first dam pattern DMP1 and the second dam pattern DMP2 can be disposed in the non-active area NAA. The first dam pattern DMP1 can be disposed between the second dam pattern DMP2 and the display area AA. Although not shown, the first dam pattern DMP1 can be disposed to surround the display area AA in a plan view.

[0117] The display device DD of an embodiment can further include a first inorganic layer IOL1, an organic layer OL, a second inorganic layer IOL2, and a capping layer CPL.

[0118] The first inorganic layer IOL1 can be disposed on the display element layer DP-OLED. The first inorganic layer IOL1 can be disposed to extend to the non-active area NAA. The first inorganic layer IOL1 can be disposed on the first dam pattern DMP1 and the second dam pattern DMP2. The first inorganic layer IOL1 can cover a step or a bend caused by the display element layer DP-OLED. The first inorganic layer IOL1 can function to protect the light emitting element ED-R, ED-G, ED-B from oxygen and moisture. The first inorganic layer IOL1 can include silicon nitride or silicon oxynitride. The first inorganic layer IOL1 can have a thickness of 7000 angstroms to 1.2 µm. For example, the first inorganic layer IOL1 can have a thickness of 9000 angstroms to 1 µm. The first inorganic layer IOL1 can be a single-layer inorganic layer, or can have a multi-layer structure in which a plurality of sub-inorganic layers are stacked in the third direction DR3.

[0119] The organic layer OL can cover a step caused by the display element layer DP-OLED. The organic layer OL can be disposed to overlap the display area AA. A portion of the organic layer OL can be disposed to overlap the non-display area NAA. A portion of the organic layer OL can be disposed more upward than the first dam pattern DMP1 and the second dam pattern DMP2. The organic layer OL can be disposed on the display element layer DP-OLED. The organic layer OL can provide a base surface on which a color filter CF-R, CF-G, CF-B, a refractive layer RL, and a protective layer PL, which will be described later, can be disposed. The organic layer OL can function as a buffer between the first inorganic layer IOL1 and the second inorganic layer IOL2. That is, interlayer stress can be alleviated. The organic layer OL can include a monomer or a polymer. The thickness of the organic layer OL can be 6 μm to 12 μm. For example, the thickness of the organic layer OL can be 8.5 μm to 11 μm. In addition, the organic layer OL can alleviate stress between layers that are in contact. The organic layer OL can be formed by a solution process such as spin coating, slot coating, and an inkjet process.

[0120] The second inorganic layer IOL2 can be disposed on the organic layer OL to cover the organic layer OL. The second inorganic layer IOL2, by being disposed on the organic layer OL, can be stably formed on a relatively flat surface. The second inorganic layer IOL2 can prevent moisture or oxygen from flowing into the organic layer OL. The second inorganic layer IOL2 can include silicon nitride, silicon oxide, or a compound combining the same. The second inorganic layer IOL2 can be a single-layered inorganic layer, or can have a multi-layer structure in which a plurality of sub-inorganic layers are stacked in the third direction DR3.

[0121] The capping layer CPL can be disposed on the second inorganic layer IOL2 to cover the second inorganic layer IOL2. The capping layer CPL can include a plurality of layers or a single layer. In an embodiment, the capping layer CPL can be an organic layer or an inorganic layer. For example, when the capping layer CPL includes an inorganic substance, the inorganic substance can include an alkali metal compound such as LiF, an alkaline earth metal compound such as MgF2, SiO x N y , SiN x , SiO x , etc. For example, when the capping layer CPL includes an organic substance, the organic substance can include α-NPD, NPB, TPD, m-MTDATA, Alq3, CuPc, TPD15 (N4,N4,N4',N4'-Tetrakis(4-biphenyl-4-yl)phenyl-4,4'-diamine), TCTA (4,4',4"-Tris(9H-carbazol-9-yl)triphenylamine), etc., or can include an acrylate such as an epoxy resin or a methacrylate. However, embodiments are not limited thereto.

[0122] The color filters CF-R, CF-G, CF-B are disposed on the display element layer DP-OLED. The color filters CF-R, CF-G, CF-B can be disposed on the second inorganic layer IOL2. The capping layer CPL can cover the color filters CF-R, CF-G, CF-B. The color filters CF-R, CF-G, CF-B can overlap the display area AA in a plan view. The color filters CF-R, CF-G, CF-B can include a first color filter CF-R, a second color filter CF-G, and a third color filter CF-B. The first color filter CF-R can overlap the first light emitting element ED-R in a plan view. The second color filter CF-G can overlap the second light emitting element ED-G in a plan view. The third color filter CF-B can overlap the third light emitting element ED-B in a plan view. The display device DD of one embodiment can further include a light blocking portion (not shown) disposed at least one of between the first color filter CF-R and the second color filter CF-G and between the second color filter CF-G and the third color filter CF-B. The light blocking portion can be a black matrix. The light blocking portion can be formed to contain an organic light blocking substance or an inorganic light blocking substance, the organic light blocking substance including a black pigment or a black dye. The light blocking portion can prevent light leakage and distinguish a boundary between adjacent color filters CF-R, CF-G, CF-B. Each of the first color filter CF-R, the second color filter CF-G, and the third color filter CF-B can contain a polymer photosensitive resin and a colorant. In this specification, the colorant includes a pigment and a dye. A red colorant includes a red pigment and a red dye, a green colorant includes a green pigment and a green dye, and a blue colorant includes a blue pigment and a blue dye. The first color filter CF-R can include a red pigment or a red dye, the second color filter CF-G can include a green pigment or a green dye, and the third color filter CF-B can include a blue pigment or a blue dye. That is, the first color filter CF-R disposed on the first light emitting element ED-R can include a red colorant, the second color filter CF-G disposed on the second light emitting element ED-G can include a green colorant, and the third color filter CF-B disposed on the third light emitting element ED-B can include a blue colorant.

[0123] The refractive layer RL is arranged on the color filters CF-R, CF-G, CF-B. The refractive layer RL can be arranged to overlap the display area AA in a planar view. The refractive layer RL includes a cover layer CVL and a convex pattern ML. The refractive layer RL can cause light emitted from the light emitting elements ED-R, ED-G, ED-B to be directed toward the third direction DR3 to improve the front luminance ratio. The front luminance ratio can be defined as a ratio of light from a particular light emitting element toward the front relative to all light generated in the corresponding light emitting element, and improving the front luminance ratio is interpreted as increasing the front luminance ratio. In this specification, the front can mean the third direction DR3, but this is a relative concept, and the front can be the first direction DR1 or the second direction DR2.

[0124] The refractive layer RL can have a refractive index of 1.6 or more. The refractive layer RL can include an acrylic resin. For example, the refractive layer RL can include at least one of polymethyl methacrylate, polyacrylonitrile, and polyacrylic acid. The cover layer CVL covers the color filters CF-R, CF-G, CF-B. The cover layer CVL can be directly arranged on the cap layer CPL. The cover layer CVL can cover steps caused by the color filters CF-R, CF-G, CF-B to be planarized.

[0125] The convex pattern ML is arranged between the cover layer CVL and a protection layer PL described later. The convex pattern ML has a shape integrated with the cover layer CVL. The convex pattern ML can have a shape protruding upward from an upper surface of the cover layer CVL toward the third direction DR3. The convex pattern ML can overlap the light emitting elements ED-R, ED-G, ED-B in a planar view. The convex pattern ML can cause light emitted from the light emitting elements ED-R, ED-G, ED-B to be directed toward the front to improve the front luminance ratio. The convex pattern ML can include a plurality of convex patterns ML-R, ML-G, ML-B. The convex pattern ML can include a first convex pattern ML-R corresponding to the first light emitting element ED-R, a second convex pattern ML-G corresponding to the second light emitting element ED-G, and a third convex pattern ML-B corresponding to the third light emitting element ED-B. The convex pattern ML can include a micro lens.

[0126] A protective layer PL is disposed on the refractive layer RL. The protective layer PL can protect the convex pattern ML from physical impact, oxygen, or moisture from the outside. The protective layer PL can be disposed on the refractive layer RL to be planarized. One end of the protective layer PL is aligned with a boundary of the display area AA and the peripheral area NAA on the plane. The thickness d of the protective layer PL can be 20 µm or more and 500 µm or less. The protective layer PL includes a first compound including at least one of a polysilsesquioxane-based compound, a polyurethane-based compound, a polycarbonate-based compound, and a polyethylene terephthalate-based compound, a second compound including a surfactant including at least one of a fluorine-containing compound and a silicon-containing compound, and a third compound including an epoxy-based compound. The weight of the second compound is 0.05% or more and less than 0.2% of the sum of the weight of the first compound, the weight of the second compound, and the weight of the third compound. For example, the weight of the second compound can be 0.05% or more and 0.1% or less of the sum of the weight of the first compound, the weight of the second compound, and the weight of the third compound.

[0127] The first compound can increase the Young's modulus of the protective layer PL to improve the impact resistance of the protective layer PL.

[0128] The first compound can include at least one of first to seventh polysilsesquioxane compounds represented by Chemical Formula 1 to Chemical Formula 7, respectively.

[0129] [Chemical Formula 1]

[0130]

[0131] [Chemical Formula 2]

[0132]

[0133] [Chemical Formula 3]

[0134]

[0135] [Chemical Formula 4]

[0136]

[0137] [Chemical Formula 5]

[0138]

[0139] [Chemical Formula 6]

[0140]

[0141] [Chemical Formula 7]

[0142]

[0143] In the Chemical Formula 1 to the Chemical Formula 7, X can be R 41 or [(SiO 3 / 2 R 42 ) 4+2n O], Y1and Y2may be independently O, NR 51 or [(SiO 3 / 2 R 52 ) 4+2n' O], R 11 , R 12 , R 21 to R 24 , R 31 to R 34 , R a1 , R a2 , R b1 to R b5 , R c1 to R c4 , R 41 , R 42 , R 51 and R 52 may be independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted amine group, a substituted or unsubstituted epoxy group, a nitro group, a nitrile group, a mercapto group, an isocyanate group, a substituted or unsubstituted alkyl group having a carbon number of 1 or more and 20 or less, a substituted or unsubstituted alkenyl group having a carbon number of 2 or more and 20 or less, a substituted or unsubstituted alkoxy group having a carbon number of 1 or more and 40 or less, a substituted or unsubstituted aliphatic heterocyclic group having a ring-constituting carbon number of 2 or more and 30 or less, a substituted or unsubstituted aryl group having a ring-constituting carbon number of 6 or more and 30 or less, a substituted or unsubstituted heteroaryl group having a ring-constituting carbon number of 2 or more and 30 or less, a substituted or unsubstituted aryloxy group having a ring-constituting carbon number of 3 or more and 30 or less, or a substituted or unsubstituted arylmercapto group having a ring-constituting carbon number of 3 or more and 30 or less. In the present specification, the substituted alkyl group can be a concept including an alkyl group substituted with an aryl group and a cycloalkyl group. For example, X can be [(SiO 3 / 2 R 42 ) 4+2n O], Y1and Y2may be independently [(SiO 3 / 2 R 52 ) 4+2n' O]. R 11 , R 12 , R21 to R 24 , R 31 to R 34 , R a1 , R a2 , R b1 to R b5 , R c1 to R c4 , R 41 , R 42 , R 51 and R 52 may be each independently unsubstituted methyl.

[0144] n and n' can be each independently an integer of 1 or more and 20 or less. For example, n and n' can be each 10.

[0145] a can be an integer of 1 or more and 100000 or less, b, b', c and c' can be each independently an integer of 1 or more and 100 or less. For example, a can be 50000, b, b', c and c' can be each 50.

[0146] The surfactant included in the second compound can include at least one of 3M Company's FC-4430, FC-4432 and FC-4434 products. The second compound can make the mixed solution SL (refer to Figure 9 ) of the material of the protective layer PL (refer to ) to form a proper contact angle with the refractive layer RL in the manufacturing process of the protective layer PL, so that one end of the protective layer PL can be aligned with the boundary of the display area AA and the peripheral area NAA without an additional process, thereby improving the difficulty and economy of the display device DD manufacturing method.

[0147] Figure 9 The epoxy compound included in the third compound can include a viscosity modifier. The viscosity modifier included in the third compound can include at least one of a glycidyl ether compound, a glycidyl amine compound, a glycidyl ester compound and a diepoxy compound. For example, the viscosity modifier included in the third compound can be n-Butyl glycidyl ether. The third compound can increase the viscosity of the mixed solution SL (refer to Figure 9 ) of the material of the protective layer PL (refer to

[0148] The display device DD of one embodiment can further include a filler layer FM. The filler layer FM can be disposed on the base layer BS. The filler layer FM can overlap the protective layer PL in the first direction DR1. One end of the filler layer FM can be in contact with one end of the protective layer PL. One end of the filler layer FM can be aligned with a boundary between the display region AA and the non-display region NAA. The filler layer FM can include an epoxy-based organic substance. The filler layer FM can be disposed so as to overlap the non-display region NAA.

[0149] The display device DD of one embodiment can further include a window WM disposed on the protective layer PL. The window WM can cover the entire outer side of the display device DD. A front surface of the window WM can correspond to a front surface of the display device DD. The window WM can include an optically transparent insulating substance. For example, the window WM can include glass or plastic. The window WM can have a multilayer structure or a single layer structure. For example, the window WM can include a plurality of plastic films coupled by an adhesive, or can include a glass substrate and a plastic film coupled by an adhesive.

[0150] The display device DD of one embodiment can further include a sealing member SLM. The sealing member SLM can be disposed between the base layer BS and the window WM. The protective layer PL can be spaced apart from the sealing member SLM in the first direction DR1. The filler layer FM can occupy a space between the sealing member SLM and the protective layer PL generated by the sealing member SLM and the protective layer PL being spaced apart. That is, the sealing member SLM, the filler layer FM, and the protective layer PL can be disposed in this order in the first direction DR1. Although not shown separately, the sealing member SLM can be disposed along the outer edge of the display device DD. The sealing member SLM can be aligned with the edge of the display device DD. The sealing member SLM protects the inside of the display device DD from the outside and is disposed between the circuit layer DP-CL and the window WM in the non-display region NAA to support the window WM. The sealing member SLM can include an adhesive resin and an inorganic filler mixed with the adhesive resin. The sealing member SLM can further include other additives. The additives can include an amine-based curing agent and a photoinitiator. The additives can further include a silane-based additive and an acrylic-based additive. The sealing member SLM can also include an inorganic material such as a glass frit.

[0151] Hereinafter, a display device manufacturing method according to one embodiment of the present application will be described. The same description as the structure described in Figures 1 to 4 will be omitted.

[0152] Figure 5a and Figure 5b are flowcharts each showing a display device manufacturing method according to one embodiment of the present application. Figures 6 to 11 are cross-sectional views each showing part of a display device manufacturing method according to one embodiment of the present application.

[0153] Referring to Figure 5a and Figure 5b , a display device manufacturing method according to an embodiment of the present application includes a step S100 of providing an initial display device, a step S200 of providing an initial refractive layer, a step S300 of forming a refractive layer, and a step S400 of forming a protective layer. The step S400 of forming a protective layer can include a step S410 of forming an initial protective layer by an inkjet coating method, and a step S420 of curing the initial protective layer.

[0154] Referring to Figure 6 , in the step of providing an initial display device PDD, the initial display device PDD includes a display area AA and a peripheral area NAA arranged adjacent to the display area AA, and includes a base layer BS, a display element layer DP-OLED arranged on the base layer BS and including a light emitting element overlapping the display area AA on a plane, and color filters CF-R, CF-G, CF-B arranged on the display element layer DP-OLED. The initial display device PDD is distinguished from a display device DD (refer to Figure 3 ) in that it does not include a refractive layer RL (refer to Figure 3 ) and a protective layer PL (refer to Figure 3 ).

[0155] Referring to Figure 6 and Figure 7 , in the step of forming an initial refractive layer PRL, the initial refractive layer PRL is formed on the color filters CF-R, CF-G, CF-B. The initial refractive layer PRL covers the color filters CF-R, CF-G, CF-B. The initial refractive layer PRL can be deposited by a solution process such as spin coating, slot coating, and an inkjet process. For example, the initial refractive layer PRL can be formed by an inkjet process. The Young's modulus of the initial refractive layer PRL can be 1 Gpa or more and 10 Gpa or less at 25 degrees Celsius. For example, the Young's modulus of the initial refractive layer PRL can be 1 Gpa or more and 5 Gpa or less at 25 degrees Celsius.

[0156] Referring to Figure 7 and Figure 8 , in the step of forming a refractive layer RL, the refractive layer RL can be formed by etching a portion of the initial refractive layer PRL. The method of etching the initial refractive layer PRL can include a dry etching process, a wet etching process, or a photoresist process. For example, the method of etching the initial refractive layer PRL can be a photoresist process.

[0157] Referring to Figure 9 and Figure 10In the step of forming the initial protective layer PPL by the inkjet coating method, the initial protective layer PPL can be formed by coating the mixed solution SL including the first compound, the second compound, and the third compound on the refractive layer RL. The viscosity of the initial protective layer PPL can be 1 cP or more and 30 cP or less at 20 degrees Celsius. For example, the viscosity of the initial protective layer PPL can be 15 cP at 20 degrees Celsius. If the viscosity of the initial protective layer PPL is 1 cP or more and 30 cP or less at 20 degrees Celsius, the initial protective layer PPL does not excessively spread when the initial protective layer PPL is in contact with the refractive layer RL, so that one end of the initial protective layer PPL can be aligned with the boundary between the display area AA and the non-display area NAA without an additional process, thereby improving the difficulty and economy of the display device manufacturing method.

[0158] In the mixed solution SL, the weight of the second compound can be 0.05% or more and less than 0.2% of the sum of the weight of the first compound, the weight of the second compound, and the weight of the third compound. For example, the weight of the second compound can be 0.05% or more and 0.1% or less of the sum of the weight of the first compound, the weight of the second compound, and the weight of the third compound. For example, the second compound can include 3M TM FC-4430 of 3M Company.

[0159] Table 1 below shows the results of coating 1.5 μm of pure water (DI), solution 1 in which polyhedral oligomeric silsesquioxane (POSS) and FC-4430 product are mixed at 0.1% by weight (based on the total weight), and solution 2 in which polyhedral oligomeric silsesquioxane (POSS) and FC-4430 product are mixed at 0.2% by weight (based on the total weight) on each of a glass substrate and an acrylic resin substrate, respectively, and measuring the contact angle. When the contact angle with the acrylic resin substrate is 20 degrees or more and 30 degrees or less, it is evaluated that the spreadability of the coated solution is excellent. In the present specification, the meaning of excellent spreadability means that, in a target substrate including a first surface and a second surface that is relatively high in height from the first surface, when the solution contacts only the second surface, the solution does not overflow to the first surface, or when 3 minutes elapse from the time when the solution is initially coated, the area where the solution contacts the second surface is not reduced.

[0160] [Table 1]

[0161] Pure water Solution 1 Solution 2 Glass substrate 110.3 degrees 41.9 degrees 35.8 degrees Acrylic resin substrate 137.1 degrees 26.9 degrees 18.1 degrees

[0162] Referring to Table 1 above, since the contact angle of each of Solution 1 and Solution 2 is smaller than that of pure water, the area in contact with each substrate does not excessively increase. Solution 1 has a larger contact angle with respect to each of the glass substrate and the acrylic resin substrate than Solution 2, and in particular, since the contact angle of Solution 1 with respect to the acrylic resin substrate is 26.9 degrees, Solution 1 has superior spreading properties compared to Solution 2. This is explained as being due to the weight ratio of FC-4430 as the surfactant in Solution 1 being in a range, i.e., 0.05% by weight or more and less than 0.2% by weight, that can improve the spreading properties of Solution 1. Referring to Figure 10 and Figure 11 In the step of curing the initial protective layer PPL, the protective layer PL can be formed by curing the initial protective layer PPL by ultraviolet rays UV.

[0163] Unlike the present invention, the conventional initial protective layer has a contact angle with the refractive layer of more than 30 degrees due to not containing the first to third compounds, and the contact area of the refractive layer and the initial protective layer gradually decreases, or has a contact angle with the refractive layer of less than 20 degrees, thus having a problem in that the initial protective layer is formed on other structures other than the refractive layer. In the step of forming the protective layer PL in the display device manufacturing method of the present invention, since the initial protective layer PPL formed by the inkjet coating method is composed of the mixed solution SL containing the first to third compounds, the contact angle with the refractive layer RL is 20 degrees or more and 30 degrees or less, thus improving the spreading properties.

[0164] The display device DD manufacturing method of one embodiment can further include, after the protective layer PL is formed, a step of forming a sealing member SLM on the base layer BS, a step of forming a filling layer FM in a space between the sealing member SLM and the protective layer PL, and a step of forming a window WM on the sealing member SLM, the filling layer FM, and the protective layer PL.

[0165] The above has been described with reference to the preferred embodiments of the present invention, but it will be understood by those skilled in the art or those having ordinary knowledge in the art that various modifications and changes can be made to the present invention within the scope of the idea and technical field of the present invention recited in the appended claims, without departing from the scope of the present invention. Therefore, the technical scope of the present invention is not limited to the contents recited in the detailed description of the specification, but should be determined by the claims.

Claims

1. A display device comprising a display region and a peripheral region arranged adjacent to the display region, and comprising: a base layer; a display element layer arranged on the base layer, and comprising a light-emitting element overlapping the display region in a plan; a color filter arranged on the display element layer; a refractive layer arranged on the color filter; and a protective layer arranged on the refractive layer, the refractive layer comprising: a cover layer covering the color filter; and a convex pattern arranged between the cover layer and the protective layer, and forming an integral shape with the cover layer, an end of the protective layer aligning with a boundary between the display region and the peripheral region in a plan.

2. The display device according to claim 1, wherein the display device further comprises: a filling layer arranged on the base layer, and overlapping the protective layer in a first direction.

3. The display device according to claim 2, wherein the filling layer is in contact with the end of the protective layer.

4. The display device according to claim 1, wherein a thickness of the protective layer is 20 μm or more and 500 μm or less.

5. The display device according to claim 1, wherein the display device further comprises: a window arranged on the protective layer; and a sealing member arranged between the base layer and the window, the protective layer being spaced apart from the sealing member in a first direction.

6. The display device according to claim 1, wherein the convex pattern overlaps the light-emitting element in a plan.

7. The display device according to claim 1, wherein the light-emitting element is provided as a plurality, and the convex pattern is provided as a plurality.

8. The display device according to claim 1, wherein a refractive index of the refractive layer is 1.6 or more.

9. The display device according to claim 1, wherein the refractive layer comprises an acrylic resin.

10. The display device according to claim 1, wherein the display region comprises a first display region and a second display region spaced apart from the first display region in a plan, the first display region and the second display region each independently comprise a rectangular shape or a circular shape.

11. The display device according to claim 1, wherein the light-emitting element comprises: a first electrode; a light-emitting layer arranged on the first electrode; and a second electrode arranged on the light-emitting layer.

12. A display device comprising a display region and a peripheral region arranged adjacent to the display region, and comprising: a base layer; a display element layer arranged on the base layer, and comprising a light-emitting element overlapping the display region in a plan; a color filter arranged on the display element layer; a refractive layer arranged on the color filter; and a protective layer arranged on the refractive layer, the refractive layer comprising: a cover layer covering the color filter; and a convex pattern arranged between the cover layer and the protective layer, and forming an integral shape with the cover layer, the protective layer comprising: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ a first compound including at least one of a polysilsesquioxane compound, a polyurethane compound, a polycarbonate compound, and a polyethylene terephthalate compound; a second compound including a surfactant including at least one of a fluorine-containing compound and a silicon-containing compound; and a third compound including an epoxy compound, a weight of the second compound is 0.05% or more and less than 0.2% of a sum of a weight of the first compound, a weight of the second compound, and a weight of the third compound.

13. The display device according to claim 12, wherein one end of the protective layer is aligned with a boundary between the display region and the peripheral region in a plane.

14. The display device according to claim 12, wherein the first compound includes at least one of a first polysilsesquioxane compound to a seventh polysilsesquioxane compound represented by the following Chemical Formula 1 to Chemical Formula 7, respectively: [Chemical Formula 1] in the Chemical Formula 1 to the Chemical Formula 7, X is R 41 or [(SiO 3 / 2 R 42 ) 4+2n O] Y1and Y2are each independently O, NR 51 or [(SiO 3 / 2 R 52 ) 4+2n' O], R 11 , R 12 , R 21 to R 24 , R 31 to R 34 , R a1 , R a2 , R b1 to R b5 , R c1 to R c4 , R 41 , R 42 , R 51 and R 52 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted amine group, a substituted or unsubstituted epoxy group, a nitro group, a nitrile group, a mercapto group, an isocyanate group, a substituted or unsubstituted alkyl group having a carbon number of 1 or more and 20 or less, a substituted or unsubstituted alkenyl group having a carbon number of 2 or more and 20 or less, a substituted or unsubstituted alkoxy group having a carbon number of 1 or more and 40 or less, a substituted or unsubstituted aliphatic heterocyclic group having a ring-constituting carbon number of 2 or more and 30 or less, a substituted or unsubstituted aromatic group having a ring-constituting carbon number of 6 or more and 30 or less, a substituted or unsubstituted heteroaromatic group having a ring-constituting carbon number of 2 or more and 30 or less, a substituted or unsubstituted aryloxy group having a ring-constituting carbon number of 3 or more and 30 or less, or a substituted or unsubstituted arylmercapto group having a ring-constituting carbon number of 3 or more and 30 or less, n and n' are each independently an integer of 1 or more and 20 or less, a is an integer of 1 or more and 100000 or less, b, b', c, and c' are each independently an integer of 1 or more and 100 or less.

15. The display device according to claim 12, wherein the epoxy compound includes a viscosity modifier.

16. A display device manufacturing method comprising: a step of providing an initial display device including a display region and a peripheral region arranged adjacent to the display region, and including a base layer, a display element layer arranged on the base layer, and including a light emitting element overlapping the display region in a plane, and a color filter arranged on the display element layer; a step of forming an initial refractive layer on the color filter; a step of etching a part of the initial refractive layer to form a refractive layer; and a step of forming a protective layer on the refractive layer, the refractive layer includes a cover layer covering the color filter, and a convex pattern arranged between the cover layer and the protective layer, and having a shape integrated with the cover layer, one end of the protective layer is aligned with a boundary between the display region and the peripheral region in a plane.

17. The display device manufacturing method according to claim 16, wherein the step of forming the protective layer includes: forming an initial protective layer containing a first compound, a second compound, and a third compound by an inkjet coating method; and a step of curing the initial protective layer, the first compound includes at least one of a polysilsesquioxane compound, a polyurethane compound, a polycarbonate compound, and a polyethylene terephthalate compound, the second compound includes a surfactant including at least one of a fluorine-containing compound and a silicon-containing compound, the third compound includes an epoxy compound, a weight of the second compound is 0.05% or more and less than 0.2% of a sum of a weight of the first compound, a weight of the second compound, and a weight of the third compound.

18. The display device manufacturing method according to claim 17, wherein the viscosity of the initial protective layer is 1 cP or more and 30 cP or less at 20 degrees Celsius.

19. The display device manufacturing method according to claim 16, wherein the Young's modulus of the initial refractive layer is 1 Gpa or more and 10 Gpa or less at 25 degrees Celsius.

20. The display device manufacturing method according to claim 17, wherein the weight of the second compound is 0.05% or more and 0.1% or less of the sum of the weight of the first compound, the weight of the second compound, and the weight of the third compound.

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