Display device

Abstract

The invention relates to a display device. The display device includes: a display panel having different first and second regions on one surface; and a coating layer on one surface of the display panel, the coating layer including a light blocking pad portion in a first region and a first supporting portion in a second region located on one side of the first region to support the display panel.

Description

Technical Field

[0001] Aspects of the present disclosure relate to a display device and a method of manufacturing the display device. Background Art

[0002] With the development of multimedia, the importance of display devices is increasing.

[0003] Such display devices include liquid crystal displays (LCDs) and organic light emitting displays (OLEDs).

[0004] An organic light emitting display device includes a display panel including an organic light emitting element.

[0005] In an organic light emitting display device, a cathode electrode and an anode electrode are arranged around an organic light emitting layer, and when a voltage is applied to the two electrodes, visible light is generated from the organic light emitting layer connected to the two electrodes.

[0006] Organic light emitting display devices are widely used in portable electronic devices such as smart phones, and thus are often exposed to external impacts.

[0007] Additionally, if excessive heat is generated from the organic light emitting display device or a driver chip driving the organic light emitting display device, there is a risk that the organic light emitting display device may be damaged.

[0008] In order to protect the display device from these hazards, a cover panel having functions such as light blocking, impact resistance, support, and heat dissipation is provided at the bottom of the display panel.

[0009] The cover panel may be manufactured in the form of a film and attached to the display panel.

[0010] However, due to tolerances of the film itself and the lamination process, dead spaces may occur, and if the structure or shape of the display panel is changed, the existing film is difficult to use and must be discarded.

[0011] The above information disclosed in this Background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art. Summary of the Invention

[0012] Embodiments of the present disclosure relate to a display device and a method for manufacturing the display device, which can reduce material costs, effectively ensure desired characteristics at each position of a display panel, and easily control the thickness, size, and / or shape of a coating layer.

[0013] The technical problems of the present disclosure are not limited to the above-mentioned technical problems, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

[0014] According to some embodiments of the present disclosure, a display device is provided, including: a display panel having different first and second areas on one surface; and a coating, on one surface of the display panel, the coating including a light-blocking pad portion in the first area and a first supporting portion in the second area located on one side of the first area to support the display panel.

[0015] In some embodiments, the light blocking pad portion and the first supporting portion have different thicknesses.

[0016] In some embodiments, the coating further includes a second support portion on the light blocking pad portion.

[0017] In some embodiments, the coating layer has a shape in which the thickness of the coating layer gradually decreases from one end toward the outside.

[0018] In some embodiments, the coating layer has a rounded shape at one corner region in a plane parallel to one surface of the display panel.

[0019] In some embodiments, the light-blocking pad portion includes a first material mixed with an elastic material and a light-blocking material, the elastic material includes at least one of silicon, ethyl carbamate, epoxy acrylate, and polyethylene, and the light-blocking material includes at least one of graphene oxide (GO), reduced graphene oxide (RGO), aluminum, carbon black (CB), and copper (Cu).

[0020] In some embodiments, the first support portion includes a second material including at least one of silicon, urethane, epoxy acrylate, and polyethylene.

[0021] In some embodiments, the display panel includes a bending region on one surface adjacent to the first region.

[0022] In some embodiments, the first region is located on one side of the bending region in the first direction, and the second region is located on the other side of the bending region in the first direction.

[0023] In some embodiments, a display panel includes a substrate exposed on one surface and including glass.

[0024] In some embodiments, the substrate includes: a through hole etched in the bending region, a first substrate located on one side of the through hole in a first direction, and a second substrate located on the other side of the through hole in the first direction.

[0025] In some embodiments, a display panel includes a substrate exposed on one surface and including a polyimide resin.

[0026] According to some embodiments of the present disclosure, a display device is provided, including: a display panel; and a coating layer on one side of the display panel, the coating layer including a light blocking pad portion on the side of the display panel and a supporting portion on the light blocking pad portion to support the display panel.

[0027] In some embodiments, the light-blocking pad portion includes a first material mixed with an elastic material and a light-blocking material, the elastic material includes at least one of silicon, ethyl carbamate, epoxy acrylate, and polyethylene, and the light-blocking material includes at least one of graphene oxide (GO), reduced graphene oxide (RGO), aluminum, carbon black (CB), and copper (Cu).

[0028] In some embodiments, the support portion includes a second material including at least one of silicon, urethane, epoxy acrylate, and polyethylene.

[0029] According to some embodiments of the present disclosure, a method for manufacturing a display device is provided, the method including: providing a substrate having different first and second regions on one surface; forming a display layer on the other side of the substrate, and forming a thin film encapsulation layer on the display layer; forming a light blocking pad portion in the first region of the substrate by an inkjet printing process, and forming a first supporting portion in the second region of the substrate by an inkjet printing process to form a coating.

[0030] In some embodiments, the forming of the light blocking pad portion includes forming the light blocking pad portion to have a different thickness from the first supporting portion.

[0031] In some embodiments, the forming of the coating layer further includes forming a second supporting portion on the light blocking pad portion.

[0032] In some embodiments, forming the coating layer includes: forming a light-blocking pad portion using a first material mixed with an elastic material and a light-blocking material, the elastic material including at least one of silicon, urethane, epoxy acrylate, and polyethylene, and the light-blocking material including at least one of graphene oxide (GO), reduced graphene oxide (RGO), aluminum, carbon black (CB), and copper (Cu); and forming a first supporting portion using a second material, the second material including at least one of silicon, urethane, epoxy acrylate, and polyethylene.

[0033] According to some embodiments of the present disclosure, a method for manufacturing a display device is provided, the method including: providing a substrate having different first and second regions on one surface; forming a display layer on the other side of the substrate, and forming a thin film encapsulation layer on the display layer; forming a light-blocking pad portion in the first and second regions of the substrate by an inkjet printing process; and forming a supporting portion including a material different from the light-blocking pad portion on the light-blocking pad portion by an inkjet printing process to form a coating.

[0034] According to some embodiments, the material cost of a display device can be reduced, desired characteristics of each position of a display panel can be effectively ensured, and the thickness, size, shape, etc. of a coating layer can be easily controlled.

[0035] Other aspects, features, and characteristics not described above will become more clearly understood from the accompanying drawings, claims, and detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Non-limiting and non-exhaustive embodiments according to the present disclosure are described with reference to the following figures, wherein like reference numerals refer to like parts throughout the various views unless otherwise specified.

[0037] Figure 1 A perspective view illustrating a display device according to some embodiments of the present disclosure.

[0038] Figure 2 According to some embodiments of the present disclosure Figure 1 sectional view of the display device taken along line II-II'.

[0039] Figure 3 is a plan view of a display device according to some embodiments of the present disclosure.

[0040] Figure 4 is a plan view illustrating a coating according to some embodiments of the present disclosure.

[0041] Figure 5 is a cross-sectional view illustrating a coating according to some embodiments of the present disclosure.

[0042] Figure 6 and Figure 7 A diagram illustrating a portion of the back side of a display device according to some embodiments of the present disclosure.

[0043] Figure 8 According to some other embodiments of the present disclosure Figure 1 sectional view of the display device taken along line II-II'.

[0044] Figure 9 is a plan view of a display device according to some other embodiments of the present disclosure.

[0045] Figure 10 According to some other embodiments of the present disclosure Figure 1 sectional view of the display device taken along line II-II'.

[0046] Figure 11 is a plan view of a display device according to some other embodiments of the present disclosure.

[0047] Figure 12 According to some other embodiments of the present disclosure Figure 1 sectional view of the display device taken along line II-II'.

[0048] Figure 13 is a plan view of a display device according to some other embodiments of the present disclosure.

[0049] Figure 14 is a cross-sectional view of a display device according to a modified embodiment.

[0050] Figure 15 According to some other embodiments of the present disclosure Figure 1 sectional view of the display device taken along line II-II'.

[0051] Figure 16 is a plan view of a display device according to some other embodiments of the present disclosure.

[0052] Figure 17 According to some other embodiments of the present disclosure Figure 1 sectional view of the display device taken along line II-II'.

[0053] Figure 18 is a plan view of a display device according to some other embodiments of the present disclosure.

[0054] Figure 19 is a flowchart illustrating a method of manufacturing a display device according to some embodiments of the present disclosure.

[0055] Figure 20 To illustrate some embodiments of the present disclosure Figure 19 FIG. 5 is a cross-sectional view of the process S130 .

[0056] Figure 21 To illustrate some embodiments of the present disclosure Figure 19 FIG. 5 is a cross-sectional view of process S140 .

[0057] Figure 22 is a flowchart illustrating a method of manufacturing a display device according to some other embodiments of the present disclosure.

[0058] Figure 23 and Figure 24 To illustrate some other embodiments of the present disclosure Figure 22 A cross-sectional view of process S230 is shown.

[0059] Description of some reference numerals

[0060] 1: Display device

[0061] PNL: Display Panel

[0062] TH: Through Hole

[0063] SUB, SUB': Substrate

[0064] DL: Display Layer

[0065] TFE: Thin film encapsulation layer

[0066] TSP: Touch electrode layer

[0067] 100: coating

[0068] 101: Light-blocking pad part

[0069] 103: First support part

[0070] 105: Second support part

[0071] HD1, HD2: first inkjet head and second inkjet head

[0072] FA: Flat part

[0073] SA: inclined part DETAILED DESCRIPTION

[0074] By referring to the embodiments described in detail below and the accompanying drawings, aspects and features of the present disclosure and methods for achieving them will become clear. However, the present disclosure is not limited to the embodiments disclosed below and will be implemented in various forms. The embodiments are only used to ensure that the content of the present disclosure is complete and do not limit the common knowledge in the technical field to which the present disclosure belongs. At the same time, the embodiments are provided to fully inform those with common knowledge in the field of the present disclosure of the scope of the present invention. The present disclosure is limited only by the scope of the claims.

[0075] In view of the overall disclosure, those skilled in the art will recognize that each appropriate feature of the various embodiments of the present disclosure may be combined with each other in part or in whole, and may be technically interlocked and operated in various appropriate ways, and unless otherwise stated or implied, each embodiment may be implemented independently of each other or in combination with each other in any appropriate manner.

[0076] In the present disclosure, processes, elements, and techniques that are not necessary for a person of ordinary skill in the art to fully understand the aspects and features of the present disclosure may not be described or may be simply described. In the drawings, the relative sizes of elements, layers, and regions may be exaggerated for clarity.

[0077] It will be understood that although the terms "first," "second," "third," etc. may be used herein to describe various elements, components, regions, layers, and / or portions, these elements, components, regions, layers, and / or portions should not be limited by these terms. These terms are used to distinguish one element, component, region, layer, or portion from another element, component, region, layer, or portion. Thus, a first element, first component, first region, first layer, or first portion discussed below may be referred to as a second element, second component, second region, second layer, or second portion without departing from the spirit and scope of the present inventive concept.

[0078] For ease of description, spatially relative terms such as "below," "beneath," "below," "above," and "on" may be used herein to describe the relationship of one element or feature to another element or feature as illustrated in the figures. It will be understood that, in addition to the orientations depicted in the figures, spatially relative terms are also intended to encompass different orientations of the device in use or operation. For example, if the device in the figure is turned over, an element described as being "below," "below," or "below" other elements or features will then be oriented "above" the other elements or features. Thus, the example terms "below" and "below" may encompass both orientations of above and below. The device can be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein should be interpreted accordingly. In addition, it will also be understood that when a layer is referred to as being "between" two layers, it may be the only layer between the two layers, or one or more intervening layers may also be present.

[0079] The terms used herein are for the purpose of describing particular embodiments and are not intended to limit the inventive concept. As used herein, unless the context clearly indicates otherwise, the single forms "a" and "an" are intended to include the plural forms as well. It will be further understood that when used in this specification, the terms "include," "including," "comprises," "comprising," "has," "have," and "having" indicate the presence of recited features, integers, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0080] As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. For example, the expression "A and / or B" means A, B, or A and B. Expressions such as "one or more of" and "at least one of," when following a list of elements, modify the entire list of elements and do not modify the individual elements of the list. For example, the expressions "one or more of A, B, and C," "at least one of A, B, and C," and "at least one selected from the group consisting of A, B, and C" mean only A, only B, only C, both A and B, both A and C, both B and C, or all of A, B, and C.

[0081] Further, when describing embodiments of the present inventive concepts, the use of “may” refers to “one or more embodiments of the present inventive concepts.” Also, the term “exemplary” is intended to indicate an example or illustration.

[0082] It will be understood that when an element or layer is referred to as being “on,” “connected to,” “coupled to,” or “adjacent to” another element or layer, it can be directly on, directly connected to, directly coupled to, or directly adjacent to the other element or layer, or one or more intervening elements or layers may be present. When an element or layer is referred to as being “directly on,” “directly connected to,” “directly coupled to,” “contacting,” “directly in contact with,” or “directly adjacent to” another element or layer, there are no intervening elements or layers.

[0083] As used herein, the terms "substantially," "about," and similar terms are used as terms of approximation and not as terms of degree, and are intended to take into account the inherent deviations in measurements or calculations that one of ordinary skill in the art would recognize. Further, if the term "substantially" is used in conjunction with a feature that can be expressed using a numerical value, the term "substantially" refers to a range of values ​​centered around that value of ±5%. In addition, the specific numbers or ranges recited in this written description or claims may also encompass the inherent deviations in measurements or calculations that one of ordinary skill in the art would recognize.

[0084] As used herein, the terms "use," "using," and "used" may be considered synonymous with the terms "utilize," "utilizing," and "utilized," respectively.

[0085] Hereinafter, specific embodiments will be described with reference to the accompanying drawings.

[0086] Figure 1 A perspective view illustrating a display device according to some embodiments of the present disclosure.

[0087] Figure 1The display device 1 is shown unfolded at the folding line.

[0088] refer to Figure 1 The display device 1 according to some embodiments is a device that displays moving images or still images and is used for mobile phones, smart phones, tablet personal computers, smart watches, watch phones, mobile communication terminals, electronic notebooks, and other electronic devices, and it can be used as a display screen for various products (such as televisions, laptop computers, monitors, billboards, and IoT devices) and portable electronic devices (such as e-books, portable media players (PMPs), navigation devices, and ultra mobile personal computers (UMPCs)).

[0089] The display device 1 has a three-dimensional shape.

[0090] In the drawings, a direction parallel to a first side (e.g., a horizontal side) of the display device 1 is referred to as a first direction DR1, and a direction parallel to a second side (e.g., a vertical side) of the display device 1 is referred to as a second direction DR2, and a direction parallel to a thickness direction of the display device 1 is indicated as a third direction DR3. In the following description, unless otherwise indicated, a "direction" may refer to two directions extending in that direction. In addition, if it is necessary to distinguish between two "directions" extending to both sides, one side will be referred to as "one side direction", and the other side will be referred to as "the other side direction". Based on Figure 1 , the direction pointed by the arrow is referred to as one side, and the opposite direction is referred to as the other side. The first to third directions DR1 to DR3 may be perpendicular to each other, but are not limited thereto.

[0091] like Figure 1 As shown in FIG, the planar shape of the display device 1 has a rectangular shape such that horizontal sides are shorter than vertical sides, and each corner of the display device 1 has a right-angled planar shape or a circular planar shape, but is not limited thereto.

[0092] Display panel PNL (see, Figure 2 ) includes a main area MA, a bending area BA and a sub-area SBA.

[0093] The main area MA is the display panel PNL (see, Figure 2 ) and may be disposed on one side of the second direction DR2. The sub-area SBA is a portion of the display panel PNL and may be disposed on the other side of the second direction DR2. The sub-area SBA may be an area extending from one side of the bending area BA. A display driver and a pad portion connected to a circuit board may be disposed in the sub-area SBA.

[0094] The sub-area SBA may include a flexible material capable of bending, folding, curling, etc. For example, when the sub-area SBA is bent, the sub-area SBA may overlap with the main area MA in the thickness direction (e.g., the third direction DR3). The bending area BA may be a bendable area. The bending area BA may be positioned between the main area MA and the sub-area SBA. That is, the main area MA may be positioned on one side of the bending area BA in the second direction DR2, and the sub-area SBA may be positioned on the other side of the bending area BA in the second direction DR2.

[0095] The bending area BA may be an area defined by a first bending line BL1 and a second bending line BL2. The first bending line BL1 and the second bending line BL2 may be lines that guide the bending position of the bending area BA. The first bending line BL1 may be the boundary between the main area MA and the bending area BA, and the second bending line BL2 may be the boundary between the sub-area SBA and the bending area BA. The first bending line BL1 and the second bending line BL2 may extend in the first direction DR1, but are not limited thereto.

[0096] When the bending area BA is not bent, the display device 1 remains as Figure 1 The display device 1 can be in the unfolded state shown in FIG (hereinafter referred to as the “first state”), and when the bending area BA is bent, the display device 1 can be kept in the folded state (hereinafter referred to as the “second state”).

[0097] The display device 1 can be transformed from the first state to the second state by folding along the first bending line BL1 and the second bending line BL2 in the second direction DR2 , thereby reducing the length of the display device 1 in the second direction DR2 and making it easier for users to carry the display device 1 .

[0098] The display device 1 includes a display area DA and a non-display area NDA.

[0099] The display area DA may be an area where pixels are arranged to display an image. The non-display area NDA may be an area that does not display an image and is not capable of displaying an image. In the first state of the display device 1, one side of the display device 1 in the third direction DR3 is the front side where the display area DA and the non-display area NDA are arranged, and the other side of the display device 1 in the third direction DR3 may be the back side of the display device 1. The coating layer 100 (see, Figure 2 ) can be located on the other side of the display device 1. Figure 1As shown in FIG, in the first state of the display device 1, the display area DA is provided on one side of the display device 1 in the third direction DR3 and includes the main area MA, the bending area BA, and the sub-area SBA. That is, in the first state of the display device 1, one side of the main area MA, the bending area BA, and the sub-area SBA in the third direction DR3 is the front side where the display area DA is provided, and the other side in the third direction DR3 may be the back side where the display area DA is not provided. The planar shape of the display area DA may follow the planar shape of the display device 1 in the first state. For example, when the planar shape of the display device 1 in the first state is rectangular, the planar shape of the display area DA may also be rectangular.

[0100] The non-display area NDA may be arranged around the display area DA. The non-display area NDA may be arranged to surround the display area DA, but is not limited thereto. For example, the display area DA may be partially surrounded by the non-display area NDA.

[0101] For example, the display device 1 may be folded using an outward folding method so that the back surfaces face each other, but the display device 1 is not limited thereto. For example, the display device 1 may be folded using a folding method so that the portion of the display area DA overlapping the main area MA and the portion of the display area DA overlapping the sub-area SBA face each other.

[0102] The display pads may be provided in the non-display area NDA to be connected to the circuit board. The display pads may be provided on the display panel PNL (see, Figure 2 ). For example, the display pad may be provided at a lower edge of the display panel PNL.

[0103] A driver integrated circuit (IC) may be provided in an area between the display pad in the non-display area NDA and the display area DA. Each of the driver ICs may be attached to the display panel PNL using a chip on glass (COG) method (see, Figure 2 In some embodiments, each of the driver ICs may be attached to the circuit board using a chip on plastic (COP) method.

[0104] The driver IC can generate data voltage, power supply voltage, scan timing signal, etc. The driver IC can output data voltage, power supply voltage, scan timing signal, etc. The circuit board can be set on the display pad (set on the display panel PNL (see, Figure 2 ) on one edge of the display panel. The circuit board can be attached to the display pad using a conductive adhesive member (e.g., an anisotropic conductive film and an anisotropic conductive adhesive). Thus, the circuit board can be electrically connected to the signal line of the display panel PNL. The circuit board can be a flexible printed circuit board or a flexible film, such as a chip on film.

[0105] Reference below Figures 2 to 7, coatings according to some embodiments will be described.

[0106] Figure 2 According to some embodiments of the present disclosure Figure 1 A cross-sectional view of the display device taken along line II-II'; Figure 3 is a plan view of a display device according to some embodiments of the present disclosure; Figure 4 is a plan view illustrating a coating according to some embodiments of the present disclosure; and Figure 5 is a cross-sectional view illustrating a coating according to some embodiments of the present disclosure. Figure 5 It can be taken along a plane parallel to the third direction DR3 Figure 1 1 is a cross-sectional view of a portion of the display device 1. Figure 3 1 is a plan view showing the rear surface of the display device 1 viewed from the other side in the third direction DR3 . Figure 4 3 is a plan view showing the rear main area of ​​the display device 1 as seen from the other side in the third direction DR3 .

[0107] refer to Figure 2 and Figure 3 , the display panel PNL may include a substrate SUB, a display layer DL, a thin film encapsulation layer TFE, and a touch electrode layer TSP in a stacking order.

[0108] The substrate SUB may serve to support several layers included in the display panel PNL at the base of the display panel PNL.

[0109] The substrate SUB may be made of a hard material. For example, the substrate SUB may be made of glass. The substrate SUB may be made of ultra-thin glass (UTG) having a thickness of about 500 μm or less.

[0110] The substrate SUB may have a through hole TH etched in the etched bending area BA. The substrate SUB may include a first substrate SUB1 on one side of the through hole TH in the second direction DR2 and a second substrate SUB2 on the other side of the through hole TH in the second direction DR2.

[0111] The substrate SUB may have one surface on which the coating layer 100 is provided, and another surface opposite to the one surface in the third direction DR3 on which the display layer DL is provided. The display layer DL may be a layer that displays an image. The display layer DL may include a thin film transistor layer in which thin film transistors are formed and a light emitting device layer in which light emitting devices emitting light are provided in a light emitting region.

[0112] In the display area DA of the display layer DL, scan lines, data lines, power lines, and the like for emitting light from the light-emitting area may be provided. In the non-display area NDA of the display layer DL, a scan driving circuit unit for outputting scan signals to the scan lines and fan-out lines for connecting the data lines to a driver IC may be provided.

[0113] The thin film encapsulation layer (TFE) may be used to prevent or substantially block external moisture and oxygen from penetrating into the light-emitting device layer of the display layer DL. The thin film encapsulation layer (TFE) may be disposed on the display layer DL. The thin film encapsulation layer (TFE) may be disposed on the top and side surfaces of the display layer DL. The thin film encapsulation layer (TFE) may be disposed to cover the display layer DL.

[0114] The thin film encapsulation layer TFE may include at least one organic layer and one or more inorganic layers. The at least one organic layer and the one or more inorganic layers may be alternately stacked with each other.

[0115] The touch electrode layer TSP can recognize the user's hand movements. For example, the touch electrode layer TSP can recognize the user's hand movements using a self-capacitance method or a mutual capacitance method. The touch electrode layer TSP is disposed on the thin film encapsulation layer TFE and can be disposed in the display area DA and the non-display area NDA.

[0116] The touch electrode layer TSP may include a touch protection layer, at least one conductive layer, and at least one insulating layer. One or more conductive layers and one or more insulating layers may be stacked one on top of the other. The touch protection layer may be an organic layer. For example, the touch protection layer may include at least one of an acrylic resin, a silicone resin, and a polyimide resin.

[0117] The touch electrode layer TSP may have the same planar shape as the thin film encapsulation layer TFE. That is, the touch electrode layer TSP and the thin film encapsulation layer TFE may completely overlap in the third direction DR3. Depending on the platform of the display device 1, the touch electrode layer TSP may be omitted.

[0118] In addition, a polarization member may be provided on the display panel PNL. The polarization member may be used to improve display quality by polarizing light incident from the outside into the display area DA of the display panel PNL. The polarization member may be provided on the touch electrode layer TSP (or, if the touch electrode layer TSP is omitted, on the thin film encapsulation layer TFE). The polarization member may be provided in both the display area DA and the non-display area NDA and may have a planar shape substantially the same as that of the main area MA of the display panel PNL, but is not limited thereto. For example, the polarization member may be provided only in the display area DA and not in the non-display area NDA.

[0119] In addition, a window cover may be placed on the polarizing member. The window cover may be used to protect the components inside the display panel PNL from external influences. The window cover may be made of glass, sapphire, and / or plastic, etc. The window cover may be a transparent adhesive film containing an ultraviolet curable material that transmits visible light. The coating 100 may be provided on the back side of the display panel PNL. For example, because the substrate SUB is located at the bottom of the display panel PNL in the third direction DR3, the coating 100 may be located on the back side of the substrate SUB. The display panel PNL may have different first and second areas A1 and A2 on the back side. For example, because the substrate SUB is located at the bottom of the display panel PNL in the third direction DR3, different first and second areas A1 and A2 are formed on the back side of the substrate SUB. The substrate SUB may be exposed from the back side of the display panel PNL.

[0120] The coating layer 100 may cover at least a portion of the rear surface of the display panel PNL. The coating layer 100 may be disposed to expose at least a portion of the display panel PNL.

[0121] In some embodiments, the coating 100 can be formed by an inkjet printing process. For example, the coating 100 can be formed by passing an inkjet head (e.g., Figure 20 , HD1 / HD2) applies ink on the display panel PNL and cures it to form a coating layer 100. The coating layer 100 can be cured by at least one of ultraviolet curing, thermal curing, and natural curing. The coating layer 100 can be cured in situ or post-cured.

[0122] The coating layer 100 may include a light blocking pad portion 101 and a first supporting portion 103. The light blocking pad portion 101 may be disposed in the first area A1. The first supporting portion 103 may be disposed in the second area A2. The light blocking pad portion 101 and the first supporting portion 103 may include different materials.

[0123] The light blocking pad portion 101 may be arranged to block at least a portion of light incident on the display panel PNL. The first supporting portion 103 may be provided in the second area A2 to support the display panel PNL. The second area A2 may be located at one side of the first area A1.

[0124] The first area A1 may be located on one side of the bending area BA in the second direction DR2. The second area A2 may be located on the other side of the bending area BA in the second direction DR2. Accordingly, the light-blocking pad portion 101 and the first supporting portion 103 may be arranged to face each other in the second direction DR2. The bending area BA may be positioned adjacent to the first area A1. The bending area BA may be positioned adjacent to the second area A2. The bending area BA may be positioned between the first area A1 and the second area A2 in the second direction DR2.

[0125] exist Figure 2 and Figure 3, the first area A1 is shown as having a similar size to the main area MA, but this is only an example, and the first area A1 overlaps with the light blocking pad portion 101 in the main area MA, and depending on the purpose and use of the display device 1, the area where the light blocking pad portion 101 is placed may be smaller than or larger than the main area MA.

[0126] And, in Figure 2 and Figure 3 , the first area A1 is shown as a single one, but this is only an example, and the first area A1 is an area where the light blocking pad portion 101 is placed in the main area MA, and depending on the purpose and use of the display device 1, the first area A1 can be provided in a single or multiple form at any position in the main area MA of the display panel PNL.

[0127] exist Figure 2 and Figure 3 , the second area A2 is shown to have a similar size to the sub-area SBA, however, this is only an example, and the second area A2 overlaps with the first supporting portion 103 in the sub-area SBA, and depending on the purpose and use of the display device 1, the area where the first supporting portion 103 is placed may be smaller or larger than the sub-area SBA. Figure 2 and Figure 3 , the second area A2 is shown in a single form, but this is only an example, and the second area A2 is an area in which the first supporting portion 103 is placed in the sub-area SBA, and depending on the purpose and use of the display device 1, the second area A2 can be provided in a single or multiple form in any area of ​​the sub-area SBA on the back side of the display panel PNL.

[0128] The periphery of the coating layer 100 may be disposed adjacent to the periphery of the display panel PNL. The periphery of the coating layer 100 may be located inside the periphery of the display panel PNL, but is not limited thereto. The circumferential shape of the coating layer 100 may correspond to the circumferential shape of the display panel PNL. For example, referring to Figure 4 In a plane parallel to one surface of the display panel PNL, the coating layer 100 may have a rounded shape at one corner region. In other words, in a plane perpendicular to the third direction DR3 (i.e., in a plan view), the light blocking pad portion 101 may have a rounded shape at one corner region. In addition, in a plane perpendicular to the third direction DR3 (i.e., in a plan view), the first supporting portion 103 may have a rounded shape at one corner region.

[0129] refer to Figure 5 , the coating layer 100 may include a flat portion FA and an inclined portion SA.

[0130] The flat portion FA may occupy most of the area of ​​the coating 100. The top surface of the flat portion FA of the coating 100 may be flat. The thickness of the flat portion FA of the coating 100 may be substantially constant. Here, constant thickness may mean that the thickness difference of the coating 100 is within about ±6% of the average thickness.

[0131] The inclined portion SA may be provided around the display panel PNL and adjacent to the through hole TH of the substrate SUB. The inclined portion SA may be formed at an edge region of the coating layer 100. The upper surface of the inclined portion SA may be an inclined surface. The inclined surface may be curved in a cross-sectional view, but is not limited thereto and may also be straight in some examples.

[0132] The thickness of the inclined portion SA of the coating 100 may decrease as it approaches the circumference of the display panel PNL and may decrease as it approaches the through hole TH of the substrate SUB. The thickness of the inclined portion SA may increase as it approaches the flat portion FA. The coating 100 may have a shape in which the thickness of the coating 100 gradually decreases from one end toward the outside. In a cross-section perpendicular to one side of the display panel PNL, the coating 100 may have a shape in which the thickness of the coating 100 gradually decreases in the third direction DR3 as the coating 100 moves outward in the second direction DR2.

[0133] Specifically, refer to Figure 2 and Figure 3 The light-blocking pad portion 101 may have a shape in which the thickness of the light-blocking pad portion 101 gradually decreases from one end toward the outside. In a cross-section perpendicular to one side of the display panel PNL, the light-blocking pad portion 101 may have a shape in which the thickness of the light-blocking pad portion 101 gradually decreases in the third direction DR3 as the light-blocking pad portion 101 moves outward in the second direction DR2. As an example, the thickness of the light-blocking pad portion 101 may be 10 μm to 130 μm.

[0134] Additionally, the first supporting portion 103 may have a shape in which the thickness of the first supporting portion 103 gradually decreases from one end toward the outside. In a cross-section perpendicular to one side of the display panel PNL, the first supporting portion 103 may have a shape in which the thickness of the first supporting portion 103 gradually decreases in the third direction DR3 as the first supporting portion 103 moves outward in the second direction DR2. For example, the thickness of the first supporting portion 103 may be 10 μm to 150 μm.

[0135] In some embodiments, the light-blocking pad portion 101 is made of a first material mixed with an elastic material and a light-blocking material. The elastic material may include at least one of silicon, urethane, epoxy acrylate, and polyethylene. The light-blocking material may include at least one of graphene oxide (GO), reduced graphene oxide (RGO), aluminum, carbon black (CB), and copper (Cu). The light-blocking material may be a material having an optical density (OD) of 3.0 or greater. The first material may include a low-viscosity acrylate. The first material may include a nanocomposite in the range of 3 wt % to 50 wt %. For example, the light-blocking pad portion 101 may be formed by curing an ink containing the first material, but is not limited thereto. The light-blocking pad portion 101 may be cured in air (O2) or cured in nitrogen (N2).

[0136] In some embodiments, the first support portion 103 may include a second material, the second material including at least one of silicon, urethane, epoxy acrylate, and polyethylene. The second material may be a high modulus material. The modulus of the second material may be from several MPa to several hundred MPa. The second material may be a low viscosity material of 30 cPs or less. For example, the first support portion 103 may be formed by curing ink containing the second material, but is not limited thereto. The first support portion 103 may be cured in air (O2) or nitrogen (N2).

[0137] Figure 6 and Figure 7 FIG2 is a diagram showing a portion of the back side of a display device according to some embodiments of the present disclosure. Figure 6 According to some embodiments, the first distance G1 may be in the second direction DR2 (see, Figure 2 ) between the light blocking pad portion 101 and the first support portion 103. Figure 7 According to a modified embodiment, the second distance G2 may be in the second direction DR2 (see, Figure 2 ) between the light-blocking pad portion 101 and the first supporting portion 103. The first distance G1 and the second distance G2 may be different. In the display device according to these embodiments, the coating layer 100 can be easily formed by an inkjet printing process at a desired position according to design changes, etc., and thus the distance between the light-blocking pad portion 101 and the first supporting portion 103 can also be easily changed.

[0138] In the past, separate films for light blocking, impact resistance, and support were manufactured to match the shape of the display panel and attached through a lamination process. In this case, when the design was changed, the existing film had to be discarded, resulting in losses. This problem also occurred due to tolerances that occurred during the film attachment process, and dead space was generated.

[0139] In the display device 1 according to the above embodiment, the above-mentioned problem is solved by using an inkjet printing process to form a coating layer 100 for light blocking, impact resistance, and support using materials with different physical properties according to the desired characteristics at each location of the display panel PNL. This reduces material costs, ensures the desired characteristics at each location of the display panel PNL, and forms the coating layer 100 within ±50μm of the edge of the bending area BA.

[0140] Figure 8 According to some other embodiments of the present disclosure Figure 1 A cross-sectional view of the display device taken along line II-II'; and Figure 9 is a plan view of a display device according to some other embodiments of the present disclosure. Figure 9 To illustrate the view from the other side in the third direction DR3 Figure 1 A plan view of the back side of the display device 1.

[0141] according to Figure 8 and Figure 9 A display device according to an embodiment of the present invention Figures 1 to 7 The embodiment of the present invention differs only in the shape and configuration of the coating 100. Figure 8 and Figure 9 In the middle, you can not repeat Figures 1 to 7 The description of the implementation method is repeated.

[0142] refer to Figure 8 and Figure 9 , the coating 100 may include a light-blocking pad portion 101, a first supporting portion 103, and a second supporting portion 105. The light-blocking pad portion 101 may be disposed in the first area A1. The first supporting portion 103 may be disposed in the second area A2. The second supporting portion 105 may be disposed in at least a portion of the first area A1. The second supporting portion 105 may be disposed on the light-blocking pad portion 101. The second supporting portion 105 may be arranged to support the display panel PNL. The light-blocking pad portion 101, the first supporting portion 103, and the second supporting portion 105 may include different materials. As an example, the different materials above may refer to materials having different properties (e.g., transmittance, haze, modulus, or elongation).

[0143] The light blocking pad portion 101 according to some other embodiments may have a different thickness from the first supporting portion 103. Regarding the thickness in the third direction DR3, the thickness of the light blocking pad portion 101 and the thickness of the first supporting portion 103 may be different. The thickness of the first supporting portion 103 may be greater than the thickness of the light blocking pad portion 101.

[0144] In a plane perpendicular to the third direction DR3, the second supporting portion 105 may have a rounded shape at one corner. The second supporting portion 105 may have a shape in which the thickness of the second supporting portion 105 gradually decreases from one end toward the outside. In a cross-section perpendicular to one side of the display panel PNL, the second supporting portion 105 may have a shape in which the thickness of the second supporting portion 105 in the third direction DR3 gradually decreases as the second supporting portion 105 moves outward in the second direction DR2. For example, the thickness of the second supporting portion 105 may be approximately 10 μm to approximately 150 μm.

[0145] In some embodiments, the second support portion 105 may include a second material comprising at least one of silicon, urethane, epoxy acrylate, and polyethylene. The second material may be a high-modulus material. The modulus of the second material may range from several MPa to several hundred MPa. The second material may be a low-viscosity material of 30 cPs or less. For example, the second support portion 105 may be formed by curing ink containing the second material, but is not limited thereto. The second support portion 105 may include the same or substantially the same material as the first support portion 103, but is not limited thereto.

[0146] The second supporting portion 105 may be cured in air (O ​​2 ) or nitrogen (N 2 ).

[0147] In the above-mentioned display device according to some other embodiments, depending on the level of functional requirements such as impact resistance, light blocking and support, the light blocking pad portion 101, the first supporting portion 103 and the second supporting portion 105 can be formed at the desired position in the desired shape and thickness so that the display device can be formed and the desired characteristics of each position of the display panel PNL can be effectively ensured.

[0148] Figure 10 According to some other embodiments of the present disclosure Figure 1 A cross-sectional view of the display device taken along line II-II'; and Figure 11 is a plan view of a display device according to some other embodiments of the present disclosure. Figure 11 To illustrate the view from the other side in the third direction DR3 Figure 1 A plan view of the back side of the display device 1.

[0149] according to Figure 10 and Figure 11 Some other embodiments of the display device and Figures 1 to 7 The difference between the embodiments is only in the arrangement of the coating 100. Figure 10 and Figure 11 In the middle, you can not repeat Figures 1 to 7 The description of the implementation method is repeated.

[0150] exist Figure 10 and Figure 11 , the first area A1 is shown to have a size similar to that of the main area MA. However, this is only an example, and the first area A1 is an area where the coating 100 is placed in the main area MA, and depends on Figure 1 The purpose and use of the display device 1 can be smaller or larger than the main area MA. Figure 10 and Figure 11 , the first area A1 is shown as a single area, but this is only an example, and the first area A1 is an area where the coating layer 100 is placed in the main area MA, and depends on Figure 1 Depending on the purpose and use of the display device 1 , the first area A1 may be provided in a single or multiple form at any area in the main area MA on the rear surface of the display panel PNL.

[0151] exist Figure 10 and Figure 11 , the second area A2 is shown to have a similar size to the sub-area SBA, but this is only an example, and the second area A2 is an area where the coating 100 is placed in the sub-area SBA, and depends on Figure 1 The purpose and use of the display device 1 can be smaller or larger than the sub-area SBA. Figure 10 and Figure 11 In the embodiment, the second area A2 is shown as a single area, but this is only an example. The second area A2 is an area where the coating 100 is placed in the sub-area SBA, and depends on the Figure 1 Depending on the purpose and usage of the display device 1 , the second area A2 may be provided in a single or multiple form at any position in the sub-area SBA on the rear surface of the display panel PNL.

[0152] The coating layer 100 may include a light-blocking pad portion 101 and a second supporting portion 105 disposed on the light-blocking pad portion 101. The light-blocking pad portion 101 and the second supporting portion 105 may be disposed in a first area A1. The light-blocking pad portion 101 and the second supporting portion 105 may be disposed in a second area A2. The second supporting portion 105 may be arranged to support the display panel PNL. The light-blocking pad portion 101 and the second supporting portion 105 may include different materials.

[0153] In a plane perpendicular to the third direction DR3, the second supporting portion 105 may have a rounded shape at one corner region. The second supporting portion 105 may have a shape in which the thickness of the second supporting portion 105 gradually decreases from one end toward the outside. In a cross section perpendicular to one surface of the display panel PNL, the second supporting portion 105 may have a shape in which the thickness of the second supporting portion 105 in the third direction DR3 gradually decreases as the second supporting portion 105 moves outward in the second direction DR2.

[0154] In some embodiments, the second support portion 105 may include a second material including at least one of silicon, urethane, epoxy acrylate, and polyethylene. For example, the second support portion 105 may be formed by curing ink containing the second material, but is not limited thereto. The second support portion 105 may include the same or substantially the same material as the first support portion 103, but is not limited thereto.

[0155] In the display devices according to some other embodiments described above, the light blocking pad portion 101 and the second supporting portion 105 may be laminated through an inkjet printing process so that the structure of the protection display panel PNL may be manufactured more simply and efficiently.

[0156] Figure 12 According to some other embodiments of the present disclosure Figure 1 A cross-sectional view of the display device taken along line II-II'; and Figure 13 is a plan view of a display device according to some other embodiments of the present disclosure. Figure 13 To illustrate the view from the other side in the third direction DR3 Figure 1 A plan view of the back side of the display device 1.

[0157] according to Figure 12 and Figure 13 Some other embodiments of the display device and Figures 1 to 7 The difference between the embodiments is only in the shape and configuration of the substrate SUB'. Figure 12 and Figure 13 In the middle, you can not repeat Figures 1 to 7 The description of the implementation method is repeated.

[0158] refer to Figure 12 and Figure 13 According to some other embodiments, the substrate SUB' of the display device may be a flexible substrate including a flexible polymer material (eg, polyimide resin). The substrate SUB' may be exposed on one side of the display panel PNL. Accordingly, the display panel PNL may be partially bent, curved, folded, or rolled to adapt to the Figure 1 The display panel PNL can be flexibly formed on various platforms of the display device 1 (for example, a rollable platform, a slidable platform, a foldable platform, etc.).

[0159] The substrate SUB′ may extend in the second direction DR2 , may have a main area MA, a bending area BA, and a sub-area SBA, and may overlap the light blocking pad portion 101 and the first supporting portion 103 .

[0160] In the display devices according to some other embodiments described above, by forming the coating layer 100 for light blocking, impact resistance, and support via an inkjet printing process, the aforementioned problems are prevented or substantially alleviated, material costs are reduced, and the desired characteristics are maintained at each location of the display panel PNL. Furthermore, by forming the coating layer 100 directly on the bottom of the substrate SUB', an additional heat dissipation function can also be provided.

[0161] Figure 14 is a cross-sectional view of a display device according to a modified embodiment.

[0162] Reference together Figure 14 and Figure 12 , the display device according to the modified embodiment is a reference Figure 12 and Figure 13 The display device according to some other embodiments is described, but the touch electrode layer TSP is located in the main area MA. In other words, the display layer DL, the thin film encapsulation layer TFE and the touch electrode layer TSP may not exist or be located in the bending area BA and the sub-area SBA. Figure 14 In the middle, you can not repeat Figures 1 to 7 The description of the implementation method is repeated.

[0163] Figure 15 According to some other embodiments of the present disclosure Figure 1 A cross-sectional view of the display device taken along line II-II'; and Figure 16 is a plan view of a display device according to some other embodiments of the present disclosure. Figure 16 To illustrate the view from the other side in the third direction DR3 Figure 1 A plan view of the back side of the display device 1.

[0164] Figure 15 and Figure 16 According to some other embodiments, the display device Figure 12 and Figure 13 Some other embodiments differ only in the shape and configuration of the coating 100. Figure 15 and Figure 16 In the middle, you can not repeat Figure 12 and Figure 13 The description of the implementation method is repeated.

[0165] refer to Figure 15 and Figure 16The coating layer 100 may include a light-blocking pad portion 101, a first supporting portion 103, and a second supporting portion 105. The light-blocking pad portion 101 may be disposed in the first area A1. The first supporting portion 103 may be disposed in the second area A2. The second supporting portion 105 may be disposed in at least a portion of the first area A1. The second supporting portion 105 may be disposed on the light-blocking pad portion 101. The second supporting portion 105 may be arranged to support the display panel PNL. The light-blocking pad portion 101, the first supporting portion 103, and the second supporting portion 105 may include different materials.

[0166] The light blocking pad portion 101 according to some other embodiments may have a different thickness from the first supporting portion 103. Regarding the thickness in the third direction DR3, the thickness of the light blocking pad portion 101 and the thickness of the first supporting portion 103 may be different. The thickness of the first supporting portion 103 may be greater than the thickness of the light blocking pad portion 101.

[0167] In a plane perpendicular to the third direction DR3, the second supporting portion 105 may have a rounded shape at one corner region. The second supporting portion 105 may have a shape in which the thickness of the second supporting portion 105 gradually decreases from one end toward the outside. In a cross section perpendicular to one surface of the display panel PNL, the second supporting portion 105 may have a shape in which the thickness of the second supporting portion 105 in the third direction DR3 gradually decreases as the second supporting portion 105 moves outward in the second direction DR2.

[0168] In some embodiments, the second support portion 105 may include a second material including at least one of silicon, urethane, epoxy acrylate, and polyethylene. For example, the second support portion 105 may be formed by curing ink containing the second material, but is not limited thereto. The second support portion 105 may include the same or substantially the same material as the first support portion 103, but is not limited thereto.

[0169] In the above-mentioned display device according to some other embodiments, depending on the desired functional characteristics, such as impact resistance, light blocking and support levels, the light blocking pad portion 101, the first supporting portion 103 and the second supporting portion 105 can be formed at the desired position in the desired shape and thickness, and the desired characteristics of each position of the display panel PNL can be effectively ensured.

[0170] Figure 17 According to some other embodiments of the present disclosure Figure 1 A cross-sectional view of the display device taken along line II-II'; and Figure 18 is a plan view of a display device according to some other embodiments of the present disclosure. Figure 18 To illustrate the view from the other side in the third direction DR3 Figure 1A plan view of the back side of the display device 1.

[0171] Figure 17 and Figure 18 According to some other embodiments, the display device Figure 12 and Figure 13 Some other embodiments differ only in the arrangement of the coating 100. Figure 17 and Figure 18 In the middle, you can not repeat Figure 12 and Figure 13 The description of the implementation method is repeated.

[0172] exist Figure 17 and Figure 18 , the first area A1 is shown to have a similar size to the main area MA. However, this is only an example, and the first area A1 is an area where the coating 100 is placed in the main area MA, and depends on Figure 1 The purpose and use of the display device 1 can be smaller or larger than the main area MA. Figure 17 and Figure 18 In the embodiment, the first area A1 is shown as a single area, but this is only an example. The first area A1 is an area where the coating 100 is placed in the main area MA, and depends on the Figure 1 Depending on the purpose and use of the display device 1 , the first area A1 may be provided in a single or multiple form at any position in the main area MA on the rear surface of the display panel PNL.

[0173] exist Figure 17 and Figure 18 , the second area A2 is shown to have a similar size to the sub-area SBA, however, this is only an example, and the second area A2 is an area where the coating 100 is placed in the sub-area SBA, and depends on Figure 1 The purpose and use of the display device 1 can be smaller or larger than the sub-area SBA. Figure 17 and Figure 18 , the second area A2 is shown in a single form, but this is only an example, and the second area A2 is an area where the coating 100 is placed in the sub-area SBA, and depends on Figure 1 Depending on the purpose and usage of the display device 1 , the second area A2 may be provided in a single or multiple form at any position in the sub-area SBA on the rear surface of the display panel PNL.

[0174] The coating 100 may include a light-blocking pad portion 101 and a second supporting portion 105 disposed on the light-blocking pad portion 101. The light-blocking pad portion 101 and the second supporting portion 105 may be disposed in a first area A1. The second supporting portion 105 may be arranged to support the display panel PNL. The light-blocking pad portion 101 and the second supporting portion 105 may be disposed in a second area A2. The light-blocking pad portion 101 and the second supporting portion 105 may include different materials. In a plane perpendicular to the third direction DR3, the second supporting portion 105 may have a rounded shape at one corner. The second supporting portion 105 may have a shape in which the thickness of the second supporting portion 105 gradually decreases from one end toward the outside. In a cross-section perpendicular to one side of the display panel PNL, the second supporting portion 105 may have a shape in which the thickness of the second supporting portion 105 in the third direction DR3 gradually decreases as the second supporting portion 105 moves outward in the second direction DR2.

[0175] In some embodiments, the second support portion 105 may include a second material including at least one of silicon, urethane, epoxy acrylate, and polyethylene. For example, the second support portion 105 may be formed by curing ink containing the second material, but is not limited thereto. The second support portion 105 may include the same or substantially the same material as the first support portion 103, but is not limited thereto.

[0176] In the display devices according to some other embodiments described above, the light blocking pad portion 101 and the second supporting portion 105 may be laminated through an inkjet printing process so that the structure of the protection display panel PNL may be manufactured more simply and efficiently.

[0177] Hereinafter, a method of manufacturing a display device according to some embodiments will be described.

[0178] Figure 19 A flowchart illustrating a method of manufacturing a display device according to some embodiments of the present disclosure; Figure 20 To illustrate some embodiments of the present disclosure Figure 19 A cross-sectional view of process S130; and Figure 21 To illustrate some embodiments of the present disclosure Figure 19 FIG. 5 is a cross-sectional view of process S140 .

[0179] refer to Figure 19 In a method of manufacturing a display device according to some embodiments, a substrate SUB′ having different first and second areas A1 and A2 on one surface is provided (see, Figure 12 )(S110).

[0180] In addition, on the substrate SUB' (see, Figure 12 ) is formed on the other side of the display layer DL (see, Figure 12 ), and a thin film encapsulation layer TFE is formed on the display layer DL (see, Figure 12 )(S120).

[0181] Then, the substrate SUB' (see, Figure 12 ) is formed in the first area A1 of the substrate SUB' and the first support portion 103 is formed in the second area A2 of the substrate SUB' by an inkjet printing process to form a coating layer 100 (see, Figure 12 )(S130). In other words, the coating layer 100 including the light blocking pad portion 101 and the first supporting portion 103 may be formed on one surface of the substrate SUB′ through an inkjet printing process.

[0182] The coating layer 100 may be formed by applying ink to the display panel PNL through an inkjet head and curing the ink (see, Figure 12 ). However, it is not limited thereto, and the coating layer 100 may be formed by a coating process (eg, screen printing) or using a dispenser. The coating layer 100 may be cured by at least one of ultraviolet curing, thermal curing, and natural curing.

[0183] As mentioned above Figure 8 , the light blocking pad portion 101 may be formed to have a different thickness from the first supporting portion 103. In addition, the light blocking pad portion 101 and the first supporting portion 103 may be formed of different materials.

[0184] For example, reference Figure 20 The light-blocking pad portion 101 is configured so that the first inkjet head HD1 applies a first ink I1 containing a first material to the first area A1, and the applied first ink I1 can be cured to form the light-blocking pad portion 101. In order for the light-blocking pad portion 101 to perform both light-blocking and impact-resistant functions, the first material can be a mixture of an elastic material and a light-blocking material, the elastic material including at least one of silicon, urethane, epoxy acrylate, and polyethylene, and the light-blocking material including at least one of graphene oxide (GO), reduced graphene oxide (RGO), aluminum, carbon black (CB), and copper (Cu).

[0185] In addition, reference Figure 20 , a second ink I2 including a second material may be applied to the second area A2 by a second inkjet head HD2 and the applied second ink I2 may be cured to form the first support portion 103. In order for the first support portion 103 to perform supporting and protective functions, the second material may include at least one of silicon, urethane, epoxy acrylate, and polyethylene. The second material may be a high modulus material. The second material may be a low viscosity material of 30 cPs or less. The first support portion 103 may protect Figure 1The display device 1 is protected from external foreign matter and prevents the occurrence of scratches.

[0186] In addition, the second supporting portion 105 is formed on the light blocking pad portion 101 (S140). However, this is optional, and the coating layer 100 may include only the light blocking pad portion 101 and the first supporting portion 103 on one surface of the substrate SUB'.

[0187] For example, reference Figure 21 , configure the second support portion 105 so that the second inkjet head HD2 applies the second ink I2 containing the second material to the light blocking pad portion 101, and the second support portion 105 can be formed by curing the applied second ink I2. However, it is not limited to this, and the second support portion 105 may include a different material from the first support portion 103. In order that the second support portion 105 can perform supporting and protective functions, the second material may include at least one of silicon, urethane, epoxy acrylate, and polyethylene. The second material may be a high modulus material. The second material may be a low viscosity material of 30 cPs or less. The second support portion 105 may protect Figure 1 The display device 1 is protected from external foreign matter and the occurrence of scratches is prevented or substantially reduced.

[0188] The multi-layer structure of the coating 100 may be implemented using methods such as arranging inkjet heads, changing nozzle sizes, or reciprocating coating.

[0189] In the method for manufacturing a display device according to the above embodiment, by coating and forming the layer having light-blocking and impact-resistant functions and the layer having a supporting function (i.e., the coating layer 100) through an inkjet printing process, material costs can be reduced and tolerances can be reduced, so the desired characteristics of each position of the display panel PNL can be ensured. In addition, the thickness, size, shape, etc. of the layer having light-blocking and impact-resistant functions and the layer having a supporting function can be easily controlled.

[0190] Hereinafter, a method of manufacturing a display device according to some other embodiments will be described.

[0191] Figure 22 is a flowchart illustrating a method of manufacturing a display device according to some other embodiments of the present disclosure; and Figure 23 and Figure 24 To illustrate some other embodiments of the present disclosure Figure 22 A cross-sectional view of process S230 is shown.

[0192] refer to Figure 22 In a method of manufacturing a display device according to some other embodiments, a substrate SUB′ having different first and second areas A1 and A2 on one surface is provided (see, Figure 12 )(S210).

[0193] In addition, on the substrate SUB' (see, Figure 12 ) forms a display layer DL (see, Figure 12 ), and a thin film encapsulation layer TFE is formed on the display layer DL (see, Figure 12 )(S220).

[0194] Then, the substrate SUB' (see, Figure 12 ) forms a light-blocking pad portion 101 in the first and second regions A1 and A2, and forms a second supporting portion 105 on the light-blocking pad portion 101 by an inkjet printing process to form a coating layer 100 (see, Figure 12 )(S230). In other words, the coating layer 100 including the light blocking pad portion 101 and the second supporting portion 105 may be formed on one surface of the substrate SUB′ through an inkjet printing process.

[0195] The coating layer 100 may be formed by applying ink to the display panel PNL through an inkjet head and curing the ink (see, Figure 12 ). However, it is not limited thereto, and the coating layer 100 may be formed by a coating process such as screen printing or using a dispenser. The coating layer 100 may be cured by at least one of ultraviolet curing, thermal curing, and natural curing.

[0196] The light blocking pad portion 101 may be formed to have a different thickness from the second supporting portion 105. In addition, the light blocking pad portion 101 and the second supporting portion 105 may be formed of different materials.

[0197] For example, reference Figure 23 , a first ink I1 including a first material can be applied to the first area A1 and the second area A2 by a first inkjet head HD1, and the applied first ink I1 can be cured to form the light-blocking pad portion 101. In order for the light-blocking pad portion 101 to perform both light-blocking and impact-resistant functions, the first material can be a mixture of an elastic material and a light-blocking material, the elastic material including at least one of silicon, urethane, epoxy acrylate, and polyethylene, and the light-blocking material including at least one of graphene oxide (GO), reduced graphene oxide (RGO), aluminum, carbon black (CB), and copper (Cu).

[0198] In addition, the second supporting portion 105 is formed on the light blocking pad portion 101. For example, referring to Figure 24, the second supporting portion 105 is configured so that a second ink I2 containing a second material is applied to the light-blocking pad portion 101 by a second inkjet head HD2, and the second supporting portion 105 can be formed by curing the applied second ink I2. However, it is not limited thereto, and the second supporting portion 105 may include a different material from the light-blocking pad portion 101. In order that the second supporting portion 105 can perform supporting and protective functions, the second material may include at least one of silicon, urethane, epoxy acrylate, and polyethylene. The second material may be a high modulus material. The second material may be a low viscosity material of 30 cPs or less. The second supporting portion 105 may protect Figure 1 The display device 1 is protected from external foreign matter and prevents the occurrence of scratches.

[0199] The coating 100 may be applied using methods such as arranging inkjet heads, changing nozzle size, or reciprocating coating (see, Figure 12 ) multi-layer structure.

[0200] According to the method for manufacturing a display device according to some other embodiments described above, the layer having light-blocking and impact-resistant functions and the layer having a supporting function are applied and formed using an inkjet printing process, thereby reducing material costs and narrowing tolerances, thereby ensuring the required characteristics of each position of the display panel. In addition, the thickness, size, and shape of the layer having light-blocking and impact-resistant functions and the layer having a supporting function can be easily controlled, and the light-blocking pad portion 101 and the second supporting portion 105 can be stacked and formed using an inkjet printing process, making it possible to more simply and efficiently manufacture the structure of the protective display panel PNL.

[0201] It should be understood that the embodiments described herein should be considered in a descriptive sense and not for purposes of limitation. The description of features or aspects in each embodiment should generally be considered to be applicable to other similar features or aspects in other embodiments. Although one or more embodiments have been described with reference to the drawings, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope defined by the claims and their equivalents.

Claims

1. A display device comprising: a display panel having different first and second areas on one surface; and A coating layer is provided on the one surface of the display panel, the coating layer including a light blocking pad portion in the first region and a first supporting portion in the second region located at one side of the first region to support the display panel. 2 . The display device according to claim 1 , wherein the light blocking pad portion and the first supporting portion have different thicknesses. 3 . The display device according to claim 1 , wherein the coating layer further comprises a second supporting portion on the light-blocking pad portion. 4 . The display device according to claim 1 , wherein the coating layer has a shape in which a thickness of the coating layer gradually decreases from one end toward the outside. 5 . The display device according to claim 1 , wherein the coating layer has a rounded shape at one corner region in a plane parallel to the one surface of the display panel.

6. The display device according to claim 1, wherein the light-blocking pad portion comprises a first material mixed with an elastic material and a light-blocking material, the elastic material comprises at least one of silicon, urethane, epoxy acrylate, and polyethylene, and the light-blocking material comprises at least one of graphene oxide, reduced graphene oxide, aluminum, carbon black, and copper. 7 . The display device of claim 1 , wherein the first supporting portion comprises a second material comprising at least one of silicon, urethane, epoxy acrylate, and polyethylene. 8 . The display device according to claim 1 , wherein the display panel comprises a bending region adjacent to the first region on the one surface. 9 . The display device according to claim 8 , wherein the display panel comprises a substrate exposed on the one surface and comprising glass.

10. A display device comprising: Display panel; and A coating layer is provided on one side of the display panel, the coating layer including a light blocking pad portion on the one side of the display panel and a supporting portion on the light blocking pad portion to support the display panel.

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