Electronic device

Abstract

The utility model relates to an electronic device. The electronic device includes a lower coating layer including a resin matrix and a plurality of carbon fillers dispersed in the resin matrix, and a display panel disposed on the lower coating layer. The plurality of carbon fillers includes a plurality of first sub-carbon fillers disposed in a first alignment direction and a plurality of second sub-carbon fillers disposed in a second alignment direction crossing the first alignment direction. A lower surface of the lower coating layer includes a protruding portion protruding in a direction away from the display panel, and the lower surface of the lower coating layer is spaced apart from the display panel, and an upper surface of the lower coating layer is interposed between the lower surface of the lower coating layer and the display panel.

Description

[0001] Cross-reference to related applications

[0002] This application claims priority to and all benefits derived therefrom of Korean Patent Application No. 10-2024-0047068, filed on April 8, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to a display device including carbon filler and a method for manufacturing the display device. Background Technology

[0004] Various display devices, such as televisions, mobile phones, tablet computers, and game consoles, are under development. These display devices may include various components such as display panels and input sensing layers, and may include multiple functional layers (e.g., heat dissipation layers and shielding layers) to maintain reliability. Multiple functional layers increase the thickness of the display device, and research is underway to improve this thickness. Utility Model Content

[0005] This disclosure provides a display device with reduced thickness and exhibiting excellent reliability.

[0006] This disclosure also provides a method for manufacturing a display device, the method having excellent manufacturing efficiency.

[0007] Embodiments of this disclosure provide an electronic device comprising: a lower coating layer including a resin matrix and a plurality of carbon fillers dispersed in the resin matrix; and a display panel disposed on the lower coating layer. The plurality of carbon fillers includes a plurality of first sub-carbon fillers disposed in a first arrangement direction and a plurality of second sub-carbon fillers disposed in a second arrangement direction intersecting the first arrangement direction; and the lower surface of the lower coating layer includes a protruding portion protruding in a direction away from the display panel and spaced apart from the display panel, with the upper surface of the lower coating layer located between the lower surface of the lower coating layer and the display panel.

[0008] In an embodiment, each of the plurality of carbon fillers may be a carbon fiber.

[0009] In an embodiment, the lower coating may further include: a first coating comprising the resin matrix and the plurality of first sub-carbon fillers dispersed in the resin matrix; and a second coating comprising the resin matrix and the plurality of second sub-carbon fillers dispersed in the resin matrix, wherein the second coating is disposed between the first coating and the display panel.

[0010] In one embodiment, the lower surface of the lower coating may be the lower surface of the first coating.

[0011] In an embodiment, the lower surface of the lower coating may further include a flat portion adjacent to the protruding portion, and the plurality of first sub-carbon fillers may be disposed in the protruding portion or may not be disposed in the flat portion.

[0012] In an embodiment, the plurality of carbon fillers may further include: a plurality of third sub-carbon fillers disposed in the first arrangement direction; and a plurality of fourth sub-carbon fillers disposed in the second arrangement direction, and the lower coating may further include: a third coating comprising the resin matrix and the plurality of third sub-carbon fillers dispersed in the resin matrix, and the third coating being disposed between the second coating and the display panel; and a fourth coating comprising the resin matrix and the plurality of fourth sub-carbon fillers dispersed in the resin matrix, and the fourth coating being disposed between the third coating and the display panel.

[0013] In an embodiment, each of the plurality of carbon fillers may have a rod shape, and the length of the long side of the rod shape may be from about 10 micrometers (μm) to about 200 μm.

[0014] In this embodiment, the resin matrix may be a photocurable resin matrix.

[0015] In the embodiments, the resin matrix may include at least one of epoxy resin, acrylic resin, urethane resin and siloxane resin.

[0016] In an embodiment, the weight of the plurality of carbon fillers may be from approximately 50 wt% to approximately 90 wt%, based on the total weight (100 wt%) of the undercoat.

[0017] In one embodiment, the upper surface of the lower coating may be flat.

[0018] In embodiments of this disclosure, a method for manufacturing a display device includes: preparing a display panel; and providing a lower coating layer comprising a resin matrix and a plurality of carbon fillers dispersed in the resin matrix on the surface of the display panel. The plurality of carbon fillers includes a plurality of first sub-carbon fillers disposed in a first arrangement direction and a plurality of second sub-carbon fillers disposed in a second arrangement direction intersecting the first arrangement direction. Providing the lower coating layer includes: providing a second coating composition to form a preliminary second coating layer, the second coating composition comprising a preliminary resin matrix and a plurality of preliminary second sub-carbon fillers dispersed in the preliminary resin matrix in the first direction; curing the preliminary second coating layer to form a second coating layer, the second coating layer comprising the resin matrix and the plurality of second sub-carbon fillers dispersed in the resin matrix; providing a first coating composition on the surface of the second coating layer to form a preliminary first coating layer, the first coating composition comprising the preliminary resin matrix and a plurality of preliminary first sub-carbon fillers dispersed in the preliminary resin matrix in the second direction intersecting the first direction; and curing the preliminary first coating layer to form a first coating layer, the first coating layer comprising a resin matrix and a plurality of first sub-carbon fillers dispersed in the resin matrix.

[0019] In an embodiment, the plurality of carbon fillers may further include a plurality of third sub-carbon fillers disposed in the first arrangement direction and a plurality of fourth sub-carbon fillers disposed in the second arrangement direction, and the formation of the lower coating may further include: before forming the preliminary second coating, providing a fourth coating composition along the second direction on the surface of the display panel to form a preliminary fourth coating, the fourth coating composition including the preliminary resin matrix and a plurality of preliminary fourth sub-carbon fillers dispersed in the preliminary resin matrix; curing the preliminary fourth coating to form a fourth coating, the fourth coating including the resin matrix and the plurality of fourth sub-carbon fillers dispersed in the resin matrix; providing a third coating composition along the first direction on the surface of the fourth coating to form a preliminary third coating, the third coating composition including the preliminary resin matrix and a plurality of preliminary third sub-carbon fillers dispersed in the preliminary resin matrix; and curing the preliminary third coating to form a third coating, the third coating including the resin matrix and the plurality of third sub-carbon fillers dispersed in the resin matrix.

[0020] In an embodiment, the first coating composition and the second coating composition may be provided by a dispensing method.

[0021] In an embodiment, each of the plurality of carbon fillers may be a carbon fiber.

[0022] In an embodiment, each of the plurality of carbon fillers may have a rod shape, and the length of the long side of the rod shape may be from about 10 μm to about 200 μm.

[0023] In an embodiment, the thickness of each of the preliminary first coating and the preliminary second coating may be from about 5 μm to about 30 μm.

[0024] In an embodiment, the weight of the plurality of preliminary first carbon fillers may be from about 50 wt% to about 90 wt% based on the total weight of the first coating composition, and the weight of the plurality of preliminary second carbon fillers may be from about 50 wt% to about 90 wt% based on the total weight of the second coating composition.

[0025] In an embodiment, ultraviolet light may be provided during the curing of the preliminary first coating and the curing of the preliminary second coating.

[0026] In an embodiment, the preliminary resin matrix may include at least one of epoxy resin, acrylic resin, urethane resin, and silicone resin. Attached Figure Description

[0027] The accompanying drawings are included to provide a further understanding of this disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the present disclosure and, together with the description, serve to illustrate the principles of the disclosure. In the drawings:

[0028] Figure 1 This is a perspective view illustrating an embodiment of a display device according to the present disclosure;

[0029] Figure 2 This is an exploded perspective view illustrating an embodiment of a display device according to the present disclosure;

[0030] Figure 3A It is shown that... Figure 2 A cross-sectional view of the portion corresponding to line I-I';

[0031] Figure 3B This is a cross-sectional view illustrating another embodiment of a display device according to this disclosure;

[0032] Figure 4 This is a cross-sectional view showing an embodiment of a display device according to a portion of the present disclosure;

[0033] Figure 5 This is an exploded perspective view showing an embodiment of a display device according to a portion of the present disclosure;

[0034] Figure 6 This is a cross-sectional view showing an embodiment of a display device according to a portion of the present disclosure;

[0035] Figure 7 This is a cross-sectional view showing an embodiment of a display device according to a portion of the present disclosure;

[0036] Figure 8 It is shown that... Figure 2 A plan view of the part corresponding to region AA';

[0037] Figure 9 This is an exploded perspective view showing an embodiment of a display device according to a portion of the present disclosure;

[0038] Figure 10 This is a cross-sectional view showing an embodiment of a display device according to a portion of the present disclosure;

[0039] Figure 11 This is a cross-sectional view showing an embodiment of a display device according to a portion of the present disclosure;

[0040] Figure 12A This is a flowchart illustrating an embodiment of a method for manufacturing a display device according to the present disclosure;

[0041] Figure 12B This is a flowchart illustrating an embodiment of a method for manufacturing a display device according to the present disclosure;

[0042] Figure 13 An embodiment of the steps for manufacturing a display device according to the present disclosure is illustrated schematically;

[0043] Figure 14 An embodiment of the steps for manufacturing a display device according to the present disclosure is illustrated schematically;

[0044] Figure 15 An embodiment of the steps for manufacturing a display device according to the present disclosure is illustrated schematically;

[0045] Figure 16 An embodiment of the steps for manufacturing a display device according to the present disclosure is illustrated schematically;

[0046] Figure 17 An embodiment of the steps for manufacturing a display device according to the present disclosure is illustrated schematically;

[0047] Figure 18A An embodiment of the steps for manufacturing a display device according to the present disclosure is illustrated schematically; and

[0048] Figure 18B An embodiment of the steps for manufacturing a display device according to the present disclosure is illustrated schematically. Detailed Implementation

[0049] Various modifications and forms may be made in this disclosure, and illustrative embodiments will be shown in the accompanying drawings and described in detail in the text. However, this is not intended to limit this disclosure to the specific forms disclosed, and it will be understood that all changes, equivalents, or substitutions falling within the spirit and technical scope of this disclosure should be included.

[0050] In this specification, it will be understood that when an element (or region, layer, portion, etc.) is referred to as being "on" another element, "connected to" or "coupled to" another element, it may be directly on, directly connected to or directly coupled to the other element, or there may be an intermediary element.

[0051] The same reference numerals always refer to the same elements. Additionally, in the accompanying drawings, the thickness, scale, and dimensions of elements are exaggerated for the purpose of effectively describing the technical content. As used herein, the term "and / or" includes any and all combinations that the relevant configuration can define.

[0052] It will be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, a first element may be referred to as a second element without departing from the scope of this disclosure. Similarly, a second element may also be referred to as a first element. Unless otherwise stated, singular terms include plural forms.

[0053] Furthermore, for ease of description, the terms used herein (such as "below," "under," "above," and "above") describe the relationship between one element and another as shown in the accompanying drawings. These terms are relative concepts and are described based on the directions indicated in the accompanying drawings.

[0054] It will be understood that when the terms “comprising” and / or “having” are used in this specification, they specify the presence of the stated features, integrals, steps, operations, elements, components and / or groups thereof, but do not preclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or groups thereof.

[0055] Given the measurements discussed and the errors associated with the measurement of a particular quantity (i.e., the limitations of the measurement system), the terms “approximately” or “almost (approximately)” as used herein include stated values ​​and mean within an acceptable deviation of a particular value as determined by one of ordinary skill in the art. For example, the term “approximately” may mean within one or more standard deviations, or within ±30%, ±20%, ±10%, or ±5% of the stated value.

[0056] Unless otherwise defined, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. It will also be understood that, unless expressly defined herein, terms (such as those defined in common dictionaries) shall be interpreted as having the meaning consistent with their meaning in the context of the relevant field and shall not be interpreted in an idealized or overly formal sense.

[0057] In the following description, a display device in an embodiment of the present disclosure will be described with reference to the accompanying drawings. Figure 1 This is a perspective view illustrating an embodiment of a display device according to the present disclosure. Figure 2 This is an exploded perspective view showing an embodiment of a display device according to the present disclosure.

[0058] Figure 1 The display device DD in the embodiments of this disclosure shown can be activated according to an electrical signal. In the embodiments, the display device DD may be, for example, a personal computer, laptop computer, personal digital terminal, game console, portable electronic device, television, monitor, external billboard, car navigation system, or wearable device, but the embodiments of this disclosure are not limited thereto. Figure 1 In this specification, the display device DD is shown as a mobile phone. The electronic device may be the display device DD or may include the display device DD.

[0059] In embodiments of this disclosure, the display device DD can display an image IM via a display area DA. The display area DA may include a plane defined by a first direction axis DR1 and a second direction axis DR2. The display area DA may include a curved surface that curves from at least one side of the plane defined by the first direction axis DR1 and the second direction axis DR2. Figure 1 The display device DD shown in the embodiments of the present disclosure is illustrated as including two curved surfaces that bend from opposite sides of a plane defined by a first direction axis DR1 and a second direction axis DR2. However, the shape of the display area DA is not limited to this. For example, in embodiments, the display area DA may include only a flat surface defined by the first direction axis DR1 and the second direction axis DR2, or the display area DA may also include at least two curved surfaces (e.g., four curved surfaces) that bend from at least two sides (e.g., four sides) of the plane defined by the first direction axis DR1 and the second direction axis DR2, respectively.

[0060] The display device DD in the embodiments of this disclosure may be flexible. "Flexible" refers to bendability, and the display device DD may include all structures from fully foldable structures to structures that can be bent to the nanometer level. In embodiments, the display device DD may be a foldable display device. Alternatively, for example, the display device DD may be rigid.

[0061] The non-display area NDA may be adjacent to the display area DA. In this disclosure, the term "adjacent" may mean "closely adjacent" (e.g., "tightly adjacent"), but is not limited thereto. The non-display area NDA may surround the display area DA. Therefore, the shape of the display area DA may be substantially defined by the non-display area NDA. However, this is illustrated by way of example, and the non-display area NDA may be adjacent only to one side of the display area DA or may be omitted. The display area DA may be provided in various shapes and is not limited to a particular embodiment.

[0062] Figure 1 The following figures illustrate the first direction axis DR1 to the third direction axis DR3. The directions indicated by the first direction axis DR1, the second direction axis DR2, and the third direction axis DR3 described in this specification are relative concepts and can be converted to other directions. Furthermore, the directions indicated by the first direction axis DR1, the second direction axis DR2, and the third direction axis DR3 can be described as the first direction DR1 to the third direction DR3, and the same reference numerals can be used for them. In this specification, the first direction axis DR1 and the second direction axis DR2 can be orthogonal to each other, and the third direction axis DR3 can be the normal direction relative to the plane defined by the first direction axis DR1 and the second direction axis DR2.

[0063] The thickness direction of the display device DD can be parallel to a third directional axis DR3, which is the normal direction relative to the plane defined by the first directional axis DR1 and the second directional axis DR2. In this specification, the upper surface (or front surface, upper part surface, upper side) and lower surface (or rear surface, lower part surface, lower side) of the components constituting the display device DD can be defined based on the third directional axis DR3. Furthermore, in this specification, the direction in which the third directional axis DR3 extends is parallel to the thickness direction; the upper surface (or front surface, upper part surface, upper side) means a surface adjacent to (or in a direction closer to) the surface in which the image IM is displayed; and the lower surface (or rear surface, lower part surface, lower side) means a surface spaced apart from (or in a direction away from) the surface in which the image IM is displayed. In this specification, a plane refers to a plane parallel to the plane defined by the first directional axis DR1 and the second directional axis DR2, and a section refers to a plane perpendicular to the plane defined by the first directional axis DR1 and the second directional axis DR2 and parallel to the third directional axis (also called the thickness direction) DR3.

[0064] refer to Figure 2The display device DD may include a lower coating layer LC, a display module DM disposed on the lower coating layer LC, and a window WP disposed on the display module DM. Additionally, the display device DD may also include a housing HAU, in which the display module DM and an optical layer RPL disposed between the display module DM and the window WP are housed.

[0065] exist Figure 1 and Figure 2 In the display device DD shown, the window WP and the housing HAU can be combined with each other to configure the appearance of the display device DD. The housing HAU can be disposed below the display module DM. The housing HAU can include a material with relatively high rigidity. In embodiments, the housing HAU can include multiple frames and / or multiple plates, for example, made of glass, plastic, or metal. The housing HAU can provide a predetermined receiving space. The display module DM can be housed in the receiving space to be protected from external impacts.

[0066] The display module DM can be activated according to an electrical signal. The display module DM is activated so that it can be displayed in the display area DA (reference) of the display device DD. Figure 1 Image IM (reference) is displayed in ) Figure 1 An active region AA-DM and a peripheral region NAA-DM can be defined within the display module DM. The active region AA-DM can be activated based on an electrical signal. Pixels PX can be disposed within the active region AA-DM. The peripheral region NAA-DM can be adjacent to at least one side of the active region AA-DM. Circuits or lines for driving the active region AA-DM can be disposed within the peripheral region NAA-DM.

[0067] The window WP may include a transmissive region TA and a border region BZA. The transmissive region TA may overlap with at least a portion of the active region AA-DM of the display module DM. The transmissive region TA may be an optically transparent region. An image IM (referencing) can be provided to the user through the transmissive region TA. Figure 1 ).

[0068] The border region BZA can have a relatively lower transmittance than the transmission region TA. The border region BZA can define the shape of the transmission region TA. The border region BZA can be adjacent to and surround the transmission region TA.

[0069] The border region BZA may have a predetermined color. The border region BZA may cover the peripheral region NAA-DM of the display module DM to prevent the peripheral region NAA-DM from being observed from the outside. However, embodiments of this disclosure are not limited to those shown, and the border region BZA may be adjacent only to one side of the transmissive region TA or may be at least partially omitted.

[0070] The optical layer RPL can be a reflection-preventing layer that reduces the reflectivity of external light incident from outside the display module DM. The optical layer RPL can be formed on the display module DM using a continuous process. The optical layer RPL may include a polarizer or a color filter layer. In embodiments, the optical layer RPL may include at least one of, for example, a phase retarder, a polarizer, a polarizing film, and a polarizing filter. Alternatively, the optical layer RPL may include a plurality of color filters arranged in a predetermined arrangement. In embodiments, for example, a display panel DP (referencing...) described later can be considered... Figure 4 The color filter is arranged according to the emission color of the pixels included in the diagram. Additionally, the optical layer RPL may include a black matrix adjacent to the color filter. Unlike the illustration, the optical layer RPL can be omitted.

[0071] The lower coating LC may include the resin matrix BR, which will be described later (reference). Figures 6 to 8 ) and dispersed in the resin matrix BR (reference) Figures 6 to 8 Multiple carbon fillers CB (reference) in ) Figure 8 The lower coating LC can be a functional layer performing multiple functions, and in the display device DD of the embodiments of this disclosure, apart from the housing HAU, no separate components may be disposed below the lower coating LC. This includes carbon filler CB (see reference). Figure 8 The undercoat layer LC can be a functional layer that performs multiple functions such as heat dissipation, light blocking, shielding, and vibration damping. In the embodiments of this disclosure, the display device DD including the undercoat layer LC does not include separate heat dissipation layers, separate light blocking layers, separate shielding layers, and separate vibration damping layers below the display module DM. Therefore, the display device DD including the undercoat layer LC in the embodiments of this disclosure can be implemented with a thin thickness. The display device DD including the undercoat layer LC in the embodiments of this disclosure can reduce manufacturing costs and improve manufacturing efficiency.

[0072] Figure 3A It is shown that... Figure 2 A cross-sectional view of the portion corresponding to line I-I'. Figure 3A For ease of description, the housing HAU is omitted, and the display module DM and the undercoat LC are shown.

[0073] refer to Figure 3A The display module DM may include a display panel DP and an input sensing layer ISP disposed on the display panel DP. The display panel DP may be essentially an image generating IM (refer to...). Figure 1 ) components.

[0074] The display panel DP can be disposed on the undercoat LC. The undercoat LC may include an upper surface LC_UF and a lower surface LC_DF facing away from the upper surface LC_UF. The upper surface LC_UF of the undercoat LC may be adjacent to the display panel DP, and the lower surface LC_DF of the undercoat LC may be spaced apart from the display panel DP, with the upper surface LC_UF located between the lower surface LC_DF and the display panel DP. The upper surface LC_UF of the undercoat LC may have a flat surface.

[0075] The lower surface LC_DF of the undercoat LC may include a protruding portion CPO that projects in a direction away from the display panel DP. Additionally, the lower surface LC_DF of the undercoat LC may also include a flat portion PPO adjacent to the protruding portion CPO. Carbon filler CB (reference) Figure 8 It can be placed in the protruding portion CPO. Carbon filler CB (reference) Figure 8 The protruding portion CPO may not be present in the flat portion PPO. The protruding portion CPO and the flat portion PPO may have an integral shape. Multiple protruding portions CPO may be provided, and flat portions PPO may be provided between the multiple protruding portions CPO. In the method of manufacturing a display device in the embodiments of this disclosure described later, the lower coating LC may be formed by a dotting method using multiple nozzles and includes the protruding portions CPO. The thickness of the lower coating LC including the protruding portions CPO may be non-uniform.

[0076] The display panel (DP) may include a substrate layer (BS), a circuit layer (DP-CL), a display element layer (DP-ED), and a package layer (TFE) stacked sequentially. Unlike the diagram, individual components may be disposed between two adjacent layers of the substrate layer (BS), circuit layer (DP-CL), display element layer (DP-ED), and package layer (TFE).

[0077] The substrate layer BS can provide a substrate surface on which the circuit layer DP-CL is disposed. The substrate layer BS can be a flexible substrate that can be bent, folded, or rolled. The substrate layer BS can be a glass substrate, a metal substrate, or a polymer substrate. However, the embodiments of this disclosure are not limited thereto, and the substrate layer BS can be an inorganic layer, an organic layer, or a composite material layer.

[0078] The matrix layer BS may comprise a single layer or multiple layers. In embodiments, the matrix layer BS may comprise, for example, a first synthetic resin layer, a single layer or multiple layers of inorganic layers, and a second synthetic resin layer disposed on the single layer or multiple layers of inorganic layers. Each of the first and second synthetic resin layers may comprise a polyimide resin. Additionally, each of the first and second synthetic resin layers may comprise at least one of acrylate resins, methacrylate resins, polyisoprene resins, vinyl resins, epoxy resins, urethane resins, cellulose resins, siloxane resins, polyamide resins, and perylene resins. In this specification, "~~" type resin refers to resins containing the functional group "~~".

[0079] The circuit layer DP-CL can be disposed on the substrate layer BS. The circuit layer DP-CL may include an insulating layer, semiconductor patterns, and conductive patterns such as signal lines. The display element layer DP-ED can be disposed on the circuit layer DP-CL. The display element layer DP-ED may include light-emitting elements ED (see reference ED), which will be described later. Figure 4 In an embodiment, the light-emitting element ED (reference) Figure 4 This can include, for example, organic light-emitting materials, inorganic light-emitting materials, organic-inorganic light-emitting materials, quantum dots, quantum rods, micro light-emitting diodes (LEDs), or nano LEDs.

[0080] A TFE (Transmission Equipment) encapsulation layer can be disposed on the Display Element Layer (DP-ED). The TFE protects the DP-ED from moisture, oxygen, and foreign matter such as dust particles. The TFE may include at least one inorganic layer. In embodiments, the TFE may include, for example, inorganic, organic, and inorganic layers stacked sequentially.

[0081] The input sensing layer (ISP) can be disposed on the display panel (DP). Alternatively, the input sensing layer (ISP) can be disposed directly on the encapsulation layer (TFE). Or, an adhesive component can be disposed between the input sensing layer (ISP) and the display panel (DP).

[0082] In this specification, the statement "one component is directly set on / provided on another component" means that no third component is placed between them. That is, the statement "one component is directly set on / provided on another component" means that one component contacts another component.

[0083] The input sensing layer (ISP) can sense external input, convert it into a predetermined input signal, and provide the input signal to the display panel (DP). In an embodiment, the input sensing layer (ISP) can be, for example, a touch sensing layer that senses touch. The input sensing layer (ISP) can sense direct touch from a user, indirect touch from a user, direct touch from an object, or indirect touch from an object.

[0084] The input sensing layer (ISP) can sense at least one of the location and intensity (pressure) of a touch applied from the outside. The input sensing layer (ISP) can have various structures or be composed of various materials, and is not limited to a specific embodiment. In an embodiment, the input sensing layer (ISP) can sense external input using, for example, a capacitive method. The display panel (DP) can receive the input signal from the input sensing layer (ISP) and generate an image (IM) corresponding to the input signal (see reference). Figure 1 In an embodiment, the optical layer RPL can be formed on the input sensing layer ISP, for example, via a continuous process.

[0085] The display module DM may further include a panel protective layer PF disposed between the display panel DP and the undercoat LC. The panel protective layer PF protects the lower part of the display panel DP. The panel protective layer PF may include a flexible plastic material. In an embodiment, the panel protective layer PF may include, for example, polyethylene terephthalate. Unlike what is shown, the panel protective layer PF may be omitted. When the panel protective layer PF is omitted, the display module DM may be directly disposed on the undercoat LC.

[0086] Figure 3B This is a cross-sectional view illustrating another embodiment of a display device according to a portion of the present disclosure. Figure 3B and Figure 3A Compared to the LC-X which differs only in the shape of the lower coating, and compared to the reference... Figure 3A The same reference numerals used in the accompanying drawings can be applied in the same way. Figure 3B The accompanying reference numerals. Specifically, with Figure 3A Compared to the lower coating LC, Figure 3B The lower coating LC-X includes the protruding portion CPO but does not include the flat portion PPO (reference). Figure 3A ).

[0087] refer to Figure 3B The lower surface LC_DFX of the undercoat LC-X may include a protruding portion CPO and may not include a flat portion PPO. The thickness of the undercoat LC-X including the protruding portion CPO may be non-uniform. Figure 3BThe lower coating LC-X can be formed by a plurality of nozzles not arranged parallel to each other in one direction, and may not include the flat portion PPO. Compared to a plurality of nozzles arranged parallel to each other in one direction (e.g., on a first direction axis (also called the first direction) DR1), a plurality of nozzles not arranged parallel to each other in one direction can be arranged relatively close to each other. A plurality of nozzles not arranged parallel to each other in one direction can be configured to form a diagonal line and can be arranged with a relatively narrow interval. Therefore, the lower coating LC-X formed by a plurality of nozzles not arranged parallel to each other in one direction may not include the flat portion PPO. This will be described in detail later when describing the method of manufacturing a display device in embodiments of the present disclosure.

[0088] Figure 4 This is a cross-sectional view illustrating an embodiment of a display device according to a portion of the present disclosure. Figure 4 It can be shown in detail Figure 3A and Figure 3B The diagram shows a cross-sectional view of the configuration of the display module DM. However, in Figure 4 The configuration of the display module DM is exemplary, and the embodiments of this disclosure are not limited thereto.

[0089] The display panel DP can include pixels PX (reference) Figure 2 Pixel PX (reference) Figure 2 This may include a transistor (TR) and a light-emitting element (ED). The transistor (TR) and the light-emitting element (ED) may be disposed above the substrate layer (BS). Figure 4 The image shows a transistor TR, but essentially, it's a pixel PX (reference). Figure 2 It may include multiple transistors for driving the light-emitting element ED and at least one capacitor.

[0090] The circuit layer DP-CL can be disposed on the substrate layer BS. The circuit layer DP-CL may include a shielding electrode BML, a transistor TR, a connection electrode CNE, and multiple insulating layers BFL and INS1 to INS6. The multiple insulating layers BFL and INS1 to INS6 may include a buffer layer BFL and first insulating layers INS1 to sixth insulating layers INS6. However, Figure 4 The stacked structure of the circuit layer DP-CL shown is exemplary, and the stacked structure of the circuit layer DP-CL can be changed.

[0091] A shielding electrode BML can be disposed on the substrate layer BS. The shielding electrode BML can overlap with the transistor TR. The shielding electrode BML can block light incident on the transistor TR from the bottom of the display panel DP to protect the transistor TR. The shielding electrode BML may include a conductive material. When a voltage is applied to the shielding electrode BML, the threshold voltage of the transistor TR disposed on the shielding electrode BML can be maintained. However, embodiments of this disclosure are not limited thereto, and the shielding electrode BML can be a floating electrode. The shielding electrode BML may be omitted.

[0092] A buffer layer BFL can be disposed on the substrate layer BS to cover the shielding electrode BML. The buffer layer BFL may include an inorganic layer. The buffer layer BFL can improve the bonding strength between the substrate layer BS and the semiconductor pattern or conductive pattern disposed on the buffer layer BFL.

[0093] A transistor TR may include a source S1, a channel C1, a drain D1, and a gate G1. The source S1, channel C1, and drain D1 of the transistor TR may be formed from a semiconductor pattern. The semiconductor pattern of the transistor TR may include polycrystalline silicon, amorphous silicon, or metal oxide, and the material can be used without limitation as long as it has semiconductor properties, and this disclosure is not limited to specific embodiments.

[0094] A semiconductor pattern can include multiple regions divided according to conductivity levels. Regions in the semiconductor pattern that are doped with dopants or have reduced metal oxides can have relatively high conductivity and essentially serve as the source and drain electrodes of a transistor TR. Regions in the semiconductor pattern with relatively high conductivity can correspond to the source S1 and drain D1 of the transistor TR. Regions in the semiconductor pattern that are undoped, doped at a relatively low concentration, or have relatively low conductivity due to unreduced metal oxides can correspond to the channel C1 (or active portion) of the transistor TR.

[0095] A first insulating layer INS1 may cover the semiconductor pattern of transistor TR and is disposed on buffer layer BFL. The gate G1 of transistor TR may be disposed on the first insulating layer INS1. Gate G1 may overlap with the channel C1 of transistor TR. Gate G1 may be used as a mask in the process of doping the semiconductor pattern of transistor TR.

[0096] The second insulating layer INS2 may cover the gate G1 and is disposed on the first insulating layer INS1. The third insulating layer INS3 may be disposed on the second insulating layer INS2.

[0097] The connection electrode CNE may include a first connection electrode CNE1 and a second connection electrode CNE2 for electrically connecting the transistor TR and the light-emitting element ED to each other. However, the configuration of the connection electrode CNE for electrically connecting the transistor TR and the light-emitting element ED to each other is not limited thereto, and one of the first connection electrode CNE1 and the second connection electrode CNE2 may be omitted, or additional connection electrodes may be further included.

[0098] The first connecting electrode CNE1 can be disposed on the third insulating layer INS3. The first connecting electrode CNE1 can be connected to the drain electrode D1 through the first contact hole CH1 passing through the first insulating layer INS1 to the third insulating layer INS3. The fourth insulating layer INS4 can cover the first connecting electrode CNE1 and is disposed on the third insulating layer INS3. The fifth insulating layer INS5 can be disposed on the fourth insulating layer INS4.

[0099] The second connecting electrode CNE2 can be disposed on the fifth insulating layer INS5. The second connecting electrode CNE2 can be connected to the first connecting electrode CNE1 through the second contact hole CH2 passing through the fourth insulating layer INS4 and the fifth insulating layer INS5. The sixth insulating layer INS6 can cover the second connecting electrode CNE2 and is disposed on the fifth insulating layer INS5.

[0100] Each of the first insulating layer INS1 to the sixth insulating layer INS6 may comprise an inorganic layer or an organic layer. In embodiments, the inorganic layer may comprise at least one of, for example, alumina, titanium dioxide, silicon dioxide, silicon oxynitride, zirconium oxide, and hafnium oxide. The organic layer may comprise at least one of acrylic resins, methacrylic resins, polyisoprene resins, vinyl resins, epoxy resins, urethane resins, cellulose resins, siloxane resins, polyamide resins, and perylene resins.

[0101] The display element layer DP-ED may include a pixel-defining film (PDL) and a light-emitting element (ED). The light-emitting element ED may include a first electrode (AE), a hole control layer (HCL), a light-emitting layer (EML), an electronic control layer (TCL), and a second electrode (CE).

[0102] The first electrode AE ​​can be disposed on the sixth insulating layer INS6. The first electrode AE ​​can be connected to the second connecting electrode CNE2 through the third contact hole CH3 passing through the sixth insulating layer INS6. The first electrode AE ​​can be electrically connected to the drain D1 of the transistor TR through the first connecting electrode CNE1 and the second connecting electrode CNE2.

[0103] The first electrode AE ​​may comprise, or be composed of, a metallic material, a metallic alloy, or a conductive compound. The first electrode AE ​​may be an anode or a cathode. However, embodiments of this disclosure are not limited thereto. Furthermore, the first electrode AE ​​may be a pixel electrode. The first electrode AE ​​may be a transmissive electrode, a semi-transmissive / semi-reflective electrode, or a reflective electrode. The first electrode AE ​​may comprise at least one selected from the group consisting of Ag, Mg, Cu, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, LiF, Mo, Ti, W, In, Sn, and Zn, two or more compounds selected from this group, combinations of two or more selected from this group, or oxides thereof.

[0104] When the first electrode AE ​​is a transmission electrode, the first electrode AE ​​may include a transparent metal oxide, such as indium tin oxide (“ITO”), indium zinc oxide (“IZO”), zinc oxide (ZnO) or indium tin zinc oxide (“ITZO”). When the first electrode AE ​​is a semi-transmission / semi-reflection electrode or a reflection electrode, the first electrode AE ​​may include Ag, Mg, Cu, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, LiF, Mo, Ti, W, or compounds or combinations thereof (e.g., a combination of Ag and Mg), or a material having a multilayer structure such as LiF / Ca (a stacked structure of LiF and Ca) or LiF / Al (a stacked structure of LiF and Al). In an optional embodiment, the first electrode AE ​​may have a multilayer structure, the multilayer structure including: a reflective film or a semi-transparent / semi-reflective film, comprising or composed of the aforementioned materials; and a transparent conductive film, comprising, or composed of, ITO, IZO, zinc oxide (ZnO), or ITZO. In an embodiment, the first electrode AE ​​may have, for example, a three-layer structure of ITO / Ag / ITO, but the embodiments of this disclosure are not limited thereto. Furthermore, the embodiments of this disclosure are not limited thereto, and the first electrode AE ​​may include the aforementioned metallic materials, a combination of two or more metallic materials selected from the aforementioned metallic materials, or oxides of the aforementioned metallic materials, etc.

[0105] A pixel-defining film (PDL) can be disposed on a sixth insulating layer (INS6). A light-emitting opening (PX_OP) exposing a portion of the first electrode (AE) can be defined in the pixel-defining film (PDL). The portion of the first electrode (AE) exposed by the light-emitting opening (PX_OP) can be defined as the light-emitting region (LA).

[0106] The area with the pixel-limiting film (PDL) can correspond to the light-blocking region (NLA). Within the active region (AA-DM), the light-blocking region (NLA) can surround the emitting region (LA).

[0107] A hole control layer (HCL) can be disposed on the first electrode (AE) and the pixel defining film (PDL). The hole control layer (HCL) can be a common layer overlapping the light-emitting region (LA) and the light-blocking region (NLA). The hole control layer (HCL) can include at least one of a hole transport layer, a hole injection layer, and an electron blocking layer. The hole control layer (HCL) can include known hole injection materials and / or known hole transport materials.

[0108] The emitting layer (EML) can be disposed on the hole control layer (HCL). The EML can be disposed in the region corresponding to the emitting opening (PX_OP). Alternatively, the EML can be provided as a common layer. The EML can comprise organic and / or inorganic materials. The EML can emit light of any color: red, green, or blue.

[0109] An electron control layer (TCL) can be disposed on the light-emitting layer (EML). The TCL can be a common layer overlapping the light-emitting region (LA) and the light-blocking region (NLA). The TCL may include at least one of an electron transport layer, an electron injection layer, and a hole blocking layer. The TCL may include known electron injection materials and / or known electron transport materials.

[0110] The second electrode CE can be disposed on the electronic control layer TCL. The second electrode CE can be provided as a common layer overlapping the light-emitting region LA and the light-blocking region NLA. The second electrode CE can be commonly disposed on the pixel PX (reference). Figure 2 In, and to pixel PX (reference) Figure 2 Apply voltage.

[0111] The second electrode CE can be a common electrode. The second electrode CE can be a cathode or an anode, but the embodiments of this disclosure are not limited thereto. In embodiments, for example, when the first electrode AE ​​is an anode, the second electrode CE can be a cathode, and when the first electrode AE ​​is a cathode, the second electrode CE can be an anode.

[0112] The second electrode CE can be a transmission electrode, a semi-transmission / semi-reflection electrode, or a reflection electrode. When the second electrode CE is a transmission electrode, it can be composed of a transparent metal oxide such as ITO, IZO, zinc oxide (ZnO), or ITZO.

[0113] When the second electrode CE is a semi-transmissive / semi-reflective electrode or a reflective electrode, the second electrode CE may include Ag, Mg, Cu, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, LiF / Ca, LiF / Al, Mo, Ti, Yb, W, or compounds or combinations thereof (e.g., AgMg, AgYb, and MgYb). In optional embodiments, the second electrode CE may have a multilayer structure, the multilayer structure including: a reflective film or a semi-transmissive / semi-reflective film comprising or composed of the above-mentioned materials; and a transparent conductive film comprising, or composed of, ITO, IZO, zinc oxide (ZnO), or ITZO, etc. In embodiments, for example, the second electrode CE may include the above-mentioned metallic materials, a combination of two or more metallic materials selected from the above-mentioned metallic materials, or oxides of the above-mentioned metallic materials, etc.

[0114] An encapsulation layer TFE can be disposed on the second electrode CE and cover the light-emitting element ED. The encapsulation layer TFE may include multiple thin films. In an embodiment, the encapsulation layer TFE may include, for example, multiple inorganic films disposed on the second electrode CE and an organic film disposed between the multiple inorganic films. The inorganic films can protect the light-emitting element ED from moisture / oxygen, and the organic films can protect the light-emitting element ED from foreign matter such as dust particles.

[0115] The input sensing layer ISP may include a first sensing insulating layer IL1, a second sensing insulating layer IL2, and a third sensing insulating layer IL3. The input sensing layer ISP may include at least one conductive layer disposed on the sensing insulating layer. The input sensing layer ISP may include a first conductive layer CDL1 and a second conductive layer CDL2.

[0116] A first sensing insulating layer IL1 may be disposed on the encapsulation layer TFE. The first sensing insulating layer IL1 may include at least one inorganic insulating layer. The first sensing insulating layer IL1 may contact the encapsulation layer TFE. Alternatively, the first sensing insulating layer IL1 may be omitted, and in this case, the first conductive layer CDL1 may contact the encapsulation layer TFE.

[0117] A first conductive layer CDL1 may be disposed on a first sensing insulating layer IL1. The first conductive layer CDL1 may include a plurality of first conductive patterns. The plurality of first conductive patterns may be disposed on the first sensing insulating layer IL1. A second sensing insulating layer IL2 may be disposed on the first sensing insulating layer IL1 to cover at least a portion of the first conductive layer CDL1.

[0118] A second conductive layer CDL2 may be disposed on a second sensing insulating layer IL2. The second conductive layer CDL2 may include a plurality of second conductive patterns. The plurality of second conductive patterns may be disposed on the second sensing insulating layer IL2. The plurality of second conductive patterns may be connected to a plurality of first conductive patterns respectively through contact holes defined in the second sensing insulating layer IL2.

[0119] Each of the plurality of first conductive patterns in the first conductive layer CDL1 and the plurality of second conductive patterns in the second conductive layer CDL2 can be configured to correspond to the light-blocking region NLA. Each of the plurality of first conductive patterns in the first conductive layer CDL1 and the plurality of second conductive patterns in the second conductive layer CDL2 can correspond to a grid pattern.

[0120] The third sensing insulating layer IL3 may be disposed on the second sensing insulating layer IL2 and cover the second conductive layer CDL2. Each of the second sensing insulating layer IL2 and the third sensing insulating layer IL3 may include an inorganic insulating layer or an organic insulating layer.

[0121] Each of the first conductive layer CDL1 and the second conductive layer CDL2 may have a monolayer structure or a multilayer structure in which the layers are stacked along a third directional axis (also referred to as the third direction) DR3. The monolayer conductive layers CDL1 and CDL2 may include a metal layer or a transparent conductive layer. The metal layer may include molybdenum, silver, titanium, copper, aluminum, or alloys thereof. The transparent conductive layer may include transparent conductive oxides such as ITO, IZO, zinc oxide (ZnO), and IZTO. Furthermore, the transparent conductive layer may include conductive polymers such as poly(3,4-ethylenedioxythiophene) (“PEDOT”), metal nanowires, or graphene, etc.

[0122] The conductive layers CDL1 and CDL2, having a multilayer structure, may include metal layers. In an embodiment, the metal layers may have a three-layer structure, such as titanium (Ti) / aluminum (Al) / titanium (Ti). The conductive layers CDL1 and CDL2, having a multilayer structure, may include at least one metal layer and at least one transparent conductive layer.

[0123] Figure 5 This is an exploded perspective view illustrating an embodiment of a display device according to a portion of the present disclosure. Figure 5 It is shown that... Figure 2 A perspective view of the portion corresponding to area AA'. Figure 5 This may be a perspective view illustrating an embodiment of the undercoating LC according to this disclosure. In the following description, the undercoating LC may also be applied to the following purposes, except that it includes the flat portion PPO. Figure 3B The lower coating LC-X is shown in the diagram.

[0124] refer to Figure 5The lower coating LC may include a first coating LC-1 and a second coating LC-2. Based on the thickness direction DR3, the second coating LC-2 may be disposed below the first coating LC-1. That is, the second coating LC-2 may be connected to the display module DM (reference). Figure 2 The first coating LC-1 can be adjacent to the display module DM (reference). Figure 2 The second coating LC-2 is spaced apart from the first coating LC-1 and the display module DM (reference). Figure 2 The second coating LC-2 can be disposed between the first coating LC-1 and the display panel DP (reference). Figure 3A Between. In an embodiment, the second coating LC-2 may, for example, contact the display panel DP (reference). Figure 3A ).

[0125] Figure 6 and Figure 7 This is a cross-sectional view illustrating an embodiment of a display device according to a portion of the present disclosure. Figure 6 It is shown that... Figure 5 A cross-sectional view of the portion corresponding to line II-II'. Figure 6 It may be a cross-sectional view showing an embodiment of the first coating LC-1 according to the present disclosure. Figure 7 It is shown that... Figure 5 A cross-sectional view of the portion corresponding to line III-III'. Figure 7 This may be a cross-sectional view showing the second coating LC-2 according to this disclosure. Reference will be made below. Figures 5 to 7 Provide a description.

[0126] refer to Figure 6 The first coating LC-1 may include a first surface LC1_DF and a first opposing (or back-to-back) surface LC1_UF spaced apart from each other in the thickness direction DR3. In the first coating LC-1, the first surface LC1_DF may be adjacent to the display panel DP (reference). Figure 3A The lower surfaces are spaced apart, and the first opposing surface LC1_UF can be the display panel DP (reference). Figure 3A The adjacent upper surface. The first surface LC1_DF of the first coating LC-1 can be adjacent to the display panel DP (reference). Figure 3A The first surface of the first coating LC-1, LC1_UF, is spaced apart from the first surface LC1_DF and the display panel DP (reference). Figure 3A Between. The first opposing surface LC1_UF of the first coating LC-1 can be a flat surface. Conversely, the first opposing surface LC1_UF of the first coating LC-1 can not be a flat surface.

[0127] The lower surface of the lower coating LC, LC_DF (reference) Figure 3AThe first surface LC1_DF of the first coating LC-1 can be a first surface LC1_DF. The first surface LC1_DF of the first coating LC-1 can include a first protruding portion CPO-1. The first protruding portion CPO-1 of the first coating LC-1 can extend along a second direction axis (also referred to as the second direction) DR2. The first surface LC1_DF of the first coating LC-1 can also include a first flat portion PPO-1. The first protruding portion CPO-1 and the first flat portion PPO-1 can have an integral shape. In the lower coating LC, the protruding portion CPO (refer to...) Figure 3A The first protruding portion CPO-1 of the first coating LC-1 can be the first protruding portion of the first coating LC-1. In the lower coating LC, the flat portion PPO (refer to...) Figure 3A It can be the first flat portion of the first coating LC-1, PPO-1.

[0128] The first coating LC-1 may include a resin matrix BR and a plurality of first sub-carbon fillers CB1 dispersed in the resin matrix BR. Each of the first sub-carbon fillers CB1 may be a carbon fiber. In the first coating LC-1, the first sub-carbon fillers CB1 may be disposed in a first protruding portion CPO-1, and may not be disposed in a first flat portion PPO-1. Multiple first protruding portions CPO-1 may be provided, and the first sub-carbon fillers CB1 may be disposed in each of the plurality of first protruding portions CPO-1. Figure 6 The illustration shows three first sub-carbon fillers CB1 disposed in each of the first protrusions CPO-1, but the embodiments of this disclosure are not limited thereto.

[0129] refer to Figure 7 The second coating LC-2 may include a second surface LC2_DF and a second opposing surface LC2_UF spaced apart from each other in the thickness direction DR3. In the second coating LC-2, the second surface LC2_DF may be adjacent to the display panel DP (reference). Figure 3A The lower surface is spaced apart from the second opposing surface LC2_UF, and the second opposing surface LC2_UF can be the same as the display panel DP (reference). Figure 3A The adjacent upper surface. The second surface LC2_DF of the second coating LC-2 can be connected to the display panel DP (reference). Figure 3A The second coating LC-2 is spaced apart, and the second opposing surface LC2_UF is located between the second surface LC2_DF and the display panel DP (reference). Figure 3A Between. The second opposing surface LC2_UF of the second coating LC-2 can be a flat surface. Conversely, the second opposing surface LC2_UF of the second coating LC-2 can not be a flat surface.

[0130] The upper surface of the lower coating LC, LC_UF (reference) Figure 3AThe first surface of the first coating LC-1, LC-1, can be a second opposing surface LC2_UF. The second surface LC2_DF of the second coating LC-2 can include a second protruding portion CPO-2. The second protruding portion CPO-2 of the second coating LC-2 can extend along a first direction DR1. The direction in which the first protruding portion CPO-1 of the first coating LC-1 extends (i.e., the second direction DR2) and the direction in which the second protruding portion CPO-2 of the second coating LC-2 extends (i.e., the first direction DR1) can intersect each other. The second surface LC2_DF of the second coating LC-2 can also include a second flat portion PPO-2. The second protruding portion CPO-2 and the second flat portion PPO-2 can have an integral shape.

[0131] The second coating LC-2 may include a resin matrix BR and a plurality of second sub-carbon fillers CB2 dispersed in the resin matrix BR. Each of the second sub-carbon fillers CB2 may be a carbon fiber. In the second coating LC-2, the second sub-carbon fillers CB2 may be disposed in the second protruding portion CPO-2, and may not be disposed in the second flat portion PPO-2. Multiple second protruding portions CPO-2 may be provided, and the second sub-carbon fillers CB2 may be disposed in each of the multiple second protruding portions CPO-2. Figure 7 Three second sub-carbon fillers CB2 are shown disposed in each of the second protrusions CPO-2, but the embodiments of this disclosure are not limited thereto.

[0132] The resin matrix BR of the first coating LC-1 and the resin matrix BR of the second coating LC-2 may contain the same material. The resin matrix BR may be a photocurable resin matrix. The resin matrix BR may contain at least one of epoxy resin, acrylic resin, urethane resin, and siloxane resin. The first sub-carbon filler CB1 of the first coating LC-1 and the second sub-carbon filler CB2 of the second coating LC-2 may contain the same carbon fiber. Although the first sub-carbon filler CB1 of the first coating LC-1 and the second sub-carbon filler CB2 of the second coating LC-2 are the same carbon fiber, their orientation may be different.

[0133] Figure 8 It is shown that... Figure 2 A plan view of the part corresponding to area AA'. Figure 8 It can be shown Figure 5 The plan view of the lower coating LC is shown.

[0134] refer to Figure 8The undercoat LC may include a resin matrix BR and carbon filler CB dispersed in the resin matrix BR. The carbon filler CB may include a first sub-carbon filler CB1 and a second sub-carbon filler CB2. The weight of the carbon filler CB may be approximately 50 wt% to approximately 90 wt% relative to the total weight (100 wt%) of the undercoat LC. An undercoat LC comprising approximately 50 wt% to approximately 90 wt% of carbon filler CB relative to the total weight (100 wt%) of the undercoat LC can exhibit excellent heat dissipation, light blocking, shielding, and vibration damping properties. Therefore, the display device DD (reference DD) in the embodiments of this disclosure... Figure 2 It can exhibit excellent reliability. Furthermore, relative to the total weight (100wt%) of the undercoat LC, the undercoat LC comprising approximately 50wt% to approximately 90wt% of carbon filler CB can exhibit the property of being easily formed by a dotting method in the method of manufacturing a display device in the embodiments of this disclosure, which will be described later.

[0135] Conversely, undercoatings comprising less than 50 wt% carbon filler exhibit reduced heat dissipation, light blocking, shielding, and vibration damping properties relative to the total weight (100 wt%) of the undercoating. Undercoatings comprising more than 90 wt% carbon filler relative to the total weight (100 wt%) of the undercoating are unsuitable for formation by a dotting method in the methods of manufacturing display devices in the embodiments of this disclosure described later.

[0136] Each of the first sub-carbon fillers CB1 can be a carbon fiber with a rod shape. The length LH1 of the long side of each of the first sub-carbon fillers CB1 can be from about 10 micrometers (μm) to about 200 μm. The length LH1 of the long side of each of the first sub-carbon fillers CB1 can be from about 10 μm to about 50 μm or from about 150 μm to about 200 μm. The long side of each of the first sub-carbon fillers CB1 can be parallel to the first alignment direction ADR1. Each of the second sub-carbon fillers CB2 can be a carbon fiber with a rod shape. The length LH2 of the long side of each of the second sub-carbon fillers CB2 can be from about 10 μm to about 200 μm. The length LH2 of the long side of each of the second sub-carbon fillers CB2 can be from about 10 μm to about 50 μm or from about 150 μm to about 200 μm. The long side of each of the second sub-carbon fillers CB2 can be parallel to the second alignment direction ADR2. In an embodiment, Figure 5 The lower coating LC shown may include a first sub-carbon filler CB1 and a second sub-carbon filler CB2, the first sub-carbon filler CB1 and the second sub-carbon filler CB2 having long sides having lengths LH1 and LH2 of, for example, about 150 μm to about 200 μm.

[0137] The first sub-carbon filler CB1 can be disposed in the first protruding portion CPO-1, and the second sub-carbon filler CB2 can be disposed in the second protruding portion CPO-2. Figure 8 For ease of explanation, a first protrusion CPO-1 and a second protrusion CPO-2 disposed below the first protrusion CPO-1 are shown, and the boundary lines of each of the first protrusion CPO-1 and the second protrusion CPO-2 are shown in dashed lines.

[0138] The first sub-carbon filler CB1 can be disposed on the first arrangement direction ADR1. The first sub-carbon filler CB1 can be configured to form the first arrangement direction ADR1. The first sub-carbon filler CB1 can be arranged in a straight line on the second direction DR2. The second sub-carbon filler CB2 can be disposed on the second arrangement direction ADR2. The second sub-carbon filler CB2 can be configured to form the second arrangement direction ADR2. The second sub-carbon filler CB2 can be arranged in a straight line on the first direction DR1. The first arrangement direction ADR1 and the second arrangement direction ADR2 can intersect each other in a plan view. The first arrangement direction ADR1 can form an acute angle counterclockwise relative to the second direction DR2. The second arrangement direction ADR2 can form an acute angle counterclockwise relative to the first direction DR1. However, this is only one embodiment, and the first arrangement direction ADR1 and the second arrangement direction ADR2 are not limited to the specific embodiment, as long as they intersect each other in a plan view.

[0139] In the embodiments of this disclosure, the undercoat LC exhibits excellent stiffness and impact resistance by including carbon filler CB arranged in intersecting directions. The carbon filler CB arranged in intersecting directions can form a fabric shape. Therefore, the undercoat LC can exhibit excellent stiffness and impact resistance. Furthermore, when the display panel DP has a relatively thin thickness, the undercoat LC in the embodiments of this disclosure can stably support the display panel DP.

[0140] Figures 9 to 11 This is an exploded perspective view illustrating an embodiment of a display device according to a portion of the present disclosure. Figure 9 This is a perspective view illustrating an embodiment of the lower coating in another embodiment of this disclosure. Figure 5 Compared to the lower coating LC shown, Figure 9 The difference in the lower coating LC-a shown is that the lower coating LC-a also includes a third coating LC-3 and a fourth coating LC-4. Figure 10 It is shown that... Figure 9 A cross-sectional view of the portion corresponding to line IV-IV'. Figure 10 It may be a cross-sectional view showing an embodiment of the third coating LC-3 according to the present disclosure. Figure 11 It is shown that... Figure 9A cross-sectional view of the portion corresponding to line V-V' in an embodiment. Figure 11 This may be a cross-sectional view showing an embodiment of the fourth coating LC-4 according to this disclosure. Referring hereto... Figures 9 to 11 Provide a description. Figures 9 to 11 The description will no longer include references. Figures 1 to 8 The description repeats the content, and will mainly focus on the differences. In the following text, except for the lower coating LC-a, which includes the flat portions PPO-3 and PPO-4 (see reference). Figure 10 and Figure 11 In addition to the description of the lower coating LC-a, it can also be applied to Figure 3B The lower coating LC-X is shown in the diagram.

[0141] refer to Figure 9 The lower coating LC-a may include a first coating LC-1, a second coating LC-2, a third coating LC-3, and a fourth coating LC-4. Based on the thickness direction DR3, the third coating LC-3 and the fourth coating LC-4 may be disposed above the second coating LC-2. Based on the thickness direction DR3, the fourth coating LC-4 may be disposed on the upper side of the third coating LC-3. The third coating LC-3 may be disposed between the second coating LC-2 and the display panel DP (reference). Figure 3A The fourth coating LC-4 can be positioned between the third coating LC-3 and the display panel DP (reference). Figure 3A The fourth coating, LC-4, can be applied to the display panel DP (reference). Figure 3A The third coating LC-3 can be adjacent to the display panel DP (reference). Figure 3A The fourth coating, LC-4, is spaced apart from the third coating, LC-3, and the display panel, DP (reference). Figure 3A The fourth coating LC-4 may be spaced apart from the second coating LC-2, and the third coating LC-3 is located between the fourth coating LC-4 and the second coating LC-2. The third coating LC-3 may be spaced apart from the first coating LC-1, and the second coating LC-2 is located between the third coating LC-3 and the first coating LC-1. The carbon filler CB of the lower coating LC-a (reference) Figure 8 It may further include a third sub-carbon filler CB3 and a fourth sub-carbon filler CB4.

[0142] The third coating LC-3 may include a third surface LC3_DF and a third opposing surface LC3_UF spaced apart from each other in the thickness direction DR3. In the third coating LC-3, the third surface LC3_DF may be adjacent to the display panel DP (reference). Figure 3A The lower surface is spaced apart, and the third opposing surface LC3_UF can be the same as the display panel DP (reference). Figure 3AThe adjacent upper surface. The third surface LC3_DF of the third coating LC-3 can be connected to the display panel DP (reference). Figure 3A The third coating LC-3 is spaced apart, and the third opposing surface LC3_UF of the third coating LC-3 is located between the third surface LC3_DF and the display panel DP (reference). Figure 3A Between ), the third opposing surface LC3_UF of the third coating LC-3 can be a flat surface. Conversely, the third opposing surface LC3_UF of the third coating LC-3 can not be a flat surface.

[0143] The third surface LC3_DF of the third coating LC-3 may include a third protrusion CPO-3. The third protrusion CPO-3 of the third coating LC-3 may extend along the second direction DR2. The third protrusion CPO-3 of the third coating LC-3 may intersect with the first protrusion CPO-1 of the first coating LC-1 (see reference). Figure 5 and Figure 6 The third surface LC3_DF of the third coating LC-3 may also include a third flat portion PPO-3. The third protruding portion CPO-3 and the third flat portion PPO-3 may have an integral shape.

[0144] The third coating LC-3 may include a resin matrix BR and a plurality of third carbon fillers CB3 dispersed in the resin matrix BR. Each of the third carbon fillers CB3 may be a carbon fiber. In the third coating LC-3, the third carbon fillers CB3 may be disposed in the third protruding portion CPO-3, and may not be disposed in the third flat portion PPO-3. Multiple third protruding portions CPO-3 may be provided, and the third carbon fillers CB3 may be disposed in each of the multiple third protruding portions CPO-3. Figure 10 Three third sub-carbon fillers CB3 are shown disposed in each of the third protrusions CPO-3, but the embodiments of this disclosure are not limited thereto.

[0145] The arrangement direction of the third carbon filler CB3 can be the same as... Figure 8 The first sub-carbon filler CB1 shown has the same first arrangement direction ADR1. The third sub-carbon filler CB3 can be the same carbon fiber as the first sub-carbon filler CB1 and the second sub-carbon filler CB2. The resin matrix BR of the third coating LC-3 can be the same material as the resin matrix BR of the first coating LC-1 and the second coating LC-2.

[0146] The fourth coating LC-4 may include a fourth surface LC4_DF and a fourth opposing surface LC4_UF spaced apart from each other in the thickness direction DR3. In the fourth coating LC-4, the fourth surface LC4_DF may be adjacent to the display panel DP (reference). Figure 3A The lower surfaces are spaced apart, and the fourth opposing surface LC4_UF can be the display panel DP (reference). Figure 3A The adjacent upper surface. The fourth surface LC4_DF of the fourth coating LC-4 can be connected to the display panel DP (reference). Figure 3A The fourth surface of the fourth coating LC-4, LC4_UF, is spaced apart from the fourth surface LC4_DF and the display panel DP (reference). Figure 3A Between ), the fourth opposing surface LC4_UF of the fourth coating LC-4 can be a flat surface. Conversely, the fourth opposing surface LC4_UF of the fourth coating LC-4 can not be a flat surface.

[0147] The fourth surface LC4_DF of the fourth coating LC-4 may include a fourth protrusion CPO-4. The fourth protrusion CPO-4 of the fourth coating LC-4 may extend along the first direction DR1. The fourth protrusion CPO-4 of the fourth coating LC-4 may intersect with the second protrusion CPO-2 of the second coating LC-2 (see reference). Figure 5 and Figure 7 The fourth surface LC4_DF of the fourth coating LC-4 may also include a fourth flat portion PPO-4. The fourth protruding portion CPO-4 and the fourth flat portion PPO-4 may have an integral shape.

[0148] The fourth coating LC-4 may include a resin matrix BR and a plurality of fourth sub-carbon fillers CB4 dispersed in the resin matrix BR. Each of the fourth sub-carbon fillers CB4 may be a carbon fiber. In the fourth coating LC-4, the fourth sub-carbon fillers CB4 may be disposed in the fourth protruding portion CPO-4, and may not be disposed in the fourth flat portion PPO-4. Multiple fourth protruding portions CPO-4 may be provided, and the fourth sub-carbon fillers CB4 may be disposed in each of the multiple fourth protruding portions CPO-4. Figure 11 Three fourth sub-carbon fillers CB4 are shown disposed in each of the fourth protrusions CPO-4, but the embodiments of this disclosure are not limited thereto.

[0149] The arrangement direction of the fourth carbon filler CB4 can be the same as... Figure 8The second sub-carbon filler CB2 shown has the same second arrangement direction ADR2. The fourth sub-carbon filler CB4 can be the same carbon fiber as the first sub-carbon filler CB1, the second sub-carbon filler CB2, and the third sub-carbon filler CB3. The third sub-carbon filler CB3 and the fourth carbon filler CB4 can be the same carbon fiber, and only their arrangement directions can be different from each other. The resin matrix BR of the fourth coating LC-4 can include the same material as the resin matrix BR of the first coating LC-1, the second coating LC-2, and the third coating LC-3.

[0150] refer to Figure 8 The descriptions of the first and second sub-carbon fillers CB1 and CB2 can be applied to the third and fourth sub-carbon fillers CB3 and CB4, respectively. Each of the third and fourth sub-carbon fillers CB3 and CB4 can be a carbon fiber with a rod shape. The length of the long side of each of the third sub-carbon fillers CB3 can be from about 10 μm to about 200 μm. The length of the long side of each of the third sub-carbon fillers CB3 can be from about 10 μm to about 50 μm or from about 150 μm to about 200 μm. The length of the long side of each of the third sub-carbon fillers CB3 is the same as the length LH1 of the long side of each of the first sub-carbon fillers CB1, and they are referred to by the same reference numerals below.

[0151] The length of the long side of each of the fourth sub-carbon fillers CB4 can be from approximately 10 μm to approximately 200 μm. The length of the long side of each of the fourth sub-carbon fillers CB4 can be from approximately 10 μm to approximately 50 μm or from approximately 150 μm to approximately 200 μm. The length of the long side of each of the fourth sub-carbon fillers CB4 is the same as the length LH2 of the long side of each of the second sub-carbon fillers CB2, and they are referred to by the same reference numerals hereinafter. In an embodiment, Figure 9 The lower coating LC-a shown may include a first sub-carbon filler CB1, a second sub-carbon filler CB2, a third sub-carbon filler CB3 and a fourth sub-carbon filler CB4, the first sub-carbon filler CB1, the second sub-carbon filler CB2, the third sub-carbon filler CB3 and the fourth sub-carbon filler CB4 having long sides having lengths LH1 and LH2 of, for example, about 10 μm to about 50 μm.

[0152] The lower coating LC-a, comprising a plurality of sub-carbon fillers CB1, CB2, CB3, and CB4 arranged in intersecting directions, exhibits excellent stiffness and impact resistance. The sub-carbon fillers CB1, CB2, CB3, and CB4 arranged in intersecting directions can form a fabric shape. Therefore, the lower coating LC-a exhibits excellent stiffness and impact resistance. The display device DD (reference DD) in the embodiments of this disclosure includes the lower coating LC-a. Figure 1It can exhibit excellent reliability.

[0153] The display device in the embodiments of this disclosure can be manufactured by the method of manufacturing a display device according to this disclosure. Figure 12A and Figure 12B This is a flowchart illustrating an embodiment of a method for manufacturing a display device according to the present disclosure. Figures 13 to 17 An embodiment of the steps for manufacturing a display device according to the present disclosure is illustrated schematically. In the following, in... Figures 12A to 17 The description will no longer include references. Figures 1 to 11 The description will repeat the same content, and the main focus will be on the differences.

[0154] refer to Figure 12A The method for manufacturing a display device in the embodiments of this disclosure may include: preparing a display panel (S100); and providing an undercoat on one surface of the display panel (S200). Reference Figure 12B Providing a lower coating (S200) may include: forming a preliminary second coating (S210); curing the preliminary second coating to form a second coating (S220); forming a preliminary first coating (S230); and curing the preliminary first coating to form a first coating (S240).

[0155] refer to Figure 13 The second coating composition COP2 can be provided on one surface DP_DF of the display panel DP. The display panel DP may include a surface DP_DF and an opposing surface DP_UF spaced apart from each other in the thickness direction DR3. In the thickness direction DR3, one surface DP_DF of the display panel DP may be a surface of the display panel DP that can be coated with the underlying coating LC (reference). Figure 3A The adjacent lower surface. In the thickness direction DR3, the opposite surface DP_UF of the display panel DP can be the upper surface of the display panel DP. The opposite surface DP_UF of the display panel DP can be the lower coating LC (reference). Figure 3A The two surfaces are spaced apart, and one surface DP_DF of the display panel DP is located between the opposite surface DP_UF of the display panel DP and the undercoat LC (reference). Figure 3A )between.

[0156] The second coating composition COP2 is a liquid composition and can be supplied by a dotting method. Therefore, coatings can be formed according to components with various shapes. The second coating composition COP2 can be supplied by a device MH. The device MH may include a controller NT and multiple supply units PZ. Each of the supply units PZ includes a nozzle, and the second coating composition COP2 can be supplied through multiple nozzles. The controller NT can control the moving speed of the supply units PZ and the discharge rate of the composition. The device MH can move in a plane along a first moving direction MR1, and the first moving direction MR1 can be parallel to a first direction DR1. When the device MH moves, the speed of the device MH can be approximately 100 mm / s or greater. Because the moving speed of the device MH is approximately 100 mm / s or greater, it is easy to supply components including the initial second carbon filler P-CB2 (reference). Figure 14 The second coating composition COP2 is used. The nozzle of the device moving at a speed less than approximately 100 mm / s becomes clogged, thus reducing manufacturing efficiency. Conversely, the method of manufacturing the display device in the embodiments of this disclosure, using a device MH moving at a speed of approximately 100 mm / s or greater when providing the second coating composition COP2, exhibits excellent manufacturing efficiency. The second coating composition COP2 can be provided in a plane along a first direction DR1 from one side of the display panel DP to the opposite side. One side and the opposite side of the display panel DP can be spaced apart from each other in the first direction DR1.

[0157] Figure 14 The second coating composition COP2 is schematically shown. The second coating composition COP2 may include a preliminary resin matrix P-BR and a plurality of preliminary second carbon fillers P-CB2 dispersed in the preliminary resin matrix P-BR. The preliminary resin matrix P-BR may include at least one selected from epoxy resins, acrylic resins, urethane resins, and siloxane resins. The preliminary second carbon fillers P-CB2 may be carbon fibers.

[0158] The weight of the initial second carbon filler P-CB2 relative to the total weight of the second coating composition COP2 can be approximately 50 wt% to approximately 90 wt%. The second coating composition COP2 including the initial second carbon filler P-CB2 within this weight range can form a second coating LC-2 with excellent stiffness and impact resistance (see reference). Figure 5 ).

[0159] Each of the preliminary second carbon filler P-CB2 can have a rod shape, and the length of the long side of each of the preliminary second carbon filler P-CB2 can be from about 10 μm to about 200 μm. The length of the long side of each of the preliminary second carbon filler P-CB2 can be from about 10 μm to about 50 μm or from about 150 μm to about 200 μm. The second coating composition COP2 comprising preliminary second carbon filler P-CB2 satisfying such length ranges can exhibit ease of application from the providing unit PZ (reference). Figure 13 The second coating composition COP2 may also include additives known in the art to improve the characteristics of the lower coating LC (refer to...). Figure 2 The characteristics of (heat dissipation, light blocking, shielding and shock absorption).

[0160] A second coating composition COP2 can be provided to form Figure 15 The preliminary second coating P-LC-2 is shown in the image. (Reference) Figure 15 The initial second coating P-LC-2 thickness W2 can be from approximately 5 μm to approximately 30 μm. An initial second coating P-LC-2 meeting this thickness W2 range can form a second coating LC-2 with excellent stiffness and impact resistance after curing (see reference). Figure 5 ).

[0161] A strong light (e.g., ultraviolet LV) can be provided on the preliminary second coating P-LC-2. The ultraviolet LV can be provided by a device MH. Each of the providing units PZ can include a light irradiator, and the ultraviolet LV can be provided by the light irradiator. The providing unit PZ can include a nozzle and a light irradiator, and the device MH can be a device in which the coating unit (i.e., the nozzle) and the curing unit (i.e., the light irradiator) are integrated with each other. The device MH can move in a plane along a first moving direction MR1, and the first moving direction MR1 can be parallel to a first direction DR1. The ultraviolet LV can be provided in a plane along the first direction DR1 from one side of the display panel DP to the opposite side. One side is where the second coating composition COP2 (reference) is provided earlier than the opposite side. Figure 13 The initial second coating P-LC-2 is formed by providing the second coating composition COP2 (reference) later. Figure 13 The initial second coating P-LC-2 is formed by irradiation with ultraviolet light (LV) at an earlier stage by providing the second coating composition COP2 (see reference). Figure 13The initial second coating P-LC-2 is formed. That is, the starting point for providing the second coating composition COP2 can be substantially the same as the starting point for providing ultraviolet light (LV), and the ending point for providing the second coating composition COP2 can be substantially the same as the ending point for providing ultraviolet light (LV). In other words, the ultraviolet light (LV) can be provided first to the portion where the second coating composition COP2 is provided earlier.

[0162] When the ultraviolet light (LV) is first applied to the portion where the second coating composition COP2 is applied earlier, the preliminary second coating P-LC-2 can cure in the thickness direction DR3 until its depth. The depth of the preliminary second coating P-LC-2 can be spaced relatively far from the application unit PZ in the thickness direction DR3. When the starting point of the application of the ultraviolet light (LV) coincides with the ending point of the application of the second coating composition COP2, the preliminary second coating P-LC-2 may not cure until its depth, thus reducing processability. When the second coating composition COP2 (refer to...) is applied... Figure 13 Between the initial resin matrix P-BR (reference) and the UV-providing LV, Figure 14 It can be spread on a plane. The liquid initial resin matrix P-BR can be spread on a plane, and this can happen in seconds.

[0163] When the initial second coating P-LC-2 is cured by ultraviolet light (LV), it can form Figure 16 The second coating LC-2 is shown. When the initial resin matrix P-BR (reference) is cured... Figure 14 When ), a resin matrix BR can be formed (refer to...). Figure 7 The second carbon filler CB2 can be formed from the initial second carbon filler P-CB2 (see reference). Figure 7 ).

[0164] Subsequently, for the first coating LC-1 (reference) Figure 5 and Figure 6 The formation of ) can be as follows Figure 16 The diagram shows a first coating composition COP1. The first coating composition COP1 is a liquid composition and can be provided by a dotting method. The first coating composition COP1 and the second coating composition COP2 can be substantially the same material. The first coating composition COP1 may include a preliminary resin matrix P-BR (reference...). Figure 14 ) and the initial first carbon filler dispersed in the initial resin matrix P-BR. The initial first carbon filler is together with the initial second carbon filler P-CB2 (reference) Figure 14 The same carbon fibers are used, and the same reference numerals are used for them in the following figures.

[0165] Relative to the total weight of the first coating composition COP1, the initial first carbon filler P-CB2 (reference) Figure 14 The weight of the primary carbon filler P-CB2 (reference) can range from approximately 50 wt% to approximately 90 wt%. This includes the primary first-stage carbon filler P-CB2, which meets this weight range. Figure 14 The first coating composition COP1 can form a lower coating LC with excellent stiffness and impact resistance (reference). Figure 5 Additionally, this includes the initial first carbon filler P-CB2 (reference) that meets such a weight range. Figure 14 The first coating composition COP1 can exhibit properties that are easily provided by a dotting method.

[0166] The first coating composition COP1 can be provided on the second surface LC2_DF of the second coating LC-2 (reference). Figure 7 The first coating composition COP1 can be directly applied to the second surface LC2_DF of the second coating LC-2 (reference). Figure 7 The first coating composition COP1 can be provided via device MH.

[0167] When the first coating composition COP1 is provided, the device MH can move in the second movement direction MR2. The second movement direction MR2 can intersect the first movement direction MR1 and can be parallel to the second direction MR2. The movement direction of the device MH in forming the preliminary second coating P-LC-2 and the second coating LC-2 (i.e., the first movement direction MR1) and the movement direction of the device MH in forming the preliminary first coating P-LC-1 and the first coating LC-1 (refer to...) Figure 5 and Figure 6 The directions of movement (i.e., the second direction of movement MR2) in the ) can intersect each other. The lower coating LC is formed by a device MH that moves in intersecting directions in this way (see reference). Figure 5 The method can be similar to a weaving method. Therefore, as described above, a first sub-carbon filler CB1 and a second sub-carbon filler CB2 (refer to...) can be formed, comprising a first sub-carbon filler CB1 and a second sub-carbon filler CB2 whose arrangement directions intersect each other. Figure 8 The lower coating LC (reference) Figure 5 ).

[0168] Conventional coating compositions, including or consisting of a relatively large amount of carbon filler dispersed in a resin matrix, cannot be readily cured by light. In embodiments of this disclosure, coating compositions COP1 and COP2 can be provided in a relatively thin thickness by providing coating compositions COP1 and COP2 multiple times in directions that intersect each other. Therefore, coating compositions COP1 and COP2 provided in a relatively thin thickness can exhibit the characteristic of being readily cured by light.

[0169] By providing the first coating composition COP1, a coating can be formed as follows: Figure 17The preliminary first coating P-LC-1 is shown. The thickness W1 of the preliminary first coating P-LC-1 can be from approximately 5 μm to approximately 30 μm. A preliminary first coating P-LC-1 meeting such a thickness W1 range can form a lower coating LC (reference) after curing, which has excellent stiffness and impact resistance. Figure 5 ).

[0170] Ultraviolet (UV) light can be applied to the preliminary first coating P-LC-1 using the apparatus MH. The starting point for applying the UV LV can be substantially the same as the starting point for applying the first coating composition COP1, and the ending point for applying the UV LV can also be substantially the same as the ending point for applying the first coating composition COP1. Therefore, the preliminary first coating P-LC-1 can be cured along the thickness direction DR3 to its depth, and a first coating LC-1 with excellent processability can be formed (see reference). Figure 5 and Figure 6 Furthermore, the method for manufacturing the display device in the embodiments of this disclosure can exhibit excellent manufacturing efficiency.

[0171] Unlike what is shown, a second coating composition COP2 (reference) can be provided on a separate substrate. Figure 14 The second coating composition COP2 (reference) is cured and provided on the substrate. Figure 14 To form the second coating LC-2 (reference) Figure 5 and Figure 7 The first coating composition COP1 (see reference) can be provided on a separate substrate. Figure 16 ) and cure to provide a first coating composition COP1 (reference) on the substrate. Figure 16 To form the first coating LC-1 (reference) Figure 5 and Figure 6 A first coating composition COP1 (reference) is provided. Figure 16 The direction of the second coating composition COP2 (reference) and the provision of the second coating composition. Figure 14 The directions of the coatings LC-1 and LC-2 can intersect each other. A single substrate can be used without restriction, as long as it is a component used to form the first coating LC-1 and the second coating LC-2. Subsequently, the second coating LC-2 (refer to...) Figure 5 and Figure 7 ) and the first coating LC-1 (reference) Figure 5 and Figure 6 It can be sequentially provided on the display panel DP (reference) Figure 13 A surface DP_DF (reference) Figure 13 )superior.

[0172] Figure 18A and Figure 18B An embodiment of the steps for manufacturing a display device according to the present disclosure is illustrated schematically. Figure 18A and Figure 18B This is a schematic plan view of the device MH, and also shows a view taken from above the device MH. (Reference) Figure 18A The device MH may include providing units PZ arranged side-by-side at regular intervals in the first direction DR1. Figure 18A Compared to the device MH shown, Figure 18B The difference in the device MH shown is that the providing units PZ-a are not arranged side-by-side in the first direction DR1, but are instead arranged to form an oblique line. The current coating LC (reference) Figure 3A )Depend on Figure 18A When the apparatus MH shown is formed, the lower coating LC can be formed as follows: Figure 3A The formation shown is as illustrated. That is, a formation including a protruding portion CPO (reference) can be formed. Figure 3A ) and flat portion PPO (reference) Figure 3A The lower coating LC (reference) Figure 3A ).

[0173] Figure 18B The provided unit PZ-a can be compared to Figure 18A The spacing of the unit PZ is narrow. Figure 18B The supply units PZ-a can be arranged diagonally and with relatively narrow intervals. The coating compositions COP1 and COP2 discharged from the supply units PZ-a with their relatively narrow intervals can be adjacent to each other. Therefore, when passing through… Figure 18B The apparatus shown MH forms the lower coating LC-X (reference). Figure 3B When ), the lower coating LC-X can be as follows: Figure 3B The formation shown is as illustrated. That is, a formation including a protruding portion CPO (reference) can be formed. Figure 3B And does not include the flat portion PPO (reference). Figure 3A The lower coating LC-X (reference) Figure 3B ).

[0174] The method of manufacturing a display device in the embodiments of this disclosure may further include: forming a preliminary fourth coating; curing the preliminary fourth coating to form a fourth coating; forming a preliminary third coating; and curing the preliminary third coating to form a third coating. The formation of the preliminary fourth coating, the fourth coating, the formation of the preliminary third coating, and the formation of the third coating can be performed before the formation of the preliminary second coating. That is, the part closest to the display panel DP (reference) Figure 3A The fourth coating LC-4 (reference) Figure 9 It can be formed earliest and is furthest from the display panel DP (reference). Figure 3A The first coating LC-1 (reference) Figure 9 It can be formed in the end.

[0175] In addition to providing the location of the fourth coating composition, the fourth coating LC-4 (reference) is formed. Figure 9 The method can be used to form a second coating LC-2 (see reference). Figure 9 The method is carried out in the same manner. A preliminary fourth coating can be formed by providing a fourth coating composition, and a fourth coating LC-4 (refer to) can be formed by curing the preliminary fourth coating. Figure 9 The fourth coating composition can be provided on the display panel DP (reference). Figure 13 A surface DP_DF (reference) Figure 13 The fourth coating composition can be directly applied to the display panel DP (reference). Figure 13 On one side of the coating. The fourth coating composition is a liquid composition and can be provided by a dotting method.

[0176] The fourth coating composition includes the second coating composition COP2 (reference). Figure 14 The materials are the same as those used in the drawings, and the same reference numerals are used for them hereinafter. The fourth coating composition may include a preliminary resin matrix P-BR (refer to...). Figure 14 ) and dispersed in the initial resin matrix P-BR (reference) Figure 14 The preliminary fourth carbon packing in ) . The preliminary fourth carbon packing and the preliminary second carbon packing P-CB2 (reference) Figure 14 () are the same carbon fibers, and the same reference numerals are used for them in the following text.

[0177] For providing the fourth coating composition COP2 (reference) Figure 14 ) device MH (reference) Figure 13 The direction of movement of ) can be consistent with that used to provide the second coating composition COP2 (reference) Figure 13 ) device MH (reference) Figure 13 The direction of movement (i.e., the first direction of movement MR1) is the same. This can be achieved by providing a fourth coating composition COP2 (refer to...). Figure 14 The initial fourth coating formed provides ultraviolet (LV) light (reference). Figure 15 To form the fourth coating LC-4 (reference) Figure 9 Used to provide ultraviolet light (LV) to the initial fourth coating (reference). Figure 15 ) device MH (reference) Figure 15 The direction of movement can be the same as that used for the initial second coating P-LC-2 (reference). Figure 15 Provides ultraviolet light LV (reference) Figure 15 ) device MH (reference) Figure 15 The direction of movement (i.e., the first direction of movement MR1) is the same.

[0178] In addition to providing the location of the third coating composition, it can be used in conjunction with the formation of the first coating LC-1 (reference). Figure 9 The method for forming the third coating LC-3 is the same as that used in the previous method (see reference). Figure 9 The method involves providing a third coating composition to form a preliminary third coating, and curing the preliminary third coating to form the third coating LC-3 (see reference). Figure 9 The third coating composition can be provided in the fourth coating LC-4 (reference). Figure 11 The fourth surface LC4_DF (reference) Figure 11 The third coating composition can be directly provided on the fourth coating LC-4 (reference). Figure 11 The fourth surface LC4_DF (reference) Figure 11 The third coating composition is a liquid composition and can be provided by a dotting method.

[0179] The third coating composition may include components similar to the first coating composition COP1 (reference). Figure 16 The third coating composition comprises the same material as the second coating composition COP2 (reference). Figure 14 The materials used are the same as those used in the drawings below. The third coating composition COP2 may include the initial resin matrix P-BR (see reference ). Figure 14 ) and dispersed in the initial resin matrix P-BR (reference) Figure 14 The preliminary third carbon filler is the same as the preliminary second carbon filler P-CB2 (reference). Figure 14 The same carbon fibers are used, and the same reference numerals are used for them in the following text.

[0180] Apparatus MH for providing the third coating composition COP2 (reference) Figure 16 The direction of movement of the first coating composition COP1 (reference) can be the same as that used to provide the first coating composition. Figure 16 ) device MH (reference) Figure 16 The direction of movement (i.e., the second direction of movement MR2) is the same. Ultraviolet light (LV) can be applied to the preliminary third coating formed by providing the third coating composition COP2. Figure 17 To form the third coating LC-3 (reference) Figure 9 Used to provide ultraviolet light (LV) to the initial third coating (reference). Figure 17 ) device MH (reference) Figure 17 The direction of movement of ) can be the same as that used for the initial first coating P-LC-1 (reference) Figure 17 Provides ultraviolet light LV (reference) Figure 17 ) device MH (reference) Figure 17The direction of movement (i.e., the second direction of movement MR2) is the same.

[0181] The above has described the first coating LC-1, the second coating LC-2, the third coating LC-3, and the fourth coating LC-4 (see reference). Figure 9 The lower coating LC-a (reference) Figure 9 The coating is formed by applying the coating composition four times, but the embodiments of this disclosure are not limited thereto. In embodiments, the lower coating may be formed, for example, by applying the coating composition five or more times in directions that intersect each other.

[0182] The method of manufacturing a display device in the embodiments of this disclosure may include providing a coating composition comprising carbon filler to form a lower coating. The coating composition is a liquid composition and can be provided by a dot-coating method. Therefore, the method of manufacturing a display device in the embodiments of this disclosure can exhibit excellent manufacturing efficiency.

[0183] The display device in the embodiments of this disclosure can be manufactured by the method of manufacturing a display device according to this disclosure. The display device in the embodiments of this disclosure may include a lower coating layer disposed beneath the display panel. The lower coating layer is a functional layer that performs multiple functions such as heat dissipation, light blocking, shielding, and vibration damping, and may include carbon fillers arranged in intersecting directions. Therefore, display devices including a lower coating layer can have reduced thickness and exhibit excellent reliability.

[0184] By including an undercoat consisting of carbon fillers arranged in intersecting directions, the display device in the embodiments of this disclosure can have a reduced thickness and exhibit excellent reliability.

[0185] The method of manufacturing a display device in the embodiments of this disclosure includes providing a coating composition comprising carbon filler to form an undercoat, so the method can exhibit excellent manufacturing efficiency.

[0186] Although the preferred embodiments of the present disclosure have been described above with reference to them, it will be understood by those skilled in the art or of ordinary skill in the art that various modifications and changes may be made to the present disclosure without departing from the spirit and technical scope of the present disclosure as described in the appended claims.

[0187] Therefore, the technical scope of this disclosure should not be limited to the content described in the detailed description of the specification, but should be determined by the claims.

Claims

1. An electronic device, characterized by comprising: The electronic device includes: The lower coating includes: Resin matrix; Multiple carbon fillers are dispersed in the resin matrix, the multiple carbon fillers comprising: Multiple first-stage carbon fillers are arranged in a first arrangement direction; and Multiple second carbon fillers are arranged in a second arrangement direction that intersects with the first arrangement direction; The lower surface; and The upper surface is opposite to the lower surface; and A display panel is disposed on the lower coating. in: The lower surface of the lower coating includes a protruding portion that protrudes in a direction away from the display panel, and the lower surface of the lower coating is spaced apart from the display panel, and the upper surface of the lower coating is located between the lower surface of the lower coating and the display panel. 2.The electronic device of claim 1, wherein, Each of the plurality of carbon fillers is a carbon fiber. 3.The electronic device of claim 1, wherein, The lower coating layer includes: A first coating comprising the resin matrix and the plurality of first sub-carbon fillers dispersed in the resin matrix; and The second coating includes the resin matrix and the plurality of second sub-carbon fillers dispersed in the resin matrix, and the second coating is disposed between the first coating and the display panel. 4.The electronic device of claim 3, wherein, The lower surface of the lower coating is the lower surface of the first coating.

5. The electronic device according to claim 1, characterized in that: The lower surface of the lower coating also includes a flat portion adjacent to the protruding portion; and The plurality of first sub-carbon fillers are disposed in the protruding portion and not in the flat portion. 6.The electronic device of claim 3, wherein, The plurality of carbon fillers also include: Multiple third-generation carbon fillers are arranged in the first arrangement direction; and Multiple fourth-order carbon fillers are arranged in the second arrangement direction. The lower coating layer further includes: The third coating comprises the resin matrix and the plurality of third carbon fillers dispersed in the resin matrix, and the third coating is disposed between the second coating and the display panel; and The fourth coating comprises the resin matrix and the plurality of fourth sub-carbon fillers dispersed in the resin matrix, and the fourth coating is disposed between the third coating and the display panel. 7.The electronic device of claim 1, wherein, Each of the plurality of carbon fillers has a rod shape, and the length of the long side of the rod shape is from 10 micrometers to 200 micrometers.

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