Display device and method of manufacturing the same

Abstract

The present application relates to a display device and a method for manufacturing the display device. The method for manufacturing the display device includes: preparing a base substrate including a first region, a second region, and a curved region disposed between the first region and the second region, the base substrate having a coating film pattern formed on a first surface of the base substrate in the curved region; arranging a support plate on the first surface of the base substrate to cover the coating film pattern, the support plate including an adhesive film and a support film; and separating the support plate and the coating film pattern overlapping each other in a thickness direction from the base substrate, wherein arranging the support plate includes arranging the support plate so that the adhesive film contacts the coating film pattern and the first surface of the base substrate.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2018-0078139, filed on Jul. 5, 2018, which is hereby incorporated by reference for all purposes as if fully set forth herein. Technical Field

[0003] Exemplary embodiments / embodiments of the present invention generally relate to a display device and a method of manufacturing the same. Background Art

[0004] Recently, a flexible display device has attracted attention as a next-generation display device. A flexible display device is a display device having a display unit, signal wiring, etc. formed on a flexible substrate made of a flexible material such as plastic, and such a flexible display device can display an image even when bent like paper.

[0005] The application range of flexible display devices has diversified and expanded from computer monitors and televisions (TVs) to personal portable devices, and research has been conducted on flexible display devices having a large display area and reduced volume and weight.

[0006] There are mainly two types of flexible display device manufacturing methods, namely, a cell-based display device manufacturing method in which each individual display device is separately manufactured, and a mother substrate-based display device manufacturing method in which a plurality of display devices are simultaneously manufactured using a mother substrate and are subsequently separated from each other. The cell-based display device manufacturing method manufactures a single display device at a time and is disadvantageous relative to the mother substrate-based display device manufacturing method in terms of processing time and cost.

[0007] The above information disclosed in this Background section is only for understanding the background of the present inventive concept and therefore the above information may contain information that does not constitute the prior art. Summary of the invention

[0008] Exemplary embodiments of the present disclosure provide a display device that can be easily bent and can prevent cracking of a display panel.

[0009] Exemplary embodiments of the present disclosure also provide a method of manufacturing a display device, which may allow a supporting film to be easily cut in a bending region and may prevent damage to a base substrate.

[0010] Additional features of the inventive concept will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the inventive concept.

[0011] According to an exemplary embodiment, a method for manufacturing a display device is provided, the method including: preparing a base substrate, the base substrate including a first region, a second region, and a curved region arranged between the first region and the second region, and having a coating film pattern formed on a first surface of the base substrate in the curved region; providing a support plate on the first surface of the base substrate to cover the coating film pattern, the support plate including an adhesive film and a support film; and separating the support plate and the coating film pattern overlapping each other in a thickness direction from the base substrate, wherein providing the support plate includes providing the support plate so that the adhesive film contacts the coating film pattern and the first surface of the base substrate.

[0012] In exemplary embodiments, separating the support plate and the coating film pattern may include scribing the support plate.

[0013] In an exemplary embodiment, scoring the support plate may include scoring the support plate along a first boundary between the first region and the curved region and along a second boundary between the second region and the curved region.

[0014] In an exemplary embodiment, scoring the support plate may further include scoring the support plate along both the first boundary and the second boundary.

[0015] In an exemplary embodiment, scoring the support plate may include dividing the support plate into a first support plate located in the first region and a second support plate located in the second region.

[0016] In an exemplary embodiment, scoring the support plate may include using a laser component or a hot knife.

[0017] In an exemplary embodiment, each of the first support plate and the second support plate may include a ridge-shaped portion proximate the bending area.

[0018] In an exemplary embodiment, separating the support plate and the coating film pattern may include separating both the scored support plate in the bending region and the coating film pattern coupled with the adhesive film of the scored support plate in the bending region.

[0019] In exemplary embodiments, providing the support plate may include coupling the adhesive film and the coating film pattern together.

[0020] In exemplary embodiments, a first adhesive force between the adhesive film and the coating film pattern may be greater than a second adhesive force between the base substrate and the coating film pattern.

[0021] In exemplary embodiments, the third adhesive force between the adhesive film and the first surface of the base substrate may be greater than the second adhesive force.

[0022] In an exemplary embodiment, the first adhesive force may be the same when both the support plate and the coating film pattern are separated and the support plate is provided, and the second adhesive force may be the same when both the support plate and the coating film pattern are separated and the support plate is provided.

[0023] In exemplary embodiments, the coating film pattern may include at least one of olefin, silicone resin, long-chain alkyl, and fluorine molecules, and the adhesive film may include a pressure sensitive adhesive (PSA).

[0024] According to an exemplary embodiment, a display device includes: a base substrate including a first region, a second region and a bending region, the bending region being arranged between the first region and the second region; a first supporting plate and a second supporting plate which are arranged on a first surface of the base substrate and are separated from each other, wherein the bending region is arranged between the first supporting plate and the second supporting plate; and a first coating film pattern which is arranged between the first supporting plate and the first surface of the base substrate, wherein the first supporting plate is arranged in the first region and includes a first adhesive film and a first supporting film, the first adhesive film is arranged on the first surface of the base substrate, the first supporting film is arranged on the first adhesive film, the second supporting plate is arranged in the second region and includes a second adhesive film and a second supporting film, the second adhesive film is arranged on the first surface of the base substrate, the second supporting film is arranged on the second adhesive film, the first coating film pattern includes a first side facing the bending region and a second side opposite to the first side, and the first surface and the second side of the first coating film pattern are covered by the first adhesive film.

[0025] In exemplary embodiments, the first side of the first coating film pattern may be exposed from the first adhesive film.

[0026] In exemplary embodiments, the first side of the coating film pattern may be aligned with a side of the first adhesive film facing the bending region in the thickness direction.

[0027] In exemplary embodiments, the first side of the coating film pattern may be aligned with a boundary between the bending region and the first region.

[0028] In exemplary embodiments, the first coating film pattern may include at least one of olefin, silicone resin, long-chain alkyl, and fluorine molecules, and the first adhesive film may include a pressure sensitive adhesive (PSA).

[0029] In exemplary embodiments, the display device may include a second coating film pattern disposed between the second support plate and the first surface of the base substrate.

[0030] In exemplary embodiments, the first coating film pattern and the second coating film pattern may include the same material.

[0031] According to the foregoing and other exemplary embodiments of the inventive concept, a display device that can be easily bent and can prevent cracking of a display panel may be provided.

[0032] In addition, a method of manufacturing a display device can be provided, which can allow a supporting film to be easily cut in a bending region and can prevent damage to a base substrate.

[0033] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the inventive concept.

[0035] Figure 1 is a cross-sectional view of a display device in an unbent state according to an exemplary embodiment.

[0036] Figure 2 yes Figure 1 A cross-sectional view of a display panel.

[0037] Figure 3 yes Figure 1 A cross-sectional view of a display device in a bent state.

[0038] Figure 4 is a flowchart illustrating a method of manufacturing a display device according to an exemplary embodiment.

[0039] Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig.9A , Fig. 9B and Fig.10 It is shown Figure 4 A cross-sectional view of the method.

[0040] Fig.11 is a cross-sectional view illustrating a method of manufacturing a display device according to another exemplary embodiment.

[0041] Fig.12 It is possible through Fig.11 A cross-sectional view of an exemplary display device obtained by the method.

[0042] Fig.13 It is possible through Fig.11 A cross-sectional view of another exemplary display device obtained by the method.

[0043] Fig.14 It is possible through Fig.11 A cross-sectional view of another exemplary display device obtained by the method.

[0044] Fig.15 is a flowchart illustrating a method of manufacturing a display device according to another exemplary embodiment.

[0045] Fig.16 is a layout diagram illustrating a method of manufacturing a display device according to another exemplary embodiment.

[0046] Fig.17 , Fig.18 , Fig.19 , Fig. 20 and Fig.21 is along Fig.16 The first direction of the cut shows Fig.16 A cross-sectional view of the method.

[0047] Fig. 22 , Fig.23A , Fig. 23B , Fig.23C , Fig.24 , Fig.25A , Fig.25B , Fig.25C , Fig.25D and Fig.26 It shows that according to Fig.16 A layout diagram or a three-dimensional diagram of the process of the method.

[0048] Fig. 27 and Fig.28 It shows that according to Fig.26 A layout diagram or cross-sectional view of the process. DETAILED DESCRIPTION

[0049] In the following description, for the purpose of illustration, many specific details are set forth to provide a thorough understanding of various exemplary embodiments or embodiments of the present invention. As used herein, "embodiment" and "embodiment" are interchangeable words, which are non-limiting examples of devices or methods using one or more of the inventive concepts disclosed herein. However, it is apparent that various exemplary embodiments can be practiced without these specific details or by one or more equivalent arrangements. In other examples, well-known structures and devices are shown in the form of block diagrams to avoid unnecessarily obscuring various exemplary embodiments. In addition, various exemplary embodiments may be different, but not necessarily exclusive. For example, without departing from the inventive concept, the specific shape, configuration and features of the exemplary embodiment may be used or implemented in another exemplary embodiment.

[0050] Unless otherwise specified, the exemplary embodiments shown should be understood as providing exemplary features of different details of some ways in which the inventive concept can be implemented in practice. Therefore, unless otherwise specified, the features, components, modules, layers, films, panels, regions and / or aspects, etc. (hereinafter individually or collectively referred to as "elements") of various embodiments may be combined, separated, interchanged and / or rearranged in other ways without departing from the inventive concept.

[0051] The use of cross-hatching and / or shading in the drawings is generally used to clarify the boundaries between adjacent elements. Therefore, unless otherwise specified, the presence or absence of cross-hatching or shading does not represent or indicate any preference or requirement for a specific material, material properties, size, ratio, commonality between the elements shown, and / or any other characteristics, attributes, performance, etc. of the elements. In addition, in the drawings, the size and relative size of the elements may be exaggerated for the purpose of clarity and / or description. When the exemplary embodiments can be implemented differently, the specific process sequence can be performed differently from the described sequence. For example, two processes described in succession can be performed substantially simultaneously or in an order opposite to the described order. Moreover, the same reference numerals represent the same elements.

[0052] When an element or layer is referred to as "on" another element or layer, "connected to" or "coupled to" another element or layer, it may be directly on, connected to or coupled to the other element or layer, or there may be an intervening element or layer. However, when an element or layer is referred to as "directly on" another element or layer, "directly connected to" or "directly coupled to" another element or layer, there is no intervening element or layer. For this reason, the term "connection" may refer to a physical connection, electrical connection and / or fluid connection with or without an intervening element. In addition, the D1 axis, the D2 axis and the D3 axis are not limited to the three axes of a rectangular coordinate system (such as, x-axis, y-axis and z-axis), and can be interpreted in a broader sense. For example, the D1 axis, the D2 axis and the D3 axis may be perpendicular to each other, or may represent different directions that are not perpendicular to each other. For the purpose of this disclosure, "at least one of X, Y, and Z" and "at least one selected from the group consisting of X, Y, and Z" may be interpreted as only X, only Y, only Z, or any combination of two or more of X, Y, and Z, such as, for example, XYZ, XYY, YZ, and ZZ. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0053] Although the terms "first", "second", etc. may be used herein to describe various types of elements, these elements should not be limited by these terms. These terms are used to distinguish one element from another element. Therefore, without departing from the teachings of the present disclosure, the first element discussed below may be referred to as the second element.

[0054] For descriptive purposes, spatially relative terms such as "under," "beneath," "below," "lower," "above," "upper," "above," "higher," "side" (e.g., such as "sidewall"), may be used herein and thereby describe the relationship of one element to another element(s) as shown in the accompanying drawings. Spatially relative terms are intended to include different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, elements described as "under" or "beneath" other elements or features will be oriented as "above" the other elements or features. Thus, the exemplary term "under" may include both above and below orientations. Furthermore, the device may be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and therefore, the spatially relative descriptors used herein should be interpreted accordingly.

[0055] The terms used herein are for the purpose of describing specific embodiments, and are not intended to be limited. As used herein, unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" are intended to also include plural forms. In addition, the terms "include", "include", "include" and / or "include" indicate the existence of stated features, integral bodies, steps, operations, elements, components and / or their groups when used in this specification, but do not exclude the existence or addition of one or more other features, integral bodies, steps, operations, elements, components and / or their groups. It should also be noted that, as used herein, the terms "substantially", "about" and other similar terms are used as approximate terms, rather than as terms of degree, and are therefore used to illustrate the inherent deviations in measured values, calculated values ​​and / or provided values ​​that will be recognized by those of ordinary skill in the art.

[0056] Various exemplary embodiments are described herein with reference to cross-sectional views and / or exploded views that are schematic diagrams of idealized exemplary embodiments and / or intermediate structures. Therefore, deviations from the illustrated shapes caused by, for example, manufacturing techniques and / or tolerances are expected. Therefore, the exemplary embodiments disclosed herein should not necessarily be interpreted as limited to the particular shapes shown of the regions, but rather include deviations in shapes caused by, for example, manufacturing. In this manner, the regions shown in the drawings may be schematic in nature, and the shapes of these regions may not reflect the actual shapes of the regions of the device, and are therefore not necessarily intended to be limiting.

[0057] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by a person of ordinary skill in the art to which the present disclosure belongs. Terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense unless explicitly defined as such herein.

[0058] Figure 1 is a cross-sectional view of a display device according to an exemplary embodiment in a state where the display device is not bent, Figure 2 yes Figure 1 A cross-sectional view of a display panel, and Figure 3 yes Figure 1 A cross-sectional view of a display device in its bent state.

[0059] See also Figure 1 , Figure 2 and Figure 3 The display device 1, as a device for displaying dynamic images or still images, can be used not only in mobile electronic devices (such as mobile phones, smart phones, tablet personal computers (PCs), smart watches, watch phones, mobile communication terminals, electronic notebooks, electronic books, portable multimedia players (PMPs), navigation devices or ultra mobile PCs (UMPCs)), but also in a variety of other electronic devices (including but not limited to televisions (TVs), laptops, monitors, billboards or Internet of Things (IoT) devices).

[0060] For example, the display device 1 may be a flexible display device.

[0061] The term "flexible" as used herein includes foldable, bendable and rollable features. Therefore, the term "flexible display device" as used herein includes a foldable display device, a bendable display device and a rollable display device.

[0062] The display device 1 may include a display area DA displaying an image and a non-display area NA disposed at the periphery of the display area DA.

[0063] The display area DA includes a plurality of pixels, and emits light generated by each of the pixels in a display direction. For example, the display direction may be a third direction DR3.

[0064] The non-display area NA may be disposed adjacent to the display area DA in the first direction DR1. A driving circuit or a signal wiring for applying a signal to the display area DA may be disposed in the non-display area NA. The non-display area NA may include a bending area BA.

[0065] The bending area BA may be included in the non-display area NA. The bending area BA may be an area defined by a first boundary BL1 and a second boundary BL2, the first boundary BL1 being adjacent to the display area DA in the first direction DR1, and the second boundary BL2 being spaced apart from the first boundary BL1 in the first direction DR1. Figure 2 As described, the bending area BA may be an area that can be bent with a predetermined curvature radius when the display device 1 is bent in one direction. The curvature radius of the display device 1 may be defined as a radius of a nearly circular shape formed by the bending area BA when the bending area BA is bent.

[0066] The first boundary BL1 of the bending area BA is shown to coincide with the boundary of the display area DA and the non-display area NA, but exemplary embodiments are not limited thereto. That is, the first boundary BL1 of the bending area BA may not coincide with the boundary of the display area DA and the non-display area NA, and the first boundary BL1 of the bending area BA may be spaced apart from the display area DA along the first direction DR1.

[0067] In this case, the first boundary BL1 may be located in the non-display area NA but may not overlap the display area DA.

[0068] The display device 1 may include a display panel 100 disposed across a display area DA and a non-display area NA. The display panel 100 may include a top surface 100a and a bottom surface 100b. The display device 1 may include adhesive films 451 and 452 disposed on the bottom surface 100b of the display panel 100, and supporting films 501 and 502 disposed on the bottom surfaces 451b and 452b of the adhesive films 451 and 452, respectively. Although not specifically shown, a touch panel including a plurality of touch electrodes and a window covering the display panel 100 from the outside of the display panel 100 may be further disposed on the top surface 100a of the display panel 100.

[0069] The display panel 100 may be, for example, an organic light emitting diode (OLED) display panel. In the following description, it is assumed that an OLED display panel is used as the display panel 100, but exemplary embodiments are not limited thereto. That is, various other display panels such as a liquid crystal display (LCD) panel, a quantum dot light emitting diode (QLED) display panel, a micro LED, a field emission display (FED) panel, or an electrophoretic display panel (EPD) may be used as the display panel 100.

[0070] like Figure 2 As shown in , the display panel 100 may include a base substrate 101 , a driving layer 110 , and an OLED layer 120 .

[0071] The base substrate 101 may be disposed across the display area DA and the non-display area NA. The base substrate 101 provides a bottom surface 100b of the display panel 100. The base substrate 101 may be a flexible substrate and may include a thermosetting resin. For example, the base substrate 101 may include polyvinyl ether phthalate, polyethylene naphthalate, polycarbonate, polyarylate, polyetherimide, polyethersulfone, or polyimide. In the case where the base substrate 101 includes a thermosetting resin, the base substrate 101 may have a predetermined ignition temperature T b . Burning Point T b It may vary according to the material of the base substrate 101, but may generally be 400°C to 600°C.

[0072] The driving layer 110 includes elements for providing signals to the OLED layer 120. The driving layer 110 may include a variety of signal lines, such as scan lines (not shown), data lines (not shown), power lines (not shown), and emission lines (not shown). The driving layer 110 may also include a plurality of transistors and capacitors. The transistor may include a switching transistor (not shown) and a driving transistor, and the switching transistor and the driving transistor may be disposed in their respective pixels (not shown).

[0073] The OLED layer 120 may include an OLED. For example, the OLED may be provided as a top emission type OLED and may emit light in a third direction DR3. Each of the OLEDs may include an anode electrode, an organic layer, and a cathode electrode. The cathode electrode may be a common electrode, but exemplary embodiments are not limited thereto.

[0074] Although not specifically shown, the OLED layer 120 may be encapsulated by an encapsulation film. The encapsulation film seals the OLED layer 120 and prevents external air and / or moisture from penetrating into the OLED layer 120. The encapsulation film may be a single-layer or multi-layer inorganic film or a stacked layer in which inorganic films and organic films are alternately stacked.

[0075] Although not specifically shown, a circuit board (not shown) including an integrated circuit (IC) generating a signal for driving the display panel 100 and a wire transmitting the generated signal may be connected to one end of the display panel 100 in the first direction DR1. As will be described later, when the display panel 100 is bent, the circuit board may overlap a portion of the display panel 100 in the thickness direction.

[0076] The supporting film 500 may be disposed on the bottom surface 100 b of the display panel 100 .

[0077] The supporting film 500 may prevent the display panel 100 from being bent by an external force or may reduce the degree to which the display panel 100 is bent by an external force. The supporting film 500 may keep the display panel 100 relatively flat even when an external force is applied.

[0078] The supporting film 500 may include a rigid material or a semi-rigid material. Specifically, the supporting film 500 may be formed of a metal material such as stainless steel (SUS) or aluminum (Al) or a polymer material such as polymethyl methacrylate (PMMA), polycarbonate (PC), polyvinyl alcohol (PVA), acrylonitrile-butadiene-styrene (ABS) or polyethylene terephthalate (PET). For example, the supporting film 500 may be a SUS film having a thickness of 150 μm to 200 μm. In another example, the supporting film 500 may be an Al film having a thickness of 150 μm to 200 μm.

[0079] The supporting film 500 may have a predetermined melting point T m The melting point T of the supporting film 500 is m The melting point T of the supporting film 500 may vary depending on the material of the supporting film 500, but may generally be 200° C. to 300° C. For example, the melting point T of the supporting film 500 may be 200° C. to 300° C. m The ignition point T of the base substrate 101 may be lower than b .

[0080] The supporting film 500 may include a first supporting film 501 and a second supporting film 502 which are separated from each other in the first direction DR1.

[0081] The first supporting film 501 may be disposed in the display area DA so as not to overlap with the bending area BA. The second supporting film 502 may be disposed in the non-display area NA so as not to overlap with the bending area BA. The distance between the first supporting film 501 and the second supporting film 502 in the first direction DR1 may be greater than the width of the bending area BA in the first direction DR1, but the exemplary embodiment is not limited thereto. That is, the first supporting film 501 and the second supporting film 502 may be disposed to be aligned with two boundaries of the bending area BA. In this case, the distance between the first supporting film 501 and the second supporting film 502 in the first direction DR1 may be the same as or less than the width of the bending area BA in the first direction DR1.

[0082] The first supporting film 501 and the second supporting film 502 may have the same thickness, but exemplary embodiments are not limited thereto. The width of the first supporting film 501 in the first direction DR1 may be greater than the width of the second supporting film 502 in the first direction DR1.

[0083] The first supporting film 501 may include a first portion 501a having a relatively flat shape and a second portion 501b disposed adjacent to the first portion 501a in the first direction DR1. The second portion 501b may include a ridge protruding beyond the first portion 501a in the third direction DR3 and thus may protrude beyond the first portion 501a by as much as the first thickness T1.

[0084] Similarly, the second supporting film 502 may include a third portion 502a having a relatively flat shape and a fourth portion 502b disposed adjacent to the third portion 502a in the first direction DR1. The fourth portion 502b may include a ridge protruding beyond the third portion 502a in the third direction DR3, and thus may protrude beyond the third portion 502a by as much as the second thickness T2.

[0085] The ridges of the first supporting film 501 and the ridges of the second supporting film 502 may have asymmetric shapes. For example, the slope of the ridge of the first supporting film 501 on one side adjacent to the bending area BA may be greater than the slope of the other side of the ridge of the first supporting film 501 away from the bending area BA. Similarly, the slope of the ridge of the second supporting film 502 on one side adjacent to the bending area BA may be greater than the slope of the other side of the ridge of the second supporting film 502 away from the bending area BA.

[0086] However, in other exemplary embodiments, each of the first supporting film 501 and the second supporting film 502 may not include any protrusions, and may have a flat shape over the entire surface thereof.

[0087] The inner side 501bS of the first supporting film 501 and the inner side 502bS of the second supporting film 502 may be inclined at a predetermined angle, but exemplary embodiments are not limited thereto. That is, the inner side 501bS of the first supporting film 501 and the inner side 502bS of the second supporting film 502 may have a substantially right angle of inclination.

[0088] Although not specifically shown, a housing (not shown) may be further provided on the bottom surface of the supporting film 500 to support elements provided on the top surfaces 503 and 504 of the supporting film 500. The housing provided on the bottom surface of the supporting film 500 may be coupled to the supporting film 500.

[0089] The adhesive film 450 may be disposed between the display panel 100 and the supporting film 500 , and the supporting film 500 may be attached to the display panel 100 through the adhesive film 450 .

[0090] The adhesive film 450 may have adhesiveness to both the bottom surface 100 b of the display panel 100 and the top surfaces 503 and 504 of the supporting film 500 .

[0091] The adhesive film 450 may be formed of a urethane-based material, an acrylic material, or a silicone-based material. For example, the adhesive film 450 may be a pressure-sensitive adhesive (PSA). The adhesive film 450 may have an elongation of 100% to 1000%, and thus may be easily bendable together with the display device 1.

[0092] The adhesive film 450 may include a first adhesive film 451 and a second adhesive film 452 which are separated from each other in the first direction DR1.

[0093] The first adhesive film 451 may be disposed in the display area DA and may be disposed to be aligned with a first boundary BL1 adjacent to the display area DA. The second adhesive film 452 may be disposed in the non-display area NA and may be disposed to be aligned with the second boundary BL2. The distance between the first adhesive film 451 and the second adhesive film 452 in the first direction DR1 may be substantially the same as the width of the bending area BA in the first direction DR1, but the exemplary embodiment is not limited thereto. That is, the first adhesive film 451 and the second adhesive film 452 may be disposed in the display area DA and the non-display area NA excluding the bending area BA, respectively, without being aligned with both boundaries of the bending area BA. In this case, the distance between the first adhesive film 451 and the second adhesive film 452 in the first direction DR1 may be greater than the width of the bending area BA in the first direction DR1.

[0094] The first adhesive film 451 and the second adhesive film 452 may have the same thickness, but exemplary embodiments are not limited thereto.

[0095] like Figure 3 As shown in , the display device 1 may be bent downward in a direction opposite to the display direction (i.e., in a direction toward the bottom surface of the display device 1 when the display device 1 is of a top emission type), for example, in a direction opposite to the third direction DR3. Since at least a portion of the non-display area NA may be bent in a direction opposite to the display direction, the frame of the display device 1 can be reduced.

[0096] When the display device 1 is Figure 3 When bent as shown, the display device 1 may include a main area MA and a sub-area SA, both of which are arranged adjacent to the bending area BA. The main area MA may be arranged on at least one side of the bending area BA. The main area MA may be flat. The display area DA may be arranged in the main area MA.

[0097] The sub-region SA may be parallel to the main region MA. The sub-region SA may overlap the main region MA in a thickness direction. The sub-region SA may be the non-display region NA, but exemplary embodiments are not limited thereto.

[0098] When the display device 1 is bent in one direction, bending stress may be induced. The bending stress may be affected by any residual film on the bottom surface 100b of the display panel 100 in the bending area BA. Specifically, if a residual film (e.g., a residual portion of the supporting film 500) remains on the bottom surface 100b of the display panel 100 in the bending area BA, the thickness of the display device 1 may be undesirably increased in the bending area BA, and therefore, a large bending stress may be generated when the display device 1 is bent. In this case, the display panel 100 may crack and the signal wiring may be disconnected.

[0099] However, since no elements exist on the bottom surface 100 b of the display panel 100 in the bending area BA, stress generated when the display device 1 is bent may be minimized, and thus, cracking of the display panel 100 may be prevented.

[0100] Hereinafter, a method of manufacturing a display device according to an exemplary embodiment of the present disclosure will be described.

[0101] exist Figures 1 to 10 1 and 2. In the present invention, the same reference numerals refer to the same elements, and thus, descriptions of the same elements will be omitted or simplified.

[0102] Figure 4 is a flowchart illustrating a method of manufacturing a display device according to an exemplary embodiment of the present disclosure, and Figures 5 to 10 It is shown Figure 4 A cross-sectional view of the method.

[0103] See also Figure 2 and Figures 4 to 6 , an anti-adhesion film 400 is coated on the bending area BA of the display panel 100 ( S125 ).

[0104] As described above, the display panel 100 may include the base substrate 101, the driving layer 110, and the OLED layer 120. The anti-adhesion film 400 may prevent the adhesive film 450 and the base substrate 101 from being adhered to each other.

[0105] In step S125, the release film 400 may be coated on the base substrate 101 of the display panel 100. The release film 400 may be coated by one of extrusion coating, dip coating, gravure coating, spin coating, roll coating, rod coating, spray coating, and flow coating.

[0106] Prior to step S125, the anti-adhesion film 400 may be subjected to a surface treatment process to improve its releasability from the interface it contacts. The surface treatment process is not particularly limited, but may include olefin treatment, silicone treatment, long-chain alkyl treatment, and fluorine treatment. As a result of the surface treatment process, the two surfaces of the anti-adhesion film 400 that contact the bottom surface 100b of the adhesive film 450 and the display panel 100 may include olefins, silicones, long-chain alkyls, or fluorine molecules, and the adhesion of the anti-adhesion film 400 to the adhesive film 450 and the display panel 100 may be weakened. A surface treatment substantially the same as or similar to the anti-fingerprint treatment may be further used.

[0107] After step S125, the release film 400 may be coupled to the display panel 100 and the adhesive film 450 with a predetermined adhesive force. For example, the release film 400 may be coupled to the display panel 100 and the adhesive film 450 throughout the entire interface thereof with the display panel 100 and the adhesive film 450, but exemplary embodiments are not limited thereto. That is, the release film 400 may be coupled to the display panel 100 and the adhesive film 450 only through a portion of the interface thereof with the display panel 100 and the adhesive film 450. The release film 400 may be coupled to the base substrate 101 of the display panel 100 and the adhesive film 450 with different adhesive forces.

[0108] See also Figure 2 , Figure 4 , Figure 7 and Figure 8 , the supporting film 500 is attached to the display panel 100 and the release film 400 through the adhesive film 450 ( S130 ).

[0109] As described above, the supporting film 500 may include a flexible material. The supporting film 500 may be attached throughout the entire display area DA and the entire non-display area NA of the display panel 100 .

[0110] Before step S130, the supporting film 500 may be in a state of being attached to the adhesive film 450. The supporting film 500 attached to the adhesive film 450 may be attached to the base substrate 101 of the display panel 100 through the adhesive film 450.

[0111] The supporting film 500 and the adhesive film 450 may be attached using a roller so that the adhesive film 450 may be in contact with the base substrate 101 of the display panel 100 .

[0112] The supporting film 500 and the adhesive film 450 may include an overlapping region and a non-overlapping region, in which the supporting film 500 and the adhesive film 450 overlap with the anti-adhesion film 400 in the thickness direction, and in which the supporting film 500 and the adhesive film 450 do not overlap with the anti-adhesion film 400 in the thickness direction. In the overlapping region, the display panel 100, the anti-adhesion film 400, the supporting film 500 and the adhesive film 450 may overlap with each other in the thickness direction. In the non-overlapping region, the display panel 100, the supporting film 500 and the adhesive film 450 may overlap with each other in the thickness direction.

[0113] In a region where the release film 400 is not provided, the supporting film 500 may be attached to the base substrate 101 of the display panel 100 through the adhesive film 450 .

[0114] Adhesion between the adhesive film 450 and the base substrate 101 may be stronger than adhesion between the release film 400 and the base substrate 101 .

[0115] In the region where the release film 400 is provided, the release film 400 may be coupled to each of the base substrate 101 and the adhesive film 450 with a predetermined adhesive force. As will be described below, Figure 4 The method does not require an additional process for relieving adhesion between the supporting film 500 and the base substrate 101 to remove a portion of the supporting film 500 corresponding to the bending area BA. Therefore, the adhesion force of the adhesive film 450 disposed on the entire surface of the base substrate 101 to each of the supporting film 500 and the anti-adhesion film 400 can be uniformly maintained.

[0116] However, in the region where the release film 400 is provided, the release film 400 may have different adhesive forces to the base substrate 101 and the adhesive film 450. Specifically, the adhesive force of the release film 400 to the adhesive film 450 may be greater than the adhesive force of the release film 400 to the base substrate 101. Therefore, the release film 400 may be removed after the scribing process by being coupled to the adhesive film 450. This will be described in detail below.

[0117] See also Figure 2 , Figure 4 , Fig.9A and Fig. 9B , the supporting film 500 and the adhesive film 450 are scored along the boundaries (the first boundary BL1 and the second boundary BL2) of the bending area BA using a cutting member (S135).

[0118] In step S135, the cutting member may be as follows: Fig.9A. The hot knife 601 shown in FIG. The hot knife 601 may include at least one cutting portion 601a for cutting the supporting film 500 and the adhesive film 450 and a supporting portion 601b for supporting the cutting portion 601a. ​​The hot knife 601 is shown as including two cutting portions 601a provided on a single supporting portion 601b, but exemplary embodiments are not limited thereto. That is, the hot knife 601 may include one or three or more cutting portions 601a.

[0119] In some exemplary embodiments, the cutting member may be Fig. 9B . The laser member 602 may include a light source 602a that emits light and a lens 602b that refracts the laser emitted by the light source 602a. The laser emitted by the light source 602a may be within the range of ultraviolet (UV) wavelengths, but exemplary embodiments are not limited thereto. The laser member 602 may include a point laser. For example, the laser member 602 may refract the laser emitted by the light source 602a through the lens 602b, and the refracted laser may be applied to the boundaries (the first boundary BL1 and the second boundary BL2) of the bending area BA. In the case of using a point laser, since the area irradiated with the laser is narrower than the area cut by the hot knife 601, the area and / or thickness of the raised portions of the first supporting film 501 and the second supporting film 502 may become smaller.

[0120] In step S135, the cutting member may perform scribing along both the first boundary BL1 and the second boundary BL2 at the same time. The cutting width W of the cutting member corresponding to the distance between the first boundary BL1 and the second boundary BL2 may be substantially the same as the width of the bending area BA. In this way, the supporting film 500 and the adhesive film 450 may be scribed along the boundaries (the first boundary BL1 and the second boundary BL2) of the bending area BA at the same time. In the case where the cutting member scribing along the first boundary BL1 and the second boundary BL2 at the same time, the scribing error may be reduced, and the processing time may also be reduced.

[0121] Optionally, in step S135, the cutting member may perform scoring along the first boundary BL1 and the second boundary BL2 at intervals of a predetermined amount of time. For example, the cutting member may perform scoring along the first boundary BL1 and then along the second boundary BL2. In another example, the cutting member may perform scoring along the second boundary BL2 and then along the first boundary BL1.

[0122] In step S135 , by controlling the scribing strength and duration of the cutting member, scribing may be performed only on the supporting film 500 and the adhesive film 450 .

[0123] See also Figure 2 , Figure 4 and Fig.10, portions of the supporting film 500 and the adhesive film 450 corresponding to the bending area BA are removed ( S140 ).

[0124] After step S140, the portions of the supporting film 500 and the adhesive film 450 corresponding to the first boundary BL1 and the second boundary BL2 and the release film 400 may be removed. As described above, in the region where the release film 400 is not provided, the base substrate 101 of the display panel 100, the adhesive film 450, and the supporting film 500 overlap each other in the thickness direction, and the base substrate 101 and the supporting film 500 are attached to each other through the adhesive film 450.

[0125] On the other hand, in the region where the release adhesive film 400 is provided, the base substrate 101 of the display panel 100 , the release adhesive film 400 , the adhesive film 450 , and the supporting film 500 overlap with each other in the thickness direction.

[0126] As described above, the adhesion force of the release film 400 to the adhesive film 450 may be greater than the adhesion force of the release film 400 to the base substrate 101. Therefore, when the support film 500 is cut in the bending area BA after the scribing process, the release film 400 may be separated from the base substrate 101 while being attached to the adhesive film 450, and thus, the cutting of the support film 500 in the bending area BA may be facilitated. Accordingly, an additional process for removing any residual adhesive component from above the base substrate 101 is unnecessary, which is efficient in terms of processing time and cost.

[0127] In addition, the display panel 100 including the base substrate 101 may be physically damaged in the process of removing any residual adhesive component from above the base substrate 101. However, as described above, since the anti-adhesion film 400 is disposed between the base substrate 101 and the adhesive film 450, such damage to the display panel 100 can be effectively prevented.

[0128] Other exemplary embodiments of the present disclosure will be described below. Figures 1 to 14 1 and 2. In the present invention, the same reference numerals refer to the same elements, and thus, descriptions of the same elements will be omitted or simplified.

[0129] Fig.11 is a cross-sectional view illustrating a method of manufacturing a display device according to another exemplary embodiment of the present disclosure, and Figure 12 to Figure 14 is a cross-sectional view of a display device according to another exemplary embodiment of the present disclosure. Specifically, Figure 12 to Figure 14 It is possible through Fig.11 A cross-sectional view of an exemplary display device obtained by the method.

[0130] See also Fig.11 , Fig.12 , Fig.13 and Fig.14 The display device 2 is different from the display device 1 in that the anti-adhesion film 400_1 is configured to extend outward beyond both the first boundary BL1 and the second boundary BL2, the cutting width W_1 of the cutting member 600_1 is increased, and the scoring range of the cutting member 600_1 includes the first boundary BL1 and the second boundary BL2 and also includes a portion on the outer side of the first boundary BL1 and the second boundary BL2.

[0131] Specifically, the release film 400_1 may be provided to extend outward beyond the first boundary BL1 and the second boundary BL2. The release film 400_1 may include a first release film 401, a second release film 402, and a third release film 403. The second release film 402 may have a first width D1 in the first direction DR1 outside the first boundary BL1. The third release film 403 may have a second width D2 in the first direction DR1 outside the second boundary BL2.

[0132] The first width D1 and the second width D2 may be the same, but exemplary embodiments are not limited thereto. That is, the first width D1 and the second width D2 may not be the same, and the first width D1 may be greater than or less than the second width D2.

[0133] The cutting member 600_1 may perform scribing along the first boundary BL1 and the second boundary BL2 and / or on the outer sides of the first boundary BL1 and the second boundary BL2. For example, the cutting member 600_1 may perform scribing between the first boundary BL1 and the outer side 402S1 of the second release film 402 in the first direction DR1 and between the second boundary BL2 and the outer side 403S1 of the third release film 403 in the first direction DR1.

[0134] Fig.12 is a cross-sectional view of the display device 2 obtained by performing scribing between the first boundary BL1 and the outer side 402_1S1 of the second release film 402 and between the second boundary BL2 and the outer side 403_1S1 of the third release film 403 and then performing cutting. Fig.12 , parts of the second release film 402 and the third release film 403 , that is, the fourth release film 402_1 and the fifth release film 403_1 may remain.

[0135] Specifically, the fourth release film 402_1 and the fifth release film 403_1 may include the same material. The fourth release film 402_1 may include a first surface 402-1a adhered to the base substrate 101, a second surface 402-1b opposite to the first surface 402-1a and covered by the first adhesive film 451, an outer side 402_1S1 covered by the first adhesive film 451, and an inner side 402_1S2 opposite to the outer side 402_1S1 and facing the bending area BA. Similarly, the fifth release film 403_1 may include a first surface 403-1a adhered to the base substrate 101, a second surface 403-1b opposite to the first surface 403-1a and covered by the second adhesive film 452, an outer side 403_1S1 covered by the second adhesive film 452, and an inner side 403_1S2 opposite to the outer side 403_1S1 and facing the bending area BA.

[0136] For example, the width D5 of the fourth release film 402_1 and the width D6 of the fifth release film 403_1 may be the same, but exemplary embodiments are not limited thereto. That is, the width D5 and the width D6 may be different, and the width D5 may be greater than or less than the width D6.

[0137] The inner side 402_1S2 of the fourth release film 402_1 and the inner side 403_1S2 of the fifth release film 403_1 may be inclined at a predetermined angle, but exemplary embodiments are not limited thereto. The inner side 402_1S2 of the fourth release film 402_1 and the inner side 403_1S2 of the fifth release film 403_1 may have an inclined angle of substantially right angle.

[0138] The inner side 402_1S2 of the fourth release film 402_1 and the inner side 403_1S2 of the fifth release film 403_1 may be aligned with the inner side 451S of the first adhesive film 451 and the inner side 452S of the second adhesive film 452, respectively. Also, the inner side 402_1S2 of the fourth release film 402_1 and the inner side 403_1S2 of the fifth release film 403_1 may be aligned with the inner side 501bS of the first supporting film 501 and the inner side 502bS of the second supporting film 502, respectively.

[0139] Fig.13 is a cross-sectional view of the display device 2 obtained by performing scribing along the first boundary BL1 and along the outer side of the third release film 403 in the first direction DR1 and then performing cutting. Fig.13 , a portion of the second release film 402 , ie, the sixth release film 402_2 may be retained.

[0140] The width of the sixth release film 402_2 in the first direction DR1 may be the same as the first width D1.

[0141] The sixth release film 402_2 may include a first surface 402-2a attached to the base substrate 101, a second surface 402-2b opposite to the first surface 402-2a and covered by the first adhesive film 451, an outer side 402_2S1 covered by the first adhesive film 451, and an inner side 402_2S2 opposite to the outer side 402_2S1 and facing the bending area BA. The inner side 402_2S2 of the sixth release film 402_2 may be inclined at a predetermined angle, but exemplary embodiments are not limited thereto. That is, the inner side 402_2S2 of the sixth release film 402_2 may have an inclination angle that is substantially a right angle. In addition, the inner side 402_2S2 of the sixth release film 402_2 may be aligned with the first boundary BL1 of the bending area BA.

[0142] Fig.14 is a cross-sectional view of the display device 2 obtained by performing scribing along the second boundary BL2 and along the outer side of the second release film 402 in the first direction DR1 and then performing cutting. Fig.14 , a portion of the third release film 403 , ie, the seventh release film 403_2 may remain.

[0143] The width of the seventh release film 403_2 in the first direction DR1 may be the same as the second width D2.

[0144] The seventh release film 403_2 may include a first surface 403-2a attached to the base substrate 101, a second surface 403-2b opposite to the first surface 403-2a and covered by the second adhesive film 452, an outer side 403_2S1 covered by the second adhesive film 452, and an inner side 403_2S2 opposite to the outer side 403_2S1 and facing the bending area BA. The inner side 403_2S2 of the seventh release film 403_2 may be inclined at a predetermined angle, but exemplary embodiments are not limited thereto. That is, the inner side 403_2S2 of the seventh release film 403_2 may have an inclination angle that is substantially a right angle. In addition, the inner side 403_2S2 of the seventh release film 403_2 may be aligned with the second boundary BL2 of the bending area BA.

[0145] In the case where scribing is performed on the supporting film 500 using the cutting member 600_1 , the supporting film 500 may not be completely removed from the bending area BA due to an alignment error of the cutting member 600_1 .

[0146] However, if the anti-adhesion film 400_1 is provided on both sides of the bending area BA and the width of the cutting member 600_1 is increased, the scribing range of the cutting member 600_1 may be widened. Specifically, the scribing range of the cutting member 600_1 may include a portion between the first boundary BL1 and the outer side of the second anti-adhesion film 402 in the first direction DR1 and a portion between the second boundary BL2 and the outer side of the third anti-adhesion film 403 in the first direction DR1. Since the scribing range of the cutting member 600_1 may be widened, defects that may be caused by a scribing error of the cutting member 600_1 may be prevented.

[0147] When the supporting film 500 is cut in the bending area BA after the scribing process, since the anti-adhesion film 400_1 is attached to the adhesive film 450 and separated from the base substrate 101, it is easy to cut the supporting film 500. Therefore, an additional process for removing any residual adhesive component from above the base substrate 101 is unnecessary, which is efficient in terms of processing time and cost.

[0148] Furthermore, the display panel 100 including the base substrate 101 may be physically damaged in the process of removing any residual adhesive component from above the base substrate 101. However, since the anti-adhesion film 400_1 is disposed between the base substrate 101 and the adhesive film 450, such damage to the display panel 100 can be effectively prevented.

[0149] Fig.15 is a flowchart illustrating a method of manufacturing a display device according to another exemplary embodiment of the present disclosure. Fig.16 is a layout diagram illustrating a method of manufacturing a display device according to another exemplary embodiment of the present disclosure. Figures 17 to 21 is along Fig.16 The first direction of the cut shows Fig.16 A cross-sectional view of the method. Figure 22 to Figure 26 It shows that according to Fig.16 A layout diagram or a three-dimensional diagram of the process of the method. Fig. 27 and Fig.28 It shows that according to Fig.26 A layout diagram or cross-sectional view of the process.

[0150] Specifically, Figures 15 to 28 An exemplary method for manufacturing a display device based on a mother substrate is shown. Figures 4 to 10 and Figures 15 to 28 In the present invention, the same reference numerals refer to the same elements, and therefore, the description of the same elements will be omitted or simplified. Figures 15 to 20 The method focuses on Figures 4 to 10 The methods are different.

[0151] See also Fig.15 , Fig.16 and Fig.17 , a sacrificial layer SL is formed on a lower mother substrate SUB_M on which a plurality of cells CE are defined ( S100 ).

[0152] The lower mother substrate SUB_M may be used to manufacture a plurality of display devices at the same time, and may support a plurality of display devices stacked thereon. Cells CE may be defined on the lower mother substrate SUB_M. Each of the cells CE may correspond to a display device 1. Fig.16 Only nine units CE are shown, but the number of units CE is not particularly limited.

[0153] Each of the cells CE may include a display area DA and a non-display area NA disposed on the periphery of the display area DA, and the non-display area NA may include a bending area BA that may be bent.

[0154] The cells CE may be disposed continuously. That is, the bending areas BA of each pair of adjacent cells CE in one direction may be disposed adjacent to each other.

[0155] The lower mother substrate SUB_M may be a rigid substrate. For example, the lower mother substrate SUB_M may include glass or quartz, but exemplary embodiments are not limited thereto.

[0156] The sacrificial layer SL may be disposed on the entire surface of the lower mother substrate SUB_M. The sacrificial layer SL may protect the display panel 100 to be disposed thereon.

[0157] The sacrificial layer SL is shown in a plan view as having a smaller area than the lower mother substrate SUB_M, but exemplary embodiments are not limited thereto. That is, the sacrificial layer SL may have substantially the same area as the lower mother substrate SUB_M. The sacrificial layer SL may be coupled to the base substrate 101 to be described below. The sacrificial layer SL may be coupled to the base substrate 101 by an adhesive film (not shown) disposed between the sacrificial layer SL and the base substrate 101. The adhesive film may include a material whose adhesiveness weakens in response to a laser applied thereto during a stripping process to be described below. For example, the adhesive film may include a UV-curable adhesive material. Alternatively, the sacrificial layer SL may be coupled to the base substrate 101 without the aid of an adhesive film.

[0158] The sacrificial layer SL may have a structure in which silicon nitride (SiN X ) layer and silicon oxide (SiO X ) layer, but exemplary embodiments are not limited thereto.

[0159] See also Figure 2 , Fig.15 and Fig.18 , a display panel 100 is formed on the sacrificial layer SL (S105). Figure 2 As shown in , the base substrate 101 of the display panel 100 may be disposed on the sacrificial layer SL.

[0160] See also Figure 2 , Fig.15 and Fig.19 , a temporary protective film 200 is disposed on the display panel 100 corresponding to the lower mother substrate SUB_M (S110). The temporary protective film 200 may protect the display panel 100 during the manufacture of each display device. As will be described below, the temporary protective film 200 may be removed by a peeling process after each of the cutting units CE.

[0161] The temporary protective film 200 may be a flexible film. For example, the temporary protective film 200 may be formed of PET, but the exemplary embodiment is not limited thereto. The temporary protective film 200 may be attached to the display panel 100 by an adhesive film (not shown).

[0162] See also Figure 2 , Fig.15 and Fig. 20 , laser LS is applied to the lower mother substrate SUB_M (S115).

[0163] The laser LS may be applied to the first surface of the lower mother substrate SUB_M in the third direction DR3, that is, the surface opposite to the surface of the lower mother substrate SUB_M on which the sacrificial layer SL is provided. The laser LS may be a UV laser having a UV wavelength. In response to the laser LS being applied to the entire first surface of the lower mother substrate SUB_M, the adhesion between the sacrificial layer SL and the base substrate 101 may be weakened.

[0164] See also Figure 2 , Fig.15 , Fig.21 and Fig. 22 , remove the lower mother substrate SUB_M ( S120 ).

[0165] As described above, if the laser LS is applied to the entire first surface of the lower mother substrate SUB_M, adhesion between the sacrificial layer SL and the base substrate 101 may be weakened, and the display panel 100 including the base substrate 101 may be separated from the sacrificial layer SL and the lower mother substrate SUB_M.

[0166] In step S120, the lower mother substrate SUB_M may be separated from the display panel 100 by, for example, attaching and fixing an attachment stage (not shown) to the first surface of the temporary protective film 200 in the third direction DR3 and moving the attachment stage upward in the third direction DR3, but exemplary embodiments are not limited thereto. That is, the lower mother substrate SUB_M may be separated from the display panel 100 using a method other than the attachment stage.

[0167] See also Fig. 22 , the temporary protective film 200 may support an upper stack structure including the display panel 100 during the manufacture of each display device.

[0168] See also Figure 2 , Figure 6 , Fig.15 , Fig.23A , Fig. 23B and Fig.23C , an anti-adhesion film 400 is coated on the bending area BA of the cell CE ( S125 ).

[0169] In step S125, the anti-adhesion film 400 may be coated on the base substrate 101 including the cell CE using the coating device 800. The coating device 800 may continuously coat the anti-adhesion film 400 in one direction across the entire surface of the base substrate 101. As described above, since the bending areas BA of each pair of adjacent cells CE in the second direction DR2 are disposed adjacent to each other in the second direction DR2, the coating device 800 may continuously coat the anti-adhesion film 400 along each of the bending areas BA of the cell CE without interruption.

[0170] The anti-adhesion film 400 may be coated on the base substrate 101 including the unit CE along the first boundary BL1 and the second boundary BL2 of each of the bending areas BA. The anti-adhesion film 400 is shown as extending outward beyond the first boundary BL1 and the second boundary BL2 of each of the bending areas BA, but exemplary embodiments are not limited thereto. The anti-adhesion film 400 may be coated to be substantially aligned with the first boundary BL1 and the second boundary BL2 of each of the bending areas BA.

[0171] For example, Fig.23A As shown in , the coating device 800 may coat the anti-adhesion film 400 on the bending area BA of each array in the cell CE along the second direction DR2. Specifically, the coating device 800 may coat the anti-adhesion film 400 on the bending area BA of the array of cells CE adjacent to the first end of the base substrate 101 in the first direction DR1 along the second direction DR2, and after a predetermined amount of time, the coating device 800 may coat the anti-adhesion film 400 on the bending area BA of the array of cells CE adjacent to the array of cells CE (adjacent to the first end of the base substrate 101) in the first direction DR1 along the second direction DR2. In this case, the anti-adhesion film 400 may be coated in parallel directions.

[0172] Fig. 23B Examples with Fig.23AThe example of FIG. 8 is different in that the coating device 800 can coat the anti-adhesion film 400 on the curved area BA of each array of the cells CE while changing its direction from one array to another array of the cells CE. Specifically, the coating device 800 can coat the anti-adhesion film 400 in a zigzag manner by coating the anti-adhesion film 400 on the curved area BA of one array of the cells CE along the second direction DR2 and then coating the anti-adhesion film 400 on the curved area BA of another array of the cells CE in a direction opposite to the second direction DR2.

[0173] Fig.23C Examples with Fig.23A and Fig. 23B The example of FIG. 8 is different in that the second coating device 800_1 may include a plurality of coating devices 800. Specifically, the second coating device 800_1 may include a plurality of coating devices 800, and may simultaneously coat the anti-adhesion film 400 on the bending areas BA of different arrays of the unit CE.

[0174] See also Figure 2 , Figure 7 , Figure 8 , Fig.15 and Fig.24 , the supporting film 500 is attached to the display panel 100 and the release film 400 through the adhesive film 450 ( S130 ).

[0175] The adhesive film 450 and the supporting film 500 may have the same area as the temporary protective film 200 in a plan view, but exemplary embodiments are not limited thereto. That is, the adhesive film 450 and the supporting film 500 may have a smaller area than the temporary protective film 200 in a plan view.

[0176] See also Figure 2 , Fig.9A and Fig. 9B , Fig.15 , Fig.25A , Fig.25B , Fig.25C and Fig.25D The supporting film 500 and the adhesive film 450 are scored along the boundaries (the first boundary BL1 and the second boundary BL2) of each of the bending areas BA using a cutting member (S135), and portions of the supporting film 500 and the adhesive film 450 corresponding to the bending areas BA are removed (S140).

[0177] The cutting member may score the supporting film 500 and the adhesive film 450 disposed on the entire surface of the temporary protective film 200. The cutting member may score the supporting film 500 and the adhesive film 450 while moving in the second direction DR2.

[0178] like Fig.25AAs shown in FIG. 1 , in step S135, the support film 500 and the adhesive film 450 may be scribed using a hot knife 601. As described above, since the bending areas BA of each pair of adjacent cells CE are disposed adjacent to each other, the hot knife 601 may continuously perform scribing in one direction without interruption. For example, the hot knife 601 may perform scribing in the second direction DR2.

[0179] Fig.25B Examples with Fig.25A The example is different in that a plurality of hot knives 601 are used in step S135.

[0180] Fig.25B An example in which scribing is performed using three hot knives 601 is shown, but exemplary embodiments are not limited thereto.

[0181] like Fig.25C As shown in FIG. 5 , in step S135, the support film 500 and the adhesive film 450 may be scribed using the laser member 602. As described above, since the bending areas BA of each pair of adjacent cells CE are disposed adjacent to each other, the laser member 602 may continuously perform the scribe in one direction without interruption. For example, the laser member 602 may perform the scribe in the second direction DR2.

[0182] Fig.25D Examples with Fig.25C The example is different in that a plurality of laser members 602 are used in step S135.

[0183] Fig.25D An example in which scribing is performed using three laser members 602 is shown, but exemplary embodiments are not limited thereto.

[0184] As a result of step S140 , portions of the supporting film 500 and the adhesive film 450 on the inner side of each scored portion are removed.

[0185] In step S140 , if the release film 400 extends outward beyond at least one of the boundaries (the first boundary BL1 and the second boundary BL2 ) of each of the bending areas BA, part of the release film 400 may remain.

[0186] See also Figure 2 , Fig.15 , Fig.26 and Fig. 27 , laser LS is applied to the boundary between the cells CE (S145).

[0187] The laser LS may be applied to the boundary between the cells CE while moving from above the temporary protective film 200 along the boundary between the cells CE. Fig.26As shown in FIG. 1 , the laser LS may be applied to the boundary between the cells CE while moving in the first direction DR1 and the second direction DR2. Fig. 27 As shown in , as a result of step S145 , each of the cells CE may be separated.

[0188] refer to Figure 2 , Fig.15 and Fig.28 , the temporary protective film 200 is removed (S150).

[0189] Some of the advantages that can be achieved by the exemplary embodiments / implementations of the present invention and / or the exemplary methods of the present invention include providing a display device that can be easily bent and can prevent cracking of the display panel, and a method of manufacturing a display device that allows a supporting film to be easily cut in a bending area and can prevent damage to the base substrate.

[0190] Although certain exemplary embodiments and examples have been described herein, other embodiments and modifications will be apparent from this specification. Therefore, the inventive concept is not limited to these embodiments, but to the broader scope of the appended claims and to various obvious modifications and equivalent arrangements that will be apparent to those of ordinary skill in the art.

Claims

1. A method for manufacturing a display device, include: Prepare a display panel, the display panel comprising a base substrate, a driving layer and a light-emitting element layer, the base substrate comprising a first region, a second region and a curved region arranged between the first region and the second region, the driving layer being on the second surface of the base substrate, and the light-emitting element layer being on the driving layer; forming a coating film pattern corresponding to the curved area on a first surface of the base substrate opposite to the second surface; disposing a support plate on the first surface of the base substrate to cover the coating film pattern, the support plate comprising an adhesive film and a support film; as well as separating the support plate and the coating film pattern overlapping each other in the thickness direction from the base substrate, Wherein, disposing the support plate includes disposing the support plate so that the adhesive film contacts the coating film pattern and the first surface of the base substrate.

2. The method according to claim 1, in, Separating the support plate and the coating film pattern includes scribing the support plate.

3. The method according to claim 2, in, Scoring the support plate includes scoring the support plate along a first boundary between the first region and the curved region and along a second boundary between the second region and the curved region.

4. The method according to claim 3, in, Scoring the support plate further comprises scoring the support plate along the first boundary and the second boundary simultaneously.

5. The method according to claim 3, in, Scoring the support plate includes dividing the support plate into a first support plate located in the first region and a second support plate located in the second region.

6. The method according to claim 5, in, Scoring the support plate may include using a laser component or a hot knife.

7. The method according to claim 6, in, Each of the first support plate and the second support plate includes a ridge-like portion proximate the bending region.

8. The method according to claim 2, in, Separating the support plate and the coating film pattern includes separating both the scored support plate in the curved region and the coating film pattern coupled with the adhesive film of the scored support plate in the curved region.

9. The method according to claim 1, in, Providing the support plate includes coupling the adhesive film and the coating film pattern together.

10. The method according to claim 9, in, A first adhesive force between the adhesive film and the coating film pattern is greater than a second adhesive force between the base substrate and the coating film pattern.

11. The method according to claim 10, in, A third adhesive force between the adhesive film and the first surface of the base substrate is greater than the second adhesive force.

12. The method according to claim 10, in: The first adhesive force is the same when both the support plate and the coating film pattern are separated and the support plate is set; as well as The second adhesive force is the same both when the support plate and the coating film pattern are separated and when the support plate is set.

13. The method according to claim 1, in: The coating film pattern includes at least one of olefin, silicone resin, long-chain alkyl and fluorine molecules; and The adhesive film includes a pressure-sensitive adhesive.

14. Display device, include: A display panel, the display panel comprising a base substrate, a driving layer and a light emitting element layer, the base substrate comprising a first region, a second region and a curved region arranged between the first region and the second region, the driving layer being on a second surface of the base substrate, and the light emitting element layer being on the driving layer; a first support plate and a second support plate, which are disposed on a first surface of the base substrate opposite to the second surface and are separated from each other, and the bending area is disposed between the first support plate and the second support plate; as well as a first coating film pattern disposed between the first support plate and the first surface of the base substrate; in: The first support plate is disposed in the first region and includes a first adhesive film and a first supporting film, the first adhesive film being disposed on the first surface of the base substrate, the first supporting film being disposed on the first adhesive film; the second support plate is disposed in the second region and includes a second adhesive film and a second support film, the second adhesive film being disposed on the first surface of the base substrate, the second support film being disposed on the second adhesive film; The first coating film pattern includes a first side facing the bending area and a second side opposite to the first side; and The first surface and the second side of the first coating film pattern are covered by the first adhesive film.

15. The display device according to claim 14, in, The first side of the first coating film pattern is exposed from the first adhesive film.

16. The display device according to claim 15, in, The first side of the coating film pattern is aligned with a side of the first adhesive film facing the bending area in a thickness direction.

17. The display device according to claim 16, in, The first side of the coating film pattern is aligned with a boundary between the bending region and the first region.

18. The display device according to claim 14, in: The first coating film pattern includes at least one of olefin, silicone resin, long-chain alkyl and fluorine molecules; and The first adhesive film includes a pressure-sensitive adhesive.

19. The display device according to claim 14, further comprising: include: A second coating film pattern is disposed between the second supporting plate and the first surface of the base substrate.

20. The display device according to claim 19, in, The first coating film pattern and the second coating film pattern include the same material.

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