Display device and method for manufacturing a display device

Abstract

A display device and a method for manufacturing the same are provided. The display device includes a display panel including a display area and a non-display area surrounding the display area, a cover panel disposed on a rear surface of the display panel and including a front surface, a first side surface connected to the front surface and bent along a first curved line, a second side surface connected to the front surface and bent along a second curved line intersecting the first curved line, and a first corner between the first side surface and the second side surface, and an alignment notch defined at the first corner of the cover panel.

Description

[0001] This application claims priority to Korean Patent Application No. 10-2020-0065230 filed on May 29, 2020, as well as all derivative applications thereof, the contents of which are incorporated herein in their entirety by reference. TECHNICAL FIELD

[0002] The present disclosure relates to a display device and a method of manufacturing a display device. BACKGROUND

[0003] As multimedia technology develops, display devices are becoming increasingly important. Accordingly, various types of display devices, such as liquid crystal display ("LCD") devices and organic light emitting display ("OLED") devices, are currently used.

[0004] A display device can include a display panel displaying an image and a window attached to the display panel. In order to attach the display panel and the window together, they can be aligned by using alignment marks indicated in both the display panel and the window.

[0005] First, a vision camera recognizes alignment marks formed in both the display panel and the cover panel. Then, the positions of the display panel and the cover panel can be determined based on the positions or shapes of the recognized alignment marks. Then, one of the display panel and the cover panel can be shifted toward the other so that the display panel and the cover panel can be attached together.

[0006] Incidentally, since display devices are adopted by various electronic devices, there is a need for display devices to have various designs. For example, research into display devices that are not only capable of displaying an image on the front but also capable of displaying an image on the side extending from the front is being conducted. SUMMARY

[0007] Aspects of the present disclosure provide a display device that allows identification marks for alignment to be easily recognized during a process of assembling a display panel and a cover panel, and a method for manufacturing a display device.

[0008] It should be noted that the objects of the present disclosure are not limited to the above-mentioned objects, and other objects of the present disclosure will be apparent to those skilled in the art from the following description.

[0009] Embodiments of a display device include a display panel including a display area and a non-display area surrounding the display area, a cover panel disposed on a rear surface of the display panel and including a front surface, a first side surface connected to the front surface and curved along a first curved line, a second side surface connected to the front surface and curved along a second curved line intersecting the first curved line, and a first corner between the first side surface and the second side surface, and an alignment notch defined at the first corner of the cover panel.

[0010] Embodiments of a method of manufacturing a display device include preparing a cover panel including a front surface, a first side surface connected to the front surface and bent along a first bending line, a second side surface connected to the front surface and bent along a second bending line intersecting the first bending line, identifying an alignment notch defined at a corner of the cover panel between the first side surface and the second side surface of the cover panel by a detector, aligning the cover panel, and assembling the cover panel and a display panel.

[0011] According to embodiments of the present disclosure, an identification mark for alignment can be easily identified during a process of assembling a display panel and a cover panel.

[0012] According to another embodiment of the present disclosure, deformation of an alignment mark can be reduced.

[0013] It should be noted that the effects of the present disclosure are not limited to those described above and that other effects of the present disclosure will be apparent to those skilled in the art from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0014] The above and other aspects and features of the present disclosure will become more apparent by describing in detail embodiments thereof with reference to the attached drawings.

[0015] Figure 1 FIG. 1 is a perspective view illustrating a display device according to an embodiment of the present disclosure.

[0016] Figure 2 FIG. 2 is an exploded perspective view of a display device according to an embodiment of the present disclosure.

[0017] Figure 3 FIG. 3 is a cross-sectional view taken along line A-A' of FIG. 1. Figure 1

[0018] Figure 4 FIG. 4 is a plan view of a display panel of a display device according to an embodiment of the present disclosure when unfolded.

[0019] Figure 5 FIG. 5 is a plan view of a substrate of a display panel of a display device according to an embodiment of the present disclosure when unfolded.

[0020] Figure 6 FIG. 6 is a plan view of a cover panel of a display device according to an embodiment of the present disclosure when unfolded.

[0021] Figure 7 FIG. 7 is a cross-sectional view of a cover panel of a display device according to an embodiment of the present disclosure.

[0022] Figure 8 ​is an enlarged plan view of a first corner of a display panel of a display device according to an embodiment of the disclosure before a side surface is bent.

[0023] Figure 9 is an enlarged plan view of a first corner of a display panel of a display device according to an embodiment of the disclosure after a side surface is bent.

[0024] Figure 10 is a cross-sectional view taken along line I-I' of Figure 8 .

[0025] Figure 11 is a plan view of a non-display area of Figure 10 .

[0026] Figure 12 is an enlarged plan view of a first corner of a cover panel of a display device according to an embodiment of the disclosure before a side surface is bent.

[0027] Figure 13 is an enlarged plan view of a first corner of a cover panel of a display device according to an embodiment of the disclosure after a side surface is bent.

[0028] Figure 14 is a cross-sectional view taken along line II-II' of Figure 13 .

[0029] Figure 15 is a cross-sectional view taken along line III-III' of Figure 13 .

[0030] Figure 16 is a perspective view of a cover panel of a display device according to another embodiment of the disclosure.

[0031] Figure 17 is a plan view of a cover panel of a display device according to another embodiment of the disclosure when unfolded.

[0032] Figure 18 is an enlarged plan view of a first corner of a cover panel of a display device according to another embodiment before a side surface is bent.

[0033] Figure 19 is an enlarged plan view of a first corner of a cover panel of a display device according to another embodiment of the disclosure after a side surface is bent.

[0034] Figure 20 is a plan view of a cover panel of a display device according to yet another embodiment of the disclosure when unfolded.

[0035] Figure 21 is a flowchart for illustrating a method for manufacturing a display device according to an embodiment of the disclosure.

[0036] Figure 22 is a view showing a manufacturing process of a display panel and a cover panel.

[0037] Figure 23 is a view showing alignment marks of a display panel and alignment notches of a cover panel.

[0038] Figure 24A and Figure 24B is an enlarged perspective view of part D of Figure 23

[0039] Figure 25 is a view showing attachment of a cover panel to a display panel.

[0040] Figure 26 is a view showing a method for manufacturing a display device according to another embodiment of the present disclosure.

[0041] Figure 27 is an enlarged plan view of part E of Figure 26

[0042] Figure 28 is a view showing a method for manufacturing a display device according to still another embodiment of the present disclosure. DETAILED DESCRIPTION

[0043] ​​In the following description, implementation modes of the present disclosure will be described with reference to the accompanying drawings. It is to be understood that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can be present therebetween. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. It will be understood that, although the terms "first", "second", "third", etc. can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Therefore, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings herein. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms, including "at least one", unless the content clearly indicates otherwise. "At least one" should not be construed as limiting "a" or "an". "Or" means "and / or". As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. It will be understood that the terms "comprise", "comprising", "include", "including", or "comprising" as used in this specification, indicate the presence of stated features, integers, steps, operations, elements, and / or components but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. In addition, relative terms such as "lower" or "bottom" and "upper" or "top" can be used herein to describe one element's relationship to another element as illustrated in the figures. It will be understood that relative terms are intended to encompass different orientations of the device in addition to the orientation depicted in the figures. For example, if the device in one of the figures is turned over, elements described as being on the "lower" side of other elements would then be oriented on the "upper" sides thereof. The exemplary term "lower", can therefore, encompass both an orientation of "lower" and "upper", depending on the particular orientation of the figure. Similarly, if the device in one of the figures is turned over, elements described as "below" or "beneath" other elements would then be oriented "above" such elements. The exemplary term "below" or "beneath" can, therefore, encompass both an orientation of above and below, depending on the particular orientation of the figure.

[0044] Figure 1 is a perspective view showing a display device according to an implementation mode of the present disclosure. Figure 2is an exploded perspective view of a display device according to an embodiment of the disclosure. Figure 3 is a cross-sectional view taken along Figure 1 line A-A' of Figure 4 is a plan view of a display panel of a display device according to an embodiment of the disclosure when unfolded. Figure 5 is a plan view of a substrate of a display panel of a display device according to an embodiment of the disclosure when unfolded. Figure 6 is a plan view of a cover panel of a display device according to an embodiment of the disclosure when unfolded. Figure 7 is a cross-sectional view of a cover panel of a display device according to an embodiment of the disclosure.

[0045] The display device 10 according to an embodiment of the disclosure can be adopted by a portable electronic device such as a mobile phone, a smart phone, a tablet PC, a mobile communication terminal, an electronic notebook, an electronic book, a portable multimedia player ("PMP"), a navigation device, and an ultra-mobile PC ("UMPC"). Alternatively, the display device 10 according to an embodiment of the disclosure can be used as a display unit of a television, a laptop computer, a monitor, an electronic billboard, or an Internet of Things ("IOT") device. Alternatively, the display device 10 according to an embodiment of the disclosure can be applied to a wearable device such as a smart watch, a watch phone, a glasses-type display, and a head-mounted display ("HMD") device. Alternatively, the display device 10 according to an embodiment can be used as a central information display ("CID") disposed at an instrument panel, a center panel, or an instrument cluster of a vehicle, as an interior mirror display representing a side mirror of a vehicle, or as a display of an entertainment system for passengers at a rear seat of a vehicle placed on the back of each of front seats.

[0046] As used herein, a first direction X can indicate a horizontal direction in a plan view. A second direction Y can indicate a vertical direction in the plan view. A third direction Z can indicate a thickness direction (i.e., a direction of the plan view). In Figure 1 , an upper side in the third direction Z can be referred to as a front side, and a lower side in the third direction Z can be referred to as a rear side. Accordingly, one surface of an element facing the front side can be referred to as a front surface, and the other surface of the element facing the rear side can be referred to as a rear surface. However, it is understood that the above-described sides are relative and not limiting.

[0047] Referring to Figures 1-3 , the display device 10 according to an embodiment can include a cover window 100, a display panel 200, and a cover panel 300.

[0048] The cover window 100 is disposed to cover the display panel 200 (to be described later). The cover window 100 is capable of protecting the display panel 200.

[0049] The cover window 100 can include a front surface 110 and side surfaces 120.

[0050] The front surface 110 of the cover window 100 can have, but is not limited to, a substantially rectangular shape having a shorter side extending in a first direction X and a longer side extending in a second direction Y in a plan view. In another embodiment, the front surface 110 of the cover window 100 can have other polygonal shapes, a circular shape, or an elliptical shape when viewed from the top (i.e., in a plan view). The corners of the front surface 110 of the cover window 100 can have a curvature convex toward the outside when viewed from the top. In some embodiments, the corners of the front surface 110 can be curved in the thickness direction.

[0051] The side surfaces 120 of the cover window 100 are arranged at the edges of the front surface 110 of the cover window 100. The side surfaces 120 of the cover window 100 can be arranged to surround at least a portion of the edges of the front surface 110 of the cover window 100. According to embodiments of the present disclosure, the side surfaces 120 of the cover window 100 can be arranged to completely surround the edges of the front surface 110 of the cover window 100.

[0052] The side surfaces 120 of the cover window 100 extend from the edges of the cover window 100 and are curved in the thickness direction (i.e., a third direction Z). According to embodiments of the present disclosure, the angle between the front surface 110 and the side surfaces 120 of the cover window 100 can be in the range of, but is not limited to, from 70 degrees (°) to 120°.

[0053] The side surfaces 120 can include a first side surface 120_1, a second side surface 120_2, a third side surface 120_3, and a fourth side surface 120_4.

[0054] The first side surface 120_1, the second side surface 120_2, the third side surface 120_3, and the fourth side surface 120_4 of the cover window 100 extend from the first edge, the second edge, the third edge, and the fourth edge of the front surface 110 of the cover window 100, respectively, and are curved in the thickness direction.

[0055] The first side surface 120_1, the second side surface 120_2, the third side surface 120_3, and the fourth side surface 120_4 of the cover window 100 can be arranged to completely surround the edges of the front surface 110 of the cover window 100. The outermost edges of the first side surface 120_1, the second side surface 120_2, the third side surface 120_3, and the fourth side surface 120_4 of the cover window 100 can form a boundary of the cover window 100.

[0056] A width of each of the first side surface 120_1, the second side surface 120_2, the third side surface 120_3, and the fourth side surface 120_4 of the cover window 100 can be smaller toward a corner of the front surface 110 of the cover window 100. The width can include a length in the third direction Z. Accordingly, a gap that widens toward a lower side can be formed between the first side surface 120_1 and the second side surface 120_2, between the second side surface 120_2 and the third side surface 120_3, between the third side surface 120_3 and the fourth side surface 120_4, and between the fourth side surface 120_4 and the first side surface 120_1, respectively. An edge of each of the first side surface 120_1, the second side surface 120_2, the third side surface 120_3, and the fourth side surface 120_4 of the cover window 100 can be in contact with a corner of the front surface 110 of the cover window 100.

[0057] For example, the cover window 100 can include or be made of a transparent insulating material such as glass and plastic. The cover window 100 can have flexibility.

[0058] The cover window 100 can include a transparent bonding member such as an optically clear adhesive ("OCA") film.

[0059] Although not shown in the drawings, in some embodiments, the cover window 100 can further include a light-blocking region arranged in a band along an edge of the cover window 100. The light-blocking region can be arranged to overlap with a non-display region of the display panel 200 to cover the non-display region. The non-display region of the display panel 200 refers to a region that does not include a pixel PX and thus does not display an image. The light-blocking region can be opaque. In some embodiments, the display device 10 can further include a light-blocking member arranged in a predetermined width along an edge of a rear surface of the cover window 100.

[0060] Referring to Figures 1-5 , the display panel 200 can be a light-emitting display panel 200 including a light-emitting element. For example, the display panel 200 can be an organic light-emitting display panel using an organic light-emitting diode including an organic light-emitting layer 172 (see Figure 10 ), a micro light-emitting diode display panel using a micro LED, a quantum dot light-emitting display panel including a quantum dot light-emitting diode including a quantum dot emission layer, or an inorganic light-emitting display panel using an inorganic light-emitting element including an inorganic semiconductor. According to embodiments of the disclosure, the display panel 200 can be, but is not limited to, an organic light-emitting display panel.

[0061] The display panel 200 can include a substrate SUB (see Figure 10 ).

[0062] The substrate SUB can have flexibility. Accordingly, the display panel 200 can be bent so that it conforms to the shape of the cover window 100, and can be attached to the cover window 100. Specifically, the display panel 200 can be attached on the inner surface of the space formed by the front surface 110 and the side surfaces 120 of the cover window 100. Specifically, the front surface 210, the first side surface 220_1, the second side surface 220_2, the third side surface 220_3, and the fourth side surface 220_4 of the display panel 200, which will be described later, can be attached to the front surface 110, the first side surface 120_1, the second side surface 120_2, the third side surface 120_3, and the fourth side surface 120_4 of the cover window 100, respectively.

[0063] The substrate SUB can be a flexible substrate capable of being bent, folded, or rolled, and can include or be made of plastic. For example, the substrate SUB can include or be made of polyether sulfone ("PES"), polyarylate ("PA"), polyacrylate ("PAR"), polyetherimide ("PEI"), polyethylene naphthalate ("PEN"), polyethylene terephthalate ("PET"), polyphenylene sulfide ("PPS"), polyimide ("PI"), polycarbonate ("PC"), cellulose triacetate ("CAT"), cellulose acetate propionate ("CAP"), or a combination thereof. Alternatively, the substrate SUB can include a metallic material.

[0064] The substrate SUB can have the same size as the cover window 100 or can have a different size. According to an embodiment of the disclosure, the substrate SUB can be smaller than the cover window 100. In some embodiments, the size of the substrate SUB can be equal to or greater than the size of the cover window 100.

[0065] Referring to Figure 4 and Figure 5When viewed from the top (i.e., in a plan view), the substrate SUB can have a substantially rectangular shape including a shorter side extending in the first direction X and a longer side extending in the second direction Y when unfolded. According to an embodiment of the disclosure, one side of the substrate SUB can be extended to protrude outward, thereby forming a bridge area BA and a pad area PA, which will be described later. However, it should be understood that the disclosure is not limited thereto. In some embodiments, the bridge area BA and the pad area PA can be replaced with a flexible film and a circuit board, respectively. In another embodiment, the substrate SUB can have other polygonal shapes, a circular shape, or an elliptical shape when viewed from the top.

[0066] When the substrate SUB is unfolded, a corner of the substrate SUB can have a convex curvature outward when viewed from the top. The corner of the substrate SUB can include a corner of the front surface 210 (to be described later). According to an embodiment of the disclosure, edges of the side surface 220 of the substrate SUB can be connected to each other to form the corner of the substrate SUB, which will be described later. Each of the corners of the substrate SUB can have at least one center of curvature. In some embodiments, edges of the side surface 220 of the substrate SUB and edges of the corner of the front surface 210 of the substrate SUB arranged therebetween can be connected to each other to form the corner of the substrate SUB. In some embodiments, the corner of the substrate SUB can be curved in the thickness direction.

[0067] For the convenience of illustration, in Figure 5 the upper right corner of the substrate SUB is referred to as a first corner CR1, the lower right corner thereof is referred to as a second corner CR2, the lower left corner thereof is referred to as a third corner CR3, and the upper left corner thereof is referred to as a fourth corner CR4.

[0068] The substrate SUB can further include a front surface 210 and a side surface 220. The substrate SUB can further include a bridge area BA and a pad area PA.

[0069] The front surface 210 of the substrate SUB can have, but is not limited to, a substantially rectangular shape including a shorter side extending in the first direction X and a longer side extending in the second direction Y when viewed from the top. In another embodiment, the front surface 210 of the substrate SUB can have other polygonal shapes, a circular shape, or an elliptical shape when viewed from the top. The corner of the front surface 210 of the substrate SUB can have a convex curvature toward the outside when viewed from the top. In some embodiments, the corner of the front surface 210 of the substrate SUB can be curved in the thickness direction.

[0070] The side surface 220 of the substrate SUB is arranged to surround at least a portion of the front surface 210 of the substrate SUB. According to an embodiment of the disclosure, the side surface 220 of the substrate SUB is arranged to surround the edges of the front surface 210 of the substrate SUB completely.

[0071] The side surface 220 of the substrate SUB can extend from the edge of the substrate SUB and be curved in a thickness direction. According to an embodiment of the disclosure, an angle between the front surface 210 and the side surface 220 of the substrate SUB can be in a range of, but not limited to, from 70° to 120°.

[0072] The side surface 220 of the substrate SUB can include a first side surface 220_1, a second side surface 220_2, a third side surface 220_3, and a fourth side surface 220_4.

[0073] The first side surface 220_1, the second side surface 220_2, the third side surface 220_3, and the fourth side surface 220_4 of the substrate SUB respectively extend from the first edge, the second edge, the third edge, and the fourth edge of the front surface 210 of the substrate SUB and are curved in a thickness direction.

[0074] The first side surface 220_1, the second side surface 220_2, the third side surface 220_3, and the fourth side surface 220_4 of the substrate SUB can be arranged to completely surround the edge of the front surface 210 of the substrate SUB. The outermost edges of the first side surface 220_1, the second side surface 220_2, the third side surface 220_3, and the fourth side surface 220_4 of the substrate SUB can form a boundary of the substrate SUB.

[0075] The widths of the first side surface 220_1, the second side surface 220_2, the third side surface 220_3, and the fourth side surface 220_4 of the substrate SUB can decrease toward the corners of the front surface 210 of the substrate SUB. The width can include a length in the third direction Z. Thus, a gap that widens toward a lower side can be respectively formed between the first side surface 220_1 and the second side surface 220_2, between the second side surface 220_2 and the third side surface 220_3, between the third side surface 220_3 and the fourth side surface 220_4, and between the fourth side surface 220_4 and the first side surface 220_1. The edges of the first side surface 220_1, the second side surface 220_2, the third side surface 220_3, and the fourth side surface 220_4 of the substrate SUB can be in contact with the corners of the front surface 210 of the substrate SUB.

[0076] The first side surface 220_1, the second side surface 220_2, the third side surface 220_3, and the fourth side surface 220_4 of the substrate SUB can be curved to have a curvature that is convex toward an outer side. The curvatures of the first side surface 220_1, the second side surface 220_2, the third side surface 220_3, and the fourth side surface 220_4 of the substrate SUB can be equal to or different from each other. For example, the first side surface 220_1 and the third side surface 220_3 of the substrate SUB can be curved with a first curvature, and the second side surface 220_2 and the fourth side surface 220_4 of the substrate SUB can be curved with a second curvature.

[0077] The first side surface 220_1, the second side surface 220_2, the third side surface 220_3, and the fourth side surface 220_4 of the substrate SUB can be curved along a first bending line BL1, a second bending line BL2, a third bending line BL3, and a fourth bending line BL4, respectively. The first bending line BL1, the second bending line BL2, the third bending line BL3, and the fourth bending line BL4 can be virtual lines serving as bending references. The first bending line BL1 and the third bending line BL3 can extend in a first direction X, and the second bending line BL2 and the fourth bending line BL4 can extend in a second direction Y. According to embodiments of the present disclosure, the first direction X can be perpendicular to the second direction Y.

[0078] The first bending line BL1 and the second bending line BL2, the second bending line BL2 and the third bending line BL3, the third bending line BL3 and the fourth bending line BL4, and / or the fourth bending line BL4 and the first bending line BL1 can meet or intersect each other around an edge of the substrate SUB, respectively. For example, the first bending line BL1 and the second bending line BL2, the second bending line BL2 and the third bending line BL3, the third bending line BL3 and the fourth bending line BL4, and / or the fourth bending line BL4 and the first bending line BL1 can meet or intersect each other at the edge of the substrate SUB, or can intersect on an inner side or an outer side of the substrate SUB with respect to the edge.

[0079] The first bending line BL1, the second bending line BL2, the third bending line BL3, and the fourth bending line BL4 can meet to form a corner. The corner of the bending line can have a curvature convex toward the outer side when viewed from the top. In some embodiments, the corner of the bending line can be curved in the thickness direction. According to embodiments of the present disclosure, the corner of the bending line can be in contact with the edge of the substrate SUB. In some embodiments, a portion of the corner of the bending line can be disposed on the outer side of the substrate SUB with respect to the edge of the substrate SUB. In some embodiments, the corner of the bending line can be spaced apart from the edge of the substrate SUB toward the inner side.

[0080] The bridge area BA can extend from a lower side of the third side surface 220_3. The bridge area BA can be disposed between the third side surface 220_3 and the pad area PA. A length of the bridge area BA in the first direction X can be less than a length of the third side surface 220_3 in the first direction X. The bridge area BA can be curved along a fifth bending line BL5 on the lower side of the third side surface 220_3.

[0081] The pad area PA can extend from the lower side of the bridge area BA. The length of the pad area PA in the first direction X can be greater than the length of the bridge area BA in the first direction X. However, it should be understood that the present disclosure is not limited thereto. In an embodiment, the length of the pad area PA in the first direction X can be substantially equal to the length of the bridge area BA in the first direction X. The pad area PA can be bent along a sixth bending line BL6 on the lower side of the bridge area BA. The pad area PA can be disposed on the lower side of the front surface 210. According to an embodiment of the present disclosure, the pad PAD and the integrated driver circuit IDC that receives digital video data and timing signals through the pad PAD can be disposed in the pad area PA.

[0082] The substrate SUB can further include a display area DA and a non-display area NDA. The display area DA is an area for displaying an image. A plurality of pixels PX can be disposed in the display area DA. According to an embodiment of the present disclosure, the display area DA can be disposed to span the front surface 210, the first side surface 220_1, the second side surface 220_2, the third side surface 220_3, and the fourth side surface 220_4 of the substrate SUB. The display area DA can be spaced apart from the edges of the substrate SUB. According to an embodiment of the present disclosure, the pixels PX and the scan lines SL and data lines DL connected to the pixels PX, etc. can be disposed in the display area DA.

[0083] In the non-display area NDA, an image is not displayed. The non-display area NDA can not include the pixels PX. The non-display area NDA can be arranged in a band shape surrounding the display area DA. The non-display area NDA can be disposed from the edges of the substrate SUB to the display area DA. The non-display area NDA can have a smaller area than the display area DA. In the non-display area NDA, a scan driver circuit SDC for applying a scan signal to the scan lines SL, a fan-out line connecting the data lines DL with the integrated driver circuit IDC, a first power voltage line VSSL, and other external lines can be disposed.

[0084] The non-display area NDA can be disposed at the edges of the first side surface 220_1, the edges of the second side surface 220_2, the edges of the third side surface 220_3, the edges of the fourth side surface 220_4, and / or the corners of the front surface 210. In an embodiment, the non-display area NDA can be disposed at the edges of the first side surface 220_1, the edges of the second side surface 220_2, the edges of the third side surface 220_3, the edges of the fourth side surface 220_4, and / or the corners of the front surface 210. Figure 5In detail, according to an embodiment of the disclosure, the non-display area NDA can be disposed at a left edge, an upper edge, and a right edge of the first side surface 220_1, at an upper edge, a right edge, and a lower edge of the second side surface 220_2, at a right edge, a lower edge, and a left edge of the third side surface 220_3, and at a lower edge, a left edge, and an upper edge of the fourth side surface 220_4. In this regard, the non-display area NDA can be disposed at a first corner CR1 of the front surface 210 connecting the right edge of the first side surface 220_1 with the upper edge of the second side surface 220_2, at a second corner CR2 of the front surface 210 connecting the lower edge of the second side surface 220_2 with the right edge of the third side surface 220_3, at a third corner CR3 connecting the left edge of the third side surface 220_3 with the lower edge of the fourth side surface 220_4, and at a fourth corner CR4 connecting the upper edge of the fourth side surface 220_4 with the left edge of the first side surface 220_1.

[0085] According to the arrangement and shape of the display area DA and the non-display area NDA of the substrate SUB, a display area and a non-display area, respectively, substantially identical or similar to the display area DA and the non-display area NDA of the substrate SUB can be defined in the display device 10 and other elements of the display device 10.

[0086] Referring to Figure 3 , the display panel 200 can further include a thin film transistor layer TFTL, an emission material layer EML, and an encapsulation layer TFE disposed on the substrate SUB. The display panel 200 can further include a sensor electrode layer SENL.

[0087] The thin film transistor layer TFTL, the emission material layer EML, the encapsulation layer TFE, and the sensor electrode layer SENL can be disposed between the cover window 100 and the substrate SUB. The thin film transistor layer TFTL, the emission material layer EML, the encapsulation layer TFE, and the sensor electrode layer SENL can be bent together with the substrate SUB. Although not shown in the drawings, in some embodiments, an adhesive layer can be disposed between the cover window 100 and the display panel 200. This will be described later with reference to FIG. 6. Figure 10 The thin film transistor layer TFTL, the emission material layer EML, the encapsulation layer TFE, and the sensor electrode layer SENL will be described in detail.

[0088] Referring to Figures 1-3 , Figure 6 and Figure 7The cover panel 300 can be attached to the rear surface of the display panel 200. The cover panel 300 can be flexible and thus can be bent or folded. The cover panel 300 can have a shape conforming to that of the display panel 200. According to embodiments of the present disclosure, the cover panel 300 can have a substantially rectangular plate shape in which four edges are curved. Specifically, the front surface 310, the first side surface 320_1, the second side surface 320_2, the third side surface 320_3, and the fourth side surface 320_4 of the cover panel 300, which will be described later, can be attached to the front surface 210, the first side surface 220_1, the second side surface 220_2, the third side surface 220_3, and the fourth side surface 220_4 of the display panel 200, respectively. The cover panel 300 can be flexible and thus can be bent or folded. The cover panel 300 can be implemented as an element in the form of a film.

[0089] The cover panel 300 can have the same size as that of the display panel 200 or a different size. According to embodiments of the present disclosure, the size of the cover panel 300 can be smaller than that of the display panel 200. Thus, the edges of the cover panel 300 can be disposed to be spaced apart from the edges of the display panel 200 by a predetermined distance toward the inside. In some embodiments, the size of the cover panel 300 can be equal to or greater than that of the display panel 200. In some embodiments, the edges of the cover panel 300 and the edges of the display panel 200 can be aligned to overlap each other in the thickness direction.

[0090] When the cover panel 300 is unfolded, the cover panel 300 can have, but is not limited to, a substantially rectangular shape having a shorter side extending in the first direction X and a longer side extending in the second direction Y when viewed from the top. In another embodiment, for example, the cover panel 300 can have other polygonal shapes, a circular shape, or an elliptical shape when viewed from the top.

[0091] When the cover panel 300 is unfolded, the corners of the cover panel 300 can have a curvature convex toward the outside when viewed from the top. The corners of the cover panel 300 can include the corners of the front surface 310, which will be described later. According to embodiments of the present disclosure, the edges of the side surfaces 320 of the cover panel 300, which will be described later, can be connected to each other to form the corners of the cover panel 300. Each of the corners of the cover panel 300 can have at least one center of curvature. In some embodiments, the edges of the corners of the front surface 310 of the cover panel 300 disposed between the edges of the side surfaces 320 of the cover panel 300 can be connected to each other to form the corners of the cover panel 300. In some embodiments, the corners of the cover panel 300 can be curved in the thickness direction.

[0092] For the convenience of illustration, as Figure 6As shown in the middle, the upper right corner of the cover panel 300 is referred to as a first corner 300_CR1, the lower right corner thereof is referred to as a second corner 300_CR2, the lower left corner thereof is referred to as a third corner 300_CR3, and the upper left corner thereof is referred to as a fourth corner 300_CR4.

[0093] The cover panel 300 can further include a front surface 310 and side surfaces 320.

[0094] The front surface 310 of the cover panel 300 can have, but is not limited to, a substantially rectangular shape including a shorter side extending in the first direction X and a longer side extending in the second direction Y when viewed from the top. In another embodiment, the front surface 310 of the cover panel 300 can have other polygonal shapes, a circular shape, or an elliptical shape when viewed from the top. The corners of the front surface 310 of the cover panel 300 can have a curvature convex toward the outside when viewed from the top (i.e., plan view). In some embodiments, the corners of the front surface 310 of the cover panel 300 can be curved in the thickness direction.

[0095] The side surfaces 320 of the cover panel 300 are arranged to surround at least a portion of the front surface 310 of the cover panel 300. According to embodiments of the present disclosure, the side surfaces 320 of the cover panel 300 can be arranged to completely surround the edges of the front surface 310 of the cover panel 300.

[0096] The side surfaces 320 of the cover panel 300 extend from the edges of the cover panel 300 and are curved in the thickness direction. According to embodiments of the present disclosure, the angle between the front surface 310 and the side surfaces 320 of the cover panel 300 can be in the range of, but is not limited to, from 70° to 120°.

[0097] The side surfaces 320 of the cover panel 300 can include a first side surface 320_1, a second side surface 320_2, a third side surface 320_3, and a fourth side surface 320_4.

[0098] The first side surface 320_1, the second side surface 320_2, the third side surface 320_3, and the fourth side surface 320_4 of the cover panel 300 extend from the first edge, the second edge, the third edge, and the fourth edge of the front surface 310 of the cover panel 300 and are curved in the thickness direction.

[0099] The first side surface 320_1, the second side surface 320_2, the third side surface 320_3, and the fourth side surface 320_4 of the cover panel 300 can be arranged to completely surround the edges of the front surface 310 of the cover panel 300. The outermost edges of the first side surface 320_1, the second side surface 320_2, the third side surface 320_3, and the fourth side surface 320_4 of the cover panel 300 can form the boundary of the cover panel 300.

[0100] The widths of the first side surface 320_1, the second side surface 320_2, the third side surface 320_3, and the fourth side surface 320_4 of the cover panel 300 can be smaller toward the corners of the front surface 310 of the cover panel 300. The width can include a length in the third direction Z. Accordingly, a gap that widens toward the lower side can be formed between the first side surface 320_1 and the second side surface 320_2, between the second side surface 320_2 and the third side surface 320_3, between the third side surface 320_3 and the fourth side surface 320_4, and between the fourth side surface 320_4 and the first side surface 320_1, respectively. The first side surface 320_1, the second side surface 320_2, the third side surface 320_3, and the fourth side surface 320_4 of the cover panel 300 can be in contact with the corners of the front surface 310 of the cover panel 300.

[0101] The first side surface 320_1, the second side surface 320_2, the third side surface 320_3, and the fourth side surface 320_4 of the cover panel 300 can be curved to have a curvature convex toward the outer side. The curvatures of the first side surface 320_1, the second side surface 320_2, the third side surface 320_3, and the fourth side surface 320_4 of the cover panel 300 can be equal to or different from each other. For example, the first side surface 320_1 and the third side surface 320_3 of the cover panel 300 can be curved with a first curvature, and the second side surface 320_2 and the fourth side surface 320_4 of the cover panel 300 can be curved with a second curvature.

[0102] The first side surface 320_1, the second side surface 320_2, the third side surface 320_3, and the fourth side surface 320_4 of the cover panel 300 can be curved along first, second, third, and fourth bending lines BL1, BL2, BL3, and BL4, respectively. The first, second, third, and fourth bending lines BL1, BL2, BL3, and BL4 can be virtual lines serving as a bending reference. The first and third bending lines BL1 and BL3 can extend in the first direction X, and the second and fourth bending lines BL2 and BL4 can extend in the second direction Y. According to an embodiment of the disclosure, the first direction X can be perpendicular to the second direction Y.

[0103] The first bending line BL1 and the second bending line BL2, the second bending line BL2 and the third bending line BL3, the third bending line BL3 and the fourth bending line BL4, and / or the fourth bending line BL4 and the first bending line BL1 can meet or intersect each other around the edge of the cover panel 300. For example, the first bending line BL1 and the second bending line BL2, the second bending line BL2 and the third bending line BL3, the third bending line BL3 and the fourth bending line BL4, and / or the fourth bending line BL4 and the first bending line BL1 can meet or intersect each other at the edge of the cover panel 300, or can intersect on the inside or the outside of the cover panel 300 with respect to the edge.

[0104] The first bending line BL1, the second bending line BL2, the third bending line BL3, and the fourth bending line BL4 can meet to form a corner. When viewed from the top, the corner of the bending line can have a curvature convex toward the outside. In some embodiments, the corner of the bending line can be curved in the thickness direction. According to embodiments of the present disclosure, the corner of the bending line can be in contact with the edge of the cover panel 300. In some embodiments, a portion of the corner of the bending line can be disposed on the outside of the cover panel 300 with respect to the edge of the cover panel 300. In some embodiments, the corner of the bending line can be spaced apart from the edge of the cover panel 300 toward the inside.

[0105] According to embodiments of the present disclosure, the first bending line BL1 to the fourth bending line BL4 of the cover panel 300 can be substantially the same as the first bending line BL1 to the fourth bending line BL4 of the display panel 200 shown in FIGS. 1A to 1C. Figure 4 and Figure 5 In some embodiments, at least one of the interval between the first bending line BL1 and the third bending line BL3 and the interval between the second bending line BL2 and the fourth bending line BL4 of the cover panel 300 can each be smaller than the interval between the first bending line BL1 and the third bending line BL3 and the interval between the second bending line BL2 and the fourth bending line BL4 of the display panel 200.

[0106] Referring to Figure 7 , the cover panel 300 can include a polymer film layer PF, a cushion member CS, and a heat dissipation member HD, which are sequentially stacked on the rear surface of the display panel 200.

[0107] The polymer film layer PF can include a polymer film. The polymer film layer PF can include, for example, polyimide (PI), polyethylene terephthalate (PET), polycarbonate (PC), polyethylene ("PE"), polypropylene ("PP"), polysulfone ("PSF"), polymethyl methacrylate ("PMMA"), triacetyl cellulose ("TAC"), cyclic olefin polymer ("COP"), or the like. The polymer film layer PF can include a functional layer on at least one surface. The functional layer can include, for example, a light absorbing layer. The light absorbing layer can include a light absorbing material, such as a black pigment and dye. The light absorbing layer can be formed on the polymer film by coating or printing a black ink.

[0108] The cushioning member CS can be disposed on a rear side of the polymer film layer PF. The cushioning member CS can absorb an external impact to prevent the display device 10 from being damaged. The cushioning member CS can be composed of a single layer or a stack of multiple layers. The cushioning member CS can include a material having elasticity, such as polyurethane and polyethylene resin. The cushioning member CS can be a cushioning layer. In some implementations, the cushioning member CS can be eliminated.

[0109] The heat dissipation member HD can be disposed on a rear side of the cushioning member CS. The heat dissipation member HD functions to diffuse heat generated from the display panel 200 or other elements of the display device 10. The heat dissipation member HD can include a metal plate. The metal plate can include, for example, a metal having excellent heat conductivity, such as copper and silver. The heat dissipation member HD can be a heat sink including graphite or carbon nanotubes. The heat dissipation member HD, in addition to the heat dissipation function, can also shield electromagnetic waves.

[0110] The cover panel 300 can further include coupling members CM1, CM2, and CM3 that couple adjacent ones of the elements on the rear side to each other. For example, the first coupling member CM1 can be disposed between the display panel 200 and the polymer film layer PF, the second coupling member CM2 can be disposed between the polymer film layer PF and the cushioning member CS, and the third coupling member CM3 can be disposed between the cushioning member CS and the heat dissipation member HD.

[0111] Referring back to Figure 4 and Figure 5 , the display panel 200 can further include an alignment mark AM.

[0112] The alignment mark AM can serve as an identification mark for aligning and assembling the display panel 200 with another element. For example, the other element can be the cover panel 300. For another example, the other element can be the cover window 100.

[0113] The alignment mark AM can be disposed at at least one of the first corner CR1, the second corner CR2, the third corner CR3, and the fourth corner CR4 of the display panel 200. According to an embodiment of the disclosure, the alignment mark AM can be disposed at the first corner CR1, the second corner CR2, the third corner CR3, and the fourth corner CR4, respectively. According to an embodiment of the disclosure, the alignment mark AM can be disposed at the non-display area NDA of the first corner CR1, the second corner CR2, the third corner CR3, and the fourth corner CR4.

[0114] The alignment mark AM can include an opaque material. The alignment mark AM, the thin film transistor layer TFTL, the emission material layer EML, the encapsulation layer TFE, and the sensor electrode layer SENL can include the same material. The same material can be a metal. For example, the alignment mark AM can include one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof. The alignment mark AM will be described later with reference to FIGS. 6A and 6B. Figure 8 and Figure 11 Arrangements and shapes of the alignment mark AM are described.

[0115] Referring to FIG. 5A, Figure 6 The cover panel 300 can define at least one alignment notch AH. Specifically, like the display panel 200, the cover panel 300 can also include an identification mark for alignment having a notch shape. In some embodiments, the identification mark can be substantially the same as or similar to the alignment mark AM of the display panel 200.

[0116] The alignment notch AH can serve as an identification mark for aligning and assembling the cover panel 300 with another element. For example, the other element can be the display panel 200.

[0117] The alignment notch AH can be defined at at least one of the first corner 300_CR1, the second corner 300_CR2, the third corner 300_CR3, and the fourth corner 300_CR4 of the cover panel 300. According to an embodiment of the disclosure, the alignment notch AH can be defined at the first corner 300_CR1, the second corner 300_CR2, the third corner 300_CR3, and the fourth corner 300_CR4, respectively. According to an embodiment of the disclosure, the alignment notch AH can be defined such that at least a portion thereof overlaps with the non-display area NDA of the display panel 200 in the thickness direction. In Figure 6 In FIG. 6B, the outermost dashed line shows the boundary of the display panel 200, and the solid line within the outermost dashed line shows the boundary of the cover panel 300.

[0118] The alignment notch AH can have a shape recessed from edges of the first corner 300_CR1, the second corner 300_CR2, the third corner 300_CR3, and / or the fourth corner 300_CR4 of the cover panel 300. In other words, the alignment notch AH can have a shape defined by cutting a portion of the cover panel 300. According to an embodiment of the disclosure, the alignment notch AH can have an L shape defined by cutting edges of the first corner 300_CR1, the second corner 300_CR2, the third corner 300_CR3, and the fourth corner 300_CR4 when viewed from the top.

[0119] As described above, the alignment notch AH of the cover panel 300 can serve as an identification mark for aligning and assembling the cover panel 300 with the display panel 200 together with the alignment mark AM of the display panel 200. First, the alignment mark AM of the display panel 200 will be described with reference to Figures 8-11 The alignment mark AM of the display panel 200 will be described in detail.

[0120] Figure 8 FIG. 1A is a plan view of a first corner of a display panel of a display apparatus according to an embodiment of the disclosure before a side surface is curved. Figure 9 FIG. 1B is a plan view of the first corner of the display panel of the display apparatus according to the embodiment of the disclosure after the side surface is curved. Figure 10 FIG. 1C is a cross-sectional view taken along line I-I' of FIG. 1A. Figure 8 FIG. 1D is a plan view of a non-display area of the display panel of FIG. 1A. Figure 11 FIG. 1E is a plan view of the non-display area of FIG. 1D. Figure 10 FIG. 1F is a plan view of the non-display area of FIG. 1D.

[0121] The alignment marks AM arranged at the second corner CR2, the third corner CR3, and the fourth corner CR4 of the display panel 200 are substantially the same as or similar to the alignment mark AM arranged at the first corner CR1, and thus only the alignment mark AM arranged at the first corner CR1 will be described.

[0122] Referring to FIGS. 1A to 1F, Figure 8 and Figure 9 The alignment mark AM can be arranged in the central area CA of the first corner CR1.

[0123] In the central area CA of the first corner CR1, deformation due to the curvature of the side surface 220 of the display panel 200 can not occur or can occur relatively less than in other areas. Thus, unlike the alignment mark AM arranged in a straight line area or the like at an edge of the side surface 220 of the display panel 200, the alignment mark AM can be identified even when the side surface 220 of the display panel 200 is curved.

[0124] The center area CA of the first corner CR1 can be a portion of the non-display area NDA arranged along an edge of the first corner CR1 arranged at a corner of the front surface 210 of the substrate SUB. The center area CA of the first corner CR1 can also include a portion of the non-display area NDA of the first side surface 220_1 and the second side surface 220_2 adjacent to the portion of the non-display area NDA arranged at the corner of the front surface 210 of the substrate SUB.

[0125] The center area CA of the first corner CR1 can be located inside the bending line. Specifically, the center area CA of the first corner CR1 can be a region of the first corner CR1 located inside the first bending line BL1 and the second bending line BL2. The inside can indicate a side closer to the center of the substrate SUB. According to an embodiment of the disclosure, the center area CA of the first corner CR1 can be a portion of the first corner CR1 not bent downward. In some embodiments, when the first side surface 220_1 and the second side surface 220_2 are bent in the thickness direction, the center area CA of the first corner CR1 can be bent together with the first side surface 220_1 and the second side surface 220_2. Accordingly, the alignment mark AM can also be bent in the thickness direction. The center area CA of the first corner CR1 can be less bent than the first side surface 220_1 and the second side surface 220_2. For example, a height difference between the center area CA of the first corner CR1 and a central portion of the front surface 210 of the substrate SUB can be in a range of about 0.2 millimeters (mm) to 0.8 mm.

[0126] The center area CA of the first corner CR1 can be located within a predetermined range from the center CC2 of the first corner CR1. The center area CA of the first corner CR1 can be spaced apart from a shorter side of the substrate SUB extending in the first direction X and a longer side thereof extending in the second direction Y. The size of the center area CA of the first corner CR1 can be about one fourth of the size of the first corner CR1. The center area CA of the first corner CR1 can be located within a predetermined range from a reference line R. The reference line R can be a virtual line passing through the center CC2 of the first corner CR1 and the center of curvature CC1 of the first corner CR1. The center CC2 of the first corner CR1 can be a point equally dividing an arc of an edge of the first corner CR1. The reference line R can form a predetermined angle with the first bending line BL1 and / or the second bending line BL2. For example, the predetermined angle can be about 30° to 60°. For another example, the predetermined angle can be about 45°.

[0127] The central area CA of the first corner CR1 can be located within a predetermined distance range from the reference line R. According to an embodiment of the disclosure, the central area CA of the first corner CR1 can be located within a first distance D1 in a counterclockwise direction from the reference line R and within a second distance D2 in a clockwise direction from the reference line R. The first distance D1 can be equal to or different from the second distance D2. For example, the first distance D1 and the second distance D2 can be greater than 0 mm and equal to or less than 1 mm. For another example, the first distance D1 can be greater than 0 mm and equal to or less than 0.5 mm, and the second distance D2 can be greater than 0 mm and equal to or less than 1.5 mm. The radius of curvature of the arc of the first corner CR1 can be about 8 mm to 12 mm, and the length of the arc of the first corner CR1 can be about 15 mm to 20 mm.

[0128] The central area CA of the first corner CR1 can be located within a predetermined angle range from the reference line R. According to an embodiment of the disclosure, the central area CA of the first corner CR1 can be located within a first angle AN1 in a counterclockwise direction from the reference line R with respect to the radius of curvature of the first corner CR1 and within a second angle AN2 in a clockwise direction from the reference line R. The first angle AN1 can be equal to or different from the second angle AN2. For example, the first angle AN1 and the second angle AN2 can be greater than about 0° and less than 15°. For another example, the first angle AN1 can be greater than about 0° and equal to or less than 15°, and the second angle AN2 can be greater than 0° and equal to or less than 30°. For another example, the first angle AN1 and the second angle AN2 can be about 11.25°.

[0129] Referring to Figure 9 , the display device 10 can allow the alignment mark AM of the display panel 200 that is bendable along a bending line in different directions to be more easily recognized. Specifically, the camera VC (see FIG. 2) for determining whether the substrate SUB and the cover window 100 are correctly aligned during a process of attaching them is generally placed on the upper side (or front side) or the lower side (or rear side) of the substrate SUB. If the alignment mark AM is arranged between the corners of the substrate SUB, for example, in the straight portion of the side surface 220 that passes through the non-display area NDA, the alignment mark AM can not be easily recognized by the detector (e.g., the camera VC) because the side surface 220 of the substrate SUB is bent or deformation due to bending can occur. In contrast, as shown in Figure 23 , the alignment mark AM of the display device 10 according to an embodiment of the disclosure is arranged at the central area CA of the first corner CR1, enabling the alignment mark AM to be easily recognized by the camera VC because deformation due to bending is reduced even when the first to fourth side surfaces 220_1 to 220_4 of the substrate SUB are all bent. Figure 9

[0130] ​In addition, the alignment marks AM are respectively arranged at the first corner CR1, the second corner CR2, the third corner CR3, and the fourth corner CR4 such that they are spaced apart from each other as much as possible. In the event of an error, this allows more accurate alignment compared to alignment marks arranged between the corners of the substrate.

[0131] A plurality of alignment marks AM can be arranged at the first corner CR1. According to an embodiment of the disclosure, the plurality of alignment marks AM can include a first mark AM1 and a second mark AM2 respectively arranged on two different layers among a plurality of layers stacked on the substrate SUB. In some embodiments, the plurality of alignment marks AM can be arranged on the same layer. Reference will be made to FIGS. 2A and 2B. Figure 10 A stacked structure of the display panel 200 will be described.

[0132] Referring to Figure 10 The display panel 200 can include a thin film transistor layer TFTL on the substrate SUB, an emission material layer EML on the thin film transistor layer TFTL, and an encapsulation layer TFE on the emission material layer EML. The display panel 200 can further include a sensor electrode layer SENL on the encapsulation layer TFE.

[0133] The thin film transistor layer TFTL can include thin film transistors ST. Each of the thin film transistors ST can be implemented by an active layer ACT, a gate electrode G, a source electrode S, and a drain electrode D, which will be described later. The thin film transistors ST can include pixel transistors arranged in the display area DA and scan driving transistors arranged in the non-display area NDA. According to an embodiment of the disclosure, a scan driver circuit SDC of the display panel 200 can be implemented by the scan driving transistors.

[0134] The thin film transistor layer TFTL can further include a buffer film BF, an active layer ACT on the buffer film BF, a gate insulator 130 on the active layer ACT, a gate electrode G on the gate insulator 130, a first interlayer dielectric layer 141 on the gate electrode G, a capacitor electrode CAE on the first interlayer dielectric layer 141, a second interlayer dielectric layer 142 on the capacitor electrode CAE, a source electrode S penetrating an insulating layer and connected to one side of the active layer ACT, a drain electrode D penetrating the insulating layer and connected to the other side of the active layer ACT, a first organic film 150 on the source electrode S and the drain electrode D, a first power supply connection line VSEL on the second interlayer dielectric layer 142, a first power supply voltage line VSSL arranged on the first organic film 150 and penetrating the first organic film 150 to be connected to the first power supply connection line VSEL, a first connection electrode ANDE penetrating the first organic film 150 to be connected to the drain electrode D, and a second organic film 160 on the first connection electrode ANDE.

[0135] The buffer film BF can include a first buffer film BF1 disposed on the substrate SUB, a second buffer film BF2 disposed on the first buffer film BF1, and a black matrix layer BML disposed between the first buffer film BF1 and the second buffer film BF2.

[0136] The black matrix layer BML, the gate electrode G, the source electrode S, the drain electrode D, the first power connection line VSEL, the first power voltage line VSSL, and the first connection electrode ANDE can include a metal material. For example, the metal material can include one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof.

[0137] The active layer ACT can include polysilicon, single-crystal silicon, low-temperature polysilicon, amorphous silicon, or an oxide semiconductor. The oxide semiconductor can include indium (In), gallium (Ga), zinc (Zn), aluminum (Al), tin (Sn), zirconium (Zr), hafnium (Hf), cadmium (Cd), nickel (Ni), copper (Cu), or the like. When the active layer ACT includes a material such as polysilicon and an oxide semiconductor, the ion-doped region of the active layer ACT can be a conductive region having electrical conductivity.

[0138] The emission material layer EML can be disposed on the second organic film 160. The emission material layer EML can include a first light-emitting electrode 171 on the second organic film 160, an organic light-emitting layer 172 on the first light-emitting electrode 171, a second light-emitting electrode 173 on the organic light-emitting layer 172, and a bank 180 on the second organic film 160.

[0139] The first light-emitting electrode 171 and the second light-emitting electrode 173 can include a metal material. For example, the metal material can include one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof.

[0140] The encapsulation layer TFE can be disposed on the emission material layer EML. The encapsulation layer TFE can include a first inorganic film 191 on the second light-emitting electrode 173, a second inorganic film 193 on the first inorganic film 191, and an organic film 192 between the first inorganic film 191 and the second inorganic film 193.

[0141] The first inorganic film 191 and the second inorganic film 193 can include at least one of a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, and an aluminum oxide layer.

[0142] A portion of the first inorganic film 191 and the second inorganic film 193 may be disposed between the anti-crack hole CH and the dam DAM1, which will be described later. Specifically, a portion of the first inorganic film 191 and the second inorganic film 193 may be disposed between the organic film covering CHC covering the anti-crack hole CH and the dam DAM1. A portion of the first inorganic film 191 and the second inorganic film 193 may be disposed planarly on the second interlayer dielectric layer 142. A portion of the first inorganic film 191 and the second inorganic film 193 may extend planarly from the dam DAM1 toward the organic film covering CHC on the second interlayer dielectric layer 142 with a predetermined width. According to an embodiment of the present disclosure, the predetermined width may be from about 100 micrometers (μm) to 150 μm.

[0143] The edges of the first inorganic film 191 and the second inorganic film 193 may be arranged between the anti-crack hole CH and the dam DAM1. Specifically, the second interlayer dielectric layer 142 may be exposed between the organic film covering CHC and the dam DAM1, and a portion of the first inorganic film 191 and the second inorganic film 193 may cover at least a portion of the second interlayer dielectric layer 142. At least a portion of the edges of each of the first inorganic film 191 and the second inorganic film 193 may overlap or not overlap in the third direction Z. The edges of the first inorganic film 191 and the second inorganic film 193 may be arranged to be spaced apart from the organic film covering CHC by a predetermined width. According to embodiments of the present disclosure, the predetermined width may be about 50 μm to 100 μm.

[0144] The sensor electrode layer SENL is disposed on the encapsulation layer TFE. The sensor electrode layer SENL may be a touch electrode layer for sensing the touch of a person or object. The sensor electrode layer SENL may include a third buffer film BF3 on the encapsulation layer TFE, a sensing line TL on the third buffer film BF3, a first sensor insulating film TINS1 on the sensing line TL, a sensing electrode TE on the first sensor insulating film TINS1, and a second sensor insulating film TINS2 on the sensing electrode TE.

[0145] The sensing line TL and sensing electrode TE may be made of metallic materials. For example, the metallic materials may include one or an alloy of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd) and copper (Cu).

[0146] The display panel 200 may also include anti-crack holes CH, organic film coverings CHC, and dams DAM1.

[0147] The anti-crack via CH is arranged adjacent to the edge of the display panel 200. The anti-crack via CH passes through the first interlayer dielectric layer 141, the second interlayer dielectric layer 142, and the gate insulator 130. The anti-crack via CH can prevent crack propagation.

[0148] The organic film cover CHC covers the crack prevention hole CH. The organic film cover CHC can be formed together with the first organic film 150, or can be a part of the first organic film 150. The organic film cover CHC can be disposed to be spaced apart from the outermost edge of the display panel 200 by a predetermined distance toward the inside. For example, the predetermined distance can be about 80 to 100 µm. The organic film cover CHC can be disposed to have a predetermined width. For example, the predetermined width can be about 20 to 40 µm.

[0149] The dam DAM1 is disposed in the non-display area NDA to surround the edge of the organic film 192 of the encapsulation layer TFE. The dam DAM1 prevents the organic film 192 of the encapsulation layer TFE from overflowing. The dam DAM1 can include a first sub-dam SDAM1 made of the same material as the first organic film 150, a second sub-dam SDAM2 made of the same material as the second organic film 160, and a third sub-dam SDAM3 made of the same material as the bank 180.

[0150] Due to the dam DAM1, the end portion of the organic film 192 of the encapsulation layer TFE can be disposed between the display area DA and the dam DAM1. The first inorganic film 191 and the second inorganic film 193 can be disposed on the dam DAM1. The first inorganic film 191 and the second inorganic film 193 can contact each other on the dam DAM1.

[0151] The dam DAM1 can be disposed further inside the display panel 200 than the crack prevention hole CH and / or the organic film cover CHC (see Figure 10 ). The dam DAM1 can be spaced apart from the edge of the display panel 200 by a predetermined distance. For example, the predetermined distance can be about 285 to 335 µm.

[0152] Referring to Figure 10 As described above, the alignment marks AM1 and AM2 are disposed in the non-display area NDA. According to an embodiment of the disclosure, the alignment marks AM1 and AM2 can be disposed between the crack prevention hole CH and the dam DAM1. Specifically, the alignment marks AM1 and AM2 can be disposed between the organic film cover CHC covering the crack prevention hole CH and the dam DAM1.

[0153] The alignment marks AM1 and AM2 can be disposed at a first width W1 between the organic film cover CHC and the dam DAM1. The first width W1 can be less than a first gap G1 between the organic film cover CHC and the dam DAM1. For example, the first gap G1 can be about 180 pm to 220 pm, and the first width W1 can be about 50 pm to 150 pm. For another example, the first gap G1 can be about 190 pm to 200 pm, and the first width W1 can be about 70 pm to 100 pm. The first width W1 can be equal to the first gap G1 minus the sum of a second gap G2 and a third gap G3, which will be described later. According to embodiments of the present disclosure, the alignment marks AM1 and AM2 can be disposed between edges of the first inorganic film 191 and / or the second inorganic film 193 and the dam DAM1. In some embodiments, the second mark AM2 (to be described later) can be disposed wider than the width between the edges of the first inorganic film 191 and / or the second inorganic film 193 and the dam DAM1, such that a portion thereof can flow down along the side surface of the first inorganic film 191 and / or the second inorganic film 193.

[0154] The alignment marks AM1 and AM2 can be disposed spaced apart from the organic film cover CHC by a second gap G2. The second gap G2 can be a gap between at least one of an edge of the first inorganic film 191 and an edge of the second inorganic film 193 and the organic film cover CHC. For example, the second gap G2 can be about 40 pm to 60 pm. For another example, the second gap G2 can be about 50 pm.

[0155] The alignment marks AM1 and AM2 can be disposed spaced apart from the dam DAM1 by a third gap G3. According to embodiments of the present disclosure, the third gap G3 can be equal to the second gap G2. For example, the third gap G3 can be about 40 pm to 60 pm. For another example, the third gap G3 can be about 50 pm. In some embodiments, the third gap G3 can be greater than or less than the second gap G2.

[0156] The alignment marks AM1 and AM2 can be disposed spaced apart from an edge of the display panel 200 by a fourth gap G4. The edge of the display panel 200 can be an edge of the substrate SUB. The fourth gap G4 can be greater than the second gap G2 and / or the third gap G3. The fourth gap G4 can be less than the first gap G1. For example, the fourth gap G4 can be about 160 pm to 180 pm.

[0157] The alignment marks AM1 and AM2 can be disposed spaced apart from the display area DA by a fifth gap G5. The fifth gap G5 can be greater than the first gap G1 to the fourth gap G4. According to embodiments of the present disclosure, the fifth gap G5 can be 500 pm to 600 pm.

[0158] Referring to Figure 10 and Figure 11As described above, the alignment marks AM1 and AM2 can include a first mark AM1 and a second mark AM2.

[0159] The first mark AM1 and the second mark AM2 can be respectively arranged on two different layers among the plurality of layers of the display panel 200. The second mark AM2 can be arranged above the first mark AM1. According to an embodiment of the disclosure, the first mark AM1 can be arranged on a first layer, and the second mark AM2 can be arranged on a second layer arranged above the first layer. The second layer can be directly arranged on the first layer, or at least one other layer can be arranged between the first layer and the second layer. In some embodiments, the second layer can be located below the first layer. In some embodiments, the first mark AM1 and the second mark AM2 can be arranged on the same layer among the plurality of layers of the display panel 200.

[0160] The first layer can be arranged between other layers forming the display panel 200. Accordingly, the first mark AM1 can be arranged between the plurality of layers forming the display panel 200 and can not be exposed.

[0161] No other layer can be arranged on at least a portion of an upper surface of the second layer. At least a portion of the second layer can be exposed. Accordingly, the second mark AM2 can be exposed to the upper side. The second layer can be the uppermost layer among the plurality of layers forming the display panel 200.

[0162] According to an embodiment of the disclosure, the first layer can be the gate insulator 130, and the second layer can be the second inorganic film 193. Specifically, the first mark AM1 can be arranged between the gate insulator 130 and the first interlayer dielectric layer 141, and the second mark AM2 can be arranged on the second inorganic film 193 so as to be exposed to the upper side.

[0163] The layer and the alignment mark AM disposed on the first and second layers can include the same material. The alignment mark AM can be formed together with the layer disposed on the layer on which the alignment mark AM is disposed. Specifically, the first mark AM1 and the layer disposed on the first layer can be formed together, and the second mark AM2 and the layer disposed on the second layer can be formed together. The layer including the same material as that of the alignment mark AM can be at least one of the black matrix BML, the active layer ACT, the gate electrode G, the source electrode S, the drain electrode D, the first power connection line VSEL, the first power voltage line VSSL, the first light emitting electrode 171, the second light emitting electrode 173, the sensing line TL, and the sensing electrode TE. For example, the material can include a metallic material such as at least one of indium (In), gallium (Ga), zinc (Zn), tin (Sn), zirconium (Zr), hafnium (Hf), cadmium (Cd), nickel (Ni), molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof. Each of the alignment marks AM can be composed of a single layer or multiple layers. According to an embodiment of the disclosure, the first mark AM1 can be formed together with the gate electrode G, and the second mark AM2 can be formed together with the sensing electrode TE or the sensing line TL.

[0164] Referring to Figure 10 and Figure 11 According to an embodiment of the disclosure, the plurality of first marks AM1 and the plurality of second marks AM2 can be disposed such that they do not overlap each other in the third direction Z. In some embodiments, the first marks AM1 and the second marks AM2 can be disposed to overlap each other in the third direction Z.

[0165] The first marks AM1 and the second marks AM2 can be alternately arranged. According to an embodiment of the disclosure, three first marks AM1 can be disposed between two second marks AM2. In some embodiments, one second mark AM2 and three first marks AM1 can be alternately arranged.

[0166] The first marks AM1 and the second marks AM2 can be spaced apart from each other in the first direction X and / or the second direction Y. For example, the first marks AM1 and the second marks AM2 can be spaced apart from each other by 100 µm to 300 µm. The gap between the first marks AM1 and the second marks AM2 can be equal to the gap between the first marks AM1 or the gap between the second marks AM2. In some embodiments, the gap between the first marks AM1 and the second marks AM2 can be greater than the gap between the second marks AM2.

[0167] The first mark AM1 and the second mark AM2 can have various shapes such as a triangle, a square, a diamond, and a cross. The first mark AM1 and the second mark AM2 can have different shapes. A length of each of the first mark AM1 and / or the second mark AM2 can be equal to or greater than a width.

[0168] The first mark AM1 and the second mark AM2 can have different sizes. The size of the second mark AM2 can be greater than the size of the first mark AM1. Specifically, the second mark AM2 is formed on an inorganic film having a larger space than the substrate SUB or the thin film transistor layer TFTL in which various lines or elements are arranged, of the encapsulation layer TFE. Accordingly, the second mark AM2 can be formed larger than the first mark AM1. Accordingly, the second mark AM2 can be more easily recognized than the first mark AM1. The first mark AM1 and the second mark AM2 can have the same width, but a length L1 of the first mark AM1 can be smaller than a length L2 of the second mark AM2. For example, the width of the first mark AM1 and the second mark AM2 can be in a range of about from 70 μm to 100 μm. For another example, the length L1 of the first mark AM1 can be equal to or less than about 300 μm, and the length L2 of the second mark AM2 can be greater than about 300 μm. For another example, the length L2 of the second mark AM2 can be in a range of about from 330 μm to 360 μm.

[0169] The display device 10 according to an embodiment of the present disclosure can reduce deformation of the alignment mark AM. Specifically, when the alignment mark AM is arranged between multiple layers, deformation may occur due to the boundaries of the multiple layers. For example, when the first mark AM1 is formed to overlap with the edges of the first inorganic film 191 and / or the second inorganic film 193, the first mark AM1 may be deformed, making it difficult for the camera VC to recognize the first mark AM1 or causing errors. In this regard, by arranging the second mark AM2 on the uppermost layer (e.g., the second inorganic film 193) among the multiple layers forming the display module, the camera VC can recognize the second mark AM2 to correct errors. Since the second mark AM2 is exposed on the upper side, deformation caused by the boundaries of other layers can be reduced. On the other hand, when the second mark AM2 is arranged on the first inorganic film 191 and the second inorganic film 193, a portion of the second mark AM2 may flow downward along the side surfaces of the first inorganic film 191 and the second inorganic film 193. Therefore, there is a possibility that the second mark AM2 may deform. When this happens, errors caused by the deformation of the second mark AM2 can be corrected by referring to the first mark AM1. Since the first marker AM1 is arranged flat on the gate insulator 130, deformation due to flow is less likely to occur compared to the second marker AM2. That is, the first marker AM1 and the second marker AM2 can function complementaryly. Furthermore, the camera VC can be arranged on the upper (or front) and / or lower (or rear) surfaces of the display panel 200, and the first marker AM1 and the second marker AM2 can be used selectively, depending on which has less deformation. In the following text, reference will be made to... Figure 12 and Figure 14 The alignment notch AH of the cover panel 300 is described in detail.

[0170] Figure 12 This is an enlarged plan view of the first corner of the cover panel of the display device according to an embodiment of the present disclosure before the side surface is bent. Figure 13 This is an enlarged plan view of the first corner of the cover panel of the display device according to an embodiment of the present disclosure after it is bent on the side surface. Figure 14 It is along Figure 13 The cross-sectional view taken from line II-II'. Figure 15 It is along Figure 13 The cross-sectional view taken from line III-III'.

[0171] The alignment notches AH defined at the second corner 300_CR2, the third corner 300_CR3 and the fourth corner 300_CR4 of the cover panel 300 are substantially the same as or similar to the alignment notch AH defined at the first corner 300_CR1, and therefore only the alignment notch AH defined at the first corner 300_CR1 will be described.

[0172] Referring to Figure 12 As described above, the alignment hole AH can be defined at the first corner 300_CR1. Specifically, the alignment hole can be formed in the central area CA' of the first corner 300_CR1.

[0173] When the side surface 320 of the cover panel 300 is curved, the central area CA' of the first corner 300_CR1 can not be deformed, or can be less deformed than other areas. Thus, unlike the alignment hole in a straight area or the like disposed at the edge of the side surface 320 of the cover panel 300, the alignment hole AH can be identified even when the side surface 320 of the cover panel 300 is curved. The central area CA' of the first corner 300_CR1 can be positioned such that it overlaps at least one of the display area DA and the non-display area NDA of the display panel 200 in the thickness direction. According to embodiments of the present disclosure, the alignment hole AH can be defined such that it overlaps the non-display area NDA disposed along the edge of the display panel 200 and the display area DA adjacent thereto in the thickness direction. In some embodiments, the alignment hole AH can be defined such that it overlaps only the non-display area NDA of the display panel 200. In some embodiments, the central area CA' of the first corner 300_CR1 can at least partially overlap the central area CA of the display panel 200.

[0174] The central area CA' of the first corner 300_CR1 can be located inside the bending line. Specifically, the central area CA' of the first corner 300_CR1 can be a region of the first corner 300_CR1 located inside the first bending line BL1 and the second bending line BL2. The inside can indicate a side closer to the center of the substrate SUB. According to embodiments of the present disclosure, the central area CA' of the first corner 300_CR1 can be a portion of the first corner 300_CR1 that is not bent downward. In some embodiments, when the first side surface 320_1 and the second side surface 320_2 are curved in the thickness direction, the central area CA' of the first corner 300_CR1 can be curved together with the first side surface 320_1 and the second side surface 320_2. Thus, the alignment hole AH can also be curved in the thickness direction. The central area CA' of the first corner 300_CR1 can be less curved than the first side surface 320_1 and the second side surface 320_2. For example, a height difference between the central area CA' of the first corner 300_CR1 and a central portion of the front surface 310 of the cover panel 300 can be in a range of about 0.2 mm to 0.8 mm.

[0175] A central area CA' of the first corner 300 CR1 can be located within a predetermined range from a center CC4 of the first corner 300 CR1. The central area CA' of the first corner 300 CR1 can be spaced apart from a shorter side of the substrate SUB extending in the first direction X and a longer side thereof extending in the second direction Y. The central area CA' of the first corner 300 CR1 can have a size of about one fourth of a size of the first corner 300 CR1. The central area CA' of the first corner 300 CR1 can be located within a predetermined range from a reference line R'. The reference line R' can be an imaginary line passing through the center CC4 of the first corner 300 CR1 and a curvature center CC3 of the first corner 300 CR1. The center CC4 of the first corner 300 CR1 can be a point equally dividing an arc of an edge of the first corner 300 CR1. The reference line R' can form a predetermined angle with the first bending line BL1 and / or the second bending line BL2. For example, the predetermined angle can be about 30° to 60°. For another example, the predetermined angle can be about 45°.

[0176] The central area CA' of the first corner 300 CR1 can be located within a predetermined distance range from the reference line R'. According to an embodiment of the disclosure, the central area CA' of the first corner 300 CR1 can be located within a third distance D3 from the reference line R' in a counterclockwise direction and within a fourth distance D4 from the reference line R' in a clockwise direction. The third distance D3 can be equal to or different from the fourth distance D4. For example, the third distance D3 and the fourth distance D4 can be greater than 0 mm and equal to or less than 1 mm. For another example, the third distance D3 can be greater than 0 mm and equal to or less than 0.5 mm, and the fourth distance D4 can be greater than 0 mm and equal to or less than 1.5 mm. A radius of curvature of the arc of the first corner 300 CR1 can be about 8 mm to 12 mm, and a length of the arc of the first corner 300 CR1 can be about 15 mm to 20 mm.

[0177] The central area CA' of the first corner 300 CR1 can be located within a predetermined angle range from the reference line R'. According to an embodiment of the disclosure, the central area CA' of the first corner 300 CR1 can be located within an area covered within a third angle AN3 from the reference line R' in a counterclockwise direction and within a fourth angle AN4 from the reference line R' in a clockwise direction with respect to a radius of curvature of the first corner 300 CR1. The third angle AN3 can be equal to or different from the fourth angle AN4. For example, the third angle AN3 and the fourth angle AN4 can be greater than about 0° and less than 15°. For another example, the third angle AN3 can be greater than about 0° and equal to or less than 15°, and the fourth angle AN4 can be greater than 0° and equal to or less than 30°. For another example, the third angle AN3 and the fourth angle AN4 can be about 11.25°.

[0178] The alignment notch AH can be defined as an L shape or a V shape at the first corner 300_CR1 of the cover panel 300. According to embodiments of the present disclosure, the alignment notch AH can include, but is not limited to, straight portions in different directions. In some embodiments, the alignment notch AH can include a bent portion.

[0179] The alignment notch AH and the alignment mark AM can have different sizes. The size of the alignment notch AH is the area of a region outlined by the boundary of the alignment notch AH and a virtual corner line formed by extending a corner line of the cover panel 300 adjacent to the alignment notch AH. According to embodiments of the present disclosure, the alignment notch AH can be larger than the alignment mark AM. For example, the length of the straight portion in the first direction X and the length of the straight portion in the second direction Y of the alignment notch AH can be about 0.5 mm to 2.5 mm. The straight portion in the first direction X and the straight portion in the second direction Y can have the same length or different lengths. In some embodiments, the size of the alignment notch AH can be equal to or smaller than the size of the alignment mark AM.

[0180] The alignment notch AH can be more defined to the inside compared to the alignment mark AM. According to embodiments of the present disclosure, since the cover panel 300 has a size smaller than the size of the display panel 200, the alignment notch AH is formed on the inside with respect to the edge of the first corner 300_CR1 of the cover panel 300, and the alignment mark AM can be disposed on the outside. According to embodiments of the present disclosure, the alignment notch AH and the alignment mark AM can not overlap each other in the thickness direction. In some embodiments, the alignment notch AH and the alignment mark AM can at least partially overlap each other in the thickness direction.

[0181] Referring to Figure 13 , the display device 10 can allow the alignment notch AH of the cover panel 300 that is bendable along a curved line in different directions to be more easily recognized. Specifically, during the process of assembling the cover panel 300 and the display panel 200, a camera for determining whether they are properly aligned is usually placed on the front surface or the rear surface of the cover panel 300. When the alignment notch AH is formed between the corners of the cover panel 300, for example, in the straight extension portion of the side surface 320 of the cover panel 300, the camera can have difficulty in recognizing the alignment notch AH due to the bending of the side surface 320, or distortion due to the bending can occur. In contrast, as shown in FIG. 1B, the alignment notch AH of the display device 10 according to embodiments of the present disclosure is disposed at the center area CA' of the first corner 300_CR1 so that distortion due to bending is reduced even when the first side surface 320_1 and the second side surface 320_2 adjacent thereto of the cover panel 300 are bent. Accordingly, the alignment notch AH can be easily recognized by the camera. Figure 13

[0182] ​Furthermore, the alignment notches AH are arranged at the first corner 300 CR1, the second corner 300 CR2, the third corner 300 CR3 and the fourth corner 300 CR4, respectively, such that they are spaced apart from each other as much as possible. This allows a more precise alignment when an error occurs compared to alignment notches arranged between the corners of the substrate.

[0183] Referring to Figure 14 and Figure 15 , the cover panel 300 can be attached on the rear surface of the substrate SUB of the display panel 200.

[0184] Referring to Figure 14 , the first corner 300 CR1 of the cover panel 300 can overlap at least a portion of the thin film transistor layer TFTL, the emission material layer EML, the encapsulation layer TFE and / or the sensor electrode layer SENL of the display panel 200. For example, as shown in Figure 14 , the cover panel 300 can be arranged such that it overlaps at least one of the following arranged on the front side: the scan driver circuit SDC, the thin film transistor ST, the first organic film 150, the first connection electrode ANDE, the second organic film 160, the light blocking layer BML, the first light emitting electrode 171, the organic light emitting layer 172, the second light emitting electrode 173, the bank 180, the organic film 192, the third buffer film BF3, the sensing line TL, the first sensor insulating film TINS1, the sensing electrode TE and the second sensor insulating film TINS2. According to embodiments of the present disclosure, the cover panel 300 can be arranged not to overlap at least one of the dam DAM1, the crack prevention hole CH, the organic film cover CHC and the alignment mark AM. However, it should be understood that the present disclosure is not limited thereto.

[0185] Referring to Figure 15As described above, the alignment notch AH can be disposed such that it does not overlap the alignment mark AM in the thickness direction. According to embodiments of the disclosure, the alignment notch AH can overlap at least one of elements of the display panel 200 located at an edge of the display area DA (e.g., the scan driver circuit SDC, the thin film transistor ST, an end portion of the first organic film 150, the first connection electrode ANDE, an end portion of the second organic film 160, the light-blocking layer BML, the first light-emitting electrode 171, the organic light-emitting layer 172, the second light-emitting electrode 173, the bank 180, an end portion of the organic film 192, an end portion of the third buffer film BF3, the sensing line TL, an end portion of the first sensor insulating film TINS1, the sensing electrode TE, and an end portion of the second sensor insulating film TINS2) in the thickness direction. That is, a portion of the edge of the display area DA of the display panel 200, e.g., a pixel defined by the organic light-emitting layer 172 and the bank 180, can not be covered in the area where the alignment notch AH is disposed. Accordingly, a portion of the display area DA of the display panel 200 can be exposed through the alignment notch AH. In some embodiments, the alignment notch AH can be disposed to overlap only the non-display area NDA of the display panel 200, and the display area DA around the alignment notch AH can be completely covered by the cover panel 300.

[0186] Figure 16 is a perspective view of a cover panel of a display device according to another embodiment of the disclosure. Figure 17 is a plan view of a cover panel of a display device according to another embodiment of the disclosure when unfolded. Figure 18 is an enlarged plan view of a first corner of a cover panel of a display device according to another embodiment before a side surface is curved. Figure 19 is an enlarged plan view of a first corner of a cover panel of a display device according to another embodiment after a side surface is curved.

[0187] Figure 16 The embodiment of Figure 1 differs from the embodiment of Figure 16 and Figure 17 in that the cover panel 300 further includes a double curvature portion 300_DC. Referring to

[0188] The double curvature portion 300_DC can be disposed between the side surfaces 320. The double curvature portion 300_DC can connect a corner of the front surface 310 with each of the adjacent side surfaces 320. The double curvature portion 300_DC can have a convex shape. The double curvature portion 300_DC can be curved or bent in a thickness direction to have two or more curvatures. The curvature of the double curvature portion 300_DC can be smaller than the total curvature of the side surface 320. The curvature of the double curvature portion 300_DC can be equal to the curvature of a portion of the side surface 320 adjacent to the edge of the front surface 310. The double curvature portion 300_DC can be formed as first to fourth bending lines BL1 to BL4 serving as bending references of the side surface 320 arranged more inward than the edge of the cover panel 300. However, it should be understood that the present disclosure is not limited thereto.

[0189] Hereinafter, for convenience of illustration, the double curvature portions 300_DC disposed at the four corners of the cover panel 300 are referred to as a first double curvature portion 300_DC1, a second double curvature portion 300_DC2, a third double curvature portion 300_DC3, and a fourth double curvature portion 300_DC4, respectively. The first double curvature portion 300_DC1 can be disposed between the first side surface 320_1 and the second side surface 320_2, the second double curvature portion 300_DC2 can be disposed between the second side surface 320_2 and the third side surface 320_3, the third double curvature portion 300_DC3 can be disposed between the third side surface 320_3 and the fourth side surface 320_4, and the fourth double curvature portion 300_DC4 can be disposed between the fourth side surface 320_4 and the first side surface 320_1.

[0190] The alignment notch AH can be formed at the first to fourth double curvature portions 300_DC1 to 300_DC4, respectively. The alignment notch AH can have an L shape or a V shape formed by removing a portion of the edge of the first to fourth double curvature portions 300_DC1 to 300_DC4. The alignment notch AH can have a shape formed by cutting a portion of the first to fourth double curvature portions 300_DC1 to 300_DC4.

[0191] Referring to Figure 18 and Figure 19 The first corner 300_CR1 of the cover panel 300 can include the first double curvature portion 300_DC1. Similarly to Figure 12 and Figure 13In an embodiment of the disclosure, the alignment notch AH can be disposed in a central area CA' of the first dual curvature portion 300_DC1. The central area CA' of the first dual curvature portion 300_DC1 is defined by a center CC4 of the first corner 300_CR1, a curvature center CC3 of the first corner 300_CR1, and / or a curvature center CC5 of the corner formed as the first bending line BL1 and the second bending line BL2. The central area CA' of the first dual curvature portion 300_DC1 can be defined with respect to the reference line R' in substantially the same or similar manner as the central area CA' of the first corner 300_CR1. Figure 12 and Figure 13 the first corner 300_CR1 of the first dual curvature portion 300_DC1.

[0192] The alignment notch AH can be formed to overlap at least one of the display area DA and the non-display area NDA of the display panel 200 in a thickness direction. According to an embodiment of the disclosure, the alignment notch AH can be formed to overlap only the non-display area NDA.

[0193] The alignment notch AH can be formed outside the first bending line BL1 and the second bending line BL2. The outside can indicate an outside of a closed area formed by the first bending line BL1 to the fourth bending line BL4.

[0194] The cover panel 300 can further include cut lines CL1 and CL2 between the dual curvature portion 300_DC and the side surface 320. The cut lines CL1 and CL2 can be formed along a boundary between the cover panel 300 and the dual curvature portion 300_DC. For example, as shown in FIG. 3B, the first cut line CL1 can be formed between the first side surface 320_1 and the first dual curvature portion 300_DC1, and the second cut line CL2 can be formed between the second side surface 320_2 and the first dual curvature portion 300_DC1. The alignment notch AH can be located between the first cut line CL1 and the second cut line CL2. Figure 18

[0195] Referring to Figure 19 ​The alignment hole FH can be defined on one side of the front surface 310 of the cover panel 300. The side of the front surface 310 can be a region adjacent to the first bending line BL1. Specifically, a distance from the alignment hole FH to the first bending line BL1 in the second direction Y can be smaller than each of distances from the alignment hole FH to the other bending lines BL2, BL3, and BL4. The side of the front surface 310 can be a region adjacent to the first side surface 320_1. Specifically, a distance from the alignment hole FH to the first side surface 320_1 in the second direction Y can be smaller than each of distances from the alignment hole FH to the other side surfaces 320_2, 320_3, and 320_4. In some embodiments, the side of the front surface 310 can be a region adjacent to the third bending line BL3 or the third side surface 320_3. In some embodiments, the side of the front surface 310 can be a central region of the front surface 310.

[0196] Figure 20 is a plan view of a cover panel according to still another embodiment of the disclosure when unfolded.

[0197] Referring to Figures 1-5 , Figures 7-11 and Figure 20 , the cover panel 300 can further include an alignment hole FH defined in the front surface 310.

[0198] The alignment hole FH can be defined to penetrate the cover panel 300 in a thickness direction. The alignment hole FH can serve as an identification mark for aligning the cover panel 300 together with the alignment notch AH.

[0199] The alignment hole FH can be defined on one side of the front surface 310 of the cover panel 300. The side of the front surface 310 can be a region adjacent to the first bending line BL1. Specifically, a distance from the alignment hole FH to the first bending line BL1 in the second direction Y can be smaller than each of distances from the alignment hole FH to the other bending lines BL2, BL3, and BL4. The side of the front surface 310 can be a region adjacent to the first side surface 320_1. Specifically, a distance from the alignment hole FH to the first side surface 320_1 in the second direction Y can be smaller than each of distances from the alignment hole FH to the other side surfaces 320_2, 320_3, and 320_4. In some embodiments, the side of the front surface 310 can be a region adjacent to the third bending line BL3 or the third side surface 320_3. In some embodiments, the side of the front surface 310 can be a central region of the front surface 310.

[0200] The alignment hole FH can be defined to overlap at least one sensor in a plan view. Specifically, the display device 10 can include at least one sensor disposed behind the cover panel 300, and the alignment hole FH can be defined to overlap the at least one sensor in a thickness direction. The at least one sensor can include various sensors such as an image sensor, an infrared sensor, an ultraviolet sensor, a temperature sensor, a distance sensor, and a motion sensor. For example, the alignment hole FH can be defined such that it overlaps a camera unit disposed behind the cover panel 300 and including an image sensor in a thickness direction. In some embodiments, for example, the alignment hole FH can include an opening for allowing a wire or light of the display device 10 to pass therethrough.

[0201] Although a circular alignment hole FH is depicted in Figure 20 , the shape of the alignment hole FH is not limited thereto. The alignment hole FH can be defined to various shapes such as an elliptical shape, a rectangular shape, a square shape, and a triangular shape.

[0202] The alignment notch AH can be disposed only at the second corner 300_CR2 and the third corner 300_CR3 of the cover panel 300. In this case, the alignment notch AH can be disposed to overlap only the non-display area NDA of the display panel 200 in a thickness direction. That is, the alignment notch AH can be located in the non-display area NDA of the display panel 200 when viewed from the top. In some embodiments, as described below, the alignment notch AH and the alignment hole FH can together define at least three points as alignment references. In some embodiments, the alignment notch AH can be formed only at the first corner 300_CR1 and the fourth corner 300_CR4 of the cover panel 300. In some embodiments, the alignment notch AH can be formed only at the first corner 300_CR1 and the second corner 300_CR2 of the cover panel 300, or only at the third corner 300_CR3 and the fourth corner 300_CR4. In some embodiments, the alignment notch AH can be formed only at the first corner 300_CR1 and the third corner 300_CR3 of the cover panel 300. The shape and arrangement of the alignment notch AH and the relationship with the alignment mark AM can be substantially the same as or similar to those of the embodiments of Figures 12-13 .

[0203] Except that the cover panel 300 further includes the alignment hole FH, Figure 20 the embodiments of Figure 1 are substantially the same as or similar to those of the embodiments of

[0204] Figure 21 is a flowchart for illustrating a method for manufacturing a display device according to an embodiment of the present disclosure. Figure 22 is a view illustrating the preparation of a display panel and a cover panel. Figure 23is a view showing alignment marks of a display panel and alignment notches of a cover panel. Figure 24A and Figure 24B is Figure 23 an enlarged perspective view of part D of Figure 25 is a view showing attachment of a cover panel to a display panel.

[0205] A display device manufactured by the method can include Figures 1-20 an embodiment of

[0206] Referring to Figure 21 , a method for manufacturing a display device can include preparing a cover panel 300 including a front surface 310, a first side surface 320_1 connected to the front surface 310 and bent along a first bending line BL1, and a second side surface 320_2 connected to the front surface 310 and bent along a second bending line BL2 intersecting the first bending line BL1 (S101); identifying alignment notches AH formed at corners between the first side surface 320_1 and the second side surface 320_2 of the cover panel 300 (S102); aligning the cover panel 300 (S103); and assembling the cover panel 300 and a display panel 200 (S104).

[0207] The method of manufacturing a display device can further include identifying alignment marks AM arranged at corners of the display panel 200 after preparing the cover panel 300. As shown in Figure 4 and Figure 5 , the display panel 200 can include a front surface 210, a first side surface 220_1 connected to the front surface 210 and bent along a first bending line BL1, a second side surface 220_2 connected to the front surface 210 and bent along a second bending line BL2, a third side surface 220_3 connected to the front surface 210 and bent along a third bending line BL3, and a fourth side surface 220_4 connected to the front surface 210 and bent along a fourth bending line BL4.

[0208] The method of manufacturing a display device can include bending the cover panel 300 before preparing the cover panel 300. In some embodiments, bending the cover panel 300 can be performed simultaneously with assembling the display panel 200 and the cover panel 300.

[0209] Bending the cover panel 300 can further include bending two adjacent sides of the cover panel 300 to form the first side surface 320_1 and the second side surface 320_2.

[0210] Bending the cover panel 300 can include forming a third side surface 320_3 bent along a third bending line BL3 and a fourth side surface 320_4 bent along a fourth bending line BL4 intersecting the third bending line BL3. According to embodiments of the present disclosure, the third bending line BL3 can be parallel to the first bending line BL1, and the fourth bending line BL4 can be parallel to the second bending line BL2.

[0211] The method for manufacturing a display device is not limited to the above-described embodiments, and at least some of the above steps can be omitted, or one or more steps can be added with reference to the embodiments of Figures 1-20 .

[0212] Hereinafter, the method for manufacturing a display device will be described in detail with reference to Figures 22-25 .

[0213] With reference to Figure 22 , the display panel 200 and the cover panel 300 can be prepared. According to embodiments of the present disclosure, four edges of each of the cover window 100, the display panel 200, and the cover panel 300 can be bent. The display panel 200 can be attached to the cover window 100. The specific shapes of the cover window 100, the display panel 200, and the cover panel 300 have been described above with reference to Figures 1-19 . In some embodiments, the cover panel 300 can be bent during the process of assembling the display panel 200 with the cover panel 300. Although not shown in the drawings, the display panel 200, the cover window 100, and the cover panel 300 can be mounted on a movable jig or a worktable and can be transferred. In some embodiments, preparing the display panel 200 and the cover panel 300 can include separating a release paper or the like attached to protect the display panel 200 and / or the cover panel 300, etc.

[0214] With reference to Figure 23 , Figure 24A , and Figure 24B , after the display panel 200 and the cover panel 300 are prepared, the alignment mark AM of the display panel 200 and / or the alignment notch AH of the cover panel 300 can be recognized by the at least one camera VC. Specifically, the at least one camera VC can photograph the corners of the display panel 200 and the cover panel 300, and the alignment mark AM and / or the alignment notch AH can be recognized by a controller processing the photographed images. The camera VC can photograph the alignment notch AH defined at the corner of the front surface 310 of the cover panel 300 as shown in Figure 24A , or as shown in Figure 24B .The alignment notch AH defined at the first dual curvature portion 300 DC1 of the cover panel 300 is illustrated in the middle. For example, the camera VC can photograph all four corners of the display panel 200 and the cover panel 300, or only two or more of the four corners. In some embodiments, only the clearly identified alignment notch AH among the plurality of identified alignment notches AH can be selectively used. In some embodiments, the alignment notch AH can be defined only at two of the four corners of the cover panel 300.

[0215] The camera VC can be placed on the rear surface of the display panel 200 and / or the cover panel 300. According to embodiments of the present disclosure, at least one layer (e.g., the substrate SUB) of the display panel 200 overlapping the alignment mark AM in the thickness direction can include or be made of a transparent material. Thus, even if the camera VC is placed on the rear surface of the display panel 200, the alignment mark AM can be identified. In some embodiments, the alignment mark AM can be directly disposed on the rear surface of the display panel 200. In some embodiments, the camera VC can be disposed on the front surface and / or the side surface of the display panel 200 and / or the cover panel 300.

[0216] Referring to Figure 23 After the alignment mark AM and / or the alignment notch AH are identified, it can be determined whether the display panel 200 and / or the cover panel 300 are located at a correct position for assembly. For example, although not illustrated in the drawings, it can be determined by a controller for controlling the camera VC whether previously stored data is consistent with the identified alignment mark AM and / or the alignment notch AH, etc., so that the display panel 200 and / or the cover panel 300 are located at the correct position.

[0217] The determination as to whether the display panel 200 and the cover panel 300 are located at the correct position can be made based on a plurality of reference points respectively provided for the corners of the cover panel 300 and the display panel 200. The reference points of the cover panel 300 and the display panel 200 can be defined using the alignment notch AH and the alignment mark AM. For example, the determination as to whether the cover panel 300 and the display panel 200 are correctly aligned can be made using the positional relationship of the reference points of the display panel 200 with respect to the reference points of the cover panel 300. The positional relationship can include a distance in the first direction X and / or the second direction Y.

[0218] Referring to Figure 12 and Figure 18The reference point of the first corner 300 CR1 of the cover panel 300 can include a corner portion of the notch having a pointed shape recessed toward the center of the cover panel 300. The corner portion of the notch can be disposed to overlap the reference line R' when viewed from the top. According to an embodiment of the disclosure, the reference point of the cover panel 300 can include an intersection of one side of the alignment notch AH extending in the first direction X and the other side thereof extending in the second direction Y. The reference point can be defined in the second corner 300 CR2, the third corner 300 CR3, and / or the fourth corner 300 CR4 of the cover panel 300 in substantially the same or similar manner as described above, respectively.

[0219] Referring to Figure 8 The reference point of the first corner CR1 of the display panel 200 can be one of the plurality of alignment marks AM. The alignment marks AM can be those of the alignment marks AM overlapping the reference line R when viewed from the top. The reference lines R and R' can be substantially identical to each other. According to an embodiment of the disclosure, the reference point of the first corner CR1 of the display panel 200 can be the alignment mark AM positioned farthest from the alignment notch AH. Referring to Figure 8 and Figure 12 The reference point of the first corner CR1 of the display panel 200 can be the alignment mark AM positioned farthest from one side of the alignment notch AH extending in the first direction X and the other side of the alignment notch AH extending in the second direction Y. The reference point can be defined in the second corner CR2, the third corner CR3, and / or the fourth corner CR4 of the display panel 200 in substantially the same or similar manner as described above, respectively.

[0220] The determination as to whether the display panel 200 and the cover panel 300 are located at the correct positions can be made using a virtual figure defined by the alignment notches AH and the alignment marks AM. The virtual figure can be derived from the above-described reference points. Specifically, the four reference points of the cover panel 300 can be defined by the four alignment notches AH defined at the four corners of the cover panel 300, respectively. A virtual first rectangle can be defined by using the four reference points of the cover panel 300. In addition, the four reference points of the display panel 200 can be defined by the four alignment marks AM arranged at the four corners of the display panel 200, respectively. A virtual second rectangle can be defined by using the four reference points of the display panel 200. The controller can determine whether the display panel 200 and the cover panel 300 are aligned using the size, distance, and / or positional relationship of the first rectangle and the second rectangle. In some embodiments, less than four reference points can be defined in each of the cover panel 300 and the display panel 200. If it is determined that the display panel 200 and / or the cover panel 300 are not located at the correct positions, the positions of the display panel 200 and / or the cover panel 300 can be aligned. For example, the positions of the display panel 200, the cover panel 300, and / or an element (a table or a workbench, etc.) on which they are mounted can be adjusted.

[0221] If it is determined that the display panel 200 and / or the cover panel 300 are located at the correct positions, the display panel 200 and / or the cover panel 300 can be moved to a position for assembly. According to embodiments of the present disclosure, the cover panel 300 can be moved. However, it should be understood that the present disclosure is not limited thereto. For example, the cover panel 300 can be attached to the display panel 200 by pressing in the order of the front surface 310, the side surface 320, and the corners of the cover panel 300. The step of pressing the corners can be omitted.

[0222] Figure 26 FIG. 10 is a view illustrating a method for manufacturing a display apparatus according to another embodiment of the present disclosure. Figure 27 Figure 26 is a plan view of a portion E of FIG. 10.

[0223] Figure 26 The embodiment of FIG. 10 is different from the embodiment of FIG. 9 in that the alignment marks AM' of the cover window 100 are recognized instead of the alignment marks AM of the display panel 200. Figure 23

[0224] Referring to FIG. 11, Figure 26 and Figure 27 ​​The method for manufacturing a display device can further include, after the display panel 200 and the cover panel 300 are prepared, identifying a virtual alignment mark AM' defined by a virtual extension line of the cover window 100 having the display panel 200 attached thereto. The cover window 100 can include a front surface 110 and a plurality of side surfaces 120 connected to the front surface 110 and curved in a thickness direction.

[0225] According to embodiments of the disclosure, the virtual alignment mark AM' of the cover window 100 can be identified instead of the alignment mark AM of the display panel 200. In some embodiments, the virtual alignment mark AM' of the cover window 100 can be identified together with the alignment mark AM of the display panel 200. According to embodiments of the disclosure, four virtual alignment marks AM' can be identified adjacent to four corners of the cover window 100, respectively. In some embodiments, only two virtual alignment marks AM' can be identified.

[0226] Referring to Figure 26 The virtual alignment mark AM' can be defined by a virtual extension line of the cover window 100. For example, the virtual alignment mark AM' can be obtained by image processing performed by the controller based on an outer line of the cover window 100 photographed by the camera VC.

[0227] According to embodiments of the disclosure, the virtual alignment mark AM' can be defined by a virtual extension line of a side surface 120 of the cover window 100 identified on a plane. The virtual alignment mark AM' can include an intersection of a first virtual line and a second virtual line. The first virtual line can be a virtual line extending from an outer line of a first side surface 120_1 of the cover window 100 and can overlap the outer line of the first side surface 120_1 in a thickness direction when viewed from the top. The second virtual line can be a virtual line extending from an outer line of a second side surface 120_2 of the cover window 100 and can overlap the outer line of the second side surface 120_2 in a thickness direction when viewed from the top.

[0228] After the virtual alignment mark AM' and the alignment notch AH are identified, it can be determined whether the cover window 100, the display panel 200 attached thereto, and / or the cover panel 300 are located at a correct position for assembly.

[0229] It can be possible to Figure 23The method of determining whether the cover window 100 and the cover panel 300 are aligned is similar to that used in the implementation. Specifically, the controller can set multiple reference points in each of the cover window 100 and the cover panel 300 based on image data of captured virtual alignment marks AM' and alignment notches AH. The multiple reference points of the cover window 100 may include multiple virtual alignment marks AM'. The controller can derive virtual maps associated with the cover window 100 and the cover panel 300 respectively based on the multiple reference points. Then, the positional relationship of the virtual maps can be used to determine whether the cover window 100 and the cover panel 300 are correctly aligned. If it is determined that the cover window 100, the display panel 200 and / or the cover panel 300 are not in the correct position, the positions of the cover window 100, the display panel 200 and / or the cover panel 300 can be aligned.

[0230] If it is determined that the cover window 100, display panel 200 and / or cover panel 300 are in the correct position, the cover window 100, display panel 200 and / or cover panel 300 can be moved to the position for assembly.

[0231] Figure 28 This is a view illustrating a method for manufacturing a display device according to yet another embodiment of the present disclosure.

[0232] Figure 28 Implementation methods and Figure 23 The difference in the implementation is that the cover panel 300 can be aligned based on the alignment hole FH.

[0233] Reference Figure 28 The method for manufacturing a display device may further include identifying alignment holes FH defined in the front surface 310 of the cover panel 300 after preparing the display panel 200 and the cover panel 300. Figure 23 or Figure 26 The implementation methods differ, and the method according to this embodiment may include aligning the cover panel 300 using alignment notches AH and alignment holes FH defined at at least three points.

[0234] Can be with Figure 23 The method of determining whether the display panel 200 and the cover panel 300 are aligned is similar to that used in the implementation. Specifically, the controller can set multiple reference points in each of the display panel 200 and the cover panel 300 based on captured image data of the alignment mark AM, alignment hole FH, and alignment notch AH. The controller can derive virtual maps associated with the display panel 200 and the cover panel 300 respectively based on the multiple reference points. Then, the positional relationship of the virtual maps can be used to determine whether the display panel 200 and the cover panel 300 are correctly aligned. In some implementations, a virtual alignment mark AM' can be used.

[0235] In closing the detailed description, it is understood that various alterations and modifications will become apparent to the practitioner having the benefit of the teachings of the present application. Accordingly, the disclosed preferred embodiments are to be considered as illustrative only of the principles of the application and are intended to include all such variations and modifications without departing from the spirit and scope of the true invention as defined by the following claims.

Claims

1. A display apparatus comprising: a display panel including a display area and a non-display area surrounding the display area; and a cover panel disposed on a rear surface of the display panel and including a front surface, a first side surface connected to the front surface and curved along a first curved line, a second side surface connected to the front surface and curved along a second curved line intersecting the first curved line, and a first corner between the first side surface and the second side surface, wherein an alignment notch is defined at an outer end of the first corner of the cover panel in a plan view, and the display panel covers the entire alignment notch in the plan view. The alignment notch is defined to overlap the non-display area of the display panel in a thickness direction.

2. The display device according to claim 1, wherein The cover panel further includes an alignment hole defined in the front surface.

3. The display device according to claim 2, wherein The display panel further includes an alignment mark disposed in the non-display area.

4. The display device according to claim 2, wherein The cover panel is smaller than the display panel, and wherein an edge of the cover panel is disposed to overlap the non-display area of the display panel in a plan view.

5. The display device of claim 4, wherein, The edge of the cover panel is further disposed inside the display panel than the alignment mark in the plan view.

6. The display device of claim 5, wherein, A size of the alignment mark is smaller than a size of the alignment notch in the plan view.

7. The display device according to claim 4, wherein The alignment mark is disposed at a corner of the display panel.

8. The display device according to claim 4, wherein The alignment notch is defined to span the first curved line and the second curved line.

9. The display device according to claim 1, wherein The alignment notch is defined in a central area of the first corner of the cover panel.

10. The display device according to claim 1, wherein The central area of the first corner includes a corner of the front surface of the cover panel.

11. The display device of claim 10, wherein, The alignment notch is curved in a thickness direction.

12. The display device according to claim 1, wherein The first corner includes a first multi-curvature portion bent with two or more curvatures, and wherein the alignment notch is defined at the first multi-curvature portion.

13. The display device of claim 1, wherein, The first corner includes a first cut line disposed between the first side surface and the first multi-curvature portion and a second cut line disposed between the second side surface and the first multi-curvature portion, and wherein the alignment notch is defined between the first cut line and the second cut line.

14. The display device of claim 13, wherein, The cover panel further includes a polymer film layer, a buffer member, and a heat dissipation member sequentially stacked on the rear surface of the display panel.

15. The display device of claim 1, wherein, The cover panel further includes a first coupling member disposed between the display panel and the polymer film layer, a second coupling member disposed between the polymer film layer and the buffer member, and a third coupling member disposed between the buffer member and the heat dissipation member.

16. The display device of claim 15, wherein, The cover panel further includes a third side surface connected to the front surface and curved along a third curved line and a fourth side surface connected to the front surface and curved along a fourth curved line.

17. The display device of claim 1, wherein, 18.A method of manufacturing a display apparatus, comprising: ​ manufacturing a cover panel comprising a front surface, a first side surface connected to the front surface and curved along a first curved line, a second side surface connected to the front surface and curved along a second curved line intersecting the first curved line; identifying, by a detector, an alignment notch defined at an outer end of a first corner of the cover panel between the first side surface and the second side surface of the cover panel; aligning the cover panel; and assembling the cover panel and a display panel, wherein, in plan view, the display panel covers the entire alignment notch.

19. The method of claim 18, further comprising: identifying, by the detector, an alignment mark arranged at a corner of the display panel after manufacturing the cover panel.

20. The method of claim 18, further comprising: identifying, by the detector, a virtual alignment mark defined by a virtual extension line of a cover window after manufacturing the cover panel, the display panel having been attached to the cover window.

21. The method of claim 18, further comprising: identifying, by the detector, an alignment hole defined in the front surface of the cover panel after manufacturing the cover panel.

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