Display device and method of manufacturing the same

Abstract

A display device and a method for manufacturing the display device are provided. The display device includes: a display area and a non-display area surrounding the display area; a first bending line, at least a portion of which extends in a first direction in the display area; a first area located on one side of the first bending line; a second area located on the other side of the first bending line and bent from the first area in one direction; a first alignment mark disposed in the first area and having a first area; and a second alignment mark disposed in the second area to face the first alignment mark across the first bending line and having a second area different from the first area.

Description

Technical Field

[0001] The present disclosure relates to a display device and a method for manufacturing the display device. Background Art

[0002] Electronic devices such as smartphones, tablet PCs, digital cameras, notebook computers, navigation devices, and smart TVs that provide images to users include display devices for displaying images. The display device includes a display panel that creates and displays images and various input devices.

[0003] Among display devices, an organic light emitting display device displays an image using an organic light emitting element that generates light via recombination between electrons and holes. The organic light emitting display device has a fast response speed, high brightness, a large viewing angle, and operates with low power consumption.

[0004] A display device generally displays images only on its front side. However, recently, a display device that also displays images on its side has been developed. Summary of the invention

[0005] Technical issues

[0006] Aspects of the present disclosure provide a display device including an alignment mark disposed on a side surface in a display region of a display panel.

[0007] Aspects of the present disclosure also provide a method for manufacturing a display device including a plurality of alignment marks and having a curved portion in a display region thereof.

[0008] It should be noted that aspects of the present disclosure are not limited thereto, and other aspects not mentioned herein will be apparent to those of ordinary skill in the art from the following description.

[0009] Technical Solution

[0010] According to an embodiment of the present disclosure, a display device includes: a display area and a non-display area surrounding the display area; a first bending line having at least a portion extending in a first direction and in the display area; a first area located at one side around the first bending line; a second area located at an opposite side around the first bending line, wherein the second area is bent in one direction relative to the first area and from the first bending line; a first alignment mark arranged in the first area and having a first area; and a second alignment mark arranged in the second area and facing the first alignment mark, while the first bending line is arranged between the first alignment mark and the second alignment mark, wherein the second alignment mark has a second area different from the first area.

[0011] The display area may include: a first display area, which is arranged in the first area around a first bending line; and a second display area, which is arranged in the second area around the first bending line, wherein the first alignment mark may be arranged in the first display area and the second alignment mark may be arranged in the second display area.

[0012] A first side of the first alignment mark and a second side of the second alignment mark may contact each other at the first bending line, wherein the second area may be greater than the first area.

[0013] A first second direction dimension of the first alignment mark measured in a second direction perpendicular to the first direction may be smaller than a second second direction dimension of the second alignment mark measured in the second direction.

[0014] A first first-direction dimension of the first alignment mark measured in the first direction may be smaller than a second first-direction dimension of the second alignment mark measured in the first direction.

[0015] A reference plane can be defined which is parallel to the first region and separated from the first region in a third direction bent from the second region, wherein a size of a first orthogonal projection area of ​​the first alignment mark projected onto the reference plane in the third direction can be the same as a size of a second orthogonal projection area of ​​the second alignment mark projected onto the reference plane in the third direction.

[0016] The display device may further include a third alignment mark that is spaced apart from the first alignment mark and faces the first alignment mark, with the first bending line disposed between the third alignment mark and the first alignment mark, and the third alignment mark disposed in the second region and having a third area larger than the second area.

[0017] A size of a third orthogonal projection area of ​​the third alignment mark projected onto the reference plane in the third direction may be the same as a size of each of the first orthogonal projection area and the second orthogonal projection area.

[0018] The display device may further include: a second bending line extending in a second direction perpendicular to the first direction, the second bending line intersecting the first bending line, and the first area being arranged at one side around the second bending line; and a third area being located at an opposite side around the second bending line, the third area being relative to the first area and bent in one direction from the second bending line, wherein the display area may further include a third display area in the third area being arranged around the second bending line.

[0019] The display device may further include: a fourth alignment mark, arranged in the first region and having a fourth area; and a fifth alignment mark, arranged in the third region and facing the fourth alignment mark, while the second bending line is arranged between the fourth alignment mark and the fifth alignment mark, and the fifth alignment mark has a fifth area different from the fourth area.

[0020] The non-display area may include: a first non-display area extending in a first direction, arranged in the second area, and located on one side of the second display area; a second non-display area extending in the second direction, arranged in the third area, and located on one side of the third display area; and a third non-display area located in an area where the first non-display area and the second non-display area intersect each other, wherein a bending intersection point serving as an intersection point between the first bending line and the second bending line may be set at a boundary between the third non-display area and the first display area.

[0021] The display device may also include: a sixth alignment mark, arranged in the first region, having a sixth area, and having a sixth side in contact with the bending intersection; and a seventh alignment mark, arranged in the third non-display region and facing the sixth alignment mark, while the bending intersection is arranged between the sixth alignment mark and the seventh alignment mark, and the seventh alignment mark has a seventh area different from the sixth area.

[0022] The display device may further include an eighth alignment mark spaced apart from the first and second bending lines and disposed in the third non-display region, the eighth alignment mark having an eighth area greater than the seventh area.

[0023] According to an embodiment of the present disclosure, a display device includes: a first bending line extending in a first direction; a second bending line extending in a second direction perpendicular to the first direction and intersecting with the first bending line; a first area surrounded by the first bending line and the second bending line; a second area bent from the first bending line; a third area bent from the second bending line; a fourth area, where the second area and the third area intersect with each other; at least one first alignment mark arranged in the first area and having a first area; and a second alignment mark arranged in at least one of the second area, the third area and the fourth area and having a second area larger than the first area, wherein the second alignment mark faces the first alignment mark.

[0024] The first alignment mark and the second alignment mark disposed in the second region may contact each other at the first bending line, wherein the first alignment mark and the second alignment mark disposed in the third region may contact each other at the second bending line.

[0025] The second alignment mark disposed in the fourth region may be spaced apart from each of the first and second bending lines.

[0026] According to an embodiment of the present disclosure, a method for manufacturing a display device includes: providing a display panel, the display panel including a first bending line extending in a first direction, a first alignment mark arranged at one side around the first bending line, and a second alignment mark arranged at an opposite side around the first bending line and facing the first alignment mark; bending the opposite side portion of the display panel around the first bending line in a second direction perpendicular to the first direction; and joining a cover window to the display panel to cover the display panel.

[0027] Bending the display panel may include: defining a reference plane, which is parallel to a surface of the display panel arranged on one side around a first bending line and is spaced apart from the surface in a second direction; measuring the size of a first orthogonal projection area of ​​a first alignment mark projected onto the reference plane and the size of a second orthogonal projection area of ​​a second alignment mark projected onto the reference plane; and comparing the first orthogonal projection area with the second orthogonal projection area.

[0028] In the display panel that is bent when the display panel is bent, a size of the first orthogonal projection area and a size of the second orthogonal projection area may be equal to each other.

[0029] The display panel may further include: a second bending line extending in a third direction perpendicular to both the first direction and the second direction; a third alignment mark arranged at one side around the second bending line; and a fourth alignment mark arranged at an opposite side around the second bending line, wherein bending the display panel may include: bending the opposite side portion of the display panel around the second bending line until a size of a third orthogonal projection area of ​​the third alignment mark projected onto the reference plane is equal to a size of a fourth orthogonal projection area of ​​the fourth alignment mark projected onto the reference plane.

[0030] Details of other implementations are included in the detailed description and accompanying drawings.

[0031] Beneficial Effects

[0032] A display device according to an embodiment may include a first alignment mark and a second alignment mark having different sizes with a bending line disposed therebetween. The first alignment mark may be disposed in a non-bending region of the display device, and the second alignment mark may be disposed in a bending region of the display device. When the display device or the display panel is bent in a bending direction, the size of the area of ​​the second alignment mark when viewed in the bending direction may change.

[0033] Therefore, according to a method for manufacturing a display device in accordance with one embodiment, the degree of bending of the display device or display panel can be calculated based on the measurement result of the size change of the area (i.e., the orthogonal projection area) of the second alignment mark observed in the bending direction. Alternatively, when the size of the second alignment mark can be designed so that when the display device or display panel is bent at a predetermined bending angle, the size of the orthogonal projection area of ​​the first alignment mark and the size of the orthogonal projection area of ​​the second alignment mark are equal to each other. Therefore, during the manufacturing process of the display device, the orthogonal projection area of ​​the second alignment mark can be compared with the orthogonal projection area of ​​the first alignment mark. Therefore, the display device can be bent based on the comparison result to reach a predetermined bending angle.

[0034] The effects according to the embodiments are not limited to the above-exemplified contents, and more various effects are included in the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a perspective view of a display device according to an embodiment.

[0036] Figure 2 yes Figure 1 An exploded perspective view of a display device.

[0037] Figure 3 is a plan view showing a display panel according to one embodiment.

[0038] Figure 4 is along Figure 3 A cross-sectional view taken along line IV-IV'.

[0039] Figure 5 It is shown Figure 3 Schematic diagram of the Q1 portion when the display panel is in a non-bent state.

[0040] Figure 6 is along Figure 5 A cross-sectional view taken along line VI-VI'.

[0041] Figure 7 It is shown Figure 5 Floor plan of the Q2 section.

[0042] Figure 8 It is shown Figure 3 Schematic diagram of the Q1 portion when the display panel is in a bent state.

[0043] Fig. 9 is along Figure 8 A cross-sectional view taken along line IX-IX'.

[0044] Fig.10 It is shown Figure 8Floor plan of the Q3 section.

[0045] Fig.11 is a cross-sectional view schematically illustrating a bending area of ​​a display device according to an embodiment.

[0046] Fig.12 is a flowchart illustrating a method for manufacturing a display device according to one embodiment.

[0047] Figures 13 to 15 is a cross-sectional view illustrating a method for manufacturing a display device according to one embodiment.

[0048] Fig.16 and Fig.17 is a plan view showing a first alignment mark and a second alignment mark according to another embodiment.

[0049] Fig.18 is a plan view showing an alignment mark according to another embodiment.

[0050] Fig.19 is an enlarged view showing a portion of a display panel according to another embodiment.

[0051] Fig. 20 It is shown Fig.19 A plan view of the Q4 portion of the display panel in a non-bent state.

[0052] Fig.21 It is shown Fig.19 A plan view of the Q4 portion of the display panel in a bent state.

[0053] Fig. 22 and Fig.23 is an enlarged view showing a portion of a display panel according to still another embodiment. DETAILED DESCRIPTION

[0054] The present invention will be described more fully below with reference to the accompanying drawings, in which preferred embodiments of the present invention are shown. However, the present invention may be implemented in different forms and should not be construed as being limited to the embodiments set forth herein. Instead, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the scope of the present invention to those skilled in the art.

[0055] It will also be understood that when a layer is referred to as being 'on' another layer or substrate, it can be directly on the other layer or substrate, or intervening layers may also be present. Throughout the specification, the same reference numerals refer to the same components.

[0056] It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, without departing from the teachings of the present invention, the first element discussed below may be referred to as the second element. Similarly, the second element may also be referred to as the first element.

[0057] Hereinafter, embodiments will be described with reference to the accompanying drawings.

[0058] Figure 1 is a perspective view of a display device according to an embodiment. Figure 2 yes Figure 1 An exploded perspective view of a display device.

[0059] The display device 10 may refer to any electronic device that provides a display screen. For example, the display device 10 may include a portable electronic device that provides a display screen (such as a mobile phone, a smart phone, a tablet PC (personal computer), an electronic watch, a smart watch, a watch phone, a mobile communication terminal, an electronic notebook, an electronic book, a PMP (portable multimedia player), a navigation device, a game console, a digital camera, etc.) and a television that provides a display screen, a laptop computer, a monitor, a billboard, an Internet of Things device, etc.

[0060] refer to Figure 1 and Figure 2 , a display device 10 according to one embodiment includes a cover window 100 and a display panel 300 .

[0061] As used herein, the terms "upper", "top", and "upper surface" refer to a direction in which the cover window 100 is disposed on the display panel 300 in the thickness direction of the display panel 300 (i.e., the third direction DR3), wherein the terms "lower", "bottom", and "lower surface" refer to a direction opposite to the third direction DR3 in the thickness direction of the display panel 300. In addition, the terms "left", "right", "upper", and "lower" refer to directions in a plan view of the display panel 300. For example, "left" refers to a direction opposite to the first direction DR1, "right" refers to the first direction DR1, "upper" refers to the second direction DR2, and "lower" refers to a direction opposite to the second direction DR2.

[0062] The display device 10 may be formed in a rectangular planar shape. For example, the display device 10 may have a rectangular planar shape having short sides extending in the first direction DR1 and long sides extending in the second direction DR2, such as Figure 1The corners where the short sides extending in the first direction DR1 and the long sides extending in the second direction DR2 meet each other may be rounded to have a predetermined curvature, or may be formed at a right angle. The planar shape of the display device 10 is not limited to a rectangle, and may be other polygons, a circle, or an ellipse.

[0063] The display device 10 may include a flat first area DS1, a second area DS2 extending from each of the left and right sides of the first area DS1, and a third area DS3 extending from each of the upper and lower sides of the first area DS1. Each of the second area DS2 and the third area DS3 may be formed to be flat or curved. When each of the second area DS2 and the third area DS3 is formed to be flat, each of the angles between the first area DS1 and the second area DS2 and the angles between the first area DS1 and the third area DS3 may be an obtuse angle. When each of the second area DS2 and the third area DS3 is formed to be curved, each of the second area DS2 and the third area DS3 may have a constant curvature or a varying curvature. The accompanying drawings show that the second area DS2 on each of the left and right sides of the first area DS1 and the third area DS3 on each of the upper and lower sides of the first area DS1 are formed to be curved relative to the first area DS1 of the display device 10. The present disclosure is not limited thereto.

[0064] The cover window 100 may be disposed on the display panel 300 to cover the top surface of the display panel 300. Therefore, the cover window 100 may play a role in protecting the top surface of the display panel 300. The cover window 100 may be attached to the top surface of the display panel 300 via an adhesive member. The cover window 100 may be made of glass, sapphire and / or plastic. The cover window 100 may be rigid or flexible. The adhesive member may be implemented as an optically transparent adhesive film (OCA) or an optically transparent resin (OCR).

[0065] The cover window 100 may include a light-transmitting portion DA100 corresponding to the display area DA of the display panel 300 and a light-blocking portion NDA100 corresponding to the non-display area NDA of the display panel 300 and an area of ​​the display device 10 other than the area of ​​the display panel 300. The light-transmitting portion DA100 may be disposed in a portion of each of the second area DS2 and the third area DS3 and the first area DS1. The light-blocking portion NDA100 may be disposed outside the second area DS2 and the third area DS3 and may be opaque.

[0066] The cover window 100 may include a base substrate 110 and a printed layer 130 disposed on one face of the base substrate 110 .

[0067] The base substrate 110 may be made of a transparent material. The base substrate 110 may be made of, for example, glass or plastic. When the base substrate 110 includes plastic, the base substrate 110 may have a flexible property.

[0068] Examples of plastics suitable for base substrate 110 may include, but are not limited to, polyimide, polyacrylate, polymethyl methacrylate (PMMA), polycarbonate (PC), polyethylene naphthalate (PEN), polyvinylidene chloride, polyvinylidene fluoride (PVDF), polystyrene, ethylene vinyl alcohol copolymer, polyethersulfone (PES), polyetherimide (PEI), polyphenylene sulfide (PPS), polyallyl compound, triacetyl cellulose (TAC) and cellulose acetate propionate (CAP). The plastic window may be made of at least one of the plastic materials listed above. When base substrate 110 includes plastic, a coating (not shown) may be provided on the top and bottom surfaces of the plastic. In one embodiment, the coating may include an organic layer including an acrylate compound and / or a hard coating layer including an organic composite layer.

[0069] The planar shape of the base substrate 110 may be substantially the same as the planar shape of the display device 10 including the base substrate 110. For example, when the display device 10 has a rectangular shape in a plan view, the base substrate 110 has a substantially rectangular shape in a plan view. In another example, when the display device 10 is circular, the base substrate 110 may have a circular shape.

[0070] In a plan view, the base substrate 110 may be larger than the display panel 300, so that a side of the base substrate 110 may protrude outward beyond a side of the display panel 300. The base substrate 110 may protrude outward beyond each of the side surfaces of the display panel 300. Therefore, when the cover window 100 and the display panel 300 are bonded to each other, the cover window 100 may cover an outer side surface of the display panel 300.

[0071] The printing layer 130 may be disposed on one surface of the base substrate 110 (i.e., the bottom surface of the base substrate 110 facing the display panel 300). The printing layer 130 may be disposed on the edge of the base substrate 110 and may be used as a light blocking portion NDA100 of the display device 10. The printing layer 130 may be used as a decorative layer imparting an aesthetic feeling and / or an outermost black matrix layer.

[0072] The display panel 300 may be disposed on the bottom surface of the cover window 100. The display panel 300 includes a display area DA that displays an image and a non-display area NDA surrounding the display area DA. The display area DA of the display panel 300 may be disposed to overlap with the light-transmitting portion DA100 of the cover window 100, and the non-display area NDA may be disposed to overlap with the light-blocking portion NDA100 of the cover window 100. That is, the display area DA may be disposed in a portion of each of the second area DS2 and the third area DS3 and the first area DS1, and the non-display area NDA may be disposed in a portion of each of the second area DS2 and the third area DS3. Therefore, images from the display panel 300 may be displayed not only from the first area DS1, but also from the second area DS2 and the third area DS3.

[0073] Although not shown in the drawings, a polarizing film may be attached between the display panel 300 and the cover window 100 to prevent degradation of visibility due to reflection of external light. The polarizing film may include at least one of a λ / 2 plate (half-wave plate) and a λ / 4 plate (quarter-wave plate).

[0074] Examples of the display panel 300 may include an organic light-emitting display panel, a micro-LED display panel, a nano-LED display panel, a quantum dot light-emitting display panel, a liquid crystal display panel, a plasma display panel, a field emission display panel, an electrophoretic display panel, an electrowetting display panel, etc. Hereinafter, an example of implementing the display panel 300 as an organic light-emitting display panel will be described. The present disclosure is not limited thereto. The display panel 300 may be implemented as other display panels as long as the same technical concept can be applied to other display panels.

[0075] Figure 3 is a plan view showing a display panel according to one embodiment. Figure 4 is along Figure 3 A cross-sectional view taken along line IV-IV'.

[0076] refer to Figure 3 and Figure 4 , the display panel 300 may include a plurality of pixels PX. The plurality of pixels PX may be arranged in a matrix form. In a plan view, the shape of each pixel PX may be a rectangle or a square, but is not limited thereto. The pixel PX may have a rhombus shape in which each side is inclined relative to the first direction DR1. Each pixel PX may include a light-emitting area. Each light-emitting area may have the same shape as the shape of the pixel PX. Alternatively, each light-emitting area may have a shape different from the shape of the pixel PX. In an example, when the shape of the pixel PX is a rectangular shape, the shape of the light-emitting area of ​​the pixel PX may have various shapes, such as a rectangle, a rhombus, a hexagon, an octagon, and a circle.

[0077] According to one embodiment, the display panel 300 includes a plurality of bending lines BL1, BL2, BL3, and BL4. Each of the sides of the display panel 300 may be bent from each of the bending lines BL1, BL2, BL3, and BL4 to form a curved surface, but may be bent at a right angle. That is, the display panel 300 may include a first area DS1 having a flat surface as in the display device 10 or the cover window 100, and a second area DS2 and a third area DS3 as curved areas extending from the left and right sides and the upper and lower sides of the first area DS1, respectively. The first area DS1 may be a flat area located on one side of each of the bending lines BL1, BL2, BL3, and BL4, and each of the second area DS2 and the third area DS3 may be a curved area located on the opposite side of each of the bending lines BL1, BL2, BL3, and BL4.

[0078] The display panel 300 according to one embodiment may include a first area DS1 as a flat area (which is not bent from each of a plurality of bending lines BL1, BL2, BL3, and BL4) and a second area DS2 and a third area DS3, for example, bent downward from the first area DS1. Each of the second area DS2 and the third area DS3 of the display panel 300 may have a curved surface bent from each of the plurality of bending lines BL1, BL2, BL3, and BL4, or may be bent at a right angle to each of the plurality of bending lines BL1, BL2, BL3, and BL4. The first area DS1 may be surrounded by the plurality of bending lines BL1, BL2, BL3, and BL4 and have a flat surface. Figure 3 The display panel 300 shown in FIG. 1 is in a state where one side of the display panel 300 is not bent from each of the bending lines BL1 , BL2 , BL3 , and BL4 .

[0079] The first bending line BL1 may be located at opposite sides of the display panel 300 in the first direction DR1 and may extend in the second direction DR2. The second bending line BL2 may be located at one side of the display panel 300 in the first direction DR1 and may extend in the second direction DR2. The third bending line BL3 may be located at one side of the display panel 300 in the second direction DR2 and may extend in the first direction DR1. The fourth bending line BL4 may be located at opposite sides of the display panel 300 in the second direction DR2 and may extend in the first direction DR1. The first bending line BL1 and the second bending line BL2 may extend in parallel with each other, and the third bending line BL3 and the fourth bending line BL4 may extend in parallel with each other. The first bending line BL1 and the second bending line BL2 may intersect with the third bending line BL3 and the fourth bending line BL4, respectively. In an example, the first bending line BL1 and the second bending line BL2 may extend in a manner perpendicular to the third bending line BL3 and the fourth bending line BL4, respectively. The present disclosure is not limited thereto.

[0080] The bending lines BL1, BL2, BL3, and BL4 may intersect with each other to define an intersection point. For example, the first bending line BL1 and the third bending line BL3 may intersect with each other at a first bending intersection point DBP1, which is adjacent to a corner defined by the opposite side in the first direction DR1 of the display panel 300 and the side in the second direction DR2 of the display panel 300. The second bending line BL2 and the third bending line BL3 may intersect with each other at a second bending intersection point DBP2, which is adjacent to a corner defined between the side in the first direction DR1 and the side in the second direction DR2 of the display panel 300. In addition, the first bending line BL1 and the fourth bending line BL4 may intersect with each other at a third bending intersection point DBP3, which is adjacent to a corner defined between the opposite side in the first direction DR1 of the display panel 300 and the opposite side in the second direction DR2 of the display panel 300. The second and fourth bending lines BL2 and BL4 may intersect each other at a fourth bending intersection DBP4 adjacent to a corner defined by one side of the display panel 300 in the first direction DR1 and an opposite side of the display panel 300 in the second direction DR2 .

[0081] According to one embodiment, the bending intersections DBP1, DBP2, DBP3, and DBP4 may be located in the display panel 300. The bending intersections DBP1, DBP2, DBP3, and DBP4 may be located at a boundary between the display area DA and the non-display area NDA of the display panel 300. The present disclosure is not limited thereto. In some cases, the bending intersections DBP1, DBP2, DBP3, and DBP4 may be located within the display area DA or the non-display area NDA.

[0082] Each of the bending lines BL1, BL2, BL3, and BL4 may divide the display area DA and each of the non-display area NDA into a plurality of sub-areas. The bending lines BL1, BL2, BL3, and BL4 may divide the display area DA into first to fifth display areas DA1 to DA5. The bending lines BL1, BL2, BL3, and BL4 may divide the non-display area NDA into first to eighth non-display areas NDA1 to NDA8. The fifth display area DA5 may be located in the flat first area DS1 of the display panel 300. The first display area DA1, the second display area DA2, the third display area DA3, and the fourth display area DA4 may be located in the second area DS2 and the third area DS3. The first non-display area NDA1, the second non-display area NDA2, the third non-display area NDA3, the fourth non-display area NDA4, the fifth non-display area NDA5, the sixth non-display area NDA6, the seventh non-display area NDA7, and the eighth non-display area NDA8 may be located in the second area DS2 and the third area DS3.

[0083] The fifth display area DA5 may be surrounded by the bending lines BL1, BL2, BL3 and BL4, and may be located in the inner area of ​​the display panel 300. The first display area DA1 may be located at the left side around the first bending line BL1, and may be located adjacent to the fifth display area DA5, while the first bending line BL1 may serve as a boundary between the first display area DA1 and the fifth display area DA5. The second display area DA2 may be located at the right side around the second bending line BL2, and may be located adjacent to the fifth display area DA5, while the second bending line BL2 may serve as a boundary between the second display area DA2 and the fifth display area DA5. The third display area DA3 may be located at the upper side around the third bending line BL3, and adjacent to the fifth display area DA5, while the third bending line BL3 may serve as a boundary between the third display area DA3 and the fifth display area DA5. The fourth display area DA4 may be located at the lower side around the fourth bending line BL4, and may be located adjacent to the fifth display area DA5, while the fourth bending line BL4 may serve as a boundary between the fourth display area DA4 and the fifth display area DA5.

[0084] The first non-display area NDA1, the second non-display area NDA2, the third non-display area NDA3 and the fourth non-display area NDA4 are located at the upper side, the lower side, the left side and the right side of the display panel 300, and the fifth non-display area NDA5, the sixth non-display area NDA6, the seventh non-display area NDA7 and the eighth non-display area NDA8 are located at the curved corners of the display panel 300.

[0085] The first non-display area NDA1 may be located on an opposite side in the first direction DR1 of the first display area DA1 and may be spaced apart from the fifth display area DA5, while the first display area DA1 may be interposed between the first non-display area NDA1 and the fifth display area DA5. The second non-display area NDA2 may be located on one side in the first direction DR1 of the second display area DA2 and may be spaced apart from the fifth display area DA5, while the second display area DA2 may be interposed between the second non-display area NDA2 and the fifth display area DA5. In addition, the third non-display area NDA3 may be located on one side in the second direction DR2 of the third display area DA3 and may be spaced apart from the fifth display area DA5, while the third display area DA3 may be interposed between the third non-display area NDA3 and the fifth display area DA5. The fourth non-display area NDA4 may be located on an opposite side in the second direction DR2 of the fourth display area DA4 and may be spaced apart from the fifth display area DA5, while the fourth display area DA4 may be interposed between the fourth non-display area NDA4 and the fifth display area DA5.

[0086] The fifth non-display area NDA5 may be located at an upper left corner where the first non-display area NDA1 and the third non-display area NDA3 of the display panel 300 meet each other. The sixth non-display area NDA6 may be located at an upper right corner where the third non-display area NDA3 and the second non-display area NDA2 of the display panel 300 meet each other. The seventh non-display area NDA7 may be located at a lower left corner where the first non-display area NDA1 and the fourth non-display area NDA4 of the display panel 300 meet each other. The eighth non-display area NDA8 is located at a lower right corner where the fourth non-display area NDA4 and the second non-display area NDA2 of the display panel 300 meet each other.

[0087] In one example, as described above, the display device 10 according to one embodiment may include a flat first area DS1, a curved or bent second area DS2, and a curved or bent third area DS3. Each of the cover window 100 and the display panel 300 of the display device 10 may include a flat area corresponding to the first area DS1, a curved area corresponding to the second area DS2, and a curved area corresponding to the third area DS3 of the display device 10. The display panel 300 may include a fifth display area DA5, which is surrounded by the first bending line BL1, the second bending line BL2, the third bending line BL3, and the fourth bending line BL4 and is flat and corresponds to the first area DS1 of the display device 10. The display panel 300 may include other non-display areas NDA, the first display area DA1 and the second display area DA2 corresponding to the second area DS2, and the third display area DA3 and the fourth display area DA4 corresponding to the third area DS3. The first display area DA1 and the second display area DA2 and the third display area DA3 and the fourth display area DA4 may be bent downward from the first area DS1 or the fifth display area DA5 and along the first bending line BL1, the second bending line BL2, the third bending line BL3 and the fourth bending line BL4, respectively.

[0088] The display panel 300 can be manufactured in a state where the entire surface is flat. Then, each side portion can be bent to have a predetermined curvature along each of the first bending line BL1, the second bending line BL2, the third bending line BL3, and the fourth bending line BL4. Then, the display panel 300 can be interconnected with the cover window 100. Therefore, the display device 10 can be manufactured. The display panel 300 according to one embodiment includes a plurality of alignment marks 200 to measure the bending degree of each side of the display panel 300 and its alignment state with the cover window 100. During the bonding process between the display panel 300 and the cover window 100, the alignment mark 200 can be used to measure the change in the plane size of the display panel 300 when each of the sides of the display panel 300 is bent, and then calculate its bending degree based on the measurement.

[0089] The display panel 300 according to one embodiment may include a plurality of alignment marks 200 disposed in a first region DS1 as a flat region and a plurality of alignment marks 200 disposed in a second region DS2 or a third region DS3 as a curved region, which can be distinguished from each other based on bending lines BL1, BL2, BL3, and BL4. The alignment marks 200 may include a first alignment mark 210 disposed in the first region DS1 and a second alignment mark 220 disposed in the second region DS2, which can be distinguished from each other based on the first bending line BL1. In addition, the alignment marks 200 may include a third alignment mark 230 disposed in the first region DS1 and a fourth alignment mark 240 disposed in the third region DS3, which can be distinguished from each other based on the third bending line BL3.

[0090] Each of the first alignment mark 210, the second alignment mark 220, the third alignment mark 230, and the fourth alignment mark 240 may be disposed in the display area DA. The first alignment mark 210 and the third alignment mark 230 may be disposed in the flat first area DS1 and may extend inward from the first bending line BL1 and the third bending line BL3, respectively. The second alignment mark 220 and the fourth alignment mark 240 may be disposed in the curved second area DS2 and the third area DS3, respectively.

[0091] A plurality of first alignment marks 210 and a plurality of third alignment marks 230 may be disposed in a fifth display area DA5 corresponding to the first area DS1. A plurality of second alignment marks 220 and a plurality of fourth alignment marks 240 may be disposed in the first display area DA1, the second display area DA2, the third display area DA3, and the fourth display area DA4 corresponding to the second area DS2 and the third area DS3, respectively. At least one alignment mark 200 may be disposed at each side of the display panel 300 and corresponds to each of the bending lines BL1, BL2, BL3, and BL4. In the drawings, two first alignment marks 210 and two second alignment marks 220 are located at each of the left and right sides of the display panel 300, and two third alignment marks 230 and two fourth alignment marks 240 are located at each of the upper and lower sides of the display panel 300. Therefore, a total of 16 alignment marks 200 are arranged on the entire surface of the display panel 300. However, the present disclosure is not limited thereto. A lesser or greater number of alignment marks 200 may be disposed on the display panel 300. The alignment mark 200 provided in the display panel 300 will be described in more detail later with reference to other drawings.

[0092] In one example, although not shown, a pad area for receiving an external signal may be further provided on the lower short side of the display panel 300. The pad area may be located at the opposite side in the second direction DR2 of the fourth non-display area NDA4, which is located at the lower short side of the display panel 300. In the pad area, a signal line extending from the display area DA may be provided. The signal line may be electrically connected to an external signal terminal, for example, a lead of a printed circuit board when a film chip is applied, or a protrusion of a driver chip when a plastic chip is applied.

[0093] like Figure 4 As shown in , the display panel 300 may include a substrate 101 , a thin film transistor layer TFTL disposed on the substrate 101 , a light emitting element layer EML, a thin film encapsulation layer TFEL, and a touch sensor layer TSP.

[0094] The substrate 101 may be a rigid substrate, or a flexible substrate that can be bent, folded, rolled, etc. The substrate 101 may be made of an insulating material such as glass, quartz, or a polymer resin. Examples of polymer materials may include polyethersulfone (PES), polyacrylate (PA), polyarylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyallylate, polyimide (PI), polycarbonate (PC), cellulose triacetate (CAT), cellulose acetate propionate (CAP), or a combination thereof. The substrate 101 may include a metal material.

[0095] The thin film transistor layer TFTL may be disposed on the substrate 101. In the thin film transistor layer TFTL, not only a transistor for each pixel (eg, Figure 3 A thin film transistor (PX) of the thin film transistor can be formed, and a scan line, a data line, a power line, a scan control line, and a link line for connecting the pad and the data line to each other can be formed. Each of the thin film transistors may include a gate electrode, a semiconductor layer, a source electrode, and a drain electrode.

[0096] The thin film transistor layer TFTL may be disposed in the display area DA and the non-display area NDA. Specifically, a scan line, a data line, a power line, and a thin film transistor for each pixel of the thin film transistor layer TFTL may be disposed in the display area DA. A scan control line and a link line of the thin film transistor layer TFTL may be disposed in the non-display area NDA.

[0097] The light emitting element layer EML may be disposed on the thin film transistor layer TFTL. The light emitting element layer EML may include pixels, each pixel including a first electrode, a light emitting layer, and a second electrode, and may include a pixel defining layer defining the pixel. The light emitting layer may be implemented as an organic light emitting layer including an organic material. In this case, the light emitting layer may include a hole transport layer, an organic light emitting layer, and an electron transport layer. When a predetermined voltage may be applied to the first electrode and a cathode voltage is applied to the second electrode via the thin film transistor of the thin film transistor layer TFTL, holes and electrons move to the organic light emitting layer through the hole transport layer and the electron transport layer, respectively, and then combine with each other in the organic light emitting layer to emit light. The pixels of the light emitting element layer EML may be disposed in the display area DA.

[0098] The thin film encapsulation layer TFEL may be disposed on the light emitting element layer EML. The thin film encapsulation layer TFEL is used to prevent oxygen or moisture from invading the light emitting element layer EML. To this end, the thin film encapsulation layer TFEL may include at least one inorganic film. The inorganic film may include, but is not limited to, a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer. In addition, the thin film encapsulation layer TFEL is used to protect the light emitting element layer EML from foreign matter such as dust. To this end, the thin film encapsulation layer TFEL may include at least one organic film. The organic film may be made of acrylic resin, epoxy resin, phenolic resin, polyimide resin, etc. However, the present disclosure is not limited thereto.

[0099] The thin film encapsulation layer TFEL may be disposed in both the display area DA and the non-display area NDA. Specifically, the thin film encapsulation layer TFEL may be disposed to cover the light emitting element layer EML in each of the display area DA and the non-display area NDA, and to cover the thin film transistor layer TFTL in the non-display area NDA.

[0100] The touch sensor layer TSP may be disposed on the thin film encapsulation layer TFEL. Placing the touch sensor layer TSP directly on the thin film encapsulation layer TFEL may allow the thickness of the display device 10 to be reduced compared to a case where a separate touch panel including the touch sensor layer TSP is attached on the thin film encapsulation layer TFEL.

[0101] The touch sensor layer TSP may include a touch electrode for capacitively detecting a user's touch and a touch line for connecting the pad and the touch electrode to each other. For example, the touch sensor layer TSP may detect a user's touch using a self-capacitance scheme or a mutual-capacitance scheme.

[0102] A cover window (eg, Figure 2 In this case, the touch sensor layer TSP and the cover window may be connected to each other via a transparent adhesive member.

[0103] In one example, the display device 10 may include a plurality of alignment marks 200 disposed in the display panel 300. The alignment mark 200 may be disposed between the thin film transistor layer TFTL and the light emitting element layer EML. The present disclosure is not limited thereto. The alignment mark 200 may be disposed on the light emitting element layer EML or the thin film encapsulation layer TFEL. As shown in the accompanying drawings, the alignment mark 200 may include a first alignment mark 210 disposed in a fifth display area DA5 corresponding to the first area DS1 of the display area DA and a second alignment mark 220 disposed in each of the first display area DA1 and the second display area DA2 corresponding to the second area DS2. In an embodiment, the alignment mark 200 may include a plurality of stacked conductive patterns. However, the present disclosure is not limited thereto.

[0104] As described above, the display device 10 includes a flat first area DS1 and a curved or bent second area DS2 and a third area DS3. The display device 10 can be manufactured by bending each of the sides of the display panel 300 to have a predetermined curvature and performing a process of bonding the display panel 300 to the cover window 100. The display device 10 according to one embodiment includes an alignment mark 200 provided in the display panel 300, and the alignment mark 200 can be used to calculate the bending degree of each of the sides of the display panel 300 and to measure the alignment state between the display panel 300 and the cover window 100 during the bonding process between the display panel 300 and the cover window 100. Hereinafter, the alignment mark 200 provided in the display panel 300 will be described in detail with reference to other drawings.

[0105] Figure 5 It is shown Figure 3 Schematic diagram of the Q1 portion when the display panel is in a non-bent state. Figure 6 is along Figure 5 A cross-sectional view taken along line VI-VI'. Figure 7 It is shown Figure 5 Floor plan of the Q2 section. Figure 8 It is shown Figure 3 Schematic diagram of the Q1 portion when the display panel is in a bent state. Fig. 9 is along Figure 8 A cross-sectional view taken along line IX-IX'. Fig.10 It is shown Figure 8 Floor plan of the Q3 section.

[0106] Figure 5 An enlarged view of an upper left corner of a first bending intersection point DBP1 where the first bending line BL1 and the third bending line BL3 intersect each other when the display panel 300 is in a non-bending state is shown. Figure 8is an enlarged view of the upper left corner where the first bending intersection point DBP1 where the first bending line BL1 and the third bending line BL3 intersect each other when the display panel 300 is in a bent state. Since the alignment marks 200 provided in the display panel 300 have substantially the same structure or shape except for their positions, the first alignment mark 210 and the second alignment mark 220 facing each other with the first bending line BL1 interposed therebetween are substantially the same as the third alignment mark 230 and the fourth alignment mark 240 facing each other with the third bending line BL3 interposed therebetween. Hereinafter, the first alignment mark 210 and the second alignment mark 220 facing each other with the first bending line BL1 interposed therebetween will be described in detail. Obviously, the description of the first alignment mark 210 and the second alignment mark 220 facing each other with the first bending line BL1 interposed therebetween can be equally applied to the first alignment mark 210 and the second alignment mark 220 facing each other with the second bending line BL2 interposed therebetween.

[0107] refer to Figures 5 to 10 According to an embodiment, the display panel 300 may include a first bending line BL1 extending in one direction (e.g., the second direction DR2) and located in the display area DA. The display panel 300 may include: a first alignment mark 210 disposed in the first area DS1 or the fifth display area DA5 as one side area around the first bending line BL1; and a second alignment mark 220 disposed in the second area DS2 or the first display area DA1 as an opposite side area opposite to the one side area.

[0108] The first alignment mark 210 and the second alignment mark 220 may face each other with the first bending line BL1 interposed therebetween. One side portion and the opposite side portion (i.e., a first side portion corresponding to the first alignment mark 210 and a second side portion corresponding to the second alignment mark 220) may contact each other with the first bending line BL1 interposed therebetween.

[0109] The second area DS2 of the display panel 300 may be bent downward in a direction opposite to the third direction DR3 relative to the flat first area DS1 that is not bent from the first bending line BL1. Therefore, the first alignment mark 210 among the first alignment mark 210 and the second alignment mark 220 that face each other with the first bending line BL1 interposed therebetween may not be bent, and the second alignment mark 220 may be bent relative to the first alignment mark 210. In a top view of the display panel 300 in a non-bent state in a direction opposite to the third direction DR3, the first alignment mark 210 of the first area and the second alignment mark 220 of the second area disposed on the plane are visually recognized as a non-deformed state. However, when the second area DS2 of the display panel 300 is bent from the first bending line BL1, as the second alignment mark 220 extends from the first bending line BL1 toward the opposite side portion spaced apart from the first bending line BL1, the second alignment mark 220 may be recognized as having a narrower area due to perspective. That is, when the display panel 300 is bent at the first bending line BL1, the degree of bending of the display panel 300 can be calculated based on the measurement result of the size change of the second area of ​​the second alignment mark 220 provided in the second region DS2 as the bending region. In some cases, when the display panel 300 is bent, the degree of bending of the display panel 300 can be determined based on the comparison result of the second area of ​​the second alignment mark 220 and the first area of ​​the first alignment mark 210.

[0110] According to one embodiment, the first area 210S of the first alignment mark 210 may be different from the second area 220S of the second alignment mark 220. Figures 5 to 7 As shown in FIG. 2 , when the display panel 300 is in a non-bent state, the second area 220S of the second alignment mark 220 may be larger than the first area 210S of the first alignment mark 210 .

[0111] The first alignment mark 210 may have a first first direction dimension DM1 measured in the first direction DR1 and a first second direction dimension H1 measured in the second direction DR2. The second alignment mark 220 may have a second first direction dimension DM2 measured in the first direction DR1 and a second second direction dimension H2 measured in the second direction DR2. When the first display area DA1 corresponding to the second area DS2 is bent from the first bending line BL1, the first alignment mark 210 may be identified as having the same area as the area before the first display area DA1 is bent, and the second alignment mark 220 may be identified as having a smaller area than the area before the first display area DA1 is bent due to perspective. According to one embodiment, the second area 220S of the second alignment mark 220 may be larger than the first area 210S of the first alignment mark 210. That is, at least one of the second first direction dimension DM2 and the second second direction dimension H2 may be larger than at least one of the first first direction dimension DM1 and the first second direction dimension H1.

[0112] In an embodiment, the second alignment mark 220 has a second first direction dimension DM2 measured in the first direction DR1 perpendicular to the second direction DR2 extending from the bending line (ie, the first bending line BL1). The second first direction dimension DM2 may be greater than the first first direction dimension DM1 of the first alignment mark 210 measured in the first direction DR1. Figure 7 It is shown that the first second direction dimension H1 is equal to the second second direction dimension H2, and the second first direction dimension DM2 is greater than the first first direction dimension DM1. In one embodiment, each of the first alignment mark 210 and the second alignment mark 220 may have a tapered shape in which the width decreases as it extends toward the first bending line BL1. The top ends of the first alignment mark 210 and the second alignment mark 220 may contact each other at the first bending line BL1. That is, each of the first alignment mark 210 and the second alignment mark 220 may have a tapered shape in which the width decreases as it extends toward the first bending line BL1, and the top ends of the first alignment mark 210 and the second alignment mark 220 may contact each other at the first bending line BL1. However, the present disclosure is not limited thereto. The shape of each of the first alignment mark 210 and the second alignment mark 220 is not particularly limited.

[0113] When the first display area DA1 as the second area DS2 is bent downward (i.e., in the direction opposite to the third direction DR3) and from the first bending line BL1 extending in the second direction DR2, the perspective of the area in the first display area DA1 may increase as the spacing between the area in the first display area DA1 and the first bending line BL1 in the second direction DR2 increases. When the second alignment mark 220 located in the bent area is observed in the direction opposite to the third direction DR3, the second first-direction dimension DM2 extending in the first direction DR1 may be smaller due to the perspective. Therefore, although the second alignment mark 220 has an area larger than that of the first alignment mark 210, when observed in the direction opposite to the third direction DR3 in a state where the display panel 300 is bent, the first alignment mark 210 and the second alignment mark 220 may be recognized as having substantially the same area.

[0114] More specifically, the first area DS1 of the display panel 300 may be a flat surface without bending. Figure 6 As shown in , a virtual reference plane RS having a plane parallel to the flat first area DS1 and spaced apart from the first area DS1 in the third direction DR3 may be defined. In a top view of the first alignment mark 210 and the second alignment mark 220 of the display panel 300 in a direction opposite to the third direction DR3, each of the first alignment mark 210 and the second alignment mark 220 may be projected onto the reference plane RS, so that an orthogonal projection area may be defined on the reference plane RS. A first orthogonal projection area 210R in a direction opposite to the third direction DR3 corresponding to the first alignment mark 210 may be defined on the reference plane RS. A second orthogonal projection area 220R in a direction opposite to the third direction DR3 corresponding to the second alignment mark 220 may be defined on the reference plane RS. In a non-bending state of the display panel 300, the first orthogonal projection area 210R may be smaller than the second orthogonal projection area 220R because the second area 220S of the second alignment mark 220 may be larger than the first area 210S of the first alignment mark 210.

[0115] On the contrary, Figures 8 to 10As shown in , when the second area DS2 of the display panel 300 is bent downward from the first bending line BL1 and relative to the first area DS1, the first alignment mark 210 set in the flat first area DS1 may not be bent, and the second alignment mark 220 set in the second area DS2 as a curved area may be bent downward. Therefore, because the area in the second area DS2 is away from the first bending line BL1 extending in the second direction DR2 in the first direction DR1, the spacing between the area in the second area DS2 and the first bending line BL1 extending in the second direction DR2 in the first direction DR1 may be perceived as smaller due to perspective. That is, when viewed in the direction opposite to the third direction DR3, the second first direction dimension DM2' of the second alignment mark 220 in the first direction DR1 may be reduced.

[0116] Even when the display panel 300 is bent, the first area 210S of the first alignment mark 210 may have substantially the same size as the first orthogonal projection area 210R. In contrast, when the display panel 300 is bent, more specifically, when the second region DS2 is bent, the second area 220S of the second alignment mark 220 may be constant, while the second orthogonal projection area 220R' may become smaller.

[0117] According to one embodiment, in a state where the display panel 300 is bent, the first orthogonal projection area 210R of the first alignment mark 210 and the second orthogonal projection area 220R′ of the second alignment mark 220 may be equal to each other. Fig.10 In the direction opposite to the third direction DR3 Figure 8 A top view of the Q3 section. Figure 7 and Fig.10 As shown in , even when the display panel 300 is bent, each of the first first-direction dimension DM1 and the first second-direction dimension H1 of the first alignment mark 210 of the first area DS1 may be constant. On the contrary, when the second area DS2 is bent, the second first-direction dimension DM2' of the second alignment mark 220 of the second area DS2 in the first direction DR1 perpendicular to the second direction DR2 extending from the first bending line BL1 becomes narrower due to perspective. Therefore, the second orthogonal projection area 220R' of the second alignment mark 220 when viewed in the direction opposite to the third direction DR3 may have the same size as the first orthogonal projection area 210R of the first alignment mark 210 when viewed in the direction opposite to the third direction DR3.

[0118] During the manufacturing process of the display device 10, when the second area DS2 of the display panel 300 is bent, the bending degree of the display panel 300 can be calculated based on the measurement result of the size change of the second orthogonal projection area 220R of the second alignment mark 220. In one embodiment, the first alignment mark 210 and the second alignment mark 220 can be designed so that when the display panel 300 is bent, the first area 210S of the first alignment mark 210 is smaller than the second area 220S of the second alignment mark 220, and the first orthogonal projection area 210R has the same size as the second orthogonal projection area 220R. Therefore, during the manufacturing process of the display device 10, the second area DS2 of the display panel 300 is bent until the size of the second orthogonal projection area 220R' is equal to the size of the first orthogonal projection area 210R, and then, the display panel 300 and the cover window 100 can be interconnected to each other.

[0119] Fig.11 is a cross-sectional view schematically illustrating a bending area of ​​a display device according to an embodiment.

[0120] refer to Fig.11 , the display device 10 may include a fifth display area DA5 located in the flat first area DS1, a first display area DA1 located in the second area DS2 as a curved area, and a first non-display area NDA1. The cover window 100 includes a base substrate 110 and a printed layer 130. The printed layer 130 may be disposed in an area corresponding to the first non-display area NDA1 of the display panel 300 to define a light blocking portion ( Figure 2 NDA100 in ).

[0121] The display panel 300 includes a first alignment mark 210 and a second alignment mark 220 facing each other while the first bending line BL1 is interposed therebetween. The first alignment mark 210 may be disposed in the fifth display area DA5 corresponding to the first area DS1, and the second alignment mark 220 may be disposed in the first display area DA1 located in the second area DS2. When the display panel 300 is bent along the first bending line BL1, the first orthogonal projection area 210R of the first alignment mark 210 and the second orthogonal projection area 220R' of the second alignment mark 220 may have the same size. The second alignment mark 220 of the display panel 300 may be designed so that when the display panel 300 is bent at a predetermined bending angle, the second orthogonal projection area 220R' of the second alignment mark 220 may have the same size as the first orthogonal projection area 210R of the first alignment mark 210. Alternatively, in the method for manufacturing the display device 10, the bending angle of the display panel 300 may be measured based on the size change of the second orthogonal projection area 220R of the second alignment mark 220.

[0122] Fig.12 is a flowchart illustrating a method for manufacturing a display device according to one embodiment.

[0123] refer to Fig.12 According to one embodiment, a method for manufacturing a display device 10 includes: a step S100 of preparing a display panel 300, the display panel 300 including a first bending line BL1 extending in a second direction DR2, a first alignment mark 210 arranged at one side around the first bending line BL1, and a second alignment mark 220 arranged at an opposite side around the first bending line BL1 and facing the first alignment mark 210; and a step S200 of bending an opposite side portion of the display panel 300 around the first bending line BL1 (i.e., bending the second region DS2 in a direction opposite to a third direction DR3 perpendicular to the second direction DR2); and a step S300 of bonding a cover window 100 to the display panel 300 to cover the display panel 300.

[0124] The method for manufacturing the display device 10 may include the step of bonding the display panel 300 to the cover window 100 when the display panel 300 is in a bent state. As described above, the size of the second orthogonal projection area 220R of the second alignment mark 220 of the display panel 300 may change as the second area DS2 is bent. Bending the display panel 300 according to one embodiment may include comparing the first orthogonal projection area 210R of the first alignment mark 210 with the second orthogonal projection area 220R of the second alignment mark 220. The bending angle of the display panel 300 may be calculated based on the measurement result of the size change of the second orthogonal projection area 220R of the second alignment mark 220. It may be described in detail with reference to other drawings.

[0125] Figures 13 to 15 is a cross-sectional view illustrating a method for manufacturing a display device according to one embodiment.

[0126] First, refer to Fig.13, the method may prepare a display panel 300 including a first alignment mark 210 and a second alignment mark 220. The display panel 300 includes a first bending line BL1 and a second bending line BL2, and may include a first area DS1 as a flat area between the first bending line BL1 and the second bending line BL2 and a second area DS2 as a curved area other than the first area DS1. The first area DS1 includes a fifth display area DA5, and the second area DS2 includes a first display area DA1 and a first non-display area NDA1 or a second display area DA2 and a second non-display area NDA2. Since the description of the display panel 300 is the same as that described above, a detailed description thereof will be omitted. In addition, hereinafter, a method for manufacturing the display device 10 will be described based on the first bending line BL1 of the display panel 300. Obviously, the description to be made below may be equally applied to the second bending line BL2 or each of the third bending line BL3 and the fourth bending line BL4 as not shown in the drawings.

[0127] Fig.13 2 shows the orthogonal projection areas 210R and 220R of the first alignment mark 210 and the second alignment mark 220 before the display panel 300 is bent. The first orthogonal projection area 210R and the second orthogonal projection area 220R before the display panel 300 is bent have the same size as the first area 210S of the first alignment mark 210 and the second area 220S of the second alignment mark 220, respectively. According to one embodiment, the second area 220S of the second alignment mark 220 is larger than the first area 210S of the first alignment mark 210. Therefore, Fig.13 In the embodiment, the second orthogonal projection area 220R may be larger than the first orthogonal projection area 210R.

[0128] Next, refer to Fig.14 , the method may bend the display panel 300 downward, more specifically, bend the second area DS2 as the opposite side around the first bending line BL1 downward. When the second area DS2 is bent, the size of the first orthogonal projection area 210R of the first alignment mark 210 disposed in the first area DS1 may not change, while the size of the second orthogonal projection area 220R of the second alignment mark 220 disposed in the second area DS2 may change. According to one embodiment, bending the display panel 300 includes: measuring the first orthogonal projection area 210R of the first alignment mark 210 and the second orthogonal projection area 220R of the second alignment mark 220; and comparing the first orthogonal projection area 210R and the second alignment mark 220 with each other.

[0129] As described above, the first alignment mark 210 and the second alignment mark 220 may be designed so that the second area 220S of the second alignment mark 220 of the display panel 300 may be larger than the first area 210S of the first alignment mark 210. The ratio of the first area 210S to the second area 220S may be designed based on the bending angle of the display panel 300. In the step of bending the display panel 300, the bending angle of the display panel 300 may be calculated based on the measurement result of the size change of the second orthogonal projection area 220R' of the second alignment mark 220. In one embodiment, when the display panel 300 is in a bent state, the size of the second orthogonal projection area 220R' of the second alignment mark 220 may be the same as the size of the first orthogonal projection area 210R of the first alignment mark 210.

[0130] The second alignment mark 220 of the display panel 300 may be designed such that when the display panel 300 is bent at a predetermined bending angle, the second orthogonal projection area 220R′ of the display panel 300 has the same size as the first orthogonal projection area 210R of the first alignment mark 210. Fig.14 Bending the display panel 300 as shown in FIG. 3 may include bending the display panel 300 until the size of the second orthogonal projection area 220R′ is equal to the size of the first orthogonal projection area 210R.

[0131] Next, refer to Fig.15 , the method can bond the cover window 100 to the bent display panel 300. In the step of bonding the cover window 100, the first alignment mark 210 and the second alignment mark 220 can be used to measure the alignment state between the cover window 100 and the display panel 300. Similar to the display panel 300, the cover window 100 may include a flat first area DS1 and a curved second area DS2. When the display panel 300 and the cover window 100 are bonded to each other, the method can measure the position and size of the second alignment mark 220 of the display panel 300, calculate the bending angle of the display panel 300 based on the measured position and size, align the display panel 300 with the cover window 100 based on the bending angle, and then bond the display panel 300 to the cover window 100. Using the above method, the display device 10 according to one embodiment can be manufactured. The display device 10 according to one embodiment includes a second alignment mark 220, and the second alignment mark 220 has an area different from that of the first alignment mark 210. In this regard, the method for manufacturing the display device 10 may include measuring a bending angle of the display panel 300 using the first alignment mark 210 and the second alignment mark 220 , and aligning the cover window 100 with the display panel 300 based on the bending angle.

[0132] In one example, as described above, the shape of the first alignment mark 210 and the shape of the second alignment mark 220 are not limited to Figures 5 to 10 Hereinafter, another embodiment of the display device 10 will be described.

[0133] Fig.16 and Fig.17 is a plan view showing a first alignment mark and a second alignment mark according to another embodiment.

[0134] refer to Fig.16 In the display panel 300 according to an embodiment, the second direction dimension of each of the sides of the first alignment mark 210_1 and the second alignment mark 220_1 that contact each other may be greater than the second direction dimension of each of the opposite sides of the first alignment mark 210_1 and the second alignment mark 220_1 that are spaced apart from each other. In addition to the shape in the plan view, Fig.16 Each of the alignment marks 210_1 and 220_1 in Figure 7 Each of the alignment marks 210 and 220 in FIG. 1 is the same. Hereinafter, the differences therebetween will be described in detail.

[0135] Fig.16 The first alignment mark 210_1 and the second alignment mark 220_1 may be designed such that the second direction dimension of each of the side portions of the first alignment mark 210_1 and the second alignment mark 220_1 that contact each other at and along the first bending line BL1 may be greater than the second direction dimension of each of the opposite side portions of the first alignment mark 210_1 and the second alignment mark 220_1 that are spaced apart from each other. That is, the second direction dimension at a position in each of the first alignment mark 210_1 and the second alignment mark 220_1 may decrease as the spacing between the position and the first bending line BL1 increases.

[0136] However, in Fig.16, the first second direction dimension H1_1 of the first alignment mark 210_1 and the second second direction dimension H2_1 of the second alignment mark 220_1 may be equal to each other, and the first first direction dimension DM1_1 of the first alignment mark 210_1 may be smaller than the second first direction dimension DM2_1 of the second alignment mark 220_1. That is, according to one embodiment, as long as the first alignment mark 210_1 and the second alignment mark 220_1 have different areas, their shapes are not particularly limited. The shape of the first alignment mark 210_1 and the shape of the second alignment mark 220_1 are not limited thereto, as long as the second direction dimensions H1_1 and H2_1 of the first alignment mark 210_1 and the second alignment mark 220_1 measured in the second direction DR2 extending from the first bending line BL1 are equal to each other and the first first direction dimensions DM1_1 and the second first direction dimensions DM2_1 measured in the first direction DR1 perpendicular to the second direction DR2 are different from each other.

[0137] In one example, reference Fig.17 According to one embodiment, the second direction dimensions H1_2 and H2_2 of the first alignment mark 210_2 and the second alignment mark 220_2 measured in the second direction DR2 extending from the first bending line BL1 may be different from each other. In addition, the first direction dimensions DM1_2 and DM2_2 of the first alignment mark 210_2 and the second alignment mark 220_2 measured in the first direction DR1 perpendicular to the second direction DR2 may be different from each other.

[0138] As described above, the shape of the first alignment mark 210_2 and the shape of the second alignment mark 220_2 are not particularly limited as long as the first alignment mark 210_2 and the second alignment mark 220_2 have different areas. Fig.17 The first first direction dimensions DM1_2 and the second first direction dimensions DM2_2 of the first alignment mark 210_2 and the second alignment mark 220_2 respectively measured in the first direction DR1 may be different from each other. Fig.17 The first and second direction dimensions H1_2 and H2_2 of the first and second alignment marks 210_2 and 220_2 respectively measured in the second direction DR2 may be different from each other. The present disclosure is not limited thereto.

[0139] Fig.18 is a plan view showing an alignment mark according to still another embodiment.

[0140] refer to Fig.18According to one embodiment, the alignment mark 200_3 may include a first alignment mark 210_3 and a second alignment mark 220_3, and may further include at least one fifth alignment mark 251_3 and 252_3. The at least one fifth alignment mark 251_3 and 252_3 may be spaced apart from the first alignment mark 210_3, while the first bending line BL1 is interposed between the at least one fifth alignment mark 251_3 and 252_3 and the first alignment mark 210_3, and the at least one fifth alignment mark 251_3 and 252_3 may be disposed in the second region DS2, and may have a third area greater than the second area 220S of the second alignment mark 220_3. That is, the alignment mark 200_3 according to one embodiment may include a plurality of alignment marks disposed in the second region DS2 as a bending region. In addition Fig.18 In addition to the alignment mark 200_3 in FIG. 1 , the fifth alignment marks 251_3 and 252_3 are also included. Fig.18 The alignment mark 200_3 in Figure 7 The first alignment mark 210 and the second alignment mark 220 in FIG. 2 are the same. Hereinafter, the difference therebetween will be described.

[0141] In addition to the second alignment mark 220_3, the display panel 300 may further include a plurality of fifth alignment marks 251_3 and 252_3 as alignment marks disposed in the second region DS2. Although the drawings show that the fifth-first alignment mark 251_3 and the fifth-second alignment mark 252_3 are also disposed in the second region DS2, the present disclosure is not limited thereto. A greater number of fifth alignment marks may be disposed in the second region DS2.

[0142] When the second area DS2 of the display panel 300 is bent downward from the first bending line BL1, the perspective of the area in the second area DS2 may increase as the spacing between the area and the first bending line BL1 in the first direction DR1 perpendicular to the second direction DR2 increases. That is, the orthogonal projection area of ​​the area of ​​each of the second alignment mark 220_3, the fifth-first alignment mark 251_3, and the fifth-second alignment mark 252_3 provided in the second area DS2 may be greatly reduced as the spacing between the area and the first bending line BL1 in the first direction DR1 gradually increases.

[0143] According to one embodiment, the third area, which is the area of ​​each of the fifth-first alignment mark 251_3 and the fifth-second alignment mark 252_3, may be greater than the second area of ​​the second alignment mark 220_3. As shown in the drawings, the fifth-first first-direction dimension DM5a of the fifth-first alignment mark 251_3 measured in the first direction DR1 may be greater than the second first-direction dimension DM2_3 of the second alignment mark 220_3. The fifth-first second-direction dimension H5a of the fifth-first alignment mark 251_3 measured in the second direction DR2 may be greater than the second second-direction dimension H2_3 of the second alignment mark 220_3. Similarly, the fifth-second first-direction dimension DM5b and the fifth-second second-direction dimension H5b of the fifth-second alignment mark 252_3 may be greater than the fifth-first first-direction dimension DM5a and the fifth-first second-direction dimension H5a of the fifth-first alignment mark 251_3, respectively. As the position shifts from the second alignment mark 220_3 toward the fifth-second alignment mark 252_3, the spacing between the position and the first bending line BL1 may increase. Therefore, when the second area DS2 of the display panel 300 is bent, the orthogonal projection area of ​​each of the fifth-first alignment mark 251_3 and the fifth-second alignment mark 252_3 may be greatly reduced as the spacing between the area and the first bending line BL1 increases. Therefore, as the position shifts from the second alignment mark 220_3 to the fifth-second alignment mark 252_3, in the non-bending state of the display panel 300, the plane size of the second alignment mark 220_3 to the plane size of the fifth-second alignment mark 252_3 may increase in this order, and in the bending state of the display panel 300, the orthogonal projection area of ​​the first alignment mark 210_3, the orthogonal projection area of ​​the second alignment mark 220_3, the orthogonal projection area of ​​the fifth-first alignment mark 251_3, and the orthogonal projection area of ​​the fifth-second alignment mark 252_3 may be the same as each other. However, the present disclosure is not limited thereto.

[0144] In one example, the display panel 300 may include a first bending line BL1 extending in the second direction DR2 and a third bending line BL3 extending in the first direction DR1 and intersecting the first bending line BL1. The first bending line BL1 and the third bending line BL3 may intersect each other at a first bending intersection point DBP1. The first bending intersection point DBP1 may be located at a boundary between the fifth non-display area NDA5 and the fifth display area DA5. When the display panel 300 is bent from the first bending line BL1 and the third bending line BL3, the fifth non-display area NDA5 where the second area DS2 and the third area DS3 intersect each other may be bent along different bending lines. According to one embodiment, a plurality of alignment marks 200 may be provided in an area where different bending lines intersect each other. Therefore, the bending angle in the intersection area may be calculated based on the alignment mark 200.

[0145] Fig.19 is an enlarged view showing a portion of a display panel according to another embodiment. Fig. 20 is shown in the non-bent state Fig.19 A plan view of the Q4 portion of the display panel. Fig.21 It is shown in the bent state Fig.19 A plan view of the Q4 portion of the display panel.

[0146] refer to Figures 19 to 21 , according to one embodiment, the alignment mark 200 may be set in the area where the second area DS2 bent from the first bending line BL1 and the third area DS3 bent from the third bending line BL3 intersect each other. The area where the second area DS2 and the third area DS3 intersect each other may be a doble-curved area bent from a plurality of bending lines BL1 and BL3. A plurality of alignment marks 200 may be set in the doble-curved area. Therefore, the bending angle of the doble-curved area may be calculated based on the change in the orthogonal projection area of ​​each mark.

[0147] The alignment mark 200 according to one embodiment may further include a sixth alignment mark 260_4 and a seventh alignment mark 270_4, the sixth alignment mark 260_4 being disposed in the first region DS1 and having a sixth area 260S_4 and having a side in contact with the first bending intersection DBP1_4, the seventh alignment mark 270_4 being disposed in the fifth non-display area NDA5 and facing the sixth alignment mark 260_4, while the first bending intersection DBP1_4 is interposed between the seventh alignment mark 270_4 and the sixth alignment mark 260_4, and the seventh alignment mark 270_4 having a seventh area 270S_4 different from the sixth area 260S_4. In addition, the alignment mark 200 according to one embodiment may further include an eighth alignment mark 280_4, the eighth alignment mark 280_4 may be spaced apart from the first bending line BL1 and the third bending line BL3, and may be disposed in the fifth non-display area NDA5 and having an eighth area 280S_4 greater than the seventh area 270S_4.

[0148] The sixth alignment mark 260_4 may substantially correspond to the above reference Figures 5 to 10 The sixth alignment mark 260_4 may be disposed in the first area DS1 as a flat area. Even when the display panel 300 is bent, the sixth orthogonal projection area 260R_4 of the sixth alignment mark 260_4 may not change. However, unlike the first alignment mark 210, the sixth alignment mark 260_4 may be disposed to overlap with the third bending line BL3 intersecting the first bending line BL1. Therefore, the sixth alignment mark 260_4 may be used to measure the bending angle of the third area DS3 bent from the third bending line BL3 and the first bending line BL1.

[0149] The seventh alignment mark 270_4 may face the sixth alignment mark 260_4, and the first bending intersection DBP1_4 is disposed between the seventh alignment mark 270_4 and the sixth alignment mark 260_4. The seventh alignment mark 270_4 may correspond to the sixth alignment mark 260_4 as described above with reference to FIG. Figures 5 to 10The second alignment mark 220 described above. However, the seventh alignment mark 270_4 may be arranged to overlap with the third bending line BL3, and may be partially arranged in a non-display area located in the fishing boat-shaped bending area (i.e., the fifth non-display area NDA5) of the display panel 300. The seventh alignment mark 270_4 is located in both the second area DS2 and the third area DS3 bent from the first bending line BL1 and the third bending line BL3, respectively. Therefore, when the display panel 300 is bent, the orthogonal projection area of ​​the seventh alignment mark 270_4 may change in the first direction DR1 and the second direction DR2. That is, when the display panel 300 is bent at the first bending line BL1, the orthogonal projection area of ​​the seventh alignment mark 270_4 may change in the first direction DR1. When the display panel 300 is bent at the third bending line BL3, the orthogonal projection area of ​​the seventh alignment mark 270_4 may change in the second direction DR2.

[0150] The eighth alignment mark 280_4 may be spaced apart from the first bending line BL1 and the third bending line BL3, and may be disposed in the fifth non-display area NDA5, which is a fishing boat-shaped bending area where the second area DS2 and the third area DS3 intersect each other. Like the seventh alignment mark 270_4, when the display panel 300 is bent at the first bending line BL1, the orthogonal projection area of ​​the eighth alignment mark 280_4 may change in the first direction DR1. When the display panel 300 is bent at the third bending line BL3, the orthogonal projection area of ​​the eighth alignment mark 280_4 may change in the second direction DR2. However, unlike the seventh alignment mark 270_4, the eighth alignment mark 280_4 may be spaced apart from the first bending line BL1 and the third bending line BL3. Therefore, the eighth area 280S_4 of the eighth alignment mark 280_4 may be greater than the seventh area 270S_4 of the seventh alignment mark 270_4.

[0151] Fig. 20 Shows Fig.19 The sixth alignment mark 260_4, the seventh alignment mark 270_4 and the eighth alignment mark 280_4 when the display panel 300 is in a non-bent state. Fig.21 The sixth alignment mark 260_4 , the seventh alignment mark 270_4 , and the eighth alignment mark 280_4 are shown when the display panel 300 is in a bent state.

[0152] First, if Fig. 20As shown in , when the display panel 300 is in a non-bent state, the sixth area 260S_4 of the sixth alignment mark 260_4, the seventh area 270S_4 of the seventh alignment mark 270_4, and the eighth area 280S_4 of the eighth alignment mark 280_4 may be equal to their sixth orthogonal projection area, seventh orthogonal projection area, and eighth orthogonal projection area on the reference plane RS, respectively. Fig. 20 , it is shown that the sixth area 260S_4, the seventh area 270S_4 and the eighth area 280S_4 are arranged on the reference plane RS. When the display panel 300 is in a non-bent state, it can be understood that the sixth area 260S_4 of the sixth alignment mark 260_4, the seventh area 270S_4 of the seventh alignment mark 270_4 and the eighth area 280S_4 of the eighth alignment mark 280_4 are respectively equal to their sixth orthogonal projection area, seventh orthogonal projection area and eighth orthogonal projection area on the reference plane RS.

[0153] According to one embodiment, the area of ​​the sixth alignment mark 260_4, the area of ​​the seventh alignment mark 270_4, and the area of ​​the eighth alignment mark 280_4 may increase in this order. The sixth second direction dimension H6_4 and the sixth first direction dimension DM6_4 of the sixth alignment mark 260_4 may be respectively smaller than the seventh second direction dimension H7_4 and the seventh first direction dimension DM7_4 of the seventh alignment mark 270_4. The seventh second direction dimension H7_4 and the seventh first direction dimension DM7_4 of the seventh alignment mark 270_4 may be respectively smaller than the eighth second direction dimension H8_4 and the eighth first direction dimension DM8_4 of the eighth alignment mark 280_4.

[0154] Next, if Fig.21As shown in , when the display panel 300 is bent along the first bending line BL1 and the third bending line BL3, the orthogonal projection area of ​​each of the seventh alignment mark 270_4 and the eighth alignment mark 280_4 disposed in the second area DS2 and the third area DS3 may be reduced. According to one embodiment, in the bent state of the display panel 300, each of the seventh orthogonal projection area 270R'_4 of the seventh alignment mark 270_4 and the eighth orthogonal projection area 280R'_4 of the eighth alignment mark 280_4 may be equal to the sixth orthogonal projection area 260R_4 of the sixth alignment mark 260_4. The sixth alignment mark 260_4 may be disposed in the first area DS1. Therefore, even when the display panel 300 is bent, the size of the sixth orthogonal projection area 260R_4 may not change. In contrast, when the display panel 300 is bent, the size of each of the seventh orthogonal projection area 270R'_4 of the seventh alignment mark 270_4 and the eighth orthogonal projection area 280R'_4 of the eighth alignment mark 280_4 may change. In particular, the eighth orthogonal projection area 280R'_4 of the eighth alignment mark 280_4 spaced apart from the first bending line BL1 and the third bending line BL3 may change greatly. In one embodiment, the size of the seventh alignment mark 270_4 and the size of the eighth alignment mark 280_4 may be designed such that when the display panel 300 is bent at a predetermined bending angle, the size of each of the seventh orthogonal projection area 270R'_4 and the eighth orthogonal projection area 280R'_4 is equal to the size of the sixth orthogonal projection area 260R_4.

[0155] Alternatively, according to one embodiment, during the manufacturing process of the display device 10, the bending angle of the display panel 300 can be determined based on the measurement result of the size change of each of the seventh orthogonal projection area 270R'_4 of the seventh alignment mark 270_4 and the eighth orthogonal projection area 280R'_4 of the eighth alignment mark 280_4. The detailed description thereof is the same as above and is therefore omitted.

[0156] Fig. 22 and Fig.23 is an enlarged view showing a portion of a display panel according to still another embodiment.

[0157] refer to Fig. 22 Each of the sixth alignment mark 260_5, the seventh alignment mark 270_5, and the eighth alignment mark 280_5 may be located between the first bending line BL1 and the third bending line BL3. Fig.19Differently, each of the sixth alignment mark 260_5 and the seventh alignment mark 270_5 does not overlap with the third bending line BL3 and may be located between the first bending line BL1 and the third bending line BL3. Therefore, the sixth alignment mark 260_5 may be located in the first region DS1. When the second region DS2 and the third region DS3 are bent, the sixth orthogonal projection area of ​​the sixth alignment mark 260_5 may be kept constant. When Fig. 22 When the alignment mark of is rotated around the first bending intersection DBP1_5 by a certain angle, Fig. 22 The alignment marks can be Fig.21 The detailed description thereof will be omitted.

[0158] refer to Fig.23 According to one embodiment, the first bending intersection DBP1_6 where the first bending line BL1 and the third bending line BL3 intersect each other may be located in the fifth non-display area NDA5. Therefore, all of the sixth alignment mark 260_6, the seventh alignment mark 270_6, and the eighth alignment mark 280_6 may be located in the non-display area NDA. At least a portion of the non-display area NDA may be located on the non-bending first area DS1. In addition to the position of the first bending intersection DBP1_6 and in addition to the fact that a portion of the non-display area NDA may be located on the first area DS1, Fig.23 The display panel 300 and Fig. 22 Therefore, the detailed description will be omitted.

[0159] At the end of the detailed description, those skilled in the art will appreciate that many changes and modifications may be made to the preferred embodiment without departing substantially from the principles of the invention. Therefore, the preferred embodiments of the present invention disclosed are used in a general and descriptive sense only, and not for the purpose of limitation.

Claims

1. Display equipment, including: a display area and a non-display area surrounding the display area; a first bending line having at least a portion extending in a first direction and in the display area; A first area located at one side around the first bending line; a second region located at an opposite side around the first bending line, wherein the second region is bent in one direction relative to the first region and from the first bending line; a first alignment mark disposed in the first region and having a first area; as well as A second alignment mark is disposed in the second region and faces the first alignment mark, and the first bending line is disposed between the first alignment mark and the second alignment mark, wherein the second alignment mark has a second area different from the first area.

2. The display device according to claim 1, wherein: The display area includes: a first display area disposed in the first area around the first bending line; and a second display area disposed in the second area around the first bending line; The first alignment mark is disposed in the first display area, and the second alignment mark is disposed in the second display area.

3. The display device according to claim 2, wherein: The first side of the first alignment mark and the second side of the second alignment mark contact each other at the first bending line, Wherein, the second area is larger than the first area.

4. The display device according to claim 3, wherein: A first second direction dimension of the first alignment mark measured in a second direction perpendicular to the first direction is smaller than a second second direction dimension of the second alignment mark measured in the second direction.

5. The display device according to claim 4, wherein: A first first-direction dimension of the first alignment mark measured in the first direction is smaller than a second first-direction dimension of the second alignment mark measured in the first direction.

6. The display device according to claim 3, wherein: defining a reference plane parallel to the first region and spaced apart from the first region in a third direction in which the second region is bent, The size of a first orthogonal projection area of ​​the first alignment mark projected onto the reference plane in the third direction is the same as the size of a second orthogonal projection area of ​​the second alignment mark projected onto the reference plane in the third direction.

7. The display device according to claim 6 further includes a third alignment mark, which is spaced apart from the first alignment mark and faces the first alignment mark, and the first bending line is arranged between the first alignment mark and the third alignment mark, and the third alignment mark is arranged in the second region and has a third area larger than the second area.

8. The display device according to claim 7, wherein: A third orthogonal projection area of ​​the third alignment mark projected onto the reference plane in the third direction has the same size as each of the first orthogonal projection area and the second orthogonal projection area.

9. The display device according to claim 2, further comprising: a second bending line extending in a second direction perpendicular to the first direction, the second bending line intersecting the first bending line, and the first area being disposed at one side around the second bending line; as well as a third region located at an opposite side around the second bending line, the third region being bent relative to the first region and from the second bending line in the one direction; Wherein, the display area further includes a third display area arranged in the third area around the second bending line.

10. The display device according to claim 9, further comprising: a fourth alignment mark disposed in the first region and having a fourth area; as well as A fifth alignment mark is disposed in the third region and faces the fourth alignment mark, and the second bending line is disposed between the fourth alignment mark and the fifth alignment mark, and the fifth alignment mark has a fifth area different from the fourth area.

11. The display device according to claim 9, wherein: The non-display area includes: a first non-display area extending in the first direction, disposed in the second area, and located on one side of the second display area; a second non-display area extending in the second direction, disposed in the third area, and located on one side of the third display area; and a third non-display area located in an area where the first non-display area and the second non-display area intersect each other, Wherein, the bending intersection point serving as the intersection point between the first bending line and the second bending line is arranged at a boundary between the third non-display area and the first display area.

12. The display device according to claim 11, further comprising: a sixth alignment mark disposed in the first region, having a sixth area, and having a sixth side in contact with the bend intersection; as well as A seventh alignment mark is arranged in the third non-display area and faces the sixth alignment mark, and the bending intersection is arranged between the sixth alignment mark and the seventh alignment mark, and the seventh alignment mark has a seventh area different from the sixth area.

13. The display device of claim 12, further comprising an eighth alignment mark spaced apart from the first bending line and the second bending line and disposed in the third non-display region, the eighth alignment mark having an eighth area greater than the seventh area.

14. Display equipment, including: A first bending line extending in a first direction; a second bending line extending in a second direction perpendicular to the first direction and intersecting the first bending line; a first region surrounded by the first bending line and the second bending line; a second region bent from the first bending line; a third region, bent from the second bending line; a fourth region at which the second region and the third region intersect each other; at least one first alignment mark disposed in the first region and having a first area; as well as A second alignment mark is disposed in at least one of the second region, the third region, and the fourth region and has a second area greater than the first area, wherein the second alignment mark faces the first alignment mark.

15. The display device according to claim 14, wherein: The second alignment mark disposed in the second region and the first alignment mark facing the second alignment mark disposed in the second region contact each other at the first bending line, The second alignment mark disposed in the third region and the first alignment mark facing the second alignment mark disposed in the third region contact each other at the second bending line.

16. The display device according to claim 15, wherein: The second alignment mark disposed in the fourth region is spaced apart from each of the first bending line and the second bending line.

17. A method for manufacturing a display device, the method comprising: A display panel is provided, the display panel comprising: A first bending line extending in a first direction; A first alignment mark disposed at one side around the first bending line; and a second alignment mark disposed at an opposite side around the first bending line and facing the first alignment mark; bending opposite side portions of the display panel around the first bending line in a second direction perpendicular to the first direction; and bonding a cover window to the display panel to cover the display panel, Wherein, bending the display panel comprises: measuring a size of a first orthogonal projection area of ​​the first alignment mark projected onto a reference plane and a size of a second orthogonal projection area of ​​the second alignment mark projected onto the reference plane, the reference plane being parallel to a surface of the display panel disposed at one side around the first bending line and spaced apart from the surface in the second direction; and The first orthogonal projected area is compared to the second orthogonal projected area.

18. The method according to claim 17, wherein: In the display panel that is bent when the display panel is bent, a size of the first orthogonal projection area and a size of the second orthogonal projection area are equal to each other.

19. The method according to claim 18, wherein: The display panel further includes: a second bending line extending in a third direction perpendicular to both the first direction and the second direction; A third alignment mark disposed at one side around the second bending line; and a fourth alignment mark disposed at an opposite side around the second bending line, Wherein, bending the display panel includes: bending the opposite side portions of the display panel around the second bending line until the size of the third orthogonal projection area of ​​the third alignment mark projected onto the reference plane is equal to the size of the fourth orthogonal projection area of ​​the fourth alignment mark projected onto the reference plane.

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