Display device, attachment system and attachment method

Abstract

A display device, a bonding system and a bonding method; the display device comprises a cover plate (2), a display panel (1) and a support plate (3); the cover plate (2) comprises a first planar part (21), a second planar part (22) and a first curved part (23), the first curved part (23) is smoothly connected between the first planar part (21) and the second planar part (22), the second planar part (22) is parallel to the first planar part (21), the first curved part (23) extends along a first direction, the orthographic projection of the first curved part (23) on a first reference plane is arc-shaped, the first reference plane is perpendicular to the extension direction of the first curved part (23), the first planar part (21), the second planar part (22) and the first curved part (23) enclose an accommodation space; the display panel (1) is arranged in the accommodation space; the support plate (3) comprises a first flat support part (3a), a first arc surface support part (3b) and a second flat support part (3c) connected in sequence, the modulus of the first arc surface support part (3b) is smaller than the modulus of the first flat support part (3a) and the modulus of the second flat support part (3c); the first flat support part (3a) is bonded to the side of the display panel (1) away from the first planar part (21), the first arc surface support part (3b) is bonded to the side of the display panel (1) away from the first curved part (23), and the second flat support part (3c) is bonded to the side of the display panel (1) away from the second planar part (22). The support plate (3) has sufficient strength to support the display panel (1), and the support plate (3) has sufficient flexibility and is not easy to warp and bulge when bent, thereby avoiding the display panel from warping and bulging.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and more specifically, to a display device, a bonding system for bonding the display device, and a bonding method. Background Technology

[0002] Currently, with the rapid development of OLED (Organic Light-Emitting Diode) technology, various OLED display products with different shapes are gradually emerging in pursuit of maximizing mobile phone screen size. The OLED wraparound screen currently boasts the highest screen-to-body ratio, exceeding 180%. However, the bonding between the wraparound cover and the display panel remains a significant technological challenge.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0004] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a display device, a bonding system for bonding the display device, and a bonding method.

[0005] According to one aspect of this disclosure, a display device is provided, comprising:

[0006] The cover plate includes at least a first planar portion, a second planar portion, and a first curved portion. The first curved portion is smoothly connected between the first planar portion and the second planar portion. The second planar portion is parallel to the first planar portion. The first curved portion extends along a first direction. The orthographic projection of the first curved portion onto a first reference plane is arc-shaped. The first reference plane is perpendicular to the first direction. The first planar portion, the second planar portion, and the first curved portion enclose a receiving space.

[0007] A display panel is disposed in the accommodating space;

[0008] The support plate includes at least a first flat support portion, a first curved support portion, and a second flat support portion connected in sequence. The modulus of the first curved support portion is less than the modulus of the first flat support portion, and the modulus of the first curved support portion is less than the modulus of the second flat support portion.

[0009] The first flat support portion is attached to the side of the display panel away from the first flat portion, the first curved support portion is attached to the side of the display panel away from the first curved portion, and the second flat support portion is attached to the side of the display panel away from the second flat portion.

[0010] In one exemplary embodiment of this disclosure, the support plate includes:

[0011] The first layer includes at least a first part, a second part, and a third part connected in sequence, wherein the second part forms the first arc-shaped support portion;

[0012] At least one second layer is disposed on the side of the first portion away from the display panel and forms the second flat support portion with the first portion, wherein the modulus of the first layer is less than the modulus of the second layer;

[0013] At least one third layer is disposed on the side of the third portion away from the display panel and forms the first flat support portion with the third portion, wherein the modulus of the first layer is less than the modulus of the third layer.

[0014] In one exemplary embodiment of this disclosure, the thickness of the second portion is greater than the thickness of the first portion, and the thickness of the second portion is greater than the thickness of the third portion.

[0015] In one exemplary embodiment of this disclosure, the thickness of the second portion is equal to the sum of the thickness of the first portion and the thickness of the second layer, and the thickness of the second portion is equal to the sum of the thickness of the third portion and the thickness of the third layer.

[0016] In one exemplary embodiment of this disclosure, the thickness of the second layer and the third layer is greater than or equal to 15 micrometers and less than or equal to 200 micrometers; the thickness of the first portion and the thickness of the third portion are both greater than or equal to 10 micrometers and less than or equal to 200 micrometers.

[0017] In one exemplary embodiment of this disclosure, the width of the second planar portion in the second direction is less than or equal to the width of the first planar portion in the second direction, and the second direction is perpendicular to the first direction.

[0018] In one exemplary embodiment of this disclosure, the width of the first flat support portion in the second direction is less than or equal to the width of the second flat support portion in the second direction.

[0019] In one exemplary embodiment of this disclosure, the cover plate further includes:

[0020] The second curved surface is smoothly connected to the side of the first flat portion away from the first curved surface, and the second curved surface and the first curved surface are curved toward the same side of the first flat portion. The orthographic projection of the second curved surface on the first reference plane is arc-shaped.

[0021] In one exemplary embodiment of this disclosure, the support plate further includes:

[0022] The second curved support portion is connected to the side of the first flat support portion away from the first curved support portion, and is attached to the side of the display panel away from the second curved surface. The modulus of the second curved support portion is less than the modulus of the first flat support portion.

[0023] In one exemplary embodiment of this disclosure, the first layer further includes:

[0024] The fourth part is connected to the third part, and the fourth part forms the second arc-shaped support part. The thickness of the fourth part is the same as the thickness of the second part.

[0025] In one exemplary embodiment of this disclosure, two first curved surfaces are provided, and the two first curved surfaces are smoothly connected to opposite sides of the first planar portion; two second planar portions are provided, and the two second planar portions are smoothly connected to opposite sides of the two first curved surfaces, and a gap is provided between the two second planar portions.

[0026] In one exemplary embodiment of this disclosure, two first arc-shaped support portions are provided, and the two first arc-shaped support portions are correspondingly connected to opposite sides of the first straight support portion; two second straight support portions are provided, and the two second straight support portions are correspondingly connected to the opposite other side of the two first arc-shaped support portions.

[0027] In one exemplary embodiment of this disclosure, the first layer further includes:

[0028] The fifth part is connected to the third part, and the fifth part forms the first arc-shaped support part. The thickness of the fifth part is the same as the thickness of the second part.

[0029] The sixth part is connected to the fifth part, and the thickness of the sixth part is equal to the thickness of the third part;

[0030] The support plate also includes:

[0031] At least one fourth layer is disposed on the side of the sixth portion away from the display panel and forms the second flat support portion with the sixth portion, wherein the modulus of the fourth layer is greater than that of the first layer.

[0032] In one exemplary embodiment of this disclosure, the materials of the first flat support portion and the second flat support portion include stainless steel, and the material of the first arc-shaped support portion includes foam.

[0033] In one exemplary embodiment of this disclosure, the display device further includes:

[0034] The first adhesive layer is bonded between the cover plate and the display panel;

[0035] A protective layer is disposed between the display panel and the support plate;

[0036] The second adhesive layer is bonded between the display panel and the protective layer;

[0037] The third adhesive layer is bonded between the protective layer and the support plate.

[0038] In one exemplary embodiment of this disclosure, the first adhesive layer and the third adhesive layer are OCA optical adhesives, and the second adhesive layer is a pressure-sensitive adhesive.

[0039] According to another aspect of this disclosure, a bonding fixture bonding system is provided for bonding the display device described in any one of the above claims, the bonding system comprising:

[0040] The workbench is used to fix the cover plate.

[0041] The carrier film is used to sequentially bond the support plate and the display panel;

[0042] A clamping part is used to clamp the opposite ends of the carrier film;

[0043] A slider, wherein the carrier membrane surrounds the slider;

[0044] A robotic arm, one end of which is connected to the slider, is used to drive the slider to move so that the display panel fits against the cover plate.

[0045] In one exemplary embodiment of this disclosure, the slider includes:

[0046] First flat surface;

[0047] The second flat surface is arranged parallel to the first flat surface;

[0048] The first arc surface is smoothly connected between the first flat surface and the second flat surface.

[0049] In one exemplary embodiment of this disclosure, the bonding system further includes:

[0050] A protrusion is provided on the second flat surface and there is a first gap between it and the second flat surface, and one end of the bearing membrane can pass through the first gap.

[0051] In one exemplary embodiment of this disclosure, the slider further includes:

[0052] The second arc surface is smoothly connected to the side of the first flat surface that is away from the first arc surface.

[0053] In an exemplary embodiment of this disclosure, two first arc surfaces and two second flat surfaces are provided, with the two first arc surfaces smoothly connected between the first flat surface and the two second flat surfaces; the protrusion is provided between the two second flat surfaces; two first gaps are provided, and two second gaps are also provided on the protrusion, with the extension direction of the second gaps intersecting the extension direction of the first gaps, and the two second gaps correspondingly communicating with the two first gaps, and one end of the bearing membrane can pass through one first gap and one second gap.

[0054] According to another aspect of this disclosure, a bonding method is provided for bonding a display device according to any one of the above claims using a bonding system described in any one of the preceding claims, the bonding method comprising:

[0055] A support plate and a display panel are sequentially bonded to one side of the carrier film, and a first adhesive layer is formed on the side of the display panel away from the carrier film.

[0056] The carrier film is wrapped around the slider, and the display panel is shaped by clamping the opposite ends of the carrier film with the clamping part;

[0057] The robotic arm drives the slider to move along the first direction to the receiving space of the cover plate;

[0058] The robotic arm drives the slider to move along the second direction so that the display panel contacts the first curved surface. The robotic arm drives the slider to slide along the first curved surface to complete the bonding of the display panel with the first curved surface.

[0059] The robotic arm drives the slider to move in a direction perpendicular to the first plane to complete the bonding of the display panel with the first plane or the second plane.

[0060] The display device disclosed herein includes a cover plate comprising a first flat portion, a first curved portion, and a second flat portion connected in sequence, the second flat portion being parallel to the first flat portion, and the first curved portion being arc-shaped. The cover plate is a circumferential cover plate. A support plate includes a first straight support portion, a first arc-shaped support portion, and a second straight support portion connected in sequence. The modulus of the first arc-shaped support portion is less than the modulus of the first straight support portion and less than the modulus of the second straight support portion. The first straight support portion is attached to the side of the display panel away from the first flat portion, and the second straight support portion is attached to the side of the display panel away from the second flat portion, thereby providing sufficient strength for the support plate to achieve… The support plate provides sufficient flexibility, preventing warping and bulging of the display panel during bending. This ensures that the distance between the two relatively flat surfaces of the shaped display panel does not increase, allowing the slider, carrier film, support plate, and display panel to smoothly enter the cover plate. Furthermore, the close fit between the display panel and the slider facilitates the movement of the display panel during the fitting process, preventing air bubbles and wrinkles from forming.

[0061] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0062] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0063] Figure 1 This is a schematic diagram of the structure of a display panel after it has been modeled in related technologies.

[0064] Figure 2 This is a schematic diagram of the structure of a first example embodiment of the display device of this disclosure.

[0065] Figure 3 for Figure 2 A schematic diagram of the cover plate in the middle.

[0066] Figure 4 for Figure 2 A schematic diagram of the support plate in the diagram.

[0067] Figure 5 for Figure 4 A schematic diagram of the support plate and display panel after being modeled.

[0068] Figure 6 This is a schematic diagram of the structure of a second example embodiment of the cover plate in the display device of this disclosure.

[0069] Figure 7 for Figure 6 A top-down view.

[0070] Figure 8 This is a schematic diagram of the structure of a second example embodiment of the support plate in the display device of this disclosure.

[0071] Figure 9 This is a schematic diagram of the structure of a third example embodiment of the cover plate in the display device of this disclosure.

[0072] Figure 10 This is a schematic diagram of the structure of a third exemplary embodiment of the support plate in the display device of this disclosure.

[0073] Figure 11 This is a schematic diagram of the structure of the cover plate and support plate in the second exemplary embodiment of the display device of this disclosure after being modeled.

[0074] Figure 12 This is a schematic diagram of the structure of the cover plate and support plate in the third exemplary embodiment of the display device of this disclosure after being modeled.

[0075] Figure 13 This is a flowchart illustrating an example implementation of the bonding method of this disclosure.

[0076] Figures 14-16 This is a structural schematic diagram of each step of the bonding process in the first exemplary embodiment of the display device of this disclosure.

[0077] Figures 17-22 This is a structural schematic diagram of each step of the bonding process in the second exemplary embodiment of the display device of this disclosure.

[0078] Figures 23-26 This is a structural schematic diagram of each step of the bonding process in the second exemplary embodiment of the display device of this disclosure.

[0079] Explanation of reference numerals in the attached figures:

[0080] 1. Display panel;

[0081] 2. Cover plate; 21. First flat surface; 22. Second flat surface; 23. First curved surface; 24. Second curved surface;

[0082] 3. Support plate; 3a. First straight support part; 3b. First curved support part; 3c. Second straight support part; 3d. Second curved support part;

[0083] 31. First layer; 311. First part; 312. Second part; 313. Third part; 314. Fourth part; 315. Fifth part; 316. Sixth part;

[0084] 32. Second layer; 33. Third layer; 34. Fourth layer;

[0085] 4. First adhesive layer; 5. Protective layer; 6. Second adhesive layer; 7. Third adhesive layer; 8. Bearing film; 9. Clamping part; 10. Robotic arm;

[0086] 11. Slider; 111. Protrusion; 112. First gap; 113. Second gap. Detailed Implementation

[0087] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore detailed descriptions of them will be omitted. Furthermore, the drawings are merely illustrative of this disclosure and are not necessarily drawn to scale.

[0088] Although relative terms such as "up" and "down" are used in this specification to describe the relative relationship of one component of an icon to another, these terms are used only for convenience, such as according to the orientation of the examples shown in the accompanying drawings. It is understood that if the device of the icon is flipped upside down, the component described as "up" will become the component described as "down." When a structure is "up" of another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.

[0089] The terms “a,” “one,” “the,” “the,” and “at least one” are used to indicate the presence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms “first,” “second,” and “third,” etc., are used only as markers and are not a limitation on the number of objects.

[0090] Reference Figure 1 and Figure 2As shown, before attaching the cover plate 2 to the display panel 1, the non-display surface of the display panel 1 is usually attached to the support plate 3. Then, the support plate 3 is attached to the carrier film 8, the length of which is greater than the length of the display panel 1. Tension is applied to both ends of the carrier film 8, and then part of the carrier film 8 is wrapped around the slider 11, so that the carrier film 8, the support plate 3, and the display panel 1 form a shape similar to the outer contour of the slider 11. For example, in the arc area of ​​the slider 11, the carrier film 8, the support plate 3, and the display panel 1 all form an arc shape. This process is called contouring. In this process, because the display panel 1 and the support plate 3 have a certain shape in the arc area of ​​the slider 11, the non-display surface of the display panel 1 and the support plate 3 have a certain shape in the arc area of ​​the slider 11, the non-display surface of the display panel 1 and the support plate 3 form an arc shape. Due to the presence of a certain amount of rebound force, the display panel 1 and the support plate 3 will warp and bulge to some extent, resulting in a large gap between the display panel 1 and the slider 11. This increases the distance between the two relatively flat parts of the display panel 1 after shaping, while the height of the space in the cover plate 2 that accommodates the display panel 1 remains unchanged. Consequently, the slider 11 cannot smoothly drive the carrier film 8, the support plate 3, and the display panel 1 into the accommodating space of the cover plate 2. Moreover, during the bonding process, the slider 11 moves the display panel 1, making it difficult for the cover plate 2 to bond with the display panel 1. Air bubbles and wrinkles are easily generated during the bonding process between the cover plate 2 and the display panel 1.

[0091] This disclosure provides an exemplary embodiment of a display device, with reference to... Figure 2 As shown, the display device may include a cover plate 2, a display panel 1, and a support plate 3; the cover plate 2 includes at least a first flat portion 21, a second flat portion 22, and a first curved portion 23, the first curved portion 23 being smoothly connected between the first flat portion 21 and the second flat portion 22, the second flat portion 22 being parallel to the first flat portion 21, the first curved portion extending along a first direction, and the orthographic projection of the first curved portion 23 onto a first reference plane being arc-shaped, the first reference plane being perpendicular to the first direction, the first flat portion 21, the second flat portion 22, and the first curved portion 23 forming an accommodating space; the display panel 1 is disposed on... The support plate 3 includes at least a first flat support portion 3a, a first curved support portion 3b, and a second flat support portion 3c connected in sequence. The modulus of the first curved support portion 3b is less than that of the first flat support portion 3a, and the modulus of the first curved support portion 3b is less than that of the second flat support portion 3c. The first flat support portion 3a is attached to the side of the display panel 1 away from the first flat portion 21, the first curved support portion 3b is attached to the side of the display panel 1 away from the first curved portion 23, and the second flat support portion 3c is attached to the side of the display panel 1 away from the second flat portion 22.

[0092] In the display device disclosed herein, the modulus of the first curved support portion 3b is smaller than that of the first flat support portion 3a and smaller than that of the second flat support portion 3c; the first flat support portion 3a is attached to the side of the display panel 1 away from the first flat surface portion 21, and the second flat support portion 3c is attached to the side of the display panel 1 away from the second flat surface portion 22, so that the support plate 3 has sufficient strength to support the display panel 1; the first curved support portion 3b is attached to the side of the display panel 1 away from the first curved surface portion 23, so that the support plate 3 has sufficient strength to support the display panel 1. The flexibility of the support plate 3 prevents it from warping or bulging during bending, thus avoiding warping or bulging of the display panel 1. This ensures that the distance between the two relatively flat parts of the display panel 1 after shaping does not increase, allowing the slider 11, the carrier film 8, the support plate 3, and the display panel 1 to smoothly enter the cover plate 2. Moreover, the display panel 1 and the slider 11 fit together tightly. During the fitting process, the slider 11 moves the display panel 1, making it easy for the cover plate 2 to fit together with the display panel 1. During the fitting process between the cover plate 2 and the display panel 1, it is not easy to generate air bubbles or wrinkles.

[0093] The cover plate 2 can be a wraparound cover plate 2.

[0094] In this example implementation, refer to Figure 3 As shown, the cover plate 2 may include a first flat portion 21, a first curved portion 23, and a second flat portion 22. The first flat portion 21, the first curved portion 23, and the second flat portion 22 are connected in sequence to form a "U" shape.

[0095] Specifically, the first planar portion 21 can be rectangular; the first planar portion 21 may include a first plane and a second plane disposed opposite to each other. A first curved portion 23 is smoothly connected to one side of the first planar portion 21. For example, the first curved portion 23 can be smoothly connected to the long side of one side of the first planar portion 21, such that the first curved portion 23 extends along the long side of the first planar portion 21. Of course, in other exemplary embodiments of this disclosure, the first curved portion 23 can be smoothly connected to the short side of one side of the first planar portion 21, such that the first curved portion 23 extends along the short side of the first planar portion 21; the first planar portion 21 can also be configured with other shapes, and the extension direction of the first curved portion 23 is consistent with the extension direction of the edge of the first planar portion 21, which is the edge of the first planar portion 21 that connects to the first curved portion 23. The first curved portion extends along a first direction, which is the extension direction of the axis corresponding to the arc surface formed by the first curved portion.

[0096] The orthographic projection of the first curved surface 23 onto the first reference plane is arc-shaped, for example, it can be a semi-circular arc, a semi-elliptical arc, a parabolic arc, etc.; the first reference plane is perpendicular to the extension direction of the first curved surface, that is, the first reference plane is perpendicular to the first direction. That is, the first reference plane is perpendicular to the aforementioned edge, which is the edge of the first flat portion 21 that connects to the first curved surface 23. Specifically, the first curved surface 23 may include a first curved surface and a second curved surface disposed opposite to each other, the orthographic projection of the first curved surface onto the first reference plane is a semi-circular arc, and the orthographic projection of the second curved surface onto the first reference plane is also a semi-circular arc; the two semi-circular arcs are parallel to each other, and the two semi-circular arcs are connected to form a semi-circular arc shape.

[0097] The first curved surface is connected to the first plane and is tangent to the first plane; the second curved surface is connected to the second plane and is tangent to the second plane, so that the first curved surface 23 and the first plane 21 are smoothly connected.

[0098] The second planar portion 22 can also be rectangular, and is smoothly connected to the opposite side of the first curved portion 23. The second planar portion 22 is parallel to the first planar portion 21. The second planar portion 22 may include a third plane and a fourth plane disposed opposite to each other. The third plane may be connected to the first curved surface, and the first curved surface is tangent to the third plane; the fourth plane is connected to the second curved surface, and the second curved surface is tangent to the fourth plane, so that the first curved portion 23 and the second planar portion 22 are smoothly connected.

[0099] In this example embodiment, the width of the second planar portion 22 may be the same as the width of the first planar portion 21. The lengths of the first curved portion 23, the second planar portion 22, and the first planar portion 21 may also be the same. Of course, in other example embodiments of this disclosure, the widths of the second planar portion 22 and the first planar portion 21 may also be different, and the lengths of the first curved portion 23, the second planar portion 22, and the first planar portion 21 may also be different.

[0100] It should be noted that, referring to Figure 7 As shown, the length direction Y is consistent with the extension direction of the first curved surface 23, and the width direction X is perpendicular to the extension direction of the first curved surface 23. Similarly, the thickness direction Z is also perpendicular to the extension direction of the first curved surface 23, but it aligns with the direction of the distance between the first flat portion 21 and the second flat portion 22. The length direction Y is the first direction, and the width direction X is the second direction.

[0101] Please continue to refer to Figure 2As shown, a display panel 1 is provided in the receiving space of the cover plate 2. The portion of the display panel 1 opposite to the first flat portion 21 is the first flat area, the portion of the display panel 1 opposite to the first curved portion 23 is the curved area, and the portion of the display panel 1 opposite to the second flat portion 22 is the second flat area. Since the first flat portion 21 and the second flat portion 22 are parallel, the first flat area and the second flat area of ​​the display panel 1 are also parallel to each other. Furthermore, since the width of the second flat portion 22 is the same as the width of the first flat portion 21, the width of the first flat area and the width of the second flat area of ​​the display panel 1 are also the same.

[0102] The display surface of the display panel 1 is bonded to the inner side of the cover plate 2. Specifically, the display surface of the display panel 1 and the inner side of the cover plate 2 are bonded together by a first adhesive layer 4, which can be OCA (Optically Clear Adhesive) optical adhesive.

[0103] It should be noted that the accommodating space of the cover plate 2 refers to the side where the center of the first curved surface 23 is located. After the first curved surface 23 is connected with the first flat surface 21 and the second flat surface 22, it forms a semi-enclosed structure. The accommodating space of the semi-enclosed structure is the accommodating space of the cover plate 2.

[0104] A support plate 3 is provided on the side of the display panel 1 away from the cover plate 2, that is, on the side of the display panel 1 opposite to the display surface. The support plate 3 provides support for the display panel 1.

[0105] Specifically, refer to Figure 4 and Figure 5 As shown, the support plate 3 may include a first layer 31, a second layer 32, and a third layer 33. The first layer 31 is located on the side of the display panel 1 away from the cover plate, the second layer 32 is located on the side of the first layer 31 away from the cover plate, and the second layer 32 is also located on the side of the first layer 31 away from the cover plate.

[0106] Specifically, the first layer 31 may include a first portion 311, a second portion 312, and a third portion 313 connected in sequence. The second portion 312 forms a first curved surface support portion 3b. The second portion 312 is attached to the side of the display panel 1 away from the first curved surface. The thickness of the second portion 312 is greater than the thickness of the first portion 311, and the thickness of the second portion 312 is greater than the thickness of the third portion 313. Of course, the thicknesses of the first portion 311, the second portion 312, and the third portion 313 can be the same.

[0107] The second layer 32 is disposed on the side of the first part 311 away from the display panel 1, and the second layer 32 and the first part 311 form the second flat support part 3c, that is, the second flat support part 3c may include the second layer 32 and the first part 311; the modulus of the first layer 31 is less than the modulus of the second layer 32, thereby making the modulus of the second flat support part 3c greater than the modulus of the first curved support part 3b.

[0108] The third layer 33 is located on the side of the third part 313 away from the display panel 1, and the third layer 33 and the third part 313 form the first flat support part 3a, that is, the first flat support part 3a may include the third layer 33 and the third part 313; the modulus of the first layer 31 is less than the modulus of the third layer 33, so that the modulus of the first flat support part 3 is greater than the modulus of the first curved support part 3b. This makes the support plate 3 have sufficient strength to support the display panel 1, while the support plate 3 opposite to the first curved part 23 only includes the second part 312 of the first layer 31 with a smaller modulus, so that the support plate 3 has sufficient flexibility and is not easy to warp or bulge when bent, thereby avoiding warping or bulging of the display panel 1.

[0109] The thickness of the second part 312 is equal to the sum of the thickness of the first part 311 and the thickness of the second layer 32, and the thickness of the second part 312 is equal to the sum of the thickness of the third part 313 and the thickness of the third layer 33, so that the overall thickness of the support plate 3 is consistent and the unevenness of the support plate 3 is avoided.

[0110] The thickness of the second layer 32 and the third layer 33 is greater than or equal to 15 micrometers and less than or equal to 200 micrometers. The thickness of the first part 311 and the third part 313 is greater than or equal to 10 micrometers and less than or equal to 200 micrometers. Therefore, the thickness of the second part 312 is greater than or equal to 25 micrometers and less than or equal to 400 micrometers.

[0111] The first layer 31 can be made of foam, while the second layer 32, the third layer 33, and the fourth layer 34 can be made of SUS304 stainless steel sheet.

[0112] Of course, in other exemplary embodiments of this disclosure, the thickness of the second part 312 may be greater than or less than the sum of the thickness of the first part 311 and the thickness of the second layer 32, and the thickness of the second part 312 may be greater than or less than the sum of the thickness of the third part 313 and the thickness of the third layer 33; moreover, the material of the first layer 31 may be a flexible material such as rubber or flexible resin, and the materials of the second layer 32 and the third layer 33 may be stainless steel plates, rigid plastic plates, etc. of other components.

[0113] The second layer 32 and the third layer 33 are disposed on the side of the first layer 31 away from the display panel 1, that is, the first layer 31 is in direct contact with the display panel 1. The first layer 31 has a certain degree of elasticity to avoid damage to the display panel 1 by the second layer 32 and the third layer 33 during bending. Moreover, the display panel 1 needs to be powered when it is working. The first layer 31 is generally an insulating material, while the second layer 32 and the third layer 33 are generally conductive materials. The first layer 31 can further play an insulating role.

[0114] The length of the support plate 3 is greater than or equal to the length of the display panel 1, and the width of the support plate 3 is greater than or equal to the width of the display panel 1.

[0115] The lengths of the second layer 32 and the third layer 33 can be the same as the length of the support plate 3. The width of the second layer 32 can be the same as the width of the first planar portion 21, and the width of the third layer 33 can be the same as the width of the second planar portion 22. Alternatively, in some other exemplary embodiments of this disclosure, multiple second layers 32 can be provided, each in a strip shape, arranged parallel to each other on the side of the first portion 311 away from the display panel 1. In this case, the width of each second layer 32 is relatively small, and adjacent second layers 32 can be spaced apart or not spaced apart. Similarly, multiple third layers 33 can also be provided, each in a strip shape, arranged parallel to each other on the side of the third portion 313 away from the display panel 1. In this case, the width of each third layer 33 is relatively small, and adjacent third layers 33 can be spaced apart or not spaced apart.

[0116] In this example implementation, please continue to refer to Figure 2 As shown, a protective layer 5 is also provided between the display panel 1 and the support plate 3; the protective layer 5 is bonded to the display panel 1 by a second adhesive layer 6, which can be a pressure-sensitive adhesive. The protective layer 5 is bonded to the support plate 3 by a third adhesive layer 7, which can also be an OCA optical adhesive. The third adhesive layer 7 can act as a buffer between the display panel 1 and the support plate 3, reducing the risk of cracking of the display panel 1 during the wraparound bonding process.

[0117] Furthermore, the structure of the cover plate 2 is not limited to the above description. In another exemplary embodiment of this disclosure, refer to... Figure 6 and Figure 7 As shown, the cover plate 2 may also include a second curved surface 24, which is smoothly connected to the side of the first flat surface 21 away from the first curved surface 23. The second curved surface 24 and the first curved surface 23 are curved toward the same side of the first flat surface 21. The orthographic projection of the second curved surface 24 on the first reference plane is arc-shaped, for example, it may be a quarter circle arc or an elliptical arc, a third circle arc or an elliptical arc, etc.

[0118] Specifically, the second curved surface 24 may include a third curved surface and a fourth curved surface disposed opposite to each other. The third curved surface is connected to the first plane and is tangent to the first plane; the fourth curved surface is connected to the second plane and is tangent to the second plane, so that the second curved surface 24 is smoothly connected to the first flat surface 21.

[0119] Furthermore, the center of the second curved surface 24 and the center of the first curved surface 23 are located on the same side of the first flat surface 21, that is, the second curved surface 24 and the first curved surface 23 are curved toward the same side of the first flat surface 21.

[0120] The orthographic projection of the second curved surface 24 onto the first reference plane is a quarter-circle arc. Specifically, the orthographic projection of the third curved surface onto the first reference plane is a quarter-circle arc, and the orthographic projection of the fourth curved surface onto the first reference plane is also a quarter-circle arc; the two quarter-circle arcs are parallel to each other, and the two quarter-circle arcs are connected to form a quarter-circle arc shape.

[0121] Furthermore, in this example embodiment, the width of the second flat portion 22 is smaller than the width of the first flat portion 21, so that the cover plate 2 has a sufficiently large gap, allowing the robotic arm of the bonding system to slide within the gap and complete the bonding process between the cover plate 2 and the display panel.

[0122] In this case, after the display panel 1 and the cover plate 2 are attached, two flat areas and two curved areas are formed; one flat area is attached to the first flat portion 21 of the cover plate 2, and the length and width of the flat area are basically the same as the length and width of the first flat portion 21; the other flat area is attached to the second flat portion 22 of the cover plate 2, and the length and width of the flat area are basically the same as the length and width of the second flat portion 22; one curved area is attached to the first curved portion 23 of the cover plate 2, and the length and width of the curved area are basically the same as the length and width of the first curved portion 23, and the curved area is bent to form a semi-circular arc; the other curved area is attached to the second curved portion 24 of the cover plate 2, and the length and width of the curved area are basically the same as the length and width of the second curved portion 24, and the curved area is bent to form a quarter-circular arc.

[0123] Similarly, in order to correspond with the cover plate 2 mentioned above, refer to Figure 8 As shown, the support plate may further include a second curved support portion 3d, which is connected to the side of the first flat support portion 3a away from the first curved support portion 3b, and is attached to the side of the display panel away from the second curved surface. The modulus of the second curved support portion 3d is less than the modulus of the first flat support portion 3a, and the modulus of the second curved support portion 3d is less than the modulus of the second flat support portion 3c.

[0124] The support plate can also be configured as a double-layer plate structure. The first layer 31 can also include a fourth part 314, which is connected to the third part 313. The fourth part 314 forms the second arc-shaped support part 3d. The thickness of the fourth part 314 is the same as the thickness of the second part 312, that is, the thickness of the fourth part 314 can be greater than or equal to 25 micrometers and less than or equal to 300 micrometers.

[0125] Specifically, the support plate may include a first layer 31, a second layer 32, and a third layer 33; the first layer 31 includes a first part 311, a second part 312, a third part 313, and a fourth part 314 that are interconnected. The thickness of the second part 312 is the same as the thickness of the fourth part 314, and the thickness of the first part 311 is the same as the thickness of the third part 313. The thickness of the first part 311 is less than the thickness of the second part 312.

[0126] The second part 312 forms a first curved support portion 3b, which is attached to the side of the display panel away from the first curved surface. The fourth part 314 forms a second curved support portion 3d, which is attached to the side of the display panel away from the second curved surface. A second layer 32 is provided on the side of the first part 311 away from the display panel. The first part 311 and the second layer 32 form a second flat support portion 3c. The first part 311 is attached to the side of the display panel away from the second flat surface, and the second layer 32 is attached to the side of the first part 311 away from the second flat surface. A third layer 33 is provided on the side of the third part 313 away from the display panel. The third part 313 and the third layer 33 form a first flat support portion 3a. The third part 313 is attached to the side of the display panel away from the first flat surface, and the third layer 33 is attached to the side of the third part 313 away from the first flat surface.

[0127] The width of the first part 311 is less than the width of the third part 313, and the width of the second layer 32 is less than the width of the third layer 33.

[0128] In yet another exemplary embodiment of this disclosure, reference is made to Figure 9As shown, there can be two first curved surfaces 23, which are symmetrically and smoothly connected to opposite sides of the first flat surface 21. The connection structure between the first curved surfaces 23 and the first flat surface 21 has been described in detail above, and therefore will not be repeated here. There are two second flat surfaces 22, which are symmetrically and smoothly connected to the other side of the two first curved surfaces 23, i.e., one second flat surface 22 connects to one first curved surface 23. A gap is provided between the two second flat surfaces 22, i.e., the sum of the widths of the two second flat surfaces 22 is less than the width of the first flat surface 21, so that the robotic arm of the bonding system can slide within the gap to complete the bonding process between the cover plate 2 and the display panel. In the above example embodiment, the widths of the two second flat surfaces 22 are the same. It should be noted that the widths of the two second flat surfaces 22 can also be different.

[0129] In this case, after the display panel 1 and the cover plate 2 are attached, three planar areas and two curved areas are formed. One planar area is attached to the first planar portion 21 of the cover plate 2, and the length and width of the planar area are basically the same as the length and width of the first planar portion 21. The other two planar areas are attached to the second planar portion 22 of the cover plate 2, and the length and width of the two planar areas are basically the same as the length and width of the second planar portion 22. The two curved areas are attached to the two first curved portions 23 of the cover plate 2, and the length and width of the two curved areas are basically the same as the length and width of the first curved portions 23. The two curved areas are bent to form a semi-circular arc.

[0130] Similarly, in order to correspond with the cover plate 2 mentioned above, refer to Figure 10 As shown, the support plate 3 has two first arc-shaped support portions 3b, which are connected to the opposite sides of the first straight support portion 3a; the support plate 3 has two second straight support portions 3c, which are connected to the opposite side of the two first arc-shaped support portions 3b.

[0131] The support plate can also be configured as a double-layer plate structure. The first layer 31 can further include a fifth part 315 and a sixth part 316; the fifth part 315 is connected to the third part 313, and the fifth part 315 forms another first arc-shaped support part 3b, the thickness of the fifth part 315 is the same as the thickness of the second part 312; the sixth part 316 is connected to the fifth part 315, and the thickness of the sixth part 316 is equal to the thickness of the third part 313. The support plate can also include a fourth layer 34, the fourth layer 34 is disposed on the side of the sixth part 316 away from the display panel, and forms another second flat support part 3c with the sixth part 316, the modulus of the fourth layer 34 is greater than the modulus of the first layer 31.

[0132] Specifically, the support plate may include a first layer 31, a second layer 32, a third layer 33, and a fourth layer 34; the first layer 31 may include a first part 311, a second part 312, a third part 313, a fifth part 315, and a sixth part 316 that are interconnected. The thickness of the second part 312 is the same as the thickness of the fifth part 315, and the thicknesses of the first part 311, the third part 313, and the sixth part 316 are all the same. The thickness of the first part 311 is less than the thickness of the second part 312.

[0133] The second part 312 forms a first curved support portion 3b, which is attached to the side of the display panel away from one of the first curved surfaces. The fifth part 315 forms another first curved support portion 3b, which is attached to the side of the display panel away from the other first curved surface. A second layer 32 is provided on the side of the first part 311 away from the display panel. The first part 311 and the second layer 32 form a second flat support portion 3c. The first part 311 is attached to the side of the display panel away from the second flat surface, and the second layer 32 is attached to the side of the first part 311 away from the second flat surface. A third layer 33 is provided on the side of the third part 313 away from the display panel. The third part 313 and the third layer 33 form a first flat support portion 3a. The third part 313 is attached to the side of the display panel away from the first flat surface, and the third layer 33 is attached to the side of the third part 313 away from the first flat surface. A fourth layer 34 is provided on the side of the sixth part 316 away from the display panel. The sixth part 316 and the fourth layer 34 form another second flat support part 3c. The sixth part 316 is attached to the side of the display panel away from the second flat part, and the fourth layer 34 is attached to the side of the sixth part 316 away from the second flat part.

[0134] The width of the first part 311 is equal to the width of the sixth part 316, the width of the second part 312 is equal to the width of the fifth part 315, and the width of the first part 311 is less than the width of the third part 313. The width of the second layer 32 is less than the width of the third layer 33, and the width of the second layer 32 is equal to the width of the fourth layer 34.

[0135] In addition, in some other exemplary embodiments of this disclosure, a plurality of fourth layers 34 may be provided, the fourth layers 34 being strip-shaped, and the plurality of fourth layers 34 being arranged parallel to each other on the side of the sixth part 316 away from the display panel 1. In this case, the width of each fourth layer 34 is small, and adjacent fourth layers 34 may be spaced apart or not spaced apart.

[0136] It should be noted that the first layer 31, the second layer 32, the third layer 33, and the fourth layer 34 mentioned above are only used to refer to different structural parts and are not used to limit the stacking order of the film layers.

[0137] Furthermore, this exemplary embodiment also provides a bonding system for bonding the display device described in any of the above. The bonding system may include a worktable, a carrier film 8, a clamping part 9, a robotic arm 10, and a slider 11, etc. The worktable can be used to fix the cover plate 2; the carrier film 8 can be used to bond the support plate 3 and the display panel 1 in sequence; the clamping part 9 can be used to clamp the opposite ends of the carrier film 8; the slider 11 is connected to one end of the robotic arm 10, the carrier film 8 surrounds the slider 11, and the robotic arm 10 is used to drive the slider 11 to move so that the display panel 1 and the cover plate 2 are bonded.

[0138] In this example embodiment, one end of the robotic arm 10 can be fixed to the worktable. The other end of the robotic arm 10 is connected to the slider 11, and the robotic arm 10 can drive the slider 11 to move. The bonding system may also include a clamping arm (not shown in the figure), one end of which is fixed to the worktable, and the other end of which is connected to a clamping part 9; two clamping arms are provided, and two corresponding clamping parts 9 are also provided, with a one-to-one correspondence between the clamping arms and the clamping parts 9. The two clamping parts 9 clamp the opposite ends of the carrier film 8 in a one-to-one correspondence. The clamping arms can drive the clamping parts 9 to move.

[0139] It should be noted that the opposite ends of the carrier membrane 8 refer to the opposite ends in the second direction when the carrier membrane 8 is in the unfolded state.

[0140] In this example embodiment, the material of the carrier film 8 may be high molecular weight polyethylene polypropylene (PPF).

[0141] In order to correspond with the cover plate 2 of the three example embodiments described above, the slider 11 can also be configured with three structures. The structure of the slider 11 will be described in detail below.

[0142] Slider 11 can be set to a cuboid shape. Specifically, corresponding to Figure 3 The cover plate 2 shown is referenced. Figure 5 As shown, the slider 11 may include a first flat surface, a second flat surface, and a first arc surface; the second flat surface is opposite to and parallel to the first flat surface, and the length and width of the second flat surface may be the same as the length and width of the first flat surface; the first arc surface is smoothly connected between the first flat surface and the second flat surface, that is, one end of the first arc surface is smoothly connected to one end of the first flat surface, and the other end of the first arc surface is smoothly connected to one end of the second flat surface; the first arc surface may be a semi-circular arc surface, a semi-elliptical arc surface, a semi-parabolic arc surface, etc.

[0143] The bonding system may also include a protrusion 111, which is disposed on the second flat surface and has a first gap 112 between the protrusion 111 and the second flat surface, and one end of the carrier film 8 can pass through the first gap 112.

[0144] The cover plate 2 is fixed to the worktable, and the first flat portion 21 of the cover plate 2 is closer to the worktable than the second flat portion 22. After the clamping portion 9 clamps the carrier film 8, it is pulled towards the second flat portion 22. The carrier film 8, which is surrounded by the second flat surface of the slider 11, will be pulled up under the pulling force of the clamping portion 9, causing the carrier film 8 to not surround the second flat surface. The protrusion 111 and the first gap 112 are provided so that the carrier film 8 passes through the first gap 112, which can prevent the carrier film 8 from being pulled up and not surrounding the second flat surface.

[0145] When the display panel 1 and the cover plate 2 are attached, the first flat surface is opposite to the first flat portion 21, and the first flat surface of the slider 11 applies pressure to the display panel 1, so that the display panel 1 is attached to the first flat portion 21; the second flat surface is opposite to the second flat portion 22, and the second flat surface of the slider 11 applies pressure to the display panel 1, so that the display panel 1 is attached to the second flat portion 22; the first arc surface is opposite to the first curved portion 23, and the first arc surface of the slider 11 applies pressure to the display panel 1, so that the display panel 1 is attached to the first curved portion 23.

[0146] Corresponding to Figure 6 The cover plate 2 shown is referenced. Figure 11 As shown, the slider 11 may include a first flat surface, a second flat surface, a first arc surface, and a second arc surface. The second flat surface is opposite to and parallel to the first flat surface. The length of the second flat surface may be the same as the length of the first flat surface, but the width of the second flat surface may be different from the width of the first flat surface. The first arc surface is smoothly connected between the first flat surface and the second flat surface, that is, one end of the first arc surface is smoothly connected to one end of the first flat surface, and the other end of the first arc surface is smoothly connected to one end of the second flat surface. The first arc surface is a semi-circular arc surface. The second arc surface is smoothly connected to the side of the first flat surface away from the first arc surface. The second arc surface may be a quarter-circular arc surface, a quarter-elliptical arc surface, a quarter-parabolic arc surface, a third-circular arc surface, etc.

[0147] The bonding system may also include a protrusion 111, which is disposed on the second flat surface and has a first gap 112 between the protrusion 111 and the second flat surface, and one end of the carrier film 8 can pass through the first gap 112.

[0148] The cover plate 2 is fixed to the worktable, and the first flat portion 21 of the cover plate 2 is closer to the worktable than the second flat portion 22. After the clamping portion 9 clamps the carrier film 8, it is pulled tight towards the second flat portion 22. The carrier film 8, which is surrounded by the second flat surface of the slider 11, will be pulled up under the pulling force of the clamping portion 9 and will not surround the second flat surface. A protrusion 111 and a first gap 112 are provided. The carrier film 8 passes through the first gap 112, which can prevent the carrier film 8 from being pulled up and not surrounding the second flat surface.

[0149] When the display panel 1 and the cover plate 2 are attached, the first flat surface is opposite to the first flat portion 21, and the first flat surface of the slider 11 applies pressure to the display panel 1, so that the display panel 1 is attached to the first flat portion 21; the second flat surface is opposite to the second flat portion 22, and the second flat surface of the slider 11 applies pressure to the display panel 1, so that the display panel 1 is attached to the second flat portion 22; the first arc surface is opposite to the first curved portion 23, and the first arc surface of the slider 11 applies pressure to the display panel 1, so that the display panel 1 is attached to the first curved portion 23; the second arc surface is opposite to the second curved portion 24, and the second arc surface of the slider 11 applies pressure to the display panel 1, so that the display panel 1 is attached to the second curved portion 24.

[0150] Corresponding to Figure 9 The cover plate 2 shown is referenced. Figure 12 As shown, the slider 11 may include a first flat surface, two second flat surfaces, and two first arc surfaces. The two first arc surfaces are symmetrically and smoothly connected between the first flat surface and the second flat surface. One end of the first arc surface is smoothly connected to one end of the first flat surface, and the other end of the first arc surface is smoothly connected to one end of the second flat surface. The two second flat surfaces are symmetrically and smoothly connected to the two first arc surfaces. The second flat surface is opposite to and parallel to the first flat surface. The length of the second flat surface may be the same as the length of the first flat surface, but the width of the second flat surface may be different from the width of the first flat surface. The first arc surfaces are smoothly connected between the first flat surface and the second flat surface, that is, one end of the first arc surface is smoothly connected to one end of the first flat surface, and the other end of the first arc surface is smoothly connected to one end of the second flat surface. The first arc surface is a semi-circular arc surface.

[0151] The bonding system may further include a protrusion 111, which is disposed on the second flat surface, and there are two first gaps 112 between the protrusion 111 and the second flat surface. Two second gaps 113 are also disposed on the protrusion 111, and the extending direction of the second gaps 113 intersects the extending direction of the first gaps 112, for example, it may be perpendicular. The two second gaps 113 are correspondingly connected to the two first gaps 112. One end of the carrier film 8 can pass through one first gap 112 and one second gap 113, and the other end of the carrier film 8 can pass through the other first gap 112 and the other second gap 113. Alternatively, in other exemplary embodiments of this disclosure, the two first gaps 112 can be connected to form one first gap 112, and both ends of the carrier film 8 can be inserted from both sides of the first gap 112. The second gap 113 can also be a single, wider gap to accommodate two layers of carrier film 8 simultaneously, ensuring that the two layers of carrier film 8 do not interfere with each other during movement.

[0152] The cover plate 2 is fixed to the worktable, and the first flat portion 21 of the cover plate 2 is closer to the worktable than the second flat portion 22. After the clamping portion 9 clamps the carrier film 8, it is pulled tight towards the second flat portion 22. The carrier film 8, which is surrounded by the second flat surface of the slider 11, will be pulled up under the pulling force of the clamping portion 9 and will not surround the second flat surface. The protrusion 111, the first gap 112 and the second gap 113 are provided. The carrier film 8 passes through the first gap 112 and the second gap 113, which can prevent the carrier film 8 from being pulled up and not surrounding the second flat surface.

[0153] When the display panel 1 and the cover plate 2 are attached, the first flat surface is opposite to the first flat portion 21, and the first flat surface of the slider 11 applies pressure to the display panel 1, so that the display panel 1 is attached to the first flat portion 21; the second flat surface is opposite to the second flat portion 22, and the second flat surface of the slider 11 applies pressure to the display panel 1, so that the display panel 1 is attached to the second flat portion 22; the first arc surface is opposite to the first curved portion 23, and the first arc surface of the slider 11 applies pressure to the display panel 1, so that the display panel 1 is attached to the first curved portion 23.

[0154] Furthermore, this disclosure also provides a bonding method for bonding the display device described in any one of the above claims using the bonding system described in any one of the above claims, referring to... Figure 13 As shown, the bonding method may include the following steps:

[0155] Step S10: The support plate 3 and the display panel 1 are sequentially bonded to one side of the carrier film 8, and a first adhesive layer 4 is formed on the side of the display panel 1 away from the carrier film 8.

[0156] Step S20: The carrier film 8 is wrapped around the slider 11, and the display panel 1 is shaped by clamping the opposite ends of the carrier film 8 with the clamping part 9.

[0157] In step S30, the robotic arm 10 drives the slider 11 to move along the first direction to the receiving space of the cover plate 2.

[0158] In step S40, the robotic arm 10 drives the slider 11 to move along the second direction so that the display panel 1 contacts the first curved surface. The robotic arm 10 drives the slider 11 to slide along the first curved surface to complete the bonding of the display panel 1 with the first curved surface.

[0159] In step S50, the robotic arm 10 drives the slider 11 to move in a direction perpendicular to the first flat part to complete the bonding of the display panel 1 with the first flat part.

[0160] The bonding method will be explained in detail below.

[0161] It should be noted that the carrier film 8 surrounds the slider 11, approximately around three sides of the slider 11, but does not completely surround the slider 11.

[0162] A support plate 3 is attached to one side of the carrier film 8. A third adhesive layer 7 is applied to the side of the support plate 3 away from the carrier film 8. A protective layer 5 is attached to the side of the third adhesive layer 7 away from the carrier film 8. A second adhesive layer 6 is applied to the side of the protective layer 5 away from the carrier film 8. A display panel 1 is attached to the side of the second adhesive layer 6 away from the carrier film 8. A first adhesive layer 4 is applied to the side of the display panel 1 away from the carrier film 8.

[0163] The adhesion between the support plate 3 and the protective layer 5 is 12N / 25mm. 2 That is, the adhesion of the third adhesive layer 7 is 12N / 25mm. 2 The adhesion between the support plate 3 and the carrier film 8 is 2000 gf / inch, and the adhesion after UV de-adhesion is <10 gf / inch. The adhesion between the support plate 3 and the carrier film 8 is less than the adhesion between the support plate 3 and the protective layer 5, so that when the carrier film 8 is peeled off from the support plate 3 after the display panel 1 is bonded, the support plate 3 will not be peeled off from the protective layer 5.

[0164] Reference Figure 5 , Figure 11 , Figure 12 As shown, the carrier film 8 is surrounded around the slider 11 and passes through the first gap 112 or the first gap 112 and the second gap 113; the carrier film 8 is clamped at the opposite ends by the clamping part 9 and the carrier film 8 is stretched to conform to the shape of the display panel 1.

[0165] The robotic arm 10 drives the slider 11 to move along the first direction, so that the slider 11 and the various membrane layers surrounding it move to the receiving space of the cover plate 2.

[0166] for Figure 3 The cover plate 2 shown is referenced. Figure 14 As shown in the figure, the arrow indicates the direction of movement. At this time, both clamping parts 9 are in the tensioned position, so that the carrier film 8 is in a tensioned state; the robotic arm 10 drives the slider 11 to move towards the side closer to the first curved surface 23 until the display panel 1 and the first curved surface 23 are attached to form a shape as shown in the figure. Figure 15The structure shown in the figure indicates the direction of movement, with the arrows pointing in the direction of the arrows. At this point, the lower clamping parts 9 are in the tensioned position, while the upper clamping parts 9 are in the relaxed position. This ensures that the lower half of the carrier film 8 is in a tensioned state, while the upper half is in a relaxed state, preventing defects such as bubbles and wrinkles during the subsequent bonding of the lower half. The robotic arm 10 moves the slider 11 downwards along the first curved surface 23 by approximately a quarter arc, causing the display panel 1 to bond with the lower half of the first curved surface 23. Then, the robotic arm 10 continues to move the slider 11 downwards, moving it closer to the first flat surface 21, until the display panel 1 is bonded to the first flat surface 21. First, the flat portion 21 is adhered; then, the lower clamping portions 9 are all in the relaxed position, and the upper clamping portions 9 are all in the tensioned position, so that the lower half of the carrier film 8 is in a relaxed state and the upper half is in a tensioned state, to avoid defects such as bubbles and wrinkles during the subsequent adhesion of the upper half. The robotic arm 10 drives the slider 11 to move upward along the first curved surface 23 by about half an arc, so that the display panel 1 is completely adhered to the first curved surface 23. Then, the robotic arm 10 drives the slider 11 to continue to move upward, that is, the robotic arm 10 drives the slider 11 to move towards the side closer to the second flat portion 22, until the display panel 1 and the second flat portion 22 are adhered to form a shape as shown. Figure 16 The structure shown; finally, the robotic arm 10 drives the slider 11 out of the receiving space of the cover plate 2. Of course, it is also possible to first move upward along the first curved surface 23 to complete the bonding of the display panel 1 with the upper half of the first curved surface 23, and the bonding of the display panel 1 with the second flat surface 22; then, move downward along the first curved surface 23 to complete the complete bonding of the display panel 1 with the first curved surface 23, and the bonding of the display panel 1 with the first flat surface 21.

[0167] for Figure 6 The cover plate 2 shown is referenced. Figure 17 As shown in the figure, the arrow indicates the direction of movement. At this time, both clamping parts 9 are in the tensioned position, so that the entire carrier film 8 is in a tensioned state; the robotic arm 10 drives the slider 11 to move towards the side closer to the first curved surface 23 until the display panel 1 and the first curved surface 23 are attached to form a shape as shown in the figure. Figure 18The structure shown in the figure indicates the direction of movement. At this point, the lower clamping parts 9 are in the tensioned position, and the upper clamping parts 9 are in the relaxed position. This ensures that the lower half of the carrier film 8 is tensioned, while the upper half is relaxed, preventing defects such as bubbles and wrinkles during subsequent bonding of the lower half. The robotic arm 10 moves the slider 11 downwards along the first curved surface 23 by approximately a quarter arc, bonding the display panel 1 to the lower half of the first curved surface 23. Then, the lower clamping parts 9 are relaxed, and the upper clamping parts 9 are relaxed. All clamping parts 9 are in the tensioned position, so that the lower half of the carrier film 8 is in a relaxed state and the upper half is in a tensioned state, avoiding defects such as bubbles and wrinkles during the subsequent bonding of the upper half. The robotic arm 10 drives the slider 11 to move upward along the first curved surface 23 by about half an arc, so that the display panel 1 is completely bonded to the first curved surface 23. Then the robotic arm 10 drives the slider 11 to continue to move upward, that is, the robotic arm 10 drives the slider 11 to move towards the side closer to the second flat surface 22, until the display panel 1 and the second flat surface 22 are bonded together to form a shape like... Figure 19 The structure shown in the figure, with the arrows indicating the direction of movement, has the lower clamping parts 9 in the tensioned position and the upper clamping parts 9 in the relaxed position. This ensures that the lower half of the carrier film 8 is in a tensioned state and the upper half is in a relaxed state, preventing defects such as bubbles and wrinkles during the subsequent bonding of the lower half. The robotic arm 10 moves the slider 11 towards the side closer to the first flat part 21 until the display panel 1 is bonded to the first flat part 21 to form a shape as shown in the figure. Figure 20 The structure shown in the figure, with the arrow indicating the direction of movement, involves the robotic arm 10 driving the slider 11 to move towards the side closer to the second curved surface 24, forming a shape as shown. Figure 21 The structure shown in the figure indicates the direction of movement, indicated by the arrow. Then, the robotic arm 10 moves the slider 11 upwards along the second curved surface 24 by approximately a quarter arc until the display panel 1 and the second curved surface 24 are completely aligned, forming a shape as shown. Figure 22 The structure is shown. Finally, the robotic arm 10 drives the slider 11 out of the receiving space of the cover plate 2.

[0168] for Figure 9 The cover plate 2 shown is referenced. Figure 23 As shown in the figure, the arrow indicates the direction of movement. At this time, both clamping parts 9 are in the tensioned position, so that the entire carrier film 8 is in a tensioned state; the robotic arm 10 drives the slider 11 to move upward until the display panel 1 is attached to the upper edge of the first curved part 23 on the left to form a shape as shown in the figure. Figure 24The structure shown in the figure indicates the direction of movement, with the arrows pointing in the direction of the arrows. At this point, the clamping parts 9 on the right are in the tensioned position, while those on the left are in the relaxed position. This results in the right half of the carrier film 8 being in a tensioned state and the left half in a relaxed state. The robotic arm 10 moves the slider 11 downwards along the left first curved surface 23 by approximately half an arc, causing the display panel 1 to completely adhere to the left first curved surface 23. Then, the robotic arm 10 continues to move the slider 11 downwards, moving it closer to the first flat surface 21, until the display panel 1 adheres to the first flat surface 21, forming a... Figure 25 The structure shown in the diagram indicates the direction of movement (arrows point to the direction of the movement). The robotic arm 10 moves the slider 11 upwards along the right-side first curved surface 23 by approximately half an arc, ensuring the display panel 1 is fully aligned with the right-side first curved surface 23. Then, both clamping parts 9 are in the tensioned position, keeping the carrier film 8 under tension. The robotic arm 10 continues to move the slider 11 upwards, moving it closer to the second flat surface 22, until the display panel 1 and the second flat surface 22 are aligned as shown. Figure 26 The structure is shown. Finally, the robotic arm 10 drives the slider 11 out of the receiving space of the cover plate 2.

[0169] It should be noted that although the steps of the bonding method in this disclosure are described in a specific order in the accompanying drawings, this does not require or imply that the steps must be performed in that specific order, or that all the steps shown must be performed to achieve the desired result. Additional or alternative steps may be omitted, multiple steps may be combined into one step, and / or one step may be broken down into multiple steps.

[0170] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. A display device, wherein, The cover plate comprises at least a first flat surface, a second flat surface and a first curved surface, the first curved surface is smoothly connected between the first flat surface and the second flat surface, the second flat surface is parallel to the first flat surface, the first curved surface extends along a first direction, a normal projection of the first curved surface on a first reference surface is arc-shaped, the first reference surface is perpendicular to the first direction, the first flat surface, the second flat surface and the first curved surface enclose a containing space; The display panel is arranged in the containing space; The support plate comprises at least a first flat support part, a first curved support part and a second flat support part connected in sequence, the modulus of the first curved support part is smaller than the modulus of the first flat support part, and the modulus of the first curved support part is smaller than the modulus of the second flat support part; The first flat support part is attached to a side of the display panel away from the first flat surface, the first curved support part is attached to a side of the display panel away from the first curved surface, and the second flat support part is attached to a side of the display panel away from the second flat surface; the support plate comprises: A first layer comprises at least a first part, a second part and a third part connected in sequence, the second part forms the first curved support part; At least one second layer is arranged on a side of the first part away from the display panel, and forms the second flat support part with the first part, the modulus of the first layer is smaller than the modulus of the second layer; At least one third layer is arranged on a side of the third part away from the display panel, and forms the first flat support part with the third part, the modulus of the first layer is smaller than the modulus of the third layer. The thickness of the second part is greater than the thickness of the first part, and the thickness of the second part is greater than the thickness of the third part.

2. The display device according to claim 1, wherein The thickness of the second part is equal to the sum of the thickness of the first part and the thickness of the second layer, and the thickness of the second part is equal to the sum of the thickness of the third part and the thickness of the third layer.

3. The display device according to claim 2, wherein The thickness of the second layer and the third layer is greater than or equal to 15 microns and less than or equal to 200 microns; the thickness of the first part and the thickness of the third part are greater than or equal to 10 microns and less than or equal to 200 microns.

4. The display device according to claim 1, wherein The width of the second flat surface in the second direction is less than or equal to the width of the first flat surface in the second direction, and the second direction is perpendicular to the first direction.

5. The display device according to claim 1, wherein The width of the first flat support part in the second direction is less than or equal to the width of the second flat support part in the second direction.

6. The display device of claim 5, wherein, The cover plate further comprises:

7. The display device according to claim 1, wherein A second curved surface is smoothly connected to a side of the first flat surface away from the first curved surface, and the second curved surface is curved to the same side of the first flat surface as the first curved surface, and a normal projection of the second curved surface on the first reference surface is arc-shaped. The support plate further comprises:

8. The display device of claim 7, wherein, ​ A second curved supporting part is connected to the side of the first flat supporting part away from the first curved supporting part and is attached to the side of the display panel away from the second curved part. The modulus of the second curved supporting part is less than the modulus of the first flat supporting part and the modulus of the second curved supporting part is less than the modulus of the second flat supporting part.

9. The display device of claim 8, wherein, The first layer further comprises: A fourth part is connected to the third part. The fourth part forms the second curved supporting part. The thickness of the fourth part is the same as the thickness of the second part.

10. The display device according to claim 1, wherein The first curved part is provided in two. The two first curved parts are connected to the opposite sides of the first flat part. The second flat part is provided in two. The two second flat parts are connected to the opposite sides of the two first curved parts. A gap is provided between the two second flat parts.

11. The display device of claim 10, wherein, The first curved supporting part is provided in two. The two first curved supporting parts are connected to the opposite sides of the first flat supporting part. The second flat supporting part is provided in two. The two second flat supporting parts are connected to the opposite sides of the two first curved supporting parts.

12. The display device of claim 11, wherein, The first layer further comprises: A fifth part is connected to the third part. The fifth part forms the first curved supporting part. The thickness of the fifth part is the same as the thickness of the second part. A sixth part is connected to the fifth part. The thickness of the sixth part is the same as the thickness of the third part. The supporting plate further comprises: At least one fourth layer is provided on the side of the sixth part away from the display panel. The fourth layer forms the second flat supporting part with the sixth part. The modulus of the fourth layer is greater than the modulus of the first layer.

13. The display device of claim 1, wherein the material of the first flat supporting part and the second flat supporting part comprises stainless steel, and the material of the first curved supporting part comprises foam.

14. The display device according to any one of claims 1 to 13, wherein The display device further comprises: A first adhesive layer is attached between the cover plate and the display panel. A protective layer is provided between the display panel and the supporting plate. A second adhesive layer is attached between the display panel and the protective layer. A third adhesive layer is attached between the protective layer and the supporting plate.

15. The display device of claim 14, wherein, The first adhesive layer and the third adhesive layer are OCA optical adhesive, and the second adhesive layer is pressure sensitive adhesive.

16. A bonding system for bonding the display device according to any one of claims 1 to 15, wherein The attaching system comprises: A workbench is used to fix the cover plate. A carrier film is used to sequentially attach the supporting plate and the display panel. A clamping part is used to clamp the opposite ends of the carrier film. A slide is used to surround the carrier film. A mechanical arm is connected to the slide. The mechanical arm is used to move the slide to attach the display panel and the cover plate.

17. The application system of claim 16, wherein, The slide comprises: A first flat surface. A second flat surface is provided opposite to the first flat surface. A first circular arc surface is smoothly connected between the first flat surface and the second flat surface.

18. The application system of claim 17, wherein, The attaching system further comprises: A protrusion is provided on the second flat surface. A first gap is provided between the protrusion and the second flat surface. One end of the carrier film can pass through the first gap.

19. The application system of claim 18, wherein, The slide further comprises: A second arc surface is smoothly connected to a side of the first flat surface away from the first arc surface.

20. The application system of claim 18, wherein, The first arc surface is provided in two, and the second flat surface is provided in two, the two first arc surfaces being smoothly connected between the first flat surface and the two second flat surfaces; the protrusion is arranged between the two second flat surfaces; the first gap is provided in two, and the protrusion is further provided with a second gap, the extension direction of the second gap intersecting the extension direction of the first gap, the two second gaps being in communication with the two first gaps, and one end of the carrier film being capable of passing through one first gap and one second gap.

21. A method of conforming, wherein, The display device of any one of claims 1-15 is formed by the attaching system of any one of claims 16-20, and the attaching method comprises: attaching a support plate and a display panel in sequence on one side of the carrier film, and forming a first adhesive layer on a side of the display panel away from the carrier film; surrounding the carrier film around the slider, and clamping the display panel by clamping opposite ends of the carrier film through the clamping portion; moving the slider along a first direction to the accommodating space of the cover plate by the mechanical arm; moving the slider along a second direction by the mechanical arm to make the display panel contact the first curved portion, moving the slider along the first curved portion by the mechanical arm to complete the attaching of the display panel and the first curved portion; moving the slider along a direction perpendicular to the first flat portion by the mechanical arm to complete the attaching of the display panel and the first flat portion or the second flat portion.

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