Display panel, display motherboard and display device

Abstract

This invention discloses a display panel, a display motherboard, and a display device. The display panel includes a display area and a bending area, as well as a first blocking portion and a second blocking portion. The first blocking portion is located on a first side of the bending area, and the second blocking portion is located on a second side of the bending area. The first side and the second side are adjacent. The first side is the side of the bending area closest to the display area. By employing the above technical solution, the uniformity of the surface height of the organic film layer in the display area is improved, reducing the risk of defects in subsequent processing steps. These risks may include, but are not limited to, cracks and bulges caused by inconsistent surface height during the pressing of a four-curved display panel.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more particularly to a display panel, a display motherboard, and a display device. Background Technology

[0002] Organic light-emitting displays (OLEDs) are increasingly being used in various high-performance display fields due to their numerous advantages, such as being thinner and lighter, having higher brightness, lower power consumption, faster response, higher resolution, better flexibility, and higher luminous efficiency.

[0003] Existing organic electroluminescent displays typically employ thin-film encapsulation technology to protect their internal light-emitting devices. However, during the encapsulation process, the encapsulation material exhibits a certain degree of fluidity before curing. Due to this fluidity, subsequent film layers often exhibit significant differences in quality between the cured encapsulation film boundary and the display area encapsulation film, making it difficult for subsequent manufacturing processes to achieve the desired results and leading to a persistently high defect rate in display devices. Summary of the Invention

[0004] The present invention provides a display panel, a display motherboard, and a display device to reduce the step difference between the boundary of the encapsulation film layer and the encapsulation film layer of the display area, thereby improving product yield.

[0005] According to one aspect of the present invention, a display panel is provided, comprising: a display area and a bending area, as well as a first blocking portion and a second blocking portion;

[0006] The first blocking portion is located on the first side of the bending area, and the second blocking portion is located on the second side of the bending area; the first side and the second side are adjacent; wherein, the first side is the side of the bending area closer to the display area.

[0007] According to another aspect of the present invention, a display motherboard is provided, comprising: a display panel;

[0008] The display panel includes a display area and a bending area, as well as a first blocking part and a second blocking part;

[0009] The first blocking portion is located on the first side of the bending area, and the second blocking portion is located on the second side of the bending area; the first side and the second side are adjacent; wherein, the first side is the side of the bending area closer to the display area.

[0010] According to another aspect of the present invention, a display device is provided, comprising: the above-described display panel.

[0011] The technical solution of this invention, by providing a first blocking part on the first side of the bending area and a second blocking part on the second side of the bending area, can prevent organic materials in the display area from flowing into the bending area during the preparation of the display area, thus avoiding affecting the bending effect of the bending area. The first and second blocking parts can also effectively block the flow of organic materials at the boundary, preventing the thickness of the cured organic film layer at the boundary from decreasing. In addition, the second blocking part on the second side of the bending area can play a guiding role, allowing the organic materials to flow evenly during the formation process, preventing the organic materials from accumulating near the first or second blocking part, improving the uniformity of the surface height of the organic film layer in the display area and its surrounding area, and reducing the risk of defects in subsequent processes. Such risks may include, but are not limited to, cracks and bulges caused by inconsistent surface height during the pressing of a four-curved display panel.

[0012] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a top view structural diagram of a display panel provided in an embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram of the film layer structure of a display panel provided in an embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the film layer structure of the bending area of ​​a display panel provided in an embodiment of the present invention;

[0017] Figure 4 This is a schematic diagram of the film layer structure of another display panel provided in an embodiment of the present invention;

[0018] Figure 5 This is a schematic diagram of the film layer structure of another display panel provided in an embodiment of the present invention;

[0019] Figure 6 It is along Figure 1 A schematic diagram of a cross-sectional structure at section A-A';

[0020] Figure 7 It is along Figure 1A schematic diagram of another cross-sectional structure of section A-A';

[0021] Figure 8 It is along Figure 1 A schematic diagram of a cross-sectional structure at section B-B';

[0022] Figure 9 It is along Figure 1 A schematic diagram of another cross-sectional structure of section B-B';

[0023] Figure 10 This is a top view structural diagram of another display panel provided in an embodiment of the present invention;

[0024] Figure 11 It is along Figure 10 A schematic diagram of a cross-sectional structure at section C-C';

[0025] Figure 12 It is along Figure 10 A schematic diagram of another cross-sectional structure of section C-C';

[0026] Figure 13 It is along Figure 10 A schematic diagram of a cross-sectional structure at section D-D';

[0027] Figure 14 It is along Figure 10 A schematic diagram of another cross-sectional structure of section D-D';

[0028] Figure 15 This is a schematic diagram of the structure of a display motherboard provided in an embodiment of the present invention;

[0029] Figure 16 This is a schematic diagram of another display motherboard provided in an embodiment of the present invention;

[0030] Figure 17 This is a schematic diagram of another display motherboard provided in an embodiment of the present invention;

[0031] Figure 18 It is along Figure 17 A schematic diagram of a cross-sectional structure at section E-E';

[0032] Figure 19 This is a schematic diagram of another display motherboard provided in an embodiment of the present invention;

[0033] Figure 20 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention. Detailed Implementation

[0034] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0035] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0036] During the encapsulation process, the encapsulation material has a certain degree of fluidity and tends to flow towards the edges, resulting in a smaller thickness at the boundary of the cured encapsulation film layer. This leads to a significant difference between the boundary of the cured encapsulation film layer and the encapsulation film layer in the display area, which is not conducive to subsequent assembly and may cause problems such as film layer breakage and bulging, thus increasing the risk of defects in the display panel.

[0037] In addition, during the encapsulation process, the encapsulation material may flow into the bending area of ​​the display panel, increasing the thickness of the bending area, which is not conducive to bending, affects the bending effect, and may cause the connecting wires in the bending area to break.

[0038] To solve the above-mentioned technical problems, embodiments of the present invention provide a display panel, including: a display area and a bending area, as well as a first blocking part and a second blocking part; the first blocking part is located on a first side of the bending area, and the second blocking part is located on a second side of the bending area; the first side and the second side are adjacent; wherein, the first side is the side of the bending area closer to the display area.

[0039] By adopting the above technical solution, by setting a first blocking part on the first side of the bending area and a second blocking part on the second side of the bending area, it is possible to prevent the organic material in the display area from flowing into the bending area during the preparation of the display area, thus affecting the bending effect of the bending area. The first and second blocking parts can also effectively prevent the organic material from flowing at the boundary, preventing the thickness of the cured organic film layer at the boundary from decreasing. In addition, setting a second blocking part on the second side of the bending area can play a guiding role, allowing the organic material to flow evenly during the formation process, preventing the organic material from accumulating near the first or second blocking part, improving the uniformity of the surface height of the organic film layer in the display area and its surrounding area, and reducing the risk of defects in subsequent processes. Such risks may include, but are not limited to, cracks and bulges caused by inconsistent surface height during the pressing of the four-curved display panel.

[0040] The above is the core idea of ​​this invention. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention. The technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0041] Figure 1 This is a top view structural diagram of a display panel provided in an embodiment of the present invention, for reference. Figure 1 The display panel 01 includes a display area 10 and a bending area 20, as well as a first blocking part 30 and a second blocking part 40; the first blocking part 30 is located on the first side 201 of the bending area 20, and the second blocking part 40 is located on the second side 202 of the bending area 20; the first side 201 and the second side 202 are adjacent; wherein, the first side 201 is the side of the bending area 20 that is closer to the display area 10.

[0042] The display panel 01 can be a self-emissive display panel or a non-self-emissive display panel. The self-emissive display panel can include multiple light-emitting elements and multiple pixel driving circuits electrically connected to the light-emitting elements. The pixel driving circuits are used to drive the light-emitting elements to emit light. The non-self-emissive display panel provides a light source for display through a backlight module. The present invention does not limit the light emission mode of the display panel 01.

[0043] In an optional embodiment, the display panel 01 includes a three-dimensional display surface or a bent display surface. When the display panel 01 includes a three-dimensional display surface, the display panel 01 may include display areas facing different directions, such as a display surface in the form of a polygonal prism. When the display panel 01 includes a bent display surface, the display panel 01 may be applied to hyperboloid display devices, quadruple-curved display devices, curved display devices, foldable display devices, or rollable display devices, etc. The embodiments of the present invention do not limit this.

[0044] For example, taking display panel 01 as a self-emissive display panel, Figure 2 This is a schematic diagram of the film layer structure of a display panel provided in an embodiment of the present invention, for reference. Figure 2 The display panel 01 includes a substrate 50 and a display functional layer 60 located on one side of the substrate 50. The display functional layer 60 includes a pixel driving circuit 61, a light-emitting element 62, and a thin-film encapsulation layer 63. The pixel driving circuit 61 can be a typical 2T1C (two transistors and one capacitor) or 7T1C (seven transistors and one capacitor) driving circuit. The light-emitting element 62 includes, but is not limited to, OLED, mini LLED, or micro LED elements. The figure exemplarily shows the structure when the light-emitting element 62 is an OLED. The thin-film encapsulation layer 63 is used to encapsulate the light-emitting element 62. The thin-film encapsulation layer 63 may include a first inorganic encapsulation layer 631, a first organic encapsulation layer 632, and a second inorganic encapsulation layer 633 stacked together. The first organic encapsulation layer 632 can be fabricated by inkjet printing, and the first inorganic encapsulation layer 631 and the second inorganic encapsulation layer 633 can be formed by chemical vapor deposition.

[0045] Figure 3 This is a schematic diagram of the film layer structure of the bending area of ​​a display panel provided in an embodiment of the present invention, in conjunction with reference to the reference. Figure 1 , Figure 2 and Figure 3 The display area 10 and the bending area 20 are arranged along the first direction X, wherein the first blocking part 30 can extend along the second direction Y, and the second direction Y intersects with the first direction X, so as to... Figure 1 and Figure 2 For example, the second direction Y can be perpendicular to the first direction X; the second blocking part 40 can be located on opposite sides of the bending area 20 along the second direction Y, and the second blocking part 40 can extend along the first direction X.

[0046] It should be noted that, for ease of understanding, the figure shows a flat bending area 20. In actual applications, the bending area 20 of the display panel 01 can be in a bent state, and this invention does not limit this. In actual applications, when the bending area 20 is in a bent state, the bezel of the display panel 01 can be narrower, increasing the proportion of the display area 10 in the display panel 01. It should also be noted that the figure only shows, by way of example, the bending area 20 located on the lower side of the display area 10. The bending area 20 can also be located on the upper side, left side, right side, etc. of the display area 10, and this invention does not limit this.

[0047] Specifically, during the formation of organic materials, organic materials are usually fluid. By positioning the first blocking part 30 on the first side 201 of the bending area 20, the organic material of the display area 10 can be prevented from flowing into the bending area 20 from the first side 201, thereby increasing the film layer in the bending area 20 and affecting the bending effect of the bending area 20. The first blocking part 30 can also effectively prevent the organic material from flowing at the boundary, thus avoiding the thinning of the thickness of the cured organic film layer at the boundary. The second blocking portion 40 is located on the second side 202 adjacent to the first side 201, and extends along the first direction X to the edge of the display area 10. The second blocking portion 40 can prevent organic material from flowing into the bending area 20 from the second side 202. At the same time, the second blocking portion 40 and the first blocking portion 30 can cooperate with each other to guide the organic material near the first blocking portion 30, so that the organic material can flow evenly. It can also make the organic material form on the side of the second blocking portion 40 away from the bending area 20, avoiding the reduction of organic material and thickness at the corner of the display area 10 near the bending area 20, or the accumulation of organic material and greater thickness at the first blocking portion 30. In this way, the surface height of the organic film layer in the display area can have good uniformity. The organic film layer includes, but is not limited to, the first organic encapsulation layer 632, and can also be a planarization layer, an optical adhesive layer, an optical functional layer, etc.; the surface height refers to the vertical distance from the surface of the film layer away from the substrate 50 to the plane where the substrate 50 is located.

[0048] In this embodiment of the invention, by providing a first blocking portion on the first side of the bending area and a second blocking portion on the second side of the bending area, the organic material in the display area can be prevented from flowing into the bending area during the preparation of the display area, thus avoiding affecting the bending effect of the bending area. The first and second blocking portions can also effectively prevent the organic material from flowing at the boundary, preventing the thickness of the cured organic film layer at the boundary from decreasing. In addition, the second blocking portion on the second side of the bending area can act as a guide, allowing the organic material to flow evenly during the formation process, preventing the organic material from accumulating near the first or second blocking portion, improving the uniformity of the surface height of the organic film layer in the display area and its surrounding area, and reducing the risk of defects in subsequent processes. Such risks may include, but are not limited to, cracks and bulges caused by inconsistent surface height during the pressing of a four-curved display panel.

[0049] Optional, continue to refer to Figure 2 and Figure 3 The display panel 01 also includes a conductive layer 610 located on one side of the substrate 50, and the conductive layer 610 includes signal traces 612; in the thickness direction of the display panel 01, the signal traces 612 do not overlap with the second blocking portion 40.

[0050] For example, the conductive layer 610 is located in the display functional layer 60. The conductive layer 610 may include materials such as metal materials and indium tin oxide that can be used to transmit signals such as data signals and gate signals. The conductive layer 610 may be provided with signal traces located in the display area 10 and signal traces located in the non-display area. The signal traces 612 located in the display area 10 may include signal wiring for transmitting DC signals such as drive power lines and common power lines, and may also include gate lines for transmitting gate signals and data lines for transmitting data signals. The non-display area includes a bending area 20, and the signal traces 612 located in the bending area 20 may include fan-out traces for transmitting data signals.

[0051] In an optional embodiment, the display panel 01 further includes a bonding area 80 located on the side of the bending area 20 away from the display area 10. The display panel 01 also includes bonding terminals 81 located in the bonding area 80, which can be electrically connected to a controller such as a flexible printed circuit board or an integrated circuit control chip. One end of the fan-out trace located in the bending area 20 can be electrically connected to the data line located in the display area 10, and the other end can be electrically connected to the bonding terminal located in the bonding area 80. The controller can convert the image signal received from the outside into multiple image data, and send the multiple image data to the data driving unit of the display panel via the bonding terminal 81 of the bonding area 80. The data driving unit can generate data signals, which can be transmitted to the pixel driving circuit 61 via the fan-out trace of the bending area 20 and the data line of the display area 20.

[0052] Thus, by ensuring that the signal trace 612 does not overlap with the second blocking part 40 in the thickness direction of the display panel 01, the thickness of the display panel 01 at the signal trace 612 is smaller, and the bending stress is smaller. This avoids the second blocking part 40 from increasing the risk of bending and breaking of the signal trace 612, affecting the bending effect, and ensuring the effectiveness of data signal transmission of the display panel 01 after bending in the bending area 20.

[0053] In an optional embodiment, the first blocking portion 30 is disposed on the same layer as at least a portion of the structure of the display area 10; and / or, the second blocking portion 40 is disposed on the same layer as at least a portion of the structure of the display area 10.

[0054] For example, refer to Figure 2 and Figure 3 The first blocking portion 30 and / or the second blocking portion 40 can be fabricated in the same layer as some of the film layers in the display functional layer 60, for example, they can be fabricated in the same layer as the interlayer insulating layer and / or planarization layer in the display functional layer 60, and fabricated using the same process. In this way, the number of processes can be reduced and the manufacturing cost can be lowered.

[0055] It should be noted that the filling patterns in the figures are only used to distinguish different film layer structures, and the pattern type is not used to distinguish film layer materials. The same pattern type can be different film layer materials or different film layer structures, and the same film layer material can also be different filling patterns. In an optional embodiment, the first blocking part 30 and the second blocking part 40 can include different materials or the same material, and the embodiments of the present invention are not limited thereto.

[0056] Optional, Figure 4 This is a schematic diagram of the film layer structure of another display panel provided in an embodiment of the present invention, for reference. Figure 4 The display panel 01 also includes an optical functional layer 90 located on the side of the display functional layer 60 away from the substrate 50. The optical functional layer 90 includes a first part 908 and a second part 909 located in the display area 10. The height difference ΔT1 between the surface of the first part 908 away from the substrate 50 and the surface of the second part 909 away from the substrate 50 is ≤0.2*T01, where T01 is the thickness of the first part 908 or the thickness of the second part 909.

[0057] Specifically, the optical functional layer 90 is located on the side of the display functional layer 60 away from the substrate 50, which can improve the light emission efficiency of the light-emitting element 62 of the display functional layer 60 in the direction away from the substrate 50. The first blocking part 30 can prevent the optical functional layer 90 from flowing into the bending region 20 and affecting the bending effect of the bending region 20. The first blocking part 30 can also prevent the optical functional layer 90 from flowing at the boundary, thus preventing the thickness of the cured optical functional layer 90 at the boundary from thinning. The second blocking portion 40 can act as a flow guide, allowing the optical functional layer 90 to flow uniformly. The surface uniformity of the cured optical functional layer 90 is good. The height difference ΔT1 between the surface of the first portion 908 away from the substrate 50 and the surface of the second portion 909 away from the substrate 50 is ≤0.2*T01. The height difference between the surface of the first portion 908 away from the substrate 50 and the surface of the second portion 909 away from the substrate 50 fluctuates within a small range. The heights of the surfaces of the first portion 908 and the second portion 909 away from the substrate 50 tend to be consistent. The good consistency of the surface height of the optical functional layer 90 can reduce the risk of defects in subsequent processes. Such risks may include, but are not limited to, cracks and bulges caused by inconsistent surface heights during the pressing of the four-curved display panel. The first portion 908 and the second portion 909 can be the optical functional layer 90 at any position in the display area 10.

[0058] For example, the optical functional layer 90 includes a microlens array layer 91 and a refractive index matching layer 92. The microlens array layer 91 is located on the side of the thin-film encapsulation layer 63 away from the substrate 50, and the refractive index matching layer 92 is located on the side of the microlens array layer 91 away from the substrate 50. The microlens array layer 91 includes a first microlens 901 and a second microlens 902, which are correspondingly disposed with respect to the light-emitting element 62. For example, the orthographic projection of the first microlens 901 corresponding to a light-emitting element 62 onto the substrate 50 surrounds the orthographic projection of the light-emitting element 62 onto the substrate 50, and / or the orthographic projection of the second microlens 902 corresponding to a light-emitting element 62 onto the substrate 50 covers the orthographic projection of the light-emitting element 62 onto the substrate 50. Through the combined action of the microlenses and the refractive index matching layer 92, large-angle light can be converted into small-angle light, thereby improving the light extraction efficiency of the light-emitting element 62; at the same time, it avoids the problem of optical crosstalk caused by the large-angle light of the light-emitting element 62 incident on other light-emitting elements 62.

[0059] It should be noted that the microlens array layer and the refractive index matching layer have different refractive indices. The first and second microlenses can bulge towards the film layer with the lower refractive index. For example, when the refractive index of the microlens array layer is less than that of the refractive index matching layer, the contact surfaces of the first and second microlenses with the refractive index matching layer can bulge towards the direction of the microlens array layer. In this case, the first and second microlenses of the microlens array layer are concave lenses. When the refractive index of the refractive index matching layer is less than that of the microlens array layer, the contact surfaces of the first and second microlenses with the refractive index matching layer can bulge towards the direction of the refractive index matching layer. In this case, the first and second microlenses of the microlens array layer are convex lenses. The figure only shows a schematic diagram of the structure when the first and second microlenses are concave lenses.

[0060] In an optional embodiment, openings can be provided in the low-refractive-index film layers of the microlens array layer 91 and the refractive index matching layer 92, such as... Figure 5 As shown, taking the example that the refractive index of the microlens array layer 91 is less than that of the refractive index matching layer 92, an opening pattern 903 can be set in the microlens array layer 91. The orthogonal projection of the opening pattern 903 on the substrate 50 covers the orthogonal projection of the light-emitting element 62 on the substrate 50, and the opening pattern 903 is located in the light extraction direction of the light-emitting element 62, thereby enhancing the straightness of the emitted light of the light-emitting element 62 and thus improving the light extraction efficiency.

[0061] Continue to refer to Figure 5 The display panel 01 also includes a touch layer 110, which is located between the thin film encapsulation layer 63 and the optical functional layer 90. The touch layer 110 can sense external input by electromagnetic induction or pressure detection.

[0062] For example, refer to Figure 5 The touch layer 110 includes a first conductive electrode 111 and a second conductive electrode 112, forming a mutual capacitive touch method. Both the first conductive electrode 111 and the second conductive electrode can include patterned structures. For example, the first conductive electrode 111 may include multiple first conductive patterns, and the second conductive electrode 112 may include multiple second conductive patterns. The first conductive electrode 111 and / or the second conductive electrode 112 can be mesh-like metal traces. It is understood that the touch layer can also be for other touch methods, such as a self-capacitive touch method. This embodiment of the invention does not limit the touch method of the touch layer.

[0063] Optional, Figure 6 It is along Figure 1 A schematic diagram of a cross-sectional structure at section A-A', for reference. Figure 6 The first blocking part 30 includes a first side surface 302; along the first direction X, the height of the first side surface 302 gradually increases in the thickness direction of the display panel 01; the first side surface 302 extends along the second direction Y.

[0064] For example, the first blocking part 30 may include only one film material, and the first blocking part 30 may be integrally formed, reducing processes and improving production efficiency. The first side surface 302, which gradually increases in height along the first direction X in the thickness direction of the display panel 01, helps to reduce the impact of the flow of organic material at the first side surface 302, reduces the flow speed of organic material, and promotes the uniform flow of organic material, so that the surface flat layer has better uniformity and improves the blocking effect.

[0065] It is understood that the first blocking part 30 may also include a variety of film materials, and some of the film materials of the first blocking part 30 may be disposed in the same layer as the film materials in the display function layer 60 of the display area 10.

[0066] Optional, Figure 7 It is along Figure 1 Another cross-sectional structural diagram of section A-A', see reference. Figure 7 The first side surface 302 includes a plurality of first step surfaces 303; along the first direction X, the height of the plurality of first step surfaces 303 increases sequentially in the thickness direction of the display panel 01; the plurality of first step surfaces 303 extend along the second direction Y.

[0067] The first step surface 303 can be an inclined surface relative to the plane where the substrate 50 is located, or it can be a vertical surface relative to the plane where the substrate 50 is located. This embodiment of the invention does not limit this.

[0068] Specifically, multiple first step surfaces 303 can form multiple steps. Along the first direction X, the multiple steps gradually increase in the thickness direction of the display panel 01. On the one hand, this can prevent organic materials from flowing to the bending area 20. On the other hand, it helps to guide the organic materials to flow along the extension direction of the first step surface 303, avoids the accumulation of organic materials at the first blocking part 30, and increases the uniformity of the surface height of the organic materials.

[0069] Optional, Figure 8 It is along Figure 1 A schematic diagram of a cross-sectional structure at section B-B', for reference. Figure 8 The second blocking portion 40 includes a second side surface 402; along the second direction Y, near the center of the bending area 20, the height of the second side surface 402 gradually increases in the thickness direction of the display panel 01; and the second side surface 402 extends along the first direction.

[0070] For example, the second blocking portion 40 may include only one film material, and the second blocking portion 40 may be integrally formed, reducing processes and improving production efficiency. The second side surface 402, whose height gradually increases in the thickness direction of the display panel 01 along the second direction Y near the center of the bending area 20, helps to reduce the impact of the organic material flowing at the second side surface 402, reduces the flow velocity of the organic material, facilitates the diversion of the organic material, and makes the surface flat layer have better uniformity, thus improving the blocking effect.

[0071] It is understood that the second blocking part 40 may also include a variety of film materials, and some of the film materials of the second blocking part 40 may be disposed in the same layer as the film materials in the display function layer 60 of the display area 10.

[0072] Optional, Figure 9 It is along Figure 1 Another cross-sectional structural diagram of section B-B', see reference. Figure 9 The second side 402 includes a plurality of second step surfaces 403; along the second direction Y, near the center of the bending area 20, the height of the plurality of second step surfaces 403 increases sequentially in the thickness direction of the display panel 01; the plurality of second step surfaces 403 extend along the first direction X.

[0073] The second step surface 403 can be an inclined surface relative to the plane where the substrate 50 is located, or it can be a vertical surface relative to the plane where the substrate 50 is located. This embodiment of the invention does not limit this.

[0074] Specifically, multiple second step surfaces 403 can form multiple steps. Along the second direction Y, close to the center of the bending area 20, the multiple steps gradually increase in the thickness direction of the display panel 01. On the one hand, this can prevent organic materials from flowing to the bending area 20; on the other hand, it helps to guide the organic materials to flow along the extension direction of the second step surfaces 403, avoids the accumulation of organic materials at the first blocking part 30, and increases the uniformity of the surface height of the organic film layer.

[0075] Optional, Figure 10 This is a top view structural diagram of another display panel provided in an embodiment of the present invention. Figure 11 It is along Figure 10 A schematic diagram of a cross-sectional structure at section C-C', for reference. Figure 10 and Figure 11 The first blocking portion 30 includes a plurality of first blocking protrusions 31 arranged at intervals along the first direction X and extending along the second direction Y.

[0076] Specifically, there is a first valley 301 between two adjacent first blocking protrusions 31 that are spaced apart along the first direction X and extend along the second direction Y. The first valley 301 can store organic material that overflows from the first blocking protrusions 31 located on the side of the first valley 301 near the display area 10. The first blocking protrusions 31 and the first valley 301 can effectively prevent organic material from overflowing toward the bending area 20, which can improve the blocking effect of the first blocking part 30 and help to further improve the uniformity of the surface height of the organic film layer.

[0077] For example, refer to Figure 11 The cross-section of the first blocking protrusion 31 can be trapezoidal, such that along the first direction X, the side of the first blocking protrusion 31 is an inclined surface with a gradually increasing vertical distance from the plane where the substrate 50 is located. That is, along the direction close to the bending region 20, the surface of the first blocking protrusion 31 near the display area 10 is an inclined surface with a gradually increasing vertical distance from the substrate 50. In this way, by setting the side of the first blocking protrusion 31 near the display area 10 as an inclined surface, the flow velocity of the organic material can be reduced, which is beneficial to the uniform flow of the organic material.

[0078] It is understood that the first blocking protrusion 31 can also be a rectangle, triangle, pentagon or other structures. The embodiments of the present invention do not limit the structure of the first blocking protrusion 31.

[0079] Optional, Figure 12 It is along Figure 10 A schematic diagram of another cross-sectional structure of section C-C', see reference. Figure 10 and Figure 12 Along the first direction X, the height of the plurality of first blocking protrusions 31 of the first blocking portion 30 gradually increases in the thickness direction of the display panel 01.

[0080] Specifically, the height of the first blocking protrusion 31 near the display area 10 in the thickness direction of the display panel 01 is less than the height of the first blocking protrusion 31 away from the display area 10 in the thickness direction of the display panel 01. The first blocking protrusion 31 near the display area 10 can form a flow buffer structure for organic materials, which is conducive to the uniform flow of organic materials. The first valley 301 between the first blocking protrusions 31 can store the organic materials located on the side of the first valley 301 near the display area 10, avoiding the accumulation of organic materials at the first blocking protrusions 31 and increasing the uniformity of the surface height of the organic materials. The first blocking protrusion 31 away from the display area 10 can prevent the organic materials from overflowing, which can effectively prevent the organic materials from overflowing towards the bending area 20.

[0081] Optional, Figure 13 It is along Figure 10 A schematic diagram of a cross-sectional structure at section D-D', for reference. Figure 10 and Figure 13 The second blocking portion 40 includes a plurality of second blocking protrusions 41 that are spaced apart along the second direction Y and extend along the first direction X.

[0082] Specifically, there is a second valley 401 between two adjacent second blocking protrusions 41 that are spaced apart along the second direction Y and extend along the first direction X. The second valley 401 can store organic material that overflows from the second blocking protrusions 41 located on the side of the second valley 401 away from the bending area 20. The second blocking protrusions 41 and the second valley 401 can effectively prevent organic material from overflowing toward the bending area 20, thereby improving the blocking effect of the second blocking part 40.

[0083] For example, refer to Figure 13 The cross-section of the second blocking protrusion 41 can be trapezoidal, such that along the direction near the center of the bending region 20, the side of the first blocking protrusion 31 is an inclined surface with a gradually increasing vertical distance from the plane where the substrate 50 is located. In this way, by setting the side of the first blocking protrusion 31 near the display area 10 as an inclined surface, the flow velocity of the organic material can be reduced, which is beneficial to the drainage of the organic material and makes the surface height uniformity of the organic film layer in the display area 10 better.

[0084] It is understood that the second blocking protrusion 41 can also be a rectangle, triangle, pentagon, or other structures. This embodiment of the invention does not limit the structure of the second blocking protrusion 41. The structures of the second blocking protrusion 41 and the first blocking protrusion 31 can be the same or different; this embodiment of the invention does not limit this.

[0085] Optional, Figure 14 It is along Figure 10 A schematic diagram of another cross-sectional structure at section D-D', see reference. Figure 10 and Figure 14 Along the second direction Y, near the center of the bending area 20, the height of the plurality of second blocking protrusions 41 of the second blocking part 40 gradually increases in the thickness direction of the display panel 01.

[0086] Specifically, the height of the second blocking protrusion 41 away from the center of the bending area 20 in the thickness direction of the display panel 01 is less than the height of the second blocking protrusion 41 near the center of the bending area 20 in the thickness direction of the display panel 01. The second blocking protrusion 41 away from the center of the bending area 20 can form a flow buffer structure for organic materials, while the second blocking protrusion 41 near the center of the bending area 20 can prevent organic materials from overflowing, which is beneficial for the flow of organic materials and effectively prevents organic materials from flowing to the center of the bending area 20 and affecting the bending effect of the bending area 20.

[0087] Based on the same inventive concept, embodiments of the present invention also provide a display motherboard. Figure 15 This is a schematic diagram of the structure of a display motherboard provided in an embodiment of the present invention, for reference. Figure 15 The display motherboard 02 includes a display panel 01, which includes a display area 10 and a bending area 20, as well as a first blocking part 30 and a second blocking part 40. The first blocking part 30 is located on the first side 201 of the bending area 20, and the second blocking part 40 is located on the second side 202 of the bending area 20. The first side 201 and the second side 202 are adjacent to each other. The first side 201 is the side of the bending area 20 that is closer to the display area 10.

[0088] For example, the display motherboard 02 includes at least one display panel 01. A film structure can be directly fabricated on the entire display motherboard 02. By patterning with a photomask, display areas 10 and bending areas 20 are formed for each display panel 01. Individual display panels 10 can then be obtained by cutting. During the fabrication of the display area 10, a first blocking portion 30 is located on the first side 201 of the bending area 20. This blocking portion prevents organic material from flowing into the bending area 20 from the first side 201, thus affecting the bending effect of the bending area 20. The first blocking portion 30 also effectively prevents organic material from flowing at the boundary, avoiding thinning of the cured organic film layer at the boundary. The second blocking portion 40 is located on the second side 202 adjacent to the first side 201. On one hand, the second blocking portion 40 can prevent organic material from flowing into the bending area 20 from the second side 202, thereby increasing the coverage area of ​​the organic material and preventing the organic material in the display area 10 near the corner of the bending area 20 from being reduced and thinner. On the other hand, the second blocking portion 40 guides the organic material near the first blocking portion 30, allowing the organic material to flow evenly and preventing the organic material from accumulating at the first blocking portion 30, resulting in better surface uniformity of the organic film layer in the display area. The organic film layer includes, but is not limited to, the first organic encapsulation layer 632, and can also be a planarization layer, an optical adhesive layer, an optical functional layer, etc.

[0089] Optional, Figure 16 This is a schematic diagram of another display motherboard provided in an embodiment of the present invention, for reference. Figure 16 The display motherboard 02 includes multiple display panels 01, multiple blocking structures corresponding to the display panels 01, and multiple cutting areas 120 surrounding the display panels 01; the blocking structure includes a third blocking part 130 located in the cutting area 120; the third blocking part 130 and the first blocking part 30 are arranged along a second direction Y; the third blocking part 130 extends along the second direction Y; wherein, the second direction Y intersects with the first direction X; the first direction X is the arrangement direction of the display area 10 and the bending area 20.

[0090] For example, during the fabrication of the display area 10 of the display panel 01, organic material can cover the cutting area 120 surrounding the display panel 01. By providing a third blocking portion 130 extending along the second direction Y in the cutting area 120, and arranging the third blocking portion 130 and the first blocking portion 30 along the second direction Y, the boundary of the organic film layer can be moved towards the cutting area 120, so that an organic film layer is also formed within the cutting area 120. The third blocking portion 130 can prevent the organic material in the cutting area 120 from flowing along the cutting groove in the cutting area 120. On the one hand, the third blocking portion 130 can increase the organic material in the cutting area 120 around the display area 10, which can prevent excessive flow of organic material at the boundary of the display area 10 into the cutting area 120, resulting in a reduction of organic material at the boundary of the display area 10, a smaller thickness of the organic film layer at the boundary of the display area 10, and a large difference in surface height of the cover film layer in the display area 10, which is not conducive to subsequent processing. On the other hand, the third blocking part 130 can also provide an encapsulation film layer in the cutting area 120, reducing the difference between the surface height of the cutting area 120 and the surface mold height of the display area 10, which helps to slow down the flow of organic materials, allowing the organic materials to flow evenly, and making the surface height uniformity of the organic film layer in the display area 10 better.

[0091] Optional, Figure 17 This is a schematic diagram of another display motherboard provided in an embodiment of the present invention. Figure 18 It is along Figure 17 A schematic diagram of a cross-sectional structure at section E-E', for reference. Figure 16 and Figure 17 The display motherboard 02 also includes a substrate 50, a display functional layer 60, and an optical functional layer 90. The display functional layer 60 is located on one side of the substrate 50, and the optical functional layer 90 is located on the side of the display functional layer 60 away from the substrate 50. The height difference ΔT2 between the surface of the optical functional layer 90 located in the cutting area 120 away from the substrate 50 and the surface of the optical functional layer 90 located in the display area 10 away from the substrate 50 is ≤0.2*T02, where T02 is the thickness of the optical functional layer 90 located in the display area 10.

[0092] Specifically, the optical functional layer 90 is located on the side of the display functional layer 60 away from the substrate 50, which can improve the light emission efficiency of the light-emitting elements in the display functional layer 60 in the direction away from the substrate 50. The third blocking part 30 can prevent the optical functional layer 90 from flowing into the cutting groove of the cutting area 120 surrounding the bending area 20, can slow down the flow of the optical functional layer 90 at the boundary of the display area 10, and can also make the surface height uniformity of the optical functional layer 90 in the cutting area 120 and the optical functional layer 90 in the display area 10 better. The height difference ΔT2 ≤ 0.2*T02 between the surface of the optical functional layer 90 in the cutting area 120 away from the substrate 50 and the surface of the optical functional layer 90 in the display area 10 away from the substrate 50 can make the surface height of the optical functional layer 90 in the cutting area 120 more consistent with the surface height of the optical functional layer 90 in the display area 10, avoiding the existence of the optical functional layer 90 with a slope in the cutting area 120, which is not conducive to cutting. Thus, the cutting effect and cutting accuracy can be improved.

[0093] Optional, Figure 19 This is a schematic diagram of another display motherboard provided in an embodiment of the present invention, for reference. Figure 19 The first blocking portion 30 includes at least one first blocking protrusion 31 that is spaced apart along the first direction X and extends along the second direction Y; the third blocking portion 130 includes a plurality of third blocking protrusions 131 that are arranged along the first direction X and extend along the second direction Y; the number of third blocking protrusions 131 is greater than the number of first blocking protrusions 31.

[0094] For example, the cutting area 120 is provided with a cutting groove, which causes the organic material to flow a large vertical flow distance from the display area 10 to the cutting area 120. As a result, the flow velocity of the organic material in the cutting area 120 is large. By providing a large number of third blocking protrusions 131 in the cutting area 120, the flow of the organic material can be slowed down, so that the organic material can flow evenly. The surface height of the organic film layer in the cutting area 120 is consistent with the surface height of the organic film layer in the display area 10, which is beneficial for cutting.

[0095] Optional, continue to refer to Figure 19 The blocking structure corresponding to the display panel 01 includes a fourth blocking part 140 located on the side of the cutting area 120 away from the bending area 20; the fourth blocking part 140 and the second blocking part 40 are arranged along the second direction Y; the fourth blocking part 140 extends along the first direction X.

[0096] Specifically, the fourth blocking part 140 is located on the side of the cutting area 120 away from the bending area 20. It can block organic materials, serving both a drainage and blocking function. On the one hand, the fourth blocking part 140 can drain organic materials, improving the uniformity of the surface height of the organic film layer in the cutting area 120 and the display area 10. On the other hand, it can reduce the amount of organic material in the cutting area 120, preventing the surface height of the cutting area 120 from being higher than the surface height of the bending area 20, which would be detrimental to cutting and affect the cutting effect. In addition, by providing the fourth blocking part 140, the structure of the second blocking part 40 located on the second side of the bending area 20 can be reduced, and the thickness of the bending area 20 at the second blocking part 40 can be reduced, which is beneficial for the bending of the bending area 20.

[0097] The display motherboard provided in the embodiments of the present invention includes the display panel provided in any embodiment of the present invention, and has the corresponding technical features and beneficial effects of the display panel. For the contents not described in detail in the embodiments of the display motherboard, please refer to the above description of the structure of the display panel, and will not be repeated here. Similarly, the display panel in the embodiments of the present invention also has the functional modules and beneficial effects of the display motherboard. For the contents not described in detail in the embodiments of the display panel, please refer to the above description of the display motherboard, and will not be repeated here.

[0098] Based on the same inventive concept, embodiments of the present invention also provide a display device. Figure 20 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention, such as... Figure 20 The display device 03 includes the display panel 01 provided in any embodiment of the present invention. The display device 03 provided in the embodiments of the present invention can be... Figure 20 The mobile phone shown can also be any electronic product with a display function, including but not limited to the following categories: televisions, laptops, desktop monitors, tablets, digital cameras, smart bracelets, smart glasses, in-vehicle displays, medical devices, industrial control equipment, touch interactive terminals, etc. This embodiment of the invention does not impose any special limitations on these categories.

[0099] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that, include: The display area and the bending area, as well as the first blocking part and the second blocking part; The first blocking portion is located on the first side of the bending area, and the second blocking portion is located on the second side of the bending area; the first side and the second side are adjacent; wherein, the first side is the side of the bending area closer to the display area; Wherein, the arrangement direction of the display area and the bending area is a first direction, and the second direction intersects with the first direction; The second blocking portion includes a plurality of second blocking protrusions spaced apart along the second direction and extending along the first direction; Alternatively, the second blocking portion includes a second side surface; the height of the second side surface gradually increases in the thickness direction of the display panel along the second direction near the center of the bending area; and the second side surface extends along the first direction; Alternatively, the second blocking portion includes a second side surface, which includes a plurality of second stepped surfaces; along the second direction near the center of the bending area, the height of the plurality of second stepped surfaces increases sequentially in the thickness direction of the display panel; the plurality of second stepped surfaces extend along the first direction.

2. The display panel according to claim 1, characterized in that, Also includes: Substrate; The display functional layer is located on one side of the substrate; An optical functional layer is located on the side of the display functional layer away from the substrate; The optical functional layer includes a first part and a second part located in the display area. The height difference ΔT1 between the surface of the first part away from the substrate and the surface of the second part away from the substrate is ≤0.2*T01, where T01 is the thickness of the first part or the thickness of the second part.

3. The display panel according to claim 1, characterized in that, The first blocking portion includes a plurality of first blocking protrusions spaced apart along the first direction and extending along the second direction.

4. The display panel according to claim 3, characterized in that, Along the first direction, the height of the plurality of first blocking protrusions of the first blocking portion gradually increases in the thickness direction of the display panel.

5. The display panel according to claim 1, characterized in that, Along the second direction, closer to the center of the bending area, the height of the plurality of second blocking protrusions of the second blocking portion gradually increases in the thickness direction of the display panel.

6. The display panel according to claim 1, characterized in that, The first blocking part includes a first side surface; Along the first direction, the height of the first side gradually increases in the thickness direction of the display panel; the first side extends along the second direction.

7. The display panel according to claim 6, characterized in that, The first side surface includes multiple first step surfaces; Along the first direction, the height of the plurality of first step surfaces increases sequentially in the thickness direction of the display panel; the plurality of first step surfaces extend along the second direction.

8. The display panel according to claim 1, characterized in that, Also includes: Substrate; A conductive layer is located on one side of the substrate; The conductive layer includes signal traces; in the thickness direction of the display panel, the signal traces do not overlap with the second blocking portion.

9. The display panel according to claim 1, characterized in that, The first blocking portion is disposed on the same layer as at least a portion of the structure of the display area; and / or, the second blocking portion is disposed on the same layer as at least a portion of the structure of the display area.

10. A display motherboard, characterized in that, include: Display panel; The display panel includes a display area and a bending area, as well as a first blocking part and a second blocking part; The first blocking portion is located on the first side of the bending area, and the second blocking portion is located on the second side of the bending area; the first side and the second side are adjacent; wherein, the first side is the side of the bending area closer to the display area; Wherein, the arrangement direction of the display area and the bending area is a first direction, and the second direction intersects with the first direction; The second blocking portion includes a plurality of second blocking protrusions spaced apart along the second direction and extending along the first direction; Alternatively, the second blocking portion includes a second side surface; the height of the second side surface gradually increases in the thickness direction of the display panel along the second direction near the center of the bending area; and the second side surface extends along the first direction; Alternatively, the second blocking portion includes a second side surface, which includes a plurality of second stepped surfaces; along the second direction near the center of the bending area, the height of the plurality of second stepped surfaces increases sequentially in the thickness direction of the display panel; the plurality of second stepped surfaces extend along the first direction.

11. The display motherboard according to claim 10, characterized in that, include: Multiple display panels, multiple blocking structures corresponding to the display panels, and multiple cutting areas surrounding the display panels; The blocking structure includes a third blocking portion located in the cutting area; the third blocking portion and the first blocking portion are arranged along the second direction; the third blocking portion extends along the second direction.

12. The display motherboard according to claim 11, characterized in that, Also includes: Substrate; The display functional layer is located on one side of the substrate; An optical functional layer is located on the side of the display functional layer away from the substrate; The height difference ΔT2 between the surface of the optical functional layer located in the cutting area away from the substrate and the surface of the optical functional layer located in the display area away from the substrate is ≤0.2*T02, where T02 is the thickness of the optical functional layer located in the display area.

13. The display motherboard according to claim 11, characterized in that, The first blocking portion includes at least one first blocking protrusion that is spaced apart along the first direction and extends along the second direction; the third blocking portion includes a plurality of third blocking protrusions that are arranged along the first direction and extend along the second direction. The number of the third blocking protrusions is greater than the number of the first blocking protrusions.

14. The display motherboard according to claim 10, characterized in that, include: Multiple display panels, multiple blocking structures corresponding to the display panels, and multiple cutting areas surrounding the display panels; The blocking structure includes a fourth blocking portion located on the side of the cutting area away from the bending area; the fourth blocking portion and the second blocking portion are arranged along the second direction; the fourth blocking portion extends along the first direction.

15. A display device, characterized in that, include: The display panel according to any one of claims 1-9.

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