A display panel, a display module, a preparation method thereof and a display device

Abstract

The application discloses a display panel, a display module, a preparation method of the display module and a display device. The display panel has a display area and a frame area surrounding the display area, and comprises a substrate, a gate drive circuit layer, a pixel circuit layer and a light-emitting layer which are sequentially stacked on one side of the substrate away from the substrate; wherein the gate drive circuit layer, the pixel circuit layer and the light-emitting layer are located in a first area and a second area of the display area close to the frame area, and the first area and the second area are oppositely arranged. The gate drive circuit layer of the display panel provided by the application is in a symmetrical layout, which can improve the stability of the display panel structure. Meanwhile, the gate drive circuit layer is arranged by using the edge space of the display area, the occupied area of the frame area is reduced, the boundary of the encapsulation layer on the side of the light-emitting layer away from the substrate in the frame area can be inwardly retracted, the width of the left and right frames of the display panel is reduced, the narrow-frame design is realized, and the screen ratio is improved.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a display panel, a display module, a method for manufacturing the same, and a display device. Background Technology

[0002] Organic Light Emitting Diode (OLED) display technology boasts advantages such as low energy consumption, low cost, self-emissive nature, wide viewing angle, and fast response time, making it considered one of the most promising next-generation display technologies. OLED display technology is currently widely used in high-end smartphones, televisions, smartwatches, VR (Virtual Reality) devices, and automotive displays. With the development of display technology, users' demands for the visual experience of display devices are increasing, and narrow bezel designs and multi-panel displays have become important development trends in display products. Summary of the Invention

[0003] In view of this, embodiments of this application provide a display panel, a display module, a method for manufacturing the same, and a display device.

[0004] The first aspect of this application provides a display panel having a display area and a border area surrounding the display area, including:

[0005] substrate; A gate driving circuit layer, a pixel circuit layer, and a light-emitting layer are sequentially stacked on one side of the substrate and in a direction away from the substrate. The gate drive circuit layer, pixel circuit layer and light-emitting layer are located in the first and second regions of the display area near the border area, and the first and second regions are arranged opposite to each other.

[0006] In one embodiment, the display area further includes a dielectric layer located between the pixel circuit layer and the gate drive circuit layer; the dielectric layer includes an insulating material.

[0007] In one embodiment, the border area includes a first border area, a second border area, a third border area, and a fourth border area connected in sequence, with the first border area adjacent to the first border area and the second border area adjacent to the third border area.

[0008] In one embodiment, the display area further includes a third area located between the first area and the second area, the third area including a dielectric layer, a pixel circuit layer and a light-emitting layer sequentially stacked along the direction away from the substrate.

[0009] In one embodiment, the display panel includes a crack detection circuit layer located on one side of a substrate, the crack detection circuit layer being located in at least one of a first frame area or a third frame area.

[0010] In one embodiment, at least a portion of the crack detection circuit layer is disposed on the same layer as the pixel circuit layer.

[0011] In one embodiment, the display panel further includes a binding area located in the second or fourth border area.

[0012] In one embodiment, the display panel further includes an encapsulation layer located on the side of the light-emitting layer away from the substrate, and the boundary of the orthographic projection of the encapsulation layer on the substrate is located between the orthographic projection of the crack detection circuit layer on the substrate and the display area.

[0013] A second aspect of this application provides a display module, comprising: Cover plate; The first display panel is located on one side of the cover plate; The second display panel is located on the side of the first display panel near the cover plate; the first display panel and the second display panel are selected from the display panels in the above embodiments; the orthographic projection of the second border area of ​​the first display panel on the plane where the cover plate is located and the orthographic projection of the first border area of ​​the second display panel on the plane where the cover plate is located partially overlap; The support layer includes a first support portion located on the side of the first display panel away from the cover plate and a second support portion located on the side of the second display panel close to the cover plate; the orthographic projection of the first support portion on the plane where the cover plate is located and the orthographic projection of the second support portion on the plane where the cover plate is located partially overlap.

[0014] In one embodiment, the orthographic projection of the first support portion onto the plane of the cover plate covers the orthographic projections of the first display panel and the second display panel onto the plane of the cover plate.

[0015] In one embodiment, the orthographic projection of the second support portion onto the plane of the cover plate overlaps with the orthographic projection of the second display panel onto the plane of the cover plate.

[0016] In one embodiment, the thickness of the second support portion is equal to the thickness of the first display panel; the surface of the second support portion near the cover plate is flush with the surface of the first display panel near the cover plate.

[0017] In one embodiment, the thickness of the second support is greater than or equal to 30 μm and less than or equal to 40 μm.

[0018] In one embodiment, the display module further includes a buffer layer located on the side of the first support portion away from the cover plate.

[0019] In one embodiment, the first support portion and the second support portion are an integrated structure.

[0020] In one embodiment, the orthographic projection of the first support portion on the plane of the cover plate overlaps with the orthographic projection of the first display panel on the plane of the cover plate; and / or, the orthographic projection of the second support portion on the plane of the substrate overlaps with the orthographic projection of the second display panel on the plane of the substrate.

[0021] In one embodiment, a portion of the second support is located between the first display panel and the second display panel.

[0022] In one embodiment, the orthographic projection of the first support portion onto the plane of the cover plate has the same area as the orthographic projection of the second support portion onto the plane of the cover plate.

[0023] In one embodiment, the display module further includes a filling adhesive layer located on the side of the second support portion away from the cover plate, the surface of the filling adhesive layer away from the cover plate being flush with the surface of the first support portion away from the cover plate.

[0024] In one embodiment, the display module further includes a buffer layer located on the side of the first support and the filling adhesive layer away from the cover plate.

[0025] In one embodiment, the orthographic projection of the display area of ​​the first display panel onto the cover plate and the orthographic projection of the display area of ​​the second display panel onto the cover plate are offset.

[0026] In one embodiment, the orthographic projection of the second border area of ​​the first display panel onto the cover plate overlaps with the orthographic projection of the first border area of ​​the second display panel onto the cover plate.

[0027] In one embodiment, the display module further includes a first optical adhesive layer, which is located on the side of the first display panel near the cover plate, and the surface of the first optical adhesive layer near the cover plate is flush with the surface of the second display panel near the cover plate.

[0028] In one embodiment, the display module further includes a polarizing layer located on the side of the first optical adhesive layer and the second display panel near the cover plate.

[0029] In one embodiment, the display module further includes a second optical adhesive layer located between the polarizing layer and the cover plate.

[0030] In one embodiment, the display module further includes an ink layer located between the second optical adhesive layer and the cover plate.

[0031] Wherein, the orthographic projection of the ink layer on the plane of the cover plate overlaps with the orthographic projection of the border area of ​​the first display panel on the plane of the cover plate; and / or, the orthographic projection of the ink layer on the plane of the cover plate overlaps with the orthographic projection of the border area of ​​the second display panel on the plane of the cover plate.

[0032] In one embodiment, the orthographic projection of the ink layer on the plane of the cover plate is offset from the orthographic projection of the display area of ​​the first display panel on the plane of the cover plate; and / or, the orthographic projection of the ink layer on the plane of the cover plate is offset from the orthographic projection of the display area of ​​the second display panel on the plane of the cover plate.

[0033] In one embodiment, the ink layer includes a first part, a second part, a third part, and a fourth part connected in sequence, and a fifth part connecting the second part and the fourth part.

[0034] Wherein, along the direction parallel to the cover plate and pointing from the first display panel to the second display panel, the width of the fifth part is less than the width of the third border area of ​​the first display panel; and / or, along the direction parallel to the cover plate and pointing from the first display panel to the second display panel, the width of the first part is greater than the width of the first border area of ​​the first display panel, and the width of the third part is greater than the width of the third border area of ​​the second display panel.

[0035] A third aspect of this application provides a method for manufacturing a display module, the method comprising: A first display panel and a second display panel are provided; the first display panel and the second display panel are selected from the above-mentioned display panels; The non-light-emitting side of the first display panel and the non-light-emitting side of the second display panel are respectively attached to the first support portion and the second support portion; The side of the first display panel away from the first support and the side of the second display panel away from the second support are attached to the cover plate structure layer; Wherein, the orthographic projection of the second border area of ​​the first display panel onto the plane of the cover plate partially overlaps with the orthographic projection of the first border area of ​​the second display panel onto the plane of the cover plate; the orthographic projection of the first support portion onto the plane of the cover plate partially overlaps with the orthographic projection of the second support portion onto the plane of the cover plate.

[0036] In one embodiment, the step of attaching the non-light-emitting side of the first display panel and the non-light-emitting side of the second display panel to the first support portion and the second support portion respectively includes: providing an integrated first support portion and a second support portion; attaching the non-light-emitting side of the first display panel to the exposed surface of the first support portion facing the second support portion; and attaching the non-light-emitting side of the second display panel to the surface of the second support portion away from the first support portion; wherein the second support portion covers a portion of the surface of the first support portion.

[0037] In one embodiment, an integrated first support portion and a second support portion are provided. After the steps of attaching the non-light-emitting side of the first display panel to the exposed surface of the first support portion facing the second support portion and attaching the non-light-emitting side of the second display panel to the surface of the second support portion away from the first support portion, the method further includes: preparing a first optical adhesive layer with a surface flush with the surface of the second display panel on the light-emitting side of the first display panel.

[0038] In one embodiment, after the step of preparing a first optical adhesive layer with a surface flush with the surface of the second display panel on the light-emitting side of the first display panel, a polarizing layer is prepared on the surfaces of the first optical adhesive layer and the second display panel.

[0039] In one embodiment, the step of bonding the side of the first display panel away from the first support and the side of the second display panel away from the second support to the cover plate structure layer includes: preparing an ink layer on one side of the cover plate, preparing a second optical adhesive layer on the side of the cover plate facing the ink layer to obtain the cover plate structure layer, and bonding the second optical adhesive layer to the polarizing layer.

[0040] In one embodiment, an integrated first support portion and a second support portion are provided. The steps of attaching the non-light-emitting side of the first display panel to the exposed surface of the first support portion facing the second support portion and attaching the non-light-emitting side of the second display panel to the surface of the second support portion away from the first support portion include: providing a support composite layer comprising a protective film, a first support portion, a second support portion, and a release film stacked sequentially, wherein a portion of the surface of the first support portion away from the protective film is attached to the first release film, and the surface of the second support portion away from the protective film is attached to the second release film; removing the first release film and attaching the non-light-emitting side of the first display panel to the exposed first support portion on the side where the first support portion is located; removing the second release film and attaching the non-light-emitting side of the second display panel to the surface of the second support portion away from the first support portion.

[0041] In one embodiment, an ink layer is prepared on one side of the cover plate, and a second optical adhesive layer is prepared on the side of the cover plate facing the ink layer to obtain a cover plate structure layer. After the step of bonding the second optical adhesive layer with the polarizing layer, the method includes: removing the protective film on one side of the second support portion, and bonding the buffer layer to the side of the first support portion away from the cover plate and the side of the second support portion away from the cover plate.

[0042] In one embodiment, before the step of bonding the side of the first display panel away from the first support and the side of the second display panel away from the second support to the cover plate structure layer, the method includes: preparing a filler adhesive layer with a thickness equal to the sum of the thicknesses of the first display panel and the first support on the side surfaces of the first display panel and the first support.

[0043] In one embodiment, the step of bonding the side of the first display panel away from the first support and the side of the second display panel away from the second support to the cover plate structure layer includes: preparing an ink layer on one side of the cover plate, preparing a second optical adhesive layer on the side of the cover plate facing the ink layer to obtain the cover plate structure layer, and bonding the second optical adhesive layer to the polarizing layer.

[0044] In one embodiment, before the step of bonding the side of the first display panel away from the first support and the side of the second display panel away from the second support to the cover plate structure layer, the step includes bonding the side of the second support away from the second display panel to the filler adhesive layer.

[0045] In one embodiment, after the step of bonding the side of the second support portion away from the second display panel to the filler adhesive layer, the method includes: preparing a first optical adhesive layer on the light-emitting side of the first display panel with a surface flush with the surface of the second display panel.

[0046] In one embodiment, after the step of preparing a first optical adhesive layer with a surface flush with the surface of the second display panel on the light-emitting side of the first display panel, a polarizing layer is prepared on the surfaces of the first optical adhesive layer and the second display panel.

[0047] In one embodiment, the step of bonding the side of the first display panel away from the first support and the side of the second display panel away from the second support to the cover plate structure layer includes: preparing an ink layer on one side of the cover plate, preparing a second optical adhesive layer on the side of the cover plate facing the ink layer to obtain the cover plate structure layer, and bonding the second optical adhesive layer to the polarizing layer.

[0048] In one embodiment, after the step of bonding one side of the second optical adhesive layer in the cover plate structure layer to the polarizing layer, the method includes bonding the buffer layer to the first support and the filler adhesive layer.

[0049] A third aspect of this application provides a display device, including the display panel in the above embodiments, or including any of the above display modules, or including a display module prepared by any of the above preparation methods.

[0050] The beneficial effects of this application are as follows: By placing the gate driving circuit layer, pixel circuit layer, and light-emitting layer in the first and second regions of the display area near the bezel area, and with the first and second regions arranged opposite to each other, a symmetrical layout of the gate driving circuit layer can be achieved, improving the stability of the display panel structure. Simultaneously, by effectively utilizing the edge space of the display area to arrange the gate driving circuit layer, the area occupied by the bezel area is reduced. The boundary of the encapsulation layer on the side of the light-emitting layer furthest from the substrate in the bezel area can be recessed, reducing the width of the left and right bezels of the display panel, achieving a narrow bezel design, increasing the screen-to-body ratio, while ensuring the symmetry and stability of the signal transmission path, reducing driving delay and signal interference. Attached Figure Description

[0051] Figure 1 This is a top view diagram of a display panel in the prior art; Figure 2 These are some existing technologies Figure 1 A schematic cross-sectional view of the structure at section A-A'. Figure 3This is a top view structural diagram of a display panel provided in some embodiments of this application; Figure 4 This is provided by some embodiments of this application. Figure 3 A schematic cross-sectional view of the structure at section B-B'. Figure 5a Other embodiments provided in this application Figure 3 A schematic cross-sectional view of the structure at section B-B'. Figure 5b Other embodiments provided in this application Figure 3 A schematic cross-sectional view of the structure at section D-D'. Figure 6 This is provided by some embodiments of this application. Figure 3 A schematic cross-sectional view of the structure at section C-C'. Figure 7 This is a cross-sectional structural schematic diagram of a display module provided in some embodiments of this application; Figure 8 This is a cross-sectional structural schematic diagram of a display module provided in some other embodiments of this application; Figure 9 This is a cross-sectional structural schematic diagram of a display module provided in some embodiments of this application; Figure 10 This is a cross-sectional structural schematic diagram of a display module provided in some embodiments of this application; Figure 11 This is provided by some embodiments of this application. Figure 7 and Figure 8 A top view of the middle ink layer; Figure 12 This is a schematic diagram of a method for manufacturing a display panel provided in this application; Figure 13 This is a process flow diagram of a display panel manufacturing process provided in some embodiments of this application; Figure 14 This is a cross-sectional structural schematic diagram of a display module provided in some other embodiments of this application.

[0052] Explanation of reference numerals in the attached figures 100. Display panel; 110. Display area; 111. First area; 112. Second area; 113. Third area; 120. Border area; 121. First border area; 122. Second border area; 123. Third border area; 124. Fourth border area; 101. Substrate; 102. Gate drive circuit layer; 103. Dielectric layer; 104. Light-emitting layer; 105. Pixel circuit layer; 106. Crack detection circuit layer; 107. Encapsulation layer; 200. Display module; 201. Cover plate; 210. First display panel; 220. Second display panel; 202. Support layer; 2021. First support part; 2022. Second support part; 203. Buffer layer; 204. Filler adhesive layer; 205. First optical adhesive layer; 206. Second optical adhesive layer; 207. Polarizing layer; 208. Ink layer; 2081. First part; 2082. Second part; 2083. Third part; 2084. Fourth part; 2085. Fifth part; 230. Cover plate structural layer; 300, Release film; 310, First release film; 320, Second release film; 400, Protective film; 700. Display device; A. Light-emitting side; B. Non-light-emitting side. Detailed Implementation

[0053] To enable those skilled in the art to better understand the technical solutions in the embodiments of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art should fall within the protection scope of the embodiments of this application.

[0054] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in the embodiments of this application refers to and includes any or all possible combinations of one or more associated listed items.

[0055] It should be understood that in the description of the embodiments of this application, the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the scheme of the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0056] Furthermore, when an element or layer is referred to as being "on" another element or layer, "connected to," or "bonded to" another element or layer, the element or layer may be directly on the other element or layer, directly connected to, or directly bonded to the other element or layer, or there may be intermediate elements or layers. However, when an element or layer is referred to as being "directly on" another element or layer, "directly connected to," or "directly bonded to" another element or layer, there are no intermediate elements or layers.

[0057] The terms First, Second, etc., are used to describe various elements, components, regions, layers, and / or parts, but these elements, components, regions, layers, and / or parts should not be limited by these terms. These terms are used to distinguish one element, component, region, layer, and / or part from another element, component, region, layer, and / or part.

[0058] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0059] Figure 1 This is a top view of the structure of a display panel 100 in the prior art; Figure 2 These are some existing technologies Figure 1 A schematic diagram of the cross-sectional structure at section A-A'.

[0060] In-vehicle displays are evolving from simple information displays to multimodal interaction centers. Dual-screen and triple-screen displays have become hallmarks of smart cockpit design in recent years, enhancing the interactive experience and technological feel through multi-screen integration. The smaller the bezels of the spliced ​​screens, the less noticeable the visual disjointedness; therefore, 100% narrow-bezel display panel splicing technology will become a future trend in in-vehicle display development. (Reference) Figures 1-2In the prior art, the display panel 100 has a display area 110 and a bezel area 120 surrounding the display area 110. The bezel area 120 of the display panel 100 has a gate driving circuit, while the display area 110 has a stacked light-emitting layer 104 and a pixel circuit layer 105. Because the bezel area 120 contains the gate driving circuit, it occupies a certain amount of space. To ensure the overall stability of the display panel 100, the boundary of the encapsulation layer cannot be shrunk inwards, resulting in a relatively wide bezel area 120. Existing solutions can achieve a narrow-slit splicing effect by improving the cutting precision of each film layer in the display module 200, improving the bonding precision of each film layer in the display module, or using optical compensation technology to weaken the visual appearance of the bezel. However, improvements in module cutting technology and bonding precision are limited; the splicing gap is only slightly reduced, and the screen bezel is only slightly reduced. Optical compensation technology only stretches the splicing area image by 1-2 pixels through software algorithms to offset the physical gap, which is merely an illusion of weakened visual appearance and cannot effectively narrow the bezel area 120.

[0061] The specific implementation of the embodiments of this application will be further described below with reference to the accompanying drawings.

[0062] Figure 3 This is a top view of the display panel 100 provided in some embodiments of this application; Figure 4 This is provided by some embodiments of this application. Figure 3 A schematic cross-sectional view of the structure at section B-B'. Figure 5a Other embodiments provided in this application Figure 3 A schematic cross-sectional view of the structure at section B-B'. Figure 5b Other embodiments provided in this application Figure 3 A schematic cross-sectional view of the structure at section D-D'. Figure 6 This is provided by some embodiments of this application. Figure 3 A schematic diagram of the cross-sectional structure at section C-C'.

[0063] refer to Figures 3-4 A first aspect of this application provides a display panel 100 having a display area 110 and a border area 120 surrounding the display area 110, comprising: a substrate 101; a gate driving circuit layer 102, a pixel circuit layer 105, and a light-emitting layer 104 sequentially stacked on one side of the substrate 101 and in a direction away from the substrate 101; wherein the gate driving circuit layer 102, the pixel circuit layer 105, and the light-emitting layer 104 are located in a first region 111 and a second region 112 of the display area 110 near the border area 120, and the first region 111 and the second region 112 are disposed opposite to each other.

[0064] In this embodiment, by placing the gate driving circuit layer 102, the pixel circuit layer 105, and the light-emitting layer 104 in the first region 111 and the second region 112 of the display area 110 near the border region 120, and with the first region 111 and the second region 112 arranged opposite to each other, a symmetrical layout of the gate driving circuit layer 102 can be achieved, improving the stability of the display panel structure. Simultaneously, by effectively utilizing the edge space of the display area 110 to arrange the gate driving circuit layer, the area occupied by the border region 120 is reduced. The encapsulation layer on the side of the light-emitting layer 104 away from the substrate 101 can be recessed at the boundary of the border region 120, reducing the width of the left and right borders of the display panel 100, achieving a narrow bezel design, increasing the screen-to-body ratio, while ensuring the symmetry and stability of the signal transmission path, and reducing driving delay and signal interference.

[0065] The light-emitting layer 104 may include multiple pixels. Each pixel includes multiple sub-pixels that display different colors. A pixel unit may include a first sub-pixel that emits blue light, a second sub-pixel that emits green light, and a third sub-pixel that emits red light. Each light-emitting unit includes an anode layer, a light-emitting material layer, and a cathode layer that are sequentially stacked along the direction away from the substrate 101. The gate driving circuit layer 102 may sequentially provide scan driving signals to the gates of the thin-film transistors corresponding to each row of light-emitting units, thereby realizing row-by-row selection and switching control of the light-emitting units. The gate driving circuit layer 102 may include a first scan signal line Scan1, a second scan signal line Scan2, and a third scan signal line Scan3 that provide scan signals to the first sub-pixel, the second sub-pixel, and the third sub-pixel, respectively, and also includes a pixel driving circuit. Each thin-film transistor in the pixel circuit layer 105 can act as a pixel-level independent electrically controlled switch, achieving high resolution, high brightness, and high contrast display by precisely controlling the on / off state and current magnitude of each sub-pixel.

[0066] It should be noted that, Figure 4 The diagram shown is a cross-sectional view of the membrane in region 111. The location of the membrane in region 112 is compared with... Figure 4 The positions of the membrane layers are the same, so they will not be described in detail here.

[0067] refer to Figure 5a In some embodiments, the display area 110 further includes a dielectric layer 103 located between the pixel circuit layer 105 and the gate drive circuit layer 102, and the dielectric layer 103 includes an insulating material.

[0068] In this embodiment, by separating the pixel circuit layer 105 and the gate drive circuit layer 102 by the dielectric layer 103 containing insulating material, the interlayer electrical connection can be effectively blocked, the insulation performance can be improved, leakage and crosstalk can be prevented, the drive circuit can be ensured to operate stably, and the reliability of the display panel 100 can be improved.

[0069] refer to Figures 3-5b In one optional embodiment, the border area 120 includes a first border area 121, a second border area 122, a third border area 123 and a fourth border area 124 connected in sequence, with the first area 111 adjacent to the first border area 121 and the second area 112 adjacent to the third border area 123.

[0070] In this embodiment, by setting the first region 111 adjacent to the first border region 121 and the second region 112 adjacent to the third border region 123, a symmetrical distribution structure is formed, which is beneficial for balancing the layout of the driving circuit, optimizing the wiring path, improving signal transmission efficiency, and providing symmetrical force support for subsequent module packaging, thereby improving structural stability.

[0071] refer to Figure 3 and Figure 5b In an optional embodiment, the display area 110 further includes a third area 113 located between the first area 111 and the second area 112. The third area 113 includes a dielectric layer 103, a pixel circuit layer 105 and a light-emitting layer 104 sequentially stacked along the direction away from the substrate 101.

[0072] In this embodiment, the film layer setting portion of the third region 113 located in the display region 110 does not include the gate driving circuit layer 102. Thus, in the third region 113, the orthographic projection of the pixel circuit layer 105 on the substrate 101 does not overlap with the orthographic projection of the gate driving circuit layer 102 on the substrate 101.

[0073] It should be noted that, in other embodiments, the gate drive circuit layer 102 may be partially or entirely disposed in the third region 113, depending on the actual design requirements.

[0074] refer to Figure 3 and Figure 6 In one optional embodiment, the display panel 100 includes a crack detection circuit layer 106 located on one side of the substrate 101, the crack detection circuit layer 106 being located in at least one of the first frame region 121 or the third frame region 123.

[0075] In this embodiment, a crack detection circuit layer 106 is provided in the first border area 121 and / or the third border area 123. This enables real-time monitoring of whether there are crack defects in the film layer at the edge of the panel, improving product reliability testing capabilities. It is particularly suitable for monitoring micro-cracks that may occur in the flexible display panel 100 during bending or stress, thereby improving the quality control level of the display panel 100. It should be noted that the crack detection circuit layer 106 is located in the peripheral areas of the first border area 121 and the third border area 123. The crack detection circuit layer 106 can also be located in the peripheral areas of the second border area 122 and the fourth border area 124. Furthermore, there is a certain distance between the crack detection circuit layer 106 and the display area.

[0076] In one optional embodiment, at least a portion of the film layer of the crack detection circuit layer 106 is disposed on the same layer as the pixel circuit layer 105.

[0077] In this embodiment, since the crack detection circuit layer 106 includes a metal layer and the pixel circuit layer 105 also includes a metal layer, at least a portion of the film layer of the crack detection circuit layer 106 and the pixel circuit layer 105 are disposed in the same layer, which can realize the synchronous fabrication of at least a portion of the film layer of the crack detection circuit layer 106 and the film layer in the pixel circuit layer 105, thus simplifying the process steps.

[0078] As an optional embodiment, the display panel 100 further includes a bonding area located in the second border area 122 or the fourth border area 124.

[0079] In this embodiment, the binding area is generally located in the area where the bottom border of the display panel 100 is located. In this embodiment, the second border area 122 or the fourth border area 124 is the area where the bottom border of the display panel 100 is located. Thus, the first border area 121 and the third border area 123 are the areas where the left and right borders of the display panel 100 are located.

[0080] refer to Figure 3 and Figure 6 In an optional embodiment, the display panel 100 further includes an encapsulation layer 107, which is located on the side of the light-emitting layer 104 away from the substrate 101, and the boundary of the orthographic projection of the encapsulation layer 107 on the substrate 101 is located between the orthographic projection of the crack detection circuit layer 106 on the substrate 101 and the display area 110.

[0081] In this embodiment, the stability of the display panel 100 can be effectively improved by setting the encapsulation layer 107. Compared to the prior art where the gate drive circuit layer 102 of the bezel area 120 is located in the first region 111 and the second region 112 of the display area 110, the encapsulation layer 107 of the bezel area 120 no longer needs to encapsulate and protect the gate drive circuit layer 102. The encapsulation layer 107 of the bezel area 120 is recessed inwards towards the display area 110 compared to the prior art, and the encapsulation boundary of the encapsulation layer 107 is located between the crack detection circuit layer 106 and the display area 110. It should be noted that... Figure 6 The image shows a cross-sectional view of the film layer in the first border region 121 and the first region 111. The film layer positions in the third border region 123 and the second region 112 are... Figure 6 The positions of the membrane layers are the same, so they will not be described in detail here.

[0082] Figure 7 This is a cross-sectional structural schematic diagram of the display module 200 provided in some embodiments of this application; Figure 8 This is a cross-sectional view of the display module 200 provided in some other embodiments of this application; Figure 9 This is a cross-sectional structural schematic diagram of the display module 200 provided in some embodiments of this application; Figure 10 This is a cross-sectional structural schematic diagram of the display module 200 provided in some embodiments of this application; Figure 11 This is provided by some embodiments of this application. Figure 7 and Figure 8 A top view of the structure of the middle ink layer 208.

[0083] refer to Figures 7-8 A second aspect of this application provides a display module 200, comprising: a cover plate 201; a first display panel 210 located on one side of the cover plate 201; a second display panel 220 located on the side of the first display panel 210 near the cover plate 201; the first display panel 210 and the second display panel 220 are selected from the display panel 100 in the above embodiments; the orthographic projection of the second border area 122 of the first display panel 210 on the plane of the cover plate 201 and the orthographic projection of the first border area 121 of the second display panel 220 on the plane of the cover plate 201 partially overlap; a support layer 202, the support layer 202 comprising a first support portion 2021 located on the side of the first display panel 210 away from the cover plate 201 and a second support portion 2022 located on the side of the second display panel 220 near the cover plate 201; the orthographic projection of the first support portion 2021 on the plane of the cover plate 201 and the orthographic projection of the second support portion 2022 on the plane of the cover plate 201 partially overlap.

[0084] In this embodiment, by splicing the first display panel 210 and the second display panel 220, and making the second border area 122 of the first display panel 210 and the first border area 121 of the second display panel 220 overlap on the plane where the cover plate 201 is located, the space occupied by the side borders can be reduced, allowing the display areas 110 of the two display panels 100 to be as close as possible, reducing the physical splicing gap, and improving the continuity and visual unity of the entire screen. At the same time, by splicing the two display panels 100 in the above embodiment, the left and right borders of the spliced ​​display module 200 can be narrowed. In addition, the overlapping design of the first support part 2021 corresponding to the first display panel 210 and the second support part 2022 corresponding to the second display panel 220 in the support layer 202 ensures the structural strength of the display module 200, improves the impact resistance of the module, and achieves a narrow-bezel splicing display effect, which is suitable for large-size splicing screen application scenarios.

[0085] refer to Figure 7 and Figure 9 In some embodiments, the orthographic projection of the first support portion 2021 on the plane where the cover plate 201 is located covers the orthographic projections of the first display panel 210 and the second display panel 220 on the plane where the cover plate 201 is located.

[0086] In this embodiment, the orthographic projection of the first support portion 2021 covers the entire area of ​​the double-layer display panel 100, which can provide uniform mechanical support, prevent local stress concentration, and effectively improve the overall structural strength and bending resistance of the display module 200.

[0087] refer to Figure 7 and Figure 9 In one optional embodiment, the orthographic projection of the second support 2022 on the plane of the cover plate 201 overlaps with the orthographic projection of the second display panel 220 on the plane of the cover plate 201.

[0088] In this embodiment, by making the second support 2022 overlap with the orthographic projection of the second display panel 220, precise alignment support can be achieved, ensuring that the second display panel 220 is subjected to uniform force, avoiding the second display panel 220 from shifting or warping during the splicing process or during the use of the display module 200, and improving the display consistency and reliability of the display module 200.

[0089] refer to Figure 7 and Figure 9 In one optional embodiment, the thickness of the second support portion 2022 is equal to the thickness of the first display panel 210; the surface of the second support portion 2022 near the cover plate 201 is flush with the surface of the first display panel 210 near the cover plate 201.

[0090] In this embodiment, by controlling the thickness of the second support 2022 to be consistent with that of the first display panel 210 and making their surfaces flush, the step between the first display panel 210 and the second display panel 220 can be completely filled, avoiding stress concentration problems caused by the step.

[0091] refer to Figure 7 and Figure 9 In one optional embodiment, the thickness of the second support 2022 is greater than or equal to 30 μm and less than or equal to 40 μm.

[0092] In this embodiment, the thickness of the second support portion 2022 can be 30μm, 32μm, 34μm, 36μm, 38μm, or 40μm, etc. Controlling the thickness of the second support portion 2022 within the range of 30μm to 40μm ensures sufficient structural support strength while avoiding limitations on the overall ultra-thinness of the display module 200 due to excessive thickness, thus balancing the requirements for both the thinness and structural stability of the display module 200.

[0093] refer to Figure 9 As an optional embodiment, the display module 200 further includes a buffer layer 203 located on the side of the first support portion 2021 away from the cover plate 201.

[0094] In this embodiment, a buffer layer 203 is provided on the side of the first support portion 2021 away from the cover plate 201. This buffer layer can absorb external impact forces, alleviate vibration and pressure transmission, improve the drop resistance and compression resistance of the display module 200, and extend its service life. It should be noted that the buffer layer 203 in this embodiment may include a buffer material or a heat dissipation material. Thus, the buffer layer 203 can achieve both the effects of improving the impact resistance and heat dissipation of the display module 200.

[0095] refer to Figure 7 and Figure 9 In one optional embodiment, the first support portion 2021 and the second support portion 2022 are an integrated structure.

[0096] In this embodiment, the first support portion 2021 and the second support portion 2022 are designed as an integrated structure. This allows the two display panels 100 in the splicing display module 200 to share a single integrated support layer 202, reducing the film layer preparation process of the display module 200, improving production efficiency, and avoiding the interface separation risk associated with separate structures, thereby enhancing the structural integrity and reliability of the display module 200. It should be noted that the integrated structure of the first support portion 2021 and the second support portion 2022 specifically means that the materials of the first support portion 2021 and the second support portion 2022 are the same, and they are a single structure without a film layer interface.

[0097] refer to Figures 8-10 In some embodiments, the orthographic projection of the first support portion 2021 on the plane of the cover plate 201 overlaps with the orthographic projection of the first display panel 210 on the plane of the cover plate 201; and / or, the orthographic projection of the second support portion 2022 on the plane of the substrate 101 overlaps with the orthographic projection of the second display panel 220 on the plane of the substrate 101.

[0098] In this embodiment, by making the first support portion 2021 overlap with the orthographic projection of the first display panel 210, and the second support portion 2022 overlap with the orthographic projection of the second display panel 220, it is possible to achieve that the first support portion 2021 and the first display panel 210 are the same size, and the second support portion 2022 and the second display panel 220 are the same size, thereby achieving precise support and positioning, ensuring that each functional layer in the display panel 100 is subjected to uniform force, preventing displacement, warping or delamination, and improving the stability of the module structure and display quality.

[0099] refer to Figures 8-10 In one optional embodiment, a portion of the second support portion 2022 is located between the first display panel 210 and the second display panel 220.

[0100] In this embodiment, a portion of the second support portion 2022 is disposed between the two display panels 100, which can provide intermediate layer support, enhance the connection strength between layers, and improve the overall structural rigidity of the splicing display module 200.

[0101] refer to Figures 8-10 In one optional embodiment, the orthographic projection of the first support 2021 onto the plane of the cover plate 201 is equal to the orthographic projection area of ​​the second support 2022 onto the plane of the cover plate 201.

[0102] In this embodiment, the first support portion 2021 and the second support portion 2022 have equal projected areas, and their sizes are identical. This allows the display module 200 to achieve symmetrical force distribution, avoiding uneven stress due to area differences and improving the structural stability of the display module 200. When the projected area of ​​the first support portion 2021 on the plane of the cover plate 201 overlaps with the projected area of ​​the first display panel 210 on the plane of the cover plate 201, and the projected area of ​​the second support portion 2022 on the plane of the substrate 101 overlaps with the projected area of ​​the second display panel 220 on the plane of the substrate 101, the sizes of the first display panel 210 and the second display panel 220 are identical. The bonding processes for the first display panel 210 and the first support portion 2021, and for the second display panel 220 and the second support portion 2022, are completely identical, eliminating the need for differentiated design, reducing the difficulty of alignment and bonding, and improving alignment and bonding accuracy.

[0103] refer to Figures 9-10 In an optional embodiment, the display module 200 further includes a filling adhesive layer 204 located on the side of the second support portion 2022 away from the cover plate 201, and the surface of the filling adhesive layer 204 away from the cover plate 201 is flush with the surface of the first support portion 2021 away from the cover plate 201.

[0104] In this embodiment, by providing a filler adhesive layer 204 on the side of the second support portion 2022 away from the cover plate 201, and making its surface flush with the surface of the first support portion 2021, height compensation and flattening treatment between the second support portion 2022 and the first display panel 210 and the first support plate can be achieved. It should be noted that the material of the filler adhesive layer 204 may include at least one of silicone, polyurethane, epoxy resin, UV optical adhesive or acrylic adhesive. By adjusting the type of material of the filler adhesive layer 204, the first display panel 210, the first support portion 2021 and the second support portion 2022 can be firmly bonded, and a buffering and shock absorption function can be achieved.

[0105] refer to Figure 10 As an optional embodiment, the display module 200 further includes a buffer layer 203 located on the side of the first support portion 2021 and the filling adhesive layer 204 away from the cover plate 201.

[0106] In this embodiment, a buffer layer 203 is provided on the side of the first support portion 2021 and the filling adhesive layer 204 away from the cover plate 201. This buffer layer can absorb external impact forces, alleviate vibration and pressure transmission, improve the drop resistance and compression resistance of the display module 200, and extend its service life. It should be noted that the buffer layer 203 in this embodiment may include a buffer material or a heat dissipation material. In this way, the buffer layer 203 can achieve both the effects of improving the impact resistance and heat dissipation of the display module 200.

[0107] refer to Figures 7-10 In some embodiments, the orthographic projection of the display area 110 of the first display panel 210 onto the cover plate 201 and the orthographic projection of the display area 110 of the second display panel 220 onto the cover plate 201 are staggered.

[0108] In this embodiment, by staggering the display areas 110 of the first display panel 210 and the second display panel 220, the display areas 110 of the two panels do not obstruct each other and do not affect the normal light emission of the display areas 110. This enables splicing display, expands the effective display area, and is suitable for borderless or multi-screen fusion display scenarios, enhancing the visual immersion. Furthermore, the circuit traces in the two display panels 100 can be staggered and do not interfere with each other, facilitating mechanical assembly.

[0109] refer to Figures 7-10In one optional embodiment, the orthographic projection of the second border area 122 of the first display panel 210 onto the cover plate 201 overlaps with the orthographic projection of the first border area 121 of the second display panel 220 onto the cover plate 201.

[0110] In this embodiment, by making the second border area 122 of the first display panel 210 and the first border area 121 of the second display panel 220 project to overlap, the splicing seam can be hidden in the splicing area. When viewed by the human eye, the black border gap of the traditional splicing is not visible, which greatly weakens the splicing seam, improves the appearance and achieves the overall display appearance of reducing the splicing seam between the two display panels 100.

[0111] refer to Figures 9-10 In one optional embodiment, the display module 200 further includes a first optical adhesive layer 205, which is located on the side of the first display panel 210 near the cover plate 201, and the surface of the first optical adhesive layer 205 near the cover plate 201 is flush with the surface of the second display panel 220 near the cover plate 201.

[0112] In this embodiment, by setting the first optical adhesive layer 205 and making its surface flush with the surface of the second display panel 220, surface flatness can be achieved, which is beneficial for bonding the first display panel 210 to other film layers near the cover plate 201. It should be noted that the material of the first optical adhesive layer 205 can also be used to reduce differences in light reflection and refraction, thereby improving the visual consistency between the first display panel 210 and the second display panel 220.

[0113] refer to Figures 9-10 In one optional embodiment, the display module 200 further includes a polarizing layer 207, which is located on the side of the first optical adhesive layer 205 and the second display panel 220 near the cover plate 201.

[0114] In this embodiment, a polarizing layer 207 is provided on the side of the first optical adhesive layer 205 and the second display panel 220 near the cover plate 201, so that the first display panel 210 and the second display panel 220 can share the same polarizing layer 207, reducing the difficulty of the manufacturing process and improving the integrity and reliability of the splicing display module 200. In addition, the introduction of the polarizing layer 207 can effectively suppress ambient light reflection, improve outdoor display performance, and enhance the visual experience.

[0115] refer to Figures 9-10 In one optional embodiment, the display module 200 further includes a second optical adhesive layer 206, which is located between the polarizing layer 207 and the cover plate 201.

[0116] In this embodiment, by providing the second optical adhesive layer 206, a good fit can be achieved between the polarizing layer 207 and the cover plate 201, reducing the gap between the two, reducing interface reflection, and improving optical transmittance and display brightness of the display module 200.

[0117] refer to Figures 9-11 In one optional embodiment, the display module 200 further includes an ink layer 208 located between the second optical adhesive layer 206 and the cover plate 201; wherein the orthographic projection of the ink layer 208 on the plane of the cover plate 201 overlaps with the orthographic projection of the border area 120 of the first display panel 210 on the plane of the cover plate 201; and / or, the orthographic projection of the ink layer 208 on the plane of the cover plate 201 overlaps with the orthographic projection of the border area 120 of the second display panel 220 on the plane of the cover plate 201.

[0118] In this embodiment, by setting an ink layer 208 and having its orthographic projection on the plane of the cover plate 201 overlap with the orthographic projection of the border area 120 of the first display panel 210 and / or the second display panel 220 on the plane of the cover plate 201, the boundaries of the circuits, traces and encapsulation layers in the border area 120 can be effectively blocked, preventing light leakage from the splicing display module 200, preventing ambient light or reflected light from leaking in from the middle gap, avoiding light leakage and halo at the edge of the splicing of the first display panel 210 and the second display panel 220, improving the aesthetic appearance, and enhancing the visual continuity of the display area 110 of the first display panel 210 and the second display panel 220.

[0119] refer to Figures 9-11 In one optional embodiment, the orthographic projection of the ink layer 208 on the plane of the cover plate 201 is offset from the orthographic projection of the display area 110 of the first display panel 210 on the plane of the cover plate 201; and / or, the orthographic projection of the ink layer 208 on the plane of the cover plate 201 is offset from the orthographic projection of the display area 110 of the second display panel 220 on the plane of the cover plate 201.

[0120] In this embodiment, by making the ink layer 208 avoid the orthographic projection of the display area 110 of the first display panel 210 and / or the second display panel 220, the effective light-emitting area can be avoided, thus ensuring the display brightness and uniformity of the display module 200.

[0121] refer to Figures 9-11In one optional embodiment, the ink layer 208 includes a first part 2081, a second part 2082, a third part 2083, and a fourth part 2084 connected in sequence, and a fifth part 2085 connecting the second part 2082 and the fourth part 2084; wherein, along a direction parallel to the cover plate 201 and along the first display panel 210 pointing to the second display panel 220, the width of the fifth part 2085 is less than the width of the third border area 123 of the first display panel 210; and / or, along a direction parallel to the cover plate 201 and along the first display panel 210 pointing to the second display panel 220, the width of the first part 2081 is greater than the width of the first border area 121 of the first display panel 210, and the width of the third part 2083 is greater than the width of the third border area 123 of the second display panel 220.

[0122] In this embodiment, the ink layer 208 can flexibly adapt to the layout of the bezel area 120 of the display panel 100, achieving precise masking of the bezel area 120 of the first display panel 210 or the second display panel 220, thus improving the aesthetic effect of the integrated appearance. By controlling the width of the fifth part 2085 of the ink layer 208 to be smaller than the width of the third bezel area 123, the splicing gap is hidden, and at the same time, to a certain extent, the fifth part 2085 of the ink layer 208 is prevented from obscuring the display area 110 of the first display panel 210 or the display area 110 of the second display panel 220 due to the bonding tolerance. To avoid the first border area 121 of the first display panel 210 and the third border area 123 of the second display panel 220 not being effectively shielded due to fitting tolerances, the width of the first part 2081 is controlled to be greater than the width of the first border area 121 of the first display panel 210, and the width of the third part 2083 is greater than the width of the third border area 123 of the second display panel 220. This effectively shields the boundaries of circuits, traces, and encapsulation layers in the first border area 121 of the first display panel 210 and the third border area 123 of the second display panel 220. Furthermore, since the edges of the first display panel 210 and the second display panel 220 do not exceed the edge of the cover plate 201, the display module 200 also includes a middle frame surrounding the spliced ​​first display panel 210 and the second display panel 220, which can also shield the middle frame, achieving a visually appealing effect.

[0123] It should be noted that when the orthographic projection of the second border area 122 of the first display panel 210 onto the plane of the cover plate 201 and the orthographic projection of the first border area 121 of the second display panel 220 onto the plane of the cover plate 201 overlap, the width of the fifth part 2085 is smaller than the width of the third border area 123 of the first display panel 210 along the direction parallel to the cover plate 201 and along the direction from the first display panel 210 to the second display panel 220, which is equivalent to the width of the fifth part 2085 being smaller than the width of the first border area 121 of the second display panel 220.

[0124] Reference Figures 12-14 The third aspect of this application provides a method for manufacturing a display module 200, which includes the following steps: S100: Provide a first display panel 210 and a second display panel 220; the first display panel 210 and the second display panel 220 are selected from the display panel 100 in the above embodiments.

[0125] S200: The non-light-emitting side B of the first display panel 210 and the non-light-emitting side B of the second display panel 220 are respectively attached to the first support portion 2021 and the second support portion 2022.

[0126] S300: The side of the first display panel 210 away from the first support portion 2021 and the side of the second display panel 220 away from the second support portion 2022 are attached to the structural layer 230 of the cover plate 201; wherein, the orthographic projection of the second border area 122 of the first display panel 210 on the plane of the cover plate 201 and the orthographic projection of the first border area 121 of the second display panel 220 on the plane of the cover plate 201 overlap; the orthographic projection of the first support portion 2021 on the plane of the cover plate 201 and the orthographic projection of the second support portion 2022 on the plane of the cover plate 201 overlap.

[0127] In this embodiment, the manufacturing method achieves precise assembly of the first display panel 210 with the first support structure and the second display panel 220 with the second support structure through a bonding process, ensuring the alignment accuracy of each layer and improving the yield of the display module 200. Simultaneously, by overlapping the orthographic projection of the second border area 122 of the first display panel 210 onto the plane of the cover plate 201 and the orthographic projection of the first border area 121 of the second display panel 220 onto the plane of the cover plate 201, and by overlapping the orthographic projections of the first support portion 2021 onto the plane of the cover plate 201 and the second support portion 2022 onto the plane of the cover plate 201, a dual effect of narrow-slit splicing and structural reinforcement can be achieved. This method exhibits strong process compatibility and is suitable for mass production.

[0128] It should be noted that the orthographic projection of the display area 110 of the first display panel 210 onto the cover plate 201 and the orthographic projection of the display area 110 of the second display panel 220 onto the cover plate 201 are staggered. This ensures that the display areas 110 of the two display panels 100 do not obstruct each other and do not affect the normal light emission of the display areas 110, enabling splicing displays, expanding the effective display area, and making it suitable for borderless or multi-screen fusion display scenarios, thus enhancing visual immersion. Furthermore, in step S300, the structural layer 230 of the cover plate 201 can be pre-aligned with the first display panel 210 and the second display panel 220, and then pressed together using a vacuum bonding method.

[0129] Reference Figure 13 In some embodiments, step S200, which involves attaching the non-light-emitting side B of the first display panel 210 and the non-light-emitting side B of the second display panel 220 to the first support portion 2021 and the second support portion 2022 respectively, includes: providing an integrated first support portion 2021 and a second support portion 2022; attaching the non-light-emitting side B of the first display panel 210 to the exposed surface of the first support portion 2021 facing the second support portion 2022; and attaching the non-light-emitting side B of the second display panel 220 to the surface of the second support portion 2022 away from the first support portion 2021; wherein the second support portion 2022 covers a portion of the surface of the first support portion 2021.

[0130] In this embodiment, the integrated first support portion 2021 and second support portion 2022 constitute a support layer 202, which is beneficial to improving the assembly accuracy of the two display panels 100 and the support portion and the overall stability of the display module 200, and facilitates the integration of a highly reliable splicing display module 200. It should be noted that the exposed surface of the first support portion 2021 facing the second support portion 2022 refers to the surface of the first support portion 2021 facing the second support portion 2022 and not obstructed by the second support portion 2022. The first display panel 210 is attached to the thinner part of the support layer 202, and the second display panel 220 is attached to the thicker part of the support layer 202.

[0131] Reference Figure 13 As an optional embodiment, an integrated first support portion 2021 and a second support portion 2022 are provided. After the step of attaching the non-light-emitting side B of the first display panel 210 to the exposed surface of the first support portion 2021 facing the second support portion 2022, and attaching the non-light-emitting side B of the second display panel 220 to the surface of the second support portion 2022 away from the first support portion 2021, the method includes: preparing a first optical adhesive layer 205 with a surface flush with the surface of the second display panel 220 on the light-emitting side A of the first display panel 210. In this embodiment, by preparing a first optical adhesive layer 205 with a surface flush with the surface of the second display panel 220 on the light-emitting side A of the first display panel 210, the height difference in the splicing area can be eliminated, improving the display uniformity and visual continuity of the splicing display module 200. Furthermore, since the surface of the first optical adhesive layer 205 is flush with the surface of the second display panel 220, the other film layers above the first display panel 210 and the second display panel 220 will not tilt after being bonded, thus not affecting the display effect of the two display panels 100.

[0132] Reference Figure 13In one optional embodiment, after the step of preparing a first optical adhesive layer 205 with a surface flush with the surface of the second display panel 220 on the light-emitting side A of the first display panel 210, a polarizing layer 207 is prepared on the surfaces of the first optical adhesive layer 205 and the second display panel 220.

[0133] In this embodiment, the polarizing layer 207 can be fabricated as a single surface. The first display panel 210 and the second display panel 220 share a single display panel 100, effectively avoiding performance differences in the polarizing layer 207 caused by regional bonding, thus improving the display quality of the splicing display module 200. It should be noted that a roller bonding method can be used to bond the polarizing layer 207 to the surfaces of the first optical adhesive layer 205 and the second display panel 220.

[0134] Reference Figure 13 In an optional embodiment, step S300, which involves attaching the side of the first display panel 210 away from the first support portion 2021 and the side of the second display panel 220 away from the second support portion 2022 to the cover plate 201 structural layer 230, includes: preparing an ink layer 208 on one side of the cover plate 201, preparing a second optical adhesive layer 206 on the side of the cover plate 201 facing the ink layer 208 to obtain the cover plate 201 structural layer 230, and attaching the second optical adhesive layer 206 to the polarizing layer 207.

[0135] In this embodiment, the second optical adhesive layer 206 is used to bond with the polarizing layer 207. The ink layer 208 can be prepared by screen printing.

[0136] Reference Figure 13 As an optional embodiment, an integrated first support portion 2021 and a second support portion 2022 are provided. The step of attaching the non-light-emitting side B of the first display panel 210 to the exposed surface of the first support portion 2021 facing the second support portion 2022, and attaching the non-light-emitting side B of the second display panel 220 to the surface of the second support portion 2022 away from the first support portion 2021, includes: providing a support composite layer comprising a protective film 400, the first support portion 2021, the second support portion 2022, and a release film 300 sequentially stacked, wherein... The surface of the first support portion 2021 away from the protective film 400 is attached to the first release film 310, and the surface of the second support portion 2022 away from the protective film 400 is attached to the second release film 320. The first release film 310 is removed, and the non-light-emitting side B of the first display panel 210 is attached to the exposed side of the first support portion 2021. The second release film 320 is removed, and the non-light-emitting side B of the second display panel 220 is attached to the surface of the second support portion 2022 away from the first support portion 2021.

[0137] In this embodiment, the release film 300 is designed with a half-cut shape, consisting of a first release film 310 corresponding to the thinner portion of the support layer 202 and a second release film 320 corresponding to the thicker portion of the support layer 202. Before bonding the first display panel 210, the first release film 310 is removed; before bonding the second display panel 220, the second release film 320 is removed. Furthermore, a protective film 400 is designed on the surface of the first support portion 2021 in the support layer 202 that faces away from the second support portion 2022. This design prevents film contamination and damage during the manufacturing process, improving production yield. It should be noted that pressure-sensitive adhesive is present between the release film 300 and the support layer 202. After the release film 300 is removed, the pressure-sensitive adhesive remains on the surface of the support layer 202, serving to bond the support layer 202 to the display panel 100. The release film 300 can be made of polyethylene terephthalate (PET), and its thickness corresponds to that of the support layer 202. The difference in thickness between the first release film 310 corresponding to the thinner portion of the support layer 202 and the second release film 320 corresponding to the thicker portion of the support layer 202 is greater than or equal to 30 μm and less than or equal to 40 μm. This difference in thickness can be 30 μm, 32 μm, 34 μm, 36 μm, 38 μm, or 40 μm, etc. Specifically, the difference in thickness between the first release film 310 corresponding to the thinner portion of the support layer 202 and the second release film 320 corresponding to the thicker portion of the support layer 202 is equal to the thickness of the first display panel 210.

[0138] Reference Figure 13 In one optional embodiment, an ink layer 208 is prepared on one side of the cover plate 201, and a second optical adhesive layer 206 is prepared on the side of the cover plate 201 facing the ink layer 208 to obtain a cover plate 201 structural layer 230. After the step of bonding the second optical adhesive layer 206 to the polarizing layer 207, the method includes: removing the protective film 400 on one side of the second support portion 2022, and bonding the buffer layer 203 to the side of the first support portion 2021 away from the cover plate 201 and the side of the second support portion 2022 away from the cover plate 201.

[0139] In this embodiment, the attached buffer layer 203 enhances the mechanical protection of the back of the spliced ​​display module 200, improves its impact resistance and environmental tolerance, and extends the product's lifespan. Furthermore, the buffer layer 203 may also include a heat-dissipating material, which facilitates heat dissipation from the display module 200.

[0140] Reference Figure 14In some embodiments, before the step of attaching the side of the first display panel 210 away from the first support portion 2021 and the side of the second display panel 220 away from the second support portion 2022 to the cover plate 201 structural layer 230, the method includes: preparing a filler adhesive layer 204 on the side surfaces of the first display panel 210 and the first support portion 2021 with a thickness equal to the sum of the thicknesses of the first display panel 210 and the first support portion 2021.

[0141] In this embodiment, it should be noted that the filler adhesive material layer is prepared on the transparent support film layer and closely adhered to the side of the first display panel 210 and the first support portion 2021. After curing, the filler adhesive layer 204 is obtained. Then, the transparent support film layer can be removed by light irradiation on the back side of the transparent support film layer.

[0142] It should be noted that, Figure 14 In the display module 200 obtained in the process, the first display panel 210, the second display panel 220, the first support portion 2021, and the second support portion 2022 are the same size, and the materials and other parameters of the first support portion 2021 and the second support portion 2022 are exactly the same. Therefore, the first support portion 2021 and the second support portion 2022 do not require differentiated design. Figure 14 The display module 200 is easier to manufacture.

[0143] Reference Figure 14 In an optional embodiment, step S300, which involves attaching the side of the first display panel 210 away from the first support portion 2021 and the side of the second display panel 220 away from the second support portion 2022 to the cover plate 201 structural layer 230, includes: preparing an ink layer 208 on one side of the cover plate 201, preparing a second optical adhesive layer 206 on the side of the cover plate 201 facing the ink layer 208 to obtain the cover plate 201 structural layer 230, and attaching the second optical adhesive layer 206 to the polarizing layer 207.

[0144] In this embodiment, the second optical adhesive layer 206 is used to bond with the polarizing layer 207. The ink layer 208 can be prepared by screen printing.

[0145] Reference Figure 14 In one optional embodiment, before the step of attaching the side of the first display panel 210 away from the first support portion 2021 and the side of the second display panel 220 away from the second support portion 2022 to the cover plate 201 structural layer 230, the method includes attaching the side of the second support portion 2022 away from the second display panel 220 to the filler adhesive layer 204.

[0146] In this embodiment, the filler adhesive layer 204 can be used to bond the second support portion 2022.

[0147] Reference Figure 14In one optional embodiment, after the step of bonding the side of the second support 2022 away from the second display panel 220 to the filling adhesive layer 204, a first optical adhesive layer 205 is prepared on the light-emitting side A of the first display panel 210 with a surface flush with the surface of the second display panel 220.

[0148] In this embodiment, the first optical adhesive layer 205 can eliminate the height difference in the splicing area and improve the display uniformity and visual continuity of the splicing display module 200.

[0149] Reference Figure 14 In one optional embodiment, after the step of preparing a first optical adhesive layer 205 with a surface flush with the surface of the second display panel 220 on the light-emitting side A of the first display panel 210, a polarizing layer 207 is prepared on the surfaces of the first optical adhesive layer 205 and the second display panel 220.

[0150] In this embodiment, the polarizing layer 207 can be fabricated as a single surface. The first display panel 210 and the second display panel 220 share a single display panel 100, effectively avoiding performance differences in the polarizing layer 207 caused by regional bonding, thus improving the display quality of the splicing display module 200. It should be noted that a roller bonding method can be used to bond the polarizing layer 207 to the surfaces of the first optical adhesive layer 205 and the second display panel 220.

[0151] Reference Figure 14 In one optional embodiment, the step of attaching the side of the first display panel 210 away from the first support portion 2021 and the side of the second display panel 220 away from the second support portion 2022 to the cover plate 201 structural layer 230 includes: preparing an ink layer 208 on one side of the cover plate 201, preparing a second optical adhesive layer 206 on the side of the cover plate 201 facing the ink layer 208 to obtain the cover plate 201 structural layer 230, and attaching the second optical adhesive layer 206 to the polarizing layer 207.

[0152] In this embodiment, the second optical adhesive layer 206 is used to bond with the polarizing layer 207. The ink layer 208 can be prepared by screen printing.

[0153] Reference Figure 14 In one optional embodiment, after the step of bonding one side of the second optical adhesive layer 206 in the cover plate 201 structural layer 230 to the polarizing layer 207, the step includes bonding the buffer layer 203 to the first support portion 2021 and the filling adhesive layer 204.

[0154] In this embodiment, attaching the buffer layer 203 to the first support portion 2021 and the filler adhesive layer 204 enhances the mechanical protection of the back of the spliced ​​display module 200, improves its impact resistance and environmental tolerance, and extends its product lifespan. Furthermore, the buffer layer 203 may also include a heat-dissipating material, which is beneficial for heat dissipation from the display module 200.

[0155] A third aspect of this application provides a display device 700, which includes the display panel 100 in the above embodiments, or the display module 200 in the above embodiments, or the display module 200 prepared by the preparation method in the above embodiments.

[0156] The display device 700 can be a mobile or fixed terminal with a display panel 100, such as a mobile phone, television, tablet computer, laptop computer, Ultra-Mobile Personal Computer (UMPC), Personal Digital Assistant (PDA), navigation device, smartwatch, virtual reality device, etc.

[0157] It should be noted that the display device 700 includes a display module 200 composed of two spliced ​​display panels 100. This display device 700, including the spliced ​​display module 200, can be applied to fields such as commercial advertising, conference and office work, security monitoring, transportation hubs, cultural and tourism exhibition halls, smart cities, automotive displays, industrial control, e-sports entertainment, and smart homes. The narrow bezel display panels 100, combined with narrow splicing gaps, ensure that multiple display panels 100 are spliced ​​without noticeable black seams or image fragmentation, achieving visual integration. In splicing applications, it guarantees complete and continuous display of images, text, and charts across screens, avoiding line breaks, information obstruction, and visual gaps. Simultaneously, it enhances the overall aesthetics and immersive experience, making it suitable for use scenarios with high requirements for visual integrity, such as commercial displays, command and dispatch, automotive, and home applications.

[0158] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0159] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A display panel having a display area and a border area surrounding the display area, characterized in that, include: substrate; A gate driving circuit layer, a pixel circuit layer, and a light-emitting layer are sequentially stacked on one side of the substrate and in a direction away from the substrate; The gate driving circuit layer, the pixel circuit layer, and the light-emitting layer are located in the first and second regions of the display area near the border area, and the first and second regions are arranged opposite to each other.

2. The display panel according to claim 1, characterized in that, The display area further includes a dielectric layer, which is located between the pixel circuit layer and the gate driving circuit layer; the dielectric layer includes an insulating material. Preferably, the border area includes a first border area, a second border area, a third border area, and a fourth border area connected in sequence, wherein the first border area is adjacent to the first border area, and the second border area is adjacent to the third border area; Preferably, the display area further includes a third area located between the first area and the second area, the third area including the dielectric layer, the pixel circuit layer and the light-emitting layer sequentially stacked along the direction away from the substrate; Preferably, the display panel includes a crack detection circuit layer located on one side of the substrate, the crack detection circuit layer being located in at least one of the first frame area or the third frame area; Preferably, at least a portion of the film layer of the crack detection circuit layer is disposed on the same layer as the pixel circuit layer; Preferably, the display panel further includes a binding area, which is located in the second border area or the fourth border area; Preferably, the display panel further includes an encapsulation layer located on the side of the light-emitting layer away from the substrate, and the boundary of the orthographic projection of the encapsulation layer on the substrate is located between the orthographic projection of the crack detection circuit layer on the substrate and the display area.

3. A display module, characterized in that, include: Cover plate; A first display panel is located on one side of the cover plate; The second display panel is located on the side of the first display panel closer to the cover plate; the first display panel and the second display panel are selected from the display panels according to any one of claims 1 to 2; the orthographic projection of the second border area of ​​the first display panel on the plane where the cover plate is located and the orthographic projection of the first border area of ​​the second display panel on the plane where the cover plate is located partially overlap; The support layer includes a first support portion located on the side of the first display panel away from the cover plate and a second support portion located on the side of the second display panel close to the cover plate; the orthographic projections of the first support portion and the second support portion on the plane of the cover plate overlap.

4. The display module according to claim 3, characterized in that, The orthographic projection of the first support portion on the plane where the cover plate is located covers the orthographic projections of the first display panel and the second display panel on the plane where the cover plate is located; Preferably, the orthographic projection of the second support portion on the plane of the cover plate overlaps with the orthographic projection of the second display panel on the plane of the cover plate; Preferably, the thickness of the second support portion is equal to the thickness of the first display panel; the surface of the second support portion near the cover plate is flush with the surface of the first display panel near the cover plate. Preferably, the thickness of the second support portion is greater than or equal to 30 μm and less than or equal to 40 μm; Preferably, the display module further includes a buffer layer located on the side of the first support portion away from the cover plate; Preferably, the first support portion and the second support portion are an integrated structure.

5. The display module according to claim 3, characterized in that, The orthographic projection of the first support portion on the plane where the cover plate is located overlaps with the orthographic projection of the first display panel on the plane where the cover plate is located; And / or, the orthographic projection of the second support portion on the plane of the substrate overlaps with the orthographic projection of the second display panel on the plane of the substrate; Preferably, a portion of the second support portion is located between the first display panel and the second display panel; Preferably, the orthographic projection of the first support portion onto the plane of the cover plate is equal to the orthographic projection area of ​​the second support portion onto the plane of the cover plate; Preferably, the display module further includes a filling adhesive layer located on the side of the second support portion away from the cover plate, wherein the surface of the filling adhesive layer away from the cover plate is flush with the surface of the first support portion away from the cover plate. Preferably, the display module further includes a buffer layer located on the side of the first support portion and the filling adhesive layer away from the cover plate.

6. The display module according to any one of claims 3 to 5, characterized in that, The orthographic projection of the display area of ​​the first display panel onto the cover plate and the orthographic projection of the display area of ​​the second display panel onto the cover plate are offset; Preferably, the orthographic projection of the second border area of ​​the first display panel onto the cover plate and the orthographic projection of the first border area of ​​the second display panel onto the cover plate overlap; Preferably, the display module further includes a first optical adhesive layer, which is located on the side of the first display panel near the cover plate, and the surface of the first optical adhesive layer near the cover plate is flush with the surface of the second display panel near the cover plate. Preferably, the display module further includes a polarizing layer, which is located on the side of the first optical adhesive layer and the second display panel near the cover plate; Preferably, the display module further includes a second optical adhesive layer, which is located between the polarizing layer and the cover plate; Preferably, the display module further includes an ink layer, which is located between the second optical adhesive layer and the cover plate; Wherein, the orthographic projection of the ink layer on the plane where the cover plate is located overlaps with the orthographic projection of the border area of ​​the first display panel on the plane where the cover plate is located; and / or, the orthographic projection of the ink layer on the plane where the cover plate is located overlaps with the orthographic projection of the border area of ​​the second display panel on the plane where the cover plate is located. Preferably, the orthographic projection of the ink layer on the plane of the cover plate is offset from the orthographic projection of the display area of ​​the first display panel on the plane of the cover plate; and / or, the orthographic projection of the ink layer on the plane of the cover plate is offset from the orthographic projection of the display area of ​​the second display panel on the plane of the cover plate. Preferably, the ink layer comprises a first part, a second part, a third part, and a fourth part connected in sequence, and a fifth part connecting the second part and the fourth part; Wherein, along a direction parallel to the cover plate and pointing from the first display panel to the second display panel, the width of the fifth part is less than the width of the third border area of ​​the first display panel; and / or, along a direction parallel to the cover plate and pointing from the first display panel to the second display panel, the width of the first part is greater than the width of the first border area of ​​the first display panel, and the width of the third part is greater than the width of the third border area of ​​the second display panel.

7. A method for manufacturing a display module, characterized in that: A first display panel and a second display panel are provided; the first display panel and the second display panel are selected from the display panels described in any one of claims 1 to 2. The non-light-emitting side of the first display panel and the non-light-emitting side of the second display panel are respectively attached to the first support portion and the second support portion; The side of the first display panel away from the first support and the side of the second display panel away from the second support are attached to the cover plate structure layer; Wherein, the orthographic projection of the second border area of ​​the first display panel on the plane where the cover plate is located and the orthographic projection of the first border area of ​​the second display panel on the plane where the cover plate is located partially overlap; The orthographic projections of the first support portion on the plane where the cover plate is located and the orthographic projections of the second support portion on the plane where the cover plate is located partially overlap.

8. The preparation method according to claim 7, characterized in that, The step of attaching the non-light-emitting side of the first display panel and the non-light-emitting side of the second display panel to the first support portion and the second support portion respectively includes: providing an integrated first support portion and a second support portion; attaching the non-light-emitting side of the first display panel to the exposed surface of the first support portion facing the second support portion; and attaching the non-light-emitting side of the second display panel to the surface of the second support portion away from the first support portion; wherein the second support portion covers a portion of the surface of the first support portion. Preferably, the first support portion and the second support portion, which are provided with an integrated design, include the following steps after the steps of attaching the non-light-emitting side of the first display panel to the exposed surface of the first support portion facing the second support portion and attaching the non-light-emitting side of the second display panel to the surface of the second support portion away from the first support portion: preparing a first optical adhesive layer with a surface flush with the surface of the second display panel on the light-emitting side of the first display panel; Preferably, after the step of preparing a first optical adhesive layer with a surface flush with the surface of the second display panel on the light-emitting side of the first display panel, the method further includes: preparing a polarizing layer on the surfaces of the first optical adhesive layer and the second display panel; Preferably, the step of bonding the side of the first display panel away from the first support and the side of the second display panel away from the second support with the cover plate structure layer includes: preparing an ink layer on one side of the cover plate, preparing a second optical adhesive layer on the side of the cover plate facing the ink layer to obtain the cover plate structure layer, and bonding the second optical adhesive layer with the polarizing layer. Preferably, the step of providing an integrated first support portion and a second support portion, and of attaching the non-light-emitting side of the first display panel to the exposed surface of the first support portion facing the second support portion, and attaching the non-light-emitting side of the second display panel to the surface of the second support portion away from the first support portion, includes: providing a support composite layer comprising a protective film, the first support portion, the second support portion, and a release film stacked sequentially, wherein a portion of the surface of the first support portion away from the protective film is attached to a first release film, and the surface of the second support portion away from the protective film is attached to a second release film; removing the first release film, attaching the non-light-emitting side of the first display panel to the exposed side of the first support portion; and removing the second release film, attaching the non-light-emitting side of the second display panel to the surface of the second support portion away from the first support portion. Preferably, the step of preparing an ink layer on one side of the cover plate, preparing a second optical adhesive layer on the side of the cover plate facing the ink layer to obtain the cover plate structural layer, and bonding the second optical adhesive layer to the polarizing layer includes: removing the protective film on one side of the second support portion, and bonding the buffer layer to the side of the first support portion away from the cover plate and the side of the second support portion away from the cover plate.

9. The preparation method according to claim 7, characterized in that, Before the step of bonding the side of the first display panel away from the first support and the side of the second display panel away from the second support with the cover plate structure layer, the method includes: preparing a filler adhesive layer on the side of the first display panel and the first support with a thickness equal to the sum of the thicknesses of the first display panel and the first support; Preferably, the step of bonding the side of the first display panel away from the first support and the side of the second display panel away from the second support with the cover plate structure layer includes: preparing an ink layer on one side of the cover plate, preparing a second optical adhesive layer on the side of the cover plate facing the ink layer to obtain the cover plate structure layer, and bonding the second optical adhesive layer with the polarizing layer. Preferably, before the step of bonding the side of the first display panel away from the first support portion and the side of the second display panel away from the second support portion to the cover plate structure layer, the method includes: bonding the side of the second support portion away from the second display panel to the filler adhesive layer; Preferably, after the step of bonding the side of the second support portion away from the second display panel to the filling adhesive layer, the method further includes: preparing a first optical adhesive layer on the light-emitting side of the first display panel with a surface flush with the surface of the second display panel; Preferably, after the step of preparing a first optical adhesive layer with a surface flush with the surface of the second display panel on the light-emitting side of the first display panel, the method further includes: preparing a polarizing layer on the surfaces of the first optical adhesive layer and the second display panel; Preferably, the step of bonding the side of the first display panel away from the first support and the side of the second display panel away from the second support to the cover plate structure layer includes: preparing an ink layer on one side of the cover plate, preparing a second optical adhesive layer on the side of the cover plate facing the ink layer to obtain the cover plate structure layer, and bonding the second optical adhesive layer to the polarizing layer. Preferably, after the step of bonding one side of the second optical adhesive layer in the cover plate structure layer to the polarizing layer, the method further includes bonding the buffer layer to the first support portion and the filling adhesive layer.

10. A display device, characterized in that, It includes the display panel according to any one of claims 1 to 2, or the display module according to any one of claims 3 to 6, or the display module prepared by the preparation method according to any one of claims 7 to 9.

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