Display panel, spliced display screen, intelligent cabin and display device

Abstract

The invention provides a display panel, a spliced display screen, an intelligent cabin and a display device. The problem that in the prior art, the display effect of a display product is poor is solved. The display panel is provided with a first display area and a first non-display area surrounding the first display area, and the display panel comprises a substrate; the light-emitting devices are located on one side of the substrate and located in the first display area; the limiting structure is located on one side of the substrate and located in the first non-display area, and the limiting structure at least partially surrounds the first display area; the shading structure is located in the first non-display area, and the edge, away from the first display area, of the shading structure does not exceed the side, away from the first display area, of the limiting structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display panel, a spliced display screen, an intelligent cockpit and a display device. BACKGROUND

[0002] With the rapid development of intelligent driving technology, intelligent cockpits are innovating the automotive industry at an unprecedented speed. As an indispensable display centering system of intelligent cockpits, the display effect of the display centering system still needs to be improved. SUMMARY

[0003] Therefore, the embodiments of the present application provide a display panel, a spliced display screen, an intelligent cockpit and a display device, which solve the problem of poor display effect of the display product in the prior art.

[0004] The first aspect of the present application provides a display panel having a first display area and a first non-display area surrounding the first display area, the display panel comprising: a substrate; a plurality of light emitting devices located on one side of the substrate and in the first display area; a limiting structure located on one side of the substrate and in the first non-display area, the limiting structure at least partially surrounding the first display area; and a light shielding structure located in the first non-display area, an edge of the light shielding structure away from the first display area not exceeding the limiting structure away from the first display area side.

[0005] In combination with the first aspect, in some possible implementation manners, the display panel further comprises an encapsulation structure, the encapsulation structure extending from the side of the light emitting device away from the substrate to the first non-display area; in the first non-display area, part of the encapsulation structure is located on the side of the light shielding structure close to the substrate, and part of the encapsulation structure is located on the side of the limiting structure away from or close to the substrate; preferably, in the direction from the first display area to the first non-display area, the encapsulation structure extends from the side of the light shielding structure close to the substrate to the side of the limiting structure close to the substrate; or, the encapsulation structure extends from the side of the light shielding structure close to the substrate to the side wall of the limiting structure close to the first non-display area, the side of the limiting structure away from the substrate, and the side wall of the limiting structure away from the first non-display area.

[0006] In some possible implementations, in combination with the first aspect, the limiting structure includes a first side wall away from the first display area and a second side wall close to the first display area, a distance between the first side wall away from the edge of the substrate and the substrate is greater than a distance between the second side wall away from the edge of the substrate and the substrate; preferably, the first side wall is perpendicular to the substrate; or, a projection of the first side wall away from the edge of the substrate on the substrate is located on a side close to the first display area relative to a projection of the first side wall close to the edge of the substrate on the substrate; preferably, the second side wall is perpendicular to the substrate; or, a projection of the second side wall away from the edge of the substrate on the substrate is located on a side away from the first display area relative to a projection of the second side wall close to the edge of the substrate on the substrate; preferably, the limiting structure further includes a connecting surface, the connecting surface connects the first side wall away from the edge of the substrate and the second side wall away from the edge of the substrate, the connecting surface is a plane or has a stepped structure.

[0007] In some possible implementations, in combination with the first aspect, the display panel further includes a plurality of support columns, the support columns are located between adjacent light emitting devices, a distance between the first side wall of the limiting structure away from the edge of the substrate and the substrate is equal to a distance between the support columns away from the surface of the substrate and the substrate; preferably, the display panel further includes a pixel definition layer, the pixel definition layer is located between the support columns and the substrate, the pixel definition layer encloses a pixel opening, at least part of the light emitting device is located in the pixel opening.

[0008] In some possible implementations, in combination with the first aspect, the display panel further includes at least one dam, the dam is located in the first non-display area and on a side of the limiting structure close to the first display area, the at least one dam includes a first dam closest to the limiting structure; a distance between the second side wall away from the edge of the substrate and the substrate is equal to a distance between the first dam away from the surface of the substrate and the substrate; preferably, the at least one dam further includes a second dam, the second dam is located on a side of the first dam close to the first display area, a height of the second dam is less than a height of the first dam.

[0009] In some possible implementations, in combination with the first aspect, the display panel further includes at least one dam, the dam is located in the first non-display area and on a side of the limiting structure close to the first display area, the at least one dam includes a first dam closest to the limiting structure; in a direction from the first display area to the first non-display area, a ratio of a width of the limiting structure to a width of the first dam is greater than or equal to 2.5:1 and less than or equal to 3.5:1; preferably, the width of the limiting structure is 3 times the width of the first dam.

[0010] In some possible implementations, in combination with the first aspect, the plurality of light emitting devices include a common layer, the common layer extends from the first display area to the first non-display area and is disconnected at the limiting structure.

[0011] With reference to the first aspect, in some possible implementation manners, the light shielding structure is parallel to the substrate away from the surface of the substrate.

[0012] With reference to the first aspect, in some possible implementation manners, the display panel further includes a pixel definition layer, a support column and a plurality of planarization layers, the pixel definition layer is located on a side of the substrate, the pixel definition layer encloses a pixel opening, at least part of the light emitting device is located in the pixel opening, the support column is located on a side of the pixel definition layer away from the substrate, and the plurality of planarization layers are stacked between the pixel definition layer and the substrate; the limiting structure includes a plurality of limiting portions stacked in a direction away from the substrate, and the limiting portions are in the same layer and of the same material as one of the pixel definition layer, the support column and the planarization layers.

[0013] The second aspect of the present application provides a spliced display screen, including: a first display panel, a display panel provided in any of the embodiments of the present application; and a second display panel having a second display area and a second non-display area surrounding the second display area; wherein part of the first non-display area and part of the second non-display area are overlapped, and the orthographic projection of at least part of the light shielding structure in the first display panel on the second display panel is located in the second non-display area.

[0014] With reference to the second aspect, in some possible implementation manners, the first non-display area is overlapped with the second non-display area on a display side of the second display panel.

[0015] With reference to the second aspect, in some possible implementation manners, the first non-display area includes a first sub-non-display area, the first sub-non-display area is located on a side of the first display area, the first sub-non-display area is overlapped with part of the second non-display area, and the light shielding structure is located in the first sub-non-display area.

[0016] With reference to the second aspect, in some possible implementation manners, no light shielding structure is arranged in the second display panel, the second display panel and the first display panel share the light shielding structure in the first display panel; or the second display panel is a display panel provided in any of the embodiments of the present application, and the orthographic projection of at least part of the light shielding structure in the second display panel on the first display panel and at least part of the light shielding structure in the first display panel are overlapped.

[0017] With reference to the second aspect, in some possible implementation manners, the spliced display screen further includes a lubricating layer, the lubricating layer is located between the first non-display area and the second non-display area; preferably, the lubricating layer includes black graphite.

[0018] In some possible implementation manners, the first display panel and the second display panel are arranged in parallel; preferably, the spliced display screen further comprises a polarizer and a first compensation structure, the polarizer is located at a display side of the first display panel and the second display panel, the polarizer, the first display panel and the second display panel enclose a first gap, and the first compensation structure fills the first gap; preferably, a material of the first compensation structure comprises optical glue; preferably, the spliced display screen further comprises a cover plate, and the cover plate is located at a side of the polarizer away from the first display panel and the second display panel.

[0019] In some possible implementation manners, a display surface of the first display area of the first display panel and a display surface of the second display area of the second display panel are coplanar; preferably, the first non-display area of the first display panel is bent at a side wall of the second display panel and connected with the first display area of the first display panel; preferably, the spliced display screen further comprises a polarizer, and the polarizer is located at a display side of the first display panel and the second display panel; preferably, the spliced display screen further comprises a first compensation structure and a second compensation structure, the polarizer, the first display panel and the second display panel enclose a first gap, the polarizer, the first display area and the first non-display area of the first display panel enclose a second gap, the first compensation structure fills the first gap, and the second compensation structure fills the second gap; or, the spliced display screen further comprises a third compensation structure, and the third compensation structure is located between the polarizer and the first display panel and between the polarizer and the second display panel; preferably, a material of at least one of the first compensation structure, the second compensation structure and the third compensation structure comprises optical glue; preferably, the spliced display screen further comprises a cover plate, and the cover plate is located at a side of the polarizer away from the first display panel and the second display panel.

[0020] In some possible implementation manners, the spliced display screen further comprises a third display panel, and the third display panel is the display panel in any one of claims 1 to 9; a part of the first non-display area of the third display panel and a part of the second non-display area of the second display panel are overlapped, and a normal projection of at least part of the light shielding structure of the third display panel on the second display panel is located in the second non-display area; preferably, the part of the first non-display area of the third display panel and the part of the first non-display area of the first display panel are overlapped with the second non-display area on the same side or on different sides of the second display panel; preferably, the first display area of the first display panel, the second display area of the second display panel and the first display area of the third display panel are linearly arranged.

[0021] In some possible implementation manners, the first display area of the third display panel, the second display panel and the first display area of the first display panel are coplanar; preferably, the spliced display screen further comprises a polaroid, and the polaroid is located at a display side of the first display panel, the second display panel and the third display panel; preferably, the spliced display screen further comprises a first compensation structure, a second compensation structure and a fourth compensation structure, the polaroid, the first display panel and the second display panel enclose a first gap, the polaroid, the first display area and the first non-display area of the first display panel enclose a second gap, the polaroid, the first display area and the first non-display area of the third display panel enclose a third gap, the first compensation structure fills the first gap, the second compensation structure fills the second gap, and the third compensation structure fills the third gap; or, the spliced display screen further comprises a third compensation structure, and the third compensation structure is located between the polaroid and the first display panel, the polaroid and the second display panel, and the polaroid and the third display panel; preferably, the fourth compensation structure comprises an optical adhesive layer.

[0022] The third aspect of the present application provides an intelligent cabin, which comprises the display panel provided in any of the embodiments of the present application or the spliced display screen provided in any of the embodiments of the present application.

[0023] The fourth aspect of the present application provides a display device, which comprises the display panel provided in any of the embodiments of the present application or the spliced display screen provided in any of the embodiments of the present application.

[0024] According to the display panel, the spliced display screen, the intelligent cabin and the display device provided in the embodiments of the present application, the shading structure and the limiting structure for limiting the shading structure are arranged in the first non-display area of the display panel, the thickness of the shading structure is ensured to meet the requirement by the limiting structure, and then the shading structure has sufficient mechanical strength, can block the outgoing light of the first non-display area, improve the contrast, weaken the color offset reflection problem and improve the display effect. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1a A composition diagram of a frame width of a display screen in the related art.

[0026] Figure 1b A composition diagram of a width of a splicing seam of a spliced display screen in the related art.

[0027] Figure 2 A top view structure schematic diagram of the display panel provided in an embodiment of the present application.

[0028] Figure 3 A top view structure schematic diagram of the display panel provided in the first embodiment of the present application. Figure 2 A cross-sectional structure schematic diagram of the display panel shown along the A1A2 line.

[0029] Figure 4Provided for the second embodiment of this application Figure 2 The diagram shows a cross-sectional view of the display panel along line A1A2.

[0030] Figure 5 Provided for the third embodiment of this application Figure 2 The diagram shows a cross-sectional view of the display panel along line A1A2.

[0031] Figure 6 Provided for the fourth embodiment of this application Figure 2 The diagram shows a cross-sectional view of the display panel along line A1A2.

[0032] Figure 7 Provided for the fifth embodiment of this application Figure 2 The diagram shows a cross-sectional view of the display panel along line A1A2.

[0033] Figure 8 Provided for the sixth embodiment of this application Figure 2 The diagram shows a cross-sectional view of the display panel along line A1A2.

[0034] Figure 9a Provided for the seventh embodiment of this application Figure 2 The diagram shows a cross-sectional view of the display panel along line A1A2.

[0035] Figure 9b for Figure 9a A schematic diagram of the structure of the light-emitting device 20 in the display panel shown.

[0036] Figure 10 Provided for the eighth embodiment of this application Figure 2 The diagram shows a cross-sectional view of the display panel along line A1A2.

[0037] Figure 11 This is a schematic diagram of the cross-sectional structure of the splicing display screen provided in the ninth embodiment of this application.

[0038] Figure 12 This is a schematic diagram of the cross-sectional structure of the splicing display screen provided in the tenth embodiment of this application.

[0039] Figure 13 This is a schematic diagram of the cross-sectional structure of the splicing display screen provided in the eleventh embodiment of this application.

[0040] Figure 14 This is a schematic diagram of the cross-sectional structure of the splicing display screen provided in the twelfth embodiment of this application.

[0041] Figure 15 This is a schematic diagram of the cross-sectional structure of the splicing display screen provided in the thirteenth embodiment of this application.

[0042] Figure 16A cross-sectional structure schematic diagram of a spliced display screen provided for the fourteenth embodiment of the present application.

[0043] Figure 17 A cross-sectional structure schematic diagram of a spliced display screen provided for the fifteenth embodiment of the present application.

[0044] Figure 18 A cross-sectional structure schematic diagram of a spliced display screen provided for the sixteenth embodiment of the present application.

[0045] Figure 19 A cross-sectional structure schematic diagram of a spliced display screen provided for the seventeenth embodiment of the present application.

[0046] Figure 20 A structure schematic diagram of a display device provided for the nineteenth embodiment of the present application. DETAILED DESCRIPTION

[0047] With the rapid development of technology, smart travel and intelligent cockpit technology are revolutionizing the automotive industry at an unprecedented pace. As the core of this field, the intelligent cockpit is committed to integrating various IT and artificial intelligence technologies, aiming to create a new integrated digital platform in the car. This platform not only provides drivers with an unprecedented intelligent experience, but also improves driving safety through advanced technology.

[0048] Currently, a large amount of research has been conducted on intelligent cockpit technology both domestically and internationally. These studies not only cover the development of basic technologies, but also involve the expansion of various application scenarios. For example, cameras are installed on the A-pillar, B-pillar, and rearview mirror of the vehicle, which are used for tasks such as emotion recognition, age detection, left-behind object detection, and seat belt detection. The implementation of these functions not only improves the intelligent level of the vehicle, but also provides drivers with a more convenient and safe driving experience.

[0049] In the design of the intelligent cockpit, safe driving is always an important prerequisite. On the basis of meeting this prerequisite, the intelligent cockpit provides drivers with an intelligent closed-loop human-vehicle interaction experience. This experience not only allows drivers to more easily control the vehicle, but also further improves driving safety through real-time information feedback and intelligent reminders.

[0050] However, with the continuous development of intelligent cockpit technology, the demand for safe display and large-area display in the vehicle is increasingly urgent. At present, although some vehicle display screen products have appeared on the market, there are still great challenges in curved radian display. Since the vehicle display screen needs to adapt to different vehicle models and interior design, its curved radian often needs to be customized according to specific needs. However, there is no good solution at present that can fully meet this demand. Therefore, most vehicle display screens currently still use 12.3-18 inch flat display solutions to meet the interactive needs. In related technologies, either a whole piece of long strip-shaped display screen is used, or a multi-piece small-area display screen splicing solution is used.

[0051] Figure 1a is a composition diagram of the frame width of the display screen in the related art. As shown in Figure 1a , the display screen includes a display panel 11, an optically clear adhesive (OCA) layer 12, a polarizing sheet 300 and a cover plate 500 which are sequentially stacked. The display panel 11 has a display area AA and a visual area VA surrounding the display area AA. The display area AA is arranged with sub-pixels, and the visual area VA is not arranged with sub-pixels. The boundary line between the display area AA and the visual area VA can be used as the edge line of the frame area of the display screen, that is, the area outside the boundary line is the frame area FA.

[0052] The OCA layer 12 is used to adhere the display panel 11 and the polarizing sheet 300. The OCA has optical transparency and is widely used in display technology. The preparation tolerance of the OCA will affect its thickness and flatness, thereby affecting the width of the display screen. The polarizing sheet 300 is used to control the direction of light and is an important component in the display screen. The preparation tolerances of the display panel 11, the optically clear adhesive (OCA) layer 12, the polarizing sheet 300 and the cover plate 500, and the tolerances in the lamination process when the display panel 11, the optically clear adhesive (OCA) layer 12, the polarizing sheet 300 and the cover plate 500 are laminated are important factors affecting the width of the frame area FA of the display screen. Among them, the lamination tolerances include lamination position accuracy, lamination pressure uniformity, lamination temperature control and other factors. These factors will affect the lamination quality between the film layer structures and the final width of the frame area FA of the display screen.

[0053] Figure 1b is a composition diagram of the width of the splicing seam of the spliced display screen in the related art. In combination with Figure 1b and Figure 1aAs shown, the spliced display screen includes two display screens which are overlapped by the respective frame areas FA. In this case, considering the preparation tolerance and the fitting tolerance of each film layer structure in a single display screen, and the fitting tolerance of the two display screens, it can be determined that the width W of the splicing joint of the spliced display screen is about 3mm.

[0054] In the intelligent cockpit, if the whole long strip-shaped display screen as shown in Figure 1a is used, there is a color deviation and reflection problem when looking at the left and right sides from the main driving position. If the spliced display screen as shown in Figure 1b is used, there is also a problem of large splicing gap in addition to the color deviation and reflection problem. It can be seen that the vehicle-mounted display screen in the related art has the problem of poor display effect.

[0055] Therefore, the display panel, the spliced display screen, the intelligent cockpit and the display device are provided. The light-shielding structure and the limiting structure for limiting the light-shielding structure are arranged in the non-display area of the display panel. The thickness of the light-shielding structure is ensured to meet the requirements by the limiting structure, so that the light-shielding structure has sufficient mechanical strength, can shield the outgoing light of the non-display area, improve the contrast, weaken the color deviation and reflection problem, and improve the display effect.

[0056] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0057] In the drawings, the sizes of the layers and regions can be exaggerated for clarity. It can be understood that when a structure is referred to as being "on" or "under" another structure, it can be directly on or under the other structure, or there can be an intermediate structure. The same reference signs always indicate the same structure. The structures mentioned herein include any of the film layers, elements, devices, members, components.

[0058] When a structure is referred to as being "connected" to another structure, it can be directly connected to the other structure, or indirectly connected to the other structure in a manner that one or more intermediate structures are placed between them.

[0059] Figure 2 The top view structural schematic diagram of the display panel provided by an embodiment of the present application is shown. Figure 3 The display panel provided by the first embodiment of the present application is shown. Figure 2 The cross-sectional structural schematic diagram of the display panel along the A1A2 line is shown. The display panel provided by the first embodiment of the present application is shown. Figure 2 The display panel provided by the second embodiment of the present application is shown. Figure 3As shown, the display panel has a first display area AA1 and a first non-display area FA1 surrounding the first display area AA1. The display panel comprises a substrate 10, a plurality of light emitting devices 20, a limiting structure 30 and a light shielding structure 40. The light emitting devices 20 are located on one side of the substrate 10 and in the first display area AA1. The limiting structure 30 is located on one side of the substrate 10 and in the first non-display area FA1, and the limiting structure 30 at least partially surrounds the first display area AA1. The light shielding structure 40 is located in the first non-display area FA1, and the edge of the light shielding structure 40 away from the first display area AA1 does not exceed the side of the limiting structure 30 away from the first display area AA1.

[0060] The first display area AA1 has a display function, the first non-display area FA1 is adjacent to the first display area AA1 and surrounds the first display area AA1, and the first non-display area FA1 does not have a display function. The plurality of light emitting devices 20 are arranged in an array in the first display area AA1, and a virtual connection line of the outer edge lines of the outermost peripheral circle of light emitting devices 20 can be used as a boundary line between the first display area AA1 and the first non-display area FA1.

[0061] The substrate 10 can be a base substrate or an array substrate. The array substrate refers to a substrate on which a circuit structure such as a pixel circuit is formed. In some embodiments, the base substrate can be a glass-based substrate. In some embodiments, the base substrate can include an organic resin material such as epoxy, triazine, silicone or polyimide. For example, the base substrate can be an FR4 type printed circuit board (PCB), or can be a flexible PCB that is easy to deform. In some embodiments, the base substrate can include a ceramic material such as silicon nitride, aluminum nitride or aluminum trioxide, or include a metal or a metal compound.

[0062] The light emitting device 20 can be an organic light emitting diode (OLED), a micro light emitting diode (Micro LED), a quantum dot light emitting diode (QLED) or the like. The light emitting device 20 can be a light emitting device of various colors, such as a red light emitting device R, a green light emitting device G, a blue light emitting device B or the like.

[0063] The limiting structure 30 is used to limit the light shielding structure 40, so that the edge of the light shielding structure 40 away from the first display area AA1 does not exceed the side of the limiting structure 30 away from the first display area AA1, in other words, the edge of the light shielding structure 40 away from the first display area AA1 does not exceed the limiting structure 30, so that the position and thickness of the light shielding structure 40 meet the requirements.

[0064] The limiting structure 30 at least partially surrounds the first display area AA1, that is, the limiting structure 30 can surround the first display area AA1 to form a ring wall structure, or the limiting structure 30 partially surrounds the first display area AA1 to form a retaining wall structure. Correspondingly, in the case of the limiting structure 30 being a ring wall structure, the light shielding structure 40 is also a ring structure and surrounds the first display area AA1, or in the case of the limiting structure 30 being a retaining wall structure, the light shielding structure 40 partially surrounds the first display area AA1, or in other words, the light shielding structure 40 is arranged along part of the edge of the first display area AA1. Exemplarily, the first non-display area FA1 includes an upper frame area, a lower frame area, a left frame area and a right frame area, and the light shielding structure 40 is located in the left frame area and / or the right frame area.

[0065] The material of the limiting structure 30 includes at least one of an organic material, an inorganic material and a metal material. Exemplarily, the limiting structure 30 includes a plurality of limiting portions stacked in a direction away from the substrate 10, and the material of the limiting portions is selected from any one of an organic material, an inorganic material and a metal material.

[0066] The light shielding structure 40 can be a light shielding layer, and the material of the light shielding layer can be black photoresist.

[0067] The display panel can further include at least one dam 50, which is located on the side of the limiting structure 30 close to the first display area AA1 and between the substrate 10 and the light shielding structure 40. Exemplarily, the at least one dam 50 includes a first dam 51 and a second dam 52, the second dam 52 surrounds the first display area AA1, and the first dam 51 is located between the limiting structure 30 and the second dam 52 and surrounds the second dam 52.

[0068] The display panel can further include at least one gate drive circuit 60, which is located on the side of the dam 50 close to the first display area AA1 and between the substrate 10 and the light shielding structure 40. Exemplarily, the at least one gate drive circuit 60 includes an emission control circuit 61, a first scan drive circuit 62 and a second scan drive circuit 63 arranged in sequence in a direction from the first non-display area FA1 to the first display area AA1.

[0069] The display panel can further include an initialization signal wire 13 located in the first non-display area FA1 and on the side of the second scan drive circuit 63 close to the first display area AA1.

[0070] According to the display panel provided in the embodiment, by arranging the light shielding structure 40 and the limiting structure 30 for limiting the light shielding structure 40 in the first non-display area FA1 of the display panel, the thickness of the light shielding structure 40 is ensured to meet the requirement by the limiting structure 30, and the light shielding structure 40 is ensured to have sufficient mechanical strength, so as to shield the outgoing light of the first non-display area FA1, improve the contrast, weaken the color offset reflection problem, and improve the display effect.

[0071] In one embodiment, as shown in Figure 3 the light shielding structure 40 is coincident with the boundary line between the first display area AA1 and the first non-display area FA1 near the edge line L of the first display area AA1. That is, the orthographic projection of the light shielding structure 40 on the substrate 10 is coincident with the boundary line between the first display area AA1 and the first non-display area FA1 near the edge line L of the first display area AA1.

[0072] In one embodiment, as shown in Figure 3 the surface of the light shielding structure 40 is parallel to the substrate 10 away from the substrate 10. The advantage is that the flatness of the display panel is improved.

[0073] Figure 4 As shown in Figure 2 the cross-sectional structure schematic diagram of the display panel along the A1A2 line. As shown in Figure 2 In the embodiment, the display panel further comprises an encapsulation structure 70, which extends from the side of the light emitting device 20 away from the substrate 10 to the first non-display area FA1. From the direction of the first display area AA1 pointing to the first non-display area FA1, the encapsulation structure 70 extends from the side of the light shielding structure 40 close to the substrate 10 to the side wall of the limiting structure 30 close to the first non-display area FA1, the side of the limiting structure 30 away from the substrate 10, and the side wall of the limiting structure 30 away from the first non-display area FA1. In the first non-display area FA1, part of the encapsulation structure 70 is located on the side of the light shielding structure 40 close to the substrate 10, and part of the encapsulation structure 70 is located on the side of the limiting structure 30 away from the substrate 10. In other words, the light shielding structure 40 and the limiting structure 30 are respectively located on the two sides of the encapsulation structure 70, that is, the light shielding structure 40 is located on the side of the encapsulation structure 70 away from the substrate 10, and the limiting structure 30 is located on the side of the encapsulation structure 70 close to the substrate 10.

[0074] The encapsulation structure 70 is used to block the invasion of water and oxygen, and provides protection for the light emitting device 20. For example, the encapsulation structure 70 comprises a first encapsulation layer 71, a second encapsulation layer 72 and a third encapsulation layer 73 which are sequentially stacked away from the substrate 10, the first encapsulation layer 71 and the third encapsulation layer 73 are inorganic layers, and the second encapsulation layer 72 is an organic layer. The edge of the second encapsulation layer 72 is cut off on the side of the dam 50 close to the first display area AA1, and the edges of the first encapsulation layer 71 and the third encapsulation layer 73 are flush with the edge of the substrate 10.

[0075] Figure 5 The display panel provided in the third embodiment of the present application is shown in FIG. 3A. The cross-sectional structure of the display panel along the A1A2 line is shown in FIG. 3B. Figure 2 The display panel provided in the third embodiment of the present application is shown in FIG. 3A. The cross-sectional structure of the display panel along the A1A2 line is shown in FIG. 3B. Figure 5 The display panel provided in the third embodiment of the present application is shown in FIG. 3A. The cross-sectional structure of the display panel along the A1A2 line is shown in FIG. 3B. Figure 4 The display panel provided in the third embodiment of the present application is shown in FIG. 3A. The cross-sectional structure of the display panel along the A1A2 line is shown in FIG. 3B. In other words, the light-shielding structure 40 and the limiting structure 30 are located on the same side of the packaging structure 70, specifically, the side of the packaging structure 70 away from the substrate 10.

[0076] Figure 6 The display panel provided in the fourth embodiment of the present application is shown in FIG. 4A. The cross-sectional structure of the display panel along the A1A2 line is shown in FIG. 4B. Figure 2 The display panel provided in the fourth embodiment of the present application is shown in FIG. 4A. The cross-sectional structure of the display panel along the A1A2 line is shown in FIG. 4B. Figure 7 The display panel provided in the fifth embodiment of the present application is shown in FIG. 5A. The cross-sectional structure of the display panel along the A1A2 line is shown in FIG. 5B. Figure 2 The display panel provided in the fifth embodiment of the present application is shown in FIG. 5A. The cross-sectional structure of the display panel along the A1A2 line is shown in FIG. 5B. Figure 6 The display panel provided in the fifth embodiment of the present application is shown in FIG. 5A. The cross-sectional structure of the display panel along the A1A2 line is shown in FIG. 5B. Figure 7 The display panel provided in the fifth embodiment of the present application is shown in FIG. 5A. The cross-sectional structure of the display panel along the A1A2 line is shown in FIG. 5B. In this case, in the direction away from the first display area AA1, the height of the limiting structure 30 shows an increasing trend, which is conducive to the flow leveling of the light-shielding material of the light-shielding structure 40, reduces the risk of air bubbles, and ensures that the flatness and appearance of the light-shielding structure 40 meet the requirements. In the manufacturing of the display panel, the flatness and accurate appearance of the light-shielding structure 40 are crucial to the contrast and other parameters of the display panel, thereby facilitating the improvement of the display effect.

[0077] In one embodiment, as shown in FIG. 3A, the first side wall C1 can also be perpendicular to the substrate 10. The advantage of this is that the space occupied by the limiting structure 30 on the surface of the substrate 10 is saved, which is conducive to the realization of narrow frame. Figure 6 In one embodiment, as shown in FIG. 3A, the first side wall C1 can also be perpendicular to the substrate 10. The advantage of this is that the space occupied by the limiting structure 30 on the surface of the substrate 10 is saved, which is conducive to the realization of narrow frame. Figure 7As shown in FIG. 6, the first side wall C1 is inclined to the direction of the first display area AA1 relative to the reference surface. The advantage is that the mechanical strength of the limiting structure 30 is improved.

[0078] In one embodiment, as shown in FIG. 6, the second side wall C2 is perpendicular to the substrate 10. The advantage is that the space occupied by the limiting structure 30 on the surface of the substrate 10 is saved, which is conducive to the realization of narrow frame. Alternatively, in other embodiments, the second side wall C2 is inclined to the direction away from the first display area AA1 relative to the reference surface. The advantage is that the mechanical strength of the limiting structure 30 is improved. Figure 6 Figure 7 As shown in FIG. 6, the second side wall C2 is perpendicular to the substrate 10. The advantage is that the space occupied by the limiting structure 30 on the surface of the substrate 10 is saved, which is conducive to the realization of narrow frame. Alternatively, in other embodiments, the second side wall C2 is inclined to the direction away from the first display area AA1 relative to the reference surface. The advantage is that the mechanical strength of the limiting structure 30 is improved.

[0079] In one embodiment, as shown in FIG. 6, the limiting structure 30 further comprises a connecting surface C3, the connecting surface C3 connects the edge of the first side wall C1 away from the edge of the substrate 10 and the edge of the second side wall C2 away from the edge of the substrate 10, and the connecting surface C3 is a plane. Since the height of the first side wall C1 is greater than the height of the second side wall C2, the connecting surface C3 is inclined relative to the substrate 10 when the connecting surface C3 is a plane. The advantage is that the structure is simple and easy to implement. Alternatively, in another embodiment, as shown in FIG. 7, the connecting surface C3 has a stepped structure. The advantage is that the contact area between the limiting structure 30 and the light shielding structure 40 is increased, the interfacial bonding force is improved, and the structural stability is improved. Figure 6 Figure 7 As shown in FIG. 6, the second side wall C2 is perpendicular to the substrate 10. The advantage is that the space occupied by the limiting structure 30 on the surface of the substrate 10 is saved, which is conducive to the realization of narrow frame. Alternatively, in other embodiments, the second side wall C2 is inclined to the direction away from the first display area AA1 relative to the reference surface. The advantage is that the mechanical strength of the limiting structure 30 is improved.

[0080] Figure 8 As shown in FIG. 6, the second side wall C2 is perpendicular to the substrate 10. The advantage is that the space occupied by the limiting structure 30 on the surface of the substrate 10 is saved, which is conducive to the realization of narrow frame. Alternatively, in other embodiments, the second side wall C2 is inclined to the direction away from the first display area AA1 relative to the reference surface. The advantage is that the mechanical strength of the limiting structure 30 is improved. Figure 2 As shown in FIG. 6, the second side wall C2 is perpendicular to the substrate 10. The advantage is that the space occupied by the limiting structure 30 on the surface of the substrate 10 is saved, which is conducive to the realization of narrow frame. Alternatively, in other embodiments, the second side wall C2 is inclined to the direction away from the first display area AA1 relative to the reference surface. The advantage is that the mechanical strength of the limiting structure 30 is improved. Figure 8 ​​The display panel shown in the figure and the display panel provided by any of the above embodiments differ in that, in the present embodiment, the display panel further comprises a plurality of support columns 80 located between adjacent light emitting devices 20, and the distance between the first side wall C1 of the limiting structure 30 and the edge of the substrate 10 and the substrate 10 is equal to the distance between the surface of the support column 80 and the substrate 10. In the above example, the distance between the first side wall C1 and the edge of the substrate 10 and the substrate 10 is denoted as a first distance D1, and the distance between the surface of the support column 80 and the substrate 10 is denoted as a third distance D3, D3=D1. It should be noted that the D3=D1 mentioned here contains a certain error range, for example, the error range is between 3-10 microns, that is, .

[0081] Since the height of the first side wall C1 determines the thickness of the light shielding structure 40, by setting D3=D1, the thickness uniformity between the first non-display area FA1 and the first display area AA1 is improved, which is beneficial to forming a surface that tends to be flat in the first non-display area FA1 and the first display area AA1, and provides convenience for the assembly of other structures (such as polarizing plates, cover plates, etc.).

[0082] In one embodiment, the display panel further comprises a pixel definition layer 90 located between the support column 80 and the substrate 10, and the pixel definition layer 90 encloses a pixel opening H1, and at least part of the light emitting device 20 is located in the pixel opening H1.

[0083] In one embodiment, as shown in Figure 8 The display panel further comprises at least one dam 50 located in the first non-display area FA1 and located on the side of the limiting structure 30 close to the first display area AA1, and the at least one dam 50 comprises a first dam 51 closest to the limiting structure 30. The distance between the second side wall C2 and the edge of the substrate 10 and the substrate 10 is equal to the distance between the surface of the first dam 51 and the substrate 10. In the above example, the distance between the second side wall C2 and the edge of the substrate 10 and the substrate 10 is denoted as a second distance D2, and the distance between the surface of the first dam 51 and the substrate 10 is denoted as a fourth distance D4, D4=D2. It should be noted that the D4=D2 mentioned here contains a certain error range, for example, the error range is between 3-10 microns, that is, Such a benefit is that it is beneficial to form the leveling of the light shielding material of the light shielding structure 40, and ensure the flatness and topography requirements of the light shielding structure 40. Since the flatness and topography of the light shielding structure 40 are crucial to the display effect such as contrast ratio, the high flatness and good topography of the light shielding structure 40 are beneficial to improve the display effect.

[0084] In one embodiment, the at least one dam 50 further comprises a second dam 52 located on the side of the first dam 51 close to the first display area AA1, and the height of the second dam 52 is less than the height of the first dam 51. In this case, in the direction from the first display area AA1 to the first non-display area FA1, the height of the second dam 52, the first dam 51 and the limiting structure 30 increases, which provides favorable conditions for the leveling of the light-shielding material forming the light-shielding structure 40, and ensures the flatness and good appearance of the light-shielding structure 40.

[0085] In one embodiment, in the direction from the first display area AA1 to the first non-display area FA1, the ratio of the width of the limiting structure 30 to the width of the first dam 51 is greater than or equal to 2.5:1 and less than or equal to 3.5:1. For example, the width of the limiting structure 30 is denoted as the first width W1, and the width of the first dam 51 is denoted as the second width W2, 2.5:1≤W1:W2≤3.5:1. For example, the width of the limiting structure 30 is 3 times the width of the first dam 51. The advantage is that this width design can ensure that the limiting structure 30 has sufficient mechanical strength, thereby providing better limiting effect for the light-shielding structure 40. At the same time, the boundary appearance of the first non-display area FA1 of the display panel can be more accurately controlled by means of the limiting structure 30.

[0086] Figure 9a For the seventh embodiment of the present application Figure 2 The cross-sectional structure of the display panel shown along the A1A2 line is shown. As Figure 9a The display panel shown and the display panel provided by any of the above embodiments are different in that in the present embodiment, the plurality of light emitting devices 20 comprise a common layer 220, the common layer 220 extends from the first display area AA1 to the first non-display area FA1, and is disconnected at the limiting structure 30.

[0087] Figure 9b For Figure 9a The structure of the light emitting device 20 in the display panel shown is shown. As Figure 9bAs shown, the light-emitting device 20 comprises, in sequence from the direction gradually far away from the substrate 10, a first electrode 21, a light-emitting structure 22 and a second electrode 23. Exemplarily, the first electrode 21 is an anode, and the second electrode 23 is a cathode. Alternatively, the first electrode 21 is a cathode, and the second electrode 23 is an anode. The light-emitting structure 22 comprises an emitting layer (EML), and can further comprise at least one of a hole injection layer (HIL) between the anode and the EML, a hole transport layer (HTL), an electron-blocking layer (EBL), and at least one of an electron injection layer (EIL) between the cathode and the EML, an electron transport layer (ETL), a hole-blocking layer (HBL). Exemplarily, one or more of the second electrode 23, the hole injection layer, the hole transport layer, the electron-blocking layer, the hole-blocking layer, the electron transport layer and the electron injection layer of all the light-emitting devices 20 can be connected together to form a common layer, and the emitting layers of the adjacent light-emitting devices 20 can have a small amount of overlap or can be isolated from each other.

[0088] In combination Figure 9a And Figure 9b As shown, the common layer 220 can be one or more of the second electrode 23, the hole injection layer, the hole transport layer, the electron-blocking layer, the hole-blocking layer, the electron transport layer and the electron injection layer. The common layer 220 is disconnected at the limiting structure 30, so as to cut off the water-oxygen invasion path. Exemplarily, the limiting structure 30 can cut off the common layer 220 by virtue of the higher height thereof, or can cut off the common layer 220 by setting an undercut structure.

[0089] In one embodiment, the distance between the first side wall C1 of the limiting structure 30 and the edge of the substrate 10 is equal to the distance between the support column 80 and the surface of the substrate 10, and the first side wall C1 is perpendicular to the substrate 10. In this case, the height of the first side wall C1 is sufficient to cut off the common layer 220.

[0090] According to the display panel provided in the embodiment, the common layer 220 is disconnected at the limiting structure 30, that is, the limiting structure 30 further functions to cut off the common layer 220, so that the limiting structure 30 can be used to replace the cutting dam for cutting off the common layer 220 in the related art, thereby achieving the technical effect of narrow frame.

[0091] Figure 10 For the eighth embodiment of the present applicationFigure 2 A cross-sectional structure schematic view of the display panel along the A1A2 line is shown. As Figure 10 The display panel shown in FIG. 1 and Figure 3 The difference between the display panel shown in FIG. 1 and the display panel shown in FIG. 2 is that, in the present embodiment, the display panel further comprises a pixel definition layer 90, a support column 80, and a plurality of planarization layers 14. The pixel definition layer 90 is located on the side of the substrate 10 away from the support column 80, and the pixel definition layer 90 encloses a pixel opening H1 in which at least part of the light-emitting device 20 is located. The plurality of planarization layers 14 are stacked between the pixel definition layer 90 and the substrate 10. The limiting structure 30 comprises a plurality of limiting portions stacked in the direction away from the substrate 10, and the limiting portions are in the same layer and of the same material as one of the pixel definition layer 90, the support column 80, and the planarization layer 14.

[0092] For example, the plurality of limiting portions 31 comprise a first limiting portion 31 and a second limiting portion 32, and the second limiting portion 32 is located on the side of the first limiting portion 31 away from the substrate 10. The first limiting portion 31 is in the same layer and of the same material as the planarization layer 14, and the second limiting portion 32 is in the same layer and of the same material as the support column 80. For example, the plurality of limiting portions 31 further comprise a third limiting portion 33, and the third limiting portion 33 is located between the first limiting portion 31 and the second limiting portion 32. The third limiting portion 33 is in the same layer and of the same material as the pixel definition layer 90.

[0093] According to the display panel provided in the present embodiment, the limiting structure 30 can be prepared synchronously with the conventional structure in the display panel, without the need to add process steps.

[0094] The present application also provides a spliced display screen, which comprises the display panel provided in any of the above embodiments. Figure 11 A cross-sectional structure schematic view of the spliced display screen provided in the ninth embodiment of the present application is shown. As Figure 11 As shown in the figure, the spliced display screen comprises a first display panel 100 and a second display panel 200. The first display panel 100 is the display panel provided in any of the above embodiments, and the second display panel 200 can be the display panel provided in any of the above embodiments or a conventional display panel. For the sake of distinction, it is defined that the second display panel 200 has a second display area AA2 and a second non-display area FA2 surrounding the second display area. In the present embodiment, part of the first non-display area FA1 and part of the second non-display area FA2 are overlapped, and the orthographic projection of at least part of the light-shielding structure 40 on the second display panel 200 is located in the second non-display area FA2.

[0095] For example, the first display panel 100 is the display panel provided in any of the above embodiments, with the limiting structure 30 surrounding the first display area AA1, and correspondingly, the light-shielding structure 40 surrounding the first display area AA1. The second display panel 200 is a conventional display panel, that is, without the limiting structure 30 and the light-shielding structure 40. Taking both the first display panel 100 and the second display panel 200 as rectangular display panels, the first non-display area FA1 of the first display panel 100 includes an upper non-display area, a lower non-display area, a left non-display area, and a right non-display area, and the second non-display area FA2 of the second display panel 200 includes an upper non-display area, a lower non-display area, a left non-display area, and a right non-display area. The upper non-display area, lower non-display area, left non-display area, and right non-display area mentioned here are all based on the user's position when using the splicing display screen, that is, when the user faces the splicing display screen, the area to the user's left is called the left non-display area, and the area to the user's right is called the right non-display area, and the same applies to the upper and lower non-display areas. The left non-display area of ​​the first display panel 100 and the right non-display area of ​​the second display panel 200 overlap to achieve splicing between the first display panel 100 and the second display panel 200. In this case, a portion of the light-shielding structure 40 in the first display panel 100 extends along the splicing seam, thereby reducing light leakage at the splicing seam of conventional splicing screens, reducing the problem of reflection at a large viewing angle at the splicing seam, and improving the display effect. At the same time, the width W of the splicing seam can be reduced; for example, the width W of the splicing seam is approximately 0.35~0.55mm.

[0096] In this embodiment, the second display panel 200 is a conventional display panel, that is, the second display panel 200 does not have a light-shielding structure 40 and a limiting structure 30. The second display panel 200 and the first display panel 100 share the light-shielding structure 40 in the first display panel 100.

[0097] In one embodiment, such as Figure 11 As shown, the first non-display area FA1 overlaps with the second non-display area FA2 on the display side of the second display panel 200. In this case, the light-shielding structure 40 in the first display panel 100 can not only block the light emitted from the first display panel 100 at a wide viewing angle, but also block the light emitted from the second display panel 200 at a wide viewing angle, thereby achieving a dual-effect technical effect.

[0098] In one embodiment, the first non-display area FA1 includes a first sub-non-display area, which is located on one side of the first display area AA1 and overlaps with a portion of the second non-display area FA2. The light-shielding structure 40 is located in the first sub-non-display area. That is, the limiting structure 30 and the light-shielding structure 40 in the first display panel 100 are only provided on the splicing side. The advantage of this is that it saves raw materials and reduces costs.

[0099] Figure 12This is a schematic cross-sectional view of the splicing display screen provided in the tenth embodiment of this application. Figure 12 The splicing display screen shown and Figure 11 The difference in the splicing display shown is that, in this embodiment, the first non-display area FA1 overlaps with the second non-display area FA2 on the non-display side of the second display panel 200. In this case, the light-shielding structure in the first display panel 100 can only block the light emitted from the first display panel 100 at a wide viewing angle, but cannot block the light emitted from the second display panel 200 at a wide viewing angle.

[0100] Figure 13 This is a schematic cross-sectional view of the splicing display screen provided in the eleventh embodiment of this application. Figure 13 The splicing display screen shown and Figure 11 , Figure 12 The difference in the splicing display shown is that, in this embodiment, the second display panel 200 is also the display panel provided in any embodiment of this application, and at least a portion of the light-shielding structure 40 in the second display panel 200 overlaps with the orthographic projection of the first display panel 100 and the at least a portion of the light-shielding structure 40 in the first display panel 100. In this case, at the splicing seam, two layers of light-shielding structures 40 perpendicular to the direction of the splicing display are formed, resulting in a better light-shielding effect.

[0101] In one embodiment, such as Figure 11 , Figure 12 and Figure 13 As shown, the first display panel 100 and the second display panel 200 are arranged in parallel. In this case, for example, the splicing display screen also includes a polarizer 300 and a first compensation structure 410. The polarizer 300 is located on the display side of the first display panel 100 and the second display panel 200. The polarizer 300, the first display panel 100 and the second display panel 200 enclose a first gap Q1, and the first compensation structure 410 fills the first gap Q1.

[0102] Specifically, the polarizer 300 has its own adhesive layer, which is used to bond and fix it to the first display panel 100 and the second display panel 200. Due to the overlapping relationship between the first display panel 100 and the second display panel 200, the polarizer 300 and the first display panel 100 are bonded face to face. However, due to the thickness of the first display panel 100, a first gap Q1 is formed between the polarizer 300 and the second display panel 200 at the overlapping position. This first gap Q1 prevents the polarizer 300 and the second display panel 200 from being tightly bonded. Therefore, a first compensation structure 410 is provided to fill this gap Q1.

[0103] For example, the material of the first compensation structure 410 includes optical adhesive.

[0104] According to the spliced display screen provided in the embodiment, the first gap Q1 is filled by the first compensation structure 410, that is, the compensation structure is arranged only at the lapping position, that is, local compensation is performed. The advantage is that the cost is low, the process complexity is low, and the spliced display screen is suitable for small-scale production or product rapid iteration.

[0105] It should be noted that the local compensation scheme is particularly suitable for scenarios in which the height difference of the lapping position is small and the visual consistency of the display area and the non-display area is not high.

[0106] In one embodiment, the spliced display screen further includes a cover plate 500 located on the side of the polarizer 300 away from the first display panel 100 and the second display panel 200.

[0107] In one embodiment, the spliced display screen further includes a first support protection film (Bottom Plate film, BPF) 810 and a second support protection film 820, the first support protection film 810 is located on the non-display side of the first display panel 100, and the second support protection film 820 is located on the non-display side of the second display panel 200.

[0108] Figure 14 A cross-sectional structure schematic diagram of the spliced display screen provided in the twelfth embodiment of the present application is shown in FIG. 12. Figure 14 The difference between the spliced display screen shown in FIG. 12 and the spliced display screen shown in FIG. 11 is that, in the present embodiment, the display surface of the first display area AA1 of the first display panel 100 and the display surface of the second display area AA2 of the second display panel 200 are coplanar. Figure 11 、 Figure 12 、 Figure 13 Thus, by arranging the display surface of the first display area AA1 of the first display panel 100 and the display surface of the second display area AA2 of the second display panel 200 to be coplanar, the flatness of the entire display surface of the spliced display screen can be improved, thereby improving the display effect.

[0109] For example, the first non-display area FA1 of the first display panel 100 is bent at the side wall of the second display panel 200 and connected with the first display area AA1 of the first display panel 100. Specifically, the first non-display area FA1 of the first display panel 100 includes a first portion 111 and a second portion 112 arranged in connection with each other, the first portion 111 is lapped with the second display panel 200, the second portion 112 extends in a bent state along the side wall of the second display panel 200, at least part of the second portion 112 is attached to the side wall of the second display panel 200, and the second portion 112 connects the first portion 111 and the display area AA1.

[0110] In one embodiment, the splicing display screen further includes a polarizer 300, which is located on the display side of the first display panel 100 and the second display panel 200.

[0111] In one embodiment, the splicing display screen further includes a first compensation structure 410 and a second compensation structure 420. The polarizer 300, the first display panel 100 and the second display panel 200 enclose a first gap Q1. The polarizer 300, the first display area AA1 and the first non-display area FA1 of the first display panel 100 enclose a second gap Q2. The first compensation structure 410 fills the first gap Q1 and the second compensation structure 420 fills the second gap Q2.

[0112] Specifically, when the first display area AA1 of the first display panel 100 and the second display panel 200 are coplanar, the first non-display area FA1 of the first display panel 100 is bent from the display side of the second display panel 200, so that the first display area AA1 of the first display panel 100 and the second display panel 200 are coplanar. In this case, the polarizer 300 and the first display panel 100 at the overlapping position are tightly fitted, and gaps are formed on both sides of the overlapping position, namely the first gap Q1 and the second gap Q2. Therefore, a first compensation structure 410 is provided to fill the first gap Q1, and a second compensation structure 420 is provided to fill the second gap Q2. The material of at least one of the first compensation structure 410 and the second compensation structure 420 includes optical adhesive.

[0113] According to the splicing display screen provided in this embodiment, compensation structures are only provided on both sides of the overlapping position, namely the first compensation structure 410 and the second compensation structure 420. The advantages are low cost, low process complexity, and suitability for small-scale production or rapid product iteration.

[0114] Figure 15 This is a schematic cross-sectional view of the splicing display screen provided in the thirteenth embodiment of this application. Figure 15 The splicing display screen shown and Figure 14 The difference in the splicing display screen shown is that, in this embodiment, the splicing display screen also includes a third compensation structure 430, which is located between the polarizer 300 and the first display panel 100, the polarizer 300 and the second display panel 200. The third compensation structure 430 is a complete film layer, and the thickness difference of the third compensation structure 430 is used to compensate for the gaps formed by overlapping.

[0115] In one embodiment, the material of the third compensation structure 430 includes an optical adhesive layer.

[0116] According to the spliced display screen provided in the embodiment, the whole compensation structure, i.e., the third compensation structure 430, is arranged on the display side of the first display panel 100 and the second display panel 200, so that the global compensation effect is achieved. The advantage is that, on the one hand, there is no obvious boundary between the display area and the non-display area on the display side, and the visual effect is better; on the other hand, the third compensation structure 430 has higher uniformity, stress dispersion, and higher long-term reliability.

[0117] It should be noted that the global compensation scheme is particularly suitable for high-end products or scenes with high requirements for display effects.

[0118] Figure 16 A cross-sectional structure schematic diagram of the spliced display screen provided in the fourteenth embodiment of the present application is shown in FIG. 13. The spliced display screen shown in FIG. 13 and the spliced display screen shown in any one of the embodiments of the thirteenth embodiment of the present application are different in that, in the present embodiment, the spliced display screen further comprises a lubricating layer 600, and the lubricating layer 600 is located between the first non-display area and the second non-display area, that is, the lubricating layer 600 is arranged between the first display panel 100 and the second display panel 200 at the lapping position. Figure 14 Figure 11- Figure 13

[0119] The lubricating layer 600 can effectively resist the friction between the display panels spliced with each other in a dynamic process, protect the circuit structure in the non-display area from being damaged, and prolong the service life of the spliced screen body. For example, the lubricating layer 600 is particularly suitable for dynamic scenes such as folding, sliding, and curling. The lubricating layer 600 has certain elasticity and adaptability, can maintain good performance in different dynamic states, and ensures the stability and reliability of the spliced screen body in the dynamic use process.

[0120] The friction coefficient between the lubricating layer 600 and the film layer in contact with the lubricating layer 600 is less than the friction coefficient between the two film layers in contact with each other. For example, in the spliced display screen, the first display panel 100, the lubricating layer 600, and the second display panel 200 are stacked in sequence. In this case, the friction coefficient between the first display panel 100 and the second display panel 200 is greater than the friction coefficient between the lubricating layer 600 and the first display panel 100 and the friction coefficient between the lubricating layer 600 and the second display panel 200. For another example, in the spliced display screen, the first display panel 100, the first support protective film 810, the lubricating layer 600, and the second display panel 200 are stacked in sequence. In this case, the friction coefficient between the lubricating layer 600 and the first support protective film 810 and the friction coefficient between the lubricating layer 600 and the second display panel 200 are both less than the friction coefficient between the first support protective film 810 and the second display panel 200.

[0121] The lubricating layer 600 can be selected from dark lubricating materials. In one embodiment, the lubricating layer 600 comprises black graphite.

[0122] ​​Figure 17 FIG. 15 shows a cross-sectional structure of a tiled display screen according to an embodiment of the present application. The tiled display screen shown in FIG. 15 is different from the tiled display screen according to any of the above embodiments in that the tiled display screen further includes a third display panel 700. The third display panel 700 is the display panel according to any of the above embodiments. A part of the first non-display area FA1 of the third display panel 700 and a part of the second non-display area FA2 of the second display panel 200 are overlapped, and a normal projection of at least part of the light shielding structure 40 of the third display panel 700 on the second display panel 200 is located in the second non-display area FA2. In this way, the tiled display screen including at least three display panels is achieved. Figure 17

[0123] In one embodiment, a part of the first non-display area FA1 of the third display panel 700 and a part of the first non-display area FA1 of the first display panel 100 are overlapped on the same side of the second display panel 200 as the second non-display area FA2, i.e., the display panels on both sides are overlapped on the same side of the middle display panel. For example, a part of the first non-display area FA1 of the third display panel 700 and a part of the first non-display area FA1 of the first display panel 100 are overlapped on the display side of the second display panel 200 as the second non-display area FA2, or a part of the first non-display area FA1 of the third display panel 700 and a part of the first non-display area FA1 of the first display panel 100 are overlapped on the non-display side of the second display panel 200 as the second non-display area FA2. The advantage is that the overall flatness of the tiled display screen is better.

[0124] In one embodiment, the first display area AA1 of the first display panel 100, the second display area AA2 of the second display panel 200, and the first display area AA1 of the third display panel 700 are linearly arranged.

[0125] In one embodiment, the first display area AA1 of the third display panel 700, the second display area AA2 of the second display panel 200, and the first display area AA1 of the first display panel 100 are coplanar.

[0126] In one embodiment, the tiled display screen further includes a polarizer 300 and a cover plate 500. The polarizer 300 is located on the display side of the first display panel 100, the second display panel 200, and the third display panel 700, and the cover plate 500 is located on the side of the polarizer 300 away from the first display panel 100, the second display panel 200, and the third display panel 700.

[0127] ​In one embodiment, the splicing display screen further includes a first compensation structure 410, a second compensation structure 420, and a fourth compensation structure 440. A polarizer 300, a first display panel 100, and a second display panel 200 enclose a first gap Q1. The polarizer 300, a first display area AA1, and a first non-display area FA1 of the first display panel 100 enclose a second gap Q2. The polarizer 300, a first display area AA1, and a first non-display area FA1 of the third display panel 700 enclose a third gap Q3. The first compensation structure 410 fills the first gap Q1, the second compensation structure 420 fills the second gap Q2, and the third compensation structure 430 fills the third gap Q3. Exemplarily, at least one of the first compensation structure 410, the second compensation structure 420, and the fourth compensation structure 440 is made of optical adhesive.

[0128] In one embodiment, the splicing display screen further includes a first bottom plate film (BPF) 810, a second bottom plate film 820, and a third bottom plate film 830. The first bottom plate film 810 is located on the non-display side of the first display panel 100, the second bottom plate film 820 is located on the non-display side of the second display panel 200, and the third bottom plate film 830 is located on the non-display side of the third display panel 700.

[0129] Figure 18 This is a schematic cross-sectional view of the splicing display screen provided in the sixteenth embodiment of this application. Figure 18 The splicing display screen shown and Figure 17 The difference in the splicing display screen shown is that, in this embodiment, the splicing display screen also includes a third compensation structure 430, which is located between the polarizer 300 and the first display panel 100, the polarizer 300 and the second display panel 200, and the polarizer 300 and the third display panel 700.

[0130] According to the splicing display screen provided in this embodiment, a full-layer compensation structure, namely the third compensation structure 430, is set on the display side of the first display panel 100, the second display panel 200, and the third display panel 700, achieving a global compensation effect. The advantages are twofold: firstly, on the display side, there is no obvious boundary between the display area and the non-display area, resulting in a better visual effect; secondly, the third compensation structure 430 has higher uniformity of distribution, disperses stress, and has higher long-term reliability.

[0131] Figure 19 This is a schematic cross-sectional view of the splicing display screen provided in the seventeenth embodiment of this application. Figure 19 The splicing display screen shown and Figure 17 , Figure 18The difference in the splicing display shown is that, in this embodiment, a portion of the first non-display area FA1 of the third display panel 700 and a portion of the first non-display area FA1 of the first display panel 100 overlap with the second non-display area FA2 on the opposite side of the second display panel 200.

[0132] Specifically, a portion of the first non-display area FA1 of the third display panel 700 overlaps with the second non-display area FA2 on the non-display side of the second display panel 200, and a portion of the first non-display area FA1 of the first display panel 100 overlaps with the second non-display area FA2 on the display side of the second display panel 200.

[0133] In one embodiment, the splicing display screen further includes a polarizer 300 and a cover plate 500. The polarizer 300 is located on the display side of the first display panel 100, the second display panel 200 and the third display panel 700, and the cover plate 500 is located on the side of the polarizer 300 away from the first display panel 100, the second display panel 200 and the third display panel 700.

[0134] In one embodiment, the video wall further includes a fifth compensation structure 450 located between the polarizer 300 and the second display panel 200, and between the polarizer 300 and the third display panel 700. Exemplarily, the material of the fifth compensation structure 450 includes an optical adhesive layer.

[0135] This application also provides a smart cockpit, including a display panel provided in any embodiment of this application, or a splicing display screen provided in any embodiment of this application.

[0136] This application also provides a display device. Figure 20 This is a schematic diagram of the structure of the display device provided in the eighteenth embodiment of this application. Figure 20 As shown, the display device 1000 includes a display panel provided in any embodiment of this application, or a splicing display screen provided in any embodiment of this application.

[0137] Display device 1000 is a product with image display function. For example, display device 1000 can be used to display static images, such as pictures or photographs. Display device 1000 can also be used to display moving images, such as videos.

[0138] Display device 1000 can be a laptop, mobile phone, handheld or portable computer, camera, camcorder, in-vehicle smart central control screen, calculator, smartwatch, GPS navigator, electronic photo, electronic billboard or sign, projector, etc.

[0139] In addition, the display device 1000 can also have the functions of photographing, video recording, fingerprint recognition, face recognition, etc. Correspondingly, the display device 1000 also includes at least one functional module for realizing the above functions, such as an under-screen camera, an under-screen fingerprint recognition sensor, etc.

[0140] The above describes the basic principles of the present application in combination with specific embodiments, but it should be pointed out that the advantages, advantages, effects, etc. mentioned in the present application are only examples and are not limiting, and these advantages, advantages, effects, etc. cannot be considered as the must-have of each embodiment of the present application. In addition, the above disclosed specific details are only for the purpose of example and for the purpose of understanding, and are not limiting, and the above details do not limit the present application to must use the above specific details to realize.

[0141] The above description has been given for the purpose of illustration and description. Furthermore, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although a number of example aspects and embodiments have been discussed above, a person skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A display panel, characterized by, The display panel has a first display area and a first non-display area surrounding the first display area, and comprises: a substrate; a plurality of light emitting devices located on one side of the substrate and in the first display area; a limiting structure located on one side of the substrate and in the first non-display area, the limiting structure at least partially surrounding the first display area; and a light shielding structure located in the first non-display area, an edge of the light shielding structure away from the first display area not exceeding the limiting structure away from the first display area.

2. The display panel of claim 1, wherein, Further comprising a packaging structure extending from the light emitting devices away from the substrate to the first non-display area; in the first non-display area, part of the packaging structure is located on the side of the light shielding structure close to the substrate, and part of the packaging structure is located on the side of the limiting structure away from or close to the substrate; Preferably, in a direction from the first display area to the first non-display area, the packaging structure extends from the side of the light shielding structure close to the substrate to the side of the limiting structure close to the substrate; or, the packaging structure extends from the side of the light shielding structure close to the substrate to the side of the limiting structure close to the first non-display area, the side of the limiting structure away from the substrate, and the side of the limiting structure away from the first non-display area.

3. The display panel of claim 1, wherein, The limiting structure comprises a first side wall away from the first display area and a second side wall close to the first display area, the distance between the first side wall away from the substrate and the substrate being greater than the distance between the second side wall away from the substrate and the substrate; Preferably, the first side wall is perpendicular to the substrate; or, the orthogonal projection of the edge of the first side wall away from the substrate on the substrate is located on the side of the orthogonal projection of the edge of the first side wall close to the substrate on the substrate close to the first display area; Preferably, the second side wall is perpendicular to the substrate; or, the orthogonal projection of the edge of the second side wall away from the substrate on the substrate is located on the side of the orthogonal projection of the edge of the second side wall close to the substrate on the substrate away from the first display area; Preferably, the limiting structure further comprises a connecting surface connecting the edge of the first side wall away from the substrate and the edge of the second side wall away from the substrate, the connecting surface being a plane or having a stepped structure.

4. The display panel of claim 3, wherein, Further comprising a plurality of support columns located between adjacent light emitting devices, the distance between the edge of the first side wall of the limiting structure away from the substrate and the substrate being equal to the distance between the surface of the support column away from the substrate and the substrate; Preferably, the display panel further comprises a pixel definition layer located between the support column and the substrate, the pixel definition layer enclosing a pixel opening, at least part of the light emitting device being located in the pixel opening.

5. The display panel of claim 3, wherein, Further comprising at least one dam, the dam being located in the first non-display area and being located at a side of the limiting structure close to the first display area, the at least one dam comprising a first dam closest to the limiting structure; a distance between the second side wall away from the edge of the substrate and the substrate is equal to a distance between the first dam away from the surface of the substrate and the substrate; Preferably, the at least one dam further comprises a second dam, the second dam being located at a side of the first dam close to the first display area, a height of the second dam being less than a height of the first dam.

6. The display panel of claim 1, wherein, Further comprising at least one dam, the dam being located in the first non-display area and being located at a side of the limiting structure close to the first display area, the at least one dam comprising a first dam closest to the limiting structure; in a direction from the first display area to the first non-display area, a ratio of a width of the limiting structure to a width of the first dam is greater than or equal to 2.5:1 and less than or equal to 3.5:1; Preferably, the width of the limiting structure is 3 times the width of the first dam.

7. The display panel of claim 1, wherein, The plurality of light emitting devices comprises a common layer, the common layer extending from the first display area to the first non-display area and being disconnected at the limiting structure.

8. The display panel of claim 1, wherein, The light shielding structure coincides with a boundary line between the first display area and the first non-display area at an edge line of the first display area close to the first display area; Preferably, the light shielding structure is parallel to the substrate away from the surface of the substrate.

9. The display panel of claim 1, wherein, Further comprising a pixel definition layer, a support column and a plurality of planarization layers, the pixel definition layer being located at a side of the substrate, the pixel definition layer enclosing a pixel opening, at least part of the light emitting device being located in the pixel opening, the support column being located at a side of the pixel definition layer away from the substrate, the plurality of planarization layers being stacked between the pixel definition layer and the substrate; the limiting structure comprises a plurality of limiting portions stacked in a direction away from the substrate, the limiting portion and one of the pixel definition layer, the support column and the planarization layer are in the same layer and have the same material.

10. A tiled display screen, characterized by Comprise: A first display panel, the display panel being described in any one of claims 1-9; And A second display panel having a second display area and a second non-display area surrounding the second display area; Part of the first non-display area and part of the second non-display area are overlapped, and a normal projection of at least part of the light shielding structure in the first display panel on the second display panel is located in the second non-display area.

11. The tiled display screen of claim 10, wherein, The first non-display area is overlapped with the second non-display area on a display side of the second display panel.

12. The tiled display screen of claim 10, wherein, The first non-display area comprises a first sub-non-display area, the first sub-non-display area being located at a side of the first display area, the first sub-non-display area being overlapped with part of the second non-display area, and the light shielding structure being located in the first sub-non-display area.

13. The tiled display screen of claim 10, wherein, The second display panel is not provided with the light shielding structure and the limiting structure, and the second display panel and the first display panel share the light shielding structure in the first display panel; or, The second display panel is the display panel of any one of claims 1-9, and a normal projection of at least part of the light-shielding structures in the second display panel on the first display panel overlaps with at least part of the light-shielding structures in the first display panel.

14. The tiled display screen of claim 10, wherein, The spliced display screen further comprises a lubricating layer between the first non-display area and the second non-display area. Preferably, the lubricating layer comprises black graphite.

15. The tiled display screen of claim 10, wherein, The first display panel and the second display panel are arranged in parallel. Preferably, the spliced display screen further comprises a polarizer and a first compensation structure, the polarizer is located on a display side of the first display panel and the second display panel, the polarizer, the first display panel and the second display panel enclose a first gap, and the first compensation structure fills the first gap. Preferably, a material of the first compensation structure comprises optical glue. Preferably, the spliced display screen further comprises a cover plate, and the cover plate is located on a side of the polarizer away from the first display panel and the second display panel.

16. The tiled display screen of claim 10, wherein, A display surface of the first display area of the first display panel and a display surface of the second display area of the second display panel are coplanar. Preferably, the first non-display area of the first display panel is bent at a side wall of the second display panel and connected with the first display area of the first display panel. Preferably, the spliced display screen further comprises a polarizer, and the polarizer is located on a display side of the first display panel and the second display panel. Preferably, the spliced display screen further comprises a first compensation structure and a second compensation structure, the polarizer, the first display panel and the second display panel enclose a first gap, the polarizer, the first display area and the first non-display area of the first display panel enclose a second gap, the first compensation structure fills the first gap, and the second compensation structure fills the second gap; or, The spliced display screen further comprises a third compensation structure, and the third compensation structure is located between the polarizer and the first display panel and between the polarizer and the second display panel. Preferably, a material of at least one of the first compensation structure, the second compensation structure and the third compensation structure comprises optical glue. Preferably, the spliced display screen further comprises a cover plate, and the cover plate is located on a side of the polarizer away from the first display panel and the second display panel.

17. The tiled display screen of claim 16, wherein, The spliced display screen further comprises a third display panel, and the third display panel is the display panel of any one of claims 1-9; part of the first non-display area of the third display panel and part of the second non-display area of the second display panel are overlapped, and a normal projection of at least part of the light-shielding structures in the third display panel on the second display panel is located in the second non-display area. Preferably, part of the first non-display area of the third display panel and part of the first non-display area of the first display panel are overlapped with the second non-display area on the same side or different sides of the second display panel. Preferably, the first display area of the first display panel, the second display area of the second display panel, and the first display area of the third display panel are linearly arranged.

18. The tiled display screen of claim 17, wherein, The first display area of the third display panel, the second display panel, and the first display area of the first display panel are coplanar. Preferably, the spliced display screen further comprises a polaroid, and the polaroid is located on a display side of the first display panel, the second display panel, and the third display panel. Preferably, the spliced display screen further comprises a first compensation structure, a second compensation structure, and a fourth compensation structure, the polaroid, the first display panel, and the second display panel enclose a first gap, the polaroid, the first display area of the first display panel, and the first non-display area enclose a second gap, the polaroid, the first display area of the third display panel, and the first non-display area enclose a third gap, the first compensation structure fills the first gap, the second compensation structure fills the second gap, and the third compensation structure fills the third gap; or, The spliced display screen further comprises a third compensation structure, and the third compensation structure is located between the polaroid and the first display panel, the polaroid and the second display panel, and the polaroid and the third display panel. Preferably, the fourth compensation structure comprises an optical adhesive layer.

19. An intelligent cabin, characterized in that, The display panel of any one of claims 1-9, or the spliced display screen of any one of claims 10-18.

20. A display device comprising: The display panel of any one of claims 1-9, or the spliced display screen of any one of claims 10-18. The display panel of any one of claims 1-9, or the spliced display screen of any one of claims 10-18.

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