Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device. The display panel comprises a substrate and a plurality of light-emitting devices located on one side of the substrate. The touch layer is positioned on one side, far away from the substrate, of the light-emitting device; the touch layer comprises touch lines, and orthographic projections of the touch lines on the plane where the light-emitting devices are located are located between the adjacent light-emitting devices. The refraction layer is located on the side, away from the substrate, of the touch layer; the refraction layer comprises a first branch part, a second branch part and a hollow part between the first branch part and the second branch part; in the direction perpendicular to the plane where the substrate is located, the first subsection is overlapped with the light-emitting device, and the second subsection is overlapped with the touch line; the orthographic projection of the hollow in the plane where the light-emitting device is located surrounds the light-emitting device; the surface of one side, far away from the substrate, of the second branch is sunken towards the direction close to the substrate to form the groove. According to the invention, the water drop angle of the refraction layer can be effectively reduced, film layer wrinkles caused by overlarge local stress in the module manufacturing process are avoided, and the product yield is improved.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] OLED (Organic Light-Emitting Diode) has self-luminous properties. OLED display panels do not require a backlight source and are thinner and lighter than LCD panels. OLED display panels also offer advantages such as high brightness, low power consumption, fast response, high clarity, good flexibility, and high luminous efficiency, meeting consumers' new demands for display technology. OLED display panels include multiple film layers with different refractive indices, causing some of the light emitted by the light-emitting device to be reflected and refracted in various ways, affecting the brightness of the light. In existing technologies, a light extraction structure is provided above the light-emitting device to improve its light extraction efficiency. However, the current patterned refractive layer suffers from large water droplet angles and film wrinkles in the module section, affecting product yield. Summary of the Invention

[0003] Embodiments of the present invention provide a display panel and a display device to solve the technical problems of reducing the water drop angle of the refractive layer in the module section and improving the wrinkles of the refractive layer.

[0004] In a first aspect, an embodiment of the present invention provides a display panel, including: A substrate and a plurality of light-emitting devices located on one side of the substrate; A touch layer is located on a side of the light-emitting device away from the substrate; the touch layer includes touch lines, and the orthographic projections of the touch lines on the plane where the light-emitting devices are located are located between adjacent light-emitting devices; a refractive layer located on a side of the touch layer away from the substrate; the refractive layer includes a first subsection, a second subsection, and a hollow portion between the first subsection and the second subsection; in a direction perpendicular to the plane of the substrate, the first subsection overlaps the light-emitting device, and the second subsection overlaps the touch line; an orthographic projection of the hollow portion on the plane of the light-emitting device surrounds the light-emitting device; The second section has a groove, and a surface of the second section away from the substrate is recessed toward the substrate to form the groove.

[0005] In a second aspect, based on the same inventive concept, an embodiment of the present invention provides a display device, comprising the display panel provided by any embodiment of the present invention.

[0006] The display panel and display device provided by embodiments of the present invention have the following beneficial effects: the refractive layer located above the light-emitting device in the display panel is a patterned film layer, with a first portion of the refractive layer overlapping the light-emitting device and a second portion overlapping the touch line. Grooves are formed in the second portion. The grooves increase the surface area of ​​the refractive layer away from the substrate, increasing the contact area between the surface of the refractive layer away from the substrate and the droplet, effectively reducing the droplet angle and thereby increasing the adhesion between the refractive layer and the film layer above it. Furthermore, the grooves in the second portion provide space for stress relief during module operation, preventing wrinkles in the refractive layer pattern caused by localized excessive stress during module manufacturing, thereby improving product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative labor.

[0008] Figure 1 This is a cross-sectional schematic diagram of a display panel in the related art; Figure 2 A schematic diagram of a display panel provided by an embodiment of the present invention; Figure 3 for Figure 2 Enlarged view of the middle area Q1; Figure 4 for Figure 3 A schematic cross-sectional view at the midline AA′; Figure 5 for Figure 3 Another cross-sectional view at the midline AA′; Figure 6 A partial schematic diagram of another display panel provided by an embodiment of the present invention; Figure 7 A schematic diagram of a groove manufacturing principle in a display panel provided by an embodiment of the present invention; Figure 8 A partial schematic diagram of another display panel provided by an embodiment of the present invention; Figure 9 A partial schematic diagram of another display panel provided by an embodiment of the present invention; Figure 10 A partial schematic diagram of another display panel provided by an embodiment of the present invention; Figure 11 A partial schematic diagram of another display panel provided by an embodiment of the present invention; Figure 12A partial schematic diagram of another display panel provided by an embodiment of the present invention; Figure 13 A partial schematic diagram of another display panel provided by an embodiment of the present invention; Figure 14 A schematic diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0009] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0010] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "an", "the" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

[0011] It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the present invention. Therefore, the present invention is intended to cover modifications and variations of the present invention that fall within the scope of the corresponding claims (technical solutions claimed for protection) and their equivalents. It should be noted that the embodiments provided in the examples of the present invention may be combined with each other unless there is any inconsistency.

[0012] Figure 1 FIG. 1 is a cross-sectional diagram of a display panel in the related art. Figure 1 As shown, the display panel includes a substrate 00, and light-emitting devices 01, touch lines 02, a first refractive layer 03, and a second refractive layer 04 located on one side of the substrate 00. Touch lines 02 are routed between adjacent light-emitting devices 01. The first refractive layer 03 is a patterned film layer. The first refractive layer 03 and the second refractive layer 04 overlying it cooperate to refract the wide-angle light emitted by the light-emitting devices 01, thereby improving the light extraction efficiency of the light-emitting devices 01.

[0013] During the module manufacturing process, the aforementioned display panel experienced issues with the first refractive layer 03's water drop angle exceeding specifications and wrinkling of the first refractive layer 03's pattern, impacting product yield. The inventors analyzed the causes of these technical issues and discovered that the first refractive layer 03 is currently a patterned film layer. This reduced the contact area between the water droplet and the first refractive layer 03 during the water drop angle test, causing the water drop angle to increase beyond design specifications. Furthermore, after the patterning process for the first refractive layer 03, a protective film must be attached to the first refractive layer 03. A suction nozzle is then attached to one side of the protective film to transfer the module. Because air is trapped between the protective film and the hollowed-out area of ​​the first refractive layer 03, the module is subjected to uneven force during suction. The air within the hollowed-out area compresses the pattern of the first refractive layer 03, causing wrinkles in the film.

[0014] In order to solve the problems existing in the related art, an embodiment of the present invention provides a display panel, which improves the morphology of the refractive layer above the light-emitting device, and sets grooves in the refractive layer in the area that does not overlap with the light-emitting device. The grooves are used to increase the surface area of ​​the refractive layer and reduce the water drop angle. The grooves can also be used to release stress, avoiding local excessive stress in the module manufacturing process that causes film wrinkles, thereby improving product yield.

[0015] Figure 2 A schematic diagram of a display panel provided by an embodiment of the present invention is shown. Figure 3 for Figure 2 Enlarged view of the Q1 position in the middle area, Figure 4 for Figure 3 A schematic cross-sectional view at the midline AA′.

[0016] Combine Figure 2 and Figure 3 As shown, the display panel includes a display area AA, the display area AA includes a plurality of light emitting devices 10, and the light emitting devices 10 include a red light emitting device 10R, a green light emitting device 10G, and a blue light emitting device 10B. Figure 3 The arrangement and shape of the light emitting device 10 are merely schematically shown and are not intended to limit the present invention. Figure 3 Only the arrangement of the light emitting devices 10 and the touch lines 21 routed between adjacent light emitting devices 10 are shown. It can be seen that the touch lines 21 are cross-connected to form a grid-like wiring.

[0017] like Figure 4As shown, the display panel includes a substrate 00, with multiple light-emitting devices 10 located on one side of the substrate 00. A touch layer 20 is located on the side of the light-emitting devices 10 facing away from the substrate 00. The light-emitting devices 10 include a stacked first electrode, a light-emitting layer, and a second electrode. The light-emitting layer is made of an inorganic or organic light-emitting material. Optionally, the display panel also includes an encapsulation layer 42, located on the side of the light-emitting devices 10 facing away from the substrate 00. The encapsulation layer 42 is used to protect the light-emitting devices 10 from corrosion by water and oxygen, thereby extending the life of the light-emitting devices 10.

[0018] The touch layer 20 includes a touch line 21. The orthographic projection of the touch line 21 on the plane where the light emitting device 10 is located is located between adjacent light emitting devices 10. In order to illustrate the positional relationship between the touch line 21 and the light emitting device 10, the present invention defines the plane where the light emitting device 10 is located. In fact, the light emitting device 10 has a certain thickness in the direction e perpendicular to the plane where the substrate 00 is located. The light emitting device 10 is not a two-dimensional structure with no thickness. Here, the plane where the light emitting device 10 is located can be understood as the film layer where the light emitting device 10 is located. The position of the touch line 21 can also be understood from another perspective, such as Figure 4 As shown, the display panel further includes a pixel definition layer 41, the pixel definition layer 41 has an opening, and the light emitting device 10 is located in the opening of the pixel definition layer 41. In a direction e perpendicular to the plane where the substrate 00 is located, the touch line 21 overlaps the pixel definition layer 41. That is, from Figure 3 From a top view, the touch lines 21 run between adjacent light-emitting devices 10. The touch lines 21 extend in intersecting directions to form a grid-like pattern as touch electrodes. Multiple touch electrodes are provided in the display area AA, and the multiple touch electrodes cooperate to realize the touch function of the display panel.

[0019] The display panel further includes a refractive layer 30, which is located on the side of the touch layer 20 away from the substrate 00; the refractive layer 30 includes a first subsection 31, a second subsection 32, and a hollow K between the first subsection 31 and the second subsection 32; along a direction e perpendicular to the plane of the substrate 00, the first subsection 31 overlaps with the light emitting device 10, and the second subsection 32 overlaps with the touch line 21. Figure 3 It can be seen that the orthographic projection of the hollow K on the plane where the light-emitting device 10 is located surrounds the light-emitting device 10. The optical auxiliary layer 43 is located on the side of the refractive layer 30 away from the substrate 00. The optical auxiliary layer 43 cooperates with the refractive layer 30 to refract the large-angle light emitted by the light-emitting device 10, thereby improving the light extraction efficiency of the light-emitting device 10. The second subsection 32 has a groove 33. The surface of the second subsection 32 on the side away from the substrate 00 is recessed toward the substrate 00 to form the groove 33. It can be understood that in the direction e perpendicular to the plane of the substrate 00, the groove 33 does not penetrate the second subsection 32. Figure 3 The shape and number of the middle grooves 33 are only schematically shown.

[0020] In the display panel provided by the embodiment of the present invention, the refractive layer 30 located above the light-emitting device 10 is a patterned film layer. The first portion 31 of the refractive layer 30 overlaps the light-emitting device 10, and the second portion 32 overlaps the touch line 21 between adjacent light-emitting devices 10. Grooves 33 formed in the second portion 32 can increase the surface area of ​​the refractive layer 30 on the side away from the substrate 00. According to the Cassie-Baxter formula: cosθc = fcosθ -1+ f , θc is the apparent contact angle (i.e. water drop angle) ，f is the solid phase fraction on the surface (indicating the area ratio of the droplet in contact with the solid surface), θ is the inherent contact angle of the solid inclusion material. It can be seen that the surface area of ​​the refractive layer 30 away from the substrate 00 increases, and the contact area between the droplet and the refractive layer 30 increases during the test. f Increase, cosθc Increase, the corresponding water drop angle θc The grooves 33 formed in the second section 32 increase the surface area of ​​the refractive layer 30 away from the substrate 00, thereby increasing the contact area between the surface of the refractive layer 30 away from the substrate 00 and the liquid droplet, effectively reducing the droplet angle and thereby increasing the adhesion between the refractive layer 30 and the film layer above it. Furthermore, the grooves 33 in the second section 32 provide space for stress relief during module operation, preventing wrinkles in the refractive layer 30 caused by excessive local stress during the module manufacturing process, thereby improving product yield.

[0021] In some embodiments, Figure 5 for Figure 3 Another cross-sectional view at the midline AA′. Figure 5 As shown, the display panel includes a polarizer 50, which is located on the side of the refractive layer 30 away from the substrate 00; the polarizer 50 includes an adhesive layer 51, which fills the hollow K and the groove 33. The adhesive layer 51 is reused as an optical auxiliary layer 43. The adhesive layer 51 cooperates with the refractive layer 30 to refract the large-angle light emitted by the light-emitting device 10, thereby improving the light extraction efficiency of the light-emitting device 10. When manufacturing the display panel, the polarizer 50 can be bonded to the module after the patterning process of the refractive layer 30. The adhesive layer 51 of the polarizer 50 has a certain thickness and viscosity. Combined with the design of the groove 33 formed on the second section 32 in the embodiment of the present invention, the contact area between the adhesive layer 51 and the refractive layer 30 can be increased, so that the adhesive layer 51 and the refractive layer 30 are tightly bonded. There is no need to additionally produce an optical auxiliary layer in the display panel during the process, which can save the process of the display panel and reduce costs.

[0022] In some embodiments, as Figure 5 As shown, the first section 31 of the refractive layer 30 includes a central portion 311 and an edge portion 312, with the edge portion 312 surrounding the central portion 311. The thickness of the edge portion 312 in a direction perpendicular to the plane e of the substrate 00 gradually decreases from the central portion 311 toward the edge portion 312. The refractive index of the refractive layer 30 is greater than the refractive index of the adhesive layer 51. When large-angle light emitted by the light-emitting device 10 enters the adhesive layer 51 at the interface where the edge portion 312 contacts the adhesive layer 51, the light is deflected in a direction perpendicular to the plane e of the substrate 00, allowing more light emitted by the light-emitting device 10 to be emitted from the light-emitting surface of the display panel, thereby improving the light extraction efficiency of the light-emitting device 10 and reducing the power consumption of the display panel.

[0023] In some embodiments, as Figure 5 As shown, the second section 32 contacts the surface of the touch line 21 away from the substrate 00. That is, there is no insulating layer between the touch line 21 and the second section 32. When the display panel is manufactured, the refractive layer 30 can be directly manufactured after the patterning process of the touch line 21, thereby saving a process of the insulating layer and facilitating the thinning of the display panel. The second section 32 covering the touch line 21 can protect the touch line 21 and prevent the adhesive layer 51 of the polarizer 50 from corroding the touch line 21. Although the embodiment of the present invention has a groove 33 formed on the second section 32, the material of the refractive layer is still retained at the bottom of the groove 33, which can still isolate the touch line 21 from the adhesive layer 51 of the polarizer 50 and prevent the adhesive layer 51 from corroding the touch line 21.

[0024] In the embodiment of the present invention, the groove 33 has a certain extension direction and a certain width. The grooves 33 arranged at different positions in the display area may have different extension directions. The width of the groove 33 at a local position is used as an example to illustrate. Figure 6 A partial schematic diagram of another display panel provided by an embodiment of the present invention, Figure 6 The top view of the position of the light emitting device 10 is shown, and the touch line 21, the first subsection 31 and the second subsection 32 in the refractive layer 30, and the groove 33 on the second subsection 32 are shown. Figure 6 The illustrated groove 33-1 extends along a first direction a. The width of the groove 33-1 in a second direction b is D, where D is less than the material resolution of the refractive layer 30. The first direction a and the second direction b intersect with each other, and the first direction a and the second direction b are parallel to the plane of the substrate 00. Material resolution refers to the minimum size of a pattern formed by exposure during the exposure and development process, and is typically expressed in unit length (e.g., micrometers).

[0025] Figure 7A schematic diagram of the manufacturing principle of a groove in a display panel provided by an embodiment of the present invention. The film layer 001 is patterned by using an exposure-development process on a substrate 000. Figure 7 (A) shows that when the width of the preset exposure area on the film layer 001 parallel to the paper surface is D1, and D1 is smaller than the material resolution of the film layer 001, after exposure and development, a groove is formed on the film layer 001, and the material of the film layer 001 is retained at the bottom of the groove. Figure 7 (B) shows that when the width of the preset exposure area on the film layer 001 parallel to the paper surface is D2, and D2 is greater than the material resolution of the film layer 001, an opening is formed on the film layer 001 after exposure and development, and the bottom of the opening exposes the substrate 000.

[0026] In this embodiment of the present invention, the width of the groove 33 in one direction is set to be smaller than the material resolution of the refractive layer 30. The groove width requirement for the groove 33 ensures that the refractive layer material at the predetermined groove formation location is not fully exposed during the exposure process. After development, the groove 33 is formed, and the refractive layer material remains at the bottom of the groove 33. This allows the second section 32 at the location of the groove 33 to still effectively cover the underlying substrate. The refractive layer 30 can be patterned in a single process to form the first section 31, the second section 32, the hollow portion K, and the groove 33 located on the second section 32, simplifying the manufacturing process.

[0027] In addition, if Figure 6 As shown, the extension direction of the groove 33-2 is different from the extension direction of the groove 33-1. The width of the groove 33-2, perpendicular to the extension direction of the groove 33-2, is D, which is less than the material resolution of the refractive layer 30. In the embodiment of the present invention, the extension directions of the grooves 33 provided at different positions can be different. The extension direction of the groove 33 at a specific position can be determined first, and then the width of the groove 33, perpendicular to its extension direction, can be determined.

[0028] In some embodiments, as Figure 6As shown in the top view, the opening of groove 33 is roughly rectangular in shape. The top view of groove 33 includes a long side and a short side. The long side of the pattern extends in a first direction, while the short side of the pattern extends in a corresponding second direction. The width of groove 33 along the short side of the pattern is less than the material resolution, while the width of groove 33 along the long side of the pattern is greater than the material resolution. The opening of groove 33 is roughly rectangular in shape in the top view, and the width of groove 33 along the short side of the pattern is less than the material resolution. This ensures that the refractive layer material remains at the bottom of groove 33 after the exposure and development processes, providing better coverage of the underlying substrate. Furthermore, it allows for a relatively large area of ​​groove 33, significantly increasing the surface area of ​​refractive layer 30 away from substrate 00, effectively reducing the water drop angle. It also effectively relieves local stress during module manufacturing and prevents film wrinkling.

[0029] In some embodiments, as Figure 6 As shown, the groove 33 includes a first groove 331; at least one end of the first groove 331 along its extension direction is connected to the hollow K. During the display panel module manufacturing process, after the refractive layer 30 is patterned, a protective film is attached to the refractive layer 30. A suction nozzle is then attached to one side of the protective film to transfer the module. Providing the first groove 331 in the second section 32, which is connected to the hollow K, increases the space for air circulation between the protective film and the refractive layer 30 during suction. This allows for better stress relief and prevents localized stress from compressing the pattern of the refractive layer 30, causing wrinkles.

[0030] like Figure 6 As shown, the touch line 21 includes a first touch line 211 , and the extending direction of the first groove 331 intersects with the extending direction of the first touch line 211 . Figure 6 is a partial top view of the display panel, and the top view direction is parallel to the direction e perpendicular to the plane of the substrate 00. Figure 6 It can be seen that along the direction e perpendicular to the plane of the substrate 00, the first groove 331 overlaps with the first touch line 211. Figure 3From a holographic perspective, the touch line 21 in the display panel runs between adjacent light-emitting devices 10. The second section 32 overlaps the touch line 21, and a hollow K is required between the second section 32 and the first section 31. This imposes certain requirements on the size and position of the second section 32. In this embodiment of the present invention, a first groove 331 is provided on the second section 32 to overlap the first touch line 211, and at least one end of the first groove 331 is connected to the hollow K. This allows for a relatively large first groove 331 to be formed in the second section 32. The first groove 331 can further increase the surface area of ​​the refractive layer 30 away from the substrate 00, effectively reducing the water drop angle. It can also better relieve local stress during the module manufacturing process and prevent film wrinkles.

[0031] It should be noted that, in the embodiment of the present invention, the first touch line 211 is named according to the type of groove 33 that overlaps with it. If the first groove 331 is connected to the hollow K at least at one end in its extension direction, the touch line 21 that overlaps with the first groove 331 is named the first touch line 211. Figure 6 In the embodiment, four touch lines 21 are shown, and each of the four touch lines 21 extends in the same direction. These four touch lines 21 are all first touch lines 211. In addition, the following embodiments will also involve a case where the touch line 21 includes a second touch line, and the groove 33 overlapping the second touch line is not connected to the hollow K.

[0032] like Figure 6 As shown, the first touch line 211 overlaps with at least two first grooves 331 arranged along its extension direction. This arrangement, by increasing the number of first grooves 331, can further increase the surface area of ​​the refractive layer 30 away from the substrate 00, thereby enhancing the adhesion between the refractive layer 30 and the film layer above it. It also allows stress relief at more locations, effectively preventing wrinkles in the refractive layer 30 during module manufacturing.

[0033] In other embodiments, Figure 8 A partial schematic diagram of another display panel provided by an embodiment of the present invention, Figure 8 Schematic diagram of a top view of the location of a light emitting device 10. Figure 8 As shown, the groove 33 includes a first groove 331 , and at least one end of the first groove 331 in its extending direction is connected to the hollow K. Figure 8 The figure also shows an enlarged view of the position of the first groove 331. Taking the extension direction of the first groove 331 at the enlarged position as the first direction a as an example, the first direction a is parallel to the plane where the substrate 00 is located. The first groove 331 includes a first sub-portion 3311 and a second sub-portion 3312. Figure 8As can be seen from the top view, along the direction perpendicular to the plane of the substrate 00, at least one side of the first touch line 211 overlaps with the first sub - part 3311; in the second direction b, the width of the first sub - part 3311 is d1, and the width of the second sub - part 3312 is d2. The second direction b intersects with the first direction a and is parallel to the plane of the substrate 00. Among them, d1 < d2, and d2 is less than the material resolution of the refraction layer 30. In this embodiment, setting d1 < d2 and d2 less than the material resolution of the refraction layer 30 enables the first part 31, the second part 32, the hollow K, and the first groove 331 on the second part 32 of the refraction layer 30 to be fabricated by a single patterning process during the manufacture of the display panel. At the position of the first groove 331, it is not fully exposed, so that the bottom of the first groove 331 retains the refraction layer material. And by setting the slot width of the sub - part overlapping with the side of the first touch line 211 in the first groove 331 to be relatively smaller, it can make the amount of residual film exposed at the position overlapping with the side of the first touch line 211 larger, ensuring good coating of the side of the first touch line 211 and avoiding corrosion due to poor coating of the side of the first touch line 211.

[0034] In some embodiments, as Figure 8 shown, along the direction perpendicular to the plane of the substrate 00, both sides of the first touch line 211 overlap with a first sub - part 3311 respectively. At least at the position where the first groove 331 overlaps with the first touch line 211, a second sub - part 3312 is provided between the two first sub - parts 3311. In this embodiment, setting both sides of the first touch line 211 to overlap with a first sub - part 3311 respectively makes the extension direction of the first groove 331 intersect with the extension direction of the first touch line 211, enabling a first groove 331 with a relatively large area size to be fabricated on the second part 32, ensuring that the first groove 331 increases the surface area of the refraction layer 30 on the side away from the substrate 00 more effectively, reducing the water contact angle, and also enabling better release of local stress and prevention of film layer wrinkles during the module manufacturing process. Moreover, it can ensure that at least a relatively thick refraction layer material remains on both sides of the first touch line 211, providing good coating for the sides of the first touch line 211 and avoiding corrosion due to poor coating of the sides of the first touch line 211.

[0035] Optionally, as Figure 8 shown in the enlarged view position of

[0036] In some embodiments, Figure 9A partial schematic diagram of another display panel provided by an embodiment of the present invention. Figure 9 The positions of the four light emitting devices 10 in the display area AA are shown. Figure 9 As shown, a first groove 331 is provided between two adjacent light-emitting devices 10. At least one first groove 331 is connected to a hollow K at each end along its extension direction. In other words, one first groove 331 is connected to two adjacent hollows K. This arrangement allows for greater airflow between the protective film and the refractive layer 30 during module manufacturing, when the module is transferred using a suction nozzle attached to one side of the protective film. This facilitates local stress release and effectively prevents wrinkles in the pattern of the refractive layer 30 caused by local stress.

[0037] Figure 9 In the embodiment, the first groove 331 extends in a direction substantially perpendicular to the touch line 21 it overlaps. In other words, the first groove 331 extends in a direction substantially perpendicular to the touch line 21 it overlaps. In other embodiments, the first groove 331 extends in a direction substantially perpendicular to the touch line 21 it overlaps. Figure 10 A partial schematic diagram of another display panel provided by an embodiment of the present invention. Figure 10 The positions of the four light emitting devices 10 in the display area AA are shown. Figure 10 As shown, a groove 33 is provided on the second portion 32, and at least one first groove 331 is connected to a hollow K at both ends of its extension direction. An acute angle is formed between the extension direction of the first groove 331 and the touch line 21 overlapping with it.

[0038] In some embodiments, Figure 11 A partial schematic diagram of another display panel provided by an embodiment of the present invention, Figure 11 Schematic diagram of a top view of the location of a light emitting device 10. Figure 11 As shown, the groove 33 includes a second groove 332 , and the touch line 21 includes a second touch line 212 . The touch line 21 overlapping the second groove 332 is named the second touch line 212 . Figure 11 This is a partial top view of the display panel. In the top view, the second touch line 212 and its orthographic projection on the plane where the substrate 00 is located coincide with each other, and the second groove 332 and its orthographic projection on the plane where the substrate 00 is located coincide with each other. Figure 11As can be seen, the orthographic projection of the second touch line 212 on the substrate 00 is the first projection, and the orthographic projection of the second groove 332 on the substrate 00 is the second projection, with the first projection overlapping the second projection. It can be seen that, perpendicular to the direction of extension of the second touch line 212, the edge of the second projection is spaced a certain distance from the edge of the first projection. That is, in a top view, perpendicular to the direction of extension of the second touch line 212, the distance between the notch edge of the second groove 332 and the side edge of the second touch line 212 is greater than zero. In this embodiment, the second groove 332 is positioned to overlap with the second touch line 212, and the refractive layer material beneath the second groove 332 effectively covers the second touch line 212. For example, when a polarizer is attached above the refractive layer 30, the polarizer's adhesive layer is effectively isolated from the second touch line 212, preventing corrosion of the second touch line 212.

[0039] In some embodiments, as Figure 11 As shown, the second groove 332 has a width d4 perpendicular to the extension direction of the second touch line 212, which is less than the material resolution of the refractive layer 30. This arrangement enables the first subsection 31, the second subsection 32, the hollow K, and the second groove 332 on the second subsection 32 of the refractive layer 30 to be formed in a single patterning process. Due to certain requirements for the width of the second groove 332, the refractive layer material at the predetermined groove formation location is not fully exposed during the exposure process. After development, the second groove 332 is formed, and the refractive layer material remains at the bottom of the second groove 332, effectively covering the second touch line 212 and preventing the second touch line 212 from being exposed and corroded.

[0040] In some embodiments, as Figure 11 As shown, the width of the second groove 332 in a direction perpendicular to the extension direction of the second touch line 212 is d4. Along the extension direction of the second touch line 212, the width of the second groove 332 is d5, where d5 > d4. This arrangement allows the area of ​​a single second groove 332 to be relatively large. The second groove 332 increases the surface area of ​​the refractive layer 30 away from the substrate, significantly reducing the water drop angle.

[0041] In some embodiments, as Figure 11As shown in the top view, the first projection of the second touch line 212 overlaps the second projections of at least two second grooves 332 arranged along the extension direction of the second touch line 212. In other words, the second touch line 212 overlaps with at least two second grooves 332. This embodiment not only increases the surface area of ​​the refractive layer 30 away from the substrate, thereby improving the bonding strength between the refractive layer 30 and the film layer above it, but also provides multiple stress relief areas on the refractive layer 30, effectively preventing wrinkles in the refractive layer 30 during module manufacturing.

[0042] In other embodiments, Figure 12 A partial schematic diagram of another display panel provided by an embodiment of the present invention. Figure 12 Schematic diagram of a top view of the location of a light emitting device 10. Figure 12 As shown, the four second grooves 332 interconnect to form an annular groove 33C; the orthographic projection of the annular groove 33C on the plane of the light-emitting device 10 surrounds a hollow K. The width of the second groove 332, perpendicular to the extension direction of the second touch line 212, is d4, which is less than the material resolution of the refractive layer 30. The provision of the annular groove 33C in this embodiment ensures that the touch line 21 beneath the annular groove 33C is well covered by the refractive layer material, preventing the touch line 21 from being viewed from above. Furthermore, the larger side surface area of ​​the annular groove 33C further increases the surface area of ​​the refractive layer 30 away from the substrate, which has a more positive effect on reducing the water drop angle.

[0043] In other embodiments, Figure 13 A partial schematic diagram of another display panel provided by an embodiment of the present invention. Figure 13 As shown, the light emitting device 10 includes a first light emitting device 11 and a second light emitting device 12 adjacent to each other, and the touch lines 21 include a third touch line 213 and a fourth touch line 214. The orthographic projections of the third touch line 213 and the fourth touch line 214 on the plane where the light emitting device 10 is located are located between the first light emitting device 11 and the second light emitting device 12. There is a break between the third touch line 213 and the fourth touch line 214. Multiple touch electrodes need to be produced in the entire display area. The intersecting touch lines 21 form a grid of touch electrodes, and adjacent touch electrodes need to be disconnected, or dummy electrodes are produced between adjacent touch electrodes. Therefore, there are multiple touch electrodes in the display area. Figure 13 The schematic diagram shows the position of the break formed between the third touch line 213 and the fourth touch line 214 .

[0044] like Figure 13 As shown, the groove 33 includes a third groove 333. In the top view, the third groove 333 and its orthographic projection on the plane where the touch layer 20 is located coincide with each other. Figure 13As can be seen from the top view, the orthographic projection of the third groove 333 on the touch layer 20 extends through the fracture. The second segment 32 effectively covers the broken edges of the third touch line 213 and the fourth touch line 214. Since no touch lines exist at the fracture, the thickness requirement for the refractive layer material remaining below the third groove 333 is relatively low when the third groove 333 is formed there. This makes the third groove 333 easier to manufacture and improves product yield.

[0045] In some embodiments, as Figure 13 As shown, in the direction of extension of the third touch line 213 and the fourth touch line 214, the third groove 333 has a width d6, which is less than the material resolution of the refractive layer 30. This arrangement enables the first subsection 31, the second subsection 32, the hollow K, and the third groove 333 on the second subsection 32 of the refractive layer 30 to be formed in a single patterning process. Due to certain requirements for the width of the third groove 333, the refractive layer material at the predetermined third groove location is not fully exposed during the exposure process, resulting in the formation of the third groove 333 after development. Refractive layer material remains at the bottom of the third groove 333, ensuring that the broken edge of the touch line at the break location is well covered by the second subsection 32, preventing the touch line from being exposed and corroded.

[0046] Based on the same inventive concept, an embodiment of the present invention further provides a display device, Figure 14 A schematic diagram of a display device provided by an embodiment of the present invention is shown in FIG. Figure 14 As shown, the display device includes a display panel 100 provided by any embodiment of the present invention. The structure of the display panel 100 has been described in the above embodiments and will not be repeated here. The display device provided by the embodiment of the present invention can also be an electronic device with a display function, such as a tablet, mobile phone, computer, or television.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display panel, characterized in that: The display panel includes: a substrate and a plurality of light-emitting devices located on one side of the substrate; a touch layer located on the side of the light-emitting devices away from the substrate; the touch layer includes touch lines, and the orthographic projection of the touch lines on the plane where the light-emitting devices are located is located between adjacent light-emitting devices; a refraction layer located on the side of the touch layer away from the substrate; the refraction layer includes a first part, a second part, and a hollow between the first part and the second part; along the direction perpendicular to the plane where the substrate is located, the first part overlaps with the light-emitting devices, and the second part overlaps with the touch lines; the orthographic projection of the hollow on the plane where the light-emitting devices are located surrounds the light-emitting devices; wherein, the second part has a groove, and the surface of the second part away from the substrate is recessed towards the substrate to form the groove.

2. The display panel according to claim 1, wherein the groove extends along a first direction, the width of the notch of the groove in a second direction is less than the material resolution of the refraction layer, the first direction and the second direction intersect with each other, and the first direction and the second direction are respectively parallel to the plane where the substrate is located.

3. The display panel according to claim 1, wherein the groove includes a first groove; at least one end of the first groove in its extending direction is connected to the hollow.

4. The display panel according to claim 3, wherein the touch line includes a first touch line, and the extending direction of the first groove intersects with the extending direction of the first touch line; along the direction perpendicular to the plane where the substrate is located, the first groove overlaps with the first touch line.

5. The display panel according to claim 4, wherein the first touch line overlaps with at least two of the first grooves arranged in its extending direction.

6. The display panel according to claim 4, wherein the first groove extends along a first direction, and the first direction is parallel to the plane where the substrate is located; the first groove includes a first sub-part and a second sub-part; along the direction perpendicular to the plane where the substrate is located, at least one side of the first touch line overlaps with the first sub-part; in a second direction, the width of the first sub-part is d1, the width of the second sub-part is d2, the second direction intersects with the first direction, and the second direction is parallel to the plane where the substrate is located; wherein, d1 < d2, and d2 is less than the material resolution of the refraction layer.

7. The display panel according to claim 6, wherein along the direction perpendicular to the plane where the substrate is located, two sides of the first touch line respectively overlap with one of the first sub-parts; at least at the position where the first groove overlaps with the first touch line, the second sub-part is arranged between the two first sub-parts.

8. The display panel according to claim 3, wherein at least one of the first grooves is respectively connected to a hollow at both ends in its extending direction.

9. The display panel according to claim 1, wherein The groove includes a second groove, and the touch line includes a second touch line; The orthographic projection of the second touch line on the substrate is a first projection, the orthographic projection of the second groove on the substrate is a second projection, and the first projection covers the second projection; In a direction perpendicular to the extending direction of the second touch line, an edge of the second projection is spaced a certain distance from an edge of the first projection.

10. The display panel according to claim 9, wherein: In a direction perpendicular to the extending direction of the second touch line, the width of the second groove is d4, and d4 is smaller than the material resolution of the refractive layer.

11. The display panel according to claim 9, wherein In a direction perpendicular to the extending direction of the second touch line, the width of the second groove is d4; along the extending direction of the second touch line, the width of the second groove is d5, where d5>d4.

12. The display panel according to claim 9, wherein: The first projection covers at least two second projections arranged along the extending direction of the second touch line.

13. The display panel according to claim 9, wherein: The four second grooves are interconnected to form an annular groove; The orthographic projection of the annular groove on the plane where the light emitting device is located surrounds one of the hollows.

14. The display panel according to claim 1, wherein The light emitting devices include a first light emitting device and a second light emitting device that are adjacent to each other, and the touch lines include a third touch line and a fourth touch line; orthographic projections of the third touch line and the fourth touch line on the plane where the light emitting devices are located are located between the first light emitting device and the second light emitting device; There is a break between the third touch line and the fourth touch line; the groove includes a third groove, and the orthographic projection of the third groove on the touch layer passes through the break.

15. The display panel according to claim 14, wherein: In the extending direction of the third touch line and the fourth touch line, the width of the third groove is d6, and d6 is smaller than the material resolution of the refractive layer.

16. The display panel according to claim 1, wherein The first subsection includes a central portion and an edge portion, wherein the edge portion surrounds the central portion; From the center portion toward the edge portion, the thickness of the edge portion gradually decreases in a direction perpendicular to the plane where the substrate is located.

17. The display panel according to claim 1, wherein: The second portion contacts a surface of the touch line away from the substrate.

18. The display panel according to claim 1, wherein The display panel includes a polarizer, which is located on a side of the refractive layer away from the substrate; the polarizer includes an adhesive layer, which fills the hollow and the groove.

19. The display panel according to claim 18, wherein: The refractive index of the refractive layer is greater than the refractive index of the adhesive layer.

20. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 19.

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