Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device. The display panel comprises a transparent substrate, and the transparent substrate comprises a substrate, a first protective layer and a first wiring combination. The first wiring combination comprises a first wiring and a first shading part, and the first shading part is located on the side, close to the substrate, of the first wiring and overlaps with the first wiring in the direction perpendicular to the plane where the display panel is located. The first protection layer comprises the first groove, the first wiring combination is located in the first groove, stress borne by the first protection layer can be released when the display panel is bent, and the risk that the first protection layer is bent and damaged is reduced. In addition, the segment difference between the first wiring combination and the first protection layer in the direction perpendicular to the plane where the display panel is located is reduced, the structural stability of the first wiring combination is released and improved, the risk that the first wiring is warped and broken when the display panel is bent is reduced, and the reliability of the display panel is improved.

Description

Technical Field

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

[0002] Studies have found that during the bending process of a display panel, the protective film layer on one side of the substrate experiences significant bending stress, which can easily cause warping. Furthermore, the traces fabricated on one side of the protective film layer are typically unidirectional rather than laid across the entire surface, creating a step difference between the trace structure and the protective film layer. This negatively impacts the structural stability of the trace structure during panel bending. Summary of the Invention

[0003] In view of this, this application provides a display panel and a display device to help solve the above problems.

[0004] In a first aspect, this application provides a display panel, the display panel including a transparent substrate, the transparent substrate comprising: Substrate; A first protective layer is located on one side of the substrate; The first trace assembly includes a first trace and a first light-shielding part. The first light-shielding part is located on the side of the first trace closer to the substrate and overlaps with the first trace in a direction perpendicular to the plane of the display panel. The first protective layer includes a first groove, and the first wiring assembly is located within the first groove.

[0005] Secondly, this application provides a display device, including a display panel as provided in the first aspect.

[0006] In this embodiment, the first protective layer includes a first groove. After the first protective layer is fabricated on one side of the substrate, a hole is drilled in the first protective layer at the position corresponding to the first trace assembly to form the first groove. The first protective layer includes a recessed structure, which helps to release the stress on the first protective layer when the display panel is bent, reducing the risk of bending damage to the first protective layer. Furthermore, the first trace assembly is located in the first groove, which helps to lower the position of the first trace assembly to the film layer where the first protective layer is located, reducing the height of the first trace assembly protruding from the surface of the first protective layer away from the plane of the substrate, reducing the step difference between the first trace assembly and the first protective layer in the direction perpendicular to the plane of the display panel, releasing and improving the structural stability of the first trace assembly, reducing the risk of the first trace warping and breaking when the display panel is bent, and improving the reliability of the display panel. Attached Figure Description

[0007] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0008] Figure 1 This is a plan view of a display panel provided in an embodiment of this application; Figure 2 A method provided for this application Figure 1 A schematic diagram of the cross-section along line A-A'; Figure 3 Another one provided for this application Figure 1 Schematic diagram of the section along the middle A-A'; Figure 4 Another one provided for this application Figure 1 A schematic diagram of the cross-section along line A-A'; Figure 5 Another one provided for this application Figure 1 A schematic diagram of the cross-section along line A-A'; Figure 6 Another one provided for this application Figure 1 A schematic diagram of the cross-section along line A-A'; Figure 7 Another kind of thing provided for itself Figure 1 A schematic diagram of the cross-section along line A-A'; Figure 8 A method provided for this application Figure 1 A schematic diagram of the cross-section along line B-B'; Figure 9 Another one provided for this application Figure 1 A schematic diagram of the cross-section along line A-A'; Figure 10 A plan view of yet another display panel provided in this application; Figure 11 A plan view of yet another display panel provided in this application; Figure 12 A method provided for this application Figure 11 A schematic diagram of the cross-section along line C-C'. Figure 13 This is a plan view of a display device provided in this application. Detailed Implementation

[0009] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0010] It should be understood that the described embodiments are merely some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort, including new embodiments obtained by combining the various embodiments mentioned in this application without technical conflict, are within the scope of protection of this application.

[0011] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms "a" and "the" as used in the embodiments of this application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0012] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0013] In the description of this specification, it should be understood that the terms "substantially", "approximately", "about", "about", "generally", "largely" used in the claims and embodiments of this application refer to values ​​that can be generally agreed upon within a reasonable range of process operations or tolerances, rather than a precise value.

[0014] It should be understood that although the terms "first," "second," etc., may be used to describe protective layers, grooves, wiring combinations, etc., in the embodiments of this application, these should not be limited to these terms. These terms are only used to distinguish protective layers, grooves, wiring combinations, etc., from one another. For example, without departing from the scope of the embodiments of this application, a first protective layer may also be referred to as a second protective layer, and similarly, a second protective layer may also be referred to as a first protective layer. Through meticulous and in-depth research, the applicant of this case has provided a solution to the problems existing in the prior art.

[0015] Figure 1 This is a plan view of a display panel provided in an embodiment of this application. Figure 2 A method provided for this application Figure 1 A schematic diagram of the cross section along line A-A'.

[0016] This application provides a display panel 100, such as Figure 1As shown, the display panel 100 includes a transparent substrate 200, which includes a substrate 10, and the substrate 10 is a light-transmitting structure. This application uses a flexible transparent display panel 100 as an example for illustration. The flexible transparent display panel 100 has a certain degree of bendability and can emit light from both sides. The dual-sided light emission of the display panel 100 means that light can be emitted from both surfaces of the display panel 100 in a direction perpendicular to the plane of the display panel 100.

[0017] Combination Figure 2 As shown, the transparent substrate 200 also includes a first protective layer 20, which is located on one side of the substrate 10. The first protective layer 20 is located on one side of the substrate 10 and can be used to ensure the stability of the substrate and provide collision buffering and other protective functions for other functional film layers on the transparent substrate 200. The first protective layer 20 is also a light-transmitting structure, which is beneficial for the display panel 100 to emit light from both sides.

[0018] The transparent substrate 200 also includes a first wiring assembly 30, which includes a first wiring 301 and a first light-shielding portion 302. Figure 2 As shown, the first trace 301 is a trace extending in the first direction X1. The first trace 301 can be a power signal line, ground signal line, data signal line, or other trace that drives the display panel 100 to operate. The first trace 301 is a metal trace, and the first trace 30 is a non-transparent structure. However, the arrangement of the first trace 30 does not cover the entire surface; a light-transmitting area is reserved in the display panel 100. In this application, a first light-shielding part 302 is provided on the side of the first trace 301 near the substrate 10 and overlaps with the first trace 301 in a direction perpendicular to the plane of the display panel 100. Optionally, the first light-shielding part 302 is a non-transparent black light-absorbing structure, which helps to prevent ambient light from entering the first trace 30, thereby causing metal reflection light and affecting the visual effect.

[0019] In the fabrication of the transparent substrate 200, the first protective layer 20 is typically fabricated on one side of the substrate 10 before the first trace assembly 30 is fabricated. However, research has found that the first trace assembly is located on the surface of the first protective layer away from the substrate. The first trace assembly is a structure extending in a first direction and has a certain height, which causes the first trace assembly to protrude from the surface of the first protective layer, resulting in a significant step difference between the first trace assembly and the first protective layer. When the display panel is bent, the stress at the step difference is significant, which can easily cause the first trace to warp or break.

[0020] In this embodiment, a first protective layer 20 is provided, including a first groove 201. After the first protective layer 20 is fabricated on one side of the substrate 10, a hole is drilled in the first protective layer 20 at the position corresponding to the first trace assembly 30 to form the first groove 201. The first protective layer 20 includes a recessed structure, which helps to release the stress on the first protective layer 20 when the display panel 100 is bent, reducing the risk of the first protective layer 20 being damaged by bending. Furthermore, the first trace assembly 30 is located within the first groove 201, which helps to lower the position of the first trace assembly 30 to the film layer position of the first protective layer 20, reducing the height of the first trace assembly 30 protruding from the surface of the first protective layer 20 away from the plane of the substrate 10, reducing the step difference between the first trace assembly 30 and the first protective layer 20 in the direction perpendicular to the plane of the display panel 100, releasing and improving the structural stability of the first trace assembly 30, reducing the risk of the first trace 301 warping and breaking when the display panel 100 is bent, and improving the reliability of the display panel 100.

[0021] Figure 3 Another one provided for this application Figure 1 Schematic diagram of the section along the middle A-A'.

[0022] As can be seen from the above embodiments, the first light-shielding part 302 is included on the side of the first trace 301 near the substrate 10, which helps to reduce the risk of metal reflection light caused by ambient light incident from the surface of the display panel 100 near the substrate 10, and improves the visual effect.

[0023] In one embodiment of this application, combined with Figure 1 , Figure 3 As shown, the first trace assembly 30 also includes a second light-shielding portion 303; the second light-shielding portion 303 is located on the side of the first trace 301 away from the substrate 10 and overlaps with the first trace 301 in a direction perpendicular to the plane of the display panel 100. This helps reduce the risk of metallic reflection caused by ambient light incident from the surface of the display panel 100 away from the substrate 10, thus improving visual effects. In summary, by providing light-shielding portions on both sides of the first trace 301 in a direction perpendicular to the plane of the display panel 100, it is beneficial to adapt to the double-sided light emission of the display panel 100, avoid the generation of metallic reflection from both sides of the display panel 100, and improve the double-sided light emission performance of the display panel 100.

[0024] In one embodiment of this application, reference continues to be made to... Figure 3As shown, in the direction perpendicular to the plane where the display panel 100 is located, the projection of the first light-shielding part 302 covers the projection of the first trace 301, and the projection of the second light-shielding part 303 covers the projection of the first trace 301. This ensures that both the first light-shielding part 302 and the second light-shielding part 303 completely block the first trace 301, preventing the first trace 301 from being exposed to ambient light and improving the reliability of the first light-shielding part 302 and the second light-shielding part 303 in preventing metal reflection light.

[0025] Figure 4 Another one provided for this application Figure 1 A schematic diagram of the cross section along line A-A'.

[0026] In one embodiment of this application, combined with Figure 1 , Figure 4 As shown, the display panel 100 also includes a second protective layer 40, which is located on the side of the second light-shielding portion 303 away from the substrate 10. The first protective layer 20 on the side of the first trace 301 near the substrate can isolate water and oxygen and also provides a certain impact buffering effect. The second protective layer 40 is also provided on the side of the first trace 301 away from the substrate 10, so that the side of the first trace 301 away from the substrate 10 also has a protective structure, which helps to improve the protection of the functional traces in the display panel 100 and extend the service life of the display panel 100.

[0027] In one embodiment of this application, the second protective layer 40 includes at least one inorganic insulating layer, which contains inorganic materials, thus facilitating the function of isolating water and oxygen.

[0028] In one embodiment of this application, reference continues to be made to... Figure 3 , Figure 4 As shown, the first wiring assembly 30 also includes a first planarization layer 304, which is located on the side of the first wiring 301 away from the substrate 10. When the first protective layer 20 is hollowed out to form the first groove 201, the first groove 201 formed is generally an inverted trapezoid due to process reasons, and the width of the first wiring 301 is smaller than the width of the first light-shielding part 302. At this time, the first groove 201 may have gaps on the sidewalls or the surface of the first wiring assembly 30 away from the substrate 10 may not be aligned with the surface of the first protective layer 20 away from the substrate 10. In this case, when other functional film layers such as the second light-shielding part 303 are directly prepared on the side of the first wiring assembly 30 away from the substrate 10, it is not conducive to the structural flatness of the display panel 100. Therefore, in this embodiment, a first planarization layer 304 is prepared on the side of the first trace 301 away from the substrate 10. The first planarization layer 304 fills the first groove 201, which is beneficial to the flatness of the junction structure after the first trace assembly 30 is prepared by opening the first groove 201, thereby improving the structural flatness of the display panel and reducing the risk of bending damage to the display panel 100.

[0029] In one embodiment of this application, reference continues to be made to... Figure 4 As shown, in the first wiring assembly 30, insulating materials are included between the first light-shielding part 302 and the first wiring 301, and between the first wiring 301 and the first planarization layer 304. This helps to avoid leakage channels between adjacent film layers. Furthermore, each film layer will have certain structural stress during its formation. By first setting an insulating material between adjacent film layers, it is beneficial to buffer the structural stress and avoid warping or peeling damage to the lower functional film layer during the preparation of the upper film layer, thereby improving the structural and functional reliability of the display panel 100.

[0030] Figure 5 Another one provided for this application Figure 1 A schematic diagram of the cross section along line A-A'.

[0031] In one embodiment of this application, the second light-shielding portion 303 is a non-full-surface laid structure corresponding to the first trace 301, and there is a step between the second light-shielding portion 303 and its adjacent film layers. For example... Figure 5 As shown, the second light-shielding part 303 is located in the first groove 201, which helps to prevent the second light-shielding part 303 from protruding from the plane of the first protective layer 20 away from the substrate 10, thereby preventing the second light-shielding part 303 from forming a step with the surface of the first protective layer 20 away from the substrate 10. This can further protect the second light-shielding part 303 when the display panel 100 is bent, reducing the risk of the second light-shielding part 303 warping or breaking.

[0032] In one embodiment of this application, reference continues to be made to... Figure 5 As shown, the first planarization layer 304 includes a second groove 304A at the position where it overlaps with the first trace 301 in a direction perpendicular to the plane of the display panel 100. Exemplarily, after the first planarization layer 304 is fabricated, the second groove 304A is created by hollowing out the first planarization layer 304. Alternatively, during the fabrication of the first planarization layer 304, it can be directly patterned so that the first planarization layer 304 fills the portion of the first groove 201 near the sidewall, and the material of the first planarization layer 304 is not filled at the position corresponding to the first trace 301, thereby forming the second groove 304A.

[0033] In this embodiment, the second light-shielding part 303 is located in the second groove 304A, which helps to reduce the total height of the second light-shielding part 303 and the first wiring assembly 30, thereby reducing the degree of compression of the space structure in the first groove 201 when the second light-shielding part 303 is filled into the first groove 201. This helps to provide sufficient manufacturing space for the first wiring 301, provides conditions for increasing the height of the first wiring 301 in the plane direction perpendicular to the display panel 100, and reduces the wiring impedance of the first wiring 301.

[0034] Figure 6 Another one provided for this application Figure 1 A schematic diagram of the cross section along line A-A'.

[0035] In one embodiment of this application, such as Figure 6 As shown, the first planarization layer 304 includes a non-transparent material. Optionally, the first planarization layer 304 includes a black light-absorbing material, which is suitable for realizing the anti-reflection function of the second light-shielding part 303. In this embodiment, the material of the first planarization layer 304 is the same as the material of the first light-shielding part 302.

[0036] In this embodiment, the first planarization layer 304 is reused as the second light-shielding portion 303. This facilitates filling the first groove 201 with the first planarization layer 304 after the first trace 301 is fabricated. Furthermore, the first planarization layer 304 wraps around the first trace 301 on the side away from the substrate 10, which helps to block ambient light incident from the surface of the display panel 100 away from the substrate 10 from illuminating the first trace 301. Additionally, it helps to avoid the compression of the space structure within the first groove 201 when the additional second light-shielding portion 303 is filled into the first groove 201, increasing the fabrication space for the first trace 301, providing conditions for increasing the height of the first trace 301 in the direction perpendicular to the plane of the display panel 100, and reducing the trace impedance of the first trace 301.

[0037] In one embodiment of this application, reference continues to be made to... Figure 3 , Figure 4 As shown, the second light-shielding portion 303 is located outside the first groove 201. An insulating material is included between the second light-shielding portion 303 and the first planarization layer 304. This helps to prevent leakage current paths between adjacent film layers. Furthermore, each film layer experiences structural stress during fabrication. Providing an insulating material between adjacent film layers helps to buffer this stress, preventing warping or peeling damage to the lower functional film layer during the fabrication of the upper film layer, thus improving the structural and functional reliability of the display panel 100. Optionally, an organic insulating material is included between the second light-shielding portion 303 and the first planarization layer 304. Organic materials have good toughness and can serve as an elastic buffer layer, capable of withstanding tensile and compressive stresses when the display panel 100 is bent, reducing the risk of cracks caused by bending.

[0038] Figure 7 Another kind of thing provided for itself Figure 1 A schematic diagram of the cross section along line A-A'.

[0039] In one embodiment of this application, such as Figure 7As shown, in a plane perpendicular to the display panel 100, a via K1 is included between the first light-shielding part 302 and the first trace 301. The first trace 301 is connected to the first light-shielding part 302 through the via K1. The first light-shielding part 302 includes a conductive material, which facilitates the formation of a parallel structure between the first trace 301 and the first light-shielding part 302, reduces the trace impedance of the first trace 301, and improves the accuracy of signal transmission by the first trace 301. The via K1 between the first trace 301 and the first light-shielding part 302 is prepared after the first light-shielding part 302 and the insulating layer between the first light-shielding part 302 and the first trace 301 are prepared. This allows the material included in the first trace 301 to be directly deposited in the via K1 and connected to the first light-shielding part 302 during the preparation of the first trace 301. Furthermore, a via K1 is provided between the second light-shielding part 303 and the first trace 301 in a direction perpendicular to the plane of the display panel 100. The second light-shielding part 303 is connected to the first trace 301 through the via K1, and the second light-shielding part 303 includes a conductive material. The via K1 between the first trace 301 and the second light-shielding part 303 is prepared after the first planarization layer 304 and the insulating layer between the first planarization layer 304 and the second light-shielding part 303 are prepared, so that when preparing the second light-shielding part 303, the material included in the second light-shielding part 303 can be directly deposited in the via K1 and connected to the first trace 301. Optionally, the first light-shielding part 302 and the second light-shielding part 303 are made of the same material. This is beneficial for the first trace 301 and the second light-shielding part 303 to also form a parallel structure, further reducing the trace impedance of the first trace 301 and improving the accuracy of the signal transmitted by the first trace 301.

[0040] Alternatively, in a plane perpendicular to the display panel 100, a via K1 is included between the first light-shielding part 302 and the first trace 301. The first trace 301 is connected to the first light-shielding part 302 through the via K1. The first light-shielding part 302 includes a conductive material, so that the first trace 301 and the first light-shielding part 302 form a parallel structure, reducing the trace impedance of the first trace 301 and improving the accuracy of the signal transmitted by the first trace 301.

[0041] Alternatively, in a plane perpendicular to the display panel 100, a via K1 is provided between the second light-shielding part 303 and the first trace 301. The second light-shielding part 303 is connected to the first trace 301 through the via K1, and the second light-shielding part 303 includes a conductive material. This forms a parallel structure between the first trace 301 and the second light-shielding part 303, reducing the trace impedance of the first trace 301 and improving the accuracy of signal transmission by the first trace 301.

[0042] Figure 8 A method provided for this application Figure 1 A schematic diagram of the cross section along line B-B'.

[0043] In one embodiment of this application, such as Figure 1 As shown, the first trace 301 extends in the first direction X1.

[0044] In the embodiments of this application, combined with Figure 8 As shown, a plurality of vias K1 are included between the first light-shielding part 302 and the first trace 301, and the plurality of vias K1 are arranged in the first direction X1, so that the plurality of electrical connection positions between the first light-shielding part 302 and the first trace 301 are separated. This is beneficial to avoid other circuit structures when fabricating the vias K1 and reduce the degree of impact of the vias K1 on the structure within the display panel 100. Furthermore, a plurality of vias K1 are included between the second light-shielding part 303 and the first trace 301, and the plurality of vias K1 are arranged in the first direction, so that the plurality of electrical connection positions between the second light-shielding part 303 and the first trace 301 are separated. This is beneficial to avoid other circuit structures when fabricating the vias K1 and further reduces the degree of impact of the vias K1 on the structure within the display panel 100. Furthermore, the adhesion between the metal material and the black light-absorbing material used to prepare the light-shielding part may be insufficient. If the contact area between the first light-shielding part 302 and the first trace 301 is large, lifting is likely to occur. Similarly, if the contact area between the second light-shielding part 303 and the first trace 301 is large, lifting is also likely to occur. Therefore, this application uses multiple vias K1 to achieve contact between the light-shielding part and the first trace 301 instead of continuous electrical connection. This helps to reduce the contact area between the light-shielding part and the first trace 301 and improve the contact reliability between the first light-shielding part 302, the first trace 301, and the second light-shielding part 303.

[0045] In one embodiment of this application, reference continues to be made to... Figure 7 As shown, in the second direction X2, the width of the via K1 is W1, and the width of the first trace 301 is W2. The second direction X2 intersects the first direction X1 and is parallel to the plane where the display panel 100 is located. Therefore, the second direction X2 can be considered as the arrangement direction of the first trace 301.

[0046] In this embodiment, the width of the via K1 follows the rule W1 < W2 - W1, where (W2 - W1) represents the width of the first trace 301 in the second direction X2 where it does not contact the first light-shielding part 302 or the second light-shielding part 303. This helps to limit the width of the via K1 and reduce the contact area between the first trace 301 and the first light-shielding part 302 and the second light-shielding part 303. This helps to prevent warping between the first light-shielding part 302 and the first trace 301, and similarly helps to prevent warping between the second light-shielding part 303 and the first trace 301, thus improving the contact reliability between the first light-shielding part 302, the first trace 301, and the second light-shielding part 303.

[0047] Figure 9 Another one provided for this application Figure 1 A schematic diagram of the cross section along line A-A'.

[0048] In one embodiment of this application, such as Figure 9 As shown, the first protective layer 20 includes a first organic insulating layer 202 and a first inorganic insulating layer 203 overlapping in a direction perpendicular to the plane of the display panel 100. The first organic insulating layer 202 is located on the side of the first inorganic insulating layer 203 closest to the substrate 10 in the direction perpendicular to the plane of the display panel 100. The first organic insulating layer 202 comprises organic materials and has a certain structural toughness. The thickness of the first organic insulating layer 202 in the direction perpendicular to the plane of the display panel 100 is greater than the thickness of the first inorganic insulating layer 203 in the same direction, which is beneficial for providing support for the display panel 100 and meeting the bending requirements of flexible display panels. The first inorganic insulating layer 203 comprises inorganic materials and has a certain structural density, which is beneficial for achieving the effect of isolating water and oxygen, protecting the wiring structure such as the first trace 301 from water and oxygen corrosion. This embodiment combines the performance advantages of organic and inorganic materials, making up for the shortcomings of single materials, and providing a flat and stable substrate for the display panel 100.

[0049] The first groove 201 penetrates the first inorganic insulating layer 203 but not the first organic insulating layer 202, allowing the first groove 201 to have a certain height in the direction perpendicular to the plane of the display panel 100, thus providing conditions for fabricating the first wiring assembly 30 within the first groove 201. It also helps to avoid over-etching and damaging the substrate 10 caused by drilling or slotting through the first organic insulating layer 202.

[0050] In this embodiment, the display panel 100 further includes a third protective layer 50, which comprises an inorganic insulating material. Combined with the above description, the inorganic insulating material has the effect of isolating water and oxygen. In this application, the third protective layer 50 is positioned between the first organic insulating layer 202 and the first trace assembly 30 in a direction perpendicular to the plane of the display panel 100. This allows the side of the first groove 201 closest to the substrate 10 to utilize the superimposed structure of the first organic insulating layer 202 and the third protective layer 50 as a base, improving the structural support of the first groove 201 and isolating water and oxygen penetrating towards the first groove 201, thereby increasing the service life of the first trace 301.

[0051] Figure 10 A plan view of yet another display panel provided in this application.

[0052] In one embodiment of this application, such as Figure 10As shown, the first protective layer 20 includes a first organic insulating layer 202 and a first inorganic insulating layer 203 overlapping in a direction perpendicular to the plane of the display panel 100. The first organic insulating layer 202 is located on the side of the first inorganic insulating layer 203 that is closer to the substrate 10 in the direction perpendicular to the plane of the display panel 100, which is beneficial for using the first organic insulating layer 202 for structural support and the first inorganic insulating layer 203 for water and oxygen isolation.

[0053] The display panel 100 further includes a fourth protective layer 60, which is located on the side of the first protective layer 20 near the substrate 10 in the direction perpendicular to the plane of the display panel 100. The fourth protective layer 60 includes a second organic insulating layer 601 and a second inorganic insulating layer 602 overlapping in the direction perpendicular to the plane of the display panel 100. Optionally, the first organic insulating layer 202 and the second organic insulating layer 601 include the same material, and the first inorganic insulating layer 203 and the second inorganic insulating layer 602 include the same material. Similarly, the second organic insulating layer 601 includes organic material and has a relatively large thickness, serving as structural support and allowing for bending. The second inorganic insulating layer 602 includes inorganic material and has a relatively small thickness, serving as a barrier against water and oxygen. The second organic insulating layer 601 is located on the side of the second inorganic insulating layer 602 near the substrate 10 in the direction perpendicular to the plane of the display panel 100. In this embodiment, the first protective layer 20 and the fourth protective layer 60 are stacked on one side of the substrate 10, which helps to improve the structural toughness and water and oxygen isolation ability of the display panel 100, and improve the structural reliability of the display panel 100.

[0054] In this embodiment, a first groove 201 is provided that penetrates the first protective layer 20. A fourth protective layer 60 is also provided on the side of the first protective layer 20 facing the substrate 10. The fourth protective layer 60 can support the first groove 201 and isolate water and oxygen. Therefore, the height of the first groove 201 in the plane perpendicular to the display panel 100 can be set to be equal to the thickness of the first protective layer 20. This is beneficial to increase the usable space in the first groove 201, thereby providing conditions for preparing a thicker first trace 301 in the first groove 201, and thus providing conditions for reducing the trace impedance of the first trace 301.

[0055] Figure 11 This is a plan view of yet another display panel provided in this application. Figure 12 A method provided for this application Figure 11 A schematic diagram of the cross section along line C-C'.

[0056] In one embodiment of this application, such as Figure 11As shown, the display panel 100 includes a display area A1, which includes a transparent area A11 and a non-transparent area A12. The transparent area A11 can be used for emitting light, and the non-transparent area A12 can be used for fabricating wiring. (Continue to refer to...) Figure 12 As shown, the non-transparent area A12 includes a first boundary B1 extending in the first direction X1 and arranged in the second direction X2, and a second boundary B2 extending in the second direction X2 and arranged in the first direction X1. The plurality of first boundaries B1 and the plurality of second boundaries B2 surround and form a plurality of transparent areas A11 arranged in the first direction X1 and the second direction X2, whereby the transparent areas A11 do not include traces.

[0057] In this embodiment, the first trace assembly 30 is distributed within the first boundary B1, and the display panel 100 further includes a second trace assembly 70, which is distributed within the second boundary B2. Exemplarily, the first trace assembly 30 and the second trace assembly 70 can both be located within the first protective layer 20 in their non-intersecting portions. The first trace assembly 30 is placed in a first groove 201 extending in the first direction X1 within the first protective layer 20, and the second trace assembly 70 can also be placed in a second groove 204 extending in the second direction X2 within the first protective layer 20. The second trace assembly 70 includes a second trace 701, a third light-shielding portion 702, and a second planarization layer 703. The display panel 100 also includes a fourth light-shielding portion 704 located on the side of the second trace 701 away from the substrate 10. The second trace 701 can also be a power signal line, ground signal line, data signal line, or other trace that drives the display panel 100 to operate. Figure 12 As shown, taking the example where both the first trace 301 and the second trace 701 are ground signal lines, the ground signal lines have a mesh structure, which helps to reduce trace impedance. In this case, the first trace 301 and the second trace 701 are directly connected at the intersection. Therefore, the first trace 301 and the second trace 701 are connected at the intersection, the first light-shielding part 302 and the third light-shielding part 702 are also connected at the intersection, and the second light-shielding part 303 and the fourth light-shielding part 704 are also adjacent at the intersection.

[0058] For example, if the second trace 701 and the first trace 301 in the second trace assembly 70 need to cross each other at the point where they meet, they can cross each other in the fourth protective layer 60 through the second trace assembly 70 to avoid crossing, or the second trace assembly 70 can cross each other in the film layer on the side of the first trace assembly 30 away from the substrate 10 to avoid crossing.

[0059] Figure 13 This is a plan view of a display device provided in this application.

[0060] This application provides a display device 300, such as... Figure 13As shown, the display device 300 includes a display panel 100 as provided in any of the above embodiments. Optionally, the display device 300 is a device that uses a transparent display panel, such as a transparent television or a vehicle-mounted display.

[0061] In the display device 300, a first protective layer 20 includes a first groove 201. After the first protective layer 20 is fabricated on one side of the substrate 10, a hole is drilled in the first protective layer 20 at the position corresponding to the first trace assembly 30 to form the first groove 201. The first protective layer 20 includes a recessed structure, which helps to release the stress on the first protective layer 20 when the display panel 100 is bent, reducing the risk of the first protective layer 20 being damaged by bending. Furthermore, the first trace assembly 30 is located within the first groove 201, which helps to lower the position of the first trace assembly 30 to the film layer position of the first protective layer 20, reducing the height of the first trace assembly 30 protruding from the surface of the first protective layer 20 away from the plane of the substrate 10, reducing the step difference between the first trace assembly 30 and the first protective layer 20 in the direction perpendicular to the plane of the display panel 100, releasing and improving the structural stability of the first trace assembly 30, reducing the risk of the first trace 301 warping and breaking when the display panel 100 is bent, and improving the reliability of the display panel 100.

[0062] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A display panel, characterized in that, Includes a transparent substrate, the transparent substrate comprising: Substrate; A first protective layer is located on one side of the substrate; The first trace assembly includes a first trace and a first light-shielding part. The first light-shielding part is located on the side of the first trace closer to the substrate and overlaps with the first trace in a direction perpendicular to the plane where the display panel is located. The first protective layer includes a first groove, and the first wiring assembly is located within the first groove.

2. The display panel according to claim 1, characterized in that, The first trace assembly further includes a second light-shielding portion; the second light-shielding portion is located on the side of the first trace away from the substrate and overlaps with the first trace in a direction perpendicular to the plane of the display panel.

3. The display panel according to claim 2, characterized in that, In a plane perpendicular to the display panel, the projection of the first light-shielding part covers the projection of the first trace, and the projection of the second light-shielding part covers the projection of the first trace.

4. The display panel according to claim 2, characterized in that, The display panel further includes a second protective layer, which is located on the side of the second light-shielding portion away from the substrate.

5. The display panel according to claim 4, characterized in that, The second protective layer includes at least one inorganic insulating layer.

6. The display panel according to claim 2, characterized in that, The first trace assembly further includes a first planarization layer located on the side of the first trace away from the substrate; the first planarization layer fills the first groove.

7. The display panel according to claim 6, characterized in that, In the first wiring assembly, insulating material is included between the first light-shielding part and the first wiring, and between the first wiring and the first planarization layer.

8. The display panel according to claim 6, characterized in that, The second light-shielding part is located within the first groove.

9. The display panel according to claim 8, characterized in that, The first planarization layer includes a second groove at the position where it overlaps with the first trace in a direction perpendicular to the plane of the display panel; the second light-shielding portion is located within the second groove.

10. The display panel according to claim 8, characterized in that, The first planarization layer comprises a non-transparent material, and the first planarization layer is reused as the second light-shielding part.

11. The display panel according to claim 6, characterized in that, The second light-shielding part is located outside the first groove, and an insulating material is included between the second light-shielding part and the first planarization layer.

12. The display panel according to claim 6, characterized in that, In a plane perpendicular to the display panel, a via is included between the first light-shielding part and the first trace, the first trace is connected to the first light-shielding part through the via, and the first light-shielding part includes a conductive material. And / or, in a direction perpendicular to the plane of the display panel, the second light-shielding part includes a via between the second light-shielding part and the first trace, the second light-shielding part is connected to the first trace through the via, and the second light-shielding part includes a conductive material.

13. The display panel according to claim 12, characterized in that, The first trace extends in a first direction; wherein, the first light-shielding portion and the first trace include a plurality of vias, and the plurality of vias are arranged in the first direction; and / or, the second light-shielding portion and the first trace include a plurality of vias, and the plurality of vias are arranged in the first direction.

14. The display panel according to claim 12, characterized in that, In the second direction, the width of the via is W1, the width of the first trace is W2, and W1 < W2 - W1; the second direction intersects the first direction and is parallel to the plane of the display panel.

15. The display panel according to claim 1, characterized in that, The first protective layer includes a first organic insulating layer and a first inorganic insulating layer that overlap in a direction perpendicular to the plane of the display panel; the first organic insulating layer is located on the side of the first inorganic insulating layer that is closer to the substrate in a direction perpendicular to the plane of the display panel. The first groove penetrates the first inorganic insulating layer but does not penetrate the first organic insulating layer; the display panel further includes a third protective layer, which includes an inorganic insulating material; the third protective layer is located between the first organic insulating layer and the first wiring combination in a direction perpendicular to the plane of the display panel.

16. The display panel according to claim 1, characterized in that, The first protective layer includes a first organic insulating layer and a first inorganic insulating layer that overlap in a direction perpendicular to the plane of the display panel; the first organic insulating layer is located on the side of the first inorganic insulating layer that is closer to the substrate in a direction perpendicular to the plane of the display panel. The display panel further includes a fourth protective layer, which is located on the side of the first protective layer that is close to the substrate in the direction perpendicular to the plane of the display panel. The fourth protective layer includes a second organic insulating layer and a second inorganic insulating layer that overlap in the direction perpendicular to the plane of the display panel. The second organic insulating layer is located on the side of the second inorganic insulating layer that is close to the substrate in the direction perpendicular to the plane of the display panel. The first groove penetrates the first protective layer.

17. The display panel according to claim 1, characterized in that, The display panel includes a display area, which includes a transparent area and a non-transparent area; the non-transparent area includes a first boundary extending in a first direction and arranged in a second direction, and the non-transparent area also includes a second boundary extending in the second direction and arranged in the first direction; a plurality of first boundaries and a plurality of second boundaries surround to form a plurality of transparent areas arranged in the first direction and the second direction, and the transparent areas do not include wiring; The first wiring combination is distributed within the first boundary, and the display panel further includes a second wiring combination, which is distributed within the second boundary.

18. A display device, characterized in that, Includes the display panel as described in any one of claims 1-17.

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