Display panel and display device

Abstract

Embodiments of the present invention provide a display panel and a display device. The display panel includes a display area and a non-display area. The display panel includes a substrate and a conductive structure located on one side of the substrate, with the conductive structure located in the non-display area. At least a portion of an edge of the conductive structure, distal to the display area, overlaps with a cut edge of the substrate, perpendicular to the plane of the substrate. This invention can reduce the risk of glare at the edge of the display area.

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] Organic light-emitting diodes (OLEDs) are self-luminous, eliminating the need for additional light sources and contributing to the overall thinness and weight reduction of display devices. Organic self-luminous display technology also features fast response times, wide viewing angles, high brightness, and low power consumption, making it a current research focus. Fabricating OLEDs on flexible substrates also enables the creation of flexible display devices. Currently, flexible OLED display panels suffer from the problem of luminescence at the edges of the display area. Summary of the Invention

[0003] Embodiments of the present invention provide a display panel and a display device to reduce the risk of luminescence at the edge of a display area.

[0004] In a first aspect, an embodiment of the present invention provides a display panel, the display panel including a display area and a non-display area;

[0005] The display panel includes a substrate and a conductive structure located on one side of the substrate, wherein the conductive structure is located in a non-display area; along a direction perpendicular to the plane of the substrate, at least part of the edge of the conductive structure away from the display area overlaps with the cut edge of the substrate.

[0006] In a second aspect, based on the same inventive concept, an embodiment of the present invention further provides a display device, comprising the display panel provided by any embodiment of the present invention.

[0007] The display panel and display device provided by the embodiments of the present invention have the following beneficial effects: a conductive structure is provided in the non-display area, the conductive structure and the light-emitting device are located on the same side of the substrate, and at least part of the edge of the conductive structure on the side away from the display area overlaps with the cut edge of the substrate, and the conductive structure can shield at least part of the edge area of ​​the substrate on the side of the substrate close to the display layer. When the electrostatic charge generated on the surface of the display panel moves from the side edge of the display panel toward the substrate, it will first enter the conductive structure, thereby utilizing the conductive structure to block the static electricity from entering the substrate through the cut edge of the substrate. The conductive structure can also be used to conduct away the static electricity for dispersion, preventing localized accumulation of static electricity, and preventing static electricity from accumulating on the cut edge of the substrate and being unable to dissipate, thereby affecting pixels closer to the cut edge, thereby improving the phenomenon of brightening at the edge of the display area. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] 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.

[0009] Figure 1 A schematic diagram of a display panel provided by an embodiment of the present invention;

[0010] Figure 2 for Figure 1 A schematic cross-sectional view at the midline AA′;

[0011] Figure 3 A schematic diagram of another display panel provided by an embodiment of the present invention;

[0012] Figure 4 for Figure 1 Another cross-sectional view at the midline AA′;

[0013] Figure 5 for Figure 1 Another cross-sectional view at the midline AA′;

[0014] Figure 6 for Figure 1 Another cross-sectional view at the midline AA′;

[0015] Figure 7 for Figure 1 Another cross-sectional view at the midline AA′;

[0016] Figure 8 for Figure 1 Another cross-sectional view at the midline AA′;

[0017] Figure 9 A schematic diagram of another display panel provided by an embodiment of the present invention;

[0018] Figure 10 for Figure 9 A schematic cross-sectional view at the midline CC′;

[0019] Figure 11 A schematic diagram of another display panel provided by an embodiment of the present invention;

[0020] Figure 12 for Figure 1 Another cross-sectional view at the midline AA′;

[0021] Figure 13 for Figure 9Another cross-sectional view at the midline CC′;

[0022] Figure 14 for Figure 1 Another cross-sectional view at the midline AA′;

[0023] Figure 15 A schematic diagram of another display panel provided by an embodiment of the present invention;

[0024] Figure 16 A schematic diagram of another display panel provided by an embodiment of the present invention;

[0025] Figure 17 A schematic diagram of another display panel provided by an embodiment of the present invention;

[0026] Figure 18 A partial schematic diagram of another display panel provided by an embodiment of the present invention;

[0027] Figure 19 for Figure 1 Another cross-sectional view at the midline AA′;

[0028] Figure 20 for Figure 1 Another cross-sectional view at the midline AA′;

[0029] Figure 21 Schematic diagram of another display panel provided by an embodiment of the present invention

[0030] Figure 22 A schematic diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0031] 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.

[0032] 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.

[0033] During use, static electricity is generated on the surface of the display due to friction. This static electricity is then transferred to the cut edge of the substrate through the edge of the cover. The large amount of charge accumulated on the cut edge of the substrate cannot dissipate, forming an electric field. This in turn affects pixels closer to the cut edge, causing the edge of the display area to glow.

[0034] In order to solve the above problems, an embodiment of the present invention provides a display panel, in which a conductive structure is set in the non-display area to shield static electricity by using the conductive structure. The conductive structure can also be used to conduct static electricity away and disperse it to prevent local accumulation of static electricity, thereby preventing static electricity from accumulating at the cutting edge of the substrate and being unable to dissipate, thereby affecting pixels closer to the cutting edge, and improving the phenomenon of brightening at the edge of the display area.

[0035] Figure 1 A schematic diagram of a display panel provided by an embodiment of the present invention is shown. Figure 2 for Figure 1 A schematic cross-sectional view at the midline AA′. Figure 3 A schematic diagram of another display panel provided by an embodiment of the present invention.

[0036] like Figure 1 As shown, the display panel includes a display area AA and a non-display area NA, and the non-display area NA surrounds the display area AA; the display area AA includes a plurality of light emitting devices ( Figure 1 A conductive structure 20 is disposed in the non-display area NA.

[0037] like Figure 2 As shown, the display panel includes a substrate 30, an array layer 40 and a display layer 50. The light emitting device 10 is located in the display layer 50. The light emitting device 10 is an organic light emitting diode or an inorganic light emitting diode. The array layer 40 includes a pixel circuit, which is used to drive the light emitting device 10 to emit light. The conductive structure 20 is located on one side of the substrate 30. Figure 2 It can be seen that the edge of the conductive structure 20 away from the display area AA is flush with the cutting edge B of the substrate 30. The conductive structure 20 has conductive properties. Figure 1 and Figure 2 From a perspective, along a direction perpendicular to the plane of the substrate 30 , the edge of the conductive structure 20 away from the display area AA overlaps with the cutting edge B of the substrate 30 .

[0038] In another embodiment, Figure 3 As shown in the top view, the edge of the conductive structure 20 away from the display area AA includes a first edge 20-B1 and a second edge 20-B2, wherein, in a direction perpendicular to the plane of the substrate 30, the first edge 20-B1 overlaps with the cutting edge B of the substrate 30, while the second edge 20-B2 does not overlap with the cutting edge B of the substrate 30. That is, Figure 3In this embodiment, a portion of the edge of the conductive structure 20 away from the display area AA overlaps with the cutting edge B of the substrate 30. In other words, when viewed from the conductive structure 20 toward the substrate 30 in a direction perpendicular to the plane of the substrate 30, the conductive structure 20 can shield at least a portion of the edge region of the substrate 30. Figure 1 and Figure 3 The top view of the conductive structure 20 is for schematic purposes only and is not intended to limit the present invention. As long as the conductive structure 20 is disposed perpendicular to the plane of the substrate 30, any arrangement in which at least a portion of the edge of the conductive structure 20 away from the display area AA overlaps the cut edge B of the substrate 30 falls within the technical scope of the present invention.

[0039] The substrate 30 is a flexible substrate. The flexible substrate can be formed of a polymer material such as polyimide (PI), polycarbonate (PC), polyethersulfone (PES), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyarylate (PAR) or glass fiber reinforced plastic (FRP). The flexible substrate can be transparent, translucent or opaque. The substrate 30 is used to support structures such as the display layer 50 and the array layer 40 in the display panel. It can be understood that the substrate 30 includes a portion located in the display area AA and a portion located in the non-display area NA. The cutting edge B of the substrate 30 is understood to be the end edge of the substrate 30. During production, a display panel motherboard is first produced, and then the motherboard is cut along a preset cutting line to form a plurality of independent display panels. The cutting edge B of the substrate 30 is the edge formed after the motherboard is cut during the production process. When manufacturing the display panel provided in the embodiment of the present invention, the conductive portion is formed near the preset cutting line. Part of the conductive portion overlaps with the preset cutting line. Therefore, when cutting along the preset cutting line, the conductive portion is also cut simultaneously. In other words, the conductive portion is cut together with the substrate 30. The conductive portion remaining on the display panel after cutting forms the conductive structure 20, so that at least a portion of the edge of the conductive structure 20 away from the display area AA is flush with the cut edge B of the substrate 30. In other words, at least a portion of the edge of the conductive structure 20 away from the display area AA overlaps with the cut edge B of the substrate 30.

[0040] The display panel provided by an embodiment of the present invention has a conductive structure 20 disposed in the non-display area BA. The conductive structure 20 and the light-emitting device 10 are located on the same side of the substrate 30, and at least a portion of the edge of the conductive structure 20 on the side away from the display area AA is arranged to overlap with the cut edge B of the substrate 30. The conductive structure 20 can shield at least a portion of the edge area of ​​the substrate 30 on the side of the substrate 30 close to the display layer 50. During application, the electrostatic charge generated on the surface of the display panel will first enter the conductive structure 20 when moving from the side edge of the display panel toward the substrate 30. The conductive structure 20 is then used to block the static electricity from entering the substrate 30 through the cut edge B of the substrate 30. The conductive structure 20 can also be used to conduct away and disperse the static electricity, preventing localized static electricity accumulation. This can prevent static electricity from accumulating at the cut edge of the substrate 30 and failing to dissipate, thereby affecting pixels closer to the cut edge B, thereby improving the phenomenon of brightening at the edge of the display area.

[0041] In some embodiments, Figure 4 for Figure 1 Another cross-sectional view at the midline AA′. Figure 4 As shown, the display panel includes a functional structure 60 located on the same side of the substrate 30 as the conductive structure 20. At least a portion of the functional structure 60 is located in the display area AA. The conductive structure 20 and the functional structure 60 are made of the same material. The functional structure 60 is an existing structure in the display panel. Since the conductive structure 20 and the functional structure 60 are made of the same material, the conductive structure 20 and the functional structure 60 can be manufactured in the same process, simplifying the manufacturing process.

[0042] like Figure 4 As shown, the conductive structure 20 and the functional structure 60 are not connected. In other words, the conductive structure 20 and the functional structure 60 are not physically connected. This arrangement can prevent the conductive structure 20 from adversely affecting the function of the functional structure 60 or the display function.

[0043] In one embodiment, if Figure 4 As shown, the functional structure 60 includes a first electrode layer 110. The light-emitting device 10 in the display area AA includes a stacked first electrode 11, a light-emitting layer 12, and a second electrode 13; a plurality of first electrodes 11 are interconnected to form the first electrode layer 110; the first electrode layer 110 extends from the display area AA to the non-display area NA. The light-emitting device 10 is located in the display layer 50, which also includes a pixel definition layer 51. The pixel definition layer 51 is used to separate adjacent light-emitting devices 10. The array layer 40 includes a pixel circuit 41, Figure 4The figure also illustrates a simplified transistor and a pixel capacitor 411 in the pixel circuit 41, and the pixel circuit 41 is coupled to the second electrode 13. The second electrode 13 is a reflective electrode, and the first electrode 11 is a transmissive electrode. The first electrode layer 110 extends from the display area AA to the non-display area NA, and the first electrode layer 110 in the non-display area NA is not in direct contact with the conductive structure 20. In this embodiment, the conductive structure 20 can be manufactured in the same process as the first electrode layer 110, and the conductive properties of the conductive structure 20 are used to introduce charges into the conductive structure 20 to block electrostatic charges from entering the substrate 30. The embodiment of the present invention can also use the conductive structure 20 to conduct static electricity away for dispersion, prevent local accumulation of static electricity, prevent static electricity from accumulating at the cutting edge B of the substrate 30 and being unable to dissipate, thereby affecting pixels closer to the cutting edge B, and improve the phenomenon of brightening at the edge of the display area.

[0044] In addition, the manufacturing material of the first electrode layer 110 includes a metal oxide with high light transmittance. The first electrode layer 110 has good electrical conductivity and also has good corrosion resistance. If the conductive structure 20 and the first electrode layer 110 are made of the same material, the conductive structure 20 flush with the cutting edge of the substrate 30 is exposed to the outside, but is not easily corroded by water and oxygen, which can ensure the stability of the performance of the conductive structure 20. Moreover, during production, the conductive structure 20 needs to be cut together with the substrate 30. Setting the conductive structure 20 and the first electrode layer 110 to have the same material can make the thickness of the conductive structure 20 thinner, the cutting process requires less cutting energy, and the cutting accuracy can be improved.

[0045] In the embodiment of the present invention, at least a portion of the edge of the conductive structure 20 on the side away from the display area AA is flush with the cut edge B of the substrate 30. In other words, at least a portion of the edge of the conductive structure on the side away from the display area AA in a direction perpendicular to the plane of the substrate 30 overlaps with the cut edge B of the substrate 30. Therefore, at least a portion of the edge of the conductive structure 20 is exposed to the outside and may come into contact with water and oxygen in the air. In embodiments where the conductive structure 20 and the first electrode layer 110 are made of the same material, and the conductive structure 20 is disposed in the non-display area NA without contacting the first electrode layer 110, the path for water and oxygen to intrude can be blocked, preventing water and oxygen from entering the first electrode layer 110 via the conductive structure 20, thereby affecting the service life of the light-emitting device 10 in the display area AA.

[0046] In some embodiments, the second electrode 13 includes a stacked reflective layer and a metal oxide layer. The reflective layer is made of at least one of Ag, Mg, Al, Pt, Pd, Au, Ni, Nd, Ir, and Cr. The metal oxide layer is made of at least one of indium tin oxide, indium zinc oxide, zinc oxide, or indium oxide. The first electrode 11 is made of at least one of indium tin oxide, indium zinc oxide, zinc oxide, or indium oxide.

[0047] In some embodiments, Figure 5 for Figure 1 Another cross-sectional view at the midline AA′. Figure 5 As shown, the non-display area NA includes a partition structure 70, and the conductive structure 20 and the first electrode layer 110 are disconnected at the location of the partition structure 70. The first electrode layer 110 extends from the display area AA to the non-display area NA. The first electrode layer 110 is a continuous structure of the entire layer, so the mask used in the production of the first electrode layer 110 is a common mask. The opening of the common mask corresponds to the entire large area where the first electrode layer 110 needs to be formed. In the partition structure 70 of the embodiment of the present invention, the film material will naturally be disconnected at the location of the partition structure 70 during production, so that the first electrode layer 110 and the conductive structure 20 made of the same layer and material are not connected. During production, the partition structure 70 is used to isolate the first electrode layer 110 from the conductive structure 20, so that the first electrode layer 110 and the conductive structure 20 are not connected, ensuring that the performance of the first electrode layer 110 is not affected. At the same time, the precision requirements for the mask used in the production of the first electrode layer 110 are relatively low, which is conducive to reducing production costs.

[0048] Figure 5 Schematic diagram of a partition structure 70. Figure 5 As shown, the partition structure 70 includes a first sub-section 70a and a second sub-section 70b, wherein the edge of the first sub-section 70a extends beyond the edge of the second sub-section 70b to form a step. Figure 5 The first sub-section 70a and the second sub-section 70b are stacked to form a T-shaped structure, so as to separate the first electrode layer 110 and the conductive structure 20 which are manufactured in the same process. Figure 5 The middle partition structure 70 is merely a schematic representation and is not intended to limit the present invention.

[0049] In another embodiment, Figure 6 for Figure 1 Another cross-sectional view at the midline AA′. Figure 6As shown, the partition structure 70 includes a first metal segment 71. The end of the first metal segment 71 near the display area AA contacts the first electrode layer 110, and the end of the first metal segment 71 away from the display area AA contacts the conductive structure 20. In this embodiment, the partition structure 70 provides a barrier between the first electrode layer 110 and the conductive structure 20, blocking the path for water and oxygen to infiltrate the first electrode layer 110 through the conductive structure 20. The conductive structure 20 in the non-display area NA blocks static electricity from entering the substrate 30. Furthermore, the conductive structure 20 is electrically connected to the first electrode layer 110 via the first metal segment 71 in the partition structure 70, directing static electricity from the conductive structure 20 into the first electrode layer 110 for dispersion. This prevents localized static electricity accumulation and improves the phenomenon of brightening at the edges of the display area.

[0050] That is to say, Figure 6 In the embodiment, the partition structure 70 can not only physically separate the first electrode layer 110 and the conductive structure 20 from being connected, but also can realize electrical connection between the conductive structure 20 and the first electrode layer 110 by utilizing the metal portion in the partition structure 70 .

[0051] like Figure 6 As shown, the partition structure further includes a second metal section 72 and an intermediate section 73. The intermediate section 73 is located on the side of the first metal section 71 away from the substrate 30, and the second metal section 72 is located on the side of the intermediate section 73 away from the first metal section 71; wherein the second metal section 72 extends out of the edge of the intermediate section 73 to form a step (the step here can be referred to as Figure 5 (The steps in the embodiment can be understood.) In this embodiment, the conductive structure 20 located in the non-display area NA can block static electricity from entering the substrate 30, thereby preventing the static electricity entering the substrate 30 from affecting the pixels at the edge of the display area AA. In addition, the step formed by the second metal division 72 and the middle portion 73 is used to physically separate the first electrode layer 110 and the conductive structure 20, thereby blocking the path for water and oxygen to invade the first electrode layer 110 through the conductive structure 20. At the same time, the first metal division 71 can also be used to achieve electrical connection between the conductive structure 20 and the first electrode layer 110, and the static electricity of the conductive structure 20 can be introduced into the first electrode layer 110 for dispersion, thereby preventing localized accumulation of static electricity and improving the phenomenon of brightening at the edge of the display area.

[0052] Optionally, the material of the middle portion 73 includes a metal material. In one embodiment, the materials of the first metal section 71 and the second metal section 72 include titanium, and the material of the middle portion 73 includes aluminum. The partition structure 70 can be manufactured by reusing the existing metal layer in the display panel, thereby simplifying the manufacturing process.

[0053] In some embodiments, the array layer 40 includes a semiconductor layer, a first metal layer, a second metal layer, a third metal layer, and a fourth metal layer on one side of the substrate 30, which are sequentially away from the substrate 30. An insulating layer is also provided between the semiconductor layer and the first metal layer, and between two adjacent metal layers. The active layer of the transistor in the pixel circuit is located in the semiconductor layer, and the data line, scan line, light control line, reset signal line, power line, etc. in the display panel are respectively provided in the first metal layer, the second metal layer, the third metal layer, and the fourth metal layer. In one embodiment, the manufacturing material of the first metal layer and the second metal layer includes metal molybdenum, and the manufacturing material of the fourth metal layer and the third metal layer includes metal titanium and metal aluminum. The fourth metal layer and the third metal layer are both titanium / aluminum / titanium three-layer metal structures. Optionally, the partition structure 70 is manufactured in the same process as the fourth metal layer or the third metal layer.

[0054] In other embodiments, the array layer 40 includes a semiconductor layer, a first metal layer, a second metal layer, and a third metal layer, located on one side of the substrate 30 and located sequentially away from the substrate 30. Insulating layers are also provided between the semiconductor layer and the first metal layer, as well as between two adjacent metal layers. The active layer of the transistors in the pixel circuit is located in the semiconductor layer, and the data lines, scan lines, light control lines, reset signal lines, power lines, etc. in the display panel are provided in the first metal layer, the second metal layer, and the third metal layer, respectively. The first and second metal layers are made of molybdenum, and the third metal layer is made of titanium and aluminum. The third metal layer has a three-layer structure of titanium / aluminum / titanium.

[0055] In other embodiments, the partition structure 70 includes inorganic materials or organic materials. The partition structure 70 is made of insulating materials. The partition structure 70 may have similar Figure 5 The step structure shown in FIG is used to separate the first electrode layer 110 and the conductive structure 20 by using the partition structure 70.

[0056] In some embodiments, Figure 7 for Figure 1 Another cross-sectional view at the midline AA′. Figure 7As shown, the partition structure 70 includes a groove 74, and the groove 74 includes a groove bottom and a groove opening. In the direction x from the display area AA to the cutting edge B, the length L1 of the groove opening is less than the length L2 of the groove bottom. In the cross-sectional schematic diagram, the groove 74 is similar to a trapezoidal shape, and the groove bottom area of ​​the groove 74 is larger than the groove opening area. In this embodiment, the conductive structure 20 can be manufactured in the same process as the first electrode layer 110. During the manufacturing process, the film material at the position of the groove 74 will be deposited on the groove bottom, and due to the special shape of the groove 74, the film material will not be deposited on the groove wall of the groove 74, so the film material at the groove bottom and the film material on both sides of the groove opening will be discontinuous. This can also achieve that the first electrode layer 110 and the conductive structure 20 are not connected.

[0057] In some embodiments, the array layer 40 includes multiple insulating layers, and the insulating layers in the array layer 40 extend from the display area AA to the non-display area NA. The groove 74 is made using at least one insulating layer in the array layer 40 to isolate the first electrode layer 110 and the conductive structure 20.

[0058] In other embodiments, the pixel definition layer 51 extends from the display area AA to the non-display area NA, and the pixel definition layer 51 is used to form a groove 74 to separate the first electrode layer 110 and the conductive structure 20. This is not illustrated in the figure.

[0059] In another embodiment, Figure 8 for Figure 1 Another cross-sectional view at the midline AA′. Figure 8 As shown, the groove 74 is located on the substrate 30. In this embodiment, the groove 74 is made on the substrate 30 so as to separate the first electrode layer 110 and the conductive structure 20 by the groove 74.

[0060] like Figure 8 As shown, the substrate 30 includes a stacked first flexible substrate 31 and a second flexible substrate 32, and the first flexible substrate 31 is located on the side of the second flexible substrate 32 close to the array layer 40. A barrier layer 33 is also provided between the first flexible substrate 31 and the second flexible substrate 32, wherein a groove 74 runs through the first flexible substrate 31. In the prior art, it is usually necessary to manufacture a display panel on a rigid substrate, and after the display panel is manufactured, the display panel is separated from the rigid substrate. The separation process may cause certain damage to the substrate of the display panel. In the embodiment of the present invention, the substrate 30 is provided with a first flexible substrate 31 and a second flexible substrate 32, which can improve the yield rate of the process of separating the display panel from the rigid substrate. In addition, the groove 74 is made using the first flexible substrate 31 close to the side of the array layer 40, and the first electrode layer 110 and the conductive structure 20 are separated by the groove 74, while also ensuring the overall mechanical stability of the substrate 30.

[0061] In some embodiments, the barrier layer 33 is an insulating layer, and the barrier layer 33 includes at least one of silicon nitride, silicon oxide, and silicon oxynitride. The material of the first flexible substrate 31 and the material of the second flexible substrate 32 are the same.

[0062] In another embodiment, Figure 9 A schematic diagram of another display panel provided by an embodiment of the present invention, Figure 10 for Figure 9 Another cross-sectional view at the midline CC'. Figure 9 As shown, a metal line 80 is provided in the non-display area NA. The metal line 80 is provided at least halfway around the display area AA, wherein the conductive structure 20 is coupled to the metal line 80. Figure 10 As shown, the metal line 80 is located on the side of the groove 74 away from the display area AA, and the conductive structure 20 is coupled to the metal line 80. Optionally, the conductive structure 20 covers the side of the metal line 80 away from the substrate 30. In this embodiment, the metal line 80 can be used to conduct and disperse static electricity on the conductive structure 20, thereby preventing localized static electricity accumulation and improving the phenomenon of brightening at the edge of the display area.

[0063] In some embodiments, the metal line 80 is floating, or the metal line 80 is connected to a fixed potential, so that the metal line 80 can be used to conduct and disperse static electricity on the conductive structure 20 .

[0064] In one embodiment, if Figure 10 As shown, the non-display area NA further includes a first non-display area NA1, in which a plurality of pads ( Figure 10 The pads are used to bond the flexible circuit board or driver chip. The metal line 80 is routed within the non-display area NA and extends to the first non-display area NA1. Optionally, the metal line 80 is coupled to a pad providing a fixed potential within the first non-display area NA1.

[0065] In some embodiments, Figure 11 A schematic diagram of another display panel provided by an embodiment of the present invention, such as Figure 11 As shown, the display panel includes an encapsulation layer 90, which is located on the side of the light-emitting device 10 away from the substrate 30. The edge of the encapsulation layer 90 is located in the non-display area AA. A partition structure 70 is located on the edge of the encapsulation layer 90 away from the display area AA. The encapsulation layer 90 isolates water and oxygen, thereby protecting the light-emitting device 10 in the display area AA. The conductive structure 20 and the first electrode layer 110 are manufactured in the same process and separated from each other by the partition structure 70. The partition structure 70 is positioned outside the encapsulation layer 90 to block the path of water and oxygen from invading the first electrode layer 110 through the conductive structure, thereby ensuring package reliability.

[0066] In the embodiment of the present invention, the encapsulation layer 90 includes at least one inorganic layer and at least one organic layer. Figure 10 As shown, the encapsulation layer 90 includes a first inorganic layer 91, an organic layer 92, and a second inorganic layer 93. A first retaining wall 94 and a second retaining wall 95 are provided in the non-display area NA. The height of the first retaining wall 94 is less than that of the second retaining wall 95. The edge of the encapsulation layer 90 is located on the side of the second retaining wall 95 away from the display area AA.

[0067] In some embodiments, a partition structure is also provided between the edge of the encapsulation layer 90 and the display area AA, that is, a partition structure is provided within the encapsulation area to further block water and oxygen from entering the display area AA through the first electrode layer 110 .

[0068] In some embodiments, a mask used to form the first electrode layer 110 is designed to include a first opening and a second opening. The first opening is used to form the first electrode layer 110, and the second opening is used to form the conductive structure 20. By designing the mask, the unconnected first electrode layer 110 and the conductive structure 20 can be simultaneously manufactured in a single process, eliminating the need for an additional partition structure on the display panel, thereby simplifying the display panel manufacturing process.

[0069] In another embodiment, Figure 12 for Figure 1 Another cross-sectional view at the midline AA′. Figure 12 As shown, the display panel includes a power supply structure 010 located in the non-display area AA, an edge of the first electrode layer 110 is coupled to the power supply structure 010, and the power supply structure 010 and the second electrode 13 are located in the same layer; the end of the conductive structure 20 close to the display area AA is coupled to the power supply structure 010. In this embodiment, no partition structure is provided between the first electrode layer 110 and the conductive structure 20. During production, the first electrode layer 110 and the conductive structure 20 can be separately produced using different openings on the mask to achieve that the first electrode layer 110 and the conductive structure 20 are not connected. The first electrode layer 110 is coupled to the power supply structure 010. When the display panel is operating, the power supply structure 010 provides a constant power supply voltage to the first electrode layer 110. In this embodiment, the conductive structure 20 is provided to couple with the power supply structure 010, so that static electricity accumulated on the conductive structure 20 can be introduced into the power supply structure 010 and dispersed, thereby avoiding local accumulation of static electricity charge.

[0070] In some embodiments, Figure 13 for Figure 9 Another cross-sectional view at the midline CC'. Figure 13As shown, the first electrode layer 110 and the conductive structure 20 are not connected, and no partition structure is provided between the two. During production, the first electrode layer 110 and the conductive structure 20 can be produced separately using different openings on the mask to achieve the first electrode layer 110 and the conductive structure 20 being disconnected. In addition, the conductive structure 20 is coupled to the metal wire 80 in the non-display area NA. The conductive structure 20 can shield at least part of the edge area of ​​the substrate 30 on the side of the substrate 30 close to the display layer 50, and the electrostatic charge first enters the conductive structure, thereby preventing the static electricity from entering the substrate 30. In this embodiment, the metal wire 80 can also be used to conduct away the static electricity on the conductive structure 20 for dispersion, preventing local accumulation of static electricity, thereby improving the phenomenon of brightening at the edge of the display area.

[0071] In some embodiments, the metal line 80 is a crack detection line for detecting whether there is a crack in the non-display area NA.

[0072] In some embodiments, the metal line 80 is an electrostatic protection line and is grounded.

[0073] In some embodiments, Figure 9 The illustrated first non-display area NA1 includes a constant voltage terminal, which provides a constant voltage signal. The conductive structure 20 is coupled to the constant voltage terminal, and the conductive structure 20 has a constant potential. It can not only introduce static electricity into the conductive structure 20, but also use the conductive structure 20 to disperse the static electricity to prevent local accumulation of static electricity.

[0074] In another embodiment, Figure 14 for Figure 1 Another cross-sectional view at the midline AA′. Figure 14 As shown, the display panel also includes a touch layer 020, which is located on the side of the encapsulation layer 90 away from the display layer 50. The touch layer 020 includes a functional structure 60. The material of the conductive structure 20 is the same as that of the functional structure 60, and the conductive structure 20 does not contact the functional structure 60. The conductive structure 20 and the functional structure 60 in the touch layer 020 are manufactured in the same process. The functional structure 60 can be, for example, a touch electrode or a touch lead in the touch layer 020. The structure in the touch layer 020 is usually manufactured using an etching process. The mask used in the etching process is a high-precision mask, so the manufacturing accuracy can be guaranteed so that the conductive structure 20 and the functional structure 60 manufactured at the same time are not connected to each other. The conductive structure 20 is used to shield electrostatic charges to prevent static electricity from entering the substrate 30. In addition, the provision of the conductive structure 20 will not affect the performance of the functional structure 60 in the touch layer 020.

[0075] In some embodiments, Figure 15 A schematic diagram of another display panel provided by an embodiment of the present invention, such as Figure 15As shown, the touch layer 020 includes a plurality of first electrode blocks 02-1 and a plurality of second electrode blocks 02-2 located in the display area AA. The first electrode blocks 02-1 arranged along the first direction a are connected to each other to form a first touch electrode 021, and the second electrode blocks 02-2 arranged along the second direction b are connected to each other to form a second touch electrode 022. Figure 15 The two second electrode blocks 02-2 adjacent to each other in the second direction b are connected by a second connecting portion ( Figure 15 The first connecting portion and the second connecting portion are insulated and cross-connected. One of the first connecting portion and the second connecting portion is located on the same layer as the electrode block. The display panel also includes a touch lead ( Figure 15 (not shown in the figure), the touch leads include a first touch lead and a second touch lead. The first touch lead is coupled to the first touch electrode 021, and the second touch lead is coupled to the second touch electrode 022. The touch layer 020 includes a first touch conductive layer and a second touch conductive layer. The first electrode block 02-1 and the second electrode block 02-2 are located in the first touch conductive layer. One of the first connecting portion and the second connecting portion is located in the first touch conductive layer, and the other is located in the second touch conductive layer. The touch leads located in the non-display area NA adopt a double-layer conductive design, that is, the touch leads include a first subsection and a second subsection that are interconnected. The first subsection is located in the first touch conductive layer, and the second subsection is located in the second touch conductive layer.

[0076] In one embodiment, the functional structure 60 includes a first electrode block 02-1 and a second electrode block 02-2. That is, the conductive structure 20 is located in the first touch conductive layer and is manufactured in the same process as the first electrode block 02-1 and the second electrode block 02-2.

[0077] In another embodiment, the functional structure 60 includes one of the first connecting portion and the second connecting portion, and the functional structure 60 is located in the second touch conductive layer.

[0078] In some embodiments, both the first touch conductive layer and the second touch conductive layer include metal materials.

[0079] In some embodiments, both the first touch conductive layer and the second touch conductive layer include transparent conductive materials, such as indium tin oxide.

[0080] In some embodiments, Figure 16 A schematic diagram of another display panel provided by an embodiment of the present invention, such as Figure 16As shown, the display panel includes a first touch lead 85 and a second touch lead 86. The first touch lead 85 is coupled to the first touch electrode 021, and the second touch lead 86 is coupled to the second touch electrode 022. A warning line 87 is also provided around the periphery of the touch leads. This line is connected to a constant voltage signal and serves to shield the signal to prevent interference from external electrical signals on the touch leads. The conductive structure 20 is coupled to the warning line 87, which is a metal wire. This line can be used to conduct and disperse static electricity on the conductive structure 20, thereby preventing localized static electricity accumulation and improving the phenomenon of brightening at the edges of the display area.

[0081] In some embodiments, a grounding wire is provided around the periphery of the touch lead, and a conductive structure 20 is provided to couple with the grounding wire. The grounding wire can be used to conduct and disperse static electricity on the conductive structure 20, thereby preventing localized static electricity accumulation and improving the phenomenon of brightening at the edge of the display area. This is not illustrated in the figure here.

[0082] In some embodiments, Figure 17 A schematic diagram of another display panel provided by an embodiment of the present invention, such as Figure 17 As shown, the touch layer 020 includes a plurality of third touch electrodes 023 arranged in an array within the display area AA. Furthermore, a plurality of third touch leads 024 are disposed within the display area AA, and the third touch leads 024 are coupled to the third touch electrodes 023. The touch layer 020 includes a third touch conductive layer and a fourth touch conductive layer, wherein the third touch electrodes 023 are located in the third touch conductive layer, and the third touch leads 024 are located in the fourth touch conductive layer. Optionally, both the third touch conductive layer and the fourth touch conductive layer comprise transparent conductive materials.

[0083] In one embodiment, the functional structure 60 includes the third touch electrode 023 , the conductive structure 20 is located in the third touch conductive layer, and the conductive structure 20 and the third touch electrode 023 are manufactured in the same process.

[0084] In another embodiment, the functional structure 60 includes a third touch wire 024 , the conductive structure 20 is located in the fourth touch conductive layer, and the conductive structure 20 and the third touch wire 024 are manufactured in the same process.

[0085] In some embodiments, the array layer 40 includes a functional structure 60, and the conductive structure 20 is made of the same layer and the same material as the functional structure 60 in the array layer 40. Optionally, the material of the conductive structure 20 includes a metal material. Figure 6 In the embodiment, the array layer 40 of the display panel includes multiple metal layers. The conductive structure 20 can be manufactured by reusing any metal layer in the array layer 40 .

[0086] If the conductive structure 20 includes a metal material, at least a portion of the cutting edge B of the substrate 30 overlaps with the metal material in a direction perpendicular to the plane of the substrate 30. In other words, at least a portion of the cutting edge B of the substrate 30 is covered by the metal material. The metal material has excellent conductive properties, which can increase the electrostatic transmission path at the cutting edge B and avoid the accumulation of static electricity at the cutting edge B.

[0087] In some embodiments, as Figure 2 、 Figure 4 or Figure 5 As shown, the conductive structure 20 contacts the surface of the substrate 30 at at least one end away from the display area AA. That is, there is no insulating layer in the edge region of the substrate 30, and the insulating layer in the array layer 40 does not extend to the cutting edge B of the substrate 30. Alternatively, the edge of the insulating layer in the array layer 40 is not flush with the cutting edge B of the substrate 30. Removing the insulating layer at the cutting edge B can reduce the cutting thickness during the cutting process. In this embodiment, when cutting the display panel along the predetermined cutting line, only the substrate 30 and the conductive structure 20 need to be cut, which requires less cutting energy and improves cutting accuracy.

[0088] In some embodiments, as Figure 4 As shown, the array layer 40 includes a plurality of insulating layers 42. The edges of the insulating layers 42 in the non-display area NA are not flush with the cutting edges of the substrate 30. Figure 4 It is shown in the figure that each insulating layer 42 is located on the side of the conductive structure 20 close to the display area AA at the edge of the non-display area NA. That is to say, the insulating layer 42 located in the edge area of ​​the display panel is removed in the non-display area NA. When the display panel is cut along the preset cutting line, there is no need to cut the insulating layer 42, which can reduce the cutting thickness in the cutting process. In addition, in this embodiment, all the conductive structures 20 can be in contact with the surface of the substrate 30, and the conductive structure 20 is made on a relatively flat surface to ensure the overall continuity of the conductive structure 20. Moreover, the contact area between the conductive structure 20 and the substrate 30 is large, and the charge entering the substrate 30 can be quickly introduced into the conductive structure 20.

[0089] In some embodiments, Figure 18 A partial schematic diagram of another display panel provided by an embodiment of the present invention is shown in FIG. Figure 18As shown, the end of the conductive structure 20 near the display area AA includes a first tip structure 21, and the display panel also includes a second tip structure 22 located in the non-display area NA. The tip of the first tip structure 21 and the tip of the second tip structure 22 are opposite to each other. The shape of the conductive structure 20 is designed so that the first tip structure 21 can accumulate static electricity generated at the edge of the display panel. The tip of the first tip structure 21 and the tip of the second tip structure 22 are arranged to be opposite to each other so that static electricity can be released to the second tip structure 22. The second tip structure 22 is made of a metal material. Optionally, the material of the second tip structure 22 is the same as that of the conductive structure 20, and the second tip structure 22 is arranged to float, which can prevent static electricity from breaking down the active circuit when it is released. In addition, the conductive structure 20 is coupled to the ground wire 89 via a connecting wire 88 to achieve grounding of the conductive structure 20. Static electricity entering the conductive structure 20 can be transferred to the ground wire 89 through the connecting wire 88 and conducted away, preventing static electricity from accumulating or gathering on the conductive structure 20.

[0090] In some embodiments, as Figure 18 As shown, the grounding line 89 has an opening 89 v , and the opening 89 v passes through the grounding line 89 in a direction perpendicular to the plane of the substrate 30 .

[0091] In addition, if Figure 18 As shown, in addition to the grounding line 89, the non-display area NA is also provided with an anti-crack trench 030 and a retaining wall 080. Among them, the anti-crack trench 030 is located on the side of the grounding line 89 close to the display area AA. The number of anti-crack trenches 030 is only for schematic representation and is not intended to limit the present invention. The anti-crack trench 030 is used to prevent cracks on the insulating layer from extending toward the display area AA, thereby preventing defects such as wiring breakage caused by cracks. The retaining wall 080 is used to define the edge of the encapsulation layer of the display panel, combined with the Figure 11 The embodiment is understood that the retaining wall 080 can be the above Figure 11 The second retaining wall 95 shown in the embodiment.

[0092] In some embodiments, Figure 19 for Figure 1 Another cross-sectional view at the midline AA′. Figure 19As shown, the display panel includes an anti-crack trench 030 located in the non-display area NA; in a direction e perpendicular to the plane of the substrate 30, at least a portion of the conductive structure 20 overlaps with the anti-crack trench 030. In this embodiment of the present invention, at least a portion of the edge of the conductive structure 20 on the side away from the display area AA is flush with the cut edge B of the substrate 30, while at least a portion of the edge of the conductive structure 20 on the side close to the display area AA overlaps with the anti-crack trench 030. In other words, the conductive structure 20 extends from the cut edge B of the substrate 30 toward the display area AA to the location of the anti-crack trench 030. This allows the conductive structure 20 disposed in the non-display area NA to have a larger width and, accordingly, a larger area. This results in a lower overall impedance of the conductive structure 20, allowing charges to be quickly introduced into the conductive structure 20, preventing static electricity from accumulating at the cut edge of the substrate 30 and failing to dissipate, thereby affecting pixels closer to the cut edge B. This improves the phenomenon of brightening at the edge of the display area.

[0093] like Figure 19 As shown, array layer 40 includes a semiconductor layer 041, a first metal layer 042, a second metal layer 043, and a third metal layer 044. The insulating layers disposed between semiconductor layer 041 and first metal layer 042, between first metal layer 042 and second metal layer 043, and between second metal layer 043 and third metal layer 044 are all inorganic insulating layers 42-2. An organic insulating layer 42-1 is also disposed on the side of third metal layer 044 away from substrate 30. Both inorganic insulating layer 42-2 and organic insulating layer 42-1 are included in insulating layer 42 of array layer 40. Anti-crack trench 030 penetrates inorganic insulating layer 42-2 of array layer 40.

[0094] Figure 19 Only two anti-crack grooves 030 are schematically shown, and the embodiment of the present invention does not limit the number of the anti-crack grooves 030.

[0095] like Figure 19 As shown, the crack prevention trench 030 is filled with a filling medium 031 , and the conductive structure 20 is in contact with the filling medium 031 at a side of the filling medium 031 away from the substrate 30 . Figure 19 The figure also illustrates that the edges of the insulating layers 42 in the array layer 40 within the non-display area NA are not flush with the cut edge B of the substrate 30. The conductive structure 20 overlies the edge slope formed by the inorganic insulating layer 42-2 and extends to the side of the filling dielectric 031 away from the substrate 30, where it contacts the filling dielectric 031. The conductive structure 20 extends from the cut edge B of the substrate 30 toward the display area AA to the location of the crack prevention trench 030. This results in a larger width and a larger area for the conductive structure 20 within the non-display area NA, resulting in a lower overall impedance.

[0096] In another embodiment, the edge of the inorganic insulating layer 42-2 in the array layer 40 is flush with the cutting edge B of the substrate 30, and in the direction e perpendicular to the plane of the substrate 30, at least part of the conductive structure 20 and the anti-crack groove 030 overlap, which is not illustrated here.

[0097] In some embodiments, the filling medium 031 in the crack prevention trench 030 includes an organic material.

[0098] In some embodiments, the medium 031 filled in the crack prevention groove 030 includes a metal material. In this embodiment, when the display panel is cut along a predetermined cutting line, the metal material deposited in the crack prevention groove 030 can be used as an auxiliary alignment mark. The metal material deposited in the crack prevention groove 030 cooperates with the alignment mark to achieve cutting alignment.

[0099] In some embodiments, Figure 20 for Figure 1 Another cross-sectional view at the midline AA′. Figure 20 As shown, the conductive structure 20 is partially filled in the crack prevention groove 030. This configuration can increase the area of ​​the conductive structure 20, reduce the impedance of the conductive structure 20, and quickly introduce charges into the conductive structure 20, preventing static electricity from accumulating at the cut edge of the substrate 30 and affecting pixels closer to the cut edge B. This improves the phenomenon of brightening at the edge of the display area.

[0100] In another embodiment, Figure 21 A schematic diagram of another display panel provided by an embodiment of the present invention, such as Figure 21 As shown, the conductive structure 20 is arranged semi-circumferentially around the display area AA, and the conductive structure 20 in the non-display area NA is a continuous structure. This arrangement ensures that the conductive structure 20 can block static electricity at the cut edges of the substrate 30 in all different directions, preventing static electricity from entering the substrate 30 through the cut edges. This prevents static electricity from accumulating at the cut edges of the substrate 30 and affecting pixels closer to the cut edges B, thereby improving the phenomenon of brightening at the edges of the display area.

[0101] Based on the same inventive concept, an embodiment of the present invention further provides a display device, Figure 22 A schematic diagram of a display device provided by an embodiment of the present invention, such as Figure 22 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 embodiment and will not be repeated here. The display device provided by the embodiment of the present invention can be any device with a display function, such as a mobile phone, tablet computer, laptop computer, television, smart watch, etc.

[0102] 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.

[0103] 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 display area and a non-display area; The display panel includes a substrate and a conductive structure located on one side of the substrate, wherein the conductive structure is located in the non-display area; along a direction perpendicular to the plane of the substrate, at least a portion of an edge of the conductive structure away from the display area overlaps with a cut edge of the substrate; The display area includes a plurality of light-emitting devices located on one side of the substrate, the light-emitting devices including a stacked first electrode, a light-emitting layer, and a second electrode; the plurality of first electrodes are interconnected to form a first electrode layer; the first electrode layer extends from the display area to the non-display area; and the functional structure includes the first electrode layer; The non-display area includes a partition structure, the conductive structure and the first electrode layer are disconnected at the location of the partition structure, and the partition structure includes a first metal segment, an end of the first metal segment close to the display area contacts the first electrode layer, and an end of the first metal segment away from the display area contacts the conductive structure; and / or, The display panel includes a power supply structure located in the non-display area, the edge of the first electrode layer is coupled to the power supply structure, and the power supply structure and the second electrode are located in the same layer; one end of the conductive structure close to the display area is coupled to the power supply structure.

2. The display panel according to claim 1, wherein: The display panel includes a functional structure located on the same side of the substrate as the conductive structure, and at least a portion of the functional structure is located in the display area; The material of the conductive structure is the same as that of the functional structure.

3. The display panel according to claim 2, wherein: The conductive structure and the functional structure are not connected.

4. The display panel according to claim 1, wherein: The partition structure also includes a second metal division and a middle portion, the middle portion is located on a side of the first metal division away from the base, and the second metal division is located on a side of the middle portion away from the first metal division; the second metal division extends out of the edge of the middle portion to form a step.

5. The display panel according to claim 1, wherein: The partition structure includes a groove, and the groove includes a groove bottom and a groove opening; in a direction from the display area to the cutting edge, the length of the groove opening is smaller than the length of the groove bottom.

6. The display panel according to claim 5, wherein: The groove is located on the base.

7. The display panel according to claim 5, wherein: A metal line is provided on a side of the groove away from the display area; and the conductive structure is coupled to the metal line.

8. The display panel according to claim 7, wherein: The metal line is floating, or the metal line is connected to a fixed potential.

9. The display panel according to claim 1, wherein: The display panel includes an encapsulation layer, the encapsulation layer is located on a side of the light-emitting device away from the substrate, and an edge of the encapsulation layer is located in the non-display area; The partition structure is located on a side of the edge of the encapsulation layer away from the display area.

10. The display panel according to claim 1, wherein The non-display area includes a metal line, and the metal line is arranged to at least half surround the display area; the conductive structure is coupled to the metal line.

11. The display panel according to claim 2, wherein: The display panel further includes a touch layer, and the touch layer includes the functional structure.

12. The display panel according to claim 1, wherein The non-display area includes a constant voltage terminal, and the conductive structure is coupled to the constant voltage terminal.

13. The display panel according to claim 1, wherein: The conductive structure contacts the surface of the substrate at least at one end away from the display area.

14. The display panel according to claim 1, wherein The display panel includes an array layer located on one side of the substrate, the array layer includes a plurality of pixel circuits and a plurality of insulating layers; the insulating layer is not flush with a cut edge of the substrate at an edge of the non-display area.

15. The display panel according to claim 1, wherein One end of the conductive structure close to the display area includes a first tip structure; The display panel further includes a second tip structure located in the non-display area, and a tip of the first tip structure is opposite to a tip of the second tip structure.

16. The display panel according to claim 1, wherein The display panel includes a crack prevention groove located in the non-display area; In a direction perpendicular to the plane of the substrate, at least a portion of the conductive structure and the crack prevention groove overlap.

17. The display panel according to claim 16, wherein: The crack prevention trench is filled with a filling medium, and the conductive structure is in contact with the filling medium at a side of the filling medium away from the substrate.

18. The display panel according to claim 17, wherein: The filling medium includes organic material and / or metallic material.

19. The display panel according to claim 16, wherein: Part of the conductive structure is filled in the crack prevention groove.

20. The display panel according to claim 1, wherein The substrate includes a first flexible substrate and a second flexible substrate that are stacked.

21. The display panel according to claim 1, wherein The conductive structure is made of a material including metal or metal oxide.

22. A display device, characterized in that: A display panel comprising any one of claims 1 to 21.

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