DISPLAY PANEL, DISPLAY DEVICE AND PORTABLE DEVICE

Abstract

The present application provides a display panel, a display device, and a portable device related to the field of display technology. The display panel comprises a display area (AA) and a peripheral area (BB) surrounding the display area (AA).The display panel further comprises: a substrate (1) and a plurality of light-emitting elements (Q) arranged in an array on the substrate (1) and located at least in the display region (AA); a conductive layer (3) comprising a cathode ring (31) and cathodes of the light-emitting elements (Q), wherein the cathode ring (31) is located in the peripheral region (BB) and surrounds the display region (AA); and a lens layer (2) located on a side of the light-emitting elements (Q) remote from the substrate (1) and extending from the display region (AA) to the peripheral region (BB), wherein an orthographic projection of the lens layer (2) on the substrate (1) is located within a region delimited by an outer contour of an orthographic projection of the cathode ring (31) on the substrate (1). Therefore, the display panel has a good display effect, high product quality, and good reliability.

Description

Technical area

[0001] The present application relates to the field of display technology and, more particularly, to a display panel, a display device and a portable device. State of the art

[0002] With the continuous development of display technology, silicon-based OLED (organic light-emitting diode) display products have attracted considerable attention due to their advantages such as high resolution, low power consumption, small size, and light weight. They have good application prospects in industries requiring high-resolution near-eye displays, such as wearable devices, industrial security, and healthcare. Disclosure of the invention

[0003] The embodiments of this application adopt the following technical solutions: According to a first aspect, embodiments of the present application provide a display panel comprising a display area and a peripheral area surrounding the display area; the display panel further comprises: a substrate and a plurality of light-emitting elements arranged in an array on the substrate, the light-emitting elements being located at least in the display area; a conductive layer comprising a cathode ring and cathodes of the light-emitting elements, the cathode ring being located in the peripheral region and surrounding the display region; a lens layer located on a side of the light-emitting elements remote from the substrate and extending from the display area to the peripheral area; wherein an orthographic projection of the lens layer on the substrate is located within a region delimited by an outer contour of an orthographic projection of the cathode ring on the substrate.

[0004] In a display panel according to embodiments of the present application, the orthographic projection of the lens layer on the substrate is located within a region delimited by an inner contour of an orthographic projection of the cathode ring on the substrate, and an outer contour of the orthographic projection of the lens layer on the substrate is located in the peripheral region.

[0005] In a display panel according to embodiments of the present application, the outer contour of the orthographic projection of the lens layer on the substrate overlaps with the inner contour of the orthographic projection of the cathode ring on the substrate.

[0006] In a display panel according to embodiments of the present application, a gap is provided between the outer contour of the orthographic projection of the lens layer on the substrate and the inner contour of the orthographic projection of the cathode ring on the substrate.

[0007] In a display panel according to embodiments of the present application, the dimension of the gap in a direction from the display area to the peripheral area is less than or equal to a width of the cathode ring in the direction from the display area to the peripheral area.

[0008] In a display panel according to embodiments of the present application, the dimension of the gap in the direction from the display area to the peripheral area is greater than or equal to a dimension of one of the light-emitting elements in the direction from the display area to the peripheral area.

[0009] In a display panel according to embodiments of the present application, a portion of the light-emitting elements is located in the peripheral region, and all light-emitting elements located in the peripheral region are arranged in a circle along the edges of the display region. The orthographic projection of the cathode ring on the substrate is located on a side of the orthographic projections of all light-emitting elements located in the peripheral region on the substrate, remote from the display region; wherein the orthographic projections of all light-emitting elements located in the peripheral region on the substrate lie within the orthographic projection of the lens layer on the substrate.

[0010] In a display panel according to embodiments of the present application, the peripheral region comprises a first peripheral portion, a second peripheral portion, a third peripheral portion, and a fourth peripheral portion, wherein the fourth peripheral portion is arranged opposite the first peripheral portion, the second peripheral portion is arranged opposite the third peripheral portion, and the fourth peripheral portion comprises a binding terminal; a width of a part of the cathode ring located in the fourth circumferential sub-region in a direction from the display region to the circumferential region is less than or equal to the width of a part of the cathode ring located in the circumferential region, excluding the fourth circumferential sub-region, in the direction from the display region to the circumferential region.

[0011] In a display panel according to embodiments of the present application, the width of the part of the cathode ring located in the fourth circumferential sub-region in a direction from the display region to the circumferential region is smaller than the width of a part of the cathode ring located in the first circumferential sub-region in a direction from the display region to the circumferential region.

[0012] In a display panel according to embodiments of the present application, a graph of the orthographic projection of the lens layer on the substrate comprises a first side edge and a second side edge arranged opposite one another, and an inner contour of a graph of the orthographic projection of the cathode ring on the substrate comprises a first edge and a second edge arranged opposite one another, wherein the first side edge and the first edge lie in the second circumferential partial region, the second side edge and the second edge lie in the third circumferential partial region; a minimum distance between the first page edge and the first edge differs from a minimum distance between the second page edge and the second edge.

[0013] In a display panel according to embodiments of the present application, a graph of the orthographic projection of the lens layer on the substrate comprises a first side edge and a second side edge arranged opposite one another, and an inner contour of a graph of the orthographic projection of the cathode ring on the substrate comprises a first edge and a second edge arranged opposite one another, wherein the first side edge and the first edge lie in the second circumferential partial region, the second side edge and the second edge lie in the third circumferential partial region; a minimum distance between the first side edge and the first edge is equal to a minimum distance between the second side edge and the second edge; a width of a part of the cathode ring located in the second circumferential sub-region in the direction from the display region to the circumferential region is different from a width of a part of the cathode ring located in the third circumferential sub-region in the direction from the display region to the circumferential region.

[0014] In a display panel according to embodiments of the present application, a graph of the orthographic projection of the lens layer on the substrate comprises a first side edge and a second side edge arranged opposite one another, and an inner contour of a graph of the orthographic projection of the cathode ring on the substrate comprises a first edge and a second edge arranged opposite one another, wherein the first side edge and the first edge lie in the second circumferential partial region, the second side edge and the second edge lie in the third circumferential partial region; a minimum distance between the first side edge and the first edge is equal to a minimum distance between the second side edge and the second edge; a width of a part of the cathode ring located in the second circumferential sub-region in the direction from the display region to the circumferential region is equal to a width of a part of the cathode ring located in the third circumferential sub-region in the direction from the display region to the circumferential region.

[0015] In a display panel according to embodiments of the present application, the lens layer comprises a plurality of first lenses and a plurality of second lenses, wherein all the first lenses are arranged in the display region and all the second lenses are arranged in the peripheral region;

[0016] a height of each of the second lenses in a direction perpendicular to a plane in which the substrate is located is less than or equal to a height of each of the first lenses in the direction perpendicular to the plane in which the substrate is located.

[0017] In a display panel according to embodiments of the present application, the height of each of the second lenses gradually decreases in the direction perpendicular to the plane in which the substrate is located, in a direction from the display region to the peripheral region.

[0018] In a display panel according to embodiments of the present application, the shapes of graphs of orthographic projections of the second lenses on the substrate comprise ellipses, and the extending directions of the long axes of at least a part of the ellipses in the peripheral region are different.

[0019] In a display panel according to embodiments of the present application, the shapes of graphs of orthographic projections of the first lenses on the substrate comprise ellipses, and the extending directions of the long axes of at least a part of the ellipses in the display area are the same.

[0020] In a display panel according to embodiments of the present application, the structures and dimensions of the first lenses located on one side of a connecting line of the display area and the peripheral area are the same as the structures and dimensions of the second lenses located on the other side of the connecting line.

[0021] In a display panel according to embodiments of the present application, the shapes of orthographic projection graphs of the first lenses and the second lenses on the substrate both comprise ellipses, and the extending directions of the long axes of the orthographic projection graphs of the first lenses located on one side of the connecting line are the same as the extending directions of the long axes of the orthographic projection graphs of the second lenses located on the other side of the connecting line.

[0022] In a display panel according to embodiments of the present application, the display panel comprises a first encapsulation layer, a color filter layer, and a second encapsulation layer arranged in sequence, wherein the first encapsulation layer covers the light-emitting elements and the cathode ring, the second encapsulation layer is located between the color filter layer and the lens layer, and the second encapsulation layer further extends to the peripheral region; a roughness of at least a portion of a surface of the second encapsulation layer remote from the substrate is greater than a roughness of a surface of the first encapsulation layer remote from the substrate.

[0023] In a display panel according to embodiments of the present application, the roughness of at least a portion of a surface of the second encapsulation layer remote from the substrate is greater than or equal to ten times the roughness of the surface of the first encapsulation layer remote from the substrate.

[0024] In a display panel according to embodiments of the present application, the display panel further comprises an adhesive layer and a cover plate, wherein the adhesive layer is located on a side of the lens layer remote from the substrate, and the cover plate is located on a side of the adhesive layer remote from the lens layer. An orthographic projection of the adhesive layer on the substrate lies within an orthographic projection of the second encapsulation layer on the substrate, and the adhesive layer is in direct contact with a portion of the second encapsulation layer and the lens layer, respectively.

[0025] In a display panel according to embodiments of the present application, an area of ​​a region in direct contact with the second encapsulation layer of a part of the adhesive layer located in the fourth peripheral portion is greater than or equal to an area of ​​a region in direct contact with the second encapsulation layer of a part of the adhesive layer located in the first peripheral portion.

[0026] In a display panel according to embodiments of the present application, the display panel further comprises a light-shielding layer, wherein the light-shielding layer is located in the peripheral region and surrounds the display region, and wherein the light-shielding layer and the color filter layer are arranged in the same layer; the orthographic projection of the cathode ring on the substrate lies within an orthographic projection of the light-shielding layer on the substrate; the outer contour of the orthographic projection of the lens layer on the substrate falls within a region in which an orthographic projection of the light-shielding layer on the substrate is located, and an orthographic projection of an outer contour of the light-shielding layer on the substrate lies within an orthographic projection of the cover plate on the substrate.

[0027] In a display panel according to embodiments of the present application, a shape of a graph of the orthographic projection of the cathode ring on the substrate comprises polygons with rounded corners.

[0028] In a display panel according to embodiments of the present application, the display panel further comprises a plurality of positive electrodes located in the peripheral region, and the positive electrodes and anodes of the light-emitting elements are arranged in the same layer; wherein the positive electrodes are electrically connected to the anodes and the positive electrodes are in direct contact with the cathode ring.

[0029] According to a second aspect, embodiments of the present application provide a display device comprising a display panel according to the first aspect.

[0030] According to a third aspect, embodiments of the present application provide a portable device comprising two display devices according to the second aspect.

[0031] The above description is merely a summary of the technical solutions of the present application. To more clearly understand the technological means of the present application, it can be implemented according to the contents of the specification. To make the above and other purposes, features, and advantages of the present application clearer and more understandable, the detailed embodiments of the present application are provided below. Description of the drawings

[0032] To more clearly illustrate the technical solutions of the embodiments of the present application or the related art, the figures necessary for describing the embodiments or the prior art are briefly described below. Obviously, the figures described below are only embodiments of the present application, and those skilled in the art can obtain other figures based on these figures without creative effort. Fig. 1 to Fig. 5 are schematic plan views of five types of display panels according to embodiments of the present application; Fig. 6 is a part of the schematic cross-sectional view along an M1M2 direction in Fig. 5 according to embodiments of the present application; Fig. 7 to Fig. 12 and Fig. 15 are schematic plan views of further seven types of display panels according to embodiments of the present application; Fig. 13 is another schematic cross-sectional view along the M1M2 direction in Fig. 5 according to embodiments of the present application; Fig. 14 is another schematic cross-sectional view along the M1M2 direction in Fig. 5 according to embodiments of the present application; and Fig. 16 is a schematic representation of a partial structure of a cathode ring according to embodiments of the present application. Detailed examples

[0033] The technical solutions according to the embodiments of the present application are described clearly and completely below with reference to the drawings according to the embodiments of the present application. It is obvious that the described embodiments represent only a part and not all of the embodiments of the present application. Starting from the embodiments in the present application, all other embodiments that a person skilled in the art can arrive at without creative effort also fall within the scope of the present application.

[0034] Unless the context requires otherwise, throughout the specification and claims, the term "comprising" is interpreted as broad and inclusive, meaning "including, but not limited to." In the discussion of the specification, the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples," and the like, are intended to indicate that certain features, structures, materials, or properties associated with that embodiment or example are included in at least one embodiment or example of the present application. The schematic representations of the above terms do not necessarily refer to the same embodiment or example.Furthermore, the particular features, structures, materials, or properties mentioned may be included in any suitable manner in one or more embodiments or examples.

[0035] Furthermore, it should be noted that in introducing the elements and their embodiments of the present application, the articles "a," "one," "this," and "the" are intended to indicate the existence of one or more elements. Unless otherwise noted, "a plurality of" means two or more; the terms "include," "comprise," "include," and "have" are intended to be inclusive and mean that there may be additional elements besides those listed; the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying a relative importance or order of formation.

[0036] In this specification, the term "electrical connection" refers to a situation where components are connected to each other via an element with a specific electrical effect. There are no specific restrictions on "an element with a specific electrical effect" as long as it can transmit and receive electrical signals between the connected components. Examples of "an element with a specific electrical effect" include not only electrodes and wiring, but also switching elements such as transistors, resistors, inductors, capacitors, and other elements with various functions.

[0037] Polygons in this specification are not strictly defined, but can be approximately triangles, rectangles, trapezoids, pentagons, or hexagons, etc. Some small distortions caused by tolerances may occur, and there may be chamfers, fillets, scalloped edges, and deformations, etc.

[0038] With the continuous development of display technology, silicon-based OLED (organic light-emitting diode) display products are characterized by their small size and high resolution. Their backplane is manufactured using mature CMOS (complementary metal oxide semiconductor) integrated circuit technology, enabling active pixel addressing and various circuits such as TCON (timer control register) and OCP (overcurrent protection), thus achieving a lightweight design. These silicon-based OLED display products are widely used in near-eye display, virtual reality (VR), and augmented reality (AR).

[0039] To this end, embodiments of the present application provide a newly developed display panel, display device, and wearable device to improve the product reliability of silicon-based display devices, extend their service life, expand the usage scenarios of silicon-based display products, and thus enable their deeper application in industries with high-resolution near-eye displays, such as wearable devices, industrial security, and healthcare. The display panel includes a display area and a peripheral area surrounding the display area.The display panel further comprises: a substrate and a plurality of light-emitting elements arranged in an array on the substrate, wherein the light-emitting elements are located at least in the display region; a conductive layer comprising a cathode ring and cathodes of the light-emitting elements, wherein the cathode ring is located in the peripheral region and surrounds the display region; a lens layer located on a side of the light-emitting elements remote from the substrate and extending from the display region to the peripheral region; wherein an orthographic projection of the lens layer on the substrate is located within a region delimited by an outer contour of an orthographic projection of the cathode ring on the substrate.Due to the unevenness of the surfaces of the lens layer, in the subsequent cover plate bonding process, by adjusting the orthographic projection of the lens layer on the substrate within the range defined by the outer contour of the orthographic projection of the cathode ring on the substrate, a contact area between the adhesive material and the lens layer can be reduced and a contact area between the adhesive material and the flat area can be increased, thereby improving the adhesive force and adhesive stability, improving the quality of the display panel, and prolonging its service life.

[0040] Exemplary embodiments will now be described in more detail with reference to the accompanying drawings.

[0041] The embodiments of the present application provide a display panel. Fig. 1 to Fig. 5 are schematic plan views of five types of display panels according to embodiments of the present application; Fig. 6 is a part of the schematic cross-sectional view along an M1M2 direction in Fig. 5 according to an embodiment of the present application; Fig. 7 to Fig. 12 and Fig. 15 are schematic plan views of further seven types of display panels according to embodiments of the present application; Fig. 13 is another schematic cross-sectional view along the M1M2 direction in Fig. 5 according to an embodiment of the present application; Fig. 14 is another schematic cross-sectional view along the M1M2 direction in Fig. 5 according to an embodiment of the present application. It should be noted that Fig. 1 to Fig. 5, Fig. 7 to Fig. 12 and Fig. 15 all emphasize the planar distribution of the substructure in the peripheral area BB of the display panel, without showing a complete plan view of the display panel. Fig. 6, Fig. 13 and Fig. 14 do not show the complete layer structure of the display panel, and the layer structure not shown can be seen in the related art.

[0042] As in Fig. 1 to Fig. As shown in Figure 5, the display field includes the display area AA and the peripheral area (not marked) surrounding the display area AA.

[0043] As in Fig. 6 , Fig. 13 or Fig. 14, the display panel further comprises: the substrate 1 and the plurality of light-emitting elements Q arranged in an array on the substrate 1, wherein the light-emitting elements Q are located at least in the display area AA; the conductive layer 3 comprising the cathode ring 31 and cathodes of the light-emitting elements Q, wherein the cathode ring 31 is located in the peripheral area BB and the cathode ring 31 surrounds the display area AA; and the lens layer 2 located on a side of the light-emitting elements Q remote from the substrate 1 and extending from the display area AA to the peripheral area BB; wherein an orthographic projection of the lens layer 2 on the substrate 1 is located within a region delimited by an outer contour of an orthographic projection of the cathode ring 31 on the substrate 1.

[0044] It should be noted that Fig. 6, Fig. 13 or Fig. 14 illustrates only the left side of the cross-sectional view. In combination with the Fig. 1 to Fig. 5 shows that the area delimited by the outer contour of the orthographic projection of the cathode ring 31 on the substrate 1 is a closed area.

[0045] In Fig. 6, Fig. 13 or Fig. 14, the display panel comprises the substrate 1 and a plurality of subpixels located on the substrate 1, wherein the subpixels comprise a light-emitting element Q and a color conversion layer located on a light-exit side of the light-emitting element Q. Each light-emitting element Q comprises a light-emitting functional layer 10 and a first electrode and a second electrode located on both sides of the light-emitting functional layer 10, wherein one of the first and second electrodes is an anode and the other is a cathode.In the case where the first electrode is the anode and the second electrode is the cathode, the first electrode is located between the light-emitting functional layer 10 and the substrate 1, and at least a part of the second electrode is located on a side of the light-emitting functional layer 10 remote from the first electrode; that is, the first electrode and the second electrode are located on both sides in the direction perpendicular to the light-emitting functional layer 10. The light-emitting functional layer 10 includes not only a film layer that directly emits light but also a functional film layer for assisting light emission, such as a hole-transport layer, an electron-transport layer, and so on.

[0046] It should be noted that in the drawings according to embodiments of the present application, the light-emitting functional layers 10 of the light-emitting elements Q are drawn contiguously for the sake of simplicity. In practical applications, the light-emitting functional layers 10 of the light-emitting elements Q can be connected to one another if the emission colors of the light-emitting elements Q are the same. If the emission colors of the light-emitting elements Q are not exactly the same, the light-emitting functional layers 10 of the light-emitting elements Q can be arranged separately, for example by being separated by pixel definition layers (in Fig. 6 not shown) to avoid color crosstalk between the subpixels.

[0047] In the case where the first electrode is the anode and the second electrode is the cathode, the plurality of light-emitting elements Q can share the second electrode. For example, the cathode can be made of materials with high conductivity and low work function, for example, the cathode can be made of metal materials. For example, the anode can be made of transparent conductive materials with a high work function.

[0048] In some examples, the material of substrate 1 may include one or more of the following materials: glass, polyimide, polycarbonate, polyacrylate, polyetherimide, and polyethersulfone. This embodiment includes, but is not limited to, these materials.

[0049] In some examples, the substrate 1 may be a rigid substrate or a flexible substrate. When the substrate 1 is the flexible substrate, the substrate 1 may comprise a single layer of flexible material. Alternatively, the substrate 1 may comprise a first flexible material layer, a first inorganic non-metallic material layer, a second flexible material layer, and a second inorganic non-metallic material layer arranged in a sequentially stacked manner. The first flexible material layer and the second flexible material layer are made of materials such as polyimide (PI), polyethylene terephthalate (PET), or surface-treated soft polymer film, etc. The first inorganic non-metallic material layer and the second inorganic non-metallic material layer are made of materials such as silicon nitride (SiNx) or silicon oxide (SiOx), etc., to improve the water-oxygen resistance of the base plate of the substrate.The first inorganic non-metallic material layer and the second inorganic non-metallic material layer are also called barrier layer.

[0050] When the substrate 1 is the rigid substrate, the substrate 1 may be a glass substrate or a silicon material substrate. When the substrate 1 is the silicon material substrate, multiple conductive material layers and multiple insulating material layers may be disposed between the substrate 1 and the light-emitting elements Q to form a driver circuit and a pixel circuit. Here, the substrate 1, as well as the driver circuit and the pixel circuit located on the substrate 1, may collectively be referred to as a driver backplane. The driver backplane may be a field-effect transistor (MOS) driver backplane, wherein the individual metal layers in the MOS driver backplane are separated by insulating layers (such as a first insulating layer 8 and a second insulating layer 9) and electrically connected by tungsten vias (W vias).

[0051] The silicon material substrate may be a P-type monocrystalline silicon substrate or an N-type monocrystalline silicon substrate, which can be determined based on the actual product. Note that the embodiments of the present application are explained using the example of the display panel, which is a silicon material substrate.

[0052] In some examples, other film layers may also be disposed between the substrate 1 and the light-emitting elements Q. These other film layers may include gate insulating layers, interlayer insulating layers, various film layers in the pixel circuit (e.g., including structures such as thin-film transistors and storage capacitors, etc.), data lines, gate lines, power signal lines, reset power signal lines, reset control signal lines, light-emitting control signal lines, and other film layers or structures.

[0053] The fact that the light-emitting elements Q are located at least in the display area AA includes, in some examples, but is not limited to, the following situations: First, the light-emitting elements Q are located in the display area AA;

[0054] Secondly, the light-emitting elements Q are located as in Fig. 6, Fig. 13 or Fig. 14, not only in the display area AA, but also extend from the display area AA to a dummy area in the peripheral area BB.

[0055] It should be noted that the light-emitting elements Q arranged in the display area AA can emit and display light, while the light-emitting elements Q arranged in the dummy area in the peripheral area BB cannot emit and display light. The light-emitting elements Q arranged in the dummy area in the peripheral area BB are used to improve the structural consistency of the display area AA and the peripheral area BB of the display panel, thereby avoiding color differences visible to the naked eye at the junction between the display area AA and the peripheral area BB due to significant structural differences in the dark state of the display panel, and forming a natural transition between the display area AA and the peripheral area BB. As a result, the aesthetics of the display panel are improved.

[0056] As in Fig. 6, Fig. 13 or Fig. As shown in Figure 14, the light-emitting functional layer 10 and the anode of the light-emitting element Q located in the display area AA are conductively connected to each other, while an insulating material is provided between the light-emitting functional layer 10 and the anode of the light-emitting element Q located in the dummy area of ​​the peripheral area BB, so that they are non-conductive. For example, the anode of the light-emitting element Q located in the dummy area of ​​the peripheral area BB is covered with the insulating material, so that the sides of the anode and a surface of the anode remote from the substrate 1 are encased therein, preventing them from being conductively connected to other conductive film layers.

[0057] In some embodiments, the insulating material herein may be fabricated using the same material as a pixel definition layer. For example, the material of the pixel definition layer may comprise an organic material such as polyimide, acrylic, or polyethylene terephthalate. The specific adjustment position and structure of the pixel definition layer may refer to related techniques and will not be repeated here.

[0058] There is no limitation on a planar graph of the above display area AA. For example, the planar graph of the display area AA may be the rectangle shown in the drawings of the embodiments of the present application. Alternatively, the planar graph of the display area AA may also be other polygons, such as pentagons, hexagons, etc., which are determined according to the usage scenario and usage requirements. For example, the planar graph of the peripheral area BB may be circular. Since the planar graph of the display area AA varies, the planar graph of the peripheral area BB also varies. The planar graph of the peripheral area BB may be determined based on the planar graph of the display area AA. The above planar graph refers to a graph of an orthographic projection of the display panel on the substrate.

[0059] In some embodiments, the emission colors of the light-emitting elements Q in the display area AA of the display panel are the same; for example, the emission colors of the light-emitting elements Q are blue. Alternatively, the emission colors of the light-emitting elements Q are white. If the emission colors of the light-emitting elements Q are blue, the color conversion layer may comprise a first color conversion pattern, a second color conversion pattern, and a third color pattern. The blue light emitted by the light-emitting elements Q may emit red light after passing through the first color conversion pattern, the blue light emitted by the light-emitting elements Q may emit green light after passing through the second color conversion pattern, and the blue light emitted by the light-emitting elements Q may emit blue light after passing through the third color pattern.The first color conversion pattern may be a red quantum dot pattern, the second color conversion pattern may be a green quantum dot pattern, and the third color pattern may be a transparent pattern.

[0060] In some embodiments, each of the light-emitting elements Q in the display area AA of the display panel includes a first color light-emitting element, a second color light-emitting element, and a third color light-emitting element arranged in an array according to a specific rule, wherein the light emitted by the first color light-emitting element is red, the light emitted by the second color light-emitting element is green, and the light emitted by the third color light-emitting element is blue. Here, the color conversion layer may include a first filter pattern, a second filter pattern, and a third filter pattern. The first filter pattern may be a red color-blocking pattern, the second filter pattern may be a green color-blocking pattern, and the third filter pattern may be a blue color-blocking pattern.This color conversion layer can also be referred to as a color film layer or color filter layer (CF). An orthographic projection of the first filter pattern on the substrate 1 overlaps with an orthographic projection of the first colored light-emitting element on the substrate 1, an orthographic projection of the second filter pattern on the substrate 1 overlaps with an orthographic projection of the second colored light-emitting element on the substrate 1, and an orthographic projection of the third filter pattern on the substrate 1 overlaps with an orthographic projection of the third colored light-emitting element on the substrate 1.

[0061] As in Fig. 6, Fig. 13 or Fig. As shown in Figure 14, the display panel includes the conductive layer 3, which includes the cathode ring 31 and the cathodes of the light-emitting elements Q. For example, the cathode ring 31 and the cathodes of the light-emitting elements Q may be an integrated structure, where the integrated structure means that the cathode ring 31 and the cathodes of the light-emitting elements Q are connected to each other, and they can be manufactured using the same material in a single patterning process.

[0062] In a display panel according to embodiments of the present application, the cathode ring 31 is electrically connected to the cathodes of the light-emitting elements Q, and the area in which the cathode ring 31 is located is designated as the R area. All anodes in the R area in which the cathode ring 31 is located are conductively connected to the cathode ring 31 to form a closed circuit between the light-emitting elements Q and the driver circuit of the display panel. To distinguish the anodes of the light-emitting elements Q from all anodes in the R area in which the cathode ring 31 is located, all anodes in the R area in which the cathode ring 31 is located are also referred to as positive electrodes 7. The positive electrodes 7 can be conductively connected to the anodes of all light-emitting elements Q.

[0063] For example, the above conductive layer 3 may be formed of materials with high conductivity and low work function. For example, the conductive layer 3 may be made of metal materials.

[0064] In some examples, the conductive layer 3 may use one or more metal materials such as magnesium (Mg), silver (Ag), copper (Cu), aluminum (Al), titanium (Ti), and molybdenum (Mo), or alloy materials of the above-mentioned metals such as aluminum-neodymium alloy (AlNd) or molybdenum-niobium alloy (MoNb), which may be a single-layer structure or a multi-layer structure such as Ti / Al / Ti, or a stacked structure of the metal and transparent conductive materials such as ITO / Ag / ITO, Mo / AlNd / ITO, etc.

[0065] The above lens layer 2 comprises a plurality of lens structures, wherein the lens layer 2 is located at least on a side of the light-emitting elements Q remote from the substrate 1, that is, the lens layer 2 is located at least on the light-exit side of the light-emitting elements Q, in order to adjust the light path of the display light emitted from the light-emitting elements Q and to improve the light emission efficiency.

[0066] In an exemplary embodiment, the orthographic projection of the lens layer 2 on the substrate 1 is located within the area delimited by the outer contour of the orthographic projection of the cathode ring 31 on the substrate 1, which includes, but is not limited to, the following situations: First, the outer contour of the orthographic projection of the lens layer 2 on the substrate 1 overlaps with the outer contour of the orthographic projection of the cathode ring 31 on the substrate 1, as shown in Fig. 2 shown;

[0067] Secondly, the outer contour of the orthographic projection of the lens layer 2 on the substrate 1 is located within the area delimited by the outer contour of the orthographic projection of the cathode ring 31 on the substrate 1, as shown in Fig. 3, Fig. 4 and Fig. 5. The outer contour of the orthographic projection of the lens layer 2 on the substrate 1 is located within the area delimited by the outer contour of the orthographic projection of the cathode ring 31 on the substrate 1, which may include the following situations: 1) As in Fig. 3, Fig. 4 and Fig. 5, the orthographic projection of the lens layer 2 on the substrate 1 is located within the area delimited by the inner contour of the orthographic projection of the cathode ring 31 on the substrate 1, and the outer contour of the orthographic projection of the lens layer 2 on the substrate 1 is located in the peripheral area BB; 2) The orthographic projection of the lens layer 2 on the substrate 1 is located within the area defined by the inner contour of the orthographic projection of the cathode ring 31 on the substrate 1, and the outer contour of the orthographic projection of the lens layer 2 on the substrate 1 is located at the junction of the display area AA and the peripheral area BB; 3) The orthographic projection of the lens layer 2 on the substrate 1 is located within the area defined by the inner contour of the orthographic projection of the cathode ring 31 on the substrate 1, and the outer contour of the orthographic projection of the lens layer 2 on the substrate 1 is located in the display area AA. Since in practical applications, the lens layer 2 is used to improve the light emission effect; in order to maximize the light efficiency of the display panel and to avoid the failure of the lens layer 2 to be disposed on the light-exit side of some light-emitting elements Q, in rare cases, the outer contour of the orthographic projection of the lens layer 2 on the substrate 1 is located in the display area AA.

[0068] The above orthographic projection of the lens layer 2 on the substrate 1 refers to the projection of the lens layer 2 on the substrate 1 in the direction perpendicular to the plane in which the substrate 1 is located. The description of "orthographic projection" in the embodiments of the present application is similar to the meaning here and will not be repeated in the following text.

[0069] In some embodiments, the material of the lens layer 2 may comprise an organic material such as resins. In practical applications, the lens layer 2 may be formed from the organic material using a high-temperature hot-melt process.

[0070] In some other embodiments, the material of the above lens layer 2 may comprise silicon nitride, silicon oxide, or silicon oxynitride. In practical applications, the lens layer of the organic material may be formed by the high-temperature hot-melt process, and then an inorganic material layer may be formed on the lens layer of the organic material. Subsequently, the lens layer of the organic material is etched away by a dry etching process to obtain the lens layer 2 of the inorganic material.

[0071] In addition, a refractive index of the material of the lens layer 2 is larger than that of the material of the film layer located on the light exit side of the lens layer 2 and in direct contact with the lens layer 2.

[0072] There is no limitation here regarding a contour shape of a cross section of an upper surface of the lens layer 2 perpendicular to the plane in which the substrate 1 is located. The upper surface of the lens layer 2 refers to a surface on which the light exits the lens layer 2. The cross section of the upper surface of the lens layer 2 perpendicular to the plane in which the substrate 1 is located represents a line. In some embodiments, the contour shape of the cross section of the upper surface of the lens layer 2 perpendicular to the plane in which the substrate 1 is located is a polyline. In some embodiments, the contour shape of the cross section of the upper surface of the lens layer 2 perpendicular to the plane in which the substrate 1 is located is a curve.In some embodiments, the contour shape of the cross-section of the upper surface of the lens layer 2 perpendicular to the plane in which the substrate 1 is located is a combination of the polyline and the curve.

[0073] In a display panel according to embodiments of the present application, due to the unevenness of the surfaces of the lens layer in the subsequent process of adhering the cover plate 12, by adjusting the orthographic projection of the lens layer 2 on the substrate 1 within the range defined by the outer contour of the orthographic projection of the cathode ring 31 on the substrate 1, a contact area between the adhesive material and the lens layer 2 can be reduced and a contact area between the adhesive material and the flat area can be increased, thereby improving the adhesive force and adhesive stability and improving the quality of the display panel and prolonging its service life.

[0074] In a display panel according to embodiments of the present application, the outer contour of the orthographic projection of the lens layer 2 on the substrate 1 overlaps with the inner contour of the orthographic projection of the cathode ring 31 on the substrate 1, as shown in Fig. 1 shown.

[0075] It should be noted that the inner contour of the cathode ring 31 overlaps with the outer contour of the cathode of all light-emitting elements Q and the outer contour of the cathode ring 31 is the outer contour of the conductive layer 3.

[0076] In a display panel according to embodiments of the present application, a gap is provided between the outer contour of the orthographic projection of the lens layer 2 on the substrate 1 and the inner contour of the orthographic projection of the cathode ring 31 on the substrate 1, and the outer contour of the orthographic projection of the lens layer 2 on the substrate 1 falls within the peripheral region BB, as shown in Fig. 4 or Fig. 5 shown.

[0077] Providing a gap between the outer contour of the orthographic projection of the lens layer 2 on the substrate 1 and the inner contour of the orthographic projection of the cathode ring 31 on the substrate 1 means: Referring to Fig. 4, Fig. 5 and Fig. 6, the orthographic projection of the lens layer 2 on the substrate 1 does not overlap with the orthographic projection of the cathode ring 31 on the substrate 1, the outer contour of the orthographic projection of the lens layer 2 on the substrate 1 is located within the inner contour of the orthographic projection of the cathode ring 31 on the substrate 1 and there is a certain distance between the outer contour of the orthographic projection of the lens layer 2 on the substrate 1 and the inner contour of the orthographic projection of the cathode ring 31 on the substrate 1. In Fig. 4 and Fig. 5, a dimension of the gap between the outer contour of the orthographic projection of the lens layer 2 on the substrate 1 and the inner contour of the orthographic projection of the cathode ring 31 on the substrate 1 in the direction from the display area AA to the peripheral area BB is denoted by dx.

[0078] In the embodiments of the present application, by providing a gap between the outer contour of the orthographic projection of the lens layer 2 on the substrate 1 and the inner contour of the orthographic projection of the cathode ring 31 on the substrate 1, and by making the outer contour of the orthographic projection of the lens layer 2 on the substrate 1 fall within the peripheral region BB, in the subsequent process of adhering the cover plate 12, a contact area between the adhesive material and the lens layer 2 can be further reduced and a contact area between the adhesive material and the flat region can be increased, while ensuring that the lens layer 2 can improve the light output efficiency of all the light-emitting elements Q in the display panel, thereby improving the adhesive force and adhesive stability, improving the quality of the display panel, and prolonging its service life.

[0079] In a display panel according to embodiments of the present application, as shown in Fig. As shown in FIGS. 4 and 5, the dimension dx of the gap in the direction from the display area AA to the peripheral area BB is less than or equal to a width dl of the cathode ring 31 in the direction from the display area AA to the peripheral area BB.

[0080] In some embodiments, the dimension dx of the gap in the direction from the display area AA to the peripheral area BB is smaller than the width dl of the cathode ring 31 in the direction from the display area AA to the peripheral area BB.

[0081] In some embodiments, the dimension dx of the gap in the direction from the display area AA to the peripheral area BB is equal to the width dl of the cathode ring 31 in the direction from the display area AA to the peripheral area BB.

[0082] In Fig. 4 or Fig. 5, the direction from the display area AA to the peripheral area BB may be a direction pointing from a geometric center of the display area AA to an upper side edge of the display panel, or a direction pointing from a geometric center of the display area AA to a lower side edge of the display panel, or a direction pointing from a geometric center of the display area AA to a left side edge of the display panel, or a direction pointing from a geometric center of the display area AA to a right side edge of the display panel.

[0083] In a display panel according to embodiments of the present application, the dimension dx of the gap in the direction from the display area AA to the peripheral area BB is greater than or equal to a dimension of one of the light-emitting elements Q in the direction from the display area AA to the peripheral area BB.

[0084] In some embodiments, the dimension dx of the gap in the direction from the display area AA to the peripheral area BB is larger than the dimension of one of the light-emitting elements Q in the direction from the display area AA to the peripheral area BB.

[0085] In some embodiments, the dimension dx of the gap in the direction from the display area AA to the peripheral area BB is equal to the dimension of one of the light-emitting elements Q in the direction from the display area AA to the peripheral area BB.

[0086] There are no restrictions on the shapes of the graphs of the orthographic projections of the light-emitting elements Q on the substrate 1. The following illustrates the shapes of the graphs of the orthographic projections of the light-emitting elements Q on the substrate 1 using a rectangle as an example. Based on the different layout directions of the light-emitting elements Q in the display panel, the dimension of the light-emitting element Q in the direction from the display area AA to the peripheral area BB may correspond to a dimension of a long side of the rectangle. Alternatively, the dimension of the light-emitting element Q in the direction from the display area AA to the peripheral area BB may correspond to a dimension of a short side of the rectangle. Alternatively, the dimension of the light-emitting element Q in the direction from the display area AA to the peripheral area BB may correspond to the diagonal dimension of the rectangle.When the shapes of the orthographic projection graphs of the light-emitting elements Q on the substrate 1 are different, the meaning of the dimension of the light-emitting element Q in the direction from the display area AA to the peripheral area BB is similar to the above description. For simplicity, it will not be repeated here.

[0087] In the embodiments of the present application, by providing a gap between the outer contour of the orthographic projection of the lens layer 2 on the substrate 1 and the inner contour of the orthographic projection of the cathode ring 31 on the substrate 1 and by making the outer contour of the orthographic projection of the lens layer 2 on the substrate 1 fall within the peripheral region, in the subsequent process of adhering the cover plate 12, a contact area between the adhesive material and the lens layer 2 can be further reduced and a contact area between the adhesive material and the flat region can be increased, while ensuring that the lens layer 2 can improve the light output efficiency of all the light-emitting elements Q in the display panel, thereby improving the adhesive force and adhesive stability and improving the quality of the display panel and prolonging its service life.

[0088] In a display panel according to embodiments of the present application, and as shown in Fig. As shown in Figure 6, a portion of the light-emitting elements Q are located in the peripheral region BB, and all the light-emitting elements Q located in the peripheral region BB are arranged in a circle along the edges of the display region. The orthographic projection of the cathode ring 31 on the substrate 1 is located on a side remote from the display region AA of the orthographic projections of all the light-emitting elements Q located in the peripheral region BB on the substrate 1; the orthographic projections of all the light-emitting elements Q located in the peripheral region BB on the substrate 1 are within the orthographic projection of the lens layer 2 on the substrate 1.

[0089] The light-emitting elements Q located in the peripheral region BB do not emit light. For example, the anode of the light-emitting element Q located in the dummy area of ​​the peripheral region BB is covered with the insulating material, so that the sides of the anode and a surface of the anode remote from the substrate 1 are encased therein, preventing them from being conductively connected to other conductive film layers and thus from emitting light.The light-emitting elements Q arranged in the dummy area in the peripheral area BB are used to improve the structural consistency of the display area AA and the peripheral area BB of the display panel, thereby avoiding color differences visible to the naked eye at the junction between the display area AA and the peripheral area BB due to relatively large structural differences in the dark state of the display panel, and creating a natural transition between the display area AA and the peripheral area BB. As a result, the aesthetics of the display panel are improved.

[0090] The orthographic projection of the cathode ring 31 on the substrate 1 is located on a side remote from the display area AA of an orthographic projection of each light-emitting element Q located in the peripheral area BB on the substrate 1, which can be understood as follows: A region where the cathode ring 31 is located is on an outer side of the region (dummy region) where the light-emitting element Q is located in the peripheral area BB, where “outer side” refers to a side remote from the display area AA and close to the edge of the display panel.

[0091] Furthermore, the orthographic projections of the light-emitting elements Q located in the peripheral region BB on the substrate 1 lie within the orthographic projection of the lens layer 2 on the substrate 1, which includes, but is not limited to, the following situations: Firstly, the outer contour of the orthographic projections of the light-emitting elements Q located in the peripheral region BB on the substrate 1 falls within a region delimited by the outer contour of the orthographic projection of the lens layer 2 on the substrate 1, as shown in Fig. 6 shown;

[0092] Secondly, the outer contour of the orthographic projections of the light-emitting elements Q located in the peripheral region BB on the substrate 1 overlaps with the outer contour of the orthographic projection of the lens layer 2 on the substrate 1.

[0093] By arranging a portion of the light-emitting elements Q in the peripheral region BB in a display panel according to embodiments of the present application, and by arranging all the light-emitting elements Q located in the peripheral region BB in a circle along the edges of the display panel, and by arranging the orthographic projections of all the light-emitting elements Q located in the peripheral region BB on the substrate 1 within the orthographic projection of the lens layer 2 on the substrate 1, the structural consistency of the display region AA and the peripheral region BB of the display panel can be further improved, thereby avoiding color differences visible to the naked eye at the junction between the display region AA and the peripheral region BB due to significant structural differences in the dark state of the display panel.so that a natural transition is created between the display area AA and the peripheral area BB, thus further improving the aesthetics of the display panel.

[0094] In a display panel according to embodiments of the present application, the peripheral area BB comprises, as shown in Fig. 7 to Fig. 12, a first circumferential portion B1, a second circumferential portion B2, a third circumferential portion B3 and a fourth circumferential portion B4, wherein the fourth circumferential portion B4 is arranged opposite the first circumferential portion B1, the second circumferential portion B2 is arranged opposite the third circumferential portion B3 and the fourth circumferential portion B4 comprises a binding terminal 5.

[0095] As in Fig. 7 and Fig. 8, a width H1 of a part of the cathode ring 31 located in the fourth circumferential partial area B4 in a direction from the display area AA to the circumferential area BB is less than or equal to the width (for example, the width H2, the width H3 and the width H4) of a part of the cathode ring 31 located in the circumferential area BB, except for the fourth circumferential partial area B4, in the direction from the display area AA to the circumferential area BB.

[0096] In some embodiments, a width H1 of a part of the cathode ring 31 located in the fourth circumferential partial region B4 in a direction from the display region AA to the circumferential region BB is smaller than the width (e.g., the width H2, the width H3, and the width H4) of a part of the cathode ring 31 located in the circumferential region BB, except for the fourth circumferential partial region B4, in the direction from the display region AA to the circumferential region BB.

[0097] When the width H1 of a part of the cathode ring 31 located in the fourth circumferential partial area B4 in a direction from the display area AA to the circumferential area BB is smaller than the width (for example, the width H2, the width H3 and the width H4) of a part of the cathode ring 31 located in the circumferential area BB, except for the fourth circumferential partial area B4, in the direction from the display area AA to the circumferential area BB, there is no restriction as to whether the widths of the part of the cathode ring 31 located in the circumferential area BB, except for the fourth circumferential partial area B4, in the direction from the display area AA to the circumferential area BB, are the same.That is, there is no restriction as to whether the width H2 of a part of the cathode ring 31 located in the first circumferential partial area B1 in the direction from the display area AA to the circumferential area BB, the width H4 of a part of the cathode ring 31 located in the second circumferential partial area B2 in the direction from the display area AA to the circumferential area BB, and the width H3 of a part of the cathode ring 31 located in the third circumferential partial area B3 in the direction from the display area AA to the circumferential area BB are the same.

[0098] For example, the width H1 of a part of the cathode ring 31 located in the fourth circumferential partial region B4 in a direction from the display area AA to the circumferential area BB is smaller than the width H2 of a part of the cathode ring 31 located in the first circumferential partial region B1 in the direction from the display area AA to the circumferential area BB, and the width H1 of a part of the cathode ring 31 located in the fourth circumferential partial region B4 in a direction from the display area AA to the circumferential area BB is smaller than the width H4 of a part of the cathode ring 31 located in the second circumferential partial region B2 in the direction from the display area AA to the circumferential area BB, and the width H1 of a part of the cathode ring 31 located in the fourth circumferential partial region B4 in a direction from the display area AA to the circumferential area BB is smaller than the width H3 of a part of the cathode ring 31 located in the third Perimeter section B3 is located,in the direction from the display area AA to the peripheral area BB.,

[0099] In some embodiments, the width H2 of a part of the cathode ring 31 located in the first circumferential portion B1 in the direction from the display area AA to the circumferential area BB, the width H4 of a part of the cathode ring 31 located in the second circumferential portion B2 in the direction from the display area AA to the circumferential area BB, and the width H3 of a part of the cathode ring 31 located in the third circumferential portion B3 in the direction from the display area AA to the circumferential area BB are all the same.

[0100] In some embodiments, the width H2 of a portion of the cathode ring 31 located in the first circumferential sub-region B1 in the direction from the display area AA to the circumferential area BB, the width H4 of a portion of the cathode ring 31 located in the second circumferential sub-region B2 in the direction from the display area AA to the circumferential area BB, and the width H3 of a portion of the cathode ring 31 located in the third circumferential sub-region B3 in the direction from the display area AA to the circumferential area BB are not all equal. Here, "not all equal" includes that only some of them are equal or that all three are unequal, which will not be repeated here.

[0101] In some embodiments, the width H1 of a part of the cathode ring 31 located in the fourth circumferential partial region B4 in a direction from the display region AA to the circumferential region BB is equal to the width (e.g., the width H2, the width H3, and the width H4) of a part of the cathode ring 31 located in the circumferential region BB, except for the fourth circumferential partial region B4, in the direction from the display region AA to the circumferential region BB.

[0102] When the width H1 of a part of the cathode ring 31 located in the fourth circumferential partial region B4 in a direction from the display area AA to the circumferential area BB is equal to the width (for example, the width H2, the width H3 and the width H4) of a part of the cathode ring 31 located in the circumferential area BB, excluding the fourth circumferential partial region B4, in the direction from the display area AA to the circumferential area BB, the width H2 of a part of the cathode ring 31 located in the first circumferential partial region B1 in the direction from the display area AA to the circumferential area BB, the width H4 of a part of the cathode ring 31 located in the second circumferential partial region B2 in the direction from the display area AA to the circumferential area BB, and the width H3 of a part of the cathode ring 31 located in the third circumferential partial region B3 in the direction from the display area AA to the circumferential area BB are all the same.

[0103] Since the fourth peripheral region B4 includes the bonding terminal 5, it is understood that at least one driver chip may be arranged in a local region of the fourth peripheral region B4, and the driver chip is electrically connected to the display panel via the bonding terminal 5 to supply a drive signal to the display panel.

[0104] As in Fig. 7 and Fig. 8, a gap is provided between the outer contour of the orthographic projection of the lens layer 2 on the substrate 1 and the inner contour of the orthographic projection of the cathode ring 31 on the substrate 1, and the width H1 of a part of the cathode ring 31 located in the fourth circumferential partial region B4 in a direction from the display area AA to the circumferential area BB is smaller than the width (for example, the width H2, the width H3, and the width H4) of a part of the cathode ring 31 located in the circumferential area BB, except for the fourth circumferential partial region B4, in the direction from the display area AA to the circumferential area BB;In this way, the width H1 of a part of the cathode ring 31 located in the fourth circumferential portion B4 is relatively narrow in a direction from the display area AA to the circumferential portion BB, so that a large adhesion space for the adhesive material and the film layers is maintained in the planar area in the fourth circumferential portion B4, thereby significantly improving the adhesion area between the adhesive material and the underlying film layer, thus improving the adhesion force and adhesion stability, improving the quality of the display panel, and prolonging the service life of the display panel.

[0105] In addition, since the area occupied by the cathode ring 31 in the fourth circumferential portion B4 is relatively small and the area where the adhesive material is adhered to the relatively flat portion is relatively large, when pressure and heat are applied to the local area of ​​the fourth circumferential portion B4 during the subsequent bonding process, the adhesive force between the cover plate 12 and the adhesive material does not decrease even with the thermal expansion of the adhesive material caused by the heat in the bonding process due to the large adhesion area of ​​the adhesive material after the superposition of the effects generated by the two factors. Therefore, the bonding stability of the cover plate 12 is further improved, thereby improving the quality of the display panel and extending the service life of the display panel.

[0106] In a display panel according to embodiments of the present application, as shown in Fig. 7 or Fig. 8, the width H1 of a part of the cathode ring 31 located in the fourth circumferential partial area B4 in a direction from the display area AA to the circumferential area BB is smaller than the width H2 of a part of the cathode ring 31 located in the first circumferential partial area B1 in the direction from the display area AA to the circumferential area BB.

[0107] Because, in the embodiments of the present application, the width H1 of a part of the cathode ring 31 located in the fourth circumferential partial region B4 in a direction from the display area AA to the circumferential area BB is smaller than the width H2 of a part of the cathode ring 31 located in the first circumferential partial region B1 in the direction from the display area AA to the circumferential area BB, the width H1 of a part of the cathode ring 31 located in the fourth circumferential partial region B4 is relatively narrow in a direction from the display area AA to the circumferential area BB, so that a large adhesive space for the adhesive material and the film layers is maintained in the planar area in the fourth circumferential partial region B4, thereby significantly improving the adhesion area between the adhesive material and the underlying film layer, thus improving the adhesion force and the adhesive stability.The quality of the display panel is improved and the service life of the display panel is extended. Furthermore, during the subsequent bonding process, when pressure and heat are applied to the local area of ​​the fourth circumferential portion B4, the adhesive material has a relatively large area to adhere to the relatively flat area due to the small area occupied by the cathode ring 31 in the fourth circumferential portion B4. Even if the heat in the bonding process causes thermal expansion of the adhesive material, the adhesive force between the cover plate 12 and the adhesive material does not decrease due to the large adhesion area of ​​the adhesive material after the superposition of the effects generated by the two factors. Therefore, the bonding stability of the cover plate 12 is further improved, thereby improving the quality of the display panel and extending the service life of the display panel.

[0108] In a display panel according to embodiments of the present application and as shown in Fig. 9 and Fig. 10, an orthographic projection graph of the lens layer 2 on the substrate 1 includes a first side edge and a second side edge arranged opposite each other, and an inner contour of an orthographic projection graph of the cathode ring 31 on the substrate 1 includes a first edge and a second edge arranged opposite each other, wherein the first side edge and the first edge lie in the second circumferential partial region B2, the second side edge and the second edge lie in the third circumferential partial region B3; a minimum distance L1 between the first side edge and the first edge is different from a minimum distance L2 between the second side edge and the second edge.

[0109] It should be noted that the minimum distance L1 between the first side edge and the first edge refers to a distance from the first side edge to the first edge in the direction from the display area AA to the peripheral area BB, and the meaning of the minimum distance L2 between the second side edge and the second edge is similar to this meaning and is not repeated here for simplicity.

[0110] In some embodiments, as in Fig. 9, the minimum distance L1 between the first side edge and the first edge is greater than the minimum distance L2 between the second side edge and the second edge.

[0111] In some embodiments, as in Fig. 10, the minimum distance L1 between the first side edge and the first edge is smaller than the minimum distance L2 between the second side edge and the second edge.

[0112] Because it is provided in a display panel according to embodiments of the present application that the minimum distance L1 between the first side edge of the lens layer 2 and the first edge of the cathode ring 31 differs from the minimum distance L2 between the second side edge of the lens layer 2 and the second edge of the cathode ring 31, the second circumferential partial region B2 and the third circumferential partial region B3, which are located on both sides of the display area AA in the display panel, are asymmetrical, and the part of the lens layer 2 that is located in the second circumferential partial region B2 and the part of the lens layer 2 that is located in the third circumferential partial region B3 are also asymmetrical.Therefore, when applied to the AR or VR display device, the display panel can meet the usage requirements of the AR or VR display device for the perspective, which enables a wider use of the display panel in the AR or VR display devices.

[0113] In a display panel according to embodiments of the present application, as shown in Fig. 11 and Fig. 12, a graph of the orthographic projection of the lens layer 2 on the substrate 1 comprises a first side edge and a second side edge arranged opposite one another, and an inner contour of a graph of the orthographic projection of the cathode ring 31 on the substrate 1 comprises a first edge and a second edge arranged opposite one another, wherein the first side edge and the first edge lie in the second circumferential partial region B2, the second side edge and the second edge lie in the third circumferential partial region B3;

[0114] As in Fig. 11 and Fig. 12, a minimum distance L1 between the first side edge and the first edge is equal to a minimum distance L2 between the second side edge and the second edge; a width H4 of a part of the cathode ring 31 located in the second circumferential partial region B2 in the direction from the display area AA to the circumferential area BB is different from a width H3 of a part of the cathode ring 31 located in the third circumferential partial region B3 in the direction from the display area AA to the circumferential area BB.

[0115] In some embodiments, as in Fig. 11, the width H4 of a part of the cathode ring 31 located in the second circumferential portion B2 in the direction from the display area AA to the circumferential portion BB is smaller than the width H3 of a part of the cathode ring 31 located in the third circumferential portion B3 in the same direction.

[0116] In some other embodiments, as in Fig. 12, the width H4 of a part of the cathode ring 31 located in the second circumferential portion B2 in the direction from the display area AA to the circumferential portion BB is larger than the width H3 of a part of the cathode ring 31 located in the third circumferential portion B3 in the same direction.

[0117] By providing, in a display panel according to embodiments of the present application, that the width H4 of a part of the cathode ring 31 located in the second circumferential partial region B2 in the direction from the display area AA to the circumferential area BB differs from the width H3 of a part of the cathode ring 31 located in the third circumferential partial region B3 in the direction from the display area AA to the circumferential area BB, the second circumferential partial region B2 and the third circumferential partial region B3 located on both sides of the display area AA in the display panel are asymmetrical, so that the display panel, when applied to the AR or VR display device, can meet the usage requirements of the AR or VR display device for the perspective, which enables a wider use of the display panel in the AR or VR display devices.

[0118] In a display panel according to embodiments of the present application, as shown in Fig. 15, an orthographic projection graph of the lens layer 2 on the substrate 1 includes a first side edge and a second side edge arranged opposite one another, and an inner contour of an orthographic projection graph of the cathode ring 31 on the substrate 1 includes a first edge and a second edge arranged opposite one another, wherein the first side edge and the first edge lie in the second circumferential partial region B2, the second side edge and the second edge lie in the third circumferential partial region B3; a minimum distance L1 between the first side edge and the first edge is equal to a minimum distance L2 between the second side edge and the second edge;a width H4 of a part of the cathode ring 31 located in the second circumferential portion B2 in the direction from the display area AA to the circumferential portion BB is equal to a width H3 of a part of the cathode ring 31 located in the third circumferential portion B3 in the same direction;

[0119] By making a minimum distance L1 between the first side edge and the first edge equal to a minimum distance L2 between the second side edge and the second edge in a display panel according to embodiments of the present application, and making a width H4 of a part of the cathode ring 31 located in the second circumferential partial region B2 in the direction from the display region AA to the circumferential region BB equal to a width H3 of a part of the cathode ring 31 located in the third circumferential partial region B3 in the same direction, the design can be simplified, the difficulty of the manufacturing process can be reduced, and the costs can be reduced.

[0120] In a display panel according to embodiments of the present application, as shown in Fig. 6, Fig. 13 and Fig. 14, the lens layer 2 includes a plurality of first lenses 22 and a plurality of second lenses 21, wherein all of the first lenses 22 are arranged in the display area AA and all of the second lenses 21 are arranged in the peripheral area BB; a height of each of the second lenses 21 in a direction perpendicular to a plane in which the substrate 1 is located is less than or equal to a height of each of the first lenses 22 in the direction perpendicular to the plane in which the substrate 1 is located.

[0121] In some embodiments, it may be provided that the height of each of the second lenses 21 in a direction perpendicular to a plane in which the substrate 1 is located is equal to the height of each of the first lenses 22 in the direction perpendicular to the plane in which the substrate 1 is located.

[0122] In some other embodiments, it may be provided that the height of each of the plurality of second lenses 21 in a direction perpendicular to a plane in which the substrate 1 is located is smaller than the height of each of the plurality of first lenses 22 in the direction perpendicular to the plane in which the substrate 1 is located.

[0123] By providing, in a display panel according to embodiments of the present application, that the height of the first lenses 22 located in the display area AA is greater than or equal to the height of the second lenses 21 located in the peripheral area BB, the first lens 22 can concentrate the display light emitted in the display area AA and improve the light emission efficiency; at the same time, the second lens 21 can also serve as a transition structure. On the one hand, the second lens 21 can concentrate light to a certain degree near the junction of the display area AA and the peripheral area BB, which prevents uneven brightness in the local area of ​​the display area AA near the peripheral area BB.On the other hand, the structural consistency of the display area AA and the peripheral area BB of the display panel can be further improved, thereby avoiding color differences visible to the naked eye at the junction between the display area AA and the peripheral area BB due to significant structural differences in the dark state of the display panel, and enabling a natural transition between the display area AA and the peripheral area BB. As a result, the aesthetics of the display panel are further improved.

[0124] In a display panel according to embodiments of the present application, the height of each of the second lenses 21 in a direction from the display area AA to the peripheral area BB gradually decreases in the direction perpendicular to the plane in which the substrate 1 is located, as shown in Fig. 6, Fig. 13 and Fig. 14 shown.

[0125] By providing, in a display panel according to embodiments of the present application, that the height of each of the second lenses 21 in a direction from the display region AA to the peripheral region BB gradually decreases in the direction perpendicular to the plane in which the substrate 1 is located, the edge region of the lens layer 2 tends to be more flat, i.e., the flatness is higher. In this way, in the subsequent process of adhering the cover plate 12, the contact area between the adhesive material and the lens layer can be further reduced and a contact area between the adhesive material and the flat region can be increased, thereby improving the adhesive force and adhesive stability, improving the quality of the display panel, and extending its service life.In addition, the structural transition between the display area AA and the peripheral area BB of the display panel is more natural, thereby avoiding uneven brightness in the local area of ​​the display area AA near the peripheral area BB in the bright state of the display panel, and avoiding color differences visible to the naked eye at the junction between the display area AA and the peripheral area BB due to significant structural differences in the dark state of the display panel, thus further improving the aesthetics of the display panel.

[0126] In a display panel according to embodiments of the present application, the shapes of graphs of orthographic projections of the second lenses 21 on the substrate 1 comprise ellipses, and the extension directions of the long axes of at least a part of the ellipses in the circumferential region BB are different.

[0127] In an exemplary embodiment, the extension directions of the long axes of at least a portion of the ellipses in the circumferential region BB are different, which includes, but is not limited to, the following situations: Firstly, as in Fig. 6 and Fig. 13, in the circumferential region BB, the extension directions of the long axes of some ellipses (the graphs of the projections of the second lenses 21) are different, but the extension directions of the long axes of some other ellipses (the graphs of the projections of the second lenses 21) are the same;

[0128] Secondly, as in Fig. 14, in the circumferential region BB the extension directions of the long axes of all ellipses (the graphs of the orthographic projections of the second lenses 21) are different.

[0129] In a display panel according to embodiments of the present application, by setting the extending directions of the long axes of at least a part of the ellipses in the peripheral region BB differently, the light entering the second lenses 21 due to scattering or refraction can be scattered and then emitted from the display panel, so that the display brightness gradually decreases from the junction of the display region AA to the peripheral region BB in the bright state of the display panel, and no obvious black gap is formed at the junction of the display region AA and the peripheral region BB due to a sudden decrease in brightness, thereby improving the display effect of the display panel.

[0130] In a display panel according to embodiments of the present application, the shapes of graphs of orthographic projections of the first lenses 22 on the substrate 1 comprise ellipses, and the extending directions of the long axes of at least a part of the ellipses in the display area AA are the same.

[0131] By providing, in a display panel according to embodiments of the present application, that the shapes of graphs of orthographic projections of the first lenses 22 on the substrate 1 comprise ellipses, the ability of the first lens 22 to converge light along the long axis direction of the ellipse differs from its ability to converge light along the short axis direction of the ellipse while the first lens 22 converges the light emitted by the light-emitting elements Q. In this way, not only can the brightness of the display panel be improved at front viewing angles, but also the light toward large viewing angles can be controlled to varying degrees, thus meeting the demand for greater brightness control of the display panel at large viewing angles.

[0132] In an exemplary embodiment, the extension directions of the long axes of at least a portion of the ellipses in the display area AA are the same, which includes, but is not limited to, the following situations: Firstly, as in Fig. 14, in the display area AA, the extension directions of the long axes of some ellipses (the graphs of the projections of the first lenses 22) are the same; Secondly, as shown in Fig. 6 and Fig. 13, in the display area AA the extension directions of the long axes of all ellipses (the graphs of the projections of the first lenses 22) are the same.

[0133] By providing, in a display panel according to embodiments of the present application, that the extension directions of the long axes of at least some of the ellipses in the display area AA are the same, it is achieved that in the display area AA the ability of all first lenses 22 to converge light along the long axis direction of the ellipse is as consistent as possible, and the ability of all first lenses 22 to converge light along the short axis direction of the ellipse is also as consistent as possible, thereby improving the degree of light collection of each first lens 22 onto each light-emitting element Q and increasing the light output brightness of the display panel and improving the display effect.

[0134] In a display panel according to embodiments of the present application, the structures and dimensions of the first lenses 22 located on one side of a connecting line of the display area AA and the peripheral area BB are equal to the structures and dimensions of the second lenses 21 located on the other side of the connecting line, as shown in Fig. 13 shown.

[0135] In Fig. 13, two circles of lenses are arranged on both sides of the line connecting the display area AA and the peripheral area BB. By making the structures and dimensions of the first lenses 22 located on one side of a line connecting the display area AA and the peripheral area BB the same as the structures and dimensions of the second lenses 21 located on the other side of the connecting line, it is possible to make the amount of light emitted into the second lenses 21 on one side of the connecting line due to scattering or refraction close to the amount of light emitted from the light-emitting elements Q into the first lenses 22.As a result, the display brightness gradually decreases from the junction of the display area AA to the peripheral area BB in the bright state of the display panel, and there is no obvious black gap at the junction of the display area AA and the peripheral area BB due to a sudden decrease in brightness, thereby improving the display effect of the display panel.

[0136] In a display panel according to embodiments of the present application, the shapes of orthographic projection graphs of the first lenses 22 and the second lenses 21 on the substrate 1 both comprise ellipses, and the extending directions of the long axes of the orthographic projection graphs of the first lenses 22 located on one side of the connecting line are the same as the extending directions of the long axes of the orthographic projection graphs of the second lenses 21 located on the other side of the connecting line.

[0137] By providing, in a display panel according to embodiments of the present application, that the shapes of graphs of orthographic projections of the first lenses 22 located on one side of the connecting line of the display area AA and the peripheral area BB, and of the second lenses 21 located on the other side of the connecting line are ellipses and the extension directions of the long axes of the ellipses of the two are the same, it can further be achieved that the amount of light emitted due to scattering or refraction into the second lenses 21 on one side of the connecting line is close to the amount of light emitted from the light-emitting elements Q into the first lenses 22.As a result, the display brightness gradually decreases from the junction of the display area AA to the peripheral area BB in the bright state of the display panel, and there is no obvious black gap at the junction of the display area AA and the peripheral area BB due to a sudden decrease in brightness, thereby improving the display effect of the display panel.

[0138] In a display panel according to embodiments of the present application, as shown in Fig. 6, Fig. 13 and Fig. 14, the display panel includes a first encapsulation layer F1, a color filter layer CF, and a second encapsulation layer F2 arranged in sequence, wherein the first encapsulation layer F1 covers the light-emitting elements Q and the cathode ring 21 and extends to the peripheral region of the display panel, the second encapsulation layer F2 is located between the color filter layer CF and the lens layer 2, and the second encapsulation layer F2 still extends to the peripheral region BB. A roughness of at least a partial region of a surface of the second encapsulation layer F2 remote from the substrate 1 is greater than a roughness of a surface of the first encapsulation layer F1 remote from the substrate 1.

[0139] In an exemplary embodiment, the first encapsulation layer F1 and the second encapsulation layer F2 are both single-layered and their materials are inorganic materials.

[0140] For example, the materials of the first encapsulation layer F1 and the second encapsulation layer F2 may be silicon nitride, silicon oxide or silicon oxynitride.

[0141] For example, the materials of the first encapsulation layer F1 and the second encapsulation layer F2 may be the same.

[0142] The fact that a roughness of at least a partial area of ​​a surface of the second encapsulation layer F2 remote from the substrate 1 is greater than a roughness of a surface of the first encapsulation layer F1 remote from the substrate 1 includes, but is not limited to, the following situations: First, the roughness of a portion of the surface of the second encapsulation layer F2 remote from the substrate 1 is greater than the roughness of the surface of the first encapsulation layer F1 remote from the substrate 1;

[0143] Second, the roughness of the entire area of ​​the surface of the second encapsulation layer F2 remote from the substrate 1 is greater than the roughness of the surface of the first encapsulation layer F1 remote from the substrate 1.

[0144] In a display panel according to embodiments of the present application, the roughness of at least a partial region of a surface of the second encapsulation layer F2 remote from the substrate 1 is greater than or equal to ten times the roughness of the surface of the first encapsulation layer F1 remote from the substrate 1.

[0145] In some embodiments, the manufacturing process parameters of the first encapsulation layer F1 and the second encapsulation layer F2 can be regulated, and the roughness of the surface of the first encapsulation layer F1 and the second encapsulation layer F2 can be controlled by controlling the uniformity of the thickness of the first encapsulation layer F1 and the second encapsulation layer F2.

[0146] For example, a difference value between a minimum distance from the surface of the second encapsulation layer F2 remote from the substrate 1 to the substrate 1 in a direction perpendicular to the substrate 1 and a maximum distance from the surface of the second encapsulation layer F2 remote from the substrate 1 to the substrate 1 in a direction perpendicular to the substrate 1 can be controlled to 500 Å-1000 Å. A difference value between a minimum distance from the surface of the first encapsulation layer F1 remote from the substrate 1 to the substrate 1 in a direction perpendicular to the substrate 1 and a maximum distance from the surface of the first encapsulation layer F1 remote from the substrate 1 to the substrate 1 in a direction perpendicular to the substrate 1 can be controlled to 50 Å-100 Å.It is understandable that the flatness of the surface of the second encapsulation layer F2 remote from the substrate 1 is lower than that of the surface of the first encapsulation layer F1 remote from the substrate 1.

[0147] In an exemplary embodiment, the color filter layer CF may include a first filter pattern, a second filter pattern, and a third filter pattern. One of the first filter pattern, the second filter pattern, and the third filter pattern may be a red color blocking pattern, another may be a green color blocking pattern, and yet another may be a blue color blocking pattern. Furthermore, the color filter layer CF may further include a black matrix, and the black matrix may be provided between any two adjacent filter patterns to prevent mixing of light of different colors. For example, the black matrix is ​​provided between the first filter pattern and the second filter pattern, the black matrix is ​​provided between the second filter pattern and the third filter pattern, and the black matrix is ​​provided between the first filter pattern and the third filter pattern.

[0148] Because in the embodiments of the present application a roughness of at least a partial area of ​​a surface of the second encapsulation layer F2 remote from the substrate 1 is greater than a roughness of a surface of the first encapsulation layer F1 remote from the substrate 1, in the subsequent bonding process the adhesive material can have a better adhesive force with the second encapsulation layer F2 having a higher roughness, thereby improving the adhesive force and adhesive stability of the cover plate 12 and improving the quality of the display panel and extending its service life.

[0149] In a display panel according to embodiments of the present application, as shown in Fig. 6, Fig. 13 and Fig. 14, the display panel further comprises an adhesive layer 11 and a cover plate 12, wherein the adhesive layer 11 is located on a side of the lens layer 2 remote from the substrate 1, and the cover plate 12 is located on a side of the adhesive layer 11 remote from the lens layer 2. An orthographic projection of the adhesive layer 11 on the substrate 1 lies within an orthographic projection of the second encapsulation layer F2 on the substrate 1, and the adhesive layer 11 is in direct contact with a partial region of the second encapsulation layer F2 and the lens layer 2, respectively.

[0150] In an exemplary embodiment, a material for the adhesive layer 11 includes the adhesive materials such as optical adhesives (OCA) or light-transmitting resins.

[0151] Because the embodiments of the present application provide that the orthographic projection of the lens layer 2 on the substrate 1 lies within the area delimited by the outer contour of the orthographic projection of the cathode ring 31 on the substrate 1, and the adhesive layer 11 is in direct contact with a partial area of ​​the second encapsulation layer F2 and the lens layer 2, and the surface of the second encapsulation layer F2 remote from the substrate 1 has a greater roughness, due to the unevenness of the surfaces of the lens layer 2 in the subsequent process for adhering the cover plate 12, by contracting the boundary of the lens layer inwards, it can be achieved that a contact area between the adhesive material and the lens layer 2 is reduced and a contact area between the adhesive material and the flat area is increased.In addition, the surface of the second encapsulation layer F2 remote from the substrate 1 has a greater roughness, which can significantly improve the adhesive force of the adhesive layer 11, thereby improving the adhesive stability, improving the quality of the display panel, and prolonging the service life of the display panel.

[0152] In a display panel according to embodiments of the present application, an area of ​​a region in direct contact with the second encapsulation layer F2 of a part of the adhesive layer 11 located in the fourth peripheral partial region B4 is greater than or equal to an area of ​​a region in direct contact with the second encapsulation layer F2 of a part of the adhesive layer 11 located in the first peripheral partial region B1.

[0153] In some embodiments, the area of ​​the region in direct contact with the second encapsulation layer F2 of a part of the adhesive layer 11 located in the fourth circumferential partial region B4 is equal to the area of ​​the region in direct contact with the second encapsulation layer F2 of a part of the adhesive layer 11 located in the first circumferential partial region B1.

[0154] In some embodiments, the area of ​​the region in direct contact with the second encapsulation layer F2 of a part of the adhesive layer 11 located in the fourth circumferential partial region B4 is larger than the area of ​​the region in direct contact with the second encapsulation layer F2 of a part of the adhesive layer 11 located in the first circumferential partial region B1.

[0155] In the embodiments of the present application, it is provided that an area of ​​a region that is in direct contact with the second encapsulation layer F2, of a part of the adhesive layer 11 that is located in the fourth circumferential partial region B4, is greater than or equal to an area of ​​a region that is in direct contact with the second encapsulation layer F2, of a part of the adhesive layer 11 that is located in the first circumferential partial region B1;Since the area of ​​the region in direct contact with the second encapsulation layer F2 of a part of the adhesive layer 11 located in the fourth peripheral portion B4 is relatively large, when pressure and heat are applied to the local area of ​​the fourth peripheral portion B4 during the subsequent bonding process, the adhesive force between the cover plate 12 and the adhesive layer 11, as well as between the adhesive layer 11 and the lower film layer, does not decrease even with the thermal expansion of the adhesive material caused by the heat in the bonding process due to the large adhesion area of ​​the adhesive layer 11 after the superposition of the effects generated by the two factors. Therefore, the bonding stability is further improved, thereby improving the quality of the display panel and extending the service life of the display panel.

[0156] In a display panel according to embodiments of the present application, as shown in Fig. 6, Fig. 13 and Fig. 14, the display panel further comprises a light-shielding layer ZG, wherein the light-shielding layer ZG is located in the peripheral region BB and surrounds the display region AA, and wherein the light-shielding layer ZG and the color filter layer CF are arranged in the same layer; the orthographic projection of the cathode ring 31 on the substrate 1 lies within an orthographic projection of the light-shielding layer ZG on the substrate 1; the outer contour of the orthographic projection of the lens layer 2 on the substrate 1 falls within a region in which an orthographic projection of the light-shielding layer ZG on the substrate 1 is located, and an orthographic projection of an outer contour of the light-shielding layer ZG on the substrate 1 lies within an orthographic projection of the cover plate 12 on the substrate 1.

[0157] In some embodiments, the light-shielding layer ZG may have a single-layer structure, for example, the light-shielding layer ZG is made of the same material as the black matrix.

[0158] In some other embodiments, the light-shielding layer ZG may have a multi-layer structure. For example, the light-shielding layer ZG may have multiple sublayers. For example, the light-shielding layer ZG may be formed by stacking a first sublayer made using the same material as the red filter pattern, a second sublayer made using the same material as the green filter pattern, and a third sublayer made using the same material as the blue filter pattern. There is no limitation on the order of stacking the first sublayer, the second sublayer, and the third sublayer. For example, in the direction away from the substrate 1, the first sublayer, the second sublayer, and the third sublayer may be arranged sequentially.For example, in the direction away from the substrate, the first sublayer, the third sublayer, and the second sublayer may be arranged sequentially. For example, in the direction away from the substrate, the second sublayer, the first sublayer, and the third sublayer may be arranged sequentially. Of course, other situations may also be included, which may be determined in particular based on the manufacturing process order of the red filter pattern, the green filter pattern, and the blue filter pattern. For example, as shown in . Fig. 6, Fig. 13 or Fig. 14, the light-shielding layer ZG may be formed by stacking a first sub-layer made using the same material as the red filter pattern and a second sub-layer made using the same material as the blue filter pattern.

[0159] It should be noted that the light-shielding layer ZG and the color filter layer CF are arranged in the same layer, which means that the light-shielding layer ZG and the color filter layer CF are formed in the same patterning process, and does not mean that the thicknesses of the light-shielding layer ZG and the color filter layer CF are the same.

[0160] In an exemplary embodiment, the light-shielding layer ZG arranged in the peripheral region BB surrounds the display region AA. It is understood that the projection shape of the light-shielding layer ZG may be a ring shape. There is no limitation here regarding the specific shape of the aforementioned ring shape. For example, the ring shape may include a circular ring shape, an elliptical ring shape, a polygonal ring shape, etc.

[0161] In the embodiments of the present application, by providing the light-shielding layer ZG, the light-shielding layer ZG can cover at least some of the circuits and wirings of the peripheral region BB, thereby avoiding a reduction in the display effects caused by their reflection.

[0162] The orthographic projection of the cathode ring 31 on the substrate 1 lies within an orthographic projection of the light-shielding layer ZG on the substrate 1, which includes, but is not limited to, the following situations: First, the outer contour of the orthographic projection of the cathode ring 31 on the substrate 1 is located within the outer contour of the orthographic projection of the light-shielding layer ZG on the substrate 1;

[0163] Second, the outer contour of the orthographic projection of the cathode ring 31 on the substrate 1 overlaps with the outer contour of the orthographic projection of the light-shielding layer ZG on the substrate 1.

[0164] By placing the orthographic projection of the cathode ring 31 on the substrate 1 within an orthographic projection of the light-shielding layer ZG on the substrate 1, the light-shielding layer ZG can cover the cathode ring 31, thereby avoiding a reduction in the display effects caused by reflection of the cathode ring 31.

[0165] In a display panel according to embodiments of the present application, a shape of a graph of the orthographic projection of the cathode ring 31 on the substrate 1 comprises polygons with rounded corners, as shown in Fig. 16 shown.

[0166] By including polygons with rounded corners in the orthographic projection graph of the cathode ring 31 on the substrate 1 in the embodiments of the present application, the cathode ring 31 is prevented from having sharp conductor patterns that increase the likelihood of electrostatic breakdown. This improves the stability of signal transmission in the display panel and increases the product reliability of the display panel.

[0167] In a display panel according to embodiments of the present application, the display panel further comprises a plurality of positive electrodes 7 located in the peripheral region BB, wherein the positive electrodes 7 and anodes of the light-emitting elements Q are arranged in the same layer; wherein the positive electrodes 7 are electrically connected to the anodes and the positive electrodes 7 are in direct contact with the cathode ring 31.

[0168] In a display panel according to embodiments of the present application, the cathode ring 31 is electrically connected to the cathodes of the light-emitting elements Q, and the area in which the cathode ring 31 is located is designated as the R area. The positive electrodes 7 are conductively connected to the cathode ring 31 by having the positive electrodes 7 in direct contact with the cathode ring 31 to form a closed circuit between the light-emitting elements Q and the driver circuit of the display panel. Furthermore, the positive electrodes 7 can be conductively connected to the anodes of all the light-emitting elements Q.

[0169] In addition to the above-described content, the display panel according to the embodiments of the present application may also include other structures such as a cover plate alignment mark pattern 4, a GOA circuit, etc. This specification introduces only the structures and components related to the invention. For other structures and components included in the display panel, please refer to the introduction to the related art.

[0170] The embodiments of the present application provide a display device comprising the display panel as described above.

[0171] The structure contained in the display field can be referred to the previous description and is not repeated here.

[0172] The display device also includes a flexible circuit board FPC and a driver chip IC.

[0173] Alternatively, the display panel includes a display control unit, and the display device also includes a flexible printed circuit board FPC.

[0174] In the exemplary embodiment, when the substrate 1 of the display panel is a silicon substrate, an array base plate of the silicon substrate in the display device can integrate a pixel driver circuit array, a source driver, a gate driver, an emission control driver, an oscillator (OSC), a gamma register, and a display control unit integrated circuit on the same chip. This eliminates the need for additional driver chips, and the display panel is directly electrically connected to the flexible printed circuit board (FPC), which is referred to as one-chip technology. The display device manufactured with one-chip technology has higher integration and also has a smaller size, which is suitable for high-resolution display products such as virtual reality or augmented reality in the field of near-eye display.

[0175] In an exemplary embodiment, when the substrate of the display panel is the silicon substrate, the array base plate of the silicon substrate can also separate analog circuit parts such as the pixel driver circuit array, the source driver, the gate driver, and the emission driver (i.e., the EOA unit of the present application) from the OSC, the gamma register, the interface, and the display control unit, and the one-chip technology is changed to the two-chip technology. Here, the display panel needs to be electrically connected to the flexible printed circuit board (FPC) and the driver chip IC, respectively. Compared with one-chip technology products, this type of product has lower manufacturing process requirements and can use low-process technology to reduce production costs.

[0176] The display device can be a flexible display device (also known as a flexible screen) or a rigid display device (i.e., a display device that cannot be bent), and there are no restrictions. The display device can be an OLED display device, but also any other product or component with display functions, including OLED TVs, digital cameras, mobile phones, tablets, etc. The display device has the advantages of good display effect, long service life, and high stability.

[0177] The embodiments of the present application provide a portable device comprising two display devices as described above.

[0178] In the portable device, an orthographic projection of the lens layer 2 on the substrate 1 is located within a region defined by an outer contour of an orthographic projection of the cathode ring 31 on the substrate 1. In this way, in the subsequent process of adhering the cover plate 12, due to the unevenness of the surfaces of the lens layer 2, a contact area between the adhesive material and the lens layer 2 can be reduced and a contact area between the adhesive material and the flat area can be increased, thereby improving the adhesive force and adhesive stability, improving the quality of the display panel, and extending the service life of the portable device.

[0179] The above are only the specific embodiments of the present application, but the scope of the present application is not limited thereto. Any modifications or substitutions that can be easily conceived by those skilled in the art within the scope of technology disclosed in the present application should be covered within the scope of the present application. Therefore, the scope of the present application should be based on the scope of the claims.

Claims

[1] A display panel comprising a display area and a peripheral area surrounding the display area; the display panel further comprising: a substrate and a plurality of light-emitting elements arranged in an array on the substrate, the light-emitting elements being located at least in the display area; a conductive layer comprising a cathode ring and cathodes of the light-emitting elements, the cathode ring being located in the peripheral region and surrounding the display region; a lens layer located on a side of the light-emitting elements remote from the substrate and extending from the display area to the peripheral area; wherein an orthographic projection of the lens layer on the substrate is located within a region delimited by an outer contour of an orthographic projection of the cathode ring on the substrate. [2] A display panel according to claim 1, wherein the orthographic projection of the lens layer on the substrate is located within a region delimited by an inner contour of an orthographic projection of the cathode ring on the substrate, and an outer contour of the orthographic projection of the lens layer on the substrate is located in the peripheral region. [3] A display panel according to claim 2, wherein the outer contour of the orthographic projection of the lens layer on the substrate overlaps with the inner contour of the orthographic projection of the cathode ring on the substrate. [4] A display panel according to claim 2, wherein a gap is provided between the outer contour of the orthographic projection of the lens layer on the substrate and the inner contour of the orthographic projection of the cathode ring on the substrate. [5] The display panel according to claim 4, wherein the dimension of the gap in a direction from the display area to the peripheral area is less than or equal to a width of the cathode ring in the direction from the display area to the peripheral area. [6] The display panel according to claim 5, wherein the dimension of the gap in the direction from the display area to the peripheral area is greater than or equal to a dimension of one of the light-emitting elements in the direction from the display area to the peripheral area. [7] A display panel according to claim 4, wherein a part of the light-emitting elements are located in the peripheral region, and all the light-emitting elements located in the peripheral region are arranged in a circle along the edges of the display region; wherein the orthographic projection of the cathode ring on the substrate is located on a side remote from the display region of the orthographic projections of all the light-emitting elements located in the peripheral region on the substrate; wherein the orthographic projections of all the light-emitting elements located in the peripheral region on the substrate are within the orthographic projection of the lens layer on the substrate. [8] The display panel according to claim 4, wherein the peripheral region comprises a first peripheral portion, a second peripheral portion, a third peripheral portion, and a fourth peripheral portion, the fourth peripheral portion being disposed opposite to the first peripheral portion, the second peripheral portion being disposed opposite to the third peripheral portion, and the fourth peripheral portion comprising a bonding terminal; wherein a width of a part of the cathode ring located in the fourth peripheral portion in a direction from the display region to the peripheral region is less than or equal to the width of a part of the cathode ring located in the peripheral region excluding the fourth peripheral portion in the direction from the display region to the peripheral region. [9] The display panel according to claim 8, wherein the width of the part of the cathode ring located in the fourth circumferential portion in a direction from the display portion to the circumferential portion is smaller than the width of a part of the cathode ring located in the first circumferential portion in a direction from the display portion to the circumferential portion. [10] The display panel of claim 8, wherein a graph of the orthographic projection of the lens layer on the substrate comprises a first side edge and a second side edge arranged opposite each other, and an inner contour of a graph of the orthographic projection of the cathode ring on the substrate comprises a first edge and a second edge arranged opposite each other, wherein the first side edge and the first edge lie in the second circumferential portion, the second side edge and the second edge lie in the third circumferential portion; wherein a minimum distance between the first side edge and the first edge is different from a minimum distance between the second side edge and the second edge. [11] The display panel of claim 8, wherein a graph of the orthographic projection of the lens layer on the substrate comprises a first side edge and a second side edge arranged opposite to each other, and an inner contour of a graph of the orthographic projection of the cathode ring on the substrate comprises a first edge and a second edge arranged opposite to each other, the first side edge and the first edge being located in the second peripheral portion, the second side edge and the second edge being located in the third peripheral portion; wherein a minimum distance between the first side edge and the first edge is equal to a minimum distance between the second side edge and the second edge; wherein a width of a part of the cathode ring located in the second circumferential portion in the direction from the display portion to the circumferential portion differs from a width of a part of the cathode ring located in the third circumferential portion in the direction from the display portion to the circumferential portion. [12] The display panel of claim 8, wherein a graph of the orthographic projection of the lens layer on the substrate comprises a first side edge and a second side edge arranged opposite to each other, and an inner contour of a graph of the orthographic projection of the cathode ring on the substrate comprises a first edge and a second edge arranged opposite to each other, the first side edge and the first edge being located in the second peripheral portion, the second side edge and the second edge being located in the third peripheral portion; wherein a minimum distance between the first side edge and the first edge is equal to a minimum distance between the second side edge and the second edge; wherein a width of a part of the cathode ring located in the second circumferential portion in the direction from the display portion to the circumferential portion is equal to a width of a part of the cathode ring located in the third circumferential portion in the direction from the display portion to the circumferential portion. [13] The display panel according to claim 4, wherein the lens layer comprises a plurality of first lenses and a plurality of second lenses, all of the first lenses being arranged in the display region and all of the second lenses being arranged in the peripheral region; wherein a height of each of the second lenses in a direction perpendicular to a plane in which the substrate is located is less than or equal to a height of each of the first lenses in the direction perpendicular to the plane in which the substrate is located. [14] A display panel according to claim 13, wherein the height of each of the second lenses in the direction perpendicular to the plane in which the substrate is located gradually decreases in a direction from the display region to the peripheral region. [15] A display panel according to claim 13, wherein the shapes of graphs of orthographic projections of the second lenses on the substrate comprise ellipses, and the extending directions of the long axes of at least a part of the ellipses are different in the peripheral region. [16] A display panel according to claim 13, wherein the shapes of graphs of orthographic projections of the first lenses on the substrate comprise ellipses, and the extending directions of the long axes of at least a part of the ellipses in the display area are the same. [17] The display panel according to claim 13, wherein the structures and dimensions of the first lenses located on one side of a connecting line of the display area and the peripheral area are the same as the structures and dimensions of the second lenses located on the other side of the connecting line. [18] The display panel according to claim 17, wherein the shapes of orthographic projection graphs of the first lenses and the second lenses on the substrate both comprise ellipses, and the extending directions of the long axes of the orthographic projection graphs of the first lenses located on one side of the connecting line are the same as the extending directions of the long axes of the orthographic projection graphs of the second lenses located on the other side of the connecting line. [19] The display panel according to claim 4, wherein the display panel comprises a first encapsulation layer, a color filter layer, and a second encapsulation layer arranged in sequence, the first encapsulation layer covering the light-emitting elements and the cathode ring and extending to the peripheral region, the second encapsulation layer being located between the color filter layer and the lens layer, and the second encapsulation layer further extending to the peripheral region; wherein a roughness of at least a portion of a surface of the second encapsulation layer remote from the substrate is greater than a roughness of a surface of the first encapsulation layer remote from the substrate. [20] The display panel of claim 19, wherein the roughness of at least a portion of a surface of the second encapsulation layer remote from the substrate is greater than or equal to ten times the roughness of the surface of the first encapsulation layer remote from the substrate. [21] The display panel of claim 19, wherein the display panel further comprises an adhesive layer and a cover plate, wherein the adhesive layer is located on a side of the lens layer remote from the substrate, and the cover plate is located on a side of the adhesive layer remote from the lens layer; wherein an orthographic projection of the adhesive layer on the substrate lies within an orthographic projection of the second encapsulation layer on the substrate, and the adhesive layer is in direct contact with a portion of each of the second encapsulation layer and the lens layer. [22] The display panel according to claim 21, wherein an area of ​​a region in direct contact with the second encapsulation layer of a part of the adhesive layer located in the fourth peripheral portion is greater than or equal to an area of ​​a region in direct contact with the second encapsulation layer of a part of the adhesive layer located in the first peripheral portion. [23] The display panel according to claim 21, wherein the display panel further comprises a light-shielding layer, wherein the light-shielding layer is located in the peripheral region and surrounds the display region, and wherein the light-shielding layer and the color filter layer are arranged in the same layer; wherein the orthographic projection of the cathode ring on the substrate lies within an orthographic projection of the light-shielding layer on the substrate; the outer contour of the orthographic projection of the lens layer on the substrate falls within a region in which an orthographic projection of the light-shielding layer on the substrate is located, and an orthographic projection of an outer contour of the light-shielding layer on the substrate lies within an orthographic projection of the cover plate on the substrate. [24] The display panel of claim 23, wherein a shape of a graph of the orthographic projection of the cathode ring on the substrate comprises polygons with rounded corners. [25] The display panel according to claim 1, wherein the display panel further comprises a plurality of positive electrodes located in the peripheral region, wherein the positive electrodes and anodes of the light-emitting elements are arranged in the same layer; wherein the positive electrodes are electrically connected to the anodes and the positive electrodes are in direct contact with the cathode ring. [26] A display device comprising a display panel according to any one of claims 1 to 25. [27] A portable device comprising two display devices according to claim 26.

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