Display device, and display substrate and manufacturing method therefor

Abstract

Disclosed in the present application are a display device, and a display substrate and a manufacturing method therefor. In a first direction, the display substrate sequentially comprises a substrate, an intermediate layer provided with light-emitting structures, a first insulating protective layer, and a second insulating protective layer. In a direction parallel to the first direction, the display substrate comprises a holed area, a display area surrounding the holed area, a middle area which is arranged between the holed area and the display area, and a hollowed-out area, wherein the hollowed-out area partially overlaps the middle area in the first direction, and the hollowed-out area cuts through the second insulating protective layer in the first direction. The first direction is one that is perpendicular to the surface of the substrate and points to the second insulating protective layer. The present application uses the hollowed-out area to hollow out the second insulating protective layer, reducing pulling on the edge of an AA hole cuased by the shrinkage and warping of the second insulating protective layer, thus preventing film layer peeling, and thereby avoiding forming a water vapor intrusion channel and causing GDSH.

Description

Display device, display substrate, and manufacturing method thereof Technical Field

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

[0002] Display screens are moving towards the full-screen era. To increase the screen-to-body ratio, most products are designed as AA (Active Area) Hole products, with the camera punched in the AA area to increase the screen-to-body ratio. To improve light extraction efficiency, existing AMOLED (Active Matrix Organic Light Emitting Diode) displays are designed with two layers of OC (over coating) with different refractive indices on the top layer. This results in the OC layer in the AA Hole area being too thick. When the display screen is heated, the OC layer shrinks and warps, pulling on the edge of the AA Hole, causing peeling of the film layer, forming a channel for water vapor intrusion, and triggering GDSH (water vapor oxidation in the hole area caused by defects such as cracks, scratches, and top injuries caused by packaging or external forces).

[0003] Therefore, it is necessary to provide an improved display panel, display device, display substrate and manufacturing method thereof to solve the above problems.

[0004] Summary of the Invention

[0005] The purpose of the present application is to provide a display device, a display substrate and a manufacturing method thereof that prevent the initiation of GDSH.

[0006] The present application discloses a display substrate, which comprises, in a first direction, the following components in sequence:

[0007] substrate;

[0008] an intermediate layer, wherein the intermediate layer is provided with a light-emitting structure;

[0009] a first insulating protective layer;

[0010] a second insulating protective layer;

[0011] The display substrate includes, in parallel with the first direction:

[0012] Punch area;

[0013] a display area, the display area surrounding the punching area;

[0014] a middle area, the middle area being arranged between the punching area and the display area;

[0015] a hollowed-out area, wherein the hollowed-out area partially overlaps with the middle area in a first direction, and the hollowed-out area cuts off the second insulating protection layer in the first direction;

[0016] The first direction is perpendicular to one side of the substrate and points to the second insulating protection layer.

[0017] Optionally, a projection of the punching area in the first direction falls into the hollowing area.

[0018] Optionally, a projection of a boundary of the hollowed-out area in the first direction falls into the middle area.

[0019] Optionally, the hollowed-out area includes a first annular hollowed-out area, the projection of the inner boundary of the first hollowed-out area in the first direction falls into the punching area; the projection of the outer boundary of the first hollowed-out area in the first direction falls into the middle area.

[0020] Optionally, the hollowed-out area includes a second hollowed-out area in an annular shape, and projections of an inner boundary and an outer boundary of the second hollowed-out area in the first direction both fall into the middle area.

[0021] Optionally, the portion covered by the middle area from the perforated area to the display area includes a plurality of outer isolation columns, a retaining wall, a plurality of inner isolation columns and a display peripheral area in sequence.

[0022] Optionally, the projection of the hollowed-out area in the first direction covers the perforated area; the projection of the hollowed-out area in the first direction covers the middle area from the edge of the perforated area to the outer isolation column closest to the perforated area.

[0023] Optionally, the projection of the hollowed-out area in the first direction covers the perforated area; the projection of the hollowed-out area in the first direction covers the middle area from the edge of the perforated area to the inner isolation column farthest from the perforated area.

[0024] Optionally, the projection of the hollowed-out area in the first direction covers the punched-out area; the projection of the hollowed-out area in the first direction covers the middle area from the edge of the punched-out area to a portion of the display peripheral area.

[0025] Optionally, the portion of the second insulating protection layer truncated by the hollowed-out area is filled with the third insulating protection layer.

[0026] Optionally, the hollowed-out area includes a first annular hollowed-out area, the projection of the inner boundary of the first hollowed-out area in the first direction falls into the punching area; the projection of the outer boundary of the first hollowed-out area in the first direction falls between the outer isolation column farthest from the punching area and the outer isolation column second farthest from the punching area.

[0027] Optionally, the hollowed-out area includes:

[0028] a first annular hollowed-out area, wherein the projection of the inner boundary of the first hollowed-out area in the first direction falls into the perforated area; and the projection of the outer boundary of the first hollowed-out area in the first direction falls between two middle outer spacer pillars of the plurality of outer spacer pillars;

[0029] A second annular hollow area, the projection of the inner boundary of the second hollow area in the first direction falls between the inner isolation column closest to the retaining wall and the second inner isolation column closest to the retaining wall among the several inner isolation columns; the projection of the outer boundary of the second hollow area in the first direction falls between the display peripheral area and the inner isolation column closest to the display peripheral area.

[0030] Optionally, the hollowed-out area includes:

[0031] a first annular hollowed-out area, wherein the projection of the inner boundary of the first hollowed-out area in the first direction falls into the perforated area; and the projection of the outer boundary of the first hollowed-out area in the first direction falls between two middle outer spacer pillars of the plurality of outer spacer pillars;

[0032] A second hollowed-out area is annular, and the projection of the inner boundary of the second hollowed-out area in the first direction falls between the inner isolation column closest to the retaining wall and the second inner isolation column closest to the retaining wall among the several inner isolation columns; the projection of the outer boundary of the second hollowed-out area in the first direction falls within the display peripheral area of ​​the middle area.

[0033] Optionally, in the display area, the intermediate layer includes a plurality of pixel units, the first insulating protective layer is in a prism shape surrounding the pixel openings of the pixel units, the second insulating protective layer covers the first insulating protective layer, and the refractive index of the second insulating protective layer is greater than that of the first insulating protective layer.

[0034] Optionally, in the display area, the intermediate layer further includes an inductive capacitor, and the first insulating protection layer covers the inductive capacitor.

[0035] The present application also discloses a method for manufacturing a display substrate, which comprises:

[0036] forming an intermediate layer on one side of the substrate, wherein the intermediate layer includes a light-emitting layer and a touch layer;

[0037] forming a first insulating protective layer on a side of the intermediate layer away from the substrate;

[0038] forming a second insulating protective layer on a side of the first insulating protective layer away from the intermediate layer;

[0039] The display substrate is divided into a punching area, a display area, a middle area and a hollowing area; the display area surrounds the punching area; the middle area is arranged between the punching area and the display area; the hollowing area partially overlaps with the middle area in a first direction, and the second insulating protective layer covering the hollowing area in the first direction is removed.

[0040] Optionally, the projection of the hollowed-out area in the first direction covers the perforated area, and the projection of the boundary of the hollowed-out area in the first direction falls within the middle area that is greater than or equal to 30 μm away from the boundary of the perforated area.

[0041] Optionally, the method for manufacturing the display substrate further includes:

[0042] The removed second insulating protection layer portion covering the hollowed-out area in the first direction is filled to form a third insulating protection layer.

[0043] Optionally, the middle area is provided with a retaining wall, and the hollowed-out area includes a first annular hollowed-out area, the projection of the inner boundary of the first hollowed-out area in the first direction falls within the punching area that is greater than or equal to 30 μm away from the boundary of the punching area; the projection of the outer boundary of the first hollowed-out area in the first direction falls within the range from greater than or equal to 30 μm away from the boundary of the punching area to the side of the retaining wall close to the punching area.

[0044] Optionally, a plurality of inner isolation columns are provided on the side of the retaining wall away from the punching area; the hollowed-out area includes a second annular hollowed-out area, and the projection of the inner boundary of the second hollowed-out area in the first direction falls between the side of the retaining wall away from the punching area and the inner isolation columns closest to the display area; the projection of the outer boundary of the second hollowed-out area in the first direction falls between the inner isolation columns closest to the display area and the boundary of the display area.

[0045] The present application also discloses a display device, which includes the above-mentioned display substrate.

[0046] Compared with the related art, the hollowed-out area of ​​the present application hollows out the second insulating protective layer, reducing the pulling on the edge of the AA Hole when the second insulating protective layer shrinks and warps, preventing the film layer from peeling, forming a water vapor intrusion channel, and triggering GDSH.

[0047] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the specification and, together with the description, serve to explain the principles of the specification.

[0049] FIG. 1 is a schematic top view of a display substrate according to an embodiment of the present application.

[0050] FIG. 2 is a schematic diagram of the hierarchical structure of a display area in an embodiment of a display substrate of the present application.

[0051] FIG. 3 is a schematic diagram showing the hierarchical structure of the middle region and the perforated region in an embodiment of a display substrate of the present application.

[0052] FIG. 4 is a schematic top view of a touch layer in an embodiment of a display substrate structure of the present application.

[0053] FIG. 5 is a schematic diagram showing the hierarchical structure of the middle region and the perforated region in an embodiment of a display substrate of the present application.

[0054] FIG. 6 is a schematic diagram showing the hierarchical structure of the middle region and the perforated region in an embodiment of a display substrate of the present application.

[0055] FIG. 7 is a schematic diagram showing the hierarchical structure of the middle region and the perforated region in an embodiment of a display substrate of the present application.

[0056] FIG. 8 is a schematic diagram showing the hierarchical structure of the middle region and the perforated region in an embodiment of a display substrate of the present application.

[0057] FIG. 9 is a schematic diagram showing the hierarchical structure of the middle region and the perforated region in an embodiment of a display substrate of the present application.

[0058] FIG. 10 is a schematic diagram showing the hierarchical structure of the middle region and the perforated region in an embodiment of a display substrate of the present application.

[0059] FIG. 11 is a schematic diagram showing the hierarchical structure of the middle region and the perforated region in an embodiment of a display substrate of the present application.

[0060] FIG. 12 is a schematic diagram showing the hierarchical structure of the middle region and the perforated region in an embodiment of a display substrate of the present application. DETAILED DESCRIPTION

[0061] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with this specification. Rather, they are merely examples of apparatus and methods consistent with certain aspects of this specification, as detailed in the appended claims.

[0062] The terminology used in this application is for the purpose of describing specific embodiments only and is not intended to limit the present disclosure. Unless otherwise defined, technical or scientific terms used in this specification should have the same ordinary meaning as those having ordinary skill in the art to which this application belongs. The terms "first," "second," and similar terms used in this specification and claims do not denote any order, quantity, or importance, but are simply used to distinguish different components. Similarly, terms such as "a" or "an" do not denote a limitation of quantity, but rather indicate the presence of one. "Multiple" or "several" means two or more. Unless otherwise indicated, terms such as "front," "rear," "lower," and / or "upper" are used for convenience only and are not intended to limit the scope of the present disclosure to a specific location or spatial orientation. Terms such as "include" or "comprising" mean that the elements or objects listed before "include" or "comprising" include the elements or objects listed after "include" or "comprising" and their equivalents, and do not exclude other elements or objects. Terms such as "connected" or "connected" are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect.

[0063] The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the present disclosure. As used in this specification and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0064] As shown in FIG1 and FIG3 , the present application provides a display substrate. In a first direction F1, the display substrate includes:

[0065] Base 10;

[0066] an intermediate layer 20, wherein the intermediate layer 20 is provided with a light-emitting structure;

[0067] A first insulating protective layer 31;

[0068] A second insulating protective layer 32;

[0069] The display substrate includes:

[0070] Punching area 100;

[0071] A display area 300 , the display area 300 surrounding the punching area 100 ;

[0072] The middle area 200 is provided between the punching area 100 and the display area 300;

[0073] A hollow area 400 , wherein the hollow area 400 partially overlaps with the middle area 200 in the first direction F1 , and the hollow area 400 cuts off the second insulating protection layer 32 in the first direction F1 ;

[0074] The first direction F1 is perpendicular to a surface of the substrate 10 and points toward the second insulating protection layer 32 .

[0075] In this application, a hollowed-out area 400 is provided on the display substrate. The hollowed-out area 400 partially overlaps the middle area 200 in the first direction F1. The portion of the second insulating protective layer 32 covering the hollowed-out area 400 is removed to reduce the pulling of the insulating protective layer on the edge of the perforated area 100 when the display substrate is heated, thereby preventing peeling of the film layer and thus preventing the initiation of GDSH.

[0076] The following will describe in detail the various embodiments of the present application that are consistent with the above-mentioned creative concepts.

[0077] The first direction F1 of the present application is a direction perpendicular to the display surface and directed from the display substrate to the display side.

[0078] As shown in FIG. 1 to FIG. 3 , the present application discloses a display substrate.

[0079] The display substrate can be divided into a perforated area 100, a display area 300, and an intermediate area 200 located between the display area 300 and the perforated area 100 within the display plane. The intermediate area 200 surrounds the perforated area 100, and the display area 300 surrounds the perforated area 100. The area covered by the perforated area 100 corresponds to the AA hole.

[0080] The display substrate can be divided into a base 10, an intermediate layer 20 and an insulating protective layer 30 in the first direction F1. The base can be a rigid base. The rigid base can be, for example, a glass base or a PMMA (Polymethyl methacrylate) base. The base 10 can also be a flexible base. For example, the flexible base can be, for example, a PET (Polyethylene terephthalate) base, a PI (Polyimide) base or a PEN (Polyethylene naphthalate two formic acid glycol ester) base. The base can also be a composite base composed of multiple layers of material. It is understandable that there are many types of base 10, which can be selected and set according to actual needs, and the embodiments of the present disclosure do not limit this.

[0081] As shown in Figures 1 to 4, in an optional embodiment, the display area 300 is located in the area covered by the orthographic projection in the first direction F1. The intermediate layer 20 of the display substrate includes a control layer 40, a light-emitting layer 50, and a touch layer 60 in the first direction F1. The control layer 40, the light-emitting layer 50, and the touch layer 60 are arranged sequentially from the base 10 toward the insulating protective layer 30.

[0082] The control layer 40 includes a control structure for the display substrate (not shown). This control structure controls the operation of the light-emitting layer 50. Optionally, the control structure may be a pixel control circuit or other control structure. The pixel control circuit includes a number of transistors, capacitors, and metal wires. The pixel control circuit may be a 2T1C control circuit, a 7T1C control circuit, or a 16T3C control circuit, as long as it can control the operation of the light-emitting layer 50.

[0083] The transistor includes a control electrode, a first electrode, and a second electrode. The transistors used in this application can be triodes, thin film transistors, field effect transistors, or other devices with the same characteristics. In actual operation, when the transistor is a triode, the control electrode can be the base, the first electrode can be the collector, and the second electrode can be the emitter; or, the control electrode can be the base, the first electrode can be the emitter, and the second electrode can be the collector. In actual operation, when the transistor is a thin film transistor or field effect transistor, the control electrode can be the gate, the first electrode can be the drain, and the second electrode can be the source; or, the control electrode can be the gate, the first electrode can be the source, and the second electrode can be the drain.

[0084] The control layer 40 is connected to the light-emitting layer 50 via a conductive structure. The light-emitting layer 50 includes a pixel defining layer 51, which includes a plurality of openings 511. An anode 52, a light-emitting structure layer 53, and a cathode 54 are provided in the opening 511. The anode 52, the light-emitting structure layer 53, and the cathode 54 are stacked in the opening 511. The structure of the anode 52 can be a composite structure composed of a transparent conductive oxide film / a metal film / a transparent conductive oxide film stacked in sequence. The material of the transparent conductive oxide film can be, for example, any one of ITO (Indium Tin Oxide) and IZO (Indium Zinc Oxide), and the material of the metal film can be, for example, any one of gold (Au), silver (Ag), nickel (Ni), and platinum (Pt). In some examples, the structure of the anode 52 can be a composite structure of ITO / Ag / ITO. For another example, the structure of the anode 52 can also be a single-layer structure, and the material of the single-layer structure can be any one of ITO, IZO, Au, Ag, Ni, and Pt. The material of the cathode 54 can be any one of aluminum (Al), silver (Ag) and magnesium (Mg), or any one of a magnesium-silver alloy and an aluminum-lithium alloy. The light-emitting structure layer 53 can be a light-emitting structure layer 53 that emits green light, a light-emitting structure layer 53 that emits blue light, or a light-emitting structure layer 53 that emits red light. The three light-emitting structure layers 53 that emit different light are regularly distributed in a plane in several opening areas 511 on the pixel defining layer 51. The three light-emitting structure layers 53 that emit different light and are distributed in a specific array are controlled by the control structure of the control layer 40 to realize the display function. An encapsulation layer 55 is provided on the side of the cathode 54 away from the light-emitting structure layer 53. The encapsulation layer 55 can be composed of only one layer of inorganic material, or only one layer of organic material, or can be formed by stacking several layers of inorganic material and organic material. In this embodiment, the encapsulation layer 55 includes a first inorganic encapsulation layer 551 disposed on the side of the cathode 54 away from the light-emitting structure layer 53. The encapsulation layer 55 also includes an organic encapsulation layer 552 disposed on the side of the first inorganic encapsulation layer 551 away from the cathode 54. The encapsulation layer 55 also includes a second inorganic encapsulation layer 553 disposed on the side of the organic encapsulation layer 552 away from the first inorganic encapsulation layer 551. The first inorganic encapsulation layer 551 and the second inorganic encapsulation layer 553 can be made of an inorganic insulating material such as nitride, oxide, oxynitride, nitrate, carbide, or any combination thereof. The organic encapsulation layer 552 can be made of an organic insulating material such as acrylic, hexamethyldisiloxane, polyacrylate, polycarbonate, or polystyrene. The organic encapsulation layer 552 can be formed from an organic material using an inkjet printing process. The first inorganic encapsulation layer 551 and the second inorganic encapsulation layer 553 can be formed using a chemical vapor deposition process.

[0085] The touch layer 60 is disposed on the side of the light-emitting layer 50 facing away from the control layer 40. The touch layer 60 includes a buffer layer 61 disposed on the side of the light-emitting layer 50 facing away from the control layer 40. The buffer layer 61 can be formed of an insulating material such as silicon nitride. In this embodiment, the buffer layer 61 is disposed on the side of the second inorganic encapsulation layer 553 facing away from the organic encapsulation layer 552. The touch layer 60 also includes a first electrode layer 62 disposed on the side of the buffer layer 61 facing away from the second inorganic encapsulation layer 553. The touch layer 60 also includes a touch insulating layer 63 disposed on the side of the first electrode layer 62 facing away from the buffer layer 61 and covering the first electrode layer 62. The touch layer 60 also includes a second electrode layer 65 disposed on the side of the touch insulating layer 63 facing away from the first electrode layer 62. The second electrode layer 65 includes a plurality of first electrodes 651 arranged along a second direction F2 and a plurality of second electrodes 652 arranged along a third direction F3. The second direction F2 intersects the third direction F3. The plurality of first electrodes 651 arranged along the second direction F2 are directly connected within the second electrode layer 65. The plurality of second electrodes 652 arranged along the third direction F3 are disconnected within the second electrode layer 65 at locations intersecting the first electrodes 651. The plurality of second electrodes 652 arranged along the third direction F3 are connected through the first electrode layer 62 at locations intersecting the first electrodes 651. The touch layer 60 includes a conductive bridge layer 64 that penetrates the touch insulation layer 63. The bridge layer 64 connects the second electrodes 652 and the first electrode layer 62, allowing adjacent second electrodes 652 to communicate through the first electrode layer 62. In this way, the plurality of first electrodes 651 arranged along the second direction F2 and the plurality of second electrodes 652 arranged along the third direction F3 form a sensing capacitor at the intersection, enabling touch functionality. The orthographic projections of the intersections of the plurality of first electrodes 651 arranged along the second direction F2 and the plurality of second electrodes 652 arranged along the third direction F3 in the first direction F1 do not overlap with the plurality of openings 511 in the pixel defining layer 51 . That is, the projections of the sensing capacitors in the first direction F1 do not overlap with the openings 511 .

[0086] An insulating protective layer 30 is provided on the side of the touch layer 60 facing away from the light-emitting layer 50. The insulating protective layer 30 includes a first insulating protective layer 31 provided on the side of the second electrode layer 65 facing away from the touch insulating layer 63. The projection of the first insulating protective layer 31 in the first direction F1 does not overlap with the plurality of openings 511 in the pixel defining layer 51. The projection of the first insulating protective layer 31 in the first direction F1 surrounds the plurality of openings 511 in the pixel defining layer 51. The first insulating protective layer 31 covers the intersection of the plurality of first electrodes 651 arranged along the second direction F2 and the plurality of second electrodes 652 arranged along the third direction F3. In other words, the insulating protective layer 31 covers the sensing capacitor. The first insulating protective layer 31 has a prismatic morphology. A second insulating protective layer 32 is provided on the side of the first insulating protective layer 31 facing away from the touch layer 60. The second insulating protective layer 32 covers the first insulating protective layer 31 and the touch insulating layer 63. The second insulating protective layer 32 has a higher refractive index than the first insulating protective layer 31. This configuration allows the light emitted from the light emitting structure layer 53 in the opening area 511 to be totally reflected on the surface of the first insulating protective layer 31 , thereby improving the light extraction efficiency of the display substrate.

[0087] As shown in Figures 1 to 4, in an optional embodiment, the middle area 200 is in the area covered by the positive projection of the first direction F1, in a plane perpendicular to the first direction F1, and points from the perforated area 100 to the display area 300, including a plurality of outer isolation columns 210, a retaining wall 220, a plurality of inner isolation columns 230 and a display peripheral area 240.

[0088] The display peripheral area 240 includes a portion of the structure extending from the display area 300 , such as the pixel defining layer 51 , anode 52 , light emitting structure layer 53 , cathode 54 and encapsulation layer 55 in the light emitting layer 50 (not all of which are shown in the figure).

[0089] The number of the plurality of inner isolation columns 230 can be determined according to demand. Optionally, the number of the plurality of inner isolation columns 230 can be two, three, four, five, six, etc. In the present embodiment, the number of the plurality of inner isolation columns 230 is three. The inner isolation column 230 includes an extended light-emitting structure layer 53 and a first inorganic encapsulation layer 551. The inner isolation column 230 also includes a pad 231, which is arranged below the light-emitting structure layer 53, thereby raising the light-emitting structure layer 53 within the inner isolation column 230 in the first direction F1, so that the light-emitting structure layer 53 within the inner isolation column 230 is disconnected from the light-emitting structure layer 53 within the non-inner isolation column 230. In this way, pollution such as water vapor is blocked at the inner isolation column 230 and cannot spread along the light-emitting structure layer 53 to the display substrate. The first inorganic encapsulation layer 551 covers the light-emitting structure layer 53, thereby forming the inner isolation column 230 structure. The pad 231 may be a single metal structure or a structure composed of multiple metals. For example, the pad 231 may be a stacked structure of titanium / aluminum / titanium.

[0090] The number of retaining walls 220 can be determined according to demand. Optionally, the retaining walls 220 can be one, two or three, etc. The main part of the retaining wall 220 can be formed together when the pixel defining layer 51 is formed. When preparing the pixel defining layer 51, a protrusion can be prepared at the position of the retaining wall 220. The length of the protrusion in the first direction F1 is greater than the length of the inner isolation column 230 and the outer isolation column 210 in the first direction F1. When the organic encapsulation layer 552 is prepared by inkjet printing in the display area 300, the organic substance will flow. The setting of the retaining wall 220 blocks the organic substance on the side of the retaining wall 220 away from the perforated area 100, preventing the overflow of the organic substance. The protrusion is sequentially covered with the light-emitting structure layer 53, the first inorganic encapsulation layer 551, the organic encapsulation layer 552 and the second inorganic encapsulation layer 553.

[0091] The number of the plurality of outer spacer columns 210 can be determined according to demand. Optionally, the number of the plurality of outer spacer columns 210 can be two, three, four, five, six, etc. In the present embodiment, the number of the plurality of outer spacer columns 210 is three. The outer spacer columns 210 include an extended light-emitting structure layer 53, a first inorganic encapsulation layer 551, an organic encapsulation layer 552, and a second inorganic encapsulation layer 553. The outer spacer columns 210 also include a pad 231, which is arranged below the light-emitting structure layer 53, thereby raising the light-emitting structure layer 53 in the outer spacer columns 210 in the first direction F1, so that the light-emitting structure layer 53 in the outer spacer columns 210 is disconnected from the light-emitting structure layer 53 in the non-external spacer columns 210. In this way, pollution such as water vapor is blocked at the outer spacer columns 210 and cannot spread along the light-emitting structure layer 53 to the display substrate. A first inorganic encapsulation layer 551 covers the light-emitting structure layer 53, an organic encapsulation layer 552 covers the first inorganic encapsulation layer 551, and a second inorganic encapsulation layer 553 covers the organic encapsulation layer 552, thereby forming the outer spacer 210 structure. The spacer 231 can be a single metal structure or a combination of multiple metals. For example, the spacer 231 can be a stacked structure of titanium / aluminum / titanium.

[0092] The perforated area 100 includes, from bottom to top, a substrate 10, a light-emitting structure layer 53, a first inorganic encapsulation layer 551, an organic encapsulation layer 552, and a second inorganic encapsulation layer 553. The insulating protective layer 30 covers the entire display substrate. The first insulating protective layer 31 located in the middle area 200 and the perforated area 100 is not configured as a prism morphology, but rather covers the entire middle area 200 and the perforated area 100. The second insulating protective layer 32 also covers the entire middle area 200 and the perforated area 100.

[0093] The display substrate further includes a hollow area 400, which partially overlaps the middle area 200 in the first direction F1 and cuts off the second insulating protection layer 32 in the first direction F1. That is, the second insulating protection layer 32 covered by the hollow area 400 in the first direction F1 is removed.

[0094] As shown in FIG3 , in an optional embodiment, the projection of the perforated area 100 in the first direction F1 falls into the hollowed-out area 400. That is, the hollowed-out area 400 covers the entire perforated area 100 and also covers a portion of the middle area 200 surrounding the perforated area 100. Optionally, the projection of the boundary of the hollowed-out area 400 in the first direction F1 falls into the middle area 200. That is, the hollowed-out area 400 covers the entire perforated area 100 and also covers a circle of the middle area 200 surrounding the perforated area 100.

[0095] 3 , in an optional embodiment, the projection of the hollow area 400 in the first direction F1 covers the perforated area 100. The projection of the hollow area 400 in the first direction F1 covers the middle area 200 from the edge of the perforated area 100 to the outer isolation pillar 210 closest to the perforated area 100.

[0096] 5 , in an alternative embodiment, the projection of the hollow area 400 in the first direction F1 covers the perforated area 100. The projection of the hollow area 400 in the first direction F1 covers the middle area 200 from the edge of the perforated area 100 to the inner isolation pillar 230 farthest from the perforated area 100.

[0097] 6 , in an optional embodiment, the projection of the hollow area 400 in the first direction F1 covers the perforated area 100 . The projection of the hollow area 400 in the first direction F1 covers the middle area 200 from the edge of the perforated area 100 to a portion of the display peripheral area 240 .

[0098] 7 to 9 , in an optional embodiment, the portion of the second insulating protection layer 32 truncated by the hollowed area 400 is filled with a third insulating protection layer 33. The third insulating protection layer 33 can be filled by an inkjet printing process or an etching process.

[0099] As shown in FIG10 , in an optional embodiment, the hollow area 400 includes a first hollow area 410 in the form of an annular hole, and the projection of the inner boundary of the first hollow area 410 in the first direction F1 falls into the punching area 100. The projection of the outer boundary of the first hollow area 410 in the first direction F1 falls into the middle area 200. In this way, the cutting line when the punching area 100 is punched can be avoided, and the impact of the film sticking / tearing process on the punching area 100 during cutting can be prevented. The hollow area 400 includes a second hollow area 420 in the form of an annular hole, and the projections of the inner and outer boundaries of the second hollow area 420 in the first direction F1 both fall into the middle area 200. In this way, the second hollow area 420 can release the internal stress of the film layer, reduce the pulling of the edge of the AA hole caused by the contraction of the second insulating protective layer 32, resulting in peeling of the film layer, forming a water vapor intrusion channel, and triggering GDSH.

[0100] As shown in FIG10 , in an optional embodiment, the hollowed-out area 400 includes a first annular hollowed-out area 410. The projection of the inner boundary of the first hollowed-out area 410 in the first direction F1 falls within the perforated area 100. The projection of the outer boundary of the first hollowed-out area 410 in the first direction F1 falls between the outer spacer 210 farthest from the perforated area 100 and the outer spacer 210 second farthest from the perforated area 100.

[0101] As shown in FIG11 , in an optional embodiment, the hollowed-out area 400 includes an annular first hollowed-out area 410. The projection of the inner boundary of the first hollowed-out area 410 in the first direction F1 falls within the punching area 100. The projection of the outer boundary of the first hollowed-out area 410 in the first direction F1 falls between two middle outer spacer pillars 210 of the plurality of outer spacer pillars 210.

[0102] The hollowed-out area 400 further includes an annular second hollowed-out area 420. The projection of the inner boundary of the second hollowed-out area 420 in the first direction F1 falls between the inner spacer 230 closest to the retaining wall 220 and the inner spacer 230 second closest to the retaining wall 220 among the inner spacer pillars 230. The projection of the outer boundary of the second hollowed-out area 420 in the first direction F1 falls between the display peripheral area 240 and the inner spacer pillar closest to the display peripheral area 240.

[0103] As shown in FIG12 , in an optional embodiment, the hollowed-out area 400 includes a first annular hollowed-out area 410. The projection of the inner boundary of the first hollowed-out area 410 in the first direction F1 falls within the punching area 100. The projection of the outer boundary of the first hollowed-out area 410 in the first direction F1 falls between two middle outer spacer pillars 210 of the plurality of outer spacer pillars 210.

[0104] The hollowed-out area 400 further includes an annular second hollowed-out area 420. The projection of the inner boundary of the second hollowed-out area 420 in the first direction F1 falls between the inner spacer pillar 230 closest to the retaining wall 220 and the inner spacer pillar 230 second closest to the retaining wall 220. The projection of the outer boundary of the second hollowed-out area 420 in the first direction F1 falls within the display peripheral area 240 of the middle area 200.

[0105] The present application also discloses a method for manufacturing a display substrate, comprising:

[0106] An intermediate layer 20 is formed on one side of the substrate 10 . The intermediate layer 20 includes a light emitting layer 50 and a touch layer 60 .

[0107] A first insulating protection layer 31 is formed on a side of the intermediate layer 20 away from the substrate 10 .

[0108] A second insulating protection layer 32 is formed on a side of the first insulating protection layer 31 away from the intermediate layer 20 .

[0109] The display substrate is divided into a perforated area 100, a display area 300, a middle area 200, and a hollowed area 400. The display area 300 surrounds the perforated area 100. The middle area 200 is disposed between the perforated area 100 and the display area 300. The hollowed area 400 partially overlaps with the middle area 200 in the first direction F1. The second insulating protective layer 32 covering the hollowed area 400 in the first direction F1 is removed.

[0110] As shown in Figures 3 to 6, in an optional embodiment, the projection of the hollow area 400 in the first direction F1 covers the punching area 100, and the projection of the boundary of the hollow area 400 in the first direction F1 falls into the middle area 200 which is greater than or equal to 30 μm away from the boundary of the punching area 100.

[0111] As shown in FIG. 7 to FIG. 9 , in an optional embodiment, the portion of the second insulating protection layer 32 removed and covering the hollow area 400 in the first direction F1 is filled to form a third insulating protection layer 33 .

[0112] As shown in Figures 10 to 12, in an optional embodiment, a retaining wall 220 is provided in the middle area, and the hollowed area 400 includes an annular first hollowed area 410. The projection of the inner boundary of the first hollowed area 410 in the first direction F1 falls within the perforated area 100, which is greater than or equal to 30 μm from the boundary of the perforated area 100. The projection of the outer boundary of the first hollowed area 410 in the first direction F1 falls within the range from greater than or equal to 30 μm from the boundary of the perforated area 100 to the side of the retaining wall 220 close to the perforated area 100.

[0113] As shown in Figures 10 to 12, in an optional embodiment, a plurality of inner spacer pillars 230 are disposed on the side of the retaining wall 220 away from the perforated area 100. The hollowed-out area 400 includes an annular second hollowed-out area 420. The projection of the inner boundary of the second hollowed-out area 420 in the first direction F1 falls between the side of the retaining wall 220 away from the perforated area 100 and the inner spacer pillars 230 closest to the display area 300. The projection of the outer boundary of the second hollowed-out area 420 in the first direction F1 falls between the inner spacer pillars 230 closest to the display area 300 and the boundary of the display area 300.

[0114] The present application also discloses a display device, which includes the above-mentioned display substrate.

[0115] The hollowed-out area of ​​the present application hollows out the second insulating protective layer, reducing the pulling on the edge of the AA Hole when the second insulating protective layer shrinks and warps, preventing the film layer from peeling, forming a water vapor intrusion channel, and triggering GDSH.

[0116] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the present invention and practice of the invention claimed herein. This specification is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of this specification and include common knowledge or customary techniques in the art not claimed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present invention being indicated by the following claims.

[0117] It should be understood that the present description is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present description is limited only by the appended claims.

[0118] The above description is only a preferred embodiment of this specification and is not intended to limit this specification. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this specification should be included in the scope of protection of this specification.

Claims

1. A display substrate, characterized in that: In the first direction, the display substrate includes: substrate; An intermediate layer, wherein the intermediate layer is provided with a light-emitting structure; A first insulating protective layer; A second insulating protective layer; The display substrate includes, in parallel with the first direction: Punch area; A display area, the display area surrounding the punching area; A middle area, the middle area is arranged between the perforated area and the display area; a hollowed-out area, wherein the hollowed-out area partially overlaps with the middle area in a first direction, and the hollowed-out area cuts off the second insulating protection layer in the first direction; The first direction is perpendicular to one side of the substrate and points to the second insulating protection layer.

2. The display substrate according to claim 1, characterized in that: The projection of the punching area in the first direction falls into the hollowing area.

3. The display substrate according to claim 2, characterized in that: A projection of a boundary of the hollowed-out area in the first direction falls into the middle area.

4. The display substrate according to claim 1, characterized in that: The hollowed-out area includes a first hollowed-out area in an annular shape, the projection of the inner boundary of the first hollowed-out area in the first direction falls into the punching area; the projection of the outer boundary of the first hollowed-out area in the first direction falls into the middle area.

5. The display substrate according to claim 4, characterized in that: The hollowed-out area includes a second hollowed-out area in an annular shape, and projections of an inner boundary and an outer boundary of the second hollowed-out area in the first direction both fall into the middle area.

6. The display substrate according to claim 1, characterized in that: The portion covered by the middle area, which points from the perforated area to the display area, includes a plurality of outer spacer columns, a retaining wall, a plurality of inner spacer columns and a display peripheral area in sequence.

7. The display substrate according to claim 6, characterized in that: The projection of the hollowed-out area in the first direction covers the perforated area; the projection of the hollowed-out area in the first direction covers the middle area from the edge of the perforated area to the outer isolation column closest to the perforated area.

8. The display substrate according to claim 6, characterized in that: The projection of the hollowed-out area in the first direction covers the perforated area; the projection of the hollowed-out area in the first direction covers the middle area from the edge of the perforated area to the inner isolation column farthest from the perforated area.

9. The display substrate according to claim 6, characterized in that: The projection of the hollowed-out area in the first direction covers the perforated area; the projection of the hollowed-out area in the first direction covers the middle area from the edge of the perforated area to a portion of the display peripheral area.

10. The display substrate according to any one of claims 1 to 3 or claims 6 to 9, characterized in that: The portion of the second insulating protection layer truncated by the hollowed-out area is filled with a third insulating protection layer.

11. The display substrate according to claim 6, characterized in that: The hollowed-out area includes a first annular hollowed-out area, the projection of the inner boundary of the first hollowed-out area in the first direction falls into the perforated area; the projection of the outer boundary of the first hollowed-out area in the first direction falls between the outer isolation column farthest from the perforated area and the outer isolation column second farthest from the perforated area.

12. The display substrate according to claim 6, characterized in that: The hollowed-out area includes: A first hollowed-out area in an annular shape, wherein the projection of the inner boundary of the first hollowed-out area in the first direction falls into the perforated area; and the projection of the outer boundary of the first hollowed-out area in the first direction falls between two middle outer isolation pillars of the plurality of outer isolation pillars; A second hollowed-out area is in an annular shape, and the projection of the inner boundary of the second hollowed-out area in the first direction falls between the inner isolation column closest to the retaining wall and the second inner isolation column closest to the retaining wall among the plurality of inner isolation columns; the projection of the outer boundary of the second hollowed-out area in the first direction falls between the display peripheral area and the inner isolation column closest to the display peripheral area.

13. The display substrate according to claim 6, characterized in that: The hollowed-out area includes: A first hollowed-out area in an annular shape, wherein the projection of the inner boundary of the first hollowed-out area in the first direction falls into the perforated area; and the projection of the outer boundary of the first hollowed-out area in the first direction falls between two middle outer isolation pillars of the plurality of outer isolation pillars; A second hollowed-out area is annular, and the projection of the inner boundary of the second hollowed-out area in the first direction falls between the inner isolation column closest to the retaining wall and the second inner isolation column closest to the retaining wall among the plurality of inner isolation columns; the projection of the outer boundary of the second hollowed-out area in the first direction falls within the display peripheral area of ​​the middle area.

14. The display substrate according to claim 1, characterized in that: In the display area, the middle layer includes a plurality of pixel units, the first insulating protective layer is in a prism shape surrounding the pixel openings of the pixel units, the second insulating protective layer covers the first insulating protective layer, and the refractive index of the second insulating protective layer is greater than that of the first insulating protective layer.

15. The display substrate according to claim 14, characterized in that: In the display area, the middle layer further includes an inductive capacitor, and the first insulating protection layer covers the inductive capacitor.

16. A method for manufacturing a display substrate, characterized in that: include: forming an intermediate layer on one side of the substrate, wherein the intermediate layer includes a light-emitting layer and a touch-control layer; forming a first insulating protective layer on a side of the intermediate layer away from the substrate; forming a second insulating protective layer on a side of the first insulating protective layer away from the intermediate layer; The display substrate is divided into a perforated area, a display area, a middle area and a hollowed-out area; the display area surrounds the perforated area; the middle area is arranged between the perforated area and the display area; the hollowed-out area partially overlaps with the middle area in a first direction, and the second insulating protective layer covering the hollowed-out area in the first direction is removed.

17. The method for manufacturing a display substrate according to claim 16, wherein: The projection of the hollowed-out area in the first direction covers the perforated area, and the projection of the boundary of the hollowed-out area in the first direction falls within the middle area which is greater than or equal to 30 μm away from the boundary of the perforated area.

18. The method for manufacturing a display substrate according to claim 16 or 17, characterized in that: The method for manufacturing the display substrate further includes: The removed second insulating protection layer portion covering the hollowed-out area in the first direction is filled to form a third insulating protection layer.

19. The method for manufacturing a display substrate according to claim 16, wherein: The middle area is provided with a retaining wall, and the hollowed-out area includes a first hollowed-out area in a ring shape, and the projection of the inner boundary of the first hollowed-out area in the first direction falls into the punching area which is greater than or equal to 30 μm away from the boundary of the punching area; the projection of the outer boundary of the first hollowed-out area in the first direction falls within the range from greater than or equal to 30 μm away from the boundary of the punching area to the side of the retaining wall close to the punching area.

20. The method for manufacturing a display substrate according to claim 19, wherein: A plurality of inner isolation columns are arranged on the side of the retaining wall away from the perforated area; the hollowed-out area includes a second annular hollowed-out area, and the projection of the inner boundary of the second hollowed-out area in the first direction falls between the side of the retaining wall away from the perforated area and the inner isolation columns closest to the display area; the projection of the outer boundary of the second hollowed-out area in the first direction falls between the inner isolation columns closest to the display area and the boundary of the display area.

21. A display device, characterized in that: The display device comprises the display substrate according to any one of claims 1-15.

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