Display panel and display device

Abstract

The application provides a display panel and a display device. The display panel comprises a display area, an aperture area and a transition area arranged between the display area and the aperture area. The display panel further comprises a substrate, a light-emitting functional layer and a first isolation structure. The first isolation structure is arranged on one side of the substrate and located in the transition area. The first isolation structure comprises a first support part, a second support part and a first blocking part arranged in layers, and the first blocking part covers the surface of the second support part away from the substrate. The first support part and the second support part are provided with a via hole, the via hole penetrates through the first support part and the second support part, and the first blocking part fills the via hole. The material of the first blocking part comprises an insulating material, and the electric field between the first isolation structure and the first electrode layer is blocked by arranging the first blocking part with the insulating material, so as to prevent the chemical substances in the polarizer from penetrating into the display panel due to the attraction of the electric field and corroding the encapsulation layer in the display panel, thereby prolonging the service life of the display panel.

Description

Technical Field

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

[0002] As people increasingly demand higher screen-to-body ratios for electronic devices, current smart terminal products are evolving towards full-screen display technology. The mainstream trend in full-screen display technology is to incorporate openings in the display area to serve as light-transmitting zones for functional components such as cameras and fingerprint recognition. However, existing punch-hole screen electronic devices are prone to exhibiting black spots or defects in the display area around the opening during product reliability testing, failing to meet user requirements.

[0003] Therefore, current display substrates and display devices still need improvement. Summary of the Invention

[0004] The purpose of this invention is to provide a display panel and display device to solve the problem that black spots and other defects easily appear in the display area around the opening area of ​​existing display products.

[0005] To achieve the above objectives, the present invention provides a display panel, the display panel including a display area, an opening area, and a transition area disposed between the display area and the opening area. The display panel further includes a substrate, a light-emitting functional layer, and a first isolation structure. In the opening area, a light-transmitting hole is formed on the substrate. The light-emitting functional layer is disposed on one side of the substrate, with at least a portion of the light-emitting functional layer located in the display area. The first isolation structure is disposed on one side of the substrate and located in the transition area.

[0006] The first isolation structure includes a first support portion, a second support portion, and a first blocking portion. The first support portion is disposed on one side of the substrate. The second support portion is disposed on the side of the first support portion opposite to the substrate. The first blocking portion is disposed on the side of the second support portion opposite to the substrate, and the first blocking portion covers the surface of the second support portion opposite to the substrate. Through-holes are formed in both the first and second support portions, and the first blocking portion fills the through-holes. The material of the first blocking portion includes an insulating material.

[0007] Further, the orthographic projection of the second support portion on the substrate is located within the orthographic projection range of the first blocking portion on the substrate. Preferably, the orthographic projection of the first blocking portion on the substrate is located within the orthographic projection range of the first support portion on the substrate. Preferably, the distance between the orthographic projection boundary of the first blocking portion on the substrate and the orthographic projection boundary of the surface of the second support portion away from the first support portion on the substrate is 3000-4000 angstroms.

[0008] Further, the thickness of the first support portion is less than the thickness of the second support portion. The thickness of the first support portion is less than the thickness of the first blocking portion. Preferably, the thickness of the first blocking portion is less than the thickness of the second support portion. Preferably, the thickness of the second support portion is 4500-5500 angstroms. Preferably, the cross-sectional shape of the second support portion parallel to the display panel stacking direction is trapezoidal. Preferably, the cross-sectional shape of the first blocking portion parallel to the display panel stacking direction is sloped.

[0009] Furthermore, the materials of the first support portion and the second support portion include metals. Preferably, the material of the first support portion includes at least one selected from titanium, gold, molybdenum, and platinum. Preferably, the material of the second support portion includes at least one selected from aluminum, copper, or silver. Preferably, the material of the first blocking portion includes an organic material.

[0010] Further, the light-emitting functional layer extends from the display area to the transition area and covers the surface of the first isolation structure facing away from the substrate. Preferably, the display panel further includes a first electrode layer, which is disposed on the side of the light-emitting functional layer facing away from the substrate and extends from the display area to the transition area. Preferably, the display panel further includes a pixel defining layer and a second electrode layer. The pixel defining layer is disposed on one side of the substrate and encloses a plurality of pixel openings in the display area. The second electrode layer is located between the pixel defining layer and the substrate, and includes a plurality of first electrodes, with a portion of the surface of the second electrodes exposed in the corresponding pixel openings. In the display area, the light-emitting functional layer is located in the corresponding pixel opening and covers the exposed surface of the corresponding second electrode.

[0011] Further, the display panel also includes a second isolation structure, which is disposed on one side of the substrate and located in the transition region. The second isolation structure is located on the side of the first isolation structure near the opening area. Preferably, the second isolation structure includes a third support portion, a fourth support portion, and a second blocking portion. The third support portion is disposed on one side of the substrate. The fourth support portion is disposed on the side of the third support portion facing away from the substrate. The second blocking portion is disposed on the side of the fourth support portion facing away from the substrate. Preferably, the materials of the third support portion, the fourth support portion, and the second blocking portion all include metal. Preferably, the material of the third support portion is at least partially the same as the material of the second blocking portion. Preferably, the third support portion and the first support portion are disposed in the same layer, and the fourth support portion and the second support portion are disposed in the same layer.

[0012] The present invention also provides a method for manufacturing a display panel, the method comprising: providing a substrate, forming a light-transmitting hole on the substrate, obtaining an opening area in the region where the light-transmitting hole is located, a transition area connected to the opening area, and a display area connected to the transition area; manufacturing a first isolation structure on the substrate located in the transition area; and manufacturing a light-emitting functional layer on one side of the substrate and the first isolation structure.

[0013] The step of fabricating a first isolation structure on the substrate located in the transition region includes: fabricating a first support material layer and a second support material layer stacked on one side of the substrate; patterning the first support material layer and the second support material layer to form a first support portion, a second support portion, and a via through the first support portion and the second support portion; fabricating a first blocking portion filling the via on the side of the second support portion facing away from the substrate, the first blocking portion covering a portion of the surface of the second support portion facing away from the substrate; and removing a portion of the second support portion so that the first blocking portion covers the entire surface of the second support portion facing away from the substrate. The material of the first blocking portion includes an insulating material.

[0014] Further, after the step of fabricating the light-emitting functional layer on one side of the substrate and the first isolation structure, the method further includes: fabricating a first electrode layer on the side of the light-emitting functional layer facing away from the substrate. Preferably, before the step of fabricating the first isolation structure on the substrate located in the transition region, the method further includes: fabricating a second electrode layer on one side of the substrate and patterning the second electrode layer to form a plurality of second electrodes; fabricating a pixel defining layer on one side of the substrate and the second electrode layer, and patterning a plurality of pixel openings located in the display area and corresponding to the second electrodes in the pixel defining layer.

[0015] Further, the method for manufacturing the display panel further includes simultaneously manufacturing a second isolation structure while manufacturing a first isolation structure on the substrate located in the transition region. Preferably, after the step of manufacturing a first support material layer and a second support material layer stacked on one side of the substrate, the method further includes: manufacturing a second barrier material layer on the side of the second support material layer facing away from the substrate. Preferably, before the step of manufacturing a first barrier portion filling the via on the side of the second support portion facing away from the substrate, the method further includes: patterning the second barrier material layer to form a second barrier portion, and removing the second barrier material layer located on the second support portion. Preferably, while patterning the first support material layer and the second support material layer to form the first support portion and the second support portion, a third support portion disposed in the same layer as the first support portion and a fourth support portion disposed in the same layer as the second support portion are formed. Preferably, while removing a portion of the second support portion so that the first barrier portion covers the entire surface of the second support portion facing away from the substrate, a portion of the fourth support portion is also removed so that the second barrier portion covers the entire surface of the fourth support portion facing away from the substrate.

[0016] The present invention also provides a display device, the display device comprising the display panel as described above; or, the display device comprising a display panel prepared by the display panel preparation method described above.

[0017] The advantages of this invention are: A display panel and display device of this invention, by providing a first blocking part with insulating material, interrupts the electrical connection between the second support part in the first isolation structure and the first support part and the first electrode layer in the display panel. This effectively isolates the electric field between the first isolation structure and the first electrode layer, preventing chemical substances in the polarizer from being attracted by the electric field and penetrating into the display panel to corrode the encapsulation layer in the display panel. This prevents the encapsulation layer from creating water and oxygen intrusion channels due to encapsulation failure, thereby preventing water and oxygen from penetrating through the failed encapsulation layer into the display panel and corroding the display devices, extending the service life of the display panel. It also prevents abnormal display phenomena such as black spots from appearing when the display panel is displaying images, and improves the display effect of the display product. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the partitioning of the display panel in an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the layered structure of the display panel in the display area in an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the layered structure of the display panel in the transition zone in an embodiment of the present invention;

[0022] Figure 4 This is an enlarged schematic diagram of the first isolation structure in an embodiment of the present invention;

[0023] Figure 5 This is a schematic flowchart of the display panel manufacturing method in an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the layered structure of the display panel after the first support material layer and the second support material layer are patterned in an embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the layered structure of the display panel after removing the second blocking material layer located on the second support in an embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the layered structure of the display panel after the first blocking part is formed in an embodiment of the present invention;

[0027] Figure 9 This is a schematic diagram of the layered structure of the display panel after removing part of the first support portion and the third support portion in an embodiment of the present invention.

[0028] The components in the diagram are shown below:

[0029] Display panel 1; Display area AA;

[0030] Opening region NA1; Transition region NA2;

[0031] Substrate 10; Pixel confinement layer 20;

[0032] Pixel aperture 21; Emissive functional layer 30;

[0033] Light-emitting unit 31; First electrode layer 40;

[0034] Second electrode layer 50; Second electrode 51;

[0035] Encapsulation layer 60; First isolation structure 70;

[0036] First support part 71; Second support part 72;

[0037] First blocking part 73; Through hole 74;

[0038] Second isolation unit 80; Third support unit 81;

[0039] Fourth support part 82; Second blocking part 83;

[0040] Second barrier material layer 83'. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0042] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0043] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0044] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] The following disclosure provides many different implementations or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or reference letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials. Currently, mainstream mobile phone screens pursue an ultra-high screen-to-body ratio approaching 100%, i.e., full-screen phones. However, a front-facing camera is indispensable for mobile phones. Since under-display camera technology has not yet achieved significant breakthroughs, it has not been formally promoted and used. Therefore, the combination of punch-hole screen technology and AMOLED (Active-Matrix Organic Light-Emitting Diode) display technology, which can produce ultra-thin and flexible screens, is currently the mainstream technology solution for mobile phone screens.

[0046] In related display technologies, punch-hole screen technology involves creating a camera channel in the screen's camera location for front-facing camera capture. This area is not used for display, so the punch-hole diameter must be minimized to reduce its impact on the screen's display effect. The mainstream solution for achieving this technology is to use a special etching process on the metal film layer to form a special isolation structure to effectively isolate the vapor-deposited material, preventing water and oxygen intrusion paths around the camera channel and thus preventing reliability corrosion. However, in the actual application of metal isolation technology, the metal film layer in the isolation structure overlaps with the disconnected cathode material, failing to effectively isolate the electric field. Under the influence of the electric field, K+ (potassium ions) in the polarizer are attracted and penetrate into the display panel. Once K+ enters the display panel, it corrodes the inorganic encapsulation film layer, causing it to expand. This leads to cracks or film separation within the encapsulation film layer, creating water and oxygen intrusion channels. Water and oxygen then invade the interior of the display panel through these channels, causing corrosion and failure of critical components such as the light-emitting devices. In actual products, this failure manifests as large black spots on the screen, which not only severely damages the display effect and causes obvious flaws in the image, but also greatly reduces the user experience and affects the product's market reputation and user satisfaction.

[0047] Based on the problems found in the aforementioned related display technologies, this embodiment of the invention provides a display panel 1. Figure 1 The image shows the positional relationship between the display area AA, the transition area NA2, and the aperture area NA1 in the display panel 1. Figure 2 The image shows the layered structure of the display panel 1 within the display area AA. Figure 3 The image shows the layered structure of the display panel 1 in the transition area NA2. Figure 4 The image shows the layered structure of the first isolation structure 70 in the display panel 1.

[0048] like Figures 1-4As shown, the display panel 1 includes a substrate 10, a light-emitting functional layer 30, and a first isolation structure 70. The substrate 10 has a light-transmitting hole (not shown), which is used to house a camera or provide a light-collecting channel for the camera. The light-emitting functional layer 30 is disposed on one side of the substrate 10 and can emit light under the drive of the substrate 10 to display an image. The first isolation structure 70 is also disposed on one side of the substrate 10 and surrounds the light-transmitting hole. In this embodiment of the invention, the first isolation structure 70 includes a first support portion 71, a second support portion 72, and a first blocking portion 73 stacked sequentially. The material of the first blocking portion 73 includes an insulating material, thereby blocking the electric field between the first isolation structure 70 and other conductive film layers through the insulating first blocking portion 73. This prevents charged ions in other film layers from entering the interior of the display panel 1 under the attraction of the electric field, thereby preventing black spots from appearing on the display panel 1 during use and extending the service life of the display panel 1.

[0049] Specifically, the display panel 1 has a display area AA, an opening area NA1, and a transition area NA2. The display area AA surrounds at least a portion of the opening area NA1, and the transition area NA2 is disposed between and connects the display area AA and the opening area NA1. The display area AA is used to display the image, the opening area NA1 is used to mount a camera, and the transition area NA2 is used to separate the opening area NA1 from the display. It should be noted that... Figure 1 The opening area NA1 shown is circular. This figure is only a schematic diagram. In reality, the shape of the opening area NA1 can be rectangular, elliptical, teardrop-shaped, etc. The shape of the opening area NA1 is not specifically limited here.

[0050] In the aperture area NA1, the light-transmitting hole penetrates the substrate 10 in the stacking direction Y of the display panel 1, causing the substrate 10 to extend from the display area AA to the transition area NA2. The substrate 10 is an array substrate, in which multiple arrayed thin film transistors (TFTs) and multiple signal lines are disposed in the display area AA. The multiple TFTs are electrically connected through corresponding signal lines to form pixel circuits. The pixel circuits are then electrically connected to the driving chip through signal lines. The driving chip transmits display signals to the corresponding pixel circuits through signal lines. The pixel circuits turn on the corresponding TFTs according to the received display signals, thereby conducting the corresponding light-emitting devices and lighting up the light-emitting devices at the corresponding positions, thus forming an image. At the same time, the driving chip can also realize the change of the display image by sending different display signals.

[0051] The display panel 1 also includes a pixel defining layer 20, a first electrode layer 40, and a second electrode layer 50.

[0052] A pixel defining layer 20 is disposed on one side of the substrate 10. This pixel defining layer 20 encloses and forms a plurality of pixel openings 21 in the display area AA. The pixel defining layer 20 defines the size of each light-emitting device by opening pixel openings 21 of corresponding sizes. A second electrode layer 50 is disposed between the substrate 10 and the pixel defining layer 20. The second electrode layer 50 has a plurality of second electrodes 51. Part of the surface of the second electrode 51 is exposed in the corresponding pixel opening 21, and the second electrode 51 serves as an anode to electrically connect the corresponding light-emitting device to the corresponding pixel circuit in the substrate 10.

[0053] The light-emitting functional layer 30 is disposed on the side of the second electrode layer 50 away from the substrate 10, and extends from the display area AA to the transition area NA2, covering the surface of the first isolation structure 70 away from the substrate 10. Specifically, the light-emitting functional layer 30 includes a plurality of light-emitting units 31. In the display area AA, each light-emitting unit 31 is located in a corresponding pixel opening 21 and covers the exposed surface of the second electrode 51 in the corresponding pixel opening 21. The light-emitting device is electrically connected to the corresponding pixel circuit in the substrate 10 through the corresponding second electrode 51. The pixel circuit drives the corresponding light-emitting device to light up or turn off according to the corresponding display signal. The light emitted by the light-emitting device is emitted from one side of the display panel 1. The first electrode layer 40 is disposed on the side of the light-emitting functional layer 30 away from the substrate 10, and extends from the display area AA to the transition area NA2, covering the surface of the light-emitting functional layer 30 located on the first isolation structure 70. The first electrode layer 40 serves as a cathode to transmit current to the light-emitting device. The light-emitting unit 31, together with the first electrode layer 40 and the corresponding second electrode 51, forms a light-emitting device. In order to enable different light-emitting devices to emit light of different colors, the materials of the light-emitting functional layers 30 located in different pixel openings 21 are at least partially different, thereby realizing the display of color images.

[0054] Furthermore, the display panel 1 also includes an encapsulation layer 60, which is disposed on the side of the second electrode layer 50 facing away from the substrate 10. The encapsulation layer 60 can be fabricated using a thin film encapsulation (TFE) process, comprising stacked inorganic and organic film layers. The encapsulation layer 60 is used to encapsulate and protect the light-emitting devices and other electronic components in the display panel 1, preventing water and oxygen intrusion and corrosion of the display devices.

[0055] The first isolation structure 70 is located in the transition region NA2. A first support portion 71 of the first isolation portion is disposed on one side of the substrate 10, a second support portion 72 of the first isolation portion is disposed on the side of the first support portion 71 facing away from the substrate 10, and a first blocking portion 73 of the first isolation portion is disposed on the side of the second support portion 72 facing away from the substrate 10, covering the entire surface of the second support portion 72 facing away from the substrate 10. A through-hole 74 is formed in the first support portion 71 and the second support portion 72, penetrating the first support portion 71 and the second support portion 72 in the stacking direction Y of the display panel 1, and the first blocking portion 73 fills the through-hole 74. The orthographic projection of the second support portion 72 onto the substrate 10 is within the orthographic projection range of the first blocking portion 73 onto the substrate 10, and in the first direction X perpendicular to the stacking direction Y of the display panel 1, both ends of the first blocking portion 73 protrude from the second support portion 72, meaning the width of the first blocking portion 73 in the first direction X is greater than the width of the second support portion 72 in the first direction X. Optionally, the distance D between the orthographic projection boundary of the first blocking portion 73 on the substrate 10 and the orthographic projection boundary of the surface of the second support portion 72 away from the first support portion 71 on the substrate 10 is 3000-4000 angstroms, that is, the width of the first blocking portion 73 in the first direction X is 6000-4000 angstroms larger than the width of the second support portion 72 in the first direction X. For example, the distance D between the orthographic projection boundary of the first blocking portion 73 on the substrate 10 and the orthographic projection boundary of the surface of the second support portion 72 away from the first support portion 71 on the substrate 10 can be one of 3200 angstroms, 3500 angstroms or 3800 angstroms, and the width of the first blocking portion 73 in the first direction X is one of 6400 angstroms, 7000 angstroms or 7600 angstroms larger than the width of the second support portion 72 in the first direction X. By setting the first blocking part 73 to protrude from the second support part 72 at both ends in the first direction X, the first isolation structure 70 is made to form an eaves-shaped structure. The first isolation structure 70 with the eaves-shaped structure can effectively block the vapor deposition material of the light-emitting functional layer 30 and the first electrode layer 40, so that water and oxygen intrusion paths cannot be formed around the camera channel, and water and oxygen are prevented from entering the display area AA and causing the light-emitting functional layer 30 to fail.

[0056] Further, the first isolation structure 70 has an I-shaped cross-section in the stacking direction Y of the display panel 1. The width of the second support portion 72 near the first support portion 71 is greater than the width of the second support portion 72 near the first blocking portion 73. Optionally, the cross-sectional shape of the second support portion 72 parallel to the stacking direction Y of the display panel 1 includes a trapezoid. The cross-sectional shape of the first blocking portion 73 parallel to the stacking direction Y of the display panel 1 includes a slope. The orthographic projection of the first blocking portion 73 on the substrate 10 is within the orthographic projection range of the first support portion 71 on the substrate 10, and the thickness of the first support portion 71 is less than the thickness of the second support portion 72 and the thickness of the first blocking portion 73. The thickness of the first blocking portion 73 is less than the thickness of the second support portion 72; optionally, the thickness T of the second support portion 72 is 4500-5500 angstroms; for example, the thickness of the second support portion 72 can be one of 4700 angstroms, 5000 angstroms, or 5300 angstroms.

[0057] The first support portion 71 and the second support portion 72 are made of metal, and the first blocking portion 73 is made of organic material. Using metal for the first support portion 71 and the second support portion 72 increases the rigidity of the first isolation structure 70, thereby enhancing the isolation effect of the first isolation structure 70 on the light-emitting functional layer 30 and the first electrode layer 40. Optionally, the first support portion 71 is made of at least one of titanium, gold, molybdenum, and platinum; the second support portion 72 is made of at least one of aluminum, copper, or silver; and the first blocking portion 73 is made of a flat organic adhesive. This thicker flat organic adhesive results in a roof-shaped structure with better stability than metal, making it less prone to collapse or warping. By setting the first blocking part 73 at the top of the first isolation structure 70 as an insulating organic material, the electrical connection between the conductive second support part 72 and the first support part 71 in the first isolation structure 70 and the first electrode layer 40 (cathode) in the display panel 1 is blocked, effectively achieving the isolation of the electric field. This prevents K+ (potassium ions) in the polarizer from being attracted by the electric field and penetrating into the display panel 1, and prevents the inorganic film layer of the encapsulation layer 60 in the display panel 1 from being corroded by K+ (potassium ions) and expanding, thereby causing the encapsulation layer 60 to fail. This also prevents water and oxygen from penetrating through the failed encapsulation layer 60 into the interior of the display panel 1 and corroding the display device, extending the service life of the display panel 1. At the same time, it also prevents abnormal display phenomena such as black spots from appearing when the display panel 1 displays images, and improves the display effect of the display product.

[0058] The display panel 1 also includes a plurality of second isolation structures. These second isolation structures are disposed on one side of the substrate 10 and located in the transition region NA2. The plurality of second isolation structures are arranged sequentially at intervals on the side of the first isolation structure 70 near the opening region NA1. Each second isolation structure includes a third support portion 81, a fourth support portion 82, and a second blocking portion 83. The third support portion 81 is disposed on one side of the substrate 10, the fourth support portion 82 is disposed on the side of the third support portion 81 facing away from the substrate 10, and the second blocking portion 83 is disposed on the side of the fourth support portion 82 facing away from the substrate 10. The orthographic projection of the fourth support portion 82 onto the substrate 10 is within the orthographic projection range of the second blocking portion 83 onto the substrate 10. Furthermore, in the first direction X, both ends of the second blocking portion 83 protrude beyond the fourth support portion 82, meaning the width of the second blocking portion 83 in the first direction X is greater than the width of the fourth support portion 82 in the first direction X. By setting the second blocking part 83 to protrude from the fourth support part 82 at both ends in the first direction X, the second isolation structure is made to form an eaves-shaped structure. The eaves-shaped second isolation structure can effectively block the vapor deposition material of the light-emitting functional layer 30 and the first electrode layer 40, so that water and oxygen intrusion paths cannot be formed around the camera channel, and water and oxygen are prevented from entering the display area AA and causing the light-emitting functional layer 30 to fail.

[0059] Furthermore, the second isolation structure has an I-shaped cross-section in the stacking direction Y of the display panel 1. The width of the fourth support portion 82 near the third support portion 81 is greater than the width of the fourth support portion 82 near the second blocking portion 83. Optionally, the cross-sectional shape of the fourth support portion 82 parallel to the stacking direction Y of the display panel 1 includes a trapezoid. The cross-sectional shape of the second blocking portion 83 parallel to the stacking direction Y of the display panel 1 includes a slope. The orthographic projection of the second blocking portion 83 on the substrate 10 is within the orthographic projection range of the third support portion 81 on the substrate 10, and the thickness of the third support portion 81 is less than the thickness of the fourth support portion 82 and the thickness of the second blocking portion 83. The thickness of the second blocking portion 83 is less than the thickness of the second support portion 72.

[0060] The materials of the third support portion 81, the fourth support portion 82, and the second blocking portion 83 all include metal. Using metal for the support portions increases the hardness of the second isolation structure, thereby enhancing its isolation effect on the light-emitting functional layer 30 and the first electrode layer 40. The etching resistance of the materials of the third support portion 81 and the second blocking portion 83 is stronger than that of the material of the fourth support portion 82. Optionally, the material of the third support portion 81 can be the same as that of the second blocking portion 83. This configuration ensures that the etching amount of the third support portion 81 is less than that of the second blocking portion 83 during subsequent etching, thus reducing the width of the fourth support portion 82 in the first direction X, further preventing the light-emitting functional layer 30 and the first electrode layer 40 from being unable to be blocked by the isolation structure. Furthermore, the third support portion 81 is disposed in the same layer as the first support portion 71 in the first isolation structure 70, and the fourth support portion 82 is disposed in the same layer as the second support portion 72 in the first isolation structure 70. That is, the third support portion 81 and the first support portion 71 can be made of the same material and manufactured simultaneously in the same process, and the fourth support portion 82 and the second support portion 72 can be made of the same material and manufactured simultaneously in the same process. Optionally, the material of the third support portion 81 includes at least one of titanium, gold, molybdenum and platinum, the material of the fourth support portion 82 includes at least one of aluminum, copper or silver, and the material of the second blocking portion 83 includes at least one of titanium, gold, molybdenum and platinum.

[0061] This invention also provides a method for manufacturing a display panel 1, used to manufacture the display panel 1 as described above. The specific process of this method for manufacturing the display panel 1 is as follows: Figure 5 As shown, it includes steps S10-S50.

[0062] Step S10) Provide a substrate 10, form a light-transmitting hole on the substrate 10, and obtain an opening area NA1 in the region where the light-transmitting hole is located, a transition area NA2 connected to the opening area NA1, and a display area AA connected to the transition area NA2:

[0063] A substrate 10 is provided, a second electrode layer 50 is formed on one side of the substrate 10, and the second electrode layer 50 is patterned to form a plurality of second electrodes 51. A pixel defining layer 20 is formed on one side of the substrate 10 and the second electrode layer 50, and a plurality of pixel openings 21 located in the display area AA and corresponding to the second electrodes 51 are patterned in the pixel defining layer 20.

[0064] An opening area NA1, a transition area NA2 connected to the opening area NA1, and a display area AA connected to the transition area NA2 are divided on the substrate 10, and a light-transmitting hole is opened in the opening area NA1 by laser cutting process.

[0065] Step S20) Simultaneously fabricate the first isolation structure 70 and the second isolation structure on the substrate 10 located in the transition region NA2:

[0066] In the transition region NA2, a first support material layer, a second support material layer, and a second barrier material layer are sequentially deposited on one side of the substrate 10 using a vapor deposition process. The materials of the first support material layer, the second support material layer, and the second barrier material layer all include metals. The first and second support material layers are patterned to form a shape as shown in the image. Figure 6 The diagram shows a first support portion 71 and a third support portion 81, as well as a second support portion 72 and a fourth support portion 82, arranged on the same layer. Through-holes 74 are formed in the first and second support portions 71 and 72. A second barrier material is patterned simultaneously with the first and second support material layers to form a second barrier portion 83 located on the side of the fourth support portion 82 away from the substrate 10. Figure 7 As shown, the second blocking material 83' located on the second support portion 72 is removed by an etching process, causing the second support portion 72 to be exposed away from the surface of the substrate 10.

[0067] An organic material layer is prepared on the side of the second support portion 72 facing away from the substrate 10, filling the via 74 and covering the surface of the second support portion 72 facing away from the substrate 10, and the organic material layer is patterned to form a shape as shown in the image. Figure 8 The first blocking portion 73 shown covers a portion of the second support material layer away from the surface of the substrate 10. Optionally, the distance between the orthographic projection boundary of the first blocking portion 73 on the substrate 10 and the orthographic projection boundary of the via 74 on the substrate 10 is greater than or equal to 1.5 micrometers.

[0068] like Figure 9 As shown, a portion of the first support portion 71 is removed so that the first blocking portion 73 covers the entire surface of the second support portion 72 away from the substrate 10, and causes the two ends of the first blocking portion 73 to protrude from the second support portion 72 in the first direction X. Simultaneously with the removal of the portion of the first support portion 71, a portion of the fourth support portion 82 is also removed so that the second blocking portion 83 covers the entire surface of the fourth support portion 82 away from the substrate 10, and causes the two ends of the second blocking portion 83 to protrude from the fourth support portion 82 in the first direction X.

[0069] Step S30) A light-emitting functional layer 30 is prepared on one side of the substrate 10 and the first isolation structure 70:

[0070] A light-emitting functional layer 30 is prepared on the side of the pixel limiting layer 20 away from the substrate 10; in the display area AA, the light-emitting functional layer 30 is located in the corresponding pixel opening 21 and covers the exposed surface of the second electrode 51 in the corresponding pixel opening 21; in the transition area NA2, the light-emitting functional layer 30 covers the surface of the first blocking portion 73 in the first isolation structure 70 away from the substrate 10 and the surface of the second blocking portion 83 in the second isolation structure away from the substrate 10, and the light-emitting functional layer 30 located in the transition area NA2 is disconnected through the first isolation structure 70 and the second isolation mechanism 80 of the roof-shaped structure and the gap between the two adjacent isolation structures.

[0071] Step S40) A first electrode layer 40 is fabricated on the side of the light-emitting functional layer 30 facing away from the substrate 10:

[0072] A conductive material layer is formed on the side of the light-emitting functional layer 30 away from the substrate 10 by a vapor deposition process to form the first electrode layer 40. In the display area AA, the first electrode layer 40 covers the surface of the light-emitting functional layer 30 away from the substrate 10; in the transition area NA2, the first electrode layer 40 covers the surface of the light-emitting functional layer 30 away from the substrate 10 located on the first and second blocking portions 83, and the second electrode layer 50 located in the transition area NA2 is disconnected by the first and second isolation mechanisms of the roof-shaped structure and the gap between the two adjacent isolation structures.

[0073] Step S50) Prepare an encapsulation layer 60 on the side of the first electrode layer 40 facing away from the substrate 10:

[0074] In the display area AA, an inorganic film layer and an organic film layer are sequentially formed on the surface of the first electrode layer 40 away from the substrate 10 by a thin film encapsulation process to form an encapsulation layer 60.

[0075] This invention also provides a display device, which can be an OLED (Organic Light-Emitting Diode) display device, including the display panel 1 as described above and a polarizer disposed on the light-emitting surface of the display panel 1. The display panel 1 is used to display images on the display device. The polarizer is used to modulate the light emitted by the display panel 1 into polarized light, so that the light has a specific polarization direction during propagation, effectively improving the contrast and color saturation of the displayed image. At the same time, the polarizer is also used to prevent ambient light from entering the interior of the display panel 1, thereby avoiding interference from ambient light with the display light, ensuring that the display light can be emitted stably, thereby improving the display effect of the display module and bringing users an excellent visual experience. This display device can be any display device with display function, such as mobile phones, laptops, tablets, etc.

[0076] In this embodiment of the invention, an innovative solution is proposed to address the performance degradation problem caused by electric field in the edge area of ​​the opening region of the display panel. In this embodiment, by carefully designing a first blocking portion with insulating material, the structure can precisely break the electrical connection between the second metal support portion in the first isolation structure and the first support portion and the first electrode layer in the display panel, effectively isolating the electric field between the first isolation structure and the first electrode layer, fundamentally eliminating potential electric field interference hazards.

[0077] In the operation of traditional display panels, the presence of an electric field can cause chemical substances in the polarizer to be attracted by the electric field and thus penetrate into the interior of the display panel. Once these chemicals enter, they can severely corrode the encapsulation layer in the display panel, forming channels for water and oxygen intrusion. In this embodiment of the invention, the intervention of the blocking part successfully avoids this situation. Because the encapsulation layer is effectively protected, water and oxygen intrusion channels will not appear due to encapsulation failure, preventing water and oxygen from penetrating the failed encapsulation layer and entering the interior of the display panel, corroding the display device, and greatly extending the service life of the display panel.

[0078] Furthermore, the embodiments of the present invention can effectively prevent abnormal display phenomena such as black spots from appearing on the display panel when displaying images. Because electric field interference and encapsulation layer corrosion problems are eliminated, the display panel can work more stably, thereby significantly improving the display effect of the display product and bringing users a better visual experience.

[0079] This disclosure is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

[0080] It should be noted that the above description describes some embodiments of this disclosure. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in a different order than that shown in the above embodiments and still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0081] This disclosure is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A display panel, characterized in that, It includes a display area, an opening area, and a transition area disposed between the display area and the opening area: The display panel also includes: A substrate, wherein a light-transmitting hole is formed on the substrate in the opening area; A light-emitting functional layer is disposed on one side of the substrate, and at least a portion of the light-emitting functional layer is located in the display area; A first isolation structure is disposed on one side of the substrate and located in the transition region; The first isolation structure includes: A first support portion is disposed on one side of the substrate; The second support portion is disposed on the side of the first support portion away from the substrate; A first blocking portion is disposed on the side of the second support portion away from the substrate, and the first blocking portion covers the surface of the second support portion away from the substrate; The first support portion and the second support portion have through holes, the through holes penetrate the first support portion and the second support portion, and the first blocking portion fills the through holes; The material of the first blocking part includes insulating material.

2. The display panel as described in claim 1, characterized in that, The orthographic projection of the second support portion on the substrate is located within the orthographic projection range of the first blocking portion on the substrate; Preferably, the orthographic projection of the first blocking portion on the substrate is located within the orthographic projection range of the first supporting portion on the substrate; Preferably, the distance between the orthographic projection boundary of the first blocking portion on the substrate and the orthographic projection boundary of the surface of the second supporting portion away from the first supporting portion on the substrate is 3000-4000 angstroms.

3. The display panel as described in claim 1, characterized in that, The thickness of the first support portion is less than the thickness of the second support portion; The thickness of the first support portion is less than the thickness of the first blocking portion; Preferably, the thickness of the first blocking portion is less than the thickness of the second supporting portion; Preferably, the thickness of the second support portion is 4500-5500 angstroms; Preferably, the cross-sectional shape of the second support portion parallel to the stacking direction of the display panel includes a trapezoid; Preferably, the cross-sectional shape of the first blocking portion parallel to the stacking direction of the display panel includes a slope.

4. The display panel as described in claim 1, characterized in that, The materials of the first support and the second support include metal; Preferably, the material of the first support portion includes at least one selected from titanium, gold, molybdenum, and platinum; Preferably, the material of the second support portion includes at least one of aluminum, copper, or silver; Preferably, the material of the first blocking part includes an organic material.

5. The display panel as described in claim 1, characterized in that, The light-emitting functional layer extends from the display area to the transition area and covers the surface of the first isolation structure facing away from the substrate; Preferably, the display panel further includes a first electrode layer, which is disposed on the side of the light-emitting functional layer opposite to the substrate and extends from the display area to the transition area; Preferably, the display panel further includes: A pixel defining layer is disposed on one side of the substrate and surrounds and forms a plurality of pixel openings in the display area; A second electrode layer is located between the pixel defining layer and the substrate. The second electrode layer includes a plurality of first electrodes, and a portion of the surface of the second electrode is exposed in the corresponding pixel opening. In the display area, the light-emitting functional layer is located in the corresponding pixel opening and covers the exposed surface of the corresponding second electrode.

6. The display panel as described in claim 1, characterized in that, Also includes: The second isolation structure is disposed on one side of the substrate and located in the transition region; The second isolation structure is located on the side of the first isolation structure closer to the opening area; Preferably, the second isolation structure includes: The third support portion is disposed on one side of the substrate; The fourth support portion is disposed on the side of the third support portion away from the substrate; The second blocking part is provided on the side of the fourth support part away from the substrate; Preferably, the materials of the third support portion, the fourth support portion, and the second blocking portion all include metal; Preferably, the material of the third support portion is at least partially the same as the material of the second blocking portion; Preferably, the third support portion is disposed on the same layer as the first support portion, and the fourth support portion is disposed on the same layer as the second support portion.

7. A method for manufacturing a display panel, characterized in that, include: A substrate is provided, and a light-transmitting hole is formed on the substrate to obtain an opening area in the region where the light-transmitting hole is located, a transition area connected to the opening area, and a display area connected to the transition area. A first isolation structure is fabricated on the substrate located in the transition region; A light-emitting functional layer is prepared on one side of the substrate and the first isolation structure; The step of fabricating the first isolation structure on the substrate located in the transition region includes: A first support material layer and a second support material layer are stacked on one side of the substrate. The first support material layer and the second support material layer are patterned to form a first support portion, a second support portion, and a through hole penetrating the first support portion and the second support portion; A first blocking portion is prepared on the side of the second support portion away from the substrate to fill the via, and the first blocking portion covers a portion of the surface of the second support portion away from the substrate; Remove a portion of the second support portion so that the first blocking portion covers the entire surface of the second support portion away from the substrate; The material of the first blocking part includes insulating material.

8. The method for manufacturing a display panel as described in claim 7, characterized in that, The step of fabricating a light-emitting functional layer on one side of the substrate and the first isolation structure further includes: A first electrode layer is prepared on the side of the light-emitting functional layer opposite to the substrate; Preferably, the step of fabricating the first isolation structure on the substrate located in the transition region further includes: A second electrode layer is prepared on one side of the substrate, and the second electrode layer is patterned to form a plurality of second electrodes; A pixel defining layer is prepared on one side of the substrate and the second electrode layer, and a plurality of pixel openings located in the display area and corresponding to the second electrode are patterned in the pixel defining layer.

9. The method for manufacturing a display panel as described in claim 7, characterized in that, Also includes: The second isolation structure is fabricated simultaneously on the substrate located in the transition region; Preferably, after the step of preparing the first support material layer and the second support material layer stacked on one side of the substrate, the method further includes: preparing a second barrier material layer on the side of the second support material layer opposite to the substrate. Preferably, before the step of preparing the first blocking portion that fills the via on the side of the second support portion away from the substrate, the method further includes: patterning the second blocking material layer to form the second blocking portion, and removing the second blocking material layer located on the second support portion; Preferably, while patterning the first support material layer and the second support material layer to form the first support portion and the second support portion, a third support portion and a fourth support portion are formed on the same layer as the first support portion and on the same layer as the second support portion. Preferably, a portion of the second support portion is removed so that the first blocking portion covers the entire surface of the second support portion away from the substrate, while a portion of the fourth support portion is also removed so that the second blocking portion covers the entire surface of the fourth support portion away from the substrate.

10. A display device, characterized in that, Includes the display panel as described in any one of claims 1-6; or, This includes display panels manufactured using the display panel manufacturing method as described in any one of claims 7-9.

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