Display panel, manufacturing method thereof and display device

Abstract

The application discloses a display panel and a manufacturing method thereof and a display device, and relates to the technical field of display, the display panel comprises a first display area with high transmittance, in the first display area, a second electrode layer comprises a plurality of second electrode blocks and a plurality of connecting parts, the second electrode blocks and the first electrode blocks are overlapped in the direction perpendicular to the plane where the substrate base plate is located, adjacent second electrode blocks are connected through the connecting parts, the first display area further comprises a functional layer, and the functional layer is located on the side of the second electrode layer close to the substrate base plate; a protrusion is arranged on the side of the functional layer away from the substrate base plate, and the protrusion and the connecting parts are at least partially overlapped in the direction perpendicular to the plane where the substrate base plate is located. The application removes part of the first electrode layer in the first display area, improves the transmittance of the first display area, sets the protrusion of the functional layer, does not need to set a shielding layer when the first electrode layer is removed by laser, saves one mask plate, reduces the production cost, and simplifies the manufacturing process.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more specifically, to a display panel, a method for manufacturing the same, and a display device. Background Technology

[0002] With the development of display technology, display panels are achieving increasingly higher screen-to-body ratios. Full-screen displays, with their narrow bezels or even borderless designs, have garnered widespread attention. Currently, display devices such as smartphones and tablets often require reserved space on the front for commonly used electronic photosensitive devices such as front-facing cameras, infrared sensors, and fingerprint recognition devices. For example, these photosensitive devices are often located at the top front of the display device, creating a semi-transparent area that reduces the device's screen-to-body ratio.

[0003] By employing under-display optics, the optical components are placed beneath the semi-transparent area, saving space in the non-display area and increasing the screen-to-body ratio to achieve a full-screen display. Taking a camera as an example, when displaying a normal image, the semi-transparent area displays the image correctly; when the camera is activated, light passes through the display panel and is captured by the camera, enabling photo or video recording. In related technologies, display panels, especially organic self-emissive display panels, often have some layers with low transmittance, resulting in low overall transmittance and affecting image quality.

[0004] Therefore, there is an urgent need to provide a display panel and its manufacturing method, as well as a display device, that can both improve the transmittance of the semi-transparent area and reduce the process and cost. Summary of the Invention

[0005] In view of this, the present invention provides a display panel and a method for manufacturing the same, as well as a display device, to improve the transmittance of the semi-transparent area while reducing the complexity of the process and lowering costs.

[0006] On one hand, the present invention provides a display panel, comprising: a first display area and a second display area at least partially surrounding the first display area, wherein the light transmittance of the first display area is greater than the light transmittance of the second display area;

[0007] The display panel includes a substrate and light-emitting devices, with the light-emitting devices disposed on one side of the substrate;

[0008] In a direction perpendicular to the plane of the substrate, the light-emitting device includes a first electrode layer, a light-emitting layer, and a second electrode layer. The second electrode layer is located on the side of the light-emitting layer away from the substrate, and the first electrode layer includes a plurality of first electrode blocks.

[0009] In the first display area, the second electrode layer includes a plurality of second electrode blocks and a plurality of connecting portions. In a direction perpendicular to the plane of the substrate, the second electrode blocks overlap with the first electrode blocks, and adjacent second electrode blocks are connected by connecting portions.

[0010] The first display area also includes a functional layer located on the side of the second electrode layer closer to the substrate. A protrusion is provided on the side of the functional layer away from the substrate, and the protrusion at least partially overlaps with the connecting portion in a direction perpendicular to the plane of the substrate.

[0011] On the other hand, the present invention also discloses a method for manufacturing the above-mentioned display panel, comprising:

[0012] Provide substrates;

[0013] Forming a light-emitting device includes forming a patterned first electrode layer on one side of a substrate, the first electrode layer including a plurality of first electrode blocks, and forming a light-emitting layer and a second electrode layer on the side of the first electrode layer away from the substrate.

[0014] Corresponding to the first display area, before forming the second electrode layer, a functional layer is also formed, the functional layer including protrusions protruding toward the substrate side;

[0015] Corresponding to the first display area, a second electrode layer is irradiated by a laser on the side of the substrate away from the array layer, forming a second electrode block at the position corresponding to the first electrode block, and a connecting part is formed at the position corresponding to the protrusion, and the second electrode block and the connecting part are electrically connected.

[0016] On the other hand, the present invention also provides a display device including the above-described display panel.

[0017] Compared with the prior art, the display panel, its manufacturing method, and the display device provided by the present invention achieve at least the following beneficial effects:

[0018] The display panel of the present invention removes part of the second electrode layer in the first display area, retaining only the second electrode block and the connecting part. When manufacturing the display panel, after the array layer and the light-emitting device are manufactured, the first display area is laser-etched on the side of the substrate away from the second electrode layer. The first electrode block will block the laser at the position corresponding to the first electrode block, so the second electrode block of the second electrode layer is retained. That is, the first electrode block itself can serve as a shielding layer. For locations without anode shielding and not overlapping with the protrusions, when the laser irradiates the first non-display area, the second electrode layer is removed due to the lack of any obstruction, forming a hollow area. The removal of the second electrode layer in the hollow area improves the overall transmittance of the first display area, thus enhancing image quality. For the connecting portion, a protrusion is provided in this invention, extending away from the substrate. The second electrode layer is located on the side of the protrusion away from the substrate. When the laser irradiates the protrusion, because the surface area of ​​the protrusion is larger than that of the location without a protrusion, the laser energy per unit area is reduced when the same energy laser irradiates the protrusion. This reduced laser energy per unit area is insufficient to remove the second electrode layer, thus retaining it as the connecting portion. The connecting portion connects to adjacent second electrode blocks, ensuring signal transmission. This invention eliminates the need for a metal shielding layer in the array layer, reducing the complexity of the manufacturing process and eliminating the need for an additional mask to create the metal shielding layer, thereby reducing costs.

[0019] Of course, any product implementing this invention does not necessarily need to achieve all of the technical effects described above at the same time.

[0020] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0022] Figure 1 This is a schematic diagram of a planar structure of a display panel provided by the present invention;

[0023] Figure 2 yes Figure 1 A cross-sectional view along line A-A' in the middle;

[0024] Figure 3 yes Figure 1 A cross-sectional view along the B-B' direction;

[0025] Figure 4 This is a schematic diagram of a planar structure of another display panel provided by the present invention;

[0026] Figure 5 yes Figure 4 A magnified view of a portion of region N in the middle;

[0027] Figure 6 yes Figure 5 A cross-sectional view along the C-C' direction;

[0028] Figure 7 yes Figure 5 A cross-sectional view along the D-D' direction;

[0029] Figure 8 yes Figure 5 Another cross-sectional view along the C-C' direction;

[0030] Figure 9 yes Figure 5 Another cross-sectional view along the D-D' direction;

[0031] Figure 10 yes Figure 1 Another cross-sectional view along the A-A' direction;

[0032] Figure 11 yes Figure 1 A cross-sectional view of E-E';

[0033] Figure 12 yes Figure 1 A magnified view of a portion of region P in the middle;

[0034] Figure 13 yes Figure 12 A cross-sectional view along the F-F' direction;

[0035] Figure 14 yes Figure 5 A cross-sectional view along the G-G' direction;

[0036] Figure 15 This invention provides a method for manufacturing a display panel;

[0037] Figure 16 This is a process diagram of manufacturing a display panel provided by the present invention;

[0038] Figure 17 The diagram shown is a structural diagram of a display device provided in an embodiment of the present invention. Detailed Implementation

[0039] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0040] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0041] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0042] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0043] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0044] In related technologies, to improve the transmittance of the semi-transparent area, a portion of the cathode is removed using lasers. However, the manufacturing process of these display panels is complex and costly. The inventors have researched related technologies that involve setting shielding metal lines in the array layer. The cathode is located on the side of the shielding metal lines furthest from the substrate. A laser is used to irradiate the semi-transparent area from the side of the shielding metal lines furthest from the cathode. Since the laser cannot penetrate the shielding metal lines, the cathode portion shielded by the metal lines is retained. The cathode portion without shielding metal lines, after being irradiated by the laser, has its energy absorbed and vaporized, thus removing part of the cathode. This manufacturing method requires setting shielding metal lines in the array layer to retain part of the cathode. Setting shielding metal lines separately requires additional photomasks, undoubtedly increasing the complexity and cost of the manufacturing process.

[0045] In view of this, the present invention provides a display panel and a method for manufacturing the same, as well as a display device, which can improve the transmittance of the semi-transparent area while reducing the complexity of the manufacturing process and lowering costs without the need to add a shielding metal line.

[0046] Reference Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of a planar structure of a display panel provided by the present invention. Figure 2 yes Figure 1A cross-sectional view along line A-A' shows that the display panel 100 of this embodiment includes: a first display area AA1 and a second display area AA2 that at least partially surrounds the first display area AA1. The light transmittance of the first display area AA1 is greater than that of the second display area AA2. The display panel 100 includes a substrate 101 and a light-emitting device 103, the light-emitting device 103 being disposed on one side of the substrate 101. In a direction perpendicular to the plane of the substrate 101, the light-emitting device 103 includes a first electrode layer 20, a light-emitting layer 30, and a second electrode layer 40. The second electrode layer 40 is located on the side of the light-emitting layer 30 away from the substrate 101. The first display area AA1 includes a plurality of first electrode blocks 201; the second electrode layer 40 includes a plurality of second electrode blocks 401 and a plurality of connecting portions 402. In the direction perpendicular to the plane of the substrate 101, the second electrode blocks 401 overlap with the first electrode blocks 201, and adjacent second electrode blocks 401 are connected by connecting portions 402; the first display area AA1 also includes a functional layer 50, which is located on the side of the second electrode layer 40 close to the substrate 101; a protrusion 60 is provided on the side of the functional layer 50 away from the substrate 101, and in the direction perpendicular to the plane of the substrate 101, the protrusion 60 overlaps at least partially with the connecting portion 402.

[0047] It should be noted that, Figure 1 The diagram shows a display panel 100 including a first display area AA1 and a second display area AA2 that at least partially surrounds the first display area AA1, and also includes a non-display area BB surrounding the display area AA. Figure 1 The display panel 100 is illustrated using only a rectangular display panel 100 as an example. In some other embodiments of this application, the display panel 100 may also be embodied in other shapes, such as circular, elliptical or irregular structures, etc. Moreover, the size of the first display area AA1 is only for illustration and does not represent the actual size. Figure 1 Only one location of the first display area AA1 on the display panel 100 is shown. In some other embodiments of this application, the first display area AA1 may also be located in other locations on the display panel 100, and the number of first display areas AA1 may be two or more. Furthermore, Figure 1 This application only shows the case where the second display area AA2 fully surrounds the first display area AA1. In some other embodiments of this application, the second display area AA2 may also partially surround the first display area AA1. This application does not specifically limit this. Figure 1 Only a portion of the sub-pixels in the second display area AA2 and the first display area AA1 are shown, and this does not represent the actual number and arrangement of the sub-pixels contained in the second display area AA2 and the first display area AA1. Figure 1 This does not represent the actual size of the subpixel; it is for illustrative purposes only.

[0048] Optionally, the pixel density of the first display area AA1 can be less than the pixel density of the second display area AA2. In this way, the first display area AA1 can both display the image and perform light sensing, and it also possesses higher transmittance during the light sensing process, which helps improve the light-sensing performance of the first display area AA1. When displaying a frame, the brightness of a single sub-pixel in the first display area AA1 can be greater than the brightness of a single sub-pixel in the second display area AA2, thereby achieving approximately the same overall brightness between the first display area AA1 and the second display area AA2.

[0049] Figure 1 The image shows a second electrode layer 40, which can optionally be a cathode layer. It also shows a first electrode block 201 for the first display area AA1. The first electrode layer 20 is an anode layer, and the first electrode block 201 comprises multiple anode electrode blocks. Figure 1 The anode electrode block of the second display area AA2 is not shown in the diagram. Figure 1 The first electrode block 201 is only illustrated as a circle. Of course, the first electrode block 201 can also be other shapes, which are not specifically limited here.

[0050] like Figure 2 As shown, the display panel 100 includes: a substrate 101, an array layer 102 located on one side of the substrate 101, and a light-emitting device 103 located on the side of the array layer 102 away from the substrate 101. The light-emitting device 103 includes a first electrode layer 20, a light-emitting layer 30, and a second electrode layer 40 sequentially disposed along a direction away from the substrate 101.

[0051] The substrate 101 can be a flexible substrate or a non-flexible substrate. When it is a flexible substrate, it can be formed from any suitable insulating material with flexibility. For example, the flexible substrate can be formed from polymeric materials such as polyimide, polycarbonate, polyethersulfone, polyethylene terephthalate, polyethylene naphthalate, polyaryl compounds, or glass fiber reinforced plastics. The flexible substrate can be transparent, translucent, or opaque.

[0052] A driving circuit is provided in the array layer 102 to drive the light-emitting device 103 to emit light. For example, a 7T1C or 8T1C driving circuit can be provided, where T refers to a transistor TFT and C refers to a storage capacitor. The electronic components in the driving circuit are not specifically limited here. The transistor TFT includes a gate, a semiconductor active layer, a source, and a drain. Of course, the array layer 102 also includes signal lines (not shown in the figure), such as scan lines extending along the row direction X and arranged in the column direction Y, or data lines extending along the column direction Y and arranged in the row direction X, and voltage signal lines extending along the column direction Y. The source of the transistor TFT is electrically connected to the data line, and the drain of the transistor TFT is electrically connected to the light-emitting device 103. Figure 2The film structure of the middle array layer 102 is for illustrative purposes only. Figure 2 and Figure 3 The intermediate array layer 102 has a buffer layer located on the substrate 101, with the transistor TFT located on the side of the buffer layer away from the substrate 101. The buffer layer covers the entire upper surface of the substrate 101. The buffer layer may include an inorganic layer or an organic layer. For example, the buffer layer may be formed from an inorganic material such as silicon oxide, silicon nitride, silicon oxynitride, aluminum oxide, or aluminum oxide, or from an organic material such as acrylic, polyimide, or polyester. The buffer layer may include a single layer or multiple layers. The buffer layer blocks oxygen and moisture, prevents moisture or impurities from diffusing through the substrate 101, and provides a flat surface on the upper surface of the substrate 101. The transistor TFT is located on the buffer layer and includes a semiconductor active layer located on the buffer layer. The semiconductor active layer includes a source region and a drain region formed by doping with N-type or P-type impurity ions, and the region between the source region and the drain region is a channel region in which no impurities are doped. Of course, the array layer 102 also includes a first gate metal layer M0, a second gate metal layer M1, a source-drain metal layer M2, and a data line metal layer M3. Of course, there is an insulating layer between the first gate metal layer M0, the second gate metal layer M1, the source-drain metal layer M2, and the data line metal layer M3.

[0053] The light-emitting device 103 is formed on the side of the array layer 102 away from the substrate 101. To form the light-emitting device 103, the anode of the first metal layer is electrically connected (or bonded) to the source through a contact hole. The light-emitting device 103 is located within an opening in the pixel definition layer 105. Figure 2 Only two light-emitting devices 103 are shown in the first display area AA1.

[0054] The first electrode block 201 can be made of various conductive materials. For example, the first electrode block 201 can be formed as a transparent electrode depending on its application. When the first electrode block 201 is formed as a transparent electrode, it can include indium tin oxide, indium zinc oxide, zinc oxide, or indium oxide, etc.

[0055] The pixel definition layer 105 can be formed of organic materials such as polyimide, polyamide, benzocyclobutene, acrylic resin or phenolic resin.

[0056] The light-emitting layer 30 is located on the first electrode block 201. This portion of the first electrode block 201 with the light-emitting layer 30 is not covered and is exposed by the pixel definition layer 105. The light-emitting layer 30 can be formed by a vapor deposition process, and the light-emitting layer 30 is patterned to correspond to each sub-pixel and the patterned first electrode block 201. The light-emitting layer 30 can be formed from a low molecular weight organic material or a high molecular weight organic material.

[0057] The second electrode layer 40 is located on the light-emitting layer 30. Similar to the first electrode block 201, the second electrode layer 40 can be formed as a transparent electrode, and of course, the second electrode layer 40 can be formed on the entire surface. Since the transmittance of the second electrode layer 40 is only about 60%, in this invention, the portion of the second electrode layer 40 corresponding to the first display area AA1 that does not have a display function is removed, thereby improving the overall transmittance of the first display area AA1 and improving the imaging quality of the display panel 100. Optionally, the material of the second electrode layer 40 may include indium tin oxide, indium zinc oxide, zinc oxide, or indium oxide, etc.

[0058] The light-emitting layer 30 may optionally include a hole injection layer, a hole transport layer on the hole injection layer, an organic light-emitting material layer on the hole transport layer, an electron transport layer on the organic light-emitting material layer, and an electron injection layer on the electron transport layer, etc., which can be formed by vapor deposition. The light-emitting principle of the light-emitting device 103 is that the organic light-emitting material emits light through carrier injection and recombination under the drive of an electric field. Specifically, the light-emitting device 103 includes a first electrode block 201 and a second electrode layer 40. Under a certain voltage drive, electrons and holes are injected from the second electrode layer 40 and the first electrode block 201 into the electron transport layer and the hole transport layer, respectively. The electrons and holes migrate to the light-emitting layer 30 through the electron transport layer and the hole transport layer, respectively, and meet in the light-emitting layer 30 to form excitons and excite the light-emitting molecules. The latter emit visible light after radiative relaxation.

[0059] Of course, the second electrode layer 40 also includes an encapsulation layer on the side away from the substrate 101 to prevent water and oxygen from corroding the light-emitting device 103. The encapsulation layer is not shown in the figure.

[0060] like Figure 1 As shown, in the first display area AA1, the second electrode layer 40 includes multiple second electrode blocks 401 and multiple connecting portions 402. That is, part of the second electrode layer 40 in the first display area AA1 is removed, and only the second electrode blocks 401 used for display are retained. Of course, in order to ensure the transmission of the voltage signal of the second electrode layer 40 in the first display area AA1, adjacent second electrode blocks 401 are connected by connecting portions 402. The connecting portions 402 connect adjacent second electrode blocks 401. Optionally, the connecting portions 402 can be made of the same material as the second electrode blocks 401 or different materials. There is no specific limitation here. Of course, the material of the connecting portions 402 and the material of the second electrode blocks 401 can be the same. In this way, the connecting portions 402 and the second electrode blocks 401 are manufactured in the same manufacturing process, that is, the second electrode layer in the hollow area M is removed.

[0061] Reference Figure 2In a direction perpendicular to the plane of the substrate 101, the second electrode block 401 overlaps with the first electrode block 201. In this embodiment, the first display area AA1 further includes a functional layer 50, which is located on the side of the second electrode layer 40 closest to the substrate 101. Optionally, the functional layer 50 is made of the inorganic layer closest to the substrate 101 on the side of the second electrode layer 40. A protrusion 60 is provided on the side of the functional layer 50 away from the substrate 101, and the protrusion 60 at least partially overlaps with the connecting portion 402 in a direction perpendicular to the plane of the substrate 101. The shape of the protrusion 60 is not specifically limited here, but the protrusion 60 needs to extend from the position of one second electrode block 401 to the position of an adjacent second electrode block 401. The projection of the protrusion 60 on the first cross-section 70 is only illustrated by an arc shape, and it can also be other shapes, which are not specifically limited here.

[0062] It should be noted that, in this invention, a portion of the second electrode layer 40 in the first display area AA1 is removed by laser while retaining the second electrode block 401 and the connecting portion 402. When fabricating the display panel 100, after fabricating the array layer 102 and the light-emitting device 103, the first display area AA1 is laser-etched on the side of the substrate 101 away from the second electrode layer 40. At the position corresponding to the first electrode block 201, the first electrode block 201 blocks the laser L1, thus retaining the second electrode block 401 of the second electrode layer 40; that is, the first electrode block 201 itself can act as a shielding layer. For unshielded positions, when the laser L2 etches the first non-display area BB, since there is no shielding, the second electrode layer 40 at that position is removed, thereby forming a... Figure 1 The hollowed-out area M in the first display area AA1 has improved overall transmittance and image quality because the second electrode layer 40 is removed. For the connection part 402, a protrusion 60 is provided, protruding away from the substrate 101. The second electrode layer 40 is located on the side of the protrusion 60 away from the substrate 101. When the laser L3 irradiates the protrusion 60, because the surface area of ​​the protrusion 60 is larger than that of the area without the protrusion 60, the laser energy per unit area is reduced when the same energy laser irradiates the protrusion 60. This reduced laser energy per unit area is insufficient to remove the second electrode layer 40, thus retaining the second electrode layer 40 as the connection part 402. The connection part 402 connects to the adjacent second electrode block 401, ensuring signal transmission.

[0063] Compared with related technologies, the display panel in this embodiment has at least the following beneficial effects:

[0064] In this invention, a portion of the second electrode layer 40 in the first display area AA1 is removed while the second electrode block 401 and the connecting portion 402 are retained. When fabricating the display panel 100, after the array layer 102 and the light-emitting device 103 are fabricated, the first display area AA1 is laser-etched on the side of the substrate 101 away from the second electrode layer 40. At the position corresponding to the first electrode block 201, the first electrode block 201 will block the laser, thereby retaining the second electrode block 401 of the second electrode layer 40. That is, the first electrode block 201 itself can serve as a shielding layer. For positions without anode shielding and not overlapping with protrusion 60, when the laser irradiates the first non-display area BB, the second electrode layer 40 is removed due to the lack of any shielding, thus forming a hollow area M. The removal of the second electrode layer 40 in the hollow area M improves the overall transmittance of the first display area AA1, enhancing image quality. For the connection portion 402, a protrusion 60 is provided in this invention, protruding away from the substrate 101. The second electrode layer 40 is located on the side of the protrusion 60 away from the substrate 101. When the laser irradiates the protrusion 60, because the surface area of ​​the protrusion 60 is larger than that of a position without the protrusion 60, the laser energy per unit area is reduced when the same energy laser irradiates the protrusion 60. This reduced laser energy per unit area is insufficient to remove the second electrode layer 40, thus retaining the second electrode layer 40 as the connection portion 402. The connection portion 402 connects to the adjacent second electrode block 401, ensuring signal transmission. In this invention, there is no need to set a metal shielding layer in the array layer 102, which reduces the complexity of the manufacturing process. Therefore, there is no need to add a mask to make the metal shielding layer, which reduces the cost.

[0065] In some alternative embodiments, refer to Figure 3 , Figure 3 yes Figure 1 A cross-sectional view along the B-B' direction. In the first section 70, the protrusion 60 includes a first side 601 and a second side 602 opposite to each other and a third side 603 connecting the first side 601 and the second side 602. The first side 601 is located on the side of the second side 602 away from the substrate 101. The first section 70 is perpendicular to the plane where the substrate 101 is located.

[0066] The angle between the second side 602 and the third side 603 is α, where 30°≤α≤90°.

[0067] It is understood that the direction of the first cross section 70 is the same as the direction of B-B'. On the first cross section 70, the protrusions 60 form a closed shape, including a first side 601, a third side 603, and a second side 602 connected in sequence. The first side 601 is located on the side of the second side 602 away from the substrate 101. Figure 3The diagram uses lines of varying thicknesses to schematically distinguish the first side 601, the second side 602, and the third side 603. The included angle between the second side 602 and the third side 603 is greater than or equal to 30° and less than or equal to 90°. For Figure 3 In the embodiment, since the third side 603 is an arc-shaped side, the angle between the second side 602 and the third side 603 can refer to the angle between the tangent direction of the third side 603 and the second side 602.

[0068] On the one hand, the angle between the second side 602 and the third side 603 cannot be too small. If the angle is too small, the inclination of the third side 603 will be small, increasing the complexity of forming the protrusion 60. On the other hand, if the angle is too large, i.e., greater than 90°, the side of the third side 603 closest to the second side 602 will be suspended, resulting in structural instability. When the display panel 100 is subjected to pressure, cracks will appear at the connection between the second side 602 and the third side 603, affecting the overall quality of the display panel 100. In this embodiment, the angle between the second side 602 and the third side 603 is greater than or equal to 30° and less than or equal to 90°, which does not increase the manufacturing difficulty of the protrusion 60 and also ensures the stability of the second side 602 and the third side 603.

[0069] In this embodiment, the angle between the second side 602 and the third side 603 of the protrusion 60 is 30°≤α≤90°. The second electrode layer 40 is located on the side of the protrusion 60 away from the substrate 101. When the laser irradiates the protrusion 60, since the surface area of ​​the protrusion 60 is larger than that of the location without the protrusion 60, the laser energy per unit area is reduced when the same energy laser irradiates the protrusion 60. The reduced laser energy per unit area is insufficient to remove the second electrode layer 40, thus the second electrode layer 40 is retained as the connecting part 402. The connecting part 402 connects to the adjacent second electrode block 401 to ensure signal transmission. In this invention, there is no need to set a metal shielding layer in the array layer 102, which reduces the complexity of the manufacturing process. Therefore, there is no need to add a mask to make the metal shielding layer, which reduces the cost.

[0070] In some alternative embodiments, reference continues to be made to... Figure 1 and Figure 3 The orthographic projection of the connecting part 402 onto the plane of the substrate 101 is a quadrilateral.

[0071] The orthographic projection of the protrusion 60 on the first cross section 70 includes an arc, and the first cross section 70 is perpendicular to the plane where the substrate 101 is located.

[0072] Figure 3The orthographic projection of the protrusion 60 on the first cross-section 70 includes an arc, that is, both the first side 601 and the third side 603 are arcs. When the laser irradiates the protrusion 60 from the side of the substrate 101 away from the second electrode layer 40, the laser energy per unit area decreases when the same energy laser irradiates the protrusion 60. This decrease in energy per unit area is insufficient to remove the second electrode layer 40, thus retaining the second electrode layer 40 as the connecting portion 402. At this time, if... Figure 1 As shown, the orthographic projection of the connection portion 402 onto the plane of the substrate 101 is a quadrilateral. The connection portion 402 extends from one second electrode block 401 to an adjacent second electrode block 401 along the arc of the protrusion 60, connecting the adjacent second electrode blocks 401 to ensure signal transmission.

[0073] In some alternative embodiments, refer to Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 , Figure 4 This is a schematic diagram of a planar structure of another display panel provided by the present invention. Figure 5 yes Figure 4 A magnified view of a portion of region N. Figure 6 yes Figure 5 A cross-sectional view along the C-C' direction. Figure 7 yes Figure 5 A cross-sectional view along the D-D' direction. Figure 8 yes Figure 5 Another cross-sectional view along the C-C' direction. Figure 9 yes Figure 5 Another cross-sectional view along the D-D' direction shows that the connecting portion 402 includes two connecting sub-portions 4020, with a first interval 80 between adjacent connecting sub-portions 4020; the first side 601 is parallel to the plane of the substrate 101.

[0074] Specifically, Figure 6 and Figure 7 The projection of protrusion 60 onto the first section 70 is trapezoidal, and the angle α between the second side 602 and the third side 603 is greater than or equal to 30° and less than 90°. (Refer to...) Figure 6 and Figure 7Laser L3 enters the protrusion 60 from the second side 602 and exits from the first side 601. Therefore, the second electrode layer 40 at the position of the first side 601 will be removed. Laser L4 enters the protrusion 60 from the second side 602 and exits at the position of the third side 603. Since the area of ​​the position corresponding to the third side 603 is larger than that of the position corresponding to the first side 601, the laser energy per unit area will decrease. Therefore, the second electrode layer 40 corresponding to the third side 603 is retained as a connecting part 402 to connect the adjacent second electrode block 401. The second electrode layer 40 at the placement point is removed, so the remaining connection portion 402 includes two opposing connection sub-parts 4020, with a first gap 80 between the two connection sub-parts 4020. Of course, the width of the first gap 80 is equal to the width of the first side 601. In this embodiment, although there is a first gap 80 between the two connection sub-parts 4020 on the first cross-section 70, the connection sub-parts 4020 have a certain thickness in the direction perpendicular to the plane where the substrate 101 is located, which still ensures signal transmission between adjacent second electrode blocks 401.

[0075] Specifically, refer to Figure 8 and Figure 9 The projection of the protrusion 60 onto the first cross-section 70 is rectangular. The angle α between the second side 602 and the third side 603 is 90°. The laser L3 enters the protrusion 60 from the second side 602 and exits from the first side 601. Therefore, the second electrode layer 40 at the position of the first side 601 will be removed. The second electrode layer 40 corresponding to the third side 603 is retained as a connecting part 402 to connect the adjacent second electrode block 401. Since the second electrode layer 40 at the position corresponding to the first side 601 is removed, the retained connecting part 402 includes the relative... The two connecting sub-parts 4020 have a first gap 80 between them. The width of the first gap 80 is equal to the width of the first side 601 and the width of the first gap 80 is also equal to the width of the second side 602. In this embodiment, although there is a first gap 80 between the two connecting sub-parts 4020 on the first cross-section 70, the connecting sub-parts 4020 have a certain thickness in the direction perpendicular to the plane of the substrate 101, which still ensures the signal transmission between adjacent second electrode blocks 401.

[0076] In some alternative embodiments, reference continues to be made to... Figure 6 and Figure 7 In the direction extending along the third side 603, the length of the connecting sub-part 4020 is L, the thickness of the second electrode layer 40 in the direction perpendicular to the plane of the substrate 101 is n, and the height of the protrusion 60 in the direction perpendicular to the plane of the substrate 101 is h, where L = h / sinα + n.

[0077] Figure 6 and Figure 7 In the middle, the projection of the protrusion 60 on the first section 70 is trapezoidal, and the angle α between the second side 602 and the third side 603 is greater than or equal to 30° and less than 90°. When manufacturing the display panel 100, the protrusion 60 of the functional layer 50 is manufactured first, and then the second electrode layer 40 is manufactured. Therefore, the second electrode layer 40 will cover the protrusion 60. At this time, the second electrode layer 40 will be attached to the third side 603 and the first side 601 of the protrusion 60. The length of the connecting part 4020 along the direction extending along the third side 603 is L, which is perpendicular to the protrusion 60. The height h in the direction of the plane where the substrate 101 is located satisfies a trigonometric function. Of course, since the second electrode layer 40 also covers the side of the first side 601 away from the substrate 101 after the protrusion 60 is provided, L=h / sinα+n. In this invention, the length of the connecting sub-part 4020 in the third extension direction is large enough to meet the signal transmission, thereby compensating for the weakening of signal transmission capability caused by the removal of the second electrode layer 40 within the first interval 80 due to the first interval 80 between the two connecting sub-parts 4020.

[0078] In some alternative embodiments, reference continues to be made to... Figure 8 and Figure 9 α = 90°, and in the direction perpendicular to the plane of the substrate 101, the height of the connecting sub-part 4020 is equal to the sum of the height of the protrusion 60 and the thickness of the second electrode layer 40.

[0079] It is understandable that L = h / sinα + n. When α = 90°, L = h + n. That is, in the direction perpendicular to the plane of the substrate 101, the height of the connecting sub-part 4020 is equal to the sum of the height of the protrusion 60 and the thickness of the second electrode layer 40. On the other hand, when manufacturing the display panel 100, the protrusion 60 of the functional layer 50 is first manufactured, and then the second electrode layer 40 is manufactured. Therefore, the second electrode layer 40 will cover the protrusion 60. At this time, the second electrode layer 40 will be attached to the third side 603 and the first side 601 of the protrusion 60. The second electrode layer 40 at the corresponding position of the first side 601 is removed by laser. Therefore, the second electrode layer 40 corresponding to the third side 603 is retained as a connecting part 402 to connect the adjacent second electrode block 401. Then, in the direction perpendicular to the plane of the substrate 101, the height of the connecting part 4020 is equal to the sum of the height of the protrusion 60 and the thickness of the second electrode layer 40. In this invention, the height of the connecting part 4020 in the direction perpendicular to the plane of the substrate 101 is large enough to meet the signal transmission, thereby compensating for the weakening of signal transmission capability caused by the removal of the second electrode layer 40 in the first interval 80 due to the first interval 80 between the two connecting parts 4020.

[0080] In some alternative embodiments, refer to Figure 10 , Figure 10 yes Figure 1 Another cross-sectional view along the A-A' direction shows that the display panel 100 also includes a pixel definition layer 105 located on one side of the substrate 101, and the light-emitting device 103 is located in the opening of the pixel definition layer 105. The pixel definition layer 105 is reused as a functional layer 50.

[0081] Figure 10 The device has a pixel definition layer 105, which can be formed of organic materials such as polyimide, polyamide, benzocyclobutene, acrylic resin or phenolic resin, and the light-emitting device 103 is located in the opening of the pixel definition layer 105.

[0082] When forming the pixel definition layer 105, the thickness of the corresponding first display area AA1 can be greater than the thickness of the second display area AA2. The area where the protrusion 60 is not provided can be thinned, so that the protrusion 60 is formed on the side of the pixel definition layer 105 away from the substrate 101. In some optional embodiments, the protrusion 60 can be formed using a halftone mask. It is understood that the halftone mask method makes it easier to form the protrusion 60 on the side of the pixel definition layer 105 away from the substrate 101, and the method is simple. Related techniques can be used for the halftone mask method, which will not be elaborated here.

[0083] In this invention, the pixel definition layer 105 is reused as a functional layer 50, and a protrusion 60 is formed on the side of the pixel definition layer 105 away from the substrate 101. Therefore, there is no need to add other film layers to form the protrusion 60, which simplifies the manufacturing process.

[0084] In some alternative embodiments, refer to Figure 11 , Figure 11 yes Figure 1 A cross-sectional view along line E-E' shows that the display panel 100 also includes a pixel definition layer 105 located on one side of the substrate 101, and the light-emitting device 103 is located within the opening of the pixel definition layer 105.

[0085] The display panel 100 also includes a support pillar 90 located on the side of the pixel definition layer 105 away from the substrate 101. The protrusion 60 is manufactured in the same layer and with the same process as the support pillar 90, and in the direction perpendicular to the plane of the substrate 101, the height of the protrusion 60 is less than the height of the support pillar 90.

[0086] Understandably, when fabricating the organic self-emissive display panel 100, support pillars 90 are set in the non-display area BB. The support pillars 90 are located on the side of the pixel definition layer 105 away from the substrate 101, and are used to support the photomask. This photomask is used for depositing the light-emitting layer 30. Figure 11The diagram only schematically shows one sub-pixel in the second display area AA2, representing the actual number of sub-pixels in the second display area AA2. During the deposition of the light-emitting layer 30, a mask is used to sequentially deposit the light-emitting material on the side of the second electrode block 401 away from the substrate 101. To prevent the mask from rubbing against the second electrode layer 40, multiple support pillars 90 are provided in the non-display area BB. The mask is placed on the support pillars 90, which support the mask, thereby preventing the mask from affecting the second electrode layer 40.

[0087] In this embodiment, the protrusion 60 and the support column 90 are manufactured in the same layer and with the same process. Of course, the protrusion 60 and the support column 90 are also made of the same material, which simplifies the manufacturing process and eliminates the need to add other processes to manufacture the protrusion 60.

[0088] It should be noted that in this embodiment, the height of the protrusion 60 in the direction perpendicular to the plane of the substrate 101 is less than the height of the support pillar 90. If the height of the protrusion 60 is greater than the height of the support pillar 90, it will support the mask to a certain extent, causing the upper surface of the mask to bend at the position of the first display area AA1, especially protruding towards the side away from the substrate 101. This would result in uneven thickness during the deposition of the light-emitting layer 30, affecting the light-emitting performance of the display panel 100. In this embodiment, the protrusion 60 and the support pillar 90 are manufactured in the same layer and with the same process, and the height of the protrusion 60 is less than the height of the support pillar 90 in the direction perpendicular to the plane of the substrate 101. This simplifies the manufacturing process and does not affect the support pillar 90's support of the mask.

[0089] In some alternative embodiments, reference continues to be made to... Figure 2 The display panel 100 also includes a pixel definition layer 105 located on one side of the substrate 101, a light-emitting device 103 located in the opening of the pixel definition layer 105, and a functional layer 50 located on the side of the pixel definition layer 105 away from the substrate 101.

[0090] Figure 2 In this embodiment, a functional layer 50 is separately fabricated on the side of the pixel definition layer 105 away from the substrate 101 to form a protrusion 60. There is no need to thin the pixel definition layer 105 to form the protrusion 60. The protrusion 60 can be fabricated separately after the pixel definition layer 105 is fabricated, which can also simplify the manufacturing process.

[0091] In some alternative embodiments, refer to Figure 12 , Figure 13 and Figure 14 , Figure 12 yes Figure 1 A magnified view of a portion of region P. Figure 13 yes Figure 12 A cross-sectional view along the F-F' direction. Figure 14yes Figure 5 A cross-sectional view along the G-G' direction.

[0092] The first display area AA includes a central area 91 and an edge area 92, with the edge area 92 located on the side of the central area 91 close to the second display area AA2; the orthographic projection area of ​​the protrusion 60 in the central area 91 onto the plane of the substrate 101 is smaller than the orthographic projection area of ​​the protrusion 60 in the edge area 92 onto the plane of the substrate 101; or, the connecting portion 402 includes two connecting sub-portions 4020, with a first interval 80 between adjacent connecting sub-portions 4020, the first side 601 being parallel to the plane of the substrate 101, and the width of the first interval 80 in the central area 91 being greater than the width of the first interval 80 in the edge area 92.

[0093] Figure 12 and Figure 13 In the central region 91, the projected area of ​​the protrusion 60 on the plane of the substrate 101 is smaller than the projected area of ​​the protrusion 60 on the plane of the substrate 101 in the edge region 92. Figure 5 and Figure 14 In the central region 91, the height of the protrusion 60 in the direction perpendicular to the plane of the substrate 101 is less than the height of the protrusion 60 in the edge region 92 in the direction perpendicular to the plane of the substrate 101.

[0094] It is understandable that image acquisition elements such as cameras will be installed at the position corresponding to the first display area AA1. During image acquisition, the light transmittance of the central area 91 needs to be higher, while the transmittance of the edge area 92 can be lower than that of the central area 91, still meeting the requirements for image acquisition. Therefore, the portion of the second electrode layer 40 removed in the central area 91 is larger than the portion of the second electrode layer 40 removed in the edge area 92. Since the second electrode block 401 is retained by the first electrode block 201 as a shielding layer, the area of ​​the second electrode block 401 is equal in both the central area 91 and the edge area 92. Therefore, the orthographic projection area of ​​the connection portion 402 retained in the central area 91 onto the plane of the substrate 101 needs to be smaller than the orthographic projection area of ​​the connection portion 402 retained in the edge area 92 onto the plane of the substrate 101.

[0095] like Figure 12 and Figure 13In this embodiment, the projected area of ​​the protrusion 60 in the central region 91 onto the plane of the substrate 101 is smaller than that of the protrusion 60 in the edge region 92 onto the plane of the substrate 101. Since the connection portion 402 is retained at the position corresponding to the protrusion 60 during laser engraving, the smaller the projected area of ​​the protrusion 60 onto the plane of the substrate 101, the smaller the projected area of ​​the retained connection portion 402 onto the plane of the substrate 101, which is more conducive to improving transmittance. In this embodiment, the projected area of ​​the protrusion 60 in the central region 91 onto the plane of the substrate 101 is smaller than that of the protrusion 60 in the edge region 92 onto the plane of the substrate 101, and the projected area of ​​the retained connection portion 402 in the central region 91 onto the plane of the substrate 101 is smaller than that of the retained connection portion 402 in the edge region 92 onto the plane of the substrate 101, the transmittance of the central region 91 is greater than that of the edge region 92, which is beneficial to improving image imaging quality.

[0096] Figure 5 and Figure 15 In this embodiment, the retained connecting portion 402 includes two opposing connecting sub-portions 4020, with a first gap 80 between them. The width of the first gap 80 is equal to the width of the first side 601. Therefore, the larger the width of the first side 601, the larger the width of the first gap 80, and the smaller the width of the retained connecting sub-portion 4020, which is more conducive to improving transmittance. In this embodiment, the width of the first gap 80 in the central region 91 is greater than the width of the first gap 80 in the edge region 92. Here, the width refers to the width on the first cross-section 70. Therefore, the width of the connecting sub-portion 4020 in the central region 91 is smaller than the width of the connecting sub-portion 4020 in the edge region 92. The orthographic projection area of ​​the connecting sub-portion 4020 in the central region 91 onto the plane of the substrate 101 is smaller than the orthographic projection area of ​​the connecting sub-portion 4020 in the edge region 92 onto the plane of the substrate 101. The transmittance of the central region 91 is greater than that of the edge region 92, thereby improving image imaging quality. Optionally, such as... Figure 15 As shown, since the width of the connecting sub-part 4020 in the central region 91 is smaller than the width of the connecting sub-part 4020 in the edge region 92, in order to ensure the stability of signal transmission, the height of the protrusion 60 in the central region 91 is greater than the height of the protrusion 60 in the edge region 92 in a direction perpendicular to the plane of the substrate 101. In this way, the height of the connecting sub-part 4020 retained in the central region 91 will be greater than the height of the connecting sub-part 4020 retained in the edge region 92, ensuring that the cross-sectional area of ​​the connecting sub-part 4020 remains unchanged to achieve signal transmission.

[0097] Based on the same inventive concept, the present invention also provides a method for manufacturing a display panel, wherein the display panel is as described above. Figures 1 to 14The display panel 100 in any embodiment includes a first display area AA1 and a second display area AA2 that at least partially surrounds the first display area AA1, wherein the light transmittance of the first display area AA1 is greater than the light transmittance of the second display area AA2; see reference. Figure 15 , Figure 15 This invention provides a method for manufacturing a display panel, the method comprising the following steps:

[0098] S1, providing a substrate 101;

[0099] S2, forming a light-emitting device 103, including forming a patterned first electrode layer 20 on one side of a substrate 101, the first electrode layer 20 including a plurality of first electrode blocks 201, and forming a light-emitting layer 30 and a second electrode layer 40 on the side of the first electrode layer 20 away from the substrate 101.

[0100] S3, corresponding to the first display area AA1, before forming the second electrode layer 40, also includes forming a functional layer 50, the functional layer 50 including a protrusion 60 protruding away from the substrate 101.

[0101] S4, corresponding to the first display area AA1, the second electrode layer 40 is irradiated by laser on the side of the substrate 101 away from the second electrode layer 40, and a second electrode block 401 is formed at the position corresponding to the first electrode block 201, and a connecting portion 402 is formed at the position corresponding to the protrusion 60. The second electrode block 401 and the connecting portion 402 are electrically connected.

[0102] Combination Figure 16 , Figure 16 This is a process diagram of manufacturing a display panel provided by the present invention. Figure 16 The image also shows array layer 102. Figure 16 To make Figure 1 Taking the cross-sectional view of A-A' as an example, an adaptive explanation will be given for... Figure 6 and Figure 8 The cross-sectional structural steps and Figure 16 The steps are the same, the only difference being the shape of the protruding cross section, which will not be elaborated here.

[0103] In step S3, a protrusion 60 is formed in the functional layer 50 of the first display area AA1, protruding away from the substrate 101. The protrusion 60 is used to reduce the laser energy per unit area during the subsequent laser lithography in step S4.

[0104] In step S4, the first display area AA1 is laser-etched on the side of the substrate 101 away from the second electrode layer 40, corresponding to the position of the first electrode block 201. The first electrode block 201 blocks the laser, thus preserving the second electrode block 40 of the second electrode layer 40; that is, the first electrode block 201 itself can act as a shielding layer. For positions without anode shielding and not overlapping with the protrusion 60, when the laser etches the first non-display area BB, since there is no shielding, the second electrode layer 40 at that position is removed, thereby forming a hollow area M (e.g., ...). Figure 1 As shown, in the hollowed-out area M, the removal of the second electrode layer 40 improves the overall transmittance of the first display area AA1 and enhances the imaging quality. Regarding the protrusion 60, it protrudes away from the substrate 101. The second electrode layer 40 is located on the side of the protrusion 60 away from the substrate 101. When the laser irradiates the protrusion 60, because the surface area of ​​the protrusion 60 is larger than that of the area without the protrusion 60, the laser energy per unit area decreases when the same energy laser irradiates the protrusion 60. This decrease in laser energy per unit area is insufficient to remove the second electrode layer 40, thus retaining the second electrode layer 40 as the connecting part 402. The connecting part 402 connects to the adjacent second electrode block 401, ensuring signal transmission.

[0105] In this invention, there is no need to set a metal shielding layer in the array layer 102, which reduces the complexity of the manufacturing process. Therefore, there is no need to add a mask to make the metal shielding layer, which reduces the cost.

[0106] Based on the same inventive concept, the present invention also provides a display device. Figure 17 The diagram shows a structural representation of a display device according to an embodiment of the present invention. The display device 200 includes a display panel 100 as described in any of the above embodiments and an image acquisition element 2001 located away from the light-emitting surface of the display panel 100. The image acquisition element 2001 can be a camera. In a direction perpendicular to the plane of the display panel, the image acquisition element 2001 at least partially overlaps with a first display area AA1. Optionally, the orthographic projection of the image acquisition element 2001 onto the light-emitting surface is located in the first display area AA1. It should be noted that the embodiments of the display device 200 provided in this application can refer to the embodiments of the display module described above, and repeated details will not be repeated. The display device provided in this application can be any product or component with real-world functionality, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator.

[0107] As can be seen from the above embodiments, the display panel, its manufacturing method, and the display device provided by the present invention achieve at least the following beneficial effects:

[0108] The display panel of the present invention removes part of the second electrode layer in the first display area, retaining only the second electrode block and the connecting part. When manufacturing the display panel, after the array layer and the light-emitting device are manufactured, the first display area is laser-etched on the side of the substrate away from the second electrode layer. The first electrode block will block the laser at the position corresponding to the first electrode block, so the second electrode block of the second electrode layer is retained. That is, the first electrode block itself can serve as a shielding layer. For locations without anode shielding and not overlapping with the protrusions, when the laser irradiates the first non-display area, the second electrode layer is removed due to the lack of any obstruction, forming a hollow area. The removal of the second electrode layer in the hollow area improves the overall transmittance of the first display area, thus enhancing image quality. For the connecting portion, a protrusion is provided in this invention, extending away from the substrate. The second electrode layer is located on the side of the protrusion away from the substrate. When the laser irradiates the protrusion, because the surface area of ​​the protrusion is larger than that of the location without a protrusion, the laser energy per unit area is reduced when the same energy laser irradiates the protrusion. This reduced laser energy per unit area is insufficient to remove the second electrode layer, thus retaining it as the connecting portion. The connecting portion connects to adjacent second electrode blocks, ensuring signal transmission. This invention eliminates the need for a metal shielding layer in the array layer, reducing the complexity of the manufacturing process and eliminating the need for an additional mask to create the metal shielding layer, thereby reducing costs.

[0109] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A display panel, characterized by, The display panel comprises: a first display area and a second display area at least partially surrounding the first display area, the first display area having a higher light transmittance than the second display area; the display panel comprises a substrate and a light-emitting device, the light-emitting device being disposed on one side of the substrate; in a direction perpendicular to the plane where the substrate is located, the light-emitting device comprises a first electrode layer, a light-emitting layer, and a second electrode layer, the second electrode layer being located on a side of the light-emitting layer away from the substrate, and the first electrode layer comprising a plurality of first electrode blocks; in the first display area, the second electrode layer comprises a plurality of second electrode blocks and a plurality of connecting portions, the second electrode blocks and the first electrode blocks being overlapped in a direction perpendicular to the plane where the substrate is located, and adjacent second electrode blocks being connected by the connecting portions; the first display area further comprises a functional layer, the functional layer being located on a side of the second electrode layer close to the substrate, and the functional layer being provided with a protrusion on a side of the functional layer away from the substrate, the protrusion and the connecting portions being at least partially overlapped in a direction perpendicular to the plane where the substrate is located, and the protrusion being used for laser irradiation on a side of the substrate away from the second electrode layer during the manufacturing of the display panel, the laser being irradiated on the protrusion, and the laser energy per unit area being insufficient to remove the second electrode layer at the position of the protrusion, so that the second electrode layer at the position of the protrusion is reserved as the connecting portion.

2. The display panel of claim 1, wherein, in a first cross section, the protrusion comprises opposite first and second edges and a third edge connecting the first and second edges, the first edge being located on a side of the second edge away from the substrate, and the first cross section being perpendicular to the plane where the substrate is located; an angle between the second edge and the third edge is α, and 30°≤α≤90°.

3. The display panel of claim 2, wherein, a normal projection of the connecting portion on the plane where the substrate is located is a quadrilateral; a normal projection of the protrusion on the first cross section comprises an arc line, and the first cross section is perpendicular to the plane where the substrate is located.

4. The display panel of claim 2, wherein, the connecting portion comprises two connecting sub-portions, and a first interval is provided between adjacent connecting sub-portions; the first edge is parallel to the plane where the substrate is located.

5. The display panel of claim 4, wherein, in a direction along the third edge, a length of the connecting sub-portion is L, a thickness of the second electrode layer in a direction perpendicular to the plane where the substrate is located is n, and a height of the protrusion in a direction perpendicular to the plane where the substrate is located is h, and L=h / sinα.

6. The display panel of claim 4 or 5, wherein, when α=90°, a height of the connecting sub-portion in a direction perpendicular to the plane where the substrate is located is equal to a sum of the height of the protrusion and the thickness of the second electrode layer.

7. The display panel of claim 1, wherein, the display panel further comprises a pixel definition layer located on one side of the substrate, the light-emitting device being located in an opening of the pixel definition layer, and the pixel definition layer being multiplexed as the functional layer.

8. The display panel of claim 7, wherein, the protrusion is formed by a half-tone mask.

9. The display panel of claim 1, wherein, the display panel further comprises a pixel definition layer located on one side of the substrate, and the light-emitting device is located in an opening of the pixel definition layer. The display panel further comprises a support column on a side of the pixel definition layer away from the substrate base plate, the protrusion and the support column are made in the same layer and the same process, and in a direction perpendicular to a plane in which the substrate base plate is located, a height of the protrusion is less than a height of the support column.

10. The display panel of claim 1, wherein, The display panel further comprises a pixel definition layer on a side of the substrate base plate, the light emitting device is located in an opening of the pixel definition layer, and the functional layer is located on a side of the pixel definition layer away from the substrate base plate.

11. The display panel of claim 2, wherein, The first display area comprises a center area and an edge area, and the edge area is located on a side of the center area close to the second display area. A projection area of the protrusion in the center area on a plane in which the substrate base plate is located is less than a projection area of the protrusion in the edge area on the plane in which the substrate base plate is located. Alternatively, the connecting part comprises two connecting subparts, a first interval is provided between adjacent connecting subparts, the first side is parallel to a plane in which the substrate base plate is located, and a width of the first interval in the center area is greater than a width of the first interval in the edge area.

12. A manufacturing method of a display panel, comprising: The display area comprises a first display area and a second display area at least partially surrounding the first display area, and a light transmittance of the first display area is greater than a light transmittance of the second display area. The manufacturing method comprises: providing a substrate base plate; forming a light emitting device, comprising forming a patterned first electrode layer on a side of the substrate base plate, the first electrode layer comprising a plurality of first electrode blocks, forming a light emitting layer and a second electrode layer on a side of the first electrode layer away from the substrate base plate; corresponding to the first display area, further comprising forming a functional layer before forming the second electrode layer, the functional layer comprising a protrusion protruding away from the substrate base plate; corresponding to the first display area, forming a second electrode block on a side of the substrate base plate away from the second electrode layer by laser irradiation on the second electrode layer, the laser irradiation being on the protrusion, and unit area laser energy being reduced and being insufficient to remove the second electrode layer at a position of the protrusion, a connecting part being formed corresponding to the position of the protrusion, and the second electrode block and the connecting part being electrically connected.

13. A display device comprising: The display panel comprises any one of claims 1 to 11, and further comprises an image acquisition element on a side of the display panel away from a light emitting surface, and in a direction perpendicular to a plane in which the display panel is located, the image acquisition element at least partially overlaps the first display area.

Images