Patent Publication Number: US-2023165110-A1

Title: Display panel and method for manufacturing the same, and display apparatus

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application is a national phase entry under 35 USC 371 of International Patent Application No. PCT/CN2021/070183, filed on Jan. 4, 2021, which is incorporated herein by reference in its entirety. 
     TECHNICAL HELD 
     The present disclosure relates to the field of display technologies, and in particular, to a display panel and a method for manufacturing the same, and a display apparatus. 
     BACKGROUND 
     With the increase of people&#39;s requirements for visual experience, in order to improve a visual effect of a display screen, it is necessary to increase a proportion of a display area in the display screen as much as possible, i.e., to increase a screen-to-body ratio of the display screen. A display screen with a screen-to-body ratio of 100% or approximately 100% is generally referred to as a “full screen”. 
     To achieve a design of the “full screen”, a front camera needs to be disposed on a back side of the display screen (i.e., a side opposite to a light-exit side of the display screen). When working, the front camera needs enough amount of light input to take a clear picture. Therefore, a light transmittance of an area corresponding to the front camera of the display screen is required to be relatively high. 
     SUMMARY 
     In an aspect, a display panel is provided. The display panel has a display area including a light-transmissive area and a main display area located at a periphery of the light-transmissive area. The display panel includes a substrate, a plurality of shielding patterns, a plurality of light-emitting layers and a plurality of cathodes. The plurality of shielding patterns are disposed on the substrate and located in the light-transmissive area, and orthogonal projections of the plurality of shielding patterns on the substrate are separated from each other. The plurality of light-emitting layers are disposed in the light-transmissive area and on the substrate. The plurality of cathodes are disposed in the light-transmissive area and located on a side of the plurality of light-emitting layers away from the substrate. Each light-emitting layer and a respective cathode constitute a portion of a light-emitting device. The light-emitting device has an active light-emitting area, and an orthogonal projection of the active light-emitting area on the substrate is located within an orthogonal projection of a cathode of the light-emitting device on the substrate. The cathode is located at a side of a respective shielding pattern away from the substrate. An orthogonal projection of the shielding pattern on the substrate covers the orthogonal projection of the cathode on the substrate. 
     In some embodiments, a transmittance of the cathode to visible light is greater than a transmittance of the cathode to infrared light; and a transmittance of the shielding pattern to infrared light is less than or equal to 2%. 
     In some embodiments, the shielding pattern is located on a side of the light-emitting layer proximate to the substrate, and the shielding pattern is further used as an anode of the light-emitting device. 
     In some embodiments, the display panel further includes a plurality of anodes disposed in the light-transmissive area and located on a side of the plurality of light-emitting layers proximate to the substrate. The plurality of shielding patterns are located at a side of the plurality of anodes proximate to the substrate, The orthogonal projection of the shielding pattern on the substrate is at least partially overlapped with an orthogonal projection of a respective anode on the substrate. 
     In some embodiments, the display panel further includes a semiconductor layer, a gate metal layer and a source-drain metal layer. The semiconductor layer is located between the substrate and the plurality of anodes, The gate metal layer is located between the substrate and the plurality of anodes. The source-drain metal layer is farther away from the substrate than the semiconductor layer and the gate metal layer, and is located on the side of the plurality of anodes proximate to the substrate. The shielding patterns are located in the semiconductor layer or the gate metal layer or the source-drain metal layer. 
     In some embodiments, a transmittance of the shielding pattern to visible light is greater than a transmittance of the shielding pattern to infrared light; and a thickness of the shielding pattern is greater than a thickness of the cathode. 
     In some embodiments, a material of the cathode includes a magnesium-silver alloy, and a material of the shielding pattern includes silver. 
     In some embodiments, the cathode includes a cathode body portion and a cathode connection portion. The orthogonal projection of the anode on the substrate covers an orthogonal projection of the cathode body portion on the substrate, The cathode connection portion is electrically connected to the cathode body portion, and an orthogonal projection of the cathode connection portion on the substrate is not overlapped with the orthogonal projection of the anode on the substrate. 
     In some embodiments, the shielding pattern includes a shielding pattern body portion and a shielding pattern connection portion. An orthogonal projection of the shielding pattern body portion on the substrate covers the orthogonal projection of the cathode body portion on the substrate. The shielding pattern connection portion is connected to the shielding pattern body portion, and an orthogonal projection of the shielding pattern connection portion on the substrate covers the orthogonal projection of the cathode connection portion on the substrate. 
     In some embodiments, the display panel further includes a transparent conductive layer and a first insulating layer. The transparent conductive layer is located between a film layer in which the plurality of shielding patterns are located and the plurality of anodes, and the first insulating layer is located between the transparent conductive layer and the plurality of cathodes. A plurality of first via holes are provided in the first insulating layer, and a gap exists between an orthogonal projection of each first via hole on the substrate and an orthogonal projection of an adjacent anode on the substrate. The orthogonal projection of the first via hole on the substrate is located within an orthogonal projection of a respective cathode connection portion on the substrate. Each cathode is electrically connected to the transparent conductive layer through at least one first via hole. 
     In some embodiments, the display panel further includes at least one cathode connection structure made of a same material as the cathode and disposed in a same layer as the cathode. A dimension of the cathode connection structure in a first direction is greater than a dimension of the cathode connection structure in a second direction. Each cathode connection structure is electrically connected to two cathodes adjacent to the cathode connection structure, The first direction is a row direction in which a plurality of sub-pixels of the display panel are arranged, and the second direction is a column direction in which the plurality of sub-pixels of the display panel are arranged, 
     In some embodiments, the at least one cathode connection structure includes a plurality of cathode connection structures arranged in a plurality of rows, and each row includes cathode connection structures arranged in the first direction. Each row of cathode connection structures and portions of cathodes connected to the cathode connection structures in the row constitute a cathode connection strip. In the second direction, the cathode connection strip has substantially a same dimension as each cathode connection structure. 
     In some embodiments, the display panel further includes a plurality of shielding connection structures arranged in a plurality of rows. The plurality of shielding connection structures are made of a same material as the plurality of shielding patterns and disposed in a same layer as the plurality of shielding patterns. Each row includes shielding connection structures arranged in the first direction. Each row of shielding connection structures and portions of shielding patterns connected to the shielding connection structures in the row constitute a shielding connection strip. The display panel includes a plurality of cathode connection strips. An orthogonal projection of the shielding connection strip on the substrate covers an orthogonal projection of a respective cathode connection strip on the substrate. 
     In some embodiments, the anode includes a first anode portion and a second anode portion. A shape of the first anode portion is substantially the same as a shape of the active light-emitting area of the light-emitting device, and a border of the first anode portion is partially overlapped with a border of the anode. The second anode portion is electrically connected to the first anode portion. The cathode includes a first cathode portion and a second cathode portion. An orthogonal projection of the first cathode portion on the substrate is covered by an orthogonal projection of the first anode portion on the substrate. The second cathode portion is electrically connected to the first cathode portion. An orthogonal projection of the second cathode portion on the substrate is covered by an orthogonal projection of the second anode portion on the substrate. 
     In some embodiments, the display panel further includes a pixel circuit layer, a second insulating layer, a connection wire layer and a third insulating layer that are sequentially arranged in a direction perpendicular to the substrate and pointing from the substrate to the anode, and are disposed between the substrate and a film layer where the plurality of anodes are located. The pixel circuit layer includes a plurality of first pixel circuits disposed at the periphery of the light-transmissive area. A plurality of second via holes are provided in the second insulating layer, and a plurality of third via holes are provided in the third insulating layer. The connection wire layer includes a plurality of connection wires, a first end of each connection wire is electrically connected to a respective first pixel circuit through a respective second via hole, and a second end of the connection wire is electrically connected to a second anode portion of a respective anode through a respective third via hole. 
     In some embodiments, the connection wire layer further includes a plurality of pads, each pad is electrically connected to a second end of a respective connection wire, and each pad is electrically connected to a second anode portion of a respective anode through a respective third via hole. 
     In another aspect, a method for manufacturing a display panel is provided. The method includes: fabricating a plurality of shielding patterns separated from each other on a substrate; fabricating a plurality of light-emitting layers on a side of the plurality of shielding patterns away from the substrate; fabricating a cathode film on a side of the plurality of light-emitting layers away from the substrate; and irradiating an area of the substrate corresponding to a light-transmissive area of the display panel from a side of the substrate away from the cathode film by using a laser beam to remove portions that are not shielded by the plurality of shielding patterns in a portion of the cathode film located in the area, so as to form a plurality of cathodes separated from each other. Each light-emitting layer and a respective cathode constitutes a portion of a light-emitting device. The light-emitting device has an active light-emitting area, and an orthogonal projection of the active light-emitting area on the substrate is located within an orthogonal projection of the cathode on the substrate. 
     In some embodiments, fabricating the plurality of shielding patterns separated from each other on the substrate, includes: fabricating a plurality of anodes separated from each other on the substrate. An anode is as a shielding pattern. 
     In some embodiments, fabricating the plurality of shielding patterns separated from each other on the substrate, includes: fabricating a patterned semiconductor layer, a patterned gate metal layer and a patterned source-drain metal layer on the substrate; forming the plurality of shielding patterns in a process of forming the patterned semiconductor layer or gate metal layer or source-drain metal layer. The source-drain metal layer is farther away from the substrate than the semiconductor layer and the gate metal layer. After fabricating the plurality of shielding patterns separated from each other on the substrate and before fabricating the plurality of light-emitting layers, the method further includes: fabricating a plurality of anodes. Each light-emitting device includes a respective anode. 
     In yet another aspect, a display apparatus is provided. The display apparatus includes a display panel and a functional device, and the display panel is the display panel in any of the above embodiments. The functional device is disposed on a back side of the display panel and located in the light-transmissive area of the display panel. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       In order to describe technical solutions in the present disclosure more clearly, accompanying drawings to be used in some embodiments of the present disclosure will be introduced briefly below. However, the accompanying drawings to be described below are merely accompanying drawings of some embodiments of the present disclosure, and a person of ordinary skill in the art may obtain other drawings according to these drawings. In addition, the accompanying drawings to be described below may be regarded as schematic diagrams, and are not limitations on actual sizes of products, actual processes of methods and actual timings of signals involved in the embodiments of the present disclosure. 
         FIG.  1    is a top view of a display panel, in accordance with some embodiments; 
       FIG,  2  is a sectional view of the display panel in  FIG.  1    taken along the section line A-A; 
         FIG.  3    is a sectional view of the display panel in  FIG.  1    taken along the section line B-B; 
         FIG.  4    is an enlarged view of the area M in  FIG.  1   ; 
         FIG.  5    is a sectional view of the area M in  FIG.  4    taken along the section line C-C; 
         FIG.  6 A  is a top view of cathodes in a light-transmissive area, in accordance with some embodiments; 
       FIG,  6 B is a top view of anodes in a light-transmissive area, in accordance with some embodiments; 
         FIG.  6 C  is a sectional view of the cathodes in the light-transmissive area in  FIG.  6 A  taken along the section line D-D; 
         FIG.  7 A  is another top view of cathodes in a light-transmissive area, in accordance with some embodiments; 
         FIG.  7 B  is another top view of anodes in a light-transmissive area, in accordance with some embodiments; 
         FIG.  7 C  is a top view of shielding patterns, in accordance with some embodiments; 
         FIG.  8 A  is a sectional view of the cathodes in the light-transmissive area in  FIG.  7 A  taken along section lines E′-E′ and E″-E″; 
         FIG.  8 B  is another sectional view of the cathodes in the light-transmissive area in  FIG.  7 A  taken along section lines E′-E′ and E″-E″; 
         FIG.  8 C  is yet another sectional view of the cathodes in the light-transmissive area in  FIG.  7 A  taken along section lines E′-E′ and E″-E″; 
         FIG.  8 D  is yet another sectional view of the cathodes in the light-transmissive area in  FIG.  7 A  taken along section lines E′-E′ and E″-E″; 
         FIG.  9    is yet another top view of cathodes in a light-transmissive area, in accordance with some embodiments; 
         FIG.  10 A  is another top view of shielding patterns, in accordance with some embodiments; 
         FIG.  10 B  is a schematic diagram of a mask, in accordance with some embodiments; 
         FIG.  11 A  is yet another top view of shielding patterns, in accordance with some embodiments; 
         FIG.  11 B  is a sectional view of the cathodes in the light-transmissive area in  FIG.  9    taken along the section line F-F; 
         FIG.  11 C  is a sectional view of the cathodes in the light-transmissive area in  FIG.  9    taken along the section line G-G; 
         FIG.  11 D  is another sectional view of the cathodes in the light-transmissive area in  FIG.  9    taken along the section line G-G; 
         FIG.  12    is a graph showing transmittances of a cathode film to light with different wavelengths, in accordance with some embodiments; 
         FIG.  13    is a graph showing transmittances of silver layers with different thicknesses to light with different wavelengths, in accordance with some embodiments; 
       FIG,  14  is an electron micrograph of borders of an anode and a cathode, in accordance with some embodiments; 
         FIG.  15    is a flowchart of a method for manufacturing a display panel, in accordance with some embodiments; 
         FIG.  16    is another flowchart of a method for manufacturing a display panel, in accordance with some embodiments; 
         FIG.  17    is yet another flowchart of a method for manufacturing a display panel, in accordance with some embodiments; 
         FIG.  18    is a schematic diagram showing steps of manufacturing a display panel, in accordance with some embodiments; 
       FIG,  19  is another schematic diagram showing steps of manufacturing a display panel, in accordance with some embodiments; and 
         FIG.  20    is yet another schematic diagram showing steps of manufacturing a display panel, in accordance with some embodiments. 
     
    
    
     DETAILED DESCRIPTION 
     Technical solutions in some embodiments of the present disclosure will be described clearly and completely below with reference to the accompanying drawings. However, the described embodiments are merely some but not all embodiments of the present disclosure. All other embodiments obtained by a person of ordinary skill in the art based on some embodiments of the present disclosure shall be included in the protection scope of the present disclosure. 
     Unless the context requires otherwise, throughout the description and the claims, the term “comprise” and other forms thereof such as the third-person singular form “comprises” and the present participle form “comprising” are construed as an open and inclusive meaning, i.e., “including, but not limited to”, In the description of the specification, the terms such as “some embodiments”, “example”, “some examples” are intended to indicate that specific features, structures, materials or characteristics related to the embodiment(s) or example(s) are included in at least one embodiment or example of the present disclosure. Schematic representations of the above terms do not necessarily refer to the same embodiment(s) or example(s). In addition, the specific features, structures, materials or characteristics may be included in any one or more embodiments or examples in any suitable manner. 
     Hereinafter, the terms such as “first” and “second” are used for descriptive purposes only, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined by “first” and “second” may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, the term “a plurality of/the plurality of/multiple” means two or more unless otherwise specified. 
     In the description of some embodiments, the terms “connected” and “electrically connected” and their derivatives may be used. For example, the term “connected” may be used in the description of some embodiments to indicate that two or more components are in direct or indirect physical contact with each other. For another example, the term “electrically connected” may be used in the description of some embodiments to indicate that two or more components are in direct or indirect electrical contact. 
     As used herein, the term such as “about”, “substantially” or “approximately” includes a stated value and an average value within an acceptable range of deviation of a particular value. The acceptable range of deviation is determined by a person of ordinary skill in the art in view of the measurement in question and errors associated with the measurement of a particular quantity (i.e., limitations of the measurement system). 
     Exemplary embodiments are described herein with reference to sectional views and/or plan views as idealized exemplary drawings. In the accompanying drawings, thicknesses of layers and areas are enlarged for clarity. Therefore, variations in shape with respect to the drawings due to, for example, manufacturing technologies and/or tolerances may be envisaged. Therefore, the exemplary embodiments should not be construed as being limited to the shapes of the areas shown herein, but as including shape deviations due to, for example, manufacturing. For example, an etched area that is shown in a rectangle generally has a curved feature. Therefore, the areas shown in the accompanying drawings are schematic in nature, and their shapes are not intended to show actual shapes of the areas in a device, and are not intended to limit the scope of the exemplary embodiments. 
     In this text, the expression “an orthogonal projection of A on a substrate covers an orthogonal projection of B on the substrate” is used, which means that a border of the orthogonal projection of A on the substrate coincides with a border of the orthogonal projection of B on the substrate; or the border of the orthogonal projection of A on the substrate does not coincide at least partially with the border of the orthogonal projection of B on the substrate, and the orthogonal projection of B on the substrate is located within the orthogonal projection of A on the substrate. 
     In this text, the expression “in a same layer” is used, which means that a mask is used to form a film layer with a specific pattern through a single patterning process. Depending on the specific patterns, the single patterning process may include several exposure, development or etching processes, and the specific patterns in the formed layer structure may be continuous or discontinuous, and these specific patterns may also be at different heights or have different thicknesses. 
     As shown in  FIG.  1   , some embodiments of the present disclosure provide a display apparatus  100 , which may be any product or component having a display function, such as a television, a display, a notebook computer, a tablet computer, a mobile phone or a navigator. 
     The display apparatus  100  adopts a technology in which functional device(s) are provided on a back side of a screen. The functional device is, for example, a device that can realize a specific function, such as a front camera assembly, an under-screen fingerprint assembly, a 3D face recognition assembly, an iris recognition assembly or a proximity sensor. For example, a front camera assembly is provided on the back side of the screen. That is, the display apparatus  100  adopts an under-screen camera technology. 
     Referring to  FIG.  1   , the display apparatus  100  includes a display panel  110 . The display panel  110  has a display area  10 . The display area  10  includes a light-transmissive area  101  and a main display area  102  located at a periphery of the light-transmissive area  101 . 
     A plurality of sub-pixels are provided in the main display area  102 , and mainly function to display images. 
     A plurality of sub-pixels are also provided in the light-transmissive area  101 , so that the light-transmissive area  101  may participate in image display. In addition, the light-transmissive area  101  may transmit light. A position of the light-transmissive area  101  in the display area  10  is not unique. For example, the light-transmissive area  101  may be disposed at an upper middle of the display area  10  (referring to  FIG.  1   ), at an upper left or right of the display area  10 , at a lower middle of the display area  10 , or the like. 
     Referring to  FIG.  2   , a functional device  120  is provided on a back side of the light-transmissive area  101  of the display panel  110 . For example, a front camera assembly is provided on the back side of the light-transmissive area  101 . When the display panel  110  displays an image, the light-transmissive area  101  and the main display area  102  may display the image together. When the front camera assembly shoots an image, external light may pass through the light-transmissive area  101  and reach the front camera assembly. 
     In some embodiments, the display panel  110  may further have a peripheral area  20 , and the peripheral area  20  may surround the display area  10  (referring to  FIG.  1   ), or may only be located on one or more sides of the display area  10 . Sub-pixels may also be provided in the peripheral area  20 , so that the peripheral area also has a display function. As a result, a screen-to-body ratio of the display panel  110  approaches or reaches 100%. 
     In some embodiments, the display panel  110  may be an organic light-emitting diode (OLEO) display panel. Referring to  FIG.  3   ,  FIG.  3    is a sectional view of a sub-pixel in the main display area  102  in  FIG.  1   . The display panel  110  includes a substrate  11 , sub-pixels  30  disposed on the substrate  11 , and an encapsulation layer  40  for encapsulating the sub-pixels  30 . Referring to  FIG.  3   , each sub-pixel  30  of the display panel  110  includes a pixel circuit  301  and a light-emitting device  302  that are disposed on the substrate  11 . 
     In some embodiments, referring to  FIG.  3   , the pixel circuit  301  includes a plurality of thin film transistors TFT and at least one storage capacitor Cst. The thin film transistor TFT includes an active layer  12 , a gate  13 , a source  14  and a drain  15  that are disposed on the substrate  11 . The storage capacitor Cst includes a first electrode  16  and a second electrode  17  that are arranged opposite to each other. 
     A film layer in which active layers  12  are located is a semiconductor layer  210 . Gates  13  and first electrodes  16  are made of a same material and are disposed in a same layer, and the film layer in which the gates  13  and the first electrodes  16  are located is referred to as a first gate metal layer  221 ; and a film layer in which second electrodes  17  are located may be referred to as a second gate metal layer  222 . That is, the display panel  110  may include two gate metal layers  220 . A film layer in which sources  14  and drains  15  are located is referred to as a first source-drain metal layer  231 . 
     A gate insulating layer  18  is provided between the semiconductor layer  210  and the first gate metal layer  221 . A first interlayer insulating layer  19  is provided between the first gate metal layer  221  and the second gate metal layer  222 , A second interlayer insulating layer  21  is provided between the second gate metal layer  222  and the first source-drain metal layer  231 . 
     In addition, a passivation layer  22  and a planarization layer  23  are provided on a side of the first source-drain metal layer  231  away from the substrate  11 . 
     One of the source  14  and the drain  15  of the thin film transistor TFT is electrically connected to the light-emitting device  302  to transmit a voltage signal to the light-emitting device  302  to drive the light-emitting device  302  to emit light. The source  14  or drain  15  of the thin film transistor TFT may be directly or indirectly electrically connected to the light-emitting device  302 . For example, as shown in  FIG.  3   , the display panel  110  further includes another source-drain metal layer disposed on a side of the planarization layer  23  away from the substrate  11 , which may be referred to as a second source-drain metal layer  232 . Connection electrodes  24  are provided in the second source-drain metal layer  232 . The drain  15  of the thin film transistor TFT is electrically connected to the light-emitting device  302  through a connection electrode  24 . In this case, the display panel  110  includes two source-drain metal layers  230 . 
     Referring to  FIG.  3   , the light-emitting device  302  is located on a side of film layers, in which the pixel circuit  301  is located, away from the substrate  11 . The light-emitting device  302  includes an anode  25 , a light-emitting layer  26  and a portion of a cathode film  27 . In a case where the display panel  110  includes two source-drain metal layers  230 , at least one insulating layer  28  is provided between the anode  25  and the second source-drain metal layer  232 , and the anode  25  is electrically connected to the connection electrode  24  through a via hole provided in the at least one insulating layer  28 . 
     Referring to  FIG.  3   , the display panel further includes a pixel defining layer  29  including a plurality of opening areas. One light-emitting device  302  corresponds to one opening area, and a light emitting layer  26  of the light-emitting device  302  is at least partially disposed in the opening area. 
     In some embodiments, the light-emitting device  302  further includes one or more of an electron transporting layer (ETL), an electron injection layer (EIL), a hole transporting layer (HTL) and a hole injection layer (HIL). 
     The display panel  110  may be a top-emission display panel. In this case, the anode  25  closer to the substrate  11  is opaque, and the cathode film  27  farther away from the substrate  11  is transparent or semi-transparent. The display panel  110  may also be a bottom-emission display panel. In this case, the anode  25  closer to the substrate  11  is transparent or semi-transparent, and the cathode film  27  farther away from the substrate  11  is opaque. The display panel  110  may also be a double-sided emission display panel. In this case, both the anode  25  closer to the substrate  11  and the cathode film  27  farther away from the substrate  11  are transparent or semi-transparent. 
     In order to improve the sensitivity of the functional device  120  disposed on the back side of the light-transmissive area  101  of the display panel  110 , it is necessary to ensure that the functional device  120  may receive a sufficient amount of light, and therefore it is necessary to increase a light transmittance of the light-transmissive area  101 . 
     In some embodiments, a resolution of the light-transmissive area  101  is reduced, that is, a distribution density of the sub-pixels  30  in the light-transmissive area  101  is reduced, which may increase the light transmittance of the light-transmissive area  101 . 
     In some other embodiments, as for the OLED display panel, the cathode film  27  is generally a whole layer. Although the cathode film  27  can transmit visible light, a transmittance of the cathode film  27  to visible light is relatively low. Thus, a portion of the cathode film  27  located in the light-transmissive area  101  of the display panel  110  may be patterned to increase the light transmittance of the light-transmissive area  101 . 
     The portion of the cathode film in the light-transmissive area is usually patterned by using a mask in conjunction with a vapor deposition process. However, the accuracy of patterning the cathode film is relatively low due to influences of positioning errors, measurement errors and process accuracy. 
     In some embodiments of the present disclosure, a display panel  110  is provided. Referring to  FIG.  6 C , the display panel  110  includes the substrate  11 , a plurality of shielding patterns  31  and light-emitting devices  302 . The plurality of shielding patterns  31  are disposed on the substrate  11  and located in the light-transmissive area  101 . 
     Referring to  FIG.  6 B , orthogonal projections of the plurality of shielding patterns  31  on the substrate  11  are separated from each other. 
     Referring to  FIGS.  6 A and  60   , multiple light-emitting devices  302  are provided in the light-transmissive area  101  and on the substrate  11 . Each light-emitting device  302  includes a light-emitting layer  26  and a cathode  32  located on a side of the light-emitting layer  26  away from the substrate  11 . Each light-emitting device  302  has an active light-emitting area  261 , and an orthogonal projection of the active light-emitting area  261  on the substrate  11  is located within an orthogonal projection of a cathode  32  of the light-emitting device  302  on the substrate  11 . 
     Referring to  FIG.  6 A , orthogonal projections of cathodes  32  of the multiple light-emitting devices  302  on the substrate  11  are separated from each other. Referring to  FIG.  6 C , the cathodes  32  of the multiple light-emitting devices  302  are located at a side of the plurality of shielding patterns  31  away from the substrate  11 . A cathode  32  corresponds to a shielding pattern  31 . An orthogonal projection of each shielding pattern  31  on the substrate  11  covers an orthogonal projection of a respective cathode  32  on the substrate  11 . 
     Referring to  FIGS.  6 A to  6 C and  19   , in a process of manufacturing the display panel  110 , the shielding patterns  31  separated from each other are first fabricated on the substrate  11 ; then the light-emitting layers  26  and the cathode film  27  are fabricated on a side of the shielding patterns  31  away from the substrate  11 : and finally an area of the substrate  11  corresponding to the light-transmissive area  101  of the display panel  110  is irradiated from a side of the substrate  11  away from the cathode film  27  by using a laser beam to remove a portion that is not shielded by the shielding patterns  31  in a portion of the cathode film  27  located in the light-transmissive area  101 , so as to form cathodes  32  separated from each other. 
     Compared with patterning the cathode film by means of the mask in conjunction with vapor deposition, in the display panel  110  of the embodiments of the present disclosure, the laser beam irradiates the substrate  11  from the side of the substrate  11  away from the cathode film  27 , and in this process, part of the laser beam is shielded by the shielding patterns  31 ; and another part of the laser beam not shielded by the shielding patterns  31  reaches the cathode film  27  to remove a portion of the cathode film  27  irradiated by the laser beam and retain portions of the cathode film  27  not irradiated by the laser beam, so as to form independent cathodes  32 . Based on a principle of light propagation along a straight line, a shape of the orthogonal projection of the cathode  32  on the substrate  11  is substantially the same as a shape of the orthogonal projection of the shielding pattern  31  on the substrate  11 , and the orthogonal projection of the shielding pattern  31  on the substrate  11  covers the orthogonal projection of the cathode  32  on the substrate  11 . 
     The shielding patterns  31  may be formed through a patterning process such as vapor deposition and etching, and a fabricating accuracy of its patterning is relatively high. Patterns of the cathodes  32  may be controlled by controlling positions, shapes and sizes of the shielding patterns  31 , so that the accuracy of patterning the cathode film  27  may be improved, and unnecessary cathode materials may be removed as much as possible to improve an aperture ratio of the cathode film  27 , thereby improving a transmittance of a film layer in which the cathodes  32  are located to visible light. 
     In some embodiments, a transmittance of the cathode  32  to visible light is greater than a transmittance of the cathode  32  to infrared light. The cathode  32  is located on the side of the light-emitting layer  26  away from the substrate  11 , and light emitted by the light-emitting layer  26  needs to pass through the cathode  32  to exit therefrom. A laser beam in an infrared wavelength range may be used to irradiate the area of the substrate  11  corresponding to the light-transmissive area  101  of the display panel  110 , so as to improve the efficiency of patterning the cathode film  27 . The transmittance of the cathode  32  to visible light is greater than the transmittance of the cathode  32  to infrared light, and thus the cathode  32  may transmit at least part of the visible light for displaying an image, and may absorb at least part of the infrared light, so that a portion of the cathode film  27  irradiated by the laser beam in the infrared wavelength range may be removed. 
     In some embodiments, the transmittance of the shielding pattern  31  to infrared light is less than or equal to 2%, such as 2%, 1.5%, 1%, 0.5% or 0%. In this way, when the laser beam in the infrared wavelength range is used to irradiate the area of the substrate  11  corresponding to the light-transmissive area  101  of the display panel  110 , the shielding pattern  31  may absorb most or all of the infrared light, thereby reducing a laser beam in the infrared wavelength range passing through the shielding pattern  31 , and preventing the infrared light from directly reaching portions of the cathode film  27  shielded by the shielding patterns  31 . 
     In some embodiments, a material of the cathode film  27  includes a magnesium-silver alloy. First of all, the magnesium-silver alloy may transmit visible light, and when the display panel displays an image, the light may be emitted from the cathodes  32 ; moreover, the magnesium-silver alloy may absorb infrared light, and when the infrared light is irradiated onto the cathode film  27  made of the magnesium-silver alloy, the portion that is not shielded by the shielding patterns  31  may be removed, 
     Referring to  FIG.  12   ,  FIG.  12    shows a transmittance curve of the cathode film  27  to light with different wavelengths in a case where a thickness of the cathode film  27  is 13 nm. In some examples, infrared light with a wavelength of 900 nm may be used, and in this case, the transmittance of the cathode film  27  is approximately 29%. Infrared light with a wavelength of 940 nm may also be used, and in this case, the transmittance of the cathode film  27  is approximately 27.2%. Infrared light with a wavelength of 960 nm may also be used, and in this case, the transmittance of the cathode film  27  is approximately 26.1%. It will be understood that infrared light with other wavelengths may also be used, which will not be listed one by one herein. 
     In some embodiments, referring to  FIG.  6 C , each light-emitting device  302  further includes an anode  25 , which is located on a side of the light-emitting layer  26  proximate to the substrate  11 . An anode  25  forms a shielding pattern  31 . In a case where the anode  25  is made of an opaque metal, the anode  25  may absorb infrared light. The anode  25  may be set as the shielding pattern  31 . In this way, a film structure of the display panel  110  is simple, no new film layer needs to be added, and the manufacturing cost is low. 
     In a case where an anode  25  forms a shielding pattern  31 , for example, if a thickness of the anode  25  is 100 nm, a material of the anode  25  is opaque. Alternatively, in the case where the thickness of the anode  25  is 100 nm, a transmittance of the material of the anode  25  to infrared light is less than or equal to 2%. 
     For example, referring to  FIGS.  6 A and  6 B , based on the principle of light propagation along the straight line, the orthogonal projection of the cathode  32  on the substrate  11  and an orthogonal projection of a respective anode  25  on the substrate  11  are substantially the same in shape and size, and the orthogonal projection of the anode  25  on the substrate  11  covers the orthogonal projection of the respective cathode  32  on the substrate  11 . 
     Referring to  FIG.  6 C , as an illustration, an orthogonal projection of a border of the cathode  32  on the substrate  11  coincides with an orthogonal projection of a border of the anode  25  on the substrate  11 . However, in some embodiments, a diffraction phenomenon may be generated for the laser beam during irradiation of the laser beam to the anode  25 . Based on this, referring to  FIG.  14   ,  FIG.  14    is a microscopic electron micrograph of borders of the anode  25  and the cathode  32  in a case where the anode  25  is used as the shielding pattern  31 . A border of the orthogonal projection of the anode  25  on the substrate  11  is beyond a border of the orthogonal projection of the cathode  32  on the substrate  11  by a certain distance D 4 . That is, the border of the orthogonal projection of the cathode  32  on the substrate  11  is located inside the border of the orthogonal projection of the anode  25  on the substrate  11  That is, an area of the orthogonal projection of the anode  25  on the substrate  11  is larger than an area of the orthogonal projection of the respective cathode  32  on the substrate  11 . 
     In some embodiments, referring to  FIG.  8 A , each light-emitting device  302  includes an anode  25 , and the anode  25  is located on the side of the light-emitting layer  26  proximate to the substrate  11 . The shielding patterns  31  are located at a side of anodes  25  of the multiple light-emitting devices  302  proximate to the substrate  11 . A shielding pattern  31  corresponds to an anode  25 , and the orthogonal projection of the shielding pattern  31  on the substrate  11  is at least partially overlapped with an orthogonal projection of the anode  25  on the substrate  11 . 
     For example, the orthogonal projection of the shielding pattern  31  on the substrate  11  is partially overlapped with the orthogonal projection of the respective anode  25  on the substrate  11 . That is, the orthogonal projection of the shielding pattern  31  on the substrate  11  covers a portion of the orthogonal projection of the anode  25  on the substrate  11 . In this case, a shape of the cathode  32  is determined by the shielding pattern  31  and the anode  25  together, and the shielding pattern  31  may function to partially protect the anode  25 . 
     For another example, the orthogonal projection of the shielding pattern  31  on the substrate  11  is completely overlapped with the orthogonal projection of the respective anode  25  on the substrate  11 . That is, the orthogonal projection of the shielding pattern  31  on the substrate  11  completely covers the orthogonal projection of the anode  25  on the substrate  11 . In this case, the shape of the cathode  32  is determined by the shielding pattern  31 , and the shielding pattern  31  may completely protect the anode  25 . 
     In a case where the anode  25  is made of a transparent material or a semi-transparent material, and the material of the anode  25  can transmit infrared light, or in a case where there is a risk of damage to the anode  25  by the laser beam in the infrared wavelength range, if the shielding patterns  31  are disposed on a side of the anodes  25  proximate to the substrate  11 , and a shielding pattern  31  corresponds to an anode  25 , the shielding patterns  31  may protect the anodes  25 . 
     Infrared light has light energy, and after a film layer absorbs infrared light, a temperature of the film layer will increase. The anode  25  is a portion of the light-emitting device  302 , and an increase in temperature of the anode  25  may cause damage to the anode  25 . The shielding pattern  31  can reduce the risk of damage to the anode  25  due to the increase in temperature of the anode  25 , thereby improving the safety of a manufacturing process of the display panel  110  and yield of the display panel  110 . 
     In some embodiments, referring to  FIG.  3   , the display panel  110  further includes the semiconductor layer  210 , the gate metal layer  220  and the source-drain metal layer  230 . The semiconductor layer  210  is located between the substrate  11  and the plurality of anodes  25 . The gate metal layer  220  is located between the substrate  11  and the plurality of anodes  25 . The source-drain metal layer  230  is farther away from the substrate  11  than the semiconductor layer  210  and the gate metal layer  220 , and is located on the side of the plurality of anodes  25  proximate to the substrate  11 . The shielding patterns  31  are located in the semiconductor layer  210  or the gate metal layer  220  or the source-drain metal layer  230 . 
     It will be noted that the gate metal layer  220  may be located on a side of the semiconductor layer  210  away from or proximate to the substrate  11 . In a case where the gate metal layer  220  is located on the side of the semiconductor layer  210  away from the substrate  11 , the gate  13  of the thin film transistor of the pixel circuit is located on a side of the active layer  12  away from the substrate  11 . In this case, the thin film transistor has a top-gate structure. In a case where the gate metal layer  220  is located on the side of the semiconductor layer  210  proximate to the substrate  11 , the gate  13  of the thin film transistor of the pixel circuit is located on a side of the active layer  12  proximate to the substrate  11 . In this case, the thin film transistor has a bottom-gate structure. 
     In the above embodiments, by providing the shielding patterns  31  in the semiconductor layer  210  or the gate metal layer  220  or the source-drain metal layer  230 , it is possible to eliminate the need to add an additional layer to the display panel  110 , thereby not affecting a thickness of the display panel  110  and eliminating the need to add an additional process step. 
     In a case where the display panel  110  includes two gate metal layers  220 , the shielding patterns  31  may be disposed in either of the two gate metal layers  220 . In a case where the display panel  110  includes two source-drain metal layers  230 , the shielding patterns  31  may be disposed in either of the two source-drain metal layers  230 . 
     For example, referring to  FIG.  8 A , the shielding patterns  31  are located in the first source-drain metal layer  231  in which the source  14  and the drain  15  of the thin film transistor are located. For example, referring to  FIG.  8 B , the shielding patterns  31  are located in the first gate metal layer  221  in which the gate  13  of the thin film transistor is located. For example, referring to  FIG.  8 C , the shielding patterns  31  are located in the semiconductor layer  210 . 
     In addition, as shown in  FIGS.  8 A to  80   , all shielding patterns  31  in the plurality of shielding patterns  31  may be disposed in a same film layer in the semiconductor layer  210 , the gate metal layers  220  and the source-drain metal layers  230 . The plurality of shielding patterns  31  may also be disposed in at least two film layers of the semiconductor layer  210 , the gate metal layers  220  and the source-drain metal layers  230 . Two or more layers of shielding patterns  31  may also be provided below a same light-emitting device  302 , so as to achieve a better protection effect on the anode  25  of the light-emitting device  302  by using the plurality of layers of shielding patterns  31 , For example, referring to  FIG.  8 D , two layers of shielding patterns  31  are provided at a side of each anode  25  proximate to the substrate  11 . One of the two layers of shielding patterns  31  is located in the semiconductor layer  210 , and the other layer is located in the first gate metal layer  221 . 
     In a case where the shielding patterns  31  are located in the semiconductor layer  210  or the gate metal layer  220  or the source-drain metal layer  230 , a material of the shielding patterns  31  may be the same as a metal material of a film layer in which the shielding patterns  31  are located. For example, in the case where the shielding patterns  31  are located in the source-drain metal layer  230 , the material of the shielding patterns  31  may be the same as a material of the source-drain metal layer  230 . In this case, it is possible to form the plurality of shielding patterns  31  in a process of manufacturing the patterned source-drain metal layer  230 , which eliminates the need to add an additional process, simplifies the manufacturing process of the display panel and reduces the production cost of the display panel. 
     In some embodiments, a transmittance of the shielding pattern  31  to visible light is greater than a transmittance of the shielding pattern  31  to infrared light, and thus the shielding pattern  31  may be used to shield infrared laser beam to prevent the anode  25  from being damaged due to irradiation of the infrared laser beam. For example, the transmittance of the shielding pattern  31  to infrared light is less than or equal to 2%, such as 2%, 1.5%, 1%, 0.5% or 0%, so as to shield most or all of the infrared laser beam. 
     In some embodiments, a thickness of the shielding pattern  31  is greater than a thickness of the cathode  32 . Both the shielding pattern  31  and the cathode  32  have a higher transmittance to visible light than to infrared light. Therefore, if the shielding pattern  31  and the cathode  32  are made of same or similar materials and the thickness of the shielding pattern  31  is greater than the thickness of the cathode  32 , it is possible to ensure that, when the laser beam in the infrared wavelength range is used to irradiate the area of the substrate  11  corresponding to the light-transmissive area  101  of the display panel  110 , the shielding pattern  31  will not melt into a liquid state or evaporate into a gas state under irradiation of infrared light on a premise of ensuring that a portion of the cathode film  27  irradiated by the infrared light may be removed. 
     As mentioned in the foregoing, during a process in which laser beam is irradiated to the shielding pattern  31 , the laser beam is diffracted, which will cause that a border of the orthographic projection of the shielding pattern  31  on the substrate  11  is beyond the border of the orthographic projection of the cathode  32  on the substrate  11 . 
     Based on this, in some embodiments, the material of the shielding pattern  31  includes silver, which is capable of absorbing infrared light and transmitting visible light. In a process of patterning the portion of the cathode film in the light-transmissive area by using the laser beam in the infrared wavelength range, the shielding pattern  31  may absorb infrared light, so as to shield the infrared light irradiated to the anode  25 . During the use of the display panel  110 , visible light enters the light-transmissive area  101  from the light-exit side of the display panel  110 , and the visible light irradiated to the portion of the shielding pattern  31  beyond the border of the cathode  32  may pass through the shielding pattern  31 , thereby reducing the influence of the portion of the shielding pattern  31  beyond the border of the cathode  32  on the shielding of the visible light. It will be noted that the material of the shielding pattern  31  is not limited to silver, and the material of the shielding pattern  31  may also be another material, a transmittance of which to visible light is greater than a transmittance thereof to infrared light. In addition, in a case where the material of the shielding pattern  31  includes silver, a material of the cathode  32  may include a magnesium-silver alloy. 
     In the case where the material of the shielding pattern  31  includes silver, the transmittance of the shielding pattern  31  to infrared light may be controlled by controlling the thickness of the shielding pattern  31 . Referring to  FIG.  13   ,  FIG.  13    is a schematic diagram showing transmittances of silver layers with different thicknesses to light with different wavelengths. For example, if infrared light with a wavelength of 920 nm is used, a transmittance of a silver layer with a thickness of 20 nm is approximately 7.992%; a transmittance of a silver layer with a thickness of 25 nm is approximately 4.169%; and a transmittance of a silver layer with a thickness of 30 nm is approximately 2.773%. Therefore, in a case where infrared light with the wavelength of 920 nm is used as a laser source, silver with a thickness of 30 nm or greater than 30 nm, such as 35 nm, 38 nm or 45 nm, may be used as the shielding pattern  31 . 
     Since voltages required by the cathodes  32  of the light-emitting devices  302  of the sub-pixels  30  are the same, the cathodes  32  separated from each other in the light-transmissive area  101  need to be connected to each other. There are many manners to connect the cathodes  32  separated from each other. For example, a transparent conductive layer may be provided, and the cathodes  32  separated from each other are electrically connected to the transparent conductive layer. For another example, a cathode connection structure may be provided among the cathodes  32  separated from each other to electrically connect the cathodes  32  separated from each other. 
     As for the manner in which the cathodes  32  separated from each other are connected by providing the transparent conductive layer, in some embodiments, referring to  FIG.  7 A , the cathode  32  includes a cathode body portion  321  and a cathode connection portion  322 . Referring to FIG,  8 A, the orthogonal projection of the anode  25  on the substrate  11  covers an orthogonal projection of the cathode body portion  321  on the substrate  11 . The cathode connection portion  322  is electrically connected to the cathode body portion  321  (referring to  FIG.  7 A ), and an orthogonal projection of the cathode connection portion  322  on the substrate  11  is not overlapped with the orthogonal projection of the anode  25  on the substrate  11  (referring to  FIG.  8 A ). 
     Referring to  FIG.  8 A , the display panel  110  further includes a transparent conductive layer  33  and a first insulating layer  281 . The transparent conductive layer  33  is located between a film layer where the shielding patterns  31  are located and the plurality of anodes  25 , and the first insulating layer  281  is located between the transparent conductive layer  33  and the plurality of cathodes  32 . A plurality of first via holes  34  are provided in the first insulating layer  281 . A gap exists between an orthogonal projection of each first via hole  34  on the substrate  11  and an orthogonal projection of an adjacent anode  25  on the substrate  11 , The orthogonal projection of the first via hole  34  on the substrate  11  is located within the orthogonal projection of the cathode connection portion  322  on the substrate  11 , and each cathode  32  is electrically connected to the transparent conductive layer  33  through at least one first via hole  34 . For example, referring to  FIG.  8 A , each cathode  32  may be electrically connected to the transparent conductive layer  33  through a first via hole  34 , For example, the transparent conductive layer  33  may be made of indium tin oxide (ITO). 
     In this way, by providing the cathode connection portion  322  protruding relative to the border of the anode  25  in the cathode  32 , and providing the first via holes  34  in the first insulating layer  281  between the cathode  32  and the transparent conductive layer  33 , the cathode connection portion  322  is electrically connected to the transparent conductive layer  33  through the first via hole  34 . In addition, since a gap exists between the orthogonal projection of the first via hole  34  on the substrate  11  and the orthogonal projection of the anode  25  on the substrate  11 , an avoidance interval exists between the first via hole  34  and the anode  25 , and the cathode  32  can thus be electrically insulated from the anode  25  to prevent a short circuit between the cathode  32  and the anode  25 . 
     Referring to  FIG.  7 C , in order to form the cathode  32  including the cathode body portion  321  and the cathode connection portion  322 , the shielding pattern  31  includes a shielding pattern body portion  311  and a shielding pattern connection portion  312  corresponding to the cathode  32 . Referring to  FIG.  8 A , an orthogonal projection of the shielding pattern body portion  311  on the substrate  11  covers the orthogonal projection of the cathode body portion  231  on the substrate  11 . The shielding pattern connection portion  312  is connected to the shielding pattern body portion  311  (referring to  FIG.  7 C ), and an orthogonal projection of the shielding pattern connection portion  312  on the substrate  11  covers the orthogonal projection of the cathode connection portion  321  on the substrate  11  (referring to  FIG.  8 A ), so as to form the cathode  32  having the above structure. Based on the principle of light propagation along the straight line, the orthogonal projection of the cathode  32  on the substrate  11  and the orthogonal projection of the respective shielding pattern  31  on the substrate  11  are substantially the same in shape and size. 
     In the above embodiments, the plurality of cathodes  32  separated from each other in the light-transmissive area  101  are electrically connected through the transparent conductive layer  33 . The transparent conductive layer  33  may be directly electrically connected to a signal line for transmitting a voltage signal of cathode, which is disposed around the display area  10 . The transparent conductive layer  33  may also be electrically connected to a portion of the cathode film  27  in the main display area  102 . In this way, the transparent conductive layer  33  obtains the voltage signal of cathode and transmits the voltage signal of cathode to each cathode  32 . 
     It will be noted that, as shown in  FIG.  8 A , in addition to the first insulating layer  281 , the pixel defining layer  29  is also provided between the transparent conductive layer  33  and the plurality of cathodes  32 . Therefore, the first via hole  34  not only needs to extend through the first insulating layer  281 , but also needs to extend through the pixel defining layer  29 , so that the cathode  32  may be electrically connected to the transparent conductive layer  33  through the first via hole  34 . 
     As for the manner in which the plurality of cathodes separated from each other are connected by providing the cathode connection structure, in some embodiments, referring to  FIG.  9   , the display panel  110  further includes at least one cathode connection structure  35 , and the at least one cathode connection structure  35  and the cathodes  32  are made of a same material and disposed in a same layer. A dimension of the cathode connection structure  35  in a first direction L 1  is greater than a dimension thereof in a second direction L 2 . Each cathode connection structure  35  is electrically connected to two cathodes  32  adjacent thereto. The first direction is a row direction in which a plurality of sub-pixels  30  of the display panel  110  are arranged, i.e., the direction shown by line L 1  in  FIG.  9   . The second direction is a column direction in which the plurality of sub-pixels  30  of the display panel  110  are arranged, i.e., the direction shown by line L 2  in  FIG.  9   . 
     In the above embodiments, the plurality of cathodes  32  separated from each other are electrically connected by the cathode connection structure(s)  35 . The dimension of the cathode connection structure  35  in the first direction Li is greater than the dimension thereof in the second direction L 2 , and the cathode connection structure  35  is connected to two cathodes  32  adjacent thereto in the first direction L 1 . For example, the cathode connection structure  35  may be directly electrically connected to the signal line for transmitting the voltage signal of cathode, which is disposed around the display area  10 . The cathode connection structure  35  may also be electrically connected to the portion of the cathode film  27  in the main display area  102 . In this way, the cathode connection structure  35  obtains the voltage signal of cathode and transmits the voltage signal of cathode to each cathode  32 . 
     The cathode connection structure  35  and the cathode  32  are made of a same material and disposed in a same layer, so that the cathode connection structure  35  may be manufactured together with the cathode  32 . For example, when the cathode film  27  is irradiated by infrared light to perform a pattern processing on an area of the cathode film  27  corresponding to the light-transmissive area  101  of the display panel  100 , the cathode  32  and the cathode connection structure  35  are formed simultaneously. 
     For example, referring to  FIG.  9   , the display panel  110  includes a plurality of cathode connection structures  35  arranged in a plurality of rows. Each row includes multiple cathode connection structures  35  arranged in the first direction L 1 . Each row of cathode connection structures  35  and portions of cathodes  32  connected to the cathode connection structures  35  in the row constitute a cathode connection strip  50 . In the second direction, the cathode connection strip  50  has substantially a same dimension as the cathode connection structure  35 . 
     For example, the multiple cathode connection structures  35  in each row are substantially located in a straight line. 
     For another example, multiple cathodes  32  are provided on at least one of opposite sides of the cathode connection strip  50  in the second direction L 2 , and the multiple cathodes  32  are each connected to the cathode connection strip  50 . 
     For another example, in multiple cathodes  32  in a same row, any two adjacent cathodes  32  are electrically connected to each other by one cathode connection structure  35 ; and at least part of the multiple cathodes  32  in the same row are located in a same straight line, and the multiple cathode connection structures  35  in the same row are located in the same straight line. 
     By adopting the above arrangement, it is advantageous to reduce a total length of the plurality of cathode connection structures  35 , thereby reducing an area of the projection of the plurality of cathode connection structures  35  on the substrate  11 , and reducing the impact of the cathode connection structures  35  on the light transmittance of the film layer in which the plurality of cathodes  32  are located. 
     There are many manners to form the cathode connection structure(s)  35 . For example, the cathode connection structure(s) may be formed by providing shielding connection structure(s)  36  each having a same shape as a respective cathode connection structure  35  in the display panel  110 . For another example, the cathode connection structure(s)  35  may be formed by using a mask  200  which is provided on a side of the substrate  11  away from the cathode film  27 . 
     As for the manner of forming the cathode connection structure(s)  35  by using the shielding connection structure(s)  36  each having the same shape as the respective cathode connection structure  35 , in some embodiments, referring to  FIG.  11 A , the display panel  110  further includes at least one shielding connection structure  36 , and the at least one shielding connection structure  36  and the shielding patterns  31  are made of a same material and disposed in a same layer. Referring to  FIG.  11 D , a shielding connection structure  36  corresponds to a cathode connection structure  35 , and an orthogonal projection of the shielding connection structure  36  on the substrate  11  covers an orthogonal projection of the respective cathode connection structure  35  on the substrate  11 . Referring to  FIG.  11 B , a shielding pattern  31  corresponds to a cathode  32 , and the orthogonal projection of the shielding pattern  31  on the substrate  11  covers the orthogonal projection of the cathode  32  on the substrate  11 . The shielding connection structure  36  and the shielding pattern  31  are made of a same material and disposed in a same layer, so that the shielding connection structure  36  may be fabricated while the patterned shielding pattern  31  is fabricated, which is not required to add additional processes and film layers, and is beneficial to reducing the manufacturing cost of the display panel. 
     For example, the shielding connection structure(s)  36  and the shielding patterns  31  may all be located in the semiconductor layer  210  or in the gate metal layer  220  or in the source-drain metal layer  230 . In a case where there exist two gate metal layers  220 , the shielding connection structure(s)  36  and the shielding patterns  31  may be located in either of the two gate metal layers  220 . In a case where there exist two source-drain metal layers  230 , the shielding connection structure(s)  36  and the shielding patterns  31  may be located in either of the two source-drain metal layers  230 . 
     In some embodiments, the shielding connection structure(s)  36  and the shielding patterns  31  may also be disposed in different film layers. For example, the at least one shielding connection structure  36  may be disposed between the film layer in which the shielding patterns  31  are located and the anodes  25 , or the at least one shielding connection structure  36  may be disposed between the substrate  11  and the film layer in which the shielding patterns  31  are located. For example, in a case where the anodes  23  are used as the shielding patterns  31  in the display panel  110 , the at least one shielding connection structure  36  may be disposed between the substrate  11  and the anodes  25 . 
     In a case where the display panel  110  includes a plurality of cathode connection strips  50 , the display panel  110  includes a plurality of shielding connection structures  36  arranged in a plurality of rows, and each row includes multiple shielding connection structures  36  arranged in the first direction L 1 . Referring to  FIG.  11 A , each row of shielding connection structures  36  and portions of shielding patterns  31  connected to the shielding connection structures  36  in the row constitute a shielding connection strip  60 . Referring to  FIG.  11 D , an orthogonal projection of a shielding connection strip  60  on the substrate  11  covers an orthogonal projection of a respective cathode connection strip  50  on the substrate  11 . 
     As for the manner of forming the cathode connection structure(s)  35  by using the mask  200 , referring to  FIGS.  9  and  10 A , a shape of the shielding pattern  31  is substantially the same as the shape of the cathode  32 . Referring to  FIG.  10 B , the mask  200  includes at least one light-shielding line  210 . An orthogonal projection of each light-shielding line  210  on the substrate  11  is connected to orthogonal projections of at least two anodes  25  on the substrate  11 . An orthogonal projection of each light-shielding line  210  on the substrate  11  covers an orthogonal projection of a respective cathode connection strip  50  on the substrate  11 . 
     In some embodiments, referring to  FIG.  7 B , the anode  25  includes a first anode portion  251  and a second anode portion  252 . A shape of the first anode portion  251  is substantially the same as a shape of an active light-emitting area  261  of a light-emitting device  302  where the first anode portion  251  is located, and a border of the first anode portion  251  is partially overlapped with the border of the anode  25 . The second anode portion  252  is electrically connected to the first anode portion  251 . An end of the second anode portion  252  is electrically connected to the first anode portion  251 , and another end thereof is used for being electrically connected to the thin film transistor. 
     In some embodiments, referring to  FIG.  7 A , the cathode  32  includes a first cathode portion  323  and a second cathode portion  324 , and the second cathode portion  324  is electrically connected to the first cathode portion  323 . Referring to  FIG.  8 A , an orthogonal projection of the first cathode portion  323  on the substrate  11  is covered by an orthogonal projection of the first anode portion  251  on the substrate  11 , and an orthogonal projection of the second cathode portion  324  on the substrate  11  is covered by an orthogonal projection of the second anode portion  252  on the substrate  11 . 
     Referring to FIG,  7 A, in a case where the cathode  32  includes the cathode body portion  321  and the cathode connection portion  322 , the first cathode portion  323  and the second cathode portion  324  constitute the cathode body portion  321 . Referring to  FIGS.  7 A and  7 B , a shape of the cathode body portion  321  is substantially the same as a shape of the anode  25 . 
     Referring to  FIGS.  9  and  7 B , in a case where the display panel  110  further includes at least one cathode connection structure  35 , the shape of the cathode  32  is substantially the same as the shape of the anode  25 . 
     In some embodiments, referring to  FIG.  4   , pixel circuits of the sub-pixels  30  in the light-transmissive area  101  are provided at a periphery of the light-transmissive area  101 , which may increase the light transmittance of the light-transmissive area  101 . 
     In order to distinguish pixel circuits  301  of the sub-pixels  30  in the light-transmissive area  101  and pixel circuits  301  of sub-pixels  30  in the main display area  102 , the pixel circuits of the sub-pixels  30  in the light-transmissive area  101  are referred to as first pixel circuits  3011  (referring to  FIG.  4   ), and the pixel circuits  301  of the sub-pixels  30  in the main display area  102  are referred to as second pixel circuits  3012  (referring to  FIG.  3   ). In the above embodiments, the first pixel circuits  3011  of the sub-pixels  30  in the light-transmissive area  101  are disposed at the periphery of the light-transmissive area  101 , and each light-emitting device  302  in the light-transmissive area  101  is electrically connected to a respective first pixel circuit  3011  by a respective connection wire  37  (referring to  371 ,  372  or  373  in  FIG.  4   ). 
     Since there are multiple sub-pixels  30  in the light-transmissive area  101 , a plurality of connection wires  37  are required. A film layer in which the connection wire  37  is located is referred as a connection wire layer  240  (referring to  FIG.  5   ). The plurality of connection wires  37  may be disposed in a same connection wire layer  240 , or in different connection wire layers  240 , so as to provide a sufficient wiring space for the plurality of connection wires  37 . 
     For example, the plurality of connection wires  37  include first connection wires  371 , second connection wires  372  and third connection wires  373  that are respectively located in three connection wire layers  240 , The first connection wire  371 , the second connection wire  372  and the third connection wire  373  are used for electrically connecting the light-emitting devices  302  in different areas of the light-transmissive area  101  to respective first pixel circuits  3011 . 
     Based on the above design, for example, referring to  FIG.  5   , a sectional structure of the light-transmissive area  10  of the display panel  110  and a peripheral area thereof is as follows, The display panel  110  includes a pixel circuit layer  70 , a second insulating layer  282 , the connection wire layer  240  and a third insulating layer  283  that are sequentially arranged in a direction perpendicular to the substrate  11  and pointing from the substrate  11  to the anodes  25 , and are disposed between the substrate  11  and a film layer where the plurality of anodes  25  are located. The pixel circuit layer  70  includes the semiconductor layer  210 , the gate insulating layer  18 , the first gate metal layer  221 , the first interlayer insulating layer  19 , the second gate metal layer  222 , the second interlayer insulating layer  21 , the first source-drain metal layer  231 , the passivation layer  22 , the planarization layer  23 , and the second source-drain metal layer  232 . 
     The pixel circuit layer  70  includes a plurality of first pixel circuits  3011  disposed at the periphery of the light-transmissive area  101 . A plurality of second via holes  38  are provided in the second insulating layer  282 , and a plurality of third via holes  39  are provided in the third insulating layer  283 . A first end of the connection wire  37  in the connection wire layer  240  is electrically connected to the first pixel circuit  3011  through at least one second via hole  38 , and a second end thereof is electrically connected to the second anode portion  252  of the anode  25  through at least one third via hole  39 . 
     In an example where the display panel  110  includes three connection wire layers  240 , referring to  FIGS.  4  and  5   , the three connection wire layers  240  are sequentially a first connection wire layer, a second connection wire layer and a third connection wire layer in the direction perpendicular to the substrate  11  and pointing from the substrate  11  to the anode. The first connection wire layer includes a plurality of first connection wires  371 , the second connection wire layer includes a plurality of second connection wires  372 , and the third connection wire layer includes a plurality of third connection wires  373 . A fourth insulating layer  284  is provided between the first connection wire layer and the second connection wire layer, and a fifth insulating layer  285  is provided between the second connection wire layer and the third connection wire layer. 
     With continued reference to  FIG.  5   , as for the second connection wire  372 , the second via hole  38  extends through the fourth insulating layer  284  in addition to the second insulating layer  282 , so that the second connection wire  372  is electrically connected to the first pixel circuit  3011  through the second via hole  38 ; the third via hole  39  extends through the fifth insulating layer  285  in addition to the third insulating layer  283 , so that the second connection wire  372  is electrically connected to the anode  25  through the third via hole  39 . 
     For example, referring to  FIG.  8 A , in a case where the display panel  110  further includes the transparent conductive layer  33 , the transparent conductive layer  33  is located at a side of the third insulating layer  283  away from the substrate  11 . In a case where the display panel  110  includes three connection wire layers  240 , the transparent conductive layer  33  is located on a side of the fifth insulating layer  285  away from the substrate  11 , This facilitates electrical connection of the cathodes  32  to the transparent conductive layer  33 . The transparent conductive layer  33  may also be disposed at any position below the anode  25 , and the position is not limited thereto in the present disclosure. 
     For example, the orthogonal projection of the first via hole  34  for connecting the cathode connection portion  322  and the transparent conductive layer  33  on the substrate  11  is not overlapped with an orthogonal projection of the third via hole  39  for connecting the second anode portion  252  and the connection wire  37  on the substrate  11 , so that the cathode  32  and the anode  25  are kept electrically insulated. 
     As shown in  FIG.  8 A , the connection wire layer  240  further includes a plurality of pads  41 , each pad  41  is electrically connected to a second end of a respective connection wire  37 , and each pad  41  is electrically connected to a second anode portion  252  of a respective anode  25  through a respective third via hole  39 . In the case where the display panel  110  includes a plurality of cathode connection strips  50 , as shown in  FIGS.  9 ,  11 C and  11 D , both orthogonal projections of the third via hole  39  and the pad  41  on the substrate  11  are at least partially overlapped with an orthogonal projection of a cathode connection strip  50  on the substrate  11 . In this case, the second anode portion  252  may be electrically connected to the pad  41  through the third via hole  39 , thereby making the anode  25  electrically connected to the connection wire  37 . 
     In a case where the display panel  110  includes a plurality of connection wire layers  240 , as for the first pixel circuit  3011  and the anode  25  of the light-emitting device  302  that need to be electrically connected by the connection wire, as shown in  FIGS.  8 A and  110   , in addition to providing the pad  41  in the connection wire layer  240  where the connection wire  37  has been provided, an auxiliary pad  42  may also be provided at a respective position of another connection wire layer, and the first pixel circuit  3011  is electrically connected to an anode of a respective light-emitting device  302  by the connection wire  37 , the pad  41  and the auxiliary pad  42 . 
     With continued reference to  FIG.  8 A , in an example where the display panel  110  includes three connection wire layers  240 , and the connection wire  37  for electrically connecting the first pixel circuit  3011  and the anode  25  of the light-emitting device  302  is located in the connection wire layer  240  closest to the substrate  11  in the three connection wire layers  240  (that is, the connection wire  37  is the first connection wire  371  in the first connection wire layer (referring to  FIG.  4   )), a pad  41  electrically connected to the first connection wire  371  may be provided in the first connection wire layer, and besides, an auxiliary pad  42  may be provided in each of the second connection wire layer and the third connection wire layer. In this way, the first pixel circuit  3011  may be electrically connected to the anode  25  through the connection wire  37 , the pad  41  and the two auxiliary pads  42  in sequence. 
     In the above embodiments, through a connection function of the pad  41  and the auxiliary pads  42 , it is possible to prevent the via hole between the first pixel circuit  3011  and the anode  25  of the light-emitting device  302  from being too deep, thereby improving the reliability of the electrical connection between the anode  25  and the first pixel circuit  3011 . 
     For example, an orthogonal projection of the auxiliary pad  42  on the substrate  11  is at least partially overlapped with, e.g., completely overlapped with an orthogonal projection of a respective pad  41  on the substrate  11 , so that an occupied area of the pad  41  and the auxiliary pads  42  may be minimized. In addition, the via holes (referring to the via holes  43  and  44  in  FIG.  8 A ) for electrically connecting two adjacent conductive blocks (including the pad  41  and the auxiliary pad) may be staggered in a direction perpendicular to the substrate  11 . In this way, it is possible to avoid that orthogonal projections of two adjacent via holes on the substrate  11  are overlapped with each other, thereby further improving the reliability of the electrical connection. 
     For example, with continued reference to  FIG.  8 A , in the example where the display panel  110  includes three connection wire layers  240 , and the connection wire  37  for electrically connecting the first pixel circuit  3011  and the anode  25  of the light-emitting device  302  is located in the connection wire layer  240  closest to the substrate  11  in the three connection wire layers  240 , two auxiliary pads  42  are provided on a side of the pad  41  away from the substrate  11 . The pad  41  is connected to an adjacent auxiliary pad  42  through a fourth via hole  43 . The two adjacent auxiliary pads  42  are connected to each other through a fifth via hole  44 . The second anode portion  252  is connected to the auxiliary pad  42  farther away from the pad  41  through the third via hole  39 . The orthogonal projection of the third via hole  39  on the substrate  11  is not overlapped with an orthogonal projection of the fifth via hole  44  on the substrate  11 , and the orthogonal projection of the fifth via hole  44  on the substrate  11  is not overlapped with an orthogonal projection of the fourth via hole  43  on the substrate, so that two via holes adjacent to each other in the direction perpendicular to the substrate  11  are prevented from being located at a same position, thereby further improving the reliability of the electrical connection between the anode  25  and the first pixel circuit  3011 . 
     In some embodiments, referring to  FIG.  6 A , the plurality of sub-pixels  30  of the display panel  110  include a plurality of red sub-pixels  303 , a plurality of green sub-pixels  304  and a plurality of blue sub-pixels  305 . A shape of a first cathode portion  323  of a cathode  32  of a light-emitting device  302  of the green sub-pixel  304  is substantially a circle: a shape of a first cathode portion  323  of a cathode  32  of a light-emitting device  302  of the red sub-pixel  303  is substantially an ellipse, and a shape of a first cathode portion  323  of a cathode  32  of a light-emitting device  302  of the blue sub-pixel  305  is substantially a circle or an ellipse. 
     It will be noted that shapes of first cathode portions  323  of the red sub-pixel  303 , the green sub-pixel  304  and the blue sub-pixel  305  are not limited thereto. For example, the shape of the first cathode portion  323  of the green sub-pixel  304  may also be an ellipse, a square, a hexagon, etc.; the shape of the first cathode portion  323  of the red sub-pixel  303  may also be a circle, a square, a hexagon, etc.; and the shape of the first cathode portion  323  of the blue sub-pixel  305  may also be a square, a hexagon, etc. 
     In some embodiments, a minimum distance between first cathode portions  323  of two green sub-pixels  304  is less than a minimum distance between first cathode portions of two sub-pixels of another same color, Referring to  FIG.  6 A , the minimum distance D 1  between the first cathode portions  323  of the two green sub-pixels  304  is less than the minimum distance D 2  between the first cathode portions  323  of the two red sub-pixels  303 , and is also less than the minimum distance D 3  between the first cathode portions  323  of the two blue sub-pixels  305 . 
     In some embodiments, referring to  FIG.  6 A , active light-emitting areas of light-emitting devices  302  of the red sub-pixels  303  and the blue sub-pixels  305  are alternately arranged in the first direction L 1 ; and active light-emitting areas of light-emitting devices  302  of the green sub-pixels  304  are arranged in the second direction L 2 . An orthogonal projection of an active light-emitting area of a sub-pixel  30  on the substrate  11  is covered by the orthogonal projection of the cathode body portion  321  on the substrate  11 , 
     It will be noted that in sectional views of  FIGS.  5 ,  6 C,  8 A,  80 ,  80 ,  11 B,  11 C and  11 D  in this text, a plurality of insulating layers are shown between the film layer where the plurality of anodes  25  are located and the substrate  11 . and these sectional views are schematically shown based on a background that the display panel  110  includes conductive film layers, i.e., two gate metal layers, two source-drain metal layers and three connection wire layers. In fact, the number of insulating layers between the film layer where the plurality of anodes  25  of the display panel  110  are located and the substrate  11  in the embodiments of the present disclosure is not limited thereto, In a case where the display panel  110  adopts other film structures, the number of insulating layers may be reduced or increased. 
     Some embodiments of the present disclosure provide a method for manufacturing a display panel. The method includes following steps. 
     In S 100 , a plurality of shielding patterns  31  separated from each other are fabricated on a substrate  11 . 
     The shielding patterns  31  may be the shielding patterns  31  in any of the above embodiments. The shielding patterns  31  may be fabricated through processes such as vapor deposition, exposure and etching, which are not specifically limited herein. 
     Before the shielding patterns  31  are fabricated, one or more conductive film layers and one or more insulating layers  80  need to be fabricated on the substrate  11 . The one or more conductive film layers may be at least one of a semiconductor layer  210 , gate metal layers  220 , source-drain metal layers  230  and other conductive film layers. At least one insulating layer  80  is provided between every two adjacent conductive film layers. In a case where first pixel circuits  3011  of sub-pixels  30  in the light-transmissive area  101  of the display panel  110  are disposed at a periphery of the light-transmissive area  101 , conductive patterns for forming the first pixel circuits in the above conductive film layers may exist in the main display area  102  of the display panel  110 .  FIGS.  18  to  20    each show a sectional structure of the light-transmissive area of the display panel  110 , and thus the above conductive film layers cannot be seen in  FIGS.  18  to  20   , but only the insulation layer  80  can be seen. 
     In S 200 , a plurality of light-emitting layers  26  are fabricated on a side of the plurality of shielding patterns  31  away from the substrate  11 . Each light-emitting layer  26  corresponds to a light-emitting device  302 . 
     In the above step, the plurality of light-emitting layers  26  may be fabricated by using an evaporation or inkjet printing process. 
     It will be noted that, before fabricating the plurality of light-emitting layers  26 , a step of fabricating a pixel defining layer  29  is also included. The pixel defining layer  29  includes a plurality of opening areas, and each opening area defines an active light-emitting area  261  of a light-emitting device  302 . 
     In S 300 , a cathode film  27  is fabricated on a side of the plurality of light-emitting layers  26  away from the substrate  11 . The cathode film  27  covers a display area  10  of the display panel  110 . 
     In the above step, the cathode film  27  may be fabricated by using an evaporation process. 
     In S 400 , an area of the substrate  11  corresponding to the light-transmissive area  101  of the display panel  110  is irradiated from a side of the substrate  11  away from the cathode film  27  by using a laser beam to remove portions that are not shielded by the plurality of shielding patterns  31  in a portion of the cathode film  27  located in the area, so as to form a plurality of cathodes  32  separated from each other. 
     Orthogonal projections of the shielding patterns  31  on the substrate  11  cover orthogonal projections of the plurality of cathodes  32  separated from each other on the substrate  11 , respectively. 
     Each light-emitting layer  26  in the light-transmissive area and a respective cathode  32  form a portion of a light-emitting device  302 . Each light-emitting device  302  has an active light-emitting area, and an orthogonal projection of the active light-emitting area on the substrate  11  is located within an orthogonal projection of the cathode  32  of the light-emitting device  302  on the substrate  11 . 
     In some embodiments, the cathode film  27  is capable of transmitting visible light and absorbing infrared light. The shielding pattern  31  is capable of absorbing infrared light. The laser beam is an infrared beam. 
     An orthogonal projection of the shielding pattern  31  on the substrate  11  and the orthogonal projection of the cathode  32  on the substrate  11  are substantially the same in shape and size, and the orthogonal projections of the shielding patterns  31  on the substrate  11  cover the orthogonal projections of the plurality of cathodes  32  separated from each other on the substrate  11 , respectively. Patterning processes such as vapor deposition and etching may be performed to form the shielding patterns  31 , and fabricating accuracy of the processes is high, Shapes of the plurality of cathodes  32  may be controlled by precisely controlling shapes of the shielding patterns  31 , so as to improve the accuracy of patterning the cathode film  27 , improve an aperture ratio of a film layer in which the plurality of cathodes  32  are located, and improve a transmittance of the film layer in which the plurality of cathodes  32  are located to visible light. 
     In some embodiments, as shown in  FIGS.  15  and  18   , an anode is used as the shielding pattern  31 , and then S 100  (in which the plurality of shielding patterns  31  separated from each other are fabricated on the substrate  11 ) includes S 110 . 
     In S 110 , a plurality of anodes  25  separated from each other are fabricated on the substrate  11 . 
     Each light-emitting device  302  includes an anode  25 , and one anode  25  forms one shielding pattern  31 . 
     In a case where one anode  25  forms one shielding pattern  31 , referring to  FIGS.  15  and  18   , the method for manufacturing the display panel  110  includes: 
     S 110 , fabricating the plurality of anodes  25  separated from each other on the substrate  11 ; 
     S 200 , fabricating the plurality of light-emitting layers  26  on a side of the plurality of anodes  25  away from the substrate  11 ; 
     S 300 , fabricating the cathode film  27  on a side of the plurality of light-emitting layers  26  away from the substrate  11 ; and 
     S 400 , irradiating the area of the substrate  11  corresponding to the light-transmissive area  101  of the display panel  110  from the side of the substrate  11  away from the cathode film  27  by using a laser beam. 
     In the case where one anode  25  forms one shielding pattern  31 , the one or more insulating layers  80  include at least all insulating layers in a pixel circuit layer  70  and at least one insulating layer between the pixel circuit layer  70  and a film layer in which the anodes  25  are located. For example, referring to  FIG.  5   , all the insulating layers in the pixel circuit layer  70  include a gate insulating layer  18 , a first interlayer insulating layer  19 , a second interlayer insulating layer  21 , a passivation layer  22  and a planarization layer  23 ; and the at least one insulating layer  28  includes a second insulating layer  282 , a fourth insulating layer  284 , a fifth insulating layer  285  and a third insulating layer  283 . The one or more insulating layers  80  may further include other insulating layers, which will not be listed herein. 
     In some embodiments, as shown in  FIGS.  16 ,  17 ,  19  and  20   , in a case where the light-emitting device  302  includes the anode  25  and a plurality of shielding patterns  31  are located on a side of the anodes  25  of the light-emitting devices  302  proximate to the substrate  11 , S 100  (in which the plurality of shielding patterns  31  separated from each other are fabricated on the substrate  11 ) includes S 120 . 
     In S 120 , a patterned semiconductor layer  210 , patterned gate metal layer(s)  220  and patterned source-drain metal layer(s)  230  are fabricated on the substrate  11 , and the plurality of shielding patterns  31  are formed in a process of forming the patterned semiconductor layer  210  or gate metal layer  220  or source-drain metal layer  230 . The source-drain metal layer(s)  230  are farther away from the substrate  11  than the semiconductor layer  210  and the gate metal layer(s)  220 . 
     Between S 100  (in which the plurality of shielding patterns  31  separated from each other are fabricated on the substrate  11 ) and S 200  (in which the plurality of light-emitting layers  26  are fabricated), the method further includes S 130 . 
     In S 130 , a plurality of anodes  25  are fabricated on the substrate  11 . Each light-emitting device  302  includes an anode  25 . 
     In some embodiments, in a case where the plurality of cathodes  32  are electrically connected through a transparent conductive layer  33 , between S 100  (in which the plurality of shielding patterns  31  separated from each other are fabricated on the substrate  11 ) and S 130  (in which the plurality of anodes are fabricated), the method further includes S 121  to S 123 . 
     In S 121 , the transparent conductive layer  33  is fabricated on a side of the source-drain metal layer  230  away from the substrate  11 . 
     In S 122 , a first insulating layer  281  is fabricated on a side of the transparent conductive layer  33  away from the substrate  11 . 
     In S 123 , a plurality of first via holes  34  are formed in the first insulating layer  281 . 
     A gap exists between an orthogonal projection of each first via hole  34  on the substrate  11  and an orthogonal projection of an adjacent anode  25  on the substrate  11 . The orthogonal projection of each first via hole  34  on the substrate  11  is located within an orthogonal projection of a respective shielding pattern  31  on the substrate  11 , and the plurality of first via holes  34  extend through the first insulating layer  281  to be connected to the transparent conductive layer  33 . 
     In a case of forming the plurality of first via holes  34  in the first insulating layer  281 , during a process of S 300  (fabricating the cathode film  27  on the side of the plurality of light-emitting layers  26  away from the substrate  11 ), a material of the cathode film  27  enters the plurality of first via holes  34 , so that the cathode film  27  is connected to the transparent conductive layer  33  through the cathode material in the plurality of first via holes  34 . 
     Referring to  FIGS.  17  and  19   , in a case where the shielding patterns  31  are located in the semiconductor layer  210  or the gate metal layer  220  or the source-drain metal layer  230 , the method for manufacturing the display panel  110  includes; 
     S 120 , forming the plurality of shielding patterns  31  in a process of fabricating the patterned semiconductor layer  210  or gate metal layer  220  or source-drain metal layer  230  on the substrate  11 ; 
     S 121 , fabricating the transparent conductive layer  33  on the side of the source-drain metal layer  230  away from the substrate  11 ; 
     S 122 , fabricating the first insulating layer  281  on the side of the transparent conductive layer  33  away from the substrate  11 ; 
     S 123 , forming the plurality of first via holes  34  in the first insulating layer  281 ; 
     S 130 , fabricating the plurality of anodes  25  on the substrate  11 ; 
     S 200 , fabricating the plurality of light-emitting layers  26  on the side of the plurality of anodes  25  away from the substrate  11 ; 
     S 300 , fabricating the cathode film  27  on the side of the plurality of light-emitting layers  26  away from the substrate  11 ; and 
     S 400 , irradiating the area of the substrate  11  corresponding to the light-transmissive area  101  of the display panel  110  from the side of the substrate  11  away from the cathode film  27  by using a laser beam. 
     In the above embodiments, the shielding pattern  31  is disposed on a side of the anode  25  proximate to the substrate  11 , and the orthogonal projection of the shielding pattern  31  on the substrate  11  covers the orthogonal projection of the anode  25  on the substrate  11 . 
     In this case, the one or more insulating layers  80  include an insulating layer between the substrate  11  and a film layer in which the shielding patterns  31  are located. For example, in a case where the shielding patterns  31  are located in a film layer in which the gate metal layer  220  is located, the one or more insulating layers  80  include the gate insulating layer  18 . 
     In some embodiments, the plurality of cathodes  32  separated from each other are electrically connected by cathode connection structure(s)  35  disposed in a same layer as the cathodes  32 . In this case, the cathode connection structure(s)  35  and the cathodes  32  may be formed in the following two manners. 
     In a first manner, as shown in  FIG.  11 A , a plurality of shielding connection structures  36  are formed in the process of forming the patterned semiconductor layer  210  or gate metal layer  220  or source-drain metal layer  230 . The plurality of shielding connection structures  36  and the shielding patterns  31  are located in a same film layer. A dimension of each shielding connection structure  36  in a first direction L 1  is greater than a dimension thereof in a second direction L 2 . The first direction L 1  is a row direction in which a plurality of sub-pixels  30  of the display panel  110  are arranged, and the second direction L 2  is a column direction in which the plurality of sub-pixels  30  of the display panel  110  are arranged. Each shielding connection structure  36  is connected to two shielding patterns  31 . The plurality of shielding connection structures  36  are arranged in a plurality of rows, and each row includes multiple shielding connection structures  36  arranged in the first direction L 1 . Each row of shielding connection structures  36  and portions of shielding patterns  31  connected to the shielding connection structures  36  in this row form a shielding connection strip  60 . 
     In the above manner, after S 400  (in which the area of the substrate  11  corresponding to the light-transmissive area  101  of the display panel  110  is irradiated from the side of the substrate  11  away from the cathode film  27  by using a laser beam), referring to  FIG.  9   , it is possible to form the plurality of cathodes  32  and the plurality of cathode connection structures  35  through the cathode film  27 . The plurality of cathode connection structures  35  and the plurality of cathodes  32  are located in a same film layer, and a dimension of each cathode connection structure  35  in the first direction L 1  is greater than a dimension thereof in the second direction L 2 . Each cathode connection structure  35  is electrically connected to two cathodes  32 . The plurality of cathode connection structures  35  are arranged in a plurality of rows, and each row includes multiple cathode connection structures  35  arranged in the first direction L 1 . Each row of cathode connection structures  35  and portions of cathodes  32  connected to the cathode connection structures  35  in this row form a cathode connection strip  50 . 
     In a second manner, as shown in  FIGS.  17  and  20   , before S 400  (in which the area of the substrate  11  corresponding to the light-transmissive area  101  of the display panel  110  is irradiated from the side of the substrate  11  away from the cathode film  27  by using a laser beam), the method for manufacturing the display panel further includes S 310 . 
     In S 310 , a mask  200  is provided on a side of the substrate  11  away from the cathode film  27 . 
     The mask  200  includes at least one light-shielding line  210 , an orthogonal projection of each light-shielding line  210  on the substrate  11  is connected to orthogonal projections of at least two anodes  25  on the substrate  11 . 
     In the above manner, referring to  FIG.  9   , it is also possible to form the plurality of cathodes  32  and the plurality of cathode connection structures  35  through the cathode film  27 . The plurality of cathode connection structures  35  and the plurality of cathodes  32  are located in the same film layer, and the dimension of each cathode connection structure  35  in the first direction L 1  is greater than the dimension thereof in the second direction L 2 . Each cathode connection structure  35  is electrically connected to two cathodes  32 . The plurality of cathode connection structures  35  are arranged in a plurality of rows, and each row includes multiple cathode connection structures  35  arranged in the first direction Li, Each row of cathode connection structures  35  and portions of cathodes  32  connected to the cathode connection structures  35  in this row form a cathode connection strip  50 . 
     Referring to  FIGS.  18  and  20   , in a case of using the mask  200  to form the cathode connection structures  35 , the method for manufacturing the display panel  110  includes: 
     S 120 , forming the plurality of shielding patterns  31  in a process of fabricating the patterned semiconductor layer  210  or gate metal layer  220  or source-drain metal layer  230  on the substrate  11 ; 
     S 130 , fabricating the plurality of anodes  25  on the substrate  11 ; 
     S 200 , fabricating the plurality of light-emitting layers  26  on the side of the plurality of anodes  25  away from the substrate  11 ; 
     S 300 , fabricating the cathode film  27  on the side of the plurality of light-emitting layers  26  away from the substrate  11 ; 
     S 310 , providing the mask  200  on the side of the substrate  11  away from the cathode film  27 ; and 
     S 400 , irradiating the area of the substrate  11  corresponding to the light-transmissive area  101  of the display panel  110  from the side of the substrate  11  away from the cathode film  27  by using a laser beam. 
     The foregoing descriptions are merely specific implementations of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Changes or replacements that any person skilled in the art could readily conceive of within the technical scope of the present disclosure shall be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.