Display panel and electronic equipment

Abstract

The invention provides a display panel and electronic equipment, and relates to the technical field of display. The display panel comprises a superposition structure of a first pixel definition layer, an electrode connection layer and a second pixel definition layer, and a first pixel opening, a second pixel opening and a third pixel opening which are formed based on the superposition structure and the superposition structure, so that a light-emitting functional layer can be prepared without a fine metal mask, and related problems caused by an FMM process are avoided. Moreover, the display panel further comprises a second inorganic film covering the first inorganic film, so that when a water vapor erosion channel appears at the first inorganic film, the second inorganic film can be used for covering and blocking, the risk that the display panel is easily eroded by water vapor is reduced, and the packaging reliability of the display panel is improved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and more specifically, to a display panel and an electronic device. Background Art

[0002] Organic Light-Emitting Diode (OLED) is an active light-emitting device. Compared with the traditional liquid crystal display (LCD) display method, OLED display technology does not require a backlight and has the characteristic of self-luminescence. OLED uses a thinner organic material film layer to prepare a light-emitting device. When an electric current passes through it, the organic material will emit light. OLED display panels have the advantages of saving electricity and being lighter and thinner. In addition, OLED display panels can withstand a wider range of temperature changes than LCD display panels and have a larger viewing angle. OLED display panels are one of the most popular technologies in flat panel display technology. Although OLED display panels have many advantages, there are some defects in the packaging reliability of OLED display panels today, which needs to be further improved. Summary of the invention

[0003] In view of this, the present application provides a display panel and an electronic device, which effectively solve the technical problems existing in the prior art, reduce the risk of the display panel being susceptible to water vapor corrosion, and improve the packaging reliability of the display panel.

[0004] To achieve the above objectives, the technical solutions provided by this application are as follows:

[0005] A display panel, comprising:

[0006] substrate;

[0007] an anode layer, the anode layer being located on the substrate and comprising a plurality of anode blocks;

[0008] A first pixel definition layer, the first pixel definition layer is located on a side of the anode layer away from the substrate, the pixel definition layer comprising a first pixel opening corresponding to the anode block;

[0009] an electrode connection layer, the electrode connection layer being located at a side of the pixel definition layer away from the substrate, the electrode connection layer comprising a second pixel opening corresponding to the first pixel opening;

[0010] a second pixel definition layer, the second pixel definition layer being located on a side of the electrode connection layer away from the substrate, the second pixel definition layer comprising a third pixel opening corresponding to the second pixel opening;

[0011] A light-emitting functional layer, the light-emitting functional layer comprising a plurality of first portions and a plurality of second portions, the first portions being at least located in the first pixel opening, and the second portions at least covering the sidewalls of the third pixel opening;

[0012] a cathode layer, the cathode layer comprising a first cathode portion and a second cathode portion, the first cathode portion covering the first portion and extending to contact the electrode connection layer;

[0013] a first inorganic film, wherein the first inorganic film is located on a side of the cathode layer facing away from the substrate;

[0014] The second inorganic film is located on a side of the first inorganic film away from the substrate, and the second inorganic film covers the first inorganic film.

[0015] Based on the same inventive concept, the present application also provides an electronic device, which includes the above-mentioned display panel.

[0016] Compared with the prior art, the technical solution provided by this application has at least the following advantages:

[0017] The present application provides a display panel and an electronic device, wherein the display panel includes a substrate; an anode layer, the anode layer is located on the substrate, and the anode layer includes a plurality of anode blocks; a first pixel definition layer, the first pixel definition layer is located on a side of the anode layer away from the substrate, and the pixel definition layer includes a first pixel opening corresponding to the anode block; an electrode connection layer, the electrode connection layer is located on a side of the pixel definition layer away from the substrate, and the electrode connection layer includes a second pixel opening corresponding to the first pixel opening; a second pixel definition layer, the second pixel definition layer is located on a side of the electrode connection layer away from the substrate, and the second pixel definition layer includes A third pixel opening corresponding to the second pixel opening; a light-emitting functional layer, the light-emitting functional layer comprising a plurality of first parts and a plurality of second parts, the first part being at least located in the first pixel opening, and the second part at least covering the side wall of the third pixel opening; a cathode layer, the cathode layer comprising a first cathode part and a second cathode part, the first cathode part covering the first part and extending to contact the electrode connection layer; a first inorganic film, the first inorganic film being located on a side of the cathode layer away from the substrate; a second inorganic film, the second inorganic film being located on a side of the first inorganic film away from the substrate, and the second inorganic film covering the first inorganic film.

[0018] As can be seen from the above content, the technical solution provided by the present application, the display panel includes a superposition structure of a first pixel definition layer, an electrode connection layer and a second pixel definition layer, based on the superposition structure and the first pixel opening, the second pixel opening and the third pixel opening formed by the superposition structure, it is possible to prepare a light-emitting functional layer without a fine metal mask (Fine Metal Mask, FMM), so as not to be subject to the related problems caused by the FMM process. In addition, the display panel also includes a second inorganic film covering the first inorganic film, so when a water vapor erosion channel appears at the first inorganic film, it can be covered and blocked by the second inorganic film, thereby reducing the risk of the display panel being susceptible to water vapor erosion and improving the packaging reliability of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0020] Figure 1 A schematic diagram of the structure of a display panel provided in an embodiment of the present application;

[0021] Figure 2 A schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0022] Figure 3 A schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0023] Figure 4 A schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0024] Figure 5 A schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0025] Figure 6 A schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0026] Figure 7 A schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0027] Figure 8 A schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0028] Fig. 9 A schematic diagram of the structure of a light-emitting functional layer provided in an embodiment of the present application;

[0029] Fig.10 A schematic diagram of the structure of another light-emitting functional layer provided in an embodiment of the present application;

[0030] Fig.11 A schematic diagram of the structure of an OLED provided in an embodiment of the present application;

[0031] Fig.12 A schematic diagram of the structure of another OLED provided in an embodiment of the present application;

[0032] Fig.13 A schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0033] Fig.14 A schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0034] Fig.15 A schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0035] Fig.16 A schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0036] Fig.17 A schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0037] Fig.18 A light path diagram provided for an embodiment of the present application;

[0038] Fig.19 A schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0039] Fig. 20 Another optical path diagram provided for an embodiment of the present application;

[0040] Fig.21 A schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0041] Fig. 22 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0042] Reference numerals:

[0043] 10-substrate; 11-retaining wall; 101-substrate; 102-semiconductor layer; 103-gate insulating layer; 104-gate metal layer; 105-capacitor insulating layer; 106-capacitor metal layer; 107-interlayer insulating layer; 108-source-drain metal layer; 109-planarization layer; 20-anode layer; 21-anode block; 31-first pixel definition layer; 32-electrode connection layer; 33-second pixel definition layer; 301 first pixel opening; 302-second pixel opening Pixel opening; 303-third pixel opening; 40-light-emitting functional layer; 401-hole transport layer; 4011-first hole transport layer; 4012-second hole transport layer; 402-light-emitting layer; 4021-first light-emitting layer; 4022-second light-emitting layer; 403-hole blocking layer; 4031-first hole blocking layer; 4032-second hole blocking layer; 404-electron transport layer; 4041-first electron transport layer; 4042-second electron transport layer Sub-transport layer; 405-electron injection layer; 406-N-type charge generation layer; 407-P-type charge generation layer; 41-first part; 411-first color light part; 412-second color light part; 42-second part; 50-cathode layer; 51-first cathode part; 52-second cathode part; 53-cathode covering film; 61-first inorganic film; 611-inorganic film block; 62-second inorganic film; 63-third inorganic film; 70-inorganic film; 1 00-display panel; 1000-electronic device; AA-display area; NA-frame area; 80-color resistance layer; 81-color resistance part; 811-first color light color resistance part; 812-second color light color resistance part; 91-first refraction layer; 911-first refraction part; 911a-first color light refraction part; 911b-second color light refraction part; 92-second refraction layer; 1000-clock device; AA-display area; NA-frame area; NL-normal. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0045] As described in the background technology, organic light emitting diodes are active light emitting devices. Compared with traditional liquid crystal display, OLED display technology does not require a backlight and has the characteristic of self-luminescence. OLED uses a thinner organic material film layer to prepare a light emitting device. When an electric current passes through it, the organic material will emit light. OLED display panels have the advantages of saving electricity and being lighter and thinner. In addition, OLED display panels can withstand a wider range of temperature changes than LCD display panels and have a larger viewing angle. OLED display panels are one of the most popular technologies in flat panel display technology. Although OLED display panels have many advantages, there are some defects in the packaging reliability of OLED display panels today, which needs to be further improved.

[0046] Specifically, in the current preparation process of OLED display panels, the preparation of RGB light-emitting functional layers is generally made by FMM evaporation technology. However, due to the FMM process, the use of FMM process to evaporate the RGB light-emitting functional layer requires a large shadow), which is difficult to use for ultra-high pixel density (pixel per inch, PPI) products. At the same time, the evaporation of large-size panels is limited by the uncontrollable factors of the sagging deformation of the mask strip (Sheet), so FMM evaporation of the RGB light-emitting functional layer cannot be used. With the development of display technology, high-end mobile displays require larger size, higher resolution, higher color gamut and lower power consumption. Therefore, non-FMM evaporation of RGB light-emitting functional layers has become an important development direction. However, the display panel prepared by the non-FMM evaporation process has a poor packaging structure in the display panel due to the particularity of the prepared pixel definition structure, which has a certain risk of water vapor erosion, reducing the packaging reliability of the display panel.

[0047] Based on this, the embodiment of the present application provides a display panel 100 and an electronic device 1000 , which effectively solve the technical problems existing in the prior art, reduce the risk of the display panel 100 being susceptible to water vapor corrosion, and improve the packaging reliability of the display panel 100 .

[0048] To achieve the above purpose, the technical solution provided in the embodiment of the present application is as follows, specifically combined with Figures 1 to 22 The technical solution provided in the embodiments of the present application is described in detail.

[0049] refer to Figure 1, which is a schematic diagram of the structure of a display panel 100 provided in an embodiment of the present application, wherein the display panel 100 provided in an embodiment of the present application includes: a substrate 10. An anode layer 20, the anode layer 20 is located on the substrate 10, and the anode layer 20 includes a plurality of anode blocks 21. A first pixel definition layer 31, the first pixel definition layer 31 is located on a side of the anode layer 20 away from the substrate 10, and the pixel definition layer 31 includes a first pixel opening 301 corresponding to the anode block 21. An electrode connection layer 32, the electrode connection layer 32 is located on a side of the pixel definition layer 31 away from the substrate 10, and the electrode connection layer 32 includes a second pixel opening 302 corresponding to the first pixel opening 301. A second pixel definition layer 33, the second pixel definition layer 33 is located on a side of the electrode connection layer 32 away from the substrate 10, and the second pixel definition layer 33 includes a third pixel opening 303 corresponding to the second pixel opening 302. A light-emitting functional layer 40, the light-emitting functional layer 40 includes a plurality of first portions 41 and a plurality of second portions 42, the first portion 41 is at least located in the first pixel opening 301, and the second portion 42 at least covers the sidewall of the third pixel opening 303. A cathode layer 50, the cathode layer 50 includes a first cathode portion 51 and a second cathode portion 52, the first cathode portion 51 covers the first portion 41 and extends to contact the electrode connection layer 32, so that all the first portions 41 in the display panel 100 are connected through the electrode connection layer 32, which is equivalent to forming the entire cathode in the display panel 100. A first inorganic film 61, the first inorganic film 61 is located on the side of the cathode layer 50 away from the substrate 10. A second inorganic film 62, the second inorganic film 62 is located on the side of the first inorganic film 61 away from the substrate 10, and the second inorganic film 62 covers the first inorganic film 61.

[0050] From the above content, it can be seen that the technical solution provided in the embodiment of the present application, the display panel 100 includes a superimposed structure of a first pixel definition layer 31, an electrode connection layer 32 and a second pixel definition layer 33, based on the superimposed structure and the first pixel opening 301, the second pixel opening 302 and the third pixel opening 303 formed by the superimposed structure, it is possible to realize the preparation of the light-emitting functional layer 40 without FMM, thereby not being affected by the related problems brought about by the FMM process. That is to say, before preparing the light-emitting functional layer 40 of the display panel 100, the superimposed structure of the first pixel definition layer 31, the electrode connection layer 32 and the second pixel definition layer 33 is first prepared, and then the light-emitting functional layer 40 and the cathode layer 50 are formed based on the Open Mask process and the graphical processing process. The light-emitting functional layer 40 and the cathode layer 50 prepared by this process include at least a first part located at the first pixel opening 301, and at least a second part located at the inner wall of the second pixel definition layer 33 at the pixel opening (that is, the side wall of the third pixel opening 303). It can be seen that the present application does not need to adopt the FMM process to prepare the light-emitting functional layer 40. The process of preparing the light-emitting functional layer 40 by using the FMM process is the same as the prior art, so the present application will not make redundant descriptions.

[0051] In addition, the display panel 100 provided in the embodiment of the present application includes a first inorganic film 61 prepared after the cathode layer 50. Since the display panel 100 includes a stacked structure of a first pixel definition layer 31, an electrode connection layer 32, and a second pixel definition layer 33, and a corner structure is inevitably formed between two adjacent structural layers in the stacked structure, the first inorganic film 61 is prone to cracks and other problems at these corner structures, thereby causing a water vapor erosion channel to appear at the first inorganic film 61. The display panel 100 provided in the embodiment of the present application also includes a second inorganic film 62 covering the first inorganic film 61. Therefore, when a water vapor erosion channel appears at the first inorganic film 61, it can be covered and blocked by the second inorganic film 62, thereby reducing the risk of the display panel 100 being susceptible to water vapor erosion and improving the packaging reliability of the display panel 100.

[0052] In some embodiments, during the preparation of the display panel 100 provided in the embodiment of the present application, the patterning etching process of the light-emitting functional layer 40 and the cathode layer 50 is performed after the preparation of the first inorganic film 61 is completed. Since the light-emitting functional layer 40 needs to be etched and divided at the boundary between adjacent pixel units to achieve single pixel encapsulation, the first inorganic film 61 is also etched and divided into multiple inorganic film blocks 611. Figure 1As shown, the first inorganic film 61 provided in the embodiment of the present application includes a plurality of inorganic film blocks 611, and the inorganic film blocks 611 cover the first cathode portion 51, and extend to cover the second cathode portion 52 away from the second portion 42. Among them, the inorganic module 611 is not only prone to cracks and other problems at the corner structure of the superimposed structure of the first pixel definition layer 31, the electrode connection layer 32 and the second pixel definition layer 33, so that a water vapor erosion channel appears at the crack; the inorganic module 611 is etched and divided, and a water vapor erosion channel is also formed at the second portion 42 and the second cathode portion 52. Therefore, the water vapor erosion channel at the inorganic module 611 is covered and blocked by the second inorganic film 62, thereby reducing the risk of the display panel 100 being susceptible to water vapor erosion and improving the packaging reliability of the display panel 100. In some other embodiments, the first inorganic film 61 provided in the embodiment of the present application can also be prepared after the patterned etching process of the light-emitting functional layer 40 and the cathode layer 50 is completed, wherein the first inorganic film 61 can also be a whole-surface film structure, which is not specifically limited in the present application.

[0053] The substrate 10 provided in the embodiment of the present application is composed of structural layers such as multiple metal layers and multiple insulating layers, and these structural layers will be prepared into circuits such as pixel circuits and scan drive circuits in the substrate 10. Among them, the scan drive circuit is electrically connected to the pixel circuit, and the scan drive circuit is used to provide a corresponding scan control signal for the pixel circuit; and the pixel circuit is electrically connected to the anode block 21, and the pixel circuit is used to provide a corresponding drive signal for the OLED composed of the anode block 21, the first part 41 and the first cathode part 51, wherein the scan drive circuit and the pixel circuit are both composed of components such as transistors and capacitors, which is the same as the prior art, so no unnecessary details are given. Specific reference Figure 2As shown, it is a schematic structural diagram of another display panel 100 provided in an embodiment of the present application, wherein the substrate 10 includes a substrate 101; a semiconductor layer 102 located on the substrate 101, the semiconductor layer 102 including an active region forming a transistor TFT; a gate insulating layer 103 located on a side of the semiconductor layer 102 away from the substrate 101; a gate metal layer 104 located on a side of the gate insulating layer 103 away from the substrate 101, the gate metal layer 104 including a gate electrode forming the transistor TFT; a capacitor insulating layer 105 located on a side of the gate metal layer 104 away from the substrate 101; a capacitor metal layer 106 located on a side of the capacitor insulating layer 105 away from the substrate 101, the capacitor metal layer 106 including a plate forming a capacitor in a circuit, and another plate forming a capacitor may be located on the gate metal layer 104, or another plate forming a capacitor may be located on the source-drain metal layer 104. a metal layer 108; an interlayer insulating layer 107 located on the side of the capacitor metal layer 106 away from the substrate 101; a source-drain metal layer 108 located on the side of the interlayer insulating layer 107 away from the substrate 101, the source-drain metal layer 108 including a source and a drain forming a transistor TFT, and the source and the drain are in contact with the active area through respective vias; a planarizing layer 109 located on the side of the source-drain metal layer 108 away from the substrate 101; an anode layer 20 located on the side of the planarizing layer 109 away from the substrate 101, the anode layer 20 including a plurality of anode blocks 21, the anode blocks 21 being electrically connected to the source or drain of the corresponding transistor TFT in the pixel circuit through vias; and a first pixel definition layer 31 located on the side of the anode layer 20 away from the substrate 101, the first pixel definition layer 31 including a plurality of first pixel openings 301, the first pixel openings 301 exposing the anode blocks 21.

[0054] Figure 2 In the display panel 100 shown, the transistor TFT in the substrate 10 is a top-gate transistor, that is, the gate of the transistor TFT is located above the active layer. In some other embodiments, the transistor TFT in the substrate 10 provided in the embodiment of the present application can also be a bottom-gate transistor, that is, the gate of the transistor TFT is located below the active layer. Figure 31 is a schematic diagram of the structure of another display panel 100 provided in an embodiment of the present application, wherein the substrate 10 includes a substrate 101; a gate metal layer 104 located on the substrate 101, the gate metal layer 104 includes a gate electrode forming a transistor TFT; a gate insulating layer 103 located on a side of the gate metal layer 104 away from the substrate 101; a semiconductor layer 102 located on a side of the gate insulating layer 103 away from the substrate 101, the semiconductor layer 102 includes an active region forming a transistor TFT; a capacitor insulating layer 105 located on a side of the semiconductor layer 102 away from the substrate 101; a capacitor metal layer 106 located on a side of the capacitor insulating layer 105 away from the substrate 101, the capacitor metal layer 106 includes a plate forming a capacitor in a circuit, and another plate forming a capacitor may be located on the gate metal layer 104, or another plate forming a capacitor may be located on the source A drain metal layer 108; an interlayer insulating layer 107 located on the side of the capacitor metal layer 106 away from the substrate 101; a source-drain metal layer 108 located on the side of the interlayer insulating layer 107 away from the substrate 101, the source-drain metal layer 108 including a source and a drain forming a transistor TFT, and the source and the drain are in contact with the active area through respective vias; a planarizing layer 109 located on the side of the source-drain metal layer 108 away from the substrate 101; an anode layer 20 located on the side of the planarizing layer 109 away from the substrate 101, the anode layer 20 including a plurality of anode blocks 21, the anode blocks 21 being electrically connected to the source or drain of the corresponding transistor TFT in the pixel circuit through vias; and a first pixel definition layer 31 located on the side of the anode layer 20 away from the substrate 101, the first pixel definition layer 31 including a plurality of first pixel openings 301, the first pixel openings 301 exposing the anode blocks 21.

[0055] refer to Figure 4, which is a schematic diagram of the structure of another display panel 100 provided in an embodiment of the present application, wherein the display panel 100 provided in an embodiment of the present application includes: an organic film 70, located on the side of the second inorganic film 62 away from the substrate 10, and a third inorganic film 63, located on the side of the organic film 70 away from the substrate. The encapsulation structure provided in an embodiment of the present application may be a first inorganic film 61, a second inorganic film 62, an organic film 70 and a third inorganic film 63 stacked in sequence, the inorganic film can effectively prevent water vapor and the like from invading the interior of the panel, and inserting the organic film 70 between the inorganic films helps to stabilize the uneven properties of the inorganic films and improve the stress and flexibility of the encapsulation structure, so the encapsulation reliability of the display panel 100 can be further improved by the cooperation between the first inorganic film 61, the second inorganic film 62, the organic film 70 and the third inorganic film 63. Optionally, at least one inorganic film (such as at least one of the first inorganic film 61, the second inorganic film 62, and the third inorganic film 63) in the display panel 100 provided in the embodiment of the present application is a SiOx film, a SiNx film, or a SiOx / SiNx laminated film. In addition, the embodiment of the present application does not impose any specific restrictions on the thickness of the inorganic film, and it needs to be adaptively adjusted according to the actual application to cooperate with other film layers to optimize the light emission effect of the OLED.

[0056] In addition to adding the organic film 70 and the third inorganic film 63 on the second inorganic film 62 to improve the packaging reliability of the display panel 100, the present application can also optimize the coverage of the second inorganic film 62 to improve the packaging reliability of the display panel 100. In some embodiments, the display panel 100 provided in the embodiment of the present application can be a borderless display panel 100, and the borderless display panel 100 only includes a display area AA, wherein the scanning drive circuit and the pixel circuit can be both arranged in the display area AA, and the second inorganic film 62 covers the display area AA. Alternatively, the display panel 100 provided in the embodiment of the present application can also be a narrow-border display panel 100 including a display area AA and a border area NA, wherein the scanning drive circuit can be arranged in the border area NA, and the pixel circuit is arranged in the display area AA, wherein the second inorganic film 62, in addition to covering the display area AA, also extends to cover at least a portion of the border area NA to further improve the packaging reliability of the display panel 100. For specific reference, Figure 5 , which is a schematic diagram of the structure of another display panel 100 provided in an embodiment of the present application, the display panel 100 provided in an embodiment of the present application comprises: a display area AA and a frame area NA surrounding at least a portion of the display area AA, and the second inorganic film 62 covers the display area AA and extends to cover at least a portion of the frame area NA. The second inorganic film 62 can not only block water vapor erosion in the display area AA, but also block water vapor erosion in the frame area NA, further improving the packaging reliability of the display panel 100. Continue to refer to Figure 5 As shown, the first inorganic film 61 provided in the embodiment of the present application may only include the inorganic module 611 located in the display area AA and corresponding to the first portion 41, while the first inorganic film 61 is not prepared in the frame area NA, or is etched and removed after preparation.

[0057] Or refer to Figure 6 , which is a schematic diagram of the structure of another display panel 100 provided in an embodiment of the present application, wherein the first inorganic film 61 provided in the embodiment of the present application includes, in addition to the inorganic module 611 located in the display area AA, the first inorganic film 61 also includes an inorganic film portion 612 covering at least a portion of the border area NA. The first inorganic film 61 and the second inorganic film 62 are used to jointly block water vapor erosion in the border area NA, thereby improving the packaging reliability of the display panel 100. Figure 5 and Figure 6 As shown, the packaging structure of the display panel 100 provided in the embodiment of the present application may include an organic film 70 and a third inorganic film 63, and the organic film 70 and the third inorganic film 63 may also cover the display area AA, and extend to cover at least a portion of the border area NA. Further, the first inorganic film 61 and the third inorganic film 63 contact each other at the border area NA to form a type sealed cavity, and the organic film 70 is located in the sealed cavity to avoid the formation of a water vapor erosion channel at the edge of the organic film 70, thereby ensuring high packaging reliability of the display panel 100.

[0058] In some embodiments, the frame area NA of the display panel 100 provided in the embodiment of the present application is provided with at least one retaining wall 11 arranged along the direction surrounding the display area AA, and the at least one inorganic film provided in the embodiment of the present application is also extended to the retaining wall 11 to improve the packaging reliability. Figure 7 As shown, it is a schematic diagram of the structure of another display panel 100 provided in an embodiment of the present application. The border area NA provided in the embodiment of the present application includes at least one retaining wall 11 arranged along the direction surrounding the display area AA, and the retaining wall 11 is arranged on the side of the substrate 10 having the OLED. The retaining wall 11 can be formed by reusing at least two structures of the planarization layer 109, the first pixel definition layer 31 and the second pixel definition layer 32 in the display panel 100; or, the retaining wall 11 can also be made of a separate material. Among them, the second inorganic film 62 provided in the embodiment of the present application covers the display area AA and extends to cover the outside of the at least one retaining wall 11, as shown in FIG. Figure 7 As shown in the figure, the second inorganic film 62 extends to the outside of all the retaining walls 11 (for example, the second inorganic film 62 can extend to the clearance area outside all the retaining walls 11). Thus, not only the second inorganic film 62 but also the retaining walls 11 can block water vapor erosion, thereby further improving the packaging reliability of the display panel 100.

[0059] It should be noted that when the display panel 100 provided in the embodiment of the present application includes the retaining wall 11, the packaging structure is not limited to Figure 7 The structure shown is only one of all packaging structures applicable to the present application. In some other embodiments, the first inorganic film 61 provided in the embodiment of the present application may include an inorganic film portion 612 covering at least a portion of the border area NA, and the first inorganic film 61 also extends to cover at least one retaining wall 11, such as extending to cover one retaining wall 11, or extending to cover more or even all retaining walls 11 (specifically, Figure 8 The first inorganic film 61 shown extends to cover all the retaining walls 11), and this application does not make any specific restrictions on this. Similarly, the third inorganic film 63 provided in the embodiment of the present application can also extend to cover at least one retaining wall 11, such as extending to cover one retaining wall 11, or extending to cover more or even all retaining walls 11, and this application does not make any specific restrictions on this.

[0060] In some embodiments, the electrode connection layer 32 provided in the embodiment of the present application exposes the surface of the first pixel definition layer 31 on the side away from the substrate 10; and the second pixel definition layer 33 faces the bottom surface of the substrate 10 and extends beyond the surface of the electrode connection layer 32 on the side away from the substrate 10, thereby forming an undercut structure between the second pixel definition layer 33 and the electrode connection layer 32, which is not only convenient for single pixel packaging, but also conducive to color gamut improvement. Figures 1 to 8 As shown, the second pixel definition layer 33 provided in the embodiment of the present application faces the bottom surface of one side of the substrate 10 and extends beyond the surface of the electrode connection layer 32 away from the substrate 10, so that the orthographic projection of the second pixel opening 302 on the substrate 10 completely covers the orthographic projection of the third pixel opening 303 on the substrate 10, thereby forming an undercut structure between the second pixel definition layer 33 and the electrode connection layer 32, which is beneficial to single pixel packaging and color gamut improvement. In addition, the electrode connection layer 32 provided in the embodiment of the present application exposes the surface of the first pixel definition layer 31 away from the substrate 10, so that the orthographic projection of the second pixel opening 302 on the substrate 10 completely covers the orthographic projection of the first pixel opening 301 on the substrate 10. While the light-emitting functional layer 40 can be prepared by the non-FMM process, the first part 41 can extend to the side wall of the second pixel opening 302 (that is, the electrode connection layer 32 is on the inner wall of the second pixel opening 302), which is equivalent to increasing the light-emitting area of ​​the first part 41, thereby improving the light-emitting efficiency and light-emitting area of ​​the OLED.

[0061] In some embodiments, the light-emitting functional layer 40 provided in the embodiment of the present application may only include a light-emitting layer. In this case, the light-emitting efficiency of the OLED may be improved by increasing the light-emitting area of ​​the first portion 41 as described above. In addition, in addition to increasing the light-emitting area of ​​the first portion 41, the embodiment of the present application may also optimize the design of the superimposed structure of the light-emitting functional layer 40 itself to achieve the purpose of improving the light-emitting efficiency of the OLED. Fig. 9 As shown, it is a schematic diagram of the structure of a light-emitting functional layer provided in an embodiment of the present application, wherein the light-emitting functional layer 40 includes a hole transport layer 401, a light-emitting layer 402, a hole blocking layer 403 and an electron transport layer 404 which are located on the anode layer 20 and are stacked in sequence, and further includes a hole injection layer 408 located between the anode layer 20 and the hole transport layer 401, and an electron injection layer 405 located on the side of the electron transport layer 404 away from the anode layer 20, wherein the cathode layer 50 is located on the side of the electron injection layer 405 away from the anode layer 20, thereby achieving the purpose of improving the luminous efficiency of the OLED by optimizing the structure of the light-emitting functional layer 40.

[0062] Or Fig.10 As shown, it is a schematic diagram of the structure of another light-emitting functional layer provided in an embodiment of the present application, wherein the light-emitting functional layer 40 includes a first hole transport layer 4011, a first light-emitting layer 4021, a first hole blocking layer 4031, a first electron transport layer 4041, an N-type charge generation layer 406, a P-type charge generation layer 407, a second hole transport layer 4012, a second light-emitting layer 4022, a second hole blocking layer 4032 and a second electron transport layer 4042, which are located on the anode layer 20 and are stacked in sequence, and further includes a hole injection layer 408 located between the anode layer 20 and the hole transport layer 401, and an electron injection layer 405 located on the side of the second electron transport layer 4042 away from the anode layer 20, wherein the cathode layer 50 is located on the side of the electron injection layer 405 away from the anode layer 20. It can be understood that the light-emitting functional layer 40 provided in the embodiment of the present application may include two light-emitting layers and a charge generation layer located between the light-emitting layers. The two independent light-emitting layers are connected together through the intermediate charge generation layer. Under the action of the external electric field, the charge generation layer generates holes and electrons, which are respectively injected into the hole transport layer and the electron transport layer of the two adjacent light-emitting layers, and are respectively combined with the electrons from the cathode layer 50 and the holes from the anode layer 20 in the light-emitting layer, so that the light-emitting layer emits light. Among them, the N-type charge generation layer 406 is used to inject electrons into the light-emitting layer connected thereto, and the P-type charge generation layer 407 is used to inject holes into the light-emitting layer connected thereto, thereby ensuring that the charges are effectively distributed to the light-emitting layers while improving the current efficiency of each light-emitting layer, thereby achieving the purpose of improving the light-emitting efficiency of the OLED.

[0063] It should be noted that the light-emitting functional layer 40 provided in the embodiment of the present application can be made of Fig. 9 The light emitting layer 402 shown in FIG. 1 may also be composed of Fig.10 In some other embodiments, the light-emitting functional layer 40 provided in the embodiment of the present application can also be composed of more light-emitting layers, and can also include more structural layers that optimize light emission, which needs to be specifically designed according to actual applications.

[0064] refer to Fig.11 , which is a schematic diagram of the structure of an OLED provided in an embodiment of the present application, wherein the OLED provided in an embodiment of the present application may be composed of an anode block 21, a first portion 41 and a first cathode portion 51, Fig.11 The first portion 41 shown is Fig. 9 The light-emitting functional layer 40 is taken as an example. Further, the OLED provided in the embodiment of the present application further includes a cathode capping layer 53 covering the first cathode portion 51. The cathode capping layer 53 is located between the first cathode portion 51 and the inorganic module 611 and is used to form an optical microcavity, thereby improving the light extraction and color purity of the OLED through the microcavity effect. Fig.11 The light indicated by the dotted arrows shown in the figure, the cathode cover film 53 can make the light emitted by the light-emitting layer 42 reflect multiple times between the first cathode portion 51 and the anode block 21, thereby generating a strong interference effect. Optionally, the cathode cover layer 53 provided in the embodiment of the present application can be made of a high refractive index material, and the present application does not make any specific restrictions on this.

[0065] refer to Fig.12 , which is a schematic diagram of the structure of another OLED provided in an embodiment of the present application, wherein the OLED provided in an embodiment of the present application may further include a protective layer 54 located on the cathode covering film 53, wherein the protective layer 54 is located between the cathode covering layer 53 and the inorganic film block 611, and at least plays a role in protecting the cathode covering film 53. Optionally, the protective layer 54 may be prepared from lithium fluoride (LiF).

[0066] In some embodiments, the display panel 100 provided in the embodiment of the present application can be prepared as a CFOT (Color Filter On TFE) type panel, that is, a color filter is prepared at the packaging structure of the display panel 100. Fig.13As shown, it is a structural schematic diagram of another display panel 100 provided in an embodiment of the present application, wherein the display panel 100 provided in an embodiment of the present application further includes a color resist layer 80, the color resist layer 80 is located on the side of the second inorganic film 62 away from the substrate, and the color resist layer 80 includes a plurality of color resist portions 81, and the color resist portions 81 are arranged corresponding to the first portion 41. The color resist portion 81 is used to filter out the color light corresponding to the first portion 41, such as the first portion 41 provided in an embodiment of the present application includes a red light portion, a green light portion and a blue light portion, the color resist portion 81 corresponding to the red light portion filters out the remaining color light through the red light, the color resist portion 81 corresponding to the green light portion filters out the remaining color light through the green light, and the color resist portion 81 corresponding to the blue light portion filters out the remaining color light through the blue light, which not only makes it unnecessary to set a polarizer for the display panel 100, but also can improve the display effect of the display panel 100 by filtering out the stray light other than the light output of the first portion 41.

[0067] When the display panel 100 provided in the embodiment of the present application is also encapsulated by the organic film 70 and the third inorganic film 63, the color resist layer 80 provided in the embodiment of the present application can be prepared before the organic film 70. Fig.14 , which is a schematic diagram of the structure of another display panel 100 provided in an embodiment of the present application, wherein the display panel 100 provided in an embodiment of the present application further includes: an organic film 70, the organic film 70 is located on the side of the second inorganic film 62 away from the substrate 10; a third inorganic film 63, the third inorganic film 63 is located on the side of the organic film 70 away from the substrate 10; wherein the color resist portion 81 is located between the second inorganic film 62 and the organic film 70. The technical solution provided in an embodiment of the present application integrates the color resist layer 80 into the packaging structure, and reuses the organic film 70 and the third inorganic film 63 as a protective layer to protect the color resist layer 80, so that there is no need to prepare a protective film layer separately, which reduces the preparation process steps of the display panel 100 and reduces the preparation cost of the display panel 100. Furthermore, the second pixel definition layer 33 provided in the embodiment of the present application is a black matrix, which is used to block the ambient light, thereby improving the display effect of the display panel 100; and, the embodiment of the present application reuses the second pixel definition layer 33 as a black matrix, thereby eliminating the need to prepare a black matrix structure separately, further reducing the preparation process steps of the display panel 100 and reducing the preparation cost of the display panel 100.

[0068] Alternatively, when the display panel 100 provided in the embodiment of the present application is also encapsulated by the organic film 70 and the third inorganic film 63, the color resist layer 80 provided in the embodiment of the present application can also be prepared after the third inorganic film 63. Fig.15As shown, it is a structural schematic diagram of another display panel 100 provided in an embodiment of the present application, wherein the display panel 100 provided in an embodiment of the present application further includes an organic film 70, and the organic film 70 is located on the side of the second inorganic film 62 away from the substrate 10; a third inorganic film 63, and the third inorganic film 63 is located on the side of the organic film 70 away from the substrate 10; wherein the color resistance portion 81 is located on the side of the third inorganic film 63 away from the substrate 10, and the display panel 100 further includes a black matrix BM located on the side of the third inorganic film 63 away from the substrate 10, and the black matrix BM surrounds the color resistance portion 81. By setting the color resistance portion 81, not only the display effect of the display panel 100 can be improved, but also the polarizer in the display panel 100 can be omitted; and, by blocking the ambient light through the black matrix BM, the display effect of the display panel 100 can be further improved.

[0069] It should be noted that the color resistance portion 81 provided in the embodiment of the present application can be as follows: Fig.12 As shown, the color resist portion 81 is disposed between the second inorganic film 62 and the organic film 70. The color resist portion 81 can also be disposed on the third inorganic film 63 as shown in FIG13. The preparation position of the color resist portion 81 can be selected according to the actual application, thereby expanding the applicable types of the display panel 100. In addition, the color resist portion 81 provided in the embodiment of the present application can be set to different thicknesses according to the light emission wavelength of the first portion 41, thereby balancing the light emission efficiency of pixels of different color lights and improving the light emission uniformity of the display panel 100. Fig.16 As shown, it is a structural schematic diagram of another display panel 100 provided in an embodiment of the present application, wherein the display panel 100 provided in the embodiment of the present application may include a first part 41 of at least two light emitting colors, that is, the first part 41 provided in the embodiment of the present application at least includes a first color light part 411 and a second color light part 412, and the wavelength of the first color light part 411 is greater than the wavelength of the second color light part 412; the color resist portion 81 corresponding to the first color light part 411 is the first color light color resist portion 811, and the color resist portion 81 corresponding to the second color light part 412 is the second color light color resist portion 812; in the direction Y perpendicular to the plane where the display panel 100 is located, the thickness d1 of the first color light color resist portion 811 is greater than the thickness d2 of the second color light color resist portion 812. Since the light effect is positively correlated with the color resist film thickness, that is, the greater the color resist film thickness, the greater the light effect, and vice versa, the smaller the color resist film thickness, the smaller the light effect, the color resist portions of different colors are set to have different thicknesses, thereby balancing the light output efficiency of the pixels corresponding to the first color light portion 411 and the pixels corresponding to the second color light portion 412, improving the light output uniformity of the display panel 100 and avoiding color deviation, thereby improving the display effect of the display panel 100.

[0070] Optionally, the first part 41 provided in the embodiment of the present application may include a red light part, a green light part and a blue light part, the color resistance part 81 corresponding to the red light part is a red light color resistance part, the color resistance part 81 corresponding to the green light part is a green light color resistance part, and the color resistance part 81 corresponding to the blue light part is a blue light color resistance part. Among them, the wavelength of the red light part is greater than the wavelength of the green light part, and the wavelength of the green light part is greater than the wavelength of the blue light part. Therefore, in order to balance the light output efficiency of the pixels corresponding to the red light part, the green light part and the blue light part, the embodiment of the present application can set the thickness of the red light color resistance part to be greater than the thickness of the blue light color resistance part and the green light color resistance part, and the thickness of the green light color resistance part can be greater than the thickness of the blue light color resistance part, or the thickness of the green light color resistance part can be set to be equal to the thickness of the blue light color resistance part, which needs to be specifically designed according to the actual application.

[0071] In some embodiments, the display panel 100 provided in the embodiment of the present application may further be provided with at least two refractive layers with different refractive indices corresponding to the first portion 41, so as to improve the light emitting effect of the pixel corresponding to the first portion 41. Fig.17 As shown, it is a structural schematic diagram of another display panel 100 provided in an embodiment of the present application. The display panel 100 provided in an embodiment of the present application further includes: a first refractive layer 91, the first refractive layer 91 is located on the side of the second inorganic film 62 away from the substrate 10, the first refractive layer 91 includes a plurality of first refractive portions 911, and the first refractive portions 911 are arranged corresponding to the first portion 41; wherein the refractive index of the first refractive layer 91 is different from the refractive index of the second inorganic film 62, thereby the second inorganic film 62 and the first refractive layer 91 cooperate to improve the light emitting efficiency of the pixel at the first portion 41 when light is emitted, thereby improving the display effect of the display panel 100.

[0072] Optionally, the refractive index of the first refractive layer 91 provided in the embodiment of the present application is greater than the refractive index of the second inorganic film 62. Fig.18 As shown, it is a light path diagram provided in an embodiment of the present application. Fig.18 The dotted arrows indicate the light, wherein the light emitted from the first portion 41 is incident on the interface between the second inorganic film 62 and the first refractive portion 911. Since the refractive index of the second inorganic film 62 is less than that of the first refractive portion 911, the total reflection will be reduced when the light enters the medium with a high refractive index from the medium with a low refractive index, thereby increasing the light emitted to the first refractive portion 911, improving the light extraction efficiency of the pixel there, and thus improving the display effect of the display panel 100. In some embodiments, the refractive index of the second inorganic film 62 provided in the embodiment of the present application may be the same as the refractive index of the first inorganic film 61.

[0073] refer to Fig.19, which is a schematic diagram of the structure of another display panel 100 provided in an embodiment of the present application, wherein the display panel 100 provided in an embodiment of the present application further includes: a second refractive layer 92, the second refractive layer 92 is located on the side of the first refractive layer 91 away from the substrate 10, wherein the refractive index of the second refractive layer 92 is less than the refractive index of the first refractive layer 91, thereby through the cooperation of the second inorganic film 62, the first refractive layer 91 and the second refractive layer 92, when the first part 41 emits light, the light extraction efficiency of the pixel there can be improved, thereby improving the display effect of the display panel 100. Specifically, Fig. 20 As shown, it is another optical path diagram provided by an embodiment of the present application, wherein: Fig.19 The dotted arrows indicate the light, wherein the light emitted from the first portion 41 is incident on the interface between the second inorganic film 62 and the first refractive portion 911. Since the refractive index of the second inorganic film 62 is lower than that of the first refractive portion 911, the total reflection will be reduced when the light enters the medium with a high refractive index from the medium with a low refractive index, thereby increasing the light emitted to the first refractive portion 911. In addition, since the light is refracted at the interface between the second inorganic film 62 and the first refractive portion 911, the light incident on the interface between the first refractive portion 911 and the second refractive layer 92 tends to the normal line there, reducing the light incident on the interface between the first refractive portion 911 and the second refractive layer 92 with a critical angle greater than or equal to the critical angle, thereby reducing the total reflection at the interface between the first refractive portion 911 and the second refractive layer 92, increasing the light emitted to the second refractive layer 92, and improving the light extraction efficiency of the pixels there, thereby improving the display effect of the display panel 100.

[0074] The second refractive layer 92 provided in the embodiment of the present application can be reused as an organic film layer in the packaging structure of the display panel 100. In order to avoid the formation of a water vapor erosion channel at the second refractive layer 92, the display panel 100 provided in the embodiment of the present application can also include a third inorganic film 63 covering the second refractive layer 92. Fig.21 , which is a schematic diagram of the structure of another display panel 100 provided in an embodiment of the present application, wherein the display panel 100 provided in an embodiment of the present application further includes: a third inorganic film 63, the third inorganic film 63 is located on the side of the second refractive layer 92 away from the substrate 10, and the refractive index of the third inorganic film 63 is less than the refractive index of the second refractive layer 92. It can be understood that the third inorganic film 63 provided in the embodiment of the present application covers the second refractive layer 92, and can cover and block the water vapor erosion channel formed at the second refractive layer 92, thereby improving the packaging reliability of the display panel 100. In addition, the refractive index of the third inorganic film 63 is optimized to be less than the refractive index of the second refractive layer 92, and the light is equivalent to being incident from a medium with a lower refractive index to a medium with a higher refractive index, thereby reducing the total reflection at the interface between the third inorganic film 63 and the second refractive layer 92 (refer to Fig.18 The principle of the medium with a lower refractive index incident on the medium with a higher refractive index is shown in the figure), so that the light emitted to the third inorganic film 63 can be increased, and the light extraction efficiency of the pixel therein can be improved, thereby improving the display effect of the display panel 100. Optionally, the structural layer for improving the light efficiency of the pixel provided in the embodiment of the present application can be a two-layer structure of the second inorganic film 62 and the first refractive layer 91; or it can be a three-layer structure of the second inorganic film 62, the first refractive layer 91 and the second refractive layer 92; or it can be a four-layer structure of the second inorganic film 62, the first refractive layer 91, the second refractive layer 92 and the third inorganic film 63; or more refractive layers can be provided to form more structural layers for improving the light efficiency of the pixel, and the present application does not make any specific restrictions on this.

[0075] In some embodiments, the refractive index difference between the first refractive portion 911 and the second refractive layer 92 provided in the embodiment of the present application can be set to different differences according to the wavelength of the first portion 41, so as to balance the light extraction efficiency of pixels of different colors and improve the light extraction uniformity of the display panel 100. Fig.18 As shown, the first part 41 provided in the embodiment of the present application includes at least a first color light part 411 and a second color light part 412, and the wavelength of the first color light part 411 is greater than the wavelength of the second color light part 412; the first refraction portion 911 corresponding to the first color light part 411 is a first color light refraction portion 911a, and the first refraction portion 911 corresponding to the second color light part 412 is a second color light refraction portion 911b; the difference between the refractive index of the first color light refraction portion 911a and the refractive index of the second inorganic film 62 is greater than the difference between the refractive index of the second color light refraction portion 911b and the refractive index of the second inorganic film 62. Since the light output efficiency of a pixel is positively correlated with the refractive index difference, that is, the greater the refractive index difference, the greater the light output efficiency, and vice versa, the smaller the refractive index difference, the smaller the light output efficiency, the refractive index difference between the different color light refraction parts and the second inorganic film 62 is set to be different, so that the light output efficiency of the pixels corresponding to the first color light part 411 and the pixels corresponding to the second color light part 412 can be balanced, thereby improving the light output uniformity of the display panel 100 and avoiding color deviation, thereby improving the display effect of the display panel 100.

[0076] That is to say, the wavelength of the first color light portion 411 provided in the embodiment of the present application is greater than the wavelength of the second color light portion 412. In order to improve the light extraction efficiency of the pixel corresponding to the first color light portion 411, so as to balance the light extraction efficiency of the pixel corresponding to the second color light portion 412, it is necessary to set the refractive index difference between the first color light refraction portion 911a and the second inorganic film 62 to be greater than the difference between the refractive index of the second color light refraction portion 911b and the refractive index of the second inorganic film 62; and because the refractive index of the first refraction layer 91 is greater than the refractive index of the second inorganic film 62, the greater the refractive index of the first refraction portion 911, the greater the difference in refractive index between the first refraction portion 911 and the second inorganic film 62. Therefore, the refractive index of the first color light refraction portion 911a provided in the embodiment of the present application is greater than the refractive index of the second color light refraction portion 911b, which increases the refractive index difference between the first color light refraction portion 911a and the second inorganic film 62, and improves the light extraction efficiency of the pixel corresponding to the first color light portion 411. Optionally, the first portion 41 provided in the embodiment of the present application may include a red light portion, a green light portion and a blue light portion. point, The red light portion corresponds to the first refraction portion 911 as a red light refraction portion, the green light portion corresponds to the first refraction portion 911 as a green light refraction portion, and the blue light portion corresponds to the first refraction portion 911 as a blue light refraction portion. The wavelength of the red light portion is greater than the wavelength of the green light portion, and the wavelength of the green light portion is greater than the wavelength of the blue light portion. Therefore, in order to balance the light extraction efficiency of the pixels corresponding to the red light portion, the green light portion, and the blue light portion, the embodiment of the present application can set the refractive index of the red light refraction portion to be greater than the refractive index of the blue light refraction portion and the green light refraction portion, and the refractive index of the green light refraction portion can be greater than the refractive index of the blue light refraction portion, or the refractive index of the green light refraction portion can be set to be equal to the refractive index of the blue light refraction portion, which needs to be specifically designed according to the actual application.

[0077] Based on the same inventive concept, the embodiment of the present application also provides an electronic device 1000. Fig. 22 As shown, it is a schematic diagram of the structure of an electronic device 1000 provided in an embodiment of the present application, wherein the electronic device 1000 provided in an embodiment of the present application includes the display panel 100 provided in any one of the above embodiments.

[0078] In some embodiments, the electronic device 1000 provided in the embodiments of the present application may be a mobile terminal, a notebook, a tablet computer, a computer, a wearable device, a vehicle-mounted display device, or the like, and the present application does not impose any specific restrictions on this.

[0079] In summary, the embodiments of the present application provide a display panel and an electronic device, wherein the display panel includes a substrate; an anode layer, the anode layer is located on the substrate, the anode layer includes a plurality of anode blocks; a first pixel definition layer, the first pixel definition layer is located on a side of the anode layer away from the substrate, the pixel definition layer includes a first pixel opening corresponding to the anode block; an electrode connection layer, the electrode connection layer is located on a side of the pixel definition layer away from the substrate, the electrode connection layer includes a second pixel opening corresponding to the first pixel opening; a second pixel definition layer, the second pixel definition layer is located on a side of the electrode connection layer away from the substrate, the second pixel definition layer The layer includes a third pixel opening corresponding to the second pixel opening; a light-emitting functional layer, the light-emitting functional layer includes a plurality of first parts and a plurality of second parts, the first part is at least located in the first pixel opening, and the second part at least covers the side wall of the third pixel opening; a cathode layer, the cathode layer includes a first cathode part and a second cathode part, the first cathode part covers the first part and extends to contact the electrode connection layer; a first inorganic film, the first inorganic film is located on the side of the cathode layer away from the substrate; a second inorganic film, the second inorganic film is located on the side of the first inorganic film away from the substrate, and the second inorganic film covers the first inorganic film.

[0080] As can be seen from the above content, the technical solution provided by the embodiment of the present application is that the display panel includes a superimposed structure of a first pixel definition layer, an electrode connection layer, and a second pixel definition layer. Based on the superimposed structure and the first pixel opening, the second pixel opening, and the third pixel opening formed by the superimposed structure, the light-emitting functional layer can be prepared without a fine metal mask, thereby not being subject to the related problems caused by the FMM process. In addition, the display panel also includes a second inorganic film covering the first inorganic film, so when a water vapor erosion channel appears at the first inorganic film, it can be covered and blocked by the second inorganic film, thereby reducing the risk of the display panel being susceptible to water vapor erosion and improving the packaging reliability of the display panel.

[0081] In the description of the embodiments of the present application, it needs to be understood that the orientation or position relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0082] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the embodiments of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0083] In the embodiments of the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0084] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0085] In the embodiments of the present application, if the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" appear, it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradicting each other.

[0086] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A display panel, characterized in that: include: substrate; an anode layer, the anode layer being located on the substrate and comprising a plurality of anode blocks; A first pixel definition layer, the first pixel definition layer is located on a side of the anode layer away from the substrate, the pixel definition layer comprising a first pixel opening corresponding to the anode block; an electrode connection layer, the electrode connection layer being located at a side of the pixel definition layer away from the substrate, the electrode connection layer comprising a second pixel opening corresponding to the first pixel opening; a second pixel definition layer, the second pixel definition layer being located on a side of the electrode connection layer away from the substrate, the second pixel definition layer comprising a third pixel opening corresponding to the second pixel opening; A light-emitting functional layer, the light-emitting functional layer comprising a plurality of first portions and a plurality of second portions, the first portions being at least located in the first pixel opening, and the second portions at least covering the sidewalls of the third pixel opening; a cathode layer, the cathode layer comprising a first cathode portion and a second cathode portion, the first cathode portion covering the first portion and extending to contact the electrode connection layer; a first inorganic film, wherein the first inorganic film is located on a side of the cathode layer facing away from the substrate; The second inorganic film is located on a side of the first inorganic film away from the substrate, and the second inorganic film covers the first inorganic film.

2. The display panel according to claim 1, characterized in that: The display panel comprises: an organic film located on a side of the second inorganic film facing away from the substrate, and a third inorganic film located on a side of the organic film facing away from the substrate.

3. The display panel according to claim 1, characterized in that: The first inorganic film includes a plurality of inorganic film blocks, and the inorganic film blocks cover the first cathode portion and extend to cover a side of the second cathode portion away from the second portion.

4. The display panel according to claim 1, characterized in that: The display panel comprises: a display area and a frame area surrounding at least a portion of the display area; The second inorganic film covers the display area and extends to cover the frame area.

5. The display panel according to claim 4, characterized in that: The frame area includes at least one retaining wall arranged in a direction surrounding the display area; The second inorganic film covers the display area and extends to cover outside the at least one retaining wall.

6. The display panel according to claim 1, characterized in that: The electrode connection layer exposes a surface of the first pixel definition layer facing away from the substrate; Furthermore, the second pixel definition layer faces the bottom surface of one side of the substrate and extends to the outside of the surface of the electrode connection layer facing away from the substrate.

7. The display panel according to claim 1, characterized in that: The display panel further includes: A color resist layer is located on a side of the second inorganic film away from the substrate, and the color resist layer includes a plurality of color resist portions, and the color resist portions are arranged corresponding to the first portion.

8. The display panel according to claim 7, characterized in that: The display panel further includes: an organic film, the organic film being located on a side of the second inorganic film away from the substrate; a third inorganic film, the third inorganic film being located on a side of the organic film away from the substrate; The color resist portion is located between the second inorganic film and the organic film.

9. The display panel according to claim 8, characterized in that: The second pixel definition layer is a black matrix.

10. The display panel according to claim 7, characterized in that: The display panel further includes: an organic film, the organic film being located on a side of the second inorganic film away from the substrate; a third inorganic film, the third inorganic film being located on a side of the organic film away from the substrate; The color resist portion is located on a side of the third inorganic film away from the substrate, and the display panel further includes a black matrix located on a side of the third inorganic film away from the substrate, and the black matrix surrounds the color resist portion.

11. The display panel according to claim 7, characterized in that: The first part includes at least a first color light part and a second color light part, and the wavelength of the first color light part is greater than the wavelength of the second color light part; The color resistance portion corresponding to the first color light portion is a first color light color resistance portion, and the color resistance portion corresponding to the second color light portion is a second color light color resistance portion; In a direction perpendicular to the plane where the display panel is located, the thickness of the first color light resist portion is greater than the thickness of the second color light resist portion.

12. The display panel according to claim 1, characterized in that: The display panel further includes: A first refraction layer, the first refraction layer is located on a side of the second inorganic film away from the substrate, the first refraction layer includes a plurality of first refraction parts, the first refraction parts are arranged corresponding to the first part, wherein the refractive index of the first refraction layer is different from the refractive index of the second inorganic film.

13. The display panel according to claim 12, characterized in that: The refractive index of the first refractive layer is greater than the refractive index of the second inorganic film.

14. The display panel according to claim 13, characterized in that: The display panel further includes: A second refractive layer, wherein the second refractive layer is located on a side of the first refractive layer away from the substrate, wherein a refractive index of the second refractive layer is smaller than a refractive index of the first refractive layer.

15. The display panel according to claim 13, characterized in that: The display panel further includes: a third inorganic film, the third inorganic film being located on a side of the second refractive layer away from the substrate; The refractive index of the third inorganic film is lower than the refractive index of the second refractive layer.

16. The display panel according to claim 12, characterized in that: The first part includes at least a first color light part and a second color light part, and the wavelength of the first color light part is greater than the wavelength of the second color light part; The first refraction portion corresponding to the first color light portion is a first color light refraction portion, and the first refraction portion corresponding to the second color light portion is a second color light refraction portion; A difference between a refractive index of the first color light refraction portion and a refractive index of the second inorganic film is greater than a difference between a refractive index of the second color light refraction portion and a refractive index of the second inorganic film.

17. The display panel according to claim 16, characterized in that: The refractive index of the first refractive layer is greater than the refractive index of the second inorganic film; The refractive index of the first color light refraction portion is greater than the refractive index of the second color light refraction portion.

18. The display panel according to claim 1, characterized in that: At least one inorganic film in the display panel is a SiOx film, a SiNx film, or a SiOx / SiNx stacked film.

19. An electronic device, characterized in that: The electronic device comprises the display panel according to any one of claims 1-18.

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