Display panel and display device

Abstract

This application discloses a display panel and a display device. The display panel has a first display area and a second display area, wherein the light transmittance of the first display area is greater than that of the second display area. The display panel includes: a substrate; an isolation structure disposed on one side of the substrate and forming a first isolation opening in the first display area and a second isolation opening in the second display area; and a light-emitting unit including a first light-emitting structure layer disposed in the first isolation opening and a second light-emitting structure layer disposed in the second isolation opening. Two or more stacked first light-emitting structure layers are disposed in the same first isolation opening, and the number of first light-emitting structure layers in the first isolation opening is greater than the number of second light-emitting structure layers in the second isolation opening. The display panel disclosed in this application has a small brightness difference.

Description

Technical Field

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

[0002] Organic light-emitting diode (OLED) and flat panel display devices based on light-emitting diode (LED) technologies are widely used in various consumer electronics products such as mobile phones, televisions, laptops, and desktop computers due to their advantages such as high image quality, energy saving, thin body and wide range of applications, becoming the mainstream of display devices.

[0003] However, the performance of current OLED display products needs to be improved. Summary of the Invention

[0004] This application provides a display panel and a display device, which aim to reduce the brightness difference of the display panel.

[0005] An embodiment of the first aspect of this application provides a display panel having a first display area and a second display area, wherein the light transmittance of the first display area is greater than that of the second display area. The display panel includes: a substrate; an isolation structure disposed on one side of the substrate and forming a plurality of isolation openings, the plurality of isolation openings including a first isolation opening located in the first display area and a second isolation opening located in the second display area; and a light-emitting unit including a first light-emitting structure layer disposed in the first isolation opening and a second light-emitting structure layer disposed in the second isolation opening, wherein two or more first light-emitting structure layers are disposed in the same first isolation opening, wherein, in the first isolation opening and the second isolation opening for accommodating light-emitting units of the same color, the number of first light-emitting structure layers in the first isolation opening is greater than the number of second light-emitting structure layers in the second isolation opening.

[0006] According to an embodiment of the first aspect of this application, the display panel further includes a first charge generating layer located between two adjacent first light-emitting structure layers that are stacked together.

[0007] According to any of the foregoing embodiments of the first aspect of this application, a second light-emitting structure layer is provided in the same second isolation opening, and / or, two or more stacked second light-emitting structure layers are provided in the same second isolation opening.

[0008] According to any of the foregoing embodiments of the first aspect of this application, when two or more stacked second light-emitting structure layers are disposed in the same second isolation opening, the display panel further includes a second charge-generating layer disposed between two stacked and adjacent second light-emitting structure layers.

[0009] According to any of the foregoing embodiments of the first aspect of this application, the isolation structure further encloses a through-light-transmitting opening.

[0010] According to any of the foregoing embodiments of the first aspect of this application, the light-transmitting opening is located in the first display area.

[0011] According to any of the foregoing embodiments of the first aspect of this application, the display panel further includes a connecting portion located in the light-transmitting opening, and the material of at least a portion of the isolation structure includes a conductive material, the connecting portion being used to electrically connect with the isolation structures located at least on both sides thereof.

[0012] According to any of the foregoing embodiments of the first aspect of this application, the display panel further includes a second electrode layer located on the side of the light-emitting unit away from the substrate, and the connecting portion and at least a portion of the second electrode layer are made of the same material.

[0013] According to any of the foregoing embodiments of the first aspect of this application, the isolation structure includes a first isolation portion and a second isolation portion located on the side of the first isolation portion away from the substrate, wherein the orthographic projection of the first isolation portion on the substrate is located within the orthographic projection of the second isolation portion on the substrate.

[0014] According to any of the foregoing embodiments of the first aspect of this application, the isolation structure further includes a third isolation portion, which is located on the side of the first isolation portion facing the substrate, and the orthographic projection of the first isolation portion on the substrate is located within the orthographic projection of the third isolation portion on the substrate.

[0015] According to any of the foregoing embodiments of the first aspect of this application, in the first isolation opening and the second isolation opening used to accommodate light-emitting units of the same color, the orthogonal projection area of ​​the first isolation opening on the substrate is smaller than the orthogonal projection area of ​​the second isolation opening on the substrate.

[0016] According to any of the foregoing embodiments of the first aspect of this application, in light-emitting units of the same color, the projected area of ​​the first light-emitting structure layer on the substrate is smaller than the projected area of ​​the second light-emitting structure layer on the substrate.

[0017] According to any of the foregoing embodiments of the first aspect of this application, the distance between two adjacent first isolation openings is greater than the distance between two adjacent second isolation openings.

[0018] According to any of the foregoing embodiments of the first aspect of this application, the orthographic projection of the first isolation opening on the substrate is circular, and / or the orthographic projection of the second isolation opening on the substrate is polygonal.

[0019] An embodiment of the second aspect of this application provides a display device, which includes a display panel of any of the above embodiments.

[0020] According to an embodiment of the second aspect of this application, the display device further includes a photosensitive component disposed on one side of the first display area.

[0021] In a display panel provided in this application embodiment, the display panel has a first display area and a second display area. The light transmittance of the first display area is greater than that of the second display area, thereby facilitating the integration of a photosensitive device on the back side of the first display area and the acquisition of light information through the first display area. The display panel includes a substrate, an isolation structure, and light-emitting units. The isolation structure encloses a first isolation opening and a second isolation opening. The light-emitting units are disposed within the first and second isolation openings to improve the optical crosstalk problem between adjacent light-emitting units. Each light-emitting unit includes a first light-emitting structure layer located within the first isolation opening and a second light-emitting structure layer located within the second isolation opening. The number of first light-emitting structure layers within the first isolation opening is greater than the number of second light-emitting structure layers within the second isolation opening, which can improve the brightness of the first display area, reduce the brightness difference between the first and second display areas, and improve the display effect and performance of the display panel. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of a display panel provided in the first aspect embodiment of this application;

[0024] Figure 2 yes Figure 1 A partially enlarged structural diagram;

[0025] Figure 3 One example Figure 2 Sectional view at point AA;

[0026] Figure 4 This is a schematic diagram of the structure of a first light-emitting structure of a display panel provided in the first aspect embodiment of this application;

[0027] Figure 5 This is a schematic diagram of the structure of the second light-emitting structure of a display panel provided in the first aspect embodiment of this application;

[0028] Figure 6 In another example Figure 1 A partially enlarged structural diagram;

[0029] Figure 7 Is this another example? Figure 1A partially enlarged structural diagram;

[0030] Figure 8 In another example Figure 2 Sectional view at point AA;

[0031] Figure 9 This is a schematic diagram of the structure of a display device provided in the first aspect of this application.

[0032] Explanation of reference numerals in the attached figures:

[0033] 10. Display panel; 20. Photosensitive element;

[0034] 100. Substrate;

[0035] 200. Isolation structure; 210. Isolation opening; 211. First isolation opening; 212. Second isolation opening; 220. Light-transmitting opening; 230. First isolation section; 240. Second isolation section; 250. Third isolation section;

[0036] 300, Light-emitting unit; 310, First light-emitting structural layer; 311, First hole injection layer; 312, First hole transport layer; 313, First light-emitting layer; 314, First electron transport layer; 315, First electron injection layer; 320, Second light-emitting structural layer; 321, Second hole injection layer; 322, Second hole transport layer; 323, Second light-emitting layer; 324, Second electron transport layer; 325, Second electron injection layer; 330, First charge generation layer; 340, Second charge generation layer;

[0037] 400, Pixel definition layer; 410, Pixel limiting part; 420, Pixel opening; 421, First pixel opening; 422, Second pixel opening;

[0038] 500, First electrode layer; 510, First electrode; 520, Third electrode;

[0039] 600, Second electrode layer; 610, Second electrode; 620, Fourth electrode;

[0040] 700. Connecting part;

[0041] AA1, First display area; AA2, Second display area. Detailed Implementation

[0042] The features and exemplary embodiments of various aspects of this application will now be described in detail. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain this application and are not configured to limit this application. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples of this application.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0044] It should be understood that when describing the structure of a component, when referring to a layer or region as being "above" or "on top of" another layer or region, it can mean that it is directly above the other layer or region, or that it contains other layers or regions between it and the other layer or region. Furthermore, if the component is flipped over, that layer or region will be located "below" or "under" the other layer or region.

[0045] Organic light-emitting diode (OLED) and flat panel display devices based on light-emitting diode (LED) technologies are widely used in various consumer electronics products such as mobile phones, televisions, laptops, and desktop computers due to their advantages such as high image quality, energy saving, thin body and wide range of applications, becoming the mainstream of display devices.

[0046] In related technologies, to better realize the display and light-sensing functions of a display device, the display panel is often divided into multiple display areas with different light transmittances. The light-sensing component of the display device can be located under the display area with higher light transmittance, allowing it to receive or emit light information through the display panel. However, the display brightness of the higher-transmittance display area is often lower than that of the lower-transmittance display area. This causes brightness differences between different display areas when the display panel emits light, reducing the display effect.

[0047] To address the aforementioned problems, this application provides a display panel and a display device. The following description, in conjunction with the accompanying drawings, will illustrate various embodiments of the display panel and the display device.

[0048] Please refer to the following: Figures 1 to 3 , Figure 1 This is a schematic diagram of the structure of a display panel provided in the first aspect embodiment of this application. Figure 2 yes Figure 1 A partially enlarged structural diagram. Figure 3 One example Figure 2 Sectional view at point AA.

[0049] like Figures 1 to 3 As shown, an embodiment of the first aspect of this application provides a display panel 10, which has a first display area AA1 and a second display area AA2. The light transmittance of the first display area AA1 is greater than that of the second display area AA2. The display panel 10 includes a substrate 100, an isolation structure 200, and a light-emitting unit 300. The isolation structure 200 is disposed on one side of the substrate 100 and forms a plurality of isolation openings 210. The plurality of isolation openings 210 include a first isolation opening 211 located in the first display area AA1 and a second isolation opening 211 located in the second display area AA2. 212; The light-emitting unit 300 includes a first light-emitting structure layer 310 disposed in the first isolation opening 211 and a second light-emitting structure layer 320 disposed in the second isolation opening 212. Two or more first light-emitting structure layers 310 are disposed in the same first isolation opening 211. In the first isolation opening 211 and the second isolation opening 212 used to accommodate light-emitting units 300 of the same color, the number of first light-emitting structure layers 310 in the first isolation opening 211 is greater than the number of second light-emitting structure layers 320 in the second isolation opening 212.

[0050] Optionally, the light-emitting unit 300 includes a red light-emitting unit for emitting red light, a blue light-emitting unit for emitting blue light, and a green light-emitting unit for emitting green light. The first isolation opening 211 and the second isolation opening 212 for accommodating light-emitting units 300 of the same color refer to the fact that the light-emitting units 300 accommodated by the first isolation opening 211 and the second isolation opening 212 emit the same color light. For example, the light-emitting units 300 accommodated by the first isolation opening 211 and the second isolation opening 212 may all be red light-emitting units, or green light-emitting units, or blue light-emitting units.

[0051] Optionally, a plurality of first isolation openings 211 are arrayed along a first direction X and a second direction Y. Optionally, a plurality of second isolation openings 212 are arrayed along a first direction X and a second direction Y.

[0052] In a display panel 10 provided in this embodiment, the display panel 10 has a first display area AA1 and a second display area AA2. The light transmittance of the first display area AA1 is greater than that of the second display area AA2, thereby facilitating the integration of a photosensitive device on the back side of the first display area AA1 and the acquisition of light information through the first display area AA1. The display panel 10 includes a substrate 100, an isolation structure 200, and a light-emitting unit 300. The isolation structure 200 encloses a first isolation opening 211 and a second isolation opening 212. The light-emitting unit 300 is disposed within the first isolation opening 211 and the second isolation opening 212, improving the light crosstalk problem between adjacent light-emitting units 300. The light-emitting unit 300 includes a first light-emitting structure layer 310 located in the first isolation opening 211 and a second light-emitting structure layer 320 located in the second isolation opening 212. For the same light-emitting color, the number of first light-emitting structure layers 310 in the first isolation opening 211 is greater than the number of second light-emitting structure layers 320 in the second isolation opening 212. This can improve the light-emitting brightness of the first display area AA1, improve the brightness difference between the first display area AA1 and the second display area AA2, and improve the display effect and performance of the display panel 10.

[0053] The substrate 100 can be configured in various ways. The substrate 100 may include a substrate and a first conductive layer, a second conductive layer, and a third conductive layer stacked on one side of the substrate. An insulating layer is disposed between adjacent conductive layers. For example, a pixel driving circuit disposed on the array substrate 100 includes a transistor and a storage capacitor. The transistor includes a semiconductor, a gate, a source, and a drain. The storage capacitor includes a first electrode and a second electrode. As an example, the gate and the first electrode may be located on the first conductive layer, the second electrode may be located on the second conductive layer, and the source and drain may be located on the third conductive layer.

[0054] There are several ways to set the isolation structure 200. For example, along the thickness direction of the display panel 10, the isolation structure 200 can be set with a uniform cross section. By utilizing the step difference formed by the edge of the isolation structure 200, the light-emitting material can be broken, thereby forming multiple independent light-emitting units 300, thus eliminating the need for a precision mask evaporation process. Alternatively, the isolation structure 200 includes a first surface facing the substrate 100 and a second surface facing away from the substrate 100. The orthographic projection of the first surface onto the substrate 100 is located within the orthographic projection of the second surface onto the substrate 100, that is, the size of the first surface is smaller than the size of the second surface, so that a concave shape can be formed under the second surface, which facilitates the breaking of the light-emitting material into multiple independent light-emitting units 300 at the location of the isolation structure 200, thus eliminating the need for a precision mask evaporation process.

[0055] Optionally, the display panel 10 further includes a pixel definition layer 400. The pixel definition layer 400 includes a pixel limiting portion 410 and a plurality of pixel openings 420 formed by the pixel limiting portion 410. The plurality of pixel openings 420 include a first pixel opening 421 located in the first display area AA1 and a second pixel opening 422 located in the second display area AA2. The orthographic projection of each first pixel opening 421 onto the substrate 100 is located within the orthographic projection of each first isolation opening 211 onto the substrate 100, that is, each first pixel opening 421 is located within each first isolation opening 211. The first light-emitting structure layer 310 may be located within the first pixel opening 421. The orthographic projection of each second pixel opening 422 onto the substrate 100 is located within the orthographic projection of each second isolation opening 212 onto the substrate 100, that is, each second pixel opening 422 is located within each second isolation opening 212. The second light-emitting structure layer 320 may be located within the second pixel opening 422.

[0056] Optionally, the isolation structure 200 may be located on the side of the pixel limiting portion 410 facing away from the substrate 100. Alternatively, the pixel limiting portion 410 may have a receiving groove, and the isolation structure 200 may be disposed within the receiving groove. Optionally, the receiving groove may be disposed through the pixel limiting portion 410, with a portion of the substrate 100 exposed within the receiving groove, and the isolation structure 200 may be disposed on the exposed portion of the substrate 100.

[0057] Optionally, the display panel 10 further includes a first electrode layer 500 and a second electrode layer 600. The first electrode layer 500 is located on the side of the light-emitting unit 300 facing the substrate 100, and includes a first electrode 510 on the side of the first light-emitting structure layer 310 facing the substrate 100 and a third electrode 520 on the side of the second light-emitting structure layer 320 facing the substrate 100. The second electrode layer 600 includes a second electrode 610 on the side of the first light-emitting structure layer 310 facing away from the substrate 100 and a fourth electrode 620 on the side of the second light-emitting structure layer 320 facing away from the substrate 100. The first electrode 510 and the second electrode 610 are used to drive the first light-emitting structure layer 310 to emit light, and the second electrode 610 and the fourth electrode 620 are used to drive the second light-emitting structure layer 320 to emit light. Optionally, the second electrode 610 and the fourth electrode 620 can be interconnected as surface electrodes, for example, the second electrode 610 and the fourth electrode 620 can be interconnected as surface electrodes through an isolation structure 200.

[0058] Optionally, one of the first electrode 510 and the third electrode 520 may be an anode, and the other a cathode. This embodiment of the application illustrates this with the first electrode 510 as the anode and the third electrode 520 as the cathode. Similarly, one of the second electrode 610 and the fourth electrode 620 may be an anode, and the other a cathode. This embodiment of the application illustrates this with the second electrode 610 as the anode and the fourth electrode 620 as the cathode.

[0059] In some alternative embodiments, such as Figures 1 to 4 As shown, the display panel 10 also includes a first charge generation layer 330 located between two adjacent first light-emitting structure layers 310 that are stacked together.

[0060] In these optional embodiments, a first charge generation layer 330 is provided between two adjacent first light-emitting structure layers 310 stacked together. The first charge generation layer 330 can serve as an electron injection layer for the first light-emitting structure layer 310 on the side facing the substrate 100, and can also serve as a hole injection layer for the first light-emitting structure layer 310 on the side facing away from the substrate 100, so that the first light-emitting structure layers 310 on both sides of the first charge generation layer 330 emit light, and the structure of the display panel 10 can be simplified.

[0061] The number of first charge generating layers 330 can be one or more. For example, when there are two first light-emitting structure layers 310 within the same first isolation opening 211, the number of first charge generating layers 330 can be one, and one first charge generating layer 330 is located between the two stacked first light-emitting structure layers 310. Alternatively, when there are three or more first light-emitting structure layers 310 within the same isolation opening 210, the number of first charge generating layers 330 can be two or more, and a first charge generating layer 330 is provided between any two adjacent stacked first light-emitting structure layers 310.

[0062] In some optional embodiments, among the plurality of first light-emitting structure layers 310 disposed within the same first isolation opening 211, the first light-emitting structure layer 310 adjacent to the first electrode 510 is a first outer structure layer, and the first light-emitting structure layer 310 adjacent to the second electrode 610 is a second outer structure layer. In the direction away from the substrate 100, the first outer structure layer includes a first hole injection layer 311, a first hole transport layer 312, a first light-emitting layer 313, and a first electron transport layer 314 stacked together, and / or, in the direction away from the substrate 100, the second outer structure layer includes a first hole transport layer 312, a first light-emitting layer 313, a first electron transport layer 314, and a first electron injection layer 315 stacked together.

[0063] In other words, among the multiple first light-emitting structure layers 310 within the same first isolation opening 211, the first light-emitting structure layer 310 adjacent to the first electrode 510 includes a hole injection layer but does not include an electron injection layer, and its electron injection layer can be reused by the first charge generation layer 330; the first light-emitting structure layer 310 adjacent to the second electrode 610 includes an electron injection layer but does not include a hole injection layer, and its hole injection layer can be reused by the first charge generation layer 330.

[0064] In some optional embodiments, among the plurality of first light-emitting structural layers 310 disposed within the same first isolation opening 211, at least one first light-emitting structural layer 310 is a first inner structural layer, located between the first outer structural layer and the second outer structural layer. In the direction away from the substrate 100, the first inner structural layer includes a first hole transport layer 312, a first light-emitting layer 313, and a first electron transport layer 314 stacked together. The first light-emitting structural layer 310 adjacent to the first charge-generating layer 330 and located on the side of the first charge-generating layer 330 facing the substrate 100 does not include an electron injection layer. The first light-emitting structural layer 310 adjacent to the first charge-generating layer 330 and located on the side of the first charge-generating layer 330 away from the substrate 100 does not include a hole injection layer. The first light-emitting structural layer 310 located between two adjacent first charge-generating layers 330 does not include an electron injection layer or a hole injection layer.

[0065] In some alternative embodiments, please refer to the following: Figures 1 to 5 A second light-emitting structure layer 320 is provided within the same second isolation opening 212, and / or two or more stacked second light-emitting structure layers 320 are provided within the same second isolation opening 212.

[0066] In these optional embodiments, a second light-emitting structure layer 320 may be provided within the second isolation opening 212 to reduce the display difference between the first display area AA1 and the second display area AA2. Alternatively, when the number of first light-emitting structure layers 310 within the first isolation opening 211 is three or more, the number of second light-emitting structure layers 320 within the second isolation opening 212 may be two or more to improve the display brightness of the second display area AA2.

[0067] In some optional embodiments, when two or more stacked second light-emitting structure layers 320 are provided in the same second isolation opening 212, the display panel 10 further includes a second charge-generating layer 340 located between two stacked and adjacent second light-emitting structure layers 320.

[0068] In these optional embodiments, when there are two or more second light-emitting structure layers 320 within the same second isolation opening 212, a second charge-generating layer 340 is provided between two adjacent second light-emitting structure layers 320. The second charge-generating layer 340 can serve as an electron injection layer for the second light-emitting structure layer 320 on the side facing the substrate 100, and can also serve as a hole injection layer for the second light-emitting structure layer 320 on the side facing away from the substrate 100, so that the second light-emitting structure layers 320 on both sides of the second charge-generating layer 340 emit light, and the structure of the display panel 10 can be simplified.

[0069] The number of second charge generating layers 340 can be one or more. For example, when there are two second light-emitting structure layers 320 within the same second isolation opening 212, the number of second charge generating layers 340 can be one, with one second charge generating layer 340 located between the two stacked second light-emitting structure layers 320. Alternatively, when there are three or more second light-emitting structure layers 320 within the same second isolation opening 212, the number of second charge generating layers 340 can be two or more, with a first charge generating layer 330 provided between any two adjacent stacked second light-emitting structure layers 320.

[0070] In some optional embodiments, among the plurality of second light-emitting structure layers 320 disposed within the same second isolation opening 212, the second light-emitting structure layer 320 adjacent to the third electrode 520 is a third outer structure layer, and the second light-emitting unit 300 adjacent to the fourth electrode 620 is a fourth outer structure layer. In the direction away from the substrate 100, the third outer structure layer includes a second hole injection layer 321, a second hole transport layer 322, a second light-emitting layer 323, and a second electron transport layer 324 stacked together, and / or, in the direction away from the substrate 100, the fourth outer structure layer includes a second hole transport layer 322, a second light-emitting layer 323, a second electron transport layer 324, and a second electron injection layer 325 stacked together.

[0071] In other words, in the second light-emitting structure layer 320 within the same second isolation opening 212, the second light-emitting structure layer 320 adjacent to the third electrode 520 includes a hole injection layer but does not include an electron injection layer, and the electron injection layer is reused by the second charge generation layer 340; the second light-emitting structure layer 320 adjacent to the fourth electrode 620 includes an electron injection layer but does not include a hole injection layer, and its hole injection layer is reused by the second charge generation layer 340.

[0072] In some optional embodiments, among the plurality of second light-emitting structural layers 320 disposed within the second isolation opening 212, at least one second light-emitting structural layer 320 is a second inner structural layer. This second inner structural layer is located between the third and fourth outer structural layers. In the direction away from the substrate 100, the second inner structural layer includes a second hole transport layer 322, a second light-emitting layer 323, and a second electron transport layer 324 stacked together. That is, the second light-emitting structural layer 320 adjacent to the second charge-generating layer 340 and located on the side of the second charge-generating layer 340 facing the substrate 100 does not include a second electron injection layer 325, and the second light-emitting structural layer 320 adjacent to the second charge-generating layer 340 and located on the side of the second charge-generating layer 340 away from the substrate 100 does not include a hole injection layer. The second light-emitting structural layer 320 located between the two first charge-generating layers 330 does not include an electron injection layer or a hole injection layer.

[0073] In some alternative embodiments, such as Figures 6 to 8 As shown, the isolation structure 200 also encloses a through-hole light-transmitting opening 220. The through-hole light-transmitting opening 220 means that the light-transmitting opening 220 passes through the isolation structure 200. By setting the light-transmitting opening 220, the light transmittance of the display panel 10 can be improved, which facilitates the under-screen integration of the photosensitive element.

[0074] Optionally, on a reference plane parallel to the display surface of the display panel, the light-transmitting opening 220 is located between two adjacent isolation openings 210. For example, the light-transmitting opening 220 is located between two adjacent first isolation openings 211, two adjacent second isolation openings 212, or between adjacent first isolation openings 211 and second isolation openings 212.

[0075] In some alternative embodiments, such as Figure 7 As shown, the light-transmitting opening 220 is located in the first display area AA1 to improve the light transmittance of the first display area AA1, so that the photosensitive element can acquire image information through the first display area AA1.

[0076] like Figure 6 As shown, the light-transmitting opening 220 can be strip-shaped. Or as... Figure 7 As shown, the light-transmitting opening 220 can be in the form of a grid.

[0077] In some optional embodiments, the display panel 10 further includes a connection portion 700 located in the light-transmitting opening 220. At least a portion of the isolation structure 200 is made of a conductive material, and the connection portion 700 is used for electrical connection with the isolation structures 200 located on at least both sides thereof. This increases the distribution area of ​​the conductive material and reduces the resistance of the second electrode layer 600.

[0078] Optionally, as described above, the display panel 10 further includes a second electrode layer 600 located on the side of the light-emitting unit 300 facing away from the substrate 100, with the connecting portion 700 and at least a portion of the second electrode layer 600 being made of the same material. This allows the connecting portion 700 and at least a portion of the second electrode layer 600 to be fabricated in the same process step, thereby simplifying the fabrication process of the display panel 10.

[0079] Optionally, the second electrode layer 600 includes a second electrode 610 and a fourth electrode 620, and the connecting portion 700 may be made of the same material as the second electrode 610 and / or the fourth electrode 620. Optionally, the connecting portion 700, the second electrode 610, and the fourth electrode 620 may be made of the same material to further simplify the manufacturing process of the display panel 10.

[0080] In some optional embodiments, the isolation structure 200 includes a first isolation portion 230 and a second isolation portion 240 located on the side of the first isolation portion 230 away from the substrate 100, wherein the orthographic projection of the first isolation portion 230 on the substrate 100 is located within the orthographic projection of the second isolation portion 240 on the substrate 100.

[0081] In these alternative embodiments, the size of the first isolation portion 230 is smaller than that of the second isolation portion 240. The second isolation portion 240 can be recessed on the side facing the substrate 100, which facilitates the light-emitting material to be disconnected from the isolation structure 200 to form independent light-emitting units 300, thus eliminating the need for a precision mask evaporation process.

[0082] In some alternative embodiments, the display panel further includes a pixel defining portion 410, with a first isolation portion 230 disposed on the side of the pixel defining portion 410 away from the substrate 100, or the pixel defining portion 410 has a receiving groove recessed toward the substrate 100, with the first isolation portion 230 disposed in the receiving groove.

[0083] Optionally, the isolation structure 200 further includes a third isolation portion 250, which is located on the side of the first isolation portion 230 facing the substrate 100. The orthographic projection of the first isolation portion 230 onto the substrate 100 lies within the orthographic projection of the third isolation portion 250 onto the substrate 100. By providing the third isolation portion 250, protection can be improved for the layer structure located on the side of the isolation structure 200 facing the substrate 100.

[0084] In some optional embodiments, in the first isolation opening 211 and the second isolation opening 212 used to accommodate light-emitting units 300 of the same color, the orthographic projection area of ​​the first isolation opening 211 on the substrate 100 is smaller than the orthographic projection area of ​​the second isolation opening 212 on the substrate 100, so as to reduce the distribution area of ​​the first light-emitting structure layer 310 and improve the light transmittance of the first display area AA1. The orthographic projection area of ​​the first isolation opening 211 on the substrate 100 refers to the area enclosed by the orthographic projection of the isolation structure 200 toward the inner wall surface of the first isolation opening 211 on the substrate 100. The orthographic projection area of ​​the second isolation opening 212 on the substrate 100 refers to the area enclosed by the orthographic projection of the isolation structure 200 toward the inner wall surface of the second isolation opening 212 on the substrate 100.

[0085] And / or, in the light-emitting units 300 of the same color, the projected area of ​​the first light-emitting structure layer 310 on the substrate 100 is smaller than the projected area of ​​the second light-emitting structure layer 320 on the substrate 100, so as to improve the light transmittance of the first display area AA1.

[0086] And / or, in the first electrode 510 and the third electrode 530 located on the same side of the light-emitting unit 300 of the same color, the projected area of ​​the first electrode 510 on the substrate 100 is smaller than the projected area of ​​the third electrode 520 on the substrate 100, so as to improve the light transmittance of the first display area AA1.

[0087] And / or, the distance between two adjacent first isolation openings 211 is greater than the distance between two adjacent second isolation openings 212, so as to improve the light transmittance of the first display area AA1.

[0088] Optionally, the orthographic projection of the first isolation opening 211 on the substrate 100 is circular to mitigate the impact of the slit formed between two adjacent first isolation openings 211 on light emission. Optionally, the orthographic projection of the first electrode 510 on the substrate 100 is circular to mitigate the impact of the slit formed between two adjacent first electrodes 510 on light emission.

[0089] Optionally, the orthographic projection of the second isolation opening 212 on the substrate 100 may be polygonal, for example, the orthographic projection of the second isolation opening 212 on the substrate 100 may be square, thereby facilitating the arrangement of the second isolation opening 212.

[0090] like Figure 9 As shown, an embodiment of the second aspect of this application provides a display device, which includes the display panel 10 of any of the above embodiments. Since the display device provided by the second aspect of this application includes the display panel 10 of any of the first aspects, the display device provided by the second aspect of this application has the beneficial effects of the display panel 10 of any of the first aspects, which will not be repeated here.

[0091] The display devices in this application include, but are not limited to, mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, control consoles, and other devices with display functions.

[0092] In some optional embodiments, the display device further includes a photosensitive element 20 disposed on one side of the first display area AA1. The photosensitive element 20 is used to acquire image information through the first display area AA1. Since the first display area AA1 has high light transmittance, the accuracy of the image information acquired by the photosensitive element 20 can be improved.

[0093] The embodiments described above are not exhaustive and do not limit the invention to specific examples. Clearly, many modifications and variations can be made based on the above description. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of this application, thereby enabling those skilled in the art to effectively utilize this application and its modifications. This application is limited only by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized by, The display panel has a first display area and a second display area, wherein the light transmittance of the first display area is greater than the light transmittance of the second display area, and the display panel includes: substrate; A pixel definition layer is disposed on one side of the substrate, the pixel definition layer including a pixel defining portion and a plurality of pixel openings formed by the pixel defining portion; An isolation structure is disposed on one side of the substrate and encloses a plurality of isolation openings. The isolation structure is located on the side of the pixel defining portion away from the substrate. Alternatively, a receiving groove is formed on the pixel defining portion, and the isolation structure is disposed in the receiving groove. The plurality of isolation openings include a first isolation opening located in the first display area and a second isolation opening located in the second display area. The light-emitting unit includes a first light-emitting structure layer disposed within the first isolation opening and a second light-emitting structure layer disposed within the second isolation opening. Two or more first light-emitting structure layers are stacked within the same first isolation opening. Wherein, in the first isolation opening and the second isolation opening used to accommodate the light-emitting units of the same color, the number of the first light-emitting structure layers in the first isolation opening is greater than the number of the second light-emitting structure layers in the second isolation opening; The isolation structure also encloses a through-hole light-transmitting opening located in the first display area. The display panel further includes a connecting portion located in the light-transmitting opening. At least a portion of the isolation structure is made of a conductive material. The connecting portion is used to electrically connect with the isolation structure located on at least two sides thereof.

2. The display panel of claim 1, wherein, The display panel also includes a first charge generation layer located between two adjacent first light-emitting structure layers that are stacked together.

3. The display panel of claim 1, wherein, A second light-emitting structure layer is disposed within the same second isolation opening, and / or two or more stacked second light-emitting structure layers are disposed within the same second isolation opening.

4. The display panel according to claim 3, characterized in that, When two or more stacked second light-emitting structure layers are provided in the same second isolation opening, the display panel further includes a second charge-generating layer located between two stacked and adjacent second light-emitting structure layers.

5. The display panel according to claim 1, characterized in that, The display panel also includes a second electrode layer located on the side of the light-emitting unit opposite to the substrate, and the connecting portion and at least a portion of the second electrode layer are made of the same material.

6. The display panel according to claim 1, characterized in that, The isolation structure includes a first isolation portion and a second isolation portion located on the side of the first isolation portion away from the substrate, wherein the orthographic projection of the first isolation portion on the substrate is located within the orthographic projection of the second isolation portion on the substrate.

7. The display panel of claim 6, wherein, The isolation structure further includes a third isolation portion located on the side of the first isolation portion facing the substrate, wherein the orthographic projection of the first isolation portion on the substrate is within the orthographic projection of the third isolation portion on the substrate.

8. The display panel according to any one of claims 1 to 7, characterized in that, In the first isolation opening and the second isolation opening used to accommodate the light-emitting units of the same color, the projected area of ​​the first isolation opening on the substrate is smaller than the projected area of ​​the second isolation opening on the substrate. And / or, in the light-emitting units of the same color, the projected area of ​​the first light-emitting structure layer on the substrate is smaller than the projected area of ​​the second light-emitting structure layer on the substrate. And / or, the distance between two adjacent first isolation openings is greater than the distance between two adjacent second isolation openings.

9. The display panel of claim 8, wherein, The first isolation opening has a circular orthographic projection on the substrate, and / or the second isolation opening has a polygonal orthographic projection on the substrate.

10. A display device, characterized by comprising: Includes the display panel as described in any one of claims 1 to 9.

11. The display device according to claim 10, wherein The display device further includes a photosensitive component disposed on one side of the first display area.

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