Display panel and display device

Abstract

The invention discloses a display panel and a display device.The display panel is provided with a first display area and a second display area, the light transmittance of the first display area is larger than that of the second display area, and the display panel comprises a substrate; the isolation structure is arranged on one side of the substrate and encloses 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 comprises first light-emitting structure layers arranged in the first isolation openings and second light-emitting structure layers arranged in the second isolation openings, more than two stacked first light-emitting structure layers are arranged in the same first isolation opening, and more than two stacked second light-emitting structure layers are arranged in the same second isolation opening; the number of the first light-emitting structure layers in the first isolation openings is larger than the number of the second light-emitting structure layers in the second isolation openings. The display panel disclosed by the embodiment of the invention has relatively small brightness difference.

Description

Technical Field

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

[0002] Organic Light Emitting Display (OLED) and flat-panel display devices based on technologies such as Light Emitting Diode (LED) have been widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc. due to their advantages such as high image quality, power saving, thin body and wide application range, becoming the mainstream in display devices.

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

[0004] Embodiments of the present application provide a display panel and a display device, aiming to reduce brightness differences of the display panel.

[0005] An embodiment of the first aspect of the present application provides a display panel, the display panel having a first display area and a second display area, the transmittance of the first display area is greater than the transmittance of the second display area, the display panel comprising: a substrate; an isolation structure, arranged on one side of the substrate and enclosing a plurality of isolation openings, the plurality of isolation openings comprising a first isolation opening located in the first display area and a second isolation opening located in the second display area; a light-emitting unit, comprising a first light-emitting structure layer arranged in the first isolation opening and a second light-emitting structure layer arranged in the second isolation opening, wherein two or more first light-emitting structure layers stacked in a same first isolation opening are arranged, 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 the present application, the display panel further includes a first charge generation layer located between two adjacent first light emitting structure layers that are stacked.

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

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

[0009] According to any of the aforementioned implementations of the first aspect of the present application, the isolation structure further encloses a penetrating light-transmitting opening.

[0010] According to any of the aforementioned implementations of the first aspect of the present application, the light-transmitting opening is located in the first display area.

[0011] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel also includes a connecting portion located at the light-transmitting opening, the material of at least part of the isolation structure includes a conductive material, and the connecting portion is used to electrically connect to the isolation structures located on at least two sides thereof.

[0012] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel further comprises a second electrode layer located on a side of the light-emitting unit facing away from the substrate, and the connecting portion and at least a portion of the second electrode layer are provided with the same material.

[0013] According to any of the aforementioned embodiments of the first aspect of the present application, the isolation structure includes a first isolation portion and a second isolation portion located on the side of the first isolation portion facing away from the substrate, and 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 aforementioned embodiments of the first aspect of the present 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 aforementioned embodiments of the first aspect of the present application, in the first isolation opening and the second isolation opening for accommodating light-emitting units of the same color, the orthographic projection area of ​​the first isolation opening on the substrate is smaller than the orthographic projection area of ​​the second isolation opening on the substrate.

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

[0017] According to any of the aforementioned embodiments of the first aspect of the present 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 aforementioned embodiments of the first aspect of the present 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 a second aspect of the present application provides a display device, which includes a display panel according to any of the above embodiments.

[0020] According to an implementation of the second aspect of the present application, the display device also includes a photosensitive component arranged on one side of the first display area.

[0021] In a display panel provided in an embodiment of the present application, the display panel has a first display area and a second display area, and the transmittance of the first display area is greater than the transmittance of the second display area, so that the photosensitive device is integrated on the back side of the first display area and obtains light information through the first display area. The display panel substrate, the isolation structure and the light-emitting unit, the isolation structure encloses the first isolation opening and the second isolation opening. The light-emitting unit is arranged in the first isolation opening and the second isolation opening to improve the light crosstalk problem between adjacent light-emitting units. The light-emitting unit includes a first light-emitting structure layer located in the first isolation opening and a second light-emitting structure layer located in the second isolation opening, and the number of the first light-emitting structure layer in the first isolation opening is greater than the number of the second light-emitting structure layer in the second isolation opening, which can improve the light-emitting brightness of the first display area, improve the brightness difference between the first display area and the second display area, and improve the display effect and performance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 is a schematic structural diagram of a display panel provided by an embodiment of the first aspect of the present application;

[0024] Figure 2 yes Figure 1 A schematic diagram of a local enlarged structure;

[0025] Figure 3 In one example Figure 2 Sectional view at AA in the middle;

[0026] Figure 4 is a structural schematic diagram of a first light-emitting structure of a display panel provided by an embodiment of the first aspect of the present application;

[0027] Figure 5 is a structural schematic diagram of a second light-emitting structure of a display panel provided by an embodiment of the first aspect of the present application;

[0028] Figure 6 In another example Figure 1 A schematic diagram of a local enlarged structure;

[0029] Figure 7 In another example Figure 1A schematic diagram of a local enlarged structure;

[0030] Figure 8 In another example Figure 2 Sectional view at AA in the middle;

[0031] Fig. 9 It is a structural schematic diagram of a display device provided in an embodiment of the first aspect of the present application.

[0032] Description of reference numerals:

[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 portion; 240, second isolation portion; 250, third isolation portion;

[0036] 300, light-emitting unit; 310, first light-emitting structure 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 structure 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 definition portion; 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 DESCRIPTION

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

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0044] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "on" or "over" another layer or another region, it may mean that it is directly on the other layer or another region, or that other layers or regions are included between it and the other layer or another region. Moreover, if the component is turned over, the layer or a region will be "below" or "beneath" another layer or another region.

[0045] Organic Light Emitting Display (OLED) and flat-panel display devices based on technologies such as Light Emitting Diode (LED) have been widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc. due to their advantages such as high image quality, power saving, thin body and wide application range, becoming the mainstream in display devices.

[0046] In the related art, in order to better realize the display function and photosensitivity function of the display device, the display panel in the display device is often divided into multiple display areas with different light transmittances, wherein the photosensitive component of the display device can be arranged under the display area with higher light transmittance in the display panel, so that the photosensitive component can receive or emit light information through the display panel. However, the display brightness of the display area with higher light transmittance is often lower than the display brightness of the display area with lower light transmittance, so that when the display panel is emitting light, different display intervals are prone to produce certain brightness differences, which reduces the display effect of the display panel.

[0047] In order to solve the above problems, embodiments of the present application provide a display panel and a display device. Various embodiments of the display panel and the display device will be described below in conjunction with the accompanying drawings.

[0048] Please also read Figures 1 to 3 , Figure 1 is a schematic structural diagram of a display panel provided by an embodiment of the first aspect of the present application, Figure 2 yes Figure 1 A local enlarged structural diagram of Figure 3 In one example Figure 2 Cross-sectional view at AA in the middle.

[0049] like Figures 1 to 3 As shown, an embodiment of the first aspect of the present application provides a display panel 10, the display panel 10 has a first display area AA1 and a second display area AA2, the transmittance of the first display area AA1 is greater than the transmittance 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 arranged on one side of the substrate 100 and encloses 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 212 located in the second display area AA2. Opening 212; the light-emitting unit 300 includes a first light-emitting structure layer 310 arranged in the first isolation opening 211 and a second light-emitting structure layer 320 arranged in the second isolation opening 212, and more than two stacked first light-emitting structure layers 310 are arranged in the same first isolation opening 211, wherein, in the first isolation opening 211 and the second isolation opening 212 for accommodating the light-emitting units 300 of the same color, the number of the first light-emitting structure layers 310 in the first isolation opening 211 is greater than the number of the 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 mean that the light-emitting colors of the light-emitting units 300 accommodated in the first isolation opening 211 and the second isolation opening 212 are the same. For example, the light-emitting units 300 accommodated in the first isolation opening 211 and the second isolation opening 212 are all red light-emitting units, or green light-emitting units, or blue light-emitting units.

[0051] Optionally, the plurality of first isolation openings 211 are distributed in an array along the first direction X and the second direction Y. Optionally, the plurality of second isolation openings 212 are distributed in an array along the first direction X and the second direction Y.

[0052] In a display panel 10 provided in an embodiment of the present application, the display panel 10 has a first display area AA1 and a second display area AA2, and the transmittance of the first display area AA1 is greater than the transmittance of the second display area AA2, so that the photosensitive device is integrated on the back side of the first display area AA1 and obtains light information through the first display area AA1. The display panel 10 substrate 100, the isolation structure 200 and the light-emitting unit 300, the isolation structure 200 encloses to form a first isolation opening 211 and a second isolation opening 212. The light-emitting unit 300 is disposed in the first isolation opening 211 and the second isolation opening 212 to improve 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, and for the same light-emitting color, the number of the first light-emitting structure layers 310 in the first isolation opening 211 is greater than the number of the second light-emitting structure layers 320 in the second isolation opening 212, which 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] There are many ways to set the substrate 100. The substrate 100 may include a substrate and a first conductive layer, a second conductive layer, and a third conductive layer that are arranged on one side of the substrate and are stacked. An insulating layer is provided between adjacent conductive layers. Exemplarily, the pixel driving circuit provided 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 plate and a second plate. As an example, the gate and the first plate may be located in the first conductive layer, the second plate may be located in the second conductive layer, and the source and the drain may be located in the third conductive layer.

[0054] There are many 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 equal cross-sections. The step difference formed at the edge of the isolation structure 200 can be used to disconnect the light-emitting material, thereby forming a plurality of light-emitting units 300 that are independent of each other, so as to omit the precision mask plate 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, and the orthographic projection of the first surface on the substrate 100 is located within the orthographic projection of the second surface on the substrate 100, that is, the size of the first surface is smaller than the size of the second surface, so that a concave can be formed under the second surface, which facilitates the light-emitting material to be broken into a plurality of light-emitting units 300 that are independent of each other at the location of the isolation structure 200, so as to omit the precision mask plate evaporation process.

[0055] Optionally, the display panel 10 further includes a pixel definition layer 400, the pixel definition layer 400 includes a pixel defining portion 410 and a plurality of pixel openings 420 enclosed by the pixel defining 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 on the substrate 100 is located within the orthographic projection of each first isolation opening 211 on the substrate 100, that is, each first pixel opening 421 is located within each first isolation opening 211, and the first light-emitting structure layer 310 can be located within the first pixel opening 421; the orthographic projection of each second pixel opening 422 on the substrate 100 is located within the orthographic projection of each second isolation opening 212 on the substrate 100, that is, each second pixel opening 422 is located within each second isolation opening 212, and the second light-emitting structure layer 320 can be located within the second pixel opening 422.

[0056] Optionally, the isolation structure 200 may be located on the side of the pixel defining portion 410 away from the substrate 100. Alternatively, a receiving groove is provided on the pixel defining portion 410, and the isolation structure 200 may be disposed in the receiving groove. Optionally, the receiving groove is provided through the pixel defining portion 410, and a portion of the substrate 100 is exposed from the receiving groove, and the isolation structure 200 may be disposed on the substrate 100 exposed by the receiving groove.

[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 the first electrode layer 500 includes a first electrode 510 located on the side of the first light-emitting structure layer 310 facing the substrate 100 and a third electrode 520 located 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 located on the side of the first light-emitting structure layer 310 facing away from the substrate 100 and a fourth electrode 620 located 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 to form a surface electrode, for example, the second electrode 610 and the fourth electrode 620 are interconnected to form a surface electrode through the isolation structure 200.

[0058] Optionally, one of the first electrode 510 and the third electrode 520 is an anode, and the other is a cathode. In the embodiment of the present application, the first electrode 510 is an anode and the third electrode 520 is a cathode for example. One of the second electrode 610 and the fourth electrode 620 is an anode, and the other is a cathode. In the embodiment of the present application, the second electrode 610 is an anode and the fourth electrode 620 is a cathode for example.

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

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

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

[0062] In some optional embodiments, among the multiple first light-emitting structure layers 310 arranged in 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, wherein, 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 that are stacked, 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 that are stacked.

[0063] That is to say, 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, and 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 multiple first light-emitting structure layers 310 disposed in the same first isolation opening 211, at least one first light-emitting structure layer 310 is a first inner structure layer, the first inner structure layer is located between the first outer structure layer and the second outer structure layer, and in the direction away from the substrate 100, the first inner structure layer includes a first hole transport layer 312, a first light-emitting layer 313, and a first electron transport layer 314 stacked. The first light-emitting structure layer 310 adjacent to the first charge generation layer 330 and located on the side of the first charge generation layer 330 facing the substrate 100 does not include an electron injection layer, and the first light-emitting structure layer 310 adjacent to the first charge generation layer 330 and located on the side of the first charge generation layer 330 away from the substrate 100 does not include a hole injection layer. The first light-emitting structure layer 310 located between two adjacent first charge generation layers 330 does not include an electron injection layer and a hole injection layer.

[0065] In some optional embodiments, please refer to Figures 1 to 5 One second light emitting structure layer 320 is disposed in the same second isolation opening 212 , and / or two or more stacked second light emitting structure layers 320 are disposed in the same second isolation opening 212 .

[0066] In these optional embodiments, a second light emitting structure layer 320 may be disposed in 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 the first light emitting structure layers 310 in the first isolation opening 211 is three or more, the number of the second light emitting structure layers 320 in 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 disposed in the same second isolation opening 212 , the display panel 10 further includes a second charge generation layer 340 located between two stacked and adjacent second light emitting structure layers 320 .

[0068] In these optional embodiments, when the number of the second light-emitting structure layers 320 in the same second isolation opening 212 is two or more, a second charge generating layer 340 is arranged between two adjacent second light-emitting structure layers 320, and the second charge generating layer 340 can serve as an electron injection layer of the second light-emitting structure layer 320 on the side facing the substrate 100, and the second charge generating layer 340 can also serve as a hole injection layer of the second light-emitting structure layer 320 on the side facing away from the substrate 100, so as to make the second light-emitting structure layers 320 located on both sides of the second charge generating layer 340 emit light and simplify the structure of the display panel 10.

[0069] The number of the second charge generation layer 340 may be one or more. For example, when the number of the second light-emitting structure layers 320 in the same second isolation opening 212 is two, the number of the second charge generation layer 340 may be one, and one second charge generation layer 340 is located between two stacked second light-emitting structure layers 320. Alternatively, when the number of the second light-emitting structure layers 320 in the same second isolation opening 212 is three or more, the number of the second charge generation layer 340 may be two or more, and the first charge generation layer 330 is disposed between any two adjacent stacked second light-emitting structure layers 320.

[0070] In some optional embodiments, among the multiple second light-emitting structure layers 320 arranged in 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, wherein, 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 that are stacked, 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 that are stacked.

[0071] That is to say, 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, and 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 multiple second light-emitting structure layers 320 disposed in the second isolation opening 212, at least one second light-emitting structure layer 320 is a second inner structure layer, the second inner structure layer is located between the third outer structure layer and the fourth outer structure layer, and in the direction away from the substrate 100, the second inner structure layer includes a second hole transport layer 322, a second light-emitting layer 323, and a second electron transport layer 324 stacked. In other words, the second light-emitting structure layer 320 adjacent to the second charge generation layer 340 and located on the side of the second charge generation layer 340 facing the substrate 100 does not include the second electron injection layer 325, and the second light-emitting structure layer 320 adjacent to the second charge generation layer 340 and located on the side of the second charge generation layer 340 away from the substrate 100 does not include a hole injection layer. The second light-emitting structure layer 320 located between the two first charge generation layers 330 does not include an electron injection layer and a hole injection layer.

[0073] In some optional embodiments, such as Figures 6 to 8 As shown, the isolation structure 200 is also surrounded by a through light-transmitting opening 220. The through light-transmitting opening 220 means that the light-transmitting opening 220 is set 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, between two adjacent second isolation openings 212, or between a first isolation opening 211 and a second isolation opening 212.

[0075] In some optional 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 obtains image information through the first display area AA1.

[0076] like Figure 6 As shown, the light-transmitting opening 220 may be in the shape of a strip. Figure 7 As shown, the light-transmitting openings 220 may be in a grid shape.

[0077] In some optional embodiments, the display panel 10 further includes a connection portion 700 located in the light-transmitting opening 220 , and the material of at least a portion of the isolation structure 200 includes a conductive material, and the connection portion 700 is used to electrically connect to the isolation structure 200 located at least on two sides thereof, so as to increase the distribution area of ​​the conductive material and reduce 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, and the connecting portion 700 and at least a portion of the second electrode layer 600 are made of the same material. The connecting portion 700 and at least a portion of the second electrode layer 600 can be formed in the same process step to simplify the manufacturing 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 connection portion 700 can be made of the same material as the second electrode 610 and / or the fourth electrode 620. Optionally, the connection portion 700, the second electrode 610 and the fourth electrode 620 are 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 facing away from the substrate 100 , and 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 optional embodiments, the size of the first isolation portion 230 is smaller than that of the second isolation portion 240, and a recess can be formed on the side of the second isolation portion 240 facing the substrate 100 to facilitate disconnection of the light-emitting material near the isolation structure 200 to form independent light-emitting units 300, thereby omitting the precision mask plate evaporation process.

[0082] In some optional embodiments, the display panel also includes a pixel defining portion 410, the first isolation portion 230 is arranged on the side of the pixel defining portion 410 facing away from the substrate 100, or the pixel defining portion 410 has a receiving groove recessed toward the side of the substrate 100, and the first isolation portion 230 is arranged 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, and the orthographic projection of the first isolation portion 230 on the substrate 100 is located within the orthographic projection of the third isolation portion 250 on the substrate 100. By providing the third isolation portion 250, the layer structure located on the side of the isolation structure 200 facing the substrate 100 can be more protected.

[0084] In some optional embodiments, in the first isolation opening 211 and the second isolation opening 212 for accommodating the 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 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 inner wall surface of the isolation structure 200 facing 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 inner wall surface of the isolation structure 200 facing the second isolation opening 212 on the substrate 100.

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

[0086] And / or, among the first electrode 510 and the third electrode 530 located on one side of the light emitting unit 300 of the same color, the orthographic projection area of ​​the first electrode 510 on the substrate 100 is smaller than the orthographic projection area of ​​the third electrode 520 on the substrate 100 to improve the 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 improve the effect of the slit formed between two adjacent first isolation openings 211 on the light output. Optionally, the orthographic projection of the first electrode 510 on the substrate 100 is circular to improve the effect of the slit formed between two adjacent first electrodes 510 on the light output.

[0089] Optionally, the orthographic projection of the second isolation openings 212 on the substrate 100 may be a polygon, for example, the orthographic projection of the second isolation openings 212 on the substrate 100 may be a square, so as to facilitate the arrangement of the second isolation openings 212 .

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

[0091] The display device in the embodiments of the present application includes but is not limited to mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, 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 obtain image information through the first display area AA1. Since the light transmittance of the first display area AA1 is relatively high, the accuracy of the image information obtained by the photosensitive element 20 can be improved.

[0093] According to the embodiments of the present application as above, these embodiments do not describe all the details in detail, nor do they limit the invention to specific embodiments. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can make good use of the present application and the modifications based on the present application. The present application is only limited by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized in that: The display panel has a first display area and a second display area, 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; An isolation structure, disposed on one side of the substrate and enclosing a plurality of isolation openings, wherein 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 comprises 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 stacked first light-emitting structure layers are disposed in the same first isolation opening, Among them, in the first isolation opening and the second isolation opening for accommodating 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.

2. The display panel according to claim 1, characterized in that: The display panel further includes a first charge generation layer located between two adjacent stacked first light emitting structure layers.

3. The display panel according to claim 1, characterized in that: One second light emitting structure layer is disposed in the same second isolation opening, and / or two or more stacked second light emitting structure layers are disposed in 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 disposed 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 isolation structure also encloses and forms a penetrating light-transmitting opening; Preferably, the light-transmitting opening is located in the first display area.

6. The display panel according to claim 5, characterized in that: The display panel further comprises a connecting portion located at the light-transmitting opening, wherein at least a portion of the isolation structure is made of a conductive material, and the connecting portion is used to electrically connect to the isolation structures located at at least two sides thereof; Preferably, the display panel further comprises a second electrode layer located on a 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.

7. The display panel according to claim 1, characterized in that: The isolation structure comprises a first isolation portion and a second isolation portion located on a side of the first isolation portion away from the substrate, wherein an orthographic projection of the first isolation portion on the substrate is located within an orthographic projection of the second isolation portion on the substrate; Preferably, the isolation structure further comprises a third isolation portion, the third isolation portion is located on a side of the first isolation portion facing the substrate, and an orthographic projection of the first isolation portion on the substrate is located within an 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 for accommodating the light-emitting units of the same color, the orthographic projection area of ​​the first isolation opening on the substrate is smaller than the orthographic projection area of ​​the second isolation opening on the substrate; And / or, in the light-emitting units of the same color, the orthographic projection area of ​​the first light-emitting structure layer on the substrate is smaller than the orthographic projection area of ​​the second light-emitting structure layer on the substrate; and / or, a distance between two adjacent first isolation openings is greater than a distance between two adjacent second isolation openings; Preferably, 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.

9. A display device, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 8.

10. The display device according to claim 9, characterized in that: The display device also includes a photosensitive component arranged on one side of the first display area.

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