Display panel and display device

Abstract

The present disclosure provides a display panel and a display device, relating to the field of display technologies. The display panel provided by the present disclosure includes a first display area and a second display area, and the light transmittance of the second display area is greater than that of the first display area. The display panel includes: a substrate; a pixel layer disposed on one side of the substrate; the pixel layer is provided with sub-pixels; the sub-pixels include first sub-pixels disposed in the second display area; a touch control function layer disposed on the side of the pixel layer away from the substrate; a light extraction layer disposed on the surface of the touch control function layer away from the substrate; the light extraction layer includes convex lens structures disposed in the second display area, and each convex lens structure is overlapped with each first sub-pixel in a one-to-one correspondence; an organic layer disposed on the surface of the light extraction layer away from the substrate and covering at least the display area. The display panel provided by the present disclosure can improve the lifespan of the sub-pixels in the second display area.

Description

Technical Field

[0001] The present disclosure relates to the field of display technologies, and more particularly, to a display panel and a display device. Background Art

[0002] In an under-screen camera display device, a camera is disposed below a display area of an OLED display panel. In the display area corresponding to the camera, the OLED display panel needs to maintain a high light transmittance and achieve a good display effect. However, the lifespan of sub-pixels in the camera area is low; as the usage time increases, there will be a relatively obvious brightness and color difference between the display area in the camera area and the main display area, reducing the user experience.

[0003] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present disclosure, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0004] An object of the present disclosure is to overcome the deficiencies of the above prior art, and to provide a display panel and a display device, which can improve the lifespan of sub-pixels in a second display area corresponding to a camera.

[0005] According to one aspect of the present disclosure, there is provided a display panel, including a first display area and a second display area, the light transmittance of the second display area being greater than that of the first display area; the display panel includes:

[0006] A substrate;

[0007] A pixel layer disposed on one side of the substrate; the pixel layer is provided with sub-pixels; the sub-pixels include first sub-pixels disposed in the second display area;

[0008] A touch function layer disposed on the side of the pixel layer away from the substrate;

[0009] A light extraction layer disposed on the surface of the touch function layer away from the substrate; the light extraction layer includes convex lens structures disposed in the second display area, and each of the convex lens structures is overlapped with each of the first sub-pixels in a one-to-one correspondence;

[0010] An organic layer disposed on the surface of the light extraction layer away from the substrate, and covering at least the display area.

[0011] In an embodiment of the present disclosure, the touch function layer includes a touch trace layer, an inorganic dielectric layer, and a touch electrode layer that are sequentially stacked on the side of the pixel layer away from the substrate; the touch electrode layer is formed with touch electrodes and exposes at least a part of the inorganic dielectric layer;

[0012] At least part of the convex lens structure is disposed on the surface of the inorganic dielectric layer away from the substrate, and the refractive index of the convex lens structure is greater than or equal to the refractive index of the inorganic dielectric layer.

[0013] In an embodiment of the present disclosure, the orthographic projection of the convex lens structure on the substrate covers the orthographic projection of the corresponding sub-pixel on the substrate.

[0014] In an embodiment of the present disclosure, the orthographic projection of the center of the convex lens structure on the substrate coincides with the orthographic projection of the center of the corresponding sub-pixel on the substrate.

[0015] In an embodiment of the present disclosure, the organic layer covers the surface of the convex lens structure away from the substrate; the refractive index of the organic layer is less than the refractive index of the convex lens structure.

[0016] In an embodiment of the present disclosure, the refractive index of the convex lens structure is in the range of 1.6 to 1.8.

[0017] In an embodiment of the present disclosure, the material of the convex lens structure is silicon nitride and / or zirconia.

[0018] In an embodiment of the present disclosure, the convex lens structure is also distributed in the first display area; the first sub-pixel is also distributed in the first display area;

[0019] In the first display area, each of the first sub-pixels and each of the first convex lens structures are overlapped and arranged in one-to-one correspondence.

[0020] In an embodiment of the present disclosure, the first sub-pixel is a blue sub-pixel.

[0021] In an embodiment of the present disclosure, the distribution density of the sub-pixels in the first display area and the second display area is the same.

[0022] In an embodiment of the present disclosure, among the sub-pixels that emit the same color light, the light-emitting area of the sub-pixels located in the first display area is larger than the light-emitting area of the sub-pixels located in the second display area.

[0023] In an embodiment of the present disclosure, the sub-pixel further includes a second sub-pixel and a third sub-pixel located in the second display area; the convex lens structure is overlapped and arranged in one-to-one correspondence with each of the second sub-pixels and the third sub-pixels.

[0024] In an embodiment of the present disclosure, the second sub-pixel and the third sub-pixel are also distributed in the first display area; the convex lens structure is also distributed in the first display area;

[0025] In the first display area, a corresponding convex lens structure is provided for each of the second sub-pixels and each of the third sub-pixels.

[0026] In an embodiment of the present disclosure, the convex lens structure is a plano-convex lens structure, and the organic layer covers the convex surface of the convex lens structure.

[0027] According to another aspect of the present disclosure, a display device is provided, including the above-mentioned display panel and a camera, where the camera is located below the display panel and corresponds to the second display area.

[0028] In the display panel and the display device provided by the present disclosure, in the second display area, by providing a convex lens structure overlapping with the first sub-pixel between the touch function layer and the organic layer, it is possible to make part of the light (emitted by the first sub-pixel) that should have been totally reflected at the interface between the touch function layer and the organic layer enter the convex lens structure, and be emitted to the organic layer through the convex lens structure, thereby reducing the light loss from the touch function layer to the organic layer, increasing the proportion of the emitted light, and increasing the light extraction rate of the first sub-pixel located in the second display area. In this way, the display panel of the present disclosure can use a lower driving current to increase the light emission brightness of the first sub-pixel in the second display area, thereby slowing down the aging speed of the first sub-pixel in the second display area, and further improving the brightness and color uniformity of the first display area and the second display area under long-term use.

[0029] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure. Obviously, the accompanying drawings in the following description are only some embodiments of the present disclosure, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0031] Figure 1 It is a schematic structural diagram of a display panel in an embodiment of the present disclosure.

[0032] Figure 2 It is a schematic structural diagram of a display panel in another embodiment of the present disclosure.

[0033] Figure 3 It is a schematic cross-sectional structural diagram of a display panel in an embodiment of the present disclosure.

[0034] Figure 4Schematic cross-sectional structure diagram of a display panel in another embodiment of the present disclosure.

[0035] Figure 5 Schematic cross-sectional structure diagram of a display panel in the related art.

[0036] Figure 6 Schematic structure diagram of a display panel in an embodiment of the present disclosure.

[0037] Figure 7 Schematic cross-sectional structure diagram of a display panel in an embodiment of the present disclosure.

[0038] Figure 8 Schematic cross-sectional structure diagram of a display panel in another embodiment of the present disclosure.

[0039] Figure 9 Schematic cross-sectional structure diagram of a display panel in yet another embodiment of the present disclosure.

[0040] Figure 10 Schematic cross-sectional structure diagram of a display panel in still another embodiment of the present disclosure.

[0041] Description of reference numerals:

[0042] PNL, display panel; AA, display area; A1, first display area; A2, second display area; BB, peripheral area; B1, bonding area; C100, pixel driving circuit; C101, first pixel driving circuit; C102, second pixel driving circuit; C200, light-emitting element; C201, first light-emitting element; C202, second light-emitting element; C300, photosensitive component; F300D1, pixel electrode; F300D11, electrode body; F300D12, electrode extension lead; LENS, convex lens structure; LENS1, first convex lens structure; LENS2, second convex lens structure; LENS3, third convex lens structure; SubP, sub-pixel; SubP1, first sub-pixel; SubP2, second sub-pixel; SubP3, third sub-pixel; F100, substrate; F200, driving circuit layer; F200M, transistor; F201, buffer material layer; F203, semiconductor layer; F204, gate insulating layer; F205, gate layer; F206, interlayer dielectric layer; F207, source-drain metal layer; F208, planarization layer; F300, pixel layer; F301, pixel electrode layer; F302, pixel definition layer; F303, support pillar layer; F304, organic light-emitting functional layer; F305, common electrode layer; F400, thin film encapsulation layer; F401, first inorganic encapsulation layer; F402, organic encapsulation layer; F403, second inorganic encapsulation layer; F500, touch function layer; F501, touch buffer layer; F502, touch wiring layer; F503, inorganic dielectric layer; F504, touch electrode layer; F600, light extraction layer; F700, organic layer. Detailed implementation manners

[0043] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. Like reference numerals in the figures denote like or similar structures, and thus their detailed descriptions will be omitted. In addition, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0044] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of an icon to another component, these terms are used in this specification only for convenience, for example, according to the directions of the examples described in the drawings. It can be understood that if the device of the icon is flipped so that it is upside down, the component described as "upper" will become the component described as "lower". When a structure is "on" another structure, it may mean that a structure is integrally formed on another structure, or that a structure is "directly" disposed on another structure, or that a structure is "indirectly" disposed on another structure through another structure.

[0045] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "comprising" and "having" are used to mean an open inclusion and mean that there may be additional elements / components / etc. in addition to the listed elements / components / etc.; the terms "first", "second", "third", etc. are used only as labels and are not a limitation on the quantity of their objects.

[0046] Figure 1 and Figure 2 is a top view structural schematic diagram of a display panel PNL provided for the present disclosure. Refer to Figure 1 and Figure 2 , the display panel PNL may include a display area AA and a peripheral area BB surrounding the display area AA. Among them, the display area AA may include a first display area A1 and at least one second display area A2 on one side of the first display area A1. Refer to Figure 3 and Figure 6 , within the first display area A1 and the second display area A2, a light-emitting element C200 serving as a sub-pixel SubP may be provided in the pixel layer F300, so that both the first display area A1 and the second display area A2 can realize picture display.

[0047] Refer to Figure 4 , a display device applying the display panel PNL may include at least one photosensitive component C300. Among them, the photosensitive component C300 may be provided in one-to-one correspondence with the second display area A2, and the photosensitive component C300 may be directly opposite to the corresponding second display area A2 to receive light transmitted from the second display area A2. The photosensitive component C300 may have a photosensitive area for sensing light, and the orthographic projection of the photosensitive area on the substrate F100 may be located within the second display area A2. The photosensitive component C300 may be one or more light sensors, for example, may be a camera, an optical fingerprint recognition chip, a light intensity sensor, etc. In some embodiments, the photosensitive component C300 may be a camera, for example, may be a CCD (Charge Coupled Device) camera; thus, the display device can realize under-screen photography and improve the screen-to-body ratio of the display device.

[0048] Optionally, referring to Figure 1 and Figure 2 , the second display area A2 can be embedded in the first display area A1, that is, the first display area A1 surrounds the second display area A2. When the number of the second display areas A2 is multiple, the second display areas A2 can be arranged dispersedly or adjacently. Of course, in other embodiments of the present disclosure, the second display area A2 can also be located on one side of the first display area A1; for example, the edge of the second display area A2 can overlap with a part of the inner edge of the peripheral area BB, so that the second display area A2 is arranged at the edge position of the display area AA.

[0049] Optionally, the shape of any one of the second display areas A2 can be circular, square, rhombic, regular hexagon or other shapes. In an embodiment of the present disclosure, the shape of the second display area A2 can be circular.

[0050] The number of the second display areas A2 can be one or multiple, subject to the setting of the photosensitive component C300. In an embodiment of the present disclosure, the number of the second display areas A2 is one. In this way, the display device can be provided with an in-screen photosensitive component C300, for example, an in-screen camera or an in-screen optical fingerprint recognition chip can be provided. In another embodiment of the present disclosure, the number of the second display areas A2 is multiple. In this way, the display device can be provided with multiple photosensitive components C300, and any two photosensitive components C300 can be the same or different. Exemplarily, referring to Figure 2 , the number of the second display areas A2 is three and they are arranged adjacently. In this way, the display device can be provided with different photosensitive components C300 corresponding to the three second display areas A2 one by one, for example, an imaging camera, a telephoto camera, and an infrared camera are provided as the three different photosensitive components C300.

[0051] In some embodiments of the present disclosure, referring to Figure 3, in the second display area A2, the pixel driving circuit C100 may not be provided to reduce the influence of the pixel driving circuit C100 on the light transmittance and improve the light transmittance of the second display area A2. The pixel driving circuits C100 of the respective light-emitting elements C200 (sub-pixels) located in the second display area A2 may be provided in the first display area A1. Further, the pixel electrode F300D1 of each light-emitting element C200 located in the second display area A2 includes an electrode body F300D11 and an electrode extension lead F300D12 that are connected to each other. Among them, the electrode body F300D11 is located in the second display area A2 and is used as the cathode or anode of the light-emitting element C200; the electrode extension lead F300D12 is provided in the first display area A1 and the second display area A2, one end of which is connected to the electrode body F300D11, and the other end is electrically connected to the pixel driving circuit C100 corresponding to the light-emitting element C200. In some embodiments, the electrode extension lead F300D12 may be made of a transparent conductive material, such as a transparent metal oxide. Exemplarily, the material of the electrode extension lead F300D12 may be ITO (indium tin oxide). In an embodiment of the present disclosure, the material of the electrode extension lead F300D12 may be the same as the material of the electrode body F300D11 and be provided in the same layer, which enables the electrode extension lead F300D12 and the electrode body F300D11 to be fabricated in the same process.

[0052] In this embodiment, the light-emitting elements C200 in the display panel PNL of the present disclosure can be divided into first light-emitting elements C201 located in the first display area A1 and second light-emitting elements C202 located in the second display area A2 according to their positions. The pixel driving circuits C100 in the display panel PNL of the present disclosure can be divided into a first pixel driving circuit C101 for driving the first light-emitting element C201 and a second pixel driving circuit C102 for driving the second light-emitting element C202 according to the light-emitting elements C200 they drive. Among them, the output end of the first pixel driving circuit C101 is electrically connected to the pixel electrode F300D1 of the first light-emitting element C201, and the output end of the second pixel driving circuit C102 is electrically connected to the electrode extension lead F300D12 of the pixel electrode F300D1 of the second light-emitting element C202. In other words, both ends of the electrode extension lead F300D12 are respectively connected to the electrode body F300D11 of the pixel electrode F300D1 of the second light-emitting element C202 and the output end of the second pixel driving circuit C102.

[0053] In an embodiment of the present disclosure, the first display area A1 may include an auxiliary display area adjacent to the second display area A2, and the second pixel driving circuit C102 may be provided in the auxiliary display area.

[0054] Certainly, in other embodiments of the present disclosure, a pixel driving circuit C100 may also be provided in the second display area A2 to drive each light-emitting element located in the second display area A2. Further, the area of the pixel driving circuit located in the second display area A2 may be smaller than the area of the pixel driving circuit located in the first display area A1. In other words, the pattern area of the pixel driving circuit in the second display area A2 may be reduced to reduce the influence of the pixel driving circuit on the light transmittance of the second display area A2, thereby improving the light transmittance of the second display area A2.

[0055] In some embodiments of the present disclosure, referring to Figure 6 , the light-emitting area of the sub-pixels SubP in the second display area A2 may be reduced to improve the light transmittance of the second display area A2. Specifically, among the sub-pixels (such as each first sub-pixel SubP1, each second sub-pixel SubP2, or each third sub-pixel SubP3) for emitting light of the same color, the light-emitting area of the sub-pixels located in the first display area A1 is larger than the light-emitting area of the sub-pixels located in the second display area A2. In this way, the light transmittance of the second display area A2 can be improved by reducing the light-emitting area of the sub-pixels while maintaining the distribution density of the sub-pixels, and the display panel PNL can have a higher resolution (PPI) in the second display area A2. In one embodiment of the present disclosure, the resolution of the display panel PNL in the second display area A2 may be greater than 400 PPI.

[0056] Since the light-emitting area of the sub-pixels in the second display area A2 is reduced, in order to enable the second display area A2 to display a normal image, the driving current for driving the sub-pixels in the second display area A2 may be increased to increase the brightness of the sub-pixels in the second display area A2. Certainly, in other embodiments of the present disclosure, the light-emitting areas of the same type of sub-pixels in the first display area A1 and the second display area A2 may also be the same.

[0057] In some embodiments, referring to Figure 6 , the distribution density of the sub-pixels SubP in the second display area A2 may be the same as the distribution density of the sub-pixels SubP in the first display area A1, so that the first display area A1 and the second display area A2 have the same resolution, and the uniformity of the display of the display panel PNL in the first display area A1 and the second display area A2 is improved. In the present disclosure, the distribution density of the sub-pixels refers to the number of sub-pixels per unit area. Certainly, in other embodiments of the present disclosure, the distribution densities of the sub-pixels in the first display area A1 and the second display area A2 may also be different; for example, the distribution density of the sub-pixels in the first display area A1 may be greater than the distribution density of the sub-pixels in the second display area A2.

[0058] In the present disclosure, the sub-pixels (light-emitting elements) may include a variety of different sub-pixels, such as two sub-pixels, three sub-pixels, or four sub-pixels, etc. Different sub-pixels are used to emit light of different colors (such as red light, green light, blue light, yellow light, cyan light, magenta light, white light, etc.). Exemplarily, referring to Figure 6 , the sub-pixel SubP may include a first sub-pixel SubP1, a second sub-pixel SubP2, and a third sub-pixel SubP3. Further, the first sub-pixel SubP1 may be a blue sub-pixel, the second sub-pixel SubP2 may be a red sub-pixel, and the third sub-pixel SubP3 may be a green sub-pixel.

[0059] Figure 7 and Figure 8 are schematic diagrams of the film layer structure of the display panel PNL of the present disclosure. Referring to Figure 7 , the display panel may include a substrate substrate F100, a driving circuit layer F200, a pixel layer F300, a touch control function layer F500, and an organic layer F700 that are sequentially stacked.

[0060] The substrate substrate F100 may be a substrate substrate F100 made of an inorganic material or an organic material. For example, in an embodiment of the present disclosure, the material of the substrate substrate F100 may be a glass material such as soda-lime glass, quartz glass, sapphire glass, etc., or may be a metal material such as stainless steel, aluminum, nickel, etc. In another embodiment of the present disclosure, the material of the substrate substrate F100 may be Polymethylmethacrylate (PMMA), Polyvinyl alcohol (PVA), Polyvinylphenol (PVP), Polyether sulfone (PES), polyimide, polyamide, polyacetal, polycarbonate (PC), Polyethylene terephthalate (PET), Polyethylene naphthalate (PEN), or a combination thereof.

[0061] In an embodiment of the present disclosure, the substrate substrate F100 is a flexible substrate substrate. Thus, the display panel of the present disclosure may be a flexible display panel. The substrate substrate includes a layer of flexible organic material layer (such as including a layer of polyimide layer), and may also include multiple layers of flexible organic material layers, and an inorganic layer may be provided between the multiple layers of flexible organic material layers.

[0062] Optionally, referring to Figure 3 and Figure 7, a pixel driving circuit (C101 and C102) for driving a light-emitting element C200 (i.e., a sub-pixel) is provided in the driving circuit layer F200. Any one of the pixel driving circuits may include a transistor F200M and a storage capacitor. Further, the transistor F200M may be a thin-film transistor, and the thin-film transistor may be a top-gate thin-film transistor, a bottom-gate thin-film transistor, or a double-gate thin-film transistor; the material of the active layer of the thin-film transistor may be an amorphous silicon semiconductor material, a low-temperature polycrystalline silicon semiconductor material, a metal oxide semiconductor material, an organic semiconductor material, or other types of semiconductor materials; the thin-film transistor may be an N-type thin-film transistor or a P-type thin-film transistor. In an embodiment of the present disclosure, the thin-film transistor is a low-temperature polycrystalline silicon transistor.

[0063] It can be understood that among the transistors in the pixel driving circuit, the types of any two transistors may be the same or different. Exemplarily, in one embodiment, in a pixel driving circuit, some transistors may be N-type transistors and some transistors may be P-type transistors. Another example is that in another embodiment of the present disclosure, in a pixel driving circuit, the material of the active layer of some transistors may be a low-temperature polycrystalline silicon semiconductor material, and the material of the active layer of some transistors may be a metal oxide semiconductor material.

[0064] Optionally, the driving circuit layer F200 may include a semiconductor layer F203, a gate insulating layer F204, a gate layer F205, an interlayer dielectric layer F206, a source / drain metal layer F207, etc., which are stacked between the substrate F100 and the pixel layer F300. Each thin film transistor and storage capacitor may be formed by film layers such as the semiconductor layer F203, the gate insulating layer F204, the gate layer F205, the interlayer dielectric layer F206, and the source / drain metal layer F207. Among them, the positional relationship of each film layer may be determined according to the film layer structure of the thin film transistor. For example, in an embodiment of the present disclosure, the driving circuit layer F200 may include a semiconductor layer F203, a gate insulating layer F204, a gate layer F205, an interlayer dielectric layer F206, and a source / drain metal layer F207 that are stacked in sequence. The thin film transistor formed in this way is a top-gate thin film transistor. For another example, in another embodiment of the present disclosure, the driving circuit layer F200 may include a gate layer F205, a gate insulating layer F204, a semiconductor layer F203, an interlayer dielectric layer F206, and a source / drain metal layer F207 that are stacked in sequence. The thin film transistor formed in this way is a bottom-gate thin film transistor. The driving circuit layer F200 may also adopt a double-gate layer F205 structure, that is, the gate layer F205 may include a first gate layer and a second gate layer, and the gate insulating layer F204 may include a first gate insulating layer for isolating the semiconductor layer F203 and the first gate layer, and a second gate insulating layer for isolating the first gate layer and the second gate layer. For example, in an embodiment of the present disclosure, the driving circuit layer F200 may include a semiconductor layer F203, a first gate insulating layer, a first gate layer, a second gate insulating layer, a second gate layer, an interlayer dielectric layer F206, and a source / drain metal layer F207 that are stacked in sequence on one side of the substrate F100.

[0065] Optionally, the driving circuit layer F200 may further include a passivation layer, and the passivation layer may be disposed on the surface of the source / drain metal layer F207 away from the substrate F100 to protect the source / drain metal layer F207.

[0066] Optionally, the driving circuit layer F200 may further include a buffer material layer F201 disposed between the substrate F100 and the semiconductor layer F203, and the semiconductor layer F203, the gate layer F205, etc. are all located on the side of the buffer material layer away from the substrate F100. The material of the buffer material layer F201 may be an inorganic insulating material such as silicon oxide or silicon nitride. The buffer material layer F201 may be a single layer of inorganic material or a multi-layer stack of inorganic materials. In one embodiment of the present disclosure, the buffer material layer F201 may include a barrier layer near the substrate F100 and a buffer layer on the side of the barrier layer away from the substrate F100. The barrier layer is used to prevent components such as ions in the substrate F100 from penetrating into the driving circuit layer F200, so that the driving circuit layer F200 maintains stable performance. The buffer layer can improve the bonding force between the driving circuit layer F200 and the substrate F100 and provide a stable environment for the driving circuit layer F200.

[0067] Optionally, the driving circuit layer F200 may further include a planarization layer F208 located between the source-drain metal layer F207 and the pixel layer F300, and the planarization layer F208 can provide a planarized surface for the pixel electrode. Optionally, the material of the planarization layer F208 may be an organic material.

[0068] The pixel layer F300 may be provided with a light-emitting element electrically connected to the pixel driving circuit corresponding thereto, and the light-emitting element may serve as a sub-pixel of the display panel. Thus, the pixel layer is provided with light-emitting elements distributed in an array, and each light-emitting element emits light under the control of the pixel driving circuit. In the present disclosure, the light-emitting element may be an organic light-emitting diode (OLED), a micro light-emitting diode (Micro LED), a quantum dot-organic light-emitting diode (QD-OLED), a quantum dot light-emitting diode (QLED), or other types of light-emitting elements. Exemplarily, in one embodiment of the present disclosure, if the light-emitting element is an organic light-emitting diode (OLED), then the display panel is an OLED display panel. As follows, taking the light-emitting element as an organic light-emitting diode as an example, a feasible structure of the pixel layer will be introduced exemplarily.

[0069] In this example, the pixel layer F300 can be disposed on a side of the driving circuit layer F200 away from the substrate F100, and it can include a pixel electrode layer F301, a pixel definition layer F302, a support pillar layer F303, an organic light-emitting functional layer F304, and a common electrode layer F305 that are sequentially stacked. Among them, the pixel electrode layer F301 has a plurality of pixel electrodes in the display area of the display panel; the pixel definition layer F302 has a plurality of through pixel openings corresponding to the plurality of pixel electrodes one by one in the display area, and at least a partial area of a corresponding pixel electrode is exposed through any one pixel opening. The support pillar layer F303 includes a plurality of support pillars in the display area, and the support pillars are located on a surface of the pixel definition layer F302 away from the substrate F100 to support a fine metal mask (FMM) during an evaporation process. The organic light-emitting functional layer F304 covers at least the pixel electrodes exposed by the pixel definition layer F302. Among them, the organic light-emitting functional layer F304 can include an organic electroluminescent material layer, and can include one or more of a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer, and an electron injection layer. Each film layer of the organic light-emitting functional layer F304 can be prepared by an evaporation process, and a pattern of each film layer can be defined by using a fine metal mask or an open mask during evaporation. The common electrode layer F305 can cover the organic light-emitting functional layer F304 in the display area. In this way, the pixel electrode, the common electrode layer F305, and the organic light-emitting functional layer F304 located between the pixel electrode and the common electrode layer F305 form an organic light-emitting diode F300D, and any one organic electroluminescent diode can serve as a sub-pixel of the display panel. Among them, the light-emitting area of any one sub-pixel can be the area of the region where the pixel electrode of the sub-pixel is exposed by the pixel opening. The center of any one sub-pixel can be the center of the region where the pixel electrode of the sub-pixel is exposed by the pixel opening.

[0070] Optionally, the display panel can further include a thin film encapsulation layer F400. The thin film encapsulation layer F400 is disposed on a surface of the pixel layer F300 away from the substrate F100, and can include an inorganic encapsulation layer and an organic encapsulation layer that are alternately stacked. Among them, the inorganic encapsulation layer can effectively block external moisture and oxygen, and prevent water and oxygen from invading the organic light-emitting functional layer F304 and causing material degradation. Optionally, an edge of the inorganic encapsulation layer can be located in the peripheral area. The organic encapsulation layer is located between two adjacent inorganic encapsulation layers to achieve planarization and reduce stress between the inorganic encapsulation layers. Among them, an edge of the organic encapsulation layer can be located between an edge of the display area and an edge of the inorganic encapsulation layer. Exemplarily, the thin film encapsulation layer F400 includes a first inorganic encapsulation layer F401, an organic encapsulation layer F402, and a second inorganic encapsulation layer F403 that are sequentially stacked on a side of the pixel layer F300 away from the substrate F100.

[0071] Optionally, the touch function layer F500 is disposed on a side of the pixel layer away from the substrate F100, for example, on a side of the thin film encapsulation layer F400 away from the substrate F100, to implement touch operations on the display panel.

[0072] In some embodiments, referring to Figure 8 , the touch function layer F500 may include a touch trace layer F502, an inorganic dielectric layer F503, and a touch electrode layer F504 that are sequentially stacked on one side of the substrate; the touch electrode layer F504 is located on a side of the touch trace layer F502 away from the substrate F100. One or both of the touch trace layer F502 and the touch electrode layer F504 are used to form touch electrodes. In an embodiment of the present disclosure, the touch function layer F500 is disposed on a side of the thin film encapsulation layer F400 away from the substrate.

[0073] Optionally, a touch buffer layer F501 may further be included between the touch trace layer F502 and the thin film encapsulation layer F400. The material of the touch buffer layer F501 may be an inorganic material, such as silicon nitride, silicon oxide, or silicon oxynitride. It can be understood that, in other embodiments of the present disclosure, the outermost inorganic encapsulation layer of the thin film encapsulation layer F400 may also be reused as the touch buffer layer F501.

[0074] Optionally, the touch trace layer F502 and the touch electrode layer F504 may be light-transmissive film layers, so that the formed touch electrode F510 is a transparent electrode. In an embodiment of the present disclosure, the materials of the touch trace layer F502 and the touch electrode layer F504 may be light-transmissive materials, such as transparent conductive metal oxides (such as indium tin oxide, etc.). Of course, the touch trace layer F502 and the touch electrode layer F504 of the present disclosure may also use opaque materials, and the patterns formed thereby may be opaque patterns, and the light emitted by the sub-pixels may pass through the spaces between these patterns.

[0075] The shape and position of the touch electrode may be set according to the needs of the display panel, so that the touch function layer F500 can determine the touch position based on the self-capacitance or mutual capacitance principle. The touch function layer F500 may also be used to form touch leads to conduct the signals generated by the touch electrodes in response to touch actions.

[0076] In an embodiment of the present disclosure, referring to Figure 8 , the touch electrode layer F504 is formed with touch electrodes (F511, F512), and at least part of the inorganic dielectric layer F503 is exposed. The light emitted by the sub-pixel SubP may pass through the inorganic dielectric layer F503 exposed by the touch electrode layer F504.

[0077] Exemplarily, refer to Figure 8 , in an embodiment of the present disclosure, the touch electrode includes a plurality of row touch electrodes F511 extending in the row direction and a plurality of column touch electrodes F512 extending in the column direction. Each row touch electrode F511 is arranged in sequence along the column direction, and each column touch electrode F512 is arranged in sequence along the row direction. Among them, any one column touch electrode is disposed on the touch electrode layer F504 and is located between the pixel openings of the pixel defining layer. Any one row touch electrode includes a plurality of row touch sub - electrodes arranged in sequence along the row direction. The row touch sub - electrodes are disposed on the touch electrode layer F504 and are located between the pixel openings of the pixel defining layer. In any one row touch electrode, two adjacent row touch sub - electrodes are connected by a bridging connection portion located on the touch wiring layer. Among them, the bridging connection portion is also located between the pixel openings.

[0078] In the present disclosure, refer to Figure 8 , an organic layer F700 is disposed on the side of the touch electrode layer F504 away from the substrate F100. The organic layer F700 can serve as a planarization layer to provide a flat surface for other subsequent film layers, or can serve as an optical adhesive layer to adhere other subsequent film layers, or can serve as an organic protection layer to protect the display panel PNL, or can perform other functions or be reused as other required film layers, provided that the material of the organic layer F700 is an organic substance.

[0079] Exemplarily, in an embodiment of the present disclosure, the display panel PNL may further include an anti - reflection layer to reduce the influence of ambient light on the display effect; the anti - reflection layer can be disposed on the surface of the organic layer F700 away from the substrate F100. In this embodiment, the organic layer F700 can be reused as an optical adhesive layer to adhere the anti - reflection layer (such as a polarizer, a color filter film, etc.), or can be reused as a planarization layer to provide a flat surface for preparing the anti - reflection layer (such as a color filter layer).

[0080] In the related art, refer to Figure 5 , the organic layer F700 can be directly disposed on the surface of the touch functional layer F500 away from the substrate. However, the refractive index of the touch functional layer is greater than that of the organic layer F700, which causes total reflection of the large - angle light emitted by the sub - pixels at the contact surface between the touch functional layer F500 and the organic layer F700, thereby reducing the light extraction rate of the display panel PNL and the brightness of the sub - pixels. Exemplarily, at the contact surface between the organic layer F700 and the inorganic dielectric layer, the large - angle light emitted by the sub - pixels will be totally reflected, and finally about 70% of the light will be trapped in the inorganic dielectric layer and the film layers below it, resulting in a large amount of light loss and reducing the light extraction rate of the sub - pixels and the emission brightness of the display panel PNL.

[0081] Therefore, refer to Figure 8, the display panel PNL of the present disclosure is further provided with a light extraction layer F600. The light extraction layer F600 is disposed on the surface of the touch function layer away from the substrate F100; and the organic layer F700 is disposed on the surface of the light extraction layer F600 away from the substrate F100. In other words, the light extraction layer F600 can be sandwiched between the touch function layer and the organic layer F700. The light extraction layer F600 is provided with convex lens structures LENS that overlap at least some of the sub-pixels one by one. Further, the refractive index of the convex lens structure LENS is greater than the refractive index of the touch function layer. In an embodiment of the present disclosure, each convex lens structure LENS constitutes the light extraction layer F600 of the present disclosure.

[0082] In the present disclosure, convex lens structures LENS overlapping with at least some of the sub-pixels are provided above at least some of the sub-pixels (in the direction away from the substrate F100), which can enable some of the light that should originally be totally reflected (emitted by the sub-pixels corresponding to the convex lens structures LENS) to enter the convex lens structures LENS and be emitted to the organic layer F700 through the convex lens structures LENS, thereby improving the light extraction rate of these sub-pixels. Thus, in order to achieve the same light emission brightness, at least some of the sub-pixels (the sub-pixels corresponding to the convex lens structures LENS) of the present disclosure can be driven by a lower drive circuit, which not only slows down the aging speed of these sub-pixels and increases their lifespan, but also can reduce the power consumption of the display panel PNL.

[0083] In the present disclosure, the light extraction rate of a sub-pixel can refer to the ratio of the light emitted by the sub-pixel that exits the display panel PNL to all the light emitted by the sub-pixel. The light emission brightness of a sub-pixel can refer to the brightness presented by the display panel PNL due to the sub-pixel emitting light. In the present disclosure, the overlap of a sub-pixel and a convex lens structure means that the orthographic projection of the sub-pixel on the substrate at least partially coincides with the orthographic projection of the convex lens structure on the substrate.

[0084] See Figure 8 , in an embodiment of the present disclosure, the touch electrode layer F504 forms touch electrodes and exposes at least some of the inorganic dielectric layer F503; at least some of the convex lens structures LENS are disposed on the surface of the inorganic dielectric layer F503 away from the substrate F100, and the refractive index of the convex lens structure LENS is not less than the refractive index of the inorganic dielectric layer. Further, the refractive index of the convex lens structure LENS is greater than the refractive index of the inorganic dielectric layer.

[0085] In an embodiment of the present disclosure, the refractive index of the convex lens structure LENS is in the range of 1.6 to 1.8, with the condition that it is greater than the refractive index of the inorganic dielectric layer.

[0086] In an embodiment of the present disclosure, the material of the convex lens structure LENS is an inorganic transparent material such as silicon nitride or zirconia. Of course, in other embodiments, the material of the convex lens structure LENS can also be other transparent materials with a relatively high refractive index.

[0087] Optionally, the orthographic projection of the convex lens structure LENS on the substrate F100 covers the orthographic projection of the corresponding sub-pixel on the substrate F100. In this way, as much light as possible emitted by the sub-pixel can be extracted by the corresponding convex lens structure LENS, and the light extraction rate of the sub-pixel corresponding to the convex lens structure LENS can be increased as much as possible.

[0088] Optionally, the orthographic projection of the center of the convex lens structure LENS on the substrate F100 coincides with the orthographic projection of the center of the corresponding sub-pixel on the substrate F100. In this way, the light extraction rate of the sub-pixel corresponding to the convex lens structure LENS in different directions can be improved more uniformly, thereby reducing the risk of color deviation defects in the display panel PNL.

[0089] In an embodiment of the present disclosure, the organic layer F700 covers the surface of the convex lens structure LENS away from the substrate F100; the refractive index of the organic layer F700 is less than the refractive index of the convex lens structure LENS.

[0090] In an embodiment of the present disclosure, the convex lens structure LENS is a plano-convex lens structure LENS, and the organic layer F700 covers the convex surface of the convex lens structure LENS. In other words, the plane of the convex lens structure LENS is adjacent to the upper surface (the surface away from the substrate F100) of the touch control circuit layer, and the convex surface of the convex lens structure LENS is adjacent to the lower surface (the surface close to the substrate F100) of the organic layer F700. In the present disclosure, among the two opposite surfaces of the plano-convex lens structure, one surface is basically a plane (the surface in direct contact with the touch control function layer), and the other surface is a convex surface protruding outward from the center (the surface in direct contact with the organic layer). It can be understood that the plane of the plano-convex lens structure in the present disclosure can have local protrusions or depressions, which are caused by the local unevenness of the surface of the touch control function layer used as the substrate when preparing the convex lens structure. These protrusions or depressions will not have a negative impact on the function of the plano-convex lens structure in the present disclosure.

[0091] In the present disclosure, the pitch of the convex lens structure LENS can be determined as needed, especially according to the position of the corresponding sub-pixel, with the condition that it is located above the corresponding sub-pixel. In an embodiment of the present disclosure, the pitch of the convex lens structure LENS can be in the range of 20 to 80 micrometers.

[0092] Optionally, the convex lens structure LENS can be fabricated using a photolithography process. Exemplarily, in one embodiment of the present disclosure, a light extraction material layer can be deposited on the side of the touch function layer away from the substrate F100, and then the light extraction material layer can be patterned using a photolithography process to obtain the desired convex lens structure LENS to form the light extraction layer F600. Further, in the photolithography process, a halftone process can be used to form the convex lens structure LENS.

[0093] In another embodiment of the present disclosure, when fabricating the touch function layer, the upper surface (the surface away from the substrate F100) of the inorganic dielectric layer can be locally raised upward to form the convex lens structure LENS, and the raised portion can be reused as the light extraction layer F600 of the display panel PNL of the present disclosure. In this way, the inorganic dielectric layer and the light extraction layer F600 can be fabricated simultaneously in the same process, and they are made of the same material. Exemplarily, after fabricating the touch wiring layer, an inorganic material layer can be formed on the side of the touch wiring layer away from the substrate F100, and then the inorganic material layer can be patterned to obtain an inorganic layer. Among them, the inorganic layer has a convex lens structure LENS that protrudes upward (in the direction away from the substrate F100) in the area facing the target sub-pixel, and each convex lens structure LENS constitutes the light extraction layer F600 of the present disclosure. The other part of the inorganic layer serves as the inorganic dielectric layer of the present disclosure. In this example, the target sub-pixel is the sub-pixel that needs to be provided with a convex lens structure LENS above it according to the design.

[0094] Optionally, when the display panel PNL of the present disclosure is in display, the first display area A1 and the second display area A2 need to maintain the same level of brightness to avoid the phenomenon of uneven brightness spots (Mura) in the second display area A2. Optionally, different gamma curves can be used to optically adjust the first display area A1 and the second display area A2 respectively to make the light emission of the first display area A1 and the second display area A2 uniform. In the display panel PNL of the present disclosure, in order to improve the light transmittance of the second display area A2, the distribution density or the light-emitting area of the sub-pixels in the second display area A2 is adjusted, for example, the light-emitting area of the sub-pixels is reduced or the distribution density of the sub-pixels is reduced. Correspondingly, in order to make the brightness of the sub-pixels in the first display area A1 and the second display area A2 uniform, the driving current of the sub-pixels in the second display area A2 needs to be increased to increase the brightness of the sub-pixels in the second display area A2. The increase in the driving current of the sub-pixels in the second display area A2 will accelerate the brightness decay rate of the sub-pixels in the second display area A2, reduce the lifespan of the sub-pixels in the second display area A2, and easily cause image retention in the second display area A2. After a long time of use, the brightness and color differences between the second display area A2 and the first display area A1 will be significantly perceived, affecting the display quality.

[0095] Therefore, in the present disclosure, referring to Figure 9 and Figure 10 , the convex lens structure LENS includes at least a first convex lens structure LENS1; the first convex lens structure LENS1 is at least distributed in the second display area A2; in the second display area A2, each first sub-pixel SubP1 and each first convex lens structure LENS1 are arranged in an overlapping manner in one-to-one correspondence.

[0096] In the present disclosure, by providing the first convex lens structure LENS1 in the second display area A2, part of the light that should originally be totally reflected (emitted by the first sub-pixel SubP1) can enter the first convex lens structure LENS1, and is emitted to the organic layer F700 through the first convex lens structure LENS1, thereby increasing the proportion of the emitted light and improving the light extraction efficiency of the first sub-pixel SubP1 located in the second display area A2. Thus, the display panel of the present disclosure can use a lower driving current to increase the light emission brightness of the first sub-pixel SubP1 in the second display area A2, thereby slowing down the aging speed of the first sub-pixel SubP1 in the second display area A2, and further improving the brightness and color uniformity of the first display area and the second display area during long-term use. Further, in some embodiments of the present disclosure, by providing the first convex lens structure LENS1, the current density of the first sub-pixel SubP1 in the second display area A2 is less than the current density of the first sub-pixel SubP1 in the first display area A1 (under the condition of the same light emission intensity), thereby making the lifespan of the first sub-pixel SubP1 in the second display area A2 converge with the lifespan of the first sub-pixel SubP1 in the first display area A1.

[0097] In some embodiments of the present disclosure, referring to Figure 10, the convex lens structure LENS may only include the first convex lens structure LENS1. In other words, only above the first sub-pixel SubP1 (in the direction away from the substrate F100) is there a convex lens structure LENS to improve the light extraction efficiency of this sub-pixel and thereby reduce the driving current for driving this sub-pixel. In an embodiment of the present disclosure, the first sub-pixel SubP1 may be a blue sub-pixel. Compared with other sub-pixels, blue sub-pixels are more prone to aging, with shorter lifetimes and faster brightness decay, which is an important factor restricting the lifetime and display effect of the display panel PNL (the yellowing of the image of the display panel PNL due to the too-fast decay of blue sub-pixels). In this embodiment, by disposing the first convex lens structure LENS1 above (in the direction away from the substrate F100) the blue sub-pixel (the first sub-pixel SubP1) in the second display area A2, the light extraction efficiency of the blue sub-pixel can be improved (it is found in tests that it can be increased by 15% - 20%), and the current density of the blue sub-pixel can be reduced (it is found in tests that it can be reduced by 15% - 20%), thereby increasing the lifetime of the blue sub-pixel (it is found in tests that it can be increased by more than 45%). In this way, this embodiment overcomes the defect of the too-short lifetime of the blue sub-pixels in the second display area A2, and thereby can effectively improve the lifetime and image quality of the display panel PNL.

[0098] In an embodiment of the present disclosure, the first convex lens structure LENS1 may be disposed only in the second display area A2 and is disposed in one-to-one correspondence with the first sub-pixel SubP1 (blue sub-pixel) in the second display area A2. In this way, the lifetime of the first sub-pixel SubP1 in the second display area A2 can be specifically improved, making the lifetimes of the first sub-pixel SubP1 in the first display area A1 and the second display area A2 close, and thereby avoiding the premature aging of the first sub-pixel SubP1 in the second display area A2 and causing the second display area A2 to emit light, improving the display quality of the display panel PNL and enhancing the user experience.

[0099] In another embodiment of the present disclosure, the first convex lens structure LENS1 is also distributed in the first display area A1; in the first display area A1, each first sub-pixel SubP1 and each first convex lens structure LENS1 are disposed in an overlapping manner in one-to-one correspondence. In this way, in the first display area A1, the light extraction efficiency of the first sub-pixel SubP1 can also be improved, thereby reducing the driving current of the first sub-pixel SubP1 and increasing the brightness and lifetime of the first sub-pixel SubP1 located in the first display area A1. In this way, the first convex lens structure LENS1 is distributed throughout the display area AA and is disposed in one-to-one correspondence with each first sub-pixel SubP1 in the display area AA to increase the lifetime of each first sub-pixel SubP1.

[0100] In some other embodiments of the present disclosure, the convex lens structure LENS not only includes the first convex lens structure LENS1, but may also include a convex lens structure LENS corresponding to and overlapping at least some other sub-pixels (at least some of the sub-pixels other than the first sub-pixel) to improve the lifespan of at least some other sub-pixels (the sub-pixels corresponding to the convex lens structure LENS).

[0101] In these embodiments, the sub-pixels further include a second sub-pixel SubP2 and a third sub-pixel SubP3. Refer to Figure 9 , the convex lens structure LENS further includes a second convex lens structure LENS2 and a third convex lens structure LENS3; the second convex lens structure LENS2 is at least distributed in the second display area A2; in the second display area A2, each second sub-pixel SubP2 is arranged in an overlapping manner corresponding to each second convex lens structure LENS2 one by one; the third convex lens structure LENS3 is at least distributed in the second display area A2; in the second display area A2, each third sub-pixel SubP3 is arranged in an overlapping manner corresponding to each third convex lens structure LENS3 one by one. In these embodiments, a convex lens structure LENS is provided above each sub-pixel (in the direction away from the substrate F100) located in the second display area A2, which enhances the light extraction efficiency of each sub-pixel in the second display area A2, reduces the driving current of each sub-pixel, thereby weakening the aging speed of each sub-pixel in the second display area A2, improving the lifespan of each sub-pixel in the second display area A2, and further improving the lifespan and display quality of the display panel PNL. Thus, the luminance and color uniformity of the first display area and the second display area can be improved during long-term use. It is found in the test that for the sub-pixels corresponding to the convex lens structure LENS, the light extraction efficiency can be increased by 15% - 20%, the current density can be reduced by 15% - 20%, and the device lifespan can be increased by more than 45%.

[0102] It can be understood that when other sub-pixels are also provided in the second display area A2, corresponding convex lens structures LENS can also be provided above these sub-pixels to improve the lifespan of these sub-pixels in the second display area A2. Further, in some embodiments of the present disclosure, by providing the second convex lens structure LENS2, the current density of the second sub-pixel SubP2 in the second display area A2 is made less than the current density of the second sub-pixel SubP2 in the first display area A1 (under the condition of the same light-emitting intensity), thereby making the lifespan of the second sub-pixel SubP2 in the second display area A2 converge with the lifespan of the second sub-pixel SubP2 in the first display area A1. By providing the third convex lens structure LENS3, the current density of the third sub-pixel SubP3 in the second display area A2 is made less than the current density of the third sub-pixel SubP3 in the first display area A1 (under the condition of the same light-emitting intensity), thereby making the lifespan of the third sub-pixel SubP3 in the second display area A2 converge with the lifespan of the third sub-pixel SubP3 in the first display area A1.

[0103] In one embodiment of the present disclosure, the convex lens structure LENS is only provided in the second display area A2 and is provided in one-to-one correspondence with each sub-pixel in the second display area A2. In this way, the lifespan of each sub-pixel in the second display area A2 can be improved, making the lifespans of the sub-pixels in the first display area A1 and the second display area A2 tend to be the same, avoiding the sub-pixels in the second display area A2 aging too fast and causing color difference between the first display area A1 and the second display area A2, and avoiding the color difference between the first display area A1 and the second display area A2 from reducing the display quality and affecting the user experience.

[0104] In another embodiment of the present disclosure, the second convex lens structure LENS2 is also distributed in the first display area A1; in the first display area A1, each second sub-pixel SubP2 and each second convex lens structure LENS2 are provided in an overlapping manner in one-to-one correspondence; the third convex lens structure LENS3 is also distributed in the first display area A1; in the first display area A1, each third sub-pixel SubP3 and each third convex lens structure LENS3 are provided in an overlapping manner in one-to-one correspondence. In this way, in the first display area A1, the light extraction rates of the second sub-pixel SubP2 and the third sub-pixel SubP3 can also be improved, thereby reducing the driving currents of the second sub-pixel SubP2 and the third sub-pixel SubP3 and increasing the brightness and lifespan of the second sub-pixel SubP2 and the third sub-pixel SubP3 located in the first display area A1. In this way, the convex lens structure LENS is also distributed in the first display area A1 and is provided in one-to-one correspondence with each sub-pixel in the first display area A1.

[0105] Other embodiments of the present disclosure will be readily apparent to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include known common general knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and examples are only to be considered as exemplary, and the true scope and spirit of the present disclosure are pointed out by the appended claims.

Claims

1. A display panel includes a first display area and a second display area, and the light transmittance of the second display area is greater than that of the first display area; characterized in that, The display panel includes: a substrate substrate; a pixel layer disposed on one side of the substrate substrate; the pixel layer is provided with sub-pixels; the sub-pixels include first sub-pixels disposed in the second display area; a touch function layer disposed on the side of the pixel layer away from the substrate substrate; the touch function layer includes a touch trace layer, an inorganic dielectric layer, and a touch electrode layer that are sequentially stacked on the side of the pixel layer away from the substrate substrate; the touch electrode layer is formed with touch electrodes and exposes at least part of the inorganic dielectric layer; a light extraction layer disposed on the surface of the touch function layer away from the substrate substrate; the light extraction layer includes convex lens structures disposed in the second display area, and each of the convex lens structures is overlapped with each of the first sub-pixels in a one-to-one correspondence; wherein, at least part of the convex lens structure is disposed on the surface of the inorganic dielectric layer away from the substrate substrate, and the refractive index of the convex lens structure is greater than or equal to the refractive index of the inorganic dielectric layer; the convex lens structures are also distributed in the first display area; the first sub-pixels are also distributed in the first display area; In the first display area, each of the first sub-pixels is overlapped with each of the convex lens structures in a one-to-one correspondence; an organic layer disposed on the surface of the light extraction layer away from the substrate substrate and covering at least the display area.

2. The display panel according to claim 1, characterized in that, The orthographic projection of the convex lens structure on the substrate substrate covers the orthographic projection of the corresponding sub-pixel on the substrate substrate.

3. The display panel according to claim 2, characterized in that, The orthographic projection of the center of the convex lens structure on the substrate substrate coincides with the orthographic projection of the center of the corresponding sub-pixel on the substrate substrate.

4. The display panel according to claim 1, characterized in that, The organic layer covers the surface of the convex lens structure away from the substrate substrate; the refractive index of the organic layer is less than the refractive index of the convex lens structure.

5. The display panel according to claim 1, characterized in that, The refractive index of the convex lens structure is in the range of 1.6 to 1.

8.

6. The display panel according to claim 1, characterized in that, The material of the convex lens structure is silicon nitride and / or zirconium oxide.

7. The display panel according to any one of claims 1 to 6, characterized in that, The first sub-pixel is a blue sub-pixel.

8. The display panel according to any one of claims 1 to 6, characterized in that, The distribution density of the sub-pixels in the first display area and the second display area is the same.

9. The display panel according to any one of claims 1 to 6, characterized in that, Among the sub-pixels that emit the same color light, the light-emitting area of the sub-pixels located in the first display area is larger than the light-emitting area of the sub-pixels located in the second display area.

10. The display panel according to any one of claims 1 to 6, characterized in that, The sub-pixels further include second sub-pixels and third sub-pixels located in the second display area; the convex lens structures are overlapped with each of the second sub-pixels and the third sub-pixels in a one-to-one correspondence.

11. The display panel according to claim 10, characterized in that, The second sub-pixels and the third sub-pixels are also distributed in the first display area; the convex lens structures are also distributed in the first display area; In the first display area, each of the second sub-pixels and each of the third sub-pixels are provided with the corresponding convex lens structures.

12. The display panel according to any one of claims 1 to 6, characterized in that, The convex lens structure is a plano-convex lens structure, and the organic layer covers the convex surface of the convex lens structure.

13. A display device includes the display panel according to any one of claims 1 to 12 and a camera, and the camera is located below the display panel and corresponds to the second display area.

Images