Display panel and its manufacturing method, display device

Abstract

This application discloses a display panel, its manufacturing method, and a display device. The display panel has a first display area and a second display area, wherein the light transmittance of the first display area is greater than that of the second display area. The display panel includes: a driving device layer; and a pixel definition layer located on one side of the driving device layer. In the first display area, the pixel definition layer includes at least one stacked film layer group, the film layer group including a stacked first sub-film layer and a second sub-film layer, the second sub-film layer being located on the side of the first sub-film layer facing away from the driving device layer, the surface of the first sub-film layer facing away from the driving device layer being convex, and the refractive index of the second sub-film layer being less than that of the first sub-film layer. According to the embodiments of this application, the light flux received by the under-display photosensitive component can be improved.

Description

Technical Field

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

[0002] With the widespread development and in-depth application of display technology, the pursuit of high screen-to-body ratio (or even full-screen) displays with a superior visual experience has become one of the current trends in display technology development. Technologies such as under-display fingerprint recognition and under-display cameras have greatly improved the screen-to-body ratio of displays. However, the manufacturing process of under-display photosensitive components is limited by factors such as the light transmittance of various film layers and the metal traces on the array substrate, resulting in less than ideal light flux received by the photosensitive components. Summary of the Invention

[0003] This application provides a display panel and its manufacturing method, as well as a display device, which can improve the light flux received by the under-screen photosensitive component.

[0004] In a first aspect, embodiments of this application provide a display panel having a first display area and a second display area, wherein the light transmittance of the first display area is greater than that of the second display area. The display panel includes: a driving device layer; and a pixel definition layer located on one side of the driving device layer. In the first display area, the pixel definition layer is made of a transparent material and includes at least one stacked film layer group. The film layer group includes a stacked first sub-film layer and a second sub-film layer. The second sub-film layer is located on the side of the first sub-film layer facing away from the driving device layer. The surface of the first sub-film layer facing away from the driving device layer is convex, and the refractive index of the second sub-film layer is less than that of the first sub-film layer.

[0005] In one possible implementation of the first aspect, the second sub-film layer is an ion-implanted film layer, and the first sub-film layer is a non-ion-implanted film layer;

[0006] Optionally, the body of the second sub-membrane layer is an integral structure with the first sub-membrane layer.

[0007] In one possible implementation of the first aspect, the material of the second sub-film layer includes fluoride ions;

[0008] Optionally, the materials of the body portion of the second sub-membrane layer and the first sub-membrane layer include organic materials;

[0009] Optionally, the refractive index of the first sub-film layer is 1.7 to 1.85;

[0010] Optionally, the refractive index of the second sub-film is 1.3 to 1.69.

[0011] In one possible implementation of the first aspect, the surface of the pixel definition layer facing away from the driving device layer is planar.

[0012] In one possible implementation of the first aspect, the pixel definition layer includes at least two stacked film layer groups, wherein, in a direction perpendicular to the plane of the display panel, except for the film layer group furthest from the driving device layer, the surface of the second sub-film layer in each film layer group facing away from the driving device layer is concave.

[0013] In one possible implementation of the first aspect, the first display area includes a light-concentrating area, a first sub-film layer and a second sub-film layer are at least partially located in the light-concentrating area, a driving device layer located in the first display area includes signal traces, and the first sub-film layer and the second sub-film layer constitute a light-concentrating structure that allows some light to bypass the signal traces and be directed to converge to the light-concentrating area.

[0014] Optionally, the focal point of the light-focusing structure formed by the first sub-film layer and the second sub-film layer is projected onto the plane of the display panel, and the projection of the focal point onto the plane of the display panel is located within the projection of the light-focusing area onto the plane of the display panel.

[0015] Optionally, the orthographic projection of the focal point of the light-focusing structure formed by the first sub-film layer and the second sub-film layer onto the plane where the display panel is located overlaps with the orthographic projection of the center point of the light-focusing area onto the plane where the display panel is located.

[0016] In one possible implementation of the first aspect, the display panel includes light-emitting elements of multiple colors, and the pixel definition layer includes multiple openings, with the light-emitting elements disposed in the openings;

[0017] The light-emitting elements include red light-emitting elements, green light-emitting elements and blue light-emitting elements. The refractive index of the second sub-film layer around the red light-emitting element is less than that of the second sub-film layer around the green light-emitting element, and the refractive index of the second sub-film layer around the green light-emitting element is less than that of the second sub-film layer around the blue light-emitting element.

[0018] Based on the same inventive concept, in a second aspect, embodiments of this application provide a method for manufacturing a display panel. The display panel has a first display area and a second display area, wherein the light transmittance of the first display area is greater than that of the second display area. The method for manufacturing the display panel includes:

[0019] Provides a driving device layer;

[0020] A pixel definition layer is formed on one side of the driving device layer, and in the first display area, at least one film layer group is formed by stacking at least one film layer in the pixel definition layer. The film layer group includes a stacked first sub-film layer and a second sub-film layer. The second sub-film layer is located on the side of the first sub-film layer that is away from the driving device layer. The surface of the first sub-film layer that is away from the driving device layer is convex. The refractive index of the second sub-film layer is less than the refractive index of the first sub-film layer.

[0021] In one possible implementation of the second aspect, a pixel definition layer is formed on one side of the driving device layer, comprising:

[0022] A body layer is formed on one side of the driving device layer;

[0023] Ions are injected into the body layer within the first display area to form a pixel definition layer, wherein the second sub-film layer is an ion-implanted film layer and the first sub-film layer is a non-ion-implanted film layer;

[0024] Optionally, ions are implanted into the body layer within the first display area, including:

[0025] Fluorine ions are injected into the body layer within the first display area;

[0026] Optionally, the bulk layer may include organic materials.

[0027] Based on the same inventive concept, in a second aspect, embodiments of this application provide a display device, including a photosensitive component and a display panel as described in any of the embodiments of the first aspect above; the photosensitive component is disposed corresponding to a first display area of ​​the display panel.

[0028] According to the display panel and its manufacturing method and display device provided in the embodiments of this application, since the surface of the first sub-film layer facing away from the driving device layer is convex, and the refractive index of the second sub-film layer is less than that of the first sub-film layer, the first and second sub-film layers constitute a light-focusing structure. When ambient light enters the second sub-film layer, due to the difference in refractive indices between the first and second sub-film layers, the light is refracted at the interface between the first and second sub-film layers. Furthermore, because the refractive index of the second sub-film layer is less than that of the first sub-film layer, the light converges after passing through the interface between the first and second sub-film layers, thereby increasing the light flux received by the under-display photosensitive component. For example, if the photosensitive component is a camera, this can improve the imaging effect of the camera. Attached Figure Description

[0029] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals denote the same or similar features, and the drawings are not drawn to scale.

[0030] Figure 1 This is a top view schematic diagram of a display panel provided in one embodiment of this application;

[0031] Figure 2 Show Figure 1 A schematic diagram of a cross-sectional structure along the AA direction;

[0032] Figure 3 This illustration shows a schematic diagram of light passing through the pixel definition layer of a display panel according to an embodiment of this application;

[0033] Figure 4 Show Figure 1A schematic diagram of another cross-sectional structure along the AA direction;

[0034] Figure 5 This illustration shows a schematic diagram of light passing through the pixel definition layer of a display panel according to another embodiment of this application;

[0035] Figure 6 Show Figure 1 A schematic diagram of another cross-sectional structure along the AA direction;

[0036] Figure 7 Show Figure 1 A schematic diagram of another cross-sectional structure along the AA direction;

[0037] Figure 8 Show Figure 1 A schematic diagram of a cross-sectional structure along the BB direction;

[0038] Figure 9 This is a schematic flowchart illustrating a method for manufacturing a display panel according to an embodiment of this application;

[0039] Figure 10 This illustration shows a structural diagram corresponding to a method for manufacturing a display panel according to an embodiment of this application;

[0040] Figure 11 This is a top view schematic diagram of a display device provided in one embodiment of this application;

[0041] Figure 12 Show Figure 11 A schematic diagram of a cross-sectional structure in the CC direction. Detailed Implementation

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

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

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

[0045] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0046] Various modifications and variations can be made to this application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, this application is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in this application can be combined with each other without contradiction.

[0047] In electronic devices such as mobile phones and tablets, light-sensing components such as front-facing cameras, infrared light sensors, and proximity sensors need to be integrated on one side of the display panel. In some embodiments, a light-transmitting display area can be provided on the aforementioned electronic device, and the light-sensing components can be placed behind the light-transmitting display area, achieving a full-screen display of the electronic device while ensuring that the light-sensing components function properly. However, in related technologies, the light flux received by the light-sensing components is not ideal.

[0048] This application provides a display panel, a method for manufacturing the same, and a display device. The following description, in conjunction with the accompanying drawings, will illustrate various embodiments of the display panel, its manufacturing method, and the display device.

[0049] The display panel provided in the embodiments of this application will be described first below.

[0050] For example, the display panel provided in the embodiments of this application may be an organic light-emitting diode (OLED) display panel.

[0051] like Figure 1 As shown, the display panel 100 provided in this embodiment may have a first display area AA1 and a second display area AA2, and the light transmittance of the first display area AA1 may be greater than that of the second display area AA2. Because the light transmittance of the first display area AA1 is greater than that of the second display area AA2, a photosensitive component can be integrated on the back of the first display area AA1, achieving under-screen integration of a photosensitive component, such as that of a camera. Simultaneously, the first display area AA1 can display an image, increasing the display area of ​​the display panel 100 and achieving a full-screen design for the display device.

[0052] For example, the pixel density (Pixels Per Inch, PPI) of the first display area AA1 can be set to be lower than that of the second display area AA2 to improve the light transmittance of the first display area AA1. Of course, the light transmittance of the first display area AA1 can also be improved in other ways, and this application does not limit this.

[0053] like Figure 2 As shown, the display panel 100 may include a driving device layer 10 and a pixel definition layer 20. At least in the second display area AA2, the driving device layer 10 may be provided with transistors, capacitors, signal lines, etc. The pixel definition layer 20 is disposed on one side of the driving device layer 10. In the first display area AA1, the pixel definition layer 20 is made of a transparent material, and the pixel definition layer 20 may include at least one stacked film layer group 201. The film layer group 201 may include a stacked first sub-film layer 2011 and a second sub-film layer 2012. The second sub-film layer 2012 is located on the side of the first sub-film layer 2011 facing away from the driving device layer 10, and the surface of the first sub-film layer 2011 facing away from the driving device layer 10 is convex. For example, the surface of the first sub-film layer 2011 facing away from the driving device layer 10 may be an arcuate convex surface. The refractive index of the second sub-film layer 2012 is less than the refractive index of the first sub-film layer 2011. In other words, the ratio of the refractive index of the second sub-film layer 2012 to the refractive index of the first sub-film layer 2011 is less than 1.

[0054] Since the surface of the first sub-film layer 2011 facing away from the driving device layer 10 is convex, and the refractive index of the second sub-film layer 2012 is less than that of the first sub-film layer 2011, it can be understood that the first sub-film layer 2011 and the second sub-film layer 2012 constitute a light-focusing structure. For a better understanding of the light-focusing properties of the first sub-film layer 2011 and the second sub-film layer 2012, please refer to... Figure 3 When ambient light L enters the second sub-film layer 2012, due to the difference in refractive index between the first sub-film layer 2011 and the second sub-film layer 2012, the light L is refracted at the interface between the first sub-film layer 2011 and the second sub-film layer 2012. Since the refractive index of the second sub-film layer 2012 is less than that of the first sub-film layer 2011, the light L converges after passing through the interface between the first sub-film layer 2011 and the second sub-film layer 2012, thereby increasing the light flux received by the under-display photosensitive component. For example, if the photosensitive component is a camera, this can improve the imaging effect of the camera.

[0055] It should be noted that, for display panels, a polarizer is generally provided on top of them, which covers the first display area AA1 and the second display area AA2; in addition, if COE technology (color filter film and black matrix) is used to replace the polarizer, then it can be set only in the second display area AA2, and not in the first display area AA1, that is, the first display area AA1 does not have a black matrix.

[0056] Figure 2 The pixel definition layer 20 in the first display area AA1 includes a film layer group 201 as shown in the illustration. This is not intended to limit the present application. For example, the pixel definition layer 20 in the first display area AA1 may include two, three, or even more film layer groups 201 stacked together. For example, as Figure 4 As shown, the pixel definition layer 20 in the first display area AA1 may include two stacked film layer groups 201.

[0057] When there are multiple film layers 201, ambient light can be converged multiple times, thereby improving the light-gathering ability of ambient light and further increasing the light flux received by the under-screen photosensitive component.

[0058] For example, such as Figure 2 As shown, in the second display area AA2, the pixel definition layer 20 may consist of only one film layer, meaning that the pixel definition layer 20 in the second display area AA2 can be a single integrated structure. Of course, if the second display area AA2 also requires sufficient fiber optic bandwidth to pass through the external environment, the structure of the pixel definition layer 20 in the second display area AA2 can be the same as the structure of the pixel definition layer 20 in the first display area AA1.

[0059] In some optional embodiments, the second sub-film layer 2012 can be an ion-implanted film layer, and the first sub-film layer 2011 can be a non-ion-implanted film layer. It is understood that the second sub-film layer 2012 is implanted with specific ions, while the first sub-film layer 2011 is not. Implanting specific ions can reduce the refractive index of the second sub-film layer 2012. Compared to the first sub-film layer 2011, the second sub-film layer 2012 involves an additional ion implantation process step. According to the embodiments of this application, simply implanting ions that can reduce the refractive index into the second sub-film layer 2012 is sufficient to achieve a refractive index of the second sub-film layer 2012 that is lower than that of the first sub-film layer 2011, which is simple and convenient. For example, the ion implantation speed, time, and concentration can be controlled to achieve different ion implantation depths at different locations, thus making the surface of the first sub-film layer 2011 facing away from the driving device layer 10 convex, that is, making the interface between the second sub-film layer 2012 and the first sub-film layer 2011 convex. The embodiments of this application only require improvements to the original pixel definition layer of the display panel, and do not require additional film layers to achieve light-gathering performance, thereby facilitating the thinning of the display panel.

[0060] For example, the body portion of the second sub-film layer 2012 and the first sub-film layer 2011 can be an integral structure. The body portion of the second sub-film layer 2012 can be understood as the structure of the second sub-film layer 2012 before ion implantation, and the structural features of the second sub-film layer 2012 before ion implantation can be the same as the structural features of the first sub-film layer 2011. In this way, a body layer can be integrally formed on one side of the driving device layer 10, and then ion implantation can be performed on the surface of the body layer facing away from the driving device layer 10. For example, the body layer can be formed by inkjet printing or photolithography. It is understood that the portion of the body layer implanted with ions constitutes the second sub-film layer 2012, and the portion of the body layer not implanted with ions constitutes the first sub-film layer 2011. In this embodiment, by setting the body of the second sub-film layer 2012 and the first sub-film layer 2011 as an integral structure, on the one hand, the body of the second sub-film layer 2012 and the first sub-film layer 2011 can be formed simultaneously in the same process step, thus simplifying the process steps; on the other hand, the film layer group 201 can include two sub-film layers with different refractive indices, and the first sub-film layer 2011 and the second sub-film layer 2012 are not physically separated, thus improving the reliability of the pixel definition layer 20.

[0061] Furthermore, when there are multiple film layer groups 201, film layer groups 201 that are closer to the driving device layer 10 can be prepared first. For example, the film layer group 201 closest to the driving device layer 10 can be prepared first, then the second film layer group 201 closest to the driving device layer 10 can be prepared, and finally the film layer group 201 farthest from the driving device layer 10 can be prepared. Here, distance refers to the distance in the thickness direction of the display panel. For any film layer group 201, as described in the example above, a body layer can be integrally formed first, and then ion implantation can be performed on the surface of the body layer facing away from the driving device layer 10 to obtain a film layer group 201 including a first sub-film layer 2011 and a second sub-film layer 2012.

[0062] It should be noted that, as Figure 4 or Figure 5 As shown, when there are multiple film layer groups 201, and in the direction perpendicular to the plane of the display panel, except for the film layer group farthest from the driving device layer 10, the surface of the second sub-film layer 2012 facing away from the driving device layer 10 is concave. For example, after forming the body layer of the film layer group 201, patterning can be performed to make the surface of the body layer facing away from the driving device layer 10 concave, and then ion implantation can be performed to obtain the second sub-film layer 2012 with a concave surface facing away from the driving device layer 10. Alternatively, after forming the body layer of the film layer group 201, ion implantation can be performed, followed by patterning to obtain the second sub-film layer 2012 with a concave surface facing away from the driving device layer 10.

[0063] Of course, the first sub-film layer 2011 and the second sub-film layer 2012 in the same film layer group 201 can also be prepared separately. For example, the first sub-film layer 2011 can be formed by inkjet printing or photolithography, and the surface of the first sub-film layer 2011 facing away from the driving device layer 10 is convex; then the second sub-film layer 2012 can be formed by inkjet printing or photolithography, and the surface of the second sub-film layer 2012 facing away from the driving device layer 10 can be planar. The refractive index of the material used to form the second sub-film layer 2012 can be less than the refractive index of the material used in the first sub-film layer 2011.

[0064] The inventors discovered that implanting fluoride ions (F+) into the second sublayer 2012 can reduce its refractive index. Of course, other low-refractive-index ions can also be implanted into the second sublayer 2012; this application does not limit this application.

[0065] As described above, the body of the second sub-film layer 2012 and the first sub-film layer 2011 can be an integral structure. The materials of the body of the second sub-film layer 2012 and the first sub-film layer 2011 include transparent organic materials. The organic material can be any material used to prepare a conventional pixel definition layer; for example, an organic material with a refractive index of 1.7 to 1.85 can be selected. Examples of organic materials include transparent polyimide (PI), transparent organic adhesives, etc.

[0066] For example, the refractive index of the first sub-film layer 2011 can be 1.7 to 1.85. The refractive index of the second sub-film layer 2012 can be 1.3 to 1.69.

[0067] In some alternative embodiments, such as Figure 2 or Figure 4 As shown, the surface of the pixel definition layer 20 facing away from the driving device layer 10 is planar overall. Figure 2 When the pixel definition layer 20 includes only one film layer group 201, the surface of the second sub-film layer 2012 in the film layer group 201 facing away from the driving device layer 10 is planar. Figure 4 As shown, when the pixel definition layer 20 includes only multiple film layer groups 201, at least the surface of the second sub-film layer 2012 in the outermost film layer group 201 facing away from the driving device layer 10 is planar. In the direction perpendicular to the plane of the display panel, the outermost film layer group 201 is the film layer group that is farthest from the driving device layer 10 among the multiple film layer groups.

[0068] For example, such as Figure 2 or Figure 4 As shown, the pixel definition layer 20 may include multiple openings k, and the light-emitting element 30 of the display panel may be disposed in the openings k. The display panel may also include an encapsulation layer 40, which covers the light-emitting element 30. The encapsulation layer 40 may employ thin-film encapsulation. For example, the encapsulation layer 40 may include stacked organic and inorganic layers, and the organic layer may be prepared by inkjet printing (IJP). To better prevent water and oxygen from entering the light-emitting element 30, the sprayed material needs to be leveled during the inkjet printing process. By making the surface of the pixel definition layer 20 facing away from the driving device layer 10 a plane, it is more conducive to the leveling of the encapsulation material, thereby improving the reliability of the encapsulation layer 40. In addition, since the surface of the pixel definition layer 20 facing away from the driving device layer 10 is a plane, ambient light can enter the pixel definition layer 20 perpendicularly, avoiding refraction of ambient light at the surface of the pixel definition layer 20 facing away from the driving device layer 10, thereby avoiding scattering of ambient light at the surface of the pixel definition layer 20 facing away from the driving device layer 10, which is more conducive to the convergence of ambient light.

[0069] For example, such as Figure 4As shown, when the pixel definition layer 20 includes multiple film layer groups 201, in the direction perpendicular to the plane where the display panel is located, except for the film layer group farthest from the driving device layer 10, the surface of the second sub-film layer 2012 in each film layer group 201 facing away from the driving device layer 10 can all be concave. This allows the first sub-film layer 2011 and the second sub-film layer 2012 in two adjacent film layer groups 201 to also form a light-concentrating structure. Figure 5 As shown, taking two adjacent film layers 201 as film layer 201-1 and film layer 201-2 respectively, the refractive index of the first sub-film layer 2011 in film layer 201-1 can be greater than the refractive index of the second sub-film layer 2012 in film layer 201-2. Since the surface of the second sub-film layer 2012 in film layer 201-2 is concave, the first sub-film layer 2011 in film layer 201-1 and the second sub-film layer 2012 in film layer 201-2 can also form a light-concentrating structure. In this way, ambient light is refracted again at the interface between the first sub-film layer 2011 in film layer 201-1 and the second sub-film layer 2012 in film layer 201-2, and the refracted light converges again.

[0070] In some alternative embodiments, such as Figure 6 As shown, the first display area AA1 includes a light-concentrating area Q, and the first sub-film layer 2011 and the second sub-film layer 2012 are at least partially located in the light-concentrating area Q. The driving device layer located in the first display area AA1 includes signal traces 11. The first sub-film layer 2011 and the second sub-film layer 2012 constitute a light-concentrating structure, allowing some light to bypass the signal traces 11 and be directed to converge in the light-concentrating area Q. The orthographic projection of the focal point F of the light-concentrating structure formed by the first sub-film layer 2011 and the second sub-film layer 2012 onto the plane of the display panel is located within the orthographic projection of the light-concentrating area Q onto the plane of the display panel. That is, from a top-down perspective, the focal point F is within the light-concentrating area Q. This allows as much ambient light as possible to converge into the light-concentrating area Q, thereby further increasing the light flux received by the photosensitive component.

[0071] For example, the orthographic projection of the light-focusing focal point F formed by the first sub-film layer 2011 and the second sub-film layer 2012 onto the plane of the display panel can overlap with the orthographic projection of the center point of the light-focusing area Q onto the plane of the display panel. In this way, as much ambient light as possible can be concentrated towards the light-focusing area Q.

[0072] For example, such as Figure 6 As shown, the first display area AA1 may include a signal line 11, the orthographic projection of which onto the driving device layer 10 overlaps with the orthographic projection of the pixel definition layer 20 onto the driving device layer 10. For example, as... Figure 7As shown, the orthographic projection of the signal line 11 within the first display area AA1 onto the driving device layer 10 can overlap with the orthographic projection of the light-emitting element 30 onto the driving device layer 10. For example... Figure 7 As shown, the area below the pixel definition layer 20 can be the light-concentrating region Q. This application does not limit the specific location of the signal line 11.

[0073] For example, signal line 11 can be a metal trace. Signal line 11 can be a scan line, data line, power line, etc. Alternatively, signal line 11 can also be provided within the second display area AA2. Pixel circuitry (not shown in the figure) can also be provided in the second display area AA2. This application does not limit the specific location of signal line 11 within the second display area AA2. Figure 8 As shown, the display panel 100 may include light-emitting elements 30 of various colors, and the pixel definition layer 20 includes multiple openings k, on which the light-emitting elements 30 may be disposed. For example, the light-emitting elements 30 and the openings may be disposed in a one-to-one correspondence.

[0074] For example, the light-emitting element 30 may include a red light-emitting element 31, a green light-emitting element 32, and a blue light-emitting element 33. The inventors discovered through research that the material of the film layer exhibits dispersion, showing a trend where the refractive index gradually decreases with increasing light wavelength. To ensure the light emission effect of each light-emitting element in the display panel, the refractive index of the second sub-film layer 2012 surrounding the red light-emitting element 31 can be lower than the refractive index of the second sub-film layer 2012 surrounding the green light-emitting element 32, and the refractive index of the second sub-film layer 2012 surrounding the green light-emitting element 32 can be lower than the refractive index of the second sub-film layer 2012 surrounding the blue light-emitting element 33.

[0075] For example, a second sub-film layer 2012 is disposed between the red light-emitting element 31 and the green light-emitting element 32. For instance, half of the second sub-film layer 2012 near the red light-emitting element 31 may belong to the second sub-film layer 2012 surrounding the red light-emitting element 31, and the other half near the green light-emitting element 32 may belong to the second sub-film layer 2012 surrounding the green light-emitting element 32. As another example, one-third of the second sub-film layer 2012 near the red light-emitting element 31 may belong to the second sub-film layer 2012 surrounding the red light-emitting element 31, and two-thirds of the second sub-film layer 2012 near the green light-emitting element 32 may belong to the second sub-film layer 2012 surrounding the green light-emitting element 32. These are merely examples, and this application does not limit the specific dimensions of the second sub-film layer 2012 surrounding each light-emitting element.

[0076] For example, the concentration of ion implantation can be controlled to make the refractive index of the second sub-film layer 2012 around the light-emitting elements of different colors different.

[0077] Based on the same inventive concept, embodiments of this application also provide a method for manufacturing a display panel. For example... Figure 1 As shown, the display panel 100 has a first display area AA1 and a second display area AA2, wherein the light transmittance of the first display area AA1 is greater than that of the second display area AA2. Figure 9 As shown, the method for manufacturing a display panel provided in this application embodiment may include steps S110 and S120.

[0078] S110 provides a driving device layer;

[0079] S120, a pixel definition layer is formed on one side of the driving device layer, and in the first display area, at least one film layer group is stacked in the pixel definition layer. The film layer group includes a stacked first sub-film layer and a second sub-film layer. The second sub-film layer is located on the side of the first sub-film layer that is away from the driving device layer. The surface of the first sub-film layer that is away from the driving device layer is convex. The refractive index of the second sub-film layer is less than the refractive index of the first sub-film layer.

[0080] For example, the method for manufacturing a display panel according to the embodiments of this application can form such a... Figure 2 The structure of the display panel shown, with the surface of the first sub-film layer 2011 facing away from the driving device layer 10 being convex, and the refractive index of the second sub-film layer 2012 being less than that of the first sub-film layer 2011, can be understood as forming a light-focusing structure. Ambient light is refracted at the interface between the first and second sub-film layers 2011 and 2012. Because the refractive index of the second sub-film layer 2012 is less than that of the first sub-film layer 2011, the ambient light converges at this interface, thereby increasing the light flux received by the under-display photosensitive component. For example, if the photosensitive component is a camera, this improves the camera's imaging effect. Furthermore, simply injecting ions that can lower the refractive index into the second sub-film layer 2012 achieves a refractive index lower than that of the first sub-film layer 2011, which is simple and convenient.

[0081] In some optional embodiments, forming a pixel definition layer on one side of the driving device layer in S120 may specifically include the following steps:

[0082] like Figure 10As shown, a body layer 201a is formed on one side of the driving device layer 10. The body layer 201a may include multiple openings. Ions are implanted into the body layer 201a within the first display area AA1. During this process, the ion implantation depth can be varied by controlling the ion implantation speed, time, concentration, etc., thereby making the surface of the first sub-film layer 2011 facing away from the driving device layer 10 convex. That is, the interface between the second sub-film layer 2012 and the first sub-film layer 2011 is convex, thus forming the pixel definition layer 20. Among them, the second sub-film layer 2012 is an ion-implanted film layer, and the first sub-film layer 2011 is a non-ion-implanted film layer. Figure 10 The pixel definition layer 20 includes a single film layer group 201. When the pixel definition layer 20 includes multiple film layer groups 201, the film layer group 201 closest to the driving device layer 10 can be prepared first. For example, the film layer group 201 closest to the driving device layer 10 can be prepared first, followed by a second film layer group 201 closest to the driving device layer 10, and finally the film layer group 201 furthest from the driving device layer 10. Here, distance refers to the distance in the thickness direction of the display panel. For any film layer group 201, as described in the example above, a body layer can be integrally formed first, and then ion implantation can be performed on the surface of the body layer facing away from the driving device layer 10 to obtain a film layer group 201 including a first sub-film layer 2011 and a second sub-film layer 2012. According to the embodiments of this application, the body of the second sub-film layer 2012 and the first sub-film layer 2011 can be integrated into one structure. On the one hand, the body of the second sub-film layer 2012 and the first sub-film layer 2011 can be formed simultaneously in the same process step, which simplifies the process steps. On the other hand, the film layer group 201 can include two sub-film layers with different refractive indices, and the first sub-film layer 2011 and the second sub-film layer 2012 are not physically separated, which can improve the reliability of the pixel definition layer 20.

[0083] For example, the ion implantation rate at different locations can be controlled to obtain, as shown in the figure. Figure 10 The shape of the interface between the second sub-film layer 2012 and the first sub-film layer 2011 is shown.

[0084] For example, the body layer 201a can be formed by inkjet printing or photolithography.

[0085] Optionally, the above steps of injecting ions into the body layer within the first display area may specifically include: injecting fluoride ions into the body layer within the first display area.

[0086] Optionally, the body layer may include organic materials.

[0087] This invention also provides a display device, which may include the display panel 100 of any of the above embodiments. The following description uses one embodiment as an example, in which the display device includes the display panel 100 of the above embodiments.

[0088] Figure 11 This diagram shows a top view of a display device according to an embodiment of the present invention. Figure 12 Show Figure 11 A cross-sectional view along the CC direction. In the display device 1000 of this embodiment, the display panel 100 may be the display panel 100 of one of the above embodiments. The display panel 100 has a first display area AA1 and a second display area AA2, and the light transmittance of the first display area AA1 is greater than the light transmittance of the second display area AA2.

[0089] The display panel 100 includes a first surface S1 and a second surface S2 opposite to each other, wherein the first surface S1 is the display surface. The display device also includes a photosensitive component 200, which is located on the second surface S2 side of the display panel 100 and corresponds to the position of the first display area AA1.

[0090] The photosensitive component 200 can be an image acquisition device used to acquire external image information. In this embodiment, the photosensitive component 200 is a complementary metal-oxide-semiconductor (CMOS) image acquisition device. In other embodiments, the photosensitive component 200 can also be a charge-coupled device (CCD) image acquisition device or other forms of image acquisition device. It is understood that the photosensitive component 200 is not limited to an image acquisition device. For example, in some embodiments, the photosensitive component 200 can also be an infrared sensor, a proximity sensor, an infrared lens, a flood illuminator, an ambient light sensor, and a dot projector, etc., light sensors. In addition, the display device can also integrate other components, such as a handset and a speaker, on the second surface S2 of the display panel 100.

[0091] Figure 11 This embodiment uses a mobile phone as an example to illustrate the display device 1000. It is understood that the display device provided in this application embodiment can be other display devices with display functions, such as wearable products, computers, televisions, and in-vehicle display devices; this application does not impose specific limitations on these. The display device provided in this application embodiment has the beneficial effects of the display panel provided in this application embodiment. For details, please refer to the specific descriptions of the display panel in the above embodiments; these will not be repeated here.

[0092] The embodiments described above are not exhaustive, nor do they limit the application to the specific embodiments described herein. Clearly, many modifications and variations can be made based on the above description. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of this application, thereby enabling those skilled in the art to effectively utilize this application and its modifications. This application is limited only by the claims and their full scope and equivalents.

Claims

1. A display panel having a first display area and a second display area, the first display area having a light transmittance greater than that of the second display area, characterized in that, The display panel comprises: a driving device layer; a pixel definition layer located on one side of the driving device layer, the pixel definition layer is made of transparent material in the first display area, and the pixel definition layer comprises at least one film layer group stacked, the film layer group comprises a first sub-film layer and a second sub-film layer stacked, the second sub-film layer is located on the side of the first sub-film layer away from the driving device layer, the surface of the first sub-film layer away from the driving device layer is convex, and the refractive index of the second sub-film layer is less than the refractive index of the first sub-film layer; The display panel comprises a plurality of color light emitting elements, and the pixel definition layer comprises a plurality of openings, and the light emitting elements are arranged in the openings. The light emitting elements comprise red light emitting elements, green light emitting elements and blue light emitting elements, the refractive index of the second sub-film layer around the red light emitting elements is less than the refractive index of the second sub-film layer around the green light emitting elements, and the refractive index of the second sub-film layer around the green light emitting elements is less than the refractive index of the second sub-film layer around the blue light emitting elements.

2. The display panel of claim 1, wherein, The second sub-film layer is an ion implantation film layer, and the first sub-film layer is a non-ion implantation film layer.

3. The display panel of claim 2, wherein, The body part of the second sub-film layer and the first sub-film layer are in an integrated structure.

4. The display panel of claim 2, wherein, The material of the second sub-film layer comprises fluorine ions.

5. The display panel of claim 2, wherein, The material of the body part of the second sub-film layer and the first sub-film layer comprises an organic material.

6. The display panel of claim 1, wherein, The refractive index of the first sub-film layer is 1.7-1.

85.

7. The display panel of claim 1, wherein, The refractive index of the second sub-film layer is 1.3-1.

69.

8. The display panel of claim 1, wherein, The surface of the pixel definition layer away from the driving device layer is a plane.

9. The display panel of claim 1, wherein, The pixel definition layer comprises at least two film layer groups stacked, and in the direction perpendicular to the plane where the display panel is located, the surface of the second sub-film layer away from the driving device layer in each film layer group except the film layer group farthest from the driving device layer is a concave surface.

10. The display panel of claim 1, wherein, The first display area comprises a light collecting area, the driving device layer in the first display area comprises a signal trace, and the first sub-film layer and the second sub-film layer are at least partially located in the light collecting area, and the first sub-film layer and the second sub-film layer constitute a light collecting structure which can make part of the light avoid the signal trace and be guided to converge to the light collecting area.

11. The display panel of claim 10, wherein, The first sub-film layer and the second sub-film layer constitute a light collecting structure, and the orthographic projection of the focal point of the light collecting structure on the plane where the display panel is located is located in the orthographic projection of the light collecting area on the plane where the display panel is located.

12. The display panel of claim 10, wherein, The first sub-film layer and the second sub-film layer constitute a light collecting structure, and the orthographic projection of the focal point of the light collecting structure on the plane where the display panel is located overlaps with the orthographic projection of the center point of the light collecting area on the plane where the display panel is located.

13. A method for manufacturing a display panel, characterized by, The display panel has a first display area and a second display area, the light transmittance of the first display area is greater than that of the second display area, and the method comprises: providing a driving device layer; A pixel definition layer is formed on one side of the driving device layer, and in the first display area, at least one film layer group is formed in the pixel definition layer, the film layer group comprises a first sub-film layer and a second sub-film layer which are stacked, the second sub-film layer is located on the side of the first sub-film layer away from the driving device layer, the surface of the first sub-film layer away from the driving device layer is convex, and the refractive index of the second sub-film layer is less than the refractive index of the first sub-film layer; The display panel comprises light emitting elements of multiple colors, and the pixel definition layer comprises multiple openings, and the light emitting elements are arranged in the openings. The light emitting elements comprise red light emitting elements, green light emitting elements and blue light emitting elements, the refractive index of the second sub-film layer around the red light emitting elements is less than the refractive index of the second sub-film layer around the green light emitting elements, and the refractive index of the second sub-film layer around the green light emitting elements is less than the refractive index of the second sub-film layer around the blue light emitting elements.

14. The method of claim 13, wherein, The pixel definition layer formed on one side of the driving device layer comprises: A body layer is formed on one side of the driving device layer; Ions are injected into the body layer in the first display area to form the pixel definition layer, wherein the second sub-film layer is an ion injection film layer, and the first sub-film layer is a non-ion injection film layer.

15. The method of claim 14, wherein, The ions injected into the body layer in the first display area comprise: Fluorine ions are injected into the body layer in the first display area.

16. The method of claim 14, wherein, The body layer comprises an organic material.

17. A display device comprising: The display panel is arranged in the camera module. The camera module corresponds to the first display area of the display panel.

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