Display panel, manufacturing method thereof, and display device

Abstract

Embodiments of the present application provide a display panel, a manufacturing method thereof, and a display device. In the display panel provided by the embodiments of the present application, by providing an optical component, the coherence of each light ray in the polarized light emitted by the polarizer can be reduced. Alternatively, through the combination of the optical component and the first backplane, the phase difference of each light ray in the polarized light emitted by the polarizer can be eliminated, and the influence of the phase difference of the first backplane in the display panel on each light ray can be eliminated, thereby reducing the probability of interference phenomena occurring among the light rays in the polarized light. During the shooting process of the display panel with an under-screen camera function, the probability of moiré patterns appearing in the captured image can be reduced or the size of the generated moiré patterns can be decreased, thus ensuring the imaging quality and the user experience.

Description

Technical Field

[0001] The present application relates to the field of display technologies. Specifically, the present application relates to a display panel, a method for manufacturing the same, and a display device. Background Art

[0002] With the development of display technologies, a display panel with an under-screen camera function can expand the display area of a display device to improve the display effect of the display device. The display panel with an under-screen camera function is provided with an under-screen camera area corresponding to an under-screen camera device. When shooting is required, the pixel units in the under-screen camera area stop emitting light; when shooting is not required, the pixel units in the under-screen camera area can emit light to display an image.

[0003] However, for the current display panel with an under-screen camera function, during the shooting process, external light is likely to interfere at the under-screen camera device, resulting in moiré patterns in the captured image, poor imaging quality of the camera device, and seriously affecting the user experience. Summary of the Invention

[0004] Aiming at the shortcomings of the existing methods, the present application provides a display panel, a method for manufacturing the same, and a display device to solve the technical problem that moiré patterns are likely to appear in the images captured by the display panel with an under-screen camera function.

[0005] In a first aspect, an embodiment of the present application provides a display panel, including a display area, and the display area includes a first area corresponding to an under-screen camera device;

[0006] The first area includes:

[0007] A substrate;

[0008] A polarizer, disposed on a first side of the substrate, for converting incident external ambient light into polarized light and emitting it;

[0009] A first backplane, disposed on a second side of the substrate;

[0010] An optical component, disposed on the first side and / or the second side of the substrate, for anisotropically orienting the vibration directions of the respective light rays in the polarized light, or a combination of the optical component and the first backplane for eliminating the phase difference of the respective light rays in the polarized light.

[0011] In a second aspect, an embodiment of the present application provides a display device, including: the display panel provided in the first aspect above.

[0012] In a third aspect, an embodiment of the present application provides a method for manufacturing a display panel, including:

[0013] A interlayer dielectric layer, a planarization layer, a light-emitting layer, and a packaging layer are sequentially formed on a first side of a substrate. The light-emitting layer includes pixel definition structures and light-emitting units spaced apart from each other. During the formation process of at least one of the interlayer dielectric layer, the planarization layer, the pixel definition structure, and the packaging layer, it includes: forming a scattering structure of an optical component such that a positive projection of the scattering structure on the substrate does not overlap with a positive projection of the light-emitting unit on the substrate.

[0014] A polarizer is attached to a side of the packaging layer away from the substrate, and a first backplane is attached to a second side of the substrate.

[0015] In a fourth aspect, an embodiment of the present application provides a method for manufacturing a display panel, including:

[0016] An alignment liquid is coated on a second side of the substrate or a side of the first backplane.

[0017] The alignment liquid is sequentially subjected to an alignment process and a curing process to obtain an alignment layer including alignment grooves; an alignment direction of the alignment grooves has a set angle with a stretching direction of the first backplane.

[0018] A cured liquid crystal layer is formed on a side of the alignment layer such that the cured liquid crystal layer covers the alignment grooves.

[0019] A polarizer is attached to a first side of the substrate, and the first backplane is attached to the substrate.

[0020] The beneficial technical effects brought by the technical solution provided by the embodiment of the present application include:

[0021] In the display panel provided by the embodiment of the present application, by providing an optical component, the coherence of each light ray in the polarized light emitted by the polarizer can be reduced, or, through the combination of the optical component and the first backplane, the phase difference of each light ray in the polarized light emitted by the polarizer can be eliminated, and the influence of the phase difference of the first backplane on each light ray in the display panel can be eliminated, so that the probability of interference of each light ray in the polarized light can be reduced. During the shooting process of the display panel with an under-screen camera function, the probability of water ripples appearing in the captured image can be reduced or the size of the generated water ripples can be reduced, thereby ensuring the imaging quality and the user experience.

[0022] Additional aspects and advantages of the present application will be given in part in the following description, which will become apparent from the following description, or will be understood through the practice of the present application. Description of the Drawings

[0023] The above and / or additional aspects and advantages of the present application will become apparent and be easily understood from the following description of the embodiments in conjunction with the drawings, where:

[0024] Figure 1Schematic structural diagram of the first display panel provided by an embodiment of the present application;

[0025] Figure 2 Provided by an embodiment of the present application Figure 1 Schematic cross-sectional structure view of the first region in the shown display panel in the BB direction;

[0026] Figure 3 Schematic cross-sectional structure view of the first region in the second display panel provided by an embodiment of the present application in the BB direction;

[0027] Figure 4 Schematic cross-sectional structure view of the first region in the third display panel provided by an embodiment of the present application in the BB direction;

[0028] Figure 5 Schematic cross-sectional structure view of the first region in the fourth display panel provided by an embodiment of the present application in the BB direction;

[0029] Figure 6 Schematic cross-sectional structure view of the first region in the fifth display panel provided by an embodiment of the present application in the BB direction;

[0030] Figure 7 Schematic cross-sectional structure view of the first region in the sixth display panel provided by an embodiment of the present application in the BB direction;

[0031] Figure 8 Schematic cross-sectional structure view of the first region in the seventh display panel provided by an embodiment of the present application in the BB direction;

[0032] Figure 9 Schematic cross-sectional structure view of the first region in the eighth display panel provided by an embodiment of the present application in the BB direction;

[0033] Figure 10 Schematic cross-sectional structure view of the first region in the ninth display panel provided by an embodiment of the present application in the BB direction;

[0034] Figure 11 Schematic cross-sectional structure view of the first region in the tenth display panel provided by an embodiment of the present application in the BB direction.

[0035] Explanation of reference numerals:

[0036] 100 - Display area; 101 - First region;

[0037] 10 - Substrate; 20 - Polarizer; 30 - First backplane:

[0038] 40 - Optical component;

[0039] 41 - Scattering structure;

[0040] 42 - Second backplane;

[0041] 431 - Alignment layer; 432 - Solidified liquid crystal layer; 433 - Protective layer; 434 - Sealing frame structure; 435 - Adhesive layer; 436 - Spacer; 437 - First flexible substrate;

[0042] 501 - Interlayer dielectric layer; 502 - Planarization layer; 503 - Light - emitting layer; 5031 - Pixel definition structure; 5032 - Light - emitting unit; 5033 - Anode unit; 504 - Encapsulation layer; 5041 - First inorganic encapsulation layer; 5042 - Organic encapsulation layer; 5043 - Second inorganic encapsulation layer. Detailed implementation manners

[0043] The present application will be described in detail below. Examples of embodiments of the present application are shown in the drawings, where the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. In addition, if the detailed description of the known technology is unnecessary for showing the features of the present application, it will be omitted. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as limiting the present application.

[0044] Those skilled in the art of the present technology can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of those of ordinary skill in the art to which the present application belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have a meaning consistent with the meaning in the context of the prior art and will not be interpreted with an idealized or overly formal meaning unless specifically defined as here.

[0045] Those skilled in the art of the present technology can understand that, unless specifically stated, the singular forms "a", "an", "the" and "said" used herein may also include the plural forms. It should be further understood that the term "comprising" used in the specification of the present application means the presence of the stated features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or their groups. It should be understood that when we say that an element is "connected" to another element, it can be directly connected to other elements, or there may also be intermediate elements. The phrase "and / or" used herein includes all or any unit and all combinations of one or more related listed items.

[0046] The inventors of the present application have conducted research and found that for a current display panel with an under - screen camera function, the display panel includes a polarizer and a backplane, and external ambient light will pass through the polarizer and the backplane in sequence and finally reach the under - screen camera device corresponding to the display panel, thereby realizing the imaging of the under - screen camera device.

[0047] However, due to the limitations of the backplane manufacturing process, currently, the refractive indices of the backplane in the x-direction and y-direction in the rectangular coordinate system are different, resulting in a phase difference among the light rays in the polarized light after passing through the backplane. At the same time, since the lens of the under-screen camera device is equivalent to an analyzer, the lens can separate the light rays with the vibration direction the same as the vibration direction of the lens from each light ray, that is, the combination of the polarizer, the backplane, and the lens constitutes a parallel polarized light interference device, which causes the external ambient light to easily interfere after passing through the polarizer, the backplane, and the lens in sequence. Especially for the external light incident at a large angle, the probability of interference is greater, which easily leads to moiré patterns in the image captured by the under-screen camera device, resulting in poor imaging quality of the under-screen camera device and seriously affecting the user's photo-taking and shooting experience.

[0048] The display panel, its manufacturing method, and the display device provided in this application aim to solve the above technical problems in the prior art.

[0049] The technical solution of this application and how the technical solution of this application solves the above technical problems will be described in detail below with specific embodiments.

[0050] An embodiment of this application provides a display panel. The structural schematic diagram of the display panel is as Figure 1 shown, Figure 1 The BB-direction cross-sectional view of the first area in the shown display panel is as Figure 2 shown. The display panel includes a display area 100, and the display area 100 includes a first area 101 corresponding to the under-screen camera device.

[0051] In an embodiment of this application, the first area 101 includes: a substrate 10, a polarizer 20, a first backplane 30, and an optical component 40. The polarizer 20 is disposed on the first side of the substrate 10 and is used to convert the incident external ambient light into polarized light and emit it; the first backplane 30 is disposed on the second side of the substrate 10; the optical component 40 is disposed on the first side and / or the second side of the substrate 10 and is used to anisotropize the vibration directions of the light rays in the polarized light, or the combination of the optical component 40 and the first backplane 30 is used to eliminate the phase difference among the light rays in the polarized light.

[0052] Those skilled in the art understand that the phase difference refers to the difference in the phases of two light waves at the meeting point, and the phase refers to the position of a light wave in its cycle at a specific moment. In an embodiment of this application, the phase difference among the light rays in the polarized light refers to the difference in the phases of the light rays in the polarized light at the meeting point. The phase difference can be determined according to the optical path difference among the light rays in the polarized light.

[0053] In the display panel provided by the embodiments of the present application, by providing the optical component 40, the vibration directions of the light rays in the polarized light emitted by the polarizer 20 can be made anisotropic, reducing the coherence of the light rays, or, through the combination of the optical component 40 and the first backplane 30, the phase difference of the light rays in the polarized light emitted by the polarizer 20 can be eliminated, and the influence of the phase difference of the first backplane 30 on the light rays in the display panel can be eliminated, thereby reducing the probability of interference of the light rays in the polarized light. During the shooting process of the display panel with an under-screen camera function, the probability of moiré patterns appearing in the captured image can be reduced or the size of the generated moiré patterns can be reduced, thereby ensuring the imaging quality and the user experience.

[0054] In the embodiments of the present application, as Figure 2 shown, the optical component 40 is located on the side of the polarizer 20 close to the substrate 10, so that the polarized light emitted by the polarizer 20 can be incident on the optical component 40. The vibration directions of the light rays in the polarized light are made anisotropic through the optical component 40, thereby reducing the coherence of the light rays in the polarized light, reducing the probability of interference of the light rays in the polarized light, reducing the probability of moiré patterns appearing in the captured image or reducing the size of the generated moiré patterns, and ensuring the imaging quality and the user experience.

[0055] In the embodiments of the present application, the optical component 40 compensates for the phase difference of the light rays in the polarized light, that is, the combination of the optical component 40 and the first backplane 30 can eliminate the phase difference of the light rays in the polarized light, thereby also reducing the coherence of the light rays in the polarized light.

[0056] Specifically, in the embodiments of the present application, since the refractive indices of the first backplane 30 in the x-direction and y-direction in the plane rectangular coordinate system are different, the speeds of the light rays in the polarized light passing through the first backplane 30 are different, resulting in an optical path difference and a phase difference of the light rays after passing through the first backplane 30. By providing the optical component 40 to compensate for the phase difference of the light rays in the polarized light, the phase difference of the light rays in the polarized light can be eliminated after the light rays in the polarized light pass through the optical component 40 and the first backplane 30.

[0057] In the embodiments of the present application, as Figure 2 shown, the optical component 40 is provided on the first side of the substrate 10. The solution of providing the optical component 40 on the second side of the substrate 10 will be described in detail later and will not be elaborated here.

[0058] It should be noted that, as Figure 1 shown, in order to represent the BB cross-sectional direction of the first region 101, Figure 1In the figure, two cross-sectional direction lines are connected by a dashed line. In the actual product, there is no dashed line in the first region 101.

[0059] In an embodiment of the present application, the display panel further includes: an interlayer dielectric layer 501, a planarization layer 502, a light-emitting layer 503, and a packaging layer 504, which are sequentially disposed on the first side of the substrate 10. The light-emitting layer 503 includes pixel definition structures 5031 and light-emitting units 5032 that are spaced apart from each other; the optical component 40 includes a scattering structure 41, and at least one of the interlayer dielectric layer 501, the planarization layer 502, the pixel definition structure 5031, and the packaging layer 504 has the scattering structure 41; the orthographic projection of the scattering structure 41 on the substrate 10 does not overlap with the orthographic projection of the light-emitting unit 5032 on the substrate 10.

[0060] In the embodiment of the present application, an interlayer dielectric layer 501, a planarization layer 502, a light-emitting layer 503, and a packaging layer 504 are sequentially disposed on the first side of the substrate 10. The light-emitting layer 503 includes pixel definition structures 5031 and light-emitting units 5032 that are spaced apart from each other. Optionally, as Figures 3 - 6 shown, each light-emitting unit 5032 is configured with an anode unit 5033, and the packaging layer 504 covers the pixel definition structure 5031 and the light-emitting unit 5032. Optionally, in the embodiment of the present application, the light-emitting unit 5032 includes light-emitting units such as red, green, and blue.

[0061] In the embodiment of the present application, as Figures 3 - 6 shown, the optical component 40 is a scattering structure 41, and at least one of the interlayer dielectric layer 501, the planarization layer 502, the pixel definition structure 5031, and the packaging layer 504 has the scattering structure 41. Specifically, as Figure 3 shown, the interlayer dielectric layer 501 has the scattering structure 41; as Figure 4 shown, the pixel definition structure 5031 has the scattering structure 41; as Figure 5 shown, the packaging layer 504 has the scattering structure 41; as Figure 6 shown, the interlayer dielectric layer 501, the pixel definition structure 5031, and the packaging layer 504 all have the scattering structure 41. The preparation process of the scattering structure 41 will be described in detail later and will not be elaborated here.

[0062] In the embodiment of the present application, the orthographic projection of the scattering structure 41 on the substrate 10 does not overlap with the orthographic projection of the light-emitting unit 5032 on the substrate 10. As Figures 3 - 6As shown, the orthographic projection of the scattering structure 41 on the substrate 10 is in contact with the orthographic projection of the light-emitting unit 5032 on the substrate 10, so as to ensure that the light emitted from the second side of the substrate 10 has passed through the scattering structure 41. Optionally, when there is more than one film layer having the scattering structure 41, the orthographic projection of the scattering structure 41 on the substrate 10 can be set to be separated from the orthographic projection of the light-emitting unit 5032 on the substrate 10.

[0063] Optionally, as Figures 3 - 6 shown, the side of the scattering structure 41 away from the substrate 10 is provided with an uneven structure.

[0064] In an embodiment of the present application, the encapsulation layer 504 of the display panel includes a stacked first inorganic encapsulation layer 5041, an organic encapsulation layer 5042, and a second inorganic encapsulation layer 5043, which are sequentially disposed on the first side of the light-emitting unit 5032 away from the substrate 10, and the polarizer 20 is disposed on the side of the second inorganic encapsulation layer 5043 away from the substrate 10; the first inorganic encapsulation layer 5041 and / or the organic encapsulation layer 5042 has the scattering structure 41.

[0065] In the embodiment of the present application, as Figure 5 and Figure 6 shown, the first inorganic encapsulation layer 5041 of the encapsulation layer 504 covers the pixel defining structure 5031 and the light-emitting unit 5032, the organic encapsulation layer 5042 is disposed on the side of the first inorganic encapsulation layer 5041 away from the substrate 10, and the second inorganic encapsulation layer 5043 is disposed on the side of the organic encapsulation layer 5042 away from the substrate 10.

[0066] At least one of the first inorganic encapsulation layer 5041 and the organic encapsulation layer 5042 has the scattering structure 41. In the embodiment of the present application, the orthographic projection of the scattering structure 41 on the substrate 10 does not overlap with the orthographic projection of the light-emitting unit 5032 on the substrate 10, so as to avoid the scattering structure 41 affecting the emission of the light generated by the light-emitting unit 5032 and avoid the scattering structure 41 affecting the screen display of the first region 101.

[0067] It should be noted that the scattering structure 41 can be disposed in any film layer structure between the polarizer 20 and the substrate 10, and those skilled in the art can set the specific position of the scattering structure 41 according to the actual manufacturing process of the display panel.

[0068] In an embodiment of the present application, the optical component 40 includes a second backplane 42, which is disposed on the side of the first backplane 30 close to or away from the substrate 10; the retardation of the second backplane 42 is the same as that of the first backplane 30, and the stretching direction of the second backplane 42 has a set included angle with the stretching direction of the first backplane 30.

[0069] In the embodiment of the present application, as Figure 7 shown, an interlayer dielectric layer 501, a planarization layer 502, a light-emitting layer 503, and a packaging layer 504 are sequentially disposed on a first side of a substrate 10. The light-emitting layer 503 includes pixel defining structures 5031 and light-emitting units 5032 that are spaced apart from each other.

[0070] In the embodiment of the present application, the optical component 40 is a second backplane 42. The retardation of the second backplane 42 is the same as that of the first backplane 30, and the stretching direction of the second backplane 42 has a set angle with the stretching direction of the first backplane 30, so that the combination of the second backplane 42 and the first backplane 30 can eliminate the retardation of each light ray in polarized light, and thus can also reduce the coherence of each light ray in polarized light. Optionally, in the embodiment of the present application, the set angle is 90°, that is, the stretching direction of the second backplane 42 is perpendicular to the stretching direction of the first backplane 30.

[0071] Specifically, assume that the first backplane 30 is stretched along the x direction, resulting in the refractive index of the first backplane 30 in the x direction being greater than that in the y direction. Then the second backplane 42 is stretched along the y direction, so that the refractive index of the second backplane 42 in the y direction is greater than that in the x direction, and the retardation of the second backplane 42 is the same as that of the first backplane 30. Thus, the second backplane 42 can compensate for the retardation that each light ray in polarized light will generate after passing through the first backplane 30, so that the combination of the second backplane 42 and the first backplane 30 can eliminate the retardation of each light ray in polarized light. Thus, the probability of interference of each light ray in polarized light can be reduced, and thus the probability of water ripples appearing in the captured image or the size of the generated water ripples can be reduced, so that the imaging quality can be guaranteed and the user experience can be guaranteed.

[0072] Those skilled in the art understand that the retardation of the first backplane 30 and the retardation of the second backplane 43 can be determined according to their respective refractive indices and thicknesses. The retardation is equal to the product of the refractive index and the thickness. In the embodiment of the present application, by setting the retardation of the second backplane 42 to be the same as the retardation of the first backplane 30, it is possible to avoid the retardation generated after the same light ray passes through the second backplane 42 from being the same as the retardation generated after passing through the first backplane 30.

[0073] Optionally, in the embodiment of the present application, the manufacturing materials of the first backplane 30 and the second backplane 42 both include PET (PolyEthylene glycol Terephthalate).

[0074] In one embodiment of the present application, the optical component 40 includes an alignment layer 431 and a cured liquid crystal layer 432; the alignment layer 431 includes alignment grooves, and the alignment direction of the alignment grooves has a set angle with the stretching direction of the first backplane 30; the cured liquid crystal layer 432 is disposed on one side of the alignment layer and covers the alignment grooves.

[0075] In the embodiment of the present application, as Figures 8 - 11 shown, the optical component 40 includes an alignment layer 431, the alignment layer 431 includes alignment grooves, and the alignment direction of the alignment grooves has a set angle with the stretching direction of the first backplane 30. Optionally, in the embodiment of the present application, the set angle is 90°, that is, the alignment direction of the alignment grooves is perpendicular to the stretching direction of the first backplane 30. A cured liquid crystal layer 432 is disposed on the side of the alignment layer 431 having the alignment grooves, and the cured liquid crystal layer 432 covers the alignment grooves, so that the liquid crystals in the cured liquid crystal layer 432 are aligned in the alignment direction of the alignment grooves.

[0076] Those skilled in the art understand that, due to the anisotropy of liquid crystal materials, by adjusting the alignment direction of the liquid crystals, the phase difference generated by each ray in the polarized light passing through the first backplane 30 can be compensated by the aligned liquid crystals.

[0077] In the embodiment of the present application, the specific working principle of the combination of the alignment layer 431 and the cured liquid crystal layer 432 is the same as that of the second backplane 42, and will not be elaborated here. The combination of the alignment layer 431, the cured liquid crystal layer 432, and the first backplane 30 can eliminate the phase difference of each ray in the polarized light, thereby reducing the probability of interference of each ray in the polarized light, and thus reducing the probability of water ripples appearing in the captured image or reducing the size of the generated water ripples, thereby ensuring the imaging quality and the user experience.

[0078] In one embodiment of the present application, along the direction perpendicular to the substrate 10, the size of the cured liquid crystal layer 432 is proportional to the ratio of the phase difference of the first backplane 30 to the birefringence anisotropy coefficient of the cured liquid crystal layer 432.

[0079] In the embodiment of the present application, the size of the cured liquid crystal layer 432 along the direction perpendicular to the substrate 10, that is, the thickness of the cured liquid crystal layer 432, is proportional to the ratio of the phase difference of the first backplane 30 to the birefringence anisotropy coefficient of the cured liquid crystal layer 432.

[0080] Optionally, the thickness of the cured liquid crystal layer 432 is equal to the ratio of the phase difference of the first backplane 30 to the birefringence anisotropy coefficient of the cured liquid crystal layer 432. For example, if the phase difference of the first backplane 30 is 100 nanometers and the birefringence anisotropy coefficient Δn of the double-cured liquid crystal layer 432 is 0.05, then the thickness of the cured liquid crystal layer 432 is 2 micrometers.

[0081] In one embodiment of the present application, as Figures 8 - 11 shown, the cured liquid crystal layer 432 includes spacers 436, and the spacers 436 play a supporting role to keep the thickness of the cured liquid crystal layer 432 stable. Optionally, the shape of the spacers 436 is spherical, and the diameter of the spherical spacers 436 can be determined according to the thickness of the cured liquid crystal layer 432.

[0082] In one embodiment of the present application, as Figures 8 - 11 shown, a protective layer 433 is provided on the side of the cured liquid crystal layer 432 away from the alignment layer 431.

[0083] In one embodiment of the present application, as Figure 9 and Figure 10 shown, a first flexible substrate 437 is provided on the side of the alignment layer 431 away from the cured liquid crystal layer 432. In the example of the present application, the first flexible substrate 437 is a zero-order retardation film material, so as to avoid affecting the retardation of the light passing through the first flexible substrate 437.

[0084] In one embodiment of the present application, as Figures 8 - 11 shown, a sealing frame structure 434 is provided between the alignment layer 431 and the protective layer 433, and the cured liquid crystal layer 432 is filled in the closed space formed by enclosing the alignment layer 431, the protective layer 433 and the sealing frame structure 434.

[0085] In one embodiment of the present application, in order to ensure the connection strength between each film layer, as Figure 8 shown, a bonding layer 435 is provided between the protective layer 433 and the first backplane 30; as Figure 9 shown, a bonding layer 435 is provided between the protective layer 433 and the substrate 10, and between the first flexible substrate 437 and the first backplane 30; as Figure 10 shown, a bonding layer 435 is provided between the substrate 10 and the first backplane 30, and between the protective layer 433 and the first backplane 30; as Figure 11 shown, a bonding layer 435 is provided between the protective layer 433 and the substrate 10.

[0086] Optionally, in the embodiment of the present application, the bonding layer 435 is PSA (Pressure Sensitive Adhesive).

[0087] It should be noted that in the display panel provided in the embodiment of the present application, the scattering structure 41 and the second backplane 42 can be provided at the same time, or the scattering structure 41, the alignment layer 431 and the cured liquid crystal layer 432 can be provided at the same time.

[0088] Based on the same inventive concept, embodiments of the present application provide a display device, which includes: the display panel provided in any one of the above embodiments.

[0089] In the embodiments of the present application, since the display device includes any one of the display panels provided in the foregoing embodiments, for the principles and technical effects, please refer to the foregoing embodiments and will not be elaborated herein.

[0090] Optionally, in the embodiments of the present application, the display device is a mobile phone, a tablet computer, etc. with an under-screen camera function.

[0091] Based on the same inventive concept, embodiments of the present application provide a method for manufacturing a display panel, which includes:

[0092] A interlayer dielectric layer 501, a planarization layer 502, a light-emitting layer 503, and a packaging layer 504 are sequentially formed on the first side of the substrate 10. The light-emitting layer 503 includes pixel definition structures 5031 and light-emitting units 5032 that are spaced apart from each other. During the manufacturing process of at least one of the interlayer dielectric layer 501, the planarization layer 502, the pixel definition structure 5031, and the packaging layer 504, it includes: forming a scattering structure 41 of the optical component 40, such that the orthographic projection of the scattering structure 41 on the substrate 10 does not overlap with the orthographic projection of the light-emitting unit 5032 on the substrate 10.

[0093] A polarizer 20 is attached to the side of the packaging layer 504 away from the substrate 10, and a first backplane 30 is attached to the second side of the substrate 10.

[0094] In an embodiment of the present application, the interlayer dielectric layer 501 is formed on the first side of the substrate 10, and a set area of the interlayer dielectric layer 501 is patterned to obtain the scattering structure 41 of the optical component 40. Optionally, the set area of the interlayer dielectric layer 501 can be patterned by using an HTM (Half Tone Mask) process to obtain the scattering structure 41 with a concavo-convex structure. Then, the planarization layer 502, the light-emitting layer 503, and the packaging layer 504 are sequentially formed on the side of the interlayer dielectric layer 501 away from the substrate 10, such that the orthographic projection of the scattering structure 41 on the substrate 10 does not overlap with the orthographic projection of the light-emitting unit 5032 on the substrate 10, thereby manufacturing the display panel as Figure 3 shown.

[0095] In one embodiment of the present application, an interlayer dielectric layer 501 and a planarization layer 502 are sequentially formed on the first side of the substrate 10. A set area of the planarization layer 502 is patterned to obtain a scattering structure 41 of the optical component 40. Then, a light-emitting layer 503 and a packaging layer 504 are sequentially formed on the side of the planarization layer 502 away from the substrate 10, such that the orthographic projection of the scattering structure 41 on the substrate 10 does not overlap with the orthographic projection of the light-emitting unit 5032 on the substrate 10.

[0096] In one embodiment of the present application, an interlayer dielectric layer 501, a planarization layer 502, and a light-emitting layer 503 are sequentially formed on the first side of the substrate 10. The light-emitting layer 503 includes pixel definition structures 5031 and light-emitting units 5032 that are spaced apart from each other. The pixel definition structures 5031 are patterned to obtain a scattering structure 41 of the optical component 40. Then, a packaging layer 504 is formed on the side of the light-emitting layer 503 away from the substrate 10, such that the orthographic projection of the scattering structure 41 on the substrate 10 does not overlap with the orthographic projection of the light-emitting unit 5032 on the substrate 10, thereby obtaining a display panel as Figure 4 shown.

[0097] In one embodiment of the present application, an interlayer dielectric layer 501, a planarization layer 502, a light-emitting layer 503, and a first inorganic packaging layer 5041 are sequentially formed on the first side of the substrate 10. A set area of the first inorganic packaging layer 5041 is patterned to obtain a scattering structure 41 of the optical component 40, such that the orthographic projection of the scattering structure 41 on the substrate 10 does not overlap with the orthographic projection of the light-emitting unit 5032 on the substrate 10. Then, an organic packaging layer 5042 and a second inorganic packaging layer 5043 are sequentially formed on the side of the first inorganic packaging layer 5041 away from the substrate 10, obtaining a packaging layer 504 including the first inorganic packaging layer 5041, the organic packaging layer 5042, and the second inorganic packaging layer 5043, thereby obtaining a display panel as Figure 5 shown.

[0098] In one embodiment of the present application, an interlayer dielectric layer 501 is prepared on the first side of the substrate 10, and a set area of the interlayer dielectric layer 501 is patterned to obtain a scattering structure 41 of the optical component 40. Then, a planarization layer 502 and a light-emitting layer 503 are sequentially prepared on the side of the interlayer dielectric layer 501 away from the substrate 10. During the preparation of the light-emitting layer 503, a pixel definition structure 5031 is patterned to obtain the scattering structure 41 of the optical component 40. Next, a first inorganic encapsulation layer 5041 is prepared on the side of the light-emitting layer 503 away from the substrate 10, and a set area of the first inorganic encapsulation layer 5041 is patterned to obtain the scattering structure 41 of the optical component 40. In the embodiment of the present application, the orthographic projection of the scattering structure 41 on the substrate 10 does not overlap with the orthographic projection of the light-emitting unit 5032 on the substrate 10. Then, an organic encapsulation layer 5042 and a second inorganic encapsulation layer 5043 are sequentially prepared on the side of the first inorganic encapsulation layer 5041 away from the substrate 10, thereby obtaining a display panel as shown in Figure 6 shown.

[0099] Based on the same inventive concept, the embodiment of the present application provides another method for manufacturing a display panel, and the method includes:

[0100] Coat an alignment liquid on the second side of the substrate 10 or on one side of the first backplane 30.

[0101] Perform an alignment process and a curing process on the alignment liquid in sequence to obtain an alignment layer 431 including alignment grooves; the alignment direction of the alignment grooves has a set angle with the stretching direction of the first backplane 30. Optionally, the alignment direction of the alignment grooves is perpendicular to the stretching direction of the first backplane 30.

[0102] Prepare a cured liquid crystal layer 432 on one side of the alignment layer 431 so that the cured liquid crystal layer 432 covers the alignment.

[0103] Attach a polarizer 20 to the first side of the substrate 10, and then attach the first backplane 30 to the substrate 10.

[0104] In one embodiment of the present application, an interlayer dielectric layer 501, a planarization layer 502, a light-emitting layer 503, and an encapsulation layer 504 are sequentially prepared on the first side of the substrate 10. Then, the substrate 10 is flipped, and an alignment liquid is coated on the second side of the substrate 10. Optionally, the alignment liquid is PI (PolyImide), and an alignment process and a curing process are performed on the alignment liquid in sequence to obtain an alignment layer 431 including alignment grooves, so that the alignment direction of the alignment grooves is perpendicular to the stretching direction of the first backplane 30. Optionally, the alignment process includes UV (Ultra-Violet rays) alignment and rubbing alignment, and the curing process includes heat curing.

[0105] Next, a liquid crystal doped with a photo-curing agent is coated on one side of the alignment layer 431. The liquid crystal is aligned according to the alignment grooves. Then, spherical spacers 436 are sprayed. Subsequently, by using partial-directional ultraviolet irradiation, the liquid crystal is cured, thereby preparing a cured liquid crystal layer 432. A protective layer 433 is prepared on one side of the cured liquid crystal layer 432. Next, the first backplane 30 is attached to the protective layer 433, and the first backplane 30 and the protective layer 433 are connected through an adhesive layer 435; a polarizer 20 is attached to the side of the encapsulation layer 504 away from the substrate 10, thereby preparing a display panel as shown in Figure 8 the figure.

[0106] In an embodiment of the present application, the display functional film layer structure and the optical component 40 including the alignment layer 431 and the cured liquid crystal layer 432 can be prepared separately. This can improve the production rate of the display panel.

[0107] Specifically, an interlayer dielectric layer 501, a planarization layer 502, a light-emitting layer 503, and an encapsulation layer 504 are sequentially prepared on the first side of the substrate 10 to obtain each display functional film layer structure. Then, a polarizer 20 is attached to the side of the encapsulation layer 504 away from the substrate 10.

[0108] A first flexible substrate 437 is provided. An alignment layer 431, a cured liquid crystal layer 432, and a protective layer 433 are sequentially prepared on one side of the first flexible substrate 437. Then, the protective layer 433 is connected to the second side of the substrate 10 through an adhesive layer 435, and the first backplane 30 is attached to the other side of the first flexible substrate 437, thereby preparing a display panel as shown in Figure 9 the figure.

[0109] In an embodiment of the present application, the display functional film layer structure and the optical component 40 including the alignment layer 431 and the cured liquid crystal layer 432 can also be prepared separately.

[0110] Specifically, an interlayer dielectric layer 501, a planarization layer 502, a light-emitting layer 503, and an encapsulation layer 504 are sequentially prepared on the first side of the substrate 10 to obtain each display functional film layer structure. Then, a polarizer 20 is attached to the side of the encapsulation layer 504 away from the substrate 10, and a first backplane 30 is attached to the second side of the substrate 10.

[0111] A first flexible substrate 437 is provided. An alignment layer 431, a cured liquid crystal layer 432, and a protective layer 433 are sequentially prepared on one side of the first flexible substrate 437. Then, the protective layer 433 is attached to the first backplane 30, and the protective layer 433 and the first backplane 30 are connected through an adhesive layer 435, thereby preparing a display panel as shown in Figure 10 the figure.

[0112] In one embodiment of the present application, the display functional film layer structure and the optical component 40 including the alignment layer 431 and the cured liquid crystal layer 432 can also be prepared separately.

[0113] An alignment liquid is coated on one side of the first backplane 30, and the alignment liquid is subjected to alignment treatment and curing treatment in sequence to obtain the alignment layer 431 including alignment grooves, such that the alignment direction of the alignment grooves is perpendicular to the stretching direction of the first backplane 30. Then, the cured liquid crystal layer 432 is prepared on one side of the alignment layer 431. The cured liquid crystal layer 432 includes spherical spacers 436, and then the protective layer 433 is prepared on one side of the cured liquid crystal layer 432.

[0114] Then, the first backplane 30 is attached to the substrate 10. Specifically, the protective layer 433 is attached to the second side of the substrate 10, and the substrate 10 and the protective layer 433 are connected through the adhesive layer 435, thereby preparing the display panel as Figure 11 shown.

[0115] It should be noted that in the method for preparing the display panel provided in the embodiment of the present application, after each display functional film layer structure is prepared, the polarizer 20 can be attached to the side of the encapsulation layer 504 away from the substrate 10; or after the display functional film layer structure and the optical component 40 including the alignment layer 431 and the cured liquid crystal layer 432 are prepared, finally the polarizer 20 is attached to the encapsulation layer 504 to obtain the display panel shown in any one of the embodiments of the present application Figures 8 - 11 in the present application.

[0116] Applying the embodiment of the present application can at least achieve the following beneficial effects:

[0117] In the display panel provided in the embodiment of the present application, by providing the optical component 40, the vibration directions of the light rays in the polarized light emitted by the polarizer 20 can be made anisotropic, reducing the coherence of the light rays, or by the combination of the optical component 40 and the first backplane 30, the phase difference of the light rays in the polarized light emitted by the polarizer 20 can be eliminated, and the influence of the phase difference of the first backplane 30 in the display panel on the light rays can be eliminated, thereby reducing the probability of interference of the light rays in the polarized light. During the shooting process of the display panel with an under-screen camera function, the probability of water ripples appearing in the captured image can be reduced or the size of the generated water ripples can be reduced, thereby ensuring the imaging quality and the user experience.

[0118] Those skilled in the art of the present technology can understand that the various operations, methods, steps, measures, and solutions in the processes discussed in the present application can be alternated, changed, combined, or deleted. Further, other steps, measures, and solutions in the various operations, methods, and processes discussed in the present application can also be alternated, changed, rearranged, decomposed, combined, or deleted. Further, the steps, measures, and solutions in the prior art that are the same as those disclosed in the various operations, methods, and processes in the present application can also be alternated, changed, rearranged, decomposed, combined, or deleted.

[0119] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present application.

[0120] The terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0121] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0122] In the description of this specification, specific features, structures, materials, or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0123] The above are only some embodiments of the present application. It should be noted that for those of ordinary skill in the art of the present technology, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A display panel, comprising a display area, characterized in that, the display area includes a first area corresponding to an under-screen camera device; the first area includes: a substrate; a polarizer disposed on a first side of the substrate for converting incident external ambient light into polarized light and emitting it; a first backplane disposed on a second side of the substrate; an optical component disposed on the first side and / or the second side of the substrate for anisotropically orienting the vibration directions of the light rays in the polarized light, or a combination of the optical component and the first backplane for eliminating the phase difference of the light rays in the polarized light; the optical component includes an alignment layer and a cured liquid crystal layer; the alignment layer includes alignment grooves, and the alignment direction of the alignment grooves has a set angle with the stretching direction of the first backplane; the cured liquid crystal layer is disposed on one side of the alignment layer and covers the alignment grooves.

2. The display panel according to claim 1, characterized in that, further comprising: an interlayer dielectric layer, a planarization layer, a light-emitting layer, and a packaging layer, which are sequentially disposed on the first side of the substrate, and the light-emitting layer includes pixel definition structures and light-emitting units spaced apart from each other; the optical component includes a scattering structure, and at least one of the interlayer dielectric layer, the planarization layer, the pixel definition structure, and the packaging layer has the scattering structure; the orthographic projection of the scattering structure on the substrate does not overlap with the orthographic projection of the light-emitting unit on the substrate.

3. The display panel according to claim 2, characterized in that, the packaging layer includes a stacked first inorganic packaging layer, an organic packaging layer, and a second inorganic packaging layer, which are sequentially disposed on a first side of the light-emitting unit away from the substrate, and the polarizer is disposed on a side of the second inorganic packaging layer away from the substrate; the first inorganic packaging layer and / or the organic packaging layer has the scattering structure.

4. The display panel according to claim 1, characterized in that, along the direction perpendicular to the substrate, the size of the cured liquid crystal layer is proportional to the ratio of the phase difference of the first backplane and the birefringence anisotropy coefficient of the cured liquid crystal layer.

5. The display panel according to claim 1, characterized in that, further comprising at least one of the following: spacers are included in the cured liquid crystal layer; the optical component includes a protective layer disposed on a side of the cured liquid crystal layer away from the alignment layer; the optical component includes a first flexible substrate disposed on a side of the alignment layer away from the cured liquid crystal layer, and the first flexible substrate is a zero-phase difference film material.

6. The display panel according to claim 1, characterized in that, the set angle is 90°.

7. A display device, characterized in that, comprising: the display panel according to any one of claims 1-6.

8. A method for manufacturing the display panel according to claim 2 or 3, characterized in that, comprising: sequentially preparing an interlayer dielectric layer, a planarization layer, a light-emitting layer, and a packaging layer on a first side of the substrate, and the light-emitting layer includes pixel definition structures and light-emitting units spaced apart from each other; During the preparation process of at least one of the interlayer dielectric layer, the planarization layer, the pixel definition structure, and the encapsulation layer, it includes: preparing a scattering structure of an optical component such that the orthographic projection of the scattering structure on the substrate does not overlap with the orthographic projection of the light-emitting unit on the substrate; Attach a polarizer on the side of the encapsulation layer away from the substrate, and attach a first backplane on the second side of the substrate.

9. A method for manufacturing a display panel according to any one of claims 1-6, characterized in that, it includes: Coat an alignment liquid on the second side of the substrate or on one side of the first backplane; Perform alignment treatment and curing treatment on the alignment liquid in sequence to obtain an alignment layer including alignment grooves; the alignment direction of the alignment grooves has a set angle with the stretching direction of the first backplane; Prepare a cured liquid crystal layer on one side of the alignment layer such that the cured liquid crystal layer covers the alignment grooves; Attach a polarizer on the first side of the substrate, and attach the first backplane to the substrate.

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