Display panel and display device

Abstract

The invention discloses a display panel and a display device. The display panel provided by the invention comprises a driving substrate, a pixel definition layer, a light emitting unit, a packaging layer and a first light conversion layer, the pixel definition layer is arranged on the driving substrate, and the pixel definition layer protrudes out of the driving substrate and forms an opening area; the plurality of light-emitting units are arranged in the opening area, and each light-emitting unit comprises a first electrode, a light-emitting layer and a second electrode which are stacked; the packaging layer is arranged on one side, deviating from the driving substrate, of the pixel defining layer and the light emitting unit, a plurality of inclined parts are formed on the packaging layer, and the plurality of inclined parts are arranged corresponding to the non-opening area; the first light conversion layer is located on the surface of the side, away from the pixel definition layer, of the inclined part, the first light conversion layer is used for receiving at least part of incident light beams, the incident light beams comprise invisible light, and the first light conversion layer is used for converting at least part of the invisible light into visible light to be emitted. Therefore, the luminance is compensated by using the converted visible light, and the luminance is improved.

Description

A display panel and display device Technical Field

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

[0002] Organic light-emitting diodes (OLEDs), also known as organic electroluminescence displays (OELDs), are widely used because their display technology offers high contrast, viewing angles, and flexibility that liquid crystal displays cannot achieve, as well as being thin, light, and energy-efficient. They represent a new direction in display technology.

[0003] However, the luminous brightness of existing OLED display panels still needs to be further improved. Summary of the Invention

[0004] The main objective of this application is to provide a display panel and display device that address the aforementioned technical problems existing in the prior art.

[0005] To address the aforementioned issues, this application provides a display panel comprising: a driving substrate, a pixel definition layer, a plurality of light-emitting units, an encapsulation layer, and a first light conversion layer; the pixel definition layer is disposed on the driving substrate, protruding from the driving substrate and forming an opening region; the plurality of light-emitting units are disposed in the opening region, each light-emitting unit including a first electrode, a light-emitting layer, and a second electrode stacked thereon; the encapsulation layer is disposed on the side of the pixel definition layer and the light-emitting units facing away from the driving substrate, the encapsulation layer forming a plurality of inclined portions tilted relative to the driving substrate, the plurality of inclined portions corresponding to the non-opening region; the first light conversion layer is located on the surface of the inclined portions facing away from the pixel definition layer, the first light conversion layer being used to receive at least a portion of the incident light beam, wherein the incident light beam includes invisible light, and the first light conversion layer being used to convert at least a portion of the invisible light into visible light for emission.

[0006] In some embodiments, the inclined portion includes a first inclined surface and a second inclined surface that form an angle with each other, and a first light conversion layer covers the first inclined surface and the second inclined surface.

[0007] In some embodiments, the inclined portion is a protrusion with an included angle greater than 135° and less than or equal to 180°.

[0008] In some embodiments, the display panel further includes a color filter layer disposed on the side of the encapsulation layer away from the driving substrate. The color filter layer includes a plurality of color filter portions arranged in sequence, which are used to filter the received light beam before emission.

[0009] In some embodiments, two adjacent color filters are of different colors, and at least a portion of each of the two adjacent color filters is stacked in the non-opening area.

[0010] In some embodiments, each color filter includes a main body and two extensions. The two extensions are located at both ends of the main body in the arrangement direction of the plurality of color filters. The main body is disposed corresponding to the opening area, and the extensions of two adjacent color filters are stacked in the non-opening area.

[0011] In some embodiments, the thickness of the first light conversion layer is greater than or equal to 0.4 μm and less than or equal to 0.6 μm.

[0012] In some embodiments, the display panel further includes a second light conversion layer, the first electrode is a transparent electrode, the second light conversion layer is disposed on the first electrode, and the second light conversion layer is used to receive the incident light beam and convert at least a portion of the invisible light in the incident light beam into visible light for emission.

[0013] In some embodiments, the first electrode includes a first conductive layer and a second conductive layer disposed at a relative interval, and a second light conversion layer is located between the first conductive layer and the second conductive layer.

[0014] To address the aforementioned problems, this application provides a display device, which includes the aforementioned display panel.

[0015] The beneficial effects of this invention are as follows: Unlike existing technologies, this application provides a display panel comprising: a driving substrate, a pixel definition layer, a plurality of light-emitting units, an encapsulation layer, and a first light conversion layer; the pixel definition layer is disposed on the driving substrate, protruding from the driving substrate and forming an opening region; a plurality of light-emitting units are disposed in the opening region, each light-emitting unit including a first electrode, a light-emitting layer, and a second electrode stacked thereon; the encapsulation layer is disposed on the side of the pixel definition layer and the light-emitting units facing away from the driving substrate, the encapsulation layer forming a plurality of inclined portions relative to the driving substrate, the plurality of inclined portions corresponding to the non-opening region; the first light conversion layer is located on the surface of the inclined portions facing away from the pixel definition layer, the first light conversion layer is used to receive at least a portion of the incident light beam, wherein the incident light beam includes invisible light, and the first light conversion layer is used to convert at least a portion of the invisible light into visible light for emission. Through the above-described embodiments, the first light conversion layer on the inclined portion can receive the incident light beam entering the display panel from the outside and convert at least a portion of the invisible light in the incident light beam into visible light for emission. Thus, the incident light beam can be fully utilized to convert the invisible light in it into visible light to compensate for the luminous brightness of the light-emitting unit, thereby improving the brightness of the display panel. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 is a schematic diagram of the structure of a display device according to one or more embodiments of the present application;

[0018] Figure 2 is a first structural schematic diagram of a display panel according to one or more embodiments of this application;

[0019] Figure 3 is a second structural schematic diagram of a display panel according to one or more embodiments of this application;

[0020] Figure 4 is a third structural schematic diagram of a display panel according to one or more embodiments of this application.

[0021] Reference numerals: Display device 1; Display panel 2; Driving substrate 10; Pixel definition layer 20; Opening area 21; Non-opening area 22; Light-emitting unit 30; First electrode 31; First conductive part 311; Second conductive part 312; Light-emitting layer 32; Second electrode 33; Encapsulation layer 40; Inclined part 41; First inclined surface 411; Second inclined surface 412; Angle 413; Protrusion 414; Groove 415; First light conversion layer 50; Visible light 60; Incident beam 70; Invisible light 71; Color filter layer 80; Color filter part 81; Main body 811; Extension part 812; Second light conversion layer 90. Detailed Implementation

[0022] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0024] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0025] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0026] In the description of the embodiments in this application, the term "and / or" 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 document generally indicates that the preceding and following related objects have an "or" relationship.

[0027] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0028] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0029] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0030] Organic light-emitting diodes (OLEDs), also known as organic electroluminescence displays (OELDs), are widely used because their display technology offers high contrast, viewing angles, and flexibility that liquid crystal displays cannot achieve, as well as being thin, light, and energy-efficient. They represent a new direction in display technology.

[0031] However, the luminous brightness of existing OLED display panels still needs to be further improved.

[0032] This application provides a display device, which may include, but is not limited to, mobile phones, tablets, laptops, desktop computers, terminals, interactive displays, digital audio-visual equipment, Internet of Things (IoT) devices, etc. Interactive displays may include interactive whiteboards, digital advertising interactive screens, and interactive gaming displays, etc., while IoT devices may include smart home devices and smart wearable devices, etc. The display device may include a display panel, which can display images and other functionalities.

[0033] Please refer to FIG1, which is a schematic diagram of the structure of a display device according to one or more embodiments of the present application.

[0034] Display device 1 can be, but is not limited to, mobile phones, computers, etc., wherein the mobile phone can be a regular mobile phone, a feature phone, or a smartphone, etc., and the smartphone can be a flat-screen phone, a curved-screen phone, or a foldable phone, etc. Display device 1 is provided with a display panel 2, which can be located at the head, middle, or tail of display device 1. Display panel 2 can be used to display information on display device 1, for example, display panel 2 can serve as the visual information display part of display device 1. Display panel 2 can also serve as a touch information input part, to facilitate users to operate display device 1 by touching display panel 2, for example, to meet the display and input needs of interface navigation and function switching of display device 1.

[0035] Referring to Figures 2-4, Figure 2 is a first structural schematic diagram of a display panel according to one or more embodiments of the present application; Figure 3 is a second structural schematic diagram of a display panel according to one or more embodiments of the present application; and Figure 4 is a third structural schematic diagram of a display panel according to one or more embodiments of the present application.

[0036] To address the aforementioned problems, this application provides a display panel 2, which includes: a driving substrate 10, a pixel definition layer 20, a plurality of light-emitting units 30, an encapsulation layer 40, and a first light conversion layer 50; the pixel definition layer 20 is disposed on the driving substrate 10, protruding from the driving substrate 10 and forming an opening region 21; the plurality of light-emitting units 30 are disposed in the opening region 21, and each light-emitting unit 30 includes a first electrode 31, a light-emitting layer 32, and a second electrode 33 stacked together; the encapsulation layer 40 is disposed on the pixel... The defining layer 20 and the light-emitting unit 30 are on the side away from the driving substrate 10. The encapsulation layer 40 is formed with a plurality of inclined portions 41 that are inclined relative to the driving substrate 10. The plurality of inclined portions 41 are correspondingly disposed with the non-opening area 22. The first light conversion layer 50 is located on the side surface of the inclined portion 41 away from the pixel defining layer 20. The first light conversion layer 50 is used to receive at least a portion of the incident light beam 70, wherein the incident light beam 70 includes invisible light 71. The first light conversion layer 50 is used to convert at least a portion of the invisible light 71 into visible light 60 for emission.

[0037] The driving substrate 10 can be used to drive the light-emitting unit 30 to emit light. The driving substrate 10 may include, but is not limited to, a silicon-based driving substrate 10, a glass-based driving substrate 10, etc. Taking the silicon-based driving substrate 10 as an example, the silicon-based driving substrate 10 may include a silicon substrate and a driving circuit layer. The driving circuit layer may be disposed on the surface of the silicon substrate. The silicon substrate refers to a substrate based on single-crystal silicon material. The driving circuit layer includes an active driving circuit integrated on the silicon substrate using CMOS (Complementary Metal-Oxide-Semi conductor) technology.

[0038] A pixel definition layer 20 protrudes from the driving substrate 10 and forms an opening region 21, in which multiple light-emitting units 30 are disposed. The pixel definition layer 20 defines the position of the light-emitting units 30 through the opening region 21, allowing the light-emitting units 30 to be positioned appropriately. The material of the pixel definition layer 20 can be an organic material, an organic material with an inorganic coating, or an inorganic material. The organic material of the pixel definition layer 20 includes, but is not limited to, polyimide. The inorganic material of the pixel definition layer 20 includes, but is not limited to, silicon oxide (SiO2), silicon nitride (Si3N4), silicon oxynitride (Si2N2O), magnesium fluoride (MgF2), or combinations thereof. Here, the specific material of the pixel definition layer 20 is not limited and can be selected according to actual needs. Thus, adjacent light-emitting units 30 can be isolated by the pixel definition layer 20, thereby reducing the risk of crosstalk between multiple light-emitting units 30.

[0039] The light-emitting layer 32 of the light-emitting unit 30 can emit a light beam when energized. The light-emitting layers 32 of the multiple light-emitting units 30 have different colors, and each light-emitting layer 32 emits one of red light, blue light, or green light when energized. The first electrode 31 and the second electrode 33 are used to energize the light-emitting layer 32. For example, the first electrode 31 can be an anode electrode and the second electrode 33 can be a cathode electrode.

[0040] The encapsulation layer 40 can cover the side of the light-emitting unit 30 and the pixel definition layer 20 facing away from the driving substrate 10. The encapsulation layer 40 can provide encapsulation and protection for the light-emitting unit 30 and the pixel definition layer 20. The material of the encapsulation layer 40 can be, but is not limited to, inorganic materials, organic materials, or combinations thereof. Here, there is no limitation on the specific material of the encapsulation layer 40. The inclined portion 41 is inclined relative to the driving substrate 10. It should be noted that the surface of the inclined portion 41 facing away from the pixel definition layer 20 is inclined relative to the driving substrate 10. Inclination can mean that at least a portion of the surface of the inclined portion 41 is neither perpendicular nor parallel to the driving substrate 10. The inclined portion 41 is correspondingly disposed to the non-opening area 22. It can be understood that the inclined portion 41 is located between two adjacent light-emitting units 30 to reduce the occlusion of the light-emitting unit 30.

[0041] The first light conversion layer 50 is located on the side surface of the inclined portion 41 facing away from the pixel definition layer 20. The first light conversion layer 50 can receive at least a portion of the incident light beam 70. The incident light beam 70 refers to ambient light entering the interior of the display panel 2 from outside the display panel 2. The incident light beam 70 can be natural light, such as sunlight, or artificial light, such as light emitted by an external light-emitting device. It is understood that the incident light beam 70 can include light beams of various wavelengths. The incident light beam 70 includes invisible light 71, such as infrared light, ultraviolet light (UV), high-energy rays, etc. It should be noted that ultraviolet light and other invisible light 71 cannot be directly used to compensate for the brightness of the display panel 2. The first light conversion layer 50 can convert at least a portion of the invisible light 71 into visible light 60 that is visible to the human eye. For example, the first light conversion layer 50 can be an aerogel.

[0042] For example, Professor Zhao Haibo's team at the National-Local Joint Engineering Laboratory for Environmentally Friendly Polymer Materials, Sichuan University, led by Academician Wang Yuzhong, proposed a novel strategy for intrinsic photoluminescence-based radiative cooling from biomass, developing a recyclable, all-biomass radiative-cooled aerogel with high solar reflectivity. The biomass aerogel (GE / DNA) prepared from gelatin (GE) and DNA possesses unique fluorescence / phosphorescence properties and a highly ordered layered structure. This intrinsic photoluminescence effect allows the aerogel to convert absorbed ultraviolet light into visible light, effectively increasing the solar-weighted reflectivity of the aerogel material in the visible light region (up to 104.0% under simulated sunlight), significantly enhancing the daytime radiative cooling efficiency of the aerogel material. Under high solar irradiance outdoor conditions, the ambient temperature is reduced by up to 16.0℃. Furthermore, utilizing the reversible dissociation-reconstruction characteristics of strong ionic hydrogen bonds at the aerogel interface mediated by water, a scalable and universal water welding strategy was used to achieve large-scale fabrication of aerogel plates with anisotropic porous structures. The long-range ordered pore structure ensures the reliability of the optical properties and overall performance of the aerogel material. In addition, this all-biomass aerogel material has properties such as flame retardancy, rapid self-healing, recyclability, and biodegradability, and is highly environmentally friendly throughout its entire life cycle, from material sourcing and preparation to use and disposal.

[0043] It should be understood that when the first light conversion layer 50 converts invisible light 71, such as ultraviolet light, into visible light 60 and emits it, since the inclined portion 41 is positioned corresponding to the non-opening area 22, the first light conversion layer 50 will emit the converted visible light 60 into the opening area 21, and it will be emitted outward together with the light beam emitted by the light-emitting unit 30, thereby achieving brightness compensation for the light-emitting unit 30 and improving the brightness of the display panel 2. It should be noted that the first light conversion layer 50 has good reflective properties. The visible light 60 in the incident light beam 70 can be directly reflected by the first light conversion layer 50, and it can be emitted outward together with the visible light 60 converted from the invisible light 71 along with the light beam emitted by the light-emitting unit 30.

[0044] Through the above-described embodiments, the first light conversion layer 50 on the inclined portion 41 can receive the incident light beam 70 entering the display panel 2 from the outside, and convert at least a portion of the invisible light 71 in the incident light beam 70 into visible light 60 for emission. Thus, the incident light beam 70 can be fully utilized to convert the invisible light 71 in it into visible light 60 to compensate for the luminous brightness of the light-emitting unit 30, thereby improving the brightness of the display panel 2. In addition, if the ultraviolet light in the incident light beam 70 directly irradiates the internal film layer of the display panel 2, it is easy to cause problems such as aging and overheating of the internal film layer. However, by converting it into visible light 60 with lower energy through the first light conversion layer 50, the risk of aging of the display panel 2 caused by ultraviolet light is mitigated, and the service life of the display panel 2 is extended.

[0045] In some embodiments, the inclined portion 41 includes a first inclined surface 411 and a second inclined surface 412 forming an angle 413 with each other, and a first light conversion layer 50 covers the first inclined surface 411 and the second inclined surface 412. The first light conversion layer 50 on the first inclined surface 411 can emit visible light 60 to the opening area 21 on the side facing the first inclined surface 411, and the second light conversion layer 90 on the second inclined surface 412 can emit visible light 60 to the opening area 21 on the side facing the second inclined surface 412. Exemplarily, an incident light beam 70 entering the display panel 2 perpendicular to the driving substrate 10 in the non-opening area 22 can reach the first light conversion layer 50 at a certain incident angle, and under the conversion and reflection of the first light conversion layer 50, it is emitted into the opening area 21 as visible light 60. The first inclined surface 411 and the second inclined surface 412 can be formed in various ways. For example, the inclined portion 41 can be a protrusion 414, which protrudes from the encapsulation layer 40 of the opening region 21, and the sidewall of the protrusion 414 is used to form the first inclined surface 411 and the second inclined surface 412; or, the inclined portion 41 can be a groove 415, which is recessed from the encapsulation layer 40 of the opening region 21, and the sidewall of the groove 415 is used to form the first inclined surface 411 and the second inclined surface 412. Thus, the first light conversion layer 50 covers the first inclined surface 411 and the second inclined surface 412, thereby facilitating the first light conversion layer 50 to fully utilize the incident beam 70 to perform brightness compensation for the light-emitting units 30 on both sides.

[0046] In some embodiments, the inclined portion 41 is a protrusion 414, with an included angle 413 greater than 135° and less than or equal to 180°. The size of the included angle 413 can be selected according to actual needs. Specifically, the included angle 413 can be, but is not limited to, 135°, 145°, 160°, 175°, 180°, etc. It should be noted that the inclined portion 41 is a protrusion 414, and the protrusion 414 has a first inclined surface 411 and a second inclined surface 412 that are at an included angle 413 to each other. The longitudinal section of the protrusion 414 can be approximately regarded as a triangle. It can be understood that when the included angle 413 is smaller, the protrusion 414 is relatively steeper, and when the included angle 413 is larger, the protrusion 414 is relatively gentler. Correspondingly, when the protrusion 414 is steeper, the viewing angle of the light-emitting unit 30 is smaller, and when the protrusion 414 is gentler, the viewing angle of the light-emitting unit 30 is larger. Therefore, the included angle 413 can be adjusted according to actual needs to meet the viewing angle requirements of the light-emitting unit 30.

[0047] In some embodiments, the display panel 2 further includes a color filter layer 80 disposed on the side of the encapsulation layer 40 facing away from the driving substrate 10. The color filter layer 80 includes a plurality of color filter portions 81 arranged in sequence, which are used to filter the received light beam before emission. The color filter portions 81 may include red, green and blue filters, which are used to select the color of the light transmitted through the color filter layer 80 to form pixel units. The color of the light can be easily adjusted according to the combination of the red, green and blue filters for each pixel, so that the display panel 2 can display a richly colored image. The color filter portions 81 are correspondingly disposed with light-emitting units 30 of the same color. For example, the red filter is correspondingly disposed with the red light-emitting unit 30, the green filter is correspondingly disposed with the green light-emitting unit 30, and the blue filter is correspondingly disposed with the blue light-emitting unit 30. It should be noted that at least a portion of the invisible light 71 in the incident light beam 70 can be transmitted into the display panel 2 through the color filter portions 81, such as ultraviolet light.

[0048] In some embodiments, two adjacent color filters 81 are of different colors, and at least a portion of each of the two adjacent color filters 81 is stacked in the non-aperture area 22. For example, the color filters 81 can be arranged sequentially in red, green, and blue, with at least a portion of the red filter and at least a portion of the green filter stacked in the non-aperture area 22, and at least a portion of the green filter and at least a portion of the blue filter also stacked in the non-aperture area 22. It should be noted that the red filter can block visible light 60 other than red, and the green filter can block visible light 60 other than green. When the red filter and the green filter are stacked, visible light 60 in the incident beam 70 can be blocked, allowing invisible light 71 in the incident beam 70, such as ultraviolet light, to be transmitted into the display panel 2. Therefore, by stacking two adjacent color filter sections 81 at least partially in the non-aperture area 22, visible light 60 is blocked from entering and exiting the display panel 2 in the non-aperture area 22. At the same time, compared with the filtering method of embedding a black matrix in the color filter layer 80, invisible light 71 such as ultraviolet light in the non-aperture area 22 can enter the display panel 2, so that the first light conversion layer 50 can make full use of the invisible light 71 and convert it into visible light 60 for brightness compensation, thereby improving the display brightness of the display panel 2. For example, taking natural light incident perpendicularly from the non-opening area 22 as an example, natural light including invisible light 71 such as ultraviolet light and visible light 60 of various colors is filtered by the color filter layer 80 and incident into the display panel 2. The color filter layer 80 of the non-opening area 22 blocks all visible light 60 and only allows invisible light 71, including ultraviolet light, to enter the display panel 2. The ultraviolet light reaches the first light conversion layer 50 on the inclined portion 41 in a direction perpendicular to the driving substrate 10, and is converted into visible light 60 by the first light conversion layer 50 and emitted to the opening area 21, so as to be emitted outward along with the light beam emitted by the light-emitting unit 30, thereby improving the brightness of the display panel 2.

[0049] In some embodiments, each color filter 81 includes a main body 811 and two extensions 812. The two extensions 812 are located at both ends of the main body 811 in the arrangement direction of the plurality of color filters 81. The main body 811 is correspondingly disposed with respect to the opening area 21, and the extensions 812 of two adjacent color filters 81 are stacked in the non-opening area 22. For example, one of the two extensions 812 of the red filter may be stacked with one extension 812 of the green filter, and the other may be stacked with one extension 812 of the blue filter. The thickness of the extension 812 may be less than the thickness of the main body 811. Optionally, the sum of the thicknesses of the two stacked extensions 812 of two adjacent color filters 81 is equal to the thickness of the main body 811. This facilitates the interconnection of the plurality of color filters 81, improves the thickness uniformity of the color filter layer 80, and thereby improves the color uniformity of the display panel 2.

[0050] In some embodiments, the thickness of the first light conversion layer 50 is greater than or equal to 0.4 μm and less than or equal to 0.6 μm. Exemplarily, the thickness of the first conversion layer may be between 0.4 and 0.5 μm, or between 0.5 and 0.6 μm, or between 0.45 and 0.55 μm. Specifically, the thickness of the first light conversion layer 50 may be 0.4 μm, 0.45 μm, 0.5 μm, 0.55 μm, 0.6 μm, etc., and optionally, the first light conversion layer 50 is 0.5 μm. This facilitates the first light conversion layer 50 in fully utilizing the incident light beam 70 to compensate for the brightness of the display panel 2.

[0051] In some embodiments, the display panel 2 further includes a second light conversion layer 90. The first electrode 31 is a transparent electrode, and the second light conversion layer 90 is disposed on the first electrode 31. The second light conversion layer 90 is used to receive the incident light beam 70 and convert at least a portion of the invisible light 71 in the incident light beam 70 into visible light 60 for emission. The material of the second light conversion layer 90 can be similar to or the same as the material of the first light conversion layer 50. It is understood that the first electrode 31 is located in the opening region 21 and is a transparent electrode. The second light conversion layer 90 can be transmitted through the first electrode 31 to the second light conversion layer 90, thereby facilitating the second light conversion layer 90 to receive the incident light beam 70 incident into the opening region 21 and convert the invisible light 71 in the incident light beam 70 into visible light 60 for emission. At the same time, the second light conversion layer 90 can also reflect and emit a portion of the light beam emitted by the light-emitting layer 32 and the visible light 60 in the incident light beam 70 in the opening region 21 to compensate for the luminous brightness of the light-emitting unit 30, thereby improving the brightness of the display panel 2.

[0052] In some embodiments, the first electrode 31 includes a first conductive layer and a second conductive layer disposed at a distance from each other, and a second light conversion layer 90 is located between the first conductive layer and the second conductive layer. Exemplarily, the first conductive layer and the second conductive layer can be transparent conductive layers, and the material can be, but is not limited to, ITO (Indium Tin Oxide). Specifically, the first electrode 31 can be ITO / second light conversion layer 90 / ITO.

[0053] In summary, this application provides a display panel 2, which includes: a driving substrate 10, a pixel definition layer 20, a plurality of light-emitting units 30, an encapsulation layer 40, and a first light conversion layer 50; the pixel definition layer 20 is disposed on the driving substrate 10, protruding from the driving substrate 10 and forming an opening region 21; the plurality of light-emitting units 30 are disposed in the opening region 21, and each light-emitting unit 30 includes a first electrode 31, a light-emitting layer 32, and a second electrode 33 stacked together; the encapsulation layer 40 is disposed on the pixel definition layer 10. Layer 20 and the light-emitting unit 30 are located on the side opposite to the driving substrate 10. The encapsulation layer 40 has a plurality of inclined portions 41 that are tilted relative to the driving substrate 10, and the plurality of inclined portions 41 are correspondingly disposed with respect to the non-opening area 22. The first light conversion layer 50 is located on the side surface of the inclined portion 41 opposite to the pixel definition layer 20. The first light conversion layer 50 is used to receive at least a portion of the incident light beam 70, wherein the incident light beam 70 includes invisible light 71, and the first light conversion layer 50 is used to convert at least a portion of the invisible light 71 into visible light 60 for emission. Through the above embodiment, the first light conversion layer 50 on the inclined portion 41 can receive the incident light beam 70 entering the display panel 2 from the outside and convert at least a portion of the invisible light 71 in the incident light beam 70 into visible light 60 for emission. Thus, the incident light beam 70 can be fully utilized to convert the invisible light 71 in it into visible light 60 to compensate for the light emission brightness of the light-emitting unit 30, thereby improving the brightness of the display panel 2.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A display panel, characterized in that, The display panel includes: a driving substrate; a pixel definition layer disposed on the driving substrate, the pixel definition layer protruding from the driving substrate and forming an opening area; a plurality of light-emitting units disposed in the opening area, each light-emitting unit including a first electrode, a light-emitting layer and a second electrode stacked thereon; an encapsulation layer disposed on the side of the pixel definition layer and the light-emitting units away from the driving substrate, the encapsulation layer forming a plurality of inclined portions inclined relative to the driving substrate, the plurality of inclined portions corresponding to non-opening areas; and a first light conversion layer located on the surface of the inclined portions away from the pixel definition layer, the first light conversion layer being used to receive at least a portion of the incident light beam; wherein, the incident light beam includes invisible light, and the first light conversion layer is used to convert at least a portion of the invisible light into visible light for emission.

2. The display panel according to claim 1, characterized in that, The inclined portion includes a first inclined surface and a second inclined surface that form an angle with each other, and the first light conversion layer covers the first inclined surface and the second inclined surface.

3. The display panel according to claim 2, characterized in that, The inclined portion is a protrusion, and the included angle is greater than 135° and less than or equal to 180°.

4. The display panel according to any one of claims 1-3, characterized in that, The display panel further includes a color filter layer disposed on the side of the encapsulation layer opposite to the driving substrate. The color filter layer includes a plurality of color filter portions arranged in sequence, which are used to filter the received light beam before emission.

5. The display panel according to claim 4, characterized in that, The two adjacent color filters are of different colors, and at least a portion of each of the two adjacent color filters is stacked in the non-opening area.

6. The display panel according to claim 5, characterized in that, Each of the color filters includes a main body and two extensions. The two extensions are located at both ends of the main body in the arrangement direction of the plurality of color filters. The main body is disposed corresponding to the opening area. The extensions of two adjacent color filters are stacked in the non-opening area.

7. The display panel according to claim 1, characterized in that, The thickness of the first light conversion layer is greater than or equal to 0.4 μm and less than or equal to 0.6 μm.

8. The display panel according to claim 1, characterized in that, The display panel further includes a second light conversion layer. The first electrode is a transparent electrode. The second light conversion layer is disposed on the first electrode. The second light conversion layer is used to receive an incident light beam and to receive at least a portion of the incident light beam, and to convert at least a portion of the invisible light in the incident light beam into visible light for emission.

9. The display panel according to claim 8, characterized in that, The first electrode includes a first conductive layer and a second conductive layer disposed at a relative interval, and the second light conversion layer is located between the first conductive layer and the second conductive layer.

10. A display device, characterized in that, The display device includes a display panel as described in any one of claims 1-9.

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