Display panel and display device

Abstract

The present application provides a display panel and a display device. The display panel has a first display area, and the display panel includes a substrate, a first pixel unit, and a light control unit. The first pixel unit is disposed on one side of the substrate, and a plurality of first pixel units are spaced apart in the first display area. The first pixel unit is configured to emit a first light beam at least along a first direction, and the first direction is parallel to the plane where the substrate is located. The light control unit is located in the first display area and is disposed on at least one side of the first pixel unit in the first direction. The light control unit has a reflection state and a transmission state. In the reflection state, the light control unit is configured to reflect at least part of the first light beam out of the display panel. In the transmission state, the light control unit is configured to transmit at least part of a second light beam incident along a second direction. The display panel can reduce the mutual influence between the setting of the under-screen device and the display effect of the display panel, enabling the two to coexist.

Description

Technical Field

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

[0002] The rapid development of display technologies has promoted the development of high screen-to-body ratio of display devices, that is, full-screen displays have entered the field of vision of users, providing users with a better visual experience, and thus making display devices with full screens the focus of attention in the industry.

[0003] Currently, in display devices such as mobile phones and tablets, when it is necessary to integrate light-blocking devices such as front cameras, infrared light sensors, and proximity light sensors, under-screen technologies are used to achieve full-screen displays of the display devices. However, in related technologies, the setting of under-screen devices and full-screen displays affect each other, resulting in the inability of the two to coexist. Summary of the Invention

[0004] The present application provides a display panel and a display device, which can reduce the mutual influence between the setting of under-screen devices and the display effect of the display panel, and enable the two to coexist.

[0005] In a first aspect of the present application, a display panel is provided. The display panel has a first display area, and the display panel includes a substrate, a first pixel unit, and a light control unit. The first pixel unit is disposed on one side of the substrate, and a plurality of the first pixel units are spaced apart and distributed in the first display area. The first pixel unit is configured to emit a first light beam at least along a first direction, and the first direction is parallel to the plane where the substrate is located. The light control unit is located in the first display area and is disposed on at least one side of the first pixel unit in the first direction. The light control unit has a reflection state and a transmission state. In the reflection state, the light control unit is configured to reflect at least a part of the first light beam out of the display panel. In the transmission state, the light control unit is configured to transmit at least a part of a second light beam incident along a second direction, where the second direction intersects the first direction.

[0006] In the display panel provided by the embodiment of the present application, the first pixel unit can emit a first light beam along a first direction, which is parallel to the plane where the substrate is located. The light control unit is disposed on at least one side of the first pixel unit in the first direction. When the display panel displays an image, that is, when the light control unit is in the reflective state, the light control unit reflects at least part of the first light beam out of the display panel to improve the display effect of the first display area, thereby improving the display uniformity of the display panel. When the under-screen device of the display panel needs to receive a second light beam incident along a second direction, that is, when the light control unit is in the transmissive state, it can transmit at least part of the second light beam incident along the second direction. Furthermore, while being able to reduce the display area of the first pixel unit, it can also increase the transmission area of the second light beam, thereby helping the under-screen device to achieve its function. Therefore, the display panel provided by the embodiment of the present application can reduce the mutual influence between the setting of the under-screen device and the display effect of the display panel, enabling the two to coexist.

[0007] According to any of the foregoing embodiments of the first aspect of the present application, the first pixel unit includes a first electrode, a light-emitting layer, and a second electrode. The first electrode has a first surface disposed opposite to the light control unit along the first direction. The light-emitting layer is disposed on at least one of the first surfaces, and the second electrode is disposed on the surface of the light-emitting layer facing away from the first electrode. Optionally, the material of the first electrode includes a light-blocking material. Optionally, the second electrode is a transparent electrode.

[0008] According to any of the foregoing embodiments of the first aspect of the present application, the first electrode further includes two second surfaces disposed opposite to each other along the second direction. The first surface is connected between the two second surfaces, and the light-emitting layer is disposed on the second surface of the first electrode facing away from the substrate and the two first surfaces. Optionally, at least two of the light control units are respectively disposed on both sides of the same first pixel unit. Optionally, the light control unit surrounds the first pixel unit.

[0009] According to any of the foregoing embodiments of the first aspect of the present application, the light control unit includes a light-transmitting portion and a liquid crystal layer. The light-transmitting portion has an incident surface. The liquid crystal layer is disposed on the incident surface, and the liquid crystal layer is configured to respond to a preset voltage to switch the light control unit between the reflective state and the transmissive state.

[0010] According to any of the foregoing embodiments of the first aspect of the present application, in the direction away from the substrate, the incident surface is inclined away from the first pixel unit. Optionally, the included angle between the incident surface and the plane where the substrate is located is 30° - 60°.

[0011] According to any of the foregoing embodiments of the first aspect of the present application, there is a gap between the liquid crystal layer and the first pixel unit.

[0012] According to any of the foregoing embodiments of the first aspect of the present application, along the second direction, the height of the light control unit is greater than or equal to the height of the first pixel unit.

[0013] According to any of the foregoing embodiments of the first aspect of the present application, the display panel further has a second display area surrounding at least part of the first display area; the display panel further includes second pixel units disposed on the substrate, and a plurality of the second pixel units are distributed at intervals in the second display area; in the reflective state, the display area of the second pixel unit is less than or equal to the display area of the first pixel unit, and in the transmissive state, the display area of the second pixel unit is greater than the display area of the first pixel unit. Optionally, in the reflective state, the display area of the second pixel unit is equal to the display area of the first pixel unit.

[0014] According to any of the foregoing embodiments of the first aspect of the present application, the pixel density of the second pixel unit in the second display area is greater than or equal to the pixel density of the first pixel unit in the first display area.

[0015] The second aspect of the present application provides a display device including the display panel in any of the foregoing embodiments of the first aspect of the present application. Description of the Drawings

[0016] By reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, other features, objects, and advantages of the present application will become more apparent, wherein the same or similar reference numerals represent the same or similar features, and the drawings are not drawn to actual scale.

[0017] Figure 1 Shows a top view structural schematic diagram of a display panel provided by an embodiment of the present application.

[0018] Figure 2 Shows Figure 1 A cross-sectional structural schematic diagram of the first display area of the display panel in

[0019] Figure 3 Shows Figure 2 A cross-sectional structural schematic diagram of the first display area in the display state in

[0020] Figure 4 Shows Figure 2 A cross-sectional structural schematic diagram of the first display area in the non-display state in

[0021] Figure 5 Shows Figure 3 A top view structural schematic diagram of the first display area in the display state in

[0022] Figure 6 shows Figure 4 a top - view structural schematic diagram of the first display area in a non - display state in

[0023] Figure 7 a top - view structural schematic diagram of a display panel provided by another embodiment of the present application.

[0024] Figure 8 shows Figure 7 a partially enlarged structural schematic diagram of the first display area and the second display area at Q in in a display state, where each pixel unit filled with a pattern represents its display area.

[0025] Figure 9 shows Figure 7 a partially enlarged structural schematic diagram of the first display area and the second display area at Q in in a non - display state, where each pixel unit filled with a pattern represents its display area.

[0026] Figure 10 a top - view structural schematic diagram of a display device provided by an embodiment of the present application.

[0027] Figure 11 shows Figure 10 a cross - sectional structural schematic diagram in the D - D direction in

[0028] Explanation of reference numerals:

[0029] 1000 - display device;

[0030] 100 - display panel, AA1 - first display area, AA2 - second display area, S1 - display surface, S2 - non - display surface;

[0031] 10 - substrate;

[0032] 20 - first pixel unit, 21 - first electrode, 211 - first surface, 212 - second surface, 22 - light - emitting layer, 23 - second electrode;

[0033] 30 - light - control unit, 31 - light - transmissive part, 32 - liquid - crystal layer;

[0034] 40 - second pixel unit;

[0035] X - first direction, Y - second direction;

[0036] F1 - first light beam, F2 - second light beam;

[0037] 200 - photosensitive component. Detailed implementation manners

[0038] The features and exemplary embodiments of various aspects of the present application will be described in detail below. To make the objectives, technical solutions, and advantages of the present application clearer and more understandable, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without some of these specific details. The following description of the embodiments is only provided to provide a better understanding of the present application by showing examples of the present application.

[0039] It should be noted that in this document, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variation thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0040] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "above" or "over" another layer or another region, it may mean directly above the other layer or another region, or there may be other layers or regions between it and the other layer or another region. And if the component is flipped, this layer or this region will be "below" or "beneath" the other layer or another region.

[0041] It should be understood that the term "and / or" used herein is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally represents an "or" relationship between the associated objects before and after.

[0042] In the embodiments of the present application, the term "electrically connected" may refer to two components being directly electrically connected, or may refer to two components being electrically connected via one or more other components.

[0043] Without departing from the spirit or scope of the present application, various modifications and variations can be made in the present application, which will be apparent to those skilled in the art. Therefore, the present application is intended to cover modifications and variations of the present application that fall within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided by the embodiments of the present application can be combined with each other without conflict.

[0044] Before elaborating on the technical solutions provided by the embodiments of the present application, for the convenience of understanding the embodiments of the present application, the present application first specifically describes the problems existing in the related technologies:

[0045] On display devices such as mobile phones and tablet computers, it is necessary to integrate photosensitive components such as front cameras, infrared light sensors, and proximity light sensors on one side of the display panel. When these photosensitive components can ensure their normal operation through under-screen technology, a full-screen display of the display device can be achieved.

[0046] In the related technologies, a light-transmitting display area is usually set on the display panel, and the above-mentioned photosensitive components are disposed in the light-transmitting display area through under-screen technology. The pixel density (Pixels Per Inch, PPI) of the light-transmitting display area is usually lower than that of the main display area of the display panel to improve the light transmittance of the light-transmitting display area to achieve the normal operation of the photosensitive components and facilitate the arrangement of the pixel driving circuits of the pixel units in the light-transmitting display area. However, when the display panel is displaying, an obvious display boundary line often forms between the display area with a higher PPI and the display area with a lower PPI, affecting the display effect, so that the setting of the under-screen device and the display effect affect each other, resulting in the inability of the two to coexist.

[0047] To solve the above problems, the present application provides a display panel and a display device. The display panel can reduce the mutual influence between the setting of the under-screen device and the display effect, so that the two can coexist. The following will describe the embodiments of the display panel and the display device with reference to the drawings.

[0048] Display panel

[0049] Please refer to Figure 1 , Figure 1 which shows a top view structural schematic diagram of a display panel provided by an embodiment of the present application. Figure 2 which shows Figure 1 a cross-sectional structural schematic diagram of the first display area of the display panel in

[0050] The present application provides a display panel. The display panel 100 can be one of an OLED (Organic Light Emitting Diode) display panel, a QLED (Quantum Dot Light Emitting Diodes) display panel, and a micro-LED (including: MiniLED or MicroLED, where LED is a light emitting diode) display panel.

[0051] As Figure 1 and Figure 2 shown, the display panel 100 has a first display area AA1. The display panel 100 includes a substrate 10, a first pixel unit 20, and a light control unit 30. The first pixel unit 20 is disposed on one side of the substrate 10. A plurality of first pixel units 20 are spaced apart in the first display area AA1. The first pixel unit 20 is configured to emit a first light beam F1 at least along a first direction X, and the first direction X is parallel to the plane where the substrate 10 is located. The light control unit 30 is located in the first display area AA1 and is disposed on at least one side of the first pixel unit 20 in the first direction X. The light control unit 30 has a reflection state and a transmission state. In the reflection state, the light control unit 30 is configured to reflect at least a part of the first light beam F1 out of the display panel 100. In the transmission state, the light control unit 30 is configured to transmit at least a part of a second light beam F2 incident along a second direction Y, where the second direction Y intersects the first direction X. The second light beam F2 can be ambient light.

[0052] In an embodiment of the present application, a photosensitive component 200 can be integrated on the back surface of the first display area AA1 to achieve in-screen integration of the photosensitive component 200 such as a camera. At the same time, the first display area AA1 can display a picture, improving the display area of the display panel 100 and realizing a full-screen design of the display device 1000.

[0053] The substrate 10 can be any transparent substrate, such as a glass substrate, a quartz substrate, a plastic substrate, or other transparent rigid or flexible substrates, etc.

[0054] The first pixel unit 20 can be a red first light-emitting pixel, a green first light-emitting pixel, and a blue first light-emitting pixel. The number and color types of the first pixel units 20 in the first display area AA1 can be adjusted according to the design requirements of the display panel 100, and thus are not limited to the examples of the above embodiments. In addition, the arrangement manner between the plurality of first pixel units 20 is also not limited to the examples of the above embodiments.

[0055] In the display panel 100 provided by the embodiment of the present application, the first pixel unit 20 can emit a first light beam F1 along the first direction X, and the first direction X is parallel to the plane where the substrate 10 is located. The light control unit 30 is disposed on at least one side of the first pixel unit 20 in the first direction X. When the display panel 100 displays an image, that is, when the light control unit 30 is in a reflective state, the light control unit 30 reflects at least part of the first light beam F1 out of the display panel 100 to improve the display effect of the first display area AA1, thereby improving the display uniformity of the display panel 100. When the under-screen device of the display panel 100 needs to receive a second light beam F2 incident along the second direction Y, that is, when the light control unit 30 is in a transmissive state, it can transmit at least part of the second light beam F2 incident along the second direction Y. Furthermore, while being able to reduce the display area of the first pixel unit 20, it can also increase the transmission area of the second light beam F2, thereby helping the under-screen device to achieve its function. Therefore, the display panel 100 provided by the embodiment of the present application can reduce the mutual influence between the setting of the under-screen device and the display effect of the display panel 100, enabling the two to coexist.

[0056] Please refer to Figure 3 and Figure 4 , Figure 3 which shows Figure 2 a schematic cross-sectional structure diagram of the first display area in the display state in Figure 4 which shows Figure 2 a schematic cross-sectional structure diagram of the first display area in the non-display state in

[0057] As Figure 3 and Figure 4 shown, in some embodiments of the present application, the first pixel unit 20 includes a first electrode 21, a light-emitting layer 22, and a second electrode 23. The first electrode 21 has a first surface 211 disposed opposite to the light control unit 30 along the first direction X. The light-emitting layer 22 is disposed on at least one first surface 211, and the second electrode 23 is disposed on the surface of the light-emitting layer 22 facing away from the first electrode 21.

[0058] The first electrode 21 can be used as the anode layer of the first pixel unit 20. The anode layer can be made of a conductor, and the conductor has a relatively high work function to facilitate the injection of holes. In addition, the first electrode 21 has a first surface 211 disposed opposite to each other along the first direction X, and the light-emitting layer 22 is disposed on one surface or both surfaces of the first electrode 21, so that the first pixel unit 20 can emit the first light beam F1 along the first direction X.

[0059] In some alternative embodiments of the present application, the first electrode 21 can be made of metal, such as nickel, platinum, vanadium, chromium, copper, zinc, gold, silver, or their alloys. The first electrode 21 can also be made of metal oxides, such as zinc oxide, indium oxide, indium tin oxide (ITO), and indium zinc oxide (IZO). In addition to the above, an anode layer can also be made of a combination of metal and metal oxide, such as ZnO and Al or SnO 2 with Sb, or ITO and Ag.

[0060] In some other alternative embodiments of the present application, the first electrode 21 can be made of a conductive polymer, such as poly(3-methylthiophene), poly(3,4-(ethylene-1,2-dioxy)thiophene) (PEDOT), polypyrrole, and polyaniline.

[0061] In some alternative embodiments of the present application, the material of the first electrode 21 includes a light-blocking material.

[0062] In some alternative embodiments of the present application, the shape of the first electrode 21 can include regular shapes such as a cuboid, a cube, a hemisphere, a frustum of a cone, a frustum of a pyramid, a cone, and a cylinder. Of course, the shape of the first electrode 21 can also be an irregular shape, which is not limited herein.

[0063] In the above alternative embodiments, the first electrode 21 can prevent or reduce light leakage. In some embodiments, the light-blocking material included in the first electrode 21 can be a light-absorbing light-blocking material such as chromium or chromium oxide.

[0064] In an embodiment of the present application, the light-emitting layer 22 is disposed between the first electrode 21 and the second electrode 23, and can include at least one host material and at least one guest material. Both the host material and the guest material in the light-emitting layer 22 can be red, green, and blue host materials and red, green, and blue guest materials well-known to those skilled in the art. Exemplarily, the red host material can include carbazole derivatives such as TCP and CBP, and the red guest material can include iridium (Ir) or platinum (Pt)-based complexes.

[0065] In an embodiment of the present application, the second electrode 23 serves as the cathode layer of the first pixel unit 20. The cathode layer can also be made of a conductor, and the conductor has a low work function to facilitate electron injection. In some alternative embodiments of the present application, the second electrode 23 is a transparent electrode.

[0066] In the above alternative embodiments, the transparent electrode can improve the light transmittance, thereby helping to increase the light output of the first pixel unit 20, and thus improving the display effect of the first display area AA1.

[0067] In some embodiments of the present application, the second electrode 23 may be a transparent electrode or a semi-transparent electrode. For example, the materials of the transparent electrode may include indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium oxide (IGO), gallium zinc oxide (GZO), zinc oxide (ZnO), indium oxide (In2O3), aluminum zinc oxide (AZO), and carbon nanotubes, etc.

[0068] In addition, in some alternative embodiments of the present application, the first pixel unit 20 further includes a light-emitting functional layer. The light-emitting functional layer can help enhance the light-emitting intensity of the light-emitting layer 22.

[0069] In some embodiments of the present application, the light-emitting functional layer includes an electron transport region and / or a hole transport region. Among them, the electron transport region refers to the region where electrons move between the second electrode 23 and the light-emitting layer 22. Exemplarily, the electron transport region may include at least one layer of an electron injection layer (Election Injection Layer; EIL), an electron transporting layer (ElectionTransporting Layer; ETL), and a hole barrier layer (Hole Barrier Layer; HBL), and the above layers may adopt materials well-known to those skilled in the art. Exemplarily, the materials of the electron transport region may include nitrogen-containing heterocyclic compounds, such as pyrimidine-based, imidazole-based, or quinoline-based compounds, etc.

[0070] Exemplarily, the electron transport region includes a first electron transport layer and a second electron transport layer arranged in a stacked manner, and the materials of the first electron transport layer and the second electron transport layer may include one or more of 4,6-bis(3,5-di(3-pyridyl)phenyl-2-methylpyrimidine) (B3PymPm), 4,7-diphenyl-1,10-phenanthroline (BPhen), tris(8-hydroxyquinoline)aluminum (Alq3), lithium 8-hydroxyquinolate (Liq), gallium 8-hydroxyquinolate, bis[2-(2-hydroxyphenyl-1)-pyridine]beryllium, 2-(4-diphenyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole (PBD), and 1,3,5-tris(N-phenyl-2-benzimidazol-2-yl)benzene (TPBi).

[0071] The hole transport region refers to the region where holes move between the first electrode 21 and the light-emitting layer 22. Exemplarily, the hole transport region may include at least one layer of a hole injection layer (Hole Injection Layer; HIL), a hole transporting layer (Hole Transporting Layer; HTL), and an electron barrier layer (Electron Barrier Layer; EBL), and the above layers may adopt materials well-known to those skilled in the art. Exemplarily, the materials of the hole transport region may include one or more of triphenylamine compounds and P-type doped organic layers or polymers.

[0072] Exemplarily, the hole transport region includes a first hole transport layer, a second hole transport layer, and an electron barrier layer stacked on top of each other, and the materials of the first hole transport layer, the second hole transport layer, and the electron barrier layer may include one or more of tris-[4-(5-phenyl-2-thienyl)phenyl]amine, 4,4',4''-tris[2-naphthyl(phenyl)amino]triphenylamine (2-TNATA), 4,4',4''-tris-(3-methylphenylanilino)triphenylamine (m-MTDATA), copper phthalocyanine (CuPc), PEDOT:PSS, and 4,4′,4″-tris(N-3-methylphenyl-N-phenylamino)triphenylamine (F4TCNQ).

[0073] In an embodiment of the present application, the first pixel unit 20 can be prepared by a method known in the art. Exemplarily, the preparation method of the first pixel unit 20 may include: forming a first electrode 21 on a transparent or opaque substrate 10, forming a light-emitting layer 22 on the surface of the first electrode 21, and forming a second electrode 23 on the light-emitting layer 22. Among them, the formation of the light-emitting layer 22 can adopt known film-forming methods such as evaporation, sputtering, spin coating, dipping, ion plating, etc.

[0074] In some embodiments of the present application, the first electrode 21 further includes two second surfaces 212 oppositely arranged along the second direction Y, the first surface 211 is connected between the two second surfaces 212, and the light-emitting layer 22 is disposed on the second surface 212 of the first electrode 21 facing away from the substrate 10 and the two first surfaces 211.

[0075] In some alternative embodiments of the present application, at least two light control units 30 are respectively disposed on both sides of the same first pixel unit 20.

[0076] In these alternative embodiments, the position setting of the light control unit 30 can help improve the light output amount of the first light beam F1 reflected out of the display panel 100, thereby improving the display effect of the first display area AA1 to achieve the display uniformity of the display panel 100.

[0077] In some optional embodiments of the present application, the light control unit 30 is disposed around the first pixel unit 20. In the above optional embodiments, the light control unit 30 is disposed around the first pixel unit 20, which can maximize the reflection of the first light beam F1 and further improve the display effect of the first display area AA1.

[0078] In some examples, the first electrode 21 is a cuboid, the light-emitting layer 22 is disposed on four side walls of the cuboid disposed along the first direction X and the top surface facing away from the substrate 10, and the second electrode 23 is disposed on four side walls of the light-emitting layer 22 and the top surface facing away from the substrate 10. The light control unit 30 is disposed around the first pixel unit 20. In this way, the light control unit 30 can reflect the first light beam F1 emitted from the first pixel unit 20 around.

[0079] In some embodiments of the present application, the display panel 100 further includes a first pixel definition layer (Pixel Definition Layer; PDL), which is used to define the first pixel unit 20 to prevent the light emitted by adjacent first pixel units 20 from interfering with each other. The first pixel definition layer includes a first pixel opening. In an embodiment of the present application, the first pixel unit 20 is located in the first pixel opening, and the area defined by the first pixel opening is the light emitting area of ​​the first pixel unit 20.

[0080] The cross-sectional shape of the first pixel opening along the horizontal direction may be any suitable shape, such as a circle, a square, etc.

[0081] In some embodiments of the present application, the pixel definition layer further includes an isolation portion, which encloses the first pixel opening. The isolation portion can be formed by an organic material. Exemplarily, the isolation portion in the pixel definition layer can be made of polyimide (PI), polyamide, benzocyclobutene (BCB), acrylic resin or phenolic resin.

[0082] In some embodiments of the present application, the display panel 100 further includes a first pixel circuit, which is located in the first display area AA1 and electrically connected to the corresponding first pixel unit 20, for driving the first pixel unit 20 to display. It is understandable that there may be multiple first pixel circuits, which are electrically connected to the corresponding first pixel units 20, respectively.

[0083] In some embodiments of the present application, the circuit structure of the first pixel circuit is any one of a 2T1C circuit, a 7T1C circuit, a 7T2C circuit, or a 9T1C circuit. Herein, a "2T1C circuit" refers to a pixel circuit including two thin film transistors (T) and one capacitor (C) in the pixel circuit, and other "7T1C circuits", "7T2C circuits", "9T1C circuits", etc. are analogous.

[0084] In some embodiments of the present application, the light control unit 30 includes a light-transmitting portion 31 and a liquid crystal layer 32. The light-transmitting portion 31 has an incident surface. The liquid crystal layer 32 is disposed on the incident surface, and the liquid crystal layer 32 is configured to respond to a preset voltage to switch the light control unit 30 between a reflection state and a transmission state.

[0085] In an embodiment of the present application, the light-transmitting portion 31 is made of a transparent material, such as glass, quartz, plastic, etc. The liquid crystal layer 32 contains liquid crystal molecules, and the liquid crystal molecules can undergo a structural change under a preset voltage, thereby realizing the reflection and transmission of light beams. In addition, the liquid crystal layer 32 can also be driven by the first pixel circuit to change the structure of the liquid crystal molecules therein.

[0086] In some embodiments of the present application, the liquid crystal layer 32 can be a cholesteric liquid crystal layer 32, and by setting the specific material composition of the cholesteric liquid crystal layer 32 or adjusting the state of the cholesteric liquid crystal layer 32, the purpose of reflecting / transmitting light beams can be achieved.

[0087] In some embodiments of the present application, in the direction away from the substrate 10, the incident surface is inclined away from the first pixel unit 20. This can help reflect the first light beam F1 out of the display panel 100 along the second direction Y, thereby improving the display brightness of the first display area AA1.

[0088] In some alternative embodiments of the present application, the angle between the incident surface and the plane of the substrate 10 is 30° - 60°. Setting the angle between the incident surface and the plane of the substrate 10 within the above range can increase the light output amount of the reflected first light beam F1 exiting along the second direction Y, thereby further improving the display brightness of the first display area AA1.

[0089] Exemplarily, the angle between the incident surface and the plane of the substrate 10 can be, but is not limited to, 30°, 31°, 32°, 33°, 34°, 35°, 36°, 37°, 38°, 39°, 40°, 41°, 42°, 43°, 44°, 45°, 46°, 47°, 48°, 49°, 50°, 51°, 52°, 53°, 54°, 55°, 56°, 57°, 58°, 59°, 60°.

[0090] In some embodiments of the present application, there is a gap between the liquid crystal layer 32 and the first pixel unit 20. The setting of this gap can not only reduce the manufacturing difficulty of the display panel 100, but also help to further increase the light output amount of the reflected first light beam F1 exiting along the second direction Y.

[0091] In addition, please continue to refer to Figure 3, in some other embodiments of the present application, along the second direction Y, the height H1 of the light control unit 30 is greater than or equal to the height H2 of the first pixel unit 20. This can increase the light output amount of the reflected first light beam F1 exiting along the second direction Y, thereby further improving the display brightness of the first display area AA1.

[0092] In some alternative embodiments of the present application, the height H1 of the light control unit 30 is equal to the height H2 of the first pixel unit 20. This can further increase the light output amount of the reflected first light beam F1 exiting along the second direction Y, thereby further improving the display brightness of the first display area AA1.

[0093] Please refer to Figure 5 and Figure 6 , Figure 5 shows Figure 3 a top-down structural schematic diagram of the first display area in the display state in Figure 6 shows Figure 4 a top-down structural schematic diagram of the first display area in the non-display state in

[0094] As Figure 5 and Figure 6 shown, the display area of the first pixel unit 20 in the first display area AA1 in the display state is significantly larger than that in the non-display state, thereby being able to improve the display brightness of the first display area AA1, which helps to improve the display uniformity of the display panel 100. In addition, the edge spacing of the light-emitting regions displayed by two adjacent first pixel units 20 in the display state is significantly smaller than the edge spacing of the light-emitting regions displayed by two adjacent first pixel units 20 in the non-display state. This can help increase the area of the external second light beam F2 passing through the first display area AA1, and then more of the second light beam F2 is incident on the under-screen device, enabling the under-screen device to operate normally when the first display area AA1 is in the non-display state.

[0095] Please refer to Figures 7-9 , Figure 7 shows a top-down structural schematic diagram of a display panel provided by another embodiment of the present application. Figure 8 shows Figure 7 a partially enlarged structural schematic diagram of the first display area and the second display area at Q in Figure 9 shows Figure 7 a partially enlarged structural schematic diagram of the first display area and the second display area at Q in the non-display state in

[0096] As Figures 7-9As shown, the display panel 100 further has a second display area AA2, and the second display area AA2 surrounds at least part of the first display area AA1. The display panel 100 further includes second pixel units 40 disposed on one side of the substrate 10, and a plurality of second pixel units 40 are spaced apart and distributed in the second display area AA2. As Figure 8 shown, in the reflective state, the display area of the second pixel unit 40 is less than or equal to the display area of the first pixel unit 20. As Figure 9 shown, in the transmissive state, the display area of the second pixel unit 40 is greater than the display area of the first pixel unit 20.

[0097] In an embodiment of the present application, the second display area AA2 can be understood as the main display area of the display panel 100. When the display panel 100 is displaying, that is, when the light control unit 30 is in the reflective state, the display area of the second pixel unit 40 is less than or equal to the display area of the first pixel unit 20, so that the display intensities of the second display area AA2 and the first display area AA1 tend to be consistent, thereby improving the display uniformity of the display panel 100. In addition, in the transmissive state, the display area of the second pixel unit 40 is greater than the display area of the first pixel unit 20, which can enhance the transmissive area of the first display area AA1, thereby helping the under-screen device to receive the external second light beam F2.

[0098] In some alternative embodiments of the present application, in the reflective state, the display area of the second pixel unit 40 is equal to the display area of the first pixel unit 20.

[0099] In some alternative embodiments of the present application, the pixel density of the second pixel units 40 in the second display area AA2 is greater than or equal to the pixel density of the first pixel units 20 in the first display area AA1. This can improve the display effect of the display panel 100 while also helping the under-screen device to receive the external second light beam F2.

[0100] In some embodiments of the present application, the second pixel units 40 can be red second light-emitting pixels, green second light-emitting pixels, and blue second light-emitting pixels. The number and color types of the second pixel units 40 in the second display area AA2 can be adjusted according to the design requirements of the display panel 100, so as not to be limited to the examples of the above embodiments. In addition, the arrangement manner between the plurality of second pixel units 40 is also not limited to the examples of the above embodiments.

[0101] In addition, the second pixel units 40 can include a light-emitting pixel structure well-known in the art. For example, the second pixel units 40 include an anode, a second light-emitting layer, and a cathode stacked from bottom to top.

[0102] In some embodiments of the present application, the display panel 100 may further include a packaging layer, a polarizer, and a cover plate located above the packaging layer. Alternatively, the cover plate may be directly disposed above the packaging layer without the need to provide a polarizer, or at least the cover plate is directly disposed above the packaging layer in the first display area AA1 without the need to provide a polarizer, so as to avoid the polarizer affecting the light collection amount of the photosensitive component 200 disposed below the corresponding first display area AA1. Of course, a polarizer may also be provided above the packaging layer in the first display area AA1.

[0103] Display device

[0104] Please refer to Figure 10 and 11 , Figure 10 which shows a top view structural schematic diagram of a display device provided by an embodiment of the present application. Figure 11 shows Figure 10 a cross-sectional structural schematic diagram taken along the line D-D in

[0105] As Figure 10 shown, the present application provides a display device. The display device 1000 may include the display panel 100 in any of the above embodiments. The display panel 100 has a first display area AA1 and a second display area AA2 surrounding at least a part of the first display area AA1.

[0106] As Figure 11 shown, in an embodiment of the present application, the display panel 100 includes a display surface S1 and a non-display surface S2 which are oppositely disposed. The display device 1000 further includes a photosensitive component 200. The photosensitive component 200 is located on the non-display surface S2 side of the display panel 100, and the photosensitive component 200 corresponds to the position of the first display area AA1.

[0107] The photosensitive component 200 may be an image acquisition device for acquiring external image information. In an embodiment of the present application, the photosensitive component 200 is a Complementary Metal Oxide Semiconductor (CMOS) image acquisition device. In some other embodiments, the photosensitive component 200 may also be an image acquisition device in other forms such as a Charge-coupled Device (CCD) image acquisition device. It can be understood that the photosensitive component 200 is not limited to being an image acquisition device. For example, in some embodiments, the photosensitive component 200 may also be a light sensor such as an infrared sensor, a proximity sensor, an infrared lens, a flood illumination sensing element, an ambient light sensor, and a dot matrix projector. In addition, other components may be integrated on the non-display surface S2 of the display panel 100 of the display device 1000, such as a receiver, a speaker, etc.

[0108] In an embodiment of the present application, the display device 1000 can be any device with a display function. For example, it can be a mobile device such as a mobile phone, a tablet computer, a notebook computer, a handheld computer, a vehicle-mounted electronic device, a wearable device, an Ultra mobile Personal Computer (UMPC), a netbook, or a Personal Digital Assistant (PDA), etc. It can also be a non-mobile device such as a Personal Computer (PC), a television (TV), a teller machine, or a self-service machine, etc.

[0109] In accordance with the embodiments of the present application as described above, these embodiments do not describe all the details in detail, nor do they limit the application to the specific embodiments described. Obviously, many modifications and variations can be made according to the above description. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present application, so that those skilled in the art can make good use of the present application and its modifications based on the present application. The present application is only limited by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized in that, the display panel has a first display area, and the display panel includes: a substrate; a first pixel unit disposed on one side of the substrate, and a plurality of the first pixel units are spaced apart in the first display area. The first pixel unit is configured to emit a first light beam at least along a first direction, and the first direction is parallel to the plane where the substrate is located; a light control unit located in the first display area and disposed on at least one side of the first pixel unit in the first direction. The light control unit has a reflection state and a transmission state. In the reflection state, the light control unit is configured to reflect at least part of the first light beam out of the display panel. In the transmission state, the light control unit is configured to transmit at least part of a second light beam incident along a second direction, wherein the second direction intersects the first direction.

2. The display panel according to claim 1, characterized in that, the first pixel unit includes: a first electrode having a first surface disposed opposite to the light control unit along the first direction; a light-emitting layer disposed on at least one of the first surfaces; a second electrode disposed on the surface of the light-emitting layer facing away from the first electrode.

3. The display panel according to claim 2, characterized in that, the material of the first electrode includes a light-blocking material.

4. The display panel according to claim 2, characterized in that, the second electrode is a light-transmitting electrode.

5. The display panel according to claim 2, characterized in that, the first electrode further includes two second surfaces disposed opposite to each other along the second direction, the first surface is connected between the two second surfaces, and the light-emitting layer is disposed on the second surface of the first electrode facing away from the substrate and the two first surfaces.

6. The display panel according to claim 2, characterized in that, at least two of the light control units are respectively disposed on both sides of the same first pixel unit.

7. The display panel according to claim 2, characterized in that, the light control unit is disposed around the first pixel unit.

8. The display panel according to claim 1, characterized in that, the light control unit includes: a light-transmitting part having an incident surface; a liquid crystal layer disposed on the incident surface, and the liquid crystal layer is configured to respond to a preset voltage to switch the light control unit between the reflection state and the transmission state.

9. The display panel according to claim 8, characterized in that, in a direction away from the substrate, the incident surface is inclined away from the first pixel unit.

10. The display panel according to claim 8, characterized in that, an included angle between the incident surface and the plane where the substrate is located is 30° - 60°.

11. The display panel according to claim 9 or 10, characterized in that, a gap exists between the liquid crystal layer and the first pixel unit.

12. The display panel according to claim 9 or 10, characterized in that, along the second direction, a height of the light control unit is greater than or equal to a height of the first pixel unit.

13. The display panel according to claim 1, It is characterized in that the display panel further has a second display area surrounding at least part of the first display area; the display panel further includes second pixel units disposed on the substrate, and a plurality of the second pixel units are distributed at intervals in the second display area; in the reflection state, the display area of the second pixel unit is less than or equal to the display area of the first pixel unit, and in the transmission state, the display area of the second pixel unit is greater than the display area of the first pixel unit.

14. The display panel according to claim 13, It is characterized in that in the reflection state, the display area of the second pixel unit is equal to the display area of the first pixel unit.

15. The display panel according to claim 13, It is characterized in that the pixel density of the second pixel unit in the second display area is greater than or equal to the pixel density of the first pixel unit in the first display area.

16. A display device, It is characterized in that it includes the display panel according to any one of claims 1 to 15.

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