Display panel and display device

Abstract

The invention belongs to the technical field of display, and particularly relates to a display panel and a display device.The display panel is provided with a light sensing area and a light supplementing area, a light supplementing unit is arranged in the light supplementing area, the light supplementing unit comprises an electrophoresis structure and an electrode structure, and light conversion particles and black particles in the electrophoresis structure are charged and have the same electrical property; a first electrode and a second electrode in the electrode structure are oppositely arranged, and external light can enter the electrophoresis structure through the first electrode; when the first electrode and the second electrode are electrified, the electric quantity of the first electrode is larger than or smaller than the electric quantity of the second electrode, the electric quantity of the light conversion particles or smaller than the electric quantity of the black particles, under the action of the electrode structure, the light conversion particles move towards the first electrode, the black particles move towards the second electrode, and external light rays irradiate towards the light conversion particles. The light conversion particles can convert external light into visible light and reflect the visible light to the outside so as to supplement light to the area where the photosensitive element is located. Light can be supplemented to an object shot by the photosensitive element by means of external light.

Description

Technical Field

[0001] The present application belongs to the field of display technology, and specifically relates to a display panel and a display device. Background Art

[0002] At present, mobile phone photography is gradually replacing the role of cameras. With the development of electronic technology, the functions of mobile phone photography are becoming more and more comprehensive, and users' demand for photography is also getting higher and higher.

[0003] In the prior art, when taking photos with a mobile phone, a method of external light supplement is required, such as a light supplement board or a lighting method. However, the method of external light supplement is not very convenient for taking photos. Summary of the invention

[0004] The purpose of the present application is to provide a display panel and a display device that can solve the problem of needing fill light when taking pictures.

[0005] In a first aspect, the present application provides a display panel, which is provided with a photosensitive area corresponding to a photosensitive element, and the display panel is further provided with a fill light area, the fill light area is arranged around the photosensitive area, a fill light unit is arranged in the fill light area, and the fill light unit includes:

[0006] An electrophoretic structure comprises a shell, a dispersion liquid, light-converting particles and black particles arranged in the shell, wherein the light-converting particles and the black particles are both charged, and the light-converting particles and the black particles have the same charge;

[0007] An electrode structure, comprising a first electrode and a second electrode spaced apart from each other, the first electrode and the second electrode being arranged opposite to each other, the electrophoresis structure being arranged between the first electrode and the second electrode, and external light being able to enter the electrophoresis structure through the first electrode;

[0008] Among them, when electrical properties opposite to those of the photoconversion particles and the black particles are applied to the first electrode and the second electrode, and the charge of the first electrode is greater than or less than the charge of the second electrode, and the charge of the photoconversion particles is or less than the charge of the black particles, under the action of the electrode structure, the photoconversion particles move toward the first electrode, and the black particles move toward the second electrode. When external light is emitted to the photoconversion particles, the photoconversion particles can convert the external light into visible light and reflect the visible light back to the outside world to supplement the light in the area where the photosensitive element is located.

[0009] In an exemplary embodiment of the present application, the display panel further includes a light emitting structure, and the light emitting structure is provided on a side of the second electrode away from the first electrode;

[0010] The electrophoretic structure further includes color particles disposed in the shell, the color particles are charged, and the electrical properties of the color particles are opposite to those of the light conversion particles;

[0011] The electrode structure further includes a third electrode and a fourth electrode which are arranged opposite to each other. The third electrode and the fourth electrode are arranged outside the electrophoretic structure together with the first electrode and the second electrode. The third electrode and the fourth electrode have the same electrical properties and are opposite to the electrical properties of the first electrode and the second electrode.

[0012] When the electrical properties of the first electrode and the second electrode are opposite to those of the color particles, and the electrical properties of the third electrode and the fourth electrode are opposite to those of the photoconversion particles, the color particles move toward the first electrode and the second electrode, the photoconversion particles move toward the third electrode or the fourth electrode, and the black particles move toward the fourth electrode or the third electrode, and the light emitted by the light-emitting structure can be emitted to the outside through the color particles.

[0013] In an exemplary embodiment of the present application, a plurality of fill light units are provided in the fill light area, and adjacent fill light units are spaced apart from each other.

[0014] In an exemplary embodiment of the present application, a plurality of fill light pixel units are provided in the fill light area, and each of the fill light pixel units includes a red fill light unit, a green fill light unit and a blue fill light unit;

[0015] When the color particles in the red fill light unit, the green fill light unit and the blue fill light unit are located at the first electrode side at the same time and the light-emitting structure is in a light-emitting state, the fill light pixel unit presents white light and can fill light for the area where the photosensitive element is located.

[0016] In an exemplary embodiment of the present application, the display panel further includes a driving backplane, and the driving backplane is electrically connected to the second electrode;

[0017] The light emitting structure comprises an LED light emitting component, and the LED light emitting component is arranged on a side of the driving back plate away from the second electrode.

[0018] In an exemplary embodiment of the present application, the display panel further includes a driving backplane;

[0019] The light emitting structure is disposed between the fill light unit and the driving backplane, and the light emitting structure comprises a first anode, a first organic light emitting portion and a first cathode, the first organic light emitting portion is disposed between the first anode and the first cathode, and the first anode is electrically connected to the driving backplane;

[0020] The first organic light emitting portion can emit white light to the fill light unit under the action of the first anode and the first cathode.

[0021] In an exemplary embodiment of the present application, the display panel is further provided with a display area, the display area is arranged around the fill light area, and a plurality of pixel units arranged in an array are provided in the display area;

[0022] The arrangement of the fill light units in the fill light area is the same as the arrangement of the pixel units in the display area, and the projection area of ​​the fill light units on the driving backplane is an integer multiple of the projection area of ​​the pixel units on the driving backplane.

[0023] In an exemplary embodiment of the present application, each of the pixel units includes a plurality of sub-pixels, and adjacent sub-pixels are arranged at intervals from each other;

[0024] Each of the sub-pixels comprises a second anode, a second cathode, and a second organic light-emitting portion disposed between the second anode and the second cathode, the second anodes of adjacent sub-pixels are spaced apart from each other, and the second organic light-emitting portions of adjacent sub-pixels are spaced apart from each other;

[0025] The first anode and the second anode are arranged in the same layer, and the first electrode and the second cathode are arranged at intervals.

[0026] In an exemplary embodiment of the present application, the photoconversion particles include gelatin and deoxyribonucleic acid.

[0027] A second aspect of the present application provides a display device, including:

[0028] Photosensitive element; and

[0029] In the display panel described in any of the above items, the photosensitive element corresponds to the photosensitive area, and the fill light unit is arranged around the photosensitive element.

[0030] The display panel and display device of the present application have at least the following beneficial effects:

[0031] A fill-in light area with a fill-in light unit is provided on the periphery of the photosensitive area. By controlling the electrical properties of the first electrode and the second electrode in the electrode structure, the moving directions of the photoconversion particles and the black particles in the electrophoretic structure can be controlled. When electrical properties different from those of the photoconversion particles and the black particles are applied to the first electrode and the second electrode, and the electric charge of the first electrode is greater than or less than that of the second electrode, and the electric charge of the photoconversion particles is greater than or less than that of the black particles, the photoconversion particles move toward the first electrode, and the black particles move toward the second electrode. When external light is incident from the first electrode into the electrophoretic structure, the photoconversion particles convert the external light into visible light, and reflect the visible light to the outside world, so that the visible light is irradiated on the photographed object, so as to fill in the light of the object photographed by the photosensitive element. That is, this scheme can fill in the light of the object photographed by the photosensitive element with the help of external light, which can reduce the use of fill-in light equipment, making it more convenient to fill in the light when taking photos with a mobile phone, and can achieve the fill-in light effect without fill-in light equipment, effectively improving the photographing effect, and reducing the use cost of fill-in light equipment.

[0032] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0033] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 A schematic structural diagram is shown in which a photosensitive area and a fill light area are provided on the display panel provided in the first or second embodiment of the present application.

[0036] Figure 2 A schematic cross-sectional structure diagram of the fill light unit provided in Embodiment 1 or Embodiment 2 of the present application is shown.

[0037] Figure 3 A structural schematic diagram showing the fill light unit provided in the first or second embodiment of the present application in the fill light state.

[0038] Figure 4 A schematic structural diagram showing a structure in which the fill light unit provided in the first or second embodiment of the present application is in a black state.

[0039] Figure 5A schematic diagram of the structure of the fill light unit provided in the first or second embodiment of the present application for display or monochrome fill light is shown.

[0040] Figure 6 A schematic diagram of the structure in which the pixel units in the display area provided in the first or second embodiment of the present application are in the shape of long strips is shown.

[0041] Figure 7 A schematic diagram of the structure in which the pixel units in the display area provided in the first or second embodiment of the present application are diamond-shaped is shown.

[0042] Figure 8 A schematic diagram of the structure of an LED light-emitting component is shown in which the light-emitting structure provided in Embodiment 1 or Embodiment 2 of the present application is a light-emitting component.

[0043] Fig. 9 A schematic diagram showing the structure of a white light OLED in which the light emitting structure provided in Embodiment 1 or Embodiment 2 of the present application is a white light OLED.

[0044] Fig.10 A circuit structure diagram of the CMOS control electrode structure provided in Embodiment 1 or Embodiment 2 of the present application is shown.

[0045] Fig.11 A circuit structure diagram of the NMOS control electrode structure provided in Embodiment 1 or Embodiment 2 of the present application is shown.

[0046] Description of reference numerals:

[0047] 100, display panel; 100a, photosensitive area; 100b, fill light area; 100c, fill light pixel unit; 100d, display area; 110, fill light unit; 110a, red fill light unit; 110b, green fill light unit; 110c, blue fill light unit; 111, electrophoretic structure; 1110, housing; 1111, light conversion particles; 1112, black particles; 1113, color particles; 1120, first electrode; 1121, second electrode; 1122, third electrode; 1123, fourth electrode; 120, light emitting structure; 121, LE D light-emitting element; 122, white light OLED; 1220, first anode; 1221, first organic light-emitting unit; 1222, first cathode; 130, driving backplane; 140, pixel unit; 141, sub-pixel; 141a, red sub-pixel; 141b, green sub-pixel; 141c, blue sub-pixel; 1410, second anode; 1411, second cathode; 1412, second organic light-emitting unit; 150, encapsulation layer; 160, color resist layer; 161a, red color resist; 161b, green color resist; 161c, blue color resist; 200, photosensitive element. DETAILED DESCRIPTION

[0048] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of the example embodiments to those skilled in the art.

[0049] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0050] In this application, unless otherwise clearly specified and limited, the terms "assembly", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0052] Embodiment 1

[0053] See also Figure 1 As shown, the embodiment of the present application provides a display panel 100, on which a photosensitive area 100a corresponding to a photosensitive element 200 is provided, and the photosensitive element 200 can realize a photographing function. The display panel 100 also includes a fill light area 100b arranged around the photosensitive area 100a, and the fill light area 100b can fill light for an object to be photographed when the photosensitive element 200 is taking a photo, thereby improving the photographing effect, reducing the use of external fill light equipment, and reducing costs.

[0054] It should be noted that the photosensitive element 200 can be a front camera or a rear camera. When the photosensitive element 200 is a front camera, the photosensitive element 200 is an under-screen camera.

[0055] In some embodiments of the present application, when the photosensitive element 200 is a front camera, the width of the fill light area 100b is 50 to 100 pixel units 140 of the display area 100d described below; for example, the width of the fill light area 100b can be 50 pixel units 140, or 60 pixel units 140, or 70, 80, 90 or 100 pixel units 140. The width of the fill light area 100b is 50 to 100 pixel units 140, which can not only fill light for the object to be photographed, but also reduce the space occupied by the fill light area 100b, thereby ensuring the aperture ratio of the display panel 100 and the display effect.

[0056] It is worth mentioning that the fill light area 100b is arranged around the outside of the photosensitive area 100a. The cross section of the fill light area 100b can be circular, square, or other shapes, such as square or triangle, as long as the fill light area 100b is arranged around the outside of the photosensitive area 100a.

[0057] In some embodiments of the present application, see Figure 1 As shown, the cross section of the fill light area 100b is annular, and the fill light area 100b is connected to the photosensitive area 100a. A fill light unit 110 is provided in the fill light area 100b, and the fill light unit 110 is used to fill light for the object to be photographed, thereby improving the photographing effect of the photosensitive element 200.

[0058] In some embodiments of the present application, see Figure 2 As shown, the fill light unit 110 includes an electrophoretic structure 111 and an electrode structure.

[0059] The electrophoretic structure 111 includes a shell 1110 and a dispersion liquid, a light-converting particle 1111, and a black particle 1112 wrapped in the shell 1110. The shell 1110 may be in a circular, square, or trapezoidal shape. The light-converting particle 1111 and the black particle 1112 are mixed in the dispersion liquid, and both the light-converting particle 1111 and the black particle 1112 are charged, and the light-converting particle 1111 and the black particle 1112 have the same electrical properties.

[0060] It should be noted that the electrophoretic structure 111 may be a microcapsule structure or a microcup structure, and may be specifically designed according to different embodiments.

[0061] In some embodiments of the present application, the light-conversion particle 1111 is a light-conversion silica gel ball. The light-conversion particle 1111 includes a polymer and a biomass aerogel ball prepared from gelatin (GE) and deoxyribonucleic acid (DNA). The polymer coats or modifies the biomass aerogel ball, so that the light-conversion particle 1111 can convert external light into visible light and reflect the visible light back.

[0062] It is worth mentioning that modification and coating can be carried out by physical or chemical methods. Physical methods include grinding and spraying. Chemical methods include coagulation, emulsion polymerization or dispersion polymerization, among which the polymer uses styrene (St) as a monomer and then introduces other different substances for polymerization.

[0063] In addition, the photoconversion particles 1111 can be charged by coating or modifying the biomass aerogel balls with polymers, and the charge can be applied to the outside of the polymer during surface modification.

[0064] In some embodiments of the present application, see Figure 2 As shown, the electrode structure includes a first electrode 1120 and a second electrode 1121 which are spaced apart from each other, and the first electrode 1120 and the second electrode 1121 are arranged opposite to each other. The first electrode 1120 and the second electrode 1121 are arranged on opposite sides of the electrophoretic structure 111.

[0065] It should be noted that the first electrode 1120 and the second electrode 1121 have the same electrical properties, and the light-converted particles 1111 and the black particles 1112 can be controlled to move toward different electrodes by having different charges on the first electrode 1120 and the second electrode 1121. The moving directions of the light-converted particles 1111 and the black particles 1112 in the electrophoretic structure 111 can be controlled by changing the electrical properties of the first electrode 1120 and the second electrode 1121.

[0066] In addition, external light can pass through the first electrode 1120 and be emitted to the second electrode 1121, that is, the first electrode 1120 is located closer to the outside world, and the first electrode 1120 is a transparent electrode, so that external light can pass through the first electrode 1120 and be emitted into the second electrode 1121. The second electrode 1121 can be a transparent electrode or an opaque electrode, which is not specifically limited here.

[0067] In some embodiments of the present application, see Figure 3As shown, the first electrode 1120 and the second electrode 1121 are energized to make the first electrode 1120 and the second electrode 1121 have the same electrical properties, and the electrical properties of the first electrode 1120 and the second electrode 1121 are opposite to those of the photoconversion particles 1111 and the black particles 1112. When the charge of the first electrode 1120 is greater than or less than the charge of the second electrode 1121, and the charge of the photoconversion particles 1111 is greater than or less than the charge of the black particles 1112, the photoconversion particles 1111 move toward the first electrode 1120 and the black particles 1112 move toward the second electrode 1121, based on the principle that the side with a larger charge of the electrode has a stronger attraction to the particles with a larger charge, so that the photoconversion particles 1111 are attached to the first electrode 1120, the black particles 1112 are attached to the second electrode 1121, and the photoconversion particles 1111 are closer to the outside world than the black particles 1112. At this time, when external light enters from the first electrode 1120, the light conversion particles 1111 can convert the external light into visible light and reflect the visible light back, that is, the visible light will be reflected to the outside world to provide supplementary light for the object to be photographed. In other words, when the photosensitive element 200 takes a photo, the light conversion particles 1111 can use the external light to provide supplementary light for the object to be photographed, thereby improving the photographing effect, reducing the use of supplementary light equipment, improving the convenience of photographing, and reducing costs.

[0068] It should be noted that the light conversion particles 1111 use external light to provide fill light for the object to be photographed. Therefore, when the external light is stronger, the fill light intensity is greater, and the shooting effect of the photosensitive element 200 is better.

[0069] For an example, see Figure 3 As shown, when the charge of the first electrode 1120 is greater than that of the second electrode 1121, and the charge of the photoconversion particle 1111 is greater than that of the black particle 1112, under the action of the electrode structure, the side with a larger charge of the electrode has a stronger attraction to the particle with a larger charge. Then the photoconversion particle 1111 moves toward the first electrode 1120, and the black particle 1112 moves toward the second electrode 1121, so that the photoconversion particle 1111 is attached to the first electrode 1120, and the black particle 1112 is attached to the second electrode 1121. The photoconversion particle 1111 is closer to the outside world than the black particle 1112, and the electrophoretic structure 111 is in a light-filling state.

[0070] In another example, when the charge of the first electrode 1120 is less than that of the second electrode 1121, and the charge of the photoconversion particle 1111 is less than that of the black particle 1112, under the effect of the electrode structure, the side with a larger charge of the electrode has a stronger attraction to the particle with a larger charge. Similarly, the photoconversion particle 1111 moves toward the first electrode 1120, and the black particle 1112 moves toward the second electrode 1121, so as to achieve fill light.

[0071] In another alternative embodiment, see Figure 4 As shown, when the charge of the first electrode 1120 is greater than that of the second electrode 1121, and the charge of the photoconversion particles 1111 is less than that of the black particles 1112, under the principle that the side with a larger charge of the electrode has a stronger attraction to the particles with a larger charge, the black particles 1112 gradually move toward the first electrode 1120, and the photoconversion particles 1111 move toward the second electrode 1121. At this time, the black particles 1112 are attached to the side of the first electrode 1120, and the photoconversion particles 1111 are attached to the side of the second electrode 1121. When external light is emitted from the first electrode 1120 into the electrophoretic structure 111, the black particles 1112 absorb the external light, so that the electrophoretic structure 111 appears in a black state, and there is no fill light effect.

[0072] It can be understood that the black particles 1112 may be black matrix (BM) light absorbing balls.

[0073] In addition, the fill light area 100b can be controlled to be in a fill light state or a black state according to the situation of the object to be photographed.

[0074] It is worth mentioning that the light conversion particles 1111 and the black particles 1112 can be either positively charged or negatively charged, and the specific design can be based on different embodiments.

[0075] In some embodiments of the present application, the light conversion particles 1111 and the black particles 1112 are both nanometer-sized and are spherical in structure to ensure the light conversion effect and the shielding effect.

[0076] In some embodiments of the present application, see Figure 5 As shown, the display panel 100 further includes a light emitting structure 120. The light emitting structure 120 is disposed on a side of the second electrode 1121 away from the first electrode 1120, and can release light to the electrophoretic structure 111 to provide light to the color particles 1113 described below, so that the fill light area 100b can realize display or achieve a monochrome fill light effect.

[0077] In some embodiments of the present application, see Figure 5 As shown, the electrophoretic structure 111 further includes color particles 1113. The color particles 1113 can be color blocking filter balls. When light passes through the color blocking filter balls, light of the same color as the color blocking filter balls can be formed. The color particles 1113 are charged, and the electrical properties of the color particles 1113 are opposite to those of the light conversion particles 1111.

[0078] In some embodiments of the present application, see Figures 3 to 5As shown, the electrode structure further includes a third electrode 1122 and a fourth electrode 1123. The third electrode 1122 and the fourth electrode 1123 are arranged opposite to each other, and the third electrode 1122 and the fourth electrode 1123 are located on opposite sides of the first electrode 1120 and the second electrode 1121. That is, the first electrode 1120, the second electrode 1121, the third electrode 1122 and the fourth electrode 1123 enclose a receiving space, and the electrophoretic structure 111 can be arranged in this receiving space to prevent the electrophoretic structure 111 from sliding and ensure the stability of the electrophoretic structure 111.

[0079] In some embodiments of the present application, the electrical properties of the third electrode 1122 and the fourth electrode 1123 are the same, and the electrical properties of the third electrode 1122 and the fourth electrode 1123 are opposite to those of the first electrode 1120 and the second electrode 1121. When the electrical properties opposite to those of the color particles 1113 are applied to the first electrode 1120 and the second electrode 1121, and the electrical properties opposite to those of the photoconversion particles 1111 are applied to the third electrode 1122 and the fourth electrode 1123, the color particles 1113 move toward the first electrode 1120 and / or the second electrode 1121, and the photoconversion particles 1111 and the black particles 1112 determine their moving directions according to the magnitude of the charges of the third electrode 1122 and the fourth electrode 1123 and the magnitude of the charges of the photoconversion particles 1111 and the black particles 1112.

[0080] In some embodiments of the present application, see Figure 5 As shown, when the color particles 1113 move to the first electrode 1120 and / or the second electrode 1121 and the light-emitting structure 120 is in a working state, the light emitted by the light-emitting structure 120 can pass through the color particles 1113 and be emitted from the first electrode 1120, so that the emitted light has the same color as the color particles 1113, thereby making the fill light area 100b present a display effect or achieve a monochrome fill light effect.

[0081] For example, see Figure 3As shown, the photoconversion particles 1111 and the black particles 1112 are positively charged, the charge of the photoconversion particles 1111 is greater than the charge of the black particles 1112, the color particles 1113 are negatively charged, the first electrode 1120 and the second electrode 1121 are negatively charged, and the charge of the first electrode 1120 is greater than the charge of the second electrode 1121, and the third electrode 1122 and the fourth electrode 1123 are positively charged. Under the action of the electrodes, the photoconversion particles 1111 move toward the first electrode 1120, the black particles 1112 move toward the second electrode 1121, and the color particles 1113 move toward the third electrode 1122 and / or the fourth electrode 1123, the photoconversion particles 1111 are attached to the first electrode 1120 side, the black particles 1112 are attached to the second electrode 1121 side, and the color particles 1113 are attached to the third electrode 1122 and / or the fourth electrode 1123 side. At this time, when external light enters the electrophoretic structure 111 through the first electrode 1120, the light conversion particles 1111 can convert the external light into visible light and reflect the visible light back, that is, the visible light will be reflected to the outside world to fill in the light of the object to be photographed, so that the fill-in light unit 110 is in a fill-in light state. That is to say, when the photosensitive element 200 takes a photo, the light conversion particles 1111 can use the external light to fill in the light of the object to be photographed, improve the photographing effect, and reduce the use of fill-in light equipment, thereby improving the convenience of photographing and reducing costs.

[0082] For another example, see Figure 4 As shown, the photoconversion particles 1111 and the black particles 1112 are positively charged, the charge of the photoconversion particles 1111 is less than the charge of the black particles 1112, the color particles 1113 are negatively charged, the first electrode 1120 and the second electrode 1121 are negatively charged, and the charge of the first electrode 1120 is greater than the charge of the second electrode 1121, and the third electrode 1122 and the fourth electrode 1123 are positively charged. Under the action of the electrodes, the photoconversion particles 1111 move toward the second electrode 1121, the black particles 1112 move toward the first electrode 1120, and the color particles 1113 move toward the third electrode 1122 and / or the fourth electrode 1123, the photoconversion particles 1111 are attached to the second electrode 1121 side, the black particles 1112 are attached to the first electrode 1120 side, and the color particles 1113 are attached to the third electrode 1122 and / or the fourth electrode 1123 side. At this time, when external light passes through the first electrode 1120 and enters the electrophoretic structure 111 , the black particles 1112 absorb the external light, so that the fill light unit 110 is in a black state without fill light function.

[0083] For another example, see Figure 5As shown, the photoconversion particles 1111 and the black particles 1112 are positively charged, the charge of the photoconversion particles 1111 is less than the charge of the black particles 1112, the color particles 1113 are negatively charged, the first electrode 1120 and the second electrode 1121 are positively charged, the third electrode 1122 and the fourth electrode 1123 are negatively charged, and the charge of the third electrode 1122 is greater than or less than the charge of the fourth electrode 1123. Under the action of the electrodes, the color particles 1113 move toward the first electrode 1120 and / or the second electrode 1121, the photoconversion particles 1111 move toward the third electrode 1122 or the fourth electrode 1123, and the black particles 1112 move toward the fourth electrode 1123 or the third electrode 1122, so as to avoid the light emitted by the light-emitting structure 120 being blocked by the photoconversion particles 1111 and the black particles 1112. At this time, the color particles 1113 are attached to the first electrode 1120 and / or the second electrode 1121, the light conversion particles 1111 are attached to the third electrode 1122 or the fourth electrode 1123, and the black particles 1112 are attached to the fourth electrode 1123 or the third electrode 1122. When the light emitting structure 120 emits light to the electrophoretic structure 111, the light is filtered by the color particles 1113 to generate light of the same color as the color particles 1113, and the color light passes through the first electrode 1120 and is emitted to the outside, so that the fill light unit 110 is in a display or monochrome fill light state.

[0084] When the fill light unit 110 is in display or monochrome fill light state, the charge of the first electrode 1120 and the charge of the second electrode 1121 are not limited. The difference is that the greater the charge of the electrode, the stronger its attraction ability, the more particles are attracted on this side, and the fewer particles are attracted on the other side.

[0085] In some embodiments of the present application, see Figure 6 and Figure 7 As shown, a plurality of fill light units 110 are provided in the fill light area 100b. Adjacent fill light units 110 are arranged at intervals. By using a plurality of fill light units 110, external light can be converted into more visible light, and the visible light can be reflected to the outside world to fill light for the object to be photographed, further improving the fill light effect, and thus improving the photographing effect. In addition, by using a plurality of fill light units 110, a display effect can be achieved, and the display screen of the display panel 100 can be improved.

[0086] In other embodiments of the present application, a ring-shaped fill light unit 110 is provided in the fill light area 100b. The electrode structures in the fill light unit 110 are all ring-shaped structures. By controlling the charge of the first electrode 1120 and the second electrode 1121, the moving directions of the light conversion particles 1111 and the black particles 1112 are controlled, thereby realizing the switching between the black state and the fill light state. The moving directions of the color particles 1113 can also be controlled by controlling the electrical properties of the first electrode 1120 and the second electrode 1121 to realize monochrome fill light.

[0087] It is understandable that when the fill light area 100b has only one fill light unit 110, the fill light unit 110 can be designed in different shapes according to the design shape of the fill light area 100b. For example, the cross section of the fill light area 100b is square and the cross section of the fill light unit 110 is square.

[0088] In some embodiments of the present application, when a plurality of fill light units 110 are provided in the fill light area 100b, they can perform selective fill light according to required conditions and perform intelligent fill light to further improve the photographic effect.

[0089] That is, multiple fill light units 110 can be combined with pattern algorithms to control the electrical properties of the first electrode 1120, the second electrode 1121, the third electrode 1122 and the fourth electrode 1123, thereby controlling a portion of the fill light units 110 to be in a fill light state and another portion to be in a black state; or controlling all the fill light units 110 to be in a monochrome fill light state to achieve a monochrome ambient light, etc. This solution can intelligently select the required fill light conditions according to the conditions of the object to be photographed, further improving the photographic effect. In addition, facial shadows can be added in self-portraits to improve photographic effects and reduce costs.

[0090] In some embodiments of the present application, see Figure 6 and Figure 7 As shown, a plurality of fill light pixel units 100c are provided in the fill light area 100b. Each fill light pixel unit 100c includes at least one color fill light unit 110. The difference between different color fill light units 110 is that the color of the color particles 1113 inside them is different. For example, the color particles 1113 in the red fill light unit 110a are red particles, the color particles 1113 in the green fill light unit 110b are green particles, and the color particles 1113 in the blue fill light unit 110c are blue particles.

[0091] For example, each fill light pixel unit 100c includes a red fill light unit 110a. At this time, when the light-emitting structure 120 is in a light-emitting state and the red particles in the red fill light unit 110a are located on the first electrode 1120 and the second electrode 1121 side, the fill light area 100b presents a red fill light state, and irradiates the red light onto the object to be photographed to provide monochrome ambient light fill light for the object.

[0092] In some embodiments of the present application, each fill light pixel unit 100c includes a red fill light unit 110a, a green fill light unit 110b, and a blue fill light unit 110c. When the red particles, green particles, and blue particles in the red fill light unit 110a, the green fill light unit 110b, and the blue fill light unit 110c are located on the side of the first electrode 1120 and / or the second electrode 1121, and when the light emitting structure 120 is in a light emitting state, the light in the red fill light unit 110a, the green fill light unit 110b, and the blue fill light unit 110c is mixed into white light, and is emitted to the outside world to fill light the object to be photographed. That is to say, when the color particles 1113 in the fill light pixel unit 100c are located on the side of the first electrode 1120, fill light processing can also be achieved for the object to be photographed, so that the fill light area 100b is in a fill light state.

[0093] It should be noted that see Figure 6 and Figure 7 As shown, the fill light pixel unit 100c uses a red fill light unit 110a, a green fill light unit 110b and a blue fill light unit 110c, and according to the light mixing between the fill light units 110, the fill light area 100b can realize the display image. That is to say, the use of the red fill light unit 110a, the green fill light unit 110b and the blue fill light unit 110c can not only realize the fill light effect, but also enable the fill light area 100b to realize the display effect. That is to say, the fill light area 100b can switch between the display and fill light states.

[0094] In some embodiments of the present application, see Figure 8 and Fig. 9 As shown, the display panel 100 also includes a driving backplane 130, which may include a substrate and circuit structures such as thin film transistors and wiring arranged on the substrate, which can be used to connect to the first anode 1220, the second anode 1410, and the electrode structure to release a driving signal.

[0095] In some embodiments of the present application, see Figure 8 and Fig. 9 As shown, the light emitting structure 120 may adopt an LED light emitting element 121 , such as an LED lamp bead; the light emitting structure 120 may also adopt a white light OLED 122 .

[0096] For example, see Figure 8 As shown, when the light emitting structure 120 uses an LED light emitting element 121, the LED light emitting element 121 is disposed on a side of the driving back plate 130 away from the second electrode 1121, and the LED light emitting element 121 is located in the fill light area 100b. It is worth mentioning that the LED light emitting element 121 can correspond to the fill light unit 110 one by one, or one LED light emitting element 121 can correspond to multiple fill light units 110.

[0097] For another example, see Fig. 9 As shown, the light emitting structure 120 adopts a white light OLED 122. The light emitting structure 120 is arranged between the driving backplane 130 and the fill light unit 110. The light emitting structure 120 includes a first anode 1220, a first organic light emitting portion 1221 and a first cathode 1222. The first organic light emitting portion 1221 is arranged between the first anode 1220 and the first cathode 1222, and the first anode 1220 is electrically connected to the driving backplane 130. The first organic light emitting portion 1221 can emit white light to the fill light unit 110 under the action of the first anode 1220 and the first cathode 1222, so as to emit light to the fill light unit 110. It is worth mentioning that one fill light unit 110 can correspond to one light emitting structure 120, and multiple fill light units 110 can correspond to one light emitting structure 120. When the fill light units 110 correspond to the light emitting structures 120 one by one, adjacent first anodes 1220 are spaced apart from each other, and the first organic light emitting parts 1221 between adjacent fill light units 110 can be spaced apart by the pixel definition parts to avoid crosstalk and ensure the display effect.

[0098] It is understandable that when the light emitting structure 120 is a white light OLED 122 , the first cathode 1222 of the light emitting structure 120 in the light supplement area 100 b may be a whole-surface structure to reduce costs.

[0099] In addition, the light emitting structure 120 can be in a light emitting state when the fill light area 100b is in a display or monochromatic light fill light state. The light emitting structure 120 can be in an on or off state when the fill light area 100b is in a black state. When the light emitting structure 120 is in an on state, the light emitted by the light emitting structure 120 can be reflected and consumed by the light conversion particles 1111, so that the fill light area 100b is in a black state.

[0100] In some embodiments of the present application, see Figure 6 and Figure 7 As shown, the display panel 100 further includes a display area 100d, which is used to present a display image. The display area 100d can be arranged around the fill light area 100b, and a plurality of pixel units 140 arranged in an array are arranged in the display area 100d, each pixel unit 140 is arranged at intervals, and each pixel unit 140 can include a plurality of sub-pixels 141.

[0101] For example, see Figure 6 and Figure 7 As shown, each pixel unit 140 includes a red sub-pixel 141a, a green sub-pixel 141b and a blue sub-pixel 141c. The red sub-pixel 141a can emit red light, the green sub-pixel 141b can emit green light, and the blue sub-pixel 141c can emit blue light.

[0102] In some embodiments of the present application, the projection area of ​​the fill light unit 110 on the driving backplane 130 may be an integer multiple of the projection area of ​​the pixel unit 140 on the driving backplane 130 .

[0103] For example, see Figure 6 and Figure 7 As shown, the projection area of ​​the fill light unit 110 on the driving backplane 130 is 1 times the projection area of ​​the pixel unit 140 on the driving backplane 130, that is, the size of the fill light unit 110 is the same as the size of the pixel unit 140. This ensures that more fill light units 110 are arranged in the fill light area 100b.

[0104] In another example, the projection area of ​​the fill light unit 110 on the driving backplane 130 is twice the projection area of ​​the pixel unit 140 on the driving backplane 130, that is, the size of the fill light unit 110 is larger than the size of the pixel unit 140. In the fill light area 100b of the same size, the number of fill light units 110 arranged is less than the number of fill light units 110 of the same size as the pixel unit 140.

[0105] It can be understood that, when the fill light unit 110 is smaller, the fill light effect of the fill light area 100 b is more precise, the fill light effect on the photographed object is better, and the photographing effect is improved.

[0106] In some embodiments of the present application, see Figure 6 and Figure 7 As shown, the projection area of ​​the fill light unit 110 on the driving backplane 130 is the same as the projection area of ​​the pixel unit 140 on the driving backplane 130. And the arrangement between the fill light unit 110 and the pixel unit 140 is the same as the arrangement of the pixel unit 140 in the display area 100d, so that the arrangement of the fill light unit 110 in the fill light area 100b is the same as the arrangement of the pixel unit 140 in the display area 100d, so that the position of the fill light unit 110 in the fill light area 100b can be reasonably arranged, and the fill light unit 110 is prevented from occupying too much position in the display area 100d, so as to ensure the aperture ratio in the display area 100d, and then ensure the display effect. In addition, by making the arrangement between the fill light unit 110 and the pixel unit 140 the same as the arrangement of the pixel unit 140 in the display area 100d, it can also be ensured that when the fill light area 100b participates in the display, the display screen of the fill light area 100b and the display area 100d has no color difference, so as to ensure the display effect.

[0107] For example, see Figure 6As shown, the shape of the pixel unit 140 in the display area 100d is a long strip, that is, the sub-pixels 141 are arranged in sequence in the row direction. Correspondingly, the fill light unit 110 is also a long strip structure, the size of the fill light unit 110 is the same as the size of the pixel unit 140, and the arrangement between the fill light unit 110 and the pixel unit 140 is the same as the arrangement of the pixel unit 140 in the display area 100d.

[0108] For another example, see Figure 7 As shown, the cross-sectional shape of the pixel unit 140 in the display area 100d is a rhombus, and the cross-sectional shape of the sub-pixel 141 is also a rhombus. The pixel unit 140 includes a red sub-pixel 141a, a blue sub-pixel 141c, and two green sub-pixels 141b. The size of the red sub-pixel 141a is the same as the size of the blue sub-pixel 141c, and the red sub-pixel 141a and the blue sub-pixel 141c are arranged in sequence in the column direction. The size of the two green sub-pixels 141b is the same, and the size of the green sub-pixel 141b is smaller than the red sub-pixel 141a and the blue sub-pixel 141c, and the two green sub-pixels 141b are arranged in sequence in the row direction. The fill light unit 110 adopts the same rhombus structure as the pixel unit 140, and the arrangement between the fill light unit 110 and the pixel unit 140 is the same as the arrangement between the pixel units 140 in the display area 100d.

[0109] In other embodiments of the present application, when the pixel unit 140 in the display area 100d is relatively large (pixel unit ≥ 45 μm×45 μm), the fill light unit 110 in the fill light area 100b can be divided into three sub-pixels 141 like the pixel unit 140. When the pixel unit 140 in the display area 100d is relatively small (pixel unit < 45 μm×45 μm), the fill light unit 110 in the fill light area 100b can be the same size as one sub-pixel 141 in the pixel unit 140.

[0110] In some embodiments of the present application, see Figure 8 or Fig. 9 As shown, the display panel 100 may be an organic light emitting diode (OLED) display panel 100 .

[0111] In some embodiments of the present application, see Figure 8 and Fig. 9 As shown, each sub-pixel 141 in the pixel unit 140 includes a second anode 1410 , a second cathode 1411 , and a second organic light emitting portion 1412 disposed between the second anode 1410 and the second cathode 1411 .

[0112] It should be understood that the second anodes 1410 between the sub-pixels 141 are spaced apart from each other, so that the sub-pixels 141 can be driven independently of each other, and the second cathodes 1411 of the sub-pixels 141 can be connected to each other to form an entire surface electrode to reduce processing costs.

[0113] The first anode 1220 and the second anode 1410 can be made of indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO) or indium oxide (In2O3), etc. The first anode 1220 and the second anode 1410 are electrically connected to the thin film transistor on the driving backplane 130 to drive the first organic light emitting portion 1221 and the second organic light emitting portion 1412 to emit light, respectively.

[0114] In addition, the second organic light-emitting portion 1412 between each sub-pixel 141 is separated by a pixel definition portion, and the second organic light-emitting portion 1412 may include a hole injection layer, a hole transport layer, an organic light-emitting material layer, an electron transport layer and an electron injection layer stacked in sequence, the hole injection layer is in contact with the second anode 1410, and the electron injection layer is in contact with the second cathode 1411, but is not limited to this. The second organic light-emitting portion 1412 may also only include a hole transport layer, a light-emitting material layer and an electron transport layer, or other structures, depending on actual needs.

[0115] The second cathode 1411 may be formed after forming the second organic light emitting portion 1412, and is in contact with the second organic light emitting portion 1412. The first cathode 1222 and the second cathode 1411 may include a low work function material layer including Li, Ca, LiF / Ca, LiF / Al, Al, Mg, Ag, Pt, Pd, Ni, Au, Nd, Ir, Cr, BaF2, Ba, a compound thereof, or a mixture thereof, for example, the second cathode 1411 may include a low work function material layer made of a mixture of Ag and Mg.

[0116] It should be understood that the red sub-pixel 141a, the green sub-pixel 141b, and the blue sub-pixel 141c correspond to different luminescent colors of the second organic light-emitting portion 1412. For example, the red sub-pixel 141a refers to the luminescent color of the second organic light-emitting portion 1412 being red, the green sub-pixel 141b refers to the luminescent color of the second organic light-emitting portion 1412 being green, and the blue sub-pixel 141c refers to the luminescent color of the second organic light-emitting portion 1412 being blue.

[0117] In some embodiments of the present application, the first anode 1220 and the second anode 1410 are disposed in the same layer to save the manufacturing cost of the first electrode 1120 and the second electrode 1121 and reduce the production cost.

[0118] It should be understood that, in the present application, "same-layer arrangement" refers to the use of the same film-forming process to form a film layer for forming a specific pattern, and then using the same mask to form a layer structure through a single patterning process. That is, one patterning process corresponds to a mask (also called a photomask). Depending on the specific pattern, a single patterning process may include multiple exposure, development or etching processes, and the specific pattern in the formed layer structure may be continuous or discontinuous, and these specific patterns may also be at different heights or have different thicknesses, thereby simplifying the manufacturing process, saving manufacturing costs, and improving production efficiency.

[0119] It should be noted that the first anode 1220 may also be deposited as a separate electrode layer, that is, it is not disposed in the same layer as the second anode 1410 .

[0120] In addition, see Figure 8 or Fig. 9 As shown, the first electrode 1120 and the second cathode 1411 are arranged to be spaced apart from each other, that is, the fill light unit 110 is located between the second cathode 1411 and the driving backplane 130 .

[0121] It is worth mentioning that when the light emitting structure 120 is an LED light emitting element 121 , the second electrode 1121 can be arranged in the same layer as the second anode 1410 , or can be a separately deposited electrode layer, and the first electrode 1120 and the second cathode 1411 are arranged at intervals.

[0122] When the light emitting structure 120 is a white light OLED 122 structure, the first anode 1220 and the second anode 1410 can be arranged in the same layer, or the electrode layers can be deposited separately. The first cathode 1222 and the second cathode 1411 are arranged at intervals from each other and can be made of the same material, which is not specifically limited here.

[0123] It is worth mentioning that in order to control the electrical properties of the first electrode 1120, the second electrode 1121, the third electrode 1122 and the fourth electrode 1123, the present application can be implemented using an inverter circuit so that the control of the four electrodes can be achieved by only inputting two electrode signals.

[0124] In some embodiments of the present application, see Fig.10 and Fig.11 As shown, the inverter circuit can adopt a CMOS inverter circuit or an NMOS inverter circuit.

[0125] For example, see Fig.10As shown, when a CMOS inverter circuit is used, it includes an Input terminal, a PMOS tube, an NMOS tube, Vgh, Vgl and an Output terminal. The Input terminal is connected to the control terminals of the PMOS tube and the NMOS tube, the first end of the PMOS tube is connected to Vgh to input an electrical signal to the PMOS tube, the second end of the PMOS tube is connected to the first end of the NMOS tube and the Output terminal, and the second section of the NMOS tube is connected to Vgl. When a high-level signal is input to the Input terminal, the PMOS tube is turned off and the NMOS tube is turned on, so that the Output terminal is connected to Vgl, so that the Output outputs a low level. When a low-level signal is input to the Input terminal, the PMOS tube is turned on and the NMOS tube is turned off, so that the Output terminal is connected to Vgh, so that the Output outputs a high level.

[0126] For another example, see Fig.11 As shown, when an NMOS type inverter circuit is used, it includes an Input input terminal, a first transistor, a second transistor, Vgh, Vgl and an Output output terminal. The Input input terminal is connected to the control terminal of the second transistor, the control terminal and the first terminal of the first transistor are both connected to Vgh, the second terminal of the first transistor is connected to the Output output terminal and the first terminal of the second transistor, and the second terminal of the second transistor is connected to Vgl. When a high-level signal is input to the Input input terminal, the second transistor is turned on, the Output output terminal is connected to Vgl, and the Output output terminal outputs a low level. When a low-level signal is input to the Input input terminal, the second transistor is turned off, the Output output terminal is connected to Vgh, and the Output output terminal outputs a high level.

[0127] Among them, the first electrode 1120 or the second electrode 1121 is controlled separately as an electrode signal, as an Input input terminal signal, and the other is used as Vgl or Vgh; one of the third electrode 1122 and the fourth electrode 1123 can be used as the Output output terminal in the inverter circuit, and the other is used as Vgh or Vgl. The first electrode 1120 and the second electrode 1121 have an impact on the fill light effect, so they need to be controlled separately. Therefore, the above four electrodes only need to be fed with two electrode signals to realize the control of the four electrodes. This driving signal can be provided by the driving backplane 130.

[0128] It is worth mentioning that a voltage divider resistor may be added at the output end to make the charges of the electrodes on the two opposite sides different, so that the light conversion particles 1111 and the black particles 1112 move toward different electrodes respectively.

[0129] In some embodiments of the present application, see Figure 8 or Fig. 9 As shown, the display panel 100 further includes an encapsulation layer 150, which is located on the side of the second cathode 1411 away from the driving substrate, and can isolate external water and oxygen to avoid affecting the working states of the first organic light-emitting unit 1221, the second organic light-emitting unit 1412 and the compensation unit.

[0130] In some embodiments of the present application, see Figure 8 or Fig. 9 As shown, the display panel 100 further includes a color resist layer 160. The color resist layer 160 is disposed on a side of the encapsulation layer 150 away from the driving backplane 130. The color resist layer 160 includes a color resist area and a hollow area, and the color resist area is disposed around the hollow area. A plurality of color resist units are disposed in the color resist area, and the color resist units include a plurality of color resists, and the color resists correspond to the sub-pixels 141 one by one, that is, the red color resist 161a corresponds to the red sub-pixel 141a, the green color resist 161b corresponds to the green sub-pixel 141b, and the blue color resist 161c corresponds to the blue sub-pixel 141c. By setting the color resists corresponding to the respective sub-pixels 141, other miscellaneous colors can be filtered out, so as to ensure that the emitted colors are more vivid, and improve the display effect of the display area 100d.

[0131] It can be understood that a black matrix BM is provided between adjacent color resists to prevent crosstalk between adjacent color resists and ensure display effect.

[0132] In some embodiments of the present application, the hollow area is used to leak out the fill light unit 110 and the photosensitive element 200, and the external light is injected into the fill light unit 110 through the hollow area. The orthographic projection of the hollow area on the driving back plate 130 covers the orthographic projection of the fill light unit 110 and the photosensitive element 200 on the driving back plate 130, so as to ensure that the visible light reflected by the fill light unit 110 can act on the object to be photographed in a larger range, improve the fill light effect, and then improve the photography effect.

[0133] Embodiment 2

[0134] See also Figures 1 to 11 As shown, the second embodiment provides a display device, which includes the display panel 100 mentioned in the first embodiment and the photosensitive element 200 corresponding to the photosensitive area 100a. The present embodiment adopts the fill light area 100b as in the first embodiment, which can effectively fill light for the object to be photographed, improve the shooting brightness of the photosensitive element 200, and thus improve the imaging effect of the photosensitive element 200. In addition, the fill light unit 110 in this solution can also effectively reduce the use of fill light equipment, improve the convenience of taking pictures, and reduce costs. This display device can be a mobile phone, a tablet, etc.

[0135] In the description of this specification, the description with reference to the terms "some embodiments", "exemplarily", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0136] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent of this application.

Claims

1. A display panel having a photosensitive area corresponding to a photosensitive element, characterized in that: The display panel is further provided with a fill light area, the fill light area is arranged around the photosensitive area, a fill light unit is arranged in the fill light area, and the fill light unit includes: An electrophoretic structure comprises a shell, a dispersion liquid, light-converting particles and black particles arranged in the shell, wherein the light-converting particles and the black particles are both charged, and the light-converting particles and the black particles have the same charge; An electrode structure, comprising a first electrode and a second electrode spaced apart from each other, the first electrode and the second electrode being arranged opposite to each other, the electrophoresis structure being arranged between the first electrode and the second electrode, and external light being able to enter the electrophoresis structure through the first electrode; Among them, when electrical properties opposite to those of the photoconversion particles and the black particles are applied to the first electrode and the second electrode, and the charge of the first electrode is greater than or less than the charge of the second electrode, and the charge of the photoconversion particles is or less than the charge of the black particles, under the action of the electrode structure, the photoconversion particles move toward the first electrode, and the black particles move toward the second electrode. When external light is emitted to the photoconversion particles, the photoconversion particles can convert the external light into visible light and reflect the visible light back to the outside world to supplement the light in the area where the photosensitive element is located.

2. The display panel according to claim 1, characterized in that: The display panel further comprises a light emitting structure, wherein the light emitting structure is arranged on a side of the second electrode away from the first electrode; The electrophoretic structure further includes color particles disposed in the shell, the color particles are charged, and the electrical properties of the color particles are opposite to those of the light conversion particles; The electrode structure further includes a third electrode and a fourth electrode which are arranged opposite to each other. The third electrode and the fourth electrode are arranged outside the electrophoretic structure together with the first electrode and the second electrode. The third electrode and the fourth electrode have the same electrical properties and are opposite to the electrical properties of the first electrode and the second electrode. When the electrical properties of the first electrode and the second electrode are opposite to those of the color particles, and the electrical properties of the third electrode and the fourth electrode are opposite to those of the photoconversion particles, the color particles move toward the first electrode and the second electrode, the photoconversion particles move toward the third electrode or the fourth electrode, and the black particles move toward the fourth electrode or the third electrode, and the light emitted by the light-emitting structure can be emitted to the outside through the color particles.

3. The display panel according to claim 2, characterized in that: A plurality of fill light units are arranged in the fill light area, and adjacent fill light units are arranged at intervals.

4. The display panel according to claim 3, characterized in that: A plurality of fill light pixel units are provided in the fill light area, and each of the fill light pixel units includes a red fill light unit, a green fill light unit and a blue fill light unit; When the color particles in the red fill light unit, the green fill light unit and the blue fill light unit are located at the first electrode side at the same time and the light-emitting structure is in a light-emitting state, the fill light pixel unit presents white light and can fill light for the area where the photosensitive element is located.

5. The display panel according to claim 4, characterized in that: The display panel further comprises a driving backplane, wherein the driving backplane is electrically connected to the second electrode; The light emitting structure comprises an LED light emitting component, and the LED light emitting component is arranged on a side of the driving back plate away from the second electrode.

6. The display panel according to claim 5, characterized in that: The display panel also includes a driving backplane; The light emitting structure is disposed between the fill light unit and the driving backplane, and the light emitting structure comprises a first anode, a first organic light emitting portion and a first cathode, the first organic light emitting portion is disposed between the first anode and the first cathode, and the first anode is electrically connected to the driving backplane; The first organic light emitting portion can emit white light to the fill light unit under the action of the first anode and the first cathode.

7. The display panel according to claim 6, characterized in that: The display panel is further provided with a display area, the display area is arranged around the fill light area, and a plurality of pixel units arranged in an array are provided in the display area; The arrangement of the fill light units in the fill light area is the same as the arrangement of the pixel units in the display area, and the projection area of ​​the fill light units on the driving backplane is an integer multiple of the projection area of ​​the pixel units on the driving backplane.

8. The display panel according to claim 7, characterized in that: Each of the pixel units includes a plurality of sub-pixels, and adjacent sub-pixels are arranged at intervals; Each of the sub-pixels comprises a second anode, a second cathode, and a second organic light-emitting portion disposed between the second anode and the second cathode, the second anodes of adjacent sub-pixels are spaced apart from each other, and the second organic light-emitting portions of adjacent sub-pixels are spaced apart from each other; The first anode and the second anode are arranged in the same layer, and the first electrode and the second cathode are arranged at intervals.

9. The display panel according to claim 1, characterized in that: The photoconvertible particles include gelatin and deoxyribonucleic acid.

10. A display device, characterized in that: include: Photosensitive element; as well as In the display panel according to any one of claims 1 to 9, the photosensitive element corresponds to the photosensitive area, and the fill light unit is arranged around the photosensitive element.

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