Display panel and display device

Abstract

The application 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 supplement area. The light supplement area is provided with a light supplement unit. The light supplement unit comprises an electrophoretic structure and an electrode structure. The light conversion particles and the black particles in the electrophoretic structure are charged and have the same electric property. The first electrode and the second electrode in the electrode structure are oppositely arranged. External light can pass through the first electrode and enter the electrophoretic structure. When the first electrode and the second electrode are electrified, the electric quantity of the first electrode is greater than or smaller than the electric quantity of the second electrode. When the electric quantity of the light conversion particles is equal to or smaller than the electric quantity of the black particles, the light conversion particles move to the first electrode and the black particles move to the second electrode under the action of the electrode structure. When the external light is incident on the light conversion particles, the light conversion particles can convert the external light into visible light and reflect it back to the outside, so as to supplement the light of the area where the light sensing element is located. The object photographed by the light sensing element can be supplemented by the external light.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of display, and particularly relates to a display panel and a display device. BACKGROUND

[0002] At present, mobile phone photographing gradually replaces the role of cameras. With the development of electronic technology, the function of mobile phone photographing is more and more comprehensive, and the demand of users for photographing is also higher and higher.

[0003] In the prior art, when photographing is performed by using a mobile phone, an external light supplement method, such as a light supplement plate or a light striking mode, needs to be used. However, the external light supplement method is not very convenient for photographing. SUMMARY

[0004] The present application aims to provide a display panel and a display device, which can solve the problem of needing to supplement light when photographing.

[0005] The present application provides a display panel in a first aspect, which is provided with a light sensing area corresponding to a light sensing element, and is further provided with a light supplement area, the light supplement area is arranged around the light sensing area, and the light supplement area is provided with a light supplement unit, the light supplement unit comprises:

[0006] An electrophoretic structure, which comprises an outer shell, a dispersion liquid, light conversion particles and black particles arranged in the outer shell, the light conversion particles and the black particles are charged, and the light conversion particles and the black particles have the same electric property;

[0007] An electrode structure, which comprises a first electrode and a second electrode arranged at a distance from each other, the first electrode and the second electrode are arranged oppositely, the electrophoretic structure is arranged between the first electrode and the second electrode, and external light can enter the electrophoretic structure through the first electrode;

[0008] When the electric property opposite to the electric property of the light conversion particles and the black particles is applied to the first electrode and the second electrode, and the electric quantity of the first electrode is greater than or smaller than the electric quantity of the second electrode, and the electric quantity of the light conversion particles is greater than or smaller than the electric quantity of the black particles, the light conversion particles move to the first electrode and the black particles move to the second electrode under the action of the electrode structure, when external light is incident on the light conversion particles, the light conversion particles can convert the external light into visible light and reflect the visible light back to the outside, so as to supplement light for the area where the light sensing element is located.

[0009] In an exemplary embodiment of the present application, the display panel further comprises a light emitting structure arranged on the side of the second electrode away from the first electrode.

[0010] The electrophoretic structure further comprises color particles arranged in the housing, the color particles are charged, and the electric property of the color particles is opposite to that of the photo-conversion particles;

[0011] The electrode structure further comprises oppositely arranged third and fourth electrodes, the third and fourth electrodes are arranged outside the electrophoretic structure together with the first and second electrodes, the third and fourth electrodes have the same electric property which is opposite to that of the first and second electrodes;

[0012] When the electric property of the first and second electrodes is opposite to that of the color particles, and the electric property of the third and fourth electrodes is opposite to that of the photo-conversion particles, the color particles move towards the first and second electrodes, the photo-conversion particles move towards the third or fourth electrode, the black particles move towards the fourth or third electrode, and the light emitted by the light-emitting structure can pass through the color particles and be emitted to the outside.

[0013] In an exemplary embodiment of the present application, the light supplementing region comprises a plurality of light supplementing units, and adjacent light supplementing units are arranged at intervals.

[0014] In an exemplary embodiment of the present application, the light supplementing region comprises a plurality of light supplementing pixel units, each of which comprises a red light supplementing unit, a green light supplementing unit and a blue light supplementing unit.

[0015] When the color particles in the red, green and blue light supplementing units are all located on the side of the first electrode, and the light-emitting structure is in the light-emitting state, the light supplementing pixel unit appears white and can supplement light for the area where the photosensitive element is located.

[0016] In an exemplary embodiment of the present application, the display panel further comprises a driving back plate, and the driving back plate is electrically connected to the second electrode.

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

[0018] In an exemplary embodiment of the present application, the display panel further comprises a driving back plate.

[0019] The light-emitting structure is arranged between the light supplementing unit and the driving back plate, the light-emitting structure comprises a first anode, a first organic light-emitting part and a first cathode, the first organic light-emitting part is arranged between the first anode and the first cathode, and the first anode is electrically connected to the driving back plate.

[0020] The first organic light-emitting part is capable of emitting white light to the light supplementing 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, which is arranged around the light supplementing area, and a plurality of pixel units are arranged in an array in the display area.

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

[0023] In an exemplary embodiment of the present application, each pixel unit comprises a plurality of sub-pixels, and adjacent sub-pixels are arranged at intervals.

[0024] Each sub-pixel comprises a second anode, a second cathode, and a second organic light-emitting part arranged between the second anode and the second cathode, the second anodes of adjacent sub-pixels are arranged at intervals, and the second organic light-emitting parts of adjacent sub-pixels are arranged at intervals.

[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 light conversion particles comprise gelatin and deoxyribonucleic acid.

[0027] The second aspect of the present application provides a display device, comprising:

[0028] a light sensing element; and

[0029] The display panel of any one of the above, the light sensing element corresponds to the light sensing area, and the light supplementing unit is arranged around the light sensing element.

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

[0031] The peripheral of the photosensitive area is provided with a light supplement area with a light supplement unit, and the moving direction of the photoconversion particles and the black particles in the electrophoretic structure can be controlled by controlling the electricity of the first electrode and the second electrode in the electrode structure; when the electricity of the first electrode is different from that of the photoconversion particles and the black particles, and the electricity of the first electrode is greater than or smaller than that of the second electrode, and the electricity of the photoconversion particles is greater than or smaller than that of the black particles, the photoconversion particles move to the first electrode, and the black particles move to the second electrode; when the external light enters the electrophoretic structure from the first electrode, the photoconversion particles convert the external light into visible light, and reflect the visible light to the outside, so that the visible light irradiates on the object with the photographed object, so as to supplement the light for the object photographed by the photosensitive element. That is, the present application can supplement the light for the object photographed by the photosensitive element with the help of external light, can reduce the use of light supplement equipment, can make the mobile phone photographing light supplement more convenient, can achieve the light supplement effect without light supplement equipment, can effectively improve the photographing effect, and can reduce the use cost of the light supplement equipment.

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

[0033] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0034] The drawings incorporated into the specification and constituting a part of the specification show embodiments consistent with the present application and, together with the specification, serve to explain the principles of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0035] Figure 1 A structure schematic diagram of the display panel provided by the first embodiment or the second embodiment of the present application is shown.

[0036] Figure 2 A cross-sectional structure schematic diagram of the light supplement unit provided by the first embodiment or the second embodiment of the present application is shown.

[0037] Figure 3 A structure schematic diagram of the light supplement unit in the light supplement state provided by the first embodiment or the second embodiment of the present application is shown.

[0038] Figure 4 A structure schematic diagram of the light supplement unit in the black state provided by the first embodiment or the second embodiment of the present application is shown.

[0039] Figure 5A structure schematic diagram of the light supplement unit provided by the embodiment one or the embodiment two is shown.

[0040] Figure 6 A structure schematic diagram of the pixel unit in the display area provided by the embodiment one or the embodiment two is shown.

[0041] Figure 7 A structure schematic diagram of the pixel unit in the display area provided by the embodiment one or the embodiment two is shown.

[0042] Figure 8 A structure schematic diagram of the light emitting structure provided by the embodiment one or the embodiment two is shown.

[0043] Figure 9 A structure schematic diagram of the light emitting structure provided by the embodiment one or the embodiment two is shown.

[0044] Figure 10 A circuit structure schematic diagram of the CMOS control electrode structure provided by the embodiment one or the embodiment two is shown.

[0045] Figure 11 A circuit structure schematic diagram of the NMOS control electrode structure provided by the embodiment one or the embodiment two is shown.

[0046] Legend of reference signs:

[0047] 100, display panel; 100a, light sensing area; 100b, light supplement area; 100c, light supplement pixel unit; 100d, display area; 110, light supplement unit; 110a, red light supplement unit; 110b, green light supplement unit; 110c, blue light supplement unit; 111, electrophoretic structure; 1110, shell; 1111, light conversion particle; 1112, black particle; 1113, color particle; 1120, first electrode; 1121, second electrode; 1122, third electrode; 1123, fourth electrode; 120, light emitting structure; 121, LED light emitting piece; 122, white light OLED; 1220, first anode; 1221, first organic light emitting part; 1222, first cathode; 130, driving back plate; 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 part; 150, encapsulating layer; 160, color resistance layer; 161a, red color resistance; 161b, green color resistance; 161c, blue color resistance; 200, light sensing element. DETAILED DESCRIPTION

[0048] Example implementations are now described with reference to the following drawings. The example implementations, however, can be implemented in many different forms and should not be construed as limited to the examples set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example implementations to those skilled in the art.

[0049] In the present application, the terms "first", "second", etc. are used only for descriptive purposes and should not be construed as implying or suggesting relative importance or an indicated number of the technical features. Thus, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0050] In the present application, unless otherwise explicitly specified and limited, the terms "assembly", "connection" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0051] In addition, the described features, structures or characteristics can be combined in any suitable way in one or more embodiments. In the following description, many specific details are provided to give a sufficient understanding of the embodiments of the present application. However, those skilled in the art will realize that the technical solutions of the present application can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. can be used. In other cases, well-known methods, devices, implementations or operations are not shown or described in detail to avoid obscuring the aspects of the present application.

[0052] Embodiment one

[0053] Referring to Figure 1 As shown in the drawings, the embodiments of the present application provide a display panel 100, the display panel 100 is provided with a light sensing area 100a corresponding to a light sensing element 200, and the light sensing element 200 can realize a photographing function. The display panel 100 further comprises a light supplementing area 100b arranged around the light sensing area 100a, and the light supplementing area 100b can supplement light for a to-be-photographed object when the light sensing element 200 is photographing, thereby improving the photographing effect, reducing the use of external light supplementing equipment, and reducing the cost.

[0054] It should be noted that the light sensing element 200 can be a front camera or a rear camera. When the light sensing element 200 is a front camera, the light sensing element 200 is an under-screen camera. It should be noted that the light sensing element 200 can be a front camera or a rear camera. When the light sensing element 200 is a front camera, the light sensing 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 light supplement area 100b is 50 to 100 sizes of the display area 100d pixel units 140 described below; for example, the width of the light supplement area 100b can be 50 pixel units 140 sizes, or 60 pixel units 140 sizes, or 70, 80, 90 or 100 pixel units 140 sizes. The width of the light supplement area 100b is 50 to 100 pixel units 140 sizes, which can supplement the light for the object to be photographed, and also can reduce the space occupied by the light supplement area 100b, ensure the aperture ratio of the display panel 100, and ensure the display effect.

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

[0057] In some embodiments of the present application, referring to FIG. 1, the cross section of the light supplement area 100b is circular, and the light supplement area 100b is connected with the photosensitive area 100a. The light supplement unit 110 is arranged in the light supplement area 100b, which is used to supplement the light for the object to be photographed, and improve the shooting effect of the photosensitive element 200. Figure 1 In some embodiments of the present application, referring to FIG. 1, the cross section of the light supplement area 100b is circular, and the light supplement area 100b is connected with the photosensitive area 100a. The light supplement unit 110 is arranged in the light supplement area 100b, which is used to supplement the light for the object to be photographed, and improve the shooting effect of the photosensitive element 200.

[0058] Figure 2 In some embodiments of the present application, referring to FIG. 1, the cross section of the light supplement area 100b is circular, and the light supplement area 100b is connected with the photosensitive area 100a. The light supplement unit 110 is arranged in the light supplement area 100b, which is used to supplement the light for the object to be photographed, and improve the shooting effect of the photosensitive element 200.

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

[0060] It should be noted that the electrophoretic structure 111 can be a microcapsule structure or a microcup structure, which can be 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, which 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 performed using physical or chemical methods. Physical methods include grinding and spraying. Chemical methods include coagulation, emulsion polymerization, or dispersion polymerization; in these methods, the polymer uses styrene (St) as a monomer and then introduces other different substances for polymerization.

[0063] Furthermore, the charge of the photoconversion particles 1111 can be achieved by coating or modifying biomass aerogel spheres with polymers, where the charge can be applied to the outer edge of the polymer during surface modification.

[0064] In some embodiments of this application, see Figure 2 As shown, the electrode structure includes a first electrode 1120 and a second electrode 1121 arranged at intervals between each other, with the first electrode 1120 and the second electrode 1121 arranged opposite to each other. The first electrode 1120 and the second electrode 1121 are located on opposite sides of the electrophoresis structure 111.

[0065] It should be noted that the first electrode 1120 and the second electrode 1121 have the same electrical charge. By controlling the difference in the electrical charge of the first electrode 1120 and the second electrode 1121, the movement of the photoconverting particles 1111 and the black particles 1112 toward different electrodes can be controlled. The movement direction of the photoconverting particles 1111 and the black particles 1112 in the electrophoretic structure 111 can be controlled by changing the electrical charge of the first electrode 1120 and the second electrode 1121.

[0066] Furthermore, external light can pass through the first electrode 1120 and reach the second electrode 1121. That is, the first electrode 1120 is located closer to the outside, and the first electrode 1120 is a transparent electrode, so that external light can pass through the first electrode 1120 and enter the second electrode 1121. The second electrode 1121 can be a transparent electrode or an opaque electrode, without specific limitation.

[0067] In some embodiments of this application, see Figure 3As shown, the first electrode 1120 and the second electrode 1121 are electrified, the first electrode 1120 and the second electrode 1121 are electrically the same, and the electricities of the first electrode 1120 and the second electrode 1121 are opposite to the electricities of the light conversion particles 1111 and the black particles 1112. When the electricity of the first electrode 1120 is greater or smaller than the electricity of the second electrode 1121, and the electricity of the light conversion particles 1111 is greater or smaller than the electricity of the black particles 1112, the light conversion particles 1111 move to the first electrode 1120 and the black particles 1112 move to the second electrode 1121 under the principle that the side with greater electrode electricity has stronger attraction to the particles with greater electricity, so that the light conversion particles 1111 are attached to the first electrode 1120 and the black particles 1112 are attached to the second electrode 1121, and the light conversion particles 1111 are closer to the outside than the black particles 1112. At this time, when the 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 is reflected to the outside to light the object to be photographed. That is, when the photosensitive element 200 takes a picture, the light conversion particles 1111 can light the object to be photographed with the external light, improve the shooting effect, reduce the use of lighting equipment, improve the convenience of shooting, and reduce the cost.

[0068] It should be noted that the light conversion particles 1111 light the object to be photographed with the external light, so in the case of stronger external light, the lighting intensity is greater, and the shooting effect of the photosensitive element 200 is better.

[0069] An example is shown in Figure 3 As shown, the electricity of the first electrode 1120 is greater than the electricity of the second electrode 1121, and the electricity of the light conversion particles 1111 is greater than the electricity of the black particles 1112. Under the action of the electrode structure, the side with greater electrode electricity has stronger attraction to the particles with greater electricity. Then the light conversion particles 1111 move to the first electrode 1120 and the black particles 1112 move to the second electrode 1121, so that the light conversion particles 1111 are attached to the first electrode 1120 and the black particles 1112 are attached to the second electrode 1121, and the light conversion particles 1111 are closer to the outside than the black particles 1112, and the electrophoretic structure 111 presents a lighting state.

[0070] Another example is that the electricity of the first electrode 1120 is smaller than the electricity of the second electrode 1121, and the electricity of the light conversion particles 1111 is smaller than the electricity of the black particles 1112. Under the action of the electrode structure, the side with greater electrode electricity has stronger attraction to the particles with greater electricity. Similarly, the light conversion particles 1111 move to the first electrode 1120 and the black particles 1112 move to the second electrode 1121 to achieve lighting.

[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 light-converting particles 1111 is less than that of the black particles 1112, the black particles 1112 gradually move towards the first electrode 1120, and the light-converting particles 1111 move towards the second electrode 1121, due to the principle that the side with the larger charge of the electrode attracts the larger charged particles more strongly. At this time, the black particles 1112 are attached to the side of the first electrode 1120, and the light-converting particles 1111 are attached to the side of the second electrode 1121. When external light enters the electrophoretic structure 111 from the first electrode 1120, the black particles 1112 absorb the external light, making the electrophoretic structure 111 appear black and without any supplementary lighting effect.

[0072] Understandably, black particle 1112 can be a light-absorbing sphere for the black matrix (BM).

[0073] In addition, depending on the condition of the object being photographed, the fill light area 100b can be controlled to be in a fill light state or in a dark state.

[0074] It is worth mentioning that the light-converting particles 1111 and the black particles 1112 can be either positively or negatively charged, and the specific design can be tailored according to different embodiments.

[0075] In some embodiments of this application, both the light-converting particles 1111 and the black particles 1112 are nanometer-sized. Furthermore, both the light-converting particles 1111 and the black particles 1112 have spherical structures to ensure both light conversion and shading effects.

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

[0077] In some embodiments of this application, see Figure 5 As shown, the electrophoretic structure 111 also includes color particles 1113. These color particles 1113 can be color-blocking filters, which, when light passes through them, can produce light of the same color as the color-blocking filters. The color particles 1113 are charged, and their charge is opposite to that of the light-converting particles 1111.

[0078] In some embodiments of this application, see Figure 3 to Figure 5As shown, the electrode structure further comprises a third electrode 1122 and a fourth electrode 1123. The third electrode 1122 and the fourth electrode 1123 are oppositely arranged, 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 the receiving space to avoid the electrophoretic structure 111 from sliding and ensure the stability of the electrophoretic structure 111.

[0079] In some embodiments of the present application, the third electrode 1122 and the fourth electrode 1123 have the same electrical property, and the electrical property of the third electrode 1122 and the fourth electrode 1123 is opposite to that of the first electrode 1120 and the second electrode 1121. When the first electrode 1120 and the second electrode 1121 are supplied with an electrical property opposite to that of the color particles 1113, and the third electrode 1122 and the fourth electrode 1123 are supplied with an electrical property opposite to that of the light conversion particles 1111, the color particles 1113 move to the side of the first electrode 1120 and / or the second electrode 1121, and the movement direction of the light conversion particles 1111 and the black particles 1112 is determined according to the electrical quantity of the third electrode 1122 and the fourth electrode 1123 and the electrical quantity of the light conversion particles 1111 and the black particles 1112.

[0080] In some embodiments of the present application, referring to 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 enabling the light supplementing area 100b to present a display effect or achieve a single-color light supplementing effect.

[0081] For example, referring to Figure 3As shown, the light conversion particles 1111 and the black particles 1112 are positively charged, the light conversion particles 1111 have a greater charge than 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 first electrode 1120 has a greater charge than the second electrode 1121, and the third electrode 1122 and the fourth electrode 1123 are positively charged. Under the action of the electrodes, the light conversion particles 1111 move towards the first electrode 1120, the black particles 1112 move towards the second electrode 1121, and the color particles 1113 move towards the third electrode 1122 and / or the fourth electrode 1123. The light conversion particles 1111 are attached to the side of the first electrode 1120, the black particles 1112 are attached to the side of the second electrode 1121, and the color particles 1113 are attached to the side of the third electrode 1122 and / or the fourth electrode 1123. 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, i.e., the visible light is reflected to the outside, and the object to be photographed is supplemented with light, so that the light supplementing unit 110 is in a light supplementing state. That is, when the photosensitive element 200 takes a picture, the light conversion particles 1111 can supplement the object to be photographed with light with the aid of external light, improve the picture taking effect, reduce the use of light supplementing equipment, improve the convenience of picture taking, and reduce costs.

[0082] In another example, referring to Figure 4 As shown, the light conversion particles 1111 and the black particles 1112 are positively charged, the light conversion particles 1111 have a greater charge than 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 first electrode 1120 has a greater charge than the second electrode 1121, and the third electrode 1122 and the fourth electrode 1123 are positively charged. Under the action of the electrodes, the light conversion particles 1111 move towards the first electrode 1120, the black particles 1112 move towards the second electrode 1121, and the color particles 1113 move towards the third electrode 1122 and / or the fourth electrode 1123. The light conversion particles 1111 are attached to the side of the first electrode 1120, the black particles 1112 are attached to the side of the second electrode 1121, and the color particles 1113 are attached to the side of the third electrode 1122 and / or the fourth electrode 1123. 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, i.e., the visible light is reflected to the outside, and the object to be photographed is supplemented with light, so that the light supplementing unit 110 is in a light supplementing state. That is, when the photosensitive element 200 takes a picture, the light conversion particles 1111 can supplement the object to be photographed with light with the aid of external light, improve the picture taking effect, reduce the use of light supplementing equipment, improve the convenience of picture taking, and reduce costs.

[0083] In another example, referring to Figure 5As shown, the photo-conversion particles 1111 and the black particles 1112 are positively charged, the photo-conversion particles 1111 are charged less than 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 third electrode 1122 is charged more or less than the fourth electrode 1123. Under the action of the electrodes, the color particles 1113 move to the first electrode 1120 and / or the second electrode 1121, the photo-conversion particles 1111 move to the third electrode 1122 or the fourth electrode 1123, and the black particles 1112 move to the fourth electrode 1123 or the third electrode 1122, so as to avoid the photo-conversion particles 1111 and the black particles 1112 from blocking the light emitted by the light-emitting structure 120. At this time, the color particles 1113 are attached to the first electrode 1120 and / or the second electrode 1121, the photo-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 color light of the same color as the color particles 1113 is generated through the filtering of the color particles 1113, and the color light is emitted to the outside through the first electrode 1120, so that the light supplementing unit 110 is in a display or monochromatic light supplementing state.

[0084] In the display or monochromatic light supplementing state of the light supplementing unit 110, the charge amount of the first electrode 1120 and the charge amount of the second electrode 1121 are not limited in size, but differ in that the greater the charge amount of the electrode, the stronger the attraction ability, and the more the number of particles attracted on this side, and the fewer the number of particles on the other side.

[0085] In some embodiments of the present application, referring to Figs. 1B and 1C, Figure 6 and Figure 7 As shown, the light supplementing area 100b is provided with a plurality of light supplementing units 110. Adjacent light supplementing units 110 are arranged at intervals. By using a plurality of light supplementing units 110, more visible light can be converted from external light, and the visible light can be reflected to the outside, so as to supplement the light for the object to be photographed, further improve the light supplementing effect, and further improve the photographing effect. In addition, the use of a plurality of light supplementing units 110 can also achieve a display effect and improve the display screen of the display panel 100.

[0086] In some embodiments of the present application, the light supplementing region 100b is provided with a ring-shaped light supplementing unit 110. The electrode structure in the light supplementing unit 110 is ring-shaped. By controlling the electric quantity of the first electrode 1120 and the second electrode 1121, the moving direction of the light conversion particles 1111 and the black particles 1112 is controlled, and the switching between the black state and the light supplementing state is realized. The moving direction of the color particles 1113 can also be controlled by controlling the electric property of the first electrode 1120 and the second electrode 1121, so as to realize monochromatic light supplementing.

[0087] It can be understood that when the light supplementing region 100b is provided with only one light supplementing unit 110, the light supplementing unit 110 can be designed in different shapes according to the design shape of the light supplementing region 100b. For example, when the cross section of the light supplementing region 100b is square, the cross section of the light supplementing unit 110 is also square.

[0088] In some embodiments of the present application, when the light supplementing region 100b is provided with multiple light supplementing units 110, selective light supplementing can be realized according to the required conditions, intelligent light supplementing is realized, and the photographing effect is further improved.

[0089] That is, the multiple light supplementing units 110 can control the electric property of the first electrode 1120, the second electrode 1121, the third electrode 1122 and the fourth electrode 1123 by combining the pattern algorithm, and then control a part of the light supplementing units 110 to be in the light supplementing state and control another part to be in the black state, or control all the light supplementing units 110 to be in monochromatic light supplementing, realize monochromatic ambient light, and so on. According to the situation of the object to be photographed, the required light supplementing conditions can be intelligently selected, and the photographing effect is further improved. In addition, the face shadow can be increased in the self-photographing, the photographing effect is improved, and the cost is reduced.

[0090] In some embodiments of the present application, as shown in FIGS. 1B and 1C, the light supplementing region 100b is provided with multiple light supplementing units 110. Figure 6 and Figure 7 As shown in FIGS. 1B and 1C, the light supplementing region 100b is provided with multiple light supplementing pixel units 100c. Each light supplementing pixel unit 100c includes at least one color light supplementing unit 110. The different color light supplementing units 110 are different in that the color of the color particles 1113 in the color light supplementing units 110 is different. For example, the color particles 1113 in the red light supplementing unit 110a are red particles, the color particles 1113 in the green light supplementing unit 110b are green particles, and the color particles 1113 in the blue light supplementing unit 110c are blue particles.

[0091] For example, each light supplementing pixel unit 100c includes a red light supplementing unit 110a. When the light emitting structure 120 is in the light emitting state and the red particles in the red light supplementing unit 110a are located at the side of the first electrode 1120 and the second electrode 1121, the light supplementing region 100b presents a red light supplementing state, and red light is irradiated on the object to be photographed, so as to perform monochromatic ambient light supplementing on the object.

[0092] In some embodiments of the present application, each light supplementing pixel unit 100c comprises a red light supplementing unit 110a, a green light supplementing unit 110b and a blue light supplementing unit 110c. When the red, green and blue particles in the red light supplementing unit 110a, the green light supplementing unit 110b and the blue light supplementing unit 110c are located at the side of the first electrode 1120 and / or the second electrode 1121 and the light emitting structure 120 is in the light emitting state, the light in the red light supplementing unit 110a, the green light supplementing unit 110b and the blue light supplementing unit 110c mixes into white light and is emitted to the outside to supplement the light for the object to be photographed. That is, when the color particles 1113 in the light supplementing pixel unit 100c are located at the side of the first electrode 1120, the light supplementing process for the object to be photographed can also be realized to make the light supplementing area 100b in the light supplementing state.

[0093] It should be noted that, as shown in Figure 6 and Figure 7 , the light supplementing pixel unit 100c adopts the red light supplementing unit 110a, the green light supplementing unit 110b and the blue light supplementing unit 110c to mix the light between the light supplementing units 110 so that the light supplementing area 100b can realize the display picture. That is, the red light supplementing unit 110a, the green light supplementing unit 110b and the blue light supplementing unit 110c can not only realize the light supplementing effect but also make the light supplementing area 100b realize the display effect. That is, the light supplementing area 100b can be switched between the display state and the light supplementing state.

[0094] In some embodiments of the present application, as shown in Figure 8 and Figure 9 , the display panel 100 further comprises a driving back plate 130 which can comprise a substrate, a thin film transistor and a circuit structure such as a wiring on the substrate, which can be used to connect with the first anode 1220, the second anode 1410 and the electrode structure to release the driving signal.

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

[0096] For example, as shown in Figure 8 , when the light emitting structure 120 adopts the LED light emitting piece 121, the LED light emitting piece 121 is arranged at the side of the driving back plate 130 away from the second electrode 1121 and the LED light emitting piece 121 is located in the light supplementing area 100b. It is worth mentioning that the LED light emitting piece 121 can correspond to one light supplementing unit 110 one by one or one LED light emitting piece 121 can correspond to multiple light supplementing units 110.

[0097] Another example, see Figure 9 As shown, the light-emitting structure 120 adopts a white light OLED 122. The light-emitting structure 120 is arranged between the driving back plate 130 and the light supplement unit 110. The light-emitting structure 120 includes a first anode 1220, a first organic light-emitting part 1221 and a first cathode 1222, the first organic light-emitting part 1221 is arranged between the first anode 1220 and the first cathode 1222, and the first anode 1220 is electrically connected with the driving back plate 130. The first organic light-emitting part 1221 can emit white light to the light supplement unit 110 under the action of the first anode 1220 and the first cathode 1222, so as to emit light to the light supplement unit 110. It is worth mentioning that one light supplement unit 110 can correspond to one light-emitting structure 120, and multiple light supplement units 110 can also correspond to one light-emitting structure 120. When the light supplement unit 110 corresponds to the light-emitting structure 120 one by one, the adjacent first anodes 1220 are spaced apart from each other, and the first organic light-emitting parts 1221 between the adjacent light supplement units 110 can be spaced apart by a pixel defining part, so as to avoid mutual crosstalk and ensure the display effect.

[0098] It can be understood 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 100b can be a full-surface structure, so as to reduce the cost.

[0099] In addition, the light-emitting structure 120 can be in a light-emitting state when the light supplement area 100b is in a display or monochromatic light supplement state. The light-emitting structure 120 can be in an open or closed state when the light supplement area 100b is in a black state. When the light-emitting structure 120 is in an open state, the light emitted by the light-emitting structure 120 can be reflected and consumed by the light conversion particles 1111, so that the light supplement 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 for presenting a display picture. The display area 100d can be arranged around the light supplement 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 spaced apart from each other, 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 light supplement unit 110 on the driving backboard 130 can be an integer multiple of the projection area of the pixel unit 140 on the driving backboard 130.

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

[0104] For another example, the projection area of the light supplement unit 110 on the driving backboard 130 is 2 times of the projection area of the pixel unit 140 on the driving backboard 130, that is, the size of the light supplement unit 110 is larger than the size of the pixel unit 140. In the same size light supplement area 100b, the arrangement number of the light supplement unit 110 is less than the arrangement number of the light supplement unit 110 with the same size as the pixel unit 140.

[0105] It can be understood that the smaller the light supplement unit 110 is, the more accurate the light supplement effect of the light supplement area 100b is, and the better the light supplement effect on the object to be photographed is, thereby improving the photographing effect.

[0106] In some embodiments of the present application, as shown in Figure 6 and Figure 7 , the projection area of the light supplement unit 110 on the driving backboard 130 is the same as the projection area of the pixel unit 140 on the driving backboard 130. The arrangement mode between the light supplement unit 110 and the pixel unit 140 is the same as the arrangement mode of the pixel unit 140 in the display area 100d, so that the arrangement mode of the light supplement unit 110 in the light supplement area 100b is the same as the arrangement mode of the pixel unit 140 in the display area 100d. This can reasonably arrange the position of the light supplement unit 110 in the light supplement area 100b, avoid the light supplement unit 110 occupying too much position of the display area 100d, ensure the aperture ratio in the display area 100d, and further ensure the display effect. In addition, by the same arrangement mode between the light supplement unit 110 and the pixel unit 140 and the arrangement mode of the pixel unit 140 in the display area 100d, the display picture of the light supplement area 100b and the display area 100d can be ensured to have no color difference when the light supplement area 100b participates in display, thereby ensuring the display effect.

[0107] For example, as shown in Figure 6As shown in FIG. 1, the pixel units 140 in the display area 100d are in a long strip shape, i.e., the sub-pixels 141 are arranged in a row direction. Correspondingly, the light supplement units 110 are also in a long strip shape, the size of the light supplement units 110 is the same as that of the pixel units 140, and the arrangement manner between the light supplement units 110 and the pixel units 140 is the same as that of the pixel units 140 in the display area 100d.

[0108] As shown in FIG. 2, the pixel units 140 in the display area 100d are in a long strip shape, i.e., the sub-pixels 141 are arranged in a row direction. Correspondingly, the light supplement units 110 are also in a long strip shape, the size of the light supplement units 110 is the same as that of the pixel units 140, and the arrangement manner between the light supplement units 110 and the pixel units 140 is the same as that of the pixel units 140 in the display area 100d. Figure 7 As shown in FIG. 3, the cross-sectional shape of the pixel units 140 in the display area 100d is a rhombus, and the cross-sectional shape of the sub-pixels 141 is also a rhombus. The pixel units 140 include 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 that of the blue sub-pixel 141c, and the red sub-pixel 141a and the blue sub-pixel 141c are arranged in a column direction. The two green sub-pixels 141b are the same in size, and the size of the green sub-pixels 141b is smaller than that of the red sub-pixel 141a and the blue sub-pixel 141c. The two green sub-pixels 141b are arranged in a row direction. The light supplement units 110 adopt the same rhombus structure as the pixel units 140, and the arrangement manner between the light supplement units 110 and the pixel units 140 is the same as that of the pixel units 140 in the display area 100d.

[0109] In some embodiments of the present application, when the pixel units 140 in the display area 100d are large (pixel units ≥ 45 μm X 45 μm), the light supplement units 110 in the light supplement area 100b can be divided into three sub-pixels 141 as the pixel units 140. When the pixel units 140 in the display area 100d are small (pixel units < 45 μm X 45 μm), the light supplement units 110 in the light supplement area 100b can be the same size as one sub-pixel 141 in the pixel units 140.

[0110] In some embodiments of the present application, as shown in FIG. 4, the display panel 100 can be an organic electroluminescence display (OLED) display panel 100. Figure 8 Figure 9 As shown in FIG. 4, the display panel 100 can be an organic electroluminescence display (OLED) display panel 100.

[0111] In some embodiments of the present application, as shown in FIG. 5, the display panel 100 can be an organic electroluminescence display (OLED) display panel 100. Figure 8 Figure 9 As shown in FIG. 5, each sub-pixel 141 in the pixel units 140 includes a second anode 1410, a second cathode 1411 and a second organic light emitting part 1412 arranged 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 independently driven, and the second cathodes 1411 of the sub-pixels 141 can be connected to form a whole surface electrode, so as to reduce the processing cost.

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

[0114] In addition, the second organic light emitting parts 1412 between the sub-pixels 141 are spaced apart by the pixel definition part, and the second organic light emitting parts 1412 can include a hole injection layer, a hole transport layer, an organic light emitting material layer, an electron transport layer, and an electron injection layer which are sequentially stacked, 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 thereto, the second organic light emitting part 1412 can also include only a hole transport layer, a light emitting material layer, and an electron transport layer, or other structures, which can be determined according to actual needs.

[0115] The second cathode 1411 can be formed after the second organic light emitting part 1412 is formed and is in contact with the second organic light emitting part 1412. The first cathode 1222 and the second cathode 1411 can include a low work function material layer containing 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 can include a low work function material layer made of a mixture of Ag and Mg.

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

[0117] In some embodiments of the present application, the first anodes 1220 and the second anodes 1410 are arranged in the same layer, so as 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 setting" refers to a layer structure formed by using the same film forming process to form a film layer for forming a specific pattern, and then using the same mask plate to form the layer structure by one patterning process. That is, one patterning process corresponds to one mask plate (also known as a photomask). According to different specific patterns, one patterning process can include multiple exposure, development or etching processes, and the specific patterns in the formed layer structure can be continuous or discontinuous, and the specific patterns can 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 can also be a separately deposited electrode layer, that is, not arranged in the same layer as the second anode 1410.

[0120] In addition, as shown in Figure 8 or Figure 9 , the first electrode 1120 and the second cathode 1411 are arranged to be spaced apart from each other, that is, the light supplementing unit 110 is located between the second cathode 1411 and the driving back plate 130.

[0121] It is worth mentioning that when the light emitting structure 120 is an LED light emitting piece 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 is arranged to be spaced apart from the second cathode 1411.

[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 can be a separately deposited electrode layer. The first cathode 1222 and the second cathode 1411 are arranged to be spaced apart from each other, and both 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 use an inverter circuit to achieve control of only two electrode signals to achieve control of four electrodes.

[0124] In some embodiments of the present application, as shown in Figure 10 and Figure 11 , this inverter circuit can use a CMOS type inverter circuit, or an NMOS type inverter circuit.

[0125] For example, as shown in Figure 10As shown, when CMOS type inverter circuit is adopted, it includes Input input end, PMOS tube, NMOS tube, Vgh, Vgl and Output output end. The Input input end is connected with the control end of the PMOS tube and the NMOS tube, the first end of the PMOS tube is connected with Vgh to input electric signal to the PMOS tube, the second end of the PMOS tube is connected with the first end of the NMOS tube and the Output output end, the second end of the NMOS tube is connected with Vgl. When high level signal is input to the Input input end, the PMOS tube is closed and the NMOS tube is opened to make the Output output end connected with Vgl, so that the Output outputs low level. When low level signal is input to the Input input end, the PMOS tube is opened and the NMOS tube is closed to make the Output output end connected with Vgh, so that the Output outputs high level.

[0126] Another example is shown in FIG. 6, which is an NMOS type inverter circuit. Figure 11 As shown, when NMOS type inverter circuit is adopted, it includes Input input end, first transistor, second transistor, Vgh, Vgl and Output output end. The Input input end is connected with the control end of the second transistor, the control end and the first end of the first transistor are connected with Vgh, the second end of the first transistor is connected with the Output output end and the first end of the second transistor, the second end of the second transistor is connected with Vgl. When high level signal is input to the Input input end, the second transistor is opened and the Output output end is connected with Vgl, so that the Output outputs low level. When low level signal is input to the Input input end, the second transistor is closed and the Output output end is connected with Vgh, so that the Output outputs high level.

[0127] The first electrode 1120 or the second electrode 1121 is controlled as an electrode signal alone as Input input end signal, and the other is Vgl or Vgh; one of the third electrode 1122 and the fourth electrode 1123 can be the Output output end in the inverter circuit, and the other is Vgh or Vgl. The first electrode 1120 and the second electrode 1121 have an influence on the light supplement effect, so they need to be controlled alone, so that the above four electrodes can be controlled by inputting two electrode signals. The driving signal can be provided by the driving backboard 130.

[0128] It is worth mentioning that a voltage dividing resistor can be added at the Output output end to make the charge amount of the two opposite electrodes different, so that the light conversion particles 1111 and the black particles 1112 move towards different electrodes respectively.

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

[0130] In some embodiments of this application, see Figure 8 or Figure 9 As shown, the display panel 100 also includes a color resist layer 160. The color resist layer 160 is disposed on the side of the encapsulation layer 150 away from the driving backplate 130. The color resist layer 160 includes a color resist area and a cutout area, with the color resist area surrounding the cutout area. Multiple color resist units are provided within the color resist area, each containing multiple color resists. Each color resist corresponds one-to-one with a sub-pixel 141; for example, red color resist 161a corresponds to red sub-pixel 141a, green color resist 161b corresponds to green sub-pixel 141b, and blue color resist 161c corresponds to blue sub-pixel 141c. By setting color resists corresponding to their respective sub-pixels 141, other impurities can be filtered out, ensuring more vibrant emitted colors and improving the display effect of the display area 100d.

[0131] It is understandable that a black matrix (BM) is placed between adjacent color resists to prevent crosstalk between adjacent color resists and ensure display quality.

[0132] In some embodiments of this application, a cutout area is used to expose the supplementary lighting unit 110 and the photosensitive element 200, allowing external light to pass through the cutout area and enter the supplementary lighting unit 110. The orthographic projection of the cutout area on the drive back plate 130 covers the orthographic projections of the supplementary lighting unit 110 and the photosensitive element 200 on the drive back plate 130, ensuring that the visible light reflected by the supplementary lighting unit 110 can act on the object to be photographed over a larger area, improving the supplementary lighting effect and thus improving the photographic effect.

[0133] Example 2

[0134] See Figure 1 to Figure 11 As shown, this second embodiment provides a display device, which includes a display panel 100 as mentioned in embodiment one and a photosensitive element 200 corresponding to the photosensitive area 100a. This embodiment utilizes the supplementary lighting area 100b as in embodiment one, which can effectively provide supplementary lighting for the object to be photographed, increasing the shooting brightness of the photosensitive element 200 and thus improving the imaging effect of the photosensitive element 200. Furthermore, the supplementary lighting unit 110 in this solution can effectively reduce the use of supplementary lighting equipment, improve the convenience of taking pictures, and reduce costs. This display device can be a mobile phone, tablet, etc.

[0135] In the description of the specification, the description of the terms "some embodiments", "exemplarily" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are contained in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the 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 is understood that the above embodiments are exemplary and cannot be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application. Any changes or modifications made in accordance with the claims and specification of the present application shall be within the scope of the present application.

Claims

1. A display panel having a photosensitive area corresponding to a photosensitive element, characterized in that, The display panel also includes a supplementary light area, which surrounds the photosensitive area. A supplementary light unit is provided within the supplementary light area, and the supplementary light unit includes: An electrophoretic structure includes a shell and a dispersion liquid, light-converting particles, and black particles disposed within the shell, wherein the light-converting particles and the black particles are both charged, and the charge of the light-converting particles and the black particles is the same. The electrode structure includes a first electrode and a second electrode that are spaced apart from each other, the first electrode and the second electrode are arranged opposite to each other, and the electrophoresis structure is provided between the first electrode and the second electrode, so that external light can pass through the first electrode and enter the electrophoresis structure; Specifically, when an electrical charge opposite to that of the light-converting particles and the black particles is introduced into the first electrode and the second electrode, and the charge of the first electrode is greater than that of the second electrode, and the charge of the light-converting particles is greater than that of the black particles; or the charge of the first electrode is less than that of the second electrode, and the charge of the light-converting particles is less than that of the black particles, under the action of the electrode structure, the light-converting particles move towards the first electrode, and the black particles move towards the second electrode. When external light shines on the light-converting particles, the light-converting particles can convert the external light into visible light and reflect the visible light back to the outside, so as to provide supplemental lighting for the area where the photosensitive element is located.

2. The display panel according to claim 1, characterized in that, The display panel further includes a light-emitting structure, which is disposed on the side of the second electrode away from the first electrode; The electrophoretic structure also includes color particles disposed within the shell, the color particles being charged, and the charge of the color particles being opposite to the charge of the light-converting particles; The electrode structure further includes a third electrode and a fourth electrode arranged opposite to each other. The third electrode and the fourth electrode are arranged around the outside of the electrophoresis structure along with the first electrode and the second electrode. The third electrode and the fourth electrode have the same electrical charge and are opposite to the electrical charge of the first electrode and the second electrode. When the electrical properties of the first and second electrodes are opposite to those of the color particles, and the electrical properties of the third and fourth electrodes are opposite to those of the light-converting particles, the color particles move toward the first and second electrodes, the light-converting particles move toward the third or fourth electrode, and the black particles move toward the fourth or third electrode. The light emitted by the light-emitting structure can then pass through the color particles and be projected to the outside.

3. The display panel according to claim 2, characterized in that, The supplementary lighting area is provided with multiple supplementary lighting units, and adjacent supplementary lighting units are spaced apart from each other.

4. The display panel according to claim 3, characterized in that, The supplementary lighting area is provided with multiple supplementary lighting pixel units, and each supplementary lighting pixel unit includes a red supplementary lighting unit, a green supplementary lighting unit, and a blue supplementary lighting unit; When the color particles in the red, green, and blue supplementary light units are simultaneously located on the first electrode side, and the light-emitting structure is in a light-emitting state, the supplementary light pixel unit emits white light, which can provide supplementary light to the area where the photosensitive element is located.

5. The display panel according to claim 4, characterized in that, The display panel further includes a driving backplate, which is electrically connected to the second electrode. The light-emitting structure includes an LED light-emitting element, which is disposed on the side of the driving backplate away from the second electrode.

6. The display panel according to claim 5, characterized in that, The display panel also includes a driving backplate; The light-emitting structure is disposed between the supplementary lighting unit and the driving backplate. The light-emitting structure includes a first anode, a first organic light-emitting part and a first cathode. The first organic light-emitting part is disposed between the first anode and the first cathode. The first anode is electrically connected to the driving backplate. The first organic light-emitting part can emit white light to the supplementary 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 also includes a display area, which surrounds the fill light area and contains a plurality of pixel units arranged in an array. 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 projected area of ​​the fill light unit on the driving back panel is an integer multiple of the projected area of ​​the pixel unit on the driving back panel.

8. The display panel according to claim 7, characterized in that, Each pixel unit includes multiple sub-pixels, and adjacent sub-pixels are spaced apart from each other. Each of the sub-pixels includes 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 also spaced apart from each other. The first anode and the second anode are disposed in the same layer, and the first electrode and the second cathode are disposed at an interval.

9. The display panel according to claim 1, characterized in that, The light-converting particles include gelatin and deoxyribonucleic acid.

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

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