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 arranged around the light sensing area. The light supplement area is provided with a light supplement unit. The light supplement unit comprises a first electrode, a second electrode and a light supplement structure. A driving electric field can be formed between the first electrode and the second electrode. External light can pass through the first electrode and be incident on the second electrode. The light supplement structure is arranged between the first electrode and the second electrode. The light supplement structure comprises an outer shell, a dispersion liquid, light conversion particles and black particles which are wrapped in the outer shell. The light conversion particles and the black particles are charged and have opposite electric properties. Under the action of the driving electric field, the light conversion particles and the black particles move towards different electrodes respectively. When the light conversion particles move to the first electrode, the light conversion particles can convert the external light into visible light and reflect the visible light to the outside, so as to realize light supplement for the area where the light sensing element is located. The object photographed by the light sensing element can be supplemented with light.

Description

Technical Field

[0001] This application belongs to the field of display technology, specifically relating to a display panel and display device. Background Technology

[0002] Currently, 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' demands for photography are also increasing.

[0003] In existing technologies, taking photos with a mobile phone requires external lighting, such as a fill light or artificial light source. However, using external lighting is not very convenient for taking photos. Summary of the Invention

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

[0005] The first aspect of this application provides a display panel having a photosensitive area corresponding to a photosensitive element, characterized in that the display panel further includes a supplementary light area surrounding the photosensitive area, and a supplementary light unit is provided within the supplementary light area, the supplementary light unit comprising:

[0006] The first electrode and the second electrode are arranged opposite to each other, and a driving electric field can be formed between the first electrode and the second electrode, and external light can pass through the first electrode and be directed to the second electrode;

[0007] A supplementary light structure is disposed between the first electrode and the second electrode. The supplementary light structure includes a shell and a dispersion liquid, light-converting particles and black particles wrapped in the shell. The light-converting particles and the black particles are both charged and have opposite charges.

[0008] The light-converting particles and the black particles can move toward different electrodes under the action of the driving electric field. When the light-converting particles move to the first electrode, they can convert the external light into visible light and reflect it back to the outside, thereby providing supplementary lighting to the area where the photosensitive element is located. When the black particles move to the first electrode, they can absorb the external light, making the photosensitive element appear black.

[0009] In one exemplary embodiment of this application, a plurality of supplementary lighting units are provided in the supplementary lighting area, and adjacent supplementary lighting units are spaced apart from each other.

[0010] In one exemplary embodiment of this application, the display panel further includes a driving backplate and a display area, the second electrode is electrically connected to the driving backplate, the display area is arranged around the fill light area, and the display area is provided with a plurality of pixel units arranged in an array.

[0011] The projection area of ​​the supplementary light unit on the driving back plate is an integer multiple of the projection area of ​​the pixel unit on the driving back plate.

[0012] In one exemplary embodiment of this application, the projection area of ​​the supplementary light unit on the driving back panel is the same as the projection area of ​​the pixel unit on the driving back panel, and the arrangement of the supplementary light unit and the pixel unit is the same as the arrangement of the pixel unit in the display area.

[0013] In one exemplary embodiment of this application, each pixel unit includes a plurality of sub-pixels, and adjacent sub-pixels are spaced apart from each other;

[0014] Each sub-pixel includes an anode, a cathode, and an organic light-emitting portion disposed between the anode and the cathode. The anodes of adjacent sub-pixels are spaced apart from each other, and the organic light-emitting portions of adjacent sub-pixels are also spaced apart from each other.

[0015] In one exemplary embodiment of this application, the first electrode is the cathode;

[0016] The second electrode is disposed in the same layer as the anode, and the second electrode and the anode are disposed at intervals.

[0017] In one exemplary embodiment of this application, the photoconverting particles include gelatin and deoxyribonucleic acid.

[0018] In one exemplary embodiment of this application, the display panel further includes an encapsulation layer disposed on the side of the cathode away from the driving backplate.

[0019] In one exemplary embodiment of this application, the display panel further includes a color resist layer, which is disposed on the side of the encapsulation layer away from the driving backplate;

[0020] The color resist layer includes multiple color resists arranged in an array, and each color resist corresponds to a sub-pixel.

[0021] A second aspect of this application provides a display device, comprising:

[0022] Photosensitive element; and

[0023] In any of the above-described display panels, the photosensitive element corresponds to the photosensitive area, and the supplementary light unit is arranged around the photosensitive element.

[0024] The display panel and display device of this application have at least the following beneficial effects:

[0025] The periphery of the photosensitive area is equipped with a supplementary lighting unit. By controlling the electrical properties of the first and second electrodes in the supplementary lighting unit, the movement direction of the light-converting particles and black particles in the supplementary lighting structure can be controlled. When the light-converting particles move to one side of the first electrode, they convert ambient light into visible light and reflect it back to the outside, allowing the visible light to illuminate the object being photographed, thus providing supplementary lighting for the object being photographed by the photosensitive element. In other words, this solution can provide supplementary lighting for the object being photographed by the photosensitive element even with ambient light, reducing the need for supplementary lighting equipment and making supplementary lighting for mobile phone photography more convenient. It achieves the supplementary lighting effect without the need for supplementary lighting equipment, effectively improving the photo quality and reducing the cost of using supplementary lighting equipment.

[0026] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.

[0027] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0028] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0029] Figure 1 This illustration shows a schematic diagram of a display panel with a photosensitive area and a supplementary light area provided in Embodiment 1 or Embodiment 2 of this application.

[0030] Figure 2 A cross-sectional structural schematic diagram of the display panel provided in Embodiment 1 or Embodiment 2 of this application is shown.

[0031] Figure 3 The diagram shows a microcapsule structure of the supplementary lighting structure provided in Embodiment 1 or Embodiment 2 of this application.

[0032] Figure 4 The diagram shows a microcup structure for the supplementary lighting structure provided in Embodiment 1 or Embodiment 2 of this application.

[0033] Figure 5This illustration shows a schematic diagram of the structure in which the light-converting particles in the microcapsule structure provided in Embodiment 1 or Embodiment 2 of this application convert external light into visible light and reflect the visible light.

[0034] Figure 6 This illustration shows a schematic diagram of the structure in the microcup structure provided in Embodiment 1 or Embodiment 2 of this application, in which the light-converting particles convert external light into visible light and reflect the visible light.

[0035] Figure 7 This diagram illustrates a microcapsule structure provided in Embodiment 1 or Embodiment 2 of this application, in which part of the supplementary lighting structure is in a black state and the other part is in a supplementary lighting state.

[0036] Figure 8 This diagram illustrates a microcup structure provided in Embodiment 1 or Embodiment 2 of this application, in which part of the supplementary lighting structure is in a black state and the other part is in a supplementary lighting state.

[0037] Figure 9 This illustration shows a schematic diagram of the structure of the display area surrounding the supplementary lighting area provided in Embodiment 1 or Embodiment 2 of this application.

[0038] Figure 10 This document shows a schematic diagram of the structure of a pixel unit with a diamond-shaped display area provided in Embodiment 1 or Embodiment 2 of this application.

[0039] Explanation of reference numerals in the attached figures:

[0040] 100, Display panel; 100a, Photosensitive area; 100b, Fill light area; 100c, Display area; 110, Fill light unit; 111, First electrode; 112, Second electrode; 113, Fill light structure; 1130, Housing; 1131, Light conversion particle; 1132, Black particle; 120, Driving backplate; 130, Pixel unit; 131, Sub-pixel; 131a, Red sub-pixel; 131b, Green sub-pixel; 131c, Blue sub-pixel; 1310, Anode; 1311, Cathode; 1312, Organic light-emitting part; 140, Encapsulation layer; 150, Color resist layer; 151a, Red color resist; 151b, Green color resist; 151c, Blue color resist; 200, Photosensitive element. Detailed Implementation

[0041] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0042] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0043] In this application, unless otherwise expressly specified and limited, the terms "assembly," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0044] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0045] Example 1

[0046] See Figure 1 As shown, this application embodiment provides a display panel 100, which has a photosensitive area 100a corresponding to a photosensitive element 200, which is capable of taking pictures. The display panel 100 also includes a supplementary lighting area 100b surrounding the photosensitive area 100a. The supplementary lighting area 100b can provide supplementary lighting to the object to be photographed when the photosensitive element 200 takes a picture, thereby improving the picture quality, reducing the need for external supplementary lighting equipment, and lowering costs.

[0047] It should be noted that the photosensitive element 200 can be either a front-facing camera or a rear-facing camera. When the photosensitive element 200 is used as a front-facing camera, it is an under-display camera.

[0048] In addition, the width of the fill light area 100b is 5 mm to 10 mm, for example, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm or 10 mm. The fill light area 100b with a width of 5 mm to 10 mm can provide fill light to the subject being photographed, and also reduce the space occupied by the fill light area 100b, that is: to ensure space optimization while providing fill light.

[0049] When the photosensitive element 200 is a front-facing camera, it can reduce the area occupied by the display area 100c, ensure the aperture ratio of the display panel 100, and ensure the display image of the display panel 100.

[0050] It is worth mentioning that the supplementary lighting area 100b is arranged around the outer side of the photosensitive area 100a. The cross-section of the supplementary lighting area 100b can be circular, square, or other shapes.

[0051] In some embodiments of this application, see Figure 1 As shown, the cross-section of the supplementary lighting area 100b is annular, and a supplementary lighting unit 110 is provided in the supplementary lighting area 100b. This supplementary lighting unit 110 is used to supplement the light on the object to be photographed, thereby improving the photographic effect of the photosensitive element 200.

[0052] See Figures 2 to 8 As shown, the supplementary light unit 110 can be an electronic ink structure, which includes a first electrode 111, a second electrode 112 and a supplementary light structure 113.

[0053] In some embodiments of this application, the first electrode 111 and the second electrode 112 are arranged opposite to each other. The first electrode 111 and the second electrode 112 can be connected to different driving signals, so that the first electrode 111 and the second electrode 112 have different electrical properties, thereby forming a driving electric field between the first electrode 111 and the second electrode 112.

[0054] It should be noted that external light can pass through the first electrode 111 and reach the second electrode 112. That is, the first electrode 111 is located closer to the outside, and the first electrode 111 is a transparent electrode so that external light can pass through the first electrode 111 and enter the second electrode 112. The second electrode 112 can be a transparent electrode or an opaque electrode, and no specific limitation is made here.

[0055] In some embodiments of this application, see Figure 3 and Figure 4 As shown, the supplementary lighting structure 113 is disposed between the first electrode 111 and the second electrode 112. The supplementary lighting structure 113 can be a microcapsule structure or a microcup structure, and can be designed according to different embodiments.

[0056] In some embodiments of this application, see Figure 3As shown, the supplementary lighting structure 113 includes a shell 1130 and a dispersion liquid, light-converting particles 1131, and black particles 1132 enclosed within the shell 1130. The cross-section of the shell 1130 can be circular, square, or trapezoidal, etc. The light-converting particles 1131 and black particles 1132 are mixed in the dispersion liquid, and both the light-converting particles 1131 and black particles 1132 are charged, with opposite charges.

[0057] In some embodiments of this application, the light conversion particle 1131 is a light conversion silica gel ball. The light conversion particle 1131 includes a polymer and a biomass aerogel ball made of gelatin (GE) and deoxyribonucleic acid (DNA). The polymer is used to coat or modify the biomass aerogel ball.

[0058] 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.

[0059] Furthermore, the charge of the photoconversion particles 1131 can be achieved by polymer coating or modification of biomass aerogel spheres, where the charge can be applied to the outer edge of the polymer during surface modification.

[0060] Understandably, since both the light-converting particles 1131 and the black particles 1132 are charged, they can move within the outer casing 1130 under the influence of the driving electric field formed by the first electrode 111 and the second electrode 112. Furthermore, because the light-converting particles 1131 and the black particles 1132 have opposite charges, they move in opposite directions, moving towards different electrodes respectively.

[0061] For example, see Figure 5 and Figure 6As shown, the light-converting particles 1131 are negatively charged, and the black particles 1132 are positively charged. The first electrode 111 is positively charged, and the second electrode 112 is negatively charged. Based on the principle of like charges repelling and unlike charges attracting, the light-converting particles 1131 move towards the first electrode 111, and the black particles 1132 move towards the second electrode 112. This results in the light-converting particles 1131 attaching to the first electrode 111 and the black particles 1132 attaching to the second electrode 112, with the light-converting particles 1131 being closer to the outside than the black particles 1132. When external light enters from the first electrode 111, the light-converting particles 1131 convert the external light into visible light and reflect it back, thus providing supplementary lighting for the object being photographed. In other words, when the photosensitive element 200 takes a picture, the light-converting particles 1131 can use external light to supplement the lighting of the object being photographed, improving the photographic effect, reducing the need for supplementary lighting equipment, increasing the convenience of photography, and reducing costs.

[0062] It should be noted that the light conversion particle 1131 uses external light to supplement the light on the object being photographed. Therefore, the stronger the external light, the greater the supplementary light intensity, and the better the shooting effect of the image sensor 200.

[0063] For another example, see Figure 3 and Figure 4 As shown, the light-converting particles 1131 are negatively charged, and the black particles 1132 are positively charged. The first electrode 111 is negatively charged, and the second electrode 112 is positively charged. Based on the principle of like charges repelling and unlike charges attracting, the light-converting particles 1131 move towards the second electrode 112, and the black particles 1132 move towards the first electrode 111. This results in the light-converting particles 1131 attaching to the second electrode 112, and the black particles 1132 attaching to the first electrode 111. When external light passes through the first electrode 111 and enters the supplementary lighting structure 113, the black particles 1132 absorb the light, and the supplementary lighting structure 113 becomes black and has no supplementary lighting effect.

[0064] Understandably, the lighting structure 113 can be selected to be in a lighting state or a dark state depending on the condition of the object to be photographed, and the user can automatically select the desired state.

[0065] It is worth mentioning that the light-converting particles 1131 can also be positively charged, and the black particles 1132 can also be negatively charged. The electrical properties of the two can be designed according to different embodiments, as long as the electrical properties of the two are different.

[0066] Furthermore, black particle 1132 can be a black matrix (BM).

[0067] In some embodiments of this application, both the light-converting particles 1131 and the black particles 1132 are nanometer-sized. Furthermore, both the light-converting particles 1131 and the black particles 1132 have a spherical structure to ensure both light conversion and shading effects.

[0068] In some embodiments of this application, see Figure 9 and Figure 10 As shown, the supplementary lighting area 100b is provided with multiple supplementary lighting units 110, which are spaced apart from each other. By using multiple supplementary lighting units 110, more ambient light can be converted into visible light and reflected back to the outside world to provide supplementary lighting for the object to be photographed, thereby improving the supplementary lighting effect and thus improving the photographic effect.

[0069] In some other embodiments of this application, a ring-shaped supplementary lighting unit 110 is provided in the supplementary lighting area 100b. The first electrode 111 and the second electrode 112 in this supplementary lighting unit 110 are both ring structures. By controlling the electrical properties of the first electrode 111 and the second electrode 112, the movement direction of the light conversion particles 1131 and the black particles 1132 is controlled, thereby achieving a black state or a supplementary lighting state.

[0070] It is understandable that when there is only one supplementary lighting unit 110 in the supplementary lighting area 100b, the supplementary lighting unit 110 can be designed into different shapes according to the design shape of the supplementary lighting area 100b. For example, the cross-section of the supplementary lighting area 100b is square, the cross-section of the supplementary lighting unit 110 is square, and the supplementary lighting unit 110 is arranged around the photosensitive area 100a.

[0071] It is worth mentioning that when the supplementary lighting area 100b is provided with multiple supplementary lighting units 110, the first electrode 111 and the second electrode 112 between the multiple supplementary lighting units 110 can be connected to each other or spaced apart from each other. That is, they can share the same first electrode 111 and the same second electrode 112, or each supplementary lighting unit 110 can be designed with a separate first electrode 111 and a separate second electrode 112.

[0072] It is understandable that when multiple supplementary lighting units 110 use the same first electrode 111 and second electrode 112, they can simultaneously control multiple supplementary lighting units 110, reduce the input of driving signals, and reduce costs.

[0073] Furthermore, when each supplementary lighting unit 110 employs a separate first electrode 111 and a second electrode 112, it can selectively supplement light according to the required conditions, perform intelligent supplementary lighting, and further improve the photography effect.

[0074] That is, see Figure 7 and Figure 8As shown, multiple supplementary lighting units 110 can be combined with pattern algorithms to control the electrical properties of the first electrode 111 and the second electrode 112, thereby controlling some of the supplementary lighting units 110 to be in a supplementary lighting state and controlling the other part to be in a dark state. Based on the situation of the object to be photographed, the required supplementary lighting conditions are intelligently selected to further improve the photographic effect.

[0075] In some embodiments of this application, see Figure 2 As shown, the display panel 100 also includes a driving backplate 120. The driving backplate 120 may include a substrate and circuit structures such as thin film transistors and wiring disposed on the substrate for driving the organic light-emitting part 1312 mentioned later to emit light, which will not be described in detail here.

[0076] It is worth mentioning that the driving backplate 120 is electrically connected to the second electrode 112 in the above-mentioned supplementary light unit 110. It can change the electrical properties of the second electrode 112 to change the direction of the driving electric field, thereby controlling the movement direction of the black particles 1132 and the light conversion particles 1131 in the supplementary light structure 113.

[0077] In some embodiments of this application, see Figure 1 , Figure 9 and Figure 10 As shown, the display panel 100 also includes a display area 100c, which is used to display the screen. The display area 100c may be arranged around the fill light area 100b. The display area 100c has a plurality of pixel units 130 arranged in an array. Each pixel unit 130 is spaced apart from each other, and each pixel unit 130 may include a plurality of sub-pixels 131.

[0078] For example, see Figure 9 and Figure 10 As shown, each pixel unit 130 includes a red sub-pixel 131a, a green sub-pixel 131b, and a blue sub-pixel 131c. The red sub-pixel 131a can emit red light, the green sub-pixel 131b can emit green light, and the blue sub-pixel 131c can emit blue light.

[0079] In some embodiments of this application, the projected area of ​​the supplementary light unit 110 on the driving back plate 120 can be an integer multiple of the projected area of ​​the pixel unit 130 on the driving back plate 120.

[0080] For example, the projected area of ​​the supplementary lighting unit 110 on the driving backplate 120 is twice the projected area of ​​the pixel unit 130 on the driving backplate 120, that is, the size of the supplementary lighting unit 110 is the same as the size of the pixel unit 130. This ensures that more supplementary lighting units 110 can be arranged in the supplementary lighting area 100b.

[0081] In another example, the projected area of ​​the supplementary light unit 110 on the driving back plate 120 is twice the projected area of ​​the pixel unit 130 on the driving back plate 120. That is, the size of the supplementary light unit 110 is larger than the size of the pixel unit 130. In the same size supplementary light area 100b, the number of this supplementary light unit 110 is less than the number of supplementary light units 110 of the same size as the pixel unit 130.

[0082] Understandably, the smaller the fill light unit 110 is, the more precise the fill light effect of the fill light area 100b will be, resulting in better fill light for the subject being photographed and improved photo quality.

[0083] In some embodiments of this application, the projected area of ​​the supplementary lighting unit 110 on the driving backplate 120 is the same as the projected area of ​​the pixel unit 130 on the driving backplate 120. Furthermore, the arrangement of the supplementary lighting unit 110 and the pixel unit 130 is the same as the arrangement of the pixel unit 130 in the display area 100c, ensuring that the arrangement in the supplementary lighting area 100b is the same as that in the display area 100c. This allows for a reasonable layout of the supplementary lighting unit 110 in the supplementary lighting area 100b, preventing the supplementary lighting unit 110 from occupying too much space in the display area 100c, ensuring the aperture ratio in the display area 100c, and thus guaranteeing the display effect.

[0084] For example, see Figure 9 As shown, the pixel unit 130 in the display area 100c is elongated, meaning that the sub-pixels 131 are arranged sequentially in the row direction. Correspondingly, the supplementary light unit 110 is also elongated, and the arrangement of the supplementary light unit 110 and the pixel unit 130 is the same as the arrangement of the pixel unit 130 in the display area 100c.

[0085] For another example, see Figure 10 As shown, the cross-sectional shape of pixel unit 130 in display area 100c is rhomboid, and the cross-sectional shape of sub-pixel 131 is also rhomboid. Pixel unit 130 includes a red sub-pixel 131a, a blue sub-pixel 131c, and two green sub-pixels 131b. The size of red sub-pixel 131a is the same as that of blue sub-pixel 131c, and they are arranged sequentially in the column direction. The two green sub-pixels 131b are the same size, but smaller than both red and blue sub-pixels 131a and 131c, and are arranged sequentially in the row direction. The cross-section of supplementary lighting unit 110 adopts the same rhomboid structure as pixel unit 130, and the arrangement of supplementary lighting unit 110 with pixel unit 130 is the same as the arrangement of pixel unit 130 in display area 100c.

[0086] In some embodiments of this application, see Figure 2 As shown, the display panel 100 can be an organic light-emitting diode (OLED) display panel 100.

[0087] In some embodiments of this application, see Figure 2 As shown, each sub-pixel 131 in pixel unit 130 includes an anode 1310, a cathode 1311, and an organic light-emitting part 1312 disposed between the anode 1310 and the cathode 1311.

[0088] It should be understood that the anodes 1310 of each sub-pixel 131 are spaced apart from each other, which enables each sub-pixel 131 to be driven independently. The cathodes 1311 of each sub-pixel 131 can be connected to each other to form a whole surface electrode, thereby reducing processing costs.

[0089] The anode 1310 can be made of indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), or indium oxide (In2O3). The anode 1310 is electrically connected to a thin-film transistor on the driving backplane 120 to drive the organic light-emitting part 1312 to emit light.

[0090] Furthermore, the organic light-emitting portions 1312 between each sub-pixel 131 are separated by pixel definition portions. The organic light-emitting portion 1312 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 sequentially. The hole injection layer is in contact with the anode 1310, and the electron injection layer is in contact with the cathode 1311. However, it is not limited to this. The organic light-emitting portion 1312 may also include only a hole transport layer, a light-emitting material layer, and an electron transport layer, or other structures, depending on actual needs.

[0091] The cathode 1311 may be formed after the organic light-emitting portion 1312 is formed and may be in contact with the organic light-emitting portion 1312. This cathode 1311 may include a low work function material layer comprising Li, Ca, LiF / Ca, LiF / Al, Al, Mg, Ag, Pt, Pd, Ni, Au, Nd, Ir, Cr, BaF2, Ba, their compounds or mixtures thereof. For example, the cathode 1311 may include a low work function material layer made of a mixture of Ag and Mg.

[0092] It should be understood that the organic light-emitting part 1312 corresponding to the red sub-pixel 131a, green sub-pixel 131b, and blue sub-pixel 131c emits different colors. For example, red sub-pixel 131a means that the organic light-emitting part 1312 emits red light, green sub-pixel 131b means that the organic light-emitting part 1312 emits green light, and blue sub-pixel 131c means that the organic light-emitting part 1312 emits blue light.

[0093] In some embodiments of this application, see Figure 2 As shown, the first electrode 111 is a cathode 1311, and the second electrode 112 is disposed on the same layer as the anode 1310 of the sub-pixel 131 in the display area 100c, so as to save the manufacturing cost of the first electrode 111 and the second electrode 112 and reduce the production cost.

[0094] It should be understood that, in this application, "same-layer configuration" refers to a layer structure formed using the same film deposition process to create a film layer for forming a specific pattern, and then using the same mask to form a single patterning process. That is, one patterning process corresponds to one 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 can be continuous or discontinuous. 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.

[0095] Furthermore, when the anode 1310 and the second electrode 112 are arranged in the same layer, the anode 1310 and the second electrode 112 are spaced apart from each other to avoid mutual interference between the anode 1310 and the second electrode 112, which would affect the display or supplementary lighting effect.

[0096] In other embodiments of this application, the first electrode 111 may also be disposed on the side of the cathode 1311 near the drive back plate 120, that is, the first electrode 111 does not use the cathode 1311 and deposits an electrode layer separately; the second electrode 112 may also deposit an electrode layer separately, that is, the second electrode 112 is not disposed on the same layer as the anode 1310.

[0097] In some embodiments of this application, see Figure 2 As shown, the display panel 100 also includes an encapsulation layer 140, which is located on the side of the cathode 1311 away from the driving substrate. It can isolate external water and oxygen to avoid affecting the working state of the organic light-emitting part 1312 and the compensation unit.

[0098] In some embodiments of this application, see Figure 2As shown, the display panel 100 also includes a color resist layer 150. The color resist layer 150 is disposed on the side of the encapsulation layer 140 away from the driving backplate 120. The color resist layer 150 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 131; that is, red color resist 151a corresponds to red sub-pixel 131a, green color resist 151b corresponds to green sub-pixel 131b, and blue color resist 151c corresponds to blue sub-pixel 131c. By setting color resists corresponding to their respective sub-pixels 131, other impurities can be filtered out, ensuring more vibrant emitted colors and improving the display effect of the display area 100c.

[0099] 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.

[0100] 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 120 covers the orthographic projections of the supplementary lighting unit 110 and the photosensitive element 200 on the drive back plate 120, 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.

[0101] Example 2

[0102] See Figure 2 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.

[0103] In the description of this specification, references to terms such as "some embodiments," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0104] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application. Therefore, any changes or modifications made in accordance with the claims and description of this application should fall within the scope of this patent application.

Claims

1. A display panel having a photosensitive area corresponding to a photosensitive element, characterized in that, The display panel further includes a supplementary light area surrounding the photosensitive area, and the supplementary light area is provided with a supplementary light unit, the supplementary light unit comprising: The first electrode and the second electrode are arranged opposite to each other, and a driving electric field can be formed between the first electrode and the second electrode, and external light can pass through the first electrode and be directed to the second electrode; A supplementary light structure is disposed between the first electrode and the second electrode. The supplementary light structure includes a shell and a dispersion liquid, light-converting particles and black particles wrapped in the shell. The light-converting particles and the black particles are both charged and have opposite charges. The light-converting particles and the black particles can move toward different electrodes under the action of the driving electric field. When the light-converting particles move to the first electrode, they can convert the external light into visible light and reflect it back to the outside, thereby providing supplementary lighting to the area where the photosensitive element is located. When the black particles move to the first electrode, they can absorb the external light, making the photosensitive element appear black.

2. The display panel according to claim 1, 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.

3. The display panel according to claim 2, characterized in that, The display panel further includes a driving backplate and a display area. The second electrode is electrically connected to the driving backplate. The display area is arranged around the fill light area and has multiple pixel units arranged in an array within it. The projection area of ​​the supplementary light unit on the driving back plate is an integer multiple of the projection area of ​​the pixel unit on the driving back plate.

4. The display panel according to claim 3, characterized in that, The projection area of ​​the fill light unit on the driving back panel is the same as the projection area of ​​the pixel unit on the driving back panel, and the arrangement of the fill light unit and the pixel unit is the same as the arrangement of the pixel unit in the display area.

5. The display panel according to claim 3, characterized in that, Each pixel unit includes multiple sub-pixels, and adjacent sub-pixels are spaced apart from each other. Each sub-pixel includes an anode, a cathode, and an organic light-emitting portion disposed between the anode and the cathode. The anodes of adjacent sub-pixels are spaced apart from each other, and the organic light-emitting portions of adjacent sub-pixels are also spaced apart from each other.

6. The display panel according to claim 5, characterized in that, The first electrode is the cathode; The second electrode is disposed in the same layer as the anode, and the second electrode and the anode are disposed at intervals.

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

8. The display panel according to claim 5, characterized in that, The display panel further includes an encapsulation layer disposed on the side of the cathode away from the driving backplate.

9. The display panel according to claim 8, characterized in that, The display panel further includes a color resist layer, which is disposed on the side of the encapsulation layer away from the driving backplate; The color resist layer includes multiple color resists arranged in an array, and each color resist corresponds to a sub-pixel.

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.

Images