Display panel and display device

Abstract

The invention relates to a display panel and a display device, the display panel comprises a light-transmitting substrate, a light-emitting element is located on one side of the light-transmitting substrate, an array layer is located on one side, away from the light-emitting element, of the light-transmitting substrate, and the array layer comprises a pixel driving circuit; the light-emitting device layer is located on the side, away from the light-transmitting substrate, of the array layer, the light-emitting device layer comprises a light-emitting device, and the light-emitting device is electrically connected with the pixel driving circuit; the light-sensitive device is electrically connected with the pixel driving circuit and the light-emitting device, the light-sensitive device is photoelectrically coupled with the light-emitting element, and the light-sensitive device is used for converting light emitted by the light-emitting element into an electric signal so as to connect or disconnect the pixel driving circuit and the light-emitting device. In conclusion, according to the display panel in the embodiment, the spliced screen formed by splicing has a better display effect.

Description

Technical Field

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

[0002] As display technology continues to mature, consumers are demanding higher specifications for display panels, requiring manufacturers to produce larger sizes. Related technologies typically involve splicing multiple smaller display panels together to create ultra-large video walls, thus meeting consumer demand for large display panels.

[0003] In related technologies, the switching devices on the wires between the light-emitting devices and the pixel driving circuits of the display panel are electrically connected to a driving circuit board on the side of the substrate away from the light-emitting devices via control wires. These control wires are partially located on the peripheral wall of the display panel substrate. When multiple display panels are spliced ​​together, the control wires on the peripheral wall of the substrate of any two adjacent display panels will separate that display panel from the adjacent display panel, increasing the gap between adjacent display panels and affecting the display effect of the spliced ​​screen, resulting in a poor display quality. Summary of the Invention

[0004] Therefore, it is necessary to propose a display panel and display device to address the current problem of poor display effect of splicing screens.

[0005] A display panel, comprising:

[0006] Transparent substrate;

[0007] A light-emitting element is located on one side of the light-transmitting substrate;

[0008] An array layer is located on the side of the light-transmitting substrate opposite to the light-emitting element, and the array layer includes a pixel driving circuit.

[0009] A light-emitting device layer is located on the side of the array layer opposite to the light-transmitting substrate. The light-emitting device layer includes a light-emitting device, which is electrically connected to the pixel driving circuit.

[0010] A photosensitive device is electrically connected to the pixel driving circuit and the light-emitting device. The photosensitive device is photoelectrically coupled to the light-emitting element. The photosensitive device is used to convert the light emitted by the light-emitting element into an electrical signal to conduct or disconnect the pixel driving circuit and the light-emitting device.

[0011] This application also proposes a display device including the aforementioned display panel.

[0012] In this embodiment, the display panel and display device electrically connect the pixel driving circuit and the light-emitting device using a photosensitive device. The light-emitting element is positioned on the side of the light-transmitting substrate away from the pixel driving circuit. The photosensitive device and the light-emitting element are optocoupled, allowing light emitted by the light-emitting element to pass through the light-transmitting substrate and reach the photosensitive device. The light is then received by the photosensitive device and converted into an electrical signal, used to either turn the pixel driving circuit and the light-emitting device on or off, thereby controlling the light emission of the light-emitting device. Specifically, when the photosensitive device turns the pixel driving circuit and the light-emitting device on, the light-emitting device emits light under the drive of the pixel driving circuit. When the photosensitive device turns the pixel driving circuit and the light-emitting device off, the pixel driving circuit no longer drives the light-emitting device, and the light-emitting device stops emitting light.

[0013] It is important to emphasize that since the photosensitive device and the light-emitting element are connected by photoelectric coupling rather than by electrical connection through control wires, the number of wires on the periphery of the light-transmitting substrate can be reduced. This avoids the large splicing gaps that would result when the display panel is spliced ​​with adjacent display panels due to the presence of many wires on the periphery of the light-transmitting substrate. As a result, the splicing gaps between two adjacent display panels are reduced, improving the display effect of the spliced ​​screen formed by splicing multiple display panels.

[0014] In summary, the display panel and display device in this embodiment, when spliced ​​together, form a splicing screen with superior display performance. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments or exemplary embodiments of this application, the drawings used in the description of the embodiments or exemplary embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a display panel in one embodiment of this application.

[0017] Figure 2 for Figure 1 The AA section view of the display panel is shown.

[0018] Figure 3 This is a schematic diagram of the structure of a display panel in one embodiment of this application.

[0019] Figure 4 for Figure 3 The BB-direction cross-sectional view of the display panel is shown.

[0020] Figure 5This is a schematic diagram of the structure of a display panel in one embodiment of this application.

[0021] Figure 6 for Figure 5 The C-axis cross-sectional view of the display panel shown.

[0022] Figure 7 For including Figure 1 , Figure 3 and Figure 5 A schematic diagram of the structure of a display device with any of the display panels.

[0023] Figure 8 For multiple Figure 7 The splicing screen is formed by splicing together the display devices shown.

[0024] Figure label:

[0025] Video wall 1;

[0026] Display device 10;

[0027] Display panel 100;

[0028] Light-transmitting substrate 110, light-transmitting part 111, light-shielding part 112, connecting part 113;

[0029] Light-emitting element 120, connecting terminal 121;

[0030] Array layer 130, pixel driving circuit 131;

[0031] Light-emitting device layer 140, light-emitting device 141;

[0032] Photosensitive device 150, first terminal 151, second terminal 152;

[0033] First encapsulation layer 160;

[0034] Second encapsulation layer 170. Detailed Implementation

[0035] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0036] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0037] Furthermore, where the terms "first" and "second" appear, these terms are 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 with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0040] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0041] Please see Figure 1 and Figure 2 , Figure 1 This diagram shows a top view of a display panel 100 according to an embodiment of this application. An embodiment of this application provides a display panel 100. The display panel 100 includes: a light-transmitting substrate 110, a light-emitting element 120, an array layer 130, a light-emitting device layer 140, and a photosensitive device 150. The light-emitting element 120 is located on one side of the light-transmitting substrate 110. The array layer 130 is located on the side of the light-transmitting substrate 110 opposite to the light-emitting element 120, and the array layer 130 includes a pixel driving circuit 131. The light-emitting device layer 140 is located on the side of the array layer 130 opposite to the light-transmitting substrate 110, and the light-emitting device layer 140 includes a light-emitting device 141, which is electrically connected to the pixel driving circuit 131. The photosensitive device 150 is electrically connected to the pixel driving circuit 131 and the light-emitting device 141. The photosensitive device 150 is photoelectrically coupled to the light-emitting element 120. The photosensitive device 150 is used to convert the light emitted by the light-emitting element 120 into an electrical signal to conduct or disconnect the pixel driving circuit 131 and the light-emitting device 141.

[0042] In this embodiment, the display panel 100 uses a photosensitive device 150 to electrically connect the pixel driving circuit 131 and the light-emitting device 141. The light-emitting element 120 is disposed on the side of the light-transmitting substrate 110 away from the pixel driving circuit 131. The photosensitive device 150 and the light-emitting element 120 are optocoupled so that the light emitted by the light-emitting element 120 passes through the light-transmitting substrate 110 and is received by the photosensitive device 150. The photosensitive device 150 converts the light emitted by the light-emitting element 120 into an electrical signal, which is used to turn on or off the pixel driving circuit 131 and the light-emitting device 141, thereby controlling the light emission of the light-emitting device 141. Specifically, when the photosensitive device 150 turns on the pixel driving circuit 131 and the light-emitting device 141, the light-emitting device 141 emits light under the drive of the pixel driving circuit 131. When the photosensitive device 150 turns off the pixel driving circuit 131 and the light-emitting device 141, the pixel driving circuit 131 no longer drives the light-emitting device 141, and the light-emitting device 141 stops emitting light.

[0043] It should be emphasized that since the photosensitive device 150 and the light-emitting element 120 are connected by photoelectric coupling rather than by electrical connection through control wires, the number of wires on the peripheral wall of the light-transmitting substrate 110 can be reduced. This avoids the large splicing gaps that would occur when the display panel 100 is spliced ​​with adjacent display panels 100 due to the presence of many wires on the peripheral wall of the light-transmitting substrate 110. As a result, the splicing gaps between two adjacent display panels 100 are reduced, improving the display effect of the splicing screen 1 formed by splicing multiple display panels 100.

[0044] In summary, the display panel 100 in this embodiment, when spliced ​​together, forms a splicing screen 1 with superior display performance.

[0045] Please see Figure 1 and Figure 2 In some embodiments, the first terminal 151 of the photosensitive device 150 is electrically connected to the pixel driving circuit 131, and the second terminal 152 of the photosensitive device 150 is electrically connected to the light-emitting device 141. When the photosensitive device 150 receives light emitted by the light-emitting element 120, the first terminal 151 and the second terminal 152 are electrically connected or disconnected.

[0046] Optionally, one of the first terminal 151 and the second terminal 152 is an input terminal of the photosensitive device 150; the other of the first terminal 151 and the second terminal 152 is an output terminal of the photosensitive device 150.

[0047] In this embodiment, the display panel 100 is electrically connected to the first terminal 151 of the photosensitive device 150 via the pixel driving circuit 131, and to the second terminal 152 of the photosensitive device 150 via the light emitted by the light-emitting element 120. Therefore, when the photosensitive device 150 is controlled by the light emitted by the light-emitting element 120, causing the first terminal 151 to connect to the second terminal 152, the pixel driving circuit 131 and the light-emitting device 141 will be switched on by the photosensitive device 150, allowing the light-emitting device 141 to emit light under the drive of the pixel driving circuit 131. When the photosensitive device 150 is controlled by the light emitted by the light-emitting element 120, causing the first terminal 151 to disconnect from the second terminal 152, the pixel driving circuit 131 and the light-emitting device 141 will disconnect under the action of the photosensitive device 150, and the pixel driving circuit 131 will stop driving the light-emitting device 141.

[0048] Please see Figure 1 and Figure 2In some embodiments, the light-emitting element 120, the pixel driving circuit 131 and the photosensitive device 150 are all multiple, the multiple light-emitting elements 120 are correspondingly arranged with the multiple pixel driving circuits 131, the multiple photosensitive devices 150 are correspondingly arranged with the multiple light-emitting elements 120, and the photosensitive device 150 is electrically connected to the corresponding pixel driving circuit 131 and the light-emitting device 141.

[0049] In this embodiment, the display panel 100 is configured such that multiple light-emitting elements 120 are correspondingly arranged with multiple pixel driving circuits 131, and multiple photosensitive devices 150 are correspondingly arranged with multiple light-emitting elements 120. This allows each pixel driving circuit 131 to be electrically connected to a light-emitting device 141 through a corresponding photosensitive device 150. Furthermore, because the light-emitting elements 120 and photosensitive devices 150 are correspondingly arranged, the photosensitive device 150 corresponding to each pixel driving circuit 131 can, under the influence of the light emitted by the corresponding light-emitting element 120, turn the pixel driving circuit 131 and the light-emitting device 141 on or off.

[0050] In some embodiments, the light-emitting device 141 includes a plurality of light-emitting devices 141, and the plurality of light-emitting devices 141 are correspondingly arranged with a plurality of pixel driving circuits 131.

[0051] Please see Figure 1 and Figure 2 In some embodiments, the light-transmitting substrate 110 has a plurality of light-transmitting portions 111 and a plurality of light-shielding portions 112, with the plurality of light-transmitting portions 111 and the plurality of light-shielding portions 112 correspondingly disposed, and the light-shielding portions 112 surrounding the corresponding light-transmitting portion 111. A plurality of light-emitting elements 120 are correspondingly disposed with the plurality of light-transmitting portions 111, with the light-emitting elements 120 located on the side of the corresponding light-transmitting portion 111 facing away from the array layer 130, and the photosensitive device 150 located on the side of the corresponding light-transmitting portion 111 close to the array layer 130.

[0052] In this embodiment, the display panel 100 has a corresponding light-emitting element 120 mounted on the side of each light-transmitting portion 111 facing away from the array layer 130, and a corresponding photosensitive device 150 mounted on the side of each light-transmitting portion 111 close to the array layer 130. This allows the light emitted by each light-emitting element 120 to pass through the light-transmitting portion 111 between the light-emitting element 120 and the corresponding photosensitive device 150, and be received by the corresponding photosensitive device 150. By providing a light-shielding portion 112 around the outer periphery of each light-transmitting portion 111, the light emitted by each light-emitting element 120, after entering the light-transmitting portion 111 between the light-emitting element 120 and the corresponding photosensitive device 150, will not be directed to the light-transmitting portion 111 between other light-emitting elements 120 and their corresponding photosensitive devices 150. Thus, it can be ensured that the light emitted by each light-emitting element 120 can only control the corresponding photosensitive device 150.

[0053] Optionally, laser engraving technology is used to process the light-transmitting substrate 110 to process multiple annular diffuse reflection layers within the light-transmitting substrate 110, so that each annular diffuse reflection layer constitutes a light-shielding part 112, thereby forming multiple light-shielding parts 112.

[0054] Please see Figure 1 and Figure 2 In some embodiments, the light-transmitting substrate 110 includes a connecting portion 113, which is located between two adjacent light-shielding portions 112 and connects the two adjacent light-shielding portions 112; the orthographic projection of the pixel driving circuit 131 on the plane of the light-transmitting substrate 110 is located within the orthographic projection of the connecting portion 113 on the plane of the light-transmitting substrate 110. It should be further noted that the plane of the light-transmitting substrate 110 refers to the side surface of the light-transmitting substrate 110 that faces away from the array layer 130.

[0055] In this embodiment, the display panel 100 has a connecting portion 113 located between two adjacent light-shielding portions 112, connecting the two adjacent light-shielding portions 112. The orthographic projection of the pixel driving circuit 131 on the plane of the light-transmitting substrate 110 is located within the orthographic projection of the connecting portion 113 on the plane of the light-transmitting substrate 110. In this way, the pixel driving circuit 131 and the photosensitive device 150 can be staggered, avoiding overlap between the pixel driving circuit 131 and the photosensitive device 150. This reduces the blocking effect of the pixel driving circuit 131 on the portion of the light emitted by the light-emitting element 120 that is directed toward the photosensitive device 150, ensuring that most of the light emitted by the light-emitting element 120 toward the photosensitive device 150 is received by the photosensitive device 150.

[0056] Please see Figure 1 and Figure 2 In some embodiments, the orthographic projection of the light-emitting element 120 onto the plane of the light-transmitting substrate 110 is located within the orthographic projection of the light-transmitting portion 111 onto the plane of the light-transmitting substrate 110.

[0057] In this embodiment, the display panel 100 is configured such that the orthographic projection of the light-emitting element 120 on the plane of the light-transmitting substrate 110 is located within the orthographic projection of the light-transmitting portion 111 on the plane of the light-transmitting substrate 110. This ensures that most of the light emitted by the light-emitting element 120 enters the light-transmitting portion 111 from the side of the light-transmitting portion 111 closest to the light-emitting element 120 and is directed toward the photosensitive device 150.

[0058] Optionally, the outline of the orthographic projection of the light-transmitting portion 111 onto the plane of the light-transmitting substrate 110 surrounds the orthographic projection of the light-emitting element 120 onto the plane of the light-transmitting substrate 110.

[0059] Optionally, the outline of the orthographic projection of the light-transmitting portion 111 onto the plane of the light-transmitting substrate 110 coincides with the outline of the orthographic projection of the light-emitting element 120 onto the plane of the light-transmitting substrate 110.

[0060] By setting the outline of the orthogonal projection of the light-transmitting portion 111 onto the plane of the light-transmitting substrate 110 to coincide with the outline of the orthogonal projection of the light-emitting element 120 onto the plane of the light-transmitting substrate 110, the light-emitting element 120 can block the light in the light-transmitting portion 111, preventing the light in the light-transmitting portion 111 from being emitted from the side of the light-transmitting portion 111 closest to the light-emitting element 120.

[0061] Please see Figure 1 and Figure 2 In some embodiments, the orthographic projection of the photosensitive device 150 onto the plane of the light-transmitting substrate 110 is located within the orthographic projection of the light-transmitting portion 111 onto the plane of the light-transmitting substrate 110.

[0062] In this embodiment, the display panel 100 is configured such that the orthographic projection of the photosensitive device 150 onto the plane of the light-transmitting substrate 110 is located within the orthographic projection of the light-transmitting portion 111 onto the plane of the light-transmitting substrate 110. This ensures that most of the light emitted by the light-emitting element 120 is received by the photosensitive device 150 after entering the light-transmitting portion 111, thereby improving the utilization efficiency of the light emitted by the light-emitting element 120.

[0063] Optionally, the outline of the orthographic projection of the light-transmitting portion 111 onto the plane of the light-transmitting substrate 110 surrounds the orthographic projection of the photosensitive device 150 onto the plane of the light-transmitting substrate 110.

[0064] Optionally, the outline of the orthographic projection of the light-transmitting portion 111 onto the plane of the light-transmitting substrate 110 coincides with the outline of the orthographic projection of the photosensitive device 150 onto the plane of the light-transmitting substrate 110.

[0065] By setting the outline of the orthogonal projection of the light-transmitting portion 111 onto the plane of the light-transmitting substrate 110 to coincide with the outline of the orthogonal projection of the photosensitive device 150 onto the plane of the light-transmitting substrate 110, the light in the light-transmitting portion 111 can be blocked by the photosensitive device 150, preventing the light in the light-transmitting portion 111 from being emitted from the side of the light-transmitting portion 111 closest to the photosensitive device 150.

[0066] Please see Figure 3 and Figure 4 In some embodiments, the photosensitive device 150 is at least partially located within the array layer 130.

[0067] In this embodiment, since the photosensitive device 150 is at least partially located within the array layer 130, the light emitted by the light-emitting element 120 passes through the light-transmitting substrate 110 and is received by the photosensitive device 150 after hitting the array layer 130.

[0068] Please see Figure 3 and Figure 4 In some embodiments, the second terminal 152 is located in the array layer 130, and the remaining portion of the photosensitive device 150 is located between the light-transmitting substrate 110 and the array layer 130. Optionally, a portion of the second terminal 152 is located in the array layer 130, and another portion of the second terminal 152 is located on the side of the array layer 130 near the light-emitting device layer 140 and is electrically connected to the light-emitting device 141.

[0069] In this embodiment, the display panel 100 is configured such that the remaining portion of the photosensitive device 150 is located between the light-transmitting substrate 110 and the array layer 130, so that the light emitted by the light-emitting element 120 can be received by the photosensitive device 150 portion between the light-emitting substrate 110 and the array layer 130 after passing through the light-transmitting substrate 110 from the side of the light-emitting element 120 near the light-transmitting substrate 110 along the arrangement direction of the light-transmitting substrate 110 and the array layer 130.

[0070] Optionally, please refer to Figure 5 and Figure 6 A portion of the first terminal 151 is located in the array layer 130 and is electrically connected to the pixel driving circuit 131. The portion of the photosensitive device 150, excluding the first terminal 151 and the second terminal 152, is located between the light-transmitting substrate 110 and the array layer 130.

[0071] Please see Figure 1 and Figure 2 In some embodiments, the first terminal 151 is located in the array layer 130, and the remaining portion of the photosensitive device 150 is located on the side of the array layer 130 facing away from the light-transmitting substrate 110. Optionally, the second terminal 152 is partially located on the side of the array layer 130 closer to the light-emitting device layer 140.

[0072] In this embodiment, the display panel 100 is configured such that the remaining portion of the photosensitive device 150 is located on the side of the array layer 130 away from the light-transmitting substrate 110. This allows the light emitted by the light-emitting element 120 to pass through the light-transmitting substrate 110 and the array layer 130 sequentially from the side of the light-emitting element 120 close to the light-transmitting substrate 110, along the arrangement direction of the light-transmitting substrate 110 and the array layer 130, and then be received by the photosensitive device 150 on the side of the array layer 130 away from the light-transmitting substrate 110.

[0073] Optionally, the portion of the photosensitive device 150 other than the first terminal 151 and the second terminal 152 is located on the side of the array layer 130 facing away from the light-transmitting substrate 110.

[0074] Please see Figure 1 and Figure 2 In some embodiments, the orthographic projection of the light-emitting element 120 onto the plane of the light-transmitting substrate 110 overlaps with the orthographic projection of the photosensitive device 150 onto the plane of the light-transmitting substrate 110. Optionally, the light-emitting element 120 includes, but is not limited to, a light-emitting diode.

[0075] In this embodiment, the display panel 100 is configured such that the orthographic projection of the light-emitting element 120 onto the plane of the light-transmitting substrate 110 overlaps with the orthographic projection of the photosensitive device 150 onto the plane of the light-transmitting substrate 110. This allows the light-emitting element 120 and the photosensitive device 150 to be positioned directly opposite each other along the arrangement direction of the light-transmitting substrate 110 and the array layer 130. Thus, the light emitted by the light-emitting element 120, passing through the light-transmitting substrate 110 from the side of the light-emitting element 120 closest to the light-transmitting substrate 110 along the arrangement direction of the light-transmitting substrate 110 and the array layer 130, can be directed directly towards the photosensitive device 150 and fully received by it.

[0076] Optionally, the orthographic projection of the light-emitting element 120 onto the plane of the light-transmitting substrate 110 coincides with the orthographic projection of the photosensitive device 150 onto the plane of the light-transmitting substrate 110.

[0077] Optionally, the orthographic projection of the light-emitting element 120 onto the plane of the light-transmitting substrate 110 is located within the orthographic projection of the photosensitive device 150 onto the plane of the light-transmitting substrate 110.

[0078] Optionally, the orthographic projection of the photosensitive device 150 onto the plane of the light-transmitting substrate 110 is located within the orthographic projection of the light-emitting element 120 onto the plane of the light-transmitting substrate 110.

[0079] Please see Figure 1 and Figure 2 In some embodiments, the surface of the light-emitting element 120 facing away from the array layer 130 and the outer peripheral surface of the light-emitting element 120 are both covered with a first encapsulation layer 160. Optionally, the first encapsulation layer 160 is configured as a black encapsulation layer.

[0080] In this embodiment, the display panel 100 has a first encapsulation layer 160 covering the surface of the light-emitting element 120 facing away from the array layer 130 and the outer periphery of the light-emitting element 120. On the one hand, this can protect the light-emitting element 120 from moisture corrosion, reduce the failure rate of the light-emitting element 120, and extend the service life of the light-emitting element 120. On the other hand, it can prevent the light emitted by the light-emitting element 120 from shining out of the light-emitting element 120 from the outer periphery and the surface facing away from the array layer 130.

[0081] Optionally, the connection terminal 121 of the light-emitting element 120 is used to electrically connect to the driving circuit board (not shown). The connection terminal 121 is located on the side of the light-emitting element 120 away from the array layer 130 and on the side of the light-transmitting substrate 110 away from the array layer 130. The first encapsulation layer 160 is located on the side of the connection terminal 121 away from the array layer 130.

[0082] Please see Figure 1 and Figure 2 In some embodiments, the side surface of the photosensitive device 150 facing away from the light-transmitting substrate 110 and the outer peripheral surface of the photosensitive device 150 are both covered with a second encapsulation layer 170. Optionally, the second encapsulation layer 170 is configured as a black encapsulation layer.

[0083] In this embodiment, the display panel 100 protects the photosensitive device 150 by covering the surface of the photosensitive device 150 away from the light-transmitting substrate 110 and the outer peripheral surface of the photosensitive device 150 with a second encapsulation layer 170, thereby preventing moisture from corroding the photosensitive device 150, reducing the failure rate of the photosensitive device 150, and extending the service life of the photosensitive device 150.

[0084] Please see Figure 1 and Figure 2 In some embodiments, the display panel 100 includes a driving circuit board (not shown), which is located on the side of the light-transmitting substrate 110 away from the array layer 130. The driving circuit board is electrically connected to the light-emitting element 120 to drive the light-emitting element 120 to emit light.

[0085] In this embodiment, the display panel 100 drives the light-emitting element 120 to emit light through the driving circuit board. The light emitted by the light-emitting element 120 passes through the light-transmitting substrate 110 and can be received by the photosensitive device 150 in the direction from the light-transmitting substrate 110 to the array layer 130.

[0086] Please see Figure 7 and Figure 8 , Figure 7 For including Figure 1 , Figure 3 and Figure 5The present application provides a schematic diagram of the structure of a display device 10, which includes a display panel 100.

[0087] In this embodiment, the display device 10 uses a photosensitive device 150 to electrically connect the pixel driving circuit 131 and the light-emitting device 141. The light-emitting element 120 is disposed on the side of the light-transmitting substrate 110 away from the pixel driving circuit 131. The photosensitive device 150 and the light-emitting element 120 are photocoupled, so that the light emitted by the light-emitting element 120 passes through the light-transmitting substrate 110 and is received by the photosensitive device 150. The photosensitive device 150 converts the light emitted by the light-emitting element 120 into an electrical signal, which is used to turn on the pixel driving circuit 131 and the light-emitting device 141 or to turn off the pixel driving circuit 131 and the light-emitting device 141, thereby controlling the light emission of the light-emitting device 141. Specifically, when the photosensitive device 150 turns on the pixel driving circuit 131 and the light-emitting device 141, the light-emitting device 141 emits light under the drive of the pixel driving circuit 131. When the photosensitive device 150 turns off the pixel driving circuit 131 and the light-emitting device 141, the pixel driving circuit 131 no longer drives the light-emitting device 141, and the light-emitting device 141 stops emitting light.

[0088] It should be emphasized that since the photosensitive device 150 and the light-emitting element 120 are connected by photoelectric coupling rather than by electrical connection through control wires, the number of wires on the peripheral wall of the light-transmitting substrate 110 can be reduced. This avoids the large splicing gaps that would occur when the display panel 100 is spliced ​​with adjacent display panels 100 due to the presence of many wires on the peripheral wall of the light-transmitting substrate 110. As a result, the splicing gaps between two adjacent display panels 100 are reduced, improving the display effect of the splicing screen 1 formed by splicing multiple display panels 100.

[0089] In summary, the display device 10 in this embodiment forms a splicing screen 1 with better display effect.

[0090] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0091] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A display panel, characterized by, The display panel comprises: a light-transmitting substrate; a light-emitting element located on one side of the light-transmitting substrate; an array layer located on the side of the light-transmitting substrate away from the light-emitting element, the array layer comprising a pixel driving circuit; a light-emitting device layer located on the side of the array layer away from the light-transmitting substrate, the light-emitting device layer comprising a light-emitting device, the light-emitting device being electrically connected to the pixel driving circuit; a photosensitive device electrically connecting the pixel driving circuit and the light-emitting device, the photosensitive device being optoelectronically coupled to the light-emitting element, the photosensitive device being configured to convert light emitted by the light-emitting element into an electrical signal to turn on or off the pixel driving circuit and the light-emitting device.

2. The display panel of claim 1, wherein, A first terminal of the photosensitive device is electrically connected to the pixel driving circuit, and a second terminal of the photosensitive device is electrically connected to the light-emitting device, the first terminal being electrically connected to or disconnected from the second terminal when the photosensitive device receives light emitted by the light-emitting element.

3. The display panel of claim 2, wherein, The light-emitting element, the pixel driving circuit, and the photosensitive device each comprise a plurality of elements, the plurality of light-emitting elements being arranged correspondingly to the plurality of pixel driving circuits, and the plurality of photosensitive devices being arranged correspondingly to the plurality of light-emitting devices, the photosensitive device being electrically connected to the corresponding pixel driving circuit and the light-emitting device.

4. The display panel of claim 3, wherein, The light-transmitting substrate has a plurality of light-transmitting portions and a plurality of light-blocking portions, the plurality of light-transmitting portions and the plurality of light-blocking portions being arranged correspondingly, the light-blocking portion being arranged outside the corresponding light-transmitting portion; The plurality of light-emitting elements are arranged correspondingly to the plurality of light-transmitting portions, the light-emitting element being located on the side of the corresponding light-transmitting portion away from the array layer, and the photosensitive device being located on the side of the corresponding light-transmitting portion close to the array layer.

5. The display panel of claim 4, wherein, The light-transmitting substrate comprises a connecting portion, the connecting portion being located between and connecting two adjacent light-blocking portions, and the pixel driving circuit is located within the projection of the connecting portion on the plane of the light-transmitting substrate.

6. The display panel of claim 4, wherein, The light-emitting element is located within the projection of the light-transmitting portion on the plane of the light-transmitting substrate.

7. The display panel of claim 4, wherein, The photosensitive device is located within the projection of the light-transmitting portion on the plane of the light-transmitting substrate.

8. The display panel of any of claims 2-7, wherein, The photosensitive device is at least partially located in the array layer.

9. The display panel of claim 8, wherein, The second terminal is located in the array layer, and the rest of the photosensitive device is located between the light-transmitting substrate and the array layer.

10. The display panel of claim 8, wherein, The first terminal is located in the array layer, and the rest of the photosensitive device is located on the side of the array layer away from the light-transmitting substrate.

11. The display panel according to any one of claims 1-7, wherein, The light-emitting element is located within the projection of the photosensitive device on the plane of the light-transmitting substrate.

12. The display panel of any of claims 1-7, wherein, The side surface of the light-emitting element away from the array layer and the peripheral surface of the light-emitting element are both covered by a first encapsulating layer.

13. The display panel of any of claims 1-7, wherein, The side surface of the photosensitive device away from the light-transmitting substrate and the peripheral surface of the photosensitive device are both covered by a second encapsulating layer.

14. The display panel of any of claims 1-7, wherein, The display panel comprises a driving circuit board, the driving circuit board is located on the side of the light-transmitting substrate away from the array layer, and the driving circuit board is electrically connected with the light-emitting element to drive the light-emitting element to emit light.

15. A display device comprising: The display device comprises the display panel as claimed in any one of claims 1 to 14.

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