Display panel and display device

Abstract

The present disclosure relates to a display panel and a display device. The display panel has a first display area, a third display area, and a second display area located between the first display area and the third display area; the first display area includes a plurality of first light-emitting elements; the second display area includes a plurality of second light-emitting elements, a plurality of first pixel circuits, and a plurality of second pixel circuits, each of which is connected to the first light-emitting element through a conductive line, and each of which is connected to the second light-emitting element; the third display area includes a plurality of third light-emitting elements and a plurality of third pixel circuits, each of which is connected to at least one third light-emitting element; wherein the area of ​​the first display area, the area of ​​the second display area, and the area of ​​the third display area increase in sequence, and the area of ​​the first pixel circuit and the area of ​​the second pixel circuit are both smaller than the area of ​​the third pixel circuit. This solution can not only ensure that the under-screen light-sensitive sensor obtains sufficient light throughput, but also realize full-screen display.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] Cameras are usually installed on existing display devices to meet shooting needs. In order to maximize the screen-to-body ratio, technologies such as notch screen, water drop screen, and in-screen hole have emerged one after another. These technologies are to dig holes in part of the display area and place cameras under the hole area to reduce the area occupied by the camera in the surrounding area, thereby increasing the screen-to-body ratio. However, the above technologies require digging out part of the display area, which will cause part of the display area to be unable to be displayed, and the screen-to-body ratio cannot be further increased.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field. Summary of the invention

[0004] The purpose of the present disclosure is to provide a display panel and a display device, which can ensure that the under-screen photosensitive sensor obtains sufficient light throughput and realize full-screen display.

[0005] A first aspect of the present disclosure provides a display panel having a first display area, a third display area, and a second display area located between the first display area and the third display area; wherein:

[0006] The first display area includes a plurality of first light emitting elements;

[0007] The second display area includes a plurality of second light-emitting elements, a plurality of first pixel circuits and a plurality of second pixel circuits, each of the first pixel circuits is connected to at least one of the first light-emitting elements through a conductive line, and each of the second pixel circuits is connected to at least one of the second light-emitting elements;

[0008] The third display area includes a plurality of third light-emitting elements and a plurality of third pixel circuits, and each of the third pixel circuits is connected to at least one of the third light-emitting elements;

[0009] The areas of the first display area, the second display area and the third display area increase in sequence, and the areas of the first pixel circuit and the second pixel circuit are both smaller than the area of ​​the third pixel circuit.

[0010] In an exemplary embodiment of the present disclosure,

[0011] Each of the first pixel circuits is connected to one of the first light-emitting elements via a conductive line;

[0012] Each of the second pixel circuits is connected to one of the second light emitting elements;

[0013] Each of the third pixel circuits is connected to one of the third light-emitting elements.

[0014] In an exemplary embodiment of the present disclosure,

[0015] A ratio of an area of ​​the first pixel circuit to an area of ​​the third pixel circuit is 0.4 to 0.6;

[0016] A ratio of an area of ​​the second pixel circuit to an area of ​​the third pixel circuit is 0.4 to 0.6.

[0017] In an exemplary embodiment of the present disclosure, an area of ​​the first pixel circuit is equal to an area of ​​the second pixel circuit.

[0018] In an exemplary embodiment of the present disclosure, the second display area is arranged around the first display area.

[0019] In an exemplary embodiment of the present disclosure, the second display area includes a first annular area and a second annular area, the first annular area surrounds the first display area, and the second annular area is located at a position of the first annular area away from the first display area and surrounds the first display area;

[0020] The first annular area has the plurality of first pixel circuits, and the second annular area has the plurality of second pixel circuits.

[0021] In an exemplary embodiment of the present disclosure, the plurality of first pixel circuits are evenly distributed along a circumference of the first display area.

[0022] In an exemplary embodiment of the present disclosure, the first display area is rectangular, the second display area includes four side display areas connected end to end in sequence, each of the side display areas is located at one side of the first display area; and each of the side display areas includes a first partition and a second partition, a third partition and a fourth partition located at a side of the first partition away from the first display area, the second partition, the third partition and the fourth partition are arranged in sequence in an extension direction of the first partition, and the area of ​​the second partition is the same as the area of ​​the fourth partition;

[0023] The first partition and the third partition respectively have a plurality of evenly arranged first pixel circuits, and the second partition and the fourth partition respectively have a plurality of evenly arranged second pixel circuits.

[0024] In an exemplary embodiment of the present disclosure, the density of the first light-emitting elements in the first display area, the density of the second light-emitting elements in the second display area, and the density of the third light-emitting elements in the third display area are the same.

[0025] In an exemplary embodiment of the present disclosure, in a direction from the first display area to the third display area, the second display area is divided into at least two sub-display areas; wherein,

[0026] In a direction from the first display area to the third display area, the density of the second light emitting elements in the at least two sub-display areas increases sequentially;

[0027] And the density of the second light-emitting elements in the sub-display area close to the first display area among the at least two sub-display areas is greater than the density of the first light-emitting elements in the first display area; the density of the second light-emitting elements in the sub-display area close to the third display area among the at least two sub-display areas is less than the density of the third light-emitting elements in the third display area.

[0028] In an exemplary embodiment of the present disclosure, the conductive line is a transparent structure.

[0029] A second aspect of the present disclosure provides a display device, characterized in that it includes a display panel as described in any one of the above items and a photosensor located on the backlight side of the display panel, and the orthographic projection of the photosensor on the display panel is located in the first display area.

[0030] The technical solution provided by the present disclosure can achieve the following beneficial effects:

[0031] The display panel and display device provided by the present disclosure have a first display area that only has a first light-emitting element, and is not provided with a first pixel circuit connected to the first light-emitting element. Therefore, the first display area can have a higher light transmittance, and a photosensitive sensor such as a camera can be provided below the first display area to improve the imaging quality of the product; the second display area is provided near the first display area; the second display area has a second light-emitting element and a second pixel circuit connected to the second light-emitting element, and further has a first pixel circuit connected to the first light-emitting element of the first display area, that is, the second display area can provide space for the driving circuit of the first display area while ensuring its own normal display, so as to ensure the normal display of the first display sub-area; the third display area has a third light-emitting element and a third pixel circuit connected to the third light-emitting element, so as to ensure the normal display of the third display area. That is to say, the display panel and display device disclosed by the present disclosure can not only ensure that the photosensitive sensor under the screen obtains sufficient light throughput, but also realize full-screen display.

[0032] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 A schematic structural diagram of a display panel according to a first embodiment of the present disclosure is shown;

[0035] Figure 2 Shows Figure 1 An enlarged structural diagram of the D portion of the display panel shown in FIG.

[0036] Figure 3 An equivalent circuit diagram of a 7T1C pixel circuit provided by an embodiment of the present disclosure is shown;

[0037] Figure 4 The structure layout of the 7T1C pixel circuit provided by an embodiment of the present disclosure is shown;

[0038] Figure 5 A schematic structural diagram of a display panel according to a second embodiment of the present disclosure is shown;

[0039] Figure 6 A schematic structural diagram of a display panel according to a third embodiment of the present disclosure is shown;

[0040] Figure 7 A schematic structural diagram of a display panel according to a fourth embodiment of the present disclosure is shown;

[0041] Figure 8 A schematic structural diagram of a display panel according to a fifth embodiment of the present disclosure is shown;

[0042] Fig. 9 A schematic structural diagram of a display device according to an embodiment of the present disclosure is shown.

[0043] Reference numerals:

[0044] 1. Display panel; 10. First light-emitting element; 11. Second light-emitting element; 12. First pixel circuit; 13. Second pixel circuit; 14. Conductive line; 15. Third light-emitting element; 16. Third pixel circuit; 2. Photosensor. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the embodiments of the present disclosure will be described in detail in conjunction with the accompanying drawings below. Note that the embodiments can be implemented in multiple different forms. A person of ordinary skill in the art can easily understand the fact that the methods and contents can be transformed into various forms without departing from the purpose and scope of the present disclosure. Therefore, the present disclosure should not be interpreted as being limited to the contents described in the following embodiments. In the absence of conflict, the embodiments in the present disclosure and the features in the embodiments can be arbitrarily combined with each other.

[0046] The embodiment of the present disclosure provides a display panel, which can be an OLED (Organic Light-Emitting Diode) display or a Micro LED (Micro Light-Emitting Diode) display.

[0047] like Figure 1 As shown, the display panel 1 may have a plurality of display areas, namely: a first display area A1 , a third display area A3 , and a second display area A2 located between the first display area A1 and the third display area A3 .

[0048] For example, Figure 1 As shown, the second display area A2 can be set around the first display area A1, and the third display area A3 can be set around the second display area A2; it should be noted that the surrounding mentioned in the embodiment of the present disclosure means that one object completely surrounds another object, that is, the second display area A2 can completely surround the first display area A1, and the third display area A3 can completely surround the second display area A2.

[0049] In addition, it should be understood that the positions of the first display area A1, the second display area A2 and the third display area A3 are not limited to Figure 1 As shown in , the second display area A2 may only surround part of the first display area A1, and the third display area A3 may only surround part of the second display area A2, as long as the second display area A2 is located between the first display area A1 and the third display area A3, and the rest depends on the specific situation.

[0050] The structure of each display area in the display panel 1 of the embodiment of the present disclosure is described in detail below with reference to the accompanying drawings.

[0051] The first display area A1 may include a plurality of first light-emitting elements 10. The second display area A2 may include a plurality of second light-emitting elements 11, a plurality of first pixel circuits 12, and a plurality of second pixel circuits 13, each first pixel circuit 12 is connected to at least one first light-emitting element 10 via a conductive line 14, and each second pixel circuit 13 is connected to at least one second light-emitting element 11, and it should be noted that the second pixel circuit 13 and the second light-emitting element 11 at least partially overlap in the thickness direction of the display panel 1, or the second pixel circuit 13 and the second light-emitting element 11 do not overlap in the thickness direction of the display panel 1; the first pixel circuit 12 and the second light-emitting element 11 may at least partially overlap in the thickness direction of the display panel 1, or the first pixel circuit 12 and the second light-emitting element 11 do not overlap in the thickness direction of the display panel 1. The third display area A3 may include multiple third light-emitting elements 15 and multiple third pixel circuits 16, each third pixel circuit 16 is connected to at least one third light-emitting element 15. It should be noted that the third pixel circuit 16 and the third light-emitting element 15 at least partially overlap in the thickness direction of the display panel 1, or the third pixel circuit 16 and the third light-emitting element 15 do not overlap in the thickness direction of the display panel 1.

[0052] Optionally, multiple first pixel circuits 12 are connected one-to-one with multiple first light-emitting elements 10, multiple second pixel circuits 13 are connected one-to-one with multiple second light-emitting elements 11, and multiple third pixel circuits 16 are connected one-to-one with multiple third light-emitting elements 15, that is: each first pixel circuit 12 can be connected to a first light-emitting element 10 via a conductive line 14; each second pixel circuit 13 is connected to a second light-emitting element 11; and each third pixel circuit 16 is connected to a third light-emitting element 15.

[0053] It should be understood that the first pixel circuit 12, the second pixel circuit 13 and the third pixel circuit 16 generally include metal structures, such as metal structures such as transistors and capacitors, and therefore, their light transmittance is relatively poor; and the first light-emitting element 10, the second light-emitting element 11 and the third light-emitting element 15 generally include an anode, an organic light-emitting layer and a cathode arranged in sequence, and the anode and the cathode are generally made of materials with good light transmittance, for example, the materials of the anode and the cathode may include materials such as ITO (indium tin oxide) or IZO (indium zinc oxide), but are not limited to this, and may also be made of other materials with good light transmittance.

[0054] Based on the above disclosed content, it can be known that the first display area A1 of the embodiment of the present disclosure only has the first light-emitting element 10, and is not provided with the first pixel circuit 12 for driving the first light-emitting element 10. Therefore, the first display area A1 can have a higher light transmittance, and a photosensitive sensor such as a camera can be provided below the first display area A1 to improve the product imaging quality. The second display area A2 is arranged close to the first display area A1; the second display area A2 has a second light-emitting element 11 and a second pixel circuit 13 connected to the second light-emitting element 11. In addition, it also has a first pixel circuit 12 connected to the first light-emitting element 10 of the first display area A1. In other words, the second display area A2 can provide space for the driving circuit of the first display area A1 while ensuring its own normal display, so as to ensure the normal display of the first display area A1; the third display area A3 has a third light-emitting element 15 and a third pixel circuit 16 connected to the third light-emitting element 15 to ensure the normal display of the third display area A3.

[0055] In order to achieve the connection between the first light-emitting element 10 and the first pixel circuit 12, the conductive wire 14 is partially located in the first display area A1. In order to improve the light transmittance of the first display area A1, the conductive wire 14 can be set to a transparent structure, that is, the material of the conductive wire 14 can be ITO or IZO, but not limited thereto, and can also be other transparent conductive materials. It should be noted that the conductive wire 14 can be a single layer or a multi-layer, depending on the specific situation.

[0056] In the embodiment of the present disclosure, by dividing the display panel 1 into the three display areas mentioned above, it is possible to ensure that the light sensor under the screen obtains sufficient light passing through, and to achieve full-screen display. Among them, by placing the first pixel circuit 12 for driving the first light-emitting element 10 of the first display area A1 to emit light in the second display area A2 close to the first display area A1, compared with placing it in the third display area A3, the routing length of the conductive line 14 can be reduced, while reducing the cost, it can also reduce the design difficulty.

[0057] It should be understood that the first display area A1 of the embodiment of the present disclosure is mainly configured to be opposite to a photosensitive sensor such as a camera to ensure the imaging effect while being able to realize display; that is: the area of ​​the first display area A1 can be mainly determined by the size of a photosensitive sensor such as a camera. Since the size of a photosensitive sensor such as a camera is usually small, the area of ​​the first display area A1 of the embodiment of the present disclosure can be designed to be smaller; and the second display area A2 must be arranged with both a second pixel circuit 13 for driving the second light-emitting element 11 in this area to emit light and a first pixel circuit 12 for driving the first light-emitting element 10 in the first display area A1; therefore, in order to reduce the difficulty of designing the pixel circuit in the second display area A2, the area of ​​the second display area A2 can be designed to be larger. Specifically, the area of ​​the second display area A2 can be larger than the area of ​​the first display area A1, such as Figure 1 shown.

[0058] In addition, since the second display area A2 is arranged with two pixel circuits (i.e., the first pixel circuit 12 and the second pixel circuit 13), and the third display area A3 only needs to be arranged with one pixel circuit (i.e., the third pixel circuit 16); therefore, in order to ensure the overall display effect of the product, the area of ​​the third display area A3 can be designed to be larger than the area of ​​the second display area A2, such as Figure 1 That is to say, in the embodiment of the present disclosure, the third display area A3 accounts for the largest proportion, and the third display area A3 can be understood as the main display area of ​​the display panel 1. Specifically, the sum of the area of ​​the first display area A1 and the area of ​​the second display area A2 can be smaller than the area of ​​the third display area A3.

[0059] Among them, since the third display area A3 is the main display area of ​​the display panel 1, in order to ensure that the entire display panel 1 has a good display effect, it is necessary to ensure that the third display area A3 displays well. For this purpose, usually enough elements are arranged in the third pixel circuit 16 to better drive the third light-emitting element 15 to emit light and ensure the display effect. For example, this third pixel circuit 16 can be a 7T1C pixel circuit, that is, it includes 7 transistors and 1 capacitor.

[0060] In order to arrange the first pixel circuit 12 and the second pixel circuit 13 simultaneously within a limited area of ​​the second display area A2, in the embodiment of the present disclosure, the areas of the first pixel circuit 12 and the second pixel circuit 13 are designed to be smaller. Specifically, the area of ​​the first pixel circuit 12 and the area of ​​the second pixel circuit 13 are designed to be smaller than the area of ​​the third pixel circuit 16. Figure 2 shown.

[0061] For example, in order to make the area of ​​the first pixel circuit 12 and the area of ​​the second pixel circuit 13 designed to be smaller than the area of ​​the third pixel circuit 16, the number of each element in the first pixel circuit 12 and the second pixel circuit 13 can be reduced, for example: the first pixel circuit 12 and the second pixel circuit 13 of the present disclosure can be a 2T1C structure, that is, including 2 transistors and 1 capacitor; but not limited to this, the first pixel circuit 12 and the second pixel circuit 13 of the embodiment of the present disclosure can also be a 7T1C pixel circuit, but the area of ​​each element in the first pixel circuit 12 and the second pixel circuit 13 is smaller than the corresponding element in the third pixel circuit 16, for example: the area of ​​the transistor in the first pixel circuit 12 and the second pixel circuit 13 can be smaller than the area of ​​the transistor in the third pixel circuit 16, etc.

[0062] In the disclosed embodiment, the first pixel circuit 12 and the second pixel circuit 13 are preferably 7T1C pixel circuits, so as to better adjust the light-emitting effect of the first light-emitting element 10 and the second light-emitting element 11, thereby better ensuring the display balance of each display area and improving product quality.

[0063] Among them, combined Figure 3 and Figure 4 As shown in the 7T1C pixel circuit, the 7T1C pixel circuit includes a driving transistor T1, a data writing transistor T2, a threshold compensation transistor T3, a first light-emitting control transistor T4, a second light-emitting control transistor T5, a first reset transistor T6, a second reset transistor T7 and a storage capacitor C1. The pixel circuit can be connected to a gate signal terminal Gate, a data signal terminal Data, reset signal terminals RST1 and RST2, a light-emitting control signal terminal EM, a power supply terminal VDD, initial power supply terminals Vinit1 and Vinit2, and a light-emitting element, and the light-emitting element can also be connected to a power supply terminal VSS. The pixel circuit can be used to drive the connected light-emitting element to emit light in response to the signals provided by the connected signal terminals.

[0064] In addition, transistors can be divided into N-type and P-type transistors according to their characteristics. The embodiments of the present disclosure are described by taking the case where all transistors are P-type transistors. Based on the description and teaching of the implementation method disclosed in the present disclosure, ordinary technicians in this field can easily think of using N-type transistors for at least some of the transistors in the pixel circuit structure of the embodiment of the present disclosure, that is, using N-type transistors or a combination of N-type transistors and P-type transistors, without making any creative work. Therefore, these implementation methods are also within the protection scope of the embodiments of the present disclosure.

[0065] In one embodiment of the present disclosure, the ratio of the area of ​​the first pixel circuit 12 to the area of ​​the third pixel circuit 16 may be 0.4 to 0.6, such as: 0.4, 0.5, 0.6, etc.; and the ratio of the area of ​​the second pixel circuit 13 to the area of ​​the third pixel circuit 16 may be 0.4 to 0.6, such as: 0.4, 0.5, 0.6, etc.

[0066] The area of ​​the first pixel circuit 12 may be equal to the area of ​​the second pixel circuit 13 . In other words, the first pixel circuit 12 and the second pixel circuit 13 may adopt the same structure to reduce design difficulty and cost.

[0067] It should be noted that the area of ​​the first pixel circuit 12 and the area of ​​the second pixel circuit 13 may be larger than the area of ​​the second light emitting element 11, but is not limited thereto. Figure 2 The area shown is smaller than the area of ​​the second light emitting element 11; the specific area depends on the actual situation.

[0068] In one embodiment of the present disclosure, when the second display area A2 is arranged around the first display area A1, Figure 5 As shown, the second display area A2 may include a first annular area A21 and a second annular area A22, wherein the first annular area A21 may surround the first display area A1, and the second annular area A22 may be located at a position of the first annular area A21 away from the first display area A1 and surround the first display area A1; wherein the first annular area A21 has a plurality of first pixel circuits 12, and the second annular area A22 has a plurality of second pixel circuits 13; that is: each first pixel circuit 12 used to connect with each first light-emitting element 10 of the first display area A1 may be located in the first annular area A21 close to the first display area A1; and each second pixel circuit 13 used to connect with each second light-emitting element 11 may be located in the second annular area A22 away from the first display area A1.

[0069] In this embodiment, by disposing each first pixel circuit 12 in the first annular area A21 close to the first display area A1, the routing length of the conductive line 14 can be reduced, which can reduce the cost and facilitate routing design.

[0070] Alternatively, if Figure 5 As shown, the multiple first pixel circuits 12 located in the first annular area A21 can be evenly distributed along the circumference of the first display area A1. This can reduce the difficulty of designing the conductive wire 14 and also make the routing lengths of the conductive wires 14 connected to the first light-emitting elements 10 in the first display area A1 not much different, thereby ensuring that the luminous differences of the first light-emitting elements 10 are small, thereby improving the display effect of the first display area A1.

[0071] It should be understood that both the first annular area A21 and the second annular area A22 have the second light emitting element 11 .

[0072] In another embodiment of the present disclosure, the first display area A1 may be rectangular. Specifically, the second display area A2 may include four side display areas connected end to end, each of which is located on one side of the first display area A1. Figure 6 As shown, each side display area may include a first partition A23 and a second partition A24, a third partition A25 and a fourth partition A26 located on the side of the first partition A23 away from the first display area A1, the second partition A24, the third partition A25 and the fourth partition A26 are arranged in sequence in the extension direction of the first partition A23, and the area of ​​the second partition A24 is the same as the area of ​​the fourth partition A26; wherein the first partition A23 and the third partition A25 may respectively have a plurality of uniformly arranged first pixel circuits 12, and the second partition A24 and the fourth partition A26 may respectively have a plurality of uniformly arranged second pixel circuits 13; such a design can reduce the difficulty of designing the conductive wires 14 and ensure that the routing lengths of the conductive wires 14 are not much different, thereby ensuring the display effect of the first display area A1, while also reducing the difficulty of connecting the second pixel circuits 13 with the second light-emitting element 11, and ensuring that the connection lengths between the second pixel circuits 13 and the second light-emitting element 11 are not much different, thereby ensuring the display effect of the second display area A2.

[0073] It should be understood that the first subarea A23 , the second subarea A24 , the third subarea A25 and the fourth subarea A26 of each side display area all have the second light emitting element 11 .

[0074] It should be noted that the shape of the first display area A1 is not limited to a rectangle, but may also be a circle, an ellipse or other polygons, and the shape of the second display area A2 may be adapted to the shape of the first display area A1. For example, when the shape of the first display area A1 is a rectangle, the shape of the second display area A2 may be a rectangular ring, etc.; but not limited to this, the shape of the second display area A2 may also be other shapes, depending on the specific circumstances.

[0075] In an embodiment of the present disclosure, the first display area A1, the second display area A2 and the third display area A3 mentioned above all have light-emitting elements of multiple light-emitting colors. For example, the first display area A1, the second display area A2 and the third display area A3 may all include red light-emitting elements R, green light-emitting elements and blue light-emitting elements B, wherein the number of red light-emitting elements R in each display area is equal to the number of blue light-emitting elements B, and the number of green light-emitting elements G is twice the number of red light-emitting elements R; in other words, in each display area, a pixel may be composed of one red light-emitting element R, one blue light-emitting element B and two green light-emitting elements G, wherein the red light-emitting element R and the blue light-emitting element B are located in the same column, and the two green light-emitting elements G are located in the same column.

[0076] It should be understood that, in each display area, each pixel may also be composed of a red light-emitting element R, a blue light-emitting element B and a green light-emitting element G; or, the pixel may also include light-emitting elements of other colors, depending on the specific situation.

[0077] In one embodiment of the present disclosure, the density of the first light-emitting elements 10 in the first display area A1, the density of the second light-emitting elements 11 in the second display area A2, and the density of the third light-emitting elements 15 in the third display area A3 are the same; in other words, the pixel density in the first display area A1, the pixel density in the second display area A2, and the pixel density in the third display area A3 are the same. It should be noted that the pixel density refers to the same number of pixels per inch to ensure that the display effects of each display area are basically the same, thereby ensuring the uniformity of the display effect and improving the user experience.

[0078] It should be understood that when the pixel density in the first display area A1, the pixel density in the second display area A2 and the pixel density in the third display area A3 are the same; the area and shape of the first light-emitting element 10 with the same luminous color in the first display area A1, the second display area A2 and the third display area A3 are the same; Figure 7 As shown, the red light-emitting element R in the first display area A1, the red light-emitting element R in the second display area A2, and the red light-emitting element R in the third display area A3 are the same in area and shape, the blue light-emitting element B in the first display area A1, the blue light-emitting element B in the second display area A2, and the blue light-emitting element B in the third display area A3 are the same in area and shape, and the green light-emitting element G in the first display area A1, the green light-emitting element G in the second display area A2, and the green light-emitting element G in the third display area A3 are the same in area and shape.

[0079] In one embodiment of the present disclosure, the second display area A2 is divided into at least two sub-display areas in the direction from the first display area A1 to the third display area A3; wherein, in the direction from the first display area A1 to the third display area A3, the density of the second light-emitting elements 11 in each sub-display area increases successively, that is, the pixel density increases successively; and the density of the second light-emitting elements 11 in the sub-display area close to the first display area A1 in at least two sub-display areas is greater than the density of the first light-emitting elements 10 in the first display area A1, that is, the pixel density in the sub-display area close to the first display area A1 is greater than the pixel density in the first display area A1; the density of the second light-emitting elements 11 in the sub-display area close to the third display area A3 is less than the density of the third light-emitting elements 15 in the third display area A3, that is, the pixel density in the sub-display area close to the third display area A3 is less than the pixel density in the third display area A3.

[0080] For example, the second display area A2 may include two sub-display areas, namely a first annular area A21 close to the first display area A1 and a second annular area A22 close to the second display area A2, the pixel density of the first annular area A21 is greater than the pixel density of the first display area A1 and less than the pixel density in the second annular area A22, and the pixel density in the second annular area A22 is less than the pixel density in the third display area A3.

[0081] It should be understood that when the pixel density in the first display area A1, the first annular area A21, the second annular area A22 and the third display area A3 increases successively, the area of ​​the first light-emitting element 10 with the same light-emitting color in the first display area A1, the first annular area A21, the second annular area A22 and the third display area A3 decreases successively; Figure 8 As shown, the areas of the red light-emitting element R in the first display area A1, the red light-emitting element R in the first annular area A21, the red light-emitting element R in the second annular area A22, and the red light-emitting element R in the third display area A3 decrease successively, the areas of the blue light-emitting element B in the first display area A1, the blue light-emitting element B in the first annular area A21, the blue light-emitting element B in the second annular area A22, and the blue light-emitting element B in the third display area A3 decrease successively, and the areas of the green light-emitting element G in the first display area A1, the green light-emitting element G in the first annular area A21, the green light-emitting element G in the second annular area A22, and the green light-emitting element G in the third display area A3 decrease successively.

[0082] In this embodiment, by making the first display area A1 the area with the lowest pixel density in the entire display area, a higher light transmittance is provided for photosensors such as the under-screen camera; by making the third display area A3 the area with the highest pixel density in the entire display area, the display quality can be improved; and by making the pixel density in the second display area A2 increase successively from the first display area A1 to the third display area A3, a transitional connection can be achieved in terms of display quality, that is, the display quality gradually becomes better from the first display area A1 to the third display area A3, thereby avoiding poor display caused by sudden changes in display quality in different areas, and improving the display effect.

[0083] The present disclosure also provides a display device, such as Fig. 9 As shown, it includes the display panel 1 described in any of the above embodiments and a photosensor 2 located on the backlight side of the display panel 1, and the orthographic projection of the photosensor 2 on the display panel 1 is located in the first display area A1.

[0084] For example, the light sensor 2 can be a camera, and the camera is arranged on the backlight side of the display panel 1 and corresponds to the first display area A1; since the light transmittance of the first display area A1 corresponding to the camera is improved, a good shooting effect of the camera can be ensured. Therefore, the display device disclosed in the present invention has both good display effect and under-screen shooting effect.

[0085] It should be noted that in addition to the aforementioned structure, the display device also includes other necessary components and components, such as a cover plate, a touch function layer, a polarizer, a casing, a main circuit board, a power cord, etc. Those skilled in the art may make corresponding supplements according to the specific usage requirements of the display device, which will not be elaborated here.

[0086] In the embodiments of the present disclosure, the specific type of the display device is not particularly limited, and any type of display device commonly used in the art can be used, such as televisions, mobile phones, computers, watches, vehicle-mounted equipment, medical equipment, etc. Those skilled in the art can make corresponding choices based on the specific purpose of the display device, which will not be repeated here.

[0087] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of the illustration to another component, these terms are used in this specification only for convenience, such as according to the orientation of the examples described in the drawings. It is understood that if the device of the illustration is turned upside down, the component described as "upper" will become the component "lower". When a structure is "on" other structures, it may mean that the structure is formed integrally on the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.

[0088] In this specification, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate, or the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances.

[0089] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express an open-ended inclusive meaning and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.

[0090] In the present disclosure, the terms “first”, “second” are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0091] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing what is disclosed herein. The present disclosure is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

Claims

1. A display panel, characterized in that: It has a first display area, a third display area and a second display area located between the first display area and the third display area; wherein, The first display area includes a plurality of first light emitting elements; The second display area includes a plurality of second light-emitting elements, a plurality of first pixel circuits and a plurality of second pixel circuits, each of the first pixel circuits is connected to at least one of the first light-emitting elements through a conductive line, and each of the second pixel circuits is connected to at least one of the second light-emitting elements; The third display area includes a plurality of third light-emitting elements and a plurality of third pixel circuits, and each of the third pixel circuits is connected to at least one of the third light-emitting elements; The area of ​​the first display area, the area of ​​the second display area, and the area of ​​the third display area increase in sequence, and the area of ​​the first pixel circuit and the area of ​​the second pixel circuit are both smaller than the area of ​​the third pixel circuit; In the direction from the first display area to the third display area, the second display area is divided into at least two sub-display areas; wherein, In a direction from the first display area to the third display area, the density of the second light emitting elements in the at least two sub-display areas increases sequentially; And the density of the second light-emitting elements in the sub-display area close to the first display area among the at least two sub-display areas is greater than the density of the first light-emitting elements in the first display area; the density of the second light-emitting elements in the sub-display area close to the third display area among the at least two sub-display areas is less than the density of the third light-emitting elements in the third display area.

2. The display panel according to claim 1, characterized in that: Each of the first pixel circuits is connected to one of the first light-emitting elements via a conductive line; Each of the second pixel circuits is connected to one of the second light emitting elements; Each of the third pixel circuits is connected to one of the third light-emitting elements.

3. The display panel according to claim 2, characterized in that: A ratio of an area of ​​the first pixel circuit to an area of ​​the third pixel circuit is 0.4 to 0.6; A ratio of an area of ​​the second pixel circuit to an area of ​​the third pixel circuit is 0.4 to 0.

6.

4. The display panel according to claim 3, characterized in that: The area of ​​the first pixel circuit is equal to the area of ​​the second pixel circuit.

5. The display panel according to claim 1, characterized in that: The second display area is arranged around the first display area.

6. The display panel according to claim 5, characterized in that: The second display area includes a first annular area and a second annular area, the first annular area surrounds the first display area, and the second annular area is located at a position of the first annular area away from the first display area and surrounds the first display area; The first annular area has the plurality of first pixel circuits, and the second annular area has the plurality of second pixel circuits.

7. The display panel according to claim 6, characterized in that: The plurality of first pixel circuits are evenly distributed along a circumference of the first display area.

8. The display panel according to claim 5, characterized in that: The first display area is rectangular, the second display area includes four side display areas connected end to end in sequence, each of the side display areas is located on one side of the first display area; and each of the side display areas includes a first subarea and a second subarea, a third subarea and a fourth subarea located on a side of the first subarea away from the first display area, the second subarea, the third subarea and the fourth subarea are arranged in sequence in an extension direction of the first subarea, and the area of ​​the second subarea is the same as that of the fourth subarea; The first partition and the third partition respectively have a plurality of evenly arranged first pixel circuits, and the second partition and the fourth partition respectively have a plurality of evenly arranged second pixel circuits.

9. The display panel according to any one of claims 1 to 8, characterized in that: The density of the first light emitting elements in the first display area, the density of the second light emitting elements in the second display area, and the density of the third light emitting elements in the third display area are the same.

10. The display panel according to claim 1, characterized in that: The conductive wire is a transparent structure.

11. A display device, characterized in that: The device comprises a display panel as claimed in any one of claims 1 to 10 and a photosensor located on the backlight side of the display panel, wherein the orthographic projection of the photosensor on the display panel is located within the first display area.

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