Display panel and display device

Abstract

The invention relates to a display panel and a display device.The display panel is provided with a first display area and a second display area, the display panel comprises a substrate, a plurality of light emitting devices and a partition structure, the partition structure and the light emitting devices are all arranged on the substrate, and the partition structure is provided with a plurality of first openings and a plurality of second openings; each light-emitting device is located in one of the first openings; wherein the arrangement density of the first openings in the first display area is larger than that of the first openings in the second display area, and the second openings are located in the second display area. The display panel can improve the problem of poor display performance of the display panel.

Description

Technical Field

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

[0002] Organic Light Emitting Display (OLED) and flat-panel display devices based on technologies such as Light Emitting Diode (LED) have been widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc. due to their advantages such as high image quality, power saving, thin body and wide application range, becoming the mainstream in display devices.

[0003] However, the display performance of current OLED display products needs to be improved. Summary of the invention

[0004] Based on this, it is necessary to provide a display panel and a display device to address the problem of poor display performance of the display panel.

[0005] According to one aspect of the present application, a display panel is provided, having a first display area and a second display area, the display panel comprising: a base substrate; a partition structure, provided on the base substrate, and having a plurality of first openings and a plurality of second openings on the partition structure; and a plurality of light-emitting devices, provided on the base substrate, and each of the light-emitting devices is located in one of the first openings; wherein the arrangement density of the first openings in the first display area is greater than that in the second display area; and the second openings are located in the second display area.

[0006] In some embodiments, the second display area includes a first sub-display area and a second sub-display area, the first sub-display area is disposed adjacent to the first display area, and the second sub-display area is disposed adjacent to the first sub-display area; an orthographic projection area of ​​at least one second opening in the first sub-display area on the base substrate is smaller than an orthographic projection area of ​​the second opening in the second sub-display area on the base substrate;

[0007] Optionally, the number of the second openings in the first sub display area is the same as the number of the second openings in the second sub display area.

[0008] In some embodiments, the second display area includes a first sub-display area and a second sub-display area, the first sub-display area is disposed adjacent to the first display area, and the second sub-display area is disposed adjacent to the first sub-display area; the number of the second openings in the first sub-display area is less than the number of the second openings in the second sub-display area;

[0009] Optionally, an orthographic projection area of ​​one or more second openings in the first sub-display area on the base substrate is the same as an orthographic projection area of ​​the second opening in the second sub-display area on the base substrate.

[0010] In some embodiments, the second display area at least partially surrounds the first display area;

[0011] Optionally, the first display area and the second display area are both annular parts;

[0012] Optionally, the first display area is annular, and the second display area is annular and surrounds the first display area;

[0013] Optionally, the plurality of light-emitting devices include a plurality of device rows, and each of the device rows includes a plurality of light-emitting devices;

[0014] The plurality of light emitting devices in the same device row are arranged at intervals along a direction from the first display area to the second display area;

[0015] The plurality of device rows are arranged radially with the center of the first display area as the center.

[0016] In some embodiments, the display panel is divided into a main screen display area and a sub-screen display area; the orthographic projection of the main screen display area on the base substrate is circular or rectangular, and the orthographic projection of the sub-screen display area on the base substrate at least partially surrounds the orthographic projection of the main screen display area on the base substrate; the first display area and the second display area are located in the sub-screen display area;

[0017] Optionally, the secondary screen display area is arranged around the main screen display area in an enclosed state, and the secondary screen display area extends in an arc shape in a flattened state.

[0018] In some embodiments, the partition structure includes an isolator disposed on the base substrate, and a blocking portion disposed on a side of the isolator away from the base substrate, and an orthographic projection of the isolator on the base substrate is located within an orthographic projection of the blocking portion on the base substrate;

[0019] Optionally, at least some of the adjacent light emitting devices are separated by the spacer;

[0020] Optionally, the isolator is made of metal.

[0021] In some embodiments, the light emitting device includes a first electrode, a light emitting layer, and a second electrode sequentially stacked on the base substrate;

[0022] Optionally, the second electrodes of a plurality of the light-emitting devices are arranged at intervals, the partition structure comprises a conductive material, and the second electrodes of adjacent light-emitting devices are electrically connected to the conductive material of the partition structure.

[0023] In some embodiments, the display panel further includes a dummy device, wherein the dummy device is located in the second opening; wherein the dummy device is configured not to emit light.

[0024] In some embodiments, the virtual device includes a third electrode, a virtual light-emitting layer, and a fourth electrode stacked in sequence on the base substrate; wherein the third electrode and / or the fourth electrode is configured to be non-energized; or the virtual device includes a virtual light-emitting layer and a fifth electrode stacked in sequence on the base substrate.

[0025] According to another aspect of the present application, a display device is provided, which includes the display panel as described above.

[0026] The display panel provided in the present application includes a base substrate, a partition structure arranged on the base substrate, and a plurality of light-emitting devices, wherein a plurality of first openings are arranged on the partition structure, and the light-emitting devices are located in the first openings. In this way, during the manufacturing process of the display panel, the partition structure can replace the mask plate to separate adjacent light-emitting devices. Among them, a plurality of second openings are also provided on the partition structure, and the arrangement density of the first openings in the first display area is greater than that in the second display area, and the second openings are located in the second display area. In other words, based on the change in the arrangement density of the first openings, the reflection area of ​​the partition structure to ambient light in the second display area is greater than that in the first display area.

[0027] The present application reduces the orthographic projection area of ​​the portion of the partition structure located in the second display area on the substrate by setting a second opening in the second display area, thereby reducing the difference between the orthographic projection area of ​​the portion of the partition structure located in the second display area on the substrate and the orthographic projection area of ​​the portion of the partition structure located in the first display area on the substrate, thereby reducing the difference in the reflection area of ​​the partition structure to ambient light in the first display area and the second display area, thereby improving the display effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram showing the structure of a display panel according to an embodiment of the present application is shown;

[0029] Figure 2 shows an expanded plan view of a display panel in an embodiment of the present application;

[0030] Figure 3 Shows Figure 2 A partial enlarged view of the middle A;

[0031] Figure 4 A cross-sectional view showing an intermediate state of a manufacturing process of a display panel according to an embodiment of the present application is shown;

[0032] Figure 5a Shown along Figure 3 Cross-section along the BB direction;

[0033] Figure 5b shows a cross-sectional view of a display panel in another embodiment of the present application;

[0034] Figure 6 A schematic structural diagram of a display panel according to another embodiment of the present application is shown;

[0035] Figure 7 A top view of a display panel according to an embodiment of the present application is shown;

[0036] Figure 8 Shows Figure 7 A magnified view of a local detail of the display panel;

[0037] Fig. 9 A top view of a display panel according to another embodiment of the present application is shown;

[0038] Fig.10 Shows Fig. 9 A magnified view of a local detail of the display panel;

[0039] Fig.11 A three-dimensional diagram of a display panel according to an embodiment of the present application is shown;

[0040] Fig.12 and Fig.13 Showing schematic structural diagrams of display panels of two other embodiments;

[0041] Fig.14 A schematic structural diagram of a display device in an embodiment of the present application is shown.

[0042] Description of Figure Numbers:

[0043] 100. Display device;

[0044] 1. Display panel; A1, first display area; A2, second display area; A21, first sub-display area; A22, second sub-display area; AA1, main screen display area; AA2, sub-screen display area;

[0045] 10. Base substrate;

[0046] 11. light emitting device; 111. first electrode; 112. light emitting layer; 113. second electrode; 11a. device row;

[0047] 12, partition structure; 121, isolating body; 122, blocking portion; 12a, first opening; 12b, second opening; 12b1, near zone opening; 12b2, far zone opening;

[0048] 13. Virtual device; 1311. third electrode; 1312. virtual light emitting layer; 1313. fourth electrode; 1321. virtual light emitting layer; 1322. fifth electrode;

[0049] 14. Flexible circuit board. DETAILED DESCRIPTION

[0050] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0051] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0052] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0054] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0055] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, 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 implementation method.

[0056] In the traditional display panel manufacturing process, vacuum thermal evaporation is used to deposit small molecule organic matter through the openings of a metal mask onto a substrate to achieve patterned production of light-emitting devices. The evaporation coating process uses micro-openings of a metal mask or a high-precision metal mask (Fine Metal Mask, FMM) to define the coating area. The micro-openings are designed and arranged according to the pixel arrangement structure, and the size of each micro-opening is determined by the display resolution.

[0057] The accuracy and quality of the mask have a great impact on the performance of the display panel. The manufacturing accuracy of the currently used high-precision metal mask (Fine Metal Mask, FMM) has size limitations. It is generally used to make display panels with a resolution of 300ppi to 600ppi, and it is difficult to break through the resolution of more than 600ppi (pixel per inch). In addition, the size of the produced sub-pixels is tens of microns, and the aperture ratio is low. It is necessary to increase the current density to achieve the required high brightness, resulting in a low life of the display panel.

[0058] To improve the resolution and increase the aperture ratio, the accuracy of the mask plate needs to be improved. However, the higher the accuracy of the mask plate, the higher its cost. The higher the accuracy of the mask plate, the smaller its micro-openings. When used for evaporation, the cleaning cycle is shorter. It is difficult to clean, easy to damage, has a high elimination rate, and has extremely high production costs.

[0059] In addition, during the mask production process, the metal mesh strips prepared by layout need to be stretched and welded to the mask frame. During the welding process, the metal mesh strips need to be stretched to ensure a smooth surface. However, the stretching process of the metal mesh can easily cause deformation of the micro-openings, which will cause great changes in the patterning process of the light-emitting device and have a great impact on the quality and performance of the display.

[0060] Based on this, related technologies have developed a technology that uses a partition structure instead of a mask plate in the evaporation process of a light-emitting device. The strip or grid-shaped partition structure arranged on the substrate plays the role of a mask plate in the evaporation process to achieve the isolation of the light-emitting device.

[0061] However, while this partition structure solves the mask plate process problem, it also creates some new problems. Specifically, after the evaporation process is completed, the partition structure remains in the display panel, so that when the display panel is used, the partition structure will reflect ambient light, especially when the partition structure is made of metal, the reflection phenomenon will be more obvious.

[0062] Moreover, as the application scenarios of display technology gradually become richer, the application of the above-mentioned partition structure has gradually developed from mobile phones, TVs, computers, tablets and other products to some miniaturized display products, such as various special-shaped wearable products. Currently common wearable products include watches. The display area of ​​the watch is usually circular or rectangular, and multiple pixel units are arranged radially with the center of the display area as the center, which results in the pixel arrangement density near the middle area being greater than the pixel arrangement density in the peripheral area. The arrangement of the partition structure corresponds to the pixel arrangement, and the uneven pixel arrangement density means that the arrangement of the partition structure is also uneven. In this way, on the one hand, it will cause the problem of poor uniformity of etching of the partition structure, and on the other hand, it will cause different ambient light reflection conditions in different areas, so that the reflected ambient light will have a serious impact on the display effect.

[0063] To solve the above problems, the present application provides a display panel, which increases openings in areas corresponding to low pixel arrangement density on the partition structure, thereby reducing the difference in arrangement density of openings in different areas of the partition structure, thereby reducing the difference in reflection conditions in different areas of the partition structure, and thereby improving the display effect.

[0064] See also Figure 1 and Figure 2 , Figure 1 A schematic diagram showing the structure of a display panel according to an embodiment of the present application is shown. Figure 2 A unfolded plan view of a display panel in an embodiment of the present application is shown.

[0065] The display panel 1 provided in an embodiment of the present application comprises a first display area A1 and a second display area A2, wherein the first display area A1 and the second display area A2 are arranged adjacent to each other or spaced apart.

[0066] See also Figures 3 to 5a , Figure 3 Shows Figure 2 A partial enlarged view of the middle A. Figure 4 A cross-sectional view showing an intermediate state of a manufacturing process of a display panel according to an embodiment of the present application is shown. Figure 5a Shown along Figure 3 Cross-sectional view along the BB direction.

[0067] The display panel 1 includes a base substrate 10, a plurality of light-emitting devices 11, and a partition structure 12. The partition structure 12 and the plurality of light-emitting devices 11 are both arranged on the base substrate 10, and a plurality of first openings 12a are provided on the partition structure 12, and each light-emitting device 11 is located in one of the first openings 12a. For example, the number of first openings 12a is equal to the number of light-emitting devices 11, and the light-emitting devices 11 are arranged in the first openings 12a in a one-to-one correspondence. In this way, during the manufacturing process of the display panel 1, the partition structure 12 can replace the mask plate to separate adjacent light-emitting devices 11. For another example, a plurality of light-emitting devices 11 can also be provided in the first opening 12a, and specifically, a plurality of light-emitting devices 11 of the same color can be located in one first opening 12a.

[0068] The arrangement density of the first openings 12a in the first display area A1 is greater than that in the second display area A2, so that the orthographic projection area of ​​the portion of the partition structure 12 located in the first display area A1 on the base substrate 10 is smaller than that of the portion located in the second display area A2 on the base substrate 10, that is, the reflection area of ​​the partition structure 12 to ambient light in the second display area A2 is greater than that in the first display area A1. When the light-emitting devices 11 correspond to the first openings 12a one by one, the arrangement density of the light-emitting devices 11 in the first display area A1 is greater than that in the second display area A2.

[0069] Based on this, a plurality of second openings 12b located in the second display area A2 are provided on the partition structure 12. This is to reduce the orthographic projection area of ​​the portion of the partition structure 12 located in the second display area A2 on the base substrate 10, so that the orthographic projection area of ​​the portion of the partition structure 12 located in the second display area A2 on the base substrate 10 is equal to or close to the orthographic projection area of ​​the portion of the partition structure 12 located in the first display area A1 on the base substrate 10, so that the reflection area of ​​the partition structure 12 to the ambient light in the first display area A1 and the second display area A2 is equal to or close to each other, thereby making the overall reflectivity of the display panel 1 uniform and improving the display effect.

[0070] In some embodiments, the first display area A1 is adjacent to the second display area A2. For example, the first display area A1 and the second display area A2 are arranged side by side, or the second display area A2 surrounds the first display area A1. Further, in the second display area A2, the arrangement density of the light-emitting devices 11 decreases in sequence along the direction away from the center of the first display area A1. Specifically, the arrangement density of the light-emitting devices 11 decreases in a uniform manner and a non-uniform manner.

[0071] See also Figure 6 , Figure 6A schematic diagram of the structure of a display panel of another embodiment of the present application is shown. In some embodiments, the second display area A2 includes a first sub-display area A21 and a second sub-display area A22, the first sub-display area A21 is arranged adjacent to the first display area A1, and the second sub-display area A22 is arranged adjacent to the first sub-display area A21. Among them, the second sub-display area A22 can be adjacent to the first display area A1 while being adjacent to the first sub-display area A21, or it can be located on the side of the first sub-display area A21 away from the first display area A1. For example, the first display area A1, the first sub-display area A21, and the second sub-display area A22 are arranged side by side, or the first display area A1, the first sub-display area A21, and the second sub-display area A22 are arranged in a herringbone shape. For another example, the first sub-display area A21 is partially or completely surrounded by the first display area A1, and the second sub-display area A22 is partially or completely surrounded by the first sub-display area A21.

[0072] See also Figure 5a , Figure 7 and Figure 8 , Figure 7 FIG. 4 shows a top view of a display panel according to an embodiment of the present application. Figure 8 Shows Figure 7 A magnified view of a local detail of the display panel. In another optional embodiment, the number of the second openings 12b located in the first sub-display area A21 is less than the number of the second openings 12b located in the second sub-display area A22. Based on this, when the orthographic projection area of ​​the second openings 12b in the first sub-display area A21 on the base substrate 10 is less than or equal to the orthographic projection area of ​​the second openings 12b in the second sub-display area A22 on the base substrate 10, the degree of reduction of the orthographic projection area of ​​the partition structure 12 by the second openings 12b in the first sub-display area A21 is less than the degree of reduction of the orthographic projection area of ​​the partition structure 12 by the second openings 12b in the second sub-display area A22.

[0073] Further, the number of the second openings 12b in the first sub-display area A21 is smaller than the number of the second openings 12b in the second sub-display area A22, and the orthographic projection area of ​​one or more second openings 12b in the first sub-display area A21 is the same as the orthographic projection area of ​​the second openings 12b in the second sub-display area A22 on the base substrate 10. In this way, the degree of reduction of the orthographic projection area of ​​the partition structure 12 by the second openings 12b in the first sub-display area A21 is smaller than the degree of reduction of the orthographic projection area of ​​the partition structure 12 by the second openings 12b in the second sub-display area A22. Based on this, when the arrangement density of the first openings 12a in the first sub-display area A21 is greater than the arrangement density of the first openings 12a in the second sub-display area A22, so that the orthographic projection area of ​​the partition structure 12 in the first sub-display area A21 is smaller than the orthographic projection area of ​​the partition structure 12 in the second sub-display area A22, the second openings 12b in the second sub-display area A22 are used to reduce the orthographic projection area of ​​the partition structure 12 to a greater extent, thereby reducing the difference in the reflection area of ​​the partition structure 12 to ambient light in the first sub-display area A21 and the second sub-display area A22.

[0074] See also Figure 5a , Fig. 9 and Fig.10 , Fig. 9 FIG. 4 shows a top view of a display panel according to another embodiment of the present application. Fig.10 Shows Fig. 9 A magnified view of a local detail of the display panel. In an optional embodiment, the orthographic projection area of ​​at least one second opening 12b located in the first sub-display area A21 on the substrate 10 is smaller than the orthographic projection area of ​​the second opening 12b located in the second sub-display area A22 on the substrate 10. In other words, the orthographic projection area of ​​some second openings 12b located in the first sub-display area A21 on the substrate 10 is smaller than the orthographic projection area of ​​the second openings 12b located in the second sub-display area A22 on the substrate 10, or the orthographic projection area of ​​all second openings 12b located in the first sub-display area A21 on the substrate 10 is smaller than the orthographic projection area of ​​the second openings 12b located in the second sub-display area A22 on the substrate 10. Based on this, the degree of reduction of the orthographic projection area of ​​the partition structure 12 on the substrate 10 by the second openings 12b located in the first sub-display area A21 is smaller than the degree of reduction of the orthographic projection area of ​​the partition structure 12 on the substrate 10 by the second openings 12b located in the second sub-display area A22. In this way, the reflectivity of the first sub-display area A21 and the second sub-display area A22 can be adjusted by adjusting the size of the direct projection area of ​​the second opening 12b in the first sub-display area A21 and the second sub-display area A22 respectively, so that the reflectivity of different areas can be adjusted more accurately.

[0075] Furthermore, the orthographic projection area of ​​at least one second opening 12b located in the first sub-display area A21 on the base substrate 10 is smaller than the orthographic projection area of ​​the second opening 12b located in the second sub-display area A22 on the base substrate 10, and the number of second openings 12b in the first sub-display area A21 is the same as the number of second openings 12b in the second sub-display area A22. Based on this, by adjusting the orthographic projection area of ​​the second openings 12b in the first sub-display area A21 or adjusting the orthographic projection area of ​​the second openings 12b in the second sub-display area A22, the relative size of the orthographic projection area of ​​the partition structure 12 in the first sub-display area A21 and the second sub-display area A22 can be adjusted. In this way, the relative size of the reflectivity between different areas is simplified. See. Figure 7 and Figure 8 , wherein the arrangement density of the first openings 12a in the first sub-display area A21 is greater than the arrangement density thereof in the second sub-display area A22; the second openings 12b located in the first sub-display area A21 are near-area openings 12b1, and the second openings 12b located in the second sub-display area A22 are far-area openings 12b2. The sum of the orthogonal projection areas of the near-area openings 12b1 on the substrate 10 is less than the sum of the orthogonal projection areas of the far-area openings 12b2 on the substrate 10. For example, the number of the near-area openings 12b1 is less than the number of the far-area openings 12b2, and the orthogonal projection areas of the near-area openings 12b1 on the substrate 10 are the same as the orthogonal projection areas of the far-area openings 12b2 on the substrate 10. In this way, based on the change in the arrangement density of the first openings 12a, the difference between the orthogonal projection areas of the portion of the partition structure 12 located in the first sub-display area A21 on the substrate 10 and the orthogonal projection areas of the portion of the partition structure 12 located in the second sub-display area A22 on the substrate 10 can be reduced. In this embodiment, the projection area of ​​the second opening 12b is designed to divide the second opening 12b into a near opening 12b1 and a far opening 12b2. The projection areas of the partition structure 12 in the first sub-display area A21 and the second sub-display area A22 are adjusted by using the near opening 12b1 and the far opening 12b2 respectively. After considering the effects of the first opening 12a and the second opening 12b on the projection area, the projection areas of the partition structure 12 in the first sub-display area A21 and the second sub-display area A22 are equal or close, thereby making the reflectivity of different areas of the display panel 1 more uniform.

[0076] Optionally, the number of the second sub-display area A22 is one or more. Exemplarily, the number of the second sub-display area A22 is more than one. In this way, the second display area A2 can be partitioned more finely to adjust the reflectivity of different sub-areas in the second display area A2.

[0077] See also Figure 5a , Fig. 9and Fig.10 In an exemplary embodiment, the number of the near-zone openings 12b1 is equal to the number of the far-zone openings 12b2, and the orthographic projection area of ​​the near-zone openings 12b1 on the base substrate 10 is smaller than the orthographic projection area of ​​the far-zone openings 12b2 on the base substrate 10. In this way, the sum of the orthographic projection areas of the near-zone openings 12b1 on the base substrate 10 can be smaller than the sum of the orthographic projection areas of the far-zone openings 12b2 on the base substrate 10.

[0078] See also Figure 5a and Figure 8 In another exemplary embodiment, the number of the near-zone openings 12b1 is smaller than the number of the far-zone openings 12b2, and the orthographic projection areas of the near-zone openings 12b1 on the base substrate 10 are equal to the orthographic projection areas of the far-zone openings 12b2 on the base substrate 10. In this way, it is also possible to achieve that the sum of the orthographic projection areas of the near-zone openings 12b1 on the base substrate 10 is smaller than the sum of the orthographic projection areas of the far-zone openings 12b2 on the base substrate 10.

[0079] In some embodiments, the second display area A2 partially surrounds the first display area A1, or the second display area A2 surrounds the first display area A1. Figure 2 , the shapes of the first display area A1 and the second display area A2 are both parts of a ring; or, refer to Figure 7 or Fig. 9 The second display area A2 is ring-shaped and surrounds the first display area A1.

[0080] See also Figure 7 or Fig. 9 Optionally, the plurality of light-emitting devices 11 include a plurality of device rows 11a, each device row 11a includes a plurality of light-emitting devices 11, and the plurality of light-emitting devices 11 in the same device row 11a are arranged at intervals along the direction from the first display area A1 to the second display area A2, and the plurality of device rows 11a are arranged radially with the center of the first display area A1 as the center. Based on this, the plurality of light-emitting devices 11 are arranged in a relatively regular shape, but at the same time, a change in pixel arrangement density along the radial direction is also generated. On the basis of this pixel arrangement structure, the present application improves the uniformity of the overall reflectivity of the display panel 1 by designing the opening on the partition structure 12.

[0081] See also Figure 2 and Fig.11 , Fig.11A three-dimensional diagram of a display panel of an embodiment of the present application is shown. In some embodiments, the display panel 1 is divided into a main screen display area AA1 and a sub-screen display area AA2, the orthographic projection of the main screen display area AA1 on the base substrate is circular or rectangular, the orthographic projection of the sub-screen display area AA2 on the base substrate at least partially surrounds the orthographic projection of the main screen display area AA1 on the base substrate, and the first display area A1 and the second display area A2 are located in the sub-screen display area AA2. Optionally, the sub-screen display area AA2 is arranged around the main screen display area AA1 in an enclosed state, and the sub-screen display area AA2 extends in an arc shape in a flattened state.

[0082] See also Figures 11 to 13 , Fig.12 and Fig.13 The structure schematic diagram of the display panel of two other embodiments is shown. Optionally, the shape of the main screen display area AA1 can be a regular circle, rectangle or ellipse, or an irregular shape, and the auxiliary screen display area AA2 partially surrounds the main screen display area AA1 or completely surrounds the main screen display area AA1.

[0083] refer to Fig.11 , the secondary screen display area AA2 is set around the main screen display area AA1 in the enclosed state, refer to Figure 2 The auxiliary screen display area AA2 having the first display area A1 and the second display area A2 extends in an arc shape in a flat state.

[0084] It is understandable that when the shape of the main screen display area AA1 is a rectangle, the four top corners of the rectangle may be rounded to enhance the user experience.

[0085] See also Figure 7 and Fig.14 , Fig.14 The schematic diagram of the structure of the display device in one embodiment of the present application is shown. For example, the display panel 1 is used for a watch, the dial of the watch is circular or rectangular, and a plurality of light-emitting devices are arranged in an array in the middle area of ​​the dial, that is, corresponding to the main screen display area AA1 of the display panel 1. In this way, the time in the form of numbers, text, graphics or symbols indicating the current moment can be directly displayed in the middle area of ​​the dial through an image. For example, when it is twelve o'clock, the image "12:00" is displayed in the middle area of ​​the dial.

[0086] In the peripheral area of ​​the dial surrounding the main screen display area AA1, that is, the secondary screen display area AA2 corresponding to the display panel 1, multiple device rows 11a are arranged radially with the center of the main screen display area AA1 as the center. Multiple light-emitting devices 11 are arranged in each device row 11a, and the multiple light-emitting devices 11 in the same device row 11a are arranged at intervals in the direction away from the center of the main screen display area AA1. In this way, twelve numbers arranged in sequence from 1 to 12, or twenty-four numbers arranged in sequence from 1 to 24 can be displayed in the peripheral area of ​​the dial, and the twelve or twenty-four numbers are arranged in a ring. Based on this, by lighting up the pointer or other marking symbol corresponding to the number corresponding to the current moment, the current moment can also be displayed.

[0087] In addition, numbers, text, graphics, symbols, etc. representing information such as year, month, day, and place may be displayed through images in the middle area and surrounding areas of the dial, and other decorative graphics, symbols, etc. may also be displayed through images.

[0088] It can be understood that when the dial of the watch is rectangular, the four top corners of the rectangle can be rounded, which can improve the comfort of use.

[0089] See also Figure 4 , Figure 5a and Figure 5b In some embodiments, the partition structure 12 includes an isolator 121 disposed on the base substrate 10, and a blocking portion 122 disposed on a side of the isolator 121 away from the base substrate 10, and the orthographic projection of the isolator 121 on the base substrate 10 is located within the orthographic projection of the blocking portion 122 on the base substrate 10. In this way, in the evaporation process, the partition structure 12 can play a role similar to that of a mask plate.

[0090] Optionally, the partition structure 12 includes an isolator 121 disposed on the base substrate 10, and a blocking portion 122 disposed on a side of the isolator 121 away from the base substrate 10, and at least some adjacent light-emitting devices 11 are separated by the isolator 121. Based on this, in the process of forming the light-emitting device 11 by the evaporation process, the partition structure 12 can replace the traditional mask plate.

[0091] Optionally, the material of the isolator 121 is metal. It is understandable that when the material of the isolator 121 is metal, the isolator 121 is likely to produce a strong reflection of ambient light. Therefore, applying the design of the opening structure of the isolator 121 provided in the present application on the basis of the isolator 121 made of metal material can effectively improve the display effect.

[0092] In some embodiments, the light-emitting device 11 includes a first electrode 111, a light-emitting layer 112, and a second electrode 113 sequentially stacked on a base substrate 10. Optionally, one or both of the first electrode 111 and the second electrode 113 are metal electrodes. Exemplarily, the formation process of the light-emitting device 11 includes the following steps: first, evaporating the first electrode 111 on the base substrate 10 provided with the partition structure 12, then evaporating the light-emitting layer 112 on the side surface of the first electrode 111 away from the base substrate 10, and then evaporating the second electrode 113 on the side surface of the light-emitting layer 112 away from the first electrode 111. During the evaporation process, the partition structure 12 can play the role of a traditional mask.

[0093] It should be noted that since the second opening 12b is provided in the portion of the partition structure 12 located in the second display area A2, the uniformity of the coverage area of ​​the partition structure 12 in the first display area A1 and the second display area A2 is improved, thereby improving the uniformity of etching of the partition structure. In this way, in the process of using the partition structure 12 to replace the traditional mask plate for the evaporation process of the second electrode 113, the uniformity of the partition structure is improved, that is, the length uniformity of the insulator 121 and the blocking portion 122 of the partition structure is improved, so that the evaporation accuracy of the second electrode 113 is improved. Based on this, when the second electrode 113 is a cathode and the insulator 121 is a metal, the cathode can be more effectively overlapped with the insulator 121.

[0094] Exemplarily, the second electrodes 113 of the plurality of light-emitting devices 11 are spaced apart, the partition structure 12 includes a conductive material, and the second electrodes 113 of adjacent light-emitting devices 11 are electrically connected to the conductive material of the partition structure 12. In this way, the simple isolator 121 structure can replace the mask plate to realize the evaporation process of the light-emitting device 11, and can also realize the electrical connection between adjacent second electrodes 113.

[0095] See also Figure 1 , Figure 3 and Figure 5a Optionally, the display panel 1 further includes a dummy device 13, which is located in the second opening 12b of the partition structure 12, and the dummy device 13 is configured not to emit light. In other words, a plurality of light-emitting devices 11 are separated by the partition structure 12, and a second opening 12b is added to the partition structure 12 in an area where the light-emitting devices 11 are arranged at a lower density, so as to balance the reflection of ambient light by the partition structure in different areas. At this time, due to the presence of the second opening 12b, a dummy device 13 that does not need to emit light to display an image can be simultaneously formed in the formation process of the light-emitting device 11, such as the evaporation process. In this way, the reflection of ambient light in different areas is balanced, and the manufacturing process of the display panel 1 is simplified.

[0096] See also Figure 2 and Figure 3Exemplarily, the display panel 1 also includes a pixel circuit electrically connected to the light-emitting device 11, and the pixel circuit is electrically connected to the control chip through the flexible circuit board 14. During the wiring process, the connection between the virtual device 13 and the pixel circuit is disconnected, so that the virtual device 13 does not emit light.

[0097] Optionally, the structure of the dummy device 13 is the same as or different from the structure of the light emitting device 11. Figure 3 and Figure 5a In an exemplary embodiment, the structure of the dummy device 13 is the same as that of the light emitting device 11. Specifically, the dummy device 13 includes a third electrode 1311, a dummy light emitting layer 1312, and a fourth electrode 1313 which are sequentially stacked on the base substrate 10, wherein at least one of the third electrode 1311 and the fourth electrode 1313 is configured to be non-energized. In this way, the formation process of the dummy device 13 is consistent with the formation process of the light emitting device 11, and the dummy device 13 does not emit light, thereby achieving a balance of the ambient light reflectivity in different areas without destroying the pixel arrangement structure of the display panel 1, and simplifying the manufacturing process of the display panel 1.

[0098] See also Figure 3 and Figure 5b In another exemplary embodiment, the structure of the dummy device 13 is different from that of the light-emitting device 11. Specifically, the dummy device 13 includes a dummy light-emitting layer 1321 and a fifth electrode 1322 sequentially stacked on the base substrate 10. In other words, the dummy device 13 has one less electrode layer than the light-emitting device 11. For example, before forming the partition structure 12, the first electrode 111 of the light-emitting device 11 is first formed, but the third electrode is not formed in the area corresponding to the dummy device 13, and then the partition structure 12 is formed above the first electrode 111. In this way, in the subsequent evaporation process, the second electrode 113 of the light-emitting device 11 and the fifth electrode 1322 of the dummy device 13 can be formed simultaneously. Based on this, the dummy device 13 does not emit light, thereby ensuring that the pixel arrangement structure is not destroyed.

[0099] Based on the same invention purpose, the present application also provides a display device 100, see Fig.14 The display device 100 includes the display panel 1 in the above embodiment.

[0100] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0101] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A display panel, characterized in that: The display panel has a first display area and a second display area, and includes: substrate substrate; A partition structure is provided on the base substrate, and the partition structure is provided with a plurality of first openings and a plurality of second openings; and A plurality of light emitting devices are disposed on the base substrate, and each of the light emitting devices is located in one of the first openings; Wherein, the arrangement density of the first openings in the first display area is greater than the arrangement density in the second display area; The second opening is located in the second display area.

2. The display panel according to claim 1, characterized in that: The second display area includes a first sub-display area and a second sub-display area, the first sub-display area is arranged adjacent to the first display area, and the second sub-display area is arranged adjacent to the first sub-display area; An orthographic projection area of ​​at least one of the second openings in the first sub-display area on the base substrate is smaller than an orthographic projection area of ​​the second opening in the second sub-display area on the base substrate; Optionally, the number of the second openings in the first sub display area is the same as the number of the second openings in the second sub display area.

3. The display panel according to claim 1, characterized in that: The second display area includes a first sub-display area and a second sub-display area, the first sub-display area is arranged adjacent to the first display area, and the second sub-display area is arranged adjacent to the first sub-display area; The number of the second openings located in the first sub-display area is less than the number of the second openings located in the second sub-display area; Optionally, an orthographic projection area of ​​one or more second openings in the first sub-display area on the base substrate is the same as an orthographic projection area of ​​the second opening in the second sub-display area on the base substrate.

4. The display panel according to any one of claims 1 to 3, characterized in that: The second display area at least partially surrounds the first display area; Optionally, the first display area and the second display area are both annular parts; Optionally, the first display area is annular, and the second display area is annular and surrounds the first display area; Optionally, the plurality of light-emitting devices include a plurality of device rows, and each of the device rows includes a plurality of light-emitting devices; The plurality of light emitting devices in the same device row are arranged at intervals along a direction from the first display area to the second display area; The plurality of device rows are arranged radially with the center of the first display area as the center.

5. The display panel according to any one of claims 1 to 3, characterized in that: The display panel is divided into a main screen display area and a secondary screen display area; The orthographic projection of the main screen display area on the base substrate is circular or rectangular, and the orthographic projection of the auxiliary screen display area on the base substrate at least partially surrounds the orthographic projection of the main screen display area on the base substrate; The first display area and the second display area are located in the secondary screen display area; Optionally, the secondary screen display area is arranged around the main screen display area in an enclosed state, and the secondary screen display area extends in an arc shape in a flattened state.

6. The display panel according to any one of claims 1 to 3, characterized in that: The partition structure comprises an isolating body arranged on the base substrate, and a blocking portion arranged on a side of the isolating body away from the base substrate, wherein the orthographic projection of the isolating body on the base substrate is located within the orthographic projection of the blocking portion on the base substrate; Optionally, at least some of the adjacent light emitting devices are separated by the spacer; Optionally, the isolator is made of metal.

7. The display panel according to any one of claims 1 to 3, characterized in that: The light emitting device comprises a first electrode, a light emitting layer and a second electrode which are sequentially stacked on the base substrate; Optionally, the second electrodes of a plurality of the light-emitting devices are arranged at intervals, the partition structure comprises a conductive material, and the second electrodes of adjacent light-emitting devices are electrically connected to the conductive material of the partition structure.

8. The display panel according to any one of claims 1 to 3, characterized in that: The display panel further includes a dummy device, wherein the dummy device is located in the second opening; Wherein, the virtual device is configured not to emit light.

9. The display panel according to claim 8, characterized in that: The virtual device comprises a third electrode, a virtual light-emitting layer, and a fourth electrode which are sequentially stacked on the base substrate; Wherein, the third electrode and / or the fourth electrode are configured to be non-energized; or The dummy device includes a dummy light emitting layer and a fifth electrode which are sequentially stacked on the base substrate.

10. A display device, characterized in that: Comprising a display panel as described in any one of claims 1 to 9.

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